sound/pcmcia/pdaudiocf/pdaudiocf.c

   1 /*
   2  * Driver for Sound Core PDAudioCF soundcard
   3  *
   4  * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.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/driver.h>
  22 #include <sound/core.h>
  23 #include <linux/slab.h>
  24 #include <linux/moduleparam.h>
  25 #include <pcmcia/ciscode.h>
  26 #include <pcmcia/cisreg.h>
  27 #include "pdaudiocf.h"
  28 #include <sound/initval.h>
  29 #include <linux/init.h>
  30
  31 /*
  32  */
  33
  34 #define CARD_NAME       "PDAudio-CF"
  35
  36 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  37 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
  38 MODULE_LICENSE("GPL");
  39 MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
  40
  41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  43 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable switches */
  44
  45 module_param_array(index, int, NULL, 0444);
  46 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  47 module_param_array(id, charp, NULL, 0444);
  48 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  49 module_param_array(enable, bool, NULL, 0444);
  50 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  51
  52 /*
  53  */
  54
  55 static struct snd_card *card_list[SNDRV_CARDS];
  56
  57 /*
  58  * prototypes
  59  */
  60 static void pdacf_config(dev_link_t *link);
  61 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
  62
  63 static void pdacf_release(dev_link_t *link)
  64 {
  65         pcmcia_disable_device(link->handle);
  66 }
  67
  68 /*
  69  * destructor
  70  */
  71 static int snd_pdacf_free(struct snd_pdacf *pdacf)
  72 {
  73         dev_link_t *link = &pdacf->link;
  74
  75         pdacf_release(link);
  76
  77         card_list[pdacf->index] = NULL;
  78         pdacf->card = NULL;
  79
  80         kfree(pdacf);
  81         return 0;
  82 }
  83
  84 static int snd_pdacf_dev_free(struct snd_device *device)
  85 {
  86         struct snd_pdacf *chip = device->device_data;
  87         return snd_pdacf_free(chip);
  88 }
  89
  90 /*
  91  * snd_pdacf_attach - attach callback for cs
  92  */
  93 static int snd_pdacf_attach(struct pcmcia_device *p_dev)
  94 {
  95         int i;
  96         dev_link_t *link;               /* Info for cardmgr */
  97         struct snd_pdacf *pdacf;
  98         struct snd_card *card;
  99         static struct snd_device_ops ops = {
 100                 .dev_free =     snd_pdacf_dev_free,
 101         };
 102
 103         snd_printdd(KERN_DEBUG "pdacf_attach called\n");
 104         /* find an empty slot from the card list */
 105         for (i = 0; i < SNDRV_CARDS; i++) {
 106                 if (! card_list[i])
 107                         break;
 108         }
 109         if (i >= SNDRV_CARDS) {
 110                 snd_printk(KERN_ERR "pdacf: too many cards found\n");
 111                 return -EINVAL;
 112         }
 113         if (! enable[i])
 114                 return -ENODEV; /* disabled explicitly */
 115
 116         /* ok, create a card instance */
 117         card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
 118         if (card == NULL) {
 119                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 120                 return -ENOMEM;
 121         }
 122
 123         pdacf = snd_pdacf_create(card);
 124         if (! pdacf)
 125                 return -EIO;
 126
 127         if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
 128                 kfree(pdacf);
 129                 snd_card_free(card);
 130                 return -ENODEV;
 131         }
 132
 133         pdacf->index = i;
 134         card_list[i] = card;
 135
 136         link = &pdacf->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         /* Chain drivers */
 154         link->next = NULL;
 155
 156         link->handle = p_dev;
 157         pdacf_config(link);
 158
 159         return 0;
 160 }
 161
 162
 163 /**
 164  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 165  * @port: i/o port for the card
 166  * @irq: irq number for the card
 167  *
 168  * this function assigns the specified port and irq, boot the card,
 169  * create pcm and control instances, and initialize the rest hardware.
 170  *
 171  * returns 0 if successful, or a negative error code.
