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| author | Werner Sembach <wse@tuxedocomputers.com> | 2022-07-07 20:09:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-11 12:48:41 +0200 |
| commit | 9370d1592f2a2b1a141b877ebc4ee67fbac18f7a (patch) | |
| tree | 9356bc432fb74a0f88f1f83f59e827b50711a58e /drivers/acpi/video_detect.c | |
| parent | 0d971fb6b43f72d565950fbb92c762965bbb56ce (diff) | |
| download | linux-stable-9370d1592f2a2b1a141b877ebc4ee67fbac18f7a.tar.gz linux-stable-9370d1592f2a2b1a141b877ebc4ee67fbac18f7a.tar.bz2 linux-stable-9370d1592f2a2b1a141b877ebc4ee67fbac18f7a.zip | |
ACPI: video: Force backlight native for some TongFang devices
commit c752089f7cf5b5800c6ace4cdd1a8351ee78a598 upstream.
The TongFang PF5PU1G, PF4NU1F, PF5NU1G, and PF5LUXG/TUXEDO BA15 Gen10,
Pulse 14/15 Gen1, and Pulse 15 Gen2 have the same problem as the Clevo
NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2:
They have a working native and video interface. However the default
detection mechanism first registers the video interface before
unregistering it again and switching to the native interface during boot.
This results in a dangling SBIOS request for backlight change for some
reason, causing the backlight to switch to ~2% once per boot on the first
power cord connect or disconnect event. Setting the native interface
explicitly circumvents this buggy behaviour by avoiding the unregistering
process.
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Cc: All applicable <stable@vger.kernel.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/acpi/video_detect.c')
| -rw-r--r-- | drivers/acpi/video_detect.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 298d9c65e084..b5cacd7c0dd0 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -431,7 +431,56 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), }, }, - + /* + * The TongFang PF5PU1G, PF4NU1F, PF5NU1G, and PF5LUXG/TUXEDO BA15 Gen10, + * Pulse 14/15 Gen1, and Pulse 15 Gen2 have the same problem as the Clevo + * NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2. See the description + * above. + */ + { + .callback = video_detect_force_native, + .ident = "TongFang PF5PU1G", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "PF5PU1G"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "TongFang PF4NU1F", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "PF4NU1F"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "TongFang PF4NU1F", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), + DMI_MATCH(DMI_BOARD_NAME, "PULSE1401"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "TongFang PF5NU1G", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "PF5NU1G"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "TongFang PF5NU1G", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), + DMI_MATCH(DMI_BOARD_NAME, "PULSE1501"), + }, + }, + { + .callback = video_detect_force_native, + .ident = "TongFang PF5LUXG", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "PF5LUXG"), + }, + }, /* * Desktops which falsely report a backlight and which our heuristics * for this do not catch. |