[PATCH v3 7/7] ASoC: hdmi-codec: add .auto_selectable_formats support

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
v2 -> v3
	- don't try to have SND_SOC_DAIFMT_CBx_CFx

 sound/soc/codecs/hdmi-codec.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 1567ba196ab9..02d2614f9eee 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -580,12 +580,33 @@ static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
 	return -ENOTSUPP;
 }
 
+/*
+ * This driver can select all SND_SOC_DAIFMT_CBx_CFx,
+ * but need to be selected from Sound Card, not be auto selected.
+ * Because it might be used from other driver.
+ * For example,
+ *	${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
+ */
+static u64 hdmi_codec_formats =
+	SND_SOC_POSSIBLE_DAIFMT_NB_NF	|
+	SND_SOC_POSSIBLE_DAIFMT_NB_IF	|
+	SND_SOC_POSSIBLE_DAIFMT_IB_NF	|
+	SND_SOC_POSSIBLE_DAIFMT_IB_IF	|
+	SND_SOC_POSSIBLE_DAIFMT_I2S	|
+	SND_SOC_POSSIBLE_DAIFMT_DSP_A	|
+	SND_SOC_POSSIBLE_DAIFMT_DSP_B	|
+	SND_SOC_POSSIBLE_DAIFMT_RIGHT_J	|
+	SND_SOC_POSSIBLE_DAIFMT_LEFT_J	|
+	SND_SOC_POSSIBLE_DAIFMT_AC97;
+
 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
 	.startup	= hdmi_codec_startup,
 	.shutdown	= hdmi_codec_shutdown,
 	.hw_params	= hdmi_codec_hw_params,
 	.set_fmt	= hdmi_codec_i2s_set_fmt,
 	.mute_stream	= hdmi_codec_mute,
+	.auto_selectable_formats	= &hdmi_codec_formats,
+	.num_auto_selectable_formats	= 1,
 };
 
 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
-- 
2.25.1