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author | Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> | 2020-06-01 20:30:58 +0300 |
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committer | Manasi Navare <manasi.d.navare@intel.com> | 2020-06-04 11:11:56 -0700 |
commit | 19aefbc778b8b8e87c2d31be9736c634f0ea95a8 (patch) | |
tree | 2d5d29329515bde0864e2575fea7c1e8830c4385 /drivers/gpu/drm/i915/display/intel_bw.c | |
parent | b8226d62e77620d372f6eb8c34b51798f3962414 (diff) | |
download | linux-19aefbc778b8b8e87c2d31be9736c634f0ea95a8.tar.gz linux-19aefbc778b8b8e87c2d31be9736c634f0ea95a8.tar.bz2 linux-19aefbc778b8b8e87c2d31be9736c634f0ea95a8.zip |
drm/i915: Fix wrong CDCLK adjustment changes
Previous patch didn't take into account all pipes
but only those in state, which could cause wrong
CDCLK conclcusions and calculations.
Also there was a severe issue with min_cdclk being
assigned to 0 every compare cycle.
Too bad this was found by me only after merge.
This could be also causing the issues in test, however
not clear - anyway marking this as fixing the
"Adjust CDCLK accordingly to our DBuf bw needs".
v2: - s/pipe/crtc->pipe/
- save a bit of instructions by
skipping inactive pipes, without
getting 0 DBuf slice mask for it.
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Fixes: cd1915460861 ("drm/i915: Adjust CDCLK accordingly to our DBuf bw needs")
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200601173058.5084-1-stanislav.lisovskiy@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bw.c')
-rw-r--r-- | drivers/gpu/drm/i915/display/intel_bw.c | 52 |
1 files changed, 33 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index a79bd7aeb03b..bd060404d249 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -437,6 +437,7 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) struct intel_crtc *crtc; int max_bw = 0; int slice_id; + enum pipe pipe; int i; for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { @@ -447,10 +448,15 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) if (IS_ERR(new_bw_state)) return PTR_ERR(new_bw_state); + old_bw_state = intel_atomic_get_old_bw_state(state); + crtc_bw = &new_bw_state->dbuf_bw[crtc->pipe]; memset(&crtc_bw->used_bw, 0, sizeof(crtc_bw->used_bw)); + if (!crtc_state->hw.active) + continue; + for_each_plane_id_on_crtc(crtc, plane_id) { const struct skl_ddb_entry *plane_alloc = &crtc_state->wm.skl.plane_ddb_y[plane_id]; @@ -478,6 +484,15 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) for_each_dbuf_slice_in_mask(slice_id, dbuf_mask) crtc_bw->used_bw[slice_id] += data_rate; } + } + + if (!old_bw_state) + return 0; + + for_each_pipe(dev_priv, pipe) { + struct intel_dbuf_bw *crtc_bw; + + crtc_bw = &new_bw_state->dbuf_bw[pipe]; for_each_dbuf_slice(slice_id) { /* @@ -490,14 +505,9 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) */ max_bw += crtc_bw->used_bw[slice_id]; } - - new_bw_state->min_cdclk = max_bw / 64; - - old_bw_state = intel_atomic_get_old_bw_state(state); } - if (!old_bw_state) - return 0; + new_bw_state->min_cdclk = max_bw / 64; if (new_bw_state->min_cdclk != old_bw_state->min_cdclk) { int ret = intel_atomic_lock_global_state(&new_bw_state->base); @@ -511,34 +521,38 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) int intel_bw_calc_min_cdclk(struct intel_atomic_state *state) { - int i; + struct drm_i915_private *dev_priv = to_i915(state->base.dev); + struct intel_bw_state *new_bw_state = NULL; + struct intel_bw_state *old_bw_state = NULL; const struct intel_crtc_state *crtc_state; struct intel_crtc *crtc; int min_cdclk = 0; - struct intel_bw_state *new_bw_state = NULL; - struct intel_bw_state *old_bw_state = NULL; + enum pipe pipe; + int i; for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { - struct intel_cdclk_state *cdclk_state; - new_bw_state = intel_atomic_get_bw_state(state); if (IS_ERR(new_bw_state)) return PTR_ERR(new_bw_state); - cdclk_state = intel_atomic_get_cdclk_state(state); - if (IS_ERR(cdclk_state)) - return PTR_ERR(cdclk_state); - - min_cdclk = max(cdclk_state->min_cdclk[crtc->pipe], min_cdclk); - - new_bw_state->min_cdclk = min_cdclk; - old_bw_state = intel_atomic_get_old_bw_state(state); } if (!old_bw_state) return 0; + for_each_pipe(dev_priv, pipe) { + struct intel_cdclk_state *cdclk_state; + + cdclk_state = intel_atomic_get_new_cdclk_state(state); + if (!cdclk_state) + return 0; + + min_cdclk = max(cdclk_state->min_cdclk[pipe], min_cdclk); + } + + new_bw_state->min_cdclk = min_cdclk; + if (new_bw_state->min_cdclk != old_bw_state->min_cdclk) { int ret = intel_atomic_lock_global_state(&new_bw_state->base); |