ASoC: Add ADAU1701 codec driver
authorLars-Peter Clausen <lars@metafoo.de>
Mon, 13 Jun 2011 13:26:20 +0000 (15:26 +0200)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Thu, 16 Jun 2011 10:24:17 +0000 (11:24 +0100)
This patch adds support for the Analog Devices ADAU1701 SigmaDSP.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
sound/soc/codecs/Kconfig
sound/soc/codecs/Makefile
sound/soc/codecs/adau1701.c [new file with mode: 0644]
sound/soc/codecs/adau1701.h [new file with mode: 0644]

index 98175a096df2496da11822e6772d4f92420ca3bb..f745e557831ecf457cd4be0092f16bfbbbb827f4 100644 (file)
@@ -17,6 +17,7 @@ config SND_SOC_ALL_CODECS
        select SND_SOC_AD193X if SND_SOC_I2C_AND_SPI
        select SND_SOC_AD1980 if SND_SOC_AC97_BUS
        select SND_SOC_AD73311
+       select SND_SOC_ADAU1701 if I2C
        select SND_SOC_ADS117X
        select SND_SOC_AK4104 if SPI_MASTER
        select SND_SOC_AK4535 if I2C
@@ -130,7 +131,11 @@ config SND_SOC_AD1980
 
 config SND_SOC_AD73311
        tristate
-       
+
+config SND_SOC_ADAU1701
+       select SIGMA
+       tristate
+
 config SND_SOC_ADS117X
        tristate
 
index fd8558406ef002a71aea9a2521d60f6fdcd3c730..30a4c631aef42ade856c65db746b0aaa9a849f21 100644 (file)
@@ -4,6 +4,7 @@ snd-soc-ad1836-objs := ad1836.o
 snd-soc-ad193x-objs := ad193x.o
 snd-soc-ad1980-objs := ad1980.o
 snd-soc-ad73311-objs := ad73311.o
+snd-soc-adau1701-objs := adau1701.o
 snd-soc-ads117x-objs := ads117x.o
 snd-soc-ak4104-objs := ak4104.o
 snd-soc-ak4535-objs := ak4535.o
@@ -95,6 +96,7 @@ obj-$(CONFIG_SND_SOC_AD1836)  += snd-soc-ad1836.o
 obj-$(CONFIG_SND_SOC_AD193X)   += snd-soc-ad193x.o
 obj-$(CONFIG_SND_SOC_AD1980)   += snd-soc-ad1980.o
 obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o
+obj-$(CONFIG_SND_SOC_ADAU1701)  += snd-soc-adau1701.o
 obj-$(CONFIG_SND_SOC_ADS117X)  += snd-soc-ads117x.o
 obj-$(CONFIG_SND_SOC_AK4104)   += snd-soc-ak4104.o
 obj-$(CONFIG_SND_SOC_AK4535)   += snd-soc-ak4535.o
diff --git a/sound/soc/codecs/adau1701.c b/sound/soc/codecs/adau1701.c
new file mode 100644 (file)
index 0000000..6c01bb6
--- /dev/null
@@ -0,0 +1,548 @@
+/*
+ * Driver for ADAU1701 SigmaDSP processor
+ *
+ * Copyright 2011 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *     based on an inital version by Cliff Cai <cliff.cai@analog.com>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/sigma.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "adau1701.h"
+
+#define ADAU1701_DSPCTRL       0x1c
+#define ADAU1701_SEROCTL       0x1e
+#define ADAU1701_SERICTL       0x1f
+
+#define ADAU1701_AUXNPOW       0x22
+
+#define ADAU1701_OSCIPOW       0x26
+#define ADAU1701_DACSET                0x27
+
+#define ADAU1701_NUM_REGS      0x28
+
+#define ADAU1701_DSPCTRL_CR            (1 << 2)
+#define ADAU1701_DSPCTRL_DAM           (1 << 3)
+#define ADAU1701_DSPCTRL_ADM           (1 << 4)
+#define ADAU1701_DSPCTRL_SR_48         0x00
+#define ADAU1701_DSPCTRL_SR_96         0x01
+#define ADAU1701_DSPCTRL_SR_192                0x02
+#define ADAU1701_DSPCTRL_SR_MASK       0x03
+
+#define ADAU1701_SEROCTL_INV_LRCLK     0x2000
+#define ADAU1701_SEROCTL_INV_BCLK      0x1000
+#define ADAU1701_SEROCTL_MASTER                0x0800
+
+#define ADAU1701_SEROCTL_OBF16         0x0000
+#define ADAU1701_SEROCTL_OBF8          0x0200
+#define ADAU1701_SEROCTL_OBF4          0x0400
+#define ADAU1701_SEROCTL_OBF2          0x0600
+#define ADAU1701_SEROCTL_OBF_MASK      0x0600
+
+#define ADAU1701_SEROCTL_OLF1024       0x0000
+#define ADAU1701_SEROCTL_OLF512                0x0080
+#define ADAU1701_SEROCTL_OLF256                0x0100
+#define ADAU1701_SEROCTL_OLF_MASK      0x0180
+
+#define ADAU1701_SEROCTL_MSB_DEALY1    0x0000
+#define ADAU1701_SEROCTL_MSB_DEALY0    0x0004
