[PATCH 3/5] drm/i915/display: Program PSR2 selective fetch registers
José Roberto de Souza
jose.souza at intel.com
Tue Sep 15 20:43:00 UTC 2020
Another step towards PSR2 selective fetch, here programming plane
selective fetch registers and MAN_TRK_CTL enabling selective fetch but
for now it is fetching the whole area of the planes.
The damaged area calculation will come as next and final step.
v2:
- removed warn on when no plane is visible in state
- removed calculations using plane damaged area in
intel_psr2_program_plane_sel_fetch()
BSpec: 55229
Cc: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 10 +-
drivers/gpu/drm/i915/display/intel_psr.c | 120 ++++++++++++++++++-
drivers/gpu/drm/i915/display/intel_psr.h | 10 +-
drivers/gpu/drm/i915/display/intel_sprite.c | 3 +
4 files changed, 134 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f862403388f6..9ecec9972772 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -11812,6 +11812,9 @@ static void i9xx_update_cursor(struct intel_plane *plane,
if (INTEL_GEN(dev_priv) >= 9)
skl_write_cursor_wm(plane, crtc_state);
+ if (!needs_modeset(crtc_state))
+ intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, 0);
+
if (plane->cursor.base != base ||
plane->cursor.size != fbc_ctl ||
plane->cursor.cntl != cntl) {
@@ -12823,8 +12826,11 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
}
- if (!mode_changed)
- intel_psr2_sel_fetch_update(state, crtc);
+ if (!mode_changed) {
+ ret = intel_psr2_sel_fetch_update(state, crtc);
+ if (ret)
+ return ret;
+ }
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index e86abbbca9db..15bc299a2b74 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1166,6 +1166,41 @@ static void psr_force_hw_tracking_exit(struct drm_i915_private *dev_priv)
intel_psr_exit(dev_priv);
}
+void intel_psr2_program_plane_sel_fetch(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state,
+ int color_plane)
+{
+ struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+ enum pipe pipe = plane->pipe;
+ u32 val;
+
+ if (!plane_state || !crtc_state->enable_psr2_sel_fetch)
+ return;
+
+ /*
+ * skl_plane_ctl_crtc()/i9xx_cursor_ctl_crtc() return 0 for gen11+, so
+ * plane_state->ctl is the right value
+ */
+ intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id),
+ plane_state->ctl);
+ if (!plane_state->ctl || plane->id == PLANE_CURSOR)
+ return;
+
+ val = plane_state->uapi.dst.y1 << 16 | plane_state->uapi.dst.x1;
+ intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_POS(pipe, plane->id), val);
+
+ val = plane_state->color_plane[color_plane].y << 16;
+ val |= plane_state->color_plane[color_plane].x;
+ intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_OFFSET(pipe, plane->id),
+ val);
+
+ /* Sizes are 0 based */
+ val = ((drm_rect_height(&plane_state->uapi.src) >> 16) - 1) << 16;
+ val |= (drm_rect_width(&plane_state->uapi.src) >> 16) - 1;
+ intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_SIZE(pipe, plane->id), val);
+}
+
void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
@@ -1180,16 +1215,91 @@ void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_st
crtc_state->psr2_man_track_ctl);
}
-void intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
+static void psr2_man_trk_ctl_calc(struct intel_crtc_state *crtc_state,
+ struct drm_rect *clip, bool full_update)
+{
+ u32 val = PSR2_MAN_TRK_CTL_ENABLE;
+
+ if (full_update) {
+ val |= PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
+ goto exit;
+ }
+
+ if (clip->y1 == -1)
+ goto exit;
+
+ val |= PSR2_MAN_TRK_CTL_SF_PARTIAL_FRAME_UPDATE;
+ val |= PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(clip->y1 / 4 + 1);
+ val |= PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(DIV_ROUND_UP(clip->y2, 4) + 1);
+exit:
+ crtc_state->psr2_man_track_ctl = val;
+}
+
+static void clip_area_update(struct drm_rect *overlap_damage_area,
+ struct drm_rect *damage_area)
+{
+ if (overlap_damage_area->y1 == -1) {
+ overlap_damage_area->y1 = damage_area->y1;
+ overlap_damage_area->y2 = damage_area->y2;
+ return;
+ }
+
+ if (damage_area->y1 < overlap_damage_area->y1)
+ overlap_damage_area->y1 = damage_area->y1;
+
+ if (damage_area->y2 > overlap_damage_area->y2)
+ overlap_damage_area->y2 = damage_area->y2;
+}
+
+int intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
{
struct intel_crtc_state *crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
+ struct intel_plane_state *new_plane_state, *old_plane_state;
+ struct drm_rect pipe_clip = { .y1 = -1 };
+ struct intel_plane *plane;
+ bool full_update = false;
+ int i, ret;
if (!crtc_state->enable_psr2_sel_fetch)
- return;
+ return 0;
+
+ ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
+ if (ret)
+ return ret;
- crtc_state->psr2_man_track_ctl = PSR2_MAN_TRK_CTL_ENABLE |
- PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
+ for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
+ new_plane_state, i) {
+ struct drm_rect temp;
+
+ if (new_plane_state->uapi.crtc != crtc_state->uapi.crtc)
+ continue;
+
+ /*
+ * TODO: Not clear how to handle planes with negative position,
+ * also planes are not updated if they have a negative X
+ * position so for now doing a full update in this cases
+ */
+ if (new_plane_state->uapi.dst.y1 < 0 ||
+ new_plane_state->uapi.dst.x1 < 0) {
+ full_update = true;
+ break;
+ }
+
+ if (!new_plane_state->uapi.visible)
+ continue;
+
+ /*
+ * For now doing a selective fetch in the whole plane area,
+ * optimizations will come in the future.
+ */
+ temp.y1 = new_plane_state->uapi.dst.y1 >> 16;
+ temp.y2 = new_plane_state->uapi.dst.y2 >> 16;
+ clip_area_update(&pipe_clip, &temp);
+ }
+
+ psr2_man_trk_ctl_calc(crtc_state, &pipe_clip, full_update);
+ return 0;
}
/**
diff --git a/drivers/gpu/drm/i915/display/intel_psr.h b/drivers/gpu/drm/i915/display/intel_psr.h
index 6a83c8e682e6..3eca9dcec3c0 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.h
+++ b/drivers/gpu/drm/i915/display/intel_psr.h
@@ -15,6 +15,8 @@ struct intel_crtc_state;
struct intel_dp;
struct intel_crtc;
struct intel_atomic_state;
+struct intel_plane_state;
+struct intel_plane;
#define CAN_PSR(dev_priv) (HAS_PSR(dev_priv) && dev_priv->psr.sink_support)
void intel_psr_init_dpcd(struct intel_dp *intel_dp);
@@ -45,8 +47,12 @@ void intel_psr_atomic_check(struct drm_connector *connector,
struct drm_connector_state *old_state,
struct drm_connector_state *new_state);
void intel_psr_set_force_mode_changed(struct intel_dp *intel_dp);
-void intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
- struct intel_crtc *crtc);
+int intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
+ struct intel_crtc *crtc);
void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_state);
+void intel_psr2_program_plane_sel_fetch(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state,
+ int color_plane);
#endif /* __INTEL_PSR_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 63040cb0d4e1..f12425b90607 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -690,6 +690,9 @@ skl_program_plane(struct intel_plane *plane,
intel_de_write_fw(dev_priv, PLANE_AUX_OFFSET(pipe, plane_id),
(plane_state->color_plane[1].y << 16) | plane_state->color_plane[1].x);
+ if (!drm_atomic_crtc_needs_modeset(&crtc_state->uapi))
+ intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, color_plane);
+
/*
* The control register self-arms if the plane was previously
* disabled. Try to make the plane enable atomic by writing
--
2.28.0
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