* [PATCH] simplefb: Fix build failure on Sparc
From: Hans de Goede @ 2015-01-05 8:15 UTC (permalink / raw)
To: linux-arm-kernel
of_platform_device_create is only defined when CONFIG_OF_ADDRESS is set,
which is normally always the case when CONFIG_OF is defined, except on Sparc,
so explicitly check for CONFIG_OF_ADDRESS rather then for CONFIG_OF.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/video/fbdev/simplefb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c
index 92cac80..1085c04 100644
--- a/drivers/video/fbdev/simplefb.c
+++ b/drivers/video/fbdev/simplefb.c
@@ -402,7 +402,7 @@ static int __init simplefb_init(void)
if (ret)
return ret;
- if (IS_ENABLED(CONFIG_OF) && of_chosen) {
+ if (IS_ENABLED(CONFIG_OF_ADDRESS) && of_chosen) {
for_each_child_of_node(of_chosen, np) {
if (of_device_is_compatible(np, "simple-framebuffer"))
of_platform_device_create(np, NULL, NULL);
--
2.1.0
^ permalink raw reply related
* RE: SSD1306 OLED driver
From: Ssagarr Patil @ 2015-01-05 11:15 UTC (permalink / raw)
To: linux-fbdev
In-Reply-To: <BAY176-W246A4D5C3A23D1928FC5D3D38C0@phx.gbl>
Hi Maxime,
>
> On Fri, Nov 14, 2014 at 05:09:09PM +0530, Ssagarr Patil wrote:
>> Hi,
>>
>> I have the SSD1306 oled device connected via spi, will the same
>> driver work ? as the current one is based on i2c what all mods would
>> be required to have it working with SPI ?
>
> It won't work out of the box, but it should be fairly easy to support.
>
> You need to had support for SPI probing, and then provide some generic
> accessors the rest of the code can use to wrap around the i2c and spi
> calls.
>
I have done the spi probing stuff, now only stuck with changing this to SPI calls,
static int ssd1307fb_write_array(struct i2c_client *client,
struct ssd1307fb_array *array, u32 len)
{
int ret;
len += sizeof(struct ssd1307fb_array);
ret = i2c_master_send(client, (u8 *)array, len);
if (ret != len) {
dev_err(&client->dev, "Couldn't send I2C command.\n");
return ret;
}
return 0;
}
Any help on this would be appreciated!
Thanks,
Sagar
^ permalink raw reply
* Re: [PATCH] simplefb: Fix build failure on Sparc
From: Tomi Valkeinen @ 2015-01-05 11:17 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1420445716-13468-1-git-send-email-hdegoede@redhat.com>
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On 05/01/15 10:15, Hans de Goede wrote:
> of_platform_device_create is only defined when CONFIG_OF_ADDRESS is set,
> which is normally always the case when CONFIG_OF is defined, except on Sparc,
> so explicitly check for CONFIG_OF_ADDRESS rather then for CONFIG_OF.
>
> Reported-by: kbuild test robot <fengguang.wu@intel.com>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
> drivers/video/fbdev/simplefb.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c
> index 92cac80..1085c04 100644
> --- a/drivers/video/fbdev/simplefb.c
> +++ b/drivers/video/fbdev/simplefb.c
> @@ -402,7 +402,7 @@ static int __init simplefb_init(void)
> if (ret)
> return ret;
>
> - if (IS_ENABLED(CONFIG_OF) && of_chosen) {
> + if (IS_ENABLED(CONFIG_OF_ADDRESS) && of_chosen) {
> for_each_child_of_node(of_chosen, np) {
> if (of_device_is_compatible(np, "simple-framebuffer"))
> of_platform_device_create(np, NULL, NULL);
>
Doesn't this depend on the compiler optimizing the
of_platform_device_create call away? Isn't that rather dangerous assumption?
Tomi
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* Re: [PATCH] simplefb: Fix build failure on Sparc
From: Hans de Goede @ 2015-01-05 11:21 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <54AA72CB.1020303@ti.com>
Hi,
On 05-01-15 12:17, Tomi Valkeinen wrote:
> On 05/01/15 10:15, Hans de Goede wrote:
>> of_platform_device_create is only defined when CONFIG_OF_ADDRESS is set,
>> which is normally always the case when CONFIG_OF is defined, except on Sparc,
>> so explicitly check for CONFIG_OF_ADDRESS rather then for CONFIG_OF.
>>
>> Reported-by: kbuild test robot <fengguang.wu@intel.com>
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>> drivers/video/fbdev/simplefb.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c
>> index 92cac80..1085c04 100644
>> --- a/drivers/video/fbdev/simplefb.c
>> +++ b/drivers/video/fbdev/simplefb.c
>> @@ -402,7 +402,7 @@ static int __init simplefb_init(void)
>> if (ret)
>> return ret;
>>
>> - if (IS_ENABLED(CONFIG_OF) && of_chosen) {
>> + if (IS_ENABLED(CONFIG_OF_ADDRESS) && of_chosen) {
>> for_each_child_of_node(of_chosen, np) {
>> if (of_device_is_compatible(np, "simple-framebuffer"))
>> of_platform_device_create(np, NULL, NULL);
>>
>
> Doesn't this depend on the compiler optimizing the
> of_platform_device_create call away?
Yes it does.
> Isn't that rather dangerous assumption?
The kernel relies on being build with optimization enabled in various places,
this specific construction was suggested during review (by Grant Likely IIRC)
I initially had an #ifdef here. Note that this construction is used in various
places throughout the kernel and it seems to be used more and more often.
Regards,
Hans
^ permalink raw reply
* Re: [PATCH] simplefb: Fix build failure on Sparc
From: Tomi Valkeinen @ 2015-01-05 12:13 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <54AA73D1.3@redhat.com>
[-- Attachment #1: Type: text/plain, Size: 1897 bytes --]
On 05/01/15 13:21, Hans de Goede wrote:
> Hi,
>
> On 05-01-15 12:17, Tomi Valkeinen wrote:
>> On 05/01/15 10:15, Hans de Goede wrote:
>>> of_platform_device_create is only defined when CONFIG_OF_ADDRESS is set,
>>> which is normally always the case when CONFIG_OF is defined, except
>>> on Sparc,
>>> so explicitly check for CONFIG_OF_ADDRESS rather then for CONFIG_OF.
>>>
>>> Reported-by: kbuild test robot <fengguang.wu@intel.com>
>>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>>> ---
>>> drivers/video/fbdev/simplefb.c | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/video/fbdev/simplefb.c
>>> b/drivers/video/fbdev/simplefb.c
>>> index 92cac80..1085c04 100644
>>> --- a/drivers/video/fbdev/simplefb.c
>>> +++ b/drivers/video/fbdev/simplefb.c
>>> @@ -402,7 +402,7 @@ static int __init simplefb_init(void)
>>> if (ret)
>>> return ret;
>>>
>>> - if (IS_ENABLED(CONFIG_OF) && of_chosen) {
>>> + if (IS_ENABLED(CONFIG_OF_ADDRESS) && of_chosen) {
>>> for_each_child_of_node(of_chosen, np) {
>>> if (of_device_is_compatible(np, "simple-framebuffer"))
>>> of_platform_device_create(np, NULL, NULL);
>>>
>>
>> Doesn't this depend on the compiler optimizing the
>> of_platform_device_create call away?
>
> Yes it does.
>
>> Isn't that rather dangerous assumption?