+#define ADAU1701_SEROCTL_MSB_DEALY8    0x0008
+#define ADAU1701_SEROCTL_MSB_DEALY12   0x000c
+#define ADAU1701_SEROCTL_MSB_DEALY16   0x0010
+#define ADAU1701_SEROCTL_MSB_DEALY_MASK        0x001c
+
+#define ADAU1701_SEROCTL_WORD_LEN_24   0x0000
+#define ADAU1701_SEROCTL_WORD_LEN_20   0x0001
+#define ADAU1701_SEROCTL_WORD_LEN_16   0x0010
+#define ADAU1701_SEROCTL_WORD_LEN_MASK 0x0003
+
+#define ADAU1701_AUXNPOW_VBPD          0x40
+#define ADAU1701_AUXNPOW_VRPD          0x20
+
+#define ADAU1701_SERICTL_I2S           0
+#define ADAU1701_SERICTL_LEFTJ         1
+#define ADAU1701_SERICTL_TDM           2
+#define ADAU1701_SERICTL_RIGHTJ_24     3
+#define ADAU1701_SERICTL_RIGHTJ_20     4
+#define ADAU1701_SERICTL_RIGHTJ_18     5
+#define ADAU1701_SERICTL_RIGHTJ_16     6
+#define ADAU1701_SERICTL_MODE_MASK     7
+#define ADAU1701_SERICTL_INV_BCLK      BIT(3)
+#define ADAU1701_SERICTL_INV_LRCLK     BIT(4)
+
+#define ADAU1701_OSCIPOW_OPD           0x04
+#define ADAU1701_DACSET_DACINIT                1
+
+#define ADAU1701_FIRMWARE "adau1701.bin"
+
+struct adau1701 {
+       unsigned int dai_fmt;
+};
+
+static const struct snd_kcontrol_new adau1701_controls[] = {
+       SOC_SINGLE("Master Capture Switch", ADAU1701_DSPCTRL, 4, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget adau1701_dapm_widgets[] = {
+       SND_SOC_DAPM_DAC("DAC0", "Playback", ADAU1701_AUXNPOW, 3, 1),
+       SND_SOC_DAPM_DAC("DAC1", "Playback", ADAU1701_AUXNPOW, 2, 1),
+       SND_SOC_DAPM_DAC("DAC2", "Playback", ADAU1701_AUXNPOW, 1, 1),
+       SND_SOC_DAPM_DAC("DAC3", "Playback", ADAU1701_AUXNPOW, 0, 1),
+       SND_SOC_DAPM_ADC("ADC", "Capture", ADAU1701_AUXNPOW, 7, 1),
+
+       SND_SOC_DAPM_OUTPUT("OUT0"),
+       SND_SOC_DAPM_OUTPUT("OUT1"),
+       SND_SOC_DAPM_OUTPUT("OUT2"),
+       SND_SOC_DAPM_OUTPUT("OUT3"),
+       SND_SOC_DAPM_INPUT("IN0"),
+       SND_SOC_DAPM_INPUT("IN1"),
+};
+
+static const struct snd_soc_dapm_route adau1701_dapm_routes[] = {
+       { "OUT0", NULL, "DAC0" },
+       { "OUT1", NULL, "DAC1" },
+       { "OUT2", NULL, "DAC2" },
+       { "OUT3", NULL, "DAC3" },
+
+       { "ADC", NULL, "IN0" },
+       { "ADC", NULL, "IN1" },
+};
+
+static unsigned int adau1701_register_size(struct snd_soc_codec *codec,
+               unsigned int reg)
+{
+       switch (reg) {
+       case ADAU1701_DSPCTRL:
+       case ADAU1701_SEROCTL:
+       case ADAU1701_AUXNPOW:
+       case ADAU1701_OSCIPOW:
+       case ADAU1701_DACSET:
+               return 2;
+       case ADAU1701_SERICTL:
+               return 1;
+       }
+
+       dev_err(codec->dev, "Unsupported register address: %d\n", reg);
+       return 0;
+}
+
+static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg,
+               unsigned int value)
+{
+       unsigned int i, ret;
+       unsigned int size;
+       uint8_t buf[4];
+
+       size = adau1701_register_size(codec, reg);
+       if (size == 0)
+               return -EINVAL;
+
+       snd_soc_cache_write(codec, reg, value);
+
+       buf[0] = 0x08;
+       buf[1] = reg;
+
+       for (i = size + 1; i >= 2; --i) {
+               buf[i] = value;
+               value >>= 8;
+       }
+
+       ret = i2c_master_send(to_i2c_client(codec->dev), buf, size + 2);
+       if (ret == size + 2)
+               return 0;
+       else if (ret < 0)
+               return ret;
+       else
+               return -EIO;
+}
+
+static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg)
+{
+       unsigned int value;
+       unsigned int ret;
+
+       ret = snd_soc_cache_read(codec, reg, &value);
+       if (ret)
+               return ret;
+
+       return value;
+}
+
+static int adau1701_load_firmware(struct snd_soc_codec *codec)
+{
+       return process_sigma_firmware(codec->control_data, ADAU1701_FIRMWARE);
