[ALSA] gus - Use platform_device
[linux-2.6.git] / sound / isa / gus / gusclassic.c
index 6db484f71367151e948eddda3f8728bc24012300..57beb74f5b9dbe35242fc821b366a62c168a43c7 100644 (file)
  */
 
 #include <sound/driver.h>
-#include <asm/dma.h>
 #include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/time.h>
 #include <linux/moduleparam.h>
+#include <asm/dma.h>
 #include <sound/core.h>
 #include <sound/gus.h>
-#define SNDRV_LEGACY_AUTO_PROBE
 #define SNDRV_LEGACY_FIND_FREE_IRQ
 #define SNDRV_LEGACY_FIND_FREE_DMA
 #include <sound/initval.h>
@@ -70,7 +71,6 @@ MODULE_PARM_DESC(channels, "GF1 channels for GUS Classic driver.");
 module_param_array(pcm_channels, int, NULL, 0444);
 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Classic driver.");
 
-static struct snd_card *snd_gusclassic_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
 
 #define PFX    "gusclassic: "
 
@@ -101,20 +101,19 @@ static void __init snd_gusclassic_init(int dev, struct snd_gus_card * gus)
        gus->joystick_dac = joystick_dac[dev];
 }
 
-static int __init snd_gusclassic_probe(int dev)
+static int __init snd_gusclassic_probe(struct platform_device *pdev)
 {
+       int dev = pdev->id;
        static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
        static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
        int xirq, xdma1, xdma2;
        struct snd_card *card;
-       struct snd_gusclassic *guscard;
        struct snd_gus_card *gus = NULL;
        int err;
 
        card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
        if (card == NULL)
                return -ENOMEM;
-       guscard = (struct snd_gusclassic *)card->private_data;
        if (pcm_channels[dev] < 2)
                pcm_channels[dev] = 2;
 
@@ -143,12 +142,31 @@ static int __init snd_gusclassic_probe(int dev)
                }
        }
 
-
-       if ((err = snd_gus_create(card,
-                                 port[dev],
-                                 xirq, xdma1, xdma2,
-                                 0, channels[dev], pcm_channels[dev],
-                                 0, &gus)) < 0)
+       if (port[dev] != SNDRV_AUTO_PORT) {
+               err = snd_gus_create(card,
+                                    port[dev],
+                                    xirq, xdma1, xdma2,
+                                    0, channels[dev], pcm_channels[dev],
+                                    0, &gus);
+       } else {
+               /* auto-probe legacy ports */
+               static unsigned long possible_ports[] = {
+                       0x220, 0x230, 0x240, 0x250, 0x260,
+               };
+               int i;
+               for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
+                       err = snd_gus_create(card,
+                                            possible_ports[i],
+                                            xirq, xdma1, xdma2,
+                                            0, channels[dev], pcm_channels[dev],
+                                            0, &gus);
+                       if (err >= 0) {
+                               port[dev] = possible_ports[i];
+                               break;
+                       }
+               }
+       }
+       if (err < 0)
                goto _err;
 
        if ((err = snd_gusclassic_detect(gus)) < 0)
@@ -178,13 +196,12 @@ static int __init snd_gusclassic_probe(int dev)
        if (dma2 >= 0)
                sprintf(card->longname + strlen(card->longname), "&%d", xdma2);
 
-       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_gusclassic_cards[dev] = card;
+       platform_set_drvdata(pdev, card);
        return 0;
 
  _err:
@@ -192,53 +209,60 @@ static int __init snd_gusclassic_probe(int dev)
        return err;
 }
 
-static int __init snd_gusclassic_legacy_auto_probe(unsigned long xport)
+static int snd_gusclassic_remove(struct platform_device *devptr)
 {
-       static int dev;
-       int res;
-
-       for ( ; dev < SNDRV_CARDS; dev++) {
-               if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
-                       continue;
-               port[dev] = xport;
-               res = snd_gusclassic_probe(dev);
-               if (res < 0)
-                       port[dev] = SNDRV_AUTO_PORT;
-               return res;
-       }
-       return -ENODEV;
+       snd_card_free(platform_get_drvdata(devptr));
+       platform_set_drvdata(devptr, NULL);
+       return 0;
 }
 
+#define GUSCLASSIC_DRIVER      "snd_gusclassic"
+
+static struct platform_driver snd_gusclassic_driver = {
+       .probe          = snd_gusclassic_probe,
+       .remove         = snd_gusclassic_remove,
+       /* FIXME: suspend/resume */
+       .driver         = {
+               .name   = GUSCLASSIC_DRIVER
+       },
+};
+
 static int __init alsa_card_gusclassic_init(void)
 {
-       static unsigned long possible_ports[] = {0x220, 0x230, 0x240, 0x250, 0x260, -1};
-       int dev, cards, i;
-
-       for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
-               if (port[dev] == SNDRV_AUTO_PORT)
-                       continue;
-               if (snd_gusclassic_probe(dev) >= 0)
-                       cards++;
-       }
-       i = snd_legacy_auto_probe(possible_ports, snd_gusclassic_legacy_auto_probe);
-       if (i > 0)
-               cards += i;
+       int i, cards, err;
+
+       err = platform_driver_register(&snd_gusclassic_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(GUSCLASSIC_DRIVER,
+                                                        i, NULL, 0);
+               if (IS_ERR(device)) {
+                       err = PTR_ERR(device);
+                       goto errout;
+               }
+               cards++;
+       }
        if (!cards) {
 #ifdef MODULE
                printk(KERN_ERR "GUS Classic soundcard not found or device busy\n");
 #endif
-               return -ENODEV;
+               err = -ENODEV;
+               goto errout;
        }
        return 0;
+
+ errout:
+       platform_driver_unregister(&snd_gusclassic_driver);
+       return err;
 }
 
 static void __exit alsa_card_gusclassic_exit(void)
 {
-       int idx;
-       
-       for (idx = 0; idx < SNDRV_CARDS; idx++)
-               snd_card_free(snd_gusclassic_cards[idx]);
+       platform_driver_unregister(&snd_gusclassic_driver);
 }
 
 module_init(alsa_card_gusclassic_init)