基于“xxx” Androidx平台的驱动及系统开发 之 触摸板篇 《移植gt9xx触摸驱动》

Goodix GT9xx series touch controller Required properties: - compatible : Should be "goodix,gt9xx", compatible with the of_match_table defined in driver. - reg : I2C slave address of the device. - interrupt-parent : Parent of interrupt. - interrupts : Configuration of touch panel interrupt controller. - irq-gpio : Interrupt gpio which is to provide interrupts to host, same as "interrupts" node. - rst-gpio : Reset gpio to control the reset of chip. - irq-flags = <2>; : 1 for rising edge trigger, 2 for failing edge trigger Optional properties: - vdd_ana-supply : Power supply needed to power up the device, when use external regulator, do not add this property. - vcc_i2c-supply : Power source required to power up i2c bus. GT9xx series can provide 1.8V from internal LDO, add this properties base on hardware design. - pinctrl-names : Pinctrl related properties, generally this is used for enable irq-gpio output function. - touchscreen-max-id : generally no need to change this value keep the default is OK, if you want support active pen this value must no less then 11. - touchscreen-key-map : Specify the touch panel key code if you want support touch buttons on the device surface. - goodix,int-sync : Set this with 1 if you use non-fixed I2C address. - goodix,esd-protect : Start ESD check function when driver installed. - goodix,auto-update-cfg : Update config before firmware update. - goodix,power-off-sleep : Power off when enter sleep mode. - goodix,pen-suppress-finger : Set to 1 if you want suppress finger touch point when there have a pen detected. - goodix,cfg-groupX : Touch screen controller config data group X, where X represent sensor ID. Driver supports maximum six config groups. driver will select config group depending on sensor id. Example: gt9xx@5d { compatible = "goodix,gt9xx"; reg = <0x5d>; status = "okay"; interrupt-parent = <&msm_gpio>; interrupts = <13 0x2800>; pinctrl-names = "default", "int-output-low","int-output-high", "int-input"; pinctrl-0 = <&ts_int_default>; pinctrl-1 = <&ts_int_output_low>; pinctrl-2 = <&ts_int_output_high>; pinctrl-3 = <&ts_int_input>; reset-gpios = <&msm_gpio 12 0x0>; irq-gpios = <&msm_gpio 13 0x2800>; irq-flags = <2>; touchscreen-max-id = <11>; touchscreen-size-x = <1080>; touchscreen-size-y = <1920>; touchscreen-max-w = <512>; touchscreen-max-p = <512>; touchscreen-key-map = <172>, <158>; /*KEY_HOMEPAGE=172, KEY_BACK=158，KEY_MENU=139*/ goodix,slide-wakeup = <0>; goodix,type-a-report = <0>; goodix,driver-send-cfg = <0>; goodix,resume-in-workqueue = <0>; goodix,int-sync = <1>; goodix,swap-x2y = <0>; goodix,esd-protect = <1>; goodix,auto-update-cfg = <0>; goodix,power-off-sleep = <0>; goodix,pen-suppress-finger = <0>; goodix,cfg-group0 = [ 53 D0 02 00 05 05 F5 D5 21 48 2D 0F 5A 41 0E 05 00 00 32 32 20 00 05 14 14 1A 14 8B 2B 00 ]; };