C++ (Cpp) jz4740_i2c_init_pcm_config示例

示例#1

文件： jz4740-i2s.c 项目： 020gzh/linux

static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai)
{
	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);
	uint32_t conf;

	clk_prepare_enable(i2s->clk_aic);

	jz4740_i2c_init_pcm_config(i2s);
	snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data,
		&i2s->capture_dma_data);

	if (i2s->version >= JZ_I2S_JZ4780) {
		conf = (7 << JZ4780_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |
			(8 << JZ4780_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) |
			JZ_AIC_CONF_OVERFLOW_PLAY_LAST |
			JZ_AIC_CONF_I2S |
			JZ_AIC_CONF_INTERNAL_CODEC;
	} else {
		conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |
			(8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) |
			JZ_AIC_CONF_OVERFLOW_PLAY_LAST |
			JZ_AIC_CONF_I2S |
			JZ_AIC_CONF_INTERNAL_CODEC;
	}

	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET);
	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);

	return 0;
}

示例#2

文件： jz4740-i2s.c 项目： AeroGirl/VAR-SOM-AM33-SDK7-Kernel

static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai)
{
	struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);
	uint32_t conf;

	clk_prepare_enable(i2s->clk_aic);

	jz4740_i2c_init_pcm_config(i2s);

	conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |
		(8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) |
		JZ_AIC_CONF_OVERFLOW_PLAY_LAST |
		JZ_AIC_CONF_I2S |
		JZ_AIC_CONF_INTERNAL_CODEC;

	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET);
	jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);

	return 0;
}