[ALSA] mpu401 - Use platform_device
Modules: MPU401 UART Rewrite the probe/remove code using platform_device. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
Jaroslav Kysela
parent
3564fbb880
commit
b3fe95123f
1 changed files with 63 additions and 24 deletions
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@ -23,6 +23,8 @@
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/pnp.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/moduleparam.h>
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#include <sound/core.h>
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#include <sound/mpu401.h>
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@ -56,7 +58,6 @@ MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
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static struct snd_card *snd_mpu401_legacy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
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static int pnp_registered = 0;
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static int snd_mpu401_create(int dev, struct snd_card **rcard)
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@ -85,12 +86,6 @@ static int snd_mpu401_create(int dev, struct snd_card **rcard)
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goto _err;
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}
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if ((err = snd_card_set_generic_dev(card)) < 0)
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goto _err;
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if ((err = snd_card_register(card)) < 0)
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goto _err;
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*rcard = card;
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return 0;
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@ -99,8 +94,12 @@ static int snd_mpu401_create(int dev, struct snd_card **rcard)
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return err;
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}
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static int __devinit snd_mpu401_probe(int dev)
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static int __devinit snd_mpu401_probe(struct platform_device *devptr)
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{
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int dev = devptr->id;
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int err;
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struct snd_card *card;
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if (port[dev] == SNDRV_AUTO_PORT) {
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snd_printk(KERN_ERR "specify port\n");
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return -EINVAL;
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@ -109,9 +108,36 @@ static int __devinit snd_mpu401_probe(int dev)
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snd_printk(KERN_ERR "specify or disable IRQ\n");
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return -EINVAL;
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}
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return snd_mpu401_create(dev, &snd_mpu401_legacy_cards[dev]);
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err = snd_mpu401_create(dev, &card);
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if (err < 0)
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return err;
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snd_card_set_dev(card, &devptr->dev);
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if ((err = snd_card_register(card)) < 0) {
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snd_card_free(card);
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return err;
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}
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platform_set_drvdata(devptr, card);
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return 0;
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}
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static int __devexit snd_mpu401_remove(struct platform_device *devptr)
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{
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snd_card_free(platform_get_drvdata(devptr));
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platform_set_drvdata(devptr, NULL);
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return 0;
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}
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#define SND_MPU401_DRIVER "snd_mpu401"
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static struct platform_driver snd_mpu401_driver = {
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.probe = snd_mpu401_probe,
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.remove = __devexit_p(snd_mpu401_remove),
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.driver = {
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.name = SND_MPU401_DRIVER
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},
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};
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#ifdef CONFIG_PNP
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#define IO_EXTENT 2
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@ -164,6 +190,10 @@ static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
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err = snd_mpu401_create(dev, &card);
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if (err < 0)
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return err;
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if ((err = snd_card_register(card)) < 0) {
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snd_card_free(card);
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return err;
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}
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snd_card_set_dev(card, &pnp_dev->dev);
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pnp_set_drvdata(pnp_dev, card);
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++dev;
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@ -192,18 +222,25 @@ static struct pnp_driver snd_mpu401_pnp_driver;
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static int __init alsa_card_mpu401_init(void)
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{
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int dev, devices = 0;
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int err;
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int i, err, devices;
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for (dev = 0; dev < SNDRV_CARDS; dev++) {
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if (!enable[dev])
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continue;
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if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
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return err;
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devices = 0;
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for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
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struct platform_device *device;
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#ifdef CONFIG_PNP
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if (pnp[dev])
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if (pnp[i])
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continue;
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#endif
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if (snd_mpu401_probe(dev) >= 0)
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devices++;
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device = platform_device_register_simple(SND_MPU401_DRIVER,
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i, NULL, 0);
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if (IS_ERR(device)) {
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err = PTR_ERR(device);
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goto errout;
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}
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devices++;
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}
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if ((err = pnp_register_driver(&snd_mpu401_pnp_driver)) >= 0) {
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pnp_registered = 1;
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@ -214,21 +251,23 @@ static int __init alsa_card_mpu401_init(void)
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#ifdef MODULE
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printk(KERN_ERR "MPU-401 device not found or device busy\n");
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#endif
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if (pnp_registered)
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pnp_unregister_driver(&snd_mpu401_pnp_driver);
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return -ENODEV;
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err = -ENODEV;
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goto errout;
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}
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return 0;
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errout:
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if (pnp_registered)
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pnp_unregister_driver(&snd_mpu401_pnp_driver);
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platform_driver_unregister(&snd_mpu401_driver);
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return err;
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}
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static void __exit alsa_card_mpu401_exit(void)
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{
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int idx;
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if (pnp_registered)
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pnp_unregister_driver(&snd_mpu401_pnp_driver);
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for (idx = 0; idx < SNDRV_CARDS; idx++)
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snd_card_free(snd_mpu401_legacy_cards[idx]);
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platform_driver_unregister(&snd_mpu401_driver);
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}
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module_init(alsa_card_mpu401_init)
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