From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Linetime watermarks don't exist on ILK/SNB/IVB, so don't compute them
except on HSW.
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 023be16..954c1fb 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2656,7 +2656,8 @@ 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]);
@@ -3235,7 +3236,8 @@ 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];
--
1.8.3.2
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