Add Takashi
Regards,
Libin
> -----Original Message-----
> From: Pandiyan, Dhinakaran
> Sent: Wednesday, August 3, 2016 9:47 AM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: cpaul@xxxxxxxxxx; ville.syrjala@xxxxxxxxxxxxxxx; Yang, Libin
> <libin.yang@xxxxxxxxx>; Libin Yang <libin.yang@xxxxxxxxxxxxxxx>
> Subject: [PATCH 1/3] drm/i915: start adding dp mst audio
>
> From: Libin Yang <libin.yang@xxxxxxxxxxxxxxx>
>
> (This patch is developed by Dave Airlie <airlied@xxxxxxxxxx> 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.
>
> Signed-off-by: Libin Yang <libin.yang@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 19 ++++++++++++++++++-
> drivers/gpu/drm/i915/intel_ddi.c | 20 +++++++++++++++-----
> drivers/gpu/drm/i915/intel_dp_mst.c | 21 +++++++++++++++++++++
> drivers/gpu/drm/i915/intel_drv.h | 2 ++
> 4 files changed, 56 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index 531ca02..56e38b1 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2961,6 +2961,20 @@ 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;
> + 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) { @@ -
> 3003,7 +3017,10 @@ 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 dd1d6fe..cbb4e7a 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -2154,6 +2154,19 @@ void intel_ddi_fdi_disable(struct drm_crtc *crtc)
> I915_WRITE(FDI_RX_CTL(PIPE_A), val);
> }
>
> +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) { @@ -2219,11
> +2232,8 @@ 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 68a005d..84dbb50 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -76,6 +76,8 @@ 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;
> @@ -97,6 +99,10 @@ 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); @@ -107,6
> +113,10 @@ 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);
> + }
> }
>
> static void intel_mst_post_disable_dp(struct intel_encoder *encoder) @@ -
> 207,7 +217,9 @@ 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 = to_i915(dev);
> + struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
> enum port port = intel_dig_port->port;
> + enum pipe pipe = crtc->pipe;
> int ret;
>
> DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); @@ -222,6
> +234,12 @@ 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 (crtc->config->has_audio) {
> + DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
> + pipe_name(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,
> @@ -245,6 +263,9 @@ 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 e74d851..f73de63c 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1123,6 +1123,8 @@ 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);
> void intel_ddi_fdi_disable(struct drm_crtc *crtc);
> +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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