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[ALSA] cs4231 - Use platform_device

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Modules: CS4231 driver

Rewrite the probe/remove with platform_device.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-11-17 17:00:41 +01:00 committed by Jaroslav Kysela
parent 7bb35e20e8
commit 8b91375736
1 changed files with 76 additions and 18 deletions
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94
sound/isa/cs423x/cs4231.c
View file

@ -22,6 +22,8 @@
#include <sound/driver.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/moduleparam.h>
@ -64,14 +66,12 @@ MODULE_PARM_DESC(dma1, "DMA1 # for CS4231 driver.");
module_param_array(dma2, int, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA2 # for CS4231 driver.");
static struct snd_card *snd_cs4231_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
static int __init snd_card_cs4231_probe(int dev)
static int __init snd_cs4231_probe(struct platform_device *pdev)
{
int dev = pdev->id;
struct snd_card *card;
struct snd_card_cs4231 *acard;
struct snd_pcm *pcm = NULL;
struct snd_pcm *pcm;
struct snd_cs4231 *chip;
int err;
@ -90,7 +90,6 @@ static int __init snd_card_cs4231_probe(int dev)
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
acard = (struct snd_card_cs4231 *)card->private_data;
if ((err = snd_cs4231_create(card, port[dev], -1,
irq[dev],
dma1[dev],
@ -98,6 +97,7 @@ static int __init snd_card_cs4231_probe(int dev)
CS4231_HW_DETECT,
0, &chip)) < 0)
goto _err;
card->private_data = chip;
if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0)
goto _err;
@ -125,12 +125,12 @@ static int __init snd_card_cs4231_probe(int dev)
printk(KERN_WARNING "cs4231: MPU401 not detected\n");
}
if ((err = snd_card_set_generic_dev(card)) < 0)
goto _err;
snd_card_set_dev(card, &pdev->dev);
if ((err = snd_card_register(card)) < 0)
goto _err;
snd_cs4231_cards[dev] = card;
platform_set_drvdata(pdev, card);
return 0;
_err:
@ -138,29 +138,87 @@ static int __init snd_card_cs4231_probe(int dev)
return err;
}
static int __devexit snd_cs4231_remove(struct platform_device *devptr)
{
snd_card_free(platform_get_drvdata(devptr));
platform_set_drvdata(devptr, NULL);
return 0;
}
#ifdef CONFIG_PM
static int snd_cs4231_suspend(struct platform_device *dev, pm_message_t state)
{
struct snd_card *card;
struct snd_cs4231 *chip;
card = platform_get_drvdata(dev);
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
chip = card->private_data;
chip->suspend(chip);
return 0;
}
static int snd_cs4231_resume(struct platform_device *dev)
{
struct snd_card *card;
struct snd_cs4231 *chip;
card = platform_get_drvdata(dev);
chip = card->private_data;
chip->resume(chip);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif
#define SND_CS4231_DRIVER "snd_cs4231"
static struct platform_driver snd_cs4231_driver = {
.probe = snd_cs4231_probe,
.remove = __devexit_p(snd_cs4231_remove),
#ifdef CONFIG_PM
.suspend = snd_cs4231_suspend,
.resume = snd_cs4231_resume,
#endif
.driver = {
.name = SND_CS4231_DRIVER
},
};
static int __init alsa_card_cs4231_init(void)
{
int dev, cards;
int i, cards, err;
for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
if (snd_card_cs4231_probe(dev) >= 0)
cards++;
err = platform_driver_register(&snd_cs4231_driver);
if (err < 0)
return err;
cards = 0;
for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
struct platform_device *device;
device = platform_device_register_simple(SND_CS4231_DRIVER,
i, NULL, 0);
if (IS_ERR(device)) {
err = PTR_ERR(device);
goto errout;
}
cards++;
}
if (!cards) {
#ifdef MODULE
printk(KERN_ERR "CS4231 soundcard not found or device busy\n");
#endif
return -ENODEV;
err = -ENODEV;
goto errout;
}
return 0;
errout:
platform_driver_unregister(&snd_cs4231_driver);
return err;
}
static void __exit alsa_card_cs4231_exit(void)
{
int idx;
for (idx = 0; idx < SNDRV_CARDS; idx++)
snd_card_free(snd_cs4231_cards[idx]);
platform_driver_unregister(&snd_cs4231_driver);
}
module_init(alsa_card_cs4231_init)