+}
+
+static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec,
+               snd_pcm_format_t format)
+{
+       struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
+       unsigned int mask = ADAU1701_SEROCTL_WORD_LEN_MASK;
+       unsigned int val;
+
+       switch (format) {
+       case SNDRV_PCM_FORMAT_S16_LE:
+               val = ADAU1701_SEROCTL_WORD_LEN_16;
+               break;
+       case SNDRV_PCM_FORMAT_S20_3LE:
+               val = ADAU1701_SEROCTL_WORD_LEN_20;
+               break;
+       case SNDRV_PCM_FORMAT_S24_LE:
+               val = ADAU1701_SEROCTL_WORD_LEN_24;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       if (adau1701->dai_fmt == SND_SOC_DAIFMT_RIGHT_J) {
+               switch (format) {
+               case SNDRV_PCM_FORMAT_S16_LE:
+                       val |= ADAU1701_SEROCTL_MSB_DEALY16;
+                       break;
+               case SNDRV_PCM_FORMAT_S20_3LE:
+                       val |= ADAU1701_SEROCTL_MSB_DEALY12;
+                       break;
+               case SNDRV_PCM_FORMAT_S24_LE:
+                       val |= ADAU1701_SEROCTL_MSB_DEALY8;
+                       break;
+               }
+               mask |= ADAU1701_SEROCTL_MSB_DEALY_MASK;
+       }
+
+       snd_soc_update_bits(codec, ADAU1701_SEROCTL, mask, val);
+
+       return 0;
+}
+
+static int adau1701_set_playback_pcm_format(struct snd_soc_codec *codec,
+                       snd_pcm_format_t format)
+{
+       struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
+       unsigned int val;
+
+       if (adau1701->dai_fmt != SND_SOC_DAIFMT_RIGHT_J)
+               return 0;
+
+       switch (format) {
+       case SNDRV_PCM_FORMAT_S16_LE:
+               val = ADAU1701_SERICTL_RIGHTJ_16;
+               break;
+       case SNDRV_PCM_FORMAT_S20_3LE:
+               val = ADAU1701_SERICTL_RIGHTJ_20;
+               break;
+       case SNDRV_PCM_FORMAT_S24_LE:
+               val = ADAU1701_SERICTL_RIGHTJ_24;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       snd_soc_update_bits(codec, ADAU1701_SERICTL,
+               ADAU1701_SERICTL_MODE_MASK, val);
+
+       return 0;
+}
+
+static int adau1701_hw_params(struct snd_pcm_substream *substream,
+               struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_codec *codec = rtd->codec;
+       snd_pcm_format_t format;
+       unsigned int val;
+
+       switch (params_rate(params)) {
+       case 192000:
+               val = ADAU1701_DSPCTRL_SR_192;
+               break;
+       case 96000:
+               val = ADAU1701_DSPCTRL_SR_96;
+               break;
+       case 48000:
+               val = ADAU1701_DSPCTRL_SR_48;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       snd_soc_update_bits(codec, ADAU1701_DSPCTRL,
+               ADAU1701_DSPCTRL_SR_MASK, val);
+
+       format = params_format(params);
+       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+               return adau1701_set_playback_pcm_format(codec, format);
+       else
+               return adau1701_set_capture_pcm_format(codec, format);
+}
+
+static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai,
+               unsigned int fmt)
+{
+       struct snd_soc_codec *codec = codec_dai->codec;
+       struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
+       unsigned int serictl = 0x00, seroctl = 0x00;
+       bool invert_lrclk;
+
+       switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+       case SND_SOC_DAIFMT_CBM_CFM:
+               /* master, 64-bits per sample, 1 frame per sample */
+               seroctl |= ADAU1701_SEROCTL_MASTER | ADAU1701_SEROCTL_OBF16
+                               | ADAU1701_SEROCTL_OLF1024;
+               break;
+       case SND_SOC_DAIFMT_CBS_CFS:
