ASoC: Blackfin: ADAU1373 eval board support

Add a machine driver to support the EVAL-ADAU1373 board connected to a
Analog Devices BF5XX evaluation board.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 202 insertions, 0 deletions

diff --git a/sound/soc/blackfin/bfin-eval-adau1373.c b/sound/soc/blackfin/bfin-eval-adau1373.c
new file mode 100644
index 000000000000..8df2a3b0cb36
--- /dev/null
+++ b/sound/soc/blackfin/bfin-eval-adau1373.c
@@ -0,0 +1,202 @@
+/*
+ * Machine driver for EVAL-ADAU1373 on Analog Devices bfin
+ * evaluation boards.
+ *
+ * Copyright 2011 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/adau1373.h"
+
+static const struct snd_soc_dapm_widget bfin_eval_adau1373_dapm_widgets[] = {
+        SND_SOC_DAPM_LINE("Line In1", NULL),
+        SND_SOC_DAPM_LINE("Line In2", NULL),
+        SND_SOC_DAPM_LINE("Line In3", NULL),
+        SND_SOC_DAPM_LINE("Line In4", NULL),
+
+        SND_SOC_DAPM_LINE("Line Out1", NULL),
+        SND_SOC_DAPM_LINE("Line Out2", NULL),
+        SND_SOC_DAPM_LINE("Stereo Out", NULL),
+        SND_SOC_DAPM_HP("Headphone", NULL),
+        SND_SOC_DAPM_HP("Earpiece", NULL),
+        SND_SOC_DAPM_SPK("Speaker", NULL),
+};
+
+static const struct snd_soc_dapm_route bfin_eval_adau1373_dapm_routes[] = {
+        { "AIN1L", NULL, "Line In1" },
+        { "AIN1R", NULL, "Line In1" },
+        { "AIN2L", NULL, "Line In2" },
+        { "AIN2R", NULL, "Line In2" },
+        { "AIN3L", NULL, "Line In3" },
+        { "AIN3R", NULL, "Line In3" },
+        { "AIN4L", NULL, "Line In4" },
+        { "AIN4R", NULL, "Line In4" },
+
+        /* MICBIAS can be connected via a jumper to the line-in jack, since w
+           don't know which one is going to be used, just power both. */
+        { "Line In1", NULL, "MICBIAS1" },
+        { "Line In2", NULL, "MICBIAS1" },
+        { "Line In3", NULL, "MICBIAS1" },
+        { "Line In4", NULL, "MICBIAS1" },
+        { "Line In1", NULL, "MICBIAS2" },
+        { "Line In2", NULL, "MICBIAS2" },
+        { "Line In3", NULL, "MICBIAS2" },
+        { "Line In4", NULL, "MICBIAS2" },
+
+        { "Line Out1", NULL, "LOUT1L" },
+        { "Line Out1", NULL, "LOUT1R" },
+        { "Line Out2", NULL, "LOUT2L" },
+        { "Line Out2", NULL, "LOUT2R" },
+        { "Headphone", NULL, "HPL" },
+        { "Headphone", NULL, "HPR" },
+        { "Earpiece", NULL, "EP" },
+        { "Speaker", NULL, "SPKL" },
+        { "Stereo Out", NULL, "SPKR" },
+};
+
+static int bfin_eval_adau1373_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 *cpu_dai = rtd->cpu_dai;
+        struct snd_soc_dai *codec_dai = rtd->codec_dai;
+        int ret;
+        int pll_rate;
+
+        ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+                        SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+                        SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+        if (ret)
+                return ret;
+
+        switch (params_rate(params)) {
+        case 48000:
+        case 8000:
+        case 12000:
+        case 16000:
+        case 24000:
+        case 32000:
+                pll_rate = 48000 * 1024;
+                break;
+        case 44100:
+        case 7350:
+        case 11025:
+        case 14700:
+        case 22050:
+        case 29400:
+                pll_rate = 44100 * 1024;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
+                        ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
+                        SND_SOC_CLOCK_IN);
+
+        return ret;
+}
+
+static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd)
+{
+        struct snd_soc_dai *codec_dai = rtd->codec_dai;
+        unsigned int pll_rate = 48000 * 1024;
+        int ret;
+
+        ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
+                        ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
+                        SND_SOC_CLOCK_IN);
+
+        return ret;
+}
+static struct snd_soc_ops bfin_eval_adau1373_ops = {
+        .hw_params = bfin_eval_adau1373_hw_params,
+};
+
+static struct snd_soc_dai_link bfin_eval_adau1373_dai = {
+        .name = "adau1373",
+        .stream_name = "adau1373",
+        .cpu_dai_name = "bfin-i2s.0",
+        .codec_dai_name = "adau1373-aif1",
+        .platform_name = "bfin-i2s-pcm-audio",
+        .codec_name = "adau1373.0-001a",
+        .ops = &bfin_eval_adau1373_ops,
+        .init = bfin_eval_adau1373_codec_init,
+};
+
+static struct snd_soc_card bfin_eval_adau1373 = {
+        .name = "bfin-eval-adau1373",
+        .dai_link = &bfin_eval_adau1373_dai,
+        .num_links = 1,
+
+        .dapm_widgets           = bfin_eval_adau1373_dapm_widgets,
+        .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets),
+        .dapm_routes            = bfin_eval_adau1373_dapm_routes,
+        .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adau1373_dapm_routes),
+};
+
+static int bfin_eval_adau1373_probe(struct platform_device *pdev)
+{
+        struct snd_soc_card *card = &bfin_eval_adau1373;
+
+        card->dev = &pdev->dev;
+
+        return snd_soc_register_card(&bfin_eval_adau1373);
+}
+
+static int __devexit bfin_eval_adau1373_remove(struct platform_device *pdev)
+{
+        struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+        snd_soc_unregister_card(card);
+
+        return 0;
+}
+
+static struct platform_driver bfin_eval_adau1373_driver = {
+        .driver = {
+                .name = "bfin-eval-adau1373",
+                .owner = THIS_MODULE,
+                .pm = &snd_soc_pm_ops,
+        },
+        .probe = bfin_eval_adau1373_probe,
+        .remove = __devexit_p(bfin_eval_adau1373_remove),
+};
+
+static int __init bfin_eval_adau1373_init(void)
+{
+        return platform_driver_register(&bfin_eval_adau1373_driver);
+}
+module_init(bfin_eval_adau1373_init);
+
+static void __exit bfin_eval_adau1373_exit(void)
+{
+        platform_driver_unregister(&bfin_eval_adau1373_driver);
+}
+module_exit(bfin_eval_adau1373_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bfin-eval-adau1373");