kernel/linux.git/drivers/input/touchscreen/goodix.c, branch v5.19

Input: goodix - call acpi_device_fix_up_power() in some cases

2022-07-09T04:54:17+00:00

On ACPI boards, when we cannot get the GPIOs to do a reset ourselves if necessary, call acpi_device_fix_up_power() to force the ACPI _PS0 method to run. On some devices without proper GPIO descriptions this will reset the touchscreen for us and this may be necessary for us to be able to communicate to the touchscreen at all. Specifically on an Aya Neo Next this change will cause the _PS0() ACPI function to call INIT() which does: Method (INIT, 0, Serialized) { TP_I = 0x00A50000 TP_R = 0x00A50000 Sleep (0x0A) TP_I = 0x00E50000 Sleep (One) TP_R = 0x00E50000 Sleep (0x06) TP_I = 0x00A50000 Sleep (0x3C) TP_I = 0x00041800 } On older kernels the ACPI core assumed a power-on was necessary by itself and would run _PS0 before our probe function runs, which can be seen from the GPIO pin ctrl registers in /sys/kernel/debug/gpio which match the above hex values with older kernels. With newer kernels before this change the GPIO pin ctrl registers do not match, indicating INIT() has not run and probing the touchscreen fails. This change makes Linux run _PS0() again fixing the touchscreen not working on the Aya Neo Next. Reported-and-tested-by: Maya Matuszczyk Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20220618210233.208027-1-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov

Merge tag 'v5.17-rc8' into next

2022-03-15T02:14:29+00:00

Sync up with mainline to again get the latest changes in HID subsystem.

Input: goodix - fix race on driver unbind

2022-03-01T07:26:30+00:00

Because there is no way to detect if the touchscreen has pen support, the driver is allocating and registering the input_pen input_dev on receiving the first pen event. But this means that the input_dev gets allocated after the request_irq() call which means that the devm framework will free it before disabling the irq, leaving a window where the irq handler may run and reference the free-ed input_dev. To fix this move the allocation of the input_pen input_dev to before the request_irq() call, while still only registering it on the first pen event so that the driver does not advertise pen capability on touchscreens without it (most goodix touchscreens do not have pen support). Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20220131143539.109142-4-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov

Input: goodix - use input_copy_abs() helper

2022-03-01T07:26:28+00:00

Use the new input_copy_abs() helper and move the 2 input_abs_set_res() calls up to be directly after the 2 input_copy_abs() calls, so that the calls initializing the X and Y axis are all together. Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20220131143539.109142-3-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov

Input: goodix - workaround Cherry Trail devices with a bogus ACPI Interrupt() resource

2022-03-01T07:14:53+00:00

ACPI/x86 devices with a Cherry Trail SoC should have a GpioInt + a regular GPIO ACPI resource in their ACPI tables. Some CHT devices have a bug, where the also is bogus interrupt resource (likely copied from a previous Bay Trail based generation of the device). The i2c-core-acpi code will assign the bogus, non-working, interrupt resource to client->irq. Add a workaround to fix this up. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=2043960 Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20220228111613.363336-1-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov

Input: goodix - use the new soc_intel_is_byt() helper

2022-03-01T07:14:51+00:00

Use the new soc_intel_is_byt() helper from linux/platform_data/x86/soc.h. Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20220131143539.109142-5-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov

Merge tag 'v5.16' into next

2022-01-18T02:03:39+00:00

Sync up with mainline to bring in the latest API changes.

Merge branch 'next' into for-linus

2022-01-15T20:09:44+00:00

Prepare input updates for 5.17 merge window.

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2021-12-25T21:00:14+00:00

Pull input fixes from Dmitry Torokhov: "A few small updates to drivers. Of note we are now deferring probes of i8042 on some Asus devices as the controller is not ready to respond to queries first time around when the driver is compiled into the kernel" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: elants_i2c - do not check Remark ID on eKTH3900/eKTH5312 Input: atmel_mxt_ts - fix double free in mxt_read_info_block Input: goodix - fix memory leak in goodix_firmware_upload Input: goodix - add id->model mapping for the "9111" model Input: goodix - try not to touch the reset-pin on x86/ACPI devices Input: i8042 - enable deferred probe quirk for ASUS UM325UA Input: elantech - fix stack out of bound access in elantech_change_report_id() Input: iqs626a - prohibit inlining of channel parsing functions Input: i8042 - add deferred probe support

Input: goodix - 2 small fixes for pen support

2021-12-13T05:10:20+00:00

2 small fixes for pen support 1. Set the id.vendor field for the pen input_dev 2. Fix a typo in a comment Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20211212124242.81019-5-hdegoede@redhat.com Signed-off-by: Dmitry Torokhov