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drm/i915: Perform primary enable/disable atomically with sprite updates 

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@virtuousgeek.org>
Reviewed-by: Sourab Gupta <sourabgupta@gmail.com>
Reviewed-by: Akash Goel <akash.goels@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-04-29 13:35:47 +03:00 committed by Daniel Vetter
parent 8d7849db3e
commit 5b633d6b8e
1 changed files with 55 additions and 39 deletions
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94
drivers/gpu/drm/i915/intel_sprite.c
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@ -120,6 +120,17 @@ static void intel_pipe_update_end(struct intel_crtc *crtc, u32 start_vbl_count)
pipe_name(pipe), start_vbl_count, end_vbl_count);
}
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,
@ -219,6 +230,8 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
intel_update_primary_plane(intel_crtc);
I915_WRITE(SPSTRIDE(pipe, plane), fb->pitches[0]);
I915_WRITE(SPPOS(pipe, plane), (crtc_y << 16) | crtc_x);
@ -231,7 +244,8 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
I915_WRITE(SPCNTR(pipe, plane), sprctl);
I915_WRITE(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);
if (atomic_update)
intel_pipe_update_end(intel_crtc, start_vbl_count);
@ -251,11 +265,14 @@ vlv_disable_plane(struct drm_plane *dplane, struct drm_crtc *crtc)
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
intel_update_primary_plane(intel_crtc);
I915_WRITE(SPCNTR(pipe, plane), I915_READ(SPCNTR(pipe, plane)) &
~SP_ENABLE);
/* Activate double buffered register update */
I915_WRITE(SPSURF(pipe, plane), 0);
POSTING_READ(SPSURF(pipe, plane));
intel_flush_primary_plane(dev_priv, intel_crtc->plane);
if (atomic_update)
intel_pipe_update_end(intel_crtc, start_vbl_count);
@ -403,6 +420,8 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
intel_update_primary_plane(intel_crtc);
I915_WRITE(SPRSTRIDE(pipe), fb->pitches[0]);
I915_WRITE(SPRPOS(pipe), (crtc_y << 16) | crtc_x);
@ -421,7 +440,8 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
I915_WRITE(SPRCTL(pipe), sprctl);
I915_WRITE(SPRSURF(pipe),
i915_gem_obj_ggtt_offset(obj) + sprsurf_offset);
POSTING_READ(SPRSURF(pipe));
intel_flush_primary_plane(dev_priv, intel_crtc->plane);
if (atomic_update)
intel_pipe_update_end(intel_crtc, start_vbl_count);
@ -440,13 +460,16 @@ ivb_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
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_WRITE(SPRSURF(pipe), 0);
POSTING_READ(SPRSURF(pipe));
intel_flush_primary_plane(dev_priv, intel_crtc->plane);
if (atomic_update)
intel_pipe_update_end(intel_crtc, start_vbl_count);
@ -598,6 +621,8 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
intel_update_primary_plane(intel_crtc);
I915_WRITE(DVSSTRIDE(pipe), fb->pitches[0]);
I915_WRITE(DVSPOS(pipe), (crtc_y << 16) | crtc_x);
@ -611,7 +636,8 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
I915_WRITE(DVSCNTR(pipe), dvscntr);
I915_WRITE(DVSSURF(pipe),
i915_gem_obj_ggtt_offset(obj) + dvssurf_offset);
POSTING_READ(DVSSURF(pipe));
intel_flush_primary_plane(dev_priv, intel_crtc->plane);
if (atomic_update)
intel_pipe_update_end(intel_crtc, start_vbl_count);
@ -630,12 +656,15 @@ ilk_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc)
atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
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_WRITE(DVSSURF(pipe), 0);
POSTING_READ(DVSSURF(pipe));
intel_flush_primary_plane(dev_priv, intel_crtc->plane);
if (atomic_update)
intel_pipe_update_end(intel_crtc, start_vbl_count);
@ -650,20 +679,10 @@ 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
@ -682,17 +701,11 @@ 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)
@ -706,9 +719,6 @@ 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
@ -802,7 +812,7 @@ 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;
@ -973,8 +983,8 @@ 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);
@ -1001,12 +1011,12 @@ 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,
@ -1015,8 +1025,8 @@ 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 */
@ -1054,8 +1064,14 @@ 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) {