/*
* Driver for Sound Core PDAudioCF soundcard
*
* Copyright (c) 2003 by Jaroslav Kysela <perex@suse.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/driver.h>
#include <sound/core.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <pcmcia/version.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@suse.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 int 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 dev_info_t dev_info = "snd-pdaudiocf";
static snd_card_t *card_list[SNDRV_CARDS];
static dev_link_t *dev_list;
/*
* prototypes
*/
static void pdacf_config(dev_link_t *link);
static int pdacf_event(event_t event, int priority, event_callback_args_t *args);
static void snd_pdacf_detach(dev_link_t *link);
static void pdacf_release(dev_link_t *link)
{
if (link->state & DEV_CONFIG) {
/* release cs resources */
pcmcia_release_configuration(link->handle);
pcmcia_release_io(link->handle, &link->io);
pcmcia_release_irq(link->handle, &link->irq);
link->state &= ~DEV_CONFIG;
}
}
/*
* destructor
*/
static int snd_pdacf_free(pdacf_t *pdacf)
{
dev_link_t *link = &pdacf->link;
pdacf_release(link);
/* Break the link with Card Services */
if (link->handle)
pcmcia_deregister_client(link->handle);
card_list[pdacf->index] = NULL;
pdacf->card = NULL;
kfree(pdacf);
return 0;
}
static int snd_pdacf_dev_free(snd_device_t *device)
{
pdacf_t *chip = device->device_data;
return snd_pdacf_free(chip);
}
/*
* snd_pdacf_attach - attach callback for cs
*/
static dev_link_t *snd_pdacf_attach(void)
{
client_reg_t client_reg; /* Register with cardmgr */
dev_link_t *link; /* Info for cardmgr */
int i, ret;
pdacf_t *pdacf;
snd_card_t *card;
static snd_device_ops_t 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 NULL;
}
if (! enable[i])
return NULL; /* disabled explicitly */
/* ok, create a card instance */
card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
if (card == NULL) {
snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
return NULL;
}
pdacf = snd_pdacf_create(card);
if (! pdacf)
return NULL;
if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
kfree(pdacf);
snd_card_free(card);
return NULL;
}
pdacf->index = i;
card_list[i] = card;
link = &pdacf->link;
link->priv = pdacf;
link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
link->io.NumPorts1 = 16;
link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
// link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
link->irq.Handler = pdacf_interrupt;
link->irq.Instance = pdacf;
link->conf.Attributes = CONF_ENABLE_IRQ;
link->conf.IntType = INT_MEMORY_AND_IO;
link->conf.ConfigIndex = 1;
link->conf.Present = PRESENT_OPTION;
/* Chain drivers */
link->next = dev_list;
dev_list = link;
/* Register with Card Services */
client_reg.dev_info = &dev_info;
client_reg.EventMask =
CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL
#ifdef CONFIG_PM
| CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET
| CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME
#endif
;
client_reg.event_handler = &pdacf_event;
client_reg.Version = 0x0210;
client_reg.event_callback_args.client_data = link;
ret = pcmcia_register_client(&link->handle, &client_reg);
if (ret != CS_SUCCESS) {
cs_error(link->handle, RegisterClient, ret);
snd_pdacf_detach(link);
return NULL;
}
return 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(pdacf_t *pdacf, int port, int irq)
{
int err;
snd_card_t *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;
snd_card_set_pm_callback(card, snd_pdacf_suspend, snd_pdacf_resume, pdacf);
if ((err = snd_card_register(card)) < 0)
return err;
return 0;
}
/*
* snd_pdacf_detach - detach callback for cs
*/
static void snd_pdacf_detach(dev_link_t *link)
{
pdacf_t *chip = link->priv;
snd_printdd(KERN_DEBUG "pdacf_detach called\n");
/* Remove the interface data from the linked list */
{
dev_link_t **linkp;
/* Locate device structure */
for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
if (*linkp == link)
break;
if (*linkp)
*linkp = link->next;
}
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_in_thread(chip->card);
}
/*
* configuration callback
*/
#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
static void pdacf_config(dev_link_t *link)
{
client_handle_t handle = link->handle;
pdacf_t *pdacf = link->priv;
tuple_t tuple;
cisparse_t *parse = NULL;
config_info_t conf;
u_short buf[32];
int last_fn, last_ret;
snd_printdd(KERN_DEBUG "pdacf_config called\n");
parse = kmalloc(sizeof(*parse), GFP_KERNEL);
if (! parse) {
snd_printk(KERN_ERR "pdacf_config: cannot allocate\n");
return;
}
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
tuple.Attributes = 0;
tuple.TupleData = (cisdata_t *)buf;
tuple.TupleDataMax = sizeof(buf);
tuple.TupleOffset = 0;
tuple.DesiredTuple = CISTPL_CONFIG;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, parse));
link->conf.ConfigBase = parse->config.base;
link->conf.ConfigIndex = 0x5;
kfree(parse);
CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
link->conf.Vcc = conf.Vcc;
/* Configure card */
link->state |= DEV_CONFIG;
CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
goto failed;
link->dev = &pdacf->node;
link->state &= ~DEV_CONFIG_PENDING;
return;
cs_failed:
cs_error(link->handle, last_fn, last_ret);
failed:
pcmcia_release_configuration(link->handle);
pcmcia_release_io(link->handle, &link->io);
pcmcia_release_irq(link->handle, &link->irq);
}
/*
* event callback
*/
static int pdacf_event(event_t event, int priority, event_callback_args_t *args)
{
dev_link_t *link = args->client_data;
pdacf_t *chip = link->priv;
switch (event) {
case CS_EVENT_CARD_REMOVAL:
snd_printdd(KERN_DEBUG "CARD_REMOVAL..\n");
link->state &= ~DEV_PRESENT;
if (link->state & DEV_CONFIG) {
chip->chip_status |= PDAUDIOCF_STAT_IS_STALE;
}
break;
case CS_EVENT_CARD_INSERTION:
snd_printdd(KERN_DEBUG "CARD_INSERTION..\n");
link->state |= DEV_PRESENT;
pdacf_config(link);
break;
#ifdef CONFIG_PM
case CS_EVENT_PM_SUSPEND:
snd_printdd(KERN_DEBUG "SUSPEND\n");
link->state |= DEV_SUSPEND;
if (chip) {
snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
snd_pdacf_suspend(chip->card, PMSG_SUSPEND);
}
/* Fall through... */
case CS_EVENT_RESET_PHYSICAL:
snd_printdd(KERN_DEBUG "RESET_PHYSICAL\n");
if (link->state & DEV_CONFIG)
pcmcia_release_configuration(link->handle);
break;
case CS_EVENT_PM_RESUME:
snd_printdd(KERN_DEBUG "RESUME\n");
link->state &= ~DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_CARD_RESET:
snd_printdd(KERN_DEBUG "CARD_RESET\n");
if (DEV_OK(link)) {
snd_printdd(KERN_DEBUG "requestconfig...\n");
pcmcia_request_configuration(link->handle, &link->conf);
if (chip) {
snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
snd_pdacf_resume(chip->card);
}
}
snd_printdd(KERN_DEBUG "resume done!\n");
break;
#endif
}
return 0;
}
/*
* Module entry points
*/
static struct pcmcia_driver pdacf_cs_driver = {
.owner = THIS_MODULE,
.drv = {
.name = "snd-pdaudiocf",
},
.attach = snd_pdacf_attach,
.detach = snd_pdacf_detach
};
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);
BUG_ON(dev_list != NULL);
}
module_init(init_pdacf);
module_exit(exit_pdacf);
