#define MCLK_RATE 12000000
-static struct clk *mclk;
-
-static int at91sam9g20ek_startup(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
- struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
- int ret;
-
- ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
- MCLK_RATE, SND_SOC_CLOCK_IN);
- if (ret < 0) {
- clk_disable(mclk);
- return ret;
- }
-
- return 0;
-}
-
-static void at91sam9g20ek_shutdown(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
+/*
+ * As shipped the board does not have inputs. However, it is relatively
+ * straightforward to modify the board to hook them up so support is left
+ * in the driver.
+ */
+#undef ENABLE_MIC_INPUT
- dev_dbg(rtd->socdev->dev, "shutdown");
-}
+static struct clk *mclk;
static int at91sam9g20ek_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;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- struct atmel_ssc_info *ssc_p = cpu_dai->private_data;
- struct ssc_device *ssc = ssc_p->ssc;
int ret;
- unsigned int rate;
- int cmr_div, period;
-
- if (ssc == NULL) {
- printk(KERN_INFO "at91sam9g20ek_hw_params: ssc is NULL!\n");
- return -EINVAL;
- }
-
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
- if (ret < 0)
- return ret;
-
- /*
- * The SSC clock dividers depend on the sample rate. The CMR.DIV
- * field divides the system master clock MCK to drive the SSC TK
- * signal which provides the codec BCLK. The TCMR.PERIOD and
- * RCMR.PERIOD fields further divide the BCLK signal to drive
- * the SSC TF and RF signals which provide the codec DACLRC and
- * ADCLRC clocks.
- *
- * The dividers were determined through trial and error, where a
- * CMR.DIV value is chosen such that the resulting BCLK value is
- * divisible, or almost divisible, by (2 * sample rate), and then
- * the TCMR.PERIOD or RCMR.PERIOD is BCLK / (2 * sample rate) - 1.
- */
- rate = params_rate(params);
-
- switch (rate) {
- case 8000:
- cmr_div = 55; /* BCLK = 133MHz/(2*55) = 1.209MHz */
- period = 74; /* LRC = BCLK/(2*(74+1)) ~= 8060,6Hz */
- break;
- case 11025:
- cmr_div = 67; /* BCLK = 133MHz/(2*60) = 1.108MHz */
- period = 45; /* LRC = BCLK/(2*(49+1)) = 11083,3Hz */
- break;
- case 16000:
- cmr_div = 63; /* BCLK = 133MHz/(2*63) = 1.055MHz */
- period = 32; /* LRC = BCLK/(2*(32+1)) = 15993,2Hz */
- break;
- case 22050:
- cmr_div = 52; /* BCLK = 133MHz/(2*52) = 1.278MHz */
- period = 28; /* LRC = BCLK/(2*(28+1)) = 22049Hz */
- break;
- case 32000:
- cmr_div = 66; /* BCLK = 133MHz/(2*66) = 1.007MHz */
- period = 15; /* LRC = BCLK/(2*(15+1)) = 31486,742Hz */
- break;
- case 44100:
- cmr_div = 29; /* BCLK = 133MHz/(2*29) = 2.293MHz */
- period = 25; /* LRC = BCLK/(2*(25+1)) = 44098Hz */
- break;
- case 48000:
- cmr_div = 33; /* BCLK = 133MHz/(2*33) = 2.015MHz */
- period = 20; /* LRC = BCLK/(2*(20+1)) = 47979,79Hz */
- break;
- case 88200:
- cmr_div = 29; /* BCLK = 133MHz/(2*29) = 2.293MHz */
- period = 12; /* LRC = BCLK/(2*(12+1)) = 88196Hz */
- break;
- case 96000:
- cmr_div = 23; /* BCLK = 133MHz/(2*23) = 2.891MHz */
- period = 14; /* LRC = BCLK/(2*(14+1)) = 96376Hz */
- break;
- default:
- printk(KERN_WARNING "unsupported rate %d"
- " on at91sam9g20ek board\n", rate);
- return -EINVAL;
- }
-
- /* set the MCK divider for BCLK */
- ret = snd_soc_dai_set_clkdiv(cpu_dai, ATMEL_SSC_CMR_DIV, cmr_div);
- if (ret < 0)
- return ret;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- /* set the BCLK divider for DACLRC */
- ret = snd_soc_dai_set_clkdiv(cpu_dai,
- ATMEL_SSC_TCMR_PERIOD, period);
- } else {
- /* set the BCLK divider for ADCLRC */
- ret = snd_soc_dai_set_clkdiv(cpu_dai,
- ATMEL_SSC_RCMR_PERIOD, period);
- }
+ SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
}
static struct snd_soc_ops at91sam9g20ek_ops = {
- .startup = at91sam9g20ek_startup,
.hw_params = at91sam9g20ek_hw_params,
- .shutdown = at91sam9g20ek_shutdown,
};
static int at91sam9g20ek_set_bias_level(struct snd_soc_card *card,
*/
static int at91sam9g20ek_wm8731_init(struct snd_soc_codec *codec)
{
+ struct snd_soc_dai *codec_dai = &codec->dai[0];
+ int ret;
+
printk(KERN_DEBUG
"at91sam9g20ek_wm8731 "
": at91sam9g20ek_wm8731_init() called\n");
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
+ MCLK_RATE, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ printk(KERN_ERR "Failed to set WM8731 SYSCLK: %d\n", ret);
+ return ret;
+ }
+
/* Add specific widgets */
snd_soc_dapm_new_controls(codec, at91sam9g20ek_dapm_widgets,
ARRAY_SIZE(at91sam9g20ek_dapm_widgets));
snd_soc_dapm_nc_pin(codec, "RLINEIN");
snd_soc_dapm_nc_pin(codec, "LLINEIN");
- /* always connected */
+#ifdef ENABLE_MIC_INPUT
snd_soc_dapm_enable_pin(codec, "Int Mic");
+#else
+ snd_soc_dapm_nc_pin(codec, "Int Mic");
+#endif
+
+ /* always connected */
snd_soc_dapm_enable_pin(codec, "Ext Spk");
snd_soc_dapm_sync(codec);
git.openpandora.org / pandora-kernel.git / blobdiff