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| author | Hans de Goede <hdegoede@redhat.com> | 2023-10-21 12:48:41 +0300 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-10-25 12:29:13 +0300 |
| commit | 858bd78c9d324781217bb42a87766ca9194809ca (patch) | |
| tree | 2a6e846853b78940fed507851d665599676c6681 /drivers/platform | |
| parent | 942a4a61b64e182d756a1a5776aa500d3b3d862f (diff) | |
| download | linux-858bd78c9d324781217bb42a87766ca9194809ca.tar.xz | |
platform/x86: asus-wmi: Do not report brightness up/down keys when also reported by acpi_video
For a long time now the acpi_video driver reports evdev brightness up/down
key events for the brightness hotkeys on most (non ancient) laptops.
asus-wmi also reports evdev brightness up/down key events for these
keys leading to each press being reported twice and e.g. GNOME increasing
the brightness by 2 steps instead of 1 step.
Use the acpi_video_handles_brightness_key_presses() helper to detect if
acpi_video is reporting brightness key-presses and if it is then don't
report the same events also from the asus-wmi driver.
Note there is a chance that this may lead to regressions where
the brightness hotkeys stop working because they are not actually
reported by the acpi_video driver. Unfortunately the only way to
find out if this is a problem is to try.
To at least avoid regressions on old hw using the eeepc-wmi driver,
implement this as a key filter in asus-nb-wmi so that the eeepc-wmi
driver is not affected.
Reported-by: James John <me@donjajo.com>
Closes: https://lore.kernel.org/platform-driver-x86/a2c441fe-457e-44cf-a146-0ecd86b037cf@donjajo.com/
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20231021094841.7419-1-hdegoede@redhat.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/asus-nb-wmi.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c index d85d895fee89..67e4111716ca 100644 --- a/drivers/platform/x86/asus-nb-wmi.c +++ b/drivers/platform/x86/asus-nb-wmi.c @@ -16,6 +16,8 @@ #include <linux/dmi.h> #include <linux/i8042.h> +#include <acpi/video.h> + #include "asus-wmi.h" #define ASUS_NB_WMI_FILE "asus-nb-wmi" @@ -603,6 +605,19 @@ static const struct key_entry asus_nb_wmi_keymap[] = { { KE_END, 0}, }; +static void asus_nb_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code, + unsigned int *value, bool *autorelease) +{ + switch (*code) { + case ASUS_WMI_BRN_DOWN: + case ASUS_WMI_BRN_UP: + if (acpi_video_handles_brightness_key_presses()) + *code = ASUS_WMI_KEY_IGNORE; + + break; + } +} + static struct asus_wmi_driver asus_nb_wmi_driver = { .name = ASUS_NB_WMI_FILE, .owner = THIS_MODULE, @@ -611,6 +626,7 @@ static struct asus_wmi_driver asus_nb_wmi_driver = { .input_name = "Asus WMI hotkeys", .input_phys = ASUS_NB_WMI_FILE "/input0", .detect_quirks = asus_nb_wmi_quirks, + .key_filter = asus_nb_wmi_key_filter, }; |