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drm/bridge: split HDMI Audio from DRM_BRIDGE_OP_HDMI

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As pointed out by Laurent, OP bits are supposed to describe operations.
Split DRM_BRIDGE_OP_HDMI_AUDIO from DRM_BRIDGE_OP_HDMI instead of
overloading DRM_BRIDGE_OP_HDMI.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250314-dp-hdmi-audio-v6-1-dbd228fa73d7@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Dmitry Baryshkov 2025-04-07 15:48:23 +03:00
parent 1afba39f93
commit 5d04b41889
5 changed files with 76 additions and 33 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpu/drm/bridge/lontium-lt9611.c
View file

@ -1131,7 +1131,7 @@ static int lt9611_probe(struct i2c_client *client)
lt9611->bridge.of_node = client->dev.of_node;
lt9611->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES |
DRM_BRIDGE_OP_HDMI;
DRM_BRIDGE_OP_HDMI | DRM_BRIDGE_OP_HDMI_AUDIO;
lt9611->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
lt9611->bridge.vendor = "Lontium";
lt9611->bridge.product = "LT9611";

1
drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
View file

@ -1077,6 +1077,7 @@ struct dw_hdmi_qp *dw_hdmi_qp_bind(struct platform_device *pdev,
hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT |
DRM_BRIDGE_OP_EDID |
DRM_BRIDGE_OP_HDMI |
DRM_BRIDGE_OP_HDMI_AUDIO |
DRM_BRIDGE_OP_HPD;
hdmi->bridge.of_node = pdev->dev.of_node;
hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;

51
drivers/gpu/drm/display/drm_bridge_connector.c
View file

@ -98,6 +98,13 @@ struct drm_bridge_connector {
* HDMI connector infrastructure, if any (see &DRM_BRIDGE_OP_HDMI).
*/
struct drm_bridge *bridge_hdmi;
/**
* @bridge_hdmi_audio:
*
* The bridge in the chain that implements necessary support for the
* HDMI Audio infrastructure, if any (see &DRM_BRIDGE_OP_HDMI_AUDIO).
*/
struct drm_bridge *bridge_hdmi_audio;
};
#define to_drm_bridge_connector(x) \
@ -433,7 +440,7 @@ static int drm_bridge_connector_audio_startup(struct drm_connector *connector)
to_drm_bridge_connector(connector);
struct drm_bridge *bridge;
bridge = bridge_connector->bridge_hdmi;
bridge = bridge_connector->bridge_hdmi_audio;
if (!bridge)
return -EINVAL;
@ -451,7 +458,7 @@ static int drm_bridge_connector_audio_prepare(struct drm_connector *connector,
to_drm_bridge_connector(connector);
struct drm_bridge *bridge;
bridge = bridge_connector->bridge_hdmi;
bridge = bridge_connector->bridge_hdmi_audio;
if (!bridge)
return -EINVAL;
@ -464,7 +471,7 @@ static void drm_bridge_connector_audio_shutdown(struct drm_connector *connector)
to_drm_bridge_connector(connector);
struct drm_bridge *bridge;
bridge = bridge_connector->bridge_hdmi;
bridge = bridge_connector->bridge_hdmi_audio;
if (!bridge)
return;
@ -478,7 +485,7 @@ static int drm_bridge_connector_audio_mute_stream(struct drm_connector *connecto
to_drm_bridge_connector(connector);
struct drm_bridge *bridge;
bridge = bridge_connector->bridge_hdmi;
bridge = bridge_connector->bridge_hdmi_audio;
if (!bridge)
return -EINVAL;
@ -576,6 +583,21 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
max_bpc = bridge->max_bpc;
}
if (bridge->ops & DRM_BRIDGE_OP_HDMI_AUDIO) {
if (bridge_connector->bridge_hdmi_audio)
return ERR_PTR(-EBUSY);
if (!bridge->hdmi_audio_max_i2s_playback_channels &&
!bridge->hdmi_audio_spdif_playback)
return ERR_PTR(-EINVAL);
if (!bridge->funcs->hdmi_audio_prepare ||
!bridge->funcs->hdmi_audio_shutdown)
return ERR_PTR(-EINVAL);
bridge_connector->bridge_hdmi_audio = bridge;
}
if (!drm_bridge_get_next_bridge(bridge))
connector_type = bridge->type;
@ -611,12 +633,16 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
max_bpc);
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 (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);
if (bridge_connector->bridge_hdmi_audio) {
bridge = bridge_connector->bridge_hdmi_audio;
ret = drm_connector_hdmi_audio_init(connector,
bridge->hdmi_audio_dev,
@ -627,13 +653,6 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
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);
}
drm_connector_helper_add(connector, &drm_bridge_connector_helper_funcs);

