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kernel-ark/sound/soc/codecs/ak4535.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

671 lines
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/*
* ak4535.c -- AK4535 ALSA Soc Audio driver
*
* Copyright 2005 Openedhand Ltd.
*
* Author: Richard Purdie <richard@openedhand.com>
*
* Based on wm8753.c by Liam Girdwood
*
* 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 <linux/slab.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 "ak4535.h"
#define AK4535_VERSION "0.3"
struct snd_soc_codec_device soc_codec_dev_ak4535;
/* codec private data */
struct ak4535_priv {
unsigned int sysclk;
};
/*
* ak4535 register cache
*/
static const u16 ak4535_reg[AK4535_CACHEREGNUM] = {
0x0000, 0x0080, 0x0000, 0x0003,
0x0002, 0x0000, 0x0011, 0x0001,
0x0000, 0x0040, 0x0036, 0x0010,
0x0000, 0x0000, 0x0057, 0x0000,
};
/*
* read ak4535 register cache
*/
static inline unsigned int ak4535_read_reg_cache(struct snd_soc_codec *codec,
unsigned int reg)
{
u16 *cache = codec->reg_cache;
if (reg >= AK4535_CACHEREGNUM)
return -1;
return cache[reg];
}
/*
* write ak4535 register cache
*/
static inline void ak4535_write_reg_cache(struct snd_soc_codec *codec,
u16 reg, unsigned int value)
{
u16 *cache = codec->reg_cache;
if (reg >= AK4535_CACHEREGNUM)
return;
cache[reg] = value;
}
/*
* write to the AK4535 register space
*/
static int ak4535_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
u8 data[2];
/* data is
* D15..D8 AK4535 register offset
* D7...D0 register data
*/
data[0] = reg & 0xff;
data[1] = value & 0xff;
ak4535_write_reg_cache(codec, reg, value);
if (codec->hw_write(codec->control_data, data, 2) == 2)
return 0;
else
return -EIO;
}
static int ak4535_sync(struct snd_soc_codec *codec)
{
u16 *cache = codec->reg_cache;
int i, r = 0;
for (i = 0; i < AK4535_CACHEREGNUM; i++)
r |= ak4535_write(codec, i, cache[i]);
return r;
};
static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
static const char *ak4535_mic_select[] = {"Internal", "External"};
static const struct soc_enum ak4535_enum[] = {
SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
};
static const struct snd_kcontrol_new ak4535_snd_controls[] = {
SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
SOC_ENUM("Headphone Output", ak4535_enum[2]),
SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
SOC_ENUM("Mic Select", ak4535_enum[4]),
SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
};
/* Mono 1 Mixer */
static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
};
/* Stereo Mixer */
static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
};
/* Input Mixer */
static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
};
/* Input mux */
static const struct snd_kcontrol_new ak4535_input_mux_control =
SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
/* HP L switch */
static const struct snd_kcontrol_new ak4535_hpl_control =
SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
/* HP R switch */
static const struct snd_kcontrol_new ak4535_hpr_control =
SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
/* mono 2 switch */
static const struct snd_kcontrol_new ak4535_mono2_control =
SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
/* Line out switch */
static const struct snd_kcontrol_new ak4535_line_control =
SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
/* ak4535 dapm widgets */
static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
&ak4535_stereo_mixer_controls[0],
ARRAY_SIZE(ak4535_stereo_mixer_controls)),
SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
&ak4535_mono1_mixer_controls[0],
ARRAY_SIZE(ak4535_mono1_mixer_controls)),
SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
&ak4535_input_mixer_controls[0],
ARRAY_SIZE(ak4535_input_mixer_controls)),
SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
&ak4535_input_mux_control),
SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
&ak4535_mono2_control),
/* speaker powersave bit */
SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
&ak4535_line_control),
SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
&ak4535_hpl_control),
SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
&ak4535_hpr_control),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("HPL"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("HPR"),
SND_SOC_DAPM_OUTPUT("SPP"),
SND_SOC_DAPM_OUTPUT("SPN"),
SND_SOC_DAPM_OUTPUT("MOUT1"),
SND_SOC_DAPM_OUTPUT("MOUT2"),
SND_SOC_DAPM_OUTPUT("MICOUT"),
SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
