* [PATCHv7 01/15] dts: exynos4*: add HDMI CEC pin definition to pinctrl
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 02/15] dts: exynos4: add node for the HDMI CEC device Hans Verkuil
` (13 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
From: Kamil Debski <kamil@wypas.org>
Add pinctrl nodes for the HDMI CEC device to the Exynos4210 and
Exynos4x12 SoCs. These are required by the HDMI CEC device.
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
arch/arm/boot/dts/exynos4210-pinctrl.dtsi | 7 +++++++
arch/arm/boot/dts/exynos4x12-pinctrl.dtsi | 7 +++++++
2 files changed, 14 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4210-pinctrl.dtsi b/arch/arm/boot/dts/exynos4210-pinctrl.dtsi
index a7c2128..9331c62 100644
--- a/arch/arm/boot/dts/exynos4210-pinctrl.dtsi
+++ b/arch/arm/boot/dts/exynos4210-pinctrl.dtsi
@@ -820,6 +820,13 @@
samsung,pin-pud = <1>;
samsung,pin-drv = <0>;
};
+
+ hdmi_cec: hdmi-cec {
+ samsung,pins = "gpx3-6";
+ samsung,pin-function = <3>;
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <0>;
+ };
};
pinctrl@03860000 {
diff --git a/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi b/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi
index c141931..875464e 100644
--- a/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi
+++ b/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi
@@ -885,6 +885,13 @@
samsung,pin-pud = <0>;
samsung,pin-drv = <0>;
};
+
+ hdmi_cec: hdmi-cec {
+ samsung,pins = "gpx3-6";
+ samsung,pin-function = <3>;
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <0>;
+ };
};
pinctrl@03860000 {
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 02/15] dts: exynos4: add node for the HDMI CEC device
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 01/15] dts: exynos4*: add HDMI CEC pin definition to pinctrl Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 03/15] dts: exynos4412-odroid*: enable " Hans Verkuil
` (12 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
From: Kamil Debski <kamil@wypas.org>
This patch adds HDMI CEC node specific to the Exynos4210/4x12 SoC series.
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
arch/arm/boot/dts/exynos4.dtsi | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
index e20cdc2..8776db9 100644
--- a/arch/arm/boot/dts/exynos4.dtsi
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -704,6 +704,18 @@
status = "disabled";
};
+ hdmicec: cec@100B0000 {
+ compatible = "samsung,s5p-cec";
+ reg = <0x100B0000 0x200>;
+ interrupts = <0 114 0>;
+ clocks = <&clock CLK_HDMI_CEC>;
+ clock-names = "hdmicec";
+ samsung,syscon-phandle = <&pmu_system_controller>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&hdmi_cec>;
+ status = "disabled";
+ };
+
mixer: mixer@12C10000 {
compatible = "samsung,exynos4210-mixer";
interrupts = <0 91 0>;
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 03/15] dts: exynos4412-odroid*: enable the HDMI CEC device
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 01/15] dts: exynos4*: add HDMI CEC pin definition to pinctrl Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 02/15] dts: exynos4: add node for the HDMI CEC device Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 04/15] HID: add HDMI CEC specific keycodes Hans Verkuil
` (11 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
From: Kamil Debski <kamil@wypas.org>
Add a dts node entry and enable the HDMI CEC device present in the Exynos4
family of SoCs.
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index d6b49e5..a97362a 100644
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -472,6 +472,10 @@
status = "okay";
};
+ cec@100B0000 {
+ status = "okay";
+ };
+
hdmi_ddc: i2c@13880000 {
status = "okay";
pinctrl-names = "default";
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 04/15] HID: add HDMI CEC specific keycodes
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (2 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 03/15] dts: exynos4412-odroid*: enable " Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 19:25 ` Dmitry Torokhov
2015-06-29 10:14 ` [PATCHv7 05/15] input.h: add BUS_CEC type Hans Verkuil
` (10 subsequent siblings)
14 siblings, 1 reply; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
From: Kamil Debski <kamil@wypas.org>
Add HDMI CEC specific keycodes to the keycodes definition.
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
include/uapi/linux/input.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index 731417c..7430a3f 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -752,6 +752,18 @@ struct input_keymap_entry {
#define KEY_KBDINPUTASSIST_ACCEPT 0x264
#define KEY_KBDINPUTASSIST_CANCEL 0x265
+#define KEY_RIGHT_UP 0x266
+#define KEY_RIGHT_DOWN 0x267
+#define KEY_LEFT_UP 0x268
+#define KEY_LEFT_DOWN 0x269
+
+#define KEY_NEXT_FAVORITE 0x270
+#define KEY_STOP_RECORD 0x271
+#define KEY_PAUSE_RECORD 0x272
+#define KEY_VOD 0x273
+#define KEY_UNMUTE 0x274
+#define KEY_DVB 0x275
+
#define BTN_TRIGGER_HAPPY 0x2c0
#define BTN_TRIGGER_HAPPY1 0x2c0
#define BTN_TRIGGER_HAPPY2 0x2c1
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* Re: [PATCHv7 04/15] HID: add HDMI CEC specific keycodes
2015-06-29 10:14 ` [PATCHv7 04/15] HID: add HDMI CEC specific keycodes Hans Verkuil
@ 2015-06-29 19:25 ` Dmitry Torokhov
2015-06-30 7:36 ` Hans Verkuil
0 siblings, 1 reply; 26+ messages in thread
From: Dmitry Torokhov @ 2015-06-29 19:25 UTC (permalink / raw)
To: Hans Verkuil
Cc: linux-media, dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
linux-input, linux-samsung-soc, lars, kamil
On Mon, Jun 29, 2015 at 12:14:49PM +0200, Hans Verkuil wrote:
> From: Kamil Debski <kamil@wypas.org>
>
> Add HDMI CEC specific keycodes to the keycodes definition.
>
> Signed-off-by: Kamil Debski <kamil@wypas.org>
> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Could you please describe the intended use for these keycodes for people
who do not live and breathe CEC specs?
Thanks!
> ---
> include/uapi/linux/input.h | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
> index 731417c..7430a3f 100644
> --- a/include/uapi/linux/input.h
> +++ b/include/uapi/linux/input.h
> @@ -752,6 +752,18 @@ struct input_keymap_entry {
> #define KEY_KBDINPUTASSIST_ACCEPT 0x264
> #define KEY_KBDINPUTASSIST_CANCEL 0x265
>
> +#define KEY_RIGHT_UP 0x266
> +#define KEY_RIGHT_DOWN 0x267
> +#define KEY_LEFT_UP 0x268
> +#define KEY_LEFT_DOWN 0x269
> +
> +#define KEY_NEXT_FAVORITE 0x270
> +#define KEY_STOP_RECORD 0x271
> +#define KEY_PAUSE_RECORD 0x272
> +#define KEY_VOD 0x273
> +#define KEY_UNMUTE 0x274
> +#define KEY_DVB 0x275
> +
> #define BTN_TRIGGER_HAPPY 0x2c0
> #define BTN_TRIGGER_HAPPY1 0x2c0
> #define BTN_TRIGGER_HAPPY2 0x2c1
> --
> 2.1.4
>
--
Dmitry
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCHv7 04/15] HID: add HDMI CEC specific keycodes
2015-06-29 19:25 ` Dmitry Torokhov
@ 2015-06-30 7:36 ` Hans Verkuil
2015-06-30 16:43 ` Dmitry Torokhov
0 siblings, 1 reply; 26+ messages in thread
From: Hans Verkuil @ 2015-06-30 7:36 UTC (permalink / raw)
To: Dmitry Torokhov, Hans Verkuil
Cc: linux-media, dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
linux-input, linux-samsung-soc, lars, kamil
On 06/29/15 21:25, Dmitry Torokhov wrote:
> On Mon, Jun 29, 2015 at 12:14:49PM +0200, Hans Verkuil wrote:
>> From: Kamil Debski <kamil@wypas.org>
>>
>> Add HDMI CEC specific keycodes to the keycodes definition.
>>
>> Signed-off-by: Kamil Debski <kamil@wypas.org>
>> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
>
> Could you please describe the intended use for these keycodes for people
> who do not live and breathe CEC specs?
Do you want this as comments in the patch or as the commit description?
I realized that this patch needs to be updated anyway since there are a few
keys missing that were added for CEC 2.0.
Regards,
Hans
>
> Thanks!
>
>> ---
>> include/uapi/linux/input.h | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>>
>> diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
>> index 731417c..7430a3f 100644
>> --- a/include/uapi/linux/input.h
>> +++ b/include/uapi/linux/input.h
>> @@ -752,6 +752,18 @@ struct input_keymap_entry {
>> #define KEY_KBDINPUTASSIST_ACCEPT 0x264
>> #define KEY_KBDINPUTASSIST_CANCEL 0x265
>>
>> +#define KEY_RIGHT_UP 0x266
>> +#define KEY_RIGHT_DOWN 0x267
>> +#define KEY_LEFT_UP 0x268
>> +#define KEY_LEFT_DOWN 0x269
>> +
>> +#define KEY_NEXT_FAVORITE 0x270
>> +#define KEY_STOP_RECORD 0x271
>> +#define KEY_PAUSE_RECORD 0x272
>> +#define KEY_VOD 0x273
>> +#define KEY_UNMUTE 0x274
>> +#define KEY_DVB 0x275
>> +
>> #define BTN_TRIGGER_HAPPY 0x2c0
>> #define BTN_TRIGGER_HAPPY1 0x2c0
>> #define BTN_TRIGGER_HAPPY2 0x2c1
>> --
>> 2.1.4
>>
>
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCHv7 04/15] HID: add HDMI CEC specific keycodes
2015-06-30 7:36 ` Hans Verkuil
@ 2015-06-30 16:43 ` Dmitry Torokhov
0 siblings, 0 replies; 26+ messages in thread
From: Dmitry Torokhov @ 2015-06-30 16:43 UTC (permalink / raw)
To: Hans Verkuil
Cc: Hans Verkuil, linux-media, dri-devel, m.szyprowski, kyungmin.park,
thomas, sean, linux-input, linux-samsung-soc, lars, kamil
On Tue, Jun 30, 2015 at 09:36:49AM +0200, Hans Verkuil wrote:
> On 06/29/15 21:25, Dmitry Torokhov wrote:
> > On Mon, Jun 29, 2015 at 12:14:49PM +0200, Hans Verkuil wrote:
> >> From: Kamil Debski <kamil@wypas.org>
> >>
> >> Add HDMI CEC specific keycodes to the keycodes definition.
> >>
> >> Signed-off-by: Kamil Debski <kamil@wypas.org>
> >> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
> >
> > Could you please describe the intended use for these keycodes for people
> > who do not live and breathe CEC specs?
>
> Do you want this as comments in the patch or as the commit description?
In the patch would be preferable.
Thanks.
--
Dmitry
^ permalink raw reply [flat|nested] 26+ messages in thread
* [PATCHv7 05/15] input.h: add BUS_CEC type
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (3 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 04/15] HID: add HDMI CEC specific keycodes Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 19:24 ` Dmitry Torokhov
2015-06-29 10:14 ` Hans Verkuil
` (9 subsequent siblings)
14 siblings, 1 reply; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
Inputs can come in over the HDMI CEC bus, so add a new type for this.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
include/uapi/linux/input.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index 7430a3f..0af80b2 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -984,6 +984,7 @@ struct input_keymap_entry {
#define BUS_GSC 0x1A
#define BUS_ATARI 0x1B
#define BUS_SPI 0x1C
+#define BUS_CEC 0x1D
/*
* MT_TOOL types
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* Re: [PATCHv7 05/15] input.h: add BUS_CEC type
2015-06-29 10:14 ` [PATCHv7 05/15] input.h: add BUS_CEC type Hans Verkuil
@ 2015-06-29 19:24 ` Dmitry Torokhov
0 siblings, 0 replies; 26+ messages in thread
From: Dmitry Torokhov @ 2015-06-29 19:24 UTC (permalink / raw)
To: Hans Verkuil
Cc: linux-media, dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
linux-input, linux-samsung-soc, lars, kamil
On Mon, Jun 29, 2015 at 12:14:50PM +0200, Hans Verkuil wrote:
> Inputs can come in over the HDMI CEC bus, so add a new type for this.
>
> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
> include/uapi/linux/input.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
> index 7430a3f..0af80b2 100644
> --- a/include/uapi/linux/input.h
> +++ b/include/uapi/linux/input.h
> @@ -984,6 +984,7 @@ struct input_keymap_entry {
> #define BUS_GSC 0x1A
> #define BUS_ATARI 0x1B
> #define BUS_SPI 0x1C
> +#define BUS_CEC 0x1D
>
> /*
> * MT_TOOL types
> --
> 2.1.4
>
--
Dmitry
^ permalink raw reply [flat|nested] 26+ messages in thread
* [PATCHv7 06/15] rc: Add HDMI CEC protocol handling
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 02/15] dts: exynos4: add node for the HDMI CEC device Hans Verkuil
` (13 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
From: Kamil Debski <kamil@wypas.org>
Add handling of remote control events coming from the HDMI CEC bus.
This patch includes a new keymap that maps values found in the CEC
messages to the keys pressed and released. Also, a new protocol has
been added to the core.
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
drivers/media/rc/keymaps/Makefile | 1 +
drivers/media/rc/keymaps/rc-cec.c | 144 ++++++++++++++++++++++++++++++++++++++
drivers/media/rc/rc-main.c | 1 +
include/media/rc-core.h | 1 +
include/media/rc-map.h | 5 +-
5 files changed, 151 insertions(+), 1 deletion(-)
create mode 100644 drivers/media/rc/keymaps/rc-cec.c
diff --git a/drivers/media/rc/keymaps/Makefile b/drivers/media/rc/keymaps/Makefile
index fbbd3bb..9cffcc6 100644
--- a/drivers/media/rc/keymaps/Makefile
+++ b/drivers/media/rc/keymaps/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_RC_MAP) += rc-adstech-dvb-t-pci.o \
rc-behold.o \
rc-behold-columbus.o \
rc-budget-ci-old.o \
+ rc-cec.o \
rc-cinergy-1400.o \
rc-cinergy.o \
rc-delock-61959.o \
diff --git a/drivers/media/rc/keymaps/rc-cec.c b/drivers/media/rc/keymaps/rc-cec.c
new file mode 100644
index 0000000..cc5b318
--- /dev/null
+++ b/drivers/media/rc/keymaps/rc-cec.c
@@ -0,0 +1,144 @@
+/* Keytable for the CEC remote control
+ *
+ * Copyright (c) 2015 by Kamil Debski
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <media/rc-map.h>
+#include <linux/module.h>
+
+/* CEC Spec "High-Definition Multimedia Interface Specification" can be obtained
+ * here: http://xtreamerdev.googlecode.com/files/CEC_Specs.pdf
+ * The list of control codes is listed in Table 27: User Control Codes p. 95 */
+
+static struct rc_map_table cec[] = {
+ { 0x00, KEY_OK },
+ { 0x01, KEY_UP },
+ { 0x02, KEY_DOWN },
+ { 0x03, KEY_LEFT },
+ { 0x04, KEY_RIGHT },
+ { 0x05, KEY_RIGHT_UP },
+ { 0x06, KEY_RIGHT_DOWN },
+ { 0x07, KEY_LEFT_UP },
+ { 0x08, KEY_LEFT_DOWN },
+ { 0x09, KEY_CONTEXT_MENU }, /* CEC Spec: Root Menu - see Note 2 */
+ /* Note 2: This is the initial display that a device shows. It is
+ * device-dependent and can be, for example, a contents menu, setup
+ * menu, favorite menu or other menu. The actual menu displayed
+ * may also depend on the device’s current state. */
+ { 0x0a, KEY_SETUP },
+ { 0x0b, KEY_MENU }, /* CEC Spec: Contents Menu */
+ { 0x0c, KEY_FAVORITES }, /* CEC Spec: Favorite Menu */
+ { 0x0d, KEY_EXIT },
+ /* 0x0e-0x1f: Reserved */
+ /* 0x20-0x29: Keys 0 to 9 */
+ { 0x20, KEY_NUMERIC_0 },
+ { 0x21, KEY_NUMERIC_1 },
+ { 0x22, KEY_NUMERIC_2 },
+ { 0x23, KEY_NUMERIC_3 },
+ { 0x24, KEY_NUMERIC_4 },
+ { 0x25, KEY_NUMERIC_5 },
+ { 0x26, KEY_NUMERIC_6 },
+ { 0x27, KEY_NUMERIC_7 },
+ { 0x28, KEY_NUMERIC_8 },
+ { 0x29, KEY_NUMERIC_9 },
+ { 0x2a, KEY_DOT },
+ { 0x2b, KEY_ENTER },
+ { 0x2c, KEY_CLEAR },
+ /* 0x2d-0x2e: Reserved */
+ { 0x2f, KEY_NEXT_FAVORITE }, /* CEC Spec: Next Favorite */
+ { 0x30, KEY_CHANNELUP },
+ { 0x31, KEY_CHANNELDOWN },
+ { 0x32, KEY_PREVIOUS }, /* CEC Spec: Previous Channel */
+ { 0x33, KEY_SOUND }, /* CEC Spec: Sound Select */
+ { 0x34, KEY_VIDEO }, /* 0x34: CEC Spec: Input Select */
+ { 0x35, KEY_INFO }, /* CEC Spec: Display Information */
+ { 0x36, KEY_HELP },
+ { 0x37, KEY_PAGEUP },
+ { 0x38, KEY_PAGEDOWN },
+ /* 0x39-0x3f: Reserved */
+ { 0x40, KEY_POWER },
+ { 0x41, KEY_VOLUMEUP },
+ { 0x42, KEY_VOLUMEDOWN },
+ { 0x43, KEY_MUTE },
+ { 0x44, KEY_PLAY },
+ { 0x45, KEY_STOP },
+ { 0x46, KEY_PAUSE },
+ { 0x47, KEY_RECORD },
+ { 0x48, KEY_REWIND },
+ { 0x49, KEY_FASTFORWARD },
+ { 0x4a, KEY_EJECTCD }, /* CEC Spec: Eject */
+ { 0x4b, KEY_FORWARD },
+ { 0x4c, KEY_BACK },
+ { 0x4d, KEY_STOP_RECORD }, /* CEC Spec: Stop-Record */
+ { 0x4e, KEY_PAUSE_RECORD }, /* CEC Spec: Pause-Record */
+ /* 0x4f: Reserved */
+ { 0x50, KEY_ANGLE },
+ { 0x51, KEY_TV2 },
+ { 0x52, KEY_VOD }, /* CEC Spec: Video on Demand */
+ { 0x53, KEY_EPG },
+ { 0x54, KEY_TIME }, /* CEC Spec: Timer */
+ { 0x55, KEY_CONFIG },
+ /* 0x56-0x5f: Reserved */
+ { 0x60, KEY_PLAY }, /* CEC Spec: Play Function */
+ { 0x6024, KEY_PLAY },
+ { 0x6020, KEY_PAUSE },
+ { 0x61, KEY_PLAYPAUSE }, /* CEC Spec: Pause-Play Function */
+ { 0x62, KEY_RECORD }, /* Spec: Record Function */
+ { 0x63, KEY_PAUSE }, /* CEC Spec: Pause-Record Function */
+ { 0x64, KEY_STOP }, /* CEC Spec: Stop Function */
+ { 0x65, KEY_MUTE }, /* CEC Spec: Mute Function */
+ { 0x66, KEY_UNMUTE }, /* CEC Spec: Restore the volume */
+ /* The following codes are hard to implement at this moment, as they
+ * carry an additional additional argument. Most likely changes to RC
+ * framework are necessary.
+ * For now they are interpreted by the CEC framework as non keycodes
+ * and are passed as messages enabling user application to parse them.
+ * */
+ /* 0x67: CEC Spec: Tune Function */
+ /* 0x68: CEC Spec: Seleect Media Function */
+ /* 0x69: CEC Spec: Select A/V Input Function */
+ /* 0x6a: CEC Spec: Select Audio Input Function */
+ { 0x6b, KEY_POWER }, /* CEC Spec: Power Toggle Function */
+ { 0x6c, KEY_SLEEP }, /* CEC Spec: Power Off Function */
+ { 0x6d, KEY_WAKEUP }, /* CEC Spec: Power On Function */
+ /* 0x6e-0x70: Reserved */
+ { 0x71, KEY_BLUE }, /* CEC Spec: F1 (Blue) */
+ { 0x72, KEY_RED }, /* CEC Spec: F2 (Red) */
+ { 0x73, KEY_GREEN }, /* CEC Spec: F3 (Green) */
+ { 0x74, KEY_YELLOW }, /* CEC Spec: F4 (Yellow) */
+ { 0x75, KEY_F5 },
+ { 0x76, KEY_DVB }, /* CEC Spec: Data - see Note 3 */
+ /* Note 3: This is used, for example, to enter or leave a digital TV
+ * data broadcast application. */
+ /* 0x77-0xff: Reserved */
+};
+
+static struct rc_map_list cec_map = {
+ .map = {
+ .scan = cec,
+ .size = ARRAY_SIZE(cec),
+ .rc_type = RC_TYPE_CEC,
+ .name = RC_MAP_CEC,
+ }
+};
+
+static int __init init_rc_map_cec(void)
+{
+ return rc_map_register(&cec_map);
+}
+
+static void __exit exit_rc_map_cec(void)
+{
+ rc_map_unregister(&cec_map);
+}
+
+module_init(init_rc_map_cec);
+module_exit(exit_rc_map_cec);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kamil Debski");
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 9d015db..905cd90 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -801,6 +801,7 @@ static struct {
{ RC_BIT_MCE_KBD, "mce_kbd" },
{ RC_BIT_LIRC, "lirc" },
{ RC_BIT_XMP, "xmp" },
+ { RC_BIT_CEC, "cec" },
};
/**
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index 45534da..f2e5d35 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -32,6 +32,7 @@ do { \
enum rc_driver_type {
RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */
RC_DRIVER_IR_RAW, /* Needs a Infra-Red pulse/space decoder */
+ RC_DRIVER_CEC,
};
/**
diff --git a/include/media/rc-map.h b/include/media/rc-map.h
index 27763d5..acdca09 100644
--- a/include/media/rc-map.h
+++ b/include/media/rc-map.h
@@ -32,6 +32,7 @@ enum rc_type {
RC_TYPE_RC6_MCE = 17, /* MCE (Philips RC6-6A-32 subtype) protocol */
RC_TYPE_SHARP = 18, /* Sharp protocol */
RC_TYPE_XMP = 19, /* XMP protocol */
+ RC_TYPE_CEC = 20, /* CEC protocol */
};
#define RC_BIT_NONE 0
@@ -55,6 +56,7 @@ enum rc_type {
#define RC_BIT_RC6_MCE (1 << RC_TYPE_RC6_MCE)
#define RC_BIT_SHARP (1 << RC_TYPE_SHARP)
#define RC_BIT_XMP (1 << RC_TYPE_XMP)
+#define RC_BIT_CEC (1 << RC_TYPE_CEC)
#define RC_BIT_ALL (RC_BIT_UNKNOWN | RC_BIT_OTHER | RC_BIT_LIRC | \
RC_BIT_RC5 | RC_BIT_RC5X | RC_BIT_RC5_SZ | \
@@ -63,7 +65,7 @@ enum rc_type {
RC_BIT_NEC | RC_BIT_SANYO | RC_BIT_MCE_KBD | \
RC_BIT_RC6_0 | RC_BIT_RC6_6A_20 | RC_BIT_RC6_6A_24 | \
RC_BIT_RC6_6A_32 | RC_BIT_RC6_MCE | RC_BIT_SHARP | \
- RC_BIT_XMP)
+ RC_BIT_XMP | RC_BIT_CEC)
#define RC_SCANCODE_UNKNOWN(x) (x)
@@ -125,6 +127,7 @@ void rc_map_init(void);
#define RC_MAP_BEHOLD_COLUMBUS "rc-behold-columbus"
#define RC_MAP_BEHOLD "rc-behold"
#define RC_MAP_BUDGET_CI_OLD "rc-budget-ci-old"
+#define RC_MAP_CEC "rc-cec"
#define RC_MAP_CINERGY_1400 "rc-cinergy-1400"
#define RC_MAP_CINERGY "rc-cinergy"
#define RC_MAP_DELOCK_61959 "rc-delock-61959"
--
2.1.4
--
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^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 06/15] rc: Add HDMI CEC protocol handling
@ 2015-06-29 10:14 ` Hans Verkuil
0 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
From: Kamil Debski <kamil@wypas.org>
Add handling of remote control events coming from the HDMI CEC bus.
This patch includes a new keymap that maps values found in the CEC
messages to the keys pressed and released. Also, a new protocol has
been added to the core.
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
drivers/media/rc/keymaps/Makefile | 1 +
drivers/media/rc/keymaps/rc-cec.c | 144 ++++++++++++++++++++++++++++++++++++++
drivers/media/rc/rc-main.c | 1 +
include/media/rc-core.h | 1 +
include/media/rc-map.h | 5 +-
5 files changed, 151 insertions(+), 1 deletion(-)
create mode 100644 drivers/media/rc/keymaps/rc-cec.c
diff --git a/drivers/media/rc/keymaps/Makefile b/drivers/media/rc/keymaps/Makefile
index fbbd3bb..9cffcc6 100644
--- a/drivers/media/rc/keymaps/Makefile
+++ b/drivers/media/rc/keymaps/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_RC_MAP) += rc-adstech-dvb-t-pci.o \
rc-behold.o \
rc-behold-columbus.o \
rc-budget-ci-old.o \
+ rc-cec.o \
rc-cinergy-1400.o \
rc-cinergy.o \
rc-delock-61959.o \
diff --git a/drivers/media/rc/keymaps/rc-cec.c b/drivers/media/rc/keymaps/rc-cec.c
new file mode 100644
index 0000000..cc5b318
--- /dev/null
+++ b/drivers/media/rc/keymaps/rc-cec.c
@@ -0,0 +1,144 @@
+/* Keytable for the CEC remote control
+ *
+ * Copyright (c) 2015 by Kamil Debski
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <media/rc-map.h>
+#include <linux/module.h>
+
+/* CEC Spec "High-Definition Multimedia Interface Specification" can be obtained
+ * here: http://xtreamerdev.googlecode.com/files/CEC_Specs.pdf
+ * The list of control codes is listed in Table 27: User Control Codes p. 95 */
+
+static struct rc_map_table cec[] = {
+ { 0x00, KEY_OK },
+ { 0x01, KEY_UP },
+ { 0x02, KEY_DOWN },
+ { 0x03, KEY_LEFT },
+ { 0x04, KEY_RIGHT },
+ { 0x05, KEY_RIGHT_UP },
+ { 0x06, KEY_RIGHT_DOWN },
+ { 0x07, KEY_LEFT_UP },
+ { 0x08, KEY_LEFT_DOWN },
+ { 0x09, KEY_CONTEXT_MENU }, /* CEC Spec: Root Menu - see Note 2 */
+ /* Note 2: This is the initial display that a device shows. It is
+ * device-dependent and can be, for example, a contents menu, setup
+ * menu, favorite menu or other menu. The actual menu displayed
+ * may also depend on the device’s current state. */
+ { 0x0a, KEY_SETUP },
+ { 0x0b, KEY_MENU }, /* CEC Spec: Contents Menu */
+ { 0x0c, KEY_FAVORITES }, /* CEC Spec: Favorite Menu */
+ { 0x0d, KEY_EXIT },
+ /* 0x0e-0x1f: Reserved */
+ /* 0x20-0x29: Keys 0 to 9 */
+ { 0x20, KEY_NUMERIC_0 },
+ { 0x21, KEY_NUMERIC_1 },
+ { 0x22, KEY_NUMERIC_2 },
+ { 0x23, KEY_NUMERIC_3 },
+ { 0x24, KEY_NUMERIC_4 },
+ { 0x25, KEY_NUMERIC_5 },
+ { 0x26, KEY_NUMERIC_6 },
+ { 0x27, KEY_NUMERIC_7 },
+ { 0x28, KEY_NUMERIC_8 },
+ { 0x29, KEY_NUMERIC_9 },
+ { 0x2a, KEY_DOT },
+ { 0x2b, KEY_ENTER },
+ { 0x2c, KEY_CLEAR },
+ /* 0x2d-0x2e: Reserved */
+ { 0x2f, KEY_NEXT_FAVORITE }, /* CEC Spec: Next Favorite */
+ { 0x30, KEY_CHANNELUP },
+ { 0x31, KEY_CHANNELDOWN },
+ { 0x32, KEY_PREVIOUS }, /* CEC Spec: Previous Channel */
+ { 0x33, KEY_SOUND }, /* CEC Spec: Sound Select */
+ { 0x34, KEY_VIDEO }, /* 0x34: CEC Spec: Input Select */
+ { 0x35, KEY_INFO }, /* CEC Spec: Display Information */
+ { 0x36, KEY_HELP },
+ { 0x37, KEY_PAGEUP },
+ { 0x38, KEY_PAGEDOWN },
+ /* 0x39-0x3f: Reserved */
+ { 0x40, KEY_POWER },
+ { 0x41, KEY_VOLUMEUP },
+ { 0x42, KEY_VOLUMEDOWN },
+ { 0x43, KEY_MUTE },
+ { 0x44, KEY_PLAY },
+ { 0x45, KEY_STOP },
+ { 0x46, KEY_PAUSE },
+ { 0x47, KEY_RECORD },
+ { 0x48, KEY_REWIND },
+ { 0x49, KEY_FASTFORWARD },
+ { 0x4a, KEY_EJECTCD }, /* CEC Spec: Eject */
+ { 0x4b, KEY_FORWARD },
+ { 0x4c, KEY_BACK },
+ { 0x4d, KEY_STOP_RECORD }, /* CEC Spec: Stop-Record */
+ { 0x4e, KEY_PAUSE_RECORD }, /* CEC Spec: Pause-Record */
+ /* 0x4f: Reserved */
+ { 0x50, KEY_ANGLE },
+ { 0x51, KEY_TV2 },
+ { 0x52, KEY_VOD }, /* CEC Spec: Video on Demand */
+ { 0x53, KEY_EPG },
+ { 0x54, KEY_TIME }, /* CEC Spec: Timer */
+ { 0x55, KEY_CONFIG },
+ /* 0x56-0x5f: Reserved */
+ { 0x60, KEY_PLAY }, /* CEC Spec: Play Function */
+ { 0x6024, KEY_PLAY },
+ { 0x6020, KEY_PAUSE },
+ { 0x61, KEY_PLAYPAUSE }, /* CEC Spec: Pause-Play Function */
+ { 0x62, KEY_RECORD }, /* Spec: Record Function */
+ { 0x63, KEY_PAUSE }, /* CEC Spec: Pause-Record Function */
+ { 0x64, KEY_STOP }, /* CEC Spec: Stop Function */
+ { 0x65, KEY_MUTE }, /* CEC Spec: Mute Function */
+ { 0x66, KEY_UNMUTE }, /* CEC Spec: Restore the volume */
+ /* The following codes are hard to implement at this moment, as they
+ * carry an additional additional argument. Most likely changes to RC
+ * framework are necessary.
+ * For now they are interpreted by the CEC framework as non keycodes
+ * and are passed as messages enabling user application to parse them.
+ * */
+ /* 0x67: CEC Spec: Tune Function */
+ /* 0x68: CEC Spec: Seleect Media Function */
+ /* 0x69: CEC Spec: Select A/V Input Function */
+ /* 0x6a: CEC Spec: Select Audio Input Function */
+ { 0x6b, KEY_POWER }, /* CEC Spec: Power Toggle Function */
+ { 0x6c, KEY_SLEEP }, /* CEC Spec: Power Off Function */
+ { 0x6d, KEY_WAKEUP }, /* CEC Spec: Power On Function */
+ /* 0x6e-0x70: Reserved */
+ { 0x71, KEY_BLUE }, /* CEC Spec: F1 (Blue) */
+ { 0x72, KEY_RED }, /* CEC Spec: F2 (Red) */
+ { 0x73, KEY_GREEN }, /* CEC Spec: F3 (Green) */
+ { 0x74, KEY_YELLOW }, /* CEC Spec: F4 (Yellow) */
+ { 0x75, KEY_F5 },
+ { 0x76, KEY_DVB }, /* CEC Spec: Data - see Note 3 */
+ /* Note 3: This is used, for example, to enter or leave a digital TV
+ * data broadcast application. */
+ /* 0x77-0xff: Reserved */
+};
+
+static struct rc_map_list cec_map = {
+ .map = {
+ .scan = cec,
+ .size = ARRAY_SIZE(cec),
+ .rc_type = RC_TYPE_CEC,
+ .name = RC_MAP_CEC,
+ }
+};
+
+static int __init init_rc_map_cec(void)
+{
+ return rc_map_register(&cec_map);
+}
+
+static void __exit exit_rc_map_cec(void)
+{
+ rc_map_unregister(&cec_map);
+}
+
+module_init(init_rc_map_cec);
+module_exit(exit_rc_map_cec);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kamil Debski");
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 9d015db..905cd90 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -801,6 +801,7 @@ static struct {
{ RC_BIT_MCE_KBD, "mce_kbd" },
{ RC_BIT_LIRC, "lirc" },
{ RC_BIT_XMP, "xmp" },
+ { RC_BIT_CEC, "cec" },
};
/**
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index 45534da..f2e5d35 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -32,6 +32,7 @@ do { \
enum rc_driver_type {
RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */
RC_DRIVER_IR_RAW, /* Needs a Infra-Red pulse/space decoder */
+ RC_DRIVER_CEC,
};
/**
diff --git a/include/media/rc-map.h b/include/media/rc-map.h
index 27763d5..acdca09 100644
--- a/include/media/rc-map.h
+++ b/include/media/rc-map.h
@@ -32,6 +32,7 @@ enum rc_type {
RC_TYPE_RC6_MCE = 17, /* MCE (Philips RC6-6A-32 subtype) protocol */
RC_TYPE_SHARP = 18, /* Sharp protocol */
RC_TYPE_XMP = 19, /* XMP protocol */
+ RC_TYPE_CEC = 20, /* CEC protocol */
};
#define RC_BIT_NONE 0
@@ -55,6 +56,7 @@ enum rc_type {
#define RC_BIT_RC6_MCE (1 << RC_TYPE_RC6_MCE)
#define RC_BIT_SHARP (1 << RC_TYPE_SHARP)
#define RC_BIT_XMP (1 << RC_TYPE_XMP)
+#define RC_BIT_CEC (1 << RC_TYPE_CEC)
#define RC_BIT_ALL (RC_BIT_UNKNOWN | RC_BIT_OTHER | RC_BIT_LIRC | \
RC_BIT_RC5 | RC_BIT_RC5X | RC_BIT_RC5_SZ | \
@@ -63,7 +65,7 @@ enum rc_type {
RC_BIT_NEC | RC_BIT_SANYO | RC_BIT_MCE_KBD | \
RC_BIT_RC6_0 | RC_BIT_RC6_6A_20 | RC_BIT_RC6_6A_24 | \
RC_BIT_RC6_6A_32 | RC_BIT_RC6_MCE | RC_BIT_SHARP | \
- RC_BIT_XMP)
+ RC_BIT_XMP | RC_BIT_CEC)
#define RC_SCANCODE_UNKNOWN(x) (x)
@@ -125,6 +127,7 @@ void rc_map_init(void);
#define RC_MAP_BEHOLD_COLUMBUS "rc-behold-columbus"
#define RC_MAP_BEHOLD "rc-behold"
#define RC_MAP_BUDGET_CI_OLD "rc-budget-ci-old"
+#define RC_MAP_CEC "rc-cec"
#define RC_MAP_CINERGY_1400 "rc-cinergy-1400"
#define RC_MAP_CINERGY "rc-cinergy"
#define RC_MAP_DELOCK_61959 "rc-delock-61959"
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread
* [PATCHv7 07/15] cec: add HDMI CEC framework
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (5 preceding siblings ...)
2015-06-29 10:14 ` Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 08/15] cec.txt: add CEC framework documentation Hans Verkuil
` (7 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil,
Hans Verkuil
The added HDMI CEC framework provides a generic kernel interface for
HDMI CEC devices.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
[k.debski@samsung.com: Merged CEC Updates commit by Hans Verkuil]
[k.debski@samsung.com: Merged Update author commit by Hans Verkuil]
[k.debski@samsung.com: change kthread handling when setting logical
address]
[k.debski@samsung.com: code cleanup and fixes]
[k.debski@samsung.com: add missing CEC commands to match spec]
[k.debski@samsung.com: add RC framework support]
[k.debski@samsung.com: move and edit documentation]
[k.debski@samsung.com: add vendor id reporting]
[k.debski@samsung.com: add possibility to clear assigned logical
addresses]
[k.debski@samsung.com: documentation fixes, clenaup and expansion]
[k.debski@samsung.com: reorder of API structs and add reserved fields]
[k.debski@samsung.com: fix handling of events and fix 32/64bit timespec
problem]
[k.debski@samsung.com: add cec.h to include/uapi/linux/Kbuild]
[k.debski@samsung.com: add sequence number handling]
[k.debski@samsung.com: add passthrough mode]
[k.debski@samsung.com: fix CEC defines, add missing CEC 2.0 commands]
minor additions]
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
MAINTAINERS | 11 +
drivers/media/Kconfig | 6 +
drivers/media/Makefile | 2 +
drivers/media/cec.c | 1580 ++++++++++++++++++++++++++++++++++++++++
include/media/cec.h | 161 ++++
include/uapi/linux/Kbuild | 2 +
include/uapi/linux/cec-funcs.h | 1516 ++++++++++++++++++++++++++++++++++++++
include/uapi/linux/cec.h | 709 ++++++++++++++++++
8 files changed, 3987 insertions(+)
create mode 100644 drivers/media/cec.c
create mode 100644 include/media/cec.h
create mode 100644 include/uapi/linux/cec-funcs.h
create mode 100644 include/uapi/linux/cec.h
diff --git a/MAINTAINERS b/MAINTAINERS
index de3cf29..3791979 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2444,6 +2444,17 @@ F: drivers/net/ieee802154/cc2520.c
F: include/linux/spi/cc2520.h
F: Documentation/devicetree/bindings/net/ieee802154/cc2520.txt
+CEC DRIVER
+M: Hans Verkuil <hans.verkuil@cisco.com>
+L: linux-media@vger.kernel.org
+T: git git://linuxtv.org/media_tree.git
+W: http://linuxtv.org
+S: Supported
+F: drivers/media/cec.c
+F: include/media/cec.h
+F: include/uapi/linux/cec.h
+F: include/uapi/linux/cec-funcs.h
+
CELL BROADBAND ENGINE ARCHITECTURE
M: Arnd Bergmann <arnd@arndb.de>
L: linuxppc-dev@lists.ozlabs.org
diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig
index 8af89b0..41dc55a 100644
--- a/drivers/media/Kconfig
+++ b/drivers/media/Kconfig
@@ -15,6 +15,12 @@ if MEDIA_SUPPORT
comment "Multimedia core support"
+config CEC
+ tristate "CEC API (EXPERIMENTAL)"
+ select RC_CORE
+ ---help---
+ Enable the CEC API.
+
#
# Multimedia support - automatically enable V4L2 and DVB core
#
diff --git a/drivers/media/Makefile b/drivers/media/Makefile
index e608bbc..db66014 100644
--- a/drivers/media/Makefile
+++ b/drivers/media/Makefile
@@ -2,6 +2,8 @@
# Makefile for the kernel multimedia device drivers.
#
+obj-$(CONFIG_CEC) += cec.o
+
media-objs := media-device.o media-devnode.o media-entity.o
#
diff --git a/drivers/media/cec.c b/drivers/media/cec.c
new file mode 100644
index 0000000..2c37675
--- /dev/null
+++ b/drivers/media/cec.c
@@ -0,0 +1,1580 @@
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/kmod.h>
+#include <linux/ktime.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
+#include <media/cec.h>
+
+#define CEC_NUM_DEVICES 256
+#define CEC_NAME "cec"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "debug level (0-2)");
+
+struct cec_transmit_notifier {
+ struct completion c;
+ struct cec_data *data;
+};
+
+#define dprintk(lvl, fmt, arg...) \
+ do { \
+ if (lvl <= debug) \
+ pr_info("cec-%s: " fmt, adap->name, ## arg); \
+ } while (0)
+
+static dev_t cec_dev_t;
+
+/* Active devices */
+static DEFINE_MUTEX(cec_devnode_lock);
+static DECLARE_BITMAP(cec_devnode_nums, CEC_NUM_DEVICES);
+
+/* dev to cec_devnode */
+#define to_cec_devnode(cd) container_of(cd, struct cec_devnode, dev)
+
+static inline struct cec_devnode *cec_devnode_data(struct file *filp)
+{
+ return filp->private_data;
+}
+
+static bool cec_are_adjacent(const struct cec_adapter *adap, u8 la1, u8 la2)
+{
+ u16 pa1 = adap->phys_addrs[la1];
+ u16 pa2 = adap->phys_addrs[la2];
+ u16 mask = 0xf000;
+ int i;
+
+ if (pa1 == 0xffff || pa2 == 0xffff)
+ return false;
+ for (i = 0; i < 3; i++) {
+ if ((pa1 & mask) != (pa2 & mask))
+ break;
+ mask = (mask >> 4) | 0xf000;
+ }
+ if ((pa1 & ~mask) || (pa2 & ~mask))
+ return false;
+ if (!(pa1 & mask) ^ !(pa2 & mask))
+ return true;
+ return false;
+}
+
+static int cec_log_addr2idx(const struct cec_adapter *adap, u8 log_addr)
+{
+ int i;
+
+ for (i = 0; i < adap->num_log_addrs; i++)
+ if (adap->log_addr[i] == log_addr)
+ return i;
+ return -1;
+}
+
+static unsigned cec_log_addr2dev(const struct cec_adapter *adap, u8 log_addr)
+{
+ int i = cec_log_addr2idx(adap, log_addr);
+
+ return adap->prim_device[i < 0 ? 0 : i];
+}
+
+/* Called when the last user of the cec device exits. */
+static void cec_devnode_release(struct device *cd)
+{
+ struct cec_devnode *cecdev = to_cec_devnode(cd);
+
+ mutex_lock(&cec_devnode_lock);
+
+ /* Delete the cdev on this minor as well */
+ cdev_del(&cecdev->cdev);
+
+ /* Mark device node number as free */
+ clear_bit(cecdev->minor, cec_devnode_nums);
+
+ mutex_unlock(&cec_devnode_lock);
+
+ /* Release cec_devnode and perform other cleanups as needed. */
+ if (cecdev->release)
+ cecdev->release(cecdev);
+}
+
+static struct bus_type cec_bus_type = {
+ .name = CEC_NAME,
+};
+
+static bool cec_sleep(struct cec_adapter *adap, int timeout)
+{
+ bool timed_out = false;
+
+ DECLARE_WAITQUEUE(wait, current);
+
+ add_wait_queue(&adap->kthread_waitq, &wait);
+ if (!kthread_should_stop()) {
+ if (timeout < 0) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ } else {
+ timed_out = !schedule_timeout_interruptible
+ (msecs_to_jiffies(timeout));
+ }
+ }
+
+ remove_wait_queue(&adap->kthread_waitq, &wait);
+ return timed_out;
+}
+
+/*
+ * Main CEC state machine
+ *
+ * In the IDLE state the CEC adapter is ready to receive or transmit messages.
+ * If it is woken up it will check if a new message is queued, and if so it
+ * will be transmitted and the state will go to TRANSMITTING.
+ *
+ * When the transmit is marked as done the state machine will check if it
+ * should wait for a reply. If not, it will call the notifier and go back
+ * to the IDLE state. Else it will switch to the WAIT state and wait for a
+ * reply. When the reply arrives it will call the notifier and go back
+ * to IDLE state.
+ *
+ * For the transmit and the wait-for-reply states a timeout is used of
+ * 1 second as per the standard.
