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 dev_info_t dev_info = "snd-pdaudiocf";
  56 static snd_card_t *card_list[SNDRV_CARDS];
  57 static dev_link_t *dev_list;
  58
  59 /*
  60  * prototypes
  61  */
  62 static void pdacf_config(dev_link_t *link);
  63 static int pdacf_event(event_t event, int priority, event_callback_args_t *args);
  64 static void snd_pdacf_detach(dev_link_t *link);
  65
  66 static void pdacf_release(dev_link_t *link)
  67 {
  68         if (link->state & DEV_CONFIG) {
  69                 /* release cs resources */
  70                 pcmcia_release_configuration(link->handle);
  71                 pcmcia_release_io(link->handle, &link->io);
  72                 pcmcia_release_irq(link->handle, &link->irq);
  73                 link->state &= ~DEV_CONFIG;
  74         }
  75 }
  76
  77 /*
  78  * destructor
  79  */
  80 static int snd_pdacf_free(pdacf_t *pdacf)
  81 {
  82         dev_link_t *link = &pdacf->link;
  83
  84         pdacf_release(link);
  85
  86         /* Break the link with Card Services */
  87         if (link->handle)
  88                 pcmcia_deregister_client(link->handle);
  89
  90         card_list[pdacf->index] = NULL;
  91         pdacf->card = NULL;
  92
  93         kfree(pdacf);
  94         return 0;
  95 }
  96
  97 static int snd_pdacf_dev_free(snd_device_t *device)
  98 {
  99         pdacf_t *chip = device->device_data;
 100         return snd_pdacf_free(chip);
 101 }
 102
 103 /*
 104  * snd_pdacf_attach - attach callback for cs
 105  */
 106 static dev_link_t *snd_pdacf_attach(void)
 107 {
 108         client_reg_t client_reg;        /* Register with cardmgr */
 109         dev_link_t *link;               /* Info for cardmgr */
 110         int i, ret;
 111         pdacf_t *pdacf;
 112         snd_card_t *card;
 113         static snd_device_ops_t ops = {
 114                 .dev_free =     snd_pdacf_dev_free,
 115         };
 116
 117         snd_printdd(KERN_DEBUG "pdacf_attach called\n");
 118         /* find an empty slot from the card list */
 119         for (i = 0; i < SNDRV_CARDS; i++) {
 120                 if (! card_list[i])
 121                         break;
 122         }
 123         if (i >= SNDRV_CARDS) {
 124                 snd_printk(KERN_ERR "pdacf: too many cards found\n");
 125                 return NULL;
 126         }
 127         if (! enable[i])
 128                 return NULL; /* disabled explicitly */
 129
 130         /* ok, create a card instance */
 131         card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
 132         if (card == NULL) {
 133                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 134                 return NULL;
 135         }
 136
 137         pdacf = snd_pdacf_create(card);
 138         if (! pdacf)
 139                 return NULL;
 140
 141         if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
 142                 kfree(pdacf);
 143                 snd_card_free(card);
 144                 return NULL;
 145         }
 146
 147         pdacf->index = i;
 148         card_list[i] = card;
 149
 150         link = &pdacf->link;
 151         link->priv = pdacf;
 152
 153         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 154         link->io.NumPorts1 = 16;
 155
 156         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
 157         // link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
 158
 159         link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
 160         link->irq.Handler = pdacf_interrupt;
 161         link->irq.Instance = pdacf;
 162         link->conf.Attributes = CONF_ENABLE_IRQ;
 163         link->conf.IntType = INT_MEMORY_AND_IO;
 164         link->conf.ConfigIndex = 1;
 165         link->conf.Present = PRESENT_OPTION;
 166
 167         /* Chain drivers */
 168         link->next = dev_list;
 169         dev_list = link;
 170
 171         /* Register with Card Services */
 172         client_reg.dev_info = &dev_info;
 173         client_reg.Version = 0x0210;
 174         client_reg.event_callback_args.client_data = link;
 175
 176         ret = pcmcia_register_client(&link->handle, &client_reg);
 177         if (ret != CS_SUCCESS) {
 178                 cs_error(link->handle, RegisterClient, ret);
 179                 snd_pdacf_detach(link);
 180                 return NULL;
 181         }
 182
 183         return link;
 184 }
 185
 186
 187 /**
 188  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 189  * @port: i/o port for the card
 190  * @irq: irq number for the card
 191  *
 192  * this function assigns the specified port and irq, boot the card,
 193  * create pcm and control instances, and initialize the rest hardware.
