Hans de Goede 4690555e13 samsung-laptop: Add use_native_backlight quirk, and enable it on some models ... Since kernel 3.14 the backlight control has been broken on various Samsung Atom based netbooks. This has been bisected and this problem happens since commit b35684b8fa ("drm/i915: do full backlight setup at enable time") This has been reported and discussed in detail here: http://lists.freedesktop.org/archives/intel-gfx/2014-July/049395.html Unfortunately no-one has been able to fix this. This only affects Samsung Atom netbooks, and the Linux kernel and the BIOS of those laptops have never worked well together. All affected laptops already have a quirk to avoid using the standard acpi-video interface and instead use the samsung specific SABI interface which samsung-laptop uses. It seems that recent fixes to the i915 driver have also broken backlight control through the SABI interface. The intel_backlight driver OTOH works fine, and also allows for finer grained backlight control. So add a new use_native_backlight quirk, and replace the broken_acpi_video quirk with this quirk for affected models. This new quirk disables acpi-video as before and also stops samsung-laptop from registering the SABI based samsung_laptop backlight interface, leaving only the working intel_backlight interface. This commit enables this new quirk for 3 models which are known to be affected, chances are that it needs to be used on other models too. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1094948 # N145P BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1115713 # N250P Reported-by: Bertrik Sikken <bertrik@sikken.nl> # N150P Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>		2015-01-23 09:09:04 -08:00
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chrome	platform: chrome: drop owner assignment from platform_drivers	2014-10-20 16:21:26 +02:00
goldfish	goldfish: pipe: fix warnings for 32bit builds	2014-05-16 11:32:51 -07:00
olpc	drivers/platform/olpc/olpc-ec.c: initialise earlier	2013-08-23 09:51:22 -07:00
x86	samsung-laptop: Add use_native_backlight quirk, and enable it on some models	2015-01-23 09:09:04 -08:00
Kconfig	platform: add chrome platform directory	2013-11-20 18:51:03 -05:00
Makefile	platform: add chrome platform directory	2013-11-20 18:51:03 -05:00