From 678bb5deb58183028c896c1ae197e6b3e3a0afe9 Mon Sep 17 00:00:00 2001 From: Carsten Emde Date: Thu, 15 Mar 2012 15:56:27 +0100 Subject: [PATCH] drm/i915: panel: invert brightness acer aspire 5734z commit 5a15ab5b93e4a3ebcd4fa6c76cf646a45e9cf806 upstream. Mark the Acer Aspire 5734Z that this machines requires the module to invert the panel backlight brightness value after reading from and prior to writing to the PCI configuration space. Signed-off-by: Carsten Emde Acked-by: Chris Wilson Signed-off-by: Daniel Vetter Acked-by: Jani Nikula Signed-off-by: Ben Hutchings [wml: Backported to 3.4: Adjust context] Signed-off-by: Weng Meiling Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/intel_display.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 034af1d908710..1ec9ba1819cec 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9201,7 +9201,8 @@ static void quirk_no_pcm_pwm_enable(struct drm_device *dev) } /* - * A machine may need to invert the panel backlight brightness value + * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight + * brightness value */ static void quirk_invert_brightness(struct drm_device *dev) { @@ -9242,6 +9243,9 @@ struct intel_quirk intel_quirks[] = { /* Sony Vaio Y cannot use SSC on LVDS */ { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable }, + /* Acer Aspire 5734Z must invert backlight brightness */ + { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness }, + /* Dell XPS13 HD Sandy Bridge */ { 0x0116, 0x1028, 0x052e, quirk_no_pcm_pwm_enable }, /* Dell XPS13 HD and XPS13 FHD Ivy Bridge */ -- 2.47.3