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ASoC: ac97: Push snd_ac97 pointer to the driver level

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Now that the ASoC core no longer needs a handle to the AC'97 device that is
associated with a CODEC we can remove it from the snd_soc_codec struct and
push it into the individual driver state structs like we do for other
communication buses. Doing so creates a clean separation between the AC'97
bus support and the ASoC core.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2014-11-10 22:41:53 +01:00 committed by Mark Brown
parent bc26321404
commit 358a8bb562
8 changed files with 141 additions and 80 deletions
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5
include/sound/soc.h
View File

@ -499,8 +499,8 @@ int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int reg,
unsigned int mask, unsigned int value);
#ifdef CONFIG_SND_SOC_AC97_BUS
int snd_soc_new_ac97_codec(struct snd_soc_codec *codec);
void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec);
void snd_soc_free_ac97_codec(struct snd_ac97 *ac97);
int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops);
int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
@ -797,7 +797,6 @@ struct snd_soc_codec {
struct list_head card_list;
/* runtime */
struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */
unsigned int cache_bypass:1; /* Suppress access to the cache */
unsigned int suspended:1; /* Codec is in suspend PM state */
unsigned int cache_init:1; /* codec cache has been initialized */

17
sound/soc/codecs/ac97.c
View File

@ -37,10 +37,11 @@ static int ac97_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
return snd_ac97_set_rate(codec->ac97, reg, substream->runtime->rate);
return snd_ac97_set_rate(ac97, reg, substream->runtime->rate);
}
#define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
@ -70,6 +71,7 @@ static struct snd_soc_dai_driver ac97_dai = {
static int ac97_soc_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
struct snd_ac97_bus *ac97_bus;
struct snd_ac97_template ac97_template;
int ret;
@ -81,24 +83,31 @@ static int ac97_soc_probe(struct snd_soc_codec *codec)
return ret;
memset(&ac97_template, 0, sizeof(struct snd_ac97_template));
ret = snd_ac97_mixer(ac97_bus, &ac97_template, &codec->ac97);
ret = snd_ac97_mixer(ac97_bus, &ac97_template, &ac97);
if (ret < 0)
return ret;
snd_soc_codec_set_drvdata(codec, ac97);
return 0;
}
#ifdef CONFIG_PM
static int ac97_soc_suspend(struct snd_soc_codec *codec)
{
snd_ac97_suspend(codec->ac97);
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
snd_ac97_suspend(ac97);
return 0;
}
static int ac97_soc_resume(struct snd_soc_codec *codec)
{
snd_ac97_resume(codec->ac97);
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
snd_ac97_resume(ac97);
return 0;
}

27
sound/soc/codecs/ad1980.c
View File

@ -135,6 +135,7 @@ static const struct snd_soc_dapm_route ad1980_dapm_routes[] = {
static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
switch (reg) {
@ -144,7 +145,7 @@ static unsigned int ac97_read(struct snd_soc_codec *codec,
case AC97_EXTENDED_STATUS:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
return soc_ac97_ops->read(codec->ac97, reg);
return soc_ac97_ops->read(ac97, reg);
default:
reg = reg >> 1;
@ -158,9 +159,10 @@ static unsigned int ac97_read(struct snd_soc_codec *codec,
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
soc_ac97_ops->write(codec->ac97, reg, val);
soc_ac97_ops->write(ac97, reg, val);
reg = reg >> 1;
if (reg < ARRAY_SIZE(ad1980_reg))
cache[reg] = val;
@ -186,16 +188,17 @@ static struct snd_soc_dai_driver ad1980_dai = {
static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
unsigned int retry_cnt = 0;
do {
if (try_warm && soc_ac97_ops->warm_reset) {
soc_ac97_ops->warm_reset(codec->ac97);
soc_ac97_ops->warm_reset(ac97);
if (ac97_read(codec, AC97_RESET) == 0x0090)
return 1;
}
soc_ac97_ops->reset(codec->ac97);
soc_ac97_ops->reset(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
@ -215,16 +218,20 @@ static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
static int ad1980_soc_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
int ret;
u16 vendor_id2;
u16 ext_status;
ret = snd_soc_new_ac97_codec(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to register AC97 codec\n");
ac97 = snd_soc_new_ac97_codec(codec);
if (IS_ERR(ac97)) {
ret = PTR_ERR(ac97);
dev_err(codec->dev, "Failed to register AC97 codec: %d\n", ret);
return ret;
}
snd_soc_codec_set_drvdata(codec, ac97);
ret = ad1980_reset(codec, 0);
if (ret < 0)
goto reset_err;
@ -261,13 +268,15 @@ static int ad1980_soc_probe(struct snd_soc_codec *codec)
return 0;
reset_err:
snd_soc_free_ac97_codec(codec);
snd_soc_free_ac97_codec(ac97);
return ret;
}
static int ad1980_soc_remove(struct snd_soc_codec *codec)
{
snd_soc_free_ac97_codec(codec);
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
snd_soc_free_ac97_codec(ac97);
return 0;
}