>
> The kernel relies on being build with optimization enabled in various
> places,
> this specific construction was suggested during review (by Grant Likely
> IIRC)
> I initially had an #ifdef here. Note that this construction is used in
> various
> places throughout the kernel and it seems to be used more and more often.
Ok. Well, I can't say I'm very happy about that, but if that's the
common accepted way, I'm fine. I'll queue this for fbdev fixes.
Tomi
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* Re: [PATCH] atyfb: mark DMI system id table as __initconst
From: Tomi Valkeinen @ 2015-01-05 12:53 UTC (permalink / raw)
To: linux-fbdev
In-Reply-To: <1420380274-8015-1-git-send-email-minipli@googlemail.com>
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On 04/01/15 16:04, Mathias Krause wrote:
> We can mark the DMI system id table as __initconst by using a helper
> variable that'll tell us if we need to unregister the reboot notifier in
> atyfb_exit() instead of matching the DMI system id again.
>
> This frees up ~680 bytes of runtime memory, the DMI table occupies.
>
> Signed-off-by: Mathias Krause <minipli@googlemail.com>
> ---
> drivers/video/fbdev/aty/atyfb_base.c | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)
Thanks, queued for 3.20.
Tomi
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^ permalink raw reply
* Re: [PATCH] fbdev: geocode: remove unneeded NULL check
From: Tomi Valkeinen @ 2015-01-05 12:57 UTC (permalink / raw)
To: Sudip Mukherjee, Jean-Christophe Plagniol-Villard
Cc: linux-geode, linux-fbdev, linux-kernel
In-Reply-To: <1420008938-18423-1-git-send-email-sudipm.mukherjee@gmail.com>
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On 31/12/14 08:55, Sudip Mukherjee wrote:
> the check for info is not required as we are checking it immediately
> after gx1fb_init_fbinfo() and returnig -ENOMEM if it is NULL.
>
> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
> ---
> drivers/video/fbdev/geode/gx1fb_core.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/video/fbdev/geode/gx1fb_core.c b/drivers/video/fbdev/geode/gx1fb_core.c
> index 2794ba1..9bee874 100644
> --- a/drivers/video/fbdev/geode/gx1fb_core.c
> +++ b/drivers/video/fbdev/geode/gx1fb_core.c
> @@ -374,10 +374,8 @@ static int gx1fb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> release_mem_region(gx1_gx_base() + 0x8300, 0x100);
> }
>
> - if (info) {
> - fb_dealloc_cmap(&info->cmap);
> - framebuffer_release(info);
> - }
> + fb_dealloc_cmap(&info->cmap);
> + framebuffer_release(info);
>
> return ret;
> }
>
Thanks, queued for 3.20.
Tomi
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* [PATCH] fbdev: omap2: Fix typo in tvc_probe_pdata
From: Rasmus Villemoes @ 2015-01-05 13:09 UTC (permalink / raw)
To: Tomi Valkeinen, Jean-Christophe Plagniol-Villard
Cc: Rasmus Villemoes, linux-omap, linux-fbdev, linux-kernel
Assigning ddata->invert_polarity to itself is not very useful; the
context suggests that the right-hand side should have been
pdata->invert_polarity.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
drivers/video/fbdev/omap2/displays-new/connector-analog-tv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/omap2/displays-new/connector-analog-tv.c b/drivers/video/fbdev/omap2/displays-new/connector-analog-tv.c
index 9a2b5ce58545..8511c648a15c 100644
--- a/drivers/video/fbdev/omap2/displays-new/connector-analog-tv.c
+++ b/drivers/video/fbdev/omap2/displays-new/connector-analog-tv.c
@@ -208,7 +208,7 @@ static int tvc_probe_pdata(struct platform_device *pdev)
ddata->in = in;
ddata->connector_type = pdata->connector_type;
- ddata->invert_polarity = ddata->invert_polarity;
+ ddata->invert_polarity = pdata->invert_polarity;
dssdev = &ddata->dssdev;
dssdev->name = pdata->name;
--
2.1.3
^ permalink raw reply related
* Re: SSD1306 OLED driver
From: maxime.ripard @ 2015-01-05 13:47 UTC (permalink / raw)
To: linux-fbdev
In-Reply-To: <BAY176-W246A4D5C3A23D1928FC5D3D38C0@phx.gbl>
[-- Attachment #1: Type: text/plain, Size: 1484 bytes --]
On Mon, Jan 05, 2015 at 04:33:22PM +0530, Ssagarr Patil wrote:
> Hi Maxime,
>
> >
> > On Fri, Nov 14, 2014 at 05:09:09PM +0530, Ssagarr Patil wrote:
> >> Hi,
> >>
> >> I have the SSD1306 oled device connected via spi, will the same
> >> driver work ? as the current one is based on i2c what all mods would
> >> be required to have it working with SPI ?
> >
> > It won't work out of the box, but it should be fairly easy to support.
> >
> > You need to had support for SPI probing, and then provide some generic
> > accessors the rest of the code can use to wrap around the i2c and spi
> > calls.
> >
> I have done the spi probing stuff, now only stuck with changing this to SPI calls,
>
> static int ssd1307fb_write_array(struct i2c_client *client,
> struct ssd1307fb_array *array, u32 len)
> {
> int ret;
>
> len += sizeof(struct ssd1307fb_array);
>
> ret = i2c_master_send(client, (u8 *)array, len);
> if (ret != len) {
> dev_err(&client->dev, "Couldn't send I2C command.\n");
> return ret;
> }
>
> return 0;
> }
>
> Any help on this would be appreciated!
I'm not sure what help you are expecting.
This is a simple function that takes an array and sends it over I2C.
It's probably even easier with SPI. Have you considered reading
include/spi/spi.h?
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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* [PATCH] video: vt8500lcdfb: remove unneeded continue
From: Sudip Mukherjee @ 2015-01-06 12:57 UTC (permalink / raw)
To: linux-arm-kernel
continue is not needed at the end of a for loop
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---
drivers/video/fbdev/vt8500lcdfb.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/video/fbdev/vt8500lcdfb.c b/drivers/video/fbdev/vt8500lcdfb.c
index ffaf29e..6716bf5 100644
--- a/drivers/video/fbdev/vt8500lcdfb.c
+++ b/drivers/video/fbdev/vt8500lcdfb.c
@@ -115,7 +115,6 @@ static int vt8500lcd_set_par(struct fb_info *info)
for (i = 0; i < 8; i++) {
if (bpp_values[i] = info->var.bits_per_pixel) {
reg_bpp = i;
- continue;
}
}
--
1.8.1.2
^ permalink raw reply related
* [PATCH] fbdev: geocode: remove unneeded NULL check
From: Sudip Mukherjee @ 2015-01-06 12:57 UTC (permalink / raw)
To: Jean-Christophe Plagniol-Villard, Tomi Valkeinen
Cc: Sudip Mukherjee, linux-geode, linux-fbdev, linux-kernel
In-Reply-To: <1420548302-11489-1-git-send-email-sudipm.mukherjee@gmail.com>
the check for info is not required as we are checking it immediately
after gxfb_init_fbinfo() and lxfb_init_fbinfo() and returnig -ENOMEM
if it is NULL.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---
Hi Tomi,
This patch is similar to my last patch which you have already queued
for 3.20. if you can revert that then i can send you a single patch
with all these three changes together.
