BMC/Intel-BMC/linux.git/drivers/input/touchscreen/ili210x.c, branch dev-5.8

Input: ili210x - add ili2120 support

2020-02-10T18:00:22+00:00

This adds support for the Ilitek ili2120 touchscreen found in the Fairphone 2 smartphone. Signed-off-by: Luca Weiss Link: https://lore.kernel.org/r/20200209151904.661210-1-luca@z3ntu.xyz Signed-off-by: Dmitry Torokhov

Input: ili210x - fix return value of is_visible function

2020-02-10T18:00:01+00:00

The is_visible function expects the permissions associated with an attribute of the sysfs group or 0 if an attribute is not visible. Change the code to return the attribute permissions when the attribute should be visible which resolves the warning: Attribute calibrate: Invalid permissions 01 Fixes: cc12ba1872c6 ("Input: ili210x - optionally show calibrate sysfs attribute") Signed-off-by: Luca Weiss Reviewed-by: Sven Van Asbroeck Link: https://lore.kernel.org/r/20200209145628.649409-1-luca@z3ntu.xyz Signed-off-by: Dmitry Torokhov

Input: ili210x - optionally show calibrate sysfs attribute

2019-11-12T23:53:33+00:00

Only show the 'calibrate' sysfs attribute on chip flavours which support calibration by writing to a calibration register. Do this by adding a flag to the chip operations structure. Signed-off-by: Sven Van Asbroeck Link: https://lore.kernel.org/r/20191112210148.3535-2-TheSven73@gmail.com Signed-off-by: Dmitry Torokhov

Input: ili210x - add resolution to chip operations structure

2019-11-12T23:53:32+00:00

Optionally allow the touch screen resolution to be set by adding it to the chip operations structure. If it is omitted (left zero), the resolution defaults to 64K. Which is the previously hard-coded value. Set the ili2117 resolution to 2048, as indicated in its datasheet. Signed-off-by: Sven Van Asbroeck Link: https://lore.kernel.org/r/20191112210148.3535-1-TheSven73@gmail.com Signed-off-by: Dmitry Torokhov

Input: ili210x - do not retrieve/print chip firmware version

2019-11-12T23:53:30+00:00

The driver's method to retrieve the firmware version on ili2117/ ili2118 chip flavours is incorrect. The firmware version register address and layout are wrong. The firmware version is not actually used anywhere inside or outside this driver. There is a dev_dbg() print, but that is only visible when the developer explicitly compiles in debug support. Don't make the code more complicated to preserve a feature that no-one is using. Remove all code associated with chip firmware version. Signed-off-by: Sven Van Asbroeck Link: https://lore.kernel.org/r/20191112164429.11225-1-TheSven73@gmail.com Signed-off-by: Dmitry Torokhov

Input: ili210x - remove unneeded suspend and resume handlers

2019-11-12T00:12:26+00:00

When I2C client is instantiated with I2C_CLIENT_WAKE flag (either via "wakeup-source" device property, or via board info flag), it will mark the main IRQ line as wakeup IRQ, which will ensure that it will be enabled for wakeup when system transitions to suspend state. Since our suspend/resume handlers were only managing IRQ wakeup state, they are no longer needed, and can be removed. Tested-by: Adam Ford #imx6q-logicpd Tested-by: Sven Van Asbroeck # ILI2118A variant Signed-off-by: Dmitry Torokhov

Input: ili210x - do not unconditionally mark touchscreen as wakeup source

2019-11-12T00:12:19+00:00

I2C devices that are supposed to be wakeup sources should be instantiated with I2C_CLIENT_WAKE flag (which can be either set by in board info, or retrieved from "wakeup-source" property); individual drivers should not be marking devices as wakeup sources unconditionally. Tested-by: Adam Ford #imx6q-logicpd Tested-by: Sven Van Asbroeck # ILI2118A variant Signed-off-by: Dmitry Torokhov

Input: ili210x - define and use chip operations structure

2019-11-12T00:12:13+00:00

Instead of doing if/else if/else on the chip's model number let's define chip operations structure and use it to perform indirect calls. With number of protocols supported by the driver growing, this makes it better maintainable. This change includes fixes to checks whether the driver should continue polling the controller by Sven Van Asbroeck . Tested-by: Adam Ford #imx6q-logicpd Tested-by: Sven Van Asbroeck # ILI2118A variant Signed-off-by: Dmitry Torokhov

Input: ili210x - do not set parent device explicitly

2019-11-12T00:12:01+00:00

We are using devm_input_allocate_device() that set's up the parent for us, no need to do it ourselves. Tested-by: Adam Ford #imx6q-logicpd Tested-by: Sven Van Asbroeck # ILI2118A variant Signed-off-by: Dmitry Torokhov

Input: ili210x - handle errors from input_mt_init_slots()

2019-11-12T00:11:53+00:00

input_mt_init_slots() may fail and we need to handle such failures. Tested-by: Adam Ford #imx6q-logicpd Tested-by: Sven Van Asbroeck # ILI2118A variant Signed-off-by: Dmitry Torokhov