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提交 bd6d4177 编写于 作者: M Mike Arthur 提交者： Mark Brown
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ASoC: Add WM8711 CODEC driver 

The WM8711 or WM8711L (WM8711/L) is a low power stereo DAC with an
integrated headphone driver. The WM8711/L is designed specifically for
portable MP3 audio and speech players. The WM8711/L is also ideal for
MD, CD machines and DAT players.
Signed-off-by: NMike Arthur <Mike.Arthur@wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
上级 07a2039b
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sound/soc/codecs/Kconfig
浏览文件 @ bd6d4177
...@@ -29,6 +29,7 @@ config SND_SOC_ALL_CODECS ...@@ -29,6 +29,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_WM8400 if MFD_WM8400 select SND_SOC_WM8400 if MFD_WM8400
select SND_SOC_WM8510 if SND_SOC_I2C_AND_SPI select SND_SOC_WM8510 if SND_SOC_I2C_AND_SPI
select SND_SOC_WM8580 if I2C select SND_SOC_WM8580 if I2C
select SND_SOC_WM8711 if I2C
select SND_SOC_WM8728 if SND_SOC_I2C_AND_SPI select SND_SOC_WM8728 if SND_SOC_I2C_AND_SPI
select SND_SOC_WM8731 if SND_SOC_I2C_AND_SPI select SND_SOC_WM8731 if SND_SOC_I2C_AND_SPI
select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI
...@@ -120,6 +121,9 @@ config SND_SOC_WM8510 ...@@ -120,6 +121,9 @@ config SND_SOC_WM8510
config SND_SOC_WM8580 config SND_SOC_WM8580
tristate tristate
config SND_SOC_WM8711
tristate
config SND_SOC_WM8728 config SND_SOC_WM8728
tristate tristate
......
sound/soc/codecs/Makefile
浏览文件 @ bd6d4177
...@@ -17,6 +17,7 @@ snd-soc-wm8350-objs := wm8350.o ...@@ -17,6 +17,7 @@ snd-soc-wm8350-objs := wm8350.o
snd-soc-wm8400-objs := wm8400.o snd-soc-wm8400-objs := wm8400.o
snd-soc-wm8510-objs := wm8510.o snd-soc-wm8510-objs := wm8510.o
snd-soc-wm8580-objs := wm8580.o snd-soc-wm8580-objs := wm8580.o
snd-soc-wm8711-objs := wm8711.o
snd-soc-wm8728-objs := wm8728.o snd-soc-wm8728-objs := wm8728.o
snd-soc-wm8731-objs := wm8731.o snd-soc-wm8731-objs := wm8731.o
snd-soc-wm8750-objs := wm8750.o snd-soc-wm8750-objs := wm8750.o
...@@ -48,6 +49,7 @@ obj-$(CONFIG_SND_SOC_WM8350) += snd-soc-wm8350.o ...@@ -48,6 +49,7 @@ obj-$(CONFIG_SND_SOC_WM8350) += snd-soc-wm8350.o
obj-$(CONFIG_SND_SOC_WM8400) += snd-soc-wm8400.o obj-$(CONFIG_SND_SOC_WM8400) += snd-soc-wm8400.o
obj-$(CONFIG_SND_SOC_WM8510) += snd-soc-wm8510.o obj-$(CONFIG_SND_SOC_WM8510) += snd-soc-wm8510.o
obj-$(CONFIG_SND_SOC_WM8580) += snd-soc-wm8580.o obj-$(CONFIG_SND_SOC_WM8580) += snd-soc-wm8580.o
obj-$(CONFIG_SND_SOC_WM8711) += snd-soc-wm8711.o
obj-$(CONFIG_SND_SOC_WM8728) += snd-soc-wm8728.o obj-$(CONFIG_SND_SOC_WM8728) += snd-soc-wm8728.o
obj-$(CONFIG_SND_SOC_WM8731) += snd-soc-wm8731.o obj-$(CONFIG_SND_SOC_WM8731) += snd-soc-wm8731.o
obj-$(CONFIG_SND_SOC_WM8750) += snd-soc-wm8750.o obj-$(CONFIG_SND_SOC_WM8750) += snd-soc-wm8750.o
......
