Unverified Commit 9da1467b authored by Brian Norris's avatar Brian Norris Committed by Mark Brown
Browse files

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: default avatarBrian Norris <briannorris@chromium.org>
Reviewed-by: default avatarChen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220114150129.v2.2.I20d754a1228aa5c51a18c8eb15a2c60dec25b639@changeid


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent e783362e

drivers/gpu/drm/rockchip/cdn-dp-core.c

+28 −0
Original line number Diff line number Diff line
@@ -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,

};

drivers/gpu/drm/rockchip/cdn-dp-core.h

+4 −0
Original line number Diff line number Diff line
@@ -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 */