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drm/i915: Don't merge LP1+ watermarks on ILK/SNB/IVB when multiple pipes are enabled 

Multi-pipe LP1+ watermarks are a HSW+ feature, so let's not do it on
earlier generations.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-12-05 15:51:34 +02:00 committed by Daniel Vetter
parent facd619b88
commit 0ba22e26fe
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/i915/intel_pm.c
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@ -2690,11 +2690,17 @@ static void ilk_merge_wm_level(struct drm_device *dev,
* Merge all low power watermarks for all active pipes.
*/
static void ilk_wm_merge(struct drm_device *dev,
const struct intel_wm_config *config,
const struct hsw_wm_maximums *max,
struct intel_pipe_wm *merged)
{
int level, max_level = ilk_wm_max_level(dev);
/* ILK/SNB/IVB: LP1+ watermarks only w/ single pipe */
if ((INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev)) &&
config->num_pipes_active > 1)
return;
merged->fbc_wm_enabled = true;
/* merge each WM1+ level */
@ -3000,13 +3006,13 @@ static void haswell_update_wm(struct drm_crtc *crtc)
intel_crtc->wm.active = pipe_wm;
ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_1_2, &max);
ilk_wm_merge(dev, &max, &lp_wm_1_2);
ilk_wm_merge(dev, &config, &max, &lp_wm_1_2);
/* 5/6 split only in single pipe config on IVB+ */
if (INTEL_INFO(dev)->gen >= 7 &&
config.num_pipes_active == 1 && config.sprites_enabled) {
ilk_compute_wm_maximums(dev, 1, &config, INTEL_DDB_PART_5_6, &max);
ilk_wm_merge(dev, &max, &lp_wm_5_6);
ilk_wm_merge(dev, &config, &max, &lp_wm_5_6);
best_lp_wm = hsw_find_best_result(dev, &lp_wm_1_2, &lp_wm_5_6);
} else {