 194  *
 195  * returns 0 if successful, or a negative error code.
 196  */
 197 static int snd_pdacf_assign_resources(pdacf_t *pdacf, int port, int irq)
 198 {
 199         int err;
 200         snd_card_t *card = pdacf->card;
 201
 202         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 203         pdacf->port = port;
 204         pdacf->irq = irq;
 205         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 206
 207         err = snd_pdacf_ak4117_create(pdacf);
 208         if (err < 0)
 209                 return err;
 210
 211         strcpy(card->driver, "PDAudio-CF");
 212         sprintf(card->shortname, "Core Sound %s", card->driver);
 213         sprintf(card->longname, "%s at 0x%x, irq %i",
 214                 card->shortname, port, irq);
 215
 216         err = snd_pdacf_pcm_new(pdacf);
 217         if (err < 0)
 218                 return err;
 219
 220         snd_card_set_pm_callback(card, snd_pdacf_suspend, snd_pdacf_resume, pdacf);
 221
 222         if ((err = snd_card_register(card)) < 0)
 223                 return err;
 224
 225         return 0;
 226 }
 227
 228
 229 /*
 230  * snd_pdacf_detach - detach callback for cs
 231  */
 232 static void snd_pdacf_detach(dev_link_t *link)
 233 {
 234         pdacf_t *chip = link->priv;
 235
 236         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 237         /* Remove the interface data from the linked list */
 238         {
 239                 dev_link_t **linkp;
 240                 /* Locate device structure */
 241                 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 242                         if (*linkp == link)
 243                                 break;
 244                 if (*linkp)
 245                         *linkp = link->next;
 246         }
 247         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 248                 snd_pdacf_powerdown(chip);
 249         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 250         snd_card_disconnect(chip->card);
 251         snd_card_free_in_thread(chip->card);
 252 }
 253
 254 /*
 255  * configuration callback
 256  */
 257
 258 #define CS_CHECK(fn, ret) \
 259 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 260
 261 static void pdacf_config(dev_link_t *link)
 262 {
 263         client_handle_t handle = link->handle;
 264         pdacf_t *pdacf = link->priv;
 265         tuple_t tuple;
 266         cisparse_t *parse = NULL;
 267         config_info_t conf;
 268         u_short buf[32];
 269         int last_fn, last_ret;
 270
 271         snd_printdd(KERN_DEBUG "pdacf_config called\n");
 272         parse = kmalloc(sizeof(*parse), GFP_KERNEL);
 273         if (! parse) {
 274                 snd_printk(KERN_ERR "pdacf_config: cannot allocate\n");
 275                 return;
 276         }
 277         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 278         tuple.Attributes = 0;
 279         tuple.TupleData = (cisdata_t *)buf;
 280         tuple.TupleDataMax = sizeof(buf);
 281         tuple.TupleOffset = 0;
 282         tuple.DesiredTuple = CISTPL_CONFIG;
 283         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 284         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 285         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, parse));
 286         link->conf.ConfigBase = parse->config.base;
 287         link->conf.ConfigIndex = 0x5;
 288         kfree(parse);
 289
 290         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
 291         link->conf.Vcc = conf.Vcc;
 292
 293         /* Configure card */
 294         link->state |= DEV_CONFIG;
 295
 296         CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
 297         CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
 298         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
 299
 300         if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
