[Intel-gfx] [PATCH v2 4/5] drm/i915: Perform primary enable/disable atomically with sprite updates
ville.syrjala at linux.intel.com
ville.syrjala at linux.intel.com
Tue Jan 21 15:13:05 CET 2014
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Move the primary plane enable/disable to occur atomically with the
sprite update that caused the primary plane visibility to change.
FBC and IPS enable/disable is left to happen well before or after
the primary plane change.
v2: Pass intel_crtc instead of drm_crtc (Daniel)
Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/intel_sprite.c | 94 ++++++++++++++++++++++---------------
1 file changed, 55 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 1ffa7ba..8bf3be8 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -110,6 +110,17 @@ static void intel_pipe_update_end(struct intel_crtc *crtc)
preempt_check_resched();
}
+static void intel_update_primary_plane(struct intel_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+ int reg = DSPCNTR(crtc->plane);
+
+ if (crtc->primary_enabled)
+ I915_WRITE(reg, I915_READ(reg) | DISPLAY_PLANE_ENABLE);
+ else
+ I915_WRITE(reg, I915_READ(reg) & ~DISPLAY_PLANE_ENABLE);
+}
+
static void
vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
struct drm_framebuffer *fb,
@@ -207,6 +218,8 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
intel_pipe_update_start(intel_crtc);
+ intel_update_primary_plane(intel_crtc);
+
I915_WRITE(SPSTRIDE(pipe, plane), fb->pitches[0]);
I915_WRITE(SPPOS(pipe, plane), (crtc_y << 16) | crtc_x);
@@ -219,7 +232,8 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
I915_WRITE(SPCNTR(pipe, plane), sprctl);
I915_MODIFY_DISPBASE(SPSURF(pipe, plane), i915_gem_obj_ggtt_offset(obj) +
sprsurf_offset);
- POSTING_READ(SPSURF(pipe, plane));
+
+ intel_flush_primary_plane(dev_priv, intel_crtc->plane);
intel_pipe_update_end(intel_crtc);
}
@@ -236,11 +250,14 @@ vlv_disable_plane(struct drm_plane *dplane, struct drm_crtc *crtc)
intel_pipe_update_start(intel_crtc);
+ intel_update_primary_plane(intel_crtc);
+
I915_WRITE(SPCNTR(pipe, plane), I915_READ(SPCNTR(pipe, plane)) &
~SP_ENABLE);
/* Activate double buffered register update */
I915_MODIFY_DISPBASE(SPSURF(pipe, plane), 0);
- POSTING_READ(SPSURF(pipe, plane));
+
+ intel_flush_primary_plane(dev_priv, intel_crtc->plane);
intel_pipe_update_end(intel_crtc);
@@ -385,6 +402,8 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
intel_pipe_update_start(intel_crtc);
+ intel_update_primary_plane(intel_crtc);
+
I915_WRITE(SPRSTRIDE(pipe), fb->pitches[0]);
I915_WRITE(SPRPOS(pipe), (crtc_y << 16) | crtc_x);
@@ -403,7 +422,8 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
I915_WRITE(SPRCTL(pipe), sprctl);
I915_MODIFY_DISPBASE(SPRSURF(pipe),
i915_gem_obj_ggtt_offset(obj) + sprsurf_offset);
- POSTING_READ(SPRSURF(pipe));
+
+ intel_flush_primary_plane(dev_priv, intel_crtc->plane);
intel_pipe_update_end(intel_crtc);
}
@@ -419,13 +439,16 @@ ivb_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
intel_pipe_update_start(intel_crtc);
+ intel_update_primary_plane(intel_crtc);
+
I915_WRITE(SPRCTL(pipe), I915_READ(SPRCTL(pipe)) & ~SPRITE_ENABLE);
/* Can't leave the scaler enabled... */
if (intel_plane->can_scale)
I915_WRITE(SPRSCALE(pipe), 0);
/* Activate double buffered register update */
I915_MODIFY_DISPBASE(SPRSURF(pipe), 0);
- POSTING_READ(SPRSURF(pipe));
+
+ intel_flush_primary_plane(dev_priv, intel_crtc->plane);
intel_pipe_update_end(intel_crtc);
@@ -574,6 +597,8 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
intel_pipe_update_start(intel_crtc);
+ intel_update_primary_plane(intel_crtc);
+
I915_WRITE(DVSSTRIDE(pipe), fb->pitches[0]);
I915_WRITE(DVSPOS(pipe), (crtc_y << 16) | crtc_x);
@@ -587,7 +612,8 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
I915_WRITE(DVSCNTR(pipe), dvscntr);
I915_MODIFY_DISPBASE(DVSSURF(pipe),
i915_gem_obj_ggtt_offset(obj) + dvssurf_offset);
- POSTING_READ(DVSSURF(pipe));
