LXR linux/sound/pcmcia/pdaudiocf/pdaudiocf.c

   1/*
   2 * Driver for Sound Core PDAudioCF soundcard
   3 *
   4 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
   5 *
   6 *   This program is free software; you can redistribute it and/or modify
   7 *   it under the terms of the GNU General Public License as published by
   8 *   the Free Software Foundation; either version 2 of the License, or
   9 *   (at your option) any later version.
  10 *
  11 *   This program is distributed in the hope that it will be useful,
  12 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *   GNU General Public License for more details.
  15 *
  16 *   You should have received a copy of the GNU General Public License
  17 *   along with this program; if not, write to the Free Software
  18 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 */
  20
  21#include <sound/core.h>
  22#include <linux/slab.h>
  23#include <linux/moduleparam.h>
  24#include <pcmcia/ciscode.h>
  25#include <pcmcia/cisreg.h>
  26#include "pdaudiocf.h"
  27#include <sound/initval.h>
  28#include <linux/init.h>
  29
  30/*
  31 */
  32
  33#define CARD_NAME       "PDAudio-CF"
  34
  35MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  36MODULE_DESCRIPTION("Sound Core " CARD_NAME);
  37MODULE_LICENSE("GPL");
  38MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
  39
  40static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  41static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  42static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable switches */
  43
  44module_param_array(index, int, NULL, 0444);
  45MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  46module_param_array(id, charp, NULL, 0444);
  47MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  48module_param_array(enable, bool, NULL, 0444);
  49MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  50
  51/*
  52 */
  53
  54static struct snd_card *card_list[SNDRV_CARDS];
  55
  56/*
  57 * prototypes
  58 */
  59static int pdacf_config(struct pcmcia_device *link);
  60static void snd_pdacf_detach(struct pcmcia_device *p_dev);
  61
  62static void pdacf_release(struct pcmcia_device *link)
  63{
  64        pcmcia_disable_device(link);
  65}
  66
  67/*
  68 * destructor
  69 */
  70static int snd_pdacf_free(struct snd_pdacf *pdacf)
  71{
  72        struct pcmcia_device *link = pdacf->p_dev;
  73
  74        pdacf_release(link);
  75
  76        card_list[pdacf->index] = NULL;
  77        pdacf->card = NULL;
  78
  79        kfree(pdacf);
  80        return 0;
  81}
  82
  83static int snd_pdacf_dev_free(struct snd_device *device)
  84{
  85        struct snd_pdacf *chip = device->device_data;
  86        return snd_pdacf_free(chip);
  87}
  88
  89/*
  90 * snd_pdacf_attach - attach callback for cs
  91 */
  92static int snd_pdacf_probe(struct pcmcia_device *link)
  93{
  94        int i;
  95        struct snd_pdacf *pdacf;
  96        struct snd_card *card;
  97        static struct snd_device_ops ops = {
  98                .dev_free =     snd_pdacf_dev_free,
  99        };
 100
 101        snd_printdd(KERN_DEBUG "pdacf_attach called\n");
 102        /* find an empty slot from the card list */
 103        for (i = 0; i < SNDRV_CARDS; i++) {
 104                if (! card_list[i])
 105                        break;
 106        }
 107        if (i >= SNDRV_CARDS) {
 108                snd_printk(KERN_ERR "pdacf: too many cards found\n");
 109                return -EINVAL;
 110        }
 111        if (! enable[i])
 112                return -ENODEV; /* disabled explicitly */
 113
 114        /* ok, create a card instance */
 115        card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
 116        if (card == NULL) {
 117                snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 118                return -ENOMEM;
 119        }
 120
 121        pdacf = snd_pdacf_create(card);
 122        if (! pdacf)
 123                return -EIO;
 124
 125        if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
 126                kfree(pdacf);
 127                snd_card_free(card);
 128                return -ENODEV;
 129        }
 130
 131        snd_card_set_dev(card, &handle_to_dev(link));
 132
 133        pdacf->index = i;
 134        card_list[i] = card;
 135
 136        pdacf->p_dev = link;
 137        link->priv = pdacf;
 138
 139        link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 140        link->io.NumPorts1 = 16;
 141
 142        link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
 143        // link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
 144
 145        link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
 146        link->irq.Handler = pdacf_interrupt;
 147        link->irq.Instance = pdacf;
 148        link->conf.Attributes = CONF_ENABLE_IRQ;
 149        link->conf.IntType = INT_MEMORY_AND_IO;
 150        link->conf.ConfigIndex = 1;
 151        link->conf.Present = PRESENT_OPTION;
 152
 153        return pdacf_config(link);
 154}
 155
 156
 157/**
 158 * snd_pdacf_assign_resources - initialize the hardware and card instance.