 301                 goto failed;
 302
 303         link->dev = &pdacf->node;
 304         link->state &= ~DEV_CONFIG_PENDING;
 305         return;
 306
 307 cs_failed:
 308         cs_error(link->handle, last_fn, last_ret);
 309 failed:
 310         pcmcia_release_configuration(link->handle);
 311         pcmcia_release_io(link->handle, &link->io);
 312         pcmcia_release_irq(link->handle, &link->irq);
 313 }
 314
 315 /*
 316  * event callback
 317  */
 318 static int pdacf_event(event_t event, int priority, event_callback_args_t *args)
 319 {
 320         dev_link_t *link = args->client_data;
 321         pdacf_t *chip = link->priv;
 322
 323         switch (event) {
 324         case CS_EVENT_CARD_REMOVAL:
 325                 snd_printdd(KERN_DEBUG "CARD_REMOVAL..\n");
 326                 link->state &= ~DEV_PRESENT;
 327                 if (link->state & DEV_CONFIG) {
 328                         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE;
 329                 }
 330                 break;
 331         case CS_EVENT_CARD_INSERTION:
 332                 snd_printdd(KERN_DEBUG "CARD_INSERTION..\n");
 333                 link->state |= DEV_PRESENT;
 334                 pdacf_config(link);
 335                 break;
 336 #ifdef CONFIG_PM
 337         case CS_EVENT_PM_SUSPEND:
 338                 snd_printdd(KERN_DEBUG "SUSPEND\n");
 339                 link->state |= DEV_SUSPEND;
 340                 if (chip) {
 341                         snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 342                         snd_pdacf_suspend(chip->card, PMSG_SUSPEND);
 343                 }
 344                 /* Fall through... */
 345         case CS_EVENT_RESET_PHYSICAL:
 346                 snd_printdd(KERN_DEBUG "RESET_PHYSICAL\n");
 347                 if (link->state & DEV_CONFIG)
 348                         pcmcia_release_configuration(link->handle);
 349                 break;
 350         case CS_EVENT_PM_RESUME:
 351                 snd_printdd(KERN_DEBUG "RESUME\n");
 352                 link->state &= ~DEV_SUSPEND;
 353                 /* Fall through... */
 354         case CS_EVENT_CARD_RESET:
 355                 snd_printdd(KERN_DEBUG "CARD_RESET\n");
 356                 if (DEV_OK(link)) {
 357                         snd_printdd(KERN_DEBUG "requestconfig...\n");
 358                         pcmcia_request_configuration(link->handle, &link->conf);
 359                         if (chip) {
 360                                 snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 361                                 snd_pdacf_resume(chip->card);
 362                         }
 363                 }
 364                 snd_printdd(KERN_DEBUG "resume done!\n");
 365                 break;
 366 #endif
 367         }
 368         return 0;
 369 }
 370
 371 /*
 372  * Module entry points
 373  */
 374 static struct pcmcia_device_id snd_pdacf_ids[] = {
 375         PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45),
 376         PCMCIA_DEVICE_NULL
 377 };
 378 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 379
 380 static struct pcmcia_driver pdacf_cs_driver = {
 381         .owner          = THIS_MODULE,
 382         .drv            = {
 383                 .name   = "snd-pdaudiocf",
 384         },
 385         .attach         = snd_pdacf_attach,
 386         .event          = pdacf_event,
 387         .detach         = snd_pdacf_detach,
 388         .id_table       = snd_pdacf_ids,
 389 };
 390
 391 static int __init init_pdacf(void)
 392 {
 393         return pcmcia_register_driver(&pdacf_cs_driver);
 394 }
 395
 396 static void __exit exit_pdacf(void)
 397 {
 398         pcmcia_unregister_driver(&pdacf_cs_driver);
 399         BUG_ON(dev_list != NULL);
 400 }
 401
 402 module_init(init_pdacf);
 403 module_exit(exit_pdacf);