38
sound/soc/codecs/stac9766.c
View File

@ -139,18 +139,19 @@ static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
if (reg > AC97_STAC_PAGE0) {
stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
soc_ac97_ops->write(codec->ac97, reg, val);
soc_ac97_ops->write(ac97, reg, val);
stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
return 0;
}
if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
return -EIO;
soc_ac97_ops->write(codec->ac97, reg, val);
soc_ac97_ops->write(ac97, reg, val);
cache[reg / 2] = val;
return 0;
}
@ -158,11 +159,12 @@ static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 val = 0, *cache = codec->reg_cache;
if (reg > AC97_STAC_PAGE0) {
stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
val = soc_ac97_ops->read(codec->ac97, reg - AC97_STAC_PAGE0);
val = soc_ac97_ops->read(ac97, reg - AC97_STAC_PAGE0);
stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
return val;
}
@ -173,7 +175,7 @@ static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
reg == AC97_VENDOR_ID2) {
val = soc_ac97_ops->read(codec->ac97, reg);
val = soc_ac97_ops->read(ac97, reg);
return val;
}
return cache[reg / 2];
@ -240,15 +242,17 @@ static int stac9766_set_bias_level(struct snd_soc_codec *codec,
static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
if (try_warm && soc_ac97_ops->warm_reset) {
soc_ac97_ops->warm_reset(codec->ac97);
soc_ac97_ops->warm_reset(ac97);
if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
return 1;
}
soc_ac97_ops->reset(codec->ac97);
soc_ac97_ops->reset(ac97);
if (soc_ac97_ops->warm_reset)
soc_ac97_ops->warm_reset(codec->ac97);
soc_ac97_ops->warm_reset(ac97);
if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
return -EIO;
return 0;
@ -262,6 +266,7 @@ static int stac9766_codec_suspend(struct snd_soc_codec *codec)
static int stac9766_codec_resume(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 id, reset;
reset = 0;
@ -271,8 +276,8 @@ reset:
printk(KERN_ERR "stac9766 failed to resume");
return -EIO;
}
codec->ac97->bus->ops->warm_reset(codec->ac97);
id = soc_ac97_ops->read(codec->ac97, AC97_VENDOR_ID2);
ac97->bus->ops->warm_reset(ac97);
id = soc_ac97_ops->read(ac97, AC97_VENDOR_ID2);
if (id != 0x4c13) {
stac9766_reset(codec, 0);
reset++;
@ -332,11 +337,14 @@ static struct snd_soc_dai_driver stac9766_dai[] = {
static int stac9766_codec_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
int ret = 0;
ret = snd_soc_new_ac97_codec(codec);
if (ret < 0)
goto codec_err;
ac97 = snd_soc_new_ac97_codec(codec);
if (IS_ERR(ac97))
return PTR_ERR(ac97);
snd_soc_codec_set_drvdata(codec, ac97);
/* do a cold reset for the controller and then try
* a warm reset followed by an optional cold reset for codec */
@ -355,13 +363,15 @@ static int stac9766_codec_probe(struct snd_soc_codec *codec)
return 0;
codec_err:
snd_soc_free_ac97_codec(codec);
snd_soc_free_ac97_codec(ac97);
return ret;
}
static int stac9766_codec_remove(struct snd_soc_codec *codec)
{
snd_soc_free_ac97_codec(codec);
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
snd_soc_free_ac97_codec(ac97);
return 0;
}

