[Intel-gfx] [PATCH V4 2/2] drm/i915: start adding dp mst audio
Libin Yang
libin.yang at linux.intel.com
Tue Dec 8 00:01:20 PST 2015
Hi all,
Any comments on the patches?
Best Regards,
Libin
On 12/02/2015 02:09 PM, libin.yang at linux.intel.com wrote:
> From: Libin Yang <libin.yang at linux.intel.com>
>
> 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.
>
> Reviewed-by: Ander Conselvan de Oliveira <conselvan2 at gmail.com>
> Signed-off-by: Libin Yang <libin.yang at linux.intel.com>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 16 ++++++++++++++++
> drivers/gpu/drm/i915/intel_audio.c | 9 ++++++---
> drivers/gpu/drm/i915/intel_ddi.c | 20 +++++++++++++++-----
> drivers/gpu/drm/i915/intel_dp_mst.c | 22 ++++++++++++++++++++++
> drivers/gpu/drm/i915/intel_drv.h | 2 ++
> 5 files changed, 61 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index bfd57fb..8387638 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2850,6 +2850,20 @@ 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)
> {
> @@ -2893,6 +2907,8 @@ 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 9aa83e7..5ad2e66 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))
> tmp |= AUD_CONFIG_N_VALUE_INDEX;
> I915_WRITE(HSW_AUD_CFG(pipe), tmp);
>
> @@ -474,7 +475,8 @@ 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))
> tmp |= AUD_CONFIG_N_VALUE_INDEX;
> else
> tmp |= audio_config_hdmi_pixel_clock(adjusted_mode);
> @@ -512,7 +514,8 @@ 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);
>
> connector->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index 76ce7c2..bc7fffb 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -3108,6 +3108,19 @@ 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)
> {
> @@ -3168,11 +3181,8 @@ 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 8c4e7df..8b608c2 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);
> + }
> }
>
> static void intel_mst_post_disable_dp(struct intel_encoder *encoder)
> @@ -208,6 +219,7 @@ 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;
>
> @@ -220,6 +232,13 @@ 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,
> @@ -245,6 +264,9 @@ static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
>
> pipe_config->has_dp_encoder = true;
>
> + 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 1ffd8d5..0d2c59f 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1011,6 +1011,8 @@ 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 *
>
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