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ALSA: ASoC: AD1980 audio codec driver
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[Mechanical updates from code review applied -- broonie]

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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Cliff Cai authored and Jaroslav Kysela committed Jul 29, 2008
1 parent 9cce39a commit 5f57dc8
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3 changes: 3 additions & 0 deletions sound/soc/codecs/Kconfig
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Expand Up @@ -2,6 +2,9 @@ config SND_SOC_AC97_CODEC
tristate
select SND_AC97_CODEC

config SND_SOC_AD1980
tristate

config SND_SOC_AK4535
tristate

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2 changes: 2 additions & 0 deletions sound/soc/codecs/Makefile
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@@ -1,4 +1,5 @@
snd-soc-ac97-objs := ac97.o
snd-soc-ad1980-objs := ad1980.o
snd-soc-ak4535-objs := ak4535.o
snd-soc-uda1380-objs := uda1380.o
snd-soc-wm8510-objs := wm8510.o
Expand All @@ -13,6 +14,7 @@ snd-soc-tlv320aic26-objs := tlv320aic26.o
snd-soc-tlv320aic3x-objs := tlv320aic3x.o

obj-$(CONFIG_SND_SOC_AC97_CODEC) += snd-soc-ac97.o
obj-$(CONFIG_SND_SOC_AD1980) += snd-soc-ad1980.o
obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o
obj-$(CONFIG_SND_SOC_UDA1380) += snd-soc-uda1380.o
obj-$(CONFIG_SND_SOC_WM8510) += snd-soc-wm8510.o
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309 changes: 309 additions & 0 deletions sound/soc/codecs/ad1980.c
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@@ -0,0 +1,309 @@
/*
* ad1980.c -- ALSA Soc AD1980 codec support
*
* Copyright: Analog Device Inc.
* Author: Roy Huang <roy.huang@analog.com>
* Cliff Cai <cliff.cai@analog.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/

#include <linux/init.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include "ad1980.h"

static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg);
static int ac97_write(struct snd_soc_codec *codec,
unsigned int reg, unsigned int val);

/*
* AD1980 register cache
*/
static const u16 ad1980_reg[] = {
0x0090, 0x8000, 0x8000, 0x8000, /* 0 - 6 */
0x0000, 0x0000, 0x8008, 0x8008, /* 8 - e */
0x8808, 0x8808, 0x0000, 0x8808, /* 10 - 16 */
0x8808, 0x0000, 0x8000, 0x0000, /* 18 - 1e */
0x0000, 0x0000, 0x0000, 0x0000, /* 20 - 26 */
0x03c7, 0x0000, 0xbb80, 0xbb80, /* 28 - 2e */
0xbb80, 0xbb80, 0x0000, 0x8080, /* 30 - 36 */
0x8080, 0x2000, 0x0000, 0x0000, /* 38 - 3e */
0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
0x8080, 0x0000, 0x0000, 0x0000, /* 60 - 66 */
0x0000, 0x0000, 0x0000, 0x0000, /* reserved */
0x0000, 0x0000, 0x1001, 0x0000, /* 70 - 76 */
0x0000, 0x0000, 0x4144, 0x5370 /* 78 - 7e */
};

static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
"Stereo Mix", "Mono Mix", "Phone"};

static const struct soc_enum ad1980_cap_src =
SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 7, ad1980_rec_sel);

static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),

SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),

SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),

SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),

SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),

SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),

SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),

SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),

SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),

SOC_ENUM("Capture Source", ad1980_cap_src),

SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
};

/* add non dapm controls */
static int ad1980_add_controls(struct snd_soc_codec *codec)
{
int err, i;

for (i = 0; i < ARRAY_SIZE(ad1980_snd_ac97_controls); i++) {
err = snd_ctl_add(codec->card, snd_soc_cnew(
&ad1980_snd_ac97_controls[i], codec, NULL));
if (err < 0)
return err;
}
return 0;
}

static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
u16 *cache = codec->reg_cache;

switch (reg) {
case AC97_RESET:
case AC97_INT_PAGING:
case AC97_POWERDOWN:
case AC97_EXTENDED_STATUS:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
return soc_ac97_ops.read(codec->ac97, reg);
default:
reg = reg >> 1;

if (reg >= (ARRAY_SIZE(ad1980_reg)))
return -EINVAL;

return cache[reg];
}
}

static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
u16 *cache = codec->reg_cache;

soc_ac97_ops.write(codec->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(ad1980_reg)))
cache[reg] = val;

return 0;
}

struct snd_soc_codec_dai ad1980_dai = {
.name = "AC97",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE, },
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE, },
};
EXPORT_SYMBOL_GPL(ad1980_dai);

