[PATCH 3.12 122/146] drm/i915: quirk invert brightness for Acer Aspire 5336

[Jiri Slaby]

From: Jani Nikula <jani.nikula@xxxxxxxxx>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

This is commit 0f540c3a7cfb91c9d7a19eb0c95c24 upstream.

Since
commit ee1452d7458451a7508e0663553ce88d63958157
Author: Jani Nikula <jani.nikula@xxxxxxxxx>
Date:   Fri Sep 20 15:05:30 2013 +0300

    drm/i915: assume all GM45 Acer laptops use inverted backlight PWM

failed and was later reverted in
commit be505f643925e257087247b996cd8ece787c12af
Author: Alexander van Heukelum <heukelum@xxxxxxxxxxx>
Date:   Sat Dec 28 21:00:39 2013 +0100

    Revert "drm/i915: assume all GM45 Acer laptops use inverted backlight PWM"

fix the individual broken machine instead.

Note to backporters:

http://patchwork.freedesktop.org/patch/17837/

is the patch you want for 3.13 and older.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=54171
Reference: http://mid.gmane.org/DUB115-W7628C7C710EA51AA110CD4A5000@xxxxxxx
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Reviewed-by: Ville SyrjÃlà <ville.syrjala@xxxxxxxxxxxxxxx>
[danvet: Patch mangling for 3.14 plus adding the link to the original
for 3.13.]
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
---
 drivers/gpu/drm/i915/intel_display.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c74bf330d290..837cc6cd7472 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10108,6 +10108,9 @@ static struct intel_quirk intel_quirks[] = {
 	/* Acer Aspire 4736Z */
 	{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
 
+	/* Acer Aspire 5336 */
+	{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
+
 	/* Dell XPS13 HD Sandy Bridge */
 	{ 0x0116, 0x1028, 0x052e, quirk_no_pcm_pwm_enable },
 	/* Dell XPS13 HD and XPS13 FHD Ivy Bridge */
-- 
1.9.3

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