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 int pdacf_config(struct pcmcia_device *link);
  61 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
  62
  63 static void pdacf_release(struct pcmcia_device *link)
  64 {
  65         pcmcia_disable_device(link);
  66 }
  67
  68 /*
  69  * destructor
  70  */
  71 static int snd_pdacf_free(struct snd_pdacf *pdacf)
  72 {
  73         struct pcmcia_device *link = pdacf->p_dev;
  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_probe(struct pcmcia_device *link)
  94 {
  95         int i;
  96         struct snd_pdacf *pdacf;
  97         struct snd_card *card;
  98         static struct snd_device_ops ops = {
  99                 .dev_free =     snd_pdacf_dev_free,
 100         };
 101
 102         snd_printdd(KERN_DEBUG "pdacf_attach called\n");
 103         /* find an empty slot from the card list */
 104         for (i = 0; i < SNDRV_CARDS; i++) {
 105                 if (! card_list[i])
 106                         break;
 107         }
 108         if (i >= SNDRV_CARDS) {
 109                 snd_printk(KERN_ERR "pdacf: too many cards found\n");
 110                 return -EINVAL;
 111         }
 112         if (! enable[i])
 113                 return -ENODEV; /* disabled explicitly */
 114
 115         /* ok, create a card instance */
 116         card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
 117         if (card == NULL) {
 118                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 119                 return -ENOMEM;
 120         }
 121
 122         pdacf = snd_pdacf_create(card);
 123         if (! pdacf)
 124                 return -EIO;
 125
 126         if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
 127                 kfree(pdacf);
 128                 snd_card_free(card);
 129                 return -ENODEV;
 130         }
 131
 132         pdacf->index = i;
 133         card_list[i] = card;
 134
 135         pdacf->p_dev = link;
 136         link->priv = pdacf;
 137
 138         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 139         link->io.NumPorts1 = 16;
 140
 141         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
 142         // link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
 143
 144         link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
 145         link->irq.Handler = pdacf_interrupt;
 146         link->irq.Instance = pdacf;
 147         link->conf.Attributes = CONF_ENABLE_IRQ;
 148         link->conf.IntType = INT_MEMORY_AND_IO;
 149         link->conf.ConfigIndex = 1;
 150         link->conf.Present = PRESENT_OPTION;
 151
 152         return pdacf_config(link);
 153 }
 154
 155
 156 /**
 157  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 158  * @port: i/o port for the card
 159  * @irq: irq number for the card
 160  *
 161  * this function assigns the specified port and irq, boot the card,
 162  * create pcm and control instances, and initialize the rest hardware.
 163  *
 164  * returns 0 if successful, or a negative error code.
 165  */
 166 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
 167 {
 168         int err;
 169         struct snd_card *card = pdacf->card;
 170
 171         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 172         pdacf->port = port;
 173         pdacf->irq = irq;
 174         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 175
 176         err = snd_pdacf_ak4117_create(pdacf);
 177         if (err < 0)
 178                 return err;
 179
 180         strcpy(card->driver, "PDAudio-CF");
 181         sprintf(card->shortname, "Core Sound %s", card->driver);
 182         sprintf(card->longname, "%s at 0x%x, irq %i",
 183                 card->shortname, port, irq);
 184
 185         err = snd_pdacf_pcm_new(pdacf);
 186         if (err < 0)
 187                 return err;
 188
 189         if ((err = snd_card_register(card)) < 0)
 190                 return err;
 191
 192         return 0;
 193 }
 194
 195
 196 /*
 197  * snd_pdacf_detach - detach callback for cs
 198  */
 199 static void snd_pdacf_detach(struct pcmcia_device *link)
 200 {
 201         struct snd_pdacf *chip = link->priv;
 202
 203         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 204
 205         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 206                 snd_pdacf_powerdown(chip);
 207         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 208         snd_card_disconnect(chip->card);
 209         snd_card_free_in_thread(chip->card);
 210 }
 211
 212 /*
 213  * configuration callback
 214  */
 215
 216 #define CS_CHECK(fn, ret) \
 217 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 218
 219 static int pdacf_config(struct pcmcia_device *link)
 220 {
 221         struct snd_pdacf *pdacf = link->priv;
 222         tuple_t tuple;
 223         cisparse_t *parse = NULL;
 224         u_short buf[32];
 225         int last_fn, last_ret;
 226
 227         snd_printdd(KERN_DEBUG "pdacf_config called\n");
 228         parse = kmalloc(sizeof(*parse), GFP_KERNEL);
 229         if (! parse) {
 230                 snd_printk(KERN_ERR "pdacf_config: cannot allocate\n");
 231                 return -ENOMEM;
 232         }
 233         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 234         tuple.Attributes = 0;
 235         tuple.TupleData = (cisdata_t *)buf;
 236         tuple.TupleDataMax = sizeof(buf);
 237         tuple.TupleOffset = 0;
 238         tuple.DesiredTuple = CISTPL_CONFIG;
 239         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
 240         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
 241         CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, parse));
 242         link->conf.ConfigBase = parse->config.base;
 243         link->conf.ConfigIndex = 0x5;
 244         kfree(parse);
 245
 246         CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
 247         CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
 248         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
 249
 250         if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
 251                 goto failed;
 252
 253         link->dev_node = &pdacf->node;
 254         return 0;
 255
 256 cs_failed:
 257         cs_error(link, last_fn, last_ret);
 258 failed:
 259         pcmcia_disable_device(link);
 260         return -ENODEV;
 261 }
 262
 263 #ifdef CONFIG_PM
 264
 265 static int pdacf_suspend(struct pcmcia_device *link)
 266 {
 267         struct snd_pdacf *chip = link->priv;
 268
 269         snd_printdd(KERN_DEBUG "SUSPEND\n");
 270         if (chip) {
 271                 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 272                 snd_pdacf_suspend(chip, PMSG_SUSPEND);
 273         }
 274
 275         return 0;
 276 }
 277
 278 static int pdacf_resume(struct pcmcia_device *link)
 279 {
 280         struct snd_pdacf *chip = link->priv;
 281
 282         snd_printdd(KERN_DEBUG "RESUME\n");
 283         if (DEV_OK(link)) {
 284                 if (chip) {
 285                         snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 286                         snd_pdacf_resume(chip);
 287                 }
 288         }
 289         snd_printdd(KERN_DEBUG "resume done!\n");
 290
 291         return 0;
 292 }
 293
 294 #endif
 295
 296 /*
 297  * Module entry points
 298  */
 299 static struct pcmcia_device_id snd_pdacf_ids[] = {
 300         PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45),
 301         PCMCIA_DEVICE_NULL
 302 };
 303 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 304
 305 static struct pcmcia_driver pdacf_cs_driver = {
 306         .owner          = THIS_MODULE,
 307         .drv            = {
 308                 .name   = "snd-pdaudiocf",
 309         },
 310         .probe          = snd_pdacf_probe,
 311         .remove         = snd_pdacf_detach,
 312         .id_table       = snd_pdacf_ids,
 313 #ifdef CONFIG_PM
 314         .suspend        = pdacf_suspend,
 315         .resume         = pdacf_resume,
 316 #endif
 317
 318 };
 319
 320 static int __init init_pdacf(void)
 321 {
 322         return pcmcia_register_driver(&pdacf_cs_driver);
 323 }
 324
 325 static void __exit exit_pdacf(void)
 326 {
 327         pcmcia_unregister_driver(&pdacf_cs_driver);
 328 }
 329
 330 module_init(init_pdacf);
 331 module_exit(exit_pdacf);