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       /* clock inversion */
+       switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+       case SND_SOC_DAIFMT_NB_NF:
+               invert_lrclk = false;
+               break;
+       case SND_SOC_DAIFMT_NB_IF:
+               invert_lrclk = true;
+               break;
+       case SND_SOC_DAIFMT_IB_NF:
+               invert_lrclk = false;
+               serictl |= ADAU1701_SERICTL_INV_BCLK;
+               seroctl |= ADAU1701_SEROCTL_INV_BCLK;
+               break;
+       case SND_SOC_DAIFMT_IB_IF:
+               invert_lrclk = true;
+               serictl |= ADAU1701_SERICTL_INV_BCLK;
+               seroctl |= ADAU1701_SEROCTL_INV_BCLK;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+       case SND_SOC_DAIFMT_I2S:
+               break;
+       case SND_SOC_DAIFMT_LEFT_J:
+               serictl |= ADAU1701_SERICTL_LEFTJ;
+               seroctl |= ADAU1701_SEROCTL_MSB_DEALY0;
+               invert_lrclk = !invert_lrclk;
+               break;
+       case SND_SOC_DAIFMT_RIGHT_J:
+               serictl |= ADAU1701_SERICTL_RIGHTJ_24;
+               seroctl |= ADAU1701_SEROCTL_MSB_DEALY8;
+               invert_lrclk = !invert_lrclk;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       if (invert_lrclk) {
+               seroctl |= ADAU1701_SEROCTL_INV_LRCLK;
+               serictl |= ADAU1701_SERICTL_INV_LRCLK;
+       }
+
+       adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
+
+       snd_soc_write(codec, ADAU1701_SERICTL, serictl);
+       snd_soc_update_bits(codec, ADAU1701_SEROCTL,
+               ~ADAU1701_SEROCTL_WORD_LEN_MASK, seroctl);
+
+       return 0;
+}
+
+static int adau1701_set_bias_level(struct snd_soc_codec *codec,
+               enum snd_soc_bias_level level)
+{
+       unsigned int mask = ADAU1701_AUXNPOW_VBPD | ADAU1701_AUXNPOW_VRPD;
+
+       switch (level) {
+       case SND_SOC_BIAS_ON:
+               break;
+       case SND_SOC_BIAS_PREPARE:
+               break;
+       case SND_SOC_BIAS_STANDBY:
+               /* Enable VREF and VREF buffer */
+               snd_soc_update_bits(codec, ADAU1701_AUXNPOW, mask, 0x00);
+               break;
+       case SND_SOC_BIAS_OFF:
+               /* Disable VREF and VREF buffer */
+               snd_soc_update_bits(codec, ADAU1701_AUXNPOW, mask, mask);
+               break;
+       }
+
+       codec->dapm.bias_level = level;
+       return 0;
+}
+
+static int adau1701_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+       struct snd_soc_codec *codec = dai->codec;
+       unsigned int mask = ADAU1701_DSPCTRL_DAM;
+       unsigned int val;
+
+       if (mute)
+               val = 0;
+       else
+               val = mask;
+
+       snd_soc_update_bits(codec, ADAU1701_DSPCTRL, mask, val);
+
+       return 0;
+}
+
+static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id,
+       unsigned int freq, int dir)
+{
+       unsigned int val;
+
+       switch (clk_id) {
+       case ADAU1701_CLK_SRC_OSC:
+               val = 0x0;
+               break;
+       case ADAU1701_CLK_SRC_MCLK:
+               val = ADAU1701_OSCIPOW_OPD;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       snd_soc_update_bits(codec, ADAU1701_OSCIPOW, ADAU1701_OSCIPOW_OPD, val);
+
+       return 0;
+}
+
+#define ADAU1701_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
+       SNDRV_PCM_RATE_192000)
+
+#define ADAU1701_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+       SNDRV_PCM_FMTBIT_S24_LE)
+
+static const struct snd_soc_dai_ops adau1701_dai_ops = {
+       .set_fmt        = adau1701_set_dai_fmt,
+       .hw_params      = adau1701_hw_params,
+       .digital_mute   = adau1701_digital_mute,
+};
+
