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[ALSA] sb8 - Use platform_device and add PnP support 

Modules: SB8 driver

Rewrite the probe/remove with platform_device.
Add PM support, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-11-17 16:55:22 +01:00 committed by Jaroslav Kysela
parent 6f045616af
commit 67be445871
1 changed files with 106 additions and 46 deletions
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152
sound/isa/sb/sb8.c
View File

@ -21,13 +21,14 @@
#include <sound/driver.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/opl3.h>
#define SNDRV_LEGACY_AUTO_PROBE
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
@ -57,10 +58,9 @@ MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
struct snd_sb8 {
struct resource *fm_res; /* used to block FM i/o region for legacy cards */
struct snd_sb *chip;
};
static struct snd_card *snd_sb8_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct snd_sb *chip = dev_id;
@ -81,8 +81,9 @@ static void snd_sb8_free(struct snd_card *card)
release_and_free_resource(acard->fm_res);
}
static int __init snd_sb8_probe(int dev)
static int __init snd_sb8_probe(struct platform_device *pdev)
{
int dev = pdev->id;
struct snd_sb *chip;
struct snd_card *card;
struct snd_sb8 *acard;
@ -93,20 +94,44 @@ static int __init snd_sb8_probe(int dev)
sizeof(struct snd_sb8));
if (card == NULL)
return -ENOMEM;
acard = (struct snd_sb8 *)card->private_data;
acard = card->private_data;
card->private_free = snd_sb8_free;
/* block the 0x388 port to avoid PnP conflicts */
acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
snd_sb8_interrupt,
dma8[dev],
-1,
SB_HW_AUTO,
&chip)) < 0)
goto _err;
if (port[dev] != SNDRV_AUTO_PORT) {
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
snd_sb8_interrupt,
dma8[dev],
-1,
SB_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_sbdsp_create(card, possible_ports[i],
irq[dev],
snd_sb8_interrupt,
dma8[dev],
-1,
SB_HW_AUTO,
&chip);
if (err >= 0) {
port[dev] = possible_ports[i];
break;
}
}
if (i >= ARRAY_SIZE(possible_ports))
goto _err;
}
acard->chip = chip;
if (chip->hardware >= SB_HW_16) {
if (chip->hardware == SB_HW_ALS100)
snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
@ -153,13 +178,12 @@ static int __init snd_sb8_probe(int dev)
chip->port,
irq[dev], dma8[dev]);
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_sb8_cards[dev] = card;
platform_set_drvdata(pdev, card);
return 0;
_err:
@ -167,53 +191,89 @@ static int __init snd_sb8_probe(int dev)
return err;
}
static int __init snd_card_sb8_legacy_auto_probe(unsigned long xport)
static int snd_sb8_remove(struct platform_device *pdev)
{
static int dev;
int res;
for ( ; dev < SNDRV_CARDS; dev++) {
if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
continue;
port[dev] = xport;
res = snd_sb8_probe(dev);
if (res < 0)
port[dev] = SNDRV_AUTO_PORT;
return res;
}
return -ENODEV;
snd_card_free(platform_get_drvdata(pdev));
platform_set_drvdata(pdev, NULL);
return 0;
}
#ifdef CONFIG_PM
static int snd_sb8_suspend(struct platform_device *dev, pm_message_t state)
{
struct snd_card *card = platform_get_drvdata(dev);
struct snd_sb8 *acard = card->private_data;
struct snd_sb *chip = acard->chip;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
snd_pcm_suspend_all(chip->pcm);
snd_sbmixer_suspend(chip);
return 0;
}
static int snd_sb8_resume(struct platform_device *dev)
{
struct snd_card *card = platform_get_drvdata(dev);
struct snd_sb8 *acard = card->private_data;
struct snd_sb *chip = acard->chip;
snd_sbdsp_reset(chip);
snd_sbmixer_resume(chip);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif
#define SND_SB8_DRIVER "snd_sb8"
static struct platform_driver snd_sb8_driver = {
.probe = snd_sb8_probe,
.remove = snd_sb8_remove,
#ifdef CONFIG_PM
.suspend = snd_sb8_suspend,
.resume = snd_sb8_resume,
#endif
.driver = {
.name = SND_SB8_DRIVER
},
};
static int __init alsa_card_sb8_init(void)
{
static unsigned long possible_ports[] = {0x220, 0x240, 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_sb8_probe(dev) >= 0)
cards++;
err = platform_driver_register(&snd_sb8_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(SND_SB8_DRIVER,
i, NULL, 0);
if (IS_ERR(device)) {
err = PTR_ERR(device);
goto errout;
}
cards++;
}
i = snd_legacy_auto_probe(possible_ports, snd_card_sb8_legacy_auto_probe);
if (i > 0)
cards += i;
if (!cards) {
#ifdef MODULE
snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
#endif
return -ENODEV;
err = -ENODEV;
goto errout;
}
return 0;
errout:
platform_driver_unregister(&snd_sb8_driver);
return err;
}
static void __exit alsa_card_sb8_exit(void)
{
int idx;
for (idx = 0; idx < SNDRV_CARDS; idx++)
snd_card_free(snd_sb8_cards[idx]);
platform_driver_unregister(&snd_sb8_driver);
}
module_init(alsa_card_sb8_init)