sound/soc/codecs/wm8711.c 0 → 100644
浏览文件 @ bd6d4177
/*
* wm8711.c -- WM8711 ALSA SoC Audio driver
*
* Copyright 2006 Wolfson Microelectronics
*
* Author: Mike Arthur <linux@wolfsonmicro.com>
*
* Based on wm8731.c by Richard Purdie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include "wm8711.h"
#define AUDIO_NAME "wm8711"
#define WM8711_VERSION "0.3"
/* codec private data */
struct wm8711_priv {
unsigned int sysclk;
};
/*
* wm8711 register cache
* We can't read the WM8711 register space when we are
* using 2 wire for device control, so we cache them instead.
* There is no point in caching the reset register
*/
static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
0x0079, 0x0079, 0x000a, 0x0008,
0x009f, 0x000a, 0x0000, 0x0000
};
/*
* read wm8711 register cache
*/
static inline unsigned int wm8711_read_reg_cache(struct snd_soc_codec *codec,
unsigned int reg)
{
u16 *cache = codec->reg_cache;
if (reg == WM8711_RESET)
return 0;
if (reg >= WM8711_CACHEREGNUM)
return -1;
return cache[reg];
}
/*
* write wm8711 register cache
*/
static inline void wm8711_write_reg_cache(struct snd_soc_codec *codec,
u16 reg, unsigned int value)
{
u16 *cache = codec->reg_cache;
if (reg >= WM8711_CACHEREGNUM)
return;
cache[reg] = value;
}
/*
* write to the WM8711 register space
*/
static int wm8711_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
u8 data[2];
/* data is
* D15..D9 WM8753 register offset
* D8...D0 register data
*/
data[0] = (reg << 1) | ((value >> 8) & 0x0001);
data[1] = value & 0x00ff;
wm8711_write_reg_cache(codec, reg, value);
if (codec->hw_write(codec->control_data, data, 2) == 2)
return 0;
else
return -EIO;
}
#define wm8711_reset(c) wm8711_write(c, WM8711_RESET, 0)
static const struct snd_kcontrol_new wm8711_snd_controls[] = {
SOC_DOUBLE_R("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
0, 127, 0),
SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
7, 1, 0),
};
/* add non dapm controls */
static int wm8711_add_controls(struct snd_soc_codec *codec)
{
int err, i;
for (i = 0; i < ARRAY_SIZE(wm8711_snd_controls); i++) {
err = snd_ctl_add(codec->card,
snd_soc_cnew(&wm8711_snd_controls[i], codec,
NULL));
if (err < 0)
return err;
}
return 0;
}
/* Output Mixer */
static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
};
static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
&wm8711_output_mixer_controls[0],
ARRAY_SIZE(wm8711_output_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
};
static const struct snd_soc_dapm_route intercon[] = {
/* output mixer */
{"Output Mixer", "Line Bypass Switch", "Line Input"},
{"Output Mixer", "HiFi Playback Switch", "DAC"},
/* outputs */
{"RHPOUT", NULL, "Output Mixer"},
{"ROUT", NULL, "Output Mixer"},
{"LHPOUT", NULL, "Output Mixer"},
{"LOUT", NULL, "Output Mixer"},
};
static int wm8711_add_widgets(struct snd_soc_codec *codec)
{
snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets,
ARRAY_SIZE(wm8711_dapm_widgets));
snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
snd_soc_dapm_new_widgets(codec);
return 0;
}
struct _coeff_div {
u32 mclk;
u32 rate;
u16 fs;
u8 sr:4;
u8 bosr:1;
u8 usb:1;
};
/* codec mclk clock divider coefficients */
