[Intel-gfx] [PATCH v5 4/4] drm/i915: start adding dp mst audio
Jim Bride
jim.bride at linux.intel.com
Tue Sep 6 23:21:18 UTC 2016
On Wed, Aug 31, 2016 at 05:20:26PM -0700, Dhinakaran Pandiyan wrote:
> 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 becaus of atomic changes.
>
> Signed-off-by: Libin Yang <libin.yang at linux.intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
Reviewed-by: Jim Bride <jim.bride at linux.intel.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 d89359a..4c24843 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2876,6 +2876,20 @@ 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)
> {
> @@ -2918,7 +2932,10 @@ 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 851ebb4..ee21126 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -2186,6 +2186,19 @@ 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)
> {
> @@ -2251,11 +2264,8 @@ 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 21ed387..ed3ebcd 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,
> @@ -203,6 +212,12 @@ 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,
> @@ -225,6 +240,9 @@ 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 6c62b79..715623c 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1156,6 +1156,8 @@ 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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