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drm/bridge: allow limiting I2S formats

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By default HDMI codec registers all formats supported on the I2S bus.
Allow bridges (and connectors) to limit the list of the PCM formats
supported by the HDMI codec.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20250517-drm-hdmi-connector-cec-v6-2-35651db6f19b@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Dmitry Baryshkov
2025-05-17 04:59:38 +03:00
parent fa3769e09b
commit d9f9bae675
5 changed files with 14 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/display/drm_bridge_connector.c
View File

@@ -717,6 +717,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
ret = drm_connector_hdmi_audio_init(connector, dev,
&drm_bridge_connector_hdmi_audio_funcs,
bridge->hdmi_audio_max_i2s_playback_channels,
bridge->hdmi_audio_i2s_formats,
bridge->hdmi_audio_spdif_playback,
bridge->hdmi_audio_dai_port);
if (ret)

3
drivers/gpu/drm/display/drm_hdmi_audio_helper.c
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@@ -142,6 +142,7 @@ static const struct hdmi_codec_ops drm_connector_hdmi_audio_ops = {
* @hdmi_codec_dev: device to be used as a parent for the HDMI Codec
* @funcs: callbacks for this HDMI Codec
* @max_i2s_playback_channels: maximum number of playback I2S channels
* @i2s_formats: set of I2S formats (use 0 for a bus-specific set)
* @spdif_playback: set if HDMI codec has S/PDIF playback port
* @dai_port: sound DAI port, -1 if it is not enabled
*
@@ -154,6 +155,7 @@ int drm_connector_hdmi_audio_init(struct drm_connector *connector,
struct device *hdmi_codec_dev,
const struct drm_connector_hdmi_audio_funcs *funcs,
unsigned int max_i2s_playback_channels,
u64 i2s_formats,
bool spdif_playback,
int dai_port)
{
@@ -161,6 +163,7 @@ int drm_connector_hdmi_audio_init(struct drm_connector *connector,
.ops = &drm_connector_hdmi_audio_ops,
.max_i2s_channels = max_i2s_playback_channels,
.i2s = !!max_i2s_playback_channels,
.i2s_formats = i2s_formats,
.spdif = spdif_playback,
.no_i2s_capture = true,
.no_spdif_capture = true,

2
drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -562,7 +562,7 @@ static int vc4_hdmi_connector_init(struct drm_device *dev,
ret = drm_connector_hdmi_audio_init(connector, dev->dev,
&vc4_hdmi_audio_funcs,
8, false, -1);
8, 0, false, -1);
if (ret)
return ret;

1
include/drm/display/drm_hdmi_audio_helper.h
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@@ -14,6 +14,7 @@ int drm_connector_hdmi_audio_init(struct drm_connector *connector,
struct device *hdmi_codec_dev,
const struct drm_connector_hdmi_audio_funcs *funcs,
unsigned int max_i2s_playback_channels,
u64 i2s_formats,
bool spdif_playback,
int sound_dai_port);
void drm_connector_hdmi_audio_plugged_notify(struct drm_connector *connector,

8
include/drm/drm_bridge.h
View File

@@ -1016,6 +1016,14 @@ struct drm_bridge {
*/
int hdmi_audio_max_i2s_playback_channels;
/**
* @hdmi_audio_i2s_formats: supported I2S formats, optional. The
* default is to allow all formats supported by the corresponding I2S
* bus driver. This is only used for bridges setting
* @DRM_BRIDGE_OP_HDMI_AUDIO or @DRM_BRIDGE_OP_DP_AUDIO.
*/
u64 hdmi_audio_i2s_formats;
/**
* @hdmi_audio_spdif_playback: set if this bridge has S/PDIF playback
* port for @DRM_BRIDGE_OP_HDMI_AUDIO or @DRM_BRIDGE_OP_DP_AUDIO.