static int fsl_mqs_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct fsl_mqs *mqs_priv = snd_soc_codec_get_drvdata(codec);
int div, res;
mqs_priv->mclk_rate = clk_get_rate(mqs_priv->mclk);
mqs_priv->bclk = snd_soc_params_to_bclk(params);
mqs_priv->lrclk = params_rate(params);
/*
* mclk_rate / (oversample(32,64) * FS * 2 * divider ) = repeat_rate;
* if repeat_rate is 8, mqs can achieve better quality.
* oversample rate is fix to 32 currently.
*/
div = mqs_priv->mclk_rate / (32 * 2 * mqs_priv->lrclk * 8);
res = mqs_priv->mclk_rate % (32 * 2 * mqs_priv->lrclk * 8);
if (res == 0 && div > 0 && div <= 256) {
regmap_update_bits(mqs_priv->gpr, IOMUXC_GPR2,
IMX6SX_GPR2_MQS_CLK_DIV_MASK, (div-1) << IMX6SX_GPR2_MQS_CLK_DIV_SHIFT);
regmap_update_bits(mqs_priv->gpr, IOMUXC_GPR2,
IMX6SX_GPR2_MQS_OVERSAMPLE_MASK, 0 << IMX6SX_GPR2_MQS_OVERSAMPLE_SHIFT);
} else
dev_err(&mqs_priv->pdev->dev, "can't get proper divider\n");
return 0;
}
static int arizona_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
struct arizona *arizona = priv->arizona;
int base = dai->driver->base;
const int *rates;
int i, ret, val;
int chan_limit = arizona->pdata.max_channels_clocked[dai->id - 1];
int bclk, lrclk, wl, frame, bclk_target;
if (params_rate(params) % 8000)
rates = &arizona_44k1_bclk_rates[0];
else
rates = &arizona_48k_bclk_rates[0];
bclk_target = snd_soc_params_to_bclk(params);
if (chan_limit && chan_limit < params_channels(params)) {
arizona_aif_dbg(dai, "Limiting to %d channels\n", chan_limit);
bclk_target /= params_channels(params);
bclk_target *= chan_limit;
}
/* Force stereo for I2S mode */
val = snd_soc_read(codec, base + ARIZONA_AIF_FORMAT);
if (params_channels(params) == 1 && (val & ARIZONA_AIF1_FMT_MASK)) {
arizona_aif_dbg(dai, "Forcing stereo mode\n");
bclk_target *= 2;
}
for (i = 0; i < ARRAY_SIZE(arizona_44k1_bclk_rates); i++) {
if (rates[i] >= bclk_target &&
rates[i] % params_rate(params) == 0) {
bclk = i;
break;
}
}
if (i == ARRAY_SIZE(arizona_44k1_bclk_rates)) {
arizona_aif_err(dai, "Unsupported sample rate %dHz\n",
params_rate(params));
return -EINVAL;
}
lrclk = rates[bclk] / params_rate(params);
arizona_aif_dbg(dai, "BCLK %dHz LRCLK %dHz\n",
rates[bclk], rates[bclk] / lrclk);
wl = snd_pcm_format_width(params_format(params));
frame = wl << ARIZONA_AIF1TX_WL_SHIFT | wl;
ret = arizona_hw_params_rate(substream, params, dai);
if (ret != 0)
return ret;
snd_soc_update_bits(codec, base + ARIZONA_AIF_BCLK_CTRL,
ARIZONA_AIF1_BCLK_FREQ_MASK, bclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_TX_BCLK_RATE,
ARIZONA_AIF1TX_BCPF_MASK, lrclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RX_BCLK_RATE,
ARIZONA_AIF1RX_BCPF_MASK, lrclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_1,
ARIZONA_AIF1TX_WL_MASK |
ARIZONA_AIF1TX_SLOT_LEN_MASK, frame);
snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_2,
