Attachment 101813 Details for Bug 79813 – Patch against Linux 3.16-rc2

[patch] Patch against Linux 3.16-rc2

Linux3.16-rc2-patch (text/plain), 2.36 KB, created by Scot Doyle on 2014-06-26 16:08:06 UTC

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Creator: Scot Doyle

Created: 2014-06-26 16:08:06 UTC

Size: 2.36 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
>index 49414d3..6eab457 100644
>--- a/drivers/gpu/drm/i915/i915_drv.h
>+++ b/drivers/gpu/drm/i915/i915_drv.h
>@@ -656,6 +656,7 @@ enum intel_sbi_destination {
> #define QUIRK_PIPEA_FORCE (1<<0)
> #define QUIRK_LVDS_SSC_DISABLE (1<<1)
> #define QUIRK_INVERT_BRIGHTNESS (1<<2)
>+#define QUIRK_BACKLIGHT_PRESENT (1<<3)
> 
> 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 efd3cf5..dd810a7 100644
>--- a/drivers/gpu/drm/i915/intel_display.c
>+++ b/drivers/gpu/drm/i915/intel_display.c
>@@ -11565,6 +11565,14 @@ static void quirk_invert_brightness(struct drm_device *dev)
> 	DRM_INFO("applying inverted panel brightness quirk\n");
> }
> 
>+/* Some VBT's incorrectly indicate no backlight is present */
>+static void quirk_backlight_present(struct drm_device *dev)
>+{
>+	struct drm_i915_private *dev_priv = dev->dev_private;
>+	dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
>+	DRM_INFO("applying backlight present quirk\n");
>+}
>+
> struct intel_quirk {
> 	int device;
> 	int subsystem_vendor;
>@@ -11633,6 +11641,18 @@ static struct intel_quirk intel_quirks[] = {
> 
> 	/* Acer Aspire 5336 */
> 	{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
>+
>+	/* Acer C720 Chromebook has a backlight */
>+	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
>+
>+	/* Dell 11 Chromebook */
>+	{ 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
>+
>+	/* HP 14 (Celeron 2955U) Chromebook */
>+	{ 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
>+
>+	/* Toshiba CB35 Chromebook */
>+	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
> };
> 
> static void intel_init_quirks(struct drm_device *dev)
>diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
>index 38a9857..dfc6b5f 100644
>--- a/drivers/gpu/drm/i915/intel_panel.c
>+++ b/drivers/gpu/drm/i915/intel_panel.c
>@@ -1118,8 +1118,13 @@ int intel_panel_setup_backlight(struct drm_connector *connector)
> 	int ret;
> 
> 	if (!dev_priv->vbt.backlight.present) {
>-		DRM_DEBUG_KMS("native backlight control not available per VBT\n");
>-		return 0;
>+		if (dev_priv->quirks & QUIRK_BACKLIGHT_PRESENT) {
>+			DRM_DEBUG_KMS("no backlight present per VBT, but "
>+				      "present per quirk\n");
>+		} else {
>+			DRM_DEBUG_KMS("no backlight present per VBT\n");
>+			return 0;
>+		}
> 	}
> 
> 	/* set level and max in panel struct */

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Attachments on bug 79813: 101189 | 101190 | 101223 | 101229 | 101230 | 101231 | 101813 | 101814 | 101879

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