[ALSA] gus - Use platform_device

Rewrite the probe/remove with platform_device.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 72 insertions, 45 deletions

diff --git a/sound/isa/gus/gusmax.c b/sound/isa/gus/gusmax.c
index 63311cdb4a1..d1b70ee9b03 100644
--- a/sound/isa/gus/gusmax.c
+++ b/sound/isa/gus/gusmax.c
@@ -20,15 +20,16 @@
  */
 
 #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>
 #include <sound/cs4231.h>
-#define SNDRV_LEGACY_AUTO_PROBE
 #define SNDRV_LEGACY_FIND_FREE_IRQ
 #define SNDRV_LEGACY_FIND_FREE_DMA
 #include <sound/initval.h>
@@ -80,8 +81,6 @@ struct snd_gusmax {
         unsigned short pcm_status_reg;
 };
 
-static struct snd_card *snd_gusmax_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
-
 #define PFX     "gusmax: "
 
 static int __init snd_gusmax_detect(struct snd_gus_card * gus)
@@ -203,8 +202,9 @@ static void snd_gusmax_free(struct snd_card *card)
                 free_irq(maxcard->irq, (void *)maxcard);
 }
 
-static int __init snd_gusmax_probe(int dev)
+static int __init snd_gusmax_probe(struct platform_device *pdev)
 {
+        int dev = pdev->id;
         static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, -1};
         static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
         int xirq, xdma1, xdma2, err;
@@ -247,12 +247,32 @@ static int __init snd_gusmax_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 {
+                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_gusmax_detect(gus)) < 0)
@@ -310,15 +330,15 @@ static int __init snd_gusmax_probe(int dev)
         if (xdma2 >= 0)
                 sprintf(card->longname + strlen(card->longname), "&%i", 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;
                 
         maxcard->gus = gus;
         maxcard->cs4231 = cs4231;
-        snd_gusmax_cards[dev] = card;
+
+        platform_set_drvdata(pdev, card);
         return 0;
 
  _err:
@@ -326,53 +346,60 @@ static int __init snd_gusmax_probe(int dev)
         return err;
 }
 
-static int __init snd_gusmax_legacy_auto_probe(unsigned long xport)
+static int snd_gusmax_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_gusmax_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 GUSMAX_DRIVER   "snd_gusmax"
+
+static struct platform_driver snd_gusmax_driver = {
+        .probe          = snd_gusmax_probe,
+        .remove         = snd_gusmax_remove,
+        /* FIXME: suspend/resume */
+        .driver         = {
+                .name   = GUSMAX_DRIVER
+        },
+};
+
 static int __init alsa_card_gusmax_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] > 0; dev++) {
-                if (port[dev] == SNDRV_AUTO_PORT)
-                        continue;
-                if (snd_gusmax_probe(dev) >= 0)
-                        cards++;
-        }
-        i = snd_legacy_auto_probe(possible_ports, snd_gusmax_legacy_auto_probe);
-        if (i > 0)
-                cards += i;
+        int i, cards, err;
+
+        err = platform_driver_register(&snd_gusmax_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(GUSMAX_DRIVER,
+                                                         i, NULL, 0);
+                if (IS_ERR(device)) {
+                        err = PTR_ERR(device);
+                        goto errout;
+                }
+                cards++;
+        }
         if (!cards) {
 #ifdef MODULE
                 printk(KERN_ERR "GUS MAX soundcard not found or device busy\n");
 #endif
-                return -ENODEV;
+                err = -ENODEV;
+                goto errout;
         }
         return 0;
+
+ errout:
+        platform_driver_unregister(&snd_gusmax_driver);
+        return err;
 }
 
 static void __exit alsa_card_gusmax_exit(void)
 {
-        int idx;
-
-        for (idx = 0; idx < SNDRV_CARDS; idx++)
-                snd_card_free(snd_gusmax_cards[idx]);
+        platform_driver_unregister(&snd_gusmax_driver);
 }
 
 module_init(alsa_card_gusmax_init)