+static struct snd_soc_dai_driver adau1701_dai = {
+       .name = "adau1701",
+       .playback = {
+               .stream_name = "Playback",
+               .channels_min = 2,
+               .channels_max = 8,
+               .rates = ADAU1701_RATES,
+               .formats = ADAU1701_FORMATS,
+       },
+       .capture = {
+               .stream_name = "Capture",
+               .channels_min = 2,
+               .channels_max = 8,
+               .rates = ADAU1701_RATES,
+               .formats = ADAU1701_FORMATS,
+       },
+       .ops = &adau1701_dai_ops,
+       .symmetric_rates = 1,
+};
+
+static int adau1701_probe(struct snd_soc_codec *codec)
+{
+       int ret;
+
+       codec->dapm.idle_bias_off = 1;
+
+       ret = adau1701_load_firmware(codec);
+       if (ret)
+               dev_warn(codec->dev, "Failed to load firmware\n");
+
+       snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
+       snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
+
+       return 0;
+}
+
+static struct snd_soc_codec_driver adau1701_codec_drv = {
+       .probe                  = adau1701_probe,
+       .set_bias_level         = adau1701_set_bias_level,
+
+       .reg_cache_size         = ADAU1701_NUM_REGS,
+       .reg_word_size          = sizeof(u16),
+
+       .controls               = adau1701_controls,
+       .num_controls           = ARRAY_SIZE(adau1701_controls),
+       .dapm_widgets           = adau1701_dapm_widgets,
+       .num_dapm_widgets       = ARRAY_SIZE(adau1701_dapm_widgets),
+       .dapm_routes            = adau1701_dapm_routes,
+       .num_dapm_routes        = ARRAY_SIZE(adau1701_dapm_routes),
+
+       .write                  = adau1701_write,
+       .read                   = adau1701_read,
+
+       .set_sysclk             = adau1701_set_sysclk,
+};
+
+static __devinit int adau1701_i2c_probe(struct i2c_client *client,
+               const struct i2c_device_id *id)
+{
+       struct adau1701 *adau1701;
+       int ret;
+
+       adau1701 = kzalloc(sizeof(*adau1701), GFP_KERNEL);
+       if (!adau1701)
+               return -ENOMEM;
+
+       i2c_set_clientdata(client, adau1701);
+       ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv,
+                       &adau1701_dai, 1);
+       if (ret < 0)
+               kfree(adau1701);
+
+       return ret;
+}
+
+static __devexit int adau1701_i2c_remove(struct i2c_client *client)
+{
+       snd_soc_unregister_codec(&client->dev);
+       kfree(i2c_get_clientdata(client));
+       return 0;
+}
+
+static const struct i2c_device_id adau1701_i2c_id[] = {
+       { "adau1701", 0 },
+       { }
+};
+MODULE_DEVICE_TABLE(i2c, adau1701_i2c_id);
+
+static struct i2c_driver adau1701_i2c_driver = {
+       .driver = {
+               .name   = "adau1701",
+               .owner  = THIS_MODULE,
+       },
+       .probe          = adau1701_i2c_probe,
+       .remove         = __devexit_p(adau1701_i2c_remove),
+       .id_table       = adau1701_i2c_id,
+};
+
+static int __init adau1701_init(void)
+{
+       return i2c_add_driver(&adau1701_i2c_driver);
+}
+module_init(adau1701_init);
+
+static void __exit adau1701_exit(void)
+{
+       i2c_del_driver(&adau1701_i2c_driver);
+}
+module_exit(adau1701_exit);
+
+MODULE_DESCRIPTION("ASoC ADAU1701 SigmaDSP driver");
+MODULE_AUTHOR("Cliff Cai <cliff.cai@analog.com>");
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/adau1701.h b/sound/soc/codecs/adau1701.h
new file mode 100644 (file)
index 0000000..8d0949a
--- /dev/null
@@ -0,0 +1,17 @@
+/*
+ * header file for ADAU1701 SigmaDSP processor
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef _ADAU1701_H
+#define _ADAU1701_H
+
+enum adau1701_clk_src {
+       ADAU1701_CLK_SRC_OSC,
+       ADAU1701_CLK_SRC_MCLK,
+};
+
+#endif