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[ALSA] gus - Use platform_device

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Rewrite the probe/remove with platform_device.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2005-11-17 17:13:43 +01:00
committed by Jaroslav Kysela
parent 2a571ed13c
commit 654aa66177
4 changed files with 370 additions and 277 deletions
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114
sound/isa/gus/gusclassic.c
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@@ -20,14 +20,15 @@
*/
#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;
int i, cards, err;
for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
if (port[dev] == SNDRV_AUTO_PORT)
continue;
if (snd_gusclassic_probe(dev) >= 0)
cards++;
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++;
}
i = snd_legacy_auto_probe(possible_ports, snd_gusclassic_legacy_auto_probe);
if (i > 0)
cards += i;
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)