ARIZONA_AIF1RX_WL_MASK |
ARIZONA_AIF1RX_SLOT_LEN_MASK, frame);
return 0;
}
static int pcm512x_set_dividers(struct snd_soc_dai *dai,
struct snd_pcm_hw_params *params)
{
struct device *dev = dai->dev;
struct snd_soc_codec *codec = dai->codec;
struct pcm512x_priv *pcm512x = snd_soc_codec_get_drvdata(codec);
unsigned long pllin_rate = 0;
unsigned long pll_rate;
unsigned long sck_rate;
unsigned long mck_rate;
unsigned long bclk_rate;
unsigned long sample_rate;
unsigned long osr_rate;
unsigned long dacsrc_rate;
int bclk_div;
int lrclk_div;
int dsp_div;
int dac_div;
unsigned long dac_rate;
int ncp_div;
int osr_div;
int ret;
int idac;
int fssp;
int gpio;
lrclk_div = snd_soc_params_to_frame_size(params);
if (lrclk_div == 0) {
dev_err(dev, "No LRCLK?\n");
return -EINVAL;
}
if (!pcm512x->pll_out) {
sck_rate = clk_get_rate(pcm512x->sclk);
bclk_div = params->rate_den * 64 / lrclk_div;
bclk_rate = DIV_ROUND_CLOSEST(sck_rate, bclk_div);
mck_rate = sck_rate;
} else {
ret = snd_soc_params_to_bclk(params);
if (ret < 0) {
dev_err(dev, "Failed to find suitable BCLK: %d\n", ret);
return ret;
}
if (ret == 0) {
dev_err(dev, "No BCLK?\n");
return -EINVAL;
}
bclk_rate = ret;
pllin_rate = clk_get_rate(pcm512x->sclk);
sck_rate = pcm512x_find_sck(dai, bclk_rate);
if (!sck_rate)
return -EINVAL;
pll_rate = 4 * sck_rate;
ret = pcm512x_find_pll_coeff(dai, pllin_rate, pll_rate);
if (ret != 0)
return ret;
ret = regmap_write(pcm512x->regmap,
PCM512x_PLL_COEFF_0, pcm512x->pll_p - 1);
if (ret != 0) {
dev_err(dev, "Failed to write PLL P: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap,
PCM512x_PLL_COEFF_1, pcm512x->pll_j);
if (ret != 0) {
dev_err(dev, "Failed to write PLL J: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap,
PCM512x_PLL_COEFF_2, pcm512x->pll_d >> 8);
if (ret != 0) {
dev_err(dev, "Failed to write PLL D msb: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap,
PCM512x_PLL_COEFF_3, pcm512x->pll_d & 0xff);
if (ret != 0) {
dev_err(dev, "Failed to write PLL D lsb: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap,
PCM512x_PLL_COEFF_4, pcm512x->pll_r - 1);
if (ret != 0) {
dev_err(dev, "Failed to write PLL R: %d\n", ret);
return ret;
}
mck_rate = pcm512x->real_pll;
bclk_div = DIV_ROUND_CLOSEST(sck_rate, bclk_rate);
}
if (bclk_div > 128) {
dev_err(dev, "Failed to find BCLK divider\n");
return -EINVAL;
}
/* the actual rate */
sample_rate = sck_rate / bclk_div / lrclk_div;
osr_rate = 16 * sample_rate;
/* run DSP no faster than 50 MHz */
dsp_div = mck_rate > pcm512x_dsp_max(pcm512x) ? 2 : 1;
dac_rate = pcm512x_pllin_dac_rate(dai, osr_rate, pllin_rate);
if (dac_rate) {
/* the desired clock rate is "compatible" with the pll input
* clock, so use that clock as dac input instead of the pll
* output clock since the pll will introduce jitter and thus
* noise.
