xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/i915/ivb: Move WaCxSRDisabledForSpriteScaling w/a to atomic check

Browse Source 
Determine whether we need to apply this workaround at atomic check time
and just set a flag that will be used by the main watermark update
routine.

Moving this workaround into the atomic framework reduces
ilk_update_sprite_wm() to just a standard watermark update, so drop it
completely and just ensure that ilk_update_wm() is called whenever a
sprite plane is updated in a way that would affect watermarks.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Matt Roper
2015-09-24 15:53:12 -07:00
committed by Daniel Vetter
parent 3a05f5e2e7
commit 7809e5ae35
4 changed files with 48 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/gpu/drm/i915/intel_pm.c
View File

@@ -3730,6 +3730,18 @@ static void ilk_update_wm(struct drm_crtc *crtc)
WARN_ON(cstate->base.active != intel_crtc->active);
/*
* IVB workaround: must disable low power watermarks for at least
* one frame before enabling scaling. LP watermarks can be re-enabled
* when scaling is disabled.
*
* WaCxSRDisabledForSpriteScaling:ivb
*/
if (cstate->disable_lp_wm) {
ilk_disable_lp_wm(dev);
intel_wait_for_vblank(dev, intel_crtc->pipe);
}
intel_compute_pipe_wm(cstate, &pipe_wm);
if (!memcmp(&intel_crtc->wm.active, &pipe_wm, sizeof(pipe_wm)))
@@ -3761,28 +3773,6 @@ static void ilk_update_wm(struct drm_crtc *crtc)
ilk_write_wm_values(dev_priv, &results);
}
static void
ilk_update_sprite_wm(struct drm_plane *plane,
struct drm_crtc *crtc,
uint32_t sprite_width, uint32_t sprite_height,
int pixel_size, bool enabled, bool scaled)
{
struct drm_device *dev = plane->dev;
struct intel_plane *intel_plane = to_intel_plane(plane);
/*
* IVB workaround: must disable low power watermarks for at least
* one frame before enabling scaling. LP watermarks can be re-enabled
* when scaling is disabled.
*
* WaCxSRDisabledForSpriteScaling:ivb
*/
if (IS_IVYBRIDGE(dev) && scaled && ilk_disable_lp_wm(dev))
intel_wait_for_vblank(dev, intel_plane->pipe);
ilk_update_wm(crtc);
}
static void skl_pipe_wm_active_state(uint32_t val,
struct skl_pipe_wm *active,
bool is_transwm,
@@ -7108,7 +7098,6 @@ void intel_init_pm(struct drm_device *dev)
(!IS_GEN5(dev) && dev_priv->wm.pri_latency[0] &&
dev_priv->wm.spr_latency[0] && dev_priv->wm.cur_latency[0])) {
dev_priv->display.update_wm = ilk_update_wm;
dev_priv->display.update_sprite_wm = ilk_update_sprite_wm;
} else {
DRM_DEBUG_KMS("Failed to read display plane latency. "
"Disable CxSR\n");