+ */
+static int cec_thread_func(void *data)
+{
+ struct cec_adapter *adap = data;
+ int timeout = -1;
+
+ for (;;) {
+ bool timed_out = cec_sleep(adap, timeout);
+
+ if (kthread_should_stop())
+ break;
+ timeout = -1;
+ mutex_lock(&adap->lock);
+ dprintk(2, "state %d timedout: %d tx: %d@%d\n", adap->state,
+ timed_out, adap->tx_qcount, adap->tx_qstart);
+ if (adap->state == CEC_ADAP_STATE_TRANSMITTING && timed_out)
+ adap->adap_transmit_timed_out(adap);
+
+ if (adap->state == CEC_ADAP_STATE_WAIT ||
+ adap->state == CEC_ADAP_STATE_TRANSMITTING) {
+ struct cec_data *data = adap->tx_queue +
+ adap->tx_qstart;
+
+ if (adap->state == CEC_ADAP_STATE_TRANSMITTING &&
+ data->msg.reply && !timed_out &&
+ data->msg.status == CEC_TX_STATUS_OK) {
+ adap->state = CEC_ADAP_STATE_WAIT;
+ timeout = 1000;
+ } else {
+ if (timed_out) {
+ data->msg.reply = 0;
+ if (adap->state ==
+ CEC_ADAP_STATE_TRANSMITTING)
+ data->msg.status =
+ CEC_TX_STATUS_RETRY_TIMEOUT;
+ else
+ data->msg.status =
+ CEC_TX_STATUS_REPLY_TIMEOUT;
+ }
+ adap->state = CEC_ADAP_STATE_IDLE;
+ if (data->func) {
+ mutex_unlock(&adap->lock);
+ data->func(adap, data, data->priv);
+ mutex_lock(&adap->lock);
+ }
+ adap->tx_qstart = (adap->tx_qstart + 1) %
+ CEC_TX_QUEUE_SZ;
+ adap->tx_qcount--;
+ wake_up_interruptible(&adap->waitq);
+ }
+ }
+ if (adap->state == CEC_ADAP_STATE_IDLE && adap->tx_qcount) {
+ adap->state = CEC_ADAP_STATE_TRANSMITTING;
+ timeout = adap->tx_queue[adap->tx_qstart].msg.len == 1 ?
+ 200 : 1000;
+ adap->adap_transmit(adap,
+ &adap->tx_queue[adap->tx_qstart].msg);
+ mutex_unlock(&adap->lock);
+ continue;
+ }
+ mutex_unlock(&adap->lock);
+ }
+ return 0;
+}
+
+static int cec_transmit_notify(struct cec_adapter *adap, struct cec_data *data,
+ void *priv)
+{
+ struct cec_transmit_notifier *n = priv;
+
+ *(n->data) = *data;
+ complete(&n->c);
+ return 0;
+}
+
+int cec_transmit_msg(struct cec_adapter *adap, struct cec_data *data,
+ bool block)
+{
+ struct cec_transmit_notifier notifier;
+ struct cec_msg *msg = &data->msg;
+ bool msg_is_cdc = msg->msg[1] == CEC_MSG_CDC_MESSAGE;
+ int res = 0;
+ unsigned idx;
+
+ if (msg->len == 0 || msg->len > 16) {
+ dprintk(1, "cec_transmit_msg: invalid length %d\n", msg->len);
+ return -EINVAL;
+ }
+ if (msg->reply && (msg->len == 1 ||
+ (cec_msg_is_broadcast(msg) && !msg_is_cdc))) {
+ dprintk(1, "cec_transmit_msg: can't reply for poll or non-CDC broadcast msg\n");
+ return -EINVAL;
+ }
+ if (msg->len > 1 && !cec_msg_is_broadcast(msg) &&
+ cec_msg_initiator(msg) == cec_msg_destination(msg)) {
+ dprintk(1, "cec_transmit_msg: initiator == destination\n");
+ return -EINVAL;
+ }
+ if (cec_msg_initiator(msg) != 0xf &&
+ cec_log_addr2idx(adap, cec_msg_initiator(msg)) < 0) {
+ dprintk(1, "cec_transmit_msg: initiator has unknown logical address\n");
+ return -EINVAL;
+ }
+
+ if (msg->len == 1)
+ dprintk(2, "cec_transmit_msg: 0x%02x%s\n",
+ msg->msg[0], !block ? " nb" : "");
+ else if (msg->reply)
+ dprintk(2, "cec_transmit_msg: 0x%02x 0x%02x (wait for 0x%02x)%s\n",
+ msg->msg[0], msg->msg[1],
+ msg->reply, !block ? " nb" : "");
+ else
+ dprintk(2, "cec_transmit_msg: 0x%02x 0x%02x%s\n",
+ msg->msg[0], msg->msg[1],
+ !block ? " nb" : "");
+
+ msg->status = 0;
+ msg->ts = 0;
+ if (msg->reply)
+ msg->timeout = 1000;
+ if (block) {
+ init_completion(¬ifier.c);
+ notifier.data = data;
+ data->func = cec_transmit_notify;
+ data->priv = ¬ifier;
+ } else {
+ data->func = NULL;
+ data->priv = NULL;
+ }
+ mutex_lock(&adap->lock);
+ idx = (adap->tx_qstart + adap->tx_qcount) % CEC_TX_QUEUE_SZ;
+ if (adap->tx_qcount == CEC_TX_QUEUE_SZ) {
+ dprintk(2, "cec_transmit_msg: queue full\n");
+ res = -EBUSY;
+ } else {
+ adap->tx_queue[idx] = *data;
+ adap->tx_qcount++;
+ if (adap->state == CEC_ADAP_STATE_IDLE)
+ wake_up_interruptible(&adap->kthread_waitq);
+ }
+ msg->sequence = adap->sequence++;
+ data->blocking = block;
+ mutex_unlock(&adap->lock);
+ if (res || !block)
+ return res;
+ wait_for_completion_interruptible(¬ifier.c);
+ mutex_lock(&adap->lock);
+ if (data->func)
+ complete(¬ifier.c);
+ adap->tx_queue[idx].func = NULL;
+ mutex_unlock(&adap->lock);
+ return res;
+}
+EXPORT_SYMBOL_GPL(cec_transmit_msg);
+
+void cec_transmit_done(struct cec_adapter *adap, u32 status)
+{
+ struct cec_msg *msg;
+
+ dprintk(2, "cec_transmit_done\n");
+ mutex_lock(&adap->lock);
+ if (adap->state == CEC_ADAP_STATE_TRANSMITTING) {
+ msg = &adap->tx_queue[adap->tx_qstart].msg;
+ msg->status = status;
+ if (status)
+ msg->reply = 0;
+ msg->ts = ktime_get_ns();
+ wake_up_interruptible(&adap->kthread_waitq);
+ }
+ mutex_unlock(&adap->lock);
+}
+EXPORT_SYMBOL_GPL(cec_transmit_done);
+
+static int cec_report_features(struct cec_adapter *adap, unsigned la_idx)
+{
+ struct cec_data data = { };
+ u8 *features = adap->features[la_idx];
+ bool op_is_dev_features = false;
+ unsigned idx;
+
+ if (adap->cec_version < CEC_OP_CEC_VERSION_2_0)
+ return 0;
+
+ /* Report Features */
+ data.msg.msg[0] = (adap->log_addr[la_idx] << 4) | 0x0f;
+ data.msg.len = 4;
+ data.msg.msg[1] = CEC_MSG_REPORT_FEATURES;
+ data.msg.msg[2] = adap->cec_version;
+ data.msg.msg[3] = adap->all_device_types[la_idx];
+
+ /* Write RC Profiles first, then Device Features */
+ for (idx = 0; idx < sizeof(adap->features[0]); idx++) {
+ data.msg.msg[data.msg.len++] = features[idx];
+ if ((features[idx] & CEC_OP_FEAT_EXT) == 0) {
+ if (op_is_dev_features)
+ break;
+ op_is_dev_features = true;
+ }
+ }
+ return cec_transmit_msg(adap, &data, false);
+}
+
+static int cec_report_phys_addr(struct cec_adapter *adap, unsigned la_idx)
+{
+ struct cec_data data = { };
+
+ /* Report Physical Address */
+ data.msg.msg[0] = (adap->log_addr[la_idx] << 4) | 0x0f;
+ cec_msg_report_physical_addr(&data.msg, adap->phys_addr,
+ adap->prim_device[la_idx]);
+ dprintk(2, "config: la %d pa %x.%x.%x.%x\n",
+ adap->log_addr[la_idx],
+ cec_phys_addr_exp(adap->phys_addr));
+ return cec_transmit_msg(adap, &data, false);
+}
+
+static int cec_feature_abort_reason(struct cec_adapter *adap,
+ struct cec_msg *msg, u8 reason)
+{
+ struct cec_data tx_data = { };
+
+ cec_msg_set_reply_to(&tx_data.msg, msg);
+ cec_msg_feature_abort(&tx_data.msg, msg->msg[1], reason);
+ return cec_transmit_msg(adap, &tx_data, false);
+}
+
+static int cec_feature_abort(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ return cec_feature_abort_reason(adap, msg,
+ CEC_OP_ABORT_UNRECOGNIZED_OP);
+}
+
+static int cec_feature_refused(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ return cec_feature_abort_reason(adap, msg,
+ CEC_OP_ABORT_REFUSED);
+}
+
+static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ bool is_broadcast = cec_msg_is_broadcast(msg);
+ u8 dest_laddr = cec_msg_destination(msg);
+ u8 init_laddr = cec_msg_initiator(msg);
+ u8 devtype = cec_log_addr2dev(adap, dest_laddr);
+ int la_idx = cec_log_addr2idx(adap, dest_laddr);
+ bool is_directed = la_idx >= 0;
+ bool from_unregistered = init_laddr == 0xf;
+ u16 cdc_phys_addr;
+ struct cec_data tx_data = { };
+ u8 *tx_msg = tx_data.msg.msg;
+ int res = 0;
+ unsigned idx;
+
+ if (msg->len <= 1)
+ return 0;
+ if (!is_directed && !is_broadcast && !adap->passthrough)
+ return 0; /* Not for us */
+
+ dprintk(1, "cec_receive_notify: %02x %02x\n", msg->msg[0], msg->msg[1]);
+
+ cec_msg_set_reply_to(&tx_data.msg, msg);
+
+ if (adap->received) {
+ res = adap->received(adap, msg);
+ if (res != -ENOMSG)
+ return 0;
+ res = 0;
+ }
+
+ if (adap->passthrough)
+ goto skip_processing;
+ if (!is_directed && !is_broadcast)
+ return 0;
+
+ switch (msg->msg[1]) {
+ case CEC_MSG_GET_CEC_VERSION:
+ case CEC_MSG_GIVE_DEVICE_VENDOR_ID:
+ case CEC_MSG_ABORT:
+ case CEC_MSG_GIVE_DEVICE_POWER_STATUS:
+ case CEC_MSG_USER_CONTROL_PRESSED:
+ case CEC_MSG_USER_CONTROL_RELEASED:
+ case CEC_MSG_GIVE_FEATURES:
+ case CEC_MSG_GIVE_PHYSICAL_ADDR:
+ case CEC_MSG_GIVE_OSD_NAME:
+ case CEC_MSG_INITIATE_ARC:
+ case CEC_MSG_TERMINATE_ARC:
+ case CEC_MSG_REQUEST_ARC_INITIATION:
+ case CEC_MSG_REQUEST_ARC_TERMINATION:
+ if (is_broadcast || from_unregistered)
+ return 0;
+ break;
+ case CEC_MSG_REPORT_PHYSICAL_ADDR:
+ case CEC_MSG_CDC_MESSAGE:
+ if (!is_broadcast)
+ return 0;
+ break;
+ default:
+ break;
+ }
+
+ if (adap->cec_version < CEC_OP_CEC_VERSION_2_0)
+ goto skip_processing;
+
+ switch (msg->msg[1]) {
+ case CEC_MSG_GET_CEC_VERSION:
+ cec_msg_cec_version(&tx_data.msg, adap->cec_version);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_GIVE_PHYSICAL_ADDR:
+ /* Do nothing for CEC switches using addr 15 */
+ if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH && dest_laddr == 15)
+ return 0;
+ cec_msg_report_physical_addr(&tx_data.msg, adap->phys_addr, devtype);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_REPORT_PHYSICAL_ADDR:
+ adap->phys_addrs[init_laddr] =
+ (msg->msg[2] << 8) | msg->msg[3];
+ dprintk(1, "Reported physical address %04x for logical address %d\n",
+ adap->phys_addrs[init_laddr], init_laddr);
+ break;
+
+ case CEC_MSG_GIVE_DEVICE_VENDOR_ID:
+ if (!(adap->capabilities & CEC_CAP_VENDOR_ID) ||
+ adap->vendor_id == CEC_VENDOR_ID_NONE)
+ return cec_feature_abort(adap, msg);
+ cec_msg_device_vendor_id(&tx_data.msg, adap->vendor_id);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_ABORT:
+ /* Do nothing for CEC switches */
+ if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH)
+ return 0;
+ return cec_feature_refused(adap, msg);
+
+ case CEC_MSG_GIVE_DEVICE_POWER_STATUS:
+ /* Do nothing for CEC switches */
+ if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH)
+ return 0;
+ cec_msg_report_power_status(&tx_data.msg, adap->pwr_state);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_GIVE_OSD_NAME: {
+ if (adap->osd_name[0] == 0)
+ return cec_feature_abort(adap, msg);
+ cec_msg_set_osd_name(&tx_data.msg, adap->osd_name);
+ return cec_transmit_msg(adap, &tx_data, false);
+ }
+
+ case CEC_MSG_USER_CONTROL_PRESSED:
+ if (!(adap->capabilities & CEC_CAP_RC))
+ return cec_feature_abort(adap, msg);
+
+ switch (msg->msg[2]) {
+ /* Play function, this message can have variable length
+ * depending on the specific play function that is used.
+ */
+ case 0x60:
+ if (msg->len == 3)
+ rc_keydown(adap->rc, RC_TYPE_CEC,
+ msg->msg[2] << 8 | msg->msg[3], 0);
+ else
+ rc_keydown(adap->rc, RC_TYPE_CEC, msg->msg[2],
+ 0);
+ break;
+ /* Other function messages that are not handled.
+ * Currently the RC framework does not allow to supply an
+ * additional parameter to a keypress. These "keys" contain
+ * other information such as channel number, an input number
+ * etc.
+ * For the time being these messages are not processed by the
+ * framework and are simply forwarded to the user space.
+ */
+ case 0x67: case 0x68: case 0x69: case 0x6a:
+ break;
+ default:
+ rc_keydown(adap->rc, RC_TYPE_CEC, msg->msg[2], 0);
+ }
+ break;
+ case CEC_MSG_USER_CONTROL_RELEASED:
+ if (!(adap->capabilities & CEC_CAP_RC))
+ return cec_feature_abort(adap, msg);
+ rc_keyup(adap->rc);
+ return 0;
+
+ case CEC_MSG_GIVE_FEATURES:
+ if (adap->cec_version < CEC_OP_CEC_VERSION_2_0)
+ break;
+ return cec_report_features(adap, la_idx);
+
+ case CEC_MSG_REQUEST_ARC_INITIATION:
+ if (!(adap->capabilities & CEC_CAP_ARC))
+ return cec_feature_abort(adap, msg);
+ if (adap->is_sink ||
+ !cec_are_adjacent(adap, dest_laddr, init_laddr))
+ return cec_feature_refused(adap, msg);
+ cec_msg_initiate_arc(&tx_data.msg, false);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_REQUEST_ARC_TERMINATION:
+ if (!(adap->capabilities & CEC_CAP_ARC))
+ return cec_feature_abort(adap, msg);
+ if (adap->is_sink ||
+ !cec_are_adjacent(adap, dest_laddr, init_laddr))
+ return cec_feature_refused(adap, msg);
+ cec_msg_terminate_arc(&tx_data.msg, false);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_INITIATE_ARC:
+ if (!(adap->capabilities & CEC_CAP_ARC))
+ return cec_feature_abort(adap, msg);
+ if (!adap->is_sink ||
+ !cec_are_adjacent(adap, dest_laddr, init_laddr))
+ return cec_feature_refused(adap, msg);
+ if (adap->sink_initiate_arc(adap))
+ return 0;
+ cec_msg_report_arc_initiated(&tx_data.msg);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_TERMINATE_ARC:
+ if (!(adap->capabilities & CEC_CAP_ARC))
+ return cec_feature_abort(adap, msg);
+ if (!adap->is_sink ||
+ !cec_are_adjacent(adap, dest_laddr, init_laddr))
+ return cec_feature_refused(adap, msg);
+ if (adap->sink_terminate_arc(adap))
+ return 0;
+ cec_msg_report_arc_terminated(&tx_data.msg);
+ return cec_transmit_msg(adap, &tx_data, false);
+
+ case CEC_MSG_REPORT_ARC_INITIATED:
+ if (!(adap->capabilities & CEC_CAP_ARC))
+ return cec_feature_abort(adap, msg);
+ if (adap->is_sink ||
+ !cec_are_adjacent(adap, dest_laddr, init_laddr))
+ return cec_feature_refused(adap, msg);
+ adap->source_arc_initiated(adap);
+ return 0;
+
+ case CEC_MSG_REPORT_ARC_TERMINATED:
+ if (!(adap->capabilities & CEC_CAP_ARC))
+ return cec_feature_abort(adap, msg);
+ if (adap->is_sink ||
+ !cec_are_adjacent(adap, dest_laddr, init_laddr))
+ return cec_feature_refused(adap, msg);
+ adap->source_arc_terminated(adap);
+ return 0;
+
+ case CEC_MSG_CDC_MESSAGE: {
+ unsigned shift;
+ unsigned input_port;
+
+ if (!(adap->capabilities & CEC_CAP_CDC))
+ return 0;
+
+ switch (msg->msg[4]) {
+ case CEC_MSG_CDC_HPD_REPORT_STATE:
+ if (adap->is_sink)
+ return 0;
+ break;
+ case CEC_MSG_CDC_HPD_SET_STATE:
+ if (!adap->is_sink)
+ return 0;
+ break;
+ default:
+ return 0;
+ }
+
+ cdc_phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+ input_port = msg->msg[5] >> 4;
+ for (shift = 0; shift < 16; shift += 4) {
+ if (cdc_phys_addr & (0xf000 >> shift))
+ continue;
+ cdc_phys_addr |= input_port << (12 - shift);
+ break;
+ }
+ if (cdc_phys_addr != adap->phys_addr)
+ return 0;
+
+ tx_data.msg.len = 6;
+ /* broadcast reply */
+ tx_msg[0] = (adap->log_addr[0] << 4) | 0xf;
+ tx_msg[1] = CEC_MSG_CDC_MESSAGE;
+ tx_msg[2] = adap->phys_addr >> 8;
+ tx_msg[3] = adap->phys_addr & 0xff;
+ tx_msg[4] = CEC_MSG_CDC_HPD_REPORT_STATE;
+ tx_msg[5] = ((msg->msg[5] & 0xf) << 4) |
+ adap->source_cdc_hpd(adap, msg->msg[5] & 0xf);
+ return cec_transmit_msg(adap, &tx_data, false);
+ }
+ }
+
+ if (is_directed && !(adap->flags[la_idx] & CEC_LOG_ADDRS_FL_HANDLE_MSGS))
+ return cec_feature_abort(adap, msg);
+
+skip_processing:
+ if ((adap->capabilities & CEC_CAP_RECEIVE) == 0) {
+ if (is_directed)
+ return cec_feature_abort(adap, msg);
+ return 0;
+ }
+ mutex_lock(&adap->lock);
+ idx = (adap->rx_qstart + adap->rx_qcount) % CEC_RX_QUEUE_SZ;
+ if (adap->rx_qcount == CEC_RX_QUEUE_SZ) {
+ res = -EBUSY;
+ } else {
+ adap->rx_queue[idx] = *msg;
+ adap->rx_qcount++;
+ wake_up_interruptible(&adap->waitq);
+ }
+ mutex_unlock(&adap->lock);
+ return res;
+}
+
+int cec_receive_msg(struct cec_adapter *adap, struct cec_msg *msg, bool block)
+{
+ int res;
+
+ do {
+ mutex_lock(&adap->lock);
+ if (adap->rx_qcount) {
+ *msg = adap->rx_queue[adap->rx_qstart];
+ adap->rx_qstart = (adap->rx_qstart + 1) %
+ CEC_RX_QUEUE_SZ;
+ adap->rx_qcount--;
+ res = 0;
+ } else {
+ res = -EAGAIN;
+ }
+ mutex_unlock(&adap->lock);
+ if (!block || !res)
+ break;
+ if (msg->timeout) {
+ res = wait_event_interruptible_timeout(adap->waitq,
+ adap->rx_qcount,
+ msecs_to_jiffies(msg->timeout));
+ if (res == 0)
+ res = -ETIMEDOUT;
+ else if (res > 0)
+ res = 0;
+ } else {
+ res = wait_event_interruptible(adap->waitq,
+ adap->rx_qcount);
+ }
+ } while (!res);
+ return res;
+}
+EXPORT_SYMBOL_GPL(cec_receive_msg);
+
+void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ struct cec_data *dst_data = &adap->tx_queue[adap->tx_qstart];
+ bool is_cdc_msg = dst_data->msg.msg[1] == CEC_MSG_CDC_MESSAGE;
+ bool is_reply = false;
+
+ mutex_lock(&adap->lock);
+ msg->ts = ktime_get_ns();
+ dprintk(2, "cec_received_msg: %02x %02x\n", msg->msg[0], msg->msg[1]);
+ if (msg->len > 1 && adap->state == CEC_ADAP_STATE_WAIT &&
+ cec_msg_initiator(msg) == cec_msg_destination(&dst_data->msg)) {
+ struct cec_msg *dst = &dst_data->msg;
+ /* TODO: check phys address */
+ bool is_valid_reply = is_cdc_msg ?
+ msg->msg[1] == CEC_MSG_CDC_MESSAGE &&
+ msg->msg[4] == dst->reply :
+ msg->msg[1] == dst->reply;
+
+ if (is_valid_reply ||
+ msg->msg[1] == CEC_MSG_FEATURE_ABORT) {
+ msg->sequence = dst->sequence;
+ *dst = *msg;
+ is_reply = true;
+ if (msg->msg[1] == CEC_MSG_FEATURE_ABORT) {
+ dst->reply = 0;
+ dst->status = CEC_TX_STATUS_FEATURE_ABORT;
+ }
+ wake_up_interruptible(&adap->kthread_waitq);
+ }
+ }
+ mutex_unlock(&adap->lock);
+ if (!is_reply || (is_reply && !dst_data->blocking))
+ adap->recv_notifier(adap, msg);
+ if (is_reply && !dst_data->blocking)
+ cec_post_event(adap, CEC_EVENT_GOT_REPLY, msg->sequence);
+}
+EXPORT_SYMBOL_GPL(cec_received_msg);
+
+void cec_post_event(struct cec_adapter *adap, u32 event, u32 sequence)
+{
+ unsigned idx;
+
+ mutex_lock(&adap->lock);
+ if (adap->ev_qcount == CEC_EV_QUEUE_SZ) {
+ /* Drop oldest event */
+ adap->ev_qstart = (adap->ev_qstart + 1) % CEC_EV_QUEUE_SZ;
+ adap->ev_qcount--;
+ }
+
+ idx = (adap->ev_qstart + adap->ev_qcount) % CEC_EV_QUEUE_SZ;
+
+ adap->ev_queue[idx].event = event;
+ adap->ev_queue[idx].sequence = sequence;
+ adap->ev_queue[idx].ts = ktime_get_ns();
+
+ adap->ev_qcount++;
+ mutex_unlock(&adap->lock);
+}
+EXPORT_SYMBOL_GPL(cec_post_event);
+
+int cec_enable(struct cec_adapter *adap, bool enable)
+{
+ int ret;
+
+ mutex_lock(&adap->lock);
+ ret = adap->adap_enable(adap, enable);
+ if (ret) {
+ mutex_unlock(&adap->lock);
+ return ret;
+ }
+ if (!enable) {
+ adap->state = CEC_ADAP_STATE_DISABLED;
+ adap->tx_qcount = 0;
+ adap->rx_qcount = 0;
+ adap->ev_qcount = 0;
+ adap->num_log_addrs = 0;
+ memset(adap->phys_addrs, 0xff, sizeof(adap->phys_addrs));
+ wake_up_interruptible(&adap->waitq);
+ } else {
+ adap->state = CEC_ADAP_STATE_UNCONF;
+ }
+ mutex_unlock(&adap->lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cec_enable);
+
+struct cec_log_addrs_int {
+ struct cec_adapter *adap;
+ struct cec_log_addrs log_addrs;
+ struct completion c;
+ bool free_on_exit;
+ int err;
+};
+
+static int cec_config_log_addrs(struct cec_adapter *adap,
+ struct cec_log_addrs *log_addrs)
+{
+ static const u8 tv_log_addrs[] = {
+ 0, CEC_LOG_ADDR_INVALID
+ };
+ static const u8 record_log_addrs[] = {
+ 1, 2, 9, 12, 13, CEC_LOG_ADDR_INVALID
+ };
+ static const u8 tuner_log_addrs[] = {
+ 3, 6, 7, 10, 12, 13, CEC_LOG_ADDR_INVALID
+ };
+ static const u8 playback_log_addrs[] = {
+ 4, 8, 11, 12, 13, CEC_LOG_ADDR_INVALID
+ };
+ static const u8 audiosystem_log_addrs[] = {
+ 5, 12, 13, CEC_LOG_ADDR_INVALID
+ };
+ static const u8 specific_use_log_addrs[] = {
+ 14, 12, 13, CEC_LOG_ADDR_INVALID
+ };
+ static const u8 unregistered_log_addrs[] = {
+ CEC_LOG_ADDR_INVALID
+ };
+ static const u8 *type2addrs[7] = {
+ [CEC_LOG_ADDR_TYPE_TV] = tv_log_addrs,
+ [CEC_LOG_ADDR_TYPE_RECORD] = record_log_addrs,
+ [CEC_LOG_ADDR_TYPE_TUNER] = tuner_log_addrs,
+ [CEC_LOG_ADDR_TYPE_PLAYBACK] = playback_log_addrs,
+ [CEC_LOG_ADDR_TYPE_AUDIOSYSTEM] = audiosystem_log_addrs,
+ [CEC_LOG_ADDR_TYPE_SPECIFIC] = specific_use_log_addrs,
+ [CEC_LOG_ADDR_TYPE_UNREGISTERED] = unregistered_log_addrs,
+ };
+ struct cec_data data;
+ u32 claimed_addrs = 0;
+ int i, j;
+ int err;
+
+ if (adap->phys_addr) {
+ /* The TV functionality can only map to physical address 0.
+ For any other address, try the Specific functionality
+ instead as per the spec. */
+ for (i = 0; i < log_addrs->num_log_addrs; i++)
+ if (log_addrs->log_addr_type[i] == CEC_LOG_ADDR_TYPE_TV)
+ log_addrs->log_addr_type[i] =
+ CEC_LOG_ADDR_TYPE_SPECIFIC;
+ }
+
+ dprintk(2, "physical address: %x.%x.%x.%x, claim %d logical addresses\n",
+ cec_phys_addr_exp(adap->phys_addr),
+ log_addrs->num_log_addrs);
+ adap->num_log_addrs = 0;
+ adap->state = CEC_ADAP_STATE_IDLE;
+ strlcpy(adap->osd_name, log_addrs->osd_name, sizeof(adap->osd_name));
+
+ /* TODO: remember last used logical addr type to achieve
+ faster logical address polling by trying that one first.
+ */
+ for (i = 0; i < log_addrs->num_log_addrs; i++) {
+ const u8 *la_list = type2addrs[log_addrs->log_addr_type[i]];
+
+ if (kthread_should_stop())
+ return -EINTR;
+
+ for (j = 0; la_list[j] != CEC_LOG_ADDR_INVALID; j++) {
+ u8 log_addr = la_list[j];
+
+ if (claimed_addrs & (1 << log_addr))
+ continue;
+
+ /* Send polling message */
+ data.msg.len = 1;
+ data.msg.msg[0] = 0xf0 | log_addr;
+ data.msg.reply = 0;
+ err = cec_transmit_msg(adap, &data, true);
+ if (err)
+ return err;
+ if (data.msg.status == CEC_TX_STATUS_RETRY_TIMEOUT) {
+ unsigned idx = adap->num_log_addrs++;
+
+ /* Message not acknowledged, so this logical
+ address is free to use. */
+ claimed_addrs |= 1 << log_addr;
+ adap->log_addr[idx] = log_addr;
+ log_addrs->log_addr[i] = log_addr;
+ adap->flags[idx] = log_addrs->flags[i] &
+ CEC_LOG_ADDRS_FL_HANDLE_MSGS;
+ adap->log_addr_type[idx] =
+ log_addrs->log_addr_type[i];
+ adap->prim_device[idx] =
+ log_addrs->primary_device_type[i];
+ adap->all_device_types[idx] =
+ log_addrs->all_device_types[i];
+ adap->phys_addrs[log_addr] = adap->phys_addr;
+ memcpy(adap->features[idx], log_addrs->features[i],
+ sizeof(adap->features[idx]));
+ err = adap->adap_log_addr(adap, log_addr);
+ dprintk(2, "claim addr %d (%d)\n", log_addr,
+ adap->prim_device[idx]);
+ if (err)
+ return err;
+ /*
+ * Report Features must come first according
+ * to CEC 2.0
+ */
+ cec_report_features(adap, idx);
+ cec_report_phys_addr(adap, idx);
+ if (adap->claimed_log_addr)
+ adap->claimed_log_addr(adap, idx);
+ break;
+ }
+ }
+ }
+ if (adap->num_log_addrs == 0) {
+ if (log_addrs->num_log_addrs > 1)
+ dprintk(2, "could not claim last %d addresses\n",
+ log_addrs->num_log_addrs - 1);
+ adap->log_addr[0] = 15;
+ adap->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED;
+ adap->prim_device[0] = CEC_OP_PRIM_DEVTYPE_SWITCH;
+ adap->flags[0] = 0;
+ adap->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH;
+ err = adap->adap_log_addr(adap, 15);
+ dprintk(2, "claim addr %d (%d)\n", 15, adap->prim_device[0]);
+ if (err)
+ return err;
+ adap->num_log_addrs = 1;
+ /* TODO: do we need to do this for an unregistered device? */
+ cec_report_phys_addr(adap, 0);
+ if (adap->claimed_log_addr)
+ adap->claimed_log_addr(adap, 0);
+ }
+ return 0;
+}
+
+static int cec_config_thread_func(void *arg)
+{
+ struct cec_log_addrs_int *cla_int = arg;
+ int err;
+
+ cla_int->err = err = cec_config_log_addrs(cla_int->adap,
+ &cla_int->log_addrs);
+ cla_int->adap->kthread_config = NULL;
+ if (cla_int->free_on_exit)
+ kfree(cla_int);
+ else
+ complete(&cla_int->c);
+
+ cec_post_event(cla_int->adap, CEC_EVENT_READY, 0);
+ return err;
+}
+
+int cec_claim_log_addrs(struct cec_adapter *adap,
+ struct cec_log_addrs *log_addrs, bool block)
+{
+ struct cec_log_addrs_int *cla_int;
+ int i;
+
+ if (adap->state == CEC_ADAP_STATE_DISABLED)
+ return -ENONET;
+
+ if (log_addrs->num_log_addrs > CEC_MAX_LOG_ADDRS) {
+ dprintk(1, "num_log_addrs > %d\n", CEC_MAX_LOG_ADDRS);
+ return -EINVAL;
+ }
+ if (log_addrs->num_log_addrs == 0) {
+ adap->num_log_addrs = 0;
+ adap->tx_qcount = 0;
+ adap->rx_qcount = 0;
+ adap->ev_qcount = 0;
+ adap->state = CEC_ADAP_STATE_UNCONF;
+ wake_up_interruptible(&adap->waitq);
+ return 0;
+ }
+ if (log_addrs->cec_version != CEC_OP_CEC_VERSION_1_4 &&
+ log_addrs->cec_version != CEC_OP_CEC_VERSION_2_0) {
+ dprintk(1, "unsupported CEC version\n");
+ return -EINVAL;
+ }
+ if (log_addrs->num_log_addrs > 1)
+ for (i = 0; i < log_addrs->num_log_addrs; i++)
+ if (log_addrs->log_addr_type[i] ==
+ CEC_LOG_ADDR_TYPE_UNREGISTERED) {
+ dprintk(1, "can't claim unregistered logical address\n");
+ return -EINVAL;
+ }
+ for (i = 0; i < log_addrs->num_log_addrs; i++) {
+ u8 *features = log_addrs->features[i];
+ bool op_is_dev_features = false;
+
+ if (log_addrs->primary_device_type[i] >
+ CEC_OP_PRIM_DEVTYPE_PROCESSOR) {
+ dprintk(1, "unknown primary device type\n");
+ return -EINVAL;
+ }
+ if (log_addrs->primary_device_type[i] == 2) {
+ dprintk(1, "invalid primary device type\n");
+ return -EINVAL;
+ }
+ if (log_addrs->log_addr_type[i] > CEC_LOG_ADDR_TYPE_UNREGISTERED) {
+ dprintk(1, "unknown logical address type\n");
+ return -EINVAL;
+ }
+ if (log_addrs->cec_version < CEC_OP_CEC_VERSION_2_0)
+ continue;
+
+ for (i = 0; i < sizeof(adap->features[0]); i++) {
+ if ((features[i] & 0x80) == 0) {
+ if (op_is_dev_features)
+ break;
+ op_is_dev_features = true;
+ }
+ }
+ if (!op_is_dev_features || i == sizeof(adap->features[0])) {
+ dprintk(1, "malformed features\n");
+ return -EINVAL;
+ }
+ }
+
+ /* For phys addr 0xffff only the Unregistered functionality is
+ allowed. */
+ if (adap->phys_addr == 0xffff &&
+ (log_addrs->num_log_addrs > 1 ||
+ log_addrs->log_addr_type[0] != CEC_LOG_ADDR_TYPE_UNREGISTERED)) {
+ dprintk(1, "physical addr 0xffff only allows unregistered logical address\n");
+ return -EINVAL;
+ }
+
+ cla_int = kzalloc(sizeof(*cla_int), GFP_KERNEL);
+ if (cla_int == NULL)
+ return -ENOMEM;
+ init_completion(&cla_int->c);
+ cla_int->free_on_exit = !block;
+ cla_int->adap = adap;
+ cla_int->log_addrs = *log_addrs;
+ adap->kthread_config = kthread_run(cec_config_thread_func, cla_int,
+ "cec_log_addrs");
+ if (block) {
+ wait_for_completion(&cla_int->c);
+ *log_addrs = cla_int->log_addrs;
+ kfree(cla_int);
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cec_claim_log_addrs);
+
+u8 cec_sink_cdc_hpd(struct cec_adapter *adap, u8 input_port, u8 cdc_hpd_state)
+{
+ struct cec_data data;
+ struct cec_msg *msg = &data.msg;
+ int err;
+
+ if (adap->state <= CEC_ADAP_STATE_UNCONF)
+ return CEC_OP_HPD_ERROR_INITIATOR_WRONG_STATE;
+
+ msg->len = 6;
+ msg->reply = CEC_MSG_CDC_HPD_REPORT_STATE;
+ msg->msg[0] = (adap->log_addr[0] << 4) | 0xf;
+ msg->msg[1] = CEC_MSG_CDC_MESSAGE;
+ msg->msg[2] = adap->phys_addr >> 8;
+ msg->msg[3] = adap->phys_addr & 0xff;
+ msg->msg[4] = CEC_MSG_CDC_HPD_SET_STATE;
+ msg->msg[5] = (input_port << 4) | cdc_hpd_state;
+ err = cec_transmit_msg(adap, &data, false);
+ if (err)
+ return err;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cec_sink_cdc_hpd);
+
+static unsigned int cec_poll(struct file *filp,
+ struct poll_table_struct *poll)
+{
+ struct cec_devnode *cecdev = cec_devnode_data(filp);
+ struct cec_adapter *adap = to_cec_adapter(cecdev);
+ unsigned res = 0;
+
+ if (!cec_devnode_is_registered(cecdev))
+ return POLLERR | POLLHUP;
+ mutex_lock(&adap->lock);
+ if (adap->tx_qcount < CEC_TX_QUEUE_SZ)
+ res |= POLLOUT | POLLWRNORM;
+ if (adap->rx_qcount)
+ res |= POLLIN | POLLRDNORM;
+ if (adap->ev_qcount)
+ res |= POLLPRI;
+ poll_wait(filp, &adap->waitq, poll);
+ mutex_unlock(&adap->lock);
+ return res;
+}
+
+static long cec_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ struct cec_devnode *cecdev = cec_devnode_data(filp);
+ struct cec_adapter *adap = to_cec_adapter(cecdev);
+ void __user *parg = (void __user *)arg;
+ int err;
+
+ if (!cec_devnode_is_registered(cecdev))
+ return -EIO;
+
+ switch (cmd) {
+ case CEC_G_CAPS: {
+ struct cec_caps caps;
+
+ caps.available_log_addrs = adap->available_log_addrs;
+ caps.capabilities = adap->capabilities;
+ memset(caps.reserved, 0, sizeof(caps.reserved));
+ if (copy_to_user(parg, &caps, sizeof(caps)))
+ return -EFAULT;
+ break;
+ }
+
+ case CEC_TRANSMIT: {
+ struct cec_data data;
+
+ if (!(adap->capabilities & CEC_CAP_TRANSMIT))
+ return -ENOTTY;
+ if (copy_from_user(&data.msg, parg, sizeof(data.msg)))
+ return -EFAULT;
+ memset(data.msg.reserved, 0, sizeof(data.msg.reserved));
+ if (adap->state <= CEC_ADAP_STATE_UNCONF)
+ return -ENONET;
+
+ err = cec_transmit_msg(adap, &data,
+ !(filp->f_flags & O_NONBLOCK));
+ if (err)
+ return err;
+ if (copy_to_user(parg, &data.msg, sizeof(data.msg)))
+ return -EFAULT;
+ break;
+ }
+
+ case CEC_RECEIVE: {
+ struct cec_data data;
+
+ if (!(adap->capabilities & CEC_CAP_RECEIVE))
+ return -ENOTTY;
+ if (copy_from_user(&data.msg, parg, sizeof(data.msg)))
+ return -EFAULT;
+ memset(data.msg.reserved, 0, sizeof(data.msg.reserved));
+ if (adap->state <= CEC_ADAP_STATE_UNCONF)
+ return -ENONET;
+
+ err = cec_receive_msg(adap, &data.msg,
+ !(filp->f_flags & O_NONBLOCK));
+ if (err)
+ return err;
+ if (copy_to_user(parg, &data.msg, sizeof(data.msg)))
+ return -EFAULT;
+ break;
+ }
+
+ case CEC_G_EVENT: {
+ struct cec_event ev;
+
+ mutex_lock(&adap->lock);
+ err = -EAGAIN;
+ if (adap->state <= CEC_ADAP_STATE_UNCONF) {
+ err = -ENONET;
+ } else if (adap->ev_qcount) {
+ err = 0;
+ ev = adap->ev_queue[adap->ev_qstart];
+ adap->ev_qstart = (adap->ev_qstart + 1) % CEC_EV_QUEUE_SZ;
+ adap->ev_qcount--;
+ }
+ mutex_unlock(&adap->lock);
+ if (err)
+ return err;
+ if (copy_to_user((void __user *)arg, &ev, sizeof(ev)))
+ return -EFAULT;
+ break;
+ }
+
+ case CEC_G_ADAP_STATE: {
+ u32 state = adap->state != CEC_ADAP_STATE_DISABLED;
+
+ if (copy_to_user(parg, &state, sizeof(state)))
+ return -EFAULT;
+ break;
+ }
+
+ case CEC_S_ADAP_STATE: {
+ u32 state;
+
+ if (!(adap->capabilities & CEC_CAP_STATE))
+ return -ENOTTY;
+ if (copy_from_user(&state, parg, sizeof(state)))
+ return -EFAULT;
+ if (!state && adap->state == CEC_ADAP_STATE_DISABLED)
+ return 0;
+ if (state && adap->state != CEC_ADAP_STATE_DISABLED)
+ return 0;
+ cec_enable(adap, !!state);
+ break;
+ }
+
+ case CEC_G_ADAP_PHYS_ADDR:
+ if (copy_to_user(parg, &adap->phys_addr,
+ sizeof(adap->phys_addr)))
+ return -EFAULT;
+ break;
+
+ case CEC_S_ADAP_PHYS_ADDR: {
+ u16 phys_addr;
+
+ if (!(adap->capabilities & CEC_CAP_PHYS_ADDR))
+ return -ENOTTY;
+ if (copy_from_user(&phys_addr, parg, sizeof(phys_addr)))
+ return -EFAULT;
+ if (adap->phys_addr == phys_addr)
+ return 0;
+ if (adap->state > CEC_ADAP_STATE_UNCONF)
+ return -EBUSY;
+ adap->phys_addr = phys_addr;
+ break;
+ }
+
+ case CEC_S_ADAP_LOG_ADDRS: {
+ struct cec_log_addrs log_addrs;
+
+ if (!(adap->capabilities & CEC_CAP_LOG_ADDRS))
+ return -ENOTTY;
+ if (copy_from_user(&log_addrs, parg, sizeof(log_addrs)))
+ return -EFAULT;
+ memset(log_addrs.reserved, 0, sizeof(log_addrs.reserved));
+ if (log_addrs.num_log_addrs &&
+ adap->state > CEC_ADAP_STATE_UNCONF)
+ return -EBUSY;
+
+ err = cec_claim_log_addrs(adap, &log_addrs,
+ !(filp->f_flags & O_NONBLOCK));
+ if (err)
+ return err;
+
+ if (filp->f_flags & O_NONBLOCK) {
+ if (copy_to_user(parg, &log_addrs, sizeof(log_addrs)))
+ return -EFAULT;
+ break;
+ }
+
+ /* fall through */
+ }
+
+ case CEC_G_ADAP_LOG_ADDRS: {
+ struct cec_log_addrs log_addrs = { adap->cec_version };
+ unsigned i;
+
+ log_addrs.num_log_addrs = adap->num_log_addrs;
+ strlcpy(log_addrs.osd_name, adap->osd_name,
+ sizeof(log_addrs.osd_name));
+ for (i = 0; i < adap->num_log_addrs; i++) {
+ log_addrs.primary_device_type[i] = adap->prim_device[i];
+ log_addrs.log_addr_type[i] = adap->log_addr_type[i];
+ log_addrs.log_addr[i] = adap->log_addr[i];
+ log_addrs.flags[i] = adap->flags[i];
+ log_addrs.all_device_types[i] = adap->all_device_types[i];
+ memcpy(log_addrs.features[i], adap->features[i],
+ sizeof(log_addrs.features[i]));
+ }
+
+ if (copy_to_user(parg, &log_addrs, sizeof(log_addrs)))
+ return -EFAULT;
+ break;
+ }
+
+ case CEC_G_VENDOR_ID:
+ if (copy_to_user(parg, &adap->vendor_id,
+ sizeof(adap->vendor_id)))
+ return -EFAULT;
+ break;
+
+ case CEC_S_VENDOR_ID: {
+ u32 vendor_id;
+
+ if (!(adap->capabilities & CEC_CAP_VENDOR_ID))
+ return -ENOTTY;
+ if (copy_from_user(&vendor_id, parg, sizeof(vendor_id)))
+ return -EFAULT;
+ /* Vendor ID is a 24 bit number, so check if the value is
+ * within the correct range. */
+ if (vendor_id != CEC_VENDOR_ID_NONE &&
+ (vendor_id & 0xff000000) != 0)
+ return -EINVAL;
+ if (adap->vendor_id == vendor_id)
+ return 0;
+ if (adap->state > CEC_ADAP_STATE_UNCONF)
+ return -EBUSY;
+ adap->vendor_id = vendor_id;
+ break;
+ }
+
+ case CEC_G_PASSTHROUGH: {
+ u32 state = adap->passthrough;
+
+ if (copy_to_user(parg, &state, sizeof(state)))
+ return -EFAULT;
+ break;
+ }
+
+ case CEC_S_PASSTHROUGH: {
+ u32 state;
+
+ if (!(adap->capabilities & CEC_CAP_PASSTHROUGH))
+ return -ENOTTY;
+ if (copy_from_user(&state, parg, sizeof(state)))
+ return -EFAULT;
+ if (state == CEC_PASSTHROUGH_DISABLED)
+ adap->passthrough = state;
+ else if (state == CEC_PASSTHROUGH_ENABLED)
+ adap->passthrough = state;
+ else
+ return -EINVAL;
+ break;
+ }
+
+ default:
+ return -ENOTTY;
+ }
+ return 0;
+}
+
+/* Override for the open function */
+static int cec_open(struct inode *inode, struct file *filp)
+{
+ struct cec_devnode *cecdev;
+
+ /* Check if the cec device is available. This needs to be done with
+ * the cec_devnode_lock held to prevent an open/unregister race:
+ * without the lock, the device could be unregistered and freed between
+ * the cec_devnode_is_registered() and get_device() calls, leading to
+ * a crash.
