ASoC: ac97: Support multi-platform AC'97
Currently we can only have a single platform built in with AC'97 support
due to the use of a global variable to provide the bus operations. Fix
this by making that variable a pointer and having the bus drivers set the
operations prior to registering.
This is not a particularly good or nice approach but it avoids blocking
multiplatform and a real fix involves fixing the fairly deep problems
with AC'97 support - we should be converting it to a real bus.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 85c1522..6eabee7 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -340,7 +340,7 @@
typedef int (*hw_write_t)(void *,const char* ,int);
-extern struct snd_ac97_bus_ops soc_ac97_ops;
+extern struct snd_ac97_bus_ops *soc_ac97_ops;
enum snd_soc_control_type {
SND_SOC_I2C = 1,
@@ -467,6 +467,8 @@
struct snd_ac97_bus_ops *ops, int num);
void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
+int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops);
+
/*
*Controls
*/
diff --git a/sound/soc/au1x/ac97c.c b/sound/soc/au1x/ac97c.c
index a51dabe..d6f7694 100644
--- a/sound/soc/au1x/ac97c.c
+++ b/sound/soc/au1x/ac97c.c
@@ -179,13 +179,12 @@
}
/* AC97 controller operations */
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops ac97c_bus_ops = {
.read = au1xac97c_ac97_read,
.write = au1xac97c_ac97_write,
.reset = au1xac97c_ac97_cold_reset,
.warm_reset = au1xac97c_ac97_warm_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops); /* globals be gone! */
static int alchemy_ac97c_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
@@ -272,6 +271,10 @@
platform_set_drvdata(pdev, ctx);
+ ret = snd_soc_set_ac97_ops(&ac97c_bus_ops);
+ if (ret)
+ return ret;
+
ret = snd_soc_register_component(&pdev->dev, &au1xac97c_component,
&au1xac97c_dai_driver, 1);
if (ret)
diff --git a/sound/soc/au1x/psc-ac97.c b/sound/soc/au1x/psc-ac97.c
index a97ba13..a822ab8 100644
--- a/sound/soc/au1x/psc-ac97.c
+++ b/sound/soc/au1x/psc-ac97.c
@@ -201,13 +201,12 @@
}
/* AC97 controller operations */
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops psc_ac97_ops = {
.read = au1xpsc_ac97_read,
.write = au1xpsc_ac97_write,
.reset = au1xpsc_ac97_cold_reset,
.warm_reset = au1xpsc_ac97_warm_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int au1xpsc_ac97_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
@@ -417,6 +416,10 @@
platform_set_drvdata(pdev, wd);
+ ret = snd_soc_set_ac97_ops(&psc_ac97_ops);
+ if (ret)
+ return ret;
+
ret = snd_soc_register_component(&pdev->dev, &au1xpsc_ac97_component,
&wd->dai_drv, 1);
if (ret)
diff --git a/sound/soc/blackfin/bf5xx-ac97.c b/sound/soc/blackfin/bf5xx-ac97.c
index 024e2db..c5af677 100644
--- a/sound/soc/blackfin/bf5xx-ac97.c
+++ b/sound/soc/blackfin/bf5xx-ac97.c
@@ -198,13 +198,12 @@
#endif
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops bf5xx_ac97_ops = {
.read = bf5xx_ac97_read,
.write = bf5xx_ac97_write,
.warm_reset = bf5xx_ac97_warm_reset,
.reset = bf5xx_ac97_cold_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
#ifdef CONFIG_PM
static int bf5xx_ac97_suspend(struct snd_soc_dai *dai)
@@ -336,6 +335,12 @@
goto sport_config_err;
}
+ ret = snd_soc_set_ac97_ops(&bf5xx_ac97_ops);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to set AC'97 ops: %d\n", ret);
+ goto sport_config_err;
+ }
+
ret = snd_soc_register_component(&pdev->dev, &bfin_ac97_component,
&bfin_ac97_dai, 1);
if (ret) {
@@ -350,6 +355,7 @@
sport_config_err:
sport_done(sport_handle);
