Attachment 33484 Details for Bug 26395 – try the debug patch that the LVDS edid when it is unavailable or invalid

[patch] try the debug patch that the LVDS edid when it is unavailable or invalid

0001-drm-i915-Ignore-LVDS-EDID-when-it-is-unavailabe-or.patch (text/plain), 1.97 KB, created by ykzhao on 2010-02-22 00:31:08 UTC

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Creator: ykzhao

Created: 2010-02-22 00:31:08 UTC

Size: 1.97 KB

patch

obsolete

>From a9eaac4b1e8491ed278b0362f1b1045fcf1e5d72 Mon Sep 17 00:00:00 2001
>From: Zhao Yakui <yakui.zhao@intel.com>
>Date: Mon, 22 Feb 2010 16:25:56 +0800
>Subject: [PATCH] drm/i915: Ignore LVDS EDID when it is unavailabe or invalid
>
>Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
>---
> drivers/gpu/drm/i915/i915_drv.h   |    1 +
> drivers/gpu/drm/i915/intel_lvds.c |   13 +++++++++----
> 2 files changed, 10 insertions(+), 4 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
>index 953ad64..6889c42 100644
>--- a/drivers/gpu/drm/i915/i915_drv.h
>+++ b/drivers/gpu/drm/i915/i915_drv.h
>@@ -580,6 +580,7 @@ typedef struct drm_i915_private {
> 		struct drm_i915_gem_phys_object *phys_objs[I915_MAX_PHYS_OBJECT];
> 	} mm;
> 	struct sdvo_device_mapping sdvo_mappings[2];
>+	bool	lvds_edid_ok;
> 	/* indicate whether the LVDS_BORDER should be enabled or not */
> 	unsigned int lvds_border_bits;
> 
>diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
>index 10462ef..3c72730 100644
>--- a/drivers/gpu/drm/i915/intel_lvds.c
>+++ b/drivers/gpu/drm/i915/intel_lvds.c
>@@ -680,10 +680,13 @@ static int intel_lvds_get_modes(struct drm_connector *connector)
> 	struct drm_i915_private *dev_priv = dev->dev_private;
> 	int ret = 0;
> 
>-	ret = intel_ddc_get_modes(intel_output);
>+	if (dev_priv->lvds_edid_ok) {
>+		ret = intel_ddc_get_modes(intel_output);
>+		if (ret)
>+			return ret;
> 
>-	if (ret)
>-		return ret;
>+		dev_priv->lvds_edid_ok = 0;
>+	}
> 
> 	/* Didn't get an EDID, so
> 	 * Set wide sync ranges so we get all modes
>@@ -1092,11 +1095,13 @@ void intel_lvds_init(struct drm_device *dev)
> 		goto failed;
> 	}
> 
>+	dev_priv->lvds_edid_ok = 1;
> 	/*
> 	 * Attempt to get the fixed panel mode from DDC.  Assume that the
> 	 * preferred mode is the right one.
> 	 */
>-	intel_ddc_get_modes(intel_output);
>+	if (!intel_ddc_get_modes(intel_output))
>+		dev_priv->lvds_edid_ok = 0;
> 
> 	list_for_each_entry(scan, &connector->probed_modes, head) {
> 		mutex_lock(&dev->mode_config.mutex);
>-- 
>1.5.4.5
>

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Attachments on bug 26395: 33012 | 33013 | 33144 | 33189 | 33484

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