*/
dev_dbg(dev, "using pll input as dac input\n");
ret = regmap_update_bits(pcm512x->regmap, PCM512x_DAC_REF,
PCM512x_SDAC, PCM512x_SDAC_GPIO);
if (ret != 0) {
dev_err(codec->dev,
"Failed to set gpio as dacref: %d\n", ret);
return ret;
}
gpio = PCM512x_GREF_GPIO1 + pcm512x->pll_in - 1;
ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_DACIN,
PCM512x_GREF, gpio);
if (ret != 0) {
dev_err(codec->dev,
"Failed to set gpio %d as dacin: %d\n",
pcm512x->pll_in, ret);
return ret;
}
dacsrc_rate = pllin_rate;
} else {
/* run DAC no faster than 6144000 Hz */
unsigned long dac_mul = pcm512x_dac_max(pcm512x, 6144000)
/ osr_rate;
unsigned long sck_mul = sck_rate / osr_rate;
for (; dac_mul; dac_mul--) {
if (!(sck_mul % dac_mul))
break;
}
if (!dac_mul) {
dev_err(dev, "Failed to find DAC rate\n");
return -EINVAL;
}
dac_rate = dac_mul * osr_rate;
dev_dbg(dev, "dac_rate %lu sample_rate %lu\n",
dac_rate, sample_rate);
ret = regmap_update_bits(pcm512x->regmap, PCM512x_DAC_REF,
PCM512x_SDAC, PCM512x_SDAC_SCK);
if (ret != 0) {
dev_err(codec->dev,
"Failed to set sck as dacref: %d\n", ret);
return ret;
}
dacsrc_rate = sck_rate;
}
osr_div = DIV_ROUND_CLOSEST(dac_rate, osr_rate);
if (osr_div > 128) {
dev_err(dev, "Failed to find OSR divider\n");
return -EINVAL;
}
dac_div = DIV_ROUND_CLOSEST(dacsrc_rate, dac_rate);
if (dac_div > 128) {
dev_err(dev, "Failed to find DAC divider\n");
return -EINVAL;
}
dac_rate = dacsrc_rate / dac_div;
ncp_div = DIV_ROUND_CLOSEST(dac_rate,
pcm512x_ncp_target(pcm512x, dac_rate));
if (ncp_div > 128 || dac_rate / ncp_div > 2048000) {
/* run NCP no faster than 2048000 Hz, but why? */
ncp_div = DIV_ROUND_UP(dac_rate, 2048000);
if (ncp_div > 128) {
dev_err(dev, "Failed to find NCP divider\n");
return -EINVAL;
}
}
idac = mck_rate / (dsp_div * sample_rate);
ret = regmap_write(pcm512x->regmap, PCM512x_DSP_CLKDIV, dsp_div - 1);
if (ret != 0) {
dev_err(dev, "Failed to write DSP divider: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap, PCM512x_DAC_CLKDIV, dac_div - 1);
if (ret != 0) {
dev_err(dev, "Failed to write DAC divider: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap, PCM512x_NCP_CLKDIV, ncp_div - 1);
if (ret != 0) {
dev_err(dev, "Failed to write NCP divider: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap, PCM512x_OSR_CLKDIV, osr_div - 1);
if (ret != 0) {
dev_err(dev, "Failed to write OSR divider: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap,
PCM512x_MASTER_CLKDIV_1, bclk_div - 1);
if (ret != 0) {
dev_err(dev, "Failed to write BCLK divider: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap,
PCM512x_MASTER_CLKDIV_2, lrclk_div - 1);
if (ret != 0) {
dev_err(dev, "Failed to write LRCLK divider: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_1, idac >> 8);
if (ret != 0) {
dev_err(dev, "Failed to write IDAC msb divider: %d\n", ret);
return ret;
}
ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_2, idac & 0xff);
if (ret != 0) {
dev_err(dev, "Failed to write IDAC lsb divider: %d\n", ret);
return ret;
}
if (sample_rate <= pcm512x_dac_max(pcm512x, 48000))
fssp = PCM512x_FSSP_48KHZ;
else if (sample_rate <= pcm512x_dac_max(pcm512x, 96000))
fssp = PCM512x_FSSP_96KHZ;
else if (sample_rate <= pcm512x_dac_max(pcm512x, 192000))
fssp = PCM512x_FSSP_192KHZ;
else
fssp = PCM512x_FSSP_384KHZ;
ret = regmap_update_bits(pcm512x->regmap, PCM512x_FS_SPEED_MODE,
PCM512x_FSSP, fssp);
if (ret != 0) {
dev_err(codec->dev, "Failed to set fs speed: %d\n", ret);
return ret;
}
dev_dbg(codec->dev, "DSP divider %d\n", dsp_div);
dev_dbg(codec->dev, "DAC divider %d\n", dac_div);
dev_dbg(codec->dev, "NCP divider %d\n", ncp_div);
dev_dbg(codec->dev, "OSR divider %d\n", osr_div);
dev_dbg(codec->dev, "BCK divider %d\n", bclk_div);
dev_dbg(codec->dev, "LRCK divider %d\n", lrclk_div);
dev_dbg(codec->dev, "IDAC %d\n", idac);
