Right now dpms callbacks can still fiddle with the connector state,
but it can only turn connectors off.
This is remediated by only checking crtc->state->active when the
connector is active, and ignore crtc->state->active when the
connector is off.
connectors_active is no longer checked, and will be removed later
in this series together with dpms.
Another check for !encoder->crtc is performed by check_encoder_state
too, so it can be removed.
Changes since v1:
- Add commit message.
- rename state to old_state.
- Move deletion of mst_port check to mst patch.
Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 66 +++++++++++++++++-------------------
1 file changed, 32 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 77b4da7e698c..876071ad4681 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6360,38 +6360,33 @@ static void intel_encoder_dpms(struct intel_encoder
*encoder, int mode)
* internal consistency). */
static void intel_connector_check_state(struct intel_connector *connector)
{
- if (connector->get_hw_state(connector)) {
- struct intel_encoder *encoder = connector->encoder;
- struct drm_crtc *crtc;
- bool encoder_enabled;
- enum pipe pipe;
+ struct drm_crtc *crtc = connector->base.state->crtc;
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
- connector->base.base.id,
- connector->base.name);
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+ connector->base.base.id,
+ connector->base.name);
- I915_STATE_WARN(connector->base.dpms == DRM_MODE_DPMS_OFF,
- "wrong connector dpms state\n");
- I915_STATE_WARN(connector->base.encoder != &encoder->base,
- "active connector not linked to encoder\n");
+ if (connector->get_hw_state(connector)) {
+ struct drm_encoder *encoder = &connector->encoder->base;
+ struct drm_connector_state *conn_state = connector->base.state;
- if (encoder) {
- I915_STATE_WARN(!encoder->connectors_active,
- "encoder->connectors_active not set\n");
+ I915_STATE_WARN(!crtc,
+ "connector enabled without attached crtc\n");
- encoder_enabled = encoder->get_hw_state(encoder, &pipe);
- I915_STATE_WARN(!encoder_enabled, "encoder not
enabled\n");
- if (I915_STATE_WARN_ON(!encoder->base.crtc))
- return;
+ if (!crtc)
+ return;
- crtc = encoder->base.crtc;
+ I915_STATE_WARN(!crtc->state->active,
+ "connector is active, but attached crtc isn't\n");
- I915_STATE_WARN(!crtc->state->enable,
- "crtc not enabled\n");
- I915_STATE_WARN(!to_intel_crtc(crtc)->active, "crtc not
active\n");
- I915_STATE_WARN(pipe != to_intel_crtc(crtc)->pipe,
- "encoder active on the wrong pipe\n");
- }
+ I915_STATE_WARN(conn_state->best_encoder != encoder,
+ "atomic encoder doesn't match attached encoder\n");
+
+ I915_STATE_WARN(conn_state->crtc != encoder->crtc,
+ "attached encoder crtc differs from connector crtc\n");
+ } else {
+ I915_STATE_WARN(!crtc && connector->base.state->best_encoder,
+ "best encoder set without crtc!\n");
}
}
@@ -12699,20 +12694,23 @@ static void check_wm_state(struct drm_device *dev)
}
static void
-check_connector_state(struct drm_device *dev)
+check_connector_state(struct drm_device *dev,
+ struct drm_atomic_state *old_state)
{
- struct intel_connector *connector;
+ struct drm_connector_state *old_conn_state;
+ struct drm_connector *connector;
+ int i;
- for_each_intel_connector(dev, connector) {
- struct drm_encoder *encoder = connector->base.encoder;
- struct drm_connector_state *state = connector->base.state;
+ for_each_connector_in_state(old_state, connector, old_conn_state, i) {
+ struct drm_encoder *encoder = connector->encoder;
+ struct drm_connector_state *state = connector->state;
/* This also checks the encoder/connector hw state with the
* ->get_hw_state callbacks. */
- intel_connector_check_state(connector);
+ intel_connector_check_state(to_intel_connector(connector));
I915_STATE_WARN(state->best_encoder != encoder,
- "connector's staged encoder doesn't match current
encoder\n");
+ "connector's atomic encoder doesn't match legacy
encoder\n");
}
}
@@ -12903,7 +12901,7 @@ intel_modeset_check_state(struct drm_device *dev,
struct drm_atomic_state *old_state)
{
check_wm_state(dev);
- check_connector_state(dev);
+ check_connector_state(dev, old_state);
check_encoder_state(dev);
check_crtc_state(dev);
check_shared_dpll_state(dev);
--
2.1.0
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