diff mbox series

[v3,06/13] drm/i915/audio: Hardware ELD readout

Message ID 20230124144628.4649-7-ville.syrjala@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series drm/i915: ELD precompute and readout | expand

Commit Message

Ville Syrjälä Jan. 24, 2023, 2:46 p.m. UTC 
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Read out the ELD from the hardware buffer, or from our stashed
copy for the audio component, so that we can hook up the state
checker to validate it.

v2: Deal with the platforms using acomp

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/g4x_dp.c      |  2 +
 drivers/gpu/drm/i915/display/g4x_hdmi.c    |  2 +
 drivers/gpu/drm/i915/display/intel_audio.c | 56 ++++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_audio.h |  2 +
 drivers/gpu/drm/i915/display/intel_ddi.c   |  2 +
 5 files changed, 64 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/g4x_dp.c b/drivers/gpu/drm/i915/display/g4x_dp.c
index 24ef36ec2d3d..fa754038d669 100644
--- a/drivers/gpu/drm/i915/display/g4x_dp.c
+++ b/drivers/gpu/drm/i915/display/g4x_dp.c
@@ -398,6 +398,8 @@  static void intel_dp_get_config(struct intel_encoder *encoder,
 
 	if (intel_dp_is_edp(intel_dp))
 		intel_edp_fixup_vbt_bpp(encoder, pipe_config->pipe_bpp);
+
+	intel_audio_codec_get_config(encoder, pipe_config);
 }
 
 static void
diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.c b/drivers/gpu/drm/i915/display/g4x_hdmi.c
index c3580d96765c..64c3b3990702 100644
--- a/drivers/gpu/drm/i915/display/g4x_hdmi.c
+++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c
@@ -155,6 +155,8 @@  static void intel_hdmi_get_config(struct intel_encoder *encoder,
 	intel_read_infoframe(encoder, pipe_config,
 			     HDMI_INFOFRAME_TYPE_VENDOR,
 			     &pipe_config->infoframes.hdmi);
+
+	intel_audio_codec_get_config(encoder, pipe_config);
 }
 
 static void g4x_hdmi_enable_port(struct intel_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index 5123bab17063..f7b460a9c76e 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -71,6 +71,8 @@  struct intel_audio_funcs {
 	void (*audio_codec_disable)(struct intel_encoder *encoder,
 				    const struct intel_crtc_state *old_crtc_state,
 				    const struct drm_connector_state *old_conn_state);
+	void (*audio_codec_get_config)(struct intel_encoder *encoder,
+				       struct intel_crtc_state *crtc_state);
 };
 
 /* DP N/M table */
@@ -314,6 +316,27 @@  static int g4x_eld_buffer_size(struct drm_i915_private *i915)
 	return REG_FIELD_GET(G4X_ELD_BUFFER_SIZE_MASK, tmp);
 }
 
+static void g4x_audio_codec_get_config(struct intel_encoder *encoder,
+				       struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	u32 *eld = (u32 *)crtc_state->eld;
+	int eld_buffer_size, len, i;
+	u32 tmp;
+
+	tmp = intel_de_read(i915, G4X_AUD_CNTL_ST);
+	if ((tmp & G4X_ELD_VALID) == 0)
+		return;
+
+	intel_de_rmw(i915, G4X_AUD_CNTL_ST, G4X_ELD_ADDRESS_MASK, 0);
+
+	eld_buffer_size = g4x_eld_buffer_size(i915);
+	len = min_t(int, sizeof(crtc_state->eld) / 4, eld_buffer_size);
+
+	for (i = 0; i < len; i++)
+		eld[i] = intel_de_read(i915, G4X_HDMIW_HDMIEDID);
+}
+
 static void g4x_audio_codec_disable(struct intel_encoder *encoder,
 				    const struct intel_crtc_state *old_crtc_state,
 				    const struct drm_connector_state *old_conn_state)
@@ -886,19 +909,52 @@  void intel_audio_codec_disable(struct intel_encoder *encoder,
 	intel_lpe_audio_notify(i915, pipe, port, NULL, 0, false);
 }
 
+static void intel_acomp_get_config(struct intel_encoder *encoder,
+				   struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct intel_audio_state *audio_state;
+	enum pipe pipe = crtc->pipe;
+
+	mutex_lock(&i915->display.audio.mutex);
+
+	audio_state = &i915->display.audio.state[pipe];
+
+	if (audio_state->encoder)
+		memcpy(crtc_state->eld, audio_state->eld, sizeof(audio_state->eld));
+
+	mutex_unlock(&i915->display.audio.mutex);
+}
+
+void intel_audio_codec_get_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
+	if (!crtc_state->has_audio)
+		return;
+
+	if (i915->display.funcs.audio)
+		i915->display.funcs.audio->audio_codec_get_config(encoder, crtc_state);
+}
+
 static const struct intel_audio_funcs g4x_audio_funcs = {
 	.audio_codec_enable = g4x_audio_codec_enable,
 	.audio_codec_disable = g4x_audio_codec_disable,
+	.audio_codec_get_config = g4x_audio_codec_get_config,
 };
 
 static const struct intel_audio_funcs ilk_audio_funcs = {
 	.audio_codec_enable = ilk_audio_codec_enable,
 	.audio_codec_disable = ilk_audio_codec_disable,
+	.audio_codec_get_config = intel_acomp_get_config,
 };
 
 static const struct intel_audio_funcs hsw_audio_funcs = {
 	.audio_codec_enable = hsw_audio_codec_enable,
 	.audio_codec_disable = hsw_audio_codec_disable,
+	.audio_codec_get_config = intel_acomp_get_config,
 };
 
 /**
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
index 521c56338834..07d034a981e9 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.h
+++ b/drivers/gpu/drm/i915/display/intel_audio.h
@@ -23,6 +23,8 @@  void intel_audio_codec_enable(struct intel_encoder *encoder,
 void intel_audio_codec_disable(struct intel_encoder *encoder,
 			       const struct intel_crtc_state *old_crtc_state,
 			       const struct drm_connector_state *old_conn_state);
+void intel_audio_codec_get_config(struct intel_encoder *encoder,
+				  struct intel_crtc_state *crtc_state);
 void intel_audio_cdclk_change_pre(struct drm_i915_private *dev_priv);
 void intel_audio_cdclk_change_post(struct drm_i915_private *dev_priv);
 void intel_audio_init(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 0034a43f56e5..254559abedfb 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3496,6 +3496,8 @@  static void intel_ddi_get_config(struct intel_encoder *encoder,
 	intel_read_dp_sdp(encoder, pipe_config, DP_SDP_VSC);
 
 	intel_psr_get_config(encoder, pipe_config);
+
+	intel_audio_codec_get_config(encoder, pipe_config);
 }
 
 void intel_ddi_get_clock(struct intel_encoder *encoder,