dev_dbg(codec->dev, "1<<FSSP %d\n", 1 << fssp);
return 0;
}
static int wm8985_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
int i;
struct snd_soc_codec *codec;
struct wm8985_priv *wm8985;
u16 blen, srate_idx;
unsigned int tmp;
int srate_best;
codec = dai->codec;
wm8985 = snd_soc_codec_get_drvdata(codec);
wm8985->bclk = snd_soc_params_to_bclk(params);
if ((int)wm8985->bclk < 0)
return wm8985->bclk;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
blen = 0x0;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
blen = 0x1;
break;
case SNDRV_PCM_FORMAT_S24_LE:
blen = 0x2;
break;
case SNDRV_PCM_FORMAT_S32_LE:
blen = 0x3;
break;
default:
dev_err(dai->dev, "Unsupported word length %u\n",
params_format(params));
return -EINVAL;
}
snd_soc_update_bits(codec, WM8985_AUDIO_INTERFACE,
WM8985_WL_MASK, blen << WM8985_WL_SHIFT);
/*
* match to the nearest possible sample rate and rely
* on the array index to configure the SR register
*/
srate_idx = 0;
srate_best = abs(srates[0] - params_rate(params));
for (i = 1; i < ARRAY_SIZE(srates); ++i) {
if (abs(srates[i] - params_rate(params)) >= srate_best)
continue;
srate_idx = i;
srate_best = abs(srates[i] - params_rate(params));
}
dev_dbg(dai->dev, "Selected SRATE = %d\n", srates[srate_idx]);
snd_soc_update_bits(codec, WM8985_ADDITIONAL_CONTROL,
WM8985_SR_MASK, srate_idx << WM8985_SR_SHIFT);
dev_dbg(dai->dev, "Target BCLK = %uHz\n", wm8985->bclk);
dev_dbg(dai->dev, "SYSCLK = %uHz\n", wm8985->sysclk);
for (i = 0; i < ARRAY_SIZE(fs_ratios); ++i) {
if (wm8985->sysclk / params_rate(params)
== fs_ratios[i].ratio)
break;
}
if (i == ARRAY_SIZE(fs_ratios)) {
dev_err(dai->dev, "Unable to configure MCLK ratio %u/%u\n",
wm8985->sysclk, params_rate(params));
return -EINVAL;
}
dev_dbg(dai->dev, "MCLK ratio = %dfs\n", fs_ratios[i].ratio);
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_MCLKDIV_MASK, i << WM8985_MCLKDIV_SHIFT);
/* select the appropriate bclk divider */
tmp = (wm8985->sysclk / fs_ratios[i].div) * 10;
for (i = 0; i < ARRAY_SIZE(bclk_divs); ++i) {
if (wm8985->bclk == tmp / bclk_divs[i])
break;
}
if (i == ARRAY_SIZE(bclk_divs)) {
dev_err(dai->dev, "No matching BCLK divider found\n");
return -EINVAL;
}
dev_dbg(dai->dev, "BCLK div = %d\n", i);
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_BCLKDIV_MASK, i << WM8985_BCLKDIV_SHIFT);
return 0;
}
static int arizona_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1];
unsigned int val;
int base = dai->driver->base;
const int *rates;
int i, ret, bclk_target;
int bclk, lrclk, wl, frame, sr_val;
//printk("Arizona: hw params start\n");
if (params_rate(params) % 8000)
rates = &arizona_44k1_bclk_rates[0];
else
rates = &arizona_48k_bclk_rates[0];
/* Force BCLK to stereo for I2S */
bclk_target = snd_soc_params_to_bclk(params);
val = snd_soc_read(codec, base + ARIZONA_AIF_FORMAT);
if (val & ARIZONA_AIF1_FMT_MASK && params_channels(params) == 1) {
arizona_aif_err(dai, "Forcing stereo mode\n");
bclk_target *= 2;
}
for (i = 0; i < ARRAY_SIZE(arizona_44k1_bclk_rates); i++) {
if (rates[i] >= bclk_target &&
rates[i] % params_rate(params) == 0) {
bclk = i;
break;
}
}
if (i == ARRAY_SIZE(arizona_44k1_bclk_rates)) {
arizona_aif_err(dai, "Unsupported sample rate %dHz\n",
params_rate(params));
return -EINVAL;
}
for (i = 0; i < ARRAY_SIZE(arizona_sr_vals); i++)
if (arizona_sr_vals[i] == params_rate(params))
break;
if (i == ARRAY_SIZE(arizona_sr_vals)) {
arizona_aif_err(dai, "Unsupported sample rate %dHz\n",
params_rate(params));
return -EINVAL;
}
sr_val = i;
lrclk = rates[bclk] / params_rate(params);
arizona_aif_dbg(dai, "BCLK %dHz LRCLK %dHz\n",
rates[bclk], rates[bclk] / lrclk);
wl = snd_pcm_format_width(params_format(params));
frame = wl << ARIZONA_AIF1TX_WL_SHIFT | wl;
/*
* We will need to be more flexible than this in future,
* currently we use a single sample rate for SYSCLK.
