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| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-12-13 13:19:39 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-01-03 09:31:10 -0800 |
| commit | 175bd4204e069f8bd855ca3dcf70a78db4410936 (patch) | |
| tree | 4f172f5f12853ff22d86d66bb3fe3c2ec3405f81 /drivers/gpu/drm/i915/intel_sprite.c | |
| parent | b840d907fcf6d5d5ef91af4518b3dab3a5da0f75 (diff) | |
| download | linux-175bd4204e069f8bd855ca3dcf70a78db4410936.tar.gz linux-175bd4204e069f8bd855ca3dcf70a78db4410936.tar.bz2 linux-175bd4204e069f8bd855ca3dcf70a78db4410936.zip | |
drm/i915: track sprite coverage and disable primary plane if possible
To save power when the sprite is full screen, we can disable the primary
plane on the same pipe. Track the sprite status and enable/disable the
primary opportunistically.
v2: remove primary plane enable/disable hooks; they're identical
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sprite.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sprite.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c index c77717db635b..6994e06f8975 100644 --- a/drivers/gpu/drm/i915/intel_sprite.c +++ b/drivers/gpu/drm/i915/intel_sprite.c @@ -256,6 +256,28 @@ snb_disable_plane(struct drm_plane *plane) POSTING_READ(DVSSURF(pipe)); } +static void +intel_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); + + I915_WRITE(reg, I915_READ(reg) | DISPLAY_PLANE_ENABLE); +} + +static void +intel_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); + + I915_WRITE(reg, I915_READ(reg) & ~DISPLAY_PLANE_ENABLE); +} + static int intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, struct drm_framebuffer *fb, int crtc_x, int crtc_y, @@ -342,9 +364,23 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, intel_plane->obj = obj; + /* + * Be sure to re-enable the primary before the sprite is no longer + * covering it fully. + */ + if (!disable_primary && intel_plane->primary_disabled) { + intel_enable_primary(crtc); + intel_plane->primary_disabled = false; + } + intel_plane->update_plane(plane, fb, obj, crtc_x, crtc_y, crtc_w, crtc_h, x, y, src_w, src_h); + if (disable_primary) { + intel_disable_primary(crtc); + intel_plane->primary_disabled = true; + } + /* Unpin old obj after new one is active to avoid ugliness */ if (old_obj) { /* @@ -374,6 +410,11 @@ intel_disable_plane(struct drm_plane *plane) struct intel_plane *intel_plane = to_intel_plane(plane); int ret = 0; + if (intel_plane->primary_disabled) { + intel_enable_primary(plane->crtc); + intel_plane->primary_disabled = false; + } + intel_plane->disable_plane(plane); if (!intel_plane->obj) |