linux-toradex.git/drivers/acpi/video_detect.c, branch v4.19-rc3

ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E

2018-03-20T09:38:17+00:00

Just like many other Samsung models, the 670Z5E needs to use the acpi-video
backlight interface rather then the native one for backlight control to
work, add a quirk for this.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1557060
Cc: All applicable 
Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Add force_none quirk for Dell OptiPlex 9020M

2017-07-16T00:27:23+00:00

Dell OptiPlex 9020M is a micro PC desktop that has no built-in
LCD panel and its acpi_video does not work.

Signed-off-by: Alex Hung 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Add quirks for the Dell Precision 7510

2017-06-28T21:41:03+00:00

The Dell Precision 7510 has a broken acpi-video implementation.

The backlight control bits work, but when the brightness is changed via
the acpi-video interface the backlight flickers annoyingly before settling
at the new brightness, switching to using the native interface fixes the
flickering so add a quirk for this (the vendor interface can not change the
brightness at all).

Signed-off-by: Shih-Yuan Lee (FourDollars) 
Signed-off-by: Rafael J. Wysocki

Revert "ACPI / video: Add force_native quirk for HP Pavilion dv6"

2017-01-25T13:04:13+00:00

Revert commit 6276e53fa8c0 (ACPI / video: Add force_native quirk for
HP Pavilion dv6).

In the commit message for the quirk this revert removes I wrote:

"Note that there are quite a few HP Pavilion dv6 variants, some
woth ATI and some with NVIDIA hybrid gfx, both seem to need this
quirk to have working backlight control. There are also some versions
with only Intel integrated gfx, these may not need this quirk, but it
should not hurt there."

Unfortunately that seems wrong, I've already received 2 reports of
this commit causing regressions on some dv6 variants (at least one
of which actually has a nvidia GPU). So it seems that HP has made a
mess here by using the same model-name both in marketing and in the
DMI data for many different variants. Some of which need
acpi_backlight=native for functional backlight control (as the
quirk this commit reverts was doing), where as others are broken by
it. So lets get back to the old sitation so as to avoid regressing
on models which used to work without any kernel cmdline arguments
before.

Fixes: 6276e53fa8c0 (ACPI / video: Add force_native quirk for HP Pavilion dv6)
Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Add force_native quirk for HP Pavilion dv6

2016-11-29T22:27:17+00:00

The HP Pavilion dv6 has a non-working acpi_video0 backlight interface
and an intel_backlight interface which works fine. Add a force_native
quirk for it so that the non-working acpi_video0 interface does not get
registered.

Note that there are quite a few HP Pavilion dv6 variants, some
woth ATI and some with NVIDIA hybrid gfx, both seem to need this
quirk to have working backlight control. There are also some versions
with only Intel integrated gfx, these may not need this quirk, but it
should not hurt there.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1204476
Link: https://bugs.launchpad.net/ubuntu/+source/linux-lts-trusty/+bug/1416940
Cc: All applicable 
Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Add force_native quirk for Dell XPS 17 L702X

2016-11-29T22:27:16+00:00

The Dell XPS 17 L702X has a non-working acpi_video0 backlight interface
and an intel_backlight interface which works fine. Add a force_native
quirk for it so that the non-working acpi_video0 interface does not get
registered.

Note that there also is an issue with the brightnesskeys on this laptop,
they do not generate key-press events in anyway. That is not solved by
this patch.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1123661
Cc: All applicable 
Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Thinkpad X201 Tablet needs video_detect_force_video

2016-06-21T23:59:03+00:00

Add Thinkpad X201 Tablet to the video_detect_force_video blacklist.

Signed-off-by: Ralf Gerbig 
[ rjw : Changelog ]
Signed-off-by: Rafael J. Wysocki

video / backlight: remove the backlight_device_registered API

2016-05-04T21:41:14+00:00

Since we will need the backlight_device_get_by_type API, we can use it
instead of the backlight_device_registered API whenever necessary so
remove the backlight_device_registered API.

Signed-off-by: Aaron Lu 
Acked-by: Jingoo Han 
Signed-off-by: Rafael J. Wysocki

ACPI: Revert "ACPI / video: Add Dell Inspiron 5737 to the blacklist"

2016-01-23T02:04:59+00:00

The quirk to get "acpi_backlight=vendor" behavior by default on the
Dell Inspiron 5737 was added before we started doing
"acpi_backlight=native" by default on Win8 ready machines.

Since we now avoid using acpi-video as backlight driver on these machines
by default (using the native driver instead) we no longer need this quirk.

Moreover the vendor driver does not work after a suspend/resume where
as the native driver does.

This reverts commit 08a56226d847 (ACPI / video: Add Dell Inspiron 5737
to the blacklist).

Link: https://bugzilla.kernel.org/show_bug.cgi?id=111061
Cc: 3.19+  # 3.19+
Reported-and-tested-by: erusan@gmail.com
Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Add a quirk to force acpi-video backlight on SAMSUNG 530U4E/540U4E

2016-01-01T02:14:57+00:00

The native interface on SAMSUNG 530U4E/540U4E doesn't work even though
the firmware claims Win8 compatible while the acpi_video interface
works, add a quirk for this.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=108971
Reported-and-tested-by: adam bk 
Signed-off-by: Aaron Lu 
Signed-off-by: Rafael J. Wysocki