[alsa-devel] [PATCH 1/3 v2] ASoC: Add ADAU1701 codec driver
Lars-Peter Clausen
lars at metafoo.de
Mon Jun 13 15:26:20 CEST 2011
This patch adds support for the Analog Devices ADAU1701 SigmaDSP.
Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>
---
Changes since v1:
Move the error message for unsupported register addresses to
adau1701_register_size.
---
sound/soc/codecs/Kconfig | 7 +-
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/adau1701.c | 548 +++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/adau1701.h | 17 ++
4 files changed, 573 insertions(+), 1 deletions(-)
create mode 100644 sound/soc/codecs/adau1701.c
create mode 100644 sound/soc/codecs/adau1701.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 98175a0..f745e55 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -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
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index fd85584..30a4c63 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -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
index 0000000..6c01bb6
--- /dev/null
+++ b/sound/soc/codecs/adau1701.c
@@ -0,0 +1,548 @@
+/*
+ * Driver for ADAU1701 SigmaDSP processor
+ *
+ * Copyright 2011 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars at metafoo.de>
+ * based on an inital version by Cliff Cai <cliff.cai at 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 at analog.com>");
+MODULE_AUTHOR("Lars-Peter Clausen <lars at metafoo.de>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/adau1701.h b/sound/soc/codecs/adau1701.h
new file mode 100644
index 0000000..8d0949a
--- /dev/null
+++ b/sound/soc/codecs/adau1701.h
@@ -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
--
1.7.2.5
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