static const struct _coeff_div coeff_div[] = {
/* 48k */
{12288000, 48000, 256, 0x0, 0x0, 0x0},
{18432000, 48000, 384, 0x0, 0x1, 0x0},
{12000000, 48000, 250, 0x0, 0x0, 0x1},
/* 32k */
{12288000, 32000, 384, 0x6, 0x0, 0x0},
{18432000, 32000, 576, 0x6, 0x1, 0x0},
{12000000, 32000, 375, 0x6, 0x0, 0x1},
/* 8k */
{12288000, 8000, 1536, 0x3, 0x0, 0x0},
{18432000, 8000, 2304, 0x3, 0x1, 0x0},
{11289600, 8000, 1408, 0xb, 0x0, 0x0},
{16934400, 8000, 2112, 0xb, 0x1, 0x0},
{12000000, 8000, 1500, 0x3, 0x0, 0x1},
/* 96k */
{12288000, 96000, 128, 0x7, 0x0, 0x0},
{18432000, 96000, 192, 0x7, 0x1, 0x0},
{12000000, 96000, 125, 0x7, 0x0, 0x1},
/* 44.1k */
{11289600, 44100, 256, 0x8, 0x0, 0x0},
{16934400, 44100, 384, 0x8, 0x1, 0x0},
{12000000, 44100, 272, 0x8, 0x1, 0x1},
/* 88.2k */
{11289600, 88200, 128, 0xf, 0x0, 0x0},
{16934400, 88200, 192, 0xf, 0x1, 0x0},
{12000000, 88200, 136, 0xf, 0x1, 0x1},
};
static inline int get_coeff(int mclk, int rate)
{
int i;
for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
return i;
}
return 0;
}
static int wm8711_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8711_priv *wm8711 = codec->private_data;
u16 iface = wm8711_read_reg_cache(codec, WM8711_IFACE) & 0xfffc;
int i = get_coeff(wm8711->sysclk, params_rate(params));
u16 srate = (coeff_div[i].sr << 2) |
(coeff_div[i].bosr << 1) | coeff_div[i].usb;
wm8711_write(codec, WM8711_SRATE, srate);
/* bit size */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
iface |= 0x0004;
break;
case SNDRV_PCM_FORMAT_S24_LE:
iface |= 0x0008;
break;
}
wm8711_write(codec, WM8711_IFACE, iface);
return 0;
}
static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
/* set active */
wm8711_write(codec, WM8711_ACTIVE, 0x0001);
return 0;
}
static void wm8711_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
/* deactivate */
if (!codec->active) {
udelay(50);
wm8711_write(codec, WM8711_ACTIVE, 0x0);
}
}
static int wm8711_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
u16 mute_reg = wm8711_read_reg_cache(codec, WM8711_APDIGI) & 0xfff7;
if (mute)
wm8711_write(codec, WM8711_APDIGI, mute_reg | 0x8);
else
wm8711_write(codec, WM8711_APDIGI, mute_reg);
return 0;
}
static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct wm8711_priv *wm8711 = codec->private_data;
switch (freq) {
case 11289600:
case 12000000:
case 12288000:
case 16934400:
case 18432000:
wm8711->sysclk = freq;
return 0;
}
return -EINVAL;
}
static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 iface = 0;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
iface |= 0x0040;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
iface |= 0x0002;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
iface |= 0x0001;
break;
case SND_SOC_DAIFMT_DSP_A:
iface |= 0x0003;
break;
case SND_SOC_DAIFMT_DSP_B:
iface |= 0x0013;
break;
default:
return -EINVAL;
}
/* clock inversion */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
iface |= 0x0090;
break;
case SND_SOC_DAIFMT_IB_NF:
iface |= 0x0080;
break;
case SND_SOC_DAIFMT_NB_IF:
iface |= 0x0010;
break;
default:
return -EINVAL;
}
/* set iface */
wm8711_write(codec, WM8711_IFACE, iface);
return 0;
}
