From ef8f9bea1368b89d0d6d1819025586ae0bea0612 Mon Sep 17 00:00:00 2001 From: Libin Yang Date: Wed, 2 Dec 2015 14:09:43 +0800 Subject: dp/mst: add SDP stream support This adds code to initialise the SDP streams for a sink in the simplest ordering. I've no idea how you'd want to control the ordering at this level, so don't bother until someone comes up with a use case. Reviewed-by: Ander Conselvan de Oliveira Signed-off-by: Libin Yang Signed-off-by: Dave Airlie Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1449036584-105393-1-git-send-email-libin.yang@linux.intel.com --- include/drm/drm_dp_mst_helper.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/drm') diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index 5340099741ae..74b5888bbc73 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -94,6 +94,7 @@ struct drm_dp_mst_port { struct drm_dp_mst_topology_mgr *mgr; struct edid *cached_edid; /* for DP logical ports - make tiling work */ + bool has_audio; }; /** @@ -215,13 +216,13 @@ struct drm_dp_sideband_msg_rx { struct drm_dp_sideband_msg_hdr initial_hdr; }; - +#define DRM_DP_MAX_SDP_STREAMS 16 struct drm_dp_allocate_payload { u8 port_number; u8 number_sdp_streams; u8 vcpi; u16 pbn; - u8 sdp_stream_sink[8]; + u8 sdp_stream_sink[DRM_DP_MAX_SDP_STREAMS]; }; struct drm_dp_allocate_payload_ack_reply { @@ -484,6 +485,8 @@ int drm_dp_mst_hpd_irq(struct drm_dp_mst_topology_mgr *mgr, u8 *esi, bool *handl enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port); +bool drm_dp_mst_port_has_audio(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_port *port); struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port); -- cgit v1.2.3 From cae666ceb8c3f154351f7df29c522f7a7016bdc0 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 12 Nov 2015 15:23:41 +0100 Subject: drm/i915: Add get_eld audio component Implement a new i915_audio_component_ops, get_eld(). It's called by the audio driver to fetch the current audio status and ELD of the given HDMI/DP port. It returns the size of expected ELD bytes if it's valid, zero if no valid ELD is found, or a negative error code. The current state of audio on/off is stored in the given pointer, too. Note that the returned size isn't limited to the given max bytes. If the size is greater than the max bytes, it means that only a part of ELD has been copied back. For achieving this implementation, a new field audio_connector is added to struct intel_digital_port. It points to the connector assigned to the given digital port. It's set/reset at each audio enable/disable call in intel_audio.c, and protected with av_mutex. Reviewed-by: Daniel Vetter Signed-off-by: Takashi Iwai --- drivers/gpu/drm/i915/intel_audio.c | 42 ++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_drv.h | 2 ++ include/drm/i915_component.h | 14 +++++++++++++ 3 files changed, 58 insertions(+) (limited to 'include/drm') diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 9aa83e71b792..eeac9f763110 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -521,6 +521,10 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder) dev_priv->display.audio_codec_enable(connector, intel_encoder, adjusted_mode); + mutex_lock(&dev_priv->av_mutex); + intel_dig_port->audio_connector = connector; + mutex_unlock(&dev_priv->av_mutex); + if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port); } @@ -544,6 +548,10 @@ void intel_audio_codec_disable(struct intel_encoder *intel_encoder) if (dev_priv->display.audio_codec_disable) dev_priv->display.audio_codec_disable(intel_encoder); + mutex_lock(&dev_priv->av_mutex); + intel_dig_port->audio_connector = NULL; + mutex_unlock(&dev_priv->av_mutex); + if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr, (int) port); } @@ -703,6 +711,39 @@ static int i915_audio_component_sync_audio_rate(struct device *dev, return 0; } +static int i915_audio_component_get_eld(struct device *dev, int port, + bool *enabled, + unsigned char *buf, int max_bytes) +{ + struct drm_i915_private *dev_priv = dev_to_i915(dev); + struct drm_device *drm_dev = dev_priv->dev; + struct intel_encoder *intel_encoder; + struct intel_digital_port *intel_dig_port; + const u8 *eld; + int ret = -EINVAL; + + mutex_lock(&dev_priv->av_mutex); + for_each_intel_encoder(drm_dev, intel_encoder) { + if (intel_encoder->type != INTEL_OUTPUT_DISPLAYPORT && + intel_encoder->type != INTEL_OUTPUT_HDMI) + continue; + intel_dig_port = enc_to_dig_port(&intel_encoder->base); + if (port == intel_dig_port->port) { + ret = 0; + *enabled = intel_dig_port->audio_connector != NULL; + if (!*enabled) + break; + eld = intel_dig_port->audio_connector->eld; + ret = drm_eld_size(eld); + memcpy(buf, eld, min(max_bytes, ret)); + break; + } + } + + mutex_unlock(&dev_priv->av_mutex); + return ret; +} + static const struct i915_audio_component_ops i915_audio_component_ops = { .owner = THIS_MODULE, .get_power = i915_audio_component_get_power, @@ -710,6 +751,7 @@ static const struct i915_audio_component_ops i915_audio_component_ops = { .codec_wake_override = i915_audio_component_codec_wake_override, .get_cdclk_freq = i915_audio_component_get_cdclk_freq, .sync_audio_rate = i915_audio_component_sync_audio_rate, + .get_eld = i915_audio_component_get_eld, }; static int i915_audio_component_bind(struct device *i915_dev, diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index ab5c147fa9e9..fe58a5722b16 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -814,6 +814,8 @@ struct intel_digital_port { struct intel_hdmi hdmi; enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool); bool release_cl2_override; + /* for communication with audio component; protected by av_mutex */ + const struct drm_connector *audio_connector; }; struct intel_dp_mst_encoder { diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index fab13851f95a..b46fa0ef3005 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -65,6 +65,20 @@ struct i915_audio_component_ops { * sample rate, it will call this function to set n/cts */ int (*sync_audio_rate)(struct device *, int port, int rate); + /** + * @get_eld: fill the audio state and ELD bytes for the given port + * + * Called from audio driver to get the HDMI/DP audio state of the given + * digital port, and also fetch ELD bytes to the given pointer. + * + * It returns the byte size of the original ELD (not the actually + * copied size), zero for an invalid ELD, or a negative error code. + * + * Note that the returned size may be over @max_bytes. Then it + * implies that only a part of ELD has been copied to the buffer. + */ + int (*get_eld)(struct device *, int port, bool *enabled, + unsigned char *buf, int max_bytes); }; /** -- cgit v1.2.3