sport_err:
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -360,6 +366,7 @@
snd_soc_unregister_component(&pdev->dev);
sport_done(sport_handle);
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
diff --git a/sound/soc/cirrus/ep93xx-ac97.c b/sound/soc/cirrus/ep93xx-ac97.c
index d49e055..4bc9490 100644
--- a/sound/soc/cirrus/ep93xx-ac97.c
+++ b/sound/soc/cirrus/ep93xx-ac97.c
@@ -237,13 +237,12 @@
return IRQ_HANDLED;
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops ep93xx_ac97_ops = {
.read = ep93xx_ac97_read,
.write = ep93xx_ac97_write,
.reset = ep93xx_ac97_cold_reset,
.warm_reset = ep93xx_ac97_warm_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int ep93xx_ac97_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
@@ -395,6 +394,10 @@
ep93xx_ac97_info = info;
platform_set_drvdata(pdev, info);
+ ret = snd_soc_set_ac97_ops(&ep93xx_ac97_ops);
+ if (ret)
+ goto fail;
+
ret = snd_soc_register_component(&pdev->dev, &ep93xx_ac97_component,
&ep93xx_ac97_dai, 1);
if (ret)
@@ -405,6 +408,7 @@
fail:
platform_set_drvdata(pdev, NULL);
ep93xx_ac97_info = NULL;
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -420,6 +424,8 @@
platform_set_drvdata(pdev, NULL);
ep93xx_ac97_info = NULL;
+ snd_soc_set_ac97_ops(NULL);
+
return 0;
}
diff --git a/sound/soc/codecs/ac97.c b/sound/soc/codecs/ac97.c
index ef2ae32..ec73518 100644
--- a/sound/soc/codecs/ac97.c
+++ b/sound/soc/codecs/ac97.c
@@ -62,13 +62,13 @@
static unsigned int ac97_read(struct snd_soc_codec *codec,
unsigned int reg)
{
- return soc_ac97_ops.read(codec->ac97, reg);
+ return soc_ac97_ops->read(codec->ac97, reg);
}
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
- soc_ac97_ops.write(codec->ac97, reg, val);
+ soc_ac97_ops->write(codec->ac97, reg, val);
return 0;
}
@@ -79,7 +79,8 @@
int ret;
/* add codec as bus device for standard ac97 */
- ret = snd_ac97_bus(codec->card->snd_card, 0, &soc_ac97_ops, NULL, &ac97_bus);
+ ret = snd_ac97_bus(codec->card->snd_card, 0, soc_ac97_ops, NULL,
+ &ac97_bus);
if (ret < 0)
return ret;
diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
index f385342..89fcf7d 100644
--- a/sound/soc/codecs/ad1980.c
+++ b/sound/soc/codecs/ad1980.c
@@ -108,7 +108,7 @@
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(codec->ac97, reg);
default:
reg = reg >> 1;
@@ -124,7 +124,7 @@
{
u16 *cache = codec->reg_cache;
- soc_ac97_ops.write(codec->ac97, reg, val);
+ soc_ac97_ops->write(codec->ac97, reg, val);
reg = reg >> 1;
if (reg < ARRAY_SIZE(ad1980_reg))
cache[reg] = val;
@@ -154,13 +154,13 @@
u16 retry_cnt = 0;
retry:
- if (try_warm && soc_ac97_ops.warm_reset) {
- soc_ac97_ops.warm_reset(codec->ac97);
+ 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);
+ 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)*/
@@ -186,7 +186,7 @@
printk(KERN_INFO "AD1980 SoC Audio Codec\n");
- ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+ ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
if (ret < 0) {
printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
return ret;
diff --git a/sound/soc/codecs/stac9766.c b/sound/soc/codecs/stac9766.c
index cbc7ae3..a5455c1 100644
--- a/sound/soc/codecs/stac9766.c
+++ b/sound/soc/codecs/stac9766.c
@@ -143,14 +143,14 @@
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(codec->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(codec->ac97, reg, val);
cache[reg / 2] = val;
return 0;
}
@@ -162,7 +162,7 @@
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(codec->ac97, reg - AC97_STAC_PAGE0);
stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
return val;
}
@@ -173,7 +173,7 @@
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(codec->ac97, reg);
return val;
}
return cache[reg / 2];
@@ -240,15 +240,15 @@
static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
{
- if (try_warm && soc_ac97_ops.warm_reset) {
- soc_ac97_ops.warm_reset(codec->ac97);
+ if (try_warm && soc_ac97_ops->warm_reset) {
+ soc_ac97_ops->warm_reset(codec->ac97);
if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
return 1;
}
- soc_ac97_ops.reset(codec->ac97);
- if (soc_ac97_ops.warm_reset)
- soc_ac97_ops.warm_reset(codec->ac97);
+ soc_ac97_ops->reset(codec->ac97);
+ if (soc_ac97_ops->warm_reset)
+ soc_ac97_ops->warm_reset(codec->ac97);
if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
return -EIO;
return 0;
@@ -272,7 +272,7 @@
return -EIO;
}
codec->ac97->bus->ops->warm_reset(codec->ac97);
- id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2);
+ id = soc_ac97_ops->read(codec->ac97, AC97_VENDOR_ID2);
if (id != 0x4c13) {
stac9766_reset(codec, 0);
reset++;
@@ -336,7 +336,7 @@
{
int ret = 0;
- ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+ ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
if (ret < 0)
goto codec_err;
diff --git a/sound/soc/codecs/wm9705.c b/sound/soc/codecs/wm9705.c
index a5fc61d..70ce6793 100644
--- a/sound/soc/codecs/wm9705.c
+++ b/sound/soc/codecs/wm9705.c
@@ -209,7 +209,7 @@
case AC97_RESET:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
- return soc_ac97_ops.read(codec->ac97, reg);
+ return soc_ac97_ops->read(codec->ac97, reg);
default:
reg = reg >> 1;
@@ -225,7 +225,7 @@
{
u16 *cache = codec->reg_cache;
- soc_ac97_ops.write(codec->ac97, reg, val);
+ soc_ac97_ops->write(codec->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9705_reg)))
cache[reg] = val;
@@ -294,8 +294,8 @@
static int wm9705_reset(struct snd_soc_codec *codec)
{
- if (soc_ac97_ops.reset) {
- soc_ac97_ops.reset(codec->ac97);
+ if (soc_ac97_ops->reset) {
+ soc_ac97_ops->reset(codec->ac97);
if (ac97_read(codec, 0) == wm9705_reg[0])
return 0; /* Success */
}
@@ -306,7 +306,7 @@
#ifdef CONFIG_PM
static int wm9705_soc_suspend(struct snd_soc_codec *codec)
{
- soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
+ soc_ac97_ops->write(codec->ac97, AC97_POWERDOWN, 0xffff);
return 0;
}
@@ -323,7 +323,7 @@
}
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(codec->ac97, i, cache[i>>1]);
}
return 0;
@@ -337,7 +337,7 @@
{
int ret = 0;
- ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+ ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
if (ret < 0) {
printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
return ret;
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 8e9a6a3..c5eb746 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -455,7 +455,7 @@
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(codec->ac97, reg);
else {
reg = reg >> 1;
@@ -472,7 +472,7 @@
u16 *cache = codec->reg_cache;
if (reg < 0x7c)
- soc_ac97_ops.write(codec->ac97, reg, val);
+ soc_ac97_ops->write(codec->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9712_reg)))
cache[reg] = val;
@@ -581,15 +581,15 @@
static int wm9712_reset(struct snd_soc_codec *codec, int try_warm)
{
- if (try_warm && soc_ac97_ops.warm_reset) {
- soc_ac97_ops.warm_reset(codec->ac97);
+ if (try_warm && soc_ac97_ops->warm_reset) {
+ soc_ac97_ops->warm_reset(codec->ac97);
if (ac97_read(codec, 0) == wm9712_reg[0])
return 1;
}
- soc_ac97_ops.reset(codec->ac97);
