From 31cd63ff524f07f1240cdaafbdde8cf8ddb37abe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= <jose.souza@intel.com>
Date: Mon, 26 Jul 2021 11:15:59 -0700
Subject: drm/i915/display: Disable audio, DRRS and PSR before planes
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Git-commit: 84030adb9e27d202a66022488bf0349a8bd45213
Patch-mainline: v5.15-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
HDMI and DisplayPort sequences states that audio and PSR should be
disabled before planes are disabled.
Not following it did not caused any problems up to Alderlake-P but
for this platform it causes underruns during the PSR2 disable
sequence.
Specification don't mention that DRRS should be disabled before planes
but it looks safer to switch back to the default refresh rate before
following with the rest of the pipe disable sequence.
BSpec: 49191
BSpec: 49190
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210726181559.80855-1-jose.souza@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 30 ++++++++++++-------
drivers/gpu/drm/i915/display/intel_display.c | 24 +++++++++++++++
.../drm/i915/display/intel_display_types.h | 4 +++
drivers/gpu/drm/i915/display/intel_dp_mst.c | 14 +++++++--
4 files changed, 59 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 6aecf015d270..cc5ea5689dd2 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3208,12 +3208,6 @@ static void intel_disable_ddi_dp(struct intel_atomic_state *state,
intel_dp->link_trained = false;
- if (old_crtc_state->has_audio)
- intel_audio_codec_disable(encoder,
- old_crtc_state, old_conn_state);
-
- intel_edp_drrs_disable(intel_dp, old_crtc_state);
- intel_psr_disable(intel_dp, old_crtc_state);
intel_edp_backlight_off(old_conn_state);
/* Disable the decompression in DP Sink */
intel_dp_sink_set_decompression_state(intel_dp, old_crtc_state,
@@ -3231,10 +3225,6 @@ static void intel_disable_ddi_hdmi(struct intel_atomic_state *state,
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
struct drm_connector *connector = old_conn_state->connector;
- if (old_crtc_state->has_audio)
- intel_audio_codec_disable(encoder,
- old_crtc_state, old_conn_state);
-
if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
false, false))
drm_dbg_kms(&i915->drm,
@@ -3242,6 +3232,25 @@ static void intel_disable_ddi_hdmi(struct intel_atomic_state *state,
connector->base.id, connector->name);
}
+static void intel_pre_disable_ddi(struct intel_atomic_state *state,
+ struct intel_encoder *encoder,
+ const struct intel_crtc_state *old_crtc_state,
+ const struct drm_connector_state *old_conn_state)
+{
+ struct intel_dp *intel_dp;
+
+ if (old_crtc_state->has_audio)
+ intel_audio_codec_disable(encoder, old_crtc_state,
+ old_conn_state);
+
+ if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_HDMI))
+ return;
+
+ intel_dp = enc_to_intel_dp(encoder);
+ intel_edp_drrs_disable(intel_dp, old_crtc_state);
+ intel_psr_disable(intel_dp, old_crtc_state);
+}
+
static void intel_disable_ddi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
@@ -4594,6 +4603,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
encoder->enable = intel_enable_ddi;
encoder->pre_pll_enable = intel_ddi_pre_pll_enable;
encoder->pre_enable = intel_ddi_pre_enable;
+ encoder->pre_disable = intel_pre_disable_ddi;
encoder->disable = intel_disable_ddi;
encoder->post_disable = intel_ddi_post_disable;
encoder->update_pipe = intel_ddi_update_pipe;
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 6625e7ffbbec..4c775a3ed1d0 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3195,6 +3195,28 @@ static void intel_encoders_enable(struct intel_atomic_state *state,
}
}
+static void intel_encoders_pre_disable(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
+{
+ const struct intel_crtc_state *old_crtc_state =
+ intel_atomic_get_old_crtc_state(state, crtc);
+ const struct drm_connector_state *old_conn_state;
+ struct drm_connector *conn;
+ int i;
+
+ for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
+ struct intel_encoder *encoder =
+ to_intel_encoder(old_conn_state->best_encoder);
+
+ if (old_conn_state->crtc != &crtc->base)
+ continue;
+
+ if (encoder->pre_disable)
+ encoder->pre_disable(state, encoder, old_crtc_state,
+ old_conn_state);
+ }
+}
+
static void intel_encoders_disable(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
@@ -10341,6 +10363,8 @@ static void intel_old_crtc_state_disables(struct intel_atomic_state *state,
drm_WARN_ON(&dev_priv->drm, old_crtc_state->bigjoiner_slave);
+ intel_encoders_pre_disable(state, crtc);
+
intel_crtc_disable_planes(state, crtc);
/*
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 19d8d3eefbc2..34ec83fc7167 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -196,6 +196,10 @@ struct intel_encoder {
void (*update_complete)(struct intel_atomic_state *,
struct intel_encoder *,
struct intel_crtc *);
+ void (*pre_disable)(struct intel_atomic_state *,
+ struct intel_encoder *,
+ const struct intel_crtc_state *,
+ const struct drm_connector_state *);
void (*disable)(struct intel_atomic_state *,
struct intel_encoder *,
const struct intel_crtc_state *,
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index e2eb46337369..8d13d7b26a25 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -348,6 +348,16 @@ static void wait_for_act_sent(struct intel_encoder *encoder,
drm_dp_check_act_status(&intel_dp->mst_mgr);
}
+static void intel_mst_pre_disable_dp(struct intel_atomic_state *state,
+ struct intel_encoder *encoder,
+ const struct intel_crtc_state *old_crtc_state,
+ const struct drm_connector_state *old_conn_state)
+{
+ if (old_crtc_state->has_audio)
+ intel_audio_codec_disable(encoder, old_crtc_state,
+ old_conn_state);
+}
+
static void intel_mst_disable_dp(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
@@ -372,9 +382,6 @@ static void intel_mst_disable_dp(struct intel_atomic_state *state,
if (ret) {
drm_dbg_kms(&i915->drm, "failed to update payload %d\n", ret);
}
- if (old_crtc_state->has_audio)
- intel_audio_codec_disable(encoder,
- old_crtc_state, old_conn_state);
}
static void intel_mst_post_disable_dp(struct intel_atomic_state *state,
@@ -903,6 +910,7 @@ intel_dp_create_fake_mst_encoder(struct intel_digital_port *dig_port, enum pipe
intel_encoder->compute_config = intel_dp_mst_compute_config;
intel_encoder->compute_config_late = intel_dp_mst_compute_config_late;
+ intel_encoder->pre_disable = intel_mst_pre_disable_dp;
intel_encoder->disable = intel_mst_disable_dp;
intel_encoder->post_disable = intel_mst_post_disable_dp;
intel_encoder->update_pipe = intel_ddi_update_pipe;
--
2.38.1