[ALSA] cs4231 - Use platform_device
Modules: CS4231 driver
Rewrite the probe/remove with platform_device.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/cs423x/cs4231.c b/sound/isa/cs423x/cs4231.c
index a8da879..b5252a5 100644
--- a/sound/isa/cs423x/cs4231.c
+++ b/sound/isa/cs423x/cs4231.c
@@ -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_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 @@
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 @@
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 @@
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 @@
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)