ASoC: Blackfin: ADAU1X81 eval board support

This patch adds a ASoC machine driver to support the EVAL-ADAU1X81 board
connected to a Analog Devices BF5XX evaluation board.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 130 insertions, 0 deletions

diff --git a/sound/soc/blackfin/bfin-eval-adau1x81.c b/sound/soc/blackfin/bfin-eval-adau1x81.c
new file mode 100644
index 000000000000..5c380f6aed1a
--- /dev/null
+++ b/sound/soc/blackfin/bfin-eval-adau1x81.c
@@ -0,0 +1,130 @@
+/*
+ * Machine driver for EVAL-ADAU1x81 on Analog Devices bfin
+ * evaluation boards.
+ *
+ * Copyright 2011-2014 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 <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/adau17x1.h"
+
+static const struct snd_soc_dapm_widget bfin_eval_adau1x81_dapm_widgets[] = {
+        SND_SOC_DAPM_LINE("Stereo In", NULL),
+        SND_SOC_DAPM_LINE("Beep", NULL),
+
+        SND_SOC_DAPM_SPK("Speaker", NULL),
+        SND_SOC_DAPM_HP("Headphone", NULL),
+};
+
+static const struct snd_soc_dapm_route bfin_eval_adau1x81_dapm_routes[] = {
+        { "BEEP", NULL, "Beep" },
+        { "LMIC", NULL, "Stereo In" },
+        { "LMIC", NULL, "Stereo In" },
+
+        { "Headphone", NULL, "AOUTL" },
+        { "Headphone", NULL, "AOUTR" },
+        { "Speaker", NULL, "SP" },
+};
+
+static int bfin_eval_adau1x81_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->codec_dai;
+        int pll_rate;
+        int ret;
+
+        switch (params_rate(params)) {
+        case 48000:
+        case 8000:
+        case 12000:
+        case 16000:
+        case 24000:
+        case 32000:
+        case 96000:
+                pll_rate = 48000 * 1024;
+                break;
+        case 44100:
+        case 7350:
+        case 11025:
+        case 14700:
+        case 22050:
+        case 29400:
+        case 88200:
+                pll_rate = 44100 * 1024;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL,
+                        ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate,
+                        SND_SOC_CLOCK_IN);
+
+        return ret;
+}
+
+static const struct snd_soc_ops bfin_eval_adau1x81_ops = {
+        .hw_params = bfin_eval_adau1x81_hw_params,
+};
+
+static struct snd_soc_dai_link bfin_eval_adau1x81_dai = {
+        .name = "adau1x81",
+        .stream_name = "adau1x81",
+        .cpu_dai_name = "bfin-i2s.0",
+        .codec_dai_name = "adau-hifi",
+        .platform_name = "bfin-i2s-pcm-audio",
+        .codec_name = "adau1781.0-0038",
+        .ops = &bfin_eval_adau1x81_ops,
+        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                SND_SOC_DAIFMT_CBM_CFM,
+};
+
+static struct snd_soc_card bfin_eval_adau1x81 = {
+        .name = "bfin-eval-adau1x81",
+        .driver_name = "eval-adau1x81",
+        .dai_link = &bfin_eval_adau1x81_dai,
+        .num_links = 1,
+
+        .dapm_widgets = bfin_eval_adau1x81_dapm_widgets,
+        .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x81_dapm_widgets),
+        .dapm_routes = bfin_eval_adau1x81_dapm_routes,
+        .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x81_dapm_routes),
+        .fully_routed = true,
+};
+
+static int bfin_eval_adau1x81_probe(struct platform_device *pdev)
+{
+        bfin_eval_adau1x81.dev = &pdev->dev;
+
+        return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x81);
+}
+
+static struct platform_driver bfin_eval_adau1x81_driver = {
+        .driver = {
+                .name = "bfin-eval-adau1x81",
+                .owner = THIS_MODULE,
+                .pm = &snd_soc_pm_ops,
+        },
+        .probe = bfin_eval_adau1x81_probe,
+};
+module_platform_driver(bfin_eval_adau1x81_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ALSA SoC bfin adau1x81 driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bfin-eval-adau1x81");