31
sound/soc/codecs/wm9705.c
View File

@ -203,13 +203,14 @@ static const struct snd_soc_dapm_route wm9705_audio_map[] = {
/* We use a register cache to enhance read performance. */
static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
switch (reg) {
case AC97_RESET:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
return soc_ac97_ops->read(codec->ac97, reg);
return soc_ac97_ops->read(ac97, reg);
default:
reg = reg >> 1;
@ -223,9 +224,10 @@ 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)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
soc_ac97_ops->write(codec->ac97, reg, val);
soc_ac97_ops->write(ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9705_reg)))
cache[reg] = val;
@ -293,8 +295,10 @@ static struct snd_soc_dai_driver wm9705_dai[] = {
static int wm9705_reset(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
if (soc_ac97_ops->reset) {
soc_ac97_ops->reset(codec->ac97);
soc_ac97_ops->reset(ac97);
if (ac97_read(codec, 0) == wm9705_reg[0])
return 0; /* Success */
}
@ -307,13 +311,16 @@ static int wm9705_reset(struct snd_soc_codec *codec)
#ifdef CONFIG_PM
static int wm9705_soc_suspend(struct snd_soc_codec *codec)
{
soc_ac97_ops->write(codec->ac97, AC97_POWERDOWN, 0xffff);
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff);
return 0;
}
static int wm9705_soc_resume(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
int i, ret;
u16 *cache = codec->reg_cache;
@ -322,7 +329,7 @@ static int wm9705_soc_resume(struct snd_soc_codec *codec)
return ret;
for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
soc_ac97_ops->write(codec->ac97, i, cache[i>>1]);
soc_ac97_ops->write(ac97, i, cache[i>>1]);
}
return 0;
@ -334,14 +341,18 @@ static int wm9705_soc_resume(struct snd_soc_codec *codec)
static int wm9705_soc_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
int ret = 0;
ret = snd_soc_new_ac97_codec(codec);
if (ret < 0) {
ac97 = snd_soc_new_ac97_codec(codec);
if (IS_ERR(ac97)) {
ret = PTR_ERR(ac97);
dev_err(codec->dev, "Failed to register AC97 codec\n");
return ret;
}
snd_soc_codec_set_drvdata(codec, ac97);
ret = wm9705_reset(codec);
if (ret)
goto reset_err;
@ -349,13 +360,15 @@ static int wm9705_soc_probe(struct snd_soc_codec *codec)
return 0;
reset_err:
snd_soc_free_ac97_codec(codec);
snd_soc_free_ac97_codec(ac97);
return ret;
}
static int wm9705_soc_remove(struct snd_soc_codec *codec)
{
snd_soc_free_ac97_codec(codec);
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
snd_soc_free_ac97_codec(ac97);
return 0;
}

