kernel/drivers/input/keyboard/applespi.c, branch linux-6.9.y

Input: applespi - use pm_sleep_ptr() and SYSTEM_SLEEP_PM_OPS()

2023-01-27T22:49:53Z

SET_SYSTEM_SLEEP_PM_OPS() is deprecated as it requires explicit protection against unused function warnings. The new combination of pm_sleep_ptr() and SYSTEM_SLEEP_PM_OPS() allows the compiler to see the functions, thus suppressing the warning, but still allowing the unused code to be removed. Thus also drop the __maybe_unused markings. In this case we also have a .poweroff_late() callback. Whilst not strictly necessary, to future proof against relaxation of the protection of the main driver.pm = pm_sleep_ptr() protect this pointer with pm_sleep_ptr() as would be done if the LATE_SYSTEM_SLEEP_PM_OPS() macro were used to set it. Signed-off-by: Jonathan Cameron Link: https://lore.kernel.org/r/20230114171620.42891-13-jic23@kernel.org Signed-off-by: Dmitry Torokhov

Input: applespi - replace zero-length array with DECLARE_FLEX_ARRAY() helper

2022-09-27T05:02:32Z

Zero-length arrays are deprecated and we are moving towards adopting C99 flexible-array members, instead. So, replace zero-length arrays declarations in anonymous union with the new DECLARE_FLEX_ARRAY() helper macro. This helper allows for flexible-array members in unions. Link: https://github.com/KSPP/linux/issues/193 Link: https://github.com/KSPP/linux/issues/219 Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/YzIeJeqU73G+UI8g@work Signed-off-by: Dmitry Torokhov

Merge branch 'i2c/make_remove_callback_void-immutable' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into next

2022-08-17T19:30:00Z

Sync up with the latest I2C code base to get updated prototype of I2C bus remove() method.

Input: applespi - use correct struct names in comment

2022-08-11T23:14:32Z

The incorrect structure name is being used in the comment for struct touchpad_info_protocol. Correct it. Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20220805174754.2374473-1-colin.i.king@gmail.com Signed-off-by: Dmitry Torokhov

Input: applespi - avoid efivars API and invoke EFI services directly

2022-06-24T08:21:20Z

This driver abuses the efivar API, by using a few of its helpers on entries that were not instantiated by the API itself. This is a problem as future cleanup work on efivars is complicated by this. So let's just switch to the get/set variable runtime wrappers directly. Cc: Dmitry Torokhov Signed-off-by: Ard Biesheuvel

spi: make remove callback a void function

2022-02-09T13:00:45Z

The value returned by an spi driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Signed-off-by: Uwe Kleine-König Acked-by: Marc Kleine-Budde Acked-by: Andy Shevchenko Reviewed-by: Geert Uytterhoeven Acked-by: Jérôme Pouiller Acked-by: Miquel Raynal Acked-by: Jonathan Cameron Acked-by: Claudius Heine Acked-by: Stefan Schmidt Acked-by: Alexandre Belloni Acked-by: Ulf Hansson # For MMC Acked-by: Marcus Folkesson Acked-by: Łukasz Stelmach Acked-by: Lee Jones Link: https://lore.kernel.org/r/20220123175201.34839-6-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown

Input: applespi - fix occasional crc errors under load.

2021-02-19T19:13:29Z

For some reason, when the system is under heavy CPU load, the read following the write sometimes occurs unusually quickly, resulting in the read data not being quite ready and hence a bad packet getting read. Adding another delay after reading the status message appears to fix this. Signed-off-by: Ronald Tschalär Link: https://lore.kernel.org/r/20210217190718.11035-2-ronald@innovation.ch Signed-off-by: Dmitry Torokhov

Input: applespi - don't wait for responses to commands indefinitely.

2021-02-19T19:13:27Z

The response to a command may never arrive or it may be corrupted (and hence dropped) for some reason. While exceedingly rare, when it did happen it blocked all further commands. One way to fix this was to do a suspend/resume. However, recovering automatically seems like a nicer option. Hence this puts a time limit (1 sec) on how long we're willing to wait for a response, after which we assume it got lost. Signed-off-by: Ronald Tschalär Link: https://lore.kernel.org/r/20210217190718.11035-1-ronald@innovation.ch Signed-off-by: Dmitry Torokhov

Input: applespi - use new structure for SPI transfer delays

2020-12-11T07:39:16Z

In a recent change to the SPI subsystem [1], a new `delay` struct was added to replace the `delay_usecs`. This change replaces the current `delay_usecs` with `delay` for this driver. The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure that both `delay_usecs` & `delay` are used (in this order to preserve backwards compatibility). [1] commit bebcfd272df6 ("spi: introduce `delay` field for `spi_transfer` + spi_transfer_delay_exec()") Signed-off-by: Sergiu Cuciurean Tested-by: Ronald Tschalär Reviewed-by: Ronald Tschalär Link: https://lore.kernel.org/r/20200227124534.23399-1-sergiu.cuciurean@analog.com Signed-off-by: Dmitry Torokhov

Input: applespi - provide missing struct 'message' descriptions

2020-11-20T03:56:41Z

Fixes the following W=1 kernel build warning(s): drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'keyboard' not described in 'message' drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'touchpad' not described in 'message' drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'tp_info' not described in 'message' drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'tp_info_command' not described in 'message' drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'init_mt_command' not described in 'message' drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'capsl_command' not described in 'message' drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'bl_command' not described in 'message' drivers/input/keyboard/applespi.c:306: warning: Function parameter or member 'data' not described in 'message' Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20201112110204.2083435-15-lee.jones@linaro.org Signed-off-by: Dmitry Torokhov