- if (soc_ac97_ops.warm_reset)
- soc_ac97_ops.warm_reset(codec->ac97);
+ soc_ac97_ops->reset(codec->ac97);
+ if (soc_ac97_ops->warm_reset)
+ soc_ac97_ops->warm_reset(codec->ac97);
if (ac97_read(codec, 0) != wm9712_reg[0])
goto err;
return 0;
@@ -624,7 +624,7 @@
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(codec->ac97, i, cache[i>>1]);
}
}
@@ -635,7 +635,7 @@
{
int ret = 0;
- ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+ ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
if (ret < 0) {
printk(KERN_ERR "wm9712: failed to register AC97 codec\n");
return ret;
diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c
index f7afa68..a53e175 100644
--- a/sound/soc/codecs/wm9713.c
+++ b/sound/soc/codecs/wm9713.c
@@ -652,7 +652,7 @@
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(codec->ac97, reg);
else {
reg = reg >> 1;
@@ -668,7 +668,7 @@
{
u16 *cache = codec->reg_cache;
if (reg < 0x7c)
- soc_ac97_ops.write(codec->ac97, reg, val);
+ soc_ac97_ops->write(codec->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9713_reg)))
cache[reg] = val;
@@ -1095,15 +1095,15 @@
int wm9713_reset(struct snd_soc_codec *codec, int try_warm)
{
- if (try_warm && soc_ac97_ops.warm_reset) {
- soc_ac97_ops.warm_reset(codec->ac97);
+ if (try_warm && soc_ac97_ops->warm_reset) {
+ soc_ac97_ops->warm_reset(codec->ac97);
if (ac97_read(codec, 0) == wm9713_reg[0])
return 1;
}
- soc_ac97_ops.reset(codec->ac97);
- if (soc_ac97_ops.warm_reset)
- soc_ac97_ops.warm_reset(codec->ac97);
+ soc_ac97_ops->reset(codec->ac97);
+ if (soc_ac97_ops->warm_reset)
+ soc_ac97_ops->warm_reset(codec->ac97);
if (ac97_read(codec, 0) != wm9713_reg[0])
return -EIO;
return 0;
@@ -1180,7 +1180,7 @@
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(codec->ac97, i, cache[i>>1]);
}
}
@@ -1197,7 +1197,7 @@
return -ENOMEM;
snd_soc_codec_set_drvdata(codec, wm9713);
- ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+ ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
if (ret < 0)
goto codec_err;
diff --git a/sound/soc/fsl/imx-ssi.c b/sound/soc/fsl/imx-ssi.c
index c6fa03e..bd40849 100644
--- a/sound/soc/fsl/imx-ssi.c
+++ b/sound/soc/fsl/imx-ssi.c
@@ -501,13 +501,12 @@
imx_ssi_ac97_read(ac97, 0);
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops imx_ssi_ac97_ops = {
.read = imx_ssi_ac97_read,
.write = imx_ssi_ac97_write,
.reset = imx_ssi_ac97_reset,
.warm_reset = imx_ssi_ac97_warm_reset
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int imx_ssi_probe(struct platform_device *pdev)
{
@@ -583,6 +582,12 @@
platform_set_drvdata(pdev, ssi);
+ ret = snd_soc_set_ac97_ops(&imx_ssi_ac97_ops);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to set AC'97 ops: %d\n", ret);
+ goto failed_register;
+ }
+
ret = snd_soc_register_component(&pdev->dev, &imx_component,
dai, 1);
if (ret) {
@@ -630,6 +635,7 @@
release_mem_region(res->start, resource_size(res));
clk_disable_unprepare(ssi->clk);
failed_clk:
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -649,6 +655,7 @@
release_mem_region(res->start, resource_size(res));
clk_disable_unprepare(ssi->clk);
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index 4141b35..3ef7a0c 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -131,13 +131,12 @@
psc_ac97_warm_reset(ac97);
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops psc_ac97_ops = {
.read = psc_ac97_read,
.write = psc_ac97_write,
.reset = psc_ac97_cold_reset,
