ASoC: qcom: sm8250: fix HDMI audio playback

Current code does not setup CPU dai (causing -EIO errors on playback)
and does not pass SND_SOC_DAIFMT_I2S to codec fmt (causing i2s-hifi
errors). Fix both errors to enable HDMI audio playback on SM8250. Tested
on RB5 platform.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: aa2e2785 ("ASoC: qcom: sm8250: add sound card qrb5165-rb5 support")
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20201119123145.709891-1-dmitry.baryshkov@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/sm8250.c

@@ -36,6 +36,7 @@ static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 
 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 {
+	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
 	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
@@ -43,10 +44,11 @@ static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 
 	switch (cpu_dai->id) {
 	case TERTIARY_MI2S_RX:
-		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF;
+		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
 		snd_soc_dai_set_sysclk(cpu_dai,
 			Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
 			MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+		snd_soc_dai_set_fmt(cpu_dai, fmt);
 		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 		break;
 	default: