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linux-stable/sound/soc/codecs/wm8711.c
Lars-Peter Clausen 85e7652d89 ASoC: Constify snd_soc_dai_ops structs 
Commit 1ee46ebd("ASoC: Make the DAI ops constant in the DAI structure")
introduced the possibility to have constant DAI ops structures, yet this is
barley used in both existing drivers and also new drivers being submitted,
although none of them modifies its DAI ops structure. The later is not
surprising since existing drivers are often used as templates for new drivers.
So this patch just constifies all existing snd_soc_dai_ops structs to eliminate
the issue altogether.

The patch was generated with the following coccinelle semantic patch:
// <smpl>
@@
identifier ops;
@@
-struct snd_soc_dai_ops ops =
+const struct snd_soc_dai_ops ops =
{ ... };
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-23 10:40:46 +00:00

531 lines
12 KiB
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/*
* wm8711.c -- WM8711 ALSA SoC Audio driver
*
* Copyright 2006 Wolfson Microelectronics
*
* Author: Mike Arthur <Mike.Arthur@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 <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/tlv.h>
#include <sound/initval.h>
#include "wm8711.h"
/* codec private data */
struct wm8711_priv {
enum snd_soc_control_type bus_type;
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
};
#define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
static const struct snd_kcontrol_new wm8711_snd_controls[] = {
SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
0, 127, 0, out_tlv),
SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
7, 1, 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 wm8711_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"},
};
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 = snd_soc_codec_get_drvdata(codec);
u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfff3;
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;
snd_soc_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;
}
snd_soc_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 */
snd_soc_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);
snd_soc_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 = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
if (mute)
snd_soc_write(codec, WM8711_APDIGI, mute_reg | 0x8);
else
snd_soc_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 = snd_soc_codec_get_drvdata(codec);
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 = snd_soc_read(codec, WM8711_IFACE) & 0x000c;
/* 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 */
snd_soc_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 = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
switch (level) {
case SND_SOC_BIAS_ON:
snd_soc_write(codec, WM8711_PWR, reg);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
snd_soc_cache_sync(codec);
snd_soc_write(codec, WM8711_PWR, reg | 0x0040);
break;
case SND_SOC_BIAS_OFF:
snd_soc_write(codec, WM8711_ACTIVE, 0x0);
snd_soc_write(codec, WM8711_PWR, 0xffff);
break;
}
codec->dapm.bias_level = level;
return 0;
}
#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
static const 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,
};
static struct snd_soc_dai_driver wm8711_dai = {
.name = "wm8711-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8711_RATES,
.formats = WM8711_FORMATS,
},
.ops = &wm8711_ops,
};
static int wm8711_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
snd_soc_write(codec, WM8711_ACTIVE, 0x0);
wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8711_resume(struct snd_soc_codec *codec)
{
wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
static int wm8711_probe(struct snd_soc_codec *codec)
{
struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
int ret;
ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
ret = wm8711_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
return ret;
}
wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Latch the update bits */
snd_soc_update_bits(codec, WM8711_LOUT1V, 0x0100, 0x0100);
snd_soc_update_bits(codec, WM8711_ROUT1V, 0x0100, 0x0100);
snd_soc_add_controls(codec, wm8711_snd_controls,
ARRAY_SIZE(wm8711_snd_controls));
return ret;
}
/* power down chip */
static int wm8711_remove(struct snd_soc_codec *codec)
{
wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
.probe = wm8711_probe,
.remove = wm8711_remove,
.suspend = wm8711_suspend,
.resume = wm8711_resume,
.set_bias_level = wm8711_set_bias_level,
.reg_cache_size = ARRAY_SIZE(wm8711_reg),
.reg_word_size = sizeof(u16),
.reg_cache_default = wm8711_reg,
.dapm_widgets = wm8711_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
.dapm_routes = wm8711_intercon,
.num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
};
static const struct of_device_id wm8711_of_match[] = {
{ .compatible = "wlf,wm8711", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8711_of_match);
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8711_spi_probe(struct spi_device *spi)
{
struct wm8711_priv *wm8711;
int ret;
wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
if (wm8711 == NULL)
return -ENOMEM;
spi_set_drvdata(spi, wm8711);
wm8711->bus_type = SND_SOC_SPI;
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8711, &wm8711_dai, 1);
if (ret < 0)
kfree(wm8711);
return ret;
}
static int __devexit wm8711_spi_remove(struct spi_device *spi)
{
snd_soc_unregister_codec(&spi->dev);
kfree(spi_get_drvdata(spi));
return 0;
}
static struct spi_driver wm8711_spi_driver = {
.driver = {
.name = "wm8711",
.owner = THIS_MODULE,
.of_match_table = wm8711_of_match,
},
.probe = wm8711_spi_probe,
.remove = __devexit_p(wm8711_spi_remove),
};
#endif /* CONFIG_SPI_MASTER */
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8711_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct wm8711_priv *wm8711;
int ret;
wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
if (wm8711 == NULL)
return -ENOMEM;
i2c_set_clientdata(client, wm8711);
wm8711->bus_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&client->dev,
&soc_codec_dev_wm8711, &wm8711_dai, 1);
if (ret < 0)
kfree(wm8711);
return ret;
}
static __devexit int wm8711_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 wm8711_i2c_id[] = {
{ "wm8711", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
static struct i2c_driver wm8711_i2c_driver = {
.driver = {
.name = "wm8711",
.owner = THIS_MODULE,
.of_match_table = wm8711_of_match,
},
.probe = wm8711_i2c_probe,
.remove = __devexit_p(wm8711_i2c_remove),
.id_table = wm8711_i2c_id,
};
#endif
static int __init wm8711_modinit(void)
{
int ret;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8711_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8711_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
ret);
}
#endif
return 0;
}
module_init(wm8711_modinit);
static void __exit wm8711_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8711_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8711_spi_driver);
#endif
}
module_exit(wm8711_exit);
MODULE_DESCRIPTION("ASoC WM8711 driver");
MODULE_AUTHOR("Mike Arthur");
MODULE_LICENSE("GPL");
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