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drm/rockchip: cdn-dp: Support HDMI codec plug-change callback 

Some audio servers like to monitor a jack device (perhaps combined with
EDID, for audio-presence info) to determine DP/HDMI audio presence.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220114150129.v2.2.I20d754a1228aa5c51a18c8eb15a2c60dec25b639@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Brian Norris 2022-01-14 15:02:08 -08:00 committed by Mark Brown
parent e783362eb5
commit 9da1467b49
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 32 additions and 0 deletions
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28
drivers/gpu/drm/rockchip/cdn-dp-core.c
View File

@ -586,6 +586,13 @@ static bool cdn_dp_check_link_status(struct cdn_dp_device *dp)
return drm_dp_channel_eq_ok(link_status, min(port->lanes, sink_lanes));
}
static void cdn_dp_audio_handle_plugged_change(struct cdn_dp_device *dp,
bool plugged)
{
if (dp->codec_dev)
dp->plugged_cb(dp->codec_dev, plugged);
}
static void cdn_dp_encoder_enable(struct drm_encoder *encoder)
{
struct cdn_dp_device *dp = encoder_to_dp(encoder);
@ -641,6 +648,9 @@ static void cdn_dp_encoder_enable(struct drm_encoder *encoder)
DRM_DEV_ERROR(dp->dev, "Failed to valid video %d\n", ret);
goto out;
}
cdn_dp_audio_handle_plugged_change(dp, true);
out:
mutex_unlock(&dp->lock);
}
@ -651,6 +661,8 @@ static void cdn_dp_encoder_disable(struct drm_encoder *encoder)
int ret;
mutex_lock(&dp->lock);
cdn_dp_audio_handle_plugged_change(dp, false);
if (dp->active) {
ret = cdn_dp_disable(dp);
if (ret) {
@ -846,11 +858,27 @@ static int cdn_dp_audio_get_eld(struct device *dev, void *data,
return 0;
}
static int cdn_dp_audio_hook_plugged_cb(struct device *dev, void *data,
hdmi_codec_plugged_cb fn,
struct device *codec_dev)
{
struct cdn_dp_device *dp = dev_get_drvdata(dev);
mutex_lock(&dp->lock);
dp->plugged_cb = fn;
dp->codec_dev = codec_dev;
cdn_dp_audio_handle_plugged_change(dp, dp->connected);
mutex_unlock(&dp->lock);
return 0;
}
static const struct hdmi_codec_ops audio_codec_ops = {
.hw_params = cdn_dp_audio_hw_params,
.audio_shutdown = cdn_dp_audio_shutdown,
.mute_stream = cdn_dp_audio_mute_stream,
.get_eld = cdn_dp_audio_get_eld,
.hook_plugged_cb = cdn_dp_audio_hook_plugged_cb,
.no_capture_mute = 1,
};

4
drivers/gpu/drm/rockchip/cdn-dp-core.h
View File

@ -10,6 +10,7 @@
#include <drm/drm_dp_helper.h>
#include <drm/drm_panel.h>
#include <drm/drm_probe_helper.h>
#include <sound/hdmi-codec.h>
#include "rockchip_drm_drv.h"
@ -101,5 +102,8 @@ struct cdn_dp_device {
u8 dpcd[DP_RECEIVER_CAP_SIZE];
bool sink_has_audio;
hdmi_codec_plugged_cb plugged_cb;
struct device *codec_dev;
};
#endif /* _CDN_DP_CORE_H */