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drm: make mode comparison more betterer.

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This compares the clocks after converting to fb pico timings so we
get the same answer if the X and fb modes are the same.
This commit is contained in:
Dave Airlie 2008-06-04 10:34:34 +10:00
parent 3ed17803d8
commit 40229b6ad5
1 changed files with 9 additions and 2 deletions
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11
linux-core/drm_modes.c
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@ -276,8 +276,15 @@ EXPORT_SYMBOL(drm_mode_duplicate);
*/
bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mode2)
{
if (mode1->clock == mode2->clock &&
mode1->hdisplay == mode2->hdisplay &&
/* do clock check convert to PICOS so fb modes get matched
* the same */
if (mode1->clock && mode2->clock) {
if (KHZ2PICOS(mode1->clock) != KHZ2PICOS(mode2->clock))
return false;
} else if (mode1->clock != mode2->clock)
return false;
if (mode1->hdisplay == mode2->hdisplay &&
mode1->hsync_start == mode2->hsync_start &&
mode1->hsync_end == mode2->hsync_end &&
mode1->htotal == mode2->htotal &&