SND_SOC_DAPM_INPUT("MICIN"),
SND_SOC_DAPM_INPUT("MICEXT"),
SND_SOC_DAPM_INPUT("AUX"),
SND_SOC_DAPM_INPUT("MIN"),
SND_SOC_DAPM_INPUT("AIN"),
};
static const struct snd_soc_dapm_route audio_map[] = {
/*stereo mixer */
{"Stereo Mixer", "Playback Switch", "DAC"},
{"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
/* mono1 mixer */
{"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
{"Mono1 Mixer", "Mono Playback Switch", "DAC"},
/* Mic */
{"Mic", NULL, "AIN"},
{"Input Mux", "Internal", "Mic Int Bias"},
{"Input Mux", "External", "Mic Ext Bias"},
{"Mic Int Bias", NULL, "MICIN"},
{"Mic Ext Bias", NULL, "MICEXT"},
{"MICOUT", NULL, "Input Mux"},
/* line out */
{"LOUT", NULL, "Line Out Enable"},
{"ROUT", NULL, "Line Out Enable"},
{"Line Out Enable", "Switch", "Line Out"},
{"Line Out", NULL, "Stereo Mixer"},
/* mono1 out */
{"MOUT1", NULL, "Mono Out"},
{"Mono Out", NULL, "Mono1 Mixer"},
/* left HP */
{"HPL", NULL, "Left HP Enable"},
{"Left HP Enable", "Switch", "HP L Amp"},
{"HP L Amp", NULL, "Stereo Mixer"},
/* right HP */
{"HPR", NULL, "Right HP Enable"},
{"Right HP Enable", "Switch", "HP R Amp"},
{"HP R Amp", NULL, "Stereo Mixer"},
/* speaker */
{"SPP", NULL, "Speaker Enable"},
{"SPN", NULL, "Speaker Enable"},
{"Speaker Enable", "Switch", "Spk Amp"},
{"Spk Amp", NULL, "MIN"},
/* mono 2 */
{"MOUT2", NULL, "Mono 2 Enable"},
{"Mono 2 Enable", "Switch", "Stereo Mixer"},
/* Aux In */
{"Aux In", NULL, "AUX"},
/* ADC */
{"ADC", NULL, "Input Mixer"},
{"Input Mixer", "Mic Capture Switch", "Mic"},
{"Input Mixer", "Aux Capture Switch", "Aux In"},
};
static int ak4535_add_widgets(struct snd_soc_codec *codec)
{
snd_soc_dapm_new_controls(codec, ak4535_dapm_widgets,
ARRAY_SIZE(ak4535_dapm_widgets));
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
static int ak4535_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 ak4535_priv *ak4535 = codec->private_data;
ak4535->sysclk = freq;
return 0;
}
static int ak4535_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_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->codec;
struct ak4535_priv *ak4535 = codec->private_data;
u8 mode2 = ak4535_read_reg_cache(codec, AK4535_MODE2) & ~(0x3 << 5);
int rate = params_rate(params), fs = 256;
if (rate)
fs = ak4535->sysclk / rate;
/* set fs */
switch (fs) {
case 1024:
mode2 |= (0x2 << 5);
break;
case 512:
mode2 |= (0x1 << 5);
break;
case 256:
break;
}
/* set rate */
ak4535_write(codec, AK4535_MODE2, mode2);
return 0;
}
static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u8 mode1 = 0;
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
mode1 = 0x0002;
break;
case SND_SOC_DAIFMT_LEFT_J:
mode1 = 0x0001;
break;
default:
return -EINVAL;
}
/* use 32 fs for BCLK to save power */
mode1 |= 0x4;
ak4535_write(codec, AK4535_MODE1, mode1);
return 0;
}
static int ak4535_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
u16 mute_reg = ak4535_read_reg_cache(codec, AK4535_DAC) & 0xffdf;
if (!mute)
ak4535_write(codec, AK4535_DAC, mute_reg);
else
ak4535_write(codec, AK4535_DAC, mute_reg | 0x20);
return 0;
}
static int ak4535_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 i;
switch (level) {
case SND_SOC_BIAS_ON:
ak4535_mute(codec->dai, 0);
break;
case SND_SOC_BIAS_PREPARE:
ak4535_mute(codec->dai, 1);
break;
case SND_SOC_BIAS_STANDBY:
i = ak4535_read_reg_cache(codec, AK4535_PM1);
ak4535_write(codec, AK4535_PM1, i | 0x80);
i = ak4535_read_reg_cache(codec, AK4535_PM2);
ak4535_write(codec, AK4535_PM2, i & (~0x80));
break;
case SND_SOC_BIAS_OFF:
i = ak4535_read_reg_cache(codec, AK4535_PM1);
ak4535_write(codec, AK4535_PM1, i & (~0x80));
break;
}
codec->bias_level = level;
return 0;
}
#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
static struct snd_soc_dai_ops ak4535_dai_ops = {
.hw_params = ak4535_hw_params,
.set_fmt = ak4535_set_dai_fmt,
.digital_mute = ak4535_mute,
.set_sysclk = ak4535_set_dai_sysclk,
};
struct snd_soc_dai ak4535_dai = {
.name = "AK4535",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = AK4535_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = AK4535_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.ops = &ak4535_dai_ops,
};
EXPORT_SYMBOL_GPL(ak4535_dai);
static int ak4535_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;
ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int ak4535_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
ak4535_sync(codec);
ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
ak4535_set_bias_level(codec, codec->suspend_bias_level);
return 0;
