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drm/i915: Linetime watermarks are a HSW feature 

Linetime watermarks don't exist on ILK/SNB/IVB, so don't compute them
except on HSW.

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 15:51:36 +02:00 committed by Daniel Vetter
parent 6c8b6c2887
commit ce0e0713a6
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/intel_pm.c
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@ -2655,7 +2655,8 @@ static bool intel_compute_pipe_wm(struct drm_crtc *crtc,
ilk_compute_wm_level(dev_priv, level, params,
&pipe_wm->wm[level]);
pipe_wm->linetime = hsw_compute_linetime_wm(dev, crtc);
if (IS_HASWELL(dev))
pipe_wm->linetime = hsw_compute_linetime_wm(dev, crtc);
/* At least LP0 must be valid */
return ilk_validate_wm_level(0, &max, &pipe_wm->wm[0]);
@ -3234,7 +3235,8 @@ static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc)
};
hw->wm_pipe[pipe] = I915_READ(wm0_pipe_reg[pipe]);
hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe));
if (IS_HASWELL(dev))
hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe));
if (intel_crtc_active(crtc)) {
u32 tmp = hw->wm_pipe[pipe];