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| author | Hui Wang <jason77.wang@gmail.com> | 2012-10-25 11:38:01 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-10-25 11:38:22 +0400 |
| commit | ae495e844a77344fdaedbb2ad97d925d096e9f0d (patch) | |
| tree | b30e1cd487225c3d3316d7b6853b0796e6ad43c3 /Documentation | |
| parent | 0cc8d6a9d23d6662da91eeb6bb8e7d1c559850f0 (diff) | |
| download | linux-ae495e844a77344fdaedbb2ad97d925d096e9f0d.tar.xz | |
Input: egalax_ts - get gpio from devicetree
The irq_to_gpio() is old, most platforms use GENERIC_GPIO framework
and don't support this API anymore.
The i.MX6q sabrelite platform equips an egalax touchscreen controller,
and this platform already transfered to GENERIC_GPIO framework, to
support this driver, we use a more generic way to get gpio.
Add a return value checking for waking up the controller in the probe
function, this guarantee only a workable device can pass init.
[dmitry.torokhov@gmail.com: Make driver depend on CONFIG_OF as it is
now required.]
Acked-by Zhang Jiejing <jiejing.zhang@freescale.com>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/egalax-ts.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/egalax-ts.txt b/Documentation/devicetree/bindings/input/touchscreen/egalax-ts.txt new file mode 100644 index 000000000000..df70318a617f --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/egalax-ts.txt @@ -0,0 +1,19 @@ +* EETI eGalax Multiple Touch Controller + +Required properties: +- compatible: must be "eeti,egalax_ts" +- reg: i2c slave address +- interrupt-parent: the phandle for the interrupt controller +- interrupts: touch controller interrupt +- wakeup-gpios: the gpio pin to be used for waking up the controller + as well as uased as irq pin + +Example: + + egalax_ts@04 { + compatible = "eeti,egalax_ts"; + reg = <0x04>; + interrupt-parent = <&gpio1>; + interrupts = <9 2>; + wakeup-gpios = <&gpio1 9 0>; + }; |