+ */
+ mutex_lock(&cec_devnode_lock);
+ cecdev = container_of(inode->i_cdev, struct cec_devnode, cdev);
+ /* return ENXIO if the cec device has been removed
+ already or if it is not registered anymore. */
+ if (!cec_devnode_is_registered(cecdev)) {
+ mutex_unlock(&cec_devnode_lock);
+ return -ENXIO;
+ }
+ /* and increase the device refcount */
+ get_device(&cecdev->dev);
+ mutex_unlock(&cec_devnode_lock);
+
+ filp->private_data = cecdev;
+
+ return 0;
+}
+
+/* Override for the release function */
+static int cec_release(struct inode *inode, struct file *filp)
+{
+ struct cec_devnode *cecdev = cec_devnode_data(filp);
+ int ret = 0;
+
+ /* decrease the refcount unconditionally since the release()
+ return value is ignored. */
+ put_device(&cecdev->dev);
+ filp->private_data = NULL;
+ return ret;
+}
+
+static const struct file_operations cec_devnode_fops = {
+ .owner = THIS_MODULE,
+ .open = cec_open,
+ .unlocked_ioctl = cec_ioctl,
+ .release = cec_release,
+ .poll = cec_poll,
+ .llseek = no_llseek,
+};
+
+/**
+ * cec_devnode_register - register a cec device node
+ * @cecdev: cec device node structure we want to register
+ *
+ * The registration code assigns minor numbers and registers the new device node
+ * with the kernel. An error is returned if no free minor number can be found,
+ * or if the registration of the device node fails.
+ *
+ * Zero is returned on success.
+ *
+ * Note that if the cec_devnode_register call fails, the release() callback of
+ * the cec_devnode structure is *not* called, so the caller is responsible for
+ * freeing any data.
+ */
+static int __must_check cec_devnode_register(struct cec_devnode *cecdev,
+ struct module *owner)
+{
+ int minor;
+ int ret;
+
+ /* Part 1: Find a free minor number */
+ mutex_lock(&cec_devnode_lock);
+ minor = find_next_zero_bit(cec_devnode_nums, CEC_NUM_DEVICES, 0);
+ if (minor == CEC_NUM_DEVICES) {
+ mutex_unlock(&cec_devnode_lock);
+ pr_err("could not get a free minor\n");
+ return -ENFILE;
+ }
+
+ set_bit(minor, cec_devnode_nums);
+ mutex_unlock(&cec_devnode_lock);
+
+ cecdev->minor = minor;
+
+ /* Part 2: Initialize and register the character device */
+ cdev_init(&cecdev->cdev, &cec_devnode_fops);
+ cecdev->cdev.owner = owner;
+
+ ret = cdev_add(&cecdev->cdev, MKDEV(MAJOR(cec_dev_t), cecdev->minor),
+ 1);
+ if (ret < 0) {
+ pr_err("%s: cdev_add failed\n", __func__);
+ goto error;
+ }
+
+ /* Part 3: Register the cec device */
+ cecdev->dev.bus = &cec_bus_type;
+ cecdev->dev.devt = MKDEV(MAJOR(cec_dev_t), cecdev->minor);
+ cecdev->dev.release = cec_devnode_release;
+ if (cecdev->parent)
+ cecdev->dev.parent = cecdev->parent;
+ dev_set_name(&cecdev->dev, "cec%d", cecdev->minor);
+ ret = device_register(&cecdev->dev);
+ if (ret < 0) {
+ pr_err("%s: device_register failed\n", __func__);
+ goto error;
+ }
+
+ /* Part 4: Activate this minor. The char device can now be used. */
+ set_bit(CEC_FLAG_REGISTERED, &cecdev->flags);
+
+ return 0;
+
+error:
+ cdev_del(&cecdev->cdev);
+ clear_bit(cecdev->minor, cec_devnode_nums);
+ return ret;
+}
+
+/**
+ * cec_devnode_unregister - unregister a cec device node
+ * @cecdev: the device node to unregister
+ *
+ * This unregisters the passed device. Future open calls will be met with
+ * errors.
+ *
+ * This function can safely be called if the device node has never been
+ * registered or has already been unregistered.
+ */
+static void cec_devnode_unregister(struct cec_devnode *cecdev)
+{
+ /* Check if cecdev was ever registered at all */
+ if (!cec_devnode_is_registered(cecdev))
+ return;
+
+ mutex_lock(&cec_devnode_lock);
+ clear_bit(CEC_FLAG_REGISTERED, &cecdev->flags);
+ mutex_unlock(&cec_devnode_lock);
+ device_unregister(&cecdev->dev);
+}
+
+int cec_create_adapter(struct cec_adapter *adap, const char *name, u32 caps,
+ bool is_sink, struct module *owner, struct device *parent)
+{
+ int res = 0;
+
+ adap->owner = owner;
+ WARN_ON(!owner);
+ adap->devnode.parent = parent;
+ WARN_ON(!parent);
+ adap->state = CEC_ADAP_STATE_DISABLED;
+ adap->name = name;
+ adap->is_sink = is_sink;
+ adap->phys_addr = 0xffff;
+ adap->capabilities = caps;
+ adap->cec_version = CEC_OP_CEC_VERSION_2_0;
+ adap->vendor_id = CEC_VENDOR_ID_NONE;
+ adap->available_log_addrs = 1;
+ adap->sequence = 0;
+ memset(adap->phys_addrs, 0xff, sizeof(adap->phys_addrs));
+ mutex_init(&adap->lock);
+ adap->kthread = kthread_run(cec_thread_func, adap, name);
+ init_waitqueue_head(&adap->kthread_waitq);
+ init_waitqueue_head(&adap->waitq);
+ if (IS_ERR(adap->kthread)) {
+ pr_err("cec-%s: kernel_thread() failed\n", name);
+ return PTR_ERR(adap->kthread);
+ }
+ if (caps) {
+ res = cec_devnode_register(&adap->devnode, adap->owner);
+ if (res) {
+ kthread_stop(adap->kthread);
+ return res;
+ }
+ }
+ adap->recv_notifier = cec_receive_notify;
+
+ if (!(caps & CEC_CAP_RC))
+ return 0;
+
+ /* Prepare the RC input device */
+ adap->rc = rc_allocate_device();
+ if (!adap->rc) {
+ pr_err("cec-%s: failed to allocate memory for rc_dev\n", name);
+ cec_devnode_unregister(&adap->devnode);
+ kthread_stop(adap->kthread);
+ return -ENOMEM;
+ }
+
+ snprintf(adap->input_name, sizeof(adap->input_name), "RC for %s", name);
+ snprintf(adap->input_phys, sizeof(adap->input_phys), "%s/input0", name);
+ strncpy(adap->input_drv, name, sizeof(adap->input_drv));
+
+ adap->rc->input_name = adap->input_name;
+ adap->rc->input_phys = adap->input_phys;
+ adap->rc->input_id.bustype = BUS_CEC;
+ adap->rc->input_id.vendor = 0;
+ adap->rc->input_id.product = 0;
+ adap->rc->input_id.version = 1;
+ adap->rc->dev.parent = adap->devnode.parent;
+ adap->rc->driver_name = adap->input_drv;
+ adap->rc->driver_type = RC_DRIVER_CEC;
+ adap->rc->allowed_protocols = RC_BIT_CEC;
+ adap->rc->priv = adap;
+ adap->rc->map_name = RC_MAP_CEC;
+ adap->rc->timeout = MS_TO_NS(100);
+
+ res = rc_register_device(adap->rc);
+
+ if (res) {
+ pr_err("cec-%s: failed to prepare input device\n", name);
+ cec_devnode_unregister(&adap->devnode);
+ rc_free_device(adap->rc);
+ kthread_stop(adap->kthread);
+ }
+
+ return res;
+}
+EXPORT_SYMBOL_GPL(cec_create_adapter);
+
+void cec_delete_adapter(struct cec_adapter *adap)
+{
+ if (adap->kthread == NULL)
+ return;
+ kthread_stop(adap->kthread);
+ if (adap->kthread_config)
+ kthread_stop(adap->kthread_config);
+ if (adap->state != CEC_ADAP_STATE_DISABLED)
+ cec_enable(adap, false);
+ rc_unregister_device(adap->rc);
+ if (cec_devnode_is_registered(&adap->devnode))
+ cec_devnode_unregister(&adap->devnode);
+}
+EXPORT_SYMBOL_GPL(cec_delete_adapter);
+
+/*
+ * Initialise cec for linux
+ */
+static int __init cec_devnode_init(void)
+{
+ int ret;
+
+ pr_info("Linux cec interface: v0.10\n");
+ ret = alloc_chrdev_region(&cec_dev_t, 0, CEC_NUM_DEVICES,
+ CEC_NAME);
+ if (ret < 0) {
+ pr_warn("cec: unable to allocate major\n");
+ return ret;
+ }
+
+ ret = bus_register(&cec_bus_type);
+ if (ret < 0) {
+ unregister_chrdev_region(cec_dev_t, CEC_NUM_DEVICES);
+ pr_warn("cec: bus_register failed\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void __exit cec_devnode_exit(void)
+{
+ bus_unregister(&cec_bus_type);
+ unregister_chrdev_region(cec_dev_t, CEC_NUM_DEVICES);
+}
+
+subsys_initcall(cec_devnode_init);
+module_exit(cec_devnode_exit)
+
+MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
+MODULE_DESCRIPTION("Device node registration for cec drivers");
+MODULE_LICENSE("GPL");
diff --git a/include/media/cec.h b/include/media/cec.h
new file mode 100644
index 0000000..6b494b2
--- /dev/null
+++ b/include/media/cec.h
@@ -0,0 +1,161 @@
+#ifndef _CEC_DEVNODE_H
+#define _CEC_DEVNODE_H
+
+#include <linux/poll.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/kthread.h>
+#include <linux/cec-funcs.h>
+#include <media/rc-core.h>
+
+#define cec_phys_addr_exp(pa) \
+ ((pa) >> 12), ((pa) >> 8) & 0xf, ((pa) >> 4) & 0xf, (pa) & 0xf
+
+/*
+ * Flag to mark the cec_devnode struct as registered. Drivers must not touch
+ * this flag directly, it will be set and cleared by cec_devnode_register and
+ * cec_devnode_unregister.
+ */
+#define CEC_FLAG_REGISTERED 0
+
+/**
+ * struct cec_devnode - cec device node
+ * @parent: parent device
+ * @minor: device node minor number
+ * @flags: flags, combination of the CEC_FLAG_* constants
+ *
+ * This structure represents a cec-related device node.
+ *
+ * The @parent is a physical device. It must be set by core or device drivers
+ * before registering the node.
+ */
+struct cec_devnode {
+ /* sysfs */
+ struct device dev; /* cec device */
+ struct cdev cdev; /* character device */
+ struct device *parent; /* device parent */
+
+ /* device info */
+ int minor;
+ unsigned long flags; /* Use bitops to access flags */
+
+ /* callbacks */
+ void (*release)(struct cec_devnode *cecdev);
+};
+
+static inline int cec_devnode_is_registered(struct cec_devnode *cecdev)
+{
+ return test_bit(CEC_FLAG_REGISTERED, &cecdev->flags);
+}
+
+struct cec_adapter;
+struct cec_data;
+
+typedef int (*cec_notify)(struct cec_adapter *adap, struct cec_data *data,
+ void *priv);
+typedef int (*cec_recv_notify)(struct cec_adapter *adap, struct cec_msg *msg);
+
+struct cec_data {
+ struct cec_msg msg;
+ cec_notify func;
+ void *priv;
+ bool blocking;
+};
+
+/* Unconfigured state */
+#define CEC_ADAP_STATE_DISABLED 0
+#define CEC_ADAP_STATE_UNCONF 1
+#define CEC_ADAP_STATE_IDLE 2
+#define CEC_ADAP_STATE_TRANSMITTING 3
+#define CEC_ADAP_STATE_WAIT 4
+#define CEC_ADAP_STATE_RECEIVED 5
+
+#define CEC_TX_QUEUE_SZ (4)
+#define CEC_RX_QUEUE_SZ (4)
+#define CEC_EV_QUEUE_SZ (40)
+
+struct cec_adapter {
+ struct module *owner;
+ const char *name;
+ struct cec_devnode devnode;
+ struct mutex lock;
+ struct rc_dev *rc;
+
+ struct cec_data tx_queue[CEC_TX_QUEUE_SZ];
+ u8 tx_qstart, tx_qcount;
+
+ struct cec_msg rx_queue[CEC_RX_QUEUE_SZ];
+ u8 rx_qstart, rx_qcount;
+
+ struct cec_event ev_queue[CEC_EV_QUEUE_SZ];
+ u8 ev_qstart, ev_qcount;
+
+ cec_recv_notify recv_notifier;
+ struct task_struct *kthread_config;
+
+ struct task_struct *kthread;
+ wait_queue_head_t kthread_waitq;
+ wait_queue_head_t waitq;
+
+ /* Can be set by the main driver: */
+ u32 capabilities;
+ u8 available_log_addrs;
+ u8 pwr_state;
+ u16 phys_addr;
+ u32 vendor_id;
+ u8 cec_version;
+
+ bool is_sink;
+ u8 state;
+ u8 num_log_addrs;
+ u8 flags[CEC_MAX_LOG_ADDRS];
+ u8 prim_device[CEC_MAX_LOG_ADDRS];
+ u8 log_addr_type[CEC_MAX_LOG_ADDRS];
+ u8 log_addr[CEC_MAX_LOG_ADDRS];
+ u8 all_device_types[CEC_MAX_LOG_ADDRS];
+ u8 features[CEC_MAX_LOG_ADDRS][12];
+ u16 phys_addrs[15];
+ char osd_name[15];
+ u8 passthrough;
+ u32 sequence;
+
+ char input_name[32];
+ char input_phys[32];
+ char input_drv[32];
+
+ int (*adap_enable)(struct cec_adapter *adap, bool enable);
+ int (*adap_log_addr)(struct cec_adapter *adap, u8 logical_addr);
+ int (*adap_transmit)(struct cec_adapter *adap, struct cec_msg *msg);
+ void (*adap_transmit_timed_out)(struct cec_adapter *adap);
+
+ void (*claimed_log_addr)(struct cec_adapter *adap, u8 idx);
+ int (*received)(struct cec_adapter *adap, struct cec_msg *msg);
+
+ /* High-level callbacks */
+ u8 (*source_cdc_hpd)(struct cec_adapter *adap, u8 cdc_hpd_state);
+ int (*sink_initiate_arc)(struct cec_adapter *adap);
+ int (*sink_terminate_arc)(struct cec_adapter *adap);
+ int (*source_arc_initiated)(struct cec_adapter *adap);
+ int (*source_arc_terminated)(struct cec_adapter *adap);
+};
+
+#define to_cec_adapter(node) container_of(node, struct cec_adapter, devnode)
+
+int cec_create_adapter(struct cec_adapter *adap, const char *name, u32 caps,
+ bool is_sink, struct module *owner, struct device *parent);
+void cec_delete_adapter(struct cec_adapter *adap);
+int cec_transmit_msg(struct cec_adapter *adap, struct cec_data *data,
+ bool block);
+int cec_receive_msg(struct cec_adapter *adap, struct cec_msg *msg, bool block);
+void cec_post_event(struct cec_adapter *adap, u32 event, u32 sequence);
+int cec_claim_log_addrs(struct cec_adapter *adap,
+ struct cec_log_addrs *log_addrs, bool block);
+int cec_enable(struct cec_adapter *adap, bool enable);
+u8 cec_sink_cdc_hpd(struct cec_adapter *adap, u8 input_port, u8 cdc_hpd_state);
+
+/* Called by the adapter */
+void cec_transmit_done(struct cec_adapter *adap, u32 status);
+void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg);
+
+#endif /* _CEC_DEVNODE_H */
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index 1a0006a..e2cb20e 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -81,6 +81,8 @@ header-y += capi.h
header-y += cciss_defs.h
header-y += cciss_ioctl.h
header-y += cdrom.h
+header-y += cec.h
+header-y += cec-funcs.h
header-y += cgroupstats.h
header-y += chio.h
header-y += cm4000_cs.h
diff --git a/include/uapi/linux/cec-funcs.h b/include/uapi/linux/cec-funcs.h
new file mode 100644
index 0000000..2a9aac4
--- /dev/null
+++ b/include/uapi/linux/cec-funcs.h
@@ -0,0 +1,1516 @@
+#ifndef _CEC_FUNCS_H
+#define _CEC_FUNCS_H
+
+#include <linux/cec.h>
+
+/* One Touch Play Feature */
+static inline void cec_msg_active_source(struct cec_msg *msg, __u16 phys_addr)
+{
+ msg->len = 4;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_ACTIVE_SOURCE;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+}
+
+static inline void cec_ops_active_source(const struct cec_msg *msg,
+ __u16 *phys_addr)
+{
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+}
+
+static inline void cec_msg_image_view_on(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_IMAGE_VIEW_ON;
+}
+
+static inline void cec_msg_text_view_on(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_TEXT_VIEW_ON;
+}
+
+
+/* Routing Control Feature */
+static inline void cec_msg_inactive_source(struct cec_msg *msg,
+ __u16 phys_addr)
+{
+ msg->len = 4;
+ msg->msg[1] = CEC_MSG_INACTIVE_SOURCE;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+}
+
+static inline void cec_ops_inactive_source(const struct cec_msg *msg,
+ __u16 *phys_addr)
+{
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+}
+
+static inline void cec_msg_request_active_source(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_REQUEST_ACTIVE_SOURCE;
+ msg->reply = reply ? CEC_MSG_ACTIVE_SOURCE : 0;
+}
+
+static inline void cec_msg_routing_information(struct cec_msg *msg,
+ __u16 phys_addr)
+{
+ msg->len = 4;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_ROUTING_INFORMATION;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+}
+
+static inline void cec_ops_routing_information(const struct cec_msg *msg,
+ __u16 *phys_addr)
+{
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+}
+
+static inline void cec_msg_routing_change(struct cec_msg *msg,
+ bool reply,
+ __u16 orig_phys_addr,
+ __u16 new_phys_addr)
+{
+ msg->len = 6;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_ROUTING_CHANGE;
+ msg->msg[2] = orig_phys_addr >> 8;
+ msg->msg[3] = orig_phys_addr & 0xff;
+ msg->msg[4] = new_phys_addr >> 8;
+ msg->msg[5] = new_phys_addr & 0xff;
+ msg->reply = reply ? CEC_MSG_ROUTING_INFORMATION : 0;
+}
+
+static inline void cec_ops_routing_change(const struct cec_msg *msg,
+ __u16 *orig_phys_addr,
+ __u16 *new_phys_addr)
+{
+ *orig_phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+ *new_phys_addr = (msg->msg[4] << 8) | msg->msg[5];
+}
+
+static inline void cec_msg_set_stream_path(struct cec_msg *msg, __u16 phys_addr)
+{
+ msg->len = 4;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_SET_STREAM_PATH;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+}
+
+static inline void cec_ops_set_stream_path(const struct cec_msg *msg,
+ __u16 *phys_addr)
+{
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+}
+
+
+/* Standby Feature */
+static inline void cec_msg_standby(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_STANDBY;
+}
+
+
+/* One Touch Record Feature */
+static inline void cec_msg_record_off(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_RECORD_OFF;
+}
+
+struct cec_op_arib_data {
+ __u16 transport_id;
+ __u16 service_id;
+ __u16 orig_network_id;
+};
+
+struct cec_op_atsc_data {
+ __u16 transport_id;
+ __u16 program_number;
+};
+
+struct cec_op_dvb_data {
+ __u16 transport_id;
+ __u16 service_id;
+ __u16 orig_network_id;
+};
+
+struct cec_op_channel_data {
+ __u8 channel_number_fmt;
+ __u16 major;
+ __u16 minor;
+};
+
+struct cec_op_digital_service_id {
+ __u8 service_id_method;
+ __u8 dig_bcast_system;
+ union {
+ struct cec_op_arib_data arib;
+ struct cec_op_atsc_data atsc;
+ struct cec_op_dvb_data dvb;
+ struct cec_op_channel_data channel;
+ };
+};
+
+struct cec_op_record_src {
+ __u8 type;
+ union {
+ struct cec_op_digital_service_id digital;
+ struct {
+ __u8 ana_bcast_type;
+ __u16 ana_freq;
+ __u8 bcast_system;
+ } analog;
+ struct {
+ __u8 plug;
+ } ext_plug;
+ struct {
+ __u16 phys_addr;
+ } ext_phys_addr;
+ };
+};
+
+static inline void cec_set_digital_service_id(__u8 *msg,
+ const struct cec_op_digital_service_id *digital)
+{
+ *msg++ = (digital->service_id_method << 7) | digital->dig_bcast_system;
+ if (digital->service_id_method == CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL) {
+ *msg++ = (digital->channel.channel_number_fmt << 2) |
+ (digital->channel.major >> 8);
+ *msg++ = digital->channel.major && 0xff;
+ *msg++ = digital->channel.minor >> 8;
+ *msg++ = digital->channel.minor & 0xff;
+ *msg++ = 0;
+ *msg++ = 0;
+ return;
+ }
+ switch (digital->dig_bcast_system) {
+ case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_GEN:
+ case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_CABLE:
+ case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_SAT:
+ case CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_T:
+ *msg++ = digital->atsc.transport_id >> 8;
+ *msg++ = digital->atsc.transport_id & 0xff;
+ *msg++ = digital->atsc.program_number >> 8;
+ *msg++ = digital->atsc.program_number & 0xff;
+ *msg++ = 0;
+ *msg++ = 0;
+ break;
+ default:
+ *msg++ = digital->dvb.transport_id >> 8;
+ *msg++ = digital->dvb.transport_id & 0xff;
+ *msg++ = digital->dvb.service_id >> 8;
+ *msg++ = digital->dvb.service_id & 0xff;
+ *msg++ = digital->dvb.orig_network_id >> 8;
+ *msg++ = digital->dvb.orig_network_id & 0xff;
+ break;
+ }
+}
+
+static inline void cec_get_digital_service_id(const __u8 *msg,
+ struct cec_op_digital_service_id *digital)
+{
+ digital->service_id_method = msg[0] >> 7;
+ digital->dig_bcast_system = msg[0] & 0x7f;
+ if (digital->service_id_method == CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL) {
+ digital->channel.channel_number_fmt = msg[1] >> 2;
+ digital->channel.major = ((msg[1] & 3) << 6) | msg[2];
+ digital->channel.minor = (msg[3] << 8) | msg[4];
+ return;
+ }
+ digital->dvb.transport_id = (msg[1] << 8) | msg[2];
+ digital->dvb.service_id = (msg[3] << 8) | msg[4];
+ digital->dvb.orig_network_id = (msg[5] << 8) | msg[6];
+}
+
+static inline void cec_msg_record_on_own(struct cec_msg *msg)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_RECORD_ON;
+ msg->msg[2] = CEC_OP_RECORD_SRC_OWN;
+}
+
+static inline void cec_msg_record_on_digital(struct cec_msg *msg,
+ const struct cec_op_digital_service_id *digital)
+{
+ msg->len = 10;
+ msg->msg[1] = CEC_MSG_RECORD_ON;
+ msg->msg[2] = CEC_OP_RECORD_SRC_DIGITAL;
+ cec_set_digital_service_id(msg->msg + 3, digital);
+}
+
+static inline void cec_msg_record_on_analog(struct cec_msg *msg,
+ __u8 ana_bcast_type,
+ __u16 ana_freq,
+ __u8 bcast_system)
+{
+ msg->len = 7;
+ msg->msg[1] = CEC_MSG_RECORD_ON;
+ msg->msg[2] = CEC_OP_RECORD_SRC_ANALOG;
+ msg->msg[3] = ana_bcast_type;
+ msg->msg[4] = ana_freq >> 8;
+ msg->msg[5] = ana_freq & 0xff;
+ msg->msg[6] = bcast_system;
+}
+
+static inline void cec_msg_record_on_plug(struct cec_msg *msg,
+ __u8 plug)
+{
+ msg->len = 4;
+ msg->msg[1] = CEC_MSG_RECORD_ON;
+ msg->msg[2] = CEC_OP_RECORD_SRC_EXT_PLUG;
+ msg->msg[3] = plug;
+}
+
+static inline void cec_msg_record_on_phys_addr(struct cec_msg *msg,
+ __u16 phys_addr)
+{
+ msg->len = 5;
+ msg->msg[1] = CEC_MSG_RECORD_ON;
+ msg->msg[2] = CEC_OP_RECORD_SRC_EXT_PHYS_ADDR;
+ msg->msg[3] = phys_addr >> 8;
+ msg->msg[4] = phys_addr & 0xff;
+}
+
+static inline void cec_msg_record_on(struct cec_msg *msg,
+ const struct cec_op_record_src *rec_src)
+{
+ switch (rec_src->type) {
+ case CEC_OP_RECORD_SRC_OWN:
+ cec_msg_record_on_own(msg);
+ break;
+ case CEC_OP_RECORD_SRC_DIGITAL:
+ cec_msg_record_on_digital(msg, &rec_src->digital);
+ break;
+ case CEC_OP_RECORD_SRC_ANALOG:
+ cec_msg_record_on_analog(msg,
+ rec_src->analog.ana_bcast_type,
+ rec_src->analog.ana_freq,
+ rec_src->analog.bcast_system);
+ break;
+ case CEC_OP_RECORD_SRC_EXT_PLUG:
+ cec_msg_record_on_plug(msg, rec_src->ext_plug.plug);
+ break;
+ case CEC_OP_RECORD_SRC_EXT_PHYS_ADDR:
+ cec_msg_record_on_phys_addr(msg,
+ rec_src->ext_phys_addr.phys_addr);
+ break;
+ }
+}
+
+static inline void cec_ops_record_on(const struct cec_msg *msg,
+ struct cec_op_record_src *rec_src)
+{
+ rec_src->type = msg->msg[2];
+ switch (rec_src->type) {
+ case CEC_OP_RECORD_SRC_OWN:
+ break;
+ case CEC_OP_RECORD_SRC_DIGITAL:
+ cec_get_digital_service_id(msg->msg + 3, &rec_src->digital);
+ break;
+ case CEC_OP_RECORD_SRC_ANALOG:
+ rec_src->analog.ana_bcast_type = msg->msg[3];
+ rec_src->analog.ana_freq =
+ (msg->msg[4] << 8) | msg->msg[5];
+ rec_src->analog.bcast_system = msg->msg[6];
+ break;
+ case CEC_OP_RECORD_SRC_EXT_PLUG:
+ rec_src->ext_plug.plug = msg->msg[3];
+ break;
+ case CEC_OP_RECORD_SRC_EXT_PHYS_ADDR:
+ rec_src->ext_phys_addr.phys_addr =
+ (msg->msg[3] << 8) | msg->msg[4];
+ break;
+ }
+}
+
+static inline void cec_msg_record_status(struct cec_msg *msg, __u8 rec_status)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_RECORD_STATUS;
+ msg->msg[2] = rec_status;
+}
+
+static inline void cec_ops_record_status(const struct cec_msg *msg,
+ __u8 *rec_status)
+{
+ *rec_status = msg->msg[2];
+}
+
+static inline void cec_msg_record_tv_screen(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_RECORD_TV_SCREEN;
+ msg->reply = reply ? CEC_MSG_RECORD_ON : 0;
+}
+
+
+/* Timer Programming Feature */
+static inline void cec_msg_timer_status(struct cec_msg *msg,
+ __u8 timer_overlap_warning,
+ __u8 media_info,
+ __u8 prog_info,
+ __u8 prog_error,
+ __u8 duration_hr,
+ __u8 duration_min)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_TIMER_STATUS;
+ msg->msg[2] = (timer_overlap_warning << 7) |
+ (media_info << 5) |
+ (prog_info ? 0x10 : 0) |
+ (prog_info ? prog_info : prog_error);
+ if (prog_info == CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE ||
+ prog_info == CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE ||
+ prog_error == CEC_OP_PROG_ERROR_DUPLICATE) {
+ msg->len += 2;
+ msg->msg[3] = ((duration_hr / 10) << 4) | (duration_hr % 10);
+ msg->msg[4] = ((duration_min / 10) << 4) | (duration_min % 10);
+ }
+}
+
+static inline void cec_ops_timer_status(struct cec_msg *msg,
+ __u8 *timer_overlap_warning,
+ __u8 *media_info,
+ __u8 *prog_info,
+ __u8 *prog_error,
+ __u8 *duration_hr,
+ __u8 *duration_min)
+{
+ *timer_overlap_warning = msg->msg[2] >> 7;
+ *media_info = (msg->msg[2] >> 5) & 3;
+ if (msg->msg[2] & 0x10) {
+ *prog_info = msg->msg[2] & 0xf;
+ *prog_error = 0;
+ } else {
+ *prog_info = 0;
+ *prog_error = msg->msg[2] & 0xf;
+ }
+ if (*prog_info == CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE ||
+ *prog_info == CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE ||
+ *prog_error == CEC_OP_PROG_ERROR_DUPLICATE) {
+ *duration_hr = (msg->msg[3] >> 4) * 10 + (msg->msg[3] & 0xf);
+ *duration_min = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf);
+ } else {
+ *duration_hr = *duration_min = 0;
+ }
+}
+
+static inline void cec_msg_timer_cleared_status(struct cec_msg *msg,
+ __u8 timer_cleared_status)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_TIMER_CLEARED_STATUS;
+ msg->msg[2] = timer_cleared_status;
+}
+
+static inline void cec_ops_timer_cleared_status(struct cec_msg *msg,
+ __u8 *timer_cleared_status)
+{
+ *timer_cleared_status = msg->msg[2];
+}
+
+static inline void cec_msg_clear_analogue_timer(struct cec_msg *msg,
+ bool reply,
+ __u8 day,
+ __u8 month,
+ __u8 start_hr,
+ __u8 start_min,
+ __u8 duration_hr,
+ __u8 duration_min,
+ __u8 recording_seq,
+ __u8 ana_bcast_type,
+ __u16 ana_freq,
+ __u8 bcast_system)
+{
+ msg->len = 13;
+ msg->msg[1] = CEC_MSG_CLEAR_ANALOGUE_TIMER;
+ msg->msg[2] = day;
+ msg->msg[3] = month;
+ /* Hours and minutes are in BCD format */
+ msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10);
+ msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10);
+ msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10);
+ msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10);
+ msg->msg[8] = recording_seq;
+ msg->msg[9] = ana_bcast_type;
+ msg->msg[10] = ana_freq >> 8;
+ msg->msg[11] = ana_freq & 0xff;
+ msg->msg[12] = bcast_system;
+ msg->reply = reply ? CEC_MSG_TIMER_CLEARED_STATUS : 0;
+}
+
+static inline void cec_ops_clear_analogue_timer(struct cec_msg *msg,
+ __u8 *day,
+ __u8 *month,
+ __u8 *start_hr,
+ __u8 *start_min,
+ __u8 *duration_hr,
+ __u8 *duration_min,
+ __u8 *recording_seq,
+ __u8 *ana_bcast_type,
+ __u16 *ana_freq,
+ __u8 *bcast_system)
+{
+ *day = msg->msg[2];
+ *month = msg->msg[3];
+ /* Hours and minutes are in BCD format */
+ *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf);
+ *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf);
+ *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf);
+ *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf);
+ *recording_seq = msg->msg[8];
+ *ana_bcast_type = msg->msg[9];
+ *ana_freq = (msg->msg[10] << 8) | msg->msg[11];
+ *bcast_system = msg->msg[12];
+}
+
+static inline void cec_msg_clear_digital_timer(struct cec_msg *msg,
+ bool reply,
+ __u8 day,
+ __u8 month,
+ __u8 start_hr,
+ __u8 start_min,
+ __u8 duration_hr,
+ __u8 duration_min,
+ __u8 recording_seq,
+ const struct cec_op_digital_service_id *digital)
+{
+ msg->len = 16;
+ msg->reply = reply ? CEC_MSG_TIMER_CLEARED_STATUS : 0;
+ msg->msg[1] = CEC_MSG_CLEAR_DIGITAL_TIMER;
+ msg->msg[2] = day;
+ msg->msg[3] = month;
+ /* Hours and minutes are in BCD format */
+ msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10);
+ msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10);
+ msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10);
+ msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10);
+ msg->msg[8] = recording_seq;
+ cec_set_digital_service_id(msg->msg + 9, digital);
+}
+
+static inline void cec_ops_clear_digital_timer(struct cec_msg *msg,
+ __u8 *day,
+ __u8 *month,
+ __u8 *start_hr,
+ __u8 *start_min,
+ __u8 *duration_hr,
+ __u8 *duration_min,
+ __u8 *recording_seq,
+ struct cec_op_digital_service_id *digital)
+{
+ *day = msg->msg[2];
+ *month = msg->msg[3];
+ /* Hours and minutes are in BCD format */
+ *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf);
+ *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf);
+ *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf);
+ *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf);
+ *recording_seq = msg->msg[8];
+ cec_get_digital_service_id(msg->msg + 9, digital);
+}
+
+static inline void cec_msg_clear_ext_timer(struct cec_msg *msg,
+ bool reply,
+ __u8 day,
+ __u8 month,
+ __u8 start_hr,
+ __u8 start_min,
+ __u8 duration_hr,
+ __u8 duration_min,
+ __u8 recording_seq,
+ __u8 ext_src_spec,
+ __u8 plug,
+ __u16 phys_addr)
+{
+ msg->len = 13;
+ msg->msg[1] = CEC_MSG_CLEAR_EXT_TIMER;
+ msg->msg[2] = day;
+ msg->msg[3] = month;
+ /* Hours and minutes are in BCD format */
+ msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10);
+ msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10);
+ msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10);
+ msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10);
+ msg->msg[8] = recording_seq;
+ msg->msg[9] = ext_src_spec;
+ msg->msg[10] = plug;
+ msg->msg[11] = phys_addr >> 8;
+ msg->msg[12] = phys_addr & 0xff;
+ msg->reply = reply ? CEC_MSG_TIMER_CLEARED_STATUS : 0;
+}
+
+static inline void cec_ops_clear_ext_timer(struct cec_msg *msg,
+ __u8 *day,
+ __u8 *month,
+ __u8 *start_hr,
+ __u8 *start_min,
+ __u8 *duration_hr,
+ __u8 *duration_min,
+ __u8 *recording_seq,
+ __u8 *ext_src_spec,
+ __u8 *plug,
+ __u16 *phys_addr)
+{
+ *day = msg->msg[2];
+ *month = msg->msg[3];
+ /* Hours and minutes are in BCD format */
+ *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf);
+ *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf);
+ *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf);
+ *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf);
+ *recording_seq = msg->msg[8];
+ *ext_src_spec = msg->msg[9];
+ *plug = msg->msg[10];
+ *phys_addr = (msg->msg[11] << 8) | msg->msg[12];
+}
+
+static inline void cec_msg_set_analogue_timer(struct cec_msg *msg,
+ bool reply,
+ __u8 day,
+ __u8 month,
+ __u8 start_hr,
+ __u8 start_min,
+ __u8 duration_hr,
+ __u8 duration_min,
+ __u8 recording_seq,
+ __u8 ana_bcast_type,
+ __u16 ana_freq,
+ __u8 bcast_system)
+{
+ msg->len = 13;
+ msg->msg[1] = CEC_MSG_SET_ANALOGUE_TIMER;
+ msg->msg[2] = day;
+ msg->msg[3] = month;
+ /* Hours and minutes are in BCD format */
+ msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10);
+ msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10);
+ msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10);
+ msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10);
+ msg->msg[8] = recording_seq;
+ msg->msg[9] = ana_bcast_type;
+ msg->msg[10] = ana_freq >> 8;
+ msg->msg[11] = ana_freq & 0xff;
+ msg->msg[12] = bcast_system;
+ msg->reply = reply ? CEC_MSG_TIMER_STATUS : 0;
+}
+
+static inline void cec_ops_set_analogue_timer(struct cec_msg *msg,
+ __u8 *day,
+ __u8 *month,
+ __u8 *start_hr,
+ __u8 *start_min,
+ __u8 *duration_hr,
+ __u8 *duration_min,
+ __u8 *recording_seq,
+ __u8 *ana_bcast_type,
+ __u16 *ana_freq,
+ __u8 *bcast_system)
+{
+ *day = msg->msg[2];
+ *month = msg->msg[3];
+ /* Hours and minutes are in BCD format */
+ *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf);
+ *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf);
+ *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf);
+ *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf);
+ *recording_seq = msg->msg[8];
+ *ana_bcast_type = msg->msg[9];
+ *ana_freq = (msg->msg[10] << 8) | msg->msg[11];
+ *bcast_system = msg->msg[12];
+}
+
+static inline void cec_msg_set_digital_timer(struct cec_msg *msg,
+ bool reply,
+ __u8 day,
+ __u8 month,
+ __u8 start_hr,
+ __u8 start_min,
+ __u8 duration_hr,
+ __u8 duration_min,
+ __u8 recording_seq,
+ const struct cec_op_digital_service_id *digital)
+{
+ msg->len = 16;
+ msg->reply = reply ? CEC_MSG_TIMER_STATUS : 0;
+ msg->msg[1] = CEC_MSG_SET_DIGITAL_TIMER;
+ msg->msg[2] = day;
+ msg->msg[3] = month;
+ /* Hours and minutes are in BCD format */
+ msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10);
+ msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10);
+ msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10);
+ msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10);
+ msg->msg[8] = recording_seq;
+ cec_set_digital_service_id(msg->msg + 9, digital);
+}
+
+static inline void cec_ops_set_digital_timer(struct cec_msg *msg,
+ __u8 *day,
+ __u8 *month,
+ __u8 *start_hr,
+ __u8 *start_min,
+ __u8 *duration_hr,
+ __u8 *duration_min,
+ __u8 *recording_seq,
+ struct cec_op_digital_service_id *digital)
+{
+ *day = msg->msg[2];
+ *month = msg->msg[3];
+ /* Hours and minutes are in BCD format */
+ *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf);
+ *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf);
+ *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf);
+ *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf);
+ *recording_seq = msg->msg[8];
+ cec_get_digital_service_id(msg->msg + 9, digital);
+}
+
+static inline void cec_msg_set_ext_timer(struct cec_msg *msg,
+ bool reply,
+ __u8 day,
+ __u8 month,
+ __u8 start_hr,
+ __u8 start_min,
+ __u8 duration_hr,
+ __u8 duration_min,
+ __u8 recording_seq,
+ __u8 ext_src_spec,
+ __u8 plug,
+ __u16 phys_addr)
+{
+ msg->len = 13;
+ msg->msg[1] = CEC_MSG_SET_EXT_TIMER;
+ msg->msg[2] = day;
+ msg->msg[3] = month;
+ /* Hours and minutes are in BCD format */
+ msg->msg[4] = ((start_hr / 10) << 4) | (start_hr % 10);
+ msg->msg[5] = ((start_min / 10) << 4) | (start_min % 10);
+ msg->msg[6] = ((duration_hr / 10) << 4) | (duration_hr % 10);
+ msg->msg[7] = ((duration_min / 10) << 4) | (duration_min % 10);
+ msg->msg[8] = recording_seq;
+ msg->msg[9] = ext_src_spec;
+ msg->msg[10] = plug;
+ msg->msg[11] = phys_addr >> 8;
+ msg->msg[12] = phys_addr & 0xff;
+ msg->reply = reply ? CEC_MSG_TIMER_STATUS : 0;
+}
+
+static inline void cec_ops_set_ext_timer(struct cec_msg *msg,
+ __u8 *day,
+ __u8 *month,
+ __u8 *start_hr,
+ __u8 *start_min,
+ __u8 *duration_hr,
+ __u8 *duration_min,
+ __u8 *recording_seq,
+ __u8 *ext_src_spec,
+ __u8 *plug,
+ __u16 *phys_addr)
+{
+ *day = msg->msg[2];
+ *month = msg->msg[3];
+ /* Hours and minutes are in BCD format */
+ *start_hr = (msg->msg[4] >> 4) * 10 + (msg->msg[4] & 0xf);
+ *start_min = (msg->msg[5] >> 4) * 10 + (msg->msg[5] & 0xf);
+ *duration_hr = (msg->msg[6] >> 4) * 10 + (msg->msg[6] & 0xf);
+ *duration_min = (msg->msg[7] >> 4) * 10 + (msg->msg[7] & 0xf);
+ *recording_seq = msg->msg[8];
+ *ext_src_spec = msg->msg[9];
+ *plug = msg->msg[10];
+ *phys_addr = (msg->msg[11] << 8) | msg->msg[12];
+}
+
+static inline void cec_msg_set_timer_program_title(struct cec_msg *msg,
+ const char *prog_title)
+{
+ unsigned len = strlen(prog_title);
+
+ if (len > 14)
+ len = 14;
+ msg->len = 2 + len;
+ msg->msg[1] = CEC_MSG_SET_TIMER_PROGRAM_TITLE;
+ memcpy(msg->msg + 2, prog_title, len);
+}
+
+static inline void cec_ops_set_timer_program_title(const struct cec_msg *msg,
+ char *prog_title)
+{
+ unsigned len = msg->len - 2;
+
+ if (len > 14)
+ len = 14;
+ memcpy(prog_title, msg->msg + 2, len);
+ prog_title[len] = '\0';
+}
+
+/* System Information Feature */
+static inline void cec_msg_cec_version(struct cec_msg *msg, __u8 cec_version)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_CEC_VERSION;
+ msg->msg[2] = cec_version;
+}
+
+static inline void cec_ops_cec_version(const struct cec_msg *msg,
+ __u8 *cec_version)
+{
+ *cec_version = msg->msg[2];
+}
+
+static inline void cec_msg_get_cec_version(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GET_CEC_VERSION;
+ msg->reply = reply ? CEC_MSG_CEC_VERSION : 0;
+}
+
+static inline void cec_msg_report_physical_addr(struct cec_msg *msg,
+ __u16 phys_addr, __u8 prim_devtype)
+{
+ msg->len = 5;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_REPORT_PHYSICAL_ADDR;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+ msg->msg[4] = prim_devtype;
+}
+
+static inline void cec_ops_report_physical_addr(const struct cec_msg *msg,
+ __u16 *phys_addr, __u8 *prim_devtype)
+{
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+ *prim_devtype = msg->msg[4];
+}
+
+static inline void cec_msg_give_physical_addr(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GIVE_PHYSICAL_ADDR;
+ msg->reply = reply ? CEC_MSG_REPORT_PHYSICAL_ADDR : 0;
+}
+
+static inline void cec_msg_set_menu_language(struct cec_msg *msg,
+ const char *language)
+{
+ msg->len = 5;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_SET_MENU_LANGUAGE;
+ memcpy(msg->msg + 2, language, 3);
+}
+
+static inline void cec_ops_set_menu_language(struct cec_msg *msg,
+ char *language)
+{
+ memcpy(language, msg->msg + 2, 3);
+}
+
+static inline void cec_msg_get_menu_language(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GET_MENU_LANGUAGE;
+ msg->reply = reply ? CEC_MSG_SET_MENU_LANGUAGE : 0;
+}
+
+/*
+ * Assumes a single RC Profile byte and a single Device Features byte,
+ * i.e. no extended features are supported by this helper function.
