static int rk_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 *cpu_dai = rtd->cpu_dai;
unsigned long pll_out, rclk_rate;
int ret, ratio;
RK_SPDIF_DBG("spdif:Entered %s\n", __func__);
switch (params_rate(params)) {
case 44100:
pll_out = 11289600;
break;
case 32000:
pll_out = 8192000;
break;
case 48000:
pll_out = 12288000;
break;
case 96000:
pll_out = 24576000;
break;
default:
printk("rk_spdif: params not support\n");
return -EINVAL;
}
ratio = 256;
rclk_rate = params_rate(params) * ratio;
/* Set audio source clock rates */
ret = set_audio_clock_rate(pll_out, rclk_rate);
if (ret < 0)
return ret;
/* Set S/PDIF uses internal source clock */
//ret = snd_soc_dai_set_sysclk(cpu_dai, SND_SOC_SPDIF_INT_MCLK,
//rclk_rate, SND_SOC_CLOCK_IN);
//if (ret < 0)
//return ret;
return ret;
}
static int smdk_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 *cpu_dai = rtd->cpu_dai;
unsigned long pll_out, rclk_rate;
int ret, ratio;
switch (params_rate(params)) {
case 44100:
pll_out = 45158400;
break;
case 32000:
case 48000:
case 96000:
pll_out = 49152000;
break;
default:
return -EINVAL;
}
/* Setting ratio to 512fs helps to use S/PDIF with HDMI without
* modify S/PDIF ASoC machine driver.
*/
ratio = 512;
rclk_rate = params_rate(params) * ratio;
/* Set audio source clock rates */
ret = set_audio_clock_rate(pll_out, rclk_rate);
if (ret < 0)
return ret;
/* Set S/PDIF uses internal source clock */
ret = snd_soc_dai_set_sysclk(cpu_dai, SND_SOC_SPDIF_INT_MCLK,
rclk_rate, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return ret;
}
static int smdk_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 *cpu_dai = rtd->cpu_dai;
unsigned long pll_out, rclk_rate;
int ret, ratio;
switch (params_rate(params)) {
case 44100:
pll_out = 45158400;
break;
case 32000:
case 48000:
case 96000:
pll_out = 49152000;
break;
default:
return -EINVAL;
}
/*
*/
ratio = 512;
rclk_rate = params_rate(params) * ratio;
/* */
ret = set_audio_clock_rate(pll_out, rclk_rate);
if (ret < 0)
return ret;
/* */
ret = snd_soc_dai_set_sysclk(cpu_dai, SND_SOC_SPDIF_INT_MCLK,
rclk_rate, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return ret;
}
