[Intel-gfx] [PATCH] drm/i915: push commit_output_state past the crtc/encoder preparing
Daniel Vetter
daniel.vetter at ffwll.ch
Fri Aug 31 20:12:10 CEST 2012
With this change we can (finally!) rip out a few of the temporary hacks
and clean up a few other things:
- Kill intel_crtc_prepare_encoders, now unused.
- Kill the hacks in the crtc_disable/enable functions to always call the
encoder callbacks, we now always call the crtc functions with the right
encoder -> crtc links.
- Also push down the crtc->enable, encoder and connector dpms state
updates. Unfortunately we can't add a WARN in the crtc_disable
callbacks to ensure that the crtc is always still enabled when
disabling an output pipe - the crtc sanitizer of the hw readout path
can hit this when it needs to disable an active pipe without any
enabled outputs.
- Only call crtc->disable if the pipe is already enabled - again avoids
running afoul of the new WARN.
v2: Copy&paste our own version of crtc_in_use, too.
v3: We need to update the dpms an encoder->connectors_active states,
too.
v4: I've forgotten to kill the unconditional encoder->disable calls in
the crtc_disable functions.
v5: Rip out leftover debug printk.
v6: Properly clear intel_encoder->connectors_active. This wasn't
properly cleared when disabling an encoder because it was no longer on
the new connector list, but the crtc was still enabled (i.e. switching
the encoder of an active crtc). Reported by Jani Nikula.
v7: Don't clobber the encoder->connectors_active state of untouched
encoders. Since X likes to first disable all outputs with dpms off
before setting a new framebuffer, this hit a few warnings. Reported by
Paulo Zanoni.
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 108 +++++++++++++++++++++++------------
1 file changed, 70 insertions(+), 38 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index dd2098a..991f8e8 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3221,10 +3221,8 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
WARN_ON(!crtc->enabled);
- /* XXX: For compatability with the crtc helper code, call the encoder's
- * enable function unconditionally for now. */
if (intel_crtc->active)
- goto encoders;
+ return;
intel_crtc->active = true;
intel_update_watermarks(dev);
@@ -3272,7 +3270,6 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
intel_crtc_update_cursor(crtc, true);
-encoders:
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->enable(encoder);
@@ -3290,14 +3287,13 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc)
int plane = intel_crtc->plane;
u32 reg, temp;
- /* XXX: For compatability with the crtc helper code, call the encoder's
- * disable function unconditionally for now. */
- for_each_encoder_on_crtc(dev, crtc, encoder)
- encoder->disable(encoder);
if (!intel_crtc->active)
return;
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ encoder->disable(encoder);
+
intel_crtc_wait_for_pending_flips(crtc);
drm_vblank_off(dev, pipe);
intel_crtc_update_cursor(crtc, false);
@@ -3399,10 +3395,8 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)
WARN_ON(!crtc->enabled);
- /* XXX: For compatability with the crtc helper code, call the encoder's
- * enable function unconditionally for now. */
if (intel_crtc->active)
- goto encoders;
+ return;
intel_crtc->active = true;
intel_update_watermarks(dev);
@@ -3418,7 +3412,6 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)
intel_crtc_dpms_overlay(intel_crtc, true);
intel_crtc_update_cursor(crtc, true);
-encoders:
for_each_encoder_on_crtc(dev, crtc, encoder)
encoder->enable(encoder);
}
@@ -3432,14 +3425,13 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
- /* XXX: For compatability with the crtc helper code, call the encoder's
- * disable function unconditionally for now. */
- for_each_encoder_on_crtc(dev, crtc, encoder)
- encoder->disable(encoder);
if (!intel_crtc->active)
return;
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ encoder->disable(encoder);
+
/* Give the overlay scaler a chance to disable if it's on this pipe */
intel_crtc_wait_for_pending_flips(crtc);
drm_vblank_off(dev, pipe);
@@ -6631,18 +6623,6 @@ static bool intel_encoder_crtc_ok(struct drm_encoder *encoder,
return false;
}
-static void
-intel_crtc_prepare_encoders(struct drm_device *dev)
-{
- struct intel_encoder *encoder;
-
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
- /* Disable unused encoders */
- if (encoder->base.crtc == NULL)
- encoder->disable(encoder);
- }
-}
-
/**
* intel_modeset_update_staged_output_state
*
@@ -6822,6 +6802,60 @@ intel_modeset_affected_pipes(struct drm_crtc *crtc, unsigned *modeset_pipes,
*prepare_pipes &= ~(*disable_pipes);
}
+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_device *dev, unsigned prepare_pipes)
+{
+ struct intel_encoder *intel_encoder;
+ struct intel_crtc *intel_crtc;
+ struct drm_connector *connector;
+
+ list_for_each_entry(intel_encoder, &dev->mode_config.encoder_list,
+ base.head) {
+ if (!intel_encoder->base.crtc)
+ continue;
+
+ intel_crtc = to_intel_crtc(intel_encoder->base.crtc);
+
+ if (prepare_pipes & (1 << intel_crtc->pipe))
+ intel_encoder->connectors_active = false;
+ }
+
+ intel_modeset_commit_output_state(dev);
+
+ /* Update computed state. */
+ list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list,
+ base.head) {
+ intel_crtc->base.enabled = intel_crtc_in_use(&intel_crtc->base);
+ }
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (!connector->encoder || !connector->encoder->crtc)
+ continue;
+
+ intel_crtc = to_intel_crtc(connector->encoder->crtc);
+
+ if (prepare_pipes & (1 << intel_crtc->pipe)) {
+ connector->dpms = DRM_MODE_DPMS_ON;
+
+ intel_encoder = to_intel_encoder(connector->encoder);
+ intel_encoder->connectors_active = true;
+ }
+ }
+
+}
+
#define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
list_for_each_entry((intel_crtc), \
&(dev)->mode_config.crtc_list, \
@@ -6850,12 +6884,6 @@ bool intel_set_mode(struct drm_crtc *crtc,
for_each_intel_crtc_masked(dev, disable_pipes, intel_crtc)
intel_crtc_disable(&intel_crtc->base);
- intel_modeset_commit_output_state(dev);
-
- list_for_each_entry(intel_crtc, &dev->mode_config.crtc_list,
- base.head)
- intel_crtc->base.enabled = drm_helper_crtc_in_use(crtc);
-
saved_hwmode = crtc->hwmode;
saved_mode = crtc->mode;
@@ -6870,12 +6898,12 @@ bool intel_set_mode(struct drm_crtc *crtc,
if (IS_ERR(adjusted_mode)) {
return false;
}
-
- intel_crtc_prepare_encoders(dev);
}
- for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc)
- dev_priv->display.crtc_disable(&intel_crtc->base);
+ for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc) {
+ if (intel_crtc->base.enabled)
+ dev_priv->display.crtc_disable(&intel_crtc->base);
+ }
if (modeset_pipes) {
crtc->mode = *mode;
@@ -6883,6 +6911,10 @@ bool intel_set_mode(struct drm_crtc *crtc,
crtc->y = y;
}
+ /* Only after disabling all output pipelines that will be changed can we
+ * update the the output configuration. */
+ intel_modeset_update_state(dev, prepare_pipes);
+
/* Set up the DPLL and any encoders state that needs to adjust or depend
* on the DPLL.
*/
--
1.7.11.2
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