ASoC: samsung: Hook up AIF2 to the CODEC on Littlemill

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>

diff --git a/sound/soc/samsung/littlemill.c b/sound/soc/samsung/littlemill.c
index e741685..fd5ac47 100644 (file)
--- a/sound/soc/samsung/littlemill.c
+++ b/sound/soc/samsung/littlemill.c
@@ -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) {
@@ -36,7 +36,7 @@ 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) {
@@ -44,7 +44,7 @@ static int littlemill_set_bias_level(struct snd_soc_card *card,
                                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);
@@ -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;
@@ -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",
@@ -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[] = {
@@ -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;