*/
switch (dai_priv->clk) {
case ARIZONA_CLK_SYSCLK:
/* SR2 is forced to 8kHz */
if (params_rate(params) != 8000) {
snd_soc_update_bits(codec, ARIZONA_SAMPLE_RATE_1,
ARIZONA_SAMPLE_RATE_1_MASK, sr_val);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
ARIZONA_AIF1_RATE_MASK, 0);
} else {
snd_soc_update_bits(codec, ARIZONA_SAMPLE_RATE_2,
ARIZONA_SAMPLE_RATE_2_MASK, sr_val);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
ARIZONA_AIF1_RATE_MASK, 1);
}
break;
case ARIZONA_CLK_ASYNCCLK:
snd_soc_update_bits(codec, ARIZONA_ASYNC_SAMPLE_RATE_1,
ARIZONA_ASYNC_SAMPLE_RATE_MASK, sr_val);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
ARIZONA_AIF1_RATE_MASK, 8);
break;
default:
arizona_aif_err(dai, "Invalid clock %d\n", dai_priv->clk);
return -EINVAL;
}
snd_soc_update_bits(codec, base + ARIZONA_AIF_BCLK_CTRL,
ARIZONA_AIF1_BCLK_FREQ_MASK, bclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_TX_BCLK_RATE,
ARIZONA_AIF1TX_BCPF_MASK, lrclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RX_BCLK_RATE,
ARIZONA_AIF1RX_BCPF_MASK, lrclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_1,
ARIZONA_AIF1TX_WL_MASK |
ARIZONA_AIF1TX_SLOT_LEN_MASK, frame);
snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_2,
ARIZONA_AIF1RX_WL_MASK |
ARIZONA_AIF1RX_SLOT_LEN_MASK, frame);
// HLL will add this in
//ret=wm2000_check_poll();
//printk("Arizona: hw params start 1\n");
return 0; //ret;
}
static int arizona_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1];
int base = dai->driver->base;
const int *rates;
int i;
int bclk, lrclk, wl, frame, sr_val;
if (params_rate(params) % 8000)
rates = &arizona_44k1_bclk_rates[0];
else
rates = &arizona_48k_bclk_rates[0];
for (i = 0; i < ARRAY_SIZE(arizona_44k1_bclk_rates); i++) {
if (rates[i] >= snd_soc_params_to_bclk(params) &&
rates[i] % params_rate(params) == 0) {
bclk = i;
break;
}
}
if (i == ARRAY_SIZE(arizona_44k1_bclk_rates)) {
arizona_aif_err(dai, "Unsupported sample rate %dHz\n",
params_rate(params));
return -EINVAL;
}
for (i = 0; i < ARRAY_SIZE(arizona_sr_vals); i++)
if (arizona_sr_vals[i] == params_rate(params))
break;
if (i == ARRAY_SIZE(arizona_sr_vals)) {
arizona_aif_err(dai, "Unsupported sample rate %dHz\n",
params_rate(params));
return -EINVAL;
}
sr_val = i;
lrclk = snd_soc_params_to_bclk(params) / params_rate(params);
arizona_aif_dbg(dai, "BCLK %dHz LRCLK %dHz\n",
rates[bclk], rates[bclk] / lrclk);
wl = snd_pcm_format_width(params_format(params));
frame = wl << ARIZONA_AIF1TX_WL_SHIFT | wl;
/*
* We will need to be more flexible than this in future,
* currently we use a single sample rate for SYSCLK.
