[PATCH v7 5/6] drm/i915: start adding dp mst audio
Dhinakaran Pandiyan
dhinakaran.pandiyan at intel.com
Wed Sep 21 18:33:17 UTC 2016
From: Libin Yang <libin.yang at linux.intel.com>
(This patch is developed by Dave Airlie <airlied at redhat.com> originally)
This patch adds support for DP MST audio in i915.
Enable audio codec when DP MST is enabled if has_audio flag is set.
Disable audio codec when DP MST is disabled if has_audio flag is set.
Another separated patches to support DP MST audio will be implemented
in audio driver.
v2:
Rebased.
Signed-off-by: Libin Yang <libin.yang at linux.intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
Reviewed-by: Lyude <cpaul at redhat.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 19 ++++++++++++++++++-
drivers/gpu/drm/i915/intel_ddi.c | 20 +++++++++++++++-----
drivers/gpu/drm/i915/intel_dp_mst.c | 18 ++++++++++++++++++
drivers/gpu/drm/i915/intel_drv.h | 2 ++
4 files changed, 53 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 27b0e34..1384da5 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2865,6 +2865,20 @@ static void intel_dp_info(struct seq_file *m,
&intel_dp->aux);
}
+static void intel_dp_mst_info(struct seq_file *m,
+ struct intel_connector *intel_connector)
+{
+ struct intel_encoder *intel_encoder = intel_connector->encoder;
+ struct intel_dp_mst_encoder *intel_mst =
+ enc_to_mst(&intel_encoder->base);
+ struct intel_digital_port *intel_dig_port = intel_mst->primary;
+ struct intel_dp *intel_dp = &intel_dig_port->dp;
+ bool has_audio = drm_dp_mst_port_has_audio(&intel_dp->mst_mgr,
+ intel_connector->port);
+
+ seq_printf(m, "\taudio support: %s\n", yesno(has_audio));
+}
+
static void intel_hdmi_info(struct seq_file *m,
struct intel_connector *intel_connector)
{
@@ -2907,7 +2921,10 @@ static void intel_connector_info(struct seq_file *m,
switch (connector->connector_type) {
case DRM_MODE_CONNECTOR_DisplayPort:
case DRM_MODE_CONNECTOR_eDP:
- intel_dp_info(m, intel_connector);
+ if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
+ intel_dp_mst_info(m, intel_connector);
+ else
+ intel_dp_info(m, intel_connector);
break;
case DRM_MODE_CONNECTOR_LVDS:
if (intel_encoder->type == INTEL_OUTPUT_LVDS)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index daf3adb..24275e9 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2230,6 +2230,19 @@ void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp)
udelay(600);
}
+bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
+ struct intel_crtc *intel_crtc)
+{
+ u32 temp;
+
+ if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) {
+ temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
+ if (temp & AUDIO_OUTPUT_ENABLE(intel_crtc->pipe))
+ return true;
+ }
+ return false;
+}
+
void intel_ddi_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
@@ -2295,11 +2308,8 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
break;
}
- if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) {
- temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
- if (temp & AUDIO_OUTPUT_ENABLE(intel_crtc->pipe))
- pipe_config->has_audio = true;
- }
+ pipe_config->has_audio =
+ intel_ddi_is_audio_enabled(dev_priv, intel_crtc);
if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.bpp &&
pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 3ffbd69..2fc9f81 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -37,6 +37,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
struct intel_digital_port *intel_dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &intel_dig_port->dp;
+ struct intel_connector *connector =
+ to_intel_connector(conn_state->connector);
struct drm_atomic_state *state;
int bpp;
int lane_count, slots;
@@ -59,6 +61,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
state = pipe_config->base.state;
+ if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, connector->port))
+ pipe_config->has_audio = true;
mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
pipe_config->pbn = mst_pbn;
@@ -84,6 +88,7 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder,
struct intel_dp *intel_dp = &intel_dig_port->dp;
struct intel_connector *connector =
to_intel_connector(old_conn_state->connector);
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
int ret;
DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
@@ -94,6 +99,10 @@ static void intel_mst_disable_dp(struct intel_encoder *encoder,
if (ret) {
DRM_ERROR("failed to update payload %d\n", ret);
}
+ if (old_crtc_state->has_audio) {
+ intel_audio_codec_disable(encoder);
+ intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO);
+ }
}
static void intel_mst_post_disable_dp(struct intel_encoder *encoder,
@@ -206,6 +215,12 @@ static void intel_mst_enable_dp(struct intel_encoder *encoder,
ret = drm_dp_check_act_status(&intel_dp->mst_mgr);
ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr);
+ if (pipe_config->has_audio) {
+ DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
+ pipe_name(intel_mst->pipe));
+ intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO);
+ intel_audio_codec_enable(encoder);
+ }
}
static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder,
@@ -228,6 +243,9 @@ static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
u32 temp, flags = 0;
+ pipe_config->has_audio =
+ intel_ddi_is_audio_enabled(dev_priv, crtc);
+
temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
if (temp & TRANS_DDI_PHSYNC)
flags |= DRM_MODE_FLAG_PHSYNC;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index cf92bc0..8bb5358 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1155,6 +1155,8 @@ bool intel_ddi_pll_select(struct intel_crtc *crtc,
void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
+bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
+ struct intel_crtc *intel_crtc);
void intel_ddi_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config);
struct intel_encoder *
--
2.5.0
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