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pdaudiocf_old.c

/*
 * 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
 */

/*
 *  please copy pdacf.conf to /etc/pcmcia directory
 */

#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 "compat_cs.h"  /* remove from 2.5 tree */
#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 struct snd_card *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);

#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)
/*
 * print the error message related with cs
 */
static void cs_error(client_handle_t handle, int func, int ret)
{
      error_info_t err = { func, ret };
      CardServices(ReportError, handle, &err);
}
#endif

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(struct snd_pdacf *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(struct snd_device *device)
{
      struct snd_pdacf *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;
      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 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;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) /* correct version? */
      link->release.function = (void (*)(unsigned long))pdacf_release;
      link->release.data = (u_long)link;
#endif
      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;
#ifndef PCMCIA_DEVICE_MANF_CARD
      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;
#endif
      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(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(dev_link_t *link)
{
      struct snd_pdacf *chip = link->priv;

#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) /* correct version? */
      del_timer(&link->release);
#endif
      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_when_closed(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;
      struct snd_pdacf *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;
      struct snd_pdacf *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) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) /* correct version? */
                  mod_timer(&link->release, jiffies + HZ/20);
#endif
                  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, 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);
                  }
            }
            snd_printdd(KERN_DEBUG "resume done!\n");
            break;
#endif
      }
      return 0;
}

/*
 * Module entry points
 */
#ifdef PCMCIA_DEVICE_MANF_CARD
static struct pcmcia_device_id snd_pdacf_ids[] = {
      PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45),
      PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
#endif

static struct pcmcia_driver pdacf_cs_driver = {
      .owner            = THIS_MODULE,
      .drv        = {
            .name = "snd-pdaudiocf",
      },
      .attach         = snd_pdacf_attach,
#ifdef PCMCIA_DEVICE_MANF_CARD
      .event            = pdacf_event,
      .id_table   = snd_pdacf_ids,
#endif
      .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);


EXPORT_NO_SYMBOLS; /* FIXME: for old kernels */

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