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linux/sound/pcmcia/pdaudiocf/pdaudiocf.c

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/*
* Driver for Sound Core PDAudioCF soundcard
*
* Copyright (c) 2003 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 <sound/core.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <pcmcia/ciscode.h>
#include <pcmcia/cisreg.h>
#include "pdaudiocf.h"
#include <sound/initval.h>
#include <linux/init.h>
/*
*/
#define CARD_NAME "PDAudio-CF"
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Sound Core " CARD_NAME);
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
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_PNP; /* Enable switches */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
/*
*/
static struct snd_card *card_list[SNDRV_CARDS];
/*
* prototypes
*/
static int pdacf_config(struct pcmcia_device *link);
static void snd_pdacf_detach(struct pcmcia_device *p_dev);
static void pdacf_release(struct pcmcia_device *link)
{
pcmcia_disable_device(link);
}
/*
* destructor
*/
static int snd_pdacf_free(struct snd_pdacf *pdacf)
{
struct pcmcia_device *link = pdacf->p_dev;
pdacf_release(link);
card_list[pdacf->index] = NULL;
pdacf->card = NULL;
kfree(pdacf);
return 0;
}
static int snd_pdacf_dev_free(struct snd_device *device)
{
struct snd_pdacf *chip = device->device_data;
return snd_pdacf_free(chip);
}
/*
* snd_pdacf_attach - attach callback for cs
*/
static int snd_pdacf_probe(struct pcmcia_device *link)
{
int i, err;
struct snd_pdacf *pdacf;
struct snd_card *card;
static struct snd_device_ops ops = {
.dev_free = snd_pdacf_dev_free,
};
snd_printdd(KERN_DEBUG "pdacf_attach called\n");
/* find an empty slot from the card list */
for (i = 0; i < SNDRV_CARDS; i++) {
if (! card_list[i])
break;
}
if (i >= SNDRV_CARDS) {
snd_printk(KERN_ERR "pdacf: too many cards found\n");
return -EINVAL;
}
if (! enable[i])
return -ENODEV; /* disabled explicitly */
/* ok, create a card instance */
err = snd_card_create(index[i], id[i], THIS_MODULE, 0, &card);
if (err < 0) {
snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
return err;
}
pdacf = snd_pdacf_create(card);
if (!pdacf) {
snd_card_free(card);
return -ENOMEM;
}
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
if (err < 0) {
kfree(pdacf);
snd_card_free(card);
return err;
}
snd_card_set_dev(card, &link->dev);
pdacf->index = i;
card_list[i] = card;
pdacf->p_dev = link;
link->priv = pdacf;
link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
link->resource[0]->end = 16;
link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
link->config_index = 1;
link->config_regs = PRESENT_OPTION;
return pdacf_config(link);
}
/**
* snd_pdacf_assign_resources - initialize the hardware and card instance.
* @port: i/o port for the card
* @irq: irq number for the card
*
* this function assigns the specified port and irq, boot the card,
* create pcm and control instances, and initialize the rest hardware.
*
* returns 0 if successful, or a negative error code.
*/
static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
{
int err;
struct snd_card *card = pdacf->card;
snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
pdacf->port = port;
pdacf->irq = irq;
pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
err = snd_pdacf_ak4117_create(pdacf);
if (err < 0)
return err;
strcpy(card->driver, "PDAudio-CF");
sprintf(card->shortname, "Core Sound %s", card->driver);
sprintf(card->longname, "%s at 0x%x, irq %i",
card->shortname, port, irq);
err = snd_pdacf_pcm_new(pdacf);
if (err < 0)
return err;
if ((err = snd_card_register(card)) < 0)
return err;
return 0;
}
/*
* snd_pdacf_detach - detach callback for cs
*/
static void snd_pdacf_detach(struct pcmcia_device *link)
{
struct snd_pdacf *chip = link->priv;
snd_printdd(KERN_DEBUG "pdacf_detach called\n");
if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
snd_pdacf_powerdown(chip);
chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
snd_card_disconnect(chip->card);
snd_card_free_when_closed(chip->card);
}
/*
* configuration callback
*/
static int pdacf_config(struct pcmcia_device *link)
{
struct snd_pdacf *pdacf = link->priv;
int ret;
snd_printdd(KERN_DEBUG "pdacf_config called\n");
link->config_index = 0x5;
link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
ret = pcmcia_request_io(link);
if (ret)
goto failed;
ret = pcmcia_request_irq(link, pdacf_interrupt);
if (ret)
goto failed;
ret = pcmcia_enable_device(link);
if (ret)
goto failed;
if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
link->irq) < 0)
goto failed;
return 0;
failed:
pcmcia_disable_device(link);
return -ENODEV;
}
#ifdef CONFIG_PM
static int pdacf_suspend(struct pcmcia_device *link)
{
struct snd_pdacf *chip = link->priv;
snd_printdd(KERN_DEBUG "SUSPEND\n");
if (chip) {
snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
snd_pdacf_suspend(chip);
}
return 0;
}
static int pdacf_resume(struct pcmcia_device *link)
{
struct snd_pdacf *chip = link->priv;
snd_printdd(KERN_DEBUG "RESUME\n");
if (pcmcia_dev_present(link)) {
if (chip) {
snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
snd_pdacf_resume(chip);
}
}
snd_printdd(KERN_DEBUG "resume done!\n");
return 0;
}
#endif
/*
* Module entry points
*/
static const struct pcmcia_device_id snd_pdacf_ids[] = {
/* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
static struct pcmcia_driver pdacf_cs_driver = {
.owner = THIS_MODULE,
.name = "snd-pdaudiocf",
.probe = snd_pdacf_probe,
.remove = snd_pdacf_detach,
.id_table = snd_pdacf_ids,
#ifdef CONFIG_PM
.suspend = pdacf_suspend,
.resume = pdacf_resume,
#endif
};
static int __init init_pdacf(void)
{
return pcmcia_register_driver(&pdacf_cs_driver);
}
static void __exit exit_pdacf(void)
{
pcmcia_unregister_driver(&pdacf_cs_driver);
}
module_init(init_pdacf);
module_exit(exit_pdacf);
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