On Wed, Jul 05, 2017 at 03:19:48PM +0900, Anthony Kim wrote:
> The HiDeep touchscreen device is a capacitive multi-touch controller
> mainly for multi-touch supported devices use. It use I2C interface for
> communication to IC and provide axis X, Y, Z locations for ten finger
> touch through input event interface to userspace.
>
> It support the Crimson and the Lime two type IC. They are different
> the number of channel supported and FW size. But the working protocol
> is same.
>
> Signed-off-by: Anthony Kim <anthony.kim@xxxxxxxxxx>
> ---
> .../bindings/input/touchscreen/hideep.txt | 40 +
> .../devicetree/bindings/vendor-prefixes.txt | 1 +
> drivers/input/touchscreen/Kconfig | 32 +
> drivers/input/touchscreen/Makefile | 2 +
> drivers/input/touchscreen/hideep.h | 338 +++++++
> drivers/input/touchscreen/hideep_core.c | 1029 ++++++++++++++++++++
> drivers/input/touchscreen/hideep_dbg.c | 405 ++++++++
> drivers/input/touchscreen/hideep_dbg.h | 24 +
> drivers/input/touchscreen/hideep_isp.c | 584 +++++++++++
> drivers/input/touchscreen/hideep_isp.h | 96 ++
> drivers/input/touchscreen/hideep_sysfs.c | 249 +++++
> 11 files changed, 2800 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/input/touchscreen/hideep.txt
> create mode 100644 drivers/input/touchscreen/hideep.h
> create mode 100644 drivers/input/touchscreen/hideep_core.c
> create mode 100644 drivers/input/touchscreen/hideep_dbg.c
> create mode 100644 drivers/input/touchscreen/hideep_dbg.h
> create mode 100644 drivers/input/touchscreen/hideep_isp.c
> create mode 100644 drivers/input/touchscreen/hideep_isp.h
> create mode 100644 drivers/input/touchscreen/hideep_sysfs.c
>
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/hideep.txt b/Documentation/devicetree/bindings/input/touchscreen/hideep.txt
> new file mode 100644
> index 0000000..f5ab5e6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/hideep.txt
> @@ -0,0 +1,40 @@
> +* HiDeep Finger and Stylus touchscreen controller
> +
> +Required properties:
> +- compatible : must be "hideep,hideep_ts".
s/_/-/
Is there only 1 version or another way to determine the exact chip and
firmware? If not, then you need a more specific compatible.
> +- reg : I2C slave address, (e.g. 0x6C).
> +- hideep,max_coords : Max value for axis X, Y, W, Z.
> +
> +Optional properties:
> +- pinctrl-names : "reset_down", "reset-up", "intb-ctrl".
> + They are gpio pinctrl names for should be search in driver code.
> +- pinctrl-0 : Gpio control for "reset-down".
> +- pinctrl-1 : Gpio control for "reset-up".
> +- pinctrl-2 : Gpio control for "intb-ctrl".
> +- hideep,regulator_vdd : Main voltage(3.3V) name.
> +- hideep,regulator_vid : IO voltage(1.8V) name.
Use standard regulator binding.
> +- hideep,irq_gpio : Define for interrupt gpio pin.
> + It is to use for set interrupt type.
Use interrupt binding.
> +- hideep,reset_gpio : Define for reset gpio pin.
> + It is to use for reset IC.
reset-gpios is the standard name.
> +
> +Example:
> +
> +i2c@00000000 {
> +
> + /* ... */
> +
> + hideep@6c {
touchscreen@6c
> + compatible = "hideep,hideep_ts";
> + reg = <0x6c>;
> + pinctrl-names = "reset-down", "reset-up", "intb-ctrl";
> + pinctrl-0 = <&reset_gpio0>;
> + pinctrl-1 = <&reset_gpio1>;
> + pinctrl-2 = <&touch_int>;
> + hideep,regulator_vdd = "vdd_ldo33"; // need modify
> + hideep,regulator_vid = "vdd_ldo18"; // need modify
> + hideep,irq_gpio = <&gpx0 5 0x0>; // <gpio-name gpio-num gpio-val> need modify
> + hideep,reset_gpio = <&gpa0 5 0x1>; // <gpio-name gpio-num gpio-val> need modify
> + hideep,max_coords = <1080 1920 65535 65535>; // x y w z, need modify
Not documented. Probably should be standard touchscreen properties.
> + };
> +};
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