drivers/video/fbdev/geode/gxfb_core.c | 6 ++----
drivers/video/fbdev/geode/lxfb_core.c | 6 ++----
2 files changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/video/fbdev/geode/gxfb_core.c b/drivers/video/fbdev/geode/gxfb_core.c
index 1790f14..124d7c7 100644
--- a/drivers/video/fbdev/geode/gxfb_core.c
+++ b/drivers/video/fbdev/geode/gxfb_core.c
@@ -444,10 +444,8 @@ static int gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
pci_release_region(pdev, 1);
}
- if (info) {
- fb_dealloc_cmap(&info->cmap);
- framebuffer_release(info);
- }
+ fb_dealloc_cmap(&info->cmap);
+ framebuffer_release(info);
return ret;
}
diff --git a/drivers/video/fbdev/geode/lxfb_core.c b/drivers/video/fbdev/geode/lxfb_core.c
index 9e1d19d..138da6c 100644
--- a/drivers/video/fbdev/geode/lxfb_core.c
+++ b/drivers/video/fbdev/geode/lxfb_core.c
@@ -577,10 +577,8 @@ err:
pci_release_region(pdev, 3);
}
- if (info) {
- fb_dealloc_cmap(&info->cmap);
- framebuffer_release(info);
- }
+ fb_dealloc_cmap(&info->cmap);
+ framebuffer_release(info);
return ret;
}
--
1.8.1.2
^ permalink raw reply related
* RE: SSD1306 OLED driver
From: Ssagarr Patil @ 2015-01-06 13:12 UTC (permalink / raw)
To: linux-fbdev
In-Reply-To: <BAY176-W246A4D5C3A23D1928FC5D3D38C0@phx.gbl>
Hi Maxime,
>>>
>>> You need to had support for SPI probing, and then provide some generic
>>> accessors the rest of the code can use to wrap around the i2c and spi
>>> calls.
>>>
>> I have done the spi probing stuff, now only stuck with changing this to SPI calls,
>>
>> static int ssd1307fb_write_array(struct i2c_client *client,
>> struct ssd1307fb_array *array, u32 len)
>> {
>> int ret;
>>
>> len += sizeof(struct ssd1307fb_array);
>>
>> ret = i2c_master_send(client, (u8 *)array, len);
>> if (ret != len) {
>> dev_err(&client->dev, "Couldn't send I2C command.\n");
>> return ret;
>> }
>>
>> return 0;
>> }
>>
>> Any help on this would be appreciated!
>
> I'm not sure what help you are expecting.
>
> This is a simple function that takes an array and sends it over I2C.
>
> It's probably even easier with SPI. Have you considered reading
> include/spi/spi.h?
>
Thanks for the pointer, I am using spi_write() call and I see /dev/fb0 node created.
but when I do echo "1121"> /dev/fb0 nothing comes up on oled any pointers on this ?
Thanks & Regards,
--Sagar
^ permalink raw reply
* [PATCH] fbdev: savage: remove unused variable
From: Sudip Mukherjee @ 2015-01-06 13:24 UTC (permalink / raw)
To: Antonino Daplas, Jean-Christophe Plagniol-Villard, Tomi Valkeinen
Cc: Sudip Mukherjee, linux-fbdev, linux-kernel
vga_in8() was storing the return value in tmp, but that return value
was never used again. so it should be safe to remove those variables.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---
just one doubt:
vga_in8() is calling savage_in8() which is a readb().
so in effect we are reading one byte from
(par->mmio.vbase + 0x8000 + 0x3da) and then discarding that value.
so if we are discarding that value then why we are reading it?
drivers/video/fbdev/savage/savagefb.h | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/video/fbdev/savage/savagefb.h b/drivers/video/fbdev/savage/savagefb.h
index dcaab90..8ff4ab1 100644
--- a/drivers/video/fbdev/savage/savagefb.h
+++ b/drivers/video/fbdev/savage/savagefb.h
@@ -351,32 +351,26 @@ static inline void VGAwSEQ(u8 index, u8 val, struct savagefb_par *par)
static inline void VGAenablePalette(struct savagefb_par *par)
{
- u8 tmp;
-
- tmp = vga_in8(0x3da, par);
+ vga_in8(0x3da, par);
vga_out8(0x3c0, 0x00, par);
par->paletteEnabled = 1;
}
static inline void VGAdisablePalette(struct savagefb_par *par)
{
- u8 tmp;
-
- tmp = vga_in8(0x3da, par);
+ vga_in8(0x3da, par);
vga_out8(0x3c0, 0x20, par);
par->paletteEnabled = 0;
}
static inline void VGAwATTR(u8 index, u8 value, struct savagefb_par *par)
{
- u8 tmp;
-
if (par->paletteEnabled)
index &= ~0x20;
else
index |= 0x20;
- tmp = vga_in8(0x3da, par);
+ vga_in8(0x3da, par);
vga_out8(0x3c0, index, par);
vga_out8 (0x3c0, value, par);
}
--
1.8.1.2
^ permalink raw reply related
* Re: [PATCH] video: vt8500lcdfb: remove unneeded continue
From: Sergei Shtylyov @ 2015-01-06 18:31 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1420548302-11489-1-git-send-email-sudipm.mukherjee@gmail.com>
Hello.
On 01/06/2015 03:45 PM, Sudip Mukherjee wrote:
> continue is not needed at the end of a for loop
> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
> ---
> drivers/video/fbdev/vt8500lcdfb.c | 1 -
> 1 file changed, 1 deletion(-)
> diff --git a/drivers/video/fbdev/vt8500lcdfb.c b/drivers/video/fbdev/vt8500lcdfb.c
> index ffaf29e..6716bf5 100644
> --- a/drivers/video/fbdev/vt8500lcdfb.c
> +++ b/drivers/video/fbdev/vt8500lcdfb.c
> @@ -115,7 +115,6 @@ static int vt8500lcd_set_par(struct fb_info *info)
> for (i = 0; i < 8; i++) {
> if (bpp_values[i] = info->var.bits_per_pixel) {
> reg_bpp = i;
> - continue;
> }
{} are not needed any more either. ;-)
[...]
WBR, Sergei
^ permalink raw reply
* [PATCH v10 0/6] Add Skyworks SKY81452 device drivers
From: gyungoh @ 2015-01-07 2:19 UTC (permalink / raw)
To: sameo, lee.jones, grant.likely, robh+dt, jg1.han, cooloney,
pawel.moll, mark.rutland, ijc+devicetree, galak, trivial
Cc: akpm, jic23, thomas.petazzoni, ktsai, hs, stwiss.opensource,
matti.vaittinen, broonie, jason, heiko, shawn.guo,
florian.vaussard, andrew, antonynpavlov, hytszk, plagnioj,
tomi.valkeinen, jack.yoo, linux-fbdev, linux-kernel, devicetree
In-Reply-To: <1417590332-4912-1-git-send-email-jack.yoo@skyworksinc.com>
From: Gyungoh Yoo <jack.yoo@skyworksinc.com>
This patch set includes regulator and backlight driver for SKY81452.
