C++ (Cpp) twl6040_get_clk_id示例

示例#1

文件： omap-abe-twl6040.c 项目： romanbb/android_kernel_lge_d851

static int omap_abe_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_card *card = codec->card;
	struct omap_abe_twl6040_data *pdata = dev_get_platdata(card->dev);
	int clk_id, freq;
	int ret;

	clk_id = twl6040_get_clk_id(rtd->codec);
	if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
		freq = pdata->mclk_freq;
	else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
		freq = 32768;
	else
		return -EINVAL;

	/*                    */
	ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
				SND_SOC_CLOCK_IN);
	if (ret) {
		printk(KERN_ERR "can't set codec system clock\n");
		return ret;
	}
	return ret;
}

示例#2

文件： sdp4430.c 项目： CSCLOG/beaglebone

static int sdp4430_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	int clk_id, freq;
	int ret;

	clk_id = twl6040_get_clk_id(rtd->codec);
	if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
		freq = 38400000;
	else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
		freq = 32768;
	else
		return -EINVAL;

	/* set the codec mclk */
	ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
				SND_SOC_CLOCK_IN);
	if (ret) {
		printk(KERN_ERR "can't set codec system clock\n");
		return ret;
	}
	return ret;
}

示例#3

文件： omap-abe-twl6040.c 项目： robacklin/omap-android

static int omap_abe_mcpdm_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_card *card = rtd->card;
	struct omap_abe_twl6040_data *pdata = dev_get_platdata(card->dev);
	struct twl6040 *twl6040 = codec->control_data;
	int clk_id, freq;
	int ret;

	/* twl6040 supplies McPDM PAD_CLKS */
	ret = twl6040_power(twl6040, 1);
	if (ret) {
		dev_err(card->dev, "failed to enable twl6040\n");
		return ret;
	}

	clk_id = twl6040_get_clk_id(codec);
	if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
		freq = pdata->mclk_freq;
	else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
		freq = 32768;
	else {
		dev_err(card->dev, "invalid clock\n");
		ret = -EINVAL;
		goto err;
	}

	/* set the codec mclk */
	ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
				SND_SOC_CLOCK_IN);
	if (ret) {
		dev_err(card->dev, "can't set codec system clock\n");
		goto err;
	}

	return 0;

err:
	twl6040_power(twl6040, 0);
	return ret;
}