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linux-stable/sound/soc/codecs/wm8510.c
Mark Brown e6968a1719 ASoC: codecs: Remove rtd->codec usage from CODEC drivers 
In order to support CODEC<->CODEC links remove the assumption that there
is only a single CODEC on a DAI link by removing the use of the CODEC
pointer in the rtd from the CODEC drivers. They are already being passed
their DAI whenever they are passed an rtd and can get the CODEC from
there.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-04 15:59:12 +01:00

705 lines
18 KiB
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/*
* wm8510.c -- WM8510 ALSA Soc Audio driver
*
* Copyright 2006 Wolfson Microelectronics PLC.
*
* Author: Liam Girdwood <lrg@slimlogic.co.uk>
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include "wm8510.h"
/*
* wm8510 register cache
* We can't read the WM8510 register space when we are
* using 2 wire for device control, so we cache them instead.
*/
static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
0x0000, 0x0000, 0x0000, 0x0000,
0x0050, 0x0000, 0x0140, 0x0000,
0x0000, 0x0000, 0x0000, 0x00ff,
0x0000, 0x0000, 0x0100, 0x00ff,
0x0000, 0x0000, 0x012c, 0x002c,
0x002c, 0x002c, 0x002c, 0x0000,
0x0032, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000,
0x0038, 0x000b, 0x0032, 0x0000,
0x0008, 0x000c, 0x0093, 0x00e9,
0x0000, 0x0000, 0x0000, 0x0000,
0x0003, 0x0010, 0x0000, 0x0000,
0x0000, 0x0002, 0x0001, 0x0000,
0x0000, 0x0000, 0x0039, 0x0000,
0x0001,
};
#define WM8510_POWER1_BIASEN 0x08
#define WM8510_POWER1_BUFIOEN 0x10
#define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0)
/* codec private data */
struct wm8510_priv {
enum snd_soc_control_type control_type;
};
static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
static const char *wm8510_alc[] = { "ALC", "Limiter" };
static const struct soc_enum wm8510_enum[] = {
SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp),
SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc),
};
static const struct snd_kcontrol_new wm8510_snd_controls[] = {
SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
SOC_ENUM("DAC Companding", wm8510_enum[1]),
SOC_ENUM("ADC Companding", wm8510_enum[0]),
SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0),
SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0),
SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0),
SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0),
SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0),
SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0),
SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0),
SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0),
SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0),
SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0),
SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0),
SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0),
SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0),
SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0),
SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0),
SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0),
SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0),
SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0),
SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0),
SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1),
SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0),
SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0),
SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
};
/* Speaker Output Mixer */
static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
};
/* Mono Output Mixer */
static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
};
static const struct snd_kcontrol_new wm8510_boost_controls[] = {
SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1),
SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
};
static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
};
static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
&wm8510_speaker_mixer_controls[0],
ARRAY_SIZE(wm8510_speaker_mixer_controls)),
SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
&wm8510_mono_mixer_controls[0],
ARRAY_SIZE(wm8510_mono_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
&wm8510_micpga_controls[0],
ARRAY_SIZE(wm8510_micpga_controls)),
SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
&wm8510_boost_controls[0],
ARRAY_SIZE(wm8510_boost_controls)),
SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
SND_SOC_DAPM_INPUT("MICN"),
SND_SOC_DAPM_INPUT("MICP"),
SND_SOC_DAPM_INPUT("AUX"),
SND_SOC_DAPM_OUTPUT("MONOOUT"),
SND_SOC_DAPM_OUTPUT("SPKOUTP"),
SND_SOC_DAPM_OUTPUT("SPKOUTN"),
};
static const struct snd_soc_dapm_route wm8510_dapm_routes[] = {
/* Mono output mixer */
{"Mono Mixer", "PCM Playback Switch", "DAC"},
{"Mono Mixer", "Aux Playback Switch", "Aux Input"},
{"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
/* Speaker output mixer */
{"Speaker Mixer", "PCM Playback Switch", "DAC"},
{"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
{"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
/* Outputs */
{"Mono Out", NULL, "Mono Mixer"},
{"MONOOUT", NULL, "Mono Out"},
{"SpkN Out", NULL, "Speaker Mixer"},
{"SpkP Out", NULL, "Speaker Mixer"},
{"SPKOUTN", NULL, "SpkN Out"},
{"SPKOUTP", NULL, "SpkP Out"},
/* Microphone PGA */
{"Mic PGA", "MICN Switch", "MICN"},
{"Mic PGA", "MICP Switch", "MICP"},
{ "Mic PGA", "AUX Switch", "Aux Input" },
/* Boost Mixer */
{"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
{"Boost Mixer", "Mic Volume", "MICP"},
{"Boost Mixer", "Aux Volume", "Aux Input"},
{"ADC", NULL, "Boost Mixer"},
};
struct pll_ {
unsigned int pre_div:4; /* prescale - 1 */
unsigned int n:4;
unsigned int k;
};
static struct pll_ pll_div;
/* The size in bits of the pll divide multiplied by 10
* to allow rounding later */
#define FIXED_PLL_SIZE ((1 << 24) * 10)
static void pll_factors(unsigned int target, unsigned int source)
{
unsigned long long Kpart;
unsigned int K, Ndiv, Nmod;
Ndiv = target / source;
if (Ndiv < 6) {
source >>= 1;
pll_div.pre_div = 1;
Ndiv = target / source;
} else
pll_div.pre_div = 0;
if ((Ndiv < 6) || (Ndiv > 12))
printk(KERN_WARNING
"WM8510 N value %u outwith recommended range!d\n",
Ndiv);
pll_div.n = Ndiv;
Nmod = target % source;
Kpart = FIXED_PLL_SIZE * (long long)Nmod;
do_div(Kpart, source);
K = Kpart & 0xFFFFFFFF;
/* Check if we need to round */
if ((K % 10) >= 5)
K += 5;
/* Move down to proper range now rounding is done */
K /= 10;
pll_div.k = K;
}
static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 reg;
if (freq_in == 0 || freq_out == 0) {
/* Clock CODEC directly from MCLK */
reg = snd_soc_read(codec, WM8510_CLOCK);
snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff);
/* Turn off PLL */
reg = snd_soc_read(codec, WM8510_POWER1);
snd_soc_write(codec, WM8510_POWER1, reg & 0x1df);
return 0;
}
pll_factors(freq_out*4, freq_in);
snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18);
snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
reg = snd_soc_read(codec, WM8510_POWER1);
snd_soc_write(codec, WM8510_POWER1, reg | 0x020);
/* Run CODEC from PLL instead of MCLK */
reg = snd_soc_read(codec, WM8510_CLOCK);
snd_soc_write(codec, WM8510_CLOCK, reg | 0x100);
return 0;
}
/*
* Configure WM8510 clock dividers.
*/
static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
int div_id, int div)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 reg;
switch (div_id) {
case WM8510_OPCLKDIV:
reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf;
snd_soc_write(codec, WM8510_GPIO, reg | div);
break;
case WM8510_MCLKDIV:
reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f;
snd_soc_write(codec, WM8510_CLOCK, reg | div);
break;
case WM8510_ADCCLK:
reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7;
snd_soc_write(codec, WM8510_ADC, reg | div);
break;
case WM8510_DACCLK:
reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7;
snd_soc_write(codec, WM8510_DAC, reg | div);
break;
case WM8510_BCLKDIV:
reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3;
snd_soc_write(codec, WM8510_CLOCK, reg | div);
break;
default:
return -EINVAL;
}
return 0;
}
static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 iface = 0;
u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
clk |= 0x0001;
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 |= 0x0010;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
iface |= 0x0008;
break;
case SND_SOC_DAIFMT_DSP_A:
iface |= 0x00018;
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 |= 0x0180;
break;
case SND_SOC_DAIFMT_IB_NF:
iface |= 0x0100;
break;
case SND_SOC_DAIFMT_NB_IF:
iface |= 0x0080;
break;
default:
return -EINVAL;
}
snd_soc_write(codec, WM8510_IFACE, iface);
snd_soc_write(codec, WM8510_CLOCK, clk);
return 0;
}
static int wm8510_pcm_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;
u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f;
u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1;
/* bit size */
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
iface |= 0x0020;
break;
case SNDRV_PCM_FORMAT_S24_LE:
iface |= 0x0040;
break;
case SNDRV_PCM_FORMAT_S32_LE:
iface |= 0x0060;
break;
}
/* filter coefficient */
switch (params_rate(params)) {
case 8000:
adn |= 0x5 << 1;
break;
case 11025:
adn |= 0x4 << 1;
break;
case 16000:
adn |= 0x3 << 1;
break;
case 22050:
adn |= 0x2 << 1;
break;
case 32000:
adn |= 0x1 << 1;
break;
case 44100:
case 48000:
break;
}
snd_soc_write(codec, WM8510_IFACE, iface);
snd_soc_write(codec, WM8510_ADD, adn);
return 0;
}
static int wm8510_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf;
if (mute)
snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40);
else
snd_soc_write(codec, WM8510_DAC, mute_reg);
return 0;
}
/* liam need to make this lower power with dapm */