static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
{
u16 retry_cnt = 0;

retry:
if (try_warm && soc_ac97_ops.warm_reset) {
soc_ac97_ops.warm_reset(codec->ac97);
if (ac97_read(codec, AC97_RESET) == 0x0090)
return 1;
}

soc_ac97_ops.reset(codec->ac97);
/* Set bit 16slot in register 74h, then every slot will has only 16
* bits. This command is sent out in 20bit mode, in which case the
* first nibble of data is eaten by the addr. (Tag is always 16 bit)*/
ac97_write(codec, AC97_AD_SERIAL_CFG, 0x9900);

if (ac97_read(codec, AC97_RESET) != 0x0090)
goto err;
return 0;

err:
while (retry_cnt++ < 10)
goto retry;

printk(KERN_ERR "AD1980 AC97 reset failed\n");
return -EIO;
}

static int ad1980_soc_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec;
int ret = 0;
u16 vendor_id2;

printk(KERN_INFO "AD1980 SoC Audio Codec\n");

socdev->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
if (socdev->codec == NULL)
return -ENOMEM;
codec = socdev->codec;
mutex_init(&codec->mutex);

codec->reg_cache =
kzalloc(sizeof(u16) * ARRAY_SIZE(ad1980_reg), GFP_KERNEL);
if (codec->reg_cache == NULL) {
ret = -ENOMEM;
goto cache_err;
}
memcpy(codec->reg_cache, ad1980_reg, sizeof(u16) * \
ARRAY_SIZE(ad1980_reg));
codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(ad1980_reg);
codec->reg_cache_step = 2;
codec->name = "AD1980";
codec->owner = THIS_MODULE;
codec->dai = &ad1980_dai;
codec->num_dai = 1;
codec->write = ac97_write;
codec->read = ac97_read;
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);

ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
if (ret < 0) {
printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
goto codec_err;
}

/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0)
goto pcm_err;


ret = ad1980_reset(codec, 0);
if (ret < 0) {
printk(KERN_ERR "AC97 link error\n");
goto reset_err;
}

/* Read out vendor ID to make sure it is ad1980 */
if (ac97_read(codec, AC97_VENDOR_ID1) != 0x4144)
goto reset_err;

vendor_id2 = ac97_read(codec, AC97_VENDOR_ID2);

if (vendor_id2 != 0x5370) {
if (vendor_id2 != 0x5374)
goto reset_err;
else
printk(KERN_WARNING "ad1980: "
"Found AD1981 - only 2/2 IN/OUT Channels "
"supported\n");
}

ac97_write(codec, AC97_MASTER, 0x0000); /* unmute line out volume */
ac97_write(codec, AC97_PCM, 0x0000); /* unmute PCM out volume */
ac97_write(codec, AC97_REC_GAIN, 0x0000);/* unmute record volume */

ad1980_add_controls(codec);
ret = snd_soc_register_card(socdev);
if (ret < 0) {
printk(KERN_ERR "ad1980: failed to register card\n");
goto reset_err;
}

return 0;

reset_err:
snd_soc_free_pcms(socdev);

pcm_err:
snd_soc_free_ac97_codec(codec);

codec_err:
kfree(codec->reg_cache);

cache_err:
kfree(socdev->codec);
socdev->codec = NULL;
return ret;
}

static int ad1980_soc_remove(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->codec;

if (codec == NULL)
return 0;

snd_soc_dapm_free(socdev);
snd_soc_free_pcms(socdev);
snd_soc_free_ac97_codec(codec);
kfree(codec->reg_cache);
kfree(codec);
return 0;
}

struct snd_soc_codec_device soc_codec_dev_ad1980 = {
.probe = ad1980_soc_probe,
.remove = ad1980_soc_remove,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_ad1980);

MODULE_DESCRIPTION("ASoC ad1980 driver");
MODULE_AUTHOR("Roy Huang, Cliff Cai");
MODULE_LICENSE("GPL");
23 changes: 23 additions & 0 deletions sound/soc/codecs/ad1980.h
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@@ -0,0 +1,23 @@
/*
* ad1980.h -- ad1980 Soc Audio driver
*/

#ifndef _AD1980_H
#define _AD1980_H
/* Bit definition of Power-Down Control/Status Register */
#define ADC 0x0001
#define DAC 0x0002
#define ANL 0x0004
#define REF 0x0008
#define PR0 0x0100
#define PR1 0x0200
#define PR2 0x0400
#define PR3 0x0800
#define PR4 0x1000
#define PR5 0x2000
#define PR6 0x4000

extern struct snd_soc_codec_dai ad1980_dai;
extern struct snd_soc_codec_device soc_codec_dev_ad1980;

#endif

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