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/version.h>
  26 #include <pcmcia/ciscode.h>
  27 #include <pcmcia/cisreg.h>
  28 #include "pdaudiocf.h"
  29 #include <sound/initval.h>
  30 #include <linux/init.h>
  31
  32 /*
  33  */
  34
  35 #define CARD_NAME       "PDAudio-CF"
  36
  37 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  38 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
  39 MODULE_LICENSE("GPL");
  40 MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
  41
  42 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  43 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  44 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable switches */
  45
  46 module_param_array(index, int, NULL, 0444);
  47 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  48 module_param_array(id, charp, NULL, 0444);
  49 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  50 module_param_array(enable, bool, NULL, 0444);
  51 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  52
  53 /*
  54  */
  55
  56 static dev_info_t dev_info = "snd-pdaudiocf";
  57 static snd_card_t *card_list[SNDRV_CARDS];
  58 static dev_link_t *dev_list;
  59
  60 /*
  61  * prototypes
  62  */
  63 static void pdacf_config(dev_link_t *link);
  64 static int pdacf_event(event_t event, int priority, event_callback_args_t *args);
  65 static void snd_pdacf_detach(dev_link_t *link);
  66
  67 static void pdacf_release(dev_link_t *link)
  68 {
  69         if (link->state & DEV_CONFIG) {
  70                 /* release cs resources */
  71                 pcmcia_release_configuration(link->handle);
  72                 pcmcia_release_io(link->handle, &link->io);
  73                 pcmcia_release_irq(link->handle, &link->irq);
  74                 link->state &= ~DEV_CONFIG;
  75         }
  76 }
  77
  78 /*
  79  * destructor
  80  */
  81 static int snd_pdacf_free(pdacf_t *pdacf)
  82 {
  83         dev_link_t *link = &pdacf->link;
  84
  85         pdacf_release(link);
  86
  87         /* Break the link with Card Services */
  88         if (link->handle)
  89                 pcmcia_deregister_client(link->handle);
  90
  91         card_list[pdacf->index] = NULL;
  92         pdacf->card = NULL;
  93
  94         kfree(pdacf);
  95         return 0;
  96 }
  97
  98 static int snd_pdacf_dev_free(snd_device_t *device)
  99 {
 100         pdacf_t *chip = device->device_data;
 101         return snd_pdacf_free(chip);
 102 }
 103
 104 /*
 105  * snd_pdacf_attach - attach callback for cs
 106  */
 107 static dev_link_t *snd_pdacf_attach(void)
 108 {
 109         client_reg_t client_reg;        /* Register with cardmgr */
 110         dev_link_t *link;               /* Info for cardmgr */
 111         int i, ret;
 112         pdacf_t *pdacf;
 113         snd_card_t *card;
 114         static snd_device_ops_t ops = {
 115                 .dev_free =     snd_pdacf_dev_free,
 116         };
 117
 118         snd_printdd(KERN_DEBUG "pdacf_attach called\n");
 119         /* find an empty slot from the card list */
 120         for (i = 0; i < SNDRV_CARDS; i++) {
 121                 if (! card_list[i])
 122                         break;
 123         }
 124         if (i >= SNDRV_CARDS) {
 125                 snd_printk(KERN_ERR "pdacf: too many cards found\n");
 126                 return NULL;
 127         }
 128         if (! enable[i])
 129                 return NULL; /* disabled explicitly */
 130
 131         /* ok, create a card instance */
 132         card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
 133         if (card == NULL) {
 134                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 135                 return NULL;
 136         }
 137
 138         pdacf = snd_pdacf_create(card);
 139         if (! pdacf)
 140                 return NULL;
 141
 142         if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
 143                 kfree(pdacf);
 144                 snd_card_free(card);
 145                 return NULL;
 146         }
 147
 148         pdacf->index = i;
 149         card_list[i] = card;
 150
 151         link = &pdacf->link;
 152         link->priv = pdacf;
 153
 154         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 155         link->io.NumPorts1 = 16;
 156
 157         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
 158         // link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
 159
 160         link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