+ */
+static inline void cec_msg_report_features(struct cec_msg *msg,
+ __u8 cec_version, __u8 all_device_types,
+ __u8 rc_profile, __u8 dev_features)
+{
+ msg->len = 6;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_REPORT_FEATURES;
+ msg->msg[2] = cec_version;
+ msg->msg[3] = all_device_types;
+ msg->msg[4] = rc_profile;
+ msg->msg[5] = dev_features;
+}
+
+static inline void cec_ops_report_features(const struct cec_msg *msg,
+ __u8 *cec_version, __u8 *all_device_types,
+ const __u8 **rc_profile, const __u8 **dev_features)
+{
+ const __u8 *p = &msg->msg[4];
+
+ *cec_version = msg->msg[2];
+ *all_device_types = msg->msg[3];
+ *rc_profile = p;
+ while (p < &msg->msg[14] && (*p & CEC_OP_FEAT_EXT))
+ p++;
+ if (!(*p & CEC_OP_FEAT_EXT)) {
+ *dev_features = p + 1;
+ while (p < &msg->msg[15] && (*p & CEC_OP_FEAT_EXT))
+ p++;
+ }
+ if (*p & CEC_OP_FEAT_EXT)
+ *rc_profile = *dev_features = NULL;
+}
+
+static inline void cec_msg_give_features(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GIVE_FEATURES;
+ msg->reply = reply ? CEC_MSG_REPORT_FEATURES : 0;
+}
+
+/* Deck Control Feature */
+static inline void cec_msg_deck_control(struct cec_msg *msg,
+ __u8 deck_control_mode)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_DECK_CONTROL;
+ msg->msg[2] = deck_control_mode;
+}
+
+static inline void cec_ops_deck_control(struct cec_msg *msg,
+ __u8 *deck_control_mode)
+{
+ *deck_control_mode = msg->msg[2];
+}
+
+static inline void cec_msg_deck_status(struct cec_msg *msg,
+ __u8 deck_info)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_DECK_STATUS;
+ msg->msg[2] = deck_info;
+}
+
+static inline void cec_ops_deck_status(struct cec_msg *msg,
+ __u8 *deck_info)
+{
+ *deck_info = msg->msg[2];
+}
+
+static inline void cec_msg_give_deck_status(struct cec_msg *msg,
+ bool reply,
+ __u8 status_req)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_GIVE_DECK_STATUS;
+ msg->msg[2] = status_req;
+ msg->reply = reply ? CEC_MSG_DECK_STATUS : 0;
+}
+
+static inline void cec_ops_give_deck_status(struct cec_msg *msg,
+ __u8 *status_req)
+{
+ *status_req = msg->msg[2];
+}
+
+static inline void cec_msg_play(struct cec_msg *msg,
+ __u8 play_mode)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_PLAY;
+ msg->msg[2] = play_mode;
+}
+
+static inline void cec_ops_play(struct cec_msg *msg,
+ __u8 *play_mode)
+{
+ *play_mode = msg->msg[2];
+}
+
+
+/* Tuner Control Feature */
+struct cec_op_tuner_device_info {
+ __u8 rec_flag;
+ __u8 tuner_display_info;
+ bool is_analog;
+ union {
+ struct cec_op_digital_service_id digital;
+ struct {
+ __u8 ana_bcast_type;
+ __u16 ana_freq;
+ __u8 bcast_system;
+ } analog;
+ };
+};
+
+static inline void cec_msg_tuner_device_status_analog(struct cec_msg *msg,
+ __u8 rec_flag,
+ __u8 tuner_display_info,
+ __u8 ana_bcast_type,
+ __u16 ana_freq,
+ __u8 bcast_system)
+{
+ msg->len = 7;
+ msg->msg[1] = CEC_MSG_TUNER_DEVICE_STATUS;
+ msg->msg[2] = (rec_flag << 7) | tuner_display_info;
+ msg->msg[3] = ana_bcast_type;
+ msg->msg[4] = ana_freq >> 8;
+ msg->msg[5] = ana_freq & 0xff;
+ msg->msg[6] = bcast_system;
+}
+
+static inline void cec_msg_tuner_device_status_digital(struct cec_msg *msg,
+ __u8 rec_flag, __u8 tuner_display_info,
+ const struct cec_op_digital_service_id *digital)
+{
+ msg->len = 10;
+ msg->msg[1] = CEC_MSG_TUNER_DEVICE_STATUS;
+ msg->msg[2] = (rec_flag << 7) | tuner_display_info;
+ cec_set_digital_service_id(msg->msg + 3, digital);
+}
+
+static inline void cec_msg_tuner_device_status(struct cec_msg *msg,
+ const struct cec_op_tuner_device_info *tuner_dev_info)
+{
+ if (tuner_dev_info->is_analog)
+ cec_msg_tuner_device_status_analog(msg,
+ tuner_dev_info->rec_flag,
+ tuner_dev_info->tuner_display_info,
+ tuner_dev_info->analog.ana_bcast_type,
+ tuner_dev_info->analog.ana_freq,
+ tuner_dev_info->analog.bcast_system);
+ else
+ cec_msg_tuner_device_status_digital(msg,
+ tuner_dev_info->rec_flag,
+ tuner_dev_info->tuner_display_info,
+ &tuner_dev_info->digital);
+}
+
+static inline void cec_ops_tuner_device_status(struct cec_msg *msg,
+ struct cec_op_tuner_device_info *tuner_dev_info)
+{
+ tuner_dev_info->is_analog = msg->len < 10;
+ tuner_dev_info->rec_flag = msg->msg[2] >> 7;
+ tuner_dev_info->tuner_display_info = msg->msg[2] & 0x7f;
+ if (tuner_dev_info->is_analog) {
+ tuner_dev_info->analog.ana_bcast_type = msg->msg[3];
+ tuner_dev_info->analog.ana_freq = (msg->msg[4] << 8) | msg->msg[5];
+ tuner_dev_info->analog.bcast_system = msg->msg[6];
+ return;
+ }
+ cec_get_digital_service_id(msg->msg + 3, &tuner_dev_info->digital);
+}
+
+static inline void cec_msg_give_tuner_device_status(struct cec_msg *msg,
+ bool reply,
+ __u8 status_req)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_GIVE_TUNER_DEVICE_STATUS;
+ msg->msg[2] = status_req;
+ msg->reply = reply ? CEC_MSG_TUNER_DEVICE_STATUS : 0;
+}
+
+static inline void cec_ops_give_tuner_device_status(struct cec_msg *msg,
+ __u8 *status_req)
+{
+ *status_req = msg->msg[2];
+}
+
+static inline void cec_msg_select_analogue_service(struct cec_msg *msg,
+ __u8 ana_bcast_type,
+ __u16 ana_freq,
+ __u8 bcast_system)
+{
+ msg->len = 6;
+ msg->msg[1] = CEC_MSG_SELECT_ANALOGUE_SERVICE;
+ msg->msg[2] = ana_bcast_type;
+ msg->msg[3] = ana_freq >> 8;
+ msg->msg[4] = ana_freq & 0xff;
+ msg->msg[5] = bcast_system;
+}
+
+static inline void cec_ops_select_analogue_service(struct cec_msg *msg,
+ __u8 *ana_bcast_type,
+ __u16 *ana_freq,
+ __u8 *bcast_system)
+{
+ *ana_bcast_type = msg->msg[2];
+ *ana_freq = (msg->msg[3] << 8) | msg->msg[4];
+ *bcast_system = msg->msg[5];
+}
+
+static inline void cec_msg_select_digital_service(struct cec_msg *msg,
+ const struct cec_op_digital_service_id *digital)
+{
+ msg->len = 9;
+ msg->msg[1] = CEC_MSG_SELECT_DIGITAL_SERVICE;
+ cec_set_digital_service_id(msg->msg + 2, digital);
+}
+
+static inline void cec_ops_select_digital_service(struct cec_msg *msg,
+ struct cec_op_digital_service_id *digital)
+{
+ cec_get_digital_service_id(msg->msg + 2, digital);
+}
+
+static inline void cec_msg_tuner_step_decrement(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_TUNER_STEP_DECREMENT;
+}
+
+static inline void cec_msg_tuner_step_increment(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_TUNER_STEP_INCREMENT;
+}
+
+
+/* Vendor Specific Commands Feature */
+static inline void cec_msg_device_vendor_id(struct cec_msg *msg, __u32 vendor_id)
+{
+ msg->len = 5;
+ msg->msg[0] |= 0xf; /* broadcast */
+ msg->msg[1] = CEC_MSG_DEVICE_VENDOR_ID;
+ msg->msg[2] = vendor_id >> 16;
+ msg->msg[3] = (vendor_id >> 8) & 0xff;
+ msg->msg[4] = vendor_id & 0xff;
+}
+
+static inline void cec_ops_device_vendor_id(const struct cec_msg *msg,
+ __u32 *vendor_id)
+{
+ *vendor_id = (msg->msg[2] << 16) | (msg->msg[3] << 8) | msg->msg[4];
+}
+
+static inline void cec_msg_give_device_vendor_id(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GIVE_DEVICE_VENDOR_ID;
+ msg->reply = reply ? CEC_MSG_DEVICE_VENDOR_ID : 0;
+}
+
+static inline void cec_msg_vendor_remote_button_up(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_VENDOR_REMOTE_BUTTON_UP;
+}
+
+
+/* OSD Display Feature */
+static inline void cec_msg_set_osd_string(struct cec_msg *msg,
+ __u8 disp_ctl,
+ const char *osd)
+{
+ unsigned len = strlen(osd);
+
+ if (len > 13)
+ len = 13;
+ msg->len = 3 + len;
+ msg->msg[1] = CEC_MSG_SET_OSD_STRING;
+ msg->msg[2] = disp_ctl;
+ memcpy(msg->msg + 3, osd, len);
+}
+
+static inline void cec_ops_set_osd_string(const struct cec_msg *msg,
+ __u8 *disp_ctl,
+ char *osd)
+{
+ unsigned len = msg->len - 3;
+
+ *disp_ctl = msg->msg[2];
+ if (len > 13)
+ len = 13;
+ memcpy(osd, msg->msg + 3, len);
+ osd[len] = '\0';
+}
+
+
+/* Device OSD Transfer Feature */
+static inline void cec_msg_set_osd_name(struct cec_msg *msg, const char *name)
+{
+ unsigned len = strlen(name);
+
+ if (len > 14)
+ len = 14;
+ msg->len = 2 + len;
+ msg->msg[1] = CEC_MSG_SET_OSD_NAME;
+ memcpy(msg->msg + 2, name, len);
+}
+
+static inline void cec_ops_set_osd_name(const struct cec_msg *msg,
+ char *name)
+{
+ unsigned len = msg->len - 2;
+
+ if (len > 14)
+ len = 14;
+ memcpy(name, msg->msg + 2, len);
+ name[len] = '\0';
+}
+
+static inline void cec_msg_give_osd_name(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GIVE_OSD_NAME;
+ msg->reply = reply ? CEC_MSG_SET_OSD_NAME : 0;
+}
+
+
+/* Device Menu Control Feature */
+static inline void cec_msg_menu_status(struct cec_msg *msg,
+ __u8 menu_state)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_MENU_STATUS;
+ msg->msg[2] = menu_state;
+}
+
+static inline void cec_ops_menu_status(struct cec_msg *msg,
+ __u8 *menu_state)
+{
+ *menu_state = msg->msg[2];
+}
+
+static inline void cec_msg_menu_request(struct cec_msg *msg,
+ bool reply,
+ __u8 menu_req)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_MENU_REQUEST;
+ msg->msg[2] = menu_req;
+ msg->reply = reply ? CEC_MSG_MENU_STATUS : 0;
+}
+
+static inline void cec_ops_menu_request(struct cec_msg *msg,
+ __u8 *menu_req)
+{
+ *menu_req = msg->msg[2];
+}
+
+static inline void cec_msg_user_control_pressed(struct cec_msg *msg,
+ __u8 ui_cmd)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_USER_CONTROL_PRESSED;
+ msg->msg[2] = ui_cmd;
+}
+
+static inline void cec_ops_user_control_pressed(struct cec_msg *msg,
+ __u8 *ui_cmd)
+{
+ *ui_cmd = msg->msg[2];
+}
+
+static inline void cec_msg_user_control_released(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_USER_CONTROL_RELEASED;
+}
+
+/* Remote Control Passthrough Feature */
+
+/* Power Status Feature */
+static inline void cec_msg_report_power_status(struct cec_msg *msg,
+ __u8 pwr_state)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_REPORT_POWER_STATUS;
+ msg->msg[2] = pwr_state;
+}
+
+static inline void cec_ops_report_power_status(const struct cec_msg *msg,
+ __u8 *pwr_state)
+{
+ *pwr_state = msg->msg[2];
+}
+
+static inline void cec_msg_give_device_power_status(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GIVE_DEVICE_POWER_STATUS;
+ msg->reply = reply ? CEC_MSG_REPORT_POWER_STATUS : 0;
+}
+
+/* General Protocol Messages */
+static inline void cec_msg_feature_abort(struct cec_msg *msg,
+ __u8 abort_msg, __u8 reason)
+{
+ msg->len = 4;
+ msg->msg[1] = CEC_MSG_FEATURE_ABORT;
+ msg->msg[2] = abort_msg;
+ msg->msg[3] = reason;
+}
+
+static inline void cec_ops_feature_abort(const struct cec_msg *msg,
+ __u8 *abort_msg, __u8 *reason)
+{
+ *abort_msg = msg->msg[2];
+ *reason = msg->msg[3];
+}
+
+/* This changes the current message into an abort message */
+static inline void cec_msg_reply_abort(struct cec_msg *msg, __u8 reason)
+{
+ cec_msg_set_reply_to(msg, msg);
+ msg->len = 4;
+ msg->msg[2] = msg->msg[1];
+ msg->msg[3] = reason;
+ msg->msg[1] = CEC_MSG_FEATURE_ABORT;
+}
+
+static inline void cec_msg_abort(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_ABORT;
+}
+
+
+/* System Audio Control Feature */
+static inline void cec_msg_report_audio_status(struct cec_msg *msg,
+ __u8 aud_mute_status,
+ __u8 aud_vol_status)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_REPORT_AUDIO_STATUS;
+ msg->msg[2] = (aud_mute_status << 7) | (aud_vol_status & 0x7f);
+}
+
+static inline void cec_ops_report_audio_status(const struct cec_msg *msg,
+ __u8 *aud_mute_status,
+ __u8 *aud_vol_status)
+{
+ *aud_mute_status = msg->msg[2] >> 7;
+ *aud_vol_status = msg->msg[2] & 0x7f;
+}
+
+static inline void cec_msg_give_audio_status(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GIVE_AUDIO_STATUS;
+ msg->reply = reply ? CEC_MSG_REPORT_AUDIO_STATUS : 0;
+}
+
+static inline void cec_msg_set_system_audio_mode(struct cec_msg *msg,
+ __u8 sys_aud_status)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_SET_SYSTEM_AUDIO_MODE;
+ msg->msg[2] = sys_aud_status;
+}
+
+static inline void cec_ops_set_system_audio_mode(const struct cec_msg *msg,
+ __u8 *sys_aud_status)
+{
+ *sys_aud_status = msg->msg[2];
+}
+
+static inline void cec_msg_system_audio_mode_request(struct cec_msg *msg,
+ bool reply,
+ __u16 phys_addr)
+{
+ msg->len = phys_addr == 0xffff ? 2 : 4;
+ msg->msg[1] = CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+ msg->reply = reply ? CEC_MSG_SET_SYSTEM_AUDIO_MODE : 0;
+
+}
+
+static inline void cec_ops_system_audio_mode_request(const struct cec_msg *msg,
+ __u16 *phys_addr)
+{
+ if (msg->len < 4)
+ *phys_addr = 0xffff;
+ else
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+}
+
+static inline void cec_msg_system_audio_mode_status(struct cec_msg *msg,
+ __u8 sys_aud_status)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_SYSTEM_AUDIO_MODE_STATUS;
+ msg->msg[2] = sys_aud_status;
+}
+
+static inline void cec_ops_system_audio_mode_status(const struct cec_msg *msg,
+ __u8 *sys_aud_status)
+{
+ *sys_aud_status = msg->msg[2];
+}
+
+static inline void cec_msg_give_system_audio_mode_status(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS;
+ msg->reply = reply ? CEC_MSG_SYSTEM_AUDIO_MODE_STATUS : 0;
+}
+
+static inline void cec_msg_report_short_audio_descriptor(struct cec_msg *msg,
+ __u8 num_descriptors,
+ const __u32 *descriptors)
+{
+ unsigned i;
+
+ msg->len = 2 + num_descriptors * 3;
+ msg->msg[1] = CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR;
+ for (i = 0; i < num_descriptors; i++) {
+ msg->msg[2 + i * 3] = (descriptors[i] >> 16) & 0xff;
+ msg->msg[3 + i * 3] = (descriptors[i] >> 8) & 0xff;
+ msg->msg[4 + i * 3] = descriptors[i] & 0xff;
+ }
+}
+
+static inline void cec_ops_report_short_audio_descriptor(const struct cec_msg *msg,
+ __u8 *num_descriptors,
+ __u32 *descriptors)
+{
+ unsigned i;
+
+ *num_descriptors = (msg->len - 2) / 3;
+ for (i = 0; i < *num_descriptors; i++)
+ descriptors[i] = (msg->msg[2 + i * 3] << 16) |
+ (msg->msg[3 + i * 3] << 8) |
+ msg->msg[4 + i * 3];
+}
+
+static inline void cec_msg_request_short_audio_descriptor(struct cec_msg *msg,
+ __u8 audio_format_id,
+ __u8 audio_format_code)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR;
+ msg->msg[2] = (audio_format_id << 6) | (audio_format_code & 0x3f);
+}
+
+static inline void cec_ops_request_short_audio_descriptor(const struct cec_msg *msg,
+ __u8 *audio_format_id,
+ __u8 *audio_format_code)
+{
+ *audio_format_id = msg->msg[2] >> 6;
+ *audio_format_code = msg->msg[2] & 0x3f;
+}
+
+
+/* Audio Rate Control Feature */
+static inline void cec_msg_set_audio_rate(struct cec_msg *msg,
+ __u8 audio_rate)
+{
+ msg->len = 3;
+ msg->msg[1] = CEC_MSG_SET_AUDIO_RATE;
+ msg->msg[2] = audio_rate;
+}
+
+static inline void cec_ops_set_audio_rate(const struct cec_msg *msg,
+ __u8 *audio_rate)
+{
+ *audio_rate = msg->msg[2];
+}
+
+
+/* Audio Return Channel Control Feature */
+static inline void cec_msg_report_arc_initiated(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_REPORT_ARC_INITIATED;
+}
+
+static inline void cec_msg_initiate_arc(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_INITIATE_ARC;
+ msg->reply = reply ? CEC_MSG_REPORT_ARC_INITIATED : 0;
+}
+
+static inline void cec_msg_request_arc_initiation(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_REQUEST_ARC_INITIATION;
+ msg->reply = reply ? CEC_MSG_INITIATE_ARC : 0;
+}
+
+static inline void cec_msg_report_arc_terminated(struct cec_msg *msg)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_REPORT_ARC_TERMINATED;
+}
+
+static inline void cec_msg_terminate_arc(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_TERMINATE_ARC;
+ msg->reply = reply ? CEC_MSG_REPORT_ARC_TERMINATED : 0;
+}
+
+static inline void cec_msg_request_arc_termination(struct cec_msg *msg,
+ bool reply)
+{
+ msg->len = 2;
+ msg->msg[1] = CEC_MSG_REQUEST_ARC_TERMINATION;
+ msg->reply = reply ? CEC_MSG_TERMINATE_ARC : 0;
+}
+
+
+/* Dynamic Audio Lipsync Feature */
+/* Only for CEC 2.0 and up */
+static inline void cec_msg_report_current_latency(struct cec_msg *msg,
+ __u16 phys_addr,
+ __u8 video_latency,
+ __u8 low_latency_mode,
+ __u8 audio_out_compensated,
+ __u8 audio_out_delay)
+{
+ msg->len = 7;
+ msg->msg[1] = CEC_MSG_REPORT_CURRENT_LATENCY;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+ msg->msg[4] = video_latency;
+ msg->msg[5] = (low_latency_mode << 2) | audio_out_compensated;
+ msg->msg[6] = audio_out_delay;
+}
+
+static inline void cec_ops_report_current_latency(const struct cec_msg *msg,
+ __u16 *phys_addr,
+ __u8 *video_latency,
+ __u8 *low_latency_mode,
+ __u8 *audio_out_compensated,
+ __u8 *audio_out_delay)
+{
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+ *video_latency = msg->msg[4];
+ *low_latency_mode = (msg->msg[5] >> 2) & 1;
+ *audio_out_compensated = msg->msg[5] & 3;
+ *audio_out_delay = msg->msg[6];
+}
+
+static inline void cec_msg_request_current_latency(struct cec_msg *msg,
+ bool reply,
+ __u16 phys_addr)
+{
+ msg->len = 4;
+ msg->msg[1] = CEC_MSG_REQUEST_CURRENT_LATENCY;
+ msg->msg[2] = phys_addr >> 8;
+ msg->msg[3] = phys_addr & 0xff;
+ msg->reply = reply ? CEC_MSG_REPORT_CURRENT_LATENCY : 0;
+}
+
+static inline void cec_ops_request_current_latency(const struct cec_msg *msg,
+ __u16 *phys_addr)
+{
+ *phys_addr = (msg->msg[2] << 8) | msg->msg[3];
+}
+
+#endif
diff --git a/include/uapi/linux/cec.h b/include/uapi/linux/cec.h
new file mode 100644
index 0000000..052c6ee
--- /dev/null
+++ b/include/uapi/linux/cec.h
@@ -0,0 +1,709 @@
+#ifndef _CEC_H
+#define _CEC_H
+
+#include <linux/types.h>
+
+struct cec_msg {
+ __u64 ts;
+ __u32 len;
+ __u32 status;
+ /*
+ * timeout (in ms) is used to timeout CEC_RECEIVE.
+ * Set to 0 if you want to wait forever.
+ */
+ __u32 timeout;
+ /*
+ * The framework assigns a sequence number to messages that are sent.
+ * This can be used to track replies to previously sent messages.
+ */
+ __u32 sequence;
+ __u8 msg[16];
+ /*
+ * If non-zero, then wait for a reply with this opcode.
+ * If there was an error when sending the msg or FeatureAbort
+ * was returned, then reply is set to 0.
+ * If reply is non-zero upon return, then len/msg are set to
+ * the received message.
+ * If reply is zero upon return and status has the
+ * CEC_TX_STATUS_FEATURE_ABORT bit set, then len/msg are set to the
+ * received feature abort message.
+ * If reply is zero upon return and status has the
+ * CEC_TX_STATUS_REPLY_TIMEOUT
+ * bit set, then no reply was seen at all.
+ * This field is ignored with CEC_RECEIVE.
+ * If reply is non-zero for CEC_TRANSMIT and the message is a broadcast,
+ * then -EINVAL is returned.
+ * if reply is non-zero, then timeout is set to 1000 (the required
+ * maximum response time).
+ */
+ __u8 reply;
+ __u8 reserved[35];
+};
+
+static inline __u8 cec_msg_initiator(const struct cec_msg *msg)
+{
+ return msg->msg[0] >> 4;
+}
+
+static inline __u8 cec_msg_destination(const struct cec_msg *msg)
+{
+ return msg->msg[0] & 0xf;
+}
+
+static inline bool cec_msg_is_broadcast(const struct cec_msg *msg)
+{
+ return (msg->msg[0] & 0xf) == 0xf;
+}
+
+static inline void cec_msg_init(struct cec_msg *msg,
+ __u8 initiator, __u8 destination)
+{
+ memset(msg, 0, sizeof(*msg));
+ msg->msg[0] = (initiator << 4) | destination;
+}
+
+/*
+ * Set the msg destination to the orig initiator and the msg initiator to the
+ * orig destination. Note that msg and orig may be the same pointer, in which
+ * case the change is done in place.
+ */
+static inline void cec_msg_set_reply_to(struct cec_msg *msg, struct cec_msg *orig)
+{
+ /* The destination becomes the initiator and vice versa */
+ msg->msg[0] = (cec_msg_destination(orig) << 4) | cec_msg_initiator(orig);
+}
+
+/* cec status field */
+#define CEC_TX_STATUS_OK (0)
+#define CEC_TX_STATUS_ARB_LOST (1 << 0)
+#define CEC_TX_STATUS_RETRY_TIMEOUT (1 << 1)
+#define CEC_TX_STATUS_FEATURE_ABORT (1 << 2)
+#define CEC_TX_STATUS_REPLY_TIMEOUT (1 << 3)
+#define CEC_RX_STATUS_READY (0)
+
+#define CEC_LOG_ADDR_INVALID 0xff
+
+/* The maximum number of logical addresses one device can be assigned to.
+ * The CEC 2.0 spec allows for only 2 logical addresses at the moment. The
+ * Analog Devices CEC hardware supports 3. So let's go wild and go for 4. */
+#define CEC_MAX_LOG_ADDRS 4
+
+/* The logical address types that the CEC device wants to claim */
+#define CEC_LOG_ADDR_TYPE_TV 0
+#define CEC_LOG_ADDR_TYPE_RECORD 1
+#define CEC_LOG_ADDR_TYPE_TUNER 2
+#define CEC_LOG_ADDR_TYPE_PLAYBACK 3
+#define CEC_LOG_ADDR_TYPE_AUDIOSYSTEM 4
+#define CEC_LOG_ADDR_TYPE_SPECIFIC 5
+#define CEC_LOG_ADDR_TYPE_UNREGISTERED 6
+/* Switches should use UNREGISTERED.
+ * Processors should use SPECIFIC. */
+
+/*
+ * Use this if there is no vendor ID (CEC_G_VENDOR_ID) or if the vendor ID
+ * should be disabled (CEC_S_VENDOR_ID)
+ */
+#define CEC_VENDOR_ID_NONE 0xffffffff
+
+struct cec_event {
+ __u64 ts;
+ __u32 event;
+ __u32 sequence;
+ __u8 reserved[8];
+};
+
+/* The CEC state */
+#define CEC_STATE_DISABLED 0
+#define CEC_STATE_ENABLED 1
+
+/* The passthrough mode state */
+#define CEC_PASSTHROUGH_DISABLED 0
+#define CEC_PASSTHROUGH_ENABLED 1
+
+/* Userspace has to configure the adapter state (enable/disable) */
+#define CEC_CAP_STATE (1 << 0)
+/* Userspace has to configure the physical address */
+#define CEC_CAP_PHYS_ADDR (1 << 1)
+/* Userspace has to configure the logical addresses */
+#define CEC_CAP_LOG_ADDRS (1 << 2)
+/* Userspace can transmit messages */
+#define CEC_CAP_TRANSMIT (1 << 3)
+/* Userspace can receive messages */
+#define CEC_CAP_RECEIVE (1 << 4)
+/* Userspace has to configure the vendor id */
+#define CEC_CAP_VENDOR_ID (1 << 5)
+/* The hardware has the possibility to work in the passthrough */
+#define CEC_CAP_PASSTHROUGH (1 << 6)
+/* Supports remote control */
+#define CEC_CAP_RC (1 << 7)
+/* Supports ARC */
+#define CEC_CAP_ARC (1 << 8)
+/* Supports CDC */
+#define CEC_CAP_CDC (1 << 9)
+
+struct cec_caps {
+ __u32 available_log_addrs;
+ __u32 capabilities;
+ __u8 reserved[40];
+};
+
+#define CEC_LOG_ADDRS_FL_HANDLE_MSGS (1 << 0)
+
+struct cec_log_addrs {
+ __u8 cec_version;
+ __u8 num_log_addrs;
+ __u8 primary_device_type[CEC_MAX_LOG_ADDRS];
+ __u8 log_addr_type[CEC_MAX_LOG_ADDRS];
+ __u8 log_addr[CEC_MAX_LOG_ADDRS];
+ __u8 flags[CEC_MAX_LOG_ADDRS];
+ char osd_name[15];
+
+ /* CEC 2.0 */
+ __u8 all_device_types[CEC_MAX_LOG_ADDRS];
+ __u8 features[CEC_MAX_LOG_ADDRS][12];
+
+ __u8 reserved[63];
+};
+
+/* Commands */
+
+/* One Touch Play Feature */
+#define CEC_MSG_ACTIVE_SOURCE 0x82
+#define CEC_MSG_IMAGE_VIEW_ON 0x04
+#define CEC_MSG_TEXT_VIEW_ON 0x0d
+
+
+/* Routing Control Feature */
+
+/*
+ * Has also:
+ * CEC_MSG_ACTIVE_SOURCE
+ */
+
+#define CEC_MSG_INACTIVE_SOURCE 0x9d
+#define CEC_MSG_REQUEST_ACTIVE_SOURCE 0x85
+#define CEC_MSG_ROUTING_CHANGE 0x80
+#define CEC_MSG_ROUTING_INFORMATION 0x81
+#define CEC_MSG_SET_STREAM_PATH 0x86
+
+
+/* Standby Feature */
+#define CEC_MSG_STANDBY 0x36
+
+
+/* One Touch Record Feature */
+#define CEC_MSG_RECORD_OFF 0x0b
+#define CEC_MSG_RECORD_ON 0x09
+/* Record Source Type Operand (rec_src_type) */
+#define CEC_OP_RECORD_SRC_OWN 0x01
+#define CEC_OP_RECORD_SRC_DIGITAL 0x02
+#define CEC_OP_RECORD_SRC_ANALOG 0x03
+#define CEC_OP_RECORD_SRC_EXT_PLUG 0x04
+#define CEC_OP_RECORD_SRC_EXT_PHYS_ADDR 0x05
+/* Service Identification Method Operand (service_id_method) */
+#define CEC_OP_SERVICE_ID_METHOD_BY_DIG_ID 0x00
+#define CEC_OP_SERVICE_ID_METHOD_BY_CHANNEL 0x01
+/* Digital Service Broadcast System Operand (dig_bcast_system) */
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_GEN 0x00
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_GEN 0x01
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_GEN 0x02
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_BS 0x08
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_CS 0x09
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ARIB_T 0x0a
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_CABLE 0x10
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_SAT 0x11
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_ATSC_T 0x12
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_C 0x18
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_S 0x19
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_S2 0x1a
+#define CEC_OP_DIG_SERVICE_BCAST_SYSTEM_DVB_T 0x1b
+/* Analogue Broadcast Type Operand (ana_bcast_type) */
+#define CEC_OP_ANA_BCAST_TYPE_CABLE 0x00
+#define CEC_OP_ANA_BCAST_TYPE_SATELLITE 0x01
+#define CEC_OP_ANA_BCAST_TYPE_TERRESTRIAL 0x02
+/* Broadcast System Operand (bcast_system) */
+#define CEC_OP_BCAST_SYSTEM_PAL_BG 0x00
+#define CEC_OP_BCAST_SYSTEM_SECAM_LQ 0x01 /* SECAM L' */
+#define CEC_OP_BCAST_SYSTEM_PAL_M 0x02
+#define CEC_OP_BCAST_SYSTEM_NTSC_M 0x03
+#define CEC_OP_BCAST_SYSTEM_PAL_I 0x04
+#define CEC_OP_BCAST_SYSTEM_SECAM_DK 0x05
+#define CEC_OP_BCAST_SYSTEM_SECAM_BG 0x06
+#define CEC_OP_BCAST_SYSTEM_SECAM_L 0x07
+#define CEC_OP_BCAST_SYSTEM_PAL_DK 0x08
+#define CEC_OP_BCAST_SYSTEM_OTHER 0x1f
+/* Channel Number Format Operand (channel_number_fmt) */
+#define CEC_OP_CHANNEL_NUMBER_FMT_1_PART 0x01
+#define CEC_OP_CHANNEL_NUMBER_FMT_2_PART 0x02
+
+#define CEC_MSG_RECORD_STATUS 0x0a
+/* Record Status Operand (rec_status) */
+#define CEC_OP_RECORD_STATUS_CUR_SRC 0x01
+#define CEC_OP_RECORD_STATUS_DIG_SERVICE 0x02
+#define CEC_OP_RECORD_STATUS_ANA_SERVICE 0x03
+#define CEC_OP_RECORD_STATUS_EXT_INPUT 0x04
+#define CEC_OP_RECORD_STATUS_NO_DIG_SERVICE 0x05
+#define CEC_OP_RECORD_STATUS_NO_ANA_SERVICE 0x06
+#define CEC_OP_RECORD_STATUS_NO_SERVICE 0x07
+#define CEC_OP_RECORD_STATUS_INVALID_EXT_PLUG 0x09
+#define CEC_OP_RECORD_STATUS_INVALID_EXT_PHYS_ADDR 0x0a
+#define CEC_OP_RECORD_STATUS_UNSUP_CA 0x0b
+#define CEC_OP_RECORD_STATUS_NO_CA_ENTITLEMENTS 0x0c
+#define CEC_OP_RECORD_STATUS_CANT_COPY_SRC 0x0d
+#define CEC_OP_RECORD_STATUS_NO_MORE_COPIES 0x0e
+#define CEC_OP_RECORD_STATUS_NO_MEDIA 0x10
+#define CEC_OP_RECORD_STATUS_PLAYING 0x11
+#define CEC_OP_RECORD_STATUS_ALREADY_RECORDING 0x12
+#define CEC_OP_RECORD_STATUS_MEDIA_PROT 0x13
+#define CEC_OP_RECORD_STATUS_NO_SIGNAL 0x14
+#define CEC_OP_RECORD_STATUS_MEDIA_PROBLEM 0x15
+#define CEC_OP_RECORD_STATUS_NO_SPACE 0x16
+#define CEC_OP_RECORD_STATUS_PARENTAL_LOCK 0x17
+#define CEC_OP_RECORD_STATUS_TERMINATED_OK 0x1a
+#define CEC_OP_RECORD_STATUS_ALREADY_TERM 0x1b
+#define CEC_OP_RECORD_STATUS_OTHER 0x1f
+
+#define CEC_MSG_RECORD_TV_SCREEN 0x0f
+
+
+/* Timer Programming Feature */
+#define CEC_MSG_CLEAR_ANALOGUE_TIMER 0x33
+/* Recording Sequence Operand (recording_seq) */
+#define CEC_OP_REC_SEQ_SUNDAY 0x01
+#define CEC_OP_REC_SEQ_MONDAY 0x02
+#define CEC_OP_REC_SEQ_TUESDAY 0x04
+#define CEC_OP_REC_SEQ_WEDNESDAY 0x08
+#define CEC_OP_REC_SEQ_THURSDAY 0x10
+#define CEC_OP_REC_SEQ_FRIDAY 0x20
+#define CEC_OP_REC_SEQ_SATERDAY 0x40
+#define CEC_OP_REC_SEQ_ONCE_ONLY 0x00
+
+#define CEC_MSG_CLEAR_DIGITAL_TIMER 0x99
+
+#define CEC_MSG_CLEAR_EXT_TIMER 0xa1
+/* External Source Specifier Operand (ext_src_spec) */
+#define CEC_OP_EXT_SRC_PLUG 0x04
+#define CEC_OP_EXT_SRC_PHYS_ADDR 0x05
+
+#define CEC_MSG_SET_ANALOGUE_TIMER 0x34
+#define CEC_MSG_SET_DIGITAL_TIMER 0x97
+#define CEC_MSG_SET_EXT_TIMER 0xa2
+
+#define CEC_MSG_SET_TIMER_PROGRAM_TITLE 0x67
+#define CEC_MSG_TIMER_CLEARED_STATUS 0x43
+/* Timer Cleared Status Data Operand (timer_cleared_status) */
+#define CEC_OP_TIMER_CLR_STAT_RECORDING 0x00
+#define CEC_OP_TIMER_CLR_STAT_NO_MATCHING 0x01
+#define CEC_OP_TIMER_CLR_STAT_NO_INFO 0x02
+#define CEC_OP_TIMER_CLR_STAT_CLEARED 0x80
+
+#define CEC_MSG_TIMER_STATUS 0x35
+/* Timer Overlap Warning Operand (timer_overlap_warning) */
+#define CEC_OP_TIMER_OVERLAP_WARNING_NO_OVERLAP 0x00
+#define CEC_OP_TIMER_OVERLAP_WARNING_OVERLAP 0x01
+/* Media Info Operand (media_info) */
+#define CEC_OP_MEDIA_INFO_UNPROT_MEDIA 0x00
+#define CEC_OP_MEDIA_INFO_PROT_MEDIA 0x01
+#define CEC_OP_MEDIA_INFO_NO_MEDIA 0x02
+/* Programmed Indicator Operand (prog_indicator) */
+#define CEC_OP_PROG_IND_NOT_PROGRAMMED 0x00
+#define CEC_OP_PROG_IND_PROGRAMMED 0x01
+/* Programmed Info Operand (prog_info) */
+#define CEC_OP_PROG_INFO_ENOUGH_SPACE 0x08
+#define CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE 0x09
+#define CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE 0x0b
+#define CEC_OP_PROG_INFO_NONE_AVAILABLE 0x0a
+/* Not Programmed Error Info Operand (prog_error) */
+#define CEC_OP_PROG_ERROR_NO_FREE_TIMER 0x01
+#define CEC_OP_PROG_ERROR_DATE_OUT_OF_RANGE 0x02
+#define CEC_OP_PROG_ERROR_REC_SEQ_ERROR 0x03
+#define CEC_OP_PROG_ERROR_INV_EXT_PLUG 0x04
+#define CEC_OP_PROG_ERROR_INV_EXT_PHYS_ADDR 0x05
+#define CEC_OP_PROG_ERROR_CA_UNSUPP 0x06
+#define CEC_OP_PROG_ERROR_INSUF_CA_ENTITLEMENTS 0x07
+#define CEC_OP_PROG_ERROR_RESOLUTION_UNSUPP 0x08
+#define CEC_OP_PROG_ERROR_PARENTAL_LOCK 0x09
+#define CEC_OP_PROG_ERROR_CLOCK_FAILURE 0x0a
+#define CEC_OP_PROG_ERROR_DUPLICATE 0x0e
+
+
+/* System Information Feature */
+#define CEC_MSG_CEC_VERSION 0x9e
+/* CEC Version Operand (cec_version) */
+#define CEC_OP_CEC_VERSION_1_3A 4
+#define CEC_OP_CEC_VERSION_1_4 5
+#define CEC_OP_CEC_VERSION_2_0 6
+
+#define CEC_MSG_GET_CEC_VERSION 0x9f
+#define CEC_MSG_GIVE_PHYSICAL_ADDR 0x83
+#define CEC_MSG_GET_MENU_LANGUAGE 0x91
+#define CEC_MSG_REPORT_PHYSICAL_ADDR 0x84
+/* Primary Device Type Operand (prim_devtype) */
+#define CEC_OP_PRIM_DEVTYPE_TV 0
+#define CEC_OP_PRIM_DEVTYPE_RECORD 1
+#define CEC_OP_PRIM_DEVTYPE_TUNER 3
+#define CEC_OP_PRIM_DEVTYPE_PLAYBACK 4
+#define CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM 5
+#define CEC_OP_PRIM_DEVTYPE_SWITCH 6
+#define CEC_OP_PRIM_DEVTYPE_PROCESSOR 7
+
+#define CEC_MSG_SET_MENU_LANGUAGE 0x32
+#define CEC_MSG_REPORT_FEATURES 0xa6 /* HDMI 2.0 */
+/* All Device Types Operand (all_device_types) */
+#define CEC_OP_ALL_DEVTYPE_TV 0x80
+#define CEC_OP_ALL_DEVTYPE_RECORD 0x40
+#define CEC_OP_ALL_DEVTYPE_TUNER 0x20
+#define CEC_OP_ALL_DEVTYPE_PLAYBACK 0x10
+#define CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM 0x08
+#define CEC_OP_ALL_DEVTYPE_SWITCH 0x04
+/* And if you wondering what happened to PROCESSOR devices: those should
+ * be mapped to a SWITCH. */
+
+/* Valid for RC Profile and Device Feature operands */
+#define CEC_OP_FEAT_EXT 0x80 /* Extension bit */
+/* RC Profile Operand (rc_profile) */
+#define CEC_OP_FEAT_RC_TV_PROFILE_NONE 0x00
+#define CEC_OP_FEAT_RC_TV_PROFILE_1 0x02
+#define CEC_OP_FEAT_RC_TV_PROFILE_2 0x06
+#define CEC_OP_FEAT_RC_TV_PROFILE_3 0x0a
+#define CEC_OP_FEAT_RC_TV_PROFILE_4 0x0e
+#define CEC_OP_FEAT_RC_SRC_HAS_DEV_ROOT_MENU 0x50
+#define CEC_OP_FEAT_RC_SRC_HAS_DEV_SETUP_MENU 0x48
+#define CEC_OP_FEAT_RC_SRC_HAS_CONTENTS_MENU 0x44
+#define CEC_OP_FEAT_RC_SRC_HAS_MEDIA_TOP_MENU 0x42
+#define CEC_OP_FEAT_RC_SRC_HAS_MEDIA_CONTEXT_MENU 0x41
+/* Device Feature Operand (dev_features) */
+#define CEC_OP_FEAT_DEV_HAS_RECORD_TV_SCREEN 0x40
+#define CEC_OP_FEAT_DEV_HAS_SET_OSD_STRING 0x20
+#define CEC_OP_FEAT_DEV_HAS_DECK_CONTROL 0x10
+#define CEC_OP_FEAT_DEV_HAS_SET_AUDIO_RATE 0x08
+#define CEC_OP_FEAT_DEV_SINK_HAS_ARC_TX 0x04
+#define CEC_OP_FEAT_DEV_SOURCE_HAS_ARC_RX 0x02
+
+#define CEC_MSG_GIVE_FEATURES 0xa5 /* HDMI 2.0 */
+
+
+/* Deck Control Feature */
+#define CEC_MSG_DECK_CONTROL 0x42
+/* Deck Control Mode Operand (deck_control_mode) */
+#define CEC_OP_DECK_CTL_MODE_SKIP_FWD 0x01
+#define CEC_OP_DECK_CTL_MODE_SKIP_REV 0x02
+#define CEC_OP_DECK_CTL_MODE_STOP 0x03
+#define CEC_OP_DECK_CTL_MODE_EJECT 0x04
+
+#define CEC_MSG_DECK_STATUS 0x1b
+/* Deck Info Operand (deck_info) */
+#define CEC_OP_DECK_INFO_PLAY 0x11
+#define CEC_OP_DECK_INFO_RECORD 0x12
+#define CEC_OP_DECK_INFO_PLAY_REV 0x13
+#define CEC_OP_DECK_INFO_STILL 0x14
+#define CEC_OP_DECK_INFO_SLOW 0x15
+#define CEC_OP_DECK_INFO_SLOW_REV 0x16
+#define CEC_OP_DECK_INFO_FAST_FWD 0x17
+#define CEC_OP_DECK_INFO_FAST_REV 0x18
+#define CEC_OP_DECK_INFO_NO_MEDIA 0x19
+#define CEC_OP_DECK_INFO_STOP 0x1a
+#define CEC_OP_DECK_INFO_SKIP_FWD 0x1b
+#define CEC_OP_DECK_INFO_SKIP_REV 0x1c
+#define CEC_OP_DECK_INFO_INDEX_SEARCH_FWD 0x1d
+#define CEC_OP_DECK_INFO_INDEX_SEARCH_REV 0x1e
+#define CEC_OP_DECK_INFO_OTHER 0x1f
+
+#define CEC_MSG_GIVE_DECK_STATUS 0x1a
+/* Status Request Operand (status_req) */
+#define CEC_OP_STATUS_REQ_ON 0x01
+#define CEC_OP_STATUS_REQ_OFF 0x02
+#define CEC_OP_STATUS_REQ_ONCE 0x03
+
+#define CEC_MSG_PLAY 0x41
+/* Play Mode Operand (play_mode) */
+#define CEC_OP_PLAY_MODE_PLAY_FWD 0x24
+#define CEC_OP_PLAY_MODE_PLAY_REV 0x20
+#define CEC_OP_PLAY_MODE_PLAY_STILL 0x25
+#define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MIN 0x05
+#define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MED 0x06
+#define CEC_OP_PLAY_MODE_PLAY_FAST_FWD_MAX 0x07
+#define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MIN 0x09
+#define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MED 0x0a
+#define CEC_OP_PLAY_MODE_PLAY_FAST_REV_MAX 0x0b
+#define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MIN 0x15
+#define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MED 0x16
+#define CEC_OP_PLAY_MODE_PLAY_SLOW_FWD_MAX 0x17
+#define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MIN 0x19
+#define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MED 0x1a
+#define CEC_OP_PLAY_MODE_PLAY_SLOW_REV_MAX 0x1b
+
+
+/* Tuner Control Feature */
+#define CEC_MSG_GIVE_TUNER_DEVICE_STATUS 0x08
+#define CEC_MSG_SELECT_ANALOGUE_SERVICE 0x92
+#define CEC_MSG_SELECT_DIGITAL_SERVICE 0x93
+#define CEC_MSG_TUNER_DEVICE_STATUS 0x07
+/* Recording Flag Operand (rec_flag) */
+#define CEC_OP_REC_FLAG_USED 0x00
+#define CEC_OP_REC_FLAG_NOT_USED 0x01
+/* Tuner Display Info Operand (tuner_display_info) */
+#define CEC_OP_TUNER_DISPLAY_INFO_DIGITAL 0x00
+#define CEC_OP_TUNER_DISPLAY_INFO_NONE 0x01
+#define CEC_OP_TUNER_DISPLAY_INFO_ANALOGUE 0x02
+
+#define CEC_MSG_TUNER_STEP_DECREMENT 0x06
+#define CEC_MSG_TUNER_STEP_INCREMENT 0x05
+
+
+/* Vendor Specific Commands Feature */
+
+/*
+ * Has also:
+ * CEC_MSG_CEC_VERSION
+ * CEC_MSG_GET_CEC_VERSION
+ */
+#define CEC_MSG_DEVICE_VENDOR_ID 0x87
+#define CEC_MSG_GIVE_DEVICE_VENDOR_ID 0x8c
+#define CEC_MSG_VENDOR_COMMAND 0x89
+#define CEC_MSG_VENDOR_COMMAND_WITH_ID 0xa0
+#define CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN 0x8a
+#define CEC_MSG_VENDOR_REMOTE_BUTTON_UP 0x8b
+
+
+/* OSD Display Feature */
+#define CEC_MSG_SET_OSD_STRING 0x64
+/* Display Control Operand (disp_ctl) */
+#define CEC_OP_DISP_CTL_DEFAULT 0x00
+#define CEC_OP_DISP_CTL_UNTIL_CLEARED 0x40
+#define CEC_OP_DISP_CTL_CLEAR 0x80
+
+
+/* Device OSD Transfer Feature */
+#define CEC_MSG_GIVE_OSD_NAME 0x46
+#define CEC_MSG_SET_OSD_NAME 0x47
+
+
+/* Device Menu Control Feature */
+#define CEC_MSG_MENU_REQUEST 0x8d
+/* Menu Request Type Operand (menu_req) */
+#define CEC_OP_MENU_REQUEST_ACTIVATE 0x00
+#define CEC_OP_MENU_REQUEST_DEACTIVATE 0x01
+#define CEC_OP_MENU_REQUEST_QUERY 0x02
+
+#define CEC_MSG_MENU_STATUS 0x8e
+/* Menu State Operand (menu_state) */
+#define CEC_OP_MENU_STATE_ACTIVATED 0x00
+#define CEC_OP_MENU_STATE_DEACTIVATED 0x01
+
+#define CEC_MSG_USER_CONTROL_PRESSED 0x44
+/* UI Broadcast Type Operand (ui_bcast_type) */
+#define CEC_OP_UI_BCAST_TYPE_TOGGLE_ALL 0x00
+#define CEC_OP_UI_BCAST_TYPE_TOGGLE_DIG_ANA 0x01
+#define CEC_OP_UI_BCAST_TYPE_ANALOGUE 0x10
+#define CEC_OP_UI_BCAST_TYPE_ANALOGUE_T 0x20
+#define CEC_OP_UI_BCAST_TYPE_ANALOGUE_CABLE 0x30
+#define CEC_OP_UI_BCAST_TYPE_ANALOGUE_SAT 0x40
+#define CEC_OP_UI_BCAST_TYPE_DIGITAL 0x50
+#define CEC_OP_UI_BCAST_TYPE_DIGITAL_T 0x60
+#define CEC_OP_UI_BCAST_TYPE_DIGITAL_CABLE 0x70
+#define CEC_OP_UI_BCAST_TYPE_DIGITAL_SAT 0x80
+#define CEC_OP_UI_BCAST_TYPE_DIGITAL_COM_SAT 0x90
+#define CEC_OP_UI_BCAST_TYPE_DIGITAL_COM_SAT2 0x91
+#define CEC_OP_UI_BCAST_TYPE_IP 0xa0
+/* UI Sound Presentation Control Operand (ui_snd_pres_ctl) */
+#define CEC_OP_UI_SND_PRES_CTL_DUAL_MONO 0x10
+#define CEC_OP_UI_SND_PRES_CTL_KARAOKE 0x20
+#define CEC_OP_UI_SND_PRES_CTL_DOWNMIX 0x80
+#define CEC_OP_UI_SND_PRES_CTL_REVERB 0x90
+#define CEC_OP_UI_SND_PRES_CTL_EQUALIZER 0xa0
+#define CEC_OP_UI_SND_PRES_CTL_BASS_UP 0xb1
+#define CEC_OP_UI_SND_PRES_CTL_BASS_NEUTRAL 0xb2
+#define CEC_OP_UI_SND_PRES_CTL_BASS_DOWN 0xb3
+#define CEC_OP_UI_SND_PRES_CTL_TREBLE_UP 0xc1
+#define CEC_OP_UI_SND_PRES_CTL_TREBLE_NEUTRAL 0xc2
+#define CEC_OP_UI_SND_PRES_CTL_TREBLE_DOWN 0xc3
+
+#define CEC_MSG_USER_CONTROL_RELEASED 0x45
+
+
+/* Remote Control Passthrough Feature */
+
+/*
+ * Has also:
+ * CEC_MSG_USER_CONTROL_PRESSED
+ * CEC_MSG_USER_CONTROL_RELEASED
+ */
+
+
+/* Power Status Feature */
+#define CEC_MSG_GIVE_DEVICE_POWER_STATUS 0x8f
+#define CEC_MSG_REPORT_POWER_STATUS 0x90
+/* Power Status Operand (pwr_state) */
+#define CEC_OP_POWER_STATUS_ON 0x00
+#define CEC_OP_POWER_STATUS_STANDBY 0x01
+#define CEC_OP_POWER_STATUS_TO_ON 0x02
+#define CEC_OP_POWER_STATUS_TO_STANDBY 0x03
+
+
+/* General Protocol Messages */
+#define CEC_MSG_FEATURE_ABORT 0x00
+/* Abort Reason Operand (reason) */
+#define CEC_OP_ABORT_UNRECOGNIZED_OP 0
+#define CEC_OP_ABORT_INCORRECT_MODE 1
+#define CEC_OP_ABORT_NO_SOURCE 2
+#define CEC_OP_ABORT_INVALID_OP 3
+#define CEC_OP_ABORT_REFUSED 4
+#define CEC_OP_ABORT_UNDETERMINED 5
+
+#define CEC_MSG_ABORT 0xff
+
+
+/* System Audio Control Feature */
+
+/*
+ * Has also:
+ * CEC_MSG_USER_CONTROL_PRESSED
+ * CEC_MSG_USER_CONTROL_RELEASED
+ */
+#define CEC_MSG_GIVE_AUDIO_STATUS 0x71
+#define CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS 0x7d
+#define CEC_MSG_REPORT_AUDIO_STATUS 0x7a
+/* Audio Mute Status Operand (aud_mute_status) */
+#define CEC_OP_AUD_MUTE_STATUS_OFF 0x00
+#define CEC_OP_AUD_MUTE_STATUS_ON 0x01
+
+#define CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR 0xa3
+#define CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR 0xa4
+#define CEC_MSG_SET_SYSTEM_AUDIO_MODE 0x72
+/* System Audio Status Operand (sys_aud_status) */
+#define CEC_OP_SYS_AUD_STATUS_OFF 0x00
+#define CEC_OP_SYS_AUD_STATUS_ON 0x01
+
+#define CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST 0x70
+#define CEC_MSG_SYSTEM_AUDIO_MODE_STATUS 0x7e
+/* Audio Format ID Operand (audio_format_id) */
+#define CEC_OP_AUD_FMT_ID_CEA861 0x00
+#define CEC_OP_AUD_FMT_ID_CEA861_CXT 0x01
+
+
+/* Audio Rate Control Feature */
+#define CEC_MSG_SET_AUDIO_RATE 0x9a
+/* Audio Rate Operand (audio_rate) */
+#define CEC_OP_AUD_RATE_OFF 0x00
+#define CEC_OP_AUD_RATE_WIDE_STD 0x01
+#define CEC_OP_AUD_RATE_WIDE_FAST 0x02
+#define CEC_OP_AUD_RATE_WIDE_SLOW 0x03
+#define CEC_OP_AUD_RATE_NARROW_STD 0x04
+#define CEC_OP_AUD_RATE_NARROW_FAST 0x05
+#define CEC_OP_AUD_RATE_NARROW_SLOW 0x06
+
+
+/* Audio Return Channel Control Feature */
+#define CEC_MSG_INITIATE_ARC 0xc0
+#define CEC_MSG_REPORT_ARC_INITIATED 0xc1
+#define CEC_MSG_REPORT_ARC_TERMINATED 0xc2
+#define CEC_MSG_REQUEST_ARC_INITIATION 0xc3
+#define CEC_MSG_REQUEST_ARC_TERMINATION 0xc4
+#define CEC_MSG_TERMINATE_ARC 0xc5
+
+
+/* Dynamic Audio Lipsync Feature */
+/* Only for CEC 2.0 and up */
+#define CEC_MSG_REQUEST_CURRENT_LATENCY 0xa7
+#define CEC_MSG_REPORT_CURRENT_LATENCY 0xa8
+/* Low Latency Mode Operand (low_latency_mode) */
+#define CEC_OP_LOW_LATENCY_MODE_OFF 0x00
+#define CEC_OP_LOW_LATENCY_MODE_ON 0x01
+/* Audio Output Compensated Operand (audio_out_compensated) */
+#define CEC_OP_AUD_OUT_COMPENSATED_NA 0x00
+#define CEC_OP_AUD_OUT_COMPENSATED_DELAY 0x01
+#define CEC_OP_AUD_OUT_COMPENSATED_NO_DELAY 0x02
+#define CEC_OP_AUD_OUT_COMPENSATED_PARTIAL_DELAY 0x03
+
+
+/* Capability Discovery and Control Feature */
+#define CEC_MSG_CDC_MESSAGE 0xf8
+/* Ethernet-over-HDMI: nobody ever does this... */
+#define CEC_MSG_CDC_HEC_INQUIRE_STATE 0x00
+#define CEC_MSG_CDC_HEC_REPORT_STATE 0x01
+#define CEC_MSG_CDC_HEC_SET_STATE_ADJACENT 0x02
+#define CEC_MSG_CDC_HEC_SET_STATE 0x03
+#define CEC_MSG_CDC_HEC_REQUEST_DEACTIVATION 0x04
+#define CEC_MSG_CDC_HEC_NOTIFY_ALIVE 0x05
+#define CEC_MSG_CDC_HEC_DISCOVER 0x06
+/* Hotplug Detect messages */
+#define CEC_MSG_CDC_HPD_SET_STATE 0x10
+/* CDC HPD State Operand */
+#define CEC_OP_HPD_STATE_CP_EDID_DISABLE 0x00
+#define CEC_OP_HPD_STATE_CP_EDID_ENABLE 0x01
+#define CEC_OP_HPD_STATE_CP_EDID_DISABLE_ENABLE 0x02
+#define CEC_OP_HPD_STATE_EDID_DISABLE 0x03
+#define CEC_OP_HPD_STATE_EDID_ENABLE 0x04
+#define CEC_OP_HPD_STATE_EDID_DISABLE_ENABLE 0x05
+#define CEC_MSG_CDC_HPD_REPORT_STATE 0x11
+/* CDC HPD Error Code Operand */
+#define CEC_OP_HPD_ERROR_NONE 0x00
+#define CEC_OP_HPD_ERROR_INITIATOR_NOT_CAPABLE 0x01
+#define CEC_OP_HPD_ERROR_INITIATOR_WRONG_STATE 0x02
+#define CEC_OP_HPD_ERROR_OTHER 0x03
+#define CEC_OP_HPD_ERROR_NONE_NO_VIDEO 0x04
+
+/* Events */
+/* Event that occurs when a cable is connected */
+#define CEC_EVENT_CONNECT 1
+/* Event that occurs when all logical addresses were claimed */
+#define CEC_EVENT_READY 2
+/* Event that is sent when the cable is disconnected */
+#define CEC_EVENT_DISCONNECT 3
+/* This event is sent when a reply to a message is received */
+#define CEC_EVENT_GOT_REPLY 4
+
+/* ioctls */
+
+/* issue a CEC command */
+#define CEC_G_CAPS _IOWR('a', 0, struct cec_caps)
+#define CEC_TRANSMIT _IOWR('a', 1, struct cec_msg)
+#define CEC_RECEIVE _IOWR('a', 2, struct cec_msg)
+
+/*
+ Configure the CEC adapter. It sets the device type and which
+ logical types it will try to claim. It will return which
+ logical addresses it could actually claim.
+ An error is returned if the adapter is disabled or if there
+ is no physical address assigned.
+ */
+
+#define CEC_G_ADAP_LOG_ADDRS _IOR('a', 3, struct cec_log_addrs)
+#define CEC_S_ADAP_LOG_ADDRS _IOWR('a', 4, struct cec_log_addrs)
+
+/*
+ Enable/disable the adapter. The Set state ioctl may not
+ be available if that is handled internally.
+ */
+#define CEC_G_ADAP_STATE _IOR('a', 5, __u32)
+#define CEC_S_ADAP_STATE _IOW('a', 6, __u32)
+
+/*
+ phys_addr is either 0 (if this is the CEC root device)
+ or a valid physical address obtained from the sink's EDID
+ as read by this CEC device (if this is a source device)
+ or a physical address obtained and modified from a sink
+ EDID and used for a sink CEC device.
+ If nothing is connected, then phys_addr is 0xffff.
+ See HDMI 1.4b, section 8.7 (Physical Address).
+
+ The Set ioctl may not be available if that is handled
+ internally.
+ */
+#define CEC_G_ADAP_PHYS_ADDR _IOR('a', 7, __u16)
+#define CEC_S_ADAP_PHYS_ADDR _IOW('a', 8, __u16)
+
+#define CEC_G_EVENT _IOWR('a', 9, struct cec_event)
+/*
+ Read and set the vendor ID of the CEC adapter.
+ */
+#define CEC_G_VENDOR_ID _IOR('a', 10, __u32)
+#define CEC_S_VENDOR_ID _IOW('a', 11, __u32)
+/*
+ Enable/disable the passthrough mode
+ */
+#define CEC_G_PASSTHROUGH _IOR('a', 12, __u32)
+#define CEC_S_PASSTHROUGH _IOW('a', 13, __u32)
+
+#endif
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 08/15] cec.txt: add CEC framework documentation
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (6 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 07/15] cec: add HDMI CEC framework Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 09/15] DocBook/media: add CEC documentation Hans Verkuil
` (6 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil,
Hans Verkuil
From: Hans Verkuil <hansverk@cisco.com>
Document the new HDMI CEC framework.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
[k.debski@samsung.com: add DocBook documentation by Hans Verkuil, with
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
Documentation/cec.txt | 166 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 166 insertions(+)
create mode 100644 Documentation/cec.txt
diff --git a/Documentation/cec.txt b/Documentation/cec.txt
new file mode 100644
index 0000000..b298249
--- /dev/null
+++ b/Documentation/cec.txt
@@ -0,0 +1,166 @@
+CEC Kernel Support
+==================
+
+The CEC framework provides a unified kernel interface for use with HDMI CEC
+hardware. It is designed to handle a multiple variants of hardware. Adding to
+the flexibility of the framework it enables to set which parts of the CEC
+protocol processing is handled by the hardware, by the driver and by the
+userspace application.
+
+
+The CEC Protocol
+----------------
+
+The CEC protocol enables consumer electronic devices to communicate with each
+other through the HDMI connection. The protocol uses logical addresses in the
+communication. The logical address is strictly connected with the functionality
+provided by the device. The TV acting as the communication hub is always
+assigned address 0. The physical address is determined by the physical
+connection between devices.
+
+The protocol enables control of compatible devices with a single remote.
+Synchronous power on/standby, instant playback with changing the content source
+on the TV.
+
+The Kernel Interface
+====================
+
+CEC Adapter
+-----------
+
+#define CEC_LOG_ADDR_INVALID 0xff
+
+/* The maximum number of logical addresses one device can be assigned to.
+ * The CEC 2.0 spec allows for only 2 logical addresses at the moment. The
+ * Analog Devices CEC hardware supports 3. So let's go wild and go for 4. */
+#define CEC_MAX_LOG_ADDRS 4
+
+/* The "Primary Device Type" */
+#define CEC_OP_PRIM_DEVTYPE_TV 0
+#define CEC_OP_PRIM_DEVTYPE_RECORD 1
+#define CEC_OP_PRIM_DEVTYPE_TUNER 3
+#define CEC_OP_PRIM_DEVTYPE_PLAYBACK 4
+#define CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM 5
+#define CEC_OP_PRIM_DEVTYPE_SWITCH 6
+#define CEC_OP_PRIM_DEVTYPE_VIDEOPROC 7
+
+/* The "All Device Types" flags (CEC 2.0) */
+#define CEC_OP_ALL_DEVTYPE_TV (1 << 7)
+#define CEC_OP_ALL_DEVTYPE_RECORD (1 << 6)
+#define CEC_OP_ALL_DEVTYPE_TUNER (1 << 5)
+#define CEC_OP_ALL_DEVTYPE_PLAYBACK (1 << 4)
+#define CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM (1 << 3)
+#define CEC_OP_ALL_DEVTYPE_SWITCH (1 << 2)
+/* And if you wondering what happened to VIDEOPROC devices: those should
+ * be mapped to a SWITCH. */
+
+/* The logical address types that the CEC device wants to claim */
+#define CEC_LOG_ADDR_TYPE_TV 0
+#define CEC_LOG_ADDR_TYPE_RECORD 1
+#define CEC_LOG_ADDR_TYPE_TUNER 2
+#define CEC_LOG_ADDR_TYPE_PLAYBACK 3
+#define CEC_LOG_ADDR_TYPE_AUDIOSYSTEM 4
+#define CEC_LOG_ADDR_TYPE_SPECIFIC 5
+#define CEC_LOG_ADDR_TYPE_UNREGISTERED 6
+/* Switches should use UNREGISTERED.
+ * Video processors should use SPECIFIC. */
+
+/* The CEC version */
+#define CEC_OP_CEC_VERSION_1_3A 4
+#define CEC_OP_CEC_VERSION_1_4 5
+#define CEC_OP_CEC_VERSION_2_0 6
+
+struct cec_adapter {
+ /* internal fields removed */
+
+ u16 phys_addr;
+ u32 capabilities;
+ u8 version;
+ u8 num_log_addrs;
+ u8 prim_device[CEC_MAX_LOG_ADDRS];
+ u8 log_addr_type[CEC_MAX_LOG_ADDRS];
+ u8 log_addr[CEC_MAX_LOG_ADDRS];
+
+ int (*adap_enable)(struct cec_adapter *adap, bool enable);
+ int (*adap_log_addr)(struct cec_adapter *adap, u8 logical_addr);
+ int (*adap_transmit)(struct cec_adapter *adap, struct cec_msg *msg);
+ void (*adap_transmit_timed_out)(struct cec_adapter *adap);
+
+ void (*claimed_log_addr)(struct cec_adapter *adap, u8 idx);
+ int (*received)(struct cec_adapter *adap, struct cec_msg *msg);
+};
+
+int cec_create_adapter(struct cec_adapter *adap, u32 caps);
+void cec_delete_adapter(struct cec_adapter *adap);
+int cec_transmit_msg(struct cec_adapter *adap, struct cec_data *data, bool block);
+
+/* Called by the adapter */
+void cec_transmit_done(struct cec_adapter *adap, u32 status);
+void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg);
+
+int cec_receive_msg(struct cec_adapter *adap, struct cec_msg *msg, bool block);
+int cec_claim_log_addrs(struct cec_adapter *adap, struct cec_log_addrs *log_addrs, bool block);
+
+The device type defines are defined by the CEC standard.
+
+The cec_adapter structure represents the adapter. It has a number of
+operations that have to be implemented in the driver: adap_enable() enables
+or disables the physical adapter, adap_log_addr() tells the driver which
+logical address should be configured. This may be called multiple times
+to configure multiple logical addresses. Calling adap_enable(false) or
+adap_log_addr(CEC_LOG_ADDR_INVALID) will clear all configured logical
+addresses.
+
+The adap_transmit op will setup the hardware to send out the given CEC message.
+This will return without waiting for the transmission to finish. The
+adap_transmit_timed_out() function is called when the current transmission timed
+out and the hardware needs to be informed of this (the hardware should go back
+from transmitter to receiver mode).
+
+The adapter driver will also call into the adapter: it should call
+cec_transmit_done() when a cec transfer was finalized and cec_received_msg()
+when a new message was received.
+
+When a message is received the received() op is called.
+
+The driver has to call cec_create_adapter to initialize the structure. If
+the 'caps' argument is non-zero, then it will also create a /dev/cecX
+device node to allow userspace to interact with the CEC device. Userspace
+can request those capabilities with the CEC_G_CAPS ioctl.
+
+In order for a CEC adapter to be configured it needs a physical address.
+This is normally assigned by the driver. It is either 0.0.0.0 for a TV (aka
+video receiver) or it is derived from the EDID that the source received
+from the sink. This is normally set by the driver before enabling the CEC
+adapter, or it is set from userspace in the case of CEC USB dongles (although
+embedded systems might also want to set this manually).
+
+After enabling the CEC adapter it has to be configured.
+
+The userspace has to inform the CEC adapter of which type of device it requests
+the adapter to identify itself. After this information is set by userspace, the
+CEC framework will attempt to to find and claim a logical addresses matching the
+requested device type. If none are found, then it will fall back to logical
+address Unregistered (15). To clear the logical addresses list from the list the
+userspace application should set the num_log_addrs field of struct cec_log_addr
+to 0.
+
+The type of device is set from the userspace with the CEC_S_ADAP_LOG_ADDRS. In
+addition, claiming logical addresses can be initiated from the kernel side by
+calling the cec_claim_log_addrs function.
+
+Before the addresses are claimed it is possible to send and receive messages.
+Sending all messages is possible as it is up to the userspace to the source
+and destination addresses in the message payload. However, only broadcast
+messages can be received until a regular logical address is claimed.
+
+When a CEC message is received the CEC framework will take care of the CEC
+core messages CEC_MSG_GET_CEC_VERSION, CEC_MSG_GIVE_PHYS_ADDR and CEC_MSG_ABORT.
+Then it will call the received() op (if set), and finally it will queue it
+for handling by userspace if create_devnode was true, or send back
+FEATURE_ABORT if create_devnode was false.
+
+Drivers can also use the cec_transmit_msg() call to transmit a message. This
+can either be fire-and-forget (the CEC framework will queue up messages in a
+transmit queue), or a blocking wait until there is either an error or a
+reply to the message.
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 09/15] DocBook/media: add CEC documentation
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (7 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 08/15] cec.txt: add CEC framework documentation Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 10/15] v4l2-subdev: add HDMI CEC ops Hans Verkuil
` (5 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil,
Hans Verkuil, Hans Verkuil
From: Hans Verkuil <hverkuil@xs4all.nl>
Add DocBook documentation for the CEC API.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
[k.debski@samsung.com: add documentation for passthrough mode]
[k.debski@samsung.com: minor fixes and change of reserved field sizes]
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
Documentation/DocBook/media/Makefile | 2 +
Documentation/DocBook/media/v4l/biblio.xml | 10 +
Documentation/DocBook/media/v4l/cec-api.xml | 74 +++++
Documentation/DocBook/media/v4l/cec-func-close.xml | 59 ++++
Documentation/DocBook/media/v4l/cec-func-ioctl.xml | 73 +++++
Documentation/DocBook/media/v4l/cec-func-open.xml | 94 +++++++
Documentation/DocBook/media/v4l/cec-func-poll.xml | 89 ++++++
.../DocBook/media/v4l/cec-ioc-g-adap-log-addrs.xml | 299 +++++++++++++++++++++
.../DocBook/media/v4l/cec-ioc-g-adap-phys-addr.xml | 78 ++++++
.../DocBook/media/v4l/cec-ioc-g-adap-state.xml | 87 ++++++
Documentation/DocBook/media/v4l/cec-ioc-g-caps.xml | 138 ++++++++++
.../DocBook/media/v4l/cec-ioc-g-event.xml | 125 +++++++++
.../DocBook/media/v4l/cec-ioc-g-passthrough.xml | 88 ++++++
.../DocBook/media/v4l/cec-ioc-g-vendor-id.xml | 70 +++++
.../DocBook/media/v4l/cec-ioc-receive.xml | 185 +++++++++++++
Documentation/DocBook/media_api.tmpl | 8 +-
16 files changed, 1477 insertions(+), 2 deletions(-)
create mode 100644 Documentation/DocBook/media/v4l/cec-api.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-func-close.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-func-ioctl.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-func-open.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-func-poll.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-adap-log-addrs.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-adap-phys-addr.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-adap-state.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-caps.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-event.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-passthrough.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-g-vendor-id.xml
create mode 100644 Documentation/DocBook/media/v4l/cec-ioc-receive.xml
diff --git a/Documentation/DocBook/media/Makefile b/Documentation/DocBook/media/Makefile
index 23996f8..5c89f4b 100644
--- a/Documentation/DocBook/media/Makefile
+++ b/Documentation/DocBook/media/Makefile
@@ -64,6 +64,7 @@ IOCTLS = \
$(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/net.h) \
$(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/video.h) \
$(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/cec.h) \
$(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \
DEFINES = \
@@ -100,6 +101,7 @@ STRUCTS = \
$(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/ && !/_old/)' $(srctree)/include/uapi/linux/dvb/net.h) \
$(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/video.h) \
$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/cec.h) \
$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \
$(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-mediabus.h)
diff --git a/Documentation/DocBook/media/v4l/biblio.xml b/Documentation/DocBook/media/v4l/biblio.xml
index fdee6b3..bed940b 100644
--- a/Documentation/DocBook/media/v4l/biblio.xml
+++ b/Documentation/DocBook/media/v4l/biblio.xml
@@ -324,6 +324,16 @@ in the frequency range from 87,5 to 108,0 MHz</title>
<subtitle>Specification Version 1.4a</subtitle>
</biblioentry>
+ <biblioentry id="hdmi2">
+ <abbrev>HDMI2</abbrev>
+ <authorgroup>
+ <corpauthor>HDMI Licensing LLC
+(<ulink url="http://www.hdmi.org">http://www.hdmi.org</ulink>)</corpauthor>
+ </authorgroup>
+ <title>High-Definition Multimedia Interface</title>
+ <subtitle>Specification Version 2.0</subtitle>
+ </biblioentry>
+
<biblioentry id="dp">
<abbrev>DP</abbrev>
<authorgroup>
diff --git a/Documentation/DocBook/media/v4l/cec-api.xml b/Documentation/DocBook/media/v4l/cec-api.xml
new file mode 100644
index 0000000..b59f610
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-api.xml
@@ -0,0 +1,74 @@
+<partinfo>
+ <authorgroup>
+ <author>
+ <firstname>Hans</firstname>
+ <surname>Verkuil</surname>
+ <affiliation><address><email>hans.verkuil@cisco.com</email></address></affiliation>
+ <contrib>Initial version.</contrib>
+ </author>
+ </authorgroup>
+ <copyright>
+ <year>2015</year>
+ <holder>Hans Verkuil</holder>
+ </copyright>
+
+ <revhistory>
+ <!-- Put document revisions here, newest first. -->
+ <revision>
+ <revnumber>1.0.0</revnumber>
+ <date>2015-04-27</date>
+ <authorinitials>hv</authorinitials>
+ <revremark>Initial revision</revremark>
+ </revision>
+ </revhistory>
+</partinfo>
+
+<title>CEC API</title>
+
+<chapter id="cec-api">
+ <title>CEC: Consumer Electronics Control</title>
+
+ <section id="cec-intro">
+ <title>Introduction</title>
+ <para>HDMI connectors provide a single pin for use by the Consumer Electronics
+ Control protocol. This protocol allows different devices connected by an HDMI cable
+ to communicate. The protocol for CEC version 1.4 is defined in supplements 1 (CEC)
+ and 2 (HEAC or HDMI Ethernet and Audio Return Channel) of the HDMI 1.4a
+ (<xref linkend="hdmi" />) specification and the extensions added to CEC version 2.0
+ are defined in chapter 11 of the HDMI 2.0 (<xref linkend="hdmi2" />) specification.
+ </para>
+
+ <para>The bitrate is very slow (effectively no more than 36 bytes per second) and
+ is based on the ancient AV.link protocol used in old SCART connectors. The protocol
+ closely resembles a crazy Rube Goldberg contraption and is an unholy mix of low and
+ high level messages. Some messages, especially those part of the HEAC protocol layered
+ on top of CEC, need to be handled by the kernel, others can be handled either by the
+ kernel or by userspace.</para>
+
+ <para>In addition, CEC can be implemented in HDMI receivers, transmitters and in USB
+ devices that have an HDMI input and an HDMI output and that control just the CEC pin.</para>
+
+ <para>Drivers that support CEC and that allow (or require) userspace to handle CEC
+ messages and/or configure the CEC adapter will create a CEC device node (/dev/cecX)
+ to give userspace access to the CEC adapter. The &CEC-G-CAPS; ioctl will tell userspace
+ what it is allowed to do.</para>
+ </section>
+</chapter>
+
+<appendix id="cec-user-func">
+ <title>Function Reference</title>
+ <!-- Keep this alphabetically sorted. -->
+ &sub-cec-func-open;
+ &sub-cec-func-close;
+ &sub-cec-func-ioctl;
+ &sub-cec-func-poll;
+ <!-- All ioctls go here. -->
+ &sub-cec-ioc-g-caps;
+ &sub-cec-ioc-receive;
+ &sub-cec-ioc-g-adap-log-addrs;
+ &sub-cec-ioc-g-adap-state;
+ &sub-cec-ioc-g-adap-phys-addr;
+ &sub-cec-ioc-g-event;
+ &sub-cec-ioc-g-vendor-id;
+ &sub-cec-ioc-g-passthrough;
+</appendix>
diff --git a/Documentation/DocBook/media/v4l/cec-func-close.xml b/Documentation/DocBook/media/v4l/cec-func-close.xml
new file mode 100644
index 0000000..c3978af
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-func-close.xml
@@ -0,0 +1,59 @@
+<refentry id="cec-func-close">
+ <refmeta>
+ <refentrytitle>cec close()</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>cec-close</refname>
+ <refpurpose>Close a cec device</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcsynopsisinfo>#include <unistd.h></funcsynopsisinfo>
+ <funcprototype>
+ <funcdef>int <function>close</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Closes the cec device. Resources associated with the file descriptor
+ are freed. The device configuration remain unchanged.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Return Value</title>
+
+ <para><function>close</function> returns 0 on success. On error, -1 is
+ returned, and <varname>errno</varname> is set appropriately. Possible error
+ codes are:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EBADF</errorcode></term>
+ <listitem>
+ <para><parameter>fd</parameter> is not a valid open file descriptor.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-func-ioctl.xml b/Documentation/DocBook/media/v4l/cec-func-ioctl.xml
new file mode 100644
index 0000000..ad85973
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-func-ioctl.xml
@@ -0,0 +1,73 @@
+<refentry id="cec-func-ioctl">
+ <refmeta>
+ <refentrytitle>cec ioctl()</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>cec-ioctl</refname>
+ <refpurpose>Control a cec device</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>void *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC ioctl request code as defined in the cec.h header file,
+ for example CEC_G_CAPS.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para>Pointer to a request-specific structure.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+ <para>The <function>ioctl()</function> function manipulates cec device
+ parameters. The argument <parameter>fd</parameter> must be an open file
+ descriptor.</para>
+ <para>The ioctl <parameter>request</parameter> code specifies the cec
+ function to be called. It has encoded in it whether the argument is an
+ input, output or read/write parameter, and the size of the argument
+ <parameter>argp</parameter> in bytes.</para>
+ <para>Macros and structures definitions specifying cec ioctl requests and
+ their parameters are located in the cec.h header file. All cec ioctl
+ requests, their respective function and parameters are specified in
+ <xref linkend="cec-user-func" />.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <para>Request-specific error codes are listed in the
+ individual requests descriptions.</para>
+ <para>When an ioctl that takes an output or read/write parameter fails,
+ the parameter remains unmodified.</para>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-func-open.xml b/Documentation/DocBook/media/v4l/cec-func-open.xml
new file mode 100644
index 0000000..d814847
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-func-open.xml
@@ -0,0 +1,94 @@
+<refentry id="cec-func-open">
+ <refmeta>
+ <refentrytitle>cec open()</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>cec-open</refname>
+ <refpurpose>Open a cec device</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcsynopsisinfo>#include <fcntl.h></funcsynopsisinfo>
+ <funcprototype>
+ <funcdef>int <function>open</function></funcdef>
+ <paramdef>const char *<parameter>device_name</parameter></paramdef>
+ <paramdef>int <parameter>flags</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>device_name</parameter></term>
+ <listitem>
+ <para>Device to be opened.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>flags</parameter></term>
+ <listitem>
+ <para>Open flags. Access mode must be either <constant>O_RDONLY</constant>
+ or <constant>O_RDWR</constant>. Other flags have no effect.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+ <refsect1>
+ <title>Description</title>
+ <para>To open a cec device applications call <function>open()</function>
+ with the desired device name. The function has no side effects; the device
+ configuration remain unchanged.</para>
+ <para>When the device is opened in read-only mode, attempts to modify its
+ configuration will result in an error, and <varname>errno</varname> will be
+ set to <errorcode>EBADF</errorcode>.</para>
+ </refsect1>
+ <refsect1>
+ <title>Return Value</title>
+
+ <para><function>open</function> returns the new file descriptor on success.
+ On error, -1 is returned, and <varname>errno</varname> is set appropriately.
+ Possible error codes are:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EACCES</errorcode></term>
+ <listitem>
+ <para>The requested access to the file is not allowed.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EMFILE</errorcode></term>
+ <listitem>
+ <para>The process already has the maximum number of files open.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>ENFILE</errorcode></term>
+ <listitem>
+ <para>The system limit on the total number of open files has been
+ reached.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>ENOMEM</errorcode></term>
+ <listitem>
+ <para>Insufficient kernel memory was available.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>ENXIO</errorcode></term>
+ <listitem>
+ <para>No device corresponding to this device special file exists.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-func-poll.xml b/Documentation/DocBook/media/v4l/cec-func-poll.xml
new file mode 100644
index 0000000..6853817
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-func-poll.xml
@@ -0,0 +1,89 @@
+<refentry id="cec-func-poll">
+ <refmeta>
+ <refentrytitle>cec poll()</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>cec-poll</refname>
+ <refpurpose>Wait for some event on a file descriptor</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcsynopsisinfo>#include <sys/poll.h></funcsynopsisinfo>
+ <funcprototype>
+ <funcdef>int <function>poll</function></funcdef>
+ <paramdef>struct pollfd *<parameter>ufds</parameter></paramdef>
+ <paramdef>unsigned int <parameter>nfds</parameter></paramdef>
+ <paramdef>int <parameter>timeout</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>With the <function>poll()</function> function applications
+can wait for CEC events.</para>
+
+ <para>On success <function>poll()</function> returns the number of
+file descriptors that have been selected (that is, file descriptors
+for which the <structfield>revents</structfield> field of the
+respective <structname>pollfd</structname> structure is non-zero).
+CEC devices set the <constant>POLLIN</constant> and
+<constant>POLLRDNORM</constant> flags in the
+<structfield>revents</structfield> field if there are messages in the
+receive queue. If the transmit queue has room for new messages, the
+<constant>POLLOUT</constant> and <constant>POLLWRNORM</constant>
+flags are set. If there are events in the event queue, then the
+<constant>POLLPRI</constant> flag is set.
+When the function timed out it returns a value of zero, on
+failure it returns <returnvalue>-1</returnvalue> and the
+<varname>errno</varname> variable is set appropriately.
+</para>
+
+ <para>For more details see the
+<function>poll()</function> manual page.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Return Value</title>
+
+ <para>On success, <function>poll()</function> returns the number
+structures which have non-zero <structfield>revents</structfield>
+fields, or zero if the call timed out. On error
+<returnvalue>-1</returnvalue> is returned, and the
+<varname>errno</varname> variable is set appropriately:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EBADF</errorcode></term>
+ <listitem>
+ <para>One or more of the <parameter>ufds</parameter> members
+specify an invalid file descriptor.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EFAULT</errorcode></term>
+ <listitem>
+ <para><parameter>ufds</parameter> references an inaccessible
+memory area.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EINTR</errorcode></term>
+ <listitem>
+ <para>The call was interrupted by a signal.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The <parameter>nfds</parameter> argument is greater
+than <constant>OPEN_MAX</constant>.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-g-adap-log-addrs.xml b/Documentation/DocBook/media/v4l/cec-ioc-g-adap-log-addrs.xml
new file mode 100644
index 0000000..eff1b96
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-g-adap-log-addrs.xml
@@ -0,0 +1,299 @@
+<refentry id="cec-ioc-g-adap-log-addrs">
+ <refmeta>
+ <refentrytitle>ioctl CEC_G_ADAP_LOG_ADDRS, CEC_S_ADAP_LOG_ADDRS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_G_ADAP_LOG_ADDRS</refname>
+ <refname>CEC_S_ADAP_LOG_ADDRS</refname>
+ <refpurpose>Get or set the logical addresses</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct cec_log_addrs *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_G_ADAP_LOG_ADDRS, CEC_S_ADAP_LOG_ADDRS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current CEC logical addresses applications call the
+<constant>CEC_G_ADAP_LOG_ADDRS</constant> ioctl with a pointer to a
+<structname>cec_log_addrs</structname> structure where the drivers stores the
+logical addresses.</para>
+
+ <para>To set new logical addresses applications fill in struct <structname>cec_log_addrs</structname>
+and call the <constant>CEC_S_ADAP_LOG_ADDRS</constant> ioctl with a pointer to this struct.
+The <constant>CEC_S_ADAP_LOG_ADDRS</constant> ioctl is only available if
+<constant>CEC_CAP_LOG_ADDRS</constant> is set. This ioctl will block until all
+requested logical addresses have been claimed.</para>
+
+ <table pgwide="1" frame="none" id="cec-log-addrs">
+ <title>struct <structname>cec_log_addrs</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>cec_version</structfield></entry>
+ <entry>The CEC version that this adapter shall use. See
+ <xref linkend="cec-versions" />.
+ Used to implement the <constant>CEC_MSG_CEC_VERSION</constant> and
+ <constant>CEC_MSG_REPORT_FEATURES</constant> messages. Note that
+ <constant>CEC_OP_CEC_VERSION_1_3A</constant> is not allowed
+ by the CEC framework.
+ </entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>num_log_addrs</structfield></entry>
+ <entry>Number of logical addresses to set up. Must be ≤
+ <structfield>available_log_addrs</structfield> as returned by
+ &CEC-G-CAPS;. All arrays in this structure are only filled up to
+ index <structfield>available_log_addrs</structfield>-1. The remaining
+ array elements will be ignored. Note that the CEC 2.0 standard allows
+ for a maximum of 2 logical addresses, although some hardware has support
+ for more. <constant>CEC_MAX_LOG_ADDRS</constant> is 4. The driver will
+ return the actual number of logical addresses it could claim, which may
+ be less than what was requested. If this field is set to 0, then the
+ CEC adapter shall clear all claimed logical addresses and all other
+ fields will be ignored.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>primary_device_type</structfield>[CEC_MAX_LOG_ADDRS]</entry>
+ <entry>Primary device type for each logical address. See
+ <xref linkend="cec-prim-dev-types" /> for possible types.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>log_addr_type</structfield>[CEC_MAX_LOG_ADDRS]</entry>
+ <entry>Logical address types. See <xref linkend="cec-log-addr-types" /> for
+ possible types. The driver will update this with the actual logical address
+ type that it claimed (e.g. it may have to fallback to
+ <constant>CEC_LOG_ADDR_TYPE_UNREGISTERED</constant>).</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>log_addr</structfield>[CEC_MAX_LOG_ADDRS]</entry>
+ <entry>The actual logical addresses that were claimed. This is set by the
+ driver. If no logical address could be claimed, then it is set to
+ <constant>CEC_LOG_ADDR_INVALID</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>all_device_types</structfield></entry>
+ <entry>CEC 2.0 specific: all device types. See <xref linkend="cec-all-dev-types-flags" />.
+ Used to implement the <constant>CEC_MSG_REPORT_FEATURES</constant> message.
+ This field is ignored if <structfield>cec_version</structfield> <
+ <constant>CEC_OP_CEC_VERSION_2_0</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>features</structfield>[CEC_MAX_LOG_ADDRS][12]</entry>
+ <entry>Features for each logical address. Used to implement the
+ <constant>CEC_MSG_REPORT_FEATURES</constant> message. The 12 bytes include
+ both the RC Profile and the Device Features.
+ This field is ignored if <structfield>cec_version</structfield> <
+ <constant>CEC_OP_CEC_VERSION_2_0</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>reserved</structfield>[65]</entry>
+ <entry>Reserved for future extensions. Drivers and applications must
+ set this array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="cec-versions">
+ <title>CEC Versions</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_OP_CEC_VERSION_1_3A</constant></entry>
+ <entry>4</entry>
+ <entry>CEC version according to the HDMI 1.3a standard.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_CEC_VERSION_1_4B</constant></entry>
+ <entry>5</entry>
+ <entry>CEC version according to the HDMI 1.4b standard.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_CEC_VERSION_2_0</constant></entry>
+ <entry>6</entry>
+ <entry>CEC version according to the HDMI 2.0 standard.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="cec-prim-dev-types">
+ <title>CEC Primary Device Types</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_OP_PRIM_DEVTYPE_TV</constant></entry>
+ <entry>0</entry>
+ <entry>Use for a TV.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_PRIM_DEVTYPE_RECORD</constant></entry>
+ <entry>1</entry>
+ <entry>Use for a recording device.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_PRIM_DEVTYPE_TUNER</constant></entry>
+ <entry>3</entry>
+ <entry>Use for a device with a tuner.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_PRIM_DEVTYPE_PLAYBACK</constant></entry>
+ <entry>4</entry>
+ <entry>Use for a playback device.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM</constant></entry>
+ <entry>5</entry>
+ <entry>Use for an audio system (e.g. an audio/video receiver).</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_PRIM_DEVTYPE_SWITCH</constant></entry>
+ <entry>6</entry>
+ <entry>Use for a CEC switch.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_PRIM_DEVTYPE_VIDEOPROC</constant></entry>
+ <entry>7</entry>
+ <entry>Use for a video processor device.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="cec-log-addr-types">
+ <title>CEC Logical Address Types</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_LOG_ADDR_TYPE_TV</constant></entry>
+ <entry>0</entry>
+ <entry>Use for a TV.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_LOG_ADDR_TYPE_RECORD</constant></entry>
+ <entry>1</entry>
+ <entry>Use for a recording device.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_LOG_ADDR_TYPE_TUNER</constant></entry>
+ <entry>2</entry>
+ <entry>Use for a tuner device.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_LOG_ADDR_TYPE_PLAYBACK</constant></entry>
+ <entry>3</entry>
+ <entry>Use for a playback device.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_LOG_ADDR_TYPE_AUDIOSYSTEM</constant></entry>
+ <entry>4</entry>
+ <entry>Use for an audio system device.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_LOG_ADDR_TYPE_SPECIFIC</constant></entry>
+ <entry>5</entry>
+ <entry>Use for a second TV or for a video processor device.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_LOG_ADDR_TYPE_UNREGISTERED</constant></entry>
+ <entry>6</entry>
+ <entry>Fallback if all relevant logical addresses are claimed, or for
+ pure CEC switches or CDC-only devices (CDC: Capability Discovery and Control).</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="cec-all-dev-types-flags">
+ <title>CEC All Device Types Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_OP_ALL_DEVTYPE_TV</constant></entry>
+ <entry>0x80</entry>
+ <entry>This supports the TV type.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_ALL_DEVTYPE_RECORD</constant></entry>
+ <entry>0x40</entry>
+ <entry>This supports the Recording type.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_ALL_DEVTYPE_TUNER</constant></entry>
+ <entry>0x20</entry>
+ <entry>This supports the Tuner type.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_ALL_DEVTYPE_PLAYBACK</constant></entry>
+ <entry>0x10</entry>
+ <entry>This supports the Playback type.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM</constant></entry>
+ <entry>0x08</entry>
+ <entry>This supports the Audio System type.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_OP_ALL_DEVTYPE_SWITCH</constant></entry>
+ <entry>0x04</entry>
+ <entry>This supports the CEC Switch or Video Processing type.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-g-adap-phys-addr.xml b/Documentation/DocBook/media/v4l/cec-ioc-g-adap-phys-addr.xml
new file mode 100644
index 0000000..0e201af
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-g-adap-phys-addr.xml
@@ -0,0 +1,78 @@
+<refentry id="cec-ioc-g-adap-phys-addr">
+ <refmeta>
+ <refentrytitle>ioctl CEC_G_ADAP_PHYS_ADDR, CEC_S_ADAP_PHYS_ADDR</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_G_ADAP_PHYS_ADDR</refname>
+ <refname>CEC_S_ADAP_PHYS_ADDR</refname>
+ <refpurpose>Get or set the physical address</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>__u16 *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_G_ADAP_PHYS_ADDR, CEC_S_ADAP_PHYS_ADDR</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current physical address applications call the
+<constant>CEC_G_ADAP_PHYS_ADDR</constant> ioctl with a pointer to an __u16
+where the driver stores the physical address.</para>
+
+ <para>To set a new physical address applications store the physical address in
+an __u16 and call the <constant>CEC_S_ADAP_PHYS_ADDR</constant> ioctl with a
+pointer to this integer. <constant>CEC_S_ADAP_PHYS_ADDR</constant> is only
+available if <constant>CEC_CAP_PHYS_ADDR</constant> is set.</para>
+
+ <para>The physical address is a 16-bit number where each group of 4 bits
+represent a digit of the physical address a.b.c.d where the most significant
+4 bits represent 'a'. The CEC root device (usually the TV) has address 0.0.0.0.
