diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 4 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 1c6c6d743835..b7ae60a376ed 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -1808,6 +1808,17 @@ enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc) static u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + u32 mode_flags = crtc->mode_flags; + + /* + * From Gen 11, In case of dsi cmd mode, frame counter wouldnt + * have updated at the beginning of TE, if we want to use + * the hw counter, then we would find it updated in only + * the next TE, hence switching to sw counter. + */ + if (mode_flags & (I915_MODE_FLAG_DSI_USE_TE0 | I915_MODE_FLAG_DSI_USE_TE1)) + return 0; /* * On i965gm the hardware frame counter reads diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 6835b35729bd..b753c77c9a77 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -682,8 +682,12 @@ u32 i915_get_vblank_counter(struct drm_crtc *crtc) u32 g4x_get_vblank_counter(struct drm_crtc *crtc) { struct drm_i915_private *dev_priv = to_i915(crtc->dev); + struct drm_vblank_crtc *vblank = &dev_priv->drm.vblank[drm_crtc_index(crtc)]; enum pipe pipe = to_intel_crtc(crtc)->pipe; + if (!vblank->max_vblank_count) + return 0; + return I915_READ(PIPE_FRMCOUNT_G4X(pipe)); } |