ALSA: asoc: machines - add Digital Audio Interface (DAI) control functions.

This patch adds several functions for DAI control and config
and replaces the current method of calling function pointers within
the DAI struct within the machine drivers.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/soc/davinci/davinci-evm.c

@@ -38,19 +38,19 @@ static int evm_hw_params(struct snd_pcm_substream *substream,
 	int ret = 0;
 
 	/* set codec DAI configuration */
-	ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 					 SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0)
 		return ret;
 
 	/* set cpu DAI configuration */
-	ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
 				       SND_SOC_DAIFMT_IB_NF);
 	if (ret < 0)
 		return ret;
 
 	/* set the codec system clock */
-	ret = codec_dai->dai_ops.set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
 					    SND_SOC_CLOCK_OUT);
 	if (ret < 0)
 		return ret;