+Every device that is hooked up to an input of the TV has address a.0.0.0 (where
+'a' is ≥ 1), devices hooked up to those in turn have addresses a.b.0.0, etc.
+So a topology of up to 5 devices deep is supported. The physical address a
+device shall use is stored in the EDID of the sink.</para>
+
+<para>For example, the EDID for each HDMI input of the TV will have a different
+physical address of the form a.0.0.0 that the sources will read out and use as
+their physical address.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-g-adap-state.xml b/Documentation/DocBook/media/v4l/cec-ioc-g-adap-state.xml
new file mode 100644
index 0000000..f20dd17
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-g-adap-state.xml
@@ -0,0 +1,87 @@
+<refentry id="cec-ioc-g-adap-state">
+ <refmeta>
+ <refentrytitle>ioctl CEC_G_ADAP_STATE, CEC_S_ADAP_STATE</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_G_ADAP_STATE</refname>
+ <refname>CEC_S_ADAP_STATE</refname>
+ <refpurpose>Get or set the adapter state</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>__u32 *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_G_ADAP_STATE, CEC_S_ADAP_STATE</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current adapter state applications call the
+<constant>CEC_G_ADAP_STATE</constant> ioctl with a pointer to an __u32
+where the driver stores the state.</para>
+
+ <para>To set the adapter state applications store the CEC adapter state
+in an __u32 and call the <constant>CEC_S_ADAP_STATE</constant> ioctl with a
+pointer to this integer. <constant>CEC_S_ADAP_STATE</constant> is only
+available if <constant>CEC_CAP_STATE</constant> is set.</para>
+
+ <para>Available states are:</para>
+
+ <table pgwide="1" frame="none" id="cec-adap-states">
+ <title>Adapter States</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_STATE_DISABLED</constant></entry>
+ <entry>0</entry>
+ <entry>The adapter is disabled.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_STATE_ENABLED</constant></entry>
+ <entry>1</entry>
+ <entry>The adapter is enabled.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-g-caps.xml b/Documentation/DocBook/media/v4l/cec-ioc-g-caps.xml
new file mode 100644
index 0000000..dbec5210
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-g-caps.xml
@@ -0,0 +1,138 @@
+<refentry id="cec-ioc-g-caps">
+ <refmeta>
+ <refentrytitle>ioctl CEC_G_CAPS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_G_CAPS</refname>
+ <refpurpose>Query device capabilities</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct cec_caps *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_G_CAPS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>All cec devices must support the <constant>CEC_G_CAPS</constant>
+ ioctl. To query device information, applications call the ioctl with a
+ pointer to a &cec-caps;. The driver fills the structure and returns
+ the information to the application.
+ The ioctl never fails.</para>
+
+ <table pgwide="1" frame="none" id="cec-caps">
+ <title>struct <structname>cec_caps</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>available_log_addrs</structfield></entry>
+ <entry>How many logical addresses does the CEC adapter support. This will
+ be at most <constant>CEC_MAX_LOG_ADDRS</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capabilities</structfield></entry>
+ <entry>The capabilities of the CEC adapter, see <xref
+ linkend="cec-capabilities" />.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>reserved</structfield>[40]</entry>
+ <entry>Reserved for future extensions. Drivers must
+ set this array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="cec-capabilities">
+ <title>CEC Capabilities Flags</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_CAP_STATE</constant></entry>
+ <entry>0x00000001</entry>
+ <entry>Userspace has to configure the adapter state (enable or disable it) by
+ calling &CEC-S-ADAP-STATE;.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_CAP_PHYS_ADDR</constant></entry>
+ <entry>0x00000002</entry>
+ <entry>Userspace has to configure the physical address by
+ calling &CEC-S-ADAP-PHYS-ADDR;.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_CAP_LOG_ADDRS</constant></entry>
+ <entry>0x00000004</entry>
+ <entry>Userspace has to configure the logical addresses by
+ calling &CEC-S-ADAP-LOG-ADDRS;.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_CAP_TRANSMIT</constant></entry>
+ <entry>0x00000008</entry>
+ <entry>Userspace can transmit messages by calling &CEC-TRANSMIT;.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_CAP_RECEIVE</constant></entry>
+ <entry>0x00000010</entry>
+ <entry>Userspace can receive messages by calling &CEC-RECEIVE;.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_CAP_VENDOR_ID</constant></entry>
+ <entry>0x00000020</entry>
+ <entry>Userspace has to configure the vendor ID by
+ calling &CEC-S-VENDOR-ID;.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_CAP_PASSTHROUGH</constant></entry>
+ <entry>0x00000040</entry>
+ <entry>Userspace can use the passthrough mode by
+ calling &CEC-S-PASSTHROUGH;.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-g-event.xml b/Documentation/DocBook/media/v4l/cec-ioc-g-event.xml
new file mode 100644
index 0000000..cbde320
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-g-event.xml
@@ -0,0 +1,125 @@
+<refentry id="cec-ioc-g-event">
+ <refmeta>
+ <refentrytitle>ioctl CEC_G_EVENT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_G_EVENT</refname>
+ <refpurpose>Get a CEC event</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct cec_event *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_G_EVENT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>CEC devices can send asynchronous events. These can be retrieved by calling
+ the <constant>CEC_G_EVENT</constant> ioctl. If the file descriptor is in non-blocking
+ mode and no event is pending, then it will return -1 and set errno to the &EAGAIN;.</para>
+
+ <para>There can be up to 40 events queued up. If more events are added, then the oldest event will be discarded.</para>
+
+ <table pgwide="1" frame="none" id="cec-event">
+ <title>struct <structname>cec_event</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>ts</structfield></entry>
+ <entry>Timestamp of the event in ns.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>event</structfield></entry>
+ <entry>The event, see <xref linkend="cec-events" />.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>sequence</structfield></entry>
+ <entry>For the <constant>CEC_EVENT_GOT_REPLY</constant> event this
+ holds the sequence number of message that requested the reply.
+ </entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>reserved</structfield>[8]</entry>
+ <entry>Reserved for future extensions. Drivers must
+ set this array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="cec-events">
+ <title>CEC Events</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_EVENT_CONNECT</constant></entry>
+ <entry>1</entry>
+ <entry>Generated when the HDMI cable is connected.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_EVENT_READY</constant></entry>
+ <entry>2</entry>
+ <entry>Generated when all logical addresses are claimed.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_EVENT_DISCONNECT</constant></entry>
+ <entry>3</entry>
+ <entry>Generated when the HDMI cable is disconnected.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_EVENT_GOT_REPLY</constant></entry>
+ <entry>4</entry>
+ <entry>Generated when a reply is received for a previously sent
+ message. Generated only if a reply was requested and only if the
+ message was sent in non-blocking mode.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-g-passthrough.xml b/Documentation/DocBook/media/v4l/cec-ioc-g-passthrough.xml
new file mode 100644
index 0000000..cd5e219
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-g-passthrough.xml
@@ -0,0 +1,88 @@
+<refentry id="cec-ioc-g-passthrough">
+ <refmeta>
+ <refentrytitle>ioctl CEC_G_PASSTHROUGH, CEC_S_PASSTHROUGH</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_G_PASSTHROUGH</refname>
+ <refname>CEC_S_PASSTHROUGH</refname>
+ <refpurpose>Get or set the passthrough mode</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>__u32 *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_G_PASSTHROUGH, CEC_S_PASSTHROUGH</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current state of the passhrough mode the applications
+ call the <constant>CEC_G_PASSTHROUGH</constant> ioctl with a pointer to an
+ __u32 where the driver stores the state.</para>
+
+ <para>To set the state of the passthrough mode applications store the
+ passthrough mode state in an __u32 and call the <constant>CEC_S_PASSTHROUGH
+ </constant> ioctl with a pointer to this integer.
+ <constant>CEC_S_PASSTHROUGH</constant> is only available if
+ <constant>CEC_CAP_PASSTHROUGH</constant> is set.</para>
+
+ <para>Available states are:</para>
+
+ <table pgwide="1" frame="none" id="cec-adap-passthrough-states">
+ <title>Adapter Passthrough States</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_PASSTHROUGH_DISABLED</constant></entry>
+ <entry>0</entry>
+ <entry>The passthrough mode is disabled.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_PASSTHROUGH_ENABLED</constant></entry>
+ <entry>1</entry>
+ <entry>The passthrough is enabled.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-g-vendor-id.xml b/Documentation/DocBook/media/v4l/cec-ioc-g-vendor-id.xml
new file mode 100644
index 0000000..642e6b5
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-g-vendor-id.xml
@@ -0,0 +1,70 @@
+<refentry id="cec-ioc-g-vendor-id">
+ <refmeta>
+ <refentrytitle>ioctl CEC_G_VENDOR_ID, CEC_S_VENDOR_ID</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_G_VENDOR_ID</refname>
+ <refname>CEC_S_VENDOR_ID</refname>
+ <refpurpose>Get or set vendor ID</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>__u32 *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_G_VENDOR_ID, CEC_S_VENDOR_ID</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To query the current CEC vendor ID applications call the
+<constant>CEC_G_VENDOR_ID</constant> ioctl with a pointer to an __u32
+where the driver stores the vendor ID.</para>
+
+ <para>To set a new vendor ID applications store the vendor ID in
+an __u32 and call the <constant>CEC_S_VENDOR_ID</constant> ioctl with a
+pointer to this integer. <constant>CEC_S_VENDOR_ID</constant> is only
+available if <constant>CEC_CAP_VENDOR_ID</constant> is set.</para>
+
+ <para>The vendor ID is a 24-bit number that identifies the specific
+vendor or entity. Based on this ID vendor specific commands may be
+defined.</para>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/cec-ioc-receive.xml b/Documentation/DocBook/media/v4l/cec-ioc-receive.xml
new file mode 100644
index 0000000..4b793df
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/cec-ioc-receive.xml
@@ -0,0 +1,185 @@
+<refentry id="cec-ioc-receive">
+ <refmeta>
+ <refentrytitle>ioctl CEC_RECEIVE, CEC_TRANSMIT</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>CEC_RECEIVE</refname>
+ <refname>CEC_TRANSMIT</refname>
+ <refpurpose>Receive or transmit a CEC message</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct cec_msg *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>File descriptor returned by
+ <link linkend='cec-func-open'><function>open()</function></link>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>CEC_RECEIVE, CEC_TRANSMIT</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>To receive a CEC message the application has to fill in the
+ <structname>cec_msg</structname> structure and pass it to the
+ <constant>CEC_RECEIVE</constant> ioctl. <constant>CEC_RECEIVE</constant> is
+ only available if <constant>CEC_CAP_RECEIVE</constant> is set. If the
+ file descriptor is in non-blocking mode and there are no received
+ messages pending, then it will return -1 and set errno to the &EAGAIN;.
+ If the file descriptor is in blocking mode and <structfield>timeout</structfield>
+ is non-zero and no message arrived within <structfield>timeout</structfield>
+ milliseconds, then it will return -1 and set errno to the &ETIMEDOUT;.</para>
+
+ <para>To send a CEC message the application has to fill in the
+ <structname>cec_msg</structname> structure and pass it to the
+ <constant>CEC_TRANSMIT</constant> ioctl. <constant>CEC_TRANSMIT</constant> is
+ only available if <constant>CEC_CAP_TRANSMIT</constant> is set.
+ If there is no more room in the transmit queue, then it will return
+ -1 and set errno to the &EBUSY;.</para>
+
+ <table pgwide="1" frame="none" id="cec-msg">
+ <title>struct <structname>cec_msg</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>ts</structfield></entry>
+ <entry>Timestamp of when the message was transmitted in ns in the case
+ of <constant>CEC_TRANSMIT</constant> with <structfield>reply</structfield>
+ set to 0, or the timestamp of the received message in all other cases.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>len</structfield></entry>
+ <entry>The length of the message. For <constant>CEC_TRANSMIT</constant> this
+ is filled in by the application. The driver will fill this in for
+ <constant>CEC_RECEIVE</constant> and for <constant>CEC_TRANSMIT</constant>
+ it will be filled in with the length of the reply message if
+ <structfield>reply</structfield> was set.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>status</structfield></entry>
+ <entry>The status of the message. When used with <constant>CEC_RECEIVE</constant>
+ this is always set to <constant>CEC_RX_STATUS_READY</constant>. When
+ used with <constant>CEC_TRANSMIT</constant> see <xref linkend="cec-tx-status" />
+ for the possible status values.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>timeout</structfield></entry>
+ <entry>The timeout in milliseconds. This is the time we wait for a message to
+ be received. If it is set to 0, then we wait indefinitely.
+ It is ignored by <constant>CEC_TRANSMIT</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>msg</structfield>[16]</entry>
+ <entry>The message payload. For <constant>CEC_TRANSMIT</constant> this
+ is filled in by the application. The driver will fill this in for
+ <constant>CEC_RECEIVE</constant> and for <constant>CEC_TRANSMIT</constant>
+ it will be filled in with the payload of the reply message if
+ <structfield>reply</structfield> was set.</entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>reply</structfield></entry>
+ <entry>Wait until this message is replied. If <structfield>reply</structfield>
+ is 0, then don't wait for a reply but return after transmitting the
+ message. If there was an error as indicated by a non-zero <structfield>status</structfield>
+ field, then <structfield>reply</structfield> is set to 0 by the driver.
+ Ignored by <constant>CEC_RECEIVE</constant>.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>sequence</structfield></entry>
+ <entry>The sequence number is automatically assigned by the CEC
+ framework for all transmitted messages. It can be later used by the
+ framework to generate an event if a reply for a message was
+ requested and the message was transmitted in a non-blocking mode.
+ </entry>
+ </row>
+ <row>
+ <entry>__u8</entry>
+ <entry><structfield>reserved</structfield>[35]</entry>
+ <entry>Reserved for future extensions. Drivers and applications must
+ set this array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="cec-tx-status">
+ <title>CEC Transmit Status</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>CEC_TX_STATUS_OK</constant></entry>
+ <entry>0x00</entry>
+ <entry>The message was transmitted successfully.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_TX_STATUS_ARB_LOST</constant></entry>
+ <entry>0x01</entry>
+ <entry>CEC line arbitration was lost.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_TX_STATUS_RETRY_TIMEOUT</constant></entry>
+ <entry>0x02</entry>
+ <entry>The transmit timed out. The timeout period is 200 ms for a polling
+ message and 1 second for other messages as specified by the CEC protocol.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_TX_STATUS_FEATURE_ABORT</constant></entry>
+ <entry>0x04</entry>
+ <entry>The message was transmitted successfully but the reply was
+ <constant>CEC_MSG_FEATURE_ABORT</constant>.</entry>
+ </row>
+ <row>
+ <entry><constant>CEC_TX_STATUS_REPLY_TIMEOUT</constant></entry>
+ <entry>0x08</entry>
+ <entry>The message was transmitted successfully but the reply was never
+ received within the 1 second timeout period (this timeout value is
+ specified by the CEC protocol).</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media_api.tmpl b/Documentation/DocBook/media_api.tmpl
index f3f5fe5..3f76d41 100644
--- a/Documentation/DocBook/media_api.tmpl
+++ b/Documentation/DocBook/media_api.tmpl
@@ -38,7 +38,7 @@
<title>LINUX MEDIA INFRASTRUCTURE API</title>
<copyright>
- <year>2009-2014</year>
+ <year>2009-2015</year>
<holder>LinuxTV Developers</holder>
</copyright>
@@ -75,7 +75,7 @@
</mediaobject>
</figure>
<para>The media infrastructure API was designed to control such
- devices. It is divided into four parts.</para>
+ devices. It is divided into five parts.</para>
<para>The first part covers radio, video capture and output,
cameras, analog TV devices and codecs.</para>
<para>The second part covers the
@@ -87,6 +87,7 @@
<xref linkend="fe-delivery-system-t" />.</para>
<para>The third part covers the Remote Controller API.</para>
<para>The fourth part covers the Media Controller API.</para>
+ <para>The fifth part covers the CEC (Consumer Electronics Control) API.</para>
<para>It should also be noted that a media device may also have audio
components, like mixers, PCM capture, PCM playback, etc, which
are controlled via ALSA API.</para>
@@ -107,6 +108,9 @@
<part id="media_common">
&sub-media-controller;
</part>
+<part id="cec">
+&sub-cec-api;
+</part>
<chapter id="gen_errors">
&sub-gen-errors;
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 10/15] v4l2-subdev: add HDMI CEC ops
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (8 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 09/15] DocBook/media: add CEC documentation Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 11/15] cec: adv7604: add cec support Hans Verkuil
` (4 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil,
Hans Verkuil
Add CEC callbacks to the v4l2_subdev_video_ops. These are the low-level CEC
ops that subdevs that support CEC have to implement.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
[k.debski@samsung.com: Merged changes from CEC Updates commit by Hans Verkuil]
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
include/media/v4l2-subdev.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index dc20102..53e220d 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -42,6 +42,9 @@
#define V4L2_DEVICE_NOTIFY_EVENT _IOW('v', 2, struct v4l2_event)
+#define V4L2_SUBDEV_CEC_TX_DONE _IOW('v', 2, u32)
+#define V4L2_SUBDEV_CEC_RX_MSG _IOW('v', 3, struct cec_msg)
+
struct v4l2_device;
struct v4l2_ctrl_handler;
struct v4l2_event_subscription;
@@ -50,6 +53,7 @@ struct v4l2_subdev;
struct v4l2_subdev_fh;
struct tuner_setup;
struct v4l2_mbus_frame_desc;
+struct cec_msg;
/* decode_vbi_line */
struct v4l2_decode_vbi_line {
@@ -338,6 +342,11 @@ struct v4l2_subdev_video_ops {
const struct v4l2_mbus_config *cfg);
int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf,
unsigned int *size);
+ unsigned (*cec_available_log_addrs)(struct v4l2_subdev *sd);
+ int (*cec_enable)(struct v4l2_subdev *sd, bool enable);
+ int (*cec_log_addr)(struct v4l2_subdev *sd, u8 logical_addr);
+ int (*cec_transmit)(struct v4l2_subdev *sd, struct cec_msg *msg);
+ void (*cec_transmit_timed_out)(struct v4l2_subdev *sd);
};
/*
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 11/15] cec: adv7604: add cec support.
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (9 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 10/15] v4l2-subdev: add HDMI CEC ops Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 12/15] adv7842: " Hans Verkuil
` (3 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil,
Hans Verkuil, Hans Verkuil
From: Hans Verkuil <hverkuil@xs4all.nl>
Add CEC support to the adv7604 driver.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
[k.debski@samsung.com: Merged changes from CEC Updates commit by Hans Verkuil]
[k.debski@samsung.com: add missing methods cec/io_write_and_or]
[k.debski@samsung.com: change adv7604 to adv76xx in added functions]
[hansverk@cisco.com: use _clr_set instead of _and_or]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
drivers/media/i2c/adv7604.c | 219 +++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 217 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index 808360f..a937391 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -39,6 +39,7 @@
#include <linux/workqueue.h>
#include <media/adv7604.h>
+#include <media/cec.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-dv-timings.h>
@@ -78,6 +79,8 @@ MODULE_LICENSE("GPL");
#define ADV76XX_OP_SWAP_CB_CR (1 << 0)
+#define ADV76XX_MAX_ADDRS (3)
+
enum adv76xx_type {
ADV7604,
ADV7611,
@@ -181,6 +184,10 @@ struct adv76xx_state {
u16 spa_port_a[2];
struct v4l2_fract aspect_ratio;
u32 rgb_quantization_range;
+ u8 cec_addr[ADV76XX_MAX_ADDRS];
+ u8 cec_valid_addrs;
+ bool cec_enabled_adap;
+
struct workqueue_struct *work_queues;
struct delayed_work delayed_work_enable_hotplug;
bool restart_stdi_once;
@@ -451,7 +458,8 @@ static inline int io_write(struct v4l2_subdev *sd, u8 reg, u8 val)
return adv_smbus_write_byte_data(state, ADV76XX_PAGE_IO, reg, val);
}
-static inline int io_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
+static inline int io_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask,
+ u8 val)
{
return io_write(sd, reg, (io_read(sd, reg) & ~mask) | val);
}
@@ -484,6 +492,12 @@ static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
return adv_smbus_write_byte_data(state, ADV76XX_PAGE_CEC, reg, val);
}
+static inline int cec_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask,
+ u8 val)
+{
+ return cec_write(sd, reg, (cec_read(sd, reg) & ~mask) | val);
+}
+
static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg)
{
struct adv76xx_state *state = to_state(sd);
@@ -1897,6 +1911,188 @@ static int adv76xx_set_format(struct v4l2_subdev *sd,
return 0;
}
+static void adv76xx_cec_tx_raw_status(struct v4l2_subdev *sd, u8 tx_raw_status)
+{
+ if ((cec_read(sd, 0x11) & 0x01) == 0) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: tx disabled\n", __func__);
+ return;
+ }
+
+ if (tx_raw_status & 0x02) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: arbitration lost\n",
+ __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_ARB_LOST);
+ return;
+ }
+ if (tx_raw_status & 0x04) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: retry failed\n", __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_RETRY_TIMEOUT);
+ return;
+ }
+ if (tx_raw_status & 0x01) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: ready ok\n", __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_OK);
+ return;
+ }
+}
+
+static void adv76xx_cec_isr(struct v4l2_subdev *sd, bool *handled)
+{
+ struct cec_msg msg;
+ u8 cec_irq;
+
+ /* cec controller */
+ cec_irq = io_read(sd, 0x4d) & 0x0f;
+ if (!cec_irq)
+ return;
+
+ v4l2_dbg(1, debug, sd, "%s: cec: irq 0x%x\n", __func__, cec_irq);
+ adv76xx_cec_tx_raw_status(sd, cec_irq);
+ if (cec_irq & 0x08) {
+ msg.len = cec_read(sd, 0x25) & 0x1f;
+ if (msg.len > 16)
+ msg.len = 16;
+
+ if (msg.len) {
+ u8 i;
+
+ for (i = 0; i < msg.len; i++)
+ msg.msg[i] = cec_read(sd, i + 0x15);
+ cec_write(sd, 0x26, 0x01); /* re-enable rx */
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_RX_MSG, &msg);
+ }
+ }
+
+ /* note: the bit order is swapped between 0x4d and 0x4e */
+ cec_irq = ((cec_irq & 0x08) >> 3) | ((cec_irq & 0x04) >> 1) |
+ ((cec_irq & 0x02) << 1) | ((cec_irq & 0x01) << 3);
+ io_write(sd, 0x4e, cec_irq);
+
+ if (handled)
+ *handled = true;
+}
+
+static unsigned adv76xx_cec_available_log_addrs(struct v4l2_subdev *sd)
+{
+ return ADV76XX_MAX_ADDRS;
+}
+
+static int adv76xx_cec_enable(struct v4l2_subdev *sd, bool enable)
+{
+ struct adv76xx_state *state = to_state(sd);
+
+ if (!state->cec_enabled_adap && enable) {
+ cec_write_clr_set(sd, 0x2a, 0x01, 0x01); /* power up cec */
+ cec_write(sd, 0x2c, 0x01); /* cec soft reset */
+ cec_write_clr_set(sd, 0x11, 0x01, 0); /* initially disable tx */
+ /* enabled irqs: */
+ /* tx: ready */
+ /* tx: arbitration lost */
+ /* tx: retry timeout */
+ /* rx: ready */
+ io_write_clr_set(sd, 0x50, 0x0f, 0x0f);
+ cec_write(sd, 0x26, 0x01); /* enable rx */
+ } else if (state->cec_enabled_adap && !enable) {
+ /* disable cec interrupts */
+ io_write_clr_set(sd, 0x50, 0x0f, 0x00);
+ /* disable address mask 1-3 */
+ cec_write_clr_set(sd, 0x27, 0x70, 0x00);
+ /* power down cec section */
+ cec_write_clr_set(sd, 0x2a, 0x01, 0x00);
+ state->cec_valid_addrs = 0;
+ }
+ state->cec_enabled_adap = enable;
+ return 0;
+}
+
+static int adv76xx_cec_log_addr(struct v4l2_subdev *sd, u8 addr)
+{
+ struct adv76xx_state *state = to_state(sd);
+ unsigned i, free_idx = ADV76XX_MAX_ADDRS;
+
+ if (!state->cec_enabled_adap)
+ return -EIO;
+
+ for (i = 0; i < ADV76XX_MAX_ADDRS; i++) {
+ bool is_valid = state->cec_valid_addrs & (1 << i);
+
+ if (free_idx == ADV76XX_MAX_ADDRS && !is_valid)
+ free_idx = i;
+ if (is_valid && state->cec_addr[i] == addr)
+ return 0;
+ }
+ if (i == ADV76XX_MAX_ADDRS) {
+ i = free_idx;
+ if (i == ADV76XX_MAX_ADDRS)
+ return -ENXIO;
+ }
+ state->cec_addr[i] = addr;
+ state->cec_valid_addrs |= 1 << i;
+
+ switch (i) {
+ case 0:
+ /* enable address mask 0 */
+ cec_write_clr_set(sd, 0x27, 0x10, 0x10);
+ /* set address for mask 0 */
+ cec_write_clr_set(sd, 0x28, 0x0f, addr);
+ break;
+ case 1:
+ /* enable address mask 1 */
+ cec_write_clr_set(sd, 0x27, 0x20, 0x20);
+ /* set address for mask 1 */
+ cec_write_clr_set(sd, 0x28, 0xf0, addr << 4);
+ break;
+ case 2:
+ /* enable address mask 2 */
+ cec_write_clr_set(sd, 0x27, 0x40, 0x40);
+ /* set address for mask 1 */
+ cec_write_clr_set(sd, 0x29, 0x0f, addr);
+ break;
+ }
+ return 0;
+}
+
+static int adv76xx_cec_transmit(struct v4l2_subdev *sd, struct cec_msg *msg)
+{
+ u8 len = msg->len;
+ unsigned i;
+
+ if (len == 1)
+ /* allow for one retry for polling */
+ cec_write_clr_set(sd, 0x12, 0x07, 1);
+ else
+ /* allow for three retries */
+ cec_write_clr_set(sd, 0x12, 0x07, 3);
+
+ if (len > 16) {
+ v4l2_err(sd, "%s: len exceeded 16 (%d)\n", __func__, len);
+ return -EINVAL;
+ }
+
+ /* write data */
+ for (i = 0; i < len; i++)
+ cec_write(sd, i, msg->msg[i]);
+
+ /* set length (data + header) */
+ cec_write(sd, 0x10, len);
+ /* start transmit, enable tx */
+ cec_write(sd, 0x11, 0x01);
+ /* For some reason sometimes the
+ * transmit won't start.
+ * Doing it twice seems to help ?
+ */
+ cec_write(sd, 0x11, 0x01);
+ return 0;
+}
+
+static void adv76xx_cec_transmit_timed_out(struct v4l2_subdev *sd)
+{
+ cec_write_clr_set(sd, 0x11, 0x01, 0); /* disable tx */
+}
+
static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
{
struct adv76xx_state *state = to_state(sd);
@@ -1943,6 +2139,9 @@ static int adv76xx_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
*handled = true;
}
+ /* cec */
+ adv76xx_cec_isr(sd, handled);
+
/* tx 5v detect */
tx_5v = io_read(sd, 0x70) & info->cable_det_mask;
if (tx_5v) {
@@ -2250,8 +2449,19 @@ static int adv76xx_log_status(struct v4l2_subdev *sd)
((edid_enabled & 0x02) ? "Yes" : "No"),
((edid_enabled & 0x04) ? "Yes" : "No"),
((edid_enabled & 0x08) ? "Yes" : "No"));
- v4l2_info(sd, "CEC: %s\n", !!(cec_read(sd, 0x2a) & 0x01) ?
+ v4l2_info(sd, "CEC: %s\n", state->cec_enabled_adap ?
"enabled" : "disabled");
+ if (state->cec_enabled_adap) {
+ int i;
+
+ for (i = 0; i < ADV76XX_MAX_ADDRS; i++) {
+ bool is_valid = state->cec_valid_addrs & (1 << i);
+
+ if (is_valid)
+ v4l2_info(sd, "CEC Logical Address: 0x%x\n",
+ state->cec_addr[i]);
+ }
+ }
v4l2_info(sd, "-----Signal status-----\n");
cable_det = info->read_cable_det(sd);
@@ -2368,6 +2578,11 @@ static const struct v4l2_subdev_video_ops adv76xx_video_ops = {
.s_dv_timings = adv76xx_s_dv_timings,
.g_dv_timings = adv76xx_g_dv_timings,
.query_dv_timings = adv76xx_query_dv_timings,
+ .cec_available_log_addrs = adv76xx_cec_available_log_addrs,
+ .cec_enable = adv76xx_cec_enable,
+ .cec_log_addr = adv76xx_cec_log_addr,
+ .cec_transmit = adv76xx_cec_transmit,
+ .cec_transmit_timed_out = adv76xx_cec_transmit_timed_out,
};
static const struct v4l2_subdev_pad_ops adv76xx_pad_ops = {
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 12/15] adv7842: add cec support
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (10 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 11/15] cec: adv7604: add cec support Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 13/15] cec: adv7511: " Hans Verkuil
` (2 subsequent siblings)
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
Add CEC support to the adv7842 driver.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
drivers/media/i2c/adv7842.c | 211 +++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 208 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c
index 4cf79b2..0ef01bd 100644
--- a/drivers/media/i2c/adv7842.c
+++ b/drivers/media/i2c/adv7842.c
@@ -39,6 +39,7 @@
#include <linux/workqueue.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/hdmi.h>
+#include <media/cec.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dv-timings.h>
@@ -78,6 +79,8 @@ MODULE_LICENSE("GPL");
#define ADV7842_OP_SWAP_CB_CR (1 << 0)
+#define ADV7842_MAX_ADDRS (3)
+
/*
**********************************************************************
*
@@ -141,6 +144,10 @@ struct adv7842_state {
struct v4l2_ctrl *free_run_color_ctrl_manual;
struct v4l2_ctrl *free_run_color_ctrl;
struct v4l2_ctrl *rgb_quantization_range_ctrl;
+
+ u8 cec_addr[ADV7842_MAX_ADDRS];
+ u8 cec_valid_addrs;
+ bool cec_enabled_adap;
};
/* Unsupported timings. This device cannot support 720p30. */
@@ -417,9 +424,9 @@ static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
return adv_smbus_write_byte_data(state->i2c_cec, reg, val);
}
-static inline int cec_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
+static inline int cec_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
{
- return cec_write(sd, reg, (cec_read(sd, reg) & mask) | val);
+ return cec_write(sd, reg, (cec_read(sd, reg) & ~mask) | val);
}
static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg)
@@ -2157,6 +2164,185 @@ static void adv7842_irq_enable(struct v4l2_subdev *sd, bool enable)
}
}
+static void adv7842_cec_tx_raw_status(struct v4l2_subdev *sd, u8 tx_raw_status)
+{
+ if ((cec_read(sd, 0x11) & 0x01) == 0) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: tx disabled\n", __func__);
+ return;
+ }
+
+ if (tx_raw_status & 0x02) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: arbitration lost\n",
+ __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_ARB_LOST);
+ return;
+ }
+ if (tx_raw_status & 0x04) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: retry failed\n", __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_RETRY_TIMEOUT);
+ return;
+ }
+ if (tx_raw_status & 0x01) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: ready ok\n", __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_OK);
+ return;
+ }
+}
+
+static void adv7842_cec_isr(struct v4l2_subdev *sd, bool *handled)
+{
+ struct cec_msg msg;
+ u8 cec_irq;
+
+ /* cec controller */
+ cec_irq = io_read(sd, 0x93) & 0x0f;
+ if (!cec_irq)
+ return;
+
+ v4l2_dbg(1, debug, sd, "%s: cec: irq 0x%x\n", __func__, cec_irq);
+ adv7842_cec_tx_raw_status(sd, cec_irq);
+ if (cec_irq & 0x08) {
+ msg.len = cec_read(sd, 0x25) & 0x1f;
+ if (msg.len > 16)
+ msg.len = 16;
+
+ if (msg.len) {
+ u8 i;
+
+ for (i = 0; i < msg.len; i++)
+ msg.msg[i] = cec_read(sd, i + 0x15);
+ cec_write(sd, 0x26, 0x01); /* re-enable rx */
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_RX_MSG, &msg);
+ }
+ }
+
+ io_write(sd, 0x94, cec_irq);
+
+ if (handled)
+ *handled = true;
+}
+
+static unsigned adv7842_cec_available_log_addrs(struct v4l2_subdev *sd)
+{
+ return ADV7842_MAX_ADDRS;
+}
+
+static int adv7842_cec_enable(struct v4l2_subdev *sd, bool enable)
+{
+ struct adv7842_state *state = to_state(sd);
+
+ if (!state->cec_enabled_adap && enable) {
+ cec_write_clr_set(sd, 0x2a, 0x01, 0x01); /* power up cec */
+ cec_write(sd, 0x2c, 0x01); /* cec soft reset */
+ cec_write_clr_set(sd, 0x11, 0x01, 0); /* initially disable tx */
+ /* enabled irqs: */
+ /* tx: ready */
+ /* tx: arbitration lost */
+ /* tx: retry timeout */
+ /* rx: ready */
+ io_write_clr_set(sd, 0x96, 0x0f, 0x0f);
+ cec_write(sd, 0x26, 0x01); /* enable rx */
+ } else if (state->cec_enabled_adap && !enable) {
+ /* disable cec interrupts */
+ io_write_clr_set(sd, 0x96, 0x0f, 0x00);
+ /* disable address mask 1-3 */
+ cec_write_clr_set(sd, 0x27, 0x70, 0x00);
+ /* power down cec section */
+ cec_write_clr_set(sd, 0x2a, 0x01, 0x00);
+ state->cec_valid_addrs = 0;
+ }
+ state->cec_enabled_adap = enable;
+ return 0;
+}
+
+static int adv7842_cec_log_addr(struct v4l2_subdev *sd, u8 addr)
+{
+ struct adv7842_state *state = to_state(sd);
+ unsigned i, free_idx = ADV7842_MAX_ADDRS;
+
+ if (!state->cec_enabled_adap)
+ return -EIO;
+
+ for (i = 0; i < ADV7842_MAX_ADDRS; i++) {
+ bool is_valid = state->cec_valid_addrs & (1 << i);
+
+ if (free_idx == ADV7842_MAX_ADDRS && !is_valid)
+ free_idx = i;
+ if (is_valid && state->cec_addr[i] == addr)
+ return 0;
+ }
+ if (i == ADV7842_MAX_ADDRS) {
+ i = free_idx;
+ if (i == ADV7842_MAX_ADDRS)
+ return -ENXIO;
+ }
+ state->cec_addr[i] = addr;
+ state->cec_valid_addrs |= 1 << i;
+
+ switch (i) {
+ case 0:
+ /* enable address mask 0 */
+ cec_write_clr_set(sd, 0x27, 0x10, 0x10);
+ /* set address for mask 0 */
+ cec_write_clr_set(sd, 0x28, 0x0f, addr);
+ break;
+ case 1:
+ /* enable address mask 1 */
+ cec_write_clr_set(sd, 0x27, 0x20, 0x20);
+ /* set address for mask 1 */
+ cec_write_clr_set(sd, 0x28, 0xf0, addr << 4);
+ break;
+ case 2:
+ /* enable address mask 2 */
+ cec_write_clr_set(sd, 0x27, 0x40, 0x40);
+ /* set address for mask 1 */
+ cec_write_clr_set(sd, 0x29, 0x0f, addr);
+ break;
+ }
+ return 0;
+}
+
+static int adv7842_cec_transmit(struct v4l2_subdev *sd, struct cec_msg *msg)
+{
+ u8 len = msg->len;
+ unsigned i;
+
+ if (len == 1)
+ /* allow for one retry for polling */
+ cec_write_clr_set(sd, 0x12, 0x07, 1);
+ else
+ /* allow for three retries */
+ cec_write_clr_set(sd, 0x12, 0x07, 3);
+
+ if (len > 16) {
+ v4l2_err(sd, "%s: len exceeded 16 (%d)\n", __func__, len);
+ return -EINVAL;
+ }
+
+ /* write data */
+ for (i = 0; i < len; i++)
+ cec_write(sd, i, msg->msg[i]);
+
+ /* set length (data + header) */
+ cec_write(sd, 0x10, len);
+ /* start transmit, enable tx */
+ cec_write(sd, 0x11, 0x01);
+ /* For some reason sometimes the
+ * transmit won't start.
+ * Doing it twice seems to help ?
+ */
+ cec_write(sd, 0x11, 0x01);
+ return 0;
+}
+
+static void adv7842_cec_transmit_timed_out(struct v4l2_subdev *sd)
+{
+ cec_write_clr_set(sd, 0x11, 0x01, 0); /* disable tx */
+}
+
static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
{
struct adv7842_state *state = to_state(sd);
@@ -2229,6 +2415,9 @@ static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
*handled = true;
}
+ /* cec */
+ adv7842_cec_isr(sd, handled);
+
/* tx 5v detect */
if (irq_status[2] & 0x3) {
v4l2_dbg(1, debug, sd, "%s: irq tx_5v\n", __func__);
@@ -2497,8 +2686,19 @@ static int adv7842_cp_log_status(struct v4l2_subdev *sd)
v4l2_info(sd, "HPD A %s, B %s\n",
reg_io_0x21 & 0x02 ? "enabled" : "disabled",
reg_io_0x21 & 0x01 ? "enabled" : "disabled");
- v4l2_info(sd, "CEC %s\n", !!(cec_read(sd, 0x2a) & 0x01) ?
+ v4l2_info(sd, "CEC: %s\n", state->cec_enabled_adap ?
"enabled" : "disabled");
+ if (state->cec_enabled_adap) {
+ int i;
+
+ for (i = 0; i < ADV7842_MAX_ADDRS; i++) {
+ bool is_valid = state->cec_valid_addrs & (1 << i);
+
+ if (is_valid)
+ v4l2_info(sd, "CEC Logical Address: 0x%x\n",
+ state->cec_addr[i]);
+ }
+ }
v4l2_info(sd, "-----Signal status-----\n");
if (state->hdmi_port_a) {
@@ -3030,6 +3230,11 @@ static const struct v4l2_subdev_video_ops adv7842_video_ops = {
.s_dv_timings = adv7842_s_dv_timings,
.g_dv_timings = adv7842_g_dv_timings,
.query_dv_timings = adv7842_query_dv_timings,
+ .cec_available_log_addrs = adv7842_cec_available_log_addrs,
+ .cec_enable = adv7842_cec_enable,
+ .cec_log_addr = adv7842_cec_log_addr,
+ .cec_transmit = adv7842_cec_transmit,
+ .cec_transmit_timed_out = adv7842_cec_transmit_timed_out,
};
static const struct v4l2_subdev_pad_ops adv7842_pad_ops = {
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 13/15] cec: adv7511: add cec support.
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (11 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 12/15] adv7842: " Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-06-29 10:14 ` [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver Hans Verkuil
2015-06-29 10:15 ` [PATCHv7 15/15] cobalt: add cec support Hans Verkuil
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil,
Hans Verkuil
Add CEC support to the adv7511 driver.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
[k.debski@samsung.com: Merged changes from CEC Updates commit by Hans Verkuil]
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
drivers/media/i2c/adv7511.c | 350 +++++++++++++++++++++++++++++++++++++++++++-
include/media/adv7511.h | 6 +-
2 files changed, 345 insertions(+), 11 deletions(-)
diff --git a/drivers/media/i2c/adv7511.c b/drivers/media/i2c/adv7511.c
index 95bcd40..a0166c7 100644
--- a/drivers/media/i2c/adv7511.c
+++ b/drivers/media/i2c/adv7511.c
@@ -33,6 +33,7 @@
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dv-timings.h>
#include <media/adv7511.h>
+#include <media/cec.h>
static int debug;
module_param(debug, int, 0644);
@@ -59,6 +60,8 @@ MODULE_LICENSE("GPL");
#define ADV7511_MIN_PIXELCLOCK 20000000
#define ADV7511_MAX_PIXELCLOCK 225000000
+#define ADV7511_MAX_ADDRS (3)
+
/*
**********************************************************************
*
@@ -90,8 +93,14 @@ struct adv7511_state {
struct v4l2_ctrl_handler hdl;
int chip_revision;
u8 i2c_edid_addr;
- u8 i2c_cec_addr;
u8 i2c_pktmem_addr;
+ u8 i2c_cec_addr;
+
+ struct i2c_client *i2c_cec;
+ u8 cec_addr[ADV7511_MAX_ADDRS];
+ u8 cec_valid_addrs;
+ bool cec_enabled_adap;
+
/* Is the adv7511 powered on? */
bool power_on;
/* Did we receive hotplug and rx-sense signals? */
@@ -225,7 +234,7 @@ static int adv_smbus_read_i2c_block_data(struct i2c_client *client,
return ret;
}
-static inline void adv7511_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf)
+static void adv7511_edid_rd(struct v4l2_subdev *sd, uint16_t len, uint8_t *buf)
{
struct adv7511_state *state = get_adv7511_state(sd);
int i;
@@ -240,6 +249,34 @@ static inline void adv7511_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf)
v4l2_err(sd, "%s: i2c read error\n", __func__);
}
+static inline int adv7511_cec_read(struct v4l2_subdev *sd, u8 reg)
+{
+ struct adv7511_state *state = get_adv7511_state(sd);
+
+ return i2c_smbus_read_byte_data(state->i2c_cec, reg);
+}
+
+static int adv7511_cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
+{
+ struct adv7511_state *state = get_adv7511_state(sd);
+ int ret;
+ int i;
+
+ for (i = 0; i < 3; i++) {
+ ret = i2c_smbus_write_byte_data(state->i2c_cec, reg, val);
+ if (ret == 0)
+ return 0;
+ }
+ v4l2_err(sd, "%s: I2C Write Problem\n", __func__);
+ return ret;
+}
+
+static inline int adv7511_cec_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask,
+ u8 val)
+{
+ return adv7511_cec_write(sd, reg, (adv7511_cec_read(sd, reg) & mask) | val);
+}
+
static int adv7511_pktmem_rd(struct v4l2_subdev *sd, u8 reg)
{
struct adv7511_state *state = get_adv7511_state(sd);
@@ -413,16 +450,28 @@ static const struct v4l2_ctrl_ops adv7511_ctrl_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
static void adv7511_inv_register(struct v4l2_subdev *sd)
{
+ struct adv7511_state *state = get_adv7511_state(sd);
+
v4l2_info(sd, "0x000-0x0ff: Main Map\n");
+ if (state->i2c_cec)
+ v4l2_info(sd, "0x100-0x1ff: CEC Map\n");
}
static int adv7511_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
{
+ struct adv7511_state *state = get_adv7511_state(sd);
+
reg->size = 1;
switch (reg->reg >> 8) {
case 0:
reg->val = adv7511_rd(sd, reg->reg & 0xff);
break;
+ case 1:
+ if (state->i2c_cec) {
+ reg->val = adv7511_cec_read(sd, reg->reg & 0xff);
+ break;
+ }
+ /* fall through */
default:
v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
adv7511_inv_register(sd);
@@ -433,10 +482,18 @@ static int adv7511_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
static int adv7511_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
{
+ struct adv7511_state *state = get_adv7511_state(sd);
+
switch (reg->reg >> 8) {
case 0:
adv7511_wr(sd, reg->reg & 0xff, reg->val & 0xff);
break;
+ case 1:
+ if (state->i2c_cec) {
+ adv7511_cec_write(sd, reg->reg & 0xff, reg->val & 0xff);
+ break;
+ }
+ /* fall through */
default:
v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
adv7511_inv_register(sd);
@@ -524,6 +581,7 @@ static int adv7511_log_status(struct v4l2_subdev *sd)
{
struct adv7511_state *state = get_adv7511_state(sd);
struct adv7511_state_edid *edid = &state->edid;
+ int i;
static const char * const states[] = {
"in reset",
@@ -593,7 +651,23 @@ static int adv7511_log_status(struct v4l2_subdev *sd)
else
v4l2_info(sd, "no timings set\n");
v4l2_info(sd, "i2c edid addr: 0x%x\n", state->i2c_edid_addr);
+
+ if (state->i2c_cec == NULL)
+ return 0;
+
v4l2_info(sd, "i2c cec addr: 0x%x\n", state->i2c_cec_addr);
+
+ v4l2_info(sd, "CEC: %s\n", state->cec_enabled_adap ?
