18 Nov
2013
18 Nov
'13
4:56 p.m.
+static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,struct snd_soc_dai *dai)+{
- struct bcm2835_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
- unsigned int sampling_rate = params_rate(params);
- unsigned int data_length, data_delay, bclk_ratio;
- unsigned int ch1pos, ch2pos, mode, format;
- unsigned int mash = BCM2835_CLK_MASH_1;
- unsigned int divi, divf, target_frequency;
- int clk_src = -1;
- unsigned int master = dev->fmt & SND_SOC_DAIFMT_MASTER_MASK;
- uint32_t bit_master = (master == SND_SOC_DAIFMT_CBS_CFS
|| master == SND_SOC_DAIFMT_CBS_CFM);- uint32_t frame_master = (master == SND_SOC_DAIFMT_CBS_CFS
So, if master == SND_SOC_DAIFMT_CBS_CFS both bit_master and frame_master will be true. Is it correct?
Yes. That is exactly what CBS_CFS expresses: Codec Bit Slave and Codec Frame Slave So the interface is bit master as well as frame master. Did I miss anything?