.warm_reset = psc_ac97_warm_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int psc_ac97_hw_analog_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
@@ -290,6 +289,12 @@
if (rc != 0)
return rc;
+ rc = snd_soc_set_ac97_ops(&psc_ac97_ops);
+ if (rc != 0) {
+ dev_err(&op->dev, "Failed to set AC'97 ops: %d\n", ret);
+ return rc;
+ }
+
rc = snd_soc_register_component(&op->dev, &psc_ac97_component,
psc_ac97_dai, ARRAY_SIZE(psc_ac97_dai));
if (rc != 0) {
@@ -318,6 +323,7 @@
{
mpc5200_audio_dma_destroy(op);
snd_soc_unregister_component(&op->dev);
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
index 8dea4c1..f4c2417 100644
--- a/sound/soc/nuc900/nuc900-ac97.c
+++ b/sound/soc/nuc900/nuc900-ac97.c
@@ -197,13 +197,12 @@
}
/* AC97 controller operations */
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops nuc900_ac97_ops = {
.read = nuc900_ac97_read,
.write = nuc900_ac97_write,
.reset = nuc900_ac97_cold_reset,
.warm_reset = nuc900_ac97_warm_reset,
-}
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
+};
static int nuc900_ac97_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
@@ -356,6 +355,10 @@
nuc900_ac97_data = nuc900_audio;
+ ret = snd_soc_set_ac97_ops(&nuc900_ac97_ops);
+ if (ret)
+ goto out;
+
ret = snd_soc_register_component(&pdev->dev, &nuc900_ac97_component,
&nuc900_ac97_dai, 1);
if (ret)
@@ -367,6 +370,7 @@
return 0;
out:
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -375,6 +379,7 @@
snd_soc_unregister_component(&pdev->dev);
nuc900_ac97_data = NULL;
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
diff --git a/sound/soc/pxa/pxa2xx-ac97.c b/sound/soc/pxa/pxa2xx-ac97.c
index 57ea8e6..a3c22ba 100644
--- a/sound/soc/pxa/pxa2xx-ac97.c
+++ b/sound/soc/pxa/pxa2xx-ac97.c
@@ -41,13 +41,12 @@
pxa2xx_ac97_finish_reset(ac97);
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
.read = pxa2xx_ac97_read,
.write = pxa2xx_ac97_write,
.warm_reset = pxa2xx_ac97_warm_reset,
.reset = pxa2xx_ac97_cold_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
.name = "AC97 PCM Stereo out",
@@ -244,6 +243,10 @@
return -ENXIO;
}
+ ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops);
+ if (ret != 0)
+ return ret;
+
/* Punt most of the init to the SoC probe; we may need the machine
* driver to do interesting things with the clocking to get us up
* and running.
@@ -255,6 +258,7 @@
static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
{
snd_soc_unregister_component(&pdev->dev);
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
diff --git a/sound/soc/samsung/ac97.c b/sound/soc/samsung/ac97.c
index 04d7fd4..2dd623f 100644
--- a/sound/soc/samsung/ac97.c
+++ b/sound/soc/samsung/ac97.c
@@ -214,13 +214,12 @@
return IRQ_HANDLED;
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops s3c_ac97_ops = {
.read = s3c_ac97_read,
.write = s3c_ac97_write,
.warm_reset = s3c_ac97_warm_reset,
.reset = s3c_ac97_cold_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int s3c_ac97_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
@@ -452,6 +451,12 @@
goto err4;
}
+ ret = snd_soc_set_ac97_ops(&s3c_ac97_ops);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to set AC'97 ops: %d\n", ret);
+ goto err4;
+ }
+
ret = snd_soc_register_component(&pdev->dev, &s3c_ac97_component,
s3c_ac97_dai, ARRAY_SIZE(s3c_ac97_dai));
if (ret)
@@ -472,7 +477,7 @@
err3:
clk_disable_unprepare(s3c_ac97.ac97_clk);
err2:
-
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -488,6 +493,7 @@
free_irq(irq_res->start, NULL);
clk_disable_unprepare(s3c_ac97.ac97_clk);
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
