Add support for Imagis touchscreens, used on various mobile devices such as Samsung Galaxy J5 (2015), J3 (2015), J5 (2016). v2: rebase on top of the correct tree v3: - prefix all defines as IST3038C - use two tabs for all defines - add missing <linux/regulator/consumer.h> header - drop ADDR_LEN and DATA_LEN defines; use sizeof(reg_be) instead - use __be32 type for reg_be - add a comment about i2c read not being successful on first try - use "ret" instead of "res" in read_reg function - don't use the internal __cpu_to_be32 function, use cpu_to_be32 instead - use "error" instead of "ret" in interrupt handler - pass the slot state directly, without ternary operator - drop the dev_err in init_input_dev function - reorder the functions in _probe so that the chipid command is read as fast as possible - don't use imagis_start in probe - initialize the irq after the chip is powered - save the return value in imagis_resume - drop WIDTH_MAJOR since only TOUCH_MAJOR is reported - the "chip detected" message is now dev_dbg - reorder headers so they are in alphabetic order - use GENMASK to generate masks for getting the X and Y coordinates and touch area - drop *_pressure from device tree bindings since the driver doesn't support reporting pressure - fix the typo with i2c address in device treee bindings (48 instead of 50) - add IRQF_NO_AUTOEN flag to avoid unbalanced irq enable v4: - alphabetically order MAINTAINERS entry - alphabetically order Kconfig and Makefile - drop the error message in init_regulators - disable regulators on probe error - drop IRQF_TRIGGER_FALLING - @ is not optional (device tree bindings) - don't use items for compatible - add maxItems property to reg, drop the comment v5: - compatible enum is not an item of the list, drop "-" v6: - add _MS suffix to the delay define, drop the comment - change the reason for retry comment - add imagis_power_off and imagis_power_on functions to turn regulators on and off - use imagis_power_on/off in imagis_start and imagis_stop as well as in probe function - use error instead of ret in calls to functions which only return 0 or -errno - include linux/bits.h - proper indentation in Kconfig - drop the dev_dbg chip id message - MODULE_DEVICE_TABLE(of, ...); - no extra tabs in i2c_driver struct - save the return value in imagis_suspend v7: - initialize ret with 0 in _suspend and _resume (kernel test robot) - use a separate ret_be variable to avoid casting to __be32 (kernel test robot) v8: - use poweroff action - power_off returns void - ret -> error - combine dev declaration and assignment - use same style for error everywhere - return devm_regulator_bulk_get() directly v9: - don't return in power_off (forgot to commit) v10: - check for error before sleeping - duplicate msleep in imagis_start - return 0 since error can only be 0 in imagis_start - move poweroff action below imagis_power_off Markuss Broks (2): dt-bindings: input/touchscreen: bindings for Imagis Input: add Imagis touchscreen driver .../input/touchscreen/imagis,ist3038c.yaml | 74 ++++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + MAINTAINERS | 6 + drivers/input/touchscreen/Kconfig | 10 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/imagis.c | 348 ++++++++++++++++++ 6 files changed, 441 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml create mode 100644 drivers/input/touchscreen/imagis.c -- 2.20.1
