diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 15 |
3 files changed, 21 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index c0f19f5..e7a00b7 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -295,6 +295,7 @@ enum intel_pch { #define QUIRK_PIPEA_FORCE (1<<0) #define QUIRK_LVDS_SSC_DISABLE (1<<1) +#define QUIRK_INVERT_BRIGHTNESS (1<<2) struct intel_fbdev; struct intel_fbc_work; diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 615b397..92208f8 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9020,6 +9020,15 @@ static void quirk_ssc_force_disable(struct drm_device *dev) dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE; } +/* + * A machine may need to invert the panel backlight brightness value + */ +static void quirk_invert_brightness(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS; +} + struct intel_quirk { int device; int subsystem_vendor; diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index c4b3f34..7998ca6 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -192,15 +192,22 @@ u32 intel_panel_get_max_backlight(struct drm_device *dev) return max; } -static bool i915_panel_invert_brightness; -MODULE_PARM_DESC(invert_brightness, "Invert backlight brightness, please " +static int i915_panel_invert_brightness; +MODULE_PARM_DESC(invert_brightness, "Invert backlight brightness " + "(-1 force normal, 0 machine defaults, 1 force inversion), please " "report PCI device ID, subsystem vendor and subsystem device ID " "to dri-devel@lists.freedesktop.org, if your machine needs it. " "It will then be included in an upcoming module version."); -module_param_named(invert_brightness, i915_panel_invert_brightness, bool, 0600); +module_param_named(invert_brightness, i915_panel_invert_brightness, int, 0600); static u32 intel_panel_compute_brightness(struct drm_device *dev, u32 val) { - if (i915_panel_invert_brightness) + struct drm_i915_private *dev_priv = dev->dev_private; + + if (i915_panel_invert_brightness < 0) + return val; + + if (i915_panel_invert_brightness > 0 || + dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) return intel_panel_get_max_backlight(dev) - val; return val; |
