[PATCH 1/2] ARM: dts: sun8i: Add lradc node to sun8i-a23.dtsi

[PATCH 1/2] ARM: dts: sun8i: Add lradc node to sun8i-a23.dtsi

[Hans de Goede]

The A23 has the same lradc controller as previous Allwinner SoCs.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 arch/arm/boot/dts/sun8i-a23.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a23.dtsi b/arch/arm/boot/dts/sun8i-a23.dtsi
index a31842d..c2ceafb 100644
--- a/arch/arm/boot/dts/sun8i-a23.dtsi
+++ b/arch/arm/boot/dts/sun8i-a23.dtsi
@@ -419,6 +419,13 @@
 			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		lradc: lradc at 01c22800 {
+			compatible = "allwinner,sun4i-a10-lradc-keys";
+			reg = <0x01c22800 0x100>;
+			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
 		uart0: serial at 01c28000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0x01c28000 0x400>;
-- 
2.1.0

[PATCH 2/2] ARM: dts: sun8i: Enable lradc on a23-ippo-q8h-v5

[Hans de Goede]

The a23-ippo-q8h tablets have volume up/down buttons using the lradc. This
has been tested on both a v5 and a v1.2 tablet.

Tested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts b/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts
index 1da31d0..623573e 100644
--- a/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts
+++ b/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts
@@ -52,6 +52,7 @@
 #include "sunxi-common-regulators.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/sun4i-a10.h>
 
 / {
@@ -86,6 +87,25 @@
 			};
 		};
 
+		lradc: lradc at 01c22800 {
+			vref-supply = <&reg_vcc3v0>;
+			status = "okay";
+
+			button at 200 {
+				label = "Volume Up";
+				linux,code = <KEY_VOLUMEUP>;
+				channel = <0>;
+				voltage = <200000>;
+			};
+
+			button at 400 {
+				label = "Volume Down";
+				linux,code = <KEY_VOLUMEDOWN>;
+				channel = <0>;
+				voltage = <400000>;
+			};
+		};
+
 		i2c0: i2c at 01c2ac00 {
 			pinctrl-names = "default";
 			pinctrl-0 = <&i2c0_pins_a>;
-- 
2.1.0

[PATCH 1/2] ARM: dts: sun8i: Add lradc node to sun8i-a23.dtsi

[Sergei Shtylyov]

Hello.

On 1/13/2015 1:47 PM, Hans de Goede wrote:

> The A23 has the same lradc controller as previous Allwinner SoCs.

> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
>   arch/arm/boot/dts/sun8i-a23.dtsi | 7 +++++++
>   1 file changed, 7 insertions(+)

> diff --git a/arch/arm/boot/dts/sun8i-a23.dtsi b/arch/arm/boot/dts/sun8i-a23.dtsi
> index a31842d..c2ceafb 100644
> --- a/arch/arm/boot/dts/sun8i-a23.dtsi
> +++ b/arch/arm/boot/dts/sun8i-a23.dtsi
> @@ -419,6 +419,13 @@
>   			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
>   		};
>
> +		lradc: lradc at 01c22800 {
> +			compatible = "allwinner,sun4i-a10-lradc-keys";

    If this is a keyboard controller, its node name should probably be 
"keyboard", according to the ePAPR standard...

WBR, Sergei

[PATCH 1/2] ARM: dts: sun8i: Add lradc node to sun8i-a23.dtsi

[Hans de Goede]

Hi,

On 13-01-15 13:11, Sergei Shtylyov wrote:
> Hello.
>
> On 1/13/2015 1:47 PM, Hans de Goede wrote:
>
>> The A23 has the same lradc controller as previous Allwinner SoCs.
>
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>>   arch/arm/boot/dts/sun8i-a23.dtsi | 7 +++++++
>>   1 file changed, 7 insertions(+)
>
>> diff --git a/arch/arm/boot/dts/sun8i-a23.dtsi b/arch/arm/boot/dts/sun8i-a23.dtsi
>> index a31842d..c2ceafb 100644
>> --- a/arch/arm/boot/dts/sun8i-a23.dtsi
>> +++ b/arch/arm/boot/dts/sun8i-a23.dtsi
>> @@ -419,6 +419,13 @@
>>               interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
>>           };
>>
>> +        lradc: lradc at 01c22800 {
>> +            compatible = "allwinner,sun4i-a10-lradc-keys";
>
>     If this is a keyboard controller, its node name should probably be "keyboard", according to the ePAPR standard...

I'm not sure this qualifies as a keyboard controller, more over we
already have the same name in all other sun?i-a*.dtsi files, so if
we fix this it should be fixed by a follow up patch, and be fixed
everywhere.

Regards,

Hans

[PATCH 1/2] ARM: dts: sun8i: Add lradc node to sun8i-a23.dtsi

[Maxime Ripard]

On Tue, Jan 13, 2015 at 11:47:03AM +0100, Hans de Goede wrote:
> The A23 has the same lradc controller as previous Allwinner SoCs.
> 
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Applied the two patches, thanks!

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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