diff --git a/sound/soc/sh/hac.c b/sound/soc/sh/hac.c
index af19f77..0af2e4d 100644
--- a/sound/soc/sh/hac.c
+++ b/sound/soc/sh/hac.c
@@ -227,13 +227,12 @@
hac_ac97_warmrst(ac97);
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops hac_ac97_ops = {
.read = hac_ac97_read,
.write = hac_ac97_write,
.reset = hac_ac97_coldrst,
.warm_reset = hac_ac97_warmrst,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int hac_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
@@ -316,6 +315,10 @@
static int hac_soc_platform_probe(struct platform_device *pdev)
{
+ ret = snd_soc_set_ac97_ops(&hac_ac97_ops);
+ if (ret != 0)
+ return ret;
+
return snd_soc_register_component(&pdev->dev, &sh4_hac_component,
sh4_hac_dai, ARRAY_SIZE(sh4_hac_dai));
}
@@ -323,6 +326,7 @@
static int hac_soc_platform_remove(struct platform_device *pdev)
{
snd_soc_unregister_component(&pdev->dev);
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index d56bbea..562d72e 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2079,6 +2079,22 @@
}
EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
+struct snd_ac97_bus_ops *soc_ac97_ops;
+
+int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
+{
+ if (ops == soc_ac97_ops)
+ return 0;
+
+ if (soc_ac97_ops && ops)
+ return -EBUSY;
+
+ soc_ac97_ops = ops;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
+
/**
* snd_soc_free_ac97_codec - free AC97 codec device
* @codec: audio codec
diff --git a/sound/soc/tegra/tegra20_ac97.c b/sound/soc/tegra/tegra20_ac97.c
index 48037f7..f52eab6 100644
--- a/sound/soc/tegra/tegra20_ac97.c
+++ b/sound/soc/tegra/tegra20_ac97.c
@@ -142,13 +142,12 @@
} while (!time_after(jiffies, timeout));
}
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops tegra20_ac97_ops = {
.read = tegra20_ac97_codec_read,
.write = tegra20_ac97_codec_write,
.reset = tegra20_ac97_codec_reset,
.warm_reset = tegra20_ac97_codec_warm_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static inline void tegra20_ac97_start_playback(struct tegra20_ac97 *ac97)
{
@@ -409,6 +408,12 @@
goto err_asoc_utils_fini;
}
+ ret = snd_soc_set_ac97_ops(&tegra20_ac97_ops);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set AC'97 ops: %d\n", ret);
+ goto err_asoc_utils_fini;
+ }
+
ret = snd_soc_register_component(&pdev->dev, &tegra20_ac97_component,
&tegra20_ac97_dai, 1);
if (ret) {
@@ -436,6 +441,7 @@
tegra_asoc_utils_fini(&ac97->util_data);
err_clk_put:
err:
+ snd_soc_set_ac97_ops(NULL);
return ret;
}
@@ -450,6 +456,8 @@
clk_disable_unprepare(ac97->clk_ac97);
+ snd_soc_set_ac97_ops(NULL);
+
return 0;
}
diff --git a/sound/soc/txx9/txx9aclc-ac97.c b/sound/soc/txx9/txx9aclc-ac97.c
index 8ee8d42..4bcce8a 100644
--- a/sound/soc/txx9/txx9aclc-ac97.c
+++ b/sound/soc/txx9/txx9aclc-ac97.c
@@ -119,12 +119,11 @@
}
/* AC97 controller operations */
-struct snd_ac97_bus_ops soc_ac97_ops = {
+static struct snd_ac97_bus_ops txx9aclc_ac97_ops = {
.read = txx9aclc_ac97_read,
.write = txx9aclc_ac97_write,
.reset = txx9aclc_ac97_cold_reset,
};
-EXPORT_SYMBOL_GPL(soc_ac97_ops);
static irqreturn_t txx9aclc_ac97_irq(int irq, void *dev_id)
{
@@ -206,6 +205,10 @@
if (err < 0)
return err;
+ err = snd_soc_set_ac97_ops(&txx9aclc_ac97_ops);
+ if (err < 0)
+ return err;
+
return snd_soc_register_component(&pdev->dev, &txx9aclc_ac97_component,
&txx9aclc_ac97_dai, 1);
}
@@ -213,6 +216,7 @@
static int txx9aclc_ac97_dev_remove(struct platform_device *pdev)
{
snd_soc_unregister_component(&pdev->dev);
+ snd_soc_set_ac97_ops(NULL);
return 0;
}