32
sound/soc/codecs/wm9712.c
View File

@ -24,6 +24,7 @@
#include "wm9712.h"
struct wm9712_priv {
struct snd_ac97 *ac97;
unsigned int hp_mixer[2];
struct mutex lock;
};
@ -484,12 +485,13 @@ static const struct snd_soc_dapm_route wm9712_audio_map[] = {
static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
reg == AC97_VENDOR_ID1 || reg == AC97_VENDOR_ID2 ||
reg == AC97_REC_GAIN)
return soc_ac97_ops->read(codec->ac97, reg);
return soc_ac97_ops->read(wm9712->ac97, reg);
else {
reg = reg >> 1;
@ -503,9 +505,10 @@ static unsigned int ac97_read(struct snd_soc_codec *codec,
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
soc_ac97_ops->write(codec->ac97, reg, val);
soc_ac97_ops->write(wm9712->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9712_reg)))
cache[reg] = val;
@ -613,15 +616,17 @@ static int wm9712_set_bias_level(struct snd_soc_codec *codec,
static int wm9712_reset(struct snd_soc_codec *codec, int try_warm)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
if (try_warm && soc_ac97_ops->warm_reset) {
soc_ac97_ops->warm_reset(codec->ac97);
soc_ac97_ops->warm_reset(wm9712->ac97);
if (ac97_read(codec, 0) == wm9712_reg[0])
return 1;
}
soc_ac97_ops->reset(codec->ac97);
soc_ac97_ops->reset(wm9712->ac97);
if (soc_ac97_ops->warm_reset)
soc_ac97_ops->warm_reset(codec->ac97);
soc_ac97_ops->warm_reset(wm9712->ac97);
if (ac97_read(codec, 0) != wm9712_reg[0])
goto err;
return 0;
@ -639,6 +644,7 @@ static int wm9712_soc_suspend(struct snd_soc_codec *codec)
static int wm9712_soc_resume(struct snd_soc_codec *codec)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
int i, ret;
u16 *cache = codec->reg_cache;
@ -654,7 +660,7 @@ static int wm9712_soc_resume(struct snd_soc_codec *codec)
if (i == AC97_INT_PAGING || i == AC97_POWERDOWN ||
(i > 0x58 && i != 0x5c))
continue;
soc_ac97_ops->write(codec->ac97, i, cache[i>>1]);
soc_ac97_ops->write(wm9712->ac97, i, cache[i>>1]);
}
}
@ -663,11 +669,13 @@ static int wm9712_soc_resume(struct snd_soc_codec *codec)
static int wm9712_soc_probe(struct snd_soc_codec *codec)
{
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
int ret = 0;
ret = snd_soc_new_ac97_codec(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to register AC97 codec\n");
wm9712->ac97 = snd_soc_new_ac97_codec(codec);
if (IS_ERR(wm9712->ac97)) {
ret = PTR_ERR(wm9712->ac97);
dev_err(codec->dev, "Failed to register AC97 codec: %d\n", ret);
return ret;
}
@ -683,13 +691,15 @@ static int wm9712_soc_probe(struct snd_soc_codec *codec)
return 0;
reset_err:
snd_soc_free_ac97_codec(codec);
snd_soc_free_ac97_codec(wm9712->ac97);
return ret;
}
static int wm9712_soc_remove(struct snd_soc_codec *codec)
{
snd_soc_free_ac97_codec(codec);
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
snd_soc_free_ac97_codec(wm9712->ac97);
return 0;
}