Also it includes documents for device tree and module.
sky81452-regulator was already applied. So this series doesn't
include it.
v10:
Removed trivial get_brightness implementations for sky81452-backlight
v9:
Removed the change to remove MODULE_VERSION() for sky81452-regulator
v8:
Renamed property names for backlight with vendor prefix
Modified gpio-enable property to generic property for GPIO
Made up the example for backlight DT
Changed the DT parsing of regulator using regulator_node and of_match
v7:
Modified licensing text to GPLv2
Splitted Kconfig renaming from DT patch
v6:
Added new line character at the end of line of dev_err()
v5:
Changed DT for regulator : 'lout' node should be defined under 'regulator'
Removed compatible string from sky81452-regulator driver
Modified sky81452-regulator to return EINVAL when of_node is NULL
Move sky81452-backlight.h to include/linux/platform_data
v4:
Removed MODULE_VERSION()
Modified license to GPLv2
Removed calling to backlight_device_unregister() in sky81452-backlight
v3:
Cleaned-up DBG messages
Cleaned-up DT
Fixed the backlight name from 'sky81452-bl' to 'sky81452-backlight'
Assigned mfd_cell.of_compatible for binding device node
Modified error messages
Modified sky81452-regulator to return ENODATA when of_node is NULL
v2:
Split the patches for each sub-system
Added 'reg' attribute for I2C address in device tree documents
Added 'compatible' attribute in child drivers
Renamed CONFIG_SKY81452 to CONFIG_MFD_SKY81452
Changed the dependency from I2C=y to I2C, for CONFIG_MFD_SKY81452
Added message for exception or errors.
Added vendor prefix for Skyworks Solutions, Inc.
Add SKY81452 to the Trivial Devices list
Gyungoh Yoo (6):
mfd: Add support for Skyworks SKY81452 driver
backlight: Add support Skyworks SKY81452 backlight driver
devicetree: mfd: Add new SKY81452 mfd binding
devicetree: backlight: Add new SKY81452 backlight binding
devicetree: Add vendor prefix for Skyworks Solutions, Inc.
devicetree: i2c: Add SKY81452 to the Trivial Devices list
.../devicetree/bindings/i2c/trivial-devices.txt | 1 +
Documentation/devicetree/bindings/mfd/sky81452.txt | 36 +++
.../devicetree/bindings/vendor-prefixes.txt | 1 +
.../video/backlight/sky81452-backlight.txt | 29 ++
drivers/mfd/Kconfig | 12 +
drivers/mfd/Makefile | 1 +
drivers/mfd/sky81452.c | 108 +++++++
drivers/video/backlight/Kconfig | 10 +
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/sky81452-backlight.c | 334 +++++++++++++++++++++
include/linux/mfd/sky81452.h | 31 ++
include/linux/platform_data/sky81452-backlight.h | 46 +++
12 files changed, 610 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/sky81452.txt
create mode 100644 Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
create mode 100644 drivers/mfd/sky81452.c
create mode 100644 drivers/video/backlight/sky81452-backlight.c
create mode 100644 include/linux/mfd/sky81452.h
create mode 100644 include/linux/platform_data/sky81452-backlight.h
--
1.9.1
^ permalink raw reply
* [PATCH v10 1/6] mfd: Add support for Skyworks SKY81452 driver
From: gyungoh @ 2015-01-07 2:19 UTC (permalink / raw)
To: sameo, lee.jones, grant.likely, robh+dt, jg1.han, cooloney,
pawel.moll, mark.rutland, ijc+devicetree, galak, trivial
Cc: akpm, jic23, thomas.petazzoni, ktsai, hs, stwiss.opensource,
matti.vaittinen, broonie, jason, heiko, shawn.guo,
florian.vaussard, andrew, antonynpavlov, hytszk, plagnioj,
tomi.valkeinen, jack.yoo, linux-fbdev, linux-kernel, devicetree
In-Reply-To: <1420597167-3188-1-git-send-email-jack.yoo@skyworksinc.com>
From: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
---
Changes v10:
Nothing
Changes v9:
Nothing
Changes v8:
Nothing
Changes v7:
Modified licensing text to GPLv2
Changes v6:
Added new line character at the end of line of dev_err()
Changes v5:
Move sky81452-backlight.h to include/linux/platform_data
Changes v4:
Removed MODULE_VERSION()
Modified license to GPLv2
Changes v3:
Fixed the backlight name from 'sky81452-bl' to 'sky81452-backlight'
Assigned mfd_cell.of_compatible for binding device node
Modified error messages
Changes v2:
Renamed CONFIG_SKY81452 to CONFIG_MFD_SKY81452
Changed the dependency from I2C=y to I2C, for CONFIG_MFD_SKY81452
Added message for exception or errors
drivers/mfd/Kconfig | 12 +++++
drivers/mfd/Makefile | 1 +
drivers/mfd/sky81452.c | 108 +++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/sky81452.h | 31 +++++++++++++
4 files changed, 152 insertions(+)
create mode 100644 drivers/mfd/sky81452.c
create mode 100644 include/linux/mfd/sky81452.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 1456ea7..a54244c 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -693,6 +693,18 @@ config MFD_SM501_GPIO
lines on the SM501. The platform data is used to supply the
base number for the first GPIO line to register.
+config MFD_SKY81452
+ tristate "Skyworks Solutions SKY81452"
+ select MFD_CORE
+ select REGMAP_I2C
+ depends on I2C
+ help
+ This is the core driver for the Skyworks SKY81452 backlight and
+ voltage regulator device.
+
+ This driver can also be built as a module. If so, the module
+ will be called sky81452.
+
config MFD_SMSC
bool "SMSC ECE1099 series chips"
depends on I2C=y
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 8bd54b1..d9683ea 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -174,6 +174,7 @@ obj-$(CONFIG_MFD_STW481X) += stw481x.o
obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o
obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o
obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o
+obj-$(CONFIG_MFD_SKY81452) += sky81452.o
intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o
obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o
diff --git a/drivers/mfd/sky81452.c b/drivers/mfd/sky81452.c
new file mode 100644
index 0000000..b0c9b04
--- /dev/null
+++ b/drivers/mfd/sky81452.c
@@ -0,0 +1,108 @@
+/*
+ * sky81452.c SKY81452 MFD driver
+ *
+ * Copyright 2014 Skyworks Solutions Inc.
+ * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/sky81452.h>
+
+static const struct regmap_config sky81452_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int sky81452_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ const struct sky81452_platform_data *pdata = dev_get_platdata(dev);
+ struct mfd_cell cells[2];
+ struct regmap *regmap;
+ int ret;
+
+ if (!pdata) {
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ }
+
+ regmap = devm_regmap_init_i2c(client, &sky81452_config);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "failed to initialize.err=%ld\n", PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
+ i2c_set_clientdata(client, regmap);
+
+ memset(cells, 0, sizeof(cells));
+ cells[0].name = "sky81452-backlight";
+ cells[0].of_compatible = "skyworks,sky81452-backlight";
+ cells[0].platform_data = pdata->bl_pdata;
+ cells[0].pdata_size = sizeof(*pdata->bl_pdata);
+ cells[1].name = "sky81452-regulator";
+ cells[1].platform_data = pdata->regulator_init_data;
+ cells[1].pdata_size = sizeof(*pdata->regulator_init_data);
+
+ ret = mfd_add_devices(dev, -1, cells, ARRAY_SIZE(cells), NULL, 0, NULL);
+ if (ret)
+ dev_err(dev, "failed to add child devices. err=%d\n", ret);
+
+ return ret;
+}
+
+static int sky81452_remove(struct i2c_client *client)
+{
+ mfd_remove_devices(&client->dev);
+ return 0;
+}
+
+static const struct i2c_device_id sky81452_ids[] = {
+ { "sky81452" },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sky81452_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id sky81452_of_match[] = {
+ { .compatible = "skyworks,sky81452", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sky81452_of_match);
+#endif
+
+static struct i2c_driver sky81452_driver = {
+ .driver = {
+ .name = "sky81452",
+ .of_match_table = of_match_ptr(sky81452_of_match),
+ },
+ .probe = sky81452_probe,
+ .remove = sky81452_remove,
+ .id_table = sky81452_ids,
+};
+
+module_i2c_driver(sky81452_driver);
+
+MODULE_DESCRIPTION("Skyworks SKY81452 MFD driver");
+MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/sky81452.h b/include/linux/mfd/sky81452.h
new file mode 100644
index 0000000..b0925fa
--- /dev/null
+++ b/include/linux/mfd/sky81452.h
@@ -0,0 +1,31 @@
+/*
+ * sky81452.h SKY81452 MFD driver
+ *
+ * Copyright 2014 Skyworks Solutions Inc.
+ * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SKY81452_H
+#define _SKY81452_H
+
+#include <linux/platform_data/sky81452-backlight.h>
+#include <linux/regulator/machine.h>
+
+struct sky81452_platform_data {
+ struct sky81452_bl_platform_data *bl_pdata;
+ struct regulator_init_data *regulator_init_data;
+};
+
+#endif
--
1.9.1
^ permalink raw reply related
* [PATCH v10 2/6] backlight: Add support Skyworks SKY81452 backlight driver
From: gyungoh @ 2015-01-07 2:19 UTC (permalink / raw)
To: sameo, lee.jones, grant.likely, robh+dt, jg1.han, cooloney,
pawel.moll, mark.rutland, ijc+devicetree, galak, trivial
Cc: akpm, jic23, thomas.petazzoni, ktsai, hs, stwiss.opensource,
matti.vaittinen, broonie, jason, heiko, shawn.guo,
florian.vaussard, andrew, antonynpavlov, hytszk, plagnioj,
tomi.valkeinen, jack.yoo, linux-fbdev, linux-kernel, devicetree
In-Reply-To: <1420597167-3188-1-git-send-email-jack.yoo@skyworksinc.com>
From: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
---
Changes v10:
Removed trivial get_brightness implementations
Changes v9:
Nothing
Changes v8:
Renamed property names for backlight with vendor prefix
Modified gpio-enable property to generic property for GPIO
Changes v7:
Modified licensing text to GPLv2
Changes v6:
Added new line character at the end of line of dev_err()
Changes v5:
Move sky81452-backlight.h to include/linux/platform_data
Changes v4:
Reordering header files for readability
Removed calling to backlight_device_unregister()
Removed MODULE_VERSION()
Modified license to GPLv2
Changes v3:
Modified DBG messages
Changes v2:
Added 'compatible' attribute in the driver
Added message for exception or errors
drivers/video/backlight/Kconfig | 10 +
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/sky81452-backlight.c | 334 +++++++++++++++++++++++
include/linux/platform_data/sky81452-backlight.h | 46 ++++
4 files changed, 391 insertions(+)
create mode 100644 drivers/video/backlight/sky81452-backlight.c
create mode 100644 include/linux/platform_data/sky81452-backlight.h
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 8d03924..2586fdd 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -409,6 +409,16 @@ config BACKLIGHT_PANDORA
If you have a Pandora console, say Y to enable the
backlight driver.
+config BACKLIGHT_SKY81452
+ tristate "Backlight driver for SKY81452"
+ depends on BACKLIGHT_CLASS_DEVICE && MFD_SKY81452
+ help
+ If you have a Skyworks SKY81452, say Y to enable the
+ backlight driver.
+
+ To compile this driver as a module, choose M here: the module will
+ be called sky81452-backlight
+
config BACKLIGHT_TPS65217
tristate "TPS65217 Backlight"
depends on BACKLIGHT_CLASS_DEVICE && MFD_TPS65217
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index fcd50b73..d67073f 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_BACKLIGHT_PANDORA) += pandora_bl.o
obj-$(CONFIG_BACKLIGHT_PCF50633) += pcf50633-backlight.o
obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o
obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o
+obj-$(CONFIG_BACKLIGHT_SKY81452) += sky81452-backlight.o
obj-$(CONFIG_BACKLIGHT_TOSA) += tosa_bl.o
obj-$(CONFIG_BACKLIGHT_TPS65217) += tps65217_bl.o
obj-$(CONFIG_BACKLIGHT_WM831X) += wm831x_bl.o
diff --git a/drivers/video/backlight/sky81452-backlight.c b/drivers/video/backlight/sky81452-backlight.c
new file mode 100644
index 0000000..8105597
--- /dev/null
+++ b/drivers/video/backlight/sky81452-backlight.c
@@ -0,0 +1,334 @@
+/*
+ * sky81452-backlight.c SKY81452 backlight driver
+ *
+ * Copyright 2014 Skyworks Solutions Inc.
+ * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/platform_data/sky81452-backlight.h>
+#include <linux/slab.h>
+
+/* registers */
+#define SKY81452_REG0 0x00
+#define SKY81452_REG1 0x01
+#define SKY81452_REG2 0x02
+#define SKY81452_REG4 0x04
+#define SKY81452_REG5 0x05
+
+/* bit mask */
+#define SKY81452_CS 0xFF
+#define SKY81452_EN 0x3F
+#define SKY81452_IGPW 0x20
+#define SKY81452_PWMMD 0x10
+#define SKY81452_PHASE 0x08
+#define SKY81452_ILIM 0x04
+#define SKY81452_VSHRT 0x03
+#define SKY81452_OCP 0x80
+#define SKY81452_OTMP 0x40
+#define SKY81452_SHRT 0x3F
+#define SKY81452_OPN 0x3F
+
+#define SKY81452_DEFAULT_NAME "lcd-backlight"
+#define SKY81452_MAX_BRIGHTNESS (SKY81452_CS + 1)
+
+#define CTZ(b) __builtin_ctz(b)
+
+static int sky81452_bl_update_status(struct backlight_device *bd)
+{
+ const struct sky81452_bl_platform_data *pdata + dev_get_platdata(bd->dev.parent);
+ const unsigned int brightness = (unsigned int)bd->props.brightness;
+ struct regmap *regmap = bl_get_data(bd);
+ int ret;
+
+ if (brightness > 0) {
+ ret = regmap_write(regmap, SKY81452_REG0, brightness - 1);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ return regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN,
+ pdata->enable << CTZ(SKY81452_EN));
+ }
+
+ return regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN, 0);
+}
+
+static const struct backlight_ops sky81452_bl_ops = {
+ .update_status = sky81452_bl_update_status,
+};
+
+static ssize_t sky81452_bl_store_enable(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct regmap *regmap = bl_get_data(to_backlight_device(dev));
+ unsigned long value;
+ int ret;
+
+ ret = kstrtoul(buf, 16, &value);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ ret = regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN,
+ value << CTZ(SKY81452_EN));
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ return count;
+}
+
+static ssize_t sky81452_bl_show_open_short(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct regmap *regmap = bl_get_data(to_backlight_device(dev));
+ unsigned int reg, value = 0;
+ char tmp[3];
+ int i, ret;
+
+ reg = !strcmp(attr->attr.name, "open") ? SKY81452_REG5 : SKY81452_REG4;
+ ret = regmap_read(regmap, reg, &value);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ if (value & SKY81452_SHRT) {
+ *buf = 0;
+ for (i = 0; i < 6; i++) {
+ if (value & 0x01) {
+ sprintf(tmp, "%d ", i + 1);
+ strcat(buf, tmp);
+ }
+ value >>= 1;
+ }
+ strcat(buf, "\n");
+ } else {
+ strcpy(buf, "none\n");
+ }
+
+ return strlen(buf);
+}
+
