Add necessary glue code to be able to use new HDMI codec framework from the DRM bridge drivers. The drm_bridge implements a limited set of the hdmi_codec_ops interface, with the functions accepting both drm_connector and drm_bridge instead of just a generic void pointer. This framework is integrated with the DRM HDMI Connector framework, but can also be used for DisplayPort connectors. Reviewed-by: Maxime Ripard <mripard@xxxxxxxxxx> Tested-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> --- drivers/gpu/drm/display/Kconfig | 1 + drivers/gpu/drm/display/drm_bridge_connector.c | 98 ++++++++++++++++++++++++-- include/drm/drm_bridge.h | 74 +++++++++++++++++++ 3 files changed, 169 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kconfig index 80c1953cac14a088d764acd45df03debfcb95e7c..2619fa2476eb149e1befc3135131ed5aaeb5bb4c 100644 --- a/drivers/gpu/drm/display/Kconfig +++ b/drivers/gpu/drm/display/Kconfig @@ -15,6 +15,7 @@ if DRM_DISPLAY_HELPER config DRM_BRIDGE_CONNECTOR bool + select DRM_DISPLAY_HDMI_AUDIO_HELPER select DRM_DISPLAY_HDMI_STATE_HELPER help DRM connector implementation terminating DRM bridge chains. diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c index 512ced87ea18c74e182a558a686ddd83de891814..cc955ee008d843d73fedb891e97143a4168fd311 100644 --- a/drivers/gpu/drm/display/drm_bridge_connector.c +++ b/drivers/gpu/drm/display/drm_bridge_connector.c @@ -374,6 +374,75 @@ static const struct drm_connector_hdmi_funcs drm_bridge_connector_hdmi_funcs = { .write_infoframe = drm_bridge_connector_write_infoframe, }; +static int drm_bridge_connector_audio_startup(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + if (!bridge->funcs->hdmi_audio_startup) + return 0; + + return bridge->funcs->hdmi_audio_startup(connector, bridge); +} + +static int drm_bridge_connector_audio_prepare(struct drm_connector *connector, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + return bridge->funcs->hdmi_audio_prepare(connector, bridge, fmt, hparms); +} + +static void drm_bridge_connector_audio_shutdown(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return; + + bridge->funcs->hdmi_audio_shutdown(connector, bridge); +} + +static int drm_bridge_connector_audio_mute_stream(struct drm_connector *connector, + bool enable, int direction) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + if (bridge->funcs->hdmi_audio_mute_stream) + return bridge->funcs->hdmi_audio_mute_stream(connector, bridge, + enable, direction); + else + return -ENOTSUPP; +} + +static const struct drm_connector_hdmi_audio_funcs drm_bridge_connector_hdmi_audio_funcs = { + .startup = drm_bridge_connector_audio_startup, + .prepare = drm_bridge_connector_audio_prepare, + .shutdown = drm_bridge_connector_audio_shutdown, + .mute_stream = drm_bridge_connector_audio_mute_stream, +}; + /* ----------------------------------------------------------------------------- * Bridge Connector Initialisation */ @@ -473,7 +542,9 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, if (connector_type == DRM_MODE_CONNECTOR_Unknown) return ERR_PTR(-EINVAL); - if (bridge_connector->bridge_hdmi) + if (bridge_connector->bridge_hdmi) { + bridge = bridge_connector->bridge_hdmi; + ret = drmm_connector_hdmi_init(drm, connector, bridge_connector->bridge_hdmi->vendor, bridge_connector->bridge_hdmi->product, @@ -482,12 +553,31 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, connector_type, ddc, supported_formats, max_bpc); - else + if (ret) + return ERR_PTR(ret); + + if (bridge->hdmi_audio_max_i2s_playback_channels || + bridge->hdmi_audio_spdif_playback) { + if (!bridge->funcs->hdmi_audio_prepare || + !bridge->funcs->hdmi_audio_shutdown) + return ERR_PTR(-EINVAL); + + ret = drm_connector_hdmi_audio_init(connector, + bridge->hdmi_audio_dev, + &drm_bridge_connector_hdmi_audio_funcs, + bridge->hdmi_audio_max_i2s_playback_channels, + bridge->hdmi_audio_spdif_playback, + bridge->hdmi_audio_dai_port); + if (ret) + return ERR_PTR(ret); + } + } else { ret = drmm_connector_init(drm, connector, &drm_bridge_connector_funcs, connector_type, ddc); - if (ret) - return ERR_PTR(ret); + if (ret) + return ERR_PTR(ret); + } drm_connector_helper_add(connector, &drm_bridge_connector_helper_funcs); diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index e8d735b7f6a480468c88287e2517b387ceec0f22..4b84faf14e368310dd20aa964e8178ec80aa6fa7 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -41,6 +41,8 @@ struct drm_display_info; struct drm_minor; struct drm_panel; struct edid; +struct hdmi_codec_daifmt; +struct hdmi_codec_params; struct i2c_adapter; /** @@ -676,6 +678,57 @@ struct drm_bridge_funcs { enum hdmi_infoframe_type type, const u8 *buffer, size_t len); + /** + * @hdmi_audio_startup: + * + * Called when ASoC starts an audio stream setup. The + * @hdmi_audio_startup() is optional. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*hdmi_audio_startup)(struct drm_connector *connector, + struct drm_bridge *bridge); + + /** + * @prepare: + * Configures HDMI-encoder for audio stream. Can be called multiple + * times for each setup. Mandatory if HDMI audio is enabled in the + * bridge's configuration. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*hdmi_audio_prepare)(struct drm_connector *connector, + struct drm_bridge *bridge, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms); + + /** + * @hdmi_audio_shutdown: + * + * Shut down the audio stream. Mandatory if HDMI audio is enabled in + * the bridge's configuration. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + void (*hdmi_audio_shutdown)(struct drm_connector *connector, + struct drm_bridge *bridge); + + /** + * @hdmi_audio_mute_stream: + * + * Mute/unmute HDMI audio stream. The @hdmi_audio_mute_stream callback + * is optional. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*hdmi_audio_mute_stream)(struct drm_connector *connector, + struct drm_bridge *bridge, + bool enable, int direction); + /** * @debugfs_init: * @@ -859,6 +912,27 @@ struct drm_bridge { * @DRM_BRIDGE_OP_HDMI is set. */ unsigned int max_bpc; + + /** + * @hdmi_audio_dev: device to be used as a parent for the HDMI Codec + */ + struct device *hdmi_audio_dev; + + /** + * @hdmi_audio_max_i2s_playback_channels: maximum number of playback + * I2S channels for the HDMI codec + */ + int hdmi_audio_max_i2s_playback_channels; + + /** + * @hdmi_audio_spdif_playback: set if HDMI codec has S/PDIF playback port + */ + unsigned int hdmi_audio_spdif_playback : 1; + + /** + * @hdmi_audio_dai_port: sound DAI port, -1 if it is not enabled + */ + int hdmi_audio_dai_port; }; static inline struct drm_bridge * -- 2.39.5