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