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authorMarek Vasut <marek.vasut@gmail.com>2009-07-30 02:55:01 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-13 22:19:37 +0100
commit4ac0478f2afaf8e778b4190d6218459a9dbf2a8f (patch)
tree97caf69480c6fcf9a3d294e650a7548f137e5d44
parent30230f4cd7c002a40c13758d12c1c6d96100461d (diff)
downloadlinux-linaro-precise-4ac0478f2afaf8e778b4190d6218459a9dbf2a8f.tar.gz
ALSA: Allow passing platform_data for pxa2xx-ac97
This patch adds support for passing platform data to ac97 bus devices from PXA2xx-AC97 driver.. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r--arch/arm/mach-pxa/include/mach/audio.h3
-rw-r--r--include/sound/ac97_codec.h3
-rw-r--r--sound/arm/pxa2xx-ac97.c10
-rw-r--r--sound/soc/pxa/pxa2xx-ac97.c12
4 files changed, 27 insertions, 1 deletions
diff --git a/arch/arm/mach-pxa/include/mach/audio.h b/arch/arm/mach-pxa/include/mach/audio.h
index 16eb02552d5..a3449e35a6f 100644
--- a/arch/arm/mach-pxa/include/mach/audio.h
+++ b/arch/arm/mach-pxa/include/mach/audio.h
@@ -3,10 +3,12 @@
#include <sound/core.h>
#include <sound/pcm.h>
+#include <sound/ac97_codec.h>
/*
* @reset_gpio: AC97 reset gpio (normally gpio113 or gpio95)
* a -1 value means no gpio will be used for reset
+ * @codec_pdata: AC97 codec platform_data
* reset_gpio should only be specified for pxa27x CPUs where a silicon
* bug prevents correct operation of the reset line. If not specified,
@@ -20,6 +22,7 @@ typedef struct {
void (*resume)(void *);
void *priv;
int reset_gpio;
+ void *codec_pdata[AC97_BUS_MAX_DEVICES];
} pxa2xx_audio_ops_t;
extern void pxa_set_ac97_info(pxa2xx_audio_ops_t *ops);
diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 9b1c0985480..3dae3f799b9 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -32,6 +32,9 @@
#include "control.h"
#include "info.h"
+/* maximum number of devices on the AC97 bus */
+#define AC97_BUS_MAX_DEVICES 4
+
/*
* AC'97 codec registers
*/
diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c
index c570ebd9d17..6c00ea45d5c 100644
--- a/sound/arm/pxa2xx-ac97.c
+++ b/sound/arm/pxa2xx-ac97.c
@@ -170,6 +170,13 @@ static int __devinit pxa2xx_ac97_probe(struct platform_device *dev)
struct snd_ac97_bus *ac97_bus;
struct snd_ac97_template ac97_template;
int ret;
+ pxa2xx_audio_ops_t *pdata = dev->dev.platform_data;
+
+ if (dev->id >= 0) {
+ dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n");
+ ret = -ENXIO;
+ goto err_dev;
+ }
ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
THIS_MODULE, 0, &card);
@@ -200,6 +207,8 @@ static int __devinit pxa2xx_ac97_probe(struct platform_device *dev)
snprintf(card->longname, sizeof(card->longname),
"%s (%s)", dev->dev.driver->name, card->mixername);
+ if (pdata && pdata->codec_data)
+ snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata);
snd_card_set_dev(card, &dev->dev);
ret = snd_card_register(card);
if (ret == 0) {
@@ -212,6 +221,7 @@ err_remove:
err:
if (card)
snd_card_free(card);
+err_dev:
return ret;
}
diff --git a/sound/soc/pxa/pxa2xx-ac97.c b/sound/soc/pxa/pxa2xx-ac97.c
index d9c94d71fa6..7330e5c5b9d 100644
--- a/sound/soc/pxa/pxa2xx-ac97.c
+++ b/sound/soc/pxa/pxa2xx-ac97.c
@@ -22,6 +22,7 @@
#include <mach/hardware.h>
#include <mach/regs-ac97.h>
#include <mach/dma.h>
+#include <mach/audio.h>
#include "pxa2xx-pcm.h"
#include "pxa2xx-ac97.h"
@@ -241,9 +242,18 @@ EXPORT_SYMBOL_GPL(soc_ac97_ops);
static int __devinit pxa2xx_ac97_dev_probe(struct platform_device *pdev)
{
int i;
+ pxa2xx_audio_ops_t *pdata = pdev->dev.platform_data;
- for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++)
+ if (pdev->id >= 0) {
+ dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
+ return -ENXIO;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(pxa_ac97_dai); i++) {
pxa_ac97_dai[i].dev = &pdev->dev;
+ if (pdata && pdata->codec_pdata)
+ pxa_ac97_dai[i].ac97_pdata = pdata->codec_pdata;
+ }
/* 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