On 11/19/2015 07:07 PM, Ander Conselvan De Oliveira wrote:
(Cc'ing Paulo for the audio power domain question)
On Wed, 2015-11-11 at 13:33 +0800, libin.yang@xxxxxxxxxxxxxxx wrote:
From: Libin Yang <libin.yang@xxxxxxxxxxxxxxx>
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.
Signed-off-by: Libin Yang <libin.yang@xxxxxxxxxxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 14 ++++++++++++++
drivers/gpu/drm/i915/intel_audio.c | 9 ++++++---
drivers/gpu/drm/i915/intel_dp_mst.c | 25 +++++++++++++++++++++++++
3 files changed, 45 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 5659d4c..38c7a5d 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2873,6 +2873,18 @@ static void intel_dp_info(struct seq_file *m,
intel_panel_info(m, &intel_connector->panel);
}
+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;
+
+ seq_printf(m, "\taudio support: %s\n",
drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, intel_connector->port) ? "yes" :
"no");
Too much going on in just one line. You can replace the ternary operator with
yesno(). You could also add a has_audio bool:
bool has_audio = drm_dp_mst_port_has_audio(...);
seq_printf(..., yesno(has_audio));
Get it. Thanks.
+}
+
static void intel_hdmi_info(struct seq_file *m,
struct intel_connector *intel_connector)
{
@@ -2916,6 +2928,8 @@ static void intel_connector_info(struct seq_file *m,
intel_hdmi_info(m, intel_connector);
else if (intel_encoder->type == INTEL_OUTPUT_LVDS)
intel_lvds_info(m, intel_connector);
+ else if (intel_encoder->type == INTEL_OUTPUT_DP_MST)
+ intel_dp_mst_info(m, intel_connector);
}
seq_printf(m, "\tmodes:\n");
diff --git a/drivers/gpu/drm/i915/intel_audio.c
b/drivers/gpu/drm/i915/intel_audio.c
index 63d4706..07b2aa6 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -262,7 +262,8 @@ static void hsw_audio_codec_disable(struct intel_encoder
*encoder)
tmp |= AUD_CONFIG_N_PROG_ENABLE;
tmp &= ~AUD_CONFIG_UPPER_N_MASK;
tmp &= ~AUD_CONFIG_LOWER_N_MASK;
- if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT))
+ if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DP_MST))
The second line should be aligned with '('.
OK, I see.
tmp |= AUD_CONFIG_N_VALUE_INDEX;
I915_WRITE(HSW_AUD_CFG(pipe), tmp);
@@ -478,7 +479,8 @@ static void ilk_audio_codec_enable(struct drm_connector
*connector,
tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK;
- if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT))
+ if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DP_MST))
Same here.
tmp |= AUD_CONFIG_N_VALUE_INDEX;
else
tmp |= audio_config_hdmi_pixel_clock(adjusted_mode);
@@ -516,7 +518,8 @@ void intel_audio_codec_enable(struct intel_encoder
*intel_encoder)
/* ELD Conn_Type */
connector->eld[5] &= ~(3 << 2);
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_DP_MST))
connector->eld[5] |= (1 << 2);
And here.
connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c
b/drivers/gpu/drm/i915/intel_dp_mst.c
index 0639275..4ded0fb 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -78,6 +78,8 @@ static bool intel_dp_mst_compute_config(struct intel_encoder
*encoder,
return false;
}
+ if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, found->port))
+ pipe_config->has_audio = true;
mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
pipe_config->pbn = mst_pbn;
@@ -102,6 +104,11 @@ static void intel_mst_disable_dp(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 drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = encoder->base.crtc;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
int ret;
DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
@@ -112,6 +119,10 @@ static void intel_mst_disable_dp(struct intel_encoder
*encoder)
if (ret) {
DRM_ERROR("failed to update payload %d\n", ret);
}
+ if (intel_crtc->config->has_audio) {
+ intel_audio_codec_disable(encoder);
+ intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO);
+ }
It seems the power domain is only need for DDI platforms. Perhaps it would make
sense to move that into hsw_audio_codec_{en,dis}able. Paulo?
}
static void intel_mst_post_disable_dp(struct intel_encoder *encoder)
@@ -214,6 +225,7 @@ static void intel_mst_enable_dp(struct intel_encoder
*encoder)
struct intel_dp *intel_dp = &intel_dig_port->dp;
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
enum port port = intel_dig_port->port;
int ret;
@@ -226,6 +238,13 @@ 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 (crtc->config->has_audio) {
+ DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
+ pipe_name(crtc->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,
@@ -251,6 +270,12 @@ static void intel_dp_mst_enc_get_config(struct
intel_encoder *encoder,
pipe_config->has_dp_encoder = true;
+ 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(crtc->pipe))
+ pipe_config->has_audio = true;
+ }
+
This code is DDI specific. That shouldn't be a problem since we only support DP
MST on DDI platforms, but we shouldn't duplicate that logic here. So I think
this should be added to a function that can be called both from here and
intel_ddi.c.
OK, I will try to add a helper function. Which file do you suggest
adding the function it?
Best Regards,
Libin
Ander
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