static int wm8510_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3;
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
power1 |= 0x1; /* VMID 50k */
snd_soc_write(codec, WM8510_POWER1, power1);
break;
case SND_SOC_BIAS_STANDBY:
power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
snd_soc_cache_sync(codec);
/* Initial cap charge at VMID 5k */
snd_soc_write(codec, WM8510_POWER1, power1 | 0x3);
mdelay(100);
}
power1 |= 0x2; /* VMID 500k */
snd_soc_write(codec, WM8510_POWER1, power1);
break;
case SND_SOC_BIAS_OFF:
snd_soc_write(codec, WM8510_POWER1, 0);
snd_soc_write(codec, WM8510_POWER2, 0);
snd_soc_write(codec, WM8510_POWER3, 0);
break;
}
codec->dapm.bias_level = level;
return 0;
}
#define WM8510_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)
#define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static const struct snd_soc_dai_ops wm8510_dai_ops = {
.hw_params = wm8510_pcm_hw_params,
.digital_mute = wm8510_mute,
.set_fmt = wm8510_set_dai_fmt,
.set_clkdiv = wm8510_set_dai_clkdiv,
.set_pll = wm8510_set_dai_pll,
};
static struct snd_soc_dai_driver wm8510_dai = {
.name = "wm8510-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = WM8510_RATES,
.formats = WM8510_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = WM8510_RATES,
.formats = WM8510_FORMATS,},
.ops = &wm8510_dai_ops,
.symmetric_rates = 1,
};
static int wm8510_suspend(struct snd_soc_codec *codec)
{
wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8510_resume(struct snd_soc_codec *codec)
{
wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
static int wm8510_probe(struct snd_soc_codec *codec)
{
struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
int ret;
ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8510->control_type);
if (ret < 0) {
printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret);
return ret;
}
wm8510_reset(codec);
/* power on device */
wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return ret;
}
/* power down chip */
static int wm8510_remove(struct snd_soc_codec *codec)
{
struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
kfree(wm8510);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8510 = {
.probe = wm8510_probe,
.remove = wm8510_remove,
.suspend = wm8510_suspend,
.resume = wm8510_resume,
.set_bias_level = wm8510_set_bias_level,
.reg_cache_size = ARRAY_SIZE(wm8510_reg),
.reg_word_size = sizeof(u16),
.reg_cache_default =wm8510_reg,
.controls = wm8510_snd_controls,
.num_controls = ARRAY_SIZE(wm8510_snd_controls),
.dapm_widgets = wm8510_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets),
.dapm_routes = wm8510_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes),
};
static const struct of_device_id wm8510_of_match[] = {
{ .compatible = "wlf,wm8510" },
{ },
};
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8510_spi_probe(struct spi_device *spi)
{
struct wm8510_priv *wm8510;
int ret;
wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
if (wm8510 == NULL)
return -ENOMEM;
wm8510->control_type = SND_SOC_SPI;
spi_set_drvdata(spi, wm8510);
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8510, &wm8510_dai, 1);
if (ret < 0)
kfree(wm8510);
return ret;
}
static int __devexit wm8510_spi_remove(struct spi_device *spi)
{
snd_soc_unregister_codec(&spi->dev);
return 0;
}
static struct spi_driver wm8510_spi_driver = {
.driver = {
.name = "wm8510",
.owner = THIS_MODULE,
.of_match_table = wm8510_of_match,
},
.probe = wm8510_spi_probe,
.remove = __devexit_p(wm8510_spi_remove),
};
#endif /* CONFIG_SPI_MASTER */
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8510_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8510_priv *wm8510;
int ret;
wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
if (wm8510 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, wm8510);
wm8510->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8510, &wm8510_dai, 1);
if (ret < 0)
kfree(wm8510);
return ret;
}
static __devexit int wm8510_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id wm8510_i2c_id[] = {
{ "wm8510", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
static struct i2c_driver wm8510_i2c_driver = {
.driver = {
.name = "wm8510",
.owner = THIS_MODULE,
.of_match_table = wm8510_of_match,
},
.probe = wm8510_i2c_probe,
.remove = __devexit_p(wm8510_i2c_remove),
.id_table = wm8510_i2c_id,
};
#endif
static int __init wm8510_modinit(void)
{
int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8510_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8510_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n",
ret);
}
#endif
return ret;
}
module_init(wm8510_modinit);
static void __exit wm8510_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8510_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8510_spi_driver);
#endif
}
module_exit(wm8510_exit);
MODULE_DESCRIPTION("ASoC WM8510 driver");
MODULE_AUTHOR("Liam Girdwood");
MODULE_LICENSE("GPL");
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