ASoC: Blackfin: ADAU1X61 eval board support

This patch adds a ASoC machine driver to support the EVAL-ADAU1X61 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>

3 files changed, 157 insertions, 0 deletions

diff --git a/sound/soc/blackfin/Kconfig b/sound/soc/blackfin/Kconfig
index 6347d5910138..8c3a87bb96dc 100644
--- a/sound/soc/blackfin/Kconfig
+++ b/sound/soc/blackfin/Kconfig
@@ -43,6 +43,19 @@ config SND_SOC_BFIN_EVAL_ADAU1373
           Note: This driver assumes that first ADAU1373 DAI is connected to the
           first SPORT port on the BF5XX board.
 
+config SND_SOC_BFIN_EVAL_ADAU1X61
+        tristate "Support for the EVAL-ADAU1X61 board on Blackfin eval boards"
+        depends on SND_BF5XX_I2S && I2C
+        select SND_BF5XX_SOC_I2S
+        select SND_SOC_ADAU1761_I2C
+        help
+          Say Y if you want to add support for the Analog Devices EVAL-ADAU1X61
+          board connected to one of the Blackfin evaluation boards like the
+          BF5XX-STAMP or BF5XX-EZKIT.
+
+          Note: This driver assumes that the ADAU1X61 is connected to the
+          first SPORT port on the BF5XX board.
+
 config SND_SOC_BFIN_EVAL_ADAV80X
         tristate "Support for the EVAL-ADAV80X boards on Blackfin eval boards"
         depends on SND_BF5XX_I2S && SND_SOC_I2C_AND_SPI
diff --git a/sound/soc/blackfin/Makefile b/sound/soc/blackfin/Makefile
index ad0a6e99bc5d..91eb0e7edff5 100644
--- a/sound/soc/blackfin/Makefile
+++ b/sound/soc/blackfin/Makefile
@@ -22,6 +22,7 @@ snd-ssm2602-objs := bf5xx-ssm2602.o
 snd-ad73311-objs := bf5xx-ad73311.o
 snd-ad193x-objs := bf5xx-ad193x.o
 snd-soc-bfin-eval-adau1373-objs := bfin-eval-adau1373.o
+snd-soc-bfin-eval-adau1x61-objs := bfin-eval-adau1x61.o
 snd-soc-bfin-eval-adau1701-objs := bfin-eval-adau1701.o
 snd-soc-bfin-eval-adav80x-objs := bfin-eval-adav80x.o
 
@@ -31,5 +32,6 @@ obj-$(CONFIG_SND_BF5XX_SOC_SSM2602) += snd-ssm2602.o
 obj-$(CONFIG_SND_BF5XX_SOC_AD73311) += snd-ad73311.o
 obj-$(CONFIG_SND_BF5XX_SOC_AD193X) += snd-ad193x.o
 obj-$(CONFIG_SND_SOC_BFIN_EVAL_ADAU1373) += snd-soc-bfin-eval-adau1373.o
+obj-$(CONFIG_SND_SOC_BFIN_EVAL_ADAU1X61) += snd-soc-bfin-eval-adau1x61.o
 obj-$(CONFIG_SND_SOC_BFIN_EVAL_ADAU1701) += snd-soc-bfin-eval-adau1701.o
 obj-$(CONFIG_SND_SOC_BFIN_EVAL_ADAV80X) += snd-soc-bfin-eval-adav80x.o
diff --git a/sound/soc/blackfin/bfin-eval-adau1x61.c b/sound/soc/blackfin/bfin-eval-adau1x61.c
new file mode 100644
index 000000000000..3011906f9d3b
--- /dev/null
+++ b/sound/soc/blackfin/bfin-eval-adau1x61.c
@@ -0,0 +1,142 @@
+/*
+ * Machine driver for EVAL-ADAU1x61MINIZ 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_adau1x61_dapm_widgets[] = {
+        SND_SOC_DAPM_LINE("In 1", NULL),
+        SND_SOC_DAPM_LINE("In 2", NULL),
+        SND_SOC_DAPM_LINE("In 3-4", NULL),
+
+        SND_SOC_DAPM_LINE("Diff Out L", NULL),
+        SND_SOC_DAPM_LINE("Diff Out R", NULL),
+        SND_SOC_DAPM_LINE("Stereo Out", NULL),
+        SND_SOC_DAPM_HP("Capless HP Out", NULL),
+};
+
+static const struct snd_soc_dapm_route bfin_eval_adau1x61_dapm_routes[] = {
+        { "LAUX", NULL, "In 3-4" },
+        { "RAUX", NULL, "In 3-4" },
+        { "LINP", NULL, "In 1" },
+        { "LINN", NULL, "In 1"},
+        { "RINP", NULL, "In 2" },
+        { "RINN", NULL, "In 2" },
+
+        { "In 1", NULL, "MICBIAS" },
+        { "In 2", NULL, "MICBIAS" },
+
+        { "Capless HP Out", NULL, "LHP" },
+        { "Capless HP Out", NULL, "RHP" },
+        { "Diff Out L", NULL, "LOUT" },
+        { "Diff Out R", NULL, "ROUT" },
+        { "Stereo Out", NULL, "LOUT" },
+        { "Stereo Out", NULL, "ROUT" },
+};
+
+static int bfin_eval_adau1x61_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_adau1x61_ops = {
+        .hw_params = bfin_eval_adau1x61_hw_params,
+};
+
+static struct snd_soc_dai_link bfin_eval_adau1x61_dai = {
+        .name = "adau1x61",
+        .stream_name = "adau1x61",
+        .cpu_dai_name = "bfin-i2s.0",
+        .codec_dai_name = "adau-hifi",
+        .platform_name = "bfin-i2s-pcm-audio",
+        .codec_name = "adau1761.0-0038",
+        .ops = &bfin_eval_adau1x61_ops,
+        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                SND_SOC_DAIFMT_CBM_CFM,
+};
+
+static struct snd_soc_card bfin_eval_adau1x61 = {
+        .name = "bfin-eval-adau1x61",
+        .driver_name = "eval-adau1x61",
+        .dai_link = &bfin_eval_adau1x61_dai,
+        .num_links = 1,
+
+        .dapm_widgets = bfin_eval_adau1x61_dapm_widgets,
+        .num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x61_dapm_widgets),
+        .dapm_routes = bfin_eval_adau1x61_dapm_routes,
+        .num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x61_dapm_routes),
+        .fully_routed = true,
+};
+
+static int bfin_eval_adau1x61_probe(struct platform_device *pdev)
+{
+        bfin_eval_adau1x61.dev = &pdev->dev;
+
+        return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x61);
+}
+
+static struct platform_driver bfin_eval_adau1x61_driver = {
+        .driver = {
+                .name = "bfin-eval-adau1x61",
+                .owner = THIS_MODULE,
+                .pm = &snd_soc_pm_ops,
+        },
+        .probe = bfin_eval_adau1x61_probe,
+};
+module_platform_driver(bfin_eval_adau1x61_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ALSA SoC bfin adau1x61 driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bfin-eval-adau1x61");