+
+ intel_flush_primary_plane(dev_priv, intel_crtc->plane);
intel_pipe_update_end(intel_crtc);
}
@@ -603,12 +629,15 @@ ilk_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
intel_pipe_update_start(intel_crtc);
+ intel_update_primary_plane(intel_crtc);
+
I915_WRITE(DVSCNTR(pipe), I915_READ(DVSCNTR(pipe)) & ~DVS_ENABLE);
/* Disable the scaler */
I915_WRITE(DVSSCALE(pipe), 0);
/* Flush double buffered register updates */
I915_MODIFY_DISPBASE(DVSSURF(pipe), 0);
- POSTING_READ(DVSSURF(pipe));
+
+ intel_flush_primary_plane(dev_priv, intel_crtc->plane);
intel_pipe_update_end(intel_crtc);
@@ -622,20 +651,10 @@ ilk_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
}
static void
-intel_enable_primary(struct drm_crtc *crtc)
+intel_post_enable_primary(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int reg = DSPCNTR(intel_crtc->plane);
-
- if (intel_crtc->primary_enabled)
- return;
-
- intel_crtc->primary_enabled = true;
-
- I915_WRITE(reg, I915_READ(reg) | DISPLAY_PLANE_ENABLE);
- intel_flush_primary_plane(dev_priv, intel_crtc->plane);
/*
* FIXME IPS should be fine as long as one plane is
@@ -654,17 +673,11 @@ intel_enable_primary(struct drm_crtc *crtc)
}
static void
-intel_disable_primary(struct drm_crtc *crtc)
+intel_pre_disable_primary(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int reg = DSPCNTR(intel_crtc->plane);
-
- if (!intel_crtc->primary_enabled)
- return;
-
- intel_crtc->primary_enabled = false;
mutex_lock(&dev->struct_mutex);
if (dev_priv->fbc.plane == intel_crtc->plane)
@@ -678,9 +691,6 @@ intel_disable_primary(struct drm_crtc *crtc)
* versa.
*/
hsw_disable_ips(intel_crtc);
-
- I915_WRITE(reg, I915_READ(reg) & ~DISPLAY_PLANE_ENABLE);
- intel_flush_primary_plane(dev_priv, intel_crtc->plane);
}
static int
@@ -774,7 +784,7 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_i915_gem_object *obj = intel_fb->obj;
struct drm_i915_gem_object *old_obj = intel_plane->obj;
int ret;
- bool disable_primary = false;
+ bool primary_enabled;
bool visible;
int hscale, vscale;
int max_scale, min_scale;
@@ -945,8 +955,8 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
* If the sprite is completely covering the primary plane,
* we can disable the primary and save power.
*/
- disable_primary = drm_rect_equals(&dst, &clip) && !colorkey_enabled(intel_plane);
- WARN_ON(disable_primary && !visible && intel_crtc->active);
+ primary_enabled = !drm_rect_equals(&dst, &clip) || colorkey_enabled(intel_plane);
+ WARN_ON(!primary_enabled && !visible && intel_crtc->active);
mutex_lock(&dev->struct_mutex);
@@ -973,12 +983,12 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
intel_plane->obj = obj;
if (intel_crtc->active) {
- /*
- * Be sure to re-enable the primary before the sprite is no longer
- * covering it fully.
- */
- if (!disable_primary)
- intel_enable_primary(crtc);
+ bool primary_was_enabled = intel_crtc->primary_enabled;
+
+ intel_crtc->primary_enabled = primary_enabled;
+
+ if (primary_was_enabled && !primary_enabled)
+ intel_pre_disable_primary(crtc);
if (visible)
intel_plane->update_plane(plane, crtc, fb, obj,
@@ -987,8 +997,8 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
else
intel_plane->disable_plane(plane, crtc);
- if (disable_primary)
- intel_disable_primary(crtc);
+ if (!primary_was_enabled && primary_enabled)
+ intel_post_enable_primary(crtc);
}
/* Unpin old obj after new one is active to avoid ugliness */
@@ -1026,8 +1036,14 @@ intel_disable_plane(struct drm_plane *plane)
intel_crtc = to_intel_crtc(plane->crtc);
if (intel_crtc->active) {
- intel_enable_primary(plane->crtc);
+ bool primary_was_enabled = intel_crtc->primary_enabled;
+
+ intel_crtc->primary_enabled = true;
+
intel_plane->disable_plane(plane, plane->crtc);
+
+ if (!primary_was_enabled && intel_crtc->primary_enabled)
+ intel_post_enable_primary(plane->crtc);
}
if (intel_plane->obj) {
--
1.8.3.2
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