 161         link->irq.Handler = pdacf_interrupt;
 162         link->irq.Instance = pdacf;
 163         link->conf.Attributes = CONF_ENABLE_IRQ;
 164         link->conf.IntType = INT_MEMORY_AND_IO;
 165         link->conf.ConfigIndex = 1;
 166         link->conf.Present = PRESENT_OPTION;
 167
 168         /* Chain drivers */
 169         link->next = dev_list;
 170         dev_list = link;
 171
 172         /* Register with Card Services */
 173         client_reg.dev_info = &dev_info;
 174         client_reg.EventMask =
 175                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL
 176 #ifdef CONFIG_PM
 177                 | CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET
 178                 | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME
 179 #endif
 180                 ;
 181         client_reg.event_handler = &pdacf_event;
 182         client_reg.Version = 0x0210;
 183         client_reg.event_callback_args.client_data = link;
 184
 185         ret = pcmcia_register_client(&link->handle, &client_reg);
 186         if (ret != CS_SUCCESS) {
 187                 cs_error(link->handle, RegisterClient, ret);
 188                 snd_pdacf_detach(link);
 189                 return NULL;
 190         }
 191
 192         return link;
 193 }
 194
 195
 196 /**
 197  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 198  * @port: i/o port for the card
 199  * @irq: irq number for the card
 200  *
 201  * this function assigns the specified port and irq, boot the card,
 202  * create pcm and control instances, and initialize the rest hardware.
 203  *
 204  * returns 0 if successful, or a negative error code.
 205  */
 206 static int snd_pdacf_assign_resources(pdacf_t *pdacf, int port, int irq)
 207 {
 208         int err;
 209         snd_card_t *card = pdacf->card;
 210
 211         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 212         pdacf->port = port;
 213         pdacf->irq = irq;
 214         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 215
 216         err = snd_pdacf_ak4117_create(pdacf);
 217         if (err < 0)
 218                 return err;
 219
 220         strcpy(card->driver, "PDAudio-CF");
 221         sprintf(card->shortname, "Core Sound %s", card->driver);
 222         sprintf(card->longname, "%s at 0x%x, irq %i",
 223                 card->shortname, port, irq);
 224
 225         err = snd_pdacf_pcm_new(pdacf);
 226         if (err < 0)
 227                 return err;
 228
 229         snd_card_set_pm_callback(card, snd_pdacf_suspend, snd_pdacf_resume, pdacf);
 230
 231         if ((err = snd_card_register(card)) < 0)
 232                 return err;
 233
 234         return 0;
 235 }
 236
 237
 238 /*
 239  * snd_pdacf_detach - detach callback for cs
 240  */
 241 static void snd_pdacf_detach(dev_link_t *link)
 242 {
 243         pdacf_t *chip = link->priv;
 244
 245         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 246         /* Remove the interface data from the linked list */
 247         {
 248                 dev_link_t **linkp;
 249                 /* Locate device structure */
 250                 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 251                         if (*linkp == link)
 252                                 break;
 253                 if (*linkp)
 254                         *linkp = link->next;
 255         }
 256         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 257                 snd_pdacf_powerdown(chip);
 258         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 259         snd_card_disconnect(chip->card);
 260         snd_card_free_in_thread(chip->card);
 261 }
 262
 263 /*
 264  * configuration callback
 265  */
 266
 267 #define CS_CHECK(fn, ret) \
 268 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 269
 270 static void pdacf_config(dev_link_t *link)
 271 {
 272         client_handle_t handle = link->handle;
 273         pdacf_t *pdacf = link->priv;
 274         tuple_t tuple;
 275         cisparse_t *parse = NULL;
 276         config_info_t conf;
 277         u_short buf[32];
 278         int last_fn, last_ret;
 279
 280         snd_printdd(KERN_DEBUG "pdacf_config called\n");
 281         parse = kmalloc(sizeof(*parse), GFP_KERNEL);
 282         if (! parse) {
 283                 snd_printk(KERN_ERR "pdacf_config: cannot allocate\n");
 284                 return;
 285         }
 286         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 287         tuple.Attributes = 0;
