ad1848.c
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/*
* Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
* Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
* Jaroslav Kysela <perex@perex.cz>
* Based on card-4232.c by Jaroslav Kysela <perex@perex.cz>
*
*
* 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 <linux/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/wss.h>
#include <sound/initval.h>
#define CRD_NAME "Generic AD1848/AD1847/CS4248"
#define DEV_NAME "ad1848"
MODULE_DESCRIPTION(CRD_NAME);
MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
"{Analog Devices,AD1847},"
"{Crystal Semiconductors,CS4248}}");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
static bool thinkpad[SNDRV_CARDS]; /* Thinkpad special case */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
module_param_array(dma1, int, NULL, 0444);
MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
module_param_array(thinkpad, bool, NULL, 0444);
MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
static int snd_ad1848_match(struct device *dev, unsigned int n)
{
if (!enable[n])
return 0;
if (port[n] == SNDRV_AUTO_PORT) {
dev_err(dev, "please specify port\n");
return 0;
}
if (irq[n] == SNDRV_AUTO_IRQ) {
dev_err(dev, "please specify irq\n");
return 0;
}
if (dma1[n] == SNDRV_AUTO_DMA) {
dev_err(dev, "please specify dma1\n");
return 0;
}
return 1;
}
static int snd_ad1848_probe(struct device *dev, unsigned int n)
{
struct snd_card *card;
struct snd_wss *chip;
int error;
error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
if (error < 0)
return error;
error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
0, &chip);
if (error < 0)
goto out;
card->private_data = chip;
error = snd_wss_pcm(chip, 0);
if (error < 0)
goto out;
error = snd_wss_mixer(chip);
if (error < 0)
goto out;
strcpy(card->driver, "AD1848");
strcpy(card->shortname, chip->pcm->name);
sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
chip->pcm->name, chip->port, irq[n], dma1[n]);
if (thinkpad[n])
strcat(card->longname, " [Thinkpad]");
error = snd_card_register(card);
if (error < 0)
goto out;
dev_set_drvdata(dev, card);
return 0;
out: snd_card_free(card);
return error;
}
static int snd_ad1848_remove(struct device *dev, unsigned int n)
{
snd_card_free(dev_get_drvdata(dev));
return 0;
}
#ifdef CONFIG_PM
static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_wss *chip = card->private_data;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
chip->suspend(chip);
return 0;
}
static int snd_ad1848_resume(struct device *dev, unsigned int n)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_wss *chip = card->private_data;
chip->resume(chip);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif
static struct isa_driver snd_ad1848_driver = {
.match = snd_ad1848_match,
.probe = snd_ad1848_probe,
.remove = snd_ad1848_remove,
#ifdef CONFIG_PM
.suspend = snd_ad1848_suspend,
.resume = snd_ad1848_resume,
#endif
.driver = {
.name = DEV_NAME
}
};
static int __init alsa_card_ad1848_init(void)
{
return isa_register_driver(&snd_ad1848_driver, SNDRV_CARDS);
}
static void __exit alsa_card_ad1848_exit(void)
{
isa_unregister_driver(&snd_ad1848_driver);
}
module_init(alsa_card_ad1848_init);
module_exit(alsa_card_ad1848_exit);