 172  */
 173 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
 174 {
 175         int err;
 176         struct snd_card *card = pdacf->card;
 177
 178         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 179         pdacf->port = port;
 180         pdacf->irq = irq;
 181         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 182
 183         err = snd_pdacf_ak4117_create(pdacf);
 184         if (err < 0)
 185                 return err;
 186
 187         strcpy(card->driver, "PDAudio-CF");
 188         sprintf(card->shortname, "Core Sound %s", card->driver);
 189         sprintf(card->longname, "%s at 0x%x, irq %i",
 190                 card->shortname, port, irq);
 191
 192         err = snd_pdacf_pcm_new(pdacf);
 193         if (err < 0)
 194                 return err;
 195
 196         if ((err = snd_card_register(card)) < 0)
 197                 return err;
 198
 199         return 0;
 200 }
 201
 202
 203 /*
 204  * snd_pdacf_detach - detach callback for cs
 205  */
 206 static void snd_pdacf_detach(struct pcmcia_device *p_dev)
 207 {
 208         dev_link_t *link = dev_to_instance(p_dev);
 209         struct snd_pdacf *chip = link->priv;
 210
 211         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 212
 213         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 214                 snd_pdacf_powerdown(chip);
 215         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 216         snd_card_disconnect(chip->card);
 217         snd_card_free_in_thread(chip->card);
 218 }
 219
 220 /*
 221  * configuration callback
 222  */
 223
 224 #define CS_CHECK(fn, ret) \
 225 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 226
 227 static void pdacf_config(dev_link_t *link)
 228 {
 229         client_handle_t handle = link->handle;
 230         struct snd_pdacf *pdacf = link->priv;
 231         tuple_t tuple;
 232         cisparse_t *parse = NULL;
 233         config_info_t conf;
 234         u_short buf[32];
 235         int last_fn, last_ret;
 236
 237         snd_printdd(KERN_DEBUG "pdacf_config called\n");
 238         parse = kmalloc(sizeof(*parse), GFP_KERNEL);
 239         if (! parse) {
 240                 snd_printk(KERN_ERR "pdacf_config: cannot allocate\n");
 241                 return;
 242         }
 243         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 244         tuple.Attributes = 0;
 245         tuple.TupleData = (cisdata_t *)buf;
 246         tuple.TupleDataMax = sizeof(buf);
 247         tuple.TupleOffset = 0;
 248         tuple.DesiredTuple = CISTPL_CONFIG;
 249         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 250         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 251         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, parse));
 252         link->conf.ConfigBase = parse->config.base;
 253         link->conf.ConfigIndex = 0x5;
 254         kfree(parse);
 255
 256         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
 257         link->conf.Vcc = conf.Vcc;
 258
 259         /* Configure card */
 260         link->state |= DEV_CONFIG;
 261
 262         CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
 263         CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
 264         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
 265
 266         if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
 267                 goto failed;
 268
 269         link->dev = &pdacf->node;
 270         link->state &= ~DEV_CONFIG_PENDING;
 271         return;
 272
 273 cs_failed:
 274         cs_error(link->handle, last_fn, last_ret);
 275 failed:
 276         pcmcia_release_configuration(link->handle);
 277         pcmcia_release_io(link->handle, &link->io);
 278         pcmcia_release_irq(link->handle, &link->irq);
 279 }
 280
 281 #ifdef CONFIG_PM
 282
 283 static int pdacf_suspend(struct pcmcia_device *dev)
 284 {
 285         dev_link_t *link = dev_to_instance(dev);
 286         struct snd_pdacf *chip = link->priv;
 287
 288         snd_printdd(KERN_DEBUG "SUSPEND\n");
 289         link->state |= DEV_SUSPEND;
 290         if (chip) {
 291                 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 292                 snd_pdacf_suspend(chip, PMSG_SUSPEND);
 293         }
 294
 295         snd_printdd(KERN_DEBUG "RESET_PHYSICAL\n");
 296         if (link->state & DEV_CONFIG)
 297                 pcmcia_release_configuration(link->handle);
 298
 299         return 0;
 300 }
 301
 302 static int pdacf_resume(struct pcmcia_device *dev)
 303 {
 304         dev_link_t *link = dev_to_instance(dev);
 305         struct snd_pdacf *chip = link->priv;
 306
 307         snd_printdd(KERN_DEBUG "RESUME\n");
 308         link->state &= ~DEV_SUSPEND;
 309
 310         snd_printdd(KERN_DEBUG "CARD_RESET\n");
 311         if (DEV_OK(link)) {
 312                 snd_printdd(KERN_DEBUG "requestconfig...\n");
 313                 pcmcia_request_configuration(link->handle, &link->conf);
 314                 if (chip) {
 315                         snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 316                         snd_pdacf_resume(chip);
 317                 }
 318         }
 319         snd_printdd(KERN_DEBUG "resume done!\n");
 320
 321         return 0;
 322 }
 323
 324 #endif
 325
 326 /*
 327  * Module entry points
 328  */
 329 static struct pcmcia_device_id snd_pdacf_ids[] = {
 330         PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45),
 331         PCMCIA_DEVICE_NULL
 332 };
 333 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 334
 335 static struct pcmcia_driver pdacf_cs_driver = {
 336         .owner          = THIS_MODULE,
 337         .drv            = {
 338                 .name   = "snd-pdaudiocf",
 339         },
 340         .probe          = snd_pdacf_attach,
 341         .remove         = snd_pdacf_detach,
 342         .id_table       = snd_pdacf_ids,
 343 #ifdef CONFIG_PM
 344         .suspend        = pdacf_suspend,
 345         .resume         = pdacf_resume,
 346 #endif
 347
 348 };
 349
 350 static int __init init_pdacf(void)
 351 {
 352         return pcmcia_register_driver(&pdacf_cs_driver);
 353 }
 354
 355 static void __exit exit_pdacf(void)
 356 {
 357         pcmcia_unregister_driver(&pdacf_cs_driver);
 358 }
 359
 360 module_init(init_pdacf);
 361 module_exit(exit_pdacf);