 159 * @port: i/o port for the card
 160 * @irq: irq number for the card
 161 *
 162 * this function assigns the specified port and irq, boot the card,
 163 * create pcm and control instances, and initialize the rest hardware.
 164 *
 165 * returns 0 if successful, or a negative error code.
 166 */
 167static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
 168{
 169        int err;
 170        struct snd_card *card = pdacf->card;
 171
 172        snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 173        pdacf->port = port;
 174        pdacf->irq = irq;
 175        pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 176
 177        err = snd_pdacf_ak4117_create(pdacf);
 178        if (err < 0)
 179                return err;     
 180
 181        strcpy(card->driver, "PDAudio-CF");
 182        sprintf(card->shortname, "Core Sound %s", card->driver);
 183        sprintf(card->longname, "%s at 0x%x, irq %i",
 184                card->shortname, port, irq);
 185
 186        err = snd_pdacf_pcm_new(pdacf);
 187        if (err < 0)
 188                return err;
 189
 190        if ((err = snd_card_register(card)) < 0)
 191                return err;
 192
 193        return 0;
 194}
 195
 196
 197/*
 198 * snd_pdacf_detach - detach callback for cs
 199 */
 200static void snd_pdacf_detach(struct pcmcia_device *link)
 201{
 202        struct snd_pdacf *chip = link->priv;
 203
 204        snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 205
 206        if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 207                snd_pdacf_powerdown(chip);
 208        chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 209        snd_card_disconnect(chip->card);
 210        snd_card_free_when_closed(chip->card);
 211}
 212
 213/*
 214 * configuration callback
 215 */
 216
 217#define CS_CHECK(fn, ret) \
 218do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 219
 220static int pdacf_config(struct pcmcia_device *link)
 221{
 222        struct snd_pdacf *pdacf = link->priv;
 223        int last_fn, last_ret;
 224
 225        snd_printdd(KERN_DEBUG "pdacf_config called\n");
 226        link->conf.ConfigIndex = 0x5;
 227
 228        CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
 229        CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
 230        CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
 231
 232        if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
 233                goto failed;
 234
 235        link->dev_node = &pdacf->node;
 236        return 0;
 237
 238cs_failed:
 239        cs_error(link, last_fn, last_ret);
 240failed:
 241        pcmcia_disable_device(link);
 242        return -ENODEV;
 243}
 244
 245#ifdef CONFIG_PM
 246
 247static int pdacf_suspend(struct pcmcia_device *link)
 248{
 249        struct snd_pdacf *chip = link->priv;
 250
 251        snd_printdd(KERN_DEBUG "SUSPEND\n");
 252        if (chip) {
 253                snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 254                snd_pdacf_suspend(chip, PMSG_SUSPEND);
 255        }
 256
 257        return 0;
 258}
 259
 260static int pdacf_resume(struct pcmcia_device *link)
 261{
 262        struct snd_pdacf *chip = link->priv;
 263
 264        snd_printdd(KERN_DEBUG "RESUME\n");
 265        if (pcmcia_dev_present(link)) {
 266                if (chip) {
 267                        snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 268                        snd_pdacf_resume(chip);
 269                }
 270        }
 271        snd_printdd(KERN_DEBUG "resume done!\n");
 272
 273        return 0;
 274}
 275
 276#endif
 277
 278/*
 279 * Module entry points
 280 */
 281static struct pcmcia_device_id snd_pdacf_ids[] = {
 282        /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
 283        PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
 284        PCMCIA_DEVICE_NULL
 285};
 286MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 287
 288static struct pcmcia_driver pdacf_cs_driver = {
 289        .owner          = THIS_MODULE,
 290        .drv            = {
 291                .name   = "snd-pdaudiocf",
 292        },
 293        .probe          = snd_pdacf_probe,
 294        .remove         = snd_pdacf_detach,
 295        .id_table       = snd_pdacf_ids,
 296#ifdef CONFIG_PM
 297        .suspend        = pdacf_suspend,
 298        .resume         = pdacf_resume,
 299#endif
 300
 301};
 302
 303static int __init init_pdacf(void)
 304{
 305        return pcmcia_register_driver(&pdacf_cs_driver);
 306}
 307
 308static void __exit exit_pdacf(void)
 309{
 310        pcmcia_unregister_driver(&pdacf_cs_driver);
 311}
 312
 313module_init(init_pdacf);
 314module_exit(exit_pdacf);
 315