+ "enabled" : "disabled");
+ if (state->cec_enabled_adap) {
+ for (i = 0; i < ADV7511_MAX_ADDRS; i++) {
+ bool is_valid = state->cec_valid_addrs & (1 << i);
+
+ if (is_valid)
+ v4l2_info(sd, "CEC Logical Address: 0x%x\n",
+ state->cec_addr[i]);
+ }
+ }
v4l2_info(sd, "i2c pktmem addr: 0x%x\n", state->i2c_pktmem_addr);
return 0;
}
@@ -651,6 +725,121 @@ static int adv7511_s_power(struct v4l2_subdev *sd, int on)
return true;
}
+static unsigned adv7511_cec_available_log_addrs(struct v4l2_subdev *sd)
+{
+ return ADV7511_MAX_ADDRS;
+}
+
+static int adv7511_cec_enable(struct v4l2_subdev *sd, bool enable)
+{
+ struct adv7511_state *state = get_adv7511_state(sd);
+
+ if (state->i2c_cec == NULL)
+ return -EIO;
+
+ if (!state->cec_enabled_adap && enable) {
+ /* power up cec section */
+ adv7511_cec_write_and_or(sd, 0x4e, 0xfc, 0x01);
+ /* legacy mode and clear all rx buffers */
+ adv7511_cec_write(sd, 0x4a, 0x07);
+ adv7511_cec_write(sd, 0x4a, 0);
+ adv7511_cec_write_and_or(sd, 0x11, 0xfe, 0); /* initially disable tx */
+ /* enabled irqs: */
+ /* tx: ready */
+ /* tx: arbitration lost */
+ /* tx: retry timeout */
+ /* rx: ready 1 */
+ adv7511_wr_and_or(sd, 0x95, 0xc0, 0x39);
+ } else if (state->cec_enabled_adap && !enable) {
+ adv7511_wr_and_or(sd, 0x95, 0xc0, 0x00);
+ /* disable address mask 1-3 */
+ adv7511_cec_write_and_or(sd, 0x4b, 0x8f, 0x00);
+ /* power down cec section */
+ adv7511_cec_write_and_or(sd, 0x4e, 0xfc, 0x00);
+ state->cec_valid_addrs = 0;
+ }
+ state->cec_enabled_adap = enable;
+ return 0;
+}
+
+static int adv7511_cec_log_addr(struct v4l2_subdev *sd, u8 addr)
+{
+ struct adv7511_state *state = get_adv7511_state(sd);
+ unsigned i, free_idx = ADV7511_MAX_ADDRS;
+
+ if (!state->cec_enabled_adap)
+ return -EIO;
+
+ for (i = 0; i < ADV7511_MAX_ADDRS; i++) {
+ bool is_valid = state->cec_valid_addrs & (1 << i);
+
+ if (free_idx == ADV7511_MAX_ADDRS && !is_valid)
+ free_idx = i;
+ if (is_valid && state->cec_addr[i] == addr)
+ return 0;
+ }
+ if (i == ADV7511_MAX_ADDRS) {
+ i = free_idx;
+ if (i == ADV7511_MAX_ADDRS)
+ return -ENXIO;
+ }
+ state->cec_addr[i] = addr;
+ state->cec_valid_addrs |= 1 << i;
+
+ switch (i) {
+ case 0:
+ /* enable address mask 0 */
+ adv7511_cec_write_and_or(sd, 0x4b, 0xef, 0x10);
+ /* set address for mask 0 */
+ adv7511_cec_write_and_or(sd, 0x4c, 0xf0, addr);
+ break;
+ case 1:
+ /* enable address mask 1 */
+ adv7511_cec_write_and_or(sd, 0x4b, 0xdf, 0x20);
+ /* set address for mask 1 */
+ adv7511_cec_write_and_or(sd, 0x4c, 0x0f, addr << 4);
+ break;
+ case 2:
+ /* enable address mask 2 */
+ adv7511_cec_write_and_or(sd, 0x4b, 0xbf, 0x40);
+ /* set address for mask 1 */
+ adv7511_cec_write_and_or(sd, 0x4d, 0xf0, addr);
+ break;
+ }
+ return 0;
+}
+
+static int adv7511_cec_transmit(struct v4l2_subdev *sd, struct cec_msg *msg)
+{
+ u8 len = msg->len;
+ unsigned i;
+
+ v4l2_dbg(1, debug, sd, "%s: len %d\n", __func__, len);
+
+ if (len > 16) {
+ v4l2_err(sd, "%s: len exceeded 16 (%d)\n", __func__, len);
+ return -EINVAL;
+ }
+
+ /* blocking, clear cec tx irq status */
+ adv7511_wr_and_or(sd, 0x97, 0xc7, 0x38);
+
+ /* write data */
+ for (i = 0; i < len; i++)
+ adv7511_cec_write(sd, i, msg->msg[i]);
+
+ /* set length (data + header) */
+ adv7511_cec_write(sd, 0x10, len);
+ /* start transmit, enable tx */
+ adv7511_cec_write(sd, 0x11, 0x01);
+ return 0;
+}
+
+static void adv7511_cec_transmit_timed_out(struct v4l2_subdev *sd)
+{
+ adv7511_cec_write_and_or(sd, 0x11, 0xfe, 0); /* disable tx */
+}
+
/* Enable interrupts */
static void adv7511_set_isr(struct v4l2_subdev *sd, bool enable)
{
@@ -685,24 +874,82 @@ static void adv7511_set_isr(struct v4l2_subdev *sd, bool enable)
v4l2_err(sd, "Could not set interrupts: hw failure?\n");
}
+static void adv_cec_tx_raw_status(struct v4l2_subdev *sd, u8 tx_raw_status)
+{
+ if ((adv7511_cec_read(sd, 0x11) & 0x01) == 0) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: tx disabled\n", __func__);
+ return;
+ }
+
+ if (tx_raw_status & 0x10) {
+ v4l2_dbg(1, debug, sd,
+ "%s: tx raw: arbitration lost\n", __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_ARB_LOST);
+ return;
+ }
+ if (tx_raw_status & 0x08) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: retry failed\n", __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_RETRY_TIMEOUT);
+ return;
+ }
+ if (tx_raw_status & 0x20) {
+ v4l2_dbg(1, debug, sd, "%s: tx raw: ready ok\n", __func__);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_TX_DONE,
+ (void *)CEC_TX_STATUS_OK);
+ return;
+ }
+}
+
/* Interrupt handler */
static int adv7511_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
{
u8 irq_status;
+ u8 cec_irq;
/* disable interrupts to prevent a race condition */
adv7511_set_isr(sd, false);
irq_status = adv7511_rd(sd, 0x96);
+ cec_irq = adv7511_rd(sd, 0x97);
/* clear detected interrupts */
adv7511_wr(sd, 0x96, irq_status);
+ adv7511_wr(sd, 0x97, cec_irq);
- v4l2_dbg(1, debug, sd, "%s: irq 0x%x\n", __func__, irq_status);
+ v4l2_dbg(1, debug, sd, "%s: irq 0x%x, cec-irq 0x%x\n", __func__,
+ irq_status, cec_irq);
if (irq_status & (MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT))
adv7511_check_monitor_present_status(sd);
if (irq_status & MASK_ADV7511_EDID_RDY_INT)
adv7511_check_edid_status(sd);
+ if (cec_irq & 0x38)
+ adv_cec_tx_raw_status(sd, cec_irq);
+
+ if (cec_irq & 1) {
+ struct cec_msg msg;
+
+ msg.len = adv7511_cec_read(sd, 0x25) & 0x1f;
+
+ v4l2_dbg(1, debug, sd, "%s: cec msg len %d\n", __func__,
+ msg.len);
+
+ if (msg.len > 16)
+ msg.len = 16;
+
+ if (msg.len) {
+ u8 i;
+
+ for (i = 0; i < msg.len; i++)
+ msg.msg[i] = adv7511_cec_read(sd, i + 0x15);
+
+ adv7511_cec_write(sd, 0x4a, 1); /* toggle to re-enable rx 1 */
+ adv7511_cec_write(sd, 0x4a, 0);
+ v4l2_subdev_notify(sd, V4L2_SUBDEV_CEC_RX_MSG, &msg);
+ }
+ }
+
/* enable interrupts */
adv7511_set_isr(sd, true);
@@ -806,6 +1053,11 @@ static const struct v4l2_subdev_video_ops adv7511_video_ops = {
.s_stream = adv7511_s_stream,
.s_dv_timings = adv7511_s_dv_timings,
.g_dv_timings = adv7511_g_dv_timings,
+ .cec_available_log_addrs = adv7511_cec_available_log_addrs,
+ .cec_enable = adv7511_cec_enable,
+ .cec_log_addr = adv7511_cec_log_addr,
+ .cec_transmit = adv7511_cec_transmit,
+ .cec_transmit_timed_out = adv7511_cec_transmit_timed_out,
};
/* ------------------------------ AUDIO OPS ------------------------------ */
@@ -1193,6 +1445,7 @@ static void adv7511_edid_handler(struct work_struct *work)
/* We failed to read the EDID, so send an event for this. */
ed.present = false;
ed.segment = adv7511_rd(sd, 0xc4);
+ ed.phys_addr = 0xffff;
v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__);
}
@@ -1333,10 +1586,39 @@ static bool edid_verify_header(struct v4l2_subdev *sd, u32 segment)
return !memcmp(data, hdmi_header, sizeof(hdmi_header));
}
+static int get_edid_spa_location(const u8 *edid)
+{
+ u8 d;
+
+ if ((edid[0x7e] != 1) ||
+ (edid[0x80] != 0x02) ||
+ (edid[0x81] != 0x03)) {
+ return -1;
+ }
+
+ /* search Vendor Specific Data Block (tag 3) */
+ d = edid[0x82] & 0x7f;
+ if (d > 4) {
+ int i = 0x84;
+ int end = 0x80 + d;
+
+ do {
+ u8 tag = edid[i] >> 5;
+ u8 len = edid[i] & 0x1f;
+
+ if ((tag == 3) && (len >= 5))
+ return i + 4;
+ i += len + 1;
+ } while (i < end);
+ }
+ return -1;
+}
+
static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
{
struct adv7511_state *state = get_adv7511_state(sd);
u8 edidRdy = adv7511_rd(sd, 0xc5);
+ int offset;
v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n",
__func__, EDID_MAX_RETRIES - state->edid.read_retries);
@@ -1382,6 +1664,12 @@ static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
v4l2_dbg(1, debug, sd, "%s: edid complete with %d segment(s)\n", __func__, state->edid.segments);
state->edid.complete = true;
+ offset = get_edid_spa_location(state->edid.data);
+ if (offset > 0)
+ ed.phys_addr = (state->edid.data[offset] << 8) |
+ state->edid.data[offset + 1];
+ else
+ ed.phys_addr = 0xffff;
/* report when we have all segments
but report only for segment 0
@@ -1403,11 +1691,14 @@ static void adv7511_init_setup(struct v4l2_subdev *sd)
{
struct adv7511_state *state = get_adv7511_state(sd);
struct adv7511_state_edid *edid = &state->edid;
+ u32 cec_clk = state->pdata.cec_clk;
+ u8 ratio;
v4l2_dbg(1, debug, sd, "%s\n", __func__);
/* clear all interrupts */
adv7511_wr(sd, 0x96, 0xff);
+ adv7511_wr(sd, 0x97, 0xff);
/*
* Stop HPD from resetting a lot of registers.
* It might leave the chip in a partly un-initialized state,
@@ -1419,6 +1710,25 @@ static void adv7511_init_setup(struct v4l2_subdev *sd)
adv7511_set_isr(sd, false);
adv7511_s_stream(sd, false);
adv7511_s_audio_stream(sd, false);
+
+ if (state->i2c_cec == NULL)
+ return;
+
+ v4l2_dbg(1, debug, sd, "%s: cec_clk %d\n", __func__, cec_clk);
+
+ /* cec soft reset */
+ adv7511_cec_write(sd, 0x50, 0x01);
+ adv7511_cec_write(sd, 0x50, 0x00);
+
+ /* legacy mode */
+ adv7511_cec_write(sd, 0x4a, 0x00);
+
+ if (cec_clk % 750000 != 0)
+ v4l2_err(sd, "%s: cec_clk %d, not multiple of 750 Khz\n",
+ __func__, cec_clk);
+
+ ratio = (cec_clk / 750000) - 1;
+ adv7511_cec_write(sd, 0x4e, ratio << 2);
}
static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *id)
@@ -1495,26 +1805,49 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *
chip_id[0] = adv7511_rd(sd, 0xf5);
chip_id[1] = adv7511_rd(sd, 0xf6);
if (chip_id[0] != 0x75 || chip_id[1] != 0x11) {
- v4l2_err(sd, "chip_id != 0x7511, read 0x%02x%02x\n", chip_id[0], chip_id[1]);
+ v4l2_err(sd, "chip_id != 0x7511, read 0x%02x%02x\n", chip_id[0],
+ chip_id[1]);
err = -EIO;
goto err_entity;
}
- state->i2c_edid = i2c_new_dummy(client->adapter, state->i2c_edid_addr >> 1);
+ state->i2c_edid = i2c_new_dummy(client->adapter,
+ state->i2c_edid_addr >> 1);
if (state->i2c_edid == NULL) {
v4l2_err(sd, "failed to register edid i2c client\n");
err = -ENOMEM;
goto err_entity;
}
+ adv7511_wr(sd, 0xe1, state->i2c_cec_addr);
+ if (state->pdata.cec_clk < 3000000 ||
+ state->pdata.cec_clk > 100000000) {
+ v4l2_err(sd, "%s: cec_clk %u outside range, disabling cec\n",
+ __func__, state->pdata.cec_clk);
+ state->pdata.cec_clk = 0;
+ }
+
+ if (state->pdata.cec_clk) {
+ state->i2c_cec = i2c_new_dummy(client->adapter,
+ (state->i2c_cec_addr>>1));
+ if (state->i2c_cec == NULL) {
+ v4l2_err(sd, "failed to register cec i2c client\n");
+ goto err_unreg_edid;
+ }
+ adv7511_wr(sd, 0xe2, 0x00); /* power up cec section */
+ } else {
+ adv7511_wr(sd, 0xe2, 0x01); /* power down cec section */
+ }
+
state->i2c_pktmem = i2c_new_dummy(client->adapter, state->i2c_pktmem_addr >> 1);
if (state->i2c_pktmem == NULL) {
v4l2_err(sd, "failed to register pktmem i2c client\n");
err = -ENOMEM;
- goto err_unreg_edid;
+ goto err_unreg_cec;
}
adv7511_wr(sd, 0xe2, 0x01); /* power down cec section */
+
state->work_queue = create_singlethread_workqueue(sd->name);
if (state->work_queue == NULL) {
v4l2_err(sd, "could not create workqueue\n");
@@ -1534,6 +1867,9 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *
err_unreg_pktmem:
i2c_unregister_device(state->i2c_pktmem);
+err_unreg_cec:
+ if (state->i2c_cec)
+ i2c_unregister_device(state->i2c_cec);
err_unreg_edid:
i2c_unregister_device(state->i2c_edid);
err_entity:
@@ -1558,6 +1894,8 @@ static int adv7511_remove(struct i2c_client *client)
adv7511_init_setup(sd);
cancel_delayed_work(&state->edid_handler);
i2c_unregister_device(state->i2c_edid);
+ if (state->i2c_cec)
+ i2c_unregister_device(state->i2c_cec);
i2c_unregister_device(state->i2c_pktmem);
destroy_workqueue(state->work_queue);
v4l2_device_unregister_subdev(sd);
diff --git a/include/media/adv7511.h b/include/media/adv7511.h
index d83b91d..61c3d71 100644
--- a/include/media/adv7511.h
+++ b/include/media/adv7511.h
@@ -32,11 +32,7 @@ struct adv7511_monitor_detect {
struct adv7511_edid_detect {
int present;
int segment;
-};
-
-struct adv7511_cec_arg {
- void *arg;
- u32 f_flags;
+ uint16_t phys_addr;
};
struct adv7511_platform_data {
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (12 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 13/15] cec: adv7511: " Hans Verkuil
@ 2015-06-29 10:14 ` Hans Verkuil
2015-07-16 13:09 ` Hans Verkuil
2015-06-29 10:15 ` [PATCHv7 15/15] cobalt: add cec support Hans Verkuil
14 siblings, 1 reply; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:14 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
From: Kamil Debski <kamil@wypas.org>
Add CEC interface driver present in the Samsung Exynos range of
SoCs.
The following files were based on work by SangPil Moon:
- exynos_hdmi_cec.h
- exynos_hdmi_cecctl.c
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
.../devicetree/bindings/media/s5p-cec.txt | 31 +++
drivers/media/platform/Kconfig | 10 +
drivers/media/platform/Makefile | 1 +
drivers/media/platform/s5p-cec/Makefile | 2 +
drivers/media/platform/s5p-cec/exynos_hdmi_cec.h | 37 +++
.../media/platform/s5p-cec/exynos_hdmi_cecctrl.c | 208 +++++++++++++++
drivers/media/platform/s5p-cec/regs-cec.h | 96 +++++++
drivers/media/platform/s5p-cec/s5p_cec.c | 283 +++++++++++++++++++++
drivers/media/platform/s5p-cec/s5p_cec.h | 76 ++++++
9 files changed, 744 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/s5p-cec.txt
create mode 100644 drivers/media/platform/s5p-cec/Makefile
create mode 100644 drivers/media/platform/s5p-cec/exynos_hdmi_cec.h
create mode 100644 drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c
create mode 100644 drivers/media/platform/s5p-cec/regs-cec.h
create mode 100644 drivers/media/platform/s5p-cec/s5p_cec.c
create mode 100644 drivers/media/platform/s5p-cec/s5p_cec.h
diff --git a/Documentation/devicetree/bindings/media/s5p-cec.txt b/Documentation/devicetree/bindings/media/s5p-cec.txt
new file mode 100644
index 0000000..da63a4c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/s5p-cec.txt
@@ -0,0 +1,31 @@
+* Samsung HDMI CEC driver
+
+The HDMI CEC module is present is Samsung SoCs and its purpose is to
+handle communication between HDMI connected devices over the CEC bus.
+
+Required properties:
+ - compatible : value should be follwoing
+ "samsung,s5p-cec"
+
+ - reg : Physical base address of the IP registers and length of memory
+ mapped region.
+
+ - interrupts : HDMI CEC interrupt number to the CPU.
+ - clocks : from common clock binding: handle to HDMI CEC clock.
+ - clock-names : from common clock binding: must contain "hdmicec",
+ corresponding to entry in the clocks property.
+ - samsung,syscon-phandle - phandle to the PMU system controller
+
+Example:
+
+hdmicec: cec@100B0000 {
+ compatible = "samsung,s5p-cec";
+ reg = <0x100B0000 0x200>;
+ interrupts = <0 114 0>;
+ clocks = <&clock CLK_HDMI_CEC>;
+ clock-names = "hdmicec";
+ samsung,syscon-phandle = <&pmu_system_controller>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&hdmi_cec>;
+ status = "okay";
+};
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 4776a8c..d3843fc 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -157,6 +157,16 @@ config VIDEO_MEM2MEM_DEINTERLACE
help
Generic deinterlacing V4L2 driver.
+config VIDEO_SAMSUNG_S5P_CEC
+ tristate "Samsung S5P CEC driver"
+ depends on CEC && VIDEO_DEV && VIDEO_V4L2 && (PLAT_S5P || ARCH_EXYNOS)
+ default n
+ ---help---
+ This is a driver for Samsung S5P HDMI CEC interface. It uses the
+ generic CEC framework interface.
+ CEC bus is present in the HDMI connector and enables communication
+ between compatible devices.
+
config VIDEO_SAMSUNG_S5P_G2D
tristate "Samsung S5P and EXYNOS4 G2D 2d graphics accelerator driver"
depends on VIDEO_DEV && VIDEO_V4L2
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index 114f9ab..95dd78d 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_VIDEO_MEM2MEM_DEINTERLACE) += m2m-deinterlace.o
obj-$(CONFIG_VIDEO_S3C_CAMIF) += s3c-camif/
obj-$(CONFIG_VIDEO_SAMSUNG_EXYNOS4_IS) += exynos4-is/
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_CEC) += s5p-cec/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG) += s5p-jpeg/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_MFC) += s5p-mfc/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_TV) += s5p-tv/
diff --git a/drivers/media/platform/s5p-cec/Makefile b/drivers/media/platform/s5p-cec/Makefile
new file mode 100644
index 0000000..0e2cf45
--- /dev/null
+++ b/drivers/media/platform/s5p-cec/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_CEC) += s5p-cec.o
+s5p-cec-y += s5p_cec.o exynos_hdmi_cecctrl.o
diff --git a/drivers/media/platform/s5p-cec/exynos_hdmi_cec.h b/drivers/media/platform/s5p-cec/exynos_hdmi_cec.h
new file mode 100644
index 0000000..d008695
--- /dev/null
+++ b/drivers/media/platform/s5p-cec/exynos_hdmi_cec.h
@@ -0,0 +1,37 @@
+/* drivers/media/platform/s5p-cec/exynos_hdmi_cec.h
+ *
+ * Copyright (c) 2010, 2014 Samsung Electronics
+ * http://www.samsung.com/
+ *
+ * Header file for interface of Samsung Exynos hdmi cec hardware
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _EXYNOS_HDMI_CEC_H_
+#define _EXYNOS_HDMI_CEC_H_ __FILE__
+
+#include <linux/regmap.h>
+#include <linux/miscdevice.h>
+#include "s5p_cec.h"
+
+void s5p_cec_set_divider(struct s5p_cec_dev *cec);
+void s5p_cec_enable_rx(struct s5p_cec_dev *cec);
+void s5p_cec_mask_rx_interrupts(struct s5p_cec_dev *cec);
+void s5p_cec_unmask_rx_interrupts(struct s5p_cec_dev *cec);
+void s5p_cec_mask_tx_interrupts(struct s5p_cec_dev *cec);
+void s5p_cec_unmask_tx_interrupts(struct s5p_cec_dev *cec);
+void s5p_cec_reset(struct s5p_cec_dev *cec);
+void s5p_cec_tx_reset(struct s5p_cec_dev *cec);
+void s5p_cec_rx_reset(struct s5p_cec_dev *cec);
+void s5p_cec_threshold(struct s5p_cec_dev *cec);
+void s5p_cec_copy_packet(struct s5p_cec_dev *cec, char *data, size_t count);
+void s5p_cec_set_addr(struct s5p_cec_dev *cec, u32 addr);
+u32 s5p_cec_get_status(struct s5p_cec_dev *cec);
+void s5p_clr_pending_tx(struct s5p_cec_dev *cec);
+void s5p_clr_pending_rx(struct s5p_cec_dev *cec);
+void s5p_cec_get_rx_buf(struct s5p_cec_dev *cec, u32 size, u8 *buffer);
+
+#endif /* _EXYNOS_HDMI_CEC_H_ */
diff --git a/drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c b/drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c
new file mode 100644
index 0000000..134e50b
--- /dev/null
+++ b/drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c
@@ -0,0 +1,208 @@
+/* drivers/media/platform/s5p-cec/exynos_hdmi_cecctrl.c
+ *
+ * Copyright (c) 2009, 2014 Samsung Electronics
+ * http://www.samsung.com/
+ *
+ * cec ftn file for Samsung TVOUT driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/io.h>
+#include <linux/device.h>
+
+#include "exynos_hdmi_cec.h"
+#include "regs-cec.h"
+
+#define S5P_HDMI_FIN 24000000
+#define CEC_DIV_RATIO 320000
+
+#define CEC_MESSAGE_BROADCAST_MASK 0x0F
+#define CEC_MESSAGE_BROADCAST 0x0F
+#define CEC_FILTER_THRESHOLD 0x15
+
+void s5p_cec_set_divider(struct s5p_cec_dev *cec)
+{
+ u32 div_ratio, div_val;
+ unsigned int reg;
+
+ div_ratio = S5P_HDMI_FIN / CEC_DIV_RATIO - 1;
+
+ if (regmap_read(cec->pmu, EXYNOS_HDMI_PHY_CONTROL, ®)) {
+ dev_err(cec->dev, "failed to read phy control\n");
+ return;
+ }
+
+ reg = (reg & ~(0x3FF << 16)) | (div_ratio << 16);
+
+ if (regmap_write(cec->pmu, EXYNOS_HDMI_PHY_CONTROL, reg)) {
+ dev_err(cec->dev, "failed to write phy control\n");
+ return;
+ }
+
+ div_val = CEC_DIV_RATIO * 0.00005 - 1;
+
+ writeb(0x0, cec->reg + S5P_CEC_DIVISOR_3);
+ writeb(0x0, cec->reg + S5P_CEC_DIVISOR_2);
+ writeb(0x0, cec->reg + S5P_CEC_DIVISOR_1);
+ writeb(div_val, cec->reg + S5P_CEC_DIVISOR_0);
+}
+
+void s5p_cec_enable_rx(struct s5p_cec_dev *cec)
+{
+ u8 reg;
+
+ reg = readb(cec->reg + S5P_CEC_RX_CTRL);
+ reg |= S5P_CEC_RX_CTRL_ENABLE;
+ writeb(reg, cec->reg + S5P_CEC_RX_CTRL);
+}
+
+void s5p_cec_mask_rx_interrupts(struct s5p_cec_dev *cec)
+{
+ u8 reg;
+
+ reg = readb(cec->reg + S5P_CEC_IRQ_MASK);
+ reg |= S5P_CEC_IRQ_RX_DONE;
+ reg |= S5P_CEC_IRQ_RX_ERROR;
+ writeb(reg, cec->reg + S5P_CEC_IRQ_MASK);
+}
+
+void s5p_cec_unmask_rx_interrupts(struct s5p_cec_dev *cec)
+{
+ u8 reg;
+
+ reg = readb(cec->reg + S5P_CEC_IRQ_MASK);
+ reg &= ~S5P_CEC_IRQ_RX_DONE;
+ reg &= ~S5P_CEC_IRQ_RX_ERROR;
+ writeb(reg, cec->reg + S5P_CEC_IRQ_MASK);
+}
+
+void s5p_cec_mask_tx_interrupts(struct s5p_cec_dev *cec)
+{
+ u8 reg;
+
+ reg = readb(cec->reg + S5P_CEC_IRQ_MASK);
+ reg |= S5P_CEC_IRQ_TX_DONE;
+ reg |= S5P_CEC_IRQ_TX_ERROR;
+ writeb(reg, cec->reg + S5P_CEC_IRQ_MASK);
+
+}
+
+void s5p_cec_unmask_tx_interrupts(struct s5p_cec_dev *cec)
+{
+ u8 reg;
+
+ reg = readb(cec->reg + S5P_CEC_IRQ_MASK);
+ reg &= ~S5P_CEC_IRQ_TX_DONE;
+ reg &= ~S5P_CEC_IRQ_TX_ERROR;
+ writeb(reg, cec->reg + S5P_CEC_IRQ_MASK);
+}
+
+void s5p_cec_reset(struct s5p_cec_dev *cec)
+{
+ u8 reg;
+
+ writeb(S5P_CEC_RX_CTRL_RESET, cec->reg + S5P_CEC_RX_CTRL);
+ writeb(S5P_CEC_TX_CTRL_RESET, cec->reg + S5P_CEC_TX_CTRL);
+
+ reg = readb(cec->reg + 0xc4);
+ reg &= ~0x1;
+ writeb(reg, cec->reg + 0xc4);
+}
+
+void s5p_cec_tx_reset(struct s5p_cec_dev *cec)
+{
+ writeb(S5P_CEC_TX_CTRL_RESET, cec->reg + S5P_CEC_TX_CTRL);
+}
+
+void s5p_cec_rx_reset(struct s5p_cec_dev *cec)
+{
+ u8 reg;
+
+ writeb(S5P_CEC_RX_CTRL_RESET, cec->reg + S5P_CEC_RX_CTRL);
+
+ reg = readb(cec->reg + 0xc4);
+ reg &= ~0x1;
+ writeb(reg, cec->reg + 0xc4);
+}
+
+void s5p_cec_threshold(struct s5p_cec_dev *cec)
+{
+ writeb(CEC_FILTER_THRESHOLD, cec->reg + S5P_CEC_RX_FILTER_TH);
+ writeb(0, cec->reg + S5P_CEC_RX_FILTER_CTRL);
+}
+
+void s5p_cec_copy_packet(struct s5p_cec_dev *cec, char *data, size_t count)
+{
+ char debug[40];
+ int i = 0;
+ u8 reg;
+
+ while (i < count) {
+ writeb(data[i], cec->reg + (S5P_CEC_TX_BUFF0 + (i * 4)));
+ sprintf(debug + i * 2, "%02x ", data[i]);
+ i++;
+ }
+
+ writeb(count, cec->reg + S5P_CEC_TX_BYTES);
+ reg = readb(cec->reg + S5P_CEC_TX_CTRL);
+ reg |= S5P_CEC_TX_CTRL_START;
+
+ if ((data[0] & CEC_MESSAGE_BROADCAST_MASK) == CEC_MESSAGE_BROADCAST) {
+ dev_dbg(cec->dev, "Broadcast");
+ reg |= S5P_CEC_TX_CTRL_BCAST;
+ } else {
+ dev_dbg(cec->dev, "No Broadcast");
+ reg &= ~S5P_CEC_TX_CTRL_BCAST;
+ }
+
+ reg |= 0x50;
+ writeb(reg, cec->reg + S5P_CEC_TX_CTRL);
+ dev_dbg(cec->dev, "cec-tx: cec count(%d): %s", count, debug);
+}
+
+void s5p_cec_set_addr(struct s5p_cec_dev *cec, u32 addr)
+{
+ writeb(addr & 0x0F, cec->reg + S5P_CEC_LOGIC_ADDR);
+}
+
+u32 s5p_cec_get_status(struct s5p_cec_dev *cec)
+{
+ u32 status = 0;
+
+ status = readb(cec->reg + S5P_CEC_STATUS_0);
+ status |= readb(cec->reg + S5P_CEC_STATUS_1) << 8;
+ status |= readb(cec->reg + S5P_CEC_STATUS_2) << 16;
+ status |= readb(cec->reg + S5P_CEC_STATUS_3) << 24;
+
+ dev_dbg(cec->dev, "status = 0x%x!\n", status);
+
+ return status;
+}
+
+void s5p_clr_pending_tx(struct s5p_cec_dev *cec)
+{
+ writeb(S5P_CEC_IRQ_TX_DONE | S5P_CEC_IRQ_TX_ERROR,
+ cec->reg + S5P_CEC_IRQ_CLEAR);
+}
+
+void s5p_clr_pending_rx(struct s5p_cec_dev *cec)
+{
+ writeb(S5P_CEC_IRQ_RX_DONE | S5P_CEC_IRQ_RX_ERROR,
+ cec->reg + S5P_CEC_IRQ_CLEAR);
+}
+
+void s5p_cec_get_rx_buf(struct s5p_cec_dev *cec, u32 size, u8 *buffer)
+{
+ u32 i = 0;
+ char debug[40];
+
+ while (i < size) {
+ buffer[i] = readb(cec->reg + S5P_CEC_RX_BUFF0 + (i * 4));
+ sprintf(debug + i * 2, "%02x ", buffer[i]);
+ i++;
+ }
+ dev_dbg(cec->dev, "cec-rx: cec size(%d): %s", size, debug);
+}
diff --git a/drivers/media/platform/s5p-cec/regs-cec.h b/drivers/media/platform/s5p-cec/regs-cec.h
new file mode 100644
index 0000000..b2e7e12
--- /dev/null
+++ b/drivers/media/platform/s5p-cec/regs-cec.h
@@ -0,0 +1,96 @@
+/* drivers/media/platform/s5p-cec/regs-cec.h
+ *
+ * Copyright (c) 2010 Samsung Electronics
+ * http://www.samsung.com/
+ *
+ * register header file for Samsung TVOUT driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __EXYNOS_REGS__H
+#define __EXYNOS_REGS__H
+
+/*
+ * Register part
+ */
+#define S5P_CEC_STATUS_0 (0x0000)
+#define S5P_CEC_STATUS_1 (0x0004)
+#define S5P_CEC_STATUS_2 (0x0008)
+#define S5P_CEC_STATUS_3 (0x000C)
+#define S5P_CEC_IRQ_MASK (0x0010)
+#define S5P_CEC_IRQ_CLEAR (0x0014)
+#define S5P_CEC_LOGIC_ADDR (0x0020)
+#define S5P_CEC_DIVISOR_0 (0x0030)
+#define S5P_CEC_DIVISOR_1 (0x0034)
+#define S5P_CEC_DIVISOR_2 (0x0038)
+#define S5P_CEC_DIVISOR_3 (0x003C)
+
+#define S5P_CEC_TX_CTRL (0x0040)
+#define S5P_CEC_TX_BYTES (0x0044)
+#define S5P_CEC_TX_STAT0 (0x0060)
+#define S5P_CEC_TX_STAT1 (0x0064)
+#define S5P_CEC_TX_BUFF0 (0x0080)
+#define S5P_CEC_TX_BUFF1 (0x0084)
+#define S5P_CEC_TX_BUFF2 (0x0088)
+#define S5P_CEC_TX_BUFF3 (0x008C)
+#define S5P_CEC_TX_BUFF4 (0x0090)
+#define S5P_CEC_TX_BUFF5 (0x0094)
+#define S5P_CEC_TX_BUFF6 (0x0098)
+#define S5P_CEC_TX_BUFF7 (0x009C)
+#define S5P_CEC_TX_BUFF8 (0x00A0)
+#define S5P_CEC_TX_BUFF9 (0x00A4)
+#define S5P_CEC_TX_BUFF10 (0x00A8)
+#define S5P_CEC_TX_BUFF11 (0x00AC)
+#define S5P_CEC_TX_BUFF12 (0x00B0)
+#define S5P_CEC_TX_BUFF13 (0x00B4)
+#define S5P_CEC_TX_BUFF14 (0x00B8)
+#define S5P_CEC_TX_BUFF15 (0x00BC)
+
+#define S5P_CEC_RX_CTRL (0x00C0)
+#define S5P_CEC_RX_STAT0 (0x00E0)
+#define S5P_CEC_RX_STAT1 (0x00E4)
+#define S5P_CEC_RX_BUFF0 (0x0100)
+#define S5P_CEC_RX_BUFF1 (0x0104)
+#define S5P_CEC_RX_BUFF2 (0x0108)
+#define S5P_CEC_RX_BUFF3 (0x010C)
+#define S5P_CEC_RX_BUFF4 (0x0110)
+#define S5P_CEC_RX_BUFF5 (0x0114)
+#define S5P_CEC_RX_BUFF6 (0x0118)
+#define S5P_CEC_RX_BUFF7 (0x011C)
+#define S5P_CEC_RX_BUFF8 (0x0120)
+#define S5P_CEC_RX_BUFF9 (0x0124)
+#define S5P_CEC_RX_BUFF10 (0x0128)
+#define S5P_CEC_RX_BUFF11 (0x012C)
+#define S5P_CEC_RX_BUFF12 (0x0130)
+#define S5P_CEC_RX_BUFF13 (0x0134)
+#define S5P_CEC_RX_BUFF14 (0x0138)
+#define S5P_CEC_RX_BUFF15 (0x013C)
+
+#define S5P_CEC_RX_FILTER_CTRL (0x0180)
+#define S5P_CEC_RX_FILTER_TH (0x0184)
+
+/*
+ * Bit definition part
+ */
+#define S5P_CEC_IRQ_TX_DONE (1<<0)
+#define S5P_CEC_IRQ_TX_ERROR (1<<1)
+#define S5P_CEC_IRQ_RX_DONE (1<<4)
+#define S5P_CEC_IRQ_RX_ERROR (1<<5)
+
+#define S5P_CEC_TX_CTRL_START (1<<0)
+#define S5P_CEC_TX_CTRL_BCAST (1<<1)
+#define S5P_CEC_TX_CTRL_RETRY (0x04<<4)
+#define S5P_CEC_TX_CTRL_RESET (1<<7)
+
+#define S5P_CEC_RX_CTRL_ENABLE (1<<0)
+#define S5P_CEC_RX_CTRL_RESET (1<<7)
+
+#define S5P_CEC_LOGIC_ADDR_MASK (0xF)
+
+/* PMU Registers for PHY */
+#define EXYNOS_HDMI_PHY_CONTROL 0x700
+
+#endif /* __EXYNOS_REGS__H */
diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c b/drivers/media/platform/s5p-cec/s5p_cec.c
new file mode 100644
index 0000000..0f16d00
--- /dev/null
+++ b/drivers/media/platform/s5p-cec/s5p_cec.c
@@ -0,0 +1,283 @@
+/* drivers/media/platform/s5p-cec/s5p_cec.c
+ *
+ * Samsung S5P CEC driver
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This driver is based on the "cec interface driver for exynos soc" by
+ * SangPil Moon.
