[Intel-gfx] [PATCH 2/7] drm/i915: Pass the crtc state explicitly to intel_pipe_update_start/end()

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Pass the appropriate new crtc state explicitly to
intel_pipe_update_start/end() instead of of mucking around with
crtc->state.

v2: The mmio flip stuff is gone

Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 14 +++++++++-----
 drivers/gpu/drm/i915/intel_drv.h     | 12 ++++++++++--
 drivers/gpu/drm/i915/intel_sprite.c  | 27 +++++++++++++--------------
 3 files changed, 32 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 80a14b30e4d3..cee4db0a1626 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12917,13 +12917,13 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc,
 	struct drm_device *dev = crtc->dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	struct intel_crtc_state *intel_cstate =
-		to_intel_crtc_state(crtc->state);
 	struct intel_crtc_state *old_intel_cstate =
 		to_intel_crtc_state(old_crtc_state);
 	struct intel_atomic_state *old_intel_state =
 		to_intel_atomic_state(old_crtc_state->state);
-	bool modeset = needs_modeset(crtc->state);
+	struct intel_crtc_state *intel_cstate =
+		intel_atomic_get_new_crtc_state(old_intel_state, intel_crtc);
+	bool modeset = needs_modeset(&intel_cstate->base);
 
 	if (!modeset &&
 	    (intel_cstate->base.color_mgmt_changed ||
@@ -12933,7 +12933,7 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc,
 	}
 
 	/* Perform vblank evasion around commit operation */
-	intel_pipe_update_start(intel_crtc);
+	intel_pipe_update_start(intel_cstate);
 
 	if (modeset)
 		goto out;
@@ -12953,8 +12953,12 @@ static void intel_finish_crtc_commit(struct drm_crtc *crtc,
 				     struct drm_crtc_state *old_crtc_state)
 {
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	struct intel_atomic_state *old_intel_state =
+		to_intel_atomic_state(old_crtc_state->state);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(old_intel_state, intel_crtc);
 
-	intel_pipe_update_end(intel_crtc);
+	intel_pipe_update_end(new_crtc_state);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f60995fe455c..9a7c7dd0ea84 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1190,6 +1190,14 @@ hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
 	return container_of(intel_hdmi, struct intel_digital_port, hdmi);
 }
 
+static inline struct intel_crtc_state *
+intel_atomic_get_new_crtc_state(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
+{
+	return to_intel_crtc_state(drm_atomic_get_new_crtc_state(&state->base,
+								 &crtc->base));
+}
+
 /* intel_fifo_underrun.c */
 bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
 					   enum pipe pipe, bool enable);
@@ -1888,8 +1896,8 @@ struct intel_plane *intel_sprite_plane_create(struct drm_i915_private *dev_priv,
 					      enum pipe pipe, int plane);
 int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
 			      struct drm_file *file_priv);
-void intel_pipe_update_start(struct intel_crtc *crtc);
-void intel_pipe_update_end(struct intel_crtc *crtc);
+void intel_pipe_update_start(const struct intel_crtc_state *new_crtc_state);
+void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state);
 
 /* intel_tv.c */
 void intel_tv_init(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 524933b01483..b0d6e3e28d07 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -70,8 +70,7 @@ int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
 
 /**
  * intel_pipe_update_start() - start update of a set of display registers
- * @crtc: the crtc of which the registers are going to be updated
- * @start_vbl_count: vblank counter return pointer used for error checking
+ * @new_crtc_state: the new crtc state
  *
  * Mark the start of an update to pipe registers that should be updated
  * atomically regarding vblank. If the next vblank will happens within
@@ -79,18 +78,18 @@ int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
  *
  * After a successful call to this function, interrupts will be disabled
  * until a subsequent call to intel_pipe_update_end(). That is done to
- * avoid random delays. The value written to @start_vbl_count should be
- * supplied to intel_pipe_update_end() for error checking.
+ * avoid random delays.
  */
-void intel_pipe_update_start(struct intel_crtc *crtc)
+void intel_pipe_update_start(const struct intel_crtc_state *new_crtc_state)
 {
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
+	const struct drm_display_mode *adjusted_mode = &new_crtc_state->base.adjusted_mode;
 	long timeout = msecs_to_jiffies_timeout(1);
 	int scanline, min, max, vblank_start;
 	wait_queue_head_t *wq = drm_crtc_vblank_waitqueue(&crtc->base);
 	bool need_vlv_dsi_wa = (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
-		intel_crtc_has_type(crtc->config, INTEL_OUTPUT_DSI);
+		intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI);
 	DEFINE_WAIT(wait);
 
 	vblank_start = adjusted_mode->crtc_vblank_start;
@@ -170,15 +169,15 @@ void intel_pipe_update_start(struct intel_crtc *crtc)
 
 /**
  * intel_pipe_update_end() - end update of a set of display registers
- * @crtc: the crtc of which the registers were updated
- * @start_vbl_count: start vblank counter (used for error checking)
+ * @new_crtc_state: the new crtc state
  *
  * Mark the end of an update started with intel_pipe_update_start(). This
  * re-enables interrupts and verifies the update was actually completed
- * before a vblank using the value of @start_vbl_count.
+ * before a vblank.
  */
-void intel_pipe_update_end(struct intel_crtc *crtc)
+void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state)
 {
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
 	enum pipe pipe = crtc->pipe;
 	int scanline_end = intel_get_crtc_scanline(crtc);
 	u32 end_vbl_count = intel_crtc_get_vblank_counter(crtc);
@@ -191,14 +190,14 @@ void intel_pipe_update_end(struct intel_crtc *crtc)
 	 * Would be slightly nice to just grab the vblank count and arm the
 	 * event outside of the critical section - the spinlock might spin for a
 	 * while ... */
-	if (crtc->base.state->event) {
+	if (new_crtc_state->base.event) {
 		WARN_ON(drm_crtc_vblank_get(&crtc->base) != 0);
 
 		spin_lock(&crtc->base.dev->event_lock);
-		drm_crtc_arm_vblank_event(&crtc->base, crtc->base.state->event);
+		drm_crtc_arm_vblank_event(&crtc->base, new_crtc_state->base.event);
 		spin_unlock(&crtc->base.dev->event_lock);
 
-		crtc->base.state->event = NULL;
+		new_crtc_state->base.event = NULL;
 	}
 
 	local_irq_enable();
-- 
2.13.0