+static ssize_t sky81452_bl_show_fault(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct regmap *regmap = bl_get_data(to_backlight_device(dev));
+ unsigned int value = 0;
+ int ret;
+
+ ret = regmap_read(regmap, SKY81452_REG4, &value);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+
+ *buf = 0;
+
+ if (value & SKY81452_OCP)
+ strcat(buf, "over-current ");
+
+ if (value & SKY81452_OTMP)
+ strcat(buf, "over-temperature");
+
+ strcat(buf, "\n");
+ return strlen(buf);
+}
+
+static DEVICE_ATTR(enable, S_IWGRP | S_IWUSR, NULL, sky81452_bl_store_enable);
+static DEVICE_ATTR(open, S_IRUGO, sky81452_bl_show_open_short, NULL);
+static DEVICE_ATTR(short, S_IRUGO, sky81452_bl_show_open_short, NULL);
+static DEVICE_ATTR(fault, S_IRUGO, sky81452_bl_show_fault, NULL);
+
+static struct attribute *sky81452_bl_attribute[] = {
+ &dev_attr_enable.attr,
+ &dev_attr_open.attr,
+ &dev_attr_short.attr,
+ &dev_attr_fault.attr,
+ NULL
+};
+
+static const struct attribute_group sky81452_bl_attr_group = {
+ .attrs = sky81452_bl_attribute,
+};
+
+#ifdef CONFIG_OF
+static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
+ struct device *dev)
+{
+ struct device_node *np = of_node_get(dev->of_node);
+ struct sky81452_bl_platform_data *pdata;
+ int ret;
+
+ if (!np) {
+ dev_err(dev, "backlight node not found.\n");
+ return ERR_PTR(-ENODATA);
+ }
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ of_node_put(np);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ of_property_read_string(np, "name", &pdata->name);
+ pdata->ignore_pwm = of_property_read_bool(np, "skyworks,ignore-pwm");
+ pdata->dpwm_mode = of_property_read_bool(np, "skyworks,dpwm-mode");
+ pdata->phase_shift = of_property_read_bool(np, "skyworks,phase-shift");
+ pdata->gpio_enable = of_get_gpio(np, 0);
+
+ ret = of_property_read_u32(np, "skyworks,en-channels", &pdata->enable);
+ if (IS_ERR_VALUE(ret))
+ pdata->enable = SKY81452_EN >> CTZ(SKY81452_EN);
+
+ ret = of_property_read_u32(np, "skyworks,short-detection-threshold",
+ &pdata->short_detection_threshold);
+ if (IS_ERR_VALUE(ret))
+ pdata->short_detection_threshold = 7;
+
+ ret = of_property_read_u32(np, "skyworks,current-limit",
+ &pdata->boost_current_limit);
+ if (IS_ERR_VALUE(ret))
+ pdata->boost_current_limit = 2750;
+
+ of_node_put(np);
+ return pdata;
+}
+#else
+static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
+ struct device *dev)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
+
+static int sky81452_bl_init_device(struct regmap *regmap,
+ struct sky81452_bl_platform_data *pdata)
+{
+ unsigned int value;
+
+ value = pdata->ignore_pwm ? SKY81452_IGPW : 0;
+ value |= pdata->dpwm_mode ? SKY81452_PWMMD : 0;
+ value |= pdata->phase_shift ? 0 : SKY81452_PHASE;
+
+ if (pdata->boost_current_limit = 2300)
+ value |= SKY81452_ILIM;
+ else if (pdata->boost_current_limit != 2750)
+ return -EINVAL;
+
+ if (pdata->short_detection_threshold < 4 ||
+ pdata->short_detection_threshold > 7)
+ return -EINVAL;
+ value |= (7 - pdata->short_detection_threshold) << CTZ(SKY81452_VSHRT);
+
+ return regmap_write(regmap, SKY81452_REG2, value);
+}
+
+static int sky81452_bl_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct regmap *regmap = dev_get_drvdata(dev->parent);
+ struct sky81452_bl_platform_data *pdata = dev_get_platdata(dev);
+ struct backlight_device *bd;
+ struct backlight_properties props;
+ const char *name;
+ int ret;
+
+ if (!pdata) {
+ pdata = sky81452_bl_parse_dt(dev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+ }
+
+ if (gpio_is_valid(pdata->gpio_enable)) {
+ ret = devm_gpio_request_one(dev, pdata->gpio_enable,
+ GPIOF_OUT_INIT_HIGH, "sky81452-en");
+ if (IS_ERR_VALUE(ret)) {
+ dev_err(dev, "failed to request GPIO. err=%d\n", ret);
+ return ret;
+ }
+ }
+
+ ret = sky81452_bl_init_device(regmap, pdata);
+ if (IS_ERR_VALUE(ret)) {
+ dev_err(dev, "failed to initialize. err=%d\n", ret);
+ return ret;
+ }
+
+ memset(&props, 0, sizeof(props));
+ props.max_brightness = SKY81452_MAX_BRIGHTNESS,
+ name = pdata->name ? pdata->name : SKY81452_DEFAULT_NAME;
+ bd = devm_backlight_device_register(dev, name, dev, regmap,
+ &sky81452_bl_ops, &props);
+ if (IS_ERR(bd)) {
+ dev_err(dev, "failed to register. err=%ld\n", PTR_ERR(bd));
+ return PTR_ERR(bd);
+ }
+
+ platform_set_drvdata(pdev, bd);
+
+ ret = sysfs_create_group(&bd->dev.kobj, &sky81452_bl_attr_group);
+ if (IS_ERR_VALUE(ret)) {
+ dev_err(dev, "failed to create attribute. err=%d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int sky81452_bl_remove(struct platform_device *pdev)
+{
+ const struct sky81452_bl_platform_data *pdata + dev_get_platdata(&pdev->dev);
+ struct backlight_device *bd = platform_get_drvdata(pdev);
+
+ sysfs_remove_group(&bd->dev.kobj, &sky81452_bl_attr_group);
+
+ bd->props.power = FB_BLANK_UNBLANK;
+ bd->props.brightness = 0;
+ backlight_update_status(bd);
+
+ if (gpio_is_valid(pdata->gpio_enable))
+ gpio_set_value_cansleep(pdata->gpio_enable, 0);
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id sky81452_bl_of_match[] = {
+ { .compatible = "skyworks,sky81452-backlight", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sky81452_bl_of_match);
+#endif
+
+static struct platform_driver sky81452_bl_driver = {
+ .driver = {
+ .name = "sky81452-backlight",
+ .of_match_table = of_match_ptr(sky81452_bl_of_match),
+ },
+ .probe = sky81452_bl_probe,
+ .remove = sky81452_bl_remove,
+};
+
+module_platform_driver(sky81452_bl_driver);
+
+MODULE_DESCRIPTION("Skyworks SKY81452 backlight driver");
+MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/platform_data/sky81452-backlight.h b/include/linux/platform_data/sky81452-backlight.h
new file mode 100644
index 0000000..1231e9b
--- /dev/null
+++ b/include/linux/platform_data/sky81452-backlight.h
@@ -0,0 +1,46 @@
+/*
+ * sky81452.h SKY81452 backlight driver
+ *
+ * Copyright 2014 Skyworks Solutions Inc.
+ * Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SKY81452_BACKLIGHT_H
+#define _SKY81452_BACKLIGHT_H
+
+/**
+ * struct sky81452_platform_data
+ * @name: backlight driver name.
+ If it is not defined, default name is lcd-backlight.
+ * @gpio_enable:GPIO number which control EN pin
+ * @enable: Enable mask for current sink channel 1, 2, 3, 4, 5 and 6.
