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drm/i915: Add skl_wm_plane_disable_noatomic()

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Add skl_wm_plane_disable_noatomic() which will clear out all
the ddb and wm state for the plane. And let's do this _before_
we call plane->disable_arm() so that it'll actually clear out
the state in the hardware as well.

Currently this won't do anything new for most of the
intel_plane_disable_noatomic() calls since those are done before
wm readout, and thus everything wm/ddb related in the state
will still be zeroed anyway. The only difference will be for
skl_dbuf_sanitize() is happens after wm readout. But I'll be
reordering thigns so that wm readout happens earlier and at that
point this will guarantee that we still clear out the old
wm/ddb junk from the state.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306163420.3961-8-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2025-03-06 18:34:09 +02:00
parent 1dc6076c67
commit d34b59d5ba
3 changed files with 26 additions and 0 deletions
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2
drivers/gpu/drm/i915/display/intel_display.c
View File

@ -678,6 +678,8 @@ void intel_plane_disable_noatomic(struct intel_crtc *crtc,
intel_set_plane_visible(crtc_state, plane_state, false);
intel_plane_fixup_bitmasks(crtc_state);
skl_wm_plane_disable_noatomic(crtc, plane);
if ((crtc_state->active_planes & ~BIT(PLANE_CURSOR)) == 0 &&
hsw_ips_disable(crtc_state)) {
crtc_state->ips_enabled = false;

22
drivers/gpu/drm/i915/display/skl_watermark.c
View File

@ -3867,6 +3867,28 @@ void skl_wm_crtc_disable_noatomic(struct intel_crtc *crtc)
memset(&crtc_state->wm.skl.ddb, 0, sizeof(crtc_state->wm.skl.ddb));
}
void skl_wm_plane_disable_noatomic(struct intel_crtc *crtc,
struct intel_plane *plane)
{
struct intel_display *display = to_intel_display(crtc);
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
if (DISPLAY_VER(display) < 9)
return;
skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[plane->id], 0, 0);
skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[plane->id], 0, 0);
crtc_state->wm.skl.plane_min_ddb[plane->id] = 0;
crtc_state->wm.skl.plane_interim_ddb[plane->id] = 0;
memset(&crtc_state->wm.skl.raw.planes[plane->id], 0,
sizeof(crtc_state->wm.skl.raw.planes[plane->id]));
memset(&crtc_state->wm.skl.optimal.planes[plane->id], 0,
sizeof(crtc_state->wm.skl.optimal.planes[plane->id]));
}
void intel_wm_state_verify(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{

2
drivers/gpu/drm/i915/display/skl_watermark.h
View File

@ -42,6 +42,8 @@ void intel_wm_state_verify(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void skl_wm_crtc_disable_noatomic(struct intel_crtc *crtc);
void skl_wm_plane_disable_noatomic(struct intel_crtc *crtc,
struct intel_plane *plane);
void skl_watermark_ipc_init(struct drm_i915_private *i915);
void skl_watermark_ipc_update(struct drm_i915_private *i915);