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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>
This commit is contained in:
Marek Vasut 2009-07-30 02:55:01 +02:00 committed by Mark Brown
parent 30230f4cd7
commit 4ac0478f2a
4 changed files with 27 additions and 1 deletions
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3
arch/arm/mach-pxa/include/mach/audio.h
View File

@ -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);

3
include/sound/ac97_codec.h
View File

@ -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
*/

10
sound/arm/pxa2xx-ac97.c
View File

@ -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;
}

12
sound/soc/pxa/pxa2xx-ac97.c
View File

@ -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