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authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2017-11-15 17:31:57 +0100
committerMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2017-11-17 15:24:07 +0100
commit248c2435cbd75ad098130dda819b2973591d6f6d (patch)
tree5c2aaedcd13633f5f85784c1538816b1ab2b6e0b /drivers/gpu/drm
parent5b9489cb8ee23b41ab5a4cca6652511fa252bad8 (diff)
drm/i915: Calculate g4x intermediate watermarks correctly
The watermarks it should calculate against are the old optimal watermarks. The currently active crtc watermarks are pure fiction, and are invalid in case of a nonblocking modeset, page flip enabling/disabling planes or any other reason. When the crtc is disabled or during a modeset the intermediate watermarks don't need to be programmed separately, and could be directly assigned to the optimal watermarks. CXSR must always be disabled in the intermediate case for modesets, else we get a WARN for vblank wait timeout. Also rename crtc_state to new_crtc_state, to distinguish it from the old state. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171115163157.14372-2-maarten.lankhorst@linux.intel.com Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f904bf73dbd6..3c55e4026331 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -1406,17 +1406,29 @@ static int g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state)
static int g4x_compute_intermediate_wm(struct drm_device *dev,
struct intel_crtc *crtc,
- struct intel_crtc_state *crtc_state)
+ struct intel_crtc_state *new_crtc_state)
{
- struct g4x_wm_state *intermediate = &crtc_state->wm.g4x.intermediate;
- const struct g4x_wm_state *optimal = &crtc_state->wm.g4x.optimal;
- const struct g4x_wm_state *active = &crtc->wm.active.g4x;
+ struct g4x_wm_state *intermediate = &new_crtc_state->wm.g4x.intermediate;
+ const struct g4x_wm_state *optimal = &new_crtc_state->wm.g4x.optimal;
+ struct intel_atomic_state *intel_state =
+ to_intel_atomic_state(new_crtc_state->base.state);
+ const struct intel_crtc_state *old_crtc_state =
+ intel_atomic_get_old_crtc_state(intel_state, crtc);
+ const struct g4x_wm_state *active = &old_crtc_state->wm.g4x.optimal;
enum plane_id plane_id;
+ if (!new_crtc_state->base.active || drm_atomic_crtc_needs_modeset(&new_crtc_state->base)) {
+ *intermediate = *optimal;
+
+ intermediate->cxsr = false;
+ intermediate->hpll_en = false;
+ goto out;
+ }
+
intermediate->cxsr = optimal->cxsr && active->cxsr &&
- !crtc_state->disable_cxsr;
+ !new_crtc_state->disable_cxsr;
intermediate->hpll_en = optimal->hpll_en && active->hpll_en &&
- !crtc_state->disable_cxsr;
+ !new_crtc_state->disable_cxsr;
intermediate->fbc_en = optimal->fbc_en && active->fbc_en;
for_each_plane_id_on_crtc(crtc, plane_id) {
@@ -1458,12 +1470,13 @@ static int g4x_compute_intermediate_wm(struct drm_device *dev,
WARN_ON(intermediate->hpll.fbc > g4x_fbc_fifo_size(2) &&
intermediate->fbc_en && intermediate->hpll_en);
+out:
/*
* If our intermediate WM are identical to the final WM, then we can
* omit the post-vblank programming; only update if it's different.
*/
if (memcmp(intermediate, optimal, sizeof(*intermediate)) != 0)
- crtc_state->wm.need_postvbl_update = true;
+ new_crtc_state->wm.need_postvbl_update = true;
return 0;
}