static int rx1950_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; int div; int ret; unsigned int rate = params_rate(params); int clk_source, fs_mode; switch (rate) { case 16000: case 48000: clk_source = S3C24XX_CLKSRC_PCLK; fs_mode = S3C2410_IISMOD_256FS; div = s3c24xx_i2s_get_clockrate() / (256 * rate); if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate)) div++; break; case 44100: case 88200: clk_source = S3C24XX_CLKSRC_MPLL; fs_mode = S3C2410_IISMOD_384FS; div = 1; break; default: printk(KERN_ERR "%s: rate %d is not supported\n", __func__, rate); return -EINVAL; } /* select clock source */ ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; /* set MCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, fs_mode); if (ret < 0) return ret; /* set BCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, S3C2410_IISMOD_32FS); if (ret < 0) return ret; /* set prescaler division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, S3C24XX_PRESCALE(div, div)); if (ret < 0) return ret; return 0; }
static int h1940_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; int div; int ret; unsigned int rate = params_rate(params); switch (rate) { case 11025: case 22050: case 44100: div = s3c24xx_i2s_get_clockrate() / (384 * rate); if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate)) div++; break; default: dev_err(rtd->dev, "%s: rate %d is not supported\n", __func__, rate); return -EINVAL; } /* select clock source */ ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; /* set MCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, S3C2410_IISMOD_384FS); if (ret < 0) return ret; /* set BCLK division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, S3C2410_IISMOD_32FS); if (ret < 0) return ret; /* set prescaler division for sample rate */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, S3C24XX_PRESCALE(div, div)); if (ret < 0) return ret; return 0; }
static int neo1973_gta02_voice_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->dai->codec_dai; unsigned int pcmdiv = 0; int ret = 0; unsigned long iis_clkrate; iis_clkrate = s3c24xx_i2s_get_clockrate(); if (params_rate(params) != 8000) return -EINVAL; if (params_channels(params) != 1) return -EINVAL; pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */ /* todo: gg check mode (DSP_B) against CSR datasheet */ /* set codec DAI configuration */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) return ret; /* set the codec system clock for DAC and ADC */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000, SND_SOC_CLOCK_IN); if (ret < 0) return ret; /* set codec PCM division for sample rate */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv); if (ret < 0) return ret; /* configue and enable PLL for 12.288MHz output */ ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, iis_clkrate / 4, 12288000); if (ret < 0) return ret; return 0; }
static int neo1973_voice_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; unsigned int pcmdiv = 0; int ret = 0; unsigned long iis_clkrate; iis_clkrate = s3c24xx_i2s_get_clockrate(); if (params_rate(params) != 8000) return -EINVAL; if (params_channels(params) != 1) return -EINVAL; pcmdiv = WM8753_PCM_DIV_6; /* */ /* */ /* */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000, SND_SOC_CLOCK_IN); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, iis_clkrate / 4, 12288000); if (ret < 0) return ret; return 0; }
static int neo1973_hifi_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_dai *cpu_dai = rtd->cpu_dai; unsigned int pll_out = 0, bclk = 0; int ret = 0; unsigned long iis_clkrate; iis_clkrate = s3c24xx_i2s_get_clockrate(); switch (params_rate(params)) { case 8000: case 16000: pll_out = 12288000; break; case 48000: bclk = WM8753_BCLK_DIV_4; pll_out = 12288000; break; case 96000: bclk = WM8753_BCLK_DIV_2; pll_out = 12288000; break; case 11025: bclk = WM8753_BCLK_DIV_16; pll_out = 11289600; break; case 22050: bclk = WM8753_BCLK_DIV_8; pll_out = 11289600; break; case 44100: bclk = WM8753_BCLK_DIV_4; pll_out = 11289600; break; case 88200: bclk = WM8753_BCLK_DIV_2; pll_out = 11289600; break; } /* */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out, SND_SOC_CLOCK_IN); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, S3C2410_IISMOD_32FS); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, S3C24XX_PRESCALE(4, 4)); if (ret < 0) return ret; /* */ ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, iis_clkrate / 4, pll_out); if (ret < 0) return ret; return 0; }
static int smdk2440_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_cpu_dai *cpu_dai = rtd->dai->cpu_dai; struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai; unsigned long iis_clkrate; int div, div256, div384, diff256, diff384, bclk, mclk; int ret; unsigned int rate=params_rate(params); DBG("Entered %s\n",__FUNCTION__); iis_clkrate = s3c24xx_i2s_get_clockrate(); /* Using PCLK doesnt seem to suit audio particularly well on these cpu's */ div256 = iis_clkrate / (rate * 256); div384 = iis_clkrate / (rate * 384); if (((iis_clkrate / div256) - (rate * 256)) < ((rate * 256) - (iis_clkrate / (div256 + 1)))) { diff256 = (iis_clkrate / div256) - (rate * 256); } else { div256++; diff256 = (iis_clkrate / div256) - (rate * 256); } if (((iis_clkrate / div384) - (rate * 384)) < ((rate * 384) - (iis_clkrate / (div384 + 1)))) { diff384 = (iis_clkrate / div384) - (rate * 384); } else { div384++; diff384 = (iis_clkrate / div384) - (rate * 384); } DBG("diff256 %d, diff384 %d\n", diff256, diff384); if (diff256<=diff384) { DBG("Selected 256FS\n"); div = div256 - 1; bclk = S3C2410_IISMOD_256FS; } else { DBG("Selected 384FS\n"); div = div384 - 1; bclk = S3C2410_IISMOD_384FS; } /* set codec DAI configuration */ ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) return ret; /* set cpu DAI configuration */ ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (ret < 0) return ret; /* set the audio system clock for DAC and ADC */ ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; /* set MCLK division for sample rate */ ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, S3C2410_IISMOD_32FS ); if (ret < 0) return ret; /* set BCLK division for sample rate */ ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, bclk); if (ret < 0) return ret; /* set prescaler division for sample rate */ ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, S3C24XX_PRESCALE(div,div)); if (ret < 0) return ret; return 0; }