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drm/bridge: sii902x: add audio graph card support

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Implement get_dai_id callback of audio HDMI codec
to support ASoC audio graph card.
HDMI audio output has to be connected to sii902x port 3.
get_dai_id callback maps this port to ASoC DAI index 0.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Acked-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1562141052-26221-1-git-send-email-olivier.moysan@st.com
This commit is contained in:
Olivier Moysan 2019-07-03 10:04:12 +02:00 committed by Benjamin Gaignard
parent 6b72c7a98b
commit 17224cf29c
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/bridge/sii902x.c
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@ -158,6 +158,8 @@
#define SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS 500
#define SII902X_AUDIO_PORT_INDEX 3
struct sii902x {
struct i2c_client *i2c;
struct regmap *regmap;
@ -692,11 +694,32 @@ static int sii902x_audio_get_eld(struct device *dev, void *data,
return 0;
}
static int sii902x_audio_get_dai_id(struct snd_soc_component *component,
struct device_node *endpoint)
{
struct of_endpoint of_ep;
int ret;
ret = of_graph_parse_endpoint(endpoint, &of_ep);
if (ret < 0)
return ret;
/*
* HDMI sound should be located at reg = <3>
* Return expected DAI index 0.
*/
if (of_ep.port == SII902X_AUDIO_PORT_INDEX)
return 0;
return -EINVAL;
}
static const struct hdmi_codec_ops sii902x_audio_codec_ops = {
.hw_params = sii902x_audio_hw_params,
.audio_shutdown = sii902x_audio_shutdown,
.digital_mute = sii902x_audio_digital_mute,
.get_eld = sii902x_audio_get_eld,
.get_dai_id = sii902x_audio_get_dai_id,
};
static int sii902x_audio_codec_init(struct sii902x *sii902x,