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drm/i915: Only update mode related state if a modeset happened.

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The rest will be a noop anyway, since without modeset there will be
no updated dplls and no modeset state to update.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Maarten Lankhorst 2015-08-05 12:37:10 +02:00 committed by Daniel Vetter
parent 2d406bb0d9
commit 4740b0f2b8
1 changed files with 7 additions and 23 deletions
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30
drivers/gpu/drm/i915/intel_display.c
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@ -12183,33 +12183,15 @@ fail:
return ret;
}
static bool intel_crtc_in_use(struct drm_crtc *crtc)
{
struct drm_encoder *encoder;
struct drm_device *dev = crtc->dev;
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
if (encoder->crtc == crtc)
return true;
return false;
}
static void
intel_modeset_update_state(struct drm_atomic_state *state)
intel_modeset_update_crtc_state(struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int i;
intel_shared_dpll_commit(state);
drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
/* Double check state. */
for_each_crtc_in_state(state, crtc, crtc_state, i) {
WARN_ON(crtc->state->enable != intel_crtc_in_use(crtc));
to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
/* Update hwmode for vblank functions */
@ -13112,12 +13094,14 @@ static int intel_atomic_commit(struct drm_device *dev,
/* Only after disabling all output pipelines that will be changed can we
* update the the output configuration. */
intel_modeset_update_state(state);
intel_modeset_update_crtc_state(state);
/* The state has been swaped above, so state actually contains the
* old state now. */
if (any_ms)
if (any_ms) {
intel_shared_dpll_commit(state);
drm_atomic_helper_update_legacy_modeset_state(state->dev, state);
modeset_update_crtc_power_domains(state);
}
/* Now enable the clocks, plane, pipe, and connectors that we set up. */
for_each_crtc_in_state(state, crtc, crtc_state, i) {