Attachment 27838 Details for Bug 22780 – pleaset try the debug patch on your machine in KMS mode, thanks.

pleaset try the debug patch on your machine in KMS mode, thanks.

print_mode_line_in_kms.patch (text/plain), 2.11 KB, created by MaLing on 2009-07-20 00:44:16 UTC

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Creator: MaLing

Created: 2009-07-20 00:44:16 UTC

Size: 2.11 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
>index d6a1a6e..57f042a 100644
>--- a/drivers/gpu/drm/i915/intel_crt.c
>+++ b/drivers/gpu/drm/i915/intel_crt.c
>@@ -32,6 +32,15 @@
> #include "intel_drv.h"
> #include "i915_drm.h"
> #include "i915_drv.h"
>+static void printmodeline(struct drm_display_mode *mode)
>+{
>+	printk("Modeline %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
>+		mode->base.id, mode->name, mode->vrefresh, mode->clock,
>+		mode->hdisplay, mode->hsync_start,
>+		mode->hsync_end, mode->htotal,
>+		mode->vdisplay, mode->vsync_start,
>+		mode->vsync_end, mode->vtotal, mode->type, mode->flags);
>+}
> 
> static void intel_crt_dpms(struct drm_encoder *encoder, int mode)
> {
>@@ -72,19 +81,33 @@ static int intel_crt_mode_valid(struct drm_connector *connector,
> 	struct drm_device *dev = connector->dev;
> 
> 	int max_clock = 0;
>-	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
>+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN) {
>+		printk("\n DEBUG:the mode line is DBLSCAN flags is %x\n",
>+			mode->flags);
>+		printmodeline(mode);
> 		return MODE_NO_DBLESCAN;
>+	}
> 
>-	if (mode->clock < 25000)
>+	if (mode->clock < 25000) {
>+		printk("\n DEBUG:the mode line clock is less 25000,"
>+			"clock is %d\n", mode->clock);
>+		printmodeline(mode);
> 		return MODE_CLOCK_LOW;
>+	}
> 
> 	if (!IS_I9XX(dev))
> 		max_clock = 350000;
> 	else
> 		max_clock = 400000;
>-	if (mode->clock > max_clock)
>+	if (mode->clock > max_clock) {
>+		printk("\n DEBUG:the mode line clock is bigger than max value,"
>+			"clock is %d\n", mode->clock);
>+		printmodeline(mode);
> 		return MODE_CLOCK_HIGH;
>+	}
> 
>+	printk("DEBUG: the mode line is valid \n");
>+	printmodeline(mode);
> 	return MODE_OK;
> }
> 
>@@ -454,6 +477,15 @@ static int intel_crt_get_modes(struct drm_connector *connector)
> 	intel_i2c_destroy(ddcbus);
> 
> end:
>+	if (ret) {
>+			struct drm_display_mode *t, *cur_mode;
>+			printk("\n DEBUG: print all modes from EDID START\n");
>+			list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head)
>+				printmodeline(cur_mode);
>+			printk("\n DEBUG: print all modes from EDID END\n");
>+	} else
>+		printk("\n DEBUG no modes from EDID\n");
>+
> 	return ret;
> 
> }

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Attachments on bug 22780: 27720 | 27721 | 27722 | 27838

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