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ASoC: samsung: Hook up AIF2 to the CODEC on Littlemill
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Connect the WM1250-EV1 baseband simulator on Littlemill systems up to
the CODEC AIF2 using the new CODEC<->CODEC link support, allowing a wider
range of use cases to be represented.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Mark Brown committed Apr 18, 2012
1 parent 8c5b842 commit 0cbe4b3
Showing 1 changed file with 70 additions and 12 deletions.
82 changes: 70 additions & 12 deletions sound/soc/samsung/littlemill.c
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Original file line number Diff line number Diff line change
Expand Up @@ -23,10 +23,10 @@ static int littlemill_set_bias_level(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level)
{
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
struct snd_soc_dai *aif1_dai = card->rtd[0].codec_dai;
int ret;

if (dapm->dev != codec_dai->dev)
if (dapm->dev != aif1_dai->dev)
return 0;

switch (level) {
Expand All @@ -36,15 +36,15 @@ static int littlemill_set_bias_level(struct snd_soc_card *card,
* then do so now, otherwise these are noops.
*/
if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
WM8994_FLL_SRC_MCLK2, 32768,
sample_rate * 512);
if (ret < 0) {
pr_err("Failed to start FLL: %d\n", ret);
return ret;
}

ret = snd_soc_dai_set_sysclk(codec_dai,
ret = snd_soc_dai_set_sysclk(aif1_dai,
WM8994_SYSCLK_FLL1,
sample_rate * 512,
SND_SOC_CLOCK_IN);
Expand All @@ -66,25 +66,58 @@ static int littlemill_set_bias_level_post(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level)
{
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
struct snd_soc_dai *aif1_dai = card->rtd[0].codec_dai;
struct snd_soc_dai *aif2_dai = card->rtd[1].cpu_dai;
int ret;

if (dapm->dev != codec_dai->dev)
if (dapm->dev != aif1_dai->dev)
return 0;

switch (level) {
case SND_SOC_BIAS_STANDBY:
ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK2,
ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
32768, SND_SOC_CLOCK_IN);
if (ret < 0) {
pr_err("Failed to switch away from FLL: %d\n", ret);
pr_err("Failed to switch away from FLL2: %d\n", ret);
return ret;
}

ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
0, 0, 0);
if (ret < 0) {
pr_err("Failed to stop FLL: %d\n", ret);
pr_err("Failed to stop FLL2: %d\n", ret);
return ret;
}

ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
32768, SND_SOC_CLOCK_IN);
if (ret < 0) {
pr_err("Failed to switch away from FLL1: %d\n", ret);
return ret;
}

ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
0, 0, 0);
if (ret < 0) {
pr_err("Failed to stop FLL1: %d\n", ret);
return ret;
}
break;

case SND_SOC_BIAS_PREPARE:
ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
WM8994_FLL_SRC_BCLK, 64 * 8000,
8000 * 256);
if (ret < 0) {
pr_err("Failed to start FLL: %d\n", ret);
return ret;
}

ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2,
8000 * 256,
SND_SOC_CLOCK_IN);
if (ret < 0) {
pr_err("Failed to set SYSCLK: %d\n", ret);
return ret;
}
break;
Expand Down Expand Up @@ -131,6 +164,14 @@ static struct snd_soc_ops littlemill_ops = {
.hw_params = littlemill_hw_params,
};

static const struct snd_soc_pcm_stream baseband_params = {
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rate_min = 8000,
.rate_max = 8000,
.channels_min = 2,
.channels_max = 2,
};

static struct snd_soc_dai_link littlemill_dai[] = {
{
.name = "CPU",
Expand All @@ -143,6 +184,17 @@ static struct snd_soc_dai_link littlemill_dai[] = {
| SND_SOC_DAIFMT_CBM_CFM,
.ops = &littlemill_ops,
},
{
.name = "Baseband",
.stream_name = "Baseband",
.cpu_dai_name = "wm8994-aif2",
.codec_dai_name = "wm1250-ev1",
.codec_name = "wm1250-ev1.1-0027",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM,
.ignore_suspend = 1,
.params = &baseband_params,
},
};

static struct snd_soc_dapm_widget widgets[] = {
Expand All @@ -169,10 +221,16 @@ static struct snd_soc_jack littlemill_headset;
static int littlemill_late_probe(struct snd_soc_card *card)
{
struct snd_soc_codec *codec = card->rtd[0].codec;
struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
struct snd_soc_dai *aif1_dai = card->rtd[0].codec_dai;
struct snd_soc_dai *aif2_dai = card->rtd[1].cpu_dai;
int ret;

ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK2,
ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
32768, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;

ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
32768, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
Expand Down

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