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>

diff --git a/sound/soc/blackfin/Kconfig b/sound/soc/blackfin/Kconfig
index 8c3a87bb96dc4772fbc5e824dbd1777a9b723e06..6410aa2cc2cfe34a08bc7d8574a5f7cedb375d4f 100644 (file)
--- a/sound/soc/blackfin/Kconfig
+++ b/sound/soc/blackfin/Kconfig
@@ -56,6 +56,19 @@ config SND_SOC_BFIN_EVAL_ADAU1X61
          Note: This driver assumes that the ADAU1X61 is connected to the
          first SPORT port on the BF5XX board.
 
+config SND_SOC_BFIN_EVAL_ADAU1X81
+       tristate "Support for the EVAL-ADAU1X81 boards on Blackfin eval boards"
+       depends on SND_BF5XX_I2S && I2C
+       select SND_BF5XX_SOC_I2S
+       select SND_SOC_ADAU1781_I2C
+       help
+         Say Y if you want to add support for the Analog Devices EVAL-ADAU1X81
+         board connected to one of the Blackfin evaluation boards like the
+         BF5XX-STAMP or BF5XX-EZKIT.
+
+         Note: This driver assumes that the ADAU1X81 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 91eb0e7edff52f098ee5cbf9aa393fd8bc6f73b6..f21e948b2e9b0223128df261fd5d880afdb13642 100644 (file)
--- a/sound/soc/blackfin/Makefile
+++ b/sound/soc/blackfin/Makefile
@@ -23,6 +23,7 @@ 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-adau1x81-objs := bfin-eval-adau1x81.o
 snd-soc-bfin-eval-adau1701-objs := bfin-eval-adau1701.o
 snd-soc-bfin-eval-adav80x-objs := bfin-eval-adav80x.o
 
@@ -33,5 +34,6 @@ 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-$(CONFIG_SND_SOC_BFIN_EVAL_ADAU1X81) += snd-soc-bfin-eval-adau1x81.o
 obj-$(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-adau1x81.c b/sound/soc/blackfin/bfin-eval-adau1x81.c
new file mode 100644 (file)
index 0000000..5c380f6
--- /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");