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drm/i915: use the mode->htotal to calculate linetime watermarks

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... instead of mode->crtc_display. The spec says "pipe horizontal
total number of pixels" and the "Haswell Watermark Calculator" tool
uses the "Pipe H Total" instead of "Pipe H Src" as the value.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2013-05-03 17:23:39 -03:00 committed by Daniel Vetter
parent 1011d8c437
commit 7366937312
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_pm.c
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@ -2093,7 +2093,7 @@ haswell_update_linetime_wm(struct drm_device *dev, struct drm_crtc *crtc)
* row at the given clock rate, multiplied by 8.
* */
temp |= PIPE_WM_LINETIME_TIME(
((mode->crtc_hdisplay * 1000) / mode->clock) * 8);
((mode->htotal * 1000) / mode->clock) * 8);
/* IPS watermarks are only used by pipe A, and are ignored by
* pipes B and C. They are calculated similarly to the common