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Diffstat (limited to 'sound/soc/au1x/psc-ac97.c')
-rw-r--r--sound/soc/au1x/psc-ac97.c71
1 files changed, 37 insertions, 34 deletions
diff --git a/sound/soc/au1x/psc-ac97.c b/sound/soc/au1x/psc-ac97.c
index d14a5a91a465..d0db66f24a00 100644
--- a/sound/soc/au1x/psc-ac97.c
+++ b/sound/soc/au1x/psc-ac97.c
@@ -10,9 +10,6 @@
*
* Au1xxx-PSC AC97 glue.
*
- * NOTE: all of these drivers can only work with a SINGLE instance
- * of a PSC. Multiple independent audio devices are impossible
- * with ASoC v1.
*/
#include <linux/init.h>
@@ -56,12 +53,29 @@
/* instance data. There can be only one, MacLeod!!!! */
static struct au1xpsc_audio_data *au1xpsc_ac97_workdata;
+#if 0
+
+/* this could theoretically work, but ac97->bus->card->private_data can be NULL
+ * when snd_ac97_mixer() is called; I don't know if the rest further down the
+ * chain are always valid either.
+ */
+static inline struct au1xpsc_audio_data *ac97_to_pscdata(struct snd_ac97 *x)
+{
+ struct snd_soc_card *c = x->bus->card->private_data;
+ return snd_soc_dai_get_drvdata(c->rtd->cpu_dai);
+}
+
+#else
+
+#define ac97_to_pscdata(x) au1xpsc_ac97_workdata
+
+#endif
+
/* AC97 controller reads codec register */
static unsigned short au1xpsc_ac97_read(struct snd_ac97 *ac97,
unsigned short reg)
{
- /* FIXME */
- struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
+ struct au1xpsc_audio_data *pscdata = ac97_to_pscdata(ac97);
unsigned short retry, tmo;
unsigned long data;
@@ -102,8 +116,7 @@ static unsigned short au1xpsc_ac97_read(struct snd_ac97 *ac97,
static void au1xpsc_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
unsigned short val)
{
- /* FIXME */
- struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
+ struct au1xpsc_audio_data *pscdata = ac97_to_pscdata(ac97);
unsigned int tmo, retry;
au_writel(PSC_AC97EVNT_CD, AC97_EVNT(pscdata));
@@ -134,8 +147,7 @@ static void au1xpsc_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
/* AC97 controller asserts a warm reset */
static void au1xpsc_ac97_warm_reset(struct snd_ac97 *ac97)
{
- /* FIXME */
- struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
+ struct au1xpsc_audio_data *pscdata = ac97_to_pscdata(ac97);
au_writel(PSC_AC97RST_SNC, AC97_RST(pscdata));
au_sync();
@@ -146,8 +158,7 @@ static void au1xpsc_ac97_warm_reset(struct snd_ac97 *ac97)
static void au1xpsc_ac97_cold_reset(struct snd_ac97 *ac97)
{
- /* FIXME */
- struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
+ struct au1xpsc_audio_data *pscdata = ac97_to_pscdata(ac97);
int i;
/* disable PSC during cold reset */
@@ -202,8 +213,7 @@ static int au1xpsc_ac97_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
- /* FIXME */
- struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
+ struct au1xpsc_audio_data *pscdata = snd_soc_dai_get_drvdata(dai);
unsigned long r, ro, stat;
int chans, t, stype = SUBSTREAM_TYPE(substream);
@@ -283,8 +293,7 @@ out:
static int au1xpsc_ac97_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
- /* FIXME */
- struct au1xpsc_audio_data *pscdata = au1xpsc_ac97_workdata;
+ struct au1xpsc_audio_data *pscdata = snd_soc_dai_get_drvdata(dai);
int ret, stype = SUBSTREAM_TYPE(substream);
ret = 0;
@@ -315,27 +324,19 @@ static int au1xpsc_ac97_trigger(struct snd_pcm_substream *substream,
return ret;
}
-static int au1xpsc_ac97_probe(struct platform_device *pdev,
- struct snd_soc_dai *dai)
+static int au1xpsc_ac97_probe(struct snd_soc_dai *dai)
{
return au1xpsc_ac97_workdata ? 0 : -ENODEV;
}
-static void au1xpsc_ac97_remove(struct platform_device *pdev,
- struct snd_soc_dai *dai)
-{
-}
-
static struct snd_soc_dai_ops au1xpsc_ac97_dai_ops = {
.trigger = au1xpsc_ac97_trigger,
.hw_params = au1xpsc_ac97_hw_params,
};
-struct snd_soc_dai au1xpsc_ac97_dai = {
- .name = "au1xpsc_ac97",
+static const struct snd_soc_dai_driver au1xpsc_ac97_dai_template = {
.ac97_control = 1,
.probe = au1xpsc_ac97_probe,
- .remove = au1xpsc_ac97_remove,
.playback = {
.rates = AC97_RATES,
.formats = AC97_FMTS,
@@ -350,7 +351,6 @@ struct snd_soc_dai au1xpsc_ac97_dai = {
},
.ops = &au1xpsc_ac97_dai_ops,
};
-EXPORT_SYMBOL_GPL(au1xpsc_ac97_dai);
static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
{
@@ -359,9 +359,6 @@ static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
unsigned long sel;
struct au1xpsc_audio_data *wd;
- if (au1xpsc_ac97_workdata)
- return -EBUSY;
-
wd = kzalloc(sizeof(struct au1xpsc_audio_data), GFP_KERNEL);
if (!wd)
return -ENOMEM;
@@ -395,18 +392,24 @@ static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
au_writel(PSC_SEL_PS_AC97MODE | sel, PSC_SEL(wd));
au_sync();
- ret = snd_soc_register_dai(&au1xpsc_ac97_dai);
+ /* name the DAI like this device instance ("au1xpsc-ac97.PSCINDEX") */
+ memcpy(&wd->dai_drv, &au1xpsc_ac97_dai_template,
+ sizeof(struct snd_soc_dai_driver));
+ wd->dai_drv.name = dev_name(&pdev->dev);
+
+ platform_set_drvdata(pdev, wd);
+
+ ret = snd_soc_register_dai(&pdev->dev, &wd->dai_drv);
if (ret)
goto out1;
wd->dmapd = au1xpsc_pcm_add(pdev);
if (wd->dmapd) {
- platform_set_drvdata(pdev, wd);
- au1xpsc_ac97_workdata = wd; /* MDEV */
+ au1xpsc_ac97_workdata = wd;
return 0;
}
- snd_soc_unregister_dai(&au1xpsc_ac97_dai);
+ snd_soc_unregister_dai(&pdev->dev);
out1:
release_mem_region(r->start, resource_size(r));
out0:
@@ -422,7 +425,7 @@ static int __devexit au1xpsc_ac97_drvremove(struct platform_device *pdev)
if (wd->dmapd)
au1xpsc_pcm_destroy(wd->dmapd);
- snd_soc_unregister_dai(&au1xpsc_ac97_dai);
+ snd_soc_unregister_dai(&pdev->dev);
/* disable PSC completely */
au_writel(0, AC97_CFG(wd));
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 08:30:27 +0000