[PATCH 1/2] ARM: tegra: add touchpad to Venice2 DT

[PATCH 1/2] ARM: tegra: add touchpad to Venice2 DT

[Stephen Warren]

From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

Venice2 contains an Atmel MXT touchpad. Add an I2C node for it to DT.
The Linux driver doesn't quite work on this platform yet, but adding
the DT node causes no issues, and will allow the device to work once
the driver is fixed.

Signed-off-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 arch/arm/boot/dts/tegra124-venice2.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/tegra124-venice2.dts b/arch/arm/boot/dts/tegra124-venice2.dts
index 70ad91d1a20b..dcbe5858faf1 100644
--- a/arch/arm/boot/dts/tegra124-venice2.dts
+++ b/arch/arm/boot/dts/tegra124-venice2.dts
@@ -606,6 +606,14 @@
 	i2c@0,7000c400 {
 		status = "okay";
 		clock-frequency = <100000>;
+
+		trackpad@4b {
+			compatible = "atmel,maxtouch";
+			reg = <0x4b>;
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>;
+			linux,gpio-keymap = <0 0 0 BTN_LEFT>;
+		};
 	};
 
 	i2c@0,7000c500 {
-- 
1.9.1

[PATCH 2/2] ARM: tegra: enable Atmel touchpad in defconfig

[Stephen Warren]

From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

This driver is used on Venice2 for the touchpad.

Signed-off-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 arch/arm/configs/tegra_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/tegra_defconfig b/arch/arm/configs/tegra_defconfig
index e5b5f3122fe6..62a0ee9973e3 100644
--- a/arch/arm/configs/tegra_defconfig
+++ b/arch/arm/configs/tegra_defconfig
@@ -121,6 +121,7 @@ CONFIG_KEYBOARD_TEGRA=y
 CONFIG_KEYBOARD_CROS_EC=y
 CONFIG_MOUSE_PS2_ELANTECH=y
 CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_TOUCHSCREEN_ATMEL_MXT=y
 CONFIG_TOUCHSCREEN_STMPE=y
 CONFIG_INPUT_MISC=y
 CONFIG_INPUT_MPU3050=y
-- 
1.9.1

Re: [PATCH 1/2] ARM: tegra: add touchpad to Venice2 DT

[Stephen Warren]

On 09/02/2014 09:57 AM, Stephen Warren wrote:
> From: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
>
> Venice2 contains an Atmel MXT touchpad. Add an I2C node for it to DT.
> The Linux driver doesn't quite work on this platform yet, but adding
> the DT node causes no issues, and will allow the device to work once
> the driver is fixed.

I've applied patch 1 to Tegra's for-3.18/dt and patch to to Tegra's 
for-3.18/defconfig branch.