diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 232d8c3b1f10..c43cf138c871 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2896,16 +2896,23 @@ static void hsw_write_wm_values(struct drm_i915_private *dev_priv, if (!dirty) return; - if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != 0) - I915_WRITE(WM3_LP_ILK, 0); - if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != 0) - I915_WRITE(WM2_LP_ILK, 0); - if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != 0) - I915_WRITE(WM1_LP_ILK, 0); + if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM1_LP_SR_EN) { + previous->wm_lp[2] &= ~WM1_LP_SR_EN; + I915_WRITE(WM3_LP_ILK, previous->wm_lp[2]); + } + if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM1_LP_SR_EN) { + previous->wm_lp[1] &= ~WM1_LP_SR_EN; + I915_WRITE(WM2_LP_ILK, previous->wm_lp[1]); + } + if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM1_LP_SR_EN) { + previous->wm_lp[0] &= ~WM1_LP_SR_EN; + I915_WRITE(WM1_LP_ILK, previous->wm_lp[0]); + } - if (INTEL_INFO(dev)->gen <= 6 && - dirty & WM_DIRTY_LP(1) && previous->wm_lp_spr[0] != 0) - I915_WRITE(WM1S_LP_ILK, 0); + /* + * Don't touch WM1S_LP_EN here. + * Doing so could cause underruns. + */ if (dirty & WM_DIRTY_PIPE(PIPE_A)) I915_WRITE(WM0_PIPEA_ILK, results->wm_pipe[0]); @@ -2949,7 +2956,7 @@ static void hsw_write_wm_values(struct drm_i915_private *dev_priv, } if (INTEL_INFO(dev)->gen <= 6) { - if (dirty & WM_DIRTY_LP(1) && results->wm_lp_spr[0] != 0) + if (dirty & WM_DIRTY_LP(1) && previous->wm_lp_spr[0] != results->wm_lp_spr[0]) I915_WRITE(WM1S_LP_ILK, results->wm_lp_spr[0]); } else { if (dirty & WM_DIRTY_LP(1) && previous->wm_lp_spr[0] != results->wm_lp_spr[0]) @@ -2960,11 +2967,11 @@ static void hsw_write_wm_values(struct drm_i915_private *dev_priv, I915_WRITE(WM3S_LP_IVB, results->wm_lp_spr[2]); } - if (dirty & WM_DIRTY_LP(1) && results->wm_lp[0] != 0) + if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] != results->wm_lp[0]) I915_WRITE(WM1_LP_ILK, results->wm_lp[0]); - if (dirty & WM_DIRTY_LP(2) && results->wm_lp[1] != 0) + if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] != results->wm_lp[1]) I915_WRITE(WM2_LP_ILK, results->wm_lp[1]); - if (dirty & WM_DIRTY_LP(3) && results->wm_lp[2] != 0) + if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] != results->wm_lp[2]) I915_WRITE(WM3_LP_ILK, results->wm_lp[2]); dev_priv->wm.hw = *results; |