 288         tuple.TupleData = (cisdata_t *)buf;
 289         tuple.TupleDataMax = sizeof(buf);
 290         tuple.TupleOffset = 0;
 291         tuple.DesiredTuple = CISTPL_CONFIG;
 292         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 293         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 294         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, parse));
 295         link->conf.ConfigBase = parse->config.base;
 296         link->conf.ConfigIndex = 0x5;
 297         kfree(parse);
 298
 299         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
 300         link->conf.Vcc = conf.Vcc;
 301
 302         /* Configure card */
 303         link->state |= DEV_CONFIG;
 304
 305         CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
 306         CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
 307         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
 308
 309         if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
 310                 goto failed;
 311
 312         link->dev = &pdacf->node;
 313         link->state &= ~DEV_CONFIG_PENDING;
 314         return;
 315
 316 cs_failed:
 317         cs_error(link->handle, last_fn, last_ret);
 318 failed:
 319         pcmcia_release_configuration(link->handle);
 320         pcmcia_release_io(link->handle, &link->io);
 321         pcmcia_release_irq(link->handle, &link->irq);
 322 }
 323
 324 /*
 325  * event callback
 326  */
 327 static int pdacf_event(event_t event, int priority, event_callback_args_t *args)
 328 {
 329         dev_link_t *link = args->client_data;
 330         pdacf_t *chip = link->priv;
 331
 332         switch (event) {
 333         case CS_EVENT_CARD_REMOVAL:
 334                 snd_printdd(KERN_DEBUG "CARD_REMOVAL..\n");
 335                 link->state &= ~DEV_PRESENT;
 336                 if (link->state & DEV_CONFIG) {
 337                         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE;
 338                 }
 339                 break;
 340         case CS_EVENT_CARD_INSERTION:
 341                 snd_printdd(KERN_DEBUG "CARD_INSERTION..\n");
 342                 link->state |= DEV_PRESENT;
 343                 pdacf_config(link);
 344                 break;
 345 #ifdef CONFIG_PM
 346         case CS_EVENT_PM_SUSPEND:
 347                 snd_printdd(KERN_DEBUG "SUSPEND\n");
 348                 link->state |= DEV_SUSPEND;
 349                 if (chip) {
 350                         snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 351                         snd_pdacf_suspend(chip->card, PMSG_SUSPEND);
 352                 }
 353                 /* Fall through... */
 354         case CS_EVENT_RESET_PHYSICAL:
 355                 snd_printdd(KERN_DEBUG "RESET_PHYSICAL\n");
 356                 if (link->state & DEV_CONFIG)
 357                         pcmcia_release_configuration(link->handle);
 358                 break;
 359         case CS_EVENT_PM_RESUME:
 360                 snd_printdd(KERN_DEBUG "RESUME\n");
 361                 link->state &= ~DEV_SUSPEND;
 362                 /* Fall through... */
 363         case CS_EVENT_CARD_RESET:
 364                 snd_printdd(KERN_DEBUG "CARD_RESET\n");
 365                 if (DEV_OK(link)) {
 366                         snd_printdd(KERN_DEBUG "requestconfig...\n");
 367                         pcmcia_request_configuration(link->handle, &link->conf);
 368                         if (chip) {
 369                                 snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 370                                 snd_pdacf_resume(chip->card);
 371                         }
 372                 }
 373                 snd_printdd(KERN_DEBUG "resume done!\n");
 374                 break;
 375 #endif
 376         }
 377         return 0;
 378 }
 379
 380 /*
 381  * Module entry points
 382  */
 383 static struct pcmcia_driver pdacf_cs_driver = {
 384         .owner          = THIS_MODULE,
 385         .drv            = {
 386                 .name   = "snd-pdaudiocf",
 387         },
 388         .attach         = snd_pdacf_attach,
 389         .detach         = snd_pdacf_detach
 390 };
 391
 392 static int __init init_pdacf(void)
 393 {
 394         return pcmcia_register_driver(&pdacf_cs_driver);
 395 }
 396
 397 static void __exit exit_pdacf(void)
 398 {
 399         pcmcia_unregister_driver(&pdacf_cs_driver);
 400         BUG_ON(dev_list != NULL);
 401 }
 402
 403 module_init(init_pdacf);
 404 module_exit(exit_pdacf);