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Commit 555eb131 authored by Sarada Prasanna Garnayak's avatar Sarada Prasanna Garnayak
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input: touchscreen: add missing documentation for pinctrl 



Add missing documentation for pincrl in Atmel and Synaptics
touch controller driver. Add support for pinctrl framework
for GPIO configuration so that the touch controller driver
is compatible with targets that use and targets that don't
use pinctrl framework. Also configure the gpio and pinctrl
in driver suspend/resume method for the run time power
consumption.

Change-Id: I2e8ee89a4c3e2ec4a63279852f4a30cdbf5bb0dc
Signed-off-by: default avatarSarada Prasanna Garnayak <c_sgarna@codeaurora.org>
parent 3faf5fc4

Documentation/devicetree/bindings/input/touchscreen/atmel-mxt-ts.txt

+15 −0
Original line number Diff line number Diff line
@@ -18,6 +18,16 @@ Required properties: 
 - atmel,variant-id	: variant identification of the controller

 - atmel,version	: firmware version of the controller

 - atmel,build		: firmware build number of the controller

 - pinctrl-names	: This should be defined if a target uses pinctrl framework.

			See "pinctrl" in Documentation/devicetree/bindings/pinctrl/msm-pinctrl.txt.

			It should specify the names of the configs that pinctrl can install in driver.

			Following are the pinctrl configs that can be installed:

			"pmx_ts_active" : Active configuration of pins, this should specify active

			config defined in pin groups of interrupt and reset gpio.

			"pmx_ts_suspend" : Disabled configuration of pins, this should specify sleep

			config defined in pin groups of interrupt and reset gpio.

			"pmx_ts_release" : Release configuration of pins, this should specify

			release config defined in pin groups of interrupt and reset gpio.



Required for firmware update only:

 - atmel,fw-name		: firmware name to use for flashing firmware
@@ -63,6 +73,11 @@ Example: 
			vcc_i2c-supply = <&pm8941_lvs1>;

			atmel,panel-coords = <0 0 479 799>;

			atmel,display-coords = <0 0 479 799>;

			/* pins used by touchscreen */

			pinctrl-names = "pmx_ts_active","pmx_ts_suspend", "pmx_ts_release";

			pinctrl-0 = <&ts_int_active &ts_reset_active>;

			pinctrl-1 = <&ts_int_suspend &ts_reset_suspend>;

			pinctrl-2 = <&ts_release>;

			atmel,i2c-pull-up;

			atmel,no-force-update;

			atmel,dig-reg-support;

Documentation/devicetree/bindings/input/touchscreen/synaptics_dsx_i2c.txt

+1 −1
Original line number Diff line number Diff line
@@ -81,7 +81,7 @@ Example: 
			synaptics,y-flip;

			synaptics,disable-gpios;

			synaptics,fw-name = "PR1610974.img";

			pinctrl-names = "pmx_ts_active","pmx_ts_suspend", "pmx_ts_suspend";

			pinctrl-names = "pmx_ts_active","pmx_ts_suspend", "pmx_ts_release";

			pinctrl-0 = <&ts_int_active &ts_reset_active>;

			pinctrl-1 = <&ts_int_suspend &ts_reset_suspend>;

			pinctrl-2 = <&ts_release>;