}
/*
* initialise the AK4535 driver
* register the mixer and dsp interfaces with the kernel
*/
static int ak4535_init(struct snd_soc_device *socdev)
{
struct snd_soc_codec *codec = socdev->card->codec;
int ret = 0;
codec->name = "AK4535";
codec->owner = THIS_MODULE;
codec->read = ak4535_read_reg_cache;
codec->write = ak4535_write;
codec->set_bias_level = ak4535_set_bias_level;
codec->dai = &ak4535_dai;
codec->num_dai = 1;
codec->reg_cache_size = ARRAY_SIZE(ak4535_reg);
codec->reg_cache = kmemdup(ak4535_reg, sizeof(ak4535_reg), GFP_KERNEL);
if (codec->reg_cache == NULL)
return -ENOMEM;
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
printk(KERN_ERR "ak4535: failed to create pcms\n");
goto pcm_err;
}
/* power on device */
ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
snd_soc_add_controls(codec, ak4535_snd_controls,
ARRAY_SIZE(ak4535_snd_controls));
ak4535_add_widgets(codec);
return ret;
pcm_err:
kfree(codec->reg_cache);
return ret;
}
static struct snd_soc_device *ak4535_socdev;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static int ak4535_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct snd_soc_device *socdev = ak4535_socdev;
struct snd_soc_codec *codec = socdev->card->codec;
int ret;
i2c_set_clientdata(i2c, codec);
codec->control_data = i2c;
ret = ak4535_init(socdev);
if (ret < 0)
printk(KERN_ERR "failed to initialise AK4535\n");
return ret;
}
static int ak4535_i2c_remove(struct i2c_client *client)
{
struct snd_soc_codec *codec = i2c_get_clientdata(client);
kfree(codec->reg_cache);
return 0;
}
static const struct i2c_device_id ak4535_i2c_id[] = {
{ "ak4535", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
static struct i2c_driver ak4535_i2c_driver = {
.driver = {
.name = "AK4535 I2C Codec",
.owner = THIS_MODULE,
},
.probe = ak4535_i2c_probe,
.remove = ak4535_i2c_remove,
.id_table = ak4535_i2c_id,
};
static int ak4535_add_i2c_device(struct platform_device *pdev,
const struct ak4535_setup_data *setup)
{
struct i2c_board_info info;
struct i2c_adapter *adapter;
struct i2c_client *client;
int ret;
ret = i2c_add_driver(&ak4535_i2c_driver);
if (ret != 0) {
dev_err(&pdev->dev, "can't add i2c driver\n");
return ret;
}
memset(&info, 0, sizeof(struct i2c_board_info));
info.addr = setup->i2c_address;
strlcpy(info.type, "ak4535", I2C_NAME_SIZE);
adapter = i2c_get_adapter(setup->i2c_bus);
if (!adapter) {
dev_err(&pdev->dev, "can't get i2c adapter %d\n",
setup->i2c_bus);
goto err_driver;
}
client = i2c_new_device(adapter, &info);
i2c_put_adapter(adapter);
if (!client) {
dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
(unsigned int)info.addr);
goto err_driver;
}
return 0;
err_driver:
i2c_del_driver(&ak4535_i2c_driver);
return -ENODEV;
}
#endif
static int ak4535_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct ak4535_setup_data *setup;
struct snd_soc_codec *codec;
struct ak4535_priv *ak4535;
int ret;
printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);
setup = socdev->codec_data;
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
if (codec == NULL)
return -ENOMEM;
ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL);
if (ak4535 == NULL) {
kfree(codec);
return -ENOMEM;
}
codec->private_data = ak4535;
socdev->card->codec = codec;
mutex_init(&codec->mutex);
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
ak4535_socdev = socdev;
ret = -ENODEV;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
if (setup->i2c_address) {
codec->hw_write = (hw_write_t)i2c_master_send;
ret = ak4535_add_i2c_device(pdev, setup);
}
#endif
if (ret != 0) {
kfree(codec->private_data);
kfree(codec);
}
return ret;
}
/* power down chip */
static int ak4535_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)
ak4535_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)
if (codec->control_data)
i2c_unregister_device(codec->control_data);
i2c_del_driver(&ak4535_i2c_driver);
#endif
kfree(codec->private_data);
kfree(codec);
return 0;
}
struct snd_soc_codec_device soc_codec_dev_ak4535 = {
.probe = ak4535_probe,
.remove = ak4535_remove,
.suspend = ak4535_suspend,
.resume = ak4535_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_ak4535);
static int __init ak4535_modinit(void)
{
return snd_soc_register_dai(&ak4535_dai);
}
module_init(ak4535_modinit);
static void __exit ak4535_exit(void)
{
snd_soc_unregister_dai(&ak4535_dai);
}
module_exit(ak4535_exit);
MODULE_DESCRIPTION("Soc AK4535 driver");
MODULE_AUTHOR("Richard Purdie");
MODULE_LICENSE("GPL");
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