From ec5a6c8a58fb19914eb128d421bf1a880f2eb666 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= <jose.souza@intel.com>
Date: Wed, 22 Sep 2021 14:52:41 -0700
Subject: drm/i915/display: Match PSR2 selective fetch sequences with
specification
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Git-commit: 73262db68c27ed25452ffd3b57e051e1791de713
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
We were not completely following the selective fetch programming
sequence, here some things we were doing wrong:
- not programming plane selective fetch a PSR2_MAN_TRK_CTL registers
when doing a modeset
- programming PSR2_MAN_TRK_CTL out of vblank
With this changes the last remainig underrun found in Alderlake-P is
fixed.
Bspec: 55229
Tested-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210922215242.66683-2-jose.souza@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_cursor.c | 4 ++-
drivers/gpu/drm/i915/display/intel_display.c | 12 +++----
drivers/gpu/drm/i915/display/intel_psr.c | 33 ++++++++++++++-----
drivers/gpu/drm/i915/display/intel_psr.h | 2 ++
.../drm/i915/display/skl_universal_plane.c | 4 +--
5 files changed, 36 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cursor.c b/drivers/gpu/drm/i915/display/intel_cursor.c
index c7618fef0143..901ad3a4c8c3 100644
--- a/drivers/gpu/drm/i915/display/intel_cursor.c
+++ b/drivers/gpu/drm/i915/display/intel_cursor.c
@@ -536,8 +536,10 @@ static void i9xx_update_cursor(struct intel_plane *plane,
if (DISPLAY_VER(dev_priv) >= 9)
skl_write_cursor_wm(plane, crtc_state);
- if (!intel_crtc_needs_modeset(crtc_state))
+ if (plane_state)
intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, 0);
+ else
+ intel_psr2_disable_plane_sel_fetch(plane, crtc_state);
if (plane->cursor.base != base ||
plane->cursor.size != fbc_ctl ||
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 41317bbf0b61..4e9098405f57 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6819,11 +6819,9 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
}
- if (!mode_changed) {
- ret = intel_psr2_sel_fetch_update(state, crtc);
- if (ret)
- return ret;
- }
+ ret = intel_psr2_sel_fetch_update(state, crtc);
+ if (ret)
+ return ret;
return 0;
}
@@ -9716,10 +9714,10 @@ static void commit_pipe_pre_planes(struct intel_atomic_state *state,
if (new_crtc_state->update_pipe)
intel_pipe_fastset(old_crtc_state, new_crtc_state);
-
- intel_psr2_program_trans_man_trk_ctl(new_crtc_state);
}
+ intel_psr2_program_trans_man_trk_ctl(new_crtc_state);
+
if (dev_priv->display.atomic_update_watermarks)
dev_priv->display.atomic_update_watermarks(state, crtc);
}
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index c1894b056d6c..868e5205dd09 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -561,15 +561,16 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
val |= EDP_PSR2_SU_SDP_SCANLINE;
if (intel_dp->psr.psr2_sel_fetch_enabled) {
+ u32 tmp;
+
/* Wa_1408330847 */
if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
DIS_RAM_BYPASS_PSR2_MAN_TRACK,
DIS_RAM_BYPASS_PSR2_MAN_TRACK);
- intel_de_write(dev_priv,
- PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder),
- PSR2_MAN_TRK_CTL_ENABLE);
+ tmp = intel_de_read(dev_priv, PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder));
+ drm_WARN_ON(&dev_priv->drm, !(tmp & PSR2_MAN_TRK_CTL_ENABLE));
} else if (HAS_PSR2_SEL_FETCH(dev_priv)) {
intel_de_write(dev_priv,
PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder), 0);
@@ -1450,6 +1451,18 @@ static void psr_force_hw_tracking_exit(struct intel_dp *intel_dp)
intel_de_write(dev_priv, CURSURFLIVE(intel_dp->psr.pipe), 0);
}
+void intel_psr2_disable_plane_sel_fetch(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+ enum pipe pipe = plane->pipe;
+
+ if (!crtc_state->enable_psr2_sel_fetch)
+ return;
+
+ intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id), 0);
+}
+
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,
@@ -1464,11 +1477,11 @@ void intel_psr2_program_plane_sel_fetch(struct intel_plane *plane,
if (!crtc_state->enable_psr2_sel_fetch)
return;
- val = plane_state ? plane_state->ctl : 0;
- val &= plane->id == PLANE_CURSOR ? val : PLANE_SEL_FETCH_CTL_ENABLE;
- intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id), val);
- if (!val || plane->id == PLANE_CURSOR)
+ if (plane->id == PLANE_CURSOR) {
+ intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id),
+ plane_state->ctl);
return;
+ }
clip = &plane_state->psr2_sel_fetch_area;
@@ -1487,14 +1500,16 @@ void intel_psr2_program_plane_sel_fetch(struct intel_plane *plane,
val = (drm_rect_height(clip) - 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);
+
+ intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id),
+ PLANE_SEL_FETCH_CTL_ENABLE);
}
void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
- if (!HAS_PSR2_SEL_FETCH(dev_priv) ||
- !crtc_state->enable_psr2_sel_fetch)
+ if (!crtc_state->enable_psr2_sel_fetch)
return;
intel_de_write(dev_priv, PSR2_MAN_TRK_CTL(crtc_state->cpu_transcoder),
diff --git a/drivers/gpu/drm/i915/display/intel_psr.h b/drivers/gpu/drm/i915/display/intel_psr.h
index 641521b101c8..e502964697c6 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.h
+++ b/drivers/gpu/drm/i915/display/intel_psr.h
@@ -51,6 +51,8 @@ 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);
+void intel_psr2_disable_plane_sel_fetch(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state);
void intel_psr_pause(struct intel_dp *intel_dp);
void intel_psr_resume(struct intel_dp *intel_dp);
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index f50282b60de4..91f1be7174e5 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -656,6 +656,7 @@ skl_disable_plane(struct intel_plane *plane,
skl_write_plane_wm(plane, crtc_state);
+ intel_psr2_disable_plane_sel_fetch(plane, crtc_state);
intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), 0);
intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), 0);
@@ -1101,8 +1102,7 @@ skl_program_plane(struct intel_plane *plane,
(plane_state->view.color_plane[1].y << 16) |
plane_state->view.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);
+ intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, color_plane);
/*
* Enable the scaler before the plane so that we don't
--
2.38.1