1
drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
View file

@ -515,6 +515,7 @@ int msm_hdmi_bridge_init(struct hdmi *hdmi)
bridge->ops = DRM_BRIDGE_OP_HPD |
DRM_BRIDGE_OP_DETECT |
DRM_BRIDGE_OP_HDMI |
DRM_BRIDGE_OP_HDMI_AUDIO |
DRM_BRIDGE_OP_EDID;
bridge->hdmi_audio_max_i2s_playback_channels = 8;
bridge->hdmi_audio_dev = &hdmi->pdev->dev;

46
include/drm/drm_bridge.h
View file

@ -681,8 +681,10 @@ struct drm_bridge_funcs {
/**
* @hdmi_audio_startup:
*
* Called when ASoC starts an audio stream setup. The
* @hdmi_audio_startup() is optional.
* Called when ASoC starts an audio stream setup.
*
* This callback is optional, it can be implemented by bridges that
* set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
*
* Returns:
* 0 on success, a negative error code otherwise
@ -693,8 +695,10 @@ struct drm_bridge_funcs {
/**
* @hdmi_audio_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.
* times for each setup.
*
* This callback is optional but it must be implemented by bridges that
* set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
*
* Returns:
* 0 on success, a negative error code otherwise
@ -707,8 +711,10 @@ struct drm_bridge_funcs {
/**
* @hdmi_audio_shutdown:
*
* Shut down the audio stream. Mandatory if HDMI audio is enabled in
* the bridge's configuration.
* Shut down the audio stream.
*
* This callback is optional but it must be implemented by bridges that
* set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
*
* Returns:
* 0 on success, a negative error code otherwise
@ -719,8 +725,10 @@ struct drm_bridge_funcs {
/**
* @hdmi_audio_mute_stream:
*
* Mute/unmute HDMI audio stream. The @hdmi_audio_mute_stream callback
* is optional.
* Mute/unmute HDMI audio stream.
*
* This callback is optional, it can be implemented by bridges that
* set the @DRM_BRIDGE_OP_HDMI_AUDIO flag in their &drm_bridge->ops.
*
* Returns:
* 0 on success, a negative error code otherwise
@ -814,6 +822,17 @@ enum drm_bridge_ops {
* drivers.
*/
DRM_BRIDGE_OP_HDMI = BIT(4),
/**
* @DRM_BRIDGE_OP_HDMI_AUDIO: The bridge provides HDMI audio operations.
* Bridges that set this flag must implement the
* &drm_bridge_funcs->hdmi_audio_prepare and
* &drm_bridge_funcs->hdmi_audio_shutdown callbacks.
*
* Note: currently there can be at most one bridge in a chain that sets
* this bit. This is to simplify corresponding glue code in connector
* drivers.
*/
DRM_BRIDGE_OP_HDMI_AUDIO = BIT(5),
};
/**
@ -926,23 +945,26 @@ struct drm_bridge {
unsigned int max_bpc;
/**
* @hdmi_audio_dev: device to be used as a parent for the HDMI Codec
* @hdmi_audio_dev: device to be used as a parent for the HDMI Codec if
* @DRM_BRIDGE_OP_HDMI_AUDIO is set.
*/
struct device *hdmi_audio_dev;
/**
* @hdmi_audio_max_i2s_playback_channels: maximum number of playback
* I2S channels for the HDMI codec
* I2S channels for the bridge that sets @DRM_BRIDGE_OP_HDMI_AUDIO.
*/
int hdmi_audio_max_i2s_playback_channels;
/**
* @hdmi_audio_spdif_playback: set if HDMI codec has S/PDIF playback port
* @hdmi_audio_spdif_playback: set if this bridge has S/PDIF playback
* port for @DRM_BRIDGE_OP_HDMI_AUDIO
*/
unsigned int hdmi_audio_spdif_playback : 1;
/**
* @hdmi_audio_dai_port: sound DAI port, -1 if it is not enabled
* @hdmi_audio_dai_port: sound DAI port for @DRM_BRIDGE_OP_HDMI_AUDIO,
* -1 if it is not used.
*/
int hdmi_audio_dai_port;
};