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linux/drivers/pinctrl/intel
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Mika Westerberg 7036502783 pinctrl: cherryview: Add a quirk to make Acer Chromebook keyboard work again 
After commit 47c950d102 ("pinctrl: cherryview: Do not add all
southwest and north GPIOs to IRQ domain") the driver does not add all
GPIOs to the irqdomain. The reason for that is that those GPIOs cannot
generate IRQs at all, only GPEs (General Purpose Events). This causes
Linux virtual IRQ numbering to change.

However, it seems some CYAN Chromebooks, including Acer Chromebook
hardcodes these Linux IRQ numbers in the ACPI tables of the machine.
Since the numbering is different now, the IRQ meant for keyboard does
not match the Linux virtual IRQ number anymore making the keyboard
non-functional.

Work this around by adding special quirk just for these machines where
we add back all GPIOs to the irqdomain. Rest of the Cherryview/Braswell
based machines will not be affected by the change.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=194945
Fixes: 47c950d102 ("pinctrl: cherryview: Do not add all southwest and north GPIOs to IRQ domain")
Reported-by: Adam S Levy <theadamlevy@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
History 2017-04-11 10:09:39 +02:00
..
Kconfig pinctrl: intel: Add Intel Gemini Lake pin controller support 2017-01-30 15:06:01 +01:00
Makefile pinctrl: intel: Add Intel Gemini Lake pin controller support 2017-01-30 15:06:01 +01:00
pinctrl-baytrail.c Pin control bulk changes for the v4.11 kernel cycle: 2017-02-21 16:34:22 -08:00
pinctrl-broxton.c pinctrl: broxton: No need to take pointer of a pointer 2017-01-30 14:45:12 +01:00
pinctrl-cherryview.c pinctrl: cherryview: Add a quirk to make Acer Chromebook keyboard work again 2017-04-11 10:09:39 +02:00
pinctrl-geminilake.c pinctrl: intel: Add Intel Gemini Lake pin controller support 2017-01-30 15:06:01 +01:00
pinctrl-intel.c pinctrl: intel: unlock on error in intel_config_set_pull() 2017-02-13 15:42:26 +01:00
pinctrl-intel.h pinctrl: intel: Add support for 1k additional pull-down 2017-01-30 15:04:23 +01:00
pinctrl-merrifield.c pinctrl: intel: merrifield: Add missed check in mrfld_config_set() 2017-01-30 09:15:10 +01:00
pinctrl-sunrisepoint.c pinctrl: intel: Convert to use devm_gpiochip_add_data() 2017-01-11 13:52:37 +01:00