linux-stable.git/include/acpi/video.h, branch linux-4.7.y

ACPI / Thermal / video: fix max_level incorrect value

2016-05-30T11:53:09+00:00

commit 059500940def (ACPI/video: export acpi_video_get_levels)
mistakenly dropped the correct value of max_level and that caused the
set_level function following failed and the acpi_video backlight interface
didn't get created. Fix this by passing back the correct max_level value.

While at it, also fix the param used in acpi_video_device_lcd_query_levels
where acpi_handle is expected but acpi_video_device is passed.

Fixes: 059500940def (ACPI/video: export acpi_video_get_levels)
Reported-and-tested-by: Valdis Kletnieks 
Signed-off-by: Aaron Lu 
Acked-by: Zhang Rui 
Signed-off-by: Rafael J. Wysocki

ACPI / video: mark acpi_video_get_levels() inline

2016-05-13T21:57:02+00:00

A recent patch added a stub function for acpi_video_get_levels when
CONFIG_ACPI_VIDEO is disabled. However, this is marked as 'static'
and causes a warning about an unused function whereever the header
gets included:

In file included from ../drivers/gpu/drm/radeon/radeon_acpi.c:28:0:
include/acpi/video.h:74:12: error: 'acpi_video_get_levels' defined but not used [-Werror=unused-function]

This makes the declaration 'static inline', which gets rid of the
warning.

Signed-off-by: Arnd Bergmann 
Fixes: 059500940def (ACPI/video: export acpi_video_get_levels)
Signed-off-by: Rafael J. Wysocki

ACPI/video: export acpi_video_get_levels

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

The acpi_video_get_levels is useful for other drivers, i.e. the
to-be-added int3406 thermal driver, so export it.

Signed-off-by: Aaron Lu 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Document acpi_video_handles_brightness_key_presses() a bit

2016-01-15T21:09:07+00:00

Document that acpi_video_handles_brightness_key_presses()'s return value
may change over time and should not be cached.

Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Add a acpi_video_handles_brightness_key_presses() helper

2016-01-01T02:14:51+00:00

Several drivers want to know if the acpi-video is generating key-presses
for brightness change hotkeys to avoid sending double key-events to
userspace for these. Currently these driver use this construct for this:

	if (acpi_video_get_backlight_type() == acpi_backlight_vendor)
		report_brightness_key_event();

This indirect way of detecting if acpi-video is active does not make the
code easier to understand, and in some cases it is wrong because just
because the preferred type != vendor does not mean that acpi-video is
actually listening for brightness events, e.g. there may be no acpi-video
bus on the system at all.

This commit adds a acpi_video_handles_brightness_key_presses() helper
function, making the code needing this functionality both easier to read
and more correct.

Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED()

2015-09-15T01:05:45+00:00

This commit removes all CONFIG_.*{,_MODULE} in ACPI code, replacing it
with IS_ENABLED().

Signed-off-by: Sudeep Holla 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Inline acpi_video_set_dmi_backlight_type

2015-06-24T17:59:28+00:00

... and kill this:

  In file included from drivers/gpu/drm/radeon/radeon_acpi.c:29:0:
  include/acpi/video.h:46:13: warning: ‘acpi_video_set_dmi_backlight_type’ defined but not used [-Wunused-function]
   static void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
               ^

Signed-off-by: Borislav Petkov 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Make acpi_video_unregister_backlight() private

2015-06-18T23:12:50+00:00

acpi_video_unregister_backlight() is now only used by video_detect.c
which is part of the same acpi_video module as video.c, make
acpi_video_unregister_backlight() private to this module.

Signed-off-by: Hans de Goede 
Acked-by: Darren Hart 
Signed-off-by: Rafael J. Wysocki

ACPI / video: Port to new backlight interface selection API

2015-06-18T23:10:59+00:00

Most of the patch is moving the dmi quirks for forcing use of the
acpi-video / the native backlight interface to video_detect.c.

What remains is a nice cleanup.

Signed-off-by: Hans de Goede 
Acked-by: Darren Hart 
Signed-off-by: Rafael J. Wysocki

acpi-video-detect: Rewrite backlight interface selection logic

2015-06-18T23:10:44+00:00

Currently we have 2 kernel commandline options + dmi-quirks in 3 places all
interacting (in interesting ways) to select which which backlight interface
to use. On the commandline we've acpi_backlight=[video|vendor] and
video.use_native_backlight=[0|1]. DMI quirks we have in
acpi/video-detect.c, acpi/video.c and drivers/platform/x86/*.c .

This commit is the first step to cleaning this up, replacing the 2 cmdline
options with just acpi_backlight=[video|vendor|native|none], and adds a
new API to video_detect.c to reflect this.

Follow up commits will also move other related code, like unregistering the
acpi_video backlight interface if it was registered before other drivers
which take priority over it are loaded, to video_detect.c where this
logic really belongs.

Signed-off-by: Hans de Goede 
Acked-by: Darren Hart 
Signed-off-by: Rafael J. Wysocki