[PATCH v6] input: touchscreen: Add generic driver for Silead touchscreens

[Hans de Goede]

Hi,

On 27-07-16 23:35, Dmitry Torokhov wrote:
> On Tue, Jul 19, 2016 at 11:44:25AM -0700, Dmitry Torokhov wrote:
>> On Sat, Jul 16, 2016 at 12:56:05PM -0500, Rob Herring wrote:
>>> On Mon, Jul 11, 2016 at 05:51:44PM +0200, Hans de Goede wrote:
>>>> From: Robert Dolca <robert.dolca at intel.com>
>>>>
>>>> This driver adds support for Silead touchscreens. It has been tested
>>>> with GSL1680 and GSL3680 touch panels.
>>>>
>>>> It supports ACPI and device tree enumeration. Screen resolution,
>>>> the maximum number of fingers supported and firmware name are
>>>> configurable.
>>>>
>>>> Signed-off-by: Robert Dolca <robert.dolca at intel.com>
>>>> Signed-off-by: Daniel Jansen <djaniboe at gmail.com>
>>>> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
>>>> ---
>>>> Changes in v6:
>>>> -Default to 5 fingers if max-fingers is not specified
>>>> -Improve devicetree binding doc: improve wake-gpios description, use
>>>>  "See touchscreen.txt" where applicable
>>>> ---
>>>>  .../bindings/input/touchscreen/silead_gsl1680.txt  |  36 ++
>>>>  drivers/input/touchscreen/Kconfig                  |  13 +
>>>>  drivers/input/touchscreen/Makefile                 |   1 +
>>>>  drivers/input/touchscreen/silead.c                 | 652 +++++++++++++++++++++
>>>>  4 files changed, 702 insertions(+)
>>>>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt
>>>>  create mode 100644 drivers/input/touchscreen/silead.c
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt
>>>> new file mode 100644
>>>> index 0000000..1e58d37
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt
>>>> @@ -0,0 +1,36 @@
>>>> +* GSL 1680 touchscreen controller
>>>> +
>>>> +Required properties:
>>>> +- compatible		  : "silead,gsl1680"
>>>> +- reg			  : I2C slave address of the chip (0x40)
>>>> +- interrupt-parent	  : a phandle pointing to the interrupt controller
>>>> +			    serving the interrupt for this chip
>>>> +- interrupts		  : interrupt specification for the gsl1680 interrupt
>>>> +- power-gpios		  : Specification for the pin connected to the gsl1680's
>>>> +			    shutdown input. This needs to be driven high to take the
>>>> +			    gsl1680 out of its low power state
>>>> +- touchscreen-size-x	  : See touchscreen.txt
>>>> +- touchscreen-size-y	  : See touchscreen.txt
>>>> +- touchscreen-max-fingers : maximum number of fingers the touchscreen can detect
>>>
>>> If you name it like a standard property, then it should be documented in
>>> touchscreen.txt.
>>
>> Actually this is very much Silead-specific wart, I'd rather we called it
>> "max-fingers" or "silead,max-fingers" to illustrate that it is not at
>> all a generic property.
>>
>> Rob, will you be OK with it?
>
> Rob, ping? I'd like to get it into the tree and this is only outstanding
> question.

I think that your suggestion to make this "silead,max-fingers" is a good idea,
I will do a v8 with this soon (or feel free to fixup v7 yourself).

Regards,

Hans