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drm/i915: Remove crtc->config dereference from drrs_ctl 

Wait for idle, and iterate over connectors instead of encoders.
With this information we know crtc->state is the actual state,
and we can enable/disable drrs safely.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181011100457.8776-2-maarten.lankhorst@linux.intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
This commit is contained in:
Maarten Lankhorst 2018-10-11 12:04:48 +02:00
parent 914a4fd8cd
commit 138bdac891
1 changed files with 42 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -4660,20 +4660,45 @@ static int i915_drrs_ctl_set(void *data, u64 val)
{
struct drm_i915_private *dev_priv = data;
struct drm_device *dev = &dev_priv->drm;
struct intel_crtc *intel_crtc;
struct intel_encoder *encoder;
struct intel_dp *intel_dp;
struct intel_crtc *crtc;
if (INTEL_GEN(dev_priv) < 7)
return -ENODEV;
drm_modeset_lock_all(dev);
for_each_intel_crtc(dev, intel_crtc) {
if (!intel_crtc->base.state->active ||
!intel_crtc->config->has_drrs)
for_each_intel_crtc(dev, crtc) {
struct drm_connector_list_iter conn_iter;
struct intel_crtc_state *crtc_state;
struct drm_connector *connector;
struct drm_crtc_commit *commit;
int ret;
ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
if (ret)
return ret;
crtc_state = to_intel_crtc_state(crtc->base.state);
if (!crtc_state->base.active ||
!crtc_state->has_drrs)
goto out;
commit = crtc_state->base.commit;
if (commit) {
ret = wait_for_completion_interruptible(&commit->hw_done);
if (ret)
goto out;
}
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
struct intel_encoder *encoder;
struct intel_dp *intel_dp;
if (!(crtc_state->base.connector_mask &
drm_connector_mask(connector)))
continue;
for_each_encoder_on_crtc(dev, &intel_crtc->base, encoder) {
encoder = intel_attached_encoder(connector);
if (encoder->type != INTEL_OUTPUT_EDP)
continue;
@ -4683,13 +4708,18 @@ static int i915_drrs_ctl_set(void *data, u64 val)
intel_dp = enc_to_intel_dp(&encoder->base);
if (val)
intel_edp_drrs_enable(intel_dp,
intel_crtc->config);
crtc_state);
else
intel_edp_drrs_disable(intel_dp,
intel_crtc->config);
crtc_state);
}
drm_connector_list_iter_end(&conn_iter);
out:
drm_modeset_unlock(&crtc->base.mutex);
if (ret)
return ret;
}
drm_modeset_unlock_all(dev);
return 0;
}