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drm/i915/drrs: Restrict buffer tracking to the DRRS pipe

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The current code tracks business across all pipes, but we're only
really interested in the one pipe DRRS is enabled on. Fairly tiny
optimization, but something I noticed while reading the code. But it
might matter a bit when e.g. showing a video or something only on the
external screen, while the panel is kept static.

Also regroup the code slightly: First compute new bitmasks, then take
appropriate actions.

Cc: Ramalingam C <ramalingam.c@intel.com>
Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter 2015-06-18 10:30:25 +02:00
parent 251ac86219
commit c1d038c6e2
1 changed files with 7 additions and 6 deletions
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13
drivers/gpu/drm/i915/intel_dp.c
View file

@ -5534,16 +5534,15 @@ void intel_edp_drrs_invalidate(struct drm_device *dev,
crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc;
pipe = to_intel_crtc(crtc)->pipe;
frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe);
dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits;
/* invalidate means busy screen hence upclock */
if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR) {
if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR)
intel_dp_set_drrs_state(dev_priv->dev,
dev_priv->drrs.dp->attached_connector->panel.
fixed_mode->vrefresh);
}
frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe);
dev_priv->drrs.busy_frontbuffer_bits |= frontbuffer_bits;
mutex_unlock(&dev_priv->drrs.mutex);
}
@ -5579,10 +5578,12 @@ void intel_edp_drrs_flush(struct drm_device *dev,
crtc = dp_to_dig_port(dev_priv->drrs.dp)->base.base.crtc;
pipe = to_intel_crtc(crtc)->pipe;
frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe);
dev_priv->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits;
/* flush means busy screen hence upclock */
if (dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR)
if (frontbuffer_bits && dev_priv->drrs.refresh_rate_type == DRRS_LOW_RR)
intel_dp_set_drrs_state(dev_priv->dev,
dev_priv->drrs.dp->attached_connector->panel.
fixed_mode->vrefresh);