linux-kernel - [PATCH 3.16.y-ckt 007/126] drm/i915: quirk backlight present on Macbook 4, 1

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Message-Id: <1452076655-12851-8-git-send-email-luis.henriques@canonical.com>
Date:	Wed,  6 Jan 2016 10:35:36 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Jani Nikula <jani.nikula@...el.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 007/126] drm/i915: quirk backlight present on Macbook 4, 1

3.16.7-ckt22 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jani Nikula <jani.nikula@...el.com>

commit 1b9448b071caa7d10bb2569fabe3020a2c25ae59 upstream.

Unsurprisingly macbooks have backlights, just the VBT doesn't seem to
know it in this case.

Reported-and-tested-by: Daniel Nicoletti <dantti12@...il.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88325
Fixes: c675949ec58c ("drm/i915: do not setup backlight if not available according to VBT")
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@...il.com>
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1446716999-1796-1-git-send-email-jani.nikula@intel.com
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 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 c35353aadd02..b019c563a787 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11703,6 +11703,9 @@ static struct intel_quirk intel_quirks[] = {
 	/* Apple Macbook 2,1 (Core 2 T7400) */
 	{ 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
 
+	/* Apple Macbook 4,1 */
+	{ 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
+
 	/* Toshiba CB35 Chromebook (Celeron 2955U) */
 	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
 
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