+ */
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/timer.h>
+#include <linux/version.h>
+#include <linux/workqueue.h>
+#include <media/cec.h>
+
+#include "exynos_hdmi_cec.h"
+#include "regs-cec.h"
+#include "s5p_cec.h"
+
+#define CEC_NAME "s5p-cec"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "debug level (0-2)");
+
+static int s5p_cec_enable(struct cec_adapter *adap, bool enable)
+{
+ struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
+ int ret;
+
+ if (enable) {
+ ret = pm_runtime_get_sync(cec->dev);
+
+ adap->phys_addr = 0x100b;
+ s5p_cec_reset(cec);
+
+ s5p_cec_set_divider(cec);
+ s5p_cec_threshold(cec);
+
+ s5p_cec_unmask_tx_interrupts(cec);
+ s5p_cec_unmask_rx_interrupts(cec);
+ s5p_cec_enable_rx(cec);
+ } else {
+ s5p_cec_mask_tx_interrupts(cec);
+ s5p_cec_mask_rx_interrupts(cec);
+ pm_runtime_disable(cec->dev);
+ }
+
+ return 0;
+}
+
+static int s5p_cec_log_addr(struct cec_adapter *adap, u8 addr)
+{
+ struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
+
+ s5p_cec_set_addr(cec, addr);
+ return 0;
+}
+
+static int s5p_cec_transmit(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
+
+ s5p_cec_copy_packet(cec, msg->msg, msg->len);
+ return 0;
+}
+
+static void s5p_cec_transmit_timed_out(struct cec_adapter *adap)
+{
+
+}
+
+static irqreturn_t s5p_cec_irq_handler(int irq, void *priv)
+{
+ struct s5p_cec_dev *cec = priv;
+ u32 status = 0;
+
+ status = s5p_cec_get_status(cec);
+
+ dev_dbg(cec->dev, "irq received\n");
+
+ if (status & CEC_STATUS_TX_DONE) {
+ if (status & CEC_STATUS_TX_ERROR) {
+ dev_dbg(cec->dev, "CEC_STATUS_TX_ERROR set\n");
+ cec->tx = STATE_ERROR;
+ } else {
+ dev_dbg(cec->dev, "CEC_STATUS_TX_DONE\n");
+ cec->tx = STATE_DONE;
+ }
+ s5p_clr_pending_tx(cec);
+ }
+
+ if (status & CEC_STATUS_RX_DONE) {
+ if (status & CEC_STATUS_RX_ERROR) {
+ dev_dbg(cec->dev, "CEC_STATUS_RX_ERROR set\n");
+ s5p_cec_rx_reset(cec);
+ s5p_cec_enable_rx(cec);
+ } else {
+ dev_dbg(cec->dev, "CEC_STATUS_RX_DONE set\n");
+ if (cec->rx != STATE_IDLE)
+ dev_dbg(cec->dev, "Buffer overrun (worker did not process previous message)\n");
+ cec->rx = STATE_BUSY;
+ cec->msg.len = status >> 24;
+ cec->msg.status = CEC_RX_STATUS_READY;
+ s5p_cec_get_rx_buf(cec, cec->msg.len,
+ cec->msg.msg);
+ cec->rx = STATE_DONE;
+ s5p_cec_enable_rx(cec);
+ }
+ /* Clear interrupt pending bit */
+ s5p_clr_pending_rx(cec);
+ }
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t s5p_cec_irq_handler_thread(int irq, void *priv)
+{
+ struct s5p_cec_dev *cec = priv;
+
+ dev_dbg(cec->dev, "irq processing thread\n");
+ switch (cec->tx) {
+ case STATE_DONE:
+ cec_transmit_done(&cec->adap, CEC_TX_STATUS_OK);
+ cec->tx = STATE_IDLE;
+ break;
+ case STATE_ERROR:
+ cec_transmit_done(&cec->adap, CEC_TX_STATUS_RETRY_TIMEOUT);
+ cec->tx = STATE_IDLE;
+ break;
+ case STATE_BUSY:
+ dev_err(cec->dev, "state set to busy, this should not occur here\n");
+ break;
+ default:
+ break;
+ }
+
+ switch (cec->rx) {
+ case STATE_DONE:
+ cec_received_msg(&cec->adap, &cec->msg);
+ cec->rx = STATE_IDLE;
+ default:
+ break;
+ };
+
+ return IRQ_HANDLED;
+}
+
+static int s5p_cec_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ struct s5p_cec_dev *cec;
+ int ret;
+
+ cec = devm_kzalloc(&pdev->dev, sizeof(*cec), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ cec->dev = dev;
+
+ cec->irq = platform_get_irq(pdev, 0);
+ if (IS_ERR_VALUE(cec->irq))
+ return cec->irq;
+
+ ret = devm_request_threaded_irq(dev, cec->irq, s5p_cec_irq_handler,
+ s5p_cec_irq_handler_thread, 0, pdev->name, cec);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ cec->clk = devm_clk_get(dev, "hdmicec");
+ if (IS_ERR(cec->clk))
+ return PTR_ERR(cec->clk);
+
+ cec->pmu = syscon_regmap_lookup_by_phandle(dev->of_node,
+ "samsung,syscon-phandle");
+ if (IS_ERR(cec->pmu))
+ return -EPROBE_DEFER;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ cec->reg = devm_ioremap_resource(dev, res);
+ if (IS_ERR(cec->reg))
+ return PTR_ERR(cec->reg);
+
+ cec->adap.available_log_addrs = 1;
+ cec->adap.adap_enable = s5p_cec_enable;
+ cec->adap.adap_log_addr = s5p_cec_log_addr;
+ cec->adap.adap_transmit = s5p_cec_transmit;
+ cec->adap.adap_transmit_timed_out = s5p_cec_transmit_timed_out;
+ cec_create_adapter(&cec->adap, CEC_NAME, CEC_CAP_STATE |
+ CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
+ CEC_CAP_RECEIVE, true, THIS_MODULE, &pdev->dev);
+
+ platform_set_drvdata(pdev, cec);
+ pm_runtime_enable(dev);
+
+ dev_dbg(dev, "successfuly probed\n");
+ return 0;
+}
+
+static int s5p_cec_remove(struct platform_device *pdev)
+{
+ struct s5p_cec_dev *cec = platform_get_drvdata(pdev);
+
+ cec_delete_adapter(&cec->adap);
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static int s5p_cec_runtime_suspend(struct device *dev)
+{
+ struct s5p_cec_dev *cec = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(cec->clk);
+ return 0;
+}
+
+static int s5p_cec_runtime_resume(struct device *dev)
+{
+ struct s5p_cec_dev *cec = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(cec->clk);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static int s5p_cec_suspend(struct device *dev)
+{
+ if (pm_runtime_suspended(dev))
+ return 0;
+ return s5p_cec_runtime_suspend(dev);
+}
+
+static int s5p_cec_resume(struct device *dev)
+{
+ if (pm_runtime_suspended(dev))
+ return 0;
+ return s5p_cec_runtime_resume(dev);
+}
+
+static const struct dev_pm_ops s5p_cec_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(s5p_cec_suspend, s5p_cec_resume)
+ SET_RUNTIME_PM_OPS(s5p_cec_runtime_suspend, s5p_cec_runtime_resume,
+ NULL)
+};
+
+static const struct of_device_id s5p_cec_match[] = {
+ {
+ .compatible = "samsung,s5p-cec",
+ },
+ {},
+};
+
+static struct platform_driver s5p_cec_pdrv = {
+ .probe = s5p_cec_probe,
+ .remove = s5p_cec_remove,
+ .driver = {
+ .name = CEC_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = s5p_cec_match,
+ .pm = &s5p_cec_pm_ops,
+ },
+};
+
+module_platform_driver(s5p_cec_pdrv);
+
+MODULE_AUTHOR("Kamil Debski <kamil@wypas.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Samsung S5P CEC driver");
diff --git a/drivers/media/platform/s5p-cec/s5p_cec.h b/drivers/media/platform/s5p-cec/s5p_cec.h
new file mode 100644
index 0000000..d6ffd92
--- /dev/null
+++ b/drivers/media/platform/s5p-cec/s5p_cec.h
@@ -0,0 +1,76 @@
+/* drivers/media/platform/s5p-cec/s5p_cec.h
+ *
+ * Samsung S5P HDMI CEC driver
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _S5P_CEC_H_
+#define _S5P_CEC_H_ __FILE__
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/timer.h>
+#include <linux/version.h>
+#include <linux/workqueue.h>
+#include <media/cec.h>
+
+#include "exynos_hdmi_cec.h"
+#include "regs-cec.h"
+#include "s5p_cec.h"
+
+#define CEC_NAME "s5p-cec"
+
+#define CEC_STATUS_TX_RUNNING (1 << 0)
+#define CEC_STATUS_TX_TRANSFERRING (1 << 1)
+#define CEC_STATUS_TX_DONE (1 << 2)
+#define CEC_STATUS_TX_ERROR (1 << 3)
+#define CEC_STATUS_TX_BYTES (0xFF << 8)
+#define CEC_STATUS_RX_RUNNING (1 << 16)
+#define CEC_STATUS_RX_RECEIVING (1 << 17)
+#define CEC_STATUS_RX_DONE (1 << 18)
+#define CEC_STATUS_RX_ERROR (1 << 19)
+#define CEC_STATUS_RX_BCAST (1 << 20)
+#define CEC_STATUS_RX_BYTES (0xFF << 24)
+
+#define CEC_WORKER_TX_DONE (1 << 0)
+#define CEC_WORKER_RX_MSG (1 << 1)
+
+/* CEC Rx buffer size */
+#define CEC_RX_BUFF_SIZE 16
+/* CEC Tx buffer size */
+#define CEC_TX_BUFF_SIZE 16
+
+enum cec_state {
+ STATE_IDLE,
+ STATE_BUSY,
+ STATE_DONE,
+ STATE_ERROR
+};
+
+struct s5p_cec_dev {
+ struct cec_adapter adap;
+ struct clk *clk;
+ struct device *dev;
+ struct mutex lock;
+ struct regmap *pmu;
+ int irq;
+ void __iomem *reg;
+
+ enum cec_state rx;
+ enum cec_state tx;
+ struct cec_msg msg;
+};
+
+#endif /* _S5P_CEC_H_ */
--
2.1.4
^ permalink raw reply related [flat|nested] 26+ messages in thread* Re: [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver
2015-06-29 10:14 ` [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver Hans Verkuil
@ 2015-07-16 13:09 ` Hans Verkuil
2015-07-21 13:03 ` Marek Szyprowski
0 siblings, 1 reply; 26+ messages in thread
From: Hans Verkuil @ 2015-07-16 13:09 UTC (permalink / raw)
To: Hans Verkuil, linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
Marek, Kamil,
On 06/29/15 12:14, Hans Verkuil wrote:
> From: Kamil Debski <kamil@wypas.org>
>
> Add CEC interface driver present in the Samsung Exynos range of
> SoCs.
>
> The following files were based on work by SangPil Moon:
> - exynos_hdmi_cec.h
> - exynos_hdmi_cecctl.c
>
> Signed-off-by: Kamil Debski <kamil@wypas.org>
> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
> ---
<snip>
> diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c b/drivers/media/platform/s5p-cec/s5p_cec.c
> new file mode 100644
> index 0000000..0f16d00
> --- /dev/null
> +++ b/drivers/media/platform/s5p-cec/s5p_cec.c
> @@ -0,0 +1,283 @@
> +/* drivers/media/platform/s5p-cec/s5p_cec.c
> + *
> + * Samsung S5P CEC driver
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This driver is based on the "cec interface driver for exynos soc" by
> + * SangPil Moon.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/timer.h>
> +#include <linux/version.h>
> +#include <linux/workqueue.h>
> +#include <media/cec.h>
> +
> +#include "exynos_hdmi_cec.h"
> +#include "regs-cec.h"
> +#include "s5p_cec.h"
> +
> +#define CEC_NAME "s5p-cec"
> +
> +static int debug;
> +module_param(debug, int, 0644);
> +MODULE_PARM_DESC(debug, "debug level (0-2)");
> +
> +static int s5p_cec_enable(struct cec_adapter *adap, bool enable)
> +{
> + struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
> + int ret;
> +
> + if (enable) {
> + ret = pm_runtime_get_sync(cec->dev);
> +
> + adap->phys_addr = 0x100b;
This is a bogus physical address. The actual physical address has to be derived
from the EDID that is read by the HDMI transmitter.
I think in the case of this driver it will have to be userspace that assigns
the physical address after reading the EDID from drm/kms?
How did you test this, Kamil?
Regards,
Hans
> + s5p_cec_reset(cec);
> +
> + s5p_cec_set_divider(cec);
> + s5p_cec_threshold(cec);
> +
> + s5p_cec_unmask_tx_interrupts(cec);
> + s5p_cec_unmask_rx_interrupts(cec);
> + s5p_cec_enable_rx(cec);
> + } else {
> + s5p_cec_mask_tx_interrupts(cec);
> + s5p_cec_mask_rx_interrupts(cec);
> + pm_runtime_disable(cec->dev);
> + }
> +
> + return 0;
> +}
> +
> +static int s5p_cec_log_addr(struct cec_adapter *adap, u8 addr)
> +{
> + struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
> +
> + s5p_cec_set_addr(cec, addr);
> + return 0;
> +}
> +
> +static int s5p_cec_transmit(struct cec_adapter *adap, struct cec_msg *msg)
> +{
> + struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
> +
> + s5p_cec_copy_packet(cec, msg->msg, msg->len);
> + return 0;
> +}
> +
> +static void s5p_cec_transmit_timed_out(struct cec_adapter *adap)
> +{
> +
> +}
> +
> +static irqreturn_t s5p_cec_irq_handler(int irq, void *priv)
> +{
> + struct s5p_cec_dev *cec = priv;
> + u32 status = 0;
> +
> + status = s5p_cec_get_status(cec);
> +
> + dev_dbg(cec->dev, "irq received\n");
> +
> + if (status & CEC_STATUS_TX_DONE) {
> + if (status & CEC_STATUS_TX_ERROR) {
> + dev_dbg(cec->dev, "CEC_STATUS_TX_ERROR set\n");
> + cec->tx = STATE_ERROR;
> + } else {
> + dev_dbg(cec->dev, "CEC_STATUS_TX_DONE\n");
> + cec->tx = STATE_DONE;
> + }
> + s5p_clr_pending_tx(cec);
> + }
> +
> + if (status & CEC_STATUS_RX_DONE) {
> + if (status & CEC_STATUS_RX_ERROR) {
> + dev_dbg(cec->dev, "CEC_STATUS_RX_ERROR set\n");
> + s5p_cec_rx_reset(cec);
> + s5p_cec_enable_rx(cec);
> + } else {
> + dev_dbg(cec->dev, "CEC_STATUS_RX_DONE set\n");
> + if (cec->rx != STATE_IDLE)
> + dev_dbg(cec->dev, "Buffer overrun (worker did not process previous message)\n");
> + cec->rx = STATE_BUSY;
> + cec->msg.len = status >> 24;
> + cec->msg.status = CEC_RX_STATUS_READY;
> + s5p_cec_get_rx_buf(cec, cec->msg.len,
> + cec->msg.msg);
> + cec->rx = STATE_DONE;
> + s5p_cec_enable_rx(cec);
> + }
> + /* Clear interrupt pending bit */
> + s5p_clr_pending_rx(cec);
> + }
> + return IRQ_WAKE_THREAD;
> +}
> +
> +static irqreturn_t s5p_cec_irq_handler_thread(int irq, void *priv)
> +{
> + struct s5p_cec_dev *cec = priv;
> +
> + dev_dbg(cec->dev, "irq processing thread\n");
> + switch (cec->tx) {
> + case STATE_DONE:
> + cec_transmit_done(&cec->adap, CEC_TX_STATUS_OK);
> + cec->tx = STATE_IDLE;
> + break;
> + case STATE_ERROR:
> + cec_transmit_done(&cec->adap, CEC_TX_STATUS_RETRY_TIMEOUT);
> + cec->tx = STATE_IDLE;
> + break;
> + case STATE_BUSY:
> + dev_err(cec->dev, "state set to busy, this should not occur here\n");
> + break;
> + default:
> + break;
> + }
> +
> + switch (cec->rx) {
> + case STATE_DONE:
> + cec_received_msg(&cec->adap, &cec->msg);
> + cec->rx = STATE_IDLE;
> + default:
> + break;
> + };
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int s5p_cec_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct resource *res;
> + struct s5p_cec_dev *cec;
> + int ret;
> +
> + cec = devm_kzalloc(&pdev->dev, sizeof(*cec), GFP_KERNEL);
> + if (!dev)
> + return -ENOMEM;
> +
> + cec->dev = dev;
> +
> + cec->irq = platform_get_irq(pdev, 0);
> + if (IS_ERR_VALUE(cec->irq))
> + return cec->irq;
> +
> + ret = devm_request_threaded_irq(dev, cec->irq, s5p_cec_irq_handler,
> + s5p_cec_irq_handler_thread, 0, pdev->name, cec);
> + if (IS_ERR_VALUE(ret))
> + return ret;
> +
> + cec->clk = devm_clk_get(dev, "hdmicec");
> + if (IS_ERR(cec->clk))
> + return PTR_ERR(cec->clk);
> +
> + cec->pmu = syscon_regmap_lookup_by_phandle(dev->of_node,
> + "samsung,syscon-phandle");
> + if (IS_ERR(cec->pmu))
> + return -EPROBE_DEFER;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + cec->reg = devm_ioremap_resource(dev, res);
> + if (IS_ERR(cec->reg))
> + return PTR_ERR(cec->reg);
> +
> + cec->adap.available_log_addrs = 1;
> + cec->adap.adap_enable = s5p_cec_enable;
> + cec->adap.adap_log_addr = s5p_cec_log_addr;
> + cec->adap.adap_transmit = s5p_cec_transmit;
> + cec->adap.adap_transmit_timed_out = s5p_cec_transmit_timed_out;
> + cec_create_adapter(&cec->adap, CEC_NAME, CEC_CAP_STATE |
> + CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
> + CEC_CAP_RECEIVE, true, THIS_MODULE, &pdev->dev);
> +
> + platform_set_drvdata(pdev, cec);
> + pm_runtime_enable(dev);
> +
> + dev_dbg(dev, "successfuly probed\n");
> + return 0;
> +}
> +
> +static int s5p_cec_remove(struct platform_device *pdev)
> +{
> + struct s5p_cec_dev *cec = platform_get_drvdata(pdev);
> +
> + cec_delete_adapter(&cec->adap);
> + pm_runtime_disable(&pdev->dev);
> + return 0;
> +}
> +
> +static int s5p_cec_runtime_suspend(struct device *dev)
> +{
> + struct s5p_cec_dev *cec = dev_get_drvdata(dev);
> +
> + clk_disable_unprepare(cec->clk);
> + return 0;
> +}
> +
> +static int s5p_cec_runtime_resume(struct device *dev)
> +{
> + struct s5p_cec_dev *cec = dev_get_drvdata(dev);
> + int ret;
> +
> + ret = clk_prepare_enable(cec->clk);
> + if (ret < 0)
> + return ret;
> + return 0;
> +}
> +
> +static int s5p_cec_suspend(struct device *dev)
> +{
> + if (pm_runtime_suspended(dev))
> + return 0;
> + return s5p_cec_runtime_suspend(dev);
> +}
> +
> +static int s5p_cec_resume(struct device *dev)
> +{
> + if (pm_runtime_suspended(dev))
> + return 0;
> + return s5p_cec_runtime_resume(dev);
> +}
> +
> +static const struct dev_pm_ops s5p_cec_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(s5p_cec_suspend, s5p_cec_resume)
> + SET_RUNTIME_PM_OPS(s5p_cec_runtime_suspend, s5p_cec_runtime_resume,
> + NULL)
> +};
> +
> +static const struct of_device_id s5p_cec_match[] = {
> + {
> + .compatible = "samsung,s5p-cec",
> + },
> + {},
> +};
> +
> +static struct platform_driver s5p_cec_pdrv = {
> + .probe = s5p_cec_probe,
> + .remove = s5p_cec_remove,
> + .driver = {
> + .name = CEC_NAME,
> + .owner = THIS_MODULE,
> + .of_match_table = s5p_cec_match,
> + .pm = &s5p_cec_pm_ops,
> + },
> +};
> +
> +module_platform_driver(s5p_cec_pdrv);
> +
> +MODULE_AUTHOR("Kamil Debski <kamil@wypas.org>");
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION("Samsung S5P CEC driver");
> diff --git a/drivers/media/platform/s5p-cec/s5p_cec.h b/drivers/media/platform/s5p-cec/s5p_cec.h
> new file mode 100644
> index 0000000..d6ffd92
> --- /dev/null
> +++ b/drivers/media/platform/s5p-cec/s5p_cec.h
> @@ -0,0 +1,76 @@
> +/* drivers/media/platform/s5p-cec/s5p_cec.h
> + *
> + * Samsung S5P HDMI CEC driver
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#ifndef _S5P_CEC_H_
> +#define _S5P_CEC_H_ __FILE__
> +
> +#include <linux/clk.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/timer.h>
> +#include <linux/version.h>
> +#include <linux/workqueue.h>
> +#include <media/cec.h>
> +
> +#include "exynos_hdmi_cec.h"
> +#include "regs-cec.h"
> +#include "s5p_cec.h"
> +
> +#define CEC_NAME "s5p-cec"
> +
> +#define CEC_STATUS_TX_RUNNING (1 << 0)
> +#define CEC_STATUS_TX_TRANSFERRING (1 << 1)
> +#define CEC_STATUS_TX_DONE (1 << 2)
> +#define CEC_STATUS_TX_ERROR (1 << 3)
> +#define CEC_STATUS_TX_BYTES (0xFF << 8)
> +#define CEC_STATUS_RX_RUNNING (1 << 16)
> +#define CEC_STATUS_RX_RECEIVING (1 << 17)
> +#define CEC_STATUS_RX_DONE (1 << 18)
> +#define CEC_STATUS_RX_ERROR (1 << 19)
> +#define CEC_STATUS_RX_BCAST (1 << 20)
> +#define CEC_STATUS_RX_BYTES (0xFF << 24)
> +
> +#define CEC_WORKER_TX_DONE (1 << 0)
> +#define CEC_WORKER_RX_MSG (1 << 1)
> +
> +/* CEC Rx buffer size */
> +#define CEC_RX_BUFF_SIZE 16
> +/* CEC Tx buffer size */
> +#define CEC_TX_BUFF_SIZE 16
> +
> +enum cec_state {
> + STATE_IDLE,
> + STATE_BUSY,
> + STATE_DONE,
> + STATE_ERROR
> +};
> +
> +struct s5p_cec_dev {
> + struct cec_adapter adap;
> + struct clk *clk;
> + struct device *dev;
> + struct mutex lock;
> + struct regmap *pmu;
> + int irq;
> + void __iomem *reg;
> +
> + enum cec_state rx;
> + enum cec_state tx;
> + struct cec_msg msg;
> +};
> +
> +#endif /* _S5P_CEC_H_ */
>
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver
2015-07-16 13:09 ` Hans Verkuil
@ 2015-07-21 13:03 ` Marek Szyprowski
0 siblings, 0 replies; 26+ messages in thread
From: Marek Szyprowski @ 2015-07-21 13:03 UTC (permalink / raw)
To: Hans Verkuil, Hans Verkuil, linux-media
Cc: linux-samsung-soc, sean, dmitry.torokhov, lars, dri-devel, kamil,
kyungmin.park, thomas, linux-input
Hello,
On 2015-07-16 15:09, Hans Verkuil wrote:
> Marek, Kamil,
>
> On 06/29/15 12:14, Hans Verkuil wrote:
>> From: Kamil Debski <kamil@wypas.org>
>>
>> Add CEC interface driver present in the Samsung Exynos range of
>> SoCs.
>>
>> The following files were based on work by SangPil Moon:
>> - exynos_hdmi_cec.h
>> - exynos_hdmi_cecctl.c
>>
>> Signed-off-by: Kamil Debski <kamil@wypas.org>
>> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
>> ---
> <snip>
>
>> diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c b/drivers/media/platform/s5p-cec/s5p_cec.c
>> new file mode 100644
>> index 0000000..0f16d00
>> --- /dev/null
>> +++ b/drivers/media/platform/s5p-cec/s5p_cec.c
>> @@ -0,0 +1,283 @@
>> +/* drivers/media/platform/s5p-cec/s5p_cec.c
>> + *
>> + * Samsung S5P CEC driver
>> + *
>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> + *
>> + * This driver is based on the "cec interface driver for exynos soc" by
>> + * SangPil Moon.
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/interrupt.h>
>> +#include <linux/kernel.h>
>> +#include <linux/mfd/syscon.h>
>> +#include <linux/module.h>
>> +#include <linux/of.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/timer.h>
>> +#include <linux/version.h>
>> +#include <linux/workqueue.h>
>> +#include <media/cec.h>
>> +
>> +#include "exynos_hdmi_cec.h"
>> +#include "regs-cec.h"
>> +#include "s5p_cec.h"
>> +
>> +#define CEC_NAME "s5p-cec"
>> +
>> +static int debug;
>> +module_param(debug, int, 0644);
>> +MODULE_PARM_DESC(debug, "debug level (0-2)");
>> +
>> +static int s5p_cec_enable(struct cec_adapter *adap, bool enable)
>> +{
>> + struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
>> + int ret;
>> +
>> + if (enable) {
>> + ret = pm_runtime_get_sync(cec->dev);
>> +
>> + adap->phys_addr = 0x100b;
> This is a bogus physical address. The actual physical address has to be derived
> from the EDID that is read by the HDMI transmitter.
>
> I think in the case of this driver it will have to be userspace that assigns
> the physical address after reading the EDID from drm/kms?
>
> How did you test this, Kamil?
If I remember correctly, physical address has been derived from EDID in the
userspace (it is available in /sys/class/drm/*) and passed to s5p-cec
driver by
appropriate ioctl.
I don't know what is the reason for the above 'adap->phys_addr = 0x100b'
assignment.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver
@ 2015-07-21 13:03 ` Marek Szyprowski
0 siblings, 0 replies; 26+ messages in thread
From: Marek Szyprowski @ 2015-07-21 13:03 UTC (permalink / raw)
To: Hans Verkuil, Hans Verkuil, linux-media
Cc: dri-devel, kyungmin.park, thomas, sean, dmitry.torokhov,
linux-input, linux-samsung-soc, lars, kamil
Hello,
On 2015-07-16 15:09, Hans Verkuil wrote:
> Marek, Kamil,
>
> On 06/29/15 12:14, Hans Verkuil wrote:
>> From: Kamil Debski <kamil@wypas.org>
>>
>> Add CEC interface driver present in the Samsung Exynos range of
>> SoCs.
>>
>> The following files were based on work by SangPil Moon:
>> - exynos_hdmi_cec.h
>> - exynos_hdmi_cecctl.c
>>
>> Signed-off-by: Kamil Debski <kamil@wypas.org>
>> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
>> ---
> <snip>
>
>> diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c b/drivers/media/platform/s5p-cec/s5p_cec.c
>> new file mode 100644
>> index 0000000..0f16d00
>> --- /dev/null
>> +++ b/drivers/media/platform/s5p-cec/s5p_cec.c
>> @@ -0,0 +1,283 @@
>> +/* drivers/media/platform/s5p-cec/s5p_cec.c
>> + *
>> + * Samsung S5P CEC driver
>> + *
>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> + *
>> + * This driver is based on the "cec interface driver for exynos soc" by
>> + * SangPil Moon.
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/interrupt.h>
>> +#include <linux/kernel.h>
>> +#include <linux/mfd/syscon.h>
>> +#include <linux/module.h>
>> +#include <linux/of.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/timer.h>
>> +#include <linux/version.h>
>> +#include <linux/workqueue.h>
>> +#include <media/cec.h>
>> +
>> +#include "exynos_hdmi_cec.h"
>> +#include "regs-cec.h"
>> +#include "s5p_cec.h"
>> +
>> +#define CEC_NAME "s5p-cec"
>> +
>> +static int debug;
>> +module_param(debug, int, 0644);
>> +MODULE_PARM_DESC(debug, "debug level (0-2)");
>> +
>> +static int s5p_cec_enable(struct cec_adapter *adap, bool enable)
>> +{
>> + struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev, adap);
>> + int ret;
>> +
>> + if (enable) {
>> + ret = pm_runtime_get_sync(cec->dev);
>> +
>> + adap->phys_addr = 0x100b;
> This is a bogus physical address. The actual physical address has to be derived
> from the EDID that is read by the HDMI transmitter.
>
> I think in the case of this driver it will have to be userspace that assigns
> the physical address after reading the EDID from drm/kms?
>
> How did you test this, Kamil?
If I remember correctly, physical address has been derived from EDID in the
userspace (it is available in /sys/class/drm/*) and passed to s5p-cec
driver by
appropriate ioctl.
I don't know what is the reason for the above 'adap->phys_addr = 0x100b'
assignment.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver
2015-07-21 13:03 ` Marek Szyprowski
(?)
@ 2015-07-23 16:39 ` Kamil Debski
2015-07-23 17:22 ` Hans Verkuil
-1 siblings, 1 reply; 26+ messages in thread
From: Kamil Debski @ 2015-07-23 16:39 UTC (permalink / raw)
To: Marek Szyprowski
Cc: Hans Verkuil, Hans Verkuil, linux-media, dri-devel, Kyungmin Park,
thomas, sean, dmitry.torokhov, linux-input, linux-samsung-soc,
lars
Hi,
On 21 July 2015 at 15:03, Marek Szyprowski <m.szyprowski@samsung.com> wrote:
> Hello,
>
> On 2015-07-16 15:09, Hans Verkuil wrote:
>>
>> Marek, Kamil,
>>
>> On 06/29/15 12:14, Hans Verkuil wrote:
>>>
>>> From: Kamil Debski <kamil@wypas.org>
>>>
>>> Add CEC interface driver present in the Samsung Exynos range of
>>> SoCs.
>>>
>>> The following files were based on work by SangPil Moon:
>>> - exynos_hdmi_cec.h
>>> - exynos_hdmi_cecctl.c
>>>
>>> Signed-off-by: Kamil Debski <kamil@wypas.org>
>>> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
>>> ---
>>
>> <snip>
>>
>>> diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c
>>> b/drivers/media/platform/s5p-cec/s5p_cec.c
>>> new file mode 100644
>>> index 0000000..0f16d00
>>> --- /dev/null
>>> +++ b/drivers/media/platform/s5p-cec/s5p_cec.c
>>> @@ -0,0 +1,283 @@
>>> +/* drivers/media/platform/s5p-cec/s5p_cec.c
>>> + *
>>> + * Samsung S5P CEC driver
>>> + *
>>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
>>> + *
>>> + * This program is free software; you can redistribute it and/or modify
>>> + * it under the terms of the GNU General Public License as published by
>>> + * the Free Software Foundation; either version 2 of the License, or
>>> + * (at your option) any later version.
>>> + *
>>> + * This driver is based on the "cec interface driver for exynos soc" by
>>> + * SangPil Moon.
>>> + */
>>> +
>>> +#include <linux/clk.h>
>>> +#include <linux/interrupt.h>
>>> +#include <linux/kernel.h>
>>> +#include <linux/mfd/syscon.h>
>>> +#include <linux/module.h>
>>> +#include <linux/of.h>
>>> +#include <linux/platform_device.h>
>>> +#include <linux/pm_runtime.h>
>>> +#include <linux/timer.h>
>>> +#include <linux/version.h>
>>> +#include <linux/workqueue.h>
>>> +#include <media/cec.h>
>>> +
>>> +#include "exynos_hdmi_cec.h"
>>> +#include "regs-cec.h"
>>> +#include "s5p_cec.h"
>>> +
>>> +#define CEC_NAME "s5p-cec"
>>> +
>>> +static int debug;
>>> +module_param(debug, int, 0644);
>>> +MODULE_PARM_DESC(debug, "debug level (0-2)");
>>> +
>>> +static int s5p_cec_enable(struct cec_adapter *adap, bool enable)
>>> +{
>>> + struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev,
>>> adap);
>>> + int ret;
>>> +
>>> + if (enable) {
>>> + ret = pm_runtime_get_sync(cec->dev);
>>> +
>>> + adap->phys_addr = 0x100b;
>>
>> This is a bogus physical address. The actual physical address has to be
>> derived
>> from the EDID that is read by the HDMI transmitter.
>>
>> I think in the case of this driver it will have to be userspace that
>> assigns
>> the physical address after reading the EDID from drm/kms?
>>
>> How did you test this, Kamil?
>
>
> If I remember correctly, physical address has been derived from EDID in the
> userspace (it is available in /sys/class/drm/*) and passed to s5p-cec driver
> by
> appropriate ioctl.
>
> I don't know what is the reason for the above 'adap->phys_addr = 0x100b'
> assignment.
At some point there was an idea to read the address from the EDID in
kernel. This static address was a hack until the code that reads the
EDID is written. As you say, it is much better to leave the address to
be set by the userspace. So this assignment serves no purpose anymore.
>
> Best regards
> --
> Marek Szyprowski, PhD
> Samsung R&D Institute Poland
>
Best wishes,
Kamil
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver
2015-07-23 16:39 ` Kamil Debski
@ 2015-07-23 17:22 ` Hans Verkuil
0 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-07-23 17:22 UTC (permalink / raw)
To: Kamil Debski, Marek Szyprowski
Cc: Hans Verkuil, Hans Verkuil, linux-media, dri-devel, Kyungmin Park,
thomas, sean, dmitry.torokhov, linux-input, linux-samsung-soc,
lars
On 07/23/2015 06:39 PM, Kamil Debski wrote:
> Hi,
>
> On 21 July 2015 at 15:03, Marek Szyprowski <m.szyprowski@samsung.com> wrote:
>> Hello,
>>
>> On 2015-07-16 15:09, Hans Verkuil wrote:
>>>
>>> Marek, Kamil,
>>>
>>> On 06/29/15 12:14, Hans Verkuil wrote:
>>>>
>>>> From: Kamil Debski <kamil@wypas.org>
>>>>
>>>> Add CEC interface driver present in the Samsung Exynos range of
>>>> SoCs.
>>>>
>>>> The following files were based on work by SangPil Moon:
>>>> - exynos_hdmi_cec.h
>>>> - exynos_hdmi_cecctl.c
>>>>
>>>> Signed-off-by: Kamil Debski <kamil@wypas.org>
>>>> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
>>>> ---
>>>
>>> <snip>
>>>
>>>> diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c
>>>> b/drivers/media/platform/s5p-cec/s5p_cec.c
>>>> new file mode 100644
>>>> index 0000000..0f16d00
>>>> --- /dev/null
>>>> +++ b/drivers/media/platform/s5p-cec/s5p_cec.c
>>>> @@ -0,0 +1,283 @@
>>>> +/* drivers/media/platform/s5p-cec/s5p_cec.c
>>>> + *
>>>> + * Samsung S5P CEC driver
>>>> + *
>>>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
>>>> + *
>>>> + * This program is free software; you can redistribute it and/or modify
>>>> + * it under the terms of the GNU General Public License as published by
>>>> + * the Free Software Foundation; either version 2 of the License, or
>>>> + * (at your option) any later version.
>>>> + *
>>>> + * This driver is based on the "cec interface driver for exynos soc" by
>>>> + * SangPil Moon.
>>>> + */
>>>> +
>>>> +#include <linux/clk.h>
>>>> +#include <linux/interrupt.h>
>>>> +#include <linux/kernel.h>
>>>> +#include <linux/mfd/syscon.h>
>>>> +#include <linux/module.h>
>>>> +#include <linux/of.h>
>>>> +#include <linux/platform_device.h>
>>>> +#include <linux/pm_runtime.h>
>>>> +#include <linux/timer.h>
>>>> +#include <linux/version.h>
>>>> +#include <linux/workqueue.h>
>>>> +#include <media/cec.h>
>>>> +
>>>> +#include "exynos_hdmi_cec.h"
>>>> +#include "regs-cec.h"
>>>> +#include "s5p_cec.h"
>>>> +
>>>> +#define CEC_NAME "s5p-cec"
>>>> +
>>>> +static int debug;
>>>> +module_param(debug, int, 0644);
>>>> +MODULE_PARM_DESC(debug, "debug level (0-2)");
>>>> +
>>>> +static int s5p_cec_enable(struct cec_adapter *adap, bool enable)
>>>> +{
>>>> + struct s5p_cec_dev *cec = container_of(adap, struct s5p_cec_dev,
>>>> adap);
>>>> + int ret;
>>>> +
>>>> + if (enable) {
>>>> + ret = pm_runtime_get_sync(cec->dev);
>>>> +
>>>> + adap->phys_addr = 0x100b;
>>>
>>> This is a bogus physical address. The actual physical address has to be
>>> derived
>>> from the EDID that is read by the HDMI transmitter.
>>>
>>> I think in the case of this driver it will have to be userspace that
>>> assigns
>>> the physical address after reading the EDID from drm/kms?
>>>
>>> How did you test this, Kamil?
>>
>>
>> If I remember correctly, physical address has been derived from EDID in the
>> userspace (it is available in /sys/class/drm/*) and passed to s5p-cec driver
>> by
>> appropriate ioctl.
>>
>> I don't know what is the reason for the above 'adap->phys_addr = 0x100b'
>> assignment.
>
> At some point there was an idea to read the address from the EDID in
> kernel. This static address was a hack until the code that reads the
> EDID is written. As you say, it is much better to leave the address to
> be set by the userspace. So this assignment serves no purpose anymore.
Thank you, that's what I thought. It's fixed in my current tree. Still
working on the CEC framework: I'm chasing race conditions and I suspect
that there may be a bug in the adv7604 or adv7511 CEC implementation.
Once I've sorted that I post a new version which has been tested a lot
more thoroughly and should be complete except for the documentation.
Regards,
Hans
^ permalink raw reply [flat|nested] 26+ messages in thread
* [PATCHv7 15/15] cobalt: add cec support
2015-06-29 10:14 [PATCHv7 00/15] HDMI CEC framework Hans Verkuil
` (13 preceding siblings ...)
2015-06-29 10:14 ` [PATCHv7 14/15] cec: s5p-cec: Add s5p-cec driver Hans Verkuil
@ 2015-06-29 10:15 ` Hans Verkuil
14 siblings, 0 replies; 26+ messages in thread
From: Hans Verkuil @ 2015-06-29 10:15 UTC (permalink / raw)
To: linux-media
Cc: dri-devel, m.szyprowski, kyungmin.park, thomas, sean,
dmitry.torokhov, linux-input, linux-samsung-soc, lars, kamil
Add CEC support to the cobalt driver.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
drivers/media/pci/cobalt/cobalt-driver.c | 37 +++++++++--
drivers/media/pci/cobalt/cobalt-driver.h | 2 +
drivers/media/pci/cobalt/cobalt-v4l2.c | 110 +++++++++++++++++++++++++++++--
3 files changed, 138 insertions(+), 11 deletions(-)
diff --git a/drivers/media/pci/cobalt/cobalt-driver.c b/drivers/media/pci/cobalt/cobalt-driver.c
index b994b8e..a6d3644 100644
--- a/drivers/media/pci/cobalt/cobalt-driver.c
+++ b/drivers/media/pci/cobalt/cobalt-driver.c
@@ -76,6 +76,7 @@ static u8 edid[256] = {
0x0A, 0x0A, 0x0A, 0x0A, 0x00, 0x00, 0x00, 0x10,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x68,
+
0x02, 0x03, 0x1a, 0xc0, 0x48, 0xa2, 0x10, 0x04,
0x02, 0x01, 0x21, 0x14, 0x13, 0x23, 0x09, 0x07,
0x07, 0x65, 0x03, 0x0c, 0x00, 0x10, 0x00, 0xe2,
@@ -149,17 +150,44 @@ static void cobalt_notify(struct v4l2_subdev *sd,
struct cobalt *cobalt = to_cobalt(sd->v4l2_dev);
unsigned sd_nr = cobalt_get_sd_nr(sd);
struct cobalt_stream *s = &cobalt->streams[sd_nr];
- bool hotplug = arg ? *((int *)arg) : false;
- if (s->is_output)
+ switch (notification) {
+ case V4L2_SUBDEV_CEC_TX_DONE:
+ cec_transmit_done(&s->cec_adap, (unsigned long)arg);
+ return;
+ case V4L2_SUBDEV_CEC_RX_MSG:
+ cec_received_msg(&s->cec_adap, arg);
+ return;
+ default:
+ break;
+ }
+
+ if (s->is_output) {
+ switch (notification) {
+ case ADV7511_EDID_DETECT: {
+ struct adv7511_edid_detect *ed = arg;
+
+ s->cec_adap.phys_addr = ed->phys_addr;
+ if (!ed->present) {
+ cec_enable(&s->cec_adap, false);
+ break;
+ }
+ cec_enable(&s->cec_adap, true);
+ break;
+ }
+ }
return;
+ }
switch (notification) {
- case ADV76XX_HOTPLUG:
+ case ADV76XX_HOTPLUG: {
+ bool hotplug = arg ? *((int *)arg) : false;
+
cobalt_s_bit_sysctrl(cobalt,
COBALT_SYS_CTRL_HPD_TO_CONNECTOR_BIT(sd_nr), hotplug);
cobalt_dbg(1, "Set hotplug for adv %d to %d\n", sd_nr, hotplug);
break;
+ }
case V4L2_DEVICE_NOTIFY_EVENT:
cobalt_dbg(1, "Format changed for adv %d\n", sd_nr);
v4l2_event_queue(&s->vdev, arg);
@@ -626,8 +654,9 @@ static int cobalt_subdevs_hsma_init(struct cobalt *cobalt)
s->sd = v4l2_i2c_new_subdev_board(&cobalt->v4l2_dev,
s->i2c_adap, &adv7842_info, NULL);
if (s->sd) {
- int err = v4l2_subdev_call(s->sd, pad, set_edid, &cobalt_edid);
+ int err;
+ err = v4l2_subdev_call(s->sd, pad, set_edid, &cobalt_edid);
if (err)
return err;
err = v4l2_subdev_call(s->sd, pad, set_fmt, NULL,
diff --git a/drivers/media/pci/cobalt/cobalt-driver.h b/drivers/media/pci/cobalt/cobalt-driver.h
index c206df9..151c80f 100644
--- a/drivers/media/pci/cobalt/cobalt-driver.h
+++ b/drivers/media/pci/cobalt/cobalt-driver.h
@@ -31,6 +31,7 @@
#include <linux/workqueue.h>
#include <linux/mutex.h>
+#include <media/cec.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
@@ -221,6 +222,7 @@ struct cobalt_stream {
struct list_head bufs;
struct i2c_adapter *i2c_adap;
struct v4l2_subdev *sd;
+ struct cec_adapter cec_adap;
struct mutex lock;
spinlock_t irqlock;
struct v4l2_dv_timings timings;
diff --git a/drivers/media/pci/cobalt/cobalt-v4l2.c b/drivers/media/pci/cobalt/cobalt-v4l2.c
index b40c2d1..b37bfd5 100644
--- a/drivers/media/pci/cobalt/cobalt-v4l2.c
+++ b/drivers/media/pci/cobalt/cobalt-v4l2.c
@@ -1156,6 +1156,69 @@ static const struct v4l2_file_operations cobalt_empty_fops = {
.release = v4l2_fh_release,
};
+static inline struct v4l2_subdev *adap_to_sd(struct cec_adapter *adap)
+{
+ struct cobalt_stream *s = container_of(adap, struct cobalt_stream, cec_adap);
+
+ return s->sd;
+}
+
+static int cobalt_cec_enable(struct cec_adapter *adap, bool enable)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_enable, enable);
+}
+
+static int cobalt_cec_log_addr(struct cec_adapter *adap, u8 log_addr)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_log_addr,
+ log_addr);
+}
+
+static int cobalt_cec_transmit(struct cec_adapter *adap, struct cec_msg *msg)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_transmit, msg);
+}
+
+static void cobalt_cec_transmit_timed_out(struct cec_adapter *adap)
+{
+ return v4l2_subdev_call(adap_to_sd(adap), video, cec_transmit_timed_out);
+}
+
+static u8 cobalt_cec_cdc_hpd(struct cec_adapter *adap, u8 cdc_hpd_state)
+{
+ switch (cdc_hpd_state) {
+ case CEC_OP_HPD_STATE_EDID_DISABLE:
+ case CEC_OP_HPD_STATE_EDID_ENABLE:
+ case CEC_OP_HPD_STATE_EDID_DISABLE_ENABLE:
+ return CEC_OP_HPD_ERROR_NONE;
+ case CEC_OP_HPD_STATE_CP_EDID_DISABLE:
+ case CEC_OP_HPD_STATE_CP_EDID_ENABLE:
+ case CEC_OP_HPD_STATE_CP_EDID_DISABLE_ENABLE:
+ default:
+ return CEC_OP_HPD_ERROR_INITIATOR_WRONG_STATE;
+ }
+}
+
+static int cobalt_sink_initiate_arc(struct cec_adapter *adap)
+{
+ return 0;
+}
+
+static int cobalt_sink_terminate_arc(struct cec_adapter *adap)
+{
+ return 0;
+}
+
+static int cobalt_source_arc_initiated(struct cec_adapter *adap)
+{
+ return 0;
+}
+
+static int cobalt_source_arc_terminated(struct cec_adapter *adap)
+{
+ return 0;
+}
+
static int cobalt_node_register(struct cobalt *cobalt, int node)
{
static const struct v4l2_dv_timings dv1080p60 =
@@ -1163,7 +1226,7 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
struct cobalt_stream *s = cobalt->streams + node;
struct video_device *vdev = &s->vdev;
struct vb2_queue *q = &s->q;
- int ret;
+ int ret = 0;
mutex_init(&s->lock);
spin_lock_init(&s->irqlock);
@@ -1190,6 +1253,29 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
if (!s->is_audio) {
if (s->is_dummy)
cobalt_warn("Setting up dummy video node %d\n", node);
+ if (s->sd) {
+ u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_RECEIVE |
+ CEC_CAP_LOG_ADDRS | CEC_CAP_PASSTHROUGH |
+ CEC_CAP_RC | CEC_CAP_ARC;
+
+ s->cec_adap.adap_enable = cobalt_cec_enable;
+ s->cec_adap.adap_log_addr = cobalt_cec_log_addr;
+ s->cec_adap.adap_transmit = cobalt_cec_transmit;
+ s->cec_adap.adap_transmit_timed_out =
+ cobalt_cec_transmit_timed_out;
+ s->cec_adap.source_cdc_hpd = cobalt_cec_cdc_hpd;
+ s->cec_adap.sink_initiate_arc = cobalt_sink_initiate_arc;
+ s->cec_adap.sink_terminate_arc = cobalt_sink_terminate_arc;
+ s->cec_adap.source_arc_initiated = cobalt_source_arc_initiated;
+ s->cec_adap.source_arc_terminated = cobalt_source_arc_terminated;
+ if (s->is_output)
+ caps |= CEC_CAP_CDC;
+ ret = cec_create_adapter(&s->cec_adap, vdev->name,
+ caps, !s->is_output, THIS_MODULE,
+ &cobalt->pci_dev->dev);
+ s->cec_adap.available_log_addrs =
+ v4l2_subdev_call(s->sd, video, cec_available_log_addrs);
+ }
vdev->v4l2_dev = &cobalt->v4l2_dev;
if (s->is_dummy)
vdev->fops = &cobalt_empty_fops;
@@ -1203,8 +1289,11 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
vdev->ctrl_handler = s->sd->ctrl_handler;
s->timings = dv1080p60;
v4l2_subdev_call(s->sd, video, s_dv_timings, &s->timings);
- if (!s->is_output && s->sd)
+ if (!s->is_output && s->sd) {
cobalt_enable_input(s);
+ s->cec_adap.phys_addr = 0;
+ ret = cec_enable(&s->cec_adap, true);
+ }
vdev->ioctl_ops = s->is_dummy ? &cobalt_ioctl_empty_ops :
&cobalt_ioctl_ops;
}
@@ -1224,16 +1313,20 @@ static int cobalt_node_register(struct cobalt *cobalt, int node)
vdev->queue = q;
video_set_drvdata(vdev, s);
- ret = vb2_queue_init(q);
+ if (ret == 0)
+ ret = vb2_queue_init(q);
if (!s->is_audio && ret == 0)
ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
- else if (!s->is_dummy)
+ else if (!s->is_dummy && ret == 0)
ret = cobalt_alsa_init(s);
if (ret < 0) {
- if (!s->is_audio)
+ if (!s->is_audio) {
+ if (s->sd)
+ cec_delete_adapter(&s->cec_adap);
cobalt_err("couldn't register v4l2 device node %d\n",
node);
+ }
return ret;
}
cobalt_info("registered node %d\n", node);
@@ -1264,9 +1357,12 @@ void cobalt_nodes_unregister(struct cobalt *cobalt)
struct cobalt_stream *s = cobalt->streams + node;
struct video_device *vdev = &s->vdev;
- if (!s->is_audio)
+ if (!s->is_audio) {
video_unregister_device(vdev);
- else if (!s->is_dummy)
+ if (s->sd)
+ cec_delete_adapter(&s->cec_adap);
+ } else if (!s->is_dummy) {
cobalt_alsa_exit(s);
+ }
}
}
--
2.1.4
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