struct ak4613_priv {
struct mutex lock;
const struct ak4613_interface *iface;
+ struct snd_pcm_hw_constraint_list constraint;
+ unsigned int sysclk;
unsigned int fmt;
u8 oc;
#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
static const struct ak4613_interface ak4613_iface[] = {
/* capture */ /* playback */
- [0] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(16, RIGHT_J) },
- [1] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(20, RIGHT_J) },
- [2] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, RIGHT_J) },
+ /* [0] - [2] are not supported */
[3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
[4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
};
mutex_unlock(&priv->lock);
}
+static void ak4613_hw_constraints(struct ak4613_priv *priv,
+ struct snd_pcm_runtime *runtime)
+{
+ static const unsigned int ak4613_rates[] = {
+ 32000,
+ 44100,
+ 48000,
+ 64000,
+ 88200,
+ 96000,
+ 176400,
+ 192000,
+ };
+ struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
+ unsigned int fs;
+ int i;
+
+ constraint->list = ak4613_rates;
+ constraint->mask = 0;
+ constraint->count = 0;
+
+ /*
+ * Slave Mode
+ * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
+ * Double: [64kHz, 96kHz] : 256fs
+ * Quad : [128kHz,192kHz]: 128fs
+ *
+ * Master mode
+ * Normal: [32kHz, 48kHz] : 256fs or 512fs
+ * Double: [64kHz, 96kHz] : 256fs
+ * Quad : [128kHz,192kHz]: 128fs
+ */
+ for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
+ /* minimum fs on each range */
+ fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
+
+ if (priv->sysclk >= ak4613_rates[i] * fs)
+ constraint->count = i + 1;
+ }
+
+ snd_pcm_hw_constraint_list(runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE, constraint);
+}
+
+static int ak4613_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
+
+ priv->cnt++;
+
+ ak4613_hw_constraints(priv, substream->runtime);
+
+ return 0;
+}
+
+static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
+
+ priv->sysclk = freq;
+
+ return 0;
+}
+
static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
switch (fmt) {
- case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
case SND_SOC_DAIFMT_I2S:
priv->fmt = fmt;
-
break;
default:
return -EINVAL;
if (fmts->fmt != fmt)
return false;
- if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
- if (fmts->width != width)
- return false;
- } else {
- if (fmts->width < width)
- return false;
- }
+ if (fmts->width != width)
+ return false;
return true;
}
case 48000:
ctrl2 = DFS_NORMAL_SPEED;
break;
+ case 64000:
case 88200:
case 96000:
ctrl2 = DFS_DOUBLE_SPEED;
if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
iface = priv->iface;
} else {
- for (i = ARRAY_SIZE(ak4613_iface); i >= 0; i--) {
+ for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
if (!ak4613_dai_fmt_matching(ak4613_iface + i,
is_play,
fmt, width))
if ((priv->iface == NULL) ||
(priv->iface == iface)) {
priv->iface = iface;
- priv->cnt++;
ret = 0;
}
mutex_unlock(&priv->lock);
}
static const struct snd_soc_dai_ops ak4613_dai_ops = {
+ .startup = ak4613_dai_startup,
.shutdown = ak4613_dai_shutdown,
+ .set_sysclk = ak4613_dai_set_sysclk,
.set_fmt = ak4613_dai_set_fmt,
.hw_params = ak4613_dai_hw_params,
};
SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_176400 |\
SNDRV_PCM_RATE_192000)
-#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S16_LE |\
- SNDRV_PCM_FMTBIT_S24_LE)
+#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_driver ak4613_dai = {
.name = "ak4613-hifi",
priv->iface = NULL;
priv->cnt = 0;
+ priv->sysclk = 0;
mutex_init(&priv->lock);