31
sound/soc/codecs/wm9713.c
View File

@ -30,6 +30,7 @@
#include "wm9713.h"
struct wm9713_priv {
struct snd_ac97 *ac97;
u32 pll_in; /* PLL input frequency */
unsigned int hp_mixer[2];
struct mutex lock;
@ -674,12 +675,13 @@ static const struct snd_soc_dapm_route wm9713_audio_map[] = {
static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
reg == AC97_VENDOR_ID1 || reg == AC97_VENDOR_ID2 ||
reg == AC97_CD)
return soc_ac97_ops->read(codec->ac97, reg);
return soc_ac97_ops->read(wm9713->ac97, reg);
else {
reg = reg >> 1;
@ -693,8 +695,10 @@ static unsigned int ac97_read(struct snd_soc_codec *codec,
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec);
u16 *cache = codec->reg_cache;
soc_ac97_ops->write(codec->ac97, reg, val);
soc_ac97_ops->write(wm9713->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9713_reg)))
cache[reg] = val;
@ -1121,15 +1125,17 @@ static struct snd_soc_dai_driver wm9713_dai[] = {
int wm9713_reset(struct snd_soc_codec *codec, int try_warm)
{
struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec);
if (try_warm && soc_ac97_ops->warm_reset) {
soc_ac97_ops->warm_reset(codec->ac97);
soc_ac97_ops->warm_reset(wm9713->ac97);
if (ac97_read(codec, 0) == wm9713_reg[0])
return 1;
}
soc_ac97_ops->reset(codec->ac97);
soc_ac97_ops->reset(wm9713->ac97);
if (soc_ac97_ops->warm_reset)
soc_ac97_ops->warm_reset(codec->ac97);
soc_ac97_ops->warm_reset(wm9713->ac97);
if (ac97_read(codec, 0) != wm9713_reg[0]) {
dev_err(codec->dev, "Failed to reset: AC97 link error\n");
return -EIO;
@ -1207,7 +1213,7 @@ static int wm9713_soc_resume(struct snd_soc_codec *codec)
if (i == AC97_POWERDOWN || i == AC97_EXTENDED_MID ||
i == AC97_EXTENDED_MSTATUS || i > 0x66)
continue;
soc_ac97_ops->write(codec->ac97, i, cache[i>>1]);
soc_ac97_ops->write(wm9713->ac97, i, cache[i>>1]);
}
}
@ -1216,11 +1222,12 @@ static int wm9713_soc_resume(struct snd_soc_codec *codec)
static int wm9713_soc_probe(struct snd_soc_codec *codec)
{
struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec);
int ret = 0, reg;
ret = snd_soc_new_ac97_codec(codec);
if (ret < 0)
return ret;
wm9713->ac97 = snd_soc_new_ac97_codec(codec);
if (IS_ERR(wm9713->ac97))
return PTR_ERR(wm9713->ac97);
/* do a cold reset for the controller and then try
* a warm reset followed by an optional cold reset for codec */
@ -1238,13 +1245,15 @@ static int wm9713_soc_probe(struct snd_soc_codec *codec)
return 0;
reset_err:
snd_soc_free_ac97_codec(codec);
snd_soc_free_ac97_codec(wm9713->ac97);
return ret;
}
static int wm9713_soc_remove(struct snd_soc_codec *codec)
{
snd_soc_free_ac97_codec(codec);
struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec);
snd_soc_free_ac97_codec(wm9713->ac97);
return 0;
}

40
sound/soc/soc-ac97.c
View File

@ -53,30 +53,33 @@ static void soc_ac97_device_release(struct device *dev)
*
* Initialises AC97 codec resources for use by ad-hoc devices only.
*/
int snd_soc_new_ac97_codec(struct snd_soc_codec *codec)
struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
int ret;
codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
if (codec->ac97 == NULL)
return -ENOMEM;
ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
if (ac97 == NULL)
return ERR_PTR(-ENOMEM);
codec->ac97->bus = &soc_ac97_bus;
codec->ac97->num = 0;
ac97->bus = &soc_ac97_bus;
ac97->num = 0;
codec->ac97->dev.bus = &ac97_bus_type;
codec->ac97->dev.parent = codec->component.card->dev;
codec->ac97->dev.release = soc_ac97_device_release;
ac97->dev.bus = &ac97_bus_type;
ac97->dev.parent = codec->component.card->dev;
ac97->dev.release = soc_ac97_device_release;
dev_set_name(&codec->ac97->dev, "%d-%d:%s",
dev_set_name(&ac97->dev, "%d-%d:%s",
codec->component.card->snd_card->number, 0,
codec->component.name);
ret = device_register(&codec->ac97->dev);
if (ret)
put_device(&codec->ac97->dev);
ret = device_register(&ac97->dev);
if (ret) {
put_device(&ac97->dev);
return ERR_PTR(ret);
}
return ret;
return ac97;
}
EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
@ -86,12 +89,11 @@ EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
*
* Frees AC97 codec device resources.
*/
void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
void snd_soc_free_ac97_codec(struct snd_ac97 *ac97)
{
device_del(&codec->ac97->dev);
codec->ac97->bus = NULL;
put_device(&codec->ac97->dev);
codec->ac97 = NULL;
device_del(&ac97->dev);
ac97->bus = NULL;
put_device(&ac97->dev);
}
EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);