static int wm8711_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 reg = wm8711_read_reg_cache(codec, WM8711_PWR) & 0xff7f;
switch (level) {
case SND_SOC_BIAS_ON:
wm8711_write(codec, WM8711_PWR, reg);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
wm8711_write(codec, WM8711_PWR, reg | 0x0040);
break;
case SND_SOC_BIAS_OFF:
wm8711_write(codec, WM8711_ACTIVE, 0x0);
wm8711_write(codec, WM8711_PWR, 0xffff);
break;
}
codec->bias_level = level;
return 0;
}
#define WM8711_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
SNDRV_PCM_RATE_96000)
#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_ops wm8711_ops = {
.prepare = wm8711_pcm_prepare,
.hw_params = wm8711_hw_params,
.shutdown = wm8711_shutdown,
.digital_mute = wm8711_mute,
.set_sysclk = wm8711_set_dai_sysclk,
.set_fmt = wm8711_set_dai_fmt,
};
struct snd_soc_dai wm8711_dai = {
.name = "WM8711",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8711_RATES,
.formats = WM8711_FORMATS,},
.ops = &wm8711_ops,
};
EXPORT_SYMBOL_GPL(wm8711_dai);
static int wm8711_suspend(struct platform_device *pdev, pm_message_t state)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
wm8711_write(codec, WM8711_ACTIVE, 0x0);
wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8711_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
int i;
u8 data[2];
u16 *cache = codec->reg_cache;
/* Sync reg_cache with the hardware */
for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
data[1] = cache[i] & 0x00ff;
codec->hw_write(codec->control_data, data, 2);
}
wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
wm8711_set_bias_level(codec, codec->suspend_bias_level);
return 0;
}
/*
* initialise the WM8711 driver
* register the mixer and dsp interfaces with the kernel
*/
static int wm8711_init(struct snd_soc_device *socdev)
{
struct snd_soc_codec *codec = socdev->card->codec;
int reg, ret = 0;
codec->name = "WM8711";
codec->owner = THIS_MODULE;
codec->read = wm8711_read_reg_cache;
codec->write = wm8711_write;
codec->set_bias_level = wm8711_set_bias_level;
codec->dai = &wm8711_dai;
codec->num_dai = 1;
codec->reg_cache_size = ARRAY_SIZE(wm8711_reg);
codec->reg_cache = kmemdup(wm8711_reg, sizeof(wm8711_reg), GFP_KERNEL);
if (codec->reg_cache == NULL)
return -ENOMEM;
wm8711_reset(codec);
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
printk(KERN_ERR "wm8711: failed to create pcms\n");
goto pcm_err;
}
/* power on device */
wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* set the update bits */
reg = wm8711_read_reg_cache(codec, WM8711_LOUT1V);
wm8711_write(codec, WM8711_LOUT1V, reg | 0x0100);
reg = wm8711_read_reg_cache(codec, WM8711_ROUT1V);
wm8711_write(codec, WM8711_ROUT1V, reg | 0x0100);
wm8711_add_controls(codec);
wm8711_add_widgets(codec);
ret = snd_soc_init_card(socdev);
if (ret < 0) {
printk(KERN_ERR "wm8711: failed to register card\n");
goto card_err;
}
return ret;
card_err:
snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev);
pcm_err:
kfree(codec->reg_cache);
return ret;
}
static struct snd_soc_device *wm8711_socdev;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
/*
* WM8711 2 wire address is determined by GPIO5
* state during powerup.