+ * @ignore_pwm: true if DPWMI should be ignored.
+ * @dpwm_mode: true is DPWM dimming mode, otherwise Analog dimming mode.
+ * @phase_shift:true is phase shift mode.
+ * @short_detecion_threshold: It should be one of 4, 5, 6 and 7V.
+ * @boost_current_limit: It should be one of 2300, 2750mA.
+ */
+struct sky81452_bl_platform_data {
+ const char *name;
+ int gpio_enable;
+ unsigned int enable;
+ bool ignore_pwm;
+ bool dpwm_mode;
+ bool phase_shift;
+ unsigned int short_detection_threshold;
+ unsigned int boost_current_limit;
+};
+
+#endif
--
1.9.1
^ permalink raw reply related
* [PATCH v10 3/6] devicetree: mfd: Add new SKY81452 mfd binding
From: gyungoh @ 2015-01-07 2:19 UTC (permalink / raw)
To: sameo, lee.jones, grant.likely, robh+dt, jg1.han, cooloney,
pawel.moll, mark.rutland, ijc+devicetree, galak, trivial
Cc: akpm, jic23, thomas.petazzoni, ktsai, hs, stwiss.opensource,
matti.vaittinen, broonie, jason, heiko, shawn.guo,
florian.vaussard, andrew, antonynpavlov, hytszk, plagnioj,
tomi.valkeinen, jack.yoo, linux-fbdev, linux-kernel, devicetree
In-Reply-To: <1420597167-3188-1-git-send-email-jack.yoo@skyworksinc.com>
From: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
---
Changes v10:
Nothing
Changes v9:
Nothing
Changes v8:
Made up the example for backlight DT
Changes v7:
Nothing
Changes v6:
Nothing
Changes v5:
Changed DT for regulator : 'lout' node should be defined under 'regulator'
Removed compatible string from sky81452-regulator driver
Changes v4:
Nothing
Changes v3:
Nothing
Changes v2:
Added reg attribute for I2C slave address
Documentation/devicetree/bindings/mfd/sky81452.txt | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/sky81452.txt
diff --git a/Documentation/devicetree/bindings/mfd/sky81452.txt b/Documentation/devicetree/bindings/mfd/sky81452.txt
new file mode 100644
index 0000000..ab71473
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/sky81452.txt
@@ -0,0 +1,36 @@
+SKY81452 bindings
+
+Required properties:
+- compatible : Must be "skyworks,sky81452"
+- reg : I2C slave address
+
+Required child nodes:
+- backlight : container node for backlight following the binding
+ in video/backlight/sky81452-backlight.txt
+- regulator : container node for regulators following the binding
+ in regulator/sky81452-regulator.txt
+
+Example:
+
+ sky81452@2c {
+ compatible = "skyworks,sky81452";
+ reg = <0x2c>;
+
+ backlight {
+ compatible = "skyworks,sky81452-backlight";
+ name = "pwm-backlight";
+ skyworks,en-channels = <0x3f>;
+ skyworks,ignore-pwm;
+ skyworks,phase-shift;
+ skyworks,ovp-level = <20>;
+ skyworks,current-limit = <2300>;
+ };
+
+ regulator {
+ lout {
+ regulator-name = "sky81452-lout";
+ regulator-min-microvolt = <4500000>;
+ regulator-max-microvolt = <8000000>;
+ };
+ };
+ };
--
1.9.1
^ permalink raw reply related
* [PATCH v10 4/6] devicetree: backlight: Add new SKY81452 backlight binding
From: gyungoh @ 2015-01-07 2:19 UTC (permalink / raw)
To: sameo, lee.jones, grant.likely, robh+dt, jg1.han, cooloney,
pawel.moll, mark.rutland, ijc+devicetree, galak, trivial
Cc: akpm, jic23, thomas.petazzoni, ktsai, hs, stwiss.opensource,
matti.vaittinen, broonie, jason, heiko, shawn.guo,
florian.vaussard, andrew, antonynpavlov, hytszk, plagnioj,
tomi.valkeinen, jack.yoo, linux-fbdev, linux-kernel, devicetree
In-Reply-To: <1420597167-3188-1-git-send-email-jack.yoo@skyworksinc.com>
From: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
---
Changes v10:
Nothing
Changes v9:
Nothing
Changes v8:
Renamed property names for backlight with vendor prefix
Modified gpio-enable property to generic property for GPIO
Made up the example for backlight DT
Changes v7:
Nothing
Changes v6:
Nothing
Changes v5:
Nothing
Changes v4:
Nothing
Changes v3:
Nothing
Changes v2:
Added reg attribute for I2C slave address
.../video/backlight/sky81452-backlight.txt | 29 ++++++++++++++++++++++
1 file changed, 29 insertions(+)
create mode 100644 Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
diff --git a/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
new file mode 100644
index 0000000..8daebf5
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
@@ -0,0 +1,29 @@
+SKY81452-backlight bindings
+
+Required properties:
+- compatible : Must be "skyworks,sky81452-backlight"
+
+Optional properties:
+- name : Name of backlight device. Default is 'lcd-backlight'.
+- gpios : GPIO to use to EN pin.
+ See Documentation/devicetree/bindings/gpio/gpio.txt
+- skyworks,en-channels : Enable mask for current sink channel 1 to 6.
+- skyworks,ignore-pwm : Ignore both PWM input
+- skyworks,dpwm-mode : Enable DPWM dimming mode, otherwise Analog dimming.
+- skyworks,phase-shift : Enable phase shift mode
+- skyworks,ovp-level : Over-voltage protection level.
+ Should be between 14 or 28V.
+- skyworks,short-detection-threshold : It should be one of 4, 5, 6 and 7V.
+- skyworks,current-limit : It should be 2300mA or 2750mA.
+
+Example:
+
+ backlight {
+ compatible = "skyworks,sky81452-backlight";
+ name = "pwm-backlight";
+ skyworks,en-channels = <0x3f>;
+ skyworks,ignore-pwm;
+ skyworks,phase-shift;
+ skyworks,ovp-level = <20>;
+ skyworks,current-limit = <2300>;
+ };
--
1.9.1
^ permalink raw reply related
* [PATCH v10 5/6] devicetree: Add vendor prefix for Skyworks Solutions, Inc.
From: gyungoh @ 2015-01-07 2:19 UTC (permalink / raw)
To: sameo, lee.jones, grant.likely, robh+dt, jg1.han, cooloney,
pawel.moll, mark.rutland, ijc+devicetree, galak, trivial
Cc: akpm, jic23, thomas.petazzoni, ktsai, hs, stwiss.opensource,
matti.vaittinen, broonie, jason, heiko, shawn.guo,
florian.vaussard, andrew, antonynpavlov, hytszk, plagnioj,
tomi.valkeinen, jack.yoo, linux-fbdev, linux-kernel, devicetree
In-Reply-To: <1420597167-3188-1-git-send-email-jack.yoo@skyworksinc.com>
From: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
---
Changes v10:
Nothing
Changes v9:
Nothing
Changes v8:
Nothing
Changes v7:
Nothing
Changes v6:
Nothing
Changes v5:
Nothing
Changes v4:
Nothing
Changes v3:
Nothing
Changes v2:
Added vendor prefix for Skyworks Solutions, Inc.
Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index a344ec2..68143f0 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -140,6 +140,7 @@ sii Seiko Instruments, Inc.
silergy Silergy Corp.
sirf SiRF Technology, Inc.
sitronix Sitronix Technology Corporation
+skyworks Skyworks Solutions, Inc.
smsc Standard Microsystems Corporation
snps Synopsys, Inc.
solidrun SolidRun
--
1.9.1
^ permalink raw reply related
* [PATCH v10 6/6] devicetree: i2c: Add SKY81452 to the Trivial Devices list
From: gyungoh @ 2015-01-07 2:19 UTC (permalink / raw)
To: sameo-VuQAYsv1563Yd54FQh9/CA, lee.jones-QSEj5FYQhm4dnm+yROfE0A,
grant.likely-QSEj5FYQhm4dnm+yROfE0A,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A, jg1.han-Sze3O3UU22JBDgjK7y7TUQ,
cooloney-Re5JQEeQqe8AvxtiuMwx3w, pawel.moll-5wv7dgnIgG8,
mark.rutland-5wv7dgnIgG8, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg,
galak-sgV2jX0FEOL9JmXXK+q4OQ, trivial-DgEjT+Ai2ygdnm+yROfE0A
Cc: akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b,
jic23-DgEjT+Ai2ygdnm+yROfE0A,
thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8,
ktsai-GubuWUlQtMwciDkP5Hr2oA, hs-ynQEQJNshbs,
stwiss.opensource-WBD+wuPFNBhBDgjK7y7TUQ,
matti.vaittinen-OYasijW0DpE, broonie-DgEjT+Ai2ygdnm+yROfE0A,
jason-NLaQJdtUoK4Be96aLqz0jA, heiko-4mtYJXux2i+zQB+pC5nmwQ,
shawn.guo-KZfg59tc24xl57MIdRCFDg, florian.vaussard-p8DiymsW2f8,
andrew-g2DYL2Zd6BY, antonynpavlov-Re5JQEeQqe8AvxtiuMwx3w,
hytszk-Re5JQEeQqe8AvxtiuMwx3w, plagnioj-sclMFOaUSTBWk0Htik3J/w,
tomi.valkeinen-l0cyMroinI0, jack.yoo-tjhQNA90jdKqndwCJWfcng,
linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
devicetree-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <1420597167-3188-1-git-send-email-jack.yoo-tjhQNA90jdKqndwCJWfcng@public.gmane.org>
From: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
---
Changes v10:
Nothing
Changes v9:
Nothing
Changes v8:
Nothing
Changes v7:
Nothing
Changes v6:
Nothing
Changes v5:
Nothing
Changes v4:
Nothing
Changes v3:
Nothing
Changes v2:
Add SKY81452 to the Trivial Devices list
Documentation/devicetree/bindings/i2c/trivial-devices.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
index fbde415..122fa1e 100644
--- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
+++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
@@ -77,6 +77,7 @@ ramtron,24c64 i2c serial eeprom (24cxx)
ricoh,rs5c372a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
samsung,24ad0xd1 S524AD0XF1 (128K/256K-bit Serial EEPROM for Low Power)
sii,s35390a 2-wire CMOS real-time clock
+skyworks,sky81452 Skyworks SKY81452: Six-Channel White LED Driver with Touch Panel Bias Supply
st-micro,24c256 i2c serial eeprom (24cxx)
stm,m41t00 Serial Access TIMEKEEPER
stm,m41t62 Serial real-time clock (RTC) with alarm
--
1.9.1
^ permalink raw reply related
* Re: [PATCH] video: vt8500lcdfb: remove unneeded continue
From: Sudip Mukherjee @ 2015-01-07 4:58 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <54AC2A0B.3040807@cogentembedded.com>
On Tue, Jan 06, 2015 at 09:31:39PM +0300, Sergei Shtylyov wrote:
> Hello.
>
> On 01/06/2015 03:45 PM, Sudip Mukherjee wrote:
>
> >continue is not needed at the end of a for loop
>
> >Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
> >---
> > drivers/video/fbdev/vt8500lcdfb.c | 1 -
> > 1 file changed, 1 deletion(-)
>
> >diff --git a/drivers/video/fbdev/vt8500lcdfb.c b/drivers/video/fbdev/vt8500lcdfb.c
> >index ffaf29e..6716bf5 100644
> >--- a/drivers/video/fbdev/vt8500lcdfb.c
> >+++ b/drivers/video/fbdev/vt8500lcdfb.c
> >@@ -115,7 +115,6 @@ static int vt8500lcd_set_par(struct fb_info *info)
> > for (i = 0; i < 8; i++) {
> > if (bpp_values[i] = info->var.bits_per_pixel) {
> > reg_bpp = i;
> >- continue;
> > }
>
> {} are not needed any more either. ;-)
i have noticed that but thought that will be again a different type of change in a single patch.
but now it seems that this patch will introduce a new checkpatch warning, so i should have corrected that in it.
i will send a v2.
thanks
sudip
>
> [...]
>
> WBR, Sergei
>
^ permalink raw reply
* [PATCH v2] video: vt8500lcdfb: remove unneeded continue
From: Sudip Mukherjee @ 2015-01-07 5:47 UTC (permalink / raw)
To: linux-arm-kernel
continue is not needed at the end of a for loop, also removed the
braces which were no longer required.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---
v2: removed braces
drivers/video/fbdev/vt8500lcdfb.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/video/fbdev/vt8500lcdfb.c b/drivers/video/fbdev/vt8500lcdfb.c
index ffaf29e..1a1176b 100644
--- a/drivers/video/fbdev/vt8500lcdfb.c
+++ b/drivers/video/fbdev/vt8500lcdfb.c
@@ -113,10 +113,8 @@ static int vt8500lcd_set_par(struct fb_info *info)
}
for (i = 0; i < 8; i++) {
- if (bpp_values[i] = info->var.bits_per_pixel) {
+ if (bpp_values[i] = info->var.bits_per_pixel)
reg_bpp = i;
- continue;
- }
}
control0 = readl(fbi->regbase) & ~0xf;
--
1.8.1.2
^ permalink raw reply related
* Re: [PATCH v2 0/7] imx-drm: ipuv3-crtc: Implement mode_fixup
From: Philipp Zabel @ 2015-01-07 18:27 UTC (permalink / raw)
To: Steve Longerbeam
Cc: dri-devel, linux-kernel, linux-fbdev, David Airlie,
Jean-Christophe Plagniol-Villard, Tomi Valkeinen, Russell King,
Fabio Estevam, Shawn Guo, Denis Carikli, Jiada Wang,
Steve Longerbeam
In-Reply-To: <1418954426-21909-1-git-send-email-steve_longerbeam@mentor.com>
Am Donnerstag, den 18.12.2014, 18:00 -0800 schrieb Steve Longerbeam:
> This patchset implements ->mode_fixup() in the imx ipuv3-crtc driver,
> using a new support function ipu_di_adjust_videomode(). This new
> function needs to be subsystem independent, so it accepts a video
> mode as a 'struct videomode'. Hence ipu-crtc ->mode_fixup() needs
> another support function to convert a drm_display_mode to a videomode
> before passing the mode to ipu_di_adjust_videomode() for fixup.
>
> Also some related code cleanup: 'struct ipu_di_signal_cfg' should
> use 'struct videomode' for mode timings.
Alright, I have applied the series with
s/videomode_from_drm_display_mode/drm_display_mode_to_videomode/
thanks
Philipp
^ permalink raw reply
* fbdev libraries
From: Ssagarr Patil @ 2015-01-07 20:50 UTC (permalink / raw)
To: linux-fbdev
Hi,
Are there any libraries/tools to test monochrome oleds which of which the driver is based on linux framebuffer framework.
Thanks,
Sagar
^ permalink raw reply
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