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path: root/sound/isa/cs423x/cs4231.c
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Diffstat (limited to 'sound/isa/cs423x/cs4231.c')
-rw-r--r--sound/isa/cs423x/cs4231.c110
1 files changed, 90 insertions, 20 deletions
diff --git a/sound/isa/cs423x/cs4231.c b/sound/isa/cs423x/cs4231.c
index 9be5416bcb92..ab67b5c2590d 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>
@@ -64,15 +66,15 @@ MODULE_PARM_DESC(dma1, "DMA1 # for CS4231 driver.");
module_param_array(dma2, int, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA2 # for CS4231 driver.");
-static snd_card_t *snd_cs4231_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+static struct platform_device *devices[SNDRV_CARDS];
-static int __init snd_card_cs4231_probe(int dev)
+static int __init snd_cs4231_probe(struct platform_device *pdev)
{
- snd_card_t *card;
- struct snd_card_cs4231 *acard;
- snd_pcm_t *pcm = NULL;
- cs4231_t *chip;
+ int dev = pdev->id;
+ struct snd_card *card;
+ struct snd_pcm *pcm;
+ struct snd_cs4231 *chip;
int err;
if (port[dev] == SNDRV_AUTO_PORT) {
@@ -90,7 +92,6 @@ 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 +99,7 @@ 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 +127,12 @@ 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 +140,97 @@ static int __init snd_card_cs4231_probe(int dev)
return err;
}
-static int __init alsa_card_cs4231_init(void)
+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 void __init_or_module snd_cs4231_unregister_all(void)
{
- int dev, cards;
+ int i;
- for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
- if (snd_card_cs4231_probe(dev) >= 0)
- cards++;
+ for (i = 0; i < ARRAY_SIZE(devices); ++i)
+ platform_device_unregister(devices[i]);
+ platform_driver_unregister(&snd_cs4231_driver);
+}
+
+static int __init alsa_card_cs4231_init(void)
+{
+ int i, cards, err;
+
+ 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;
+ }
+ devices[i] = device;
+ 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:
+ snd_cs4231_unregister_all();
+ 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]);
+ snd_cs4231_unregister_all();
}
module_init(alsa_card_cs4231_init)