sound/pcmcia/pdaudiocf/pdaudiocf.c

   1 /*
   2  * Driver for Sound Core PDAudioCF soundcard
   3  *
   4  * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.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/core.h>
  22 #include <linux/slab.h>
  23 #include <linux/module.h>
  24 #include <pcmcia/ciscode.h>
  25 #include <pcmcia/cisreg.h>
  26 #include "pdaudiocf.h"
  27 #include <sound/initval.h>
  28 #include <linux/init.h>
  29
  30 /*
  31  */
  32
  33 #define CARD_NAME       "PDAudio-CF"
  34
  35 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  36 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
  37 MODULE_LICENSE("GPL");
  38 MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
  39
  40 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  41 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  42 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable switches */
  43
  44 module_param_array(index, int, NULL, 0444);
  45 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  46 module_param_array(id, charp, NULL, 0444);
  47 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  48 module_param_array(enable, bool, NULL, 0444);
  49 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  50
  51 /*
  52  */
  53
  54 static struct snd_card *card_list[SNDRV_CARDS];
  55
  56 /*
  57  * prototypes
  58  */
  59 static int pdacf_config(struct pcmcia_device *link);
  60 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
  61
  62 static void pdacf_release(struct pcmcia_device *link)
  63 {
  64         free_irq(link->irq, link->priv);
  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, err;
  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         err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
 117                            0, &card);
 118         if (err < 0) {
 119                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 120                 return err;
 121         }
 122
 123         pdacf = snd_pdacf_create(card);
 124         if (!pdacf) {
 125                 snd_card_free(card);
 126                 return -ENOMEM;
 127         }
 128
 129         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
 130         if (err < 0) {
 131                 kfree(pdacf);
 132                 snd_card_free(card);
 133                 return err;
 134         }
 135
 136         pdacf->index = i;
 137         card_list[i] = card;
 138
 139         pdacf->p_dev = link;
 140         link->priv = pdacf;
 141
 142         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 143         link->resource[0]->end = 16;
 144
 145         link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 146         link->config_index = 1;
 147         link->config_regs = PRESENT_OPTION;
 148
 149         return pdacf_config(link);
 150 }
 151
 152
 153 /**
 154  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 155  * @port: i/o port for the card
 156  * @irq: irq number for the card
 157  *
 158  * this function assigns the specified port and irq, boot the card,
 159  * create pcm and control instances, and initialize the rest hardware.
 160  *
 161  * returns 0 if successful, or a negative error code.
 162  */
 163 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
 164 {
 165         int err;
 166         struct snd_card *card = pdacf->card;
 167
 168         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 169         pdacf->port = port;
 170         pdacf->irq = irq;
 171         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 172
 173         err = snd_pdacf_ak4117_create(pdacf);
 174         if (err < 0)
 175                 return err;
 176
 177         strcpy(card->driver, "PDAudio-CF");
 178         sprintf(card->shortname, "Core Sound %s", card->driver);
 179         sprintf(card->longname, "%s at 0x%x, irq %i",
 180                 card->shortname, port, irq);
 181
 182         err = snd_pdacf_pcm_new(pdacf);
 183         if (err < 0)
 184                 return err;
 185
 186         if ((err = snd_card_register(card)) < 0)
 187                 return err;
 188
 189         return 0;
 190 }
 191
 192
 193 /*
 194  * snd_pdacf_detach - detach callback for cs
 195  */
 196 static void snd_pdacf_detach(struct pcmcia_device *link)
 197 {
 198         struct snd_pdacf *chip = link->priv;
 199
 200         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 201
 202         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 203                 snd_pdacf_powerdown(chip);
 204         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 205         snd_card_disconnect(chip->card);
 206         snd_card_free_when_closed(chip->card);
 207 }
 208
 209 /*
 210  * configuration callback
 211  */
 212
 213 static int pdacf_config(struct pcmcia_device *link)
 214 {
 215         struct snd_pdacf *pdacf = link->priv;
 216         int ret;
 217
 218         snd_printdd(KERN_DEBUG "pdacf_config called\n");
 219         link->config_index = 0x5;
 220         link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 221
 222         ret = pcmcia_request_io(link);
 223         if (ret)
 224                 goto failed_preirq;
 225
 226         ret = request_threaded_irq(link->irq, pdacf_interrupt,
 227                                    pdacf_threaded_irq,
 228                                    IRQF_SHARED, link->devname, link->priv);
 229         if (ret)
 230                 goto failed_preirq;
 231
 232         ret = pcmcia_enable_device(link);
 233         if (ret)
 234                 goto failed;
 235
 236         if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
 237                                         link->irq) < 0)
 238                 goto failed;
 239
 240         return 0;
 241
 242  failed:
 243         free_irq(link->irq, link->priv);
 244 failed_preirq:
 245         pcmcia_disable_device(link);
 246         return -ENODEV;
 247 }
 248
 249 #ifdef CONFIG_PM
 250
 251 static int pdacf_suspend(struct pcmcia_device *link)
 252 {
 253         struct snd_pdacf *chip = link->priv;
 254
 255         snd_printdd(KERN_DEBUG "SUSPEND\n");
 256         if (chip) {
 257                 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 258                 snd_pdacf_suspend(chip);
 259         }
 260
 261         return 0;
 262 }
 263
 264 static int pdacf_resume(struct pcmcia_device *link)
 265 {
 266         struct snd_pdacf *chip = link->priv;
 267
 268         snd_printdd(KERN_DEBUG "RESUME\n");
 269         if (pcmcia_dev_present(link)) {
 270                 if (chip) {
 271                         snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 272                         snd_pdacf_resume(chip);
 273                 }
 274         }
 275         snd_printdd(KERN_DEBUG "resume done!\n");
 276
 277         return 0;
 278 }
 279
 280 #endif
 281
 282 /*
 283  * Module entry points
 284  */
 285 static const struct pcmcia_device_id snd_pdacf_ids[] = {
 286         /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
 287         PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
 288         PCMCIA_DEVICE_NULL
 289 };
 290 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 291
 292 static struct pcmcia_driver pdacf_cs_driver = {
 293         .owner          = THIS_MODULE,
 294         .name           = "snd-pdaudiocf",
 295         .probe          = snd_pdacf_probe,
 296         .remove         = snd_pdacf_detach,
 297         .id_table       = snd_pdacf_ids,
 298 #ifdef CONFIG_PM
 299         .suspend        = pdacf_suspend,
 300         .resume         = pdacf_resume,
 301 #endif
 302 };
 303 module_pcmcia_driver(pdacf_cs_driver);