*/
switch (dai_priv->clk) {
case ARIZONA_CLK_SYSCLK:
snd_soc_update_bits(codec, ARIZONA_SAMPLE_RATE_1,
ARIZONA_SAMPLE_RATE_1_MASK, sr_val);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
ARIZONA_AIF1_RATE_MASK, 0);
break;
case ARIZONA_CLK_ASYNCCLK:
snd_soc_update_bits(codec, ARIZONA_ASYNC_SAMPLE_RATE_1,
ARIZONA_ASYNC_SAMPLE_RATE_MASK, sr_val);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
ARIZONA_AIF1_RATE_MASK, 8);
break;
default:
arizona_aif_err(dai, "Invalid clock %d\n", dai_priv->clk);
return -EINVAL;
}
snd_soc_update_bits(codec, base + ARIZONA_AIF_BCLK_CTRL,
ARIZONA_AIF1_BCLK_FREQ_MASK, bclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_TX_BCLK_RATE,
ARIZONA_AIF1TX_BCPF_MASK, lrclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_RX_BCLK_RATE,
ARIZONA_AIF1RX_BCPF_MASK, lrclk);
snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_1,
ARIZONA_AIF1TX_WL_MASK |
ARIZONA_AIF1TX_SLOT_LEN_MASK, frame);
snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_2,
ARIZONA_AIF1RX_WL_MASK |
ARIZONA_AIF1RX_SLOT_LEN_MASK, frame);
return 0;
}
static int wm8983_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
int i;
struct snd_soc_component *component = dai->component;
struct wm8983_priv *wm8983 = snd_soc_component_get_drvdata(component);
u16 blen, srate_idx;
u32 tmp;
int srate_best;
int ret;
ret = snd_soc_params_to_bclk(params);
if (ret < 0) {
dev_err(component->dev, "Failed to convert params to bclk: %d\n", ret);
return ret;
}
wm8983->bclk = ret;
switch (params_width(params)) {
case 16:
blen = 0x0;
break;
case 20:
blen = 0x1;
break;
case 24:
blen = 0x2;
break;
case 32:
blen = 0x3;
break;
default:
dev_err(dai->dev, "Unsupported word length %u\n",
params_width(params));
return -EINVAL;
}
snd_soc_component_update_bits(component, WM8983_AUDIO_INTERFACE,
WM8983_WL_MASK, blen << WM8983_WL_SHIFT);
/*
* match to the nearest possible sample rate and rely
* on the array index to configure the SR register
*/
srate_idx = 0;
srate_best = abs(srates[0] - params_rate(params));
for (i = 1; i < ARRAY_SIZE(srates); ++i) {
if (abs(srates[i] - params_rate(params)) >= srate_best)
continue;
srate_idx = i;
srate_best = abs(srates[i] - params_rate(params));
}
dev_dbg(dai->dev, "Selected SRATE = %d\n", srates[srate_idx]);
snd_soc_component_update_bits(component, WM8983_ADDITIONAL_CONTROL,
WM8983_SR_MASK, srate_idx << WM8983_SR_SHIFT);
dev_dbg(dai->dev, "Target BCLK = %uHz\n", wm8983->bclk);
dev_dbg(dai->dev, "SYSCLK = %uHz\n", wm8983->sysclk);
for (i = 0; i < ARRAY_SIZE(fs_ratios); ++i) {
if (wm8983->sysclk / params_rate(params)
== fs_ratios[i].ratio)
break;
}
if (i == ARRAY_SIZE(fs_ratios)) {
dev_err(dai->dev, "Unable to configure MCLK ratio %u/%u\n",
wm8983->sysclk, params_rate(params));
return -EINVAL;
}
dev_dbg(dai->dev, "MCLK ratio = %dfs\n", fs_ratios[i].ratio);
snd_soc_component_update_bits(component, WM8983_CLOCK_GEN_CONTROL,
WM8983_MCLKDIV_MASK, i << WM8983_MCLKDIV_SHIFT);
/* select the appropriate bclk divider */
tmp = (wm8983->sysclk / fs_ratios[i].div) * 10;
for (i = 0; i < ARRAY_SIZE(bclk_divs); ++i) {
if (wm8983->bclk == tmp / bclk_divs[i])
break;
}
if (i == ARRAY_SIZE(bclk_divs)) {
dev_err(dai->dev, "No matching BCLK divider found\n");
return -EINVAL;
}
dev_dbg(dai->dev, "BCLK div = %d\n", i);
snd_soc_component_update_bits(component, WM8983_CLOCK_GEN_CONTROL,
WM8983_BCLKDIV_MASK, i << WM8983_BCLKDIV_SHIFT);
return 0;
}