[ALSA] es1688 - Use platform_device
Takashi Iwai [Thu, 17 Nov 2005 16:13:30 +0000 (17:13 +0100)]
Modules: ES1688 driver

Rewrite the probe/remove with platform_device.

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

sound/isa/es1688/es1688.c

index 278511b..68bd40a 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/time.h>
 #include <linux/wait.h>
 #include <linux/moduleparam.h>
+#include <asm/dma.h>
 #include <sound/core.h>
 #include <sound/es1688.h>
 #include <sound/mpu401.h>
 #include <sound/opl3.h>
-#define SNDRV_LEGACY_AUTO_PROBE
 #define SNDRV_LEGACY_FIND_FREE_IRQ
 #define SNDRV_LEGACY_FIND_FREE_DMA
 #include <sound/initval.h>
@@ -68,12 +69,11 @@ MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for ESx688 driver.");
 module_param_array(dma8, int, NULL, 0444);
 MODULE_PARM_DESC(dma8, "8-bit DMA # for ESx688 driver.");
 
-static struct snd_card *snd_audiodrive_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
-
 #define PFX    "es1688: "
 
-static int __init snd_audiodrive_probe(int dev)
+static int __init snd_es1688_probe(struct platform_device *pdev)
 {
+       int dev = pdev->id;
        static int possible_irqs[] = {5, 9, 10, 7, -1};
        static int possible_dmas[] = {1, 3, 0, -1};
        int xirq, xdma, xmpu_irq;
@@ -105,10 +105,30 @@ static int __init snd_audiodrive_probe(int dev)
                }
        }
 
-       if ((err = snd_es1688_create(card, port[dev], mpu_port[dev],
-                                    xirq, xmpu_irq, xdma,
-                                    ES1688_HW_AUTO, &chip)) < 0)
-               goto _err;
+       if (port[dev] != SNDRV_AUTO_PORT) {
+               if ((err = snd_es1688_create(card, port[dev], mpu_port[dev],
+                                            xirq, xmpu_irq, xdma,
+                                            ES1688_HW_AUTO, &chip)) < 0)
+                       goto _err;
+       } else {
+               /* auto-probe legacy ports */
+               static unsigned long possible_ports[] = {
+                       0x220, 0x240, 0x260,
+               };
+               int i;
+               for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
+                       err = snd_es1688_create(card, possible_ports[i],
+                                               mpu_port[dev],
+                                               xirq, xmpu_irq, xdma,
+                                               ES1688_HW_AUTO, &chip);
+                       if (err >= 0) {
+                               port[dev] = possible_ports[i];
+                               break;
+                       }
+               }
+               if (i >= ARRAY_SIZE(possible_ports))
+                       goto _err;
+       }
 
        if ((err = snd_es1688_pcm(chip, 0, &pcm)) < 0)
                goto _err;
@@ -136,13 +156,12 @@ static int __init snd_audiodrive_probe(int dev)
                        goto _err;
        }
 
-       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_audiodrive_cards[dev] = card;
+       platform_set_drvdata(pdev, card);
        return 0;
 
  _err:
@@ -150,53 +169,60 @@ static int __init snd_audiodrive_probe(int dev)
        return err;
 }
 
-static int __init snd_audiodrive_legacy_auto_probe(unsigned long xport)
+static int snd_es1688_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_audiodrive_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 ES1688_DRIVER  "snd_es1688"
+
+static struct platform_driver snd_es1688_driver = {
+       .probe          = snd_es1688_probe,
+       .remove         = snd_es1688_remove,
+       /* FIXME: suspend/resume */
+       .driver         = {
+               .name   = ES1688_DRIVER
+       },
+};
+
 static int __init alsa_card_es1688_init(void)
 {
-       static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
-       int dev, cards = 0, i;
-
-       for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
-               if (port[dev] == SNDRV_AUTO_PORT)
-                       continue;
-               if (snd_audiodrive_probe(dev) >= 0)
-                       cards++;
+       int i, cards, err;
+
+       err = platform_driver_register(&snd_es1688_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(ES1688_DRIVER,
+                                                        i, NULL, 0);
+               if (IS_ERR(device)) {
+                       err = PTR_ERR(device);
+                       goto errout;
+               }
+               cards++;
        }
-       i = snd_legacy_auto_probe(possible_ports, snd_audiodrive_legacy_auto_probe);
-       if (i > 0)
-               cards += i;
-
        if (!cards) {
 #ifdef MODULE
                printk(KERN_ERR "ESS AudioDrive ES1688 soundcard not found or device busy\n");
 #endif
-               return -ENODEV;
+               err = -ENODEV;
+               goto errout;
        }
        return 0;
+
+ errout:
+       platform_driver_unregister(&snd_es1688_driver);
+       return err;
 }
 
 static void __exit alsa_card_es1688_exit(void)
 {
-       int idx;
-
-       for (idx = 0; idx < SNDRV_CARDS; idx++)
-               snd_card_free(snd_audiodrive_cards[idx]);
+       platform_driver_unregister(&snd_es1688_driver);
 }
 
 module_init(alsa_card_es1688_init)