* low = 0x1a
* high = 0x1b
*/
#define I2C_DRIVERID_WM8711 0xfefe /* liam - need a proper id */
static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
/* Magic definition of all other variables and things */
I2C_CLIENT_INSMOD;
static struct i2c_driver wm8711_i2c_driver;
static struct i2c_client client_template;
/* If the i2c layer weren't so broken, we could pass this kind of data
around */
static int wm8711_codec_probe(struct i2c_adapter *adap, int addr, int kind)
{
struct snd_soc_device *socdev = wm8711_socdev;
struct wm8711_setup_data *setup = socdev->codec_data;
struct snd_soc_codec *codec = socdev->card->codec;
struct i2c_client *i2c;
int ret;
if (addr != setup->i2c_address)
return -ENODEV;
client_template.adapter = adap;
client_template.addr = addr;
i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
if (i2c == NULL) {
kfree(codec);
return -ENOMEM;
}
i2c_set_clientdata(i2c, codec);
codec->control_data = i2c;
ret = i2c_attach_client(i2c);
if (ret < 0) {
pr_err("failed to attach codec at addr %x\n", addr);
goto err;
}
ret = wm8711_init(socdev);
if (ret < 0) {
pr_err("failed to initialise WM8711\n");
goto err;
}
return ret;
err:
kfree(codec);
kfree(i2c);
return ret;
}
static int wm8711_i2c_detach(struct i2c_client *client)
{
struct snd_soc_codec *codec = i2c_get_clientdata(client);
i2c_detach_client(client);
kfree(codec->reg_cache);
kfree(client);
return 0;
}
static int wm8711_i2c_attach(struct i2c_adapter *adap)
{
return i2c_probe(adap, &addr_data, wm8711_codec_probe);
}
/* corgi i2c codec control layer */
static struct i2c_driver wm8711_i2c_driver = {
.driver = {
.name = "WM8711 I2C Codec",
.owner = THIS_MODULE,
},
.id = I2C_DRIVERID_WM8711,
.attach_adapter = wm8711_i2c_attach,
.detach_client = wm8711_i2c_detach,
.command = NULL,
};
static struct i2c_client client_template = {
.name = "WM8711",
.driver = &wm8711_i2c_driver,
};
#endif
static int wm8711_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct wm8711_setup_data *setup;
struct snd_soc_codec *codec;
struct wm8711_priv *wm8711;
int ret = 0;
pr_info("WM8711 Audio Codec %s", WM8711_VERSION);
setup = socdev->codec_data;
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
if (codec == NULL)
return -ENOMEM;
wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
if (wm8711 == NULL) {
kfree(codec);
return -ENOMEM;
}
codec->private_data = wm8711;
socdev->card->codec = codec;
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
wm8711_socdev = socdev;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
if (setup->i2c_address) {
normal_i2c[0] = setup->i2c_address;
codec->hw_write = (hw_write_t)i2c_master_send;
ret = i2c_add_driver(&wm8711_i2c_driver);
if (ret != 0)
printk(KERN_ERR "can't add i2c driver");
}
#else
/* Add other interfaces here */
#endif
return ret;
}
/* power down chip */
static int wm8711_remove(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
if (codec->control_data)
wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev);
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8711_i2c_driver);
#endif
kfree(codec->private_data);
kfree(codec);
return 0;
}
struct snd_soc_codec_device soc_codec_dev_wm8711 = {
.probe = wm8711_probe,
.remove = wm8711_remove,
.suspend = wm8711_suspend,
.resume = wm8711_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711);
static int __init wm8711_modinit(void)
{
return snd_soc_register_dai(&wm8711_dai);
}
module_init(wm8711_modinit);
static void __exit wm8711_exit(void)
{
snd_soc_unregister_dai(&wm8711_dai);
}
module_exit(wm8711_exit);
MODULE_DESCRIPTION("ASoC WM8711 driver");
MODULE_AUTHOR("Mike Arthur");
MODULE_LICENSE("GPL");
sound/soc/codecs/wm8711.h 0 → 100644
浏览文件 @ bd6d4177
/*
* wm8711.h -- WM8711 Soc Audio driver
*
* Copyright 2006 Wolfson Microelectronics
*
* Author: Mike Arthur <linux@wolfsonmicro.com>
*
* Based on wm8731.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _WM8711_H
#define _WM8711_H
/* WM8711 register space */
#define WM8711_LOUT1V 0x02
#define WM8711_ROUT1V 0x03
#define WM8711_APANA 0x04
#define WM8711_APDIGI 0x05
#define WM8711_PWR 0x06
#define WM8711_IFACE 0x07
#define WM8711_SRATE 0x08
#define WM8711_ACTIVE 0x09
#define WM8711_RESET 0x0f
#define WM8711_CACHEREGNUM 8
#define WM8711_SYSCLK 0
#define WM8711_DAI 0
struct wm8711_setup_data {
unsigned short i2c_address;
};
extern struct snd_soc_dai wm8711_dai;
extern struct snd_soc_codec_device soc_codec_dev_wm8711;
#endif
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