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linux/sound/isa/cs423x/cs4231.c
Clemens Ladisch f7a9275d94 [ALSA] unregister platform devices 
Call platform_device_unregister() for all platform devices that we've
registered.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
2006-01-03 12:30:39 +01:00

238 lines
6.6 KiB
C
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/*
* Generic driver for CS4231 chips
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
* Originally the CS4232/CS4232A driver, modified for use on CS4231 by
* Tugrul Galatali <galatalt@stuy.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <sound/driver.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 <sound/core.h>
#include <sound/cs4231.h>
#include <sound/mpu401.h>
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Generic CS4231");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Crystal Semiconductors,CS4231}}");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 9,11,12,15 */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for CS4231 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for CS4231 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable CS4231 soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for CS4231 driver.");
module_param_array(mpu_port, long, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for CS4231 driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for CS4231 driver.");
module_param_array(mpu_irq, int, NULL, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for CS4231 driver.");
module_param_array(dma1, int, NULL, 0444);
MODULE_PARM_DESC(dma1, "DMA1 # for CS4231 driver.");
module_param_array(dma2, int, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA2 # for CS4231 driver.");
static struct platform_device *devices[SNDRV_CARDS];
static int __init snd_cs4231_probe(struct platform_device *pdev)
{
int dev = pdev->id;
struct snd_card *card;
struct snd_pcm *pcm;
struct snd_cs4231 *chip;
int err;
if (port[dev] == SNDRV_AUTO_PORT) {
snd_printk(KERN_ERR "specify port\n");
return -EINVAL;
}
if (irq[dev] == SNDRV_AUTO_IRQ) {
snd_printk(KERN_ERR "specify irq\n");
return -EINVAL;
}
if (dma1[dev] == SNDRV_AUTO_DMA) {
snd_printk(KERN_ERR "specify dma1\n");
return -EINVAL;
}
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
if ((err = snd_cs4231_create(card, port[dev], -1,
irq[dev],
dma1[dev],
dma2[dev],
CS4231_HW_DETECT,
0, &chip)) < 0)
goto _err;
card->private_data = chip;
if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0)
goto _err;
strcpy(card->driver, "CS4231");
strcpy(card->shortname, pcm->name);
sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
pcm->name, chip->port, irq[dev], dma1[dev]);
if (dma2[dev] >= 0)
sprintf(card->longname + strlen(card->longname), "&%d", dma2[dev]);
if ((err = snd_cs4231_mixer(chip)) < 0)
goto _err;
if ((err = snd_cs4231_timer(chip, 0, NULL)) < 0)
goto _err;
if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
mpu_irq[dev] = -1;
if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
mpu_port[dev], 0,
mpu_irq[dev],
mpu_irq[dev] >= 0 ? SA_INTERRUPT : 0,
NULL) < 0)
printk(KERN_WARNING "cs4231: MPU401 not detected\n");
}
snd_card_set_dev(card, &pdev->dev);
if ((err = snd_card_register(card)) < 0)
goto _err;
platform_set_drvdata(pdev, card);
return 0;
_err:
snd_card_free(card);
return err;
}
static int __devexit snd_cs4231_remove(struct platform_device *devptr)
{
snd_card_free(platform_get_drvdata(devptr));
platform_set_drvdata(devptr, NULL);
return 0;
}
#ifdef CONFIG_PM
static int snd_cs4231_suspend(struct platform_device *dev, pm_message_t state)
{
struct snd_card *card;
struct snd_cs4231 *chip;
card = platform_get_drvdata(dev);
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
chip = card->private_data;
chip->suspend(chip);
return 0;
}
static int snd_cs4231_resume(struct platform_device *dev)
{
struct snd_card *card;
struct snd_cs4231 *chip;
card = platform_get_drvdata(dev);
chip = card->private_data;
chip->resume(chip);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif
#define SND_CS4231_DRIVER "snd_cs4231"
static struct platform_driver snd_cs4231_driver = {
.probe = snd_cs4231_probe,
.remove = __devexit_p(snd_cs4231_remove),
#ifdef CONFIG_PM
.suspend = snd_cs4231_suspend,
.resume = snd_cs4231_resume,
#endif
.driver = {
.name = SND_CS4231_DRIVER
},
};
static void __init_or_module snd_cs4231_unregister_all(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(devices); ++i)
platform_device_unregister(devices[i]);
platform_driver_unregister(&snd_cs4231_driver);
}
static int __init alsa_card_cs4231_init(void)
{
int i, cards, err;
err = platform_driver_register(&snd_cs4231_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_CS4231_DRIVER,
i, NULL, 0);
if (IS_ERR(device)) {
err = PTR_ERR(device);
goto errout;
}
devices[i] = device;
cards++;
}
if (!cards) {
#ifdef MODULE
printk(KERN_ERR "CS4231 soundcard not found or device busy\n");
#endif
err = -ENODEV;
goto errout;
}
return 0;
errout:
snd_cs4231_unregister_all();
return err;
}
static void __exit alsa_card_cs4231_exit(void)
{
snd_cs4231_unregister_all();
}
module_init(alsa_card_cs4231_init)
module_exit(alsa_card_cs4231_exit)
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