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         pcmcia_disable_device(link);
  65 }
  66
  67 /*
  68  * destructor
  69  */
  70 static int snd_pdacf_free(struct snd_pdacf *pdacf)
  71 {
  72         struct pcmcia_device *link = pdacf->p_dev;
  73
  74         pdacf_release(link);
  75
  76         card_list[pdacf->index] = NULL;
  77         pdacf->card = NULL;
  78
  79         kfree(pdacf);
  80         return 0;
  81 }
  82
  83 static int snd_pdacf_dev_free(struct snd_device *device)
  84 {
  85         struct snd_pdacf *chip = device->device_data;
  86         return snd_pdacf_free(chip);
  87 }
  88
  89 /*
  90  * snd_pdacf_attach - attach callback for cs
  91  */
  92 static int snd_pdacf_probe(struct pcmcia_device *link)
  93 {
  94         int i, err;
  95         struct snd_pdacf *pdacf;
  96         struct snd_card *card;
  97         static struct snd_device_ops ops = {
  98                 .dev_free =     snd_pdacf_dev_free,
  99         };
 100
 101         snd_printdd(KERN_DEBUG "pdacf_attach called\n");
 102         /* find an empty slot from the card list */
 103         for (i = 0; i < SNDRV_CARDS; i++) {
 104                 if (! card_list[i])
 105                         break;
 106         }
 107         if (i >= SNDRV_CARDS) {
 108                 snd_printk(KERN_ERR "pdacf: too many cards found\n");
 109                 return -EINVAL;
 110         }
 111         if (! enable[i])
 112                 return -ENODEV; /* disabled explicitly */
 113
 114         /* ok, create a card instance */
 115         err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
 116                            0, &card);
 117         if (err < 0) {
 118                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 119                 return err;
 120         }
 121
 122         pdacf = snd_pdacf_create(card);
 123         if (!pdacf) {
 124                 snd_card_free(card);
 125                 return -ENOMEM;
 126         }
 127
 128         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
 129         if (err < 0) {
 130                 kfree(pdacf);
 131                 snd_card_free(card);
 132                 return err;
 133         }
 134
 135         pdacf->index = i;
 136         card_list[i] = card;
 137
 138         pdacf->p_dev = link;
 139         link->priv = pdacf;
 140
 141         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 142         link->resource[0]->end = 16;
 143
 144         link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 145         link->config_index = 1;
 146         link->config_regs = PRESENT_OPTION;
 147
 148         return pdacf_config(link);
 149 }
 150
 151
 152 /**
 153  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 154  * @port: i/o port for the card
 155  * @irq: irq number for the card
 156  *
 157  * this function assigns the specified port and irq, boot the card,
 158  * create pcm and control instances, and initialize the rest hardware.
 159  *
 160  * returns 0 if successful, or a negative error code.
 161  */
 162 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
 163 {
 164         int err;
 165         struct snd_card *card = pdacf->card;
 166
 167         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 168         pdacf->port = port;
 169         pdacf->irq = irq;
 170         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 171
 172         err = snd_pdacf_ak4117_create(pdacf);
 173         if (err < 0)
 174                 return err;
 175
 176         strcpy(card->driver, "PDAudio-CF");
 177         sprintf(card->shortname, "Core Sound %s", card->driver);
 178         sprintf(card->longname, "%s at 0x%x, irq %i",
 179                 card->shortname, port, irq);
 180
 181         err = snd_pdacf_pcm_new(pdacf);
 182         if (err < 0)
 183                 return err;
 184
 185         if ((err = snd_card_register(card)) < 0)
 186                 return err;
 187
 188         return 0;
 189 }
 190
 191
 192 /*
 193  * snd_pdacf_detach - detach callback for cs
 194  */
 195 static void snd_pdacf_detach(struct pcmcia_device *link)
 196 {
 197         struct snd_pdacf *chip = link->priv;
 198
 199         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 200
 201         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 202                 snd_pdacf_powerdown(chip);
 203         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 204         snd_card_disconnect(chip->card);
 205         snd_card_free_when_closed(chip->card);
 206 }
 207
 208 /*
 209  * configuration callback
 210  */
 211
 212 static int pdacf_config(struct pcmcia_device *link)
 213 {
 214         struct snd_pdacf *pdacf = link->priv;
 215         int ret;
 216
 217         snd_printdd(KERN_DEBUG "pdacf_config called\n");
 218         link->config_index = 0x5;
 219         link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 220
 221         ret = pcmcia_request_io(link);
 222         if (ret)
 223                 goto failed;
 224
 225         ret = pcmcia_request_irq(link, pdacf_interrupt);
 226         if (ret)
 227                 goto failed;
 228
 229         ret = pcmcia_enable_device(link);
 230         if (ret)
 231                 goto failed;
 232
 233         if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
 234                                         link->irq) < 0)
 235                 goto failed;
 236
 237         return 0;
 238
 239 failed:
 240         pcmcia_disable_device(link);
 241         return -ENODEV;
 242 }
 243
 244 #ifdef CONFIG_PM
 245
 246 static int pdacf_suspend(struct pcmcia_device *link)
 247 {
 248         struct snd_pdacf *chip = link->priv;
 249
 250         snd_printdd(KERN_DEBUG "SUSPEND\n");
 251         if (chip) {
 252                 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 253                 snd_pdacf_suspend(chip);
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int pdacf_resume(struct pcmcia_device *link)
 260 {
 261         struct snd_pdacf *chip = link->priv;
 262
 263         snd_printdd(KERN_DEBUG "RESUME\n");
 264         if (pcmcia_dev_present(link)) {
 265                 if (chip) {
 266                         snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 267                         snd_pdacf_resume(chip);
 268                 }
 269         }
 270         snd_printdd(KERN_DEBUG "resume done!\n");
 271
 272         return 0;
 273 }
 274
 275 #endif
 276
 277 /*
 278  * Module entry points
 279  */
 280 static const struct pcmcia_device_id snd_pdacf_ids[] = {
 281         /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
 282         PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
 283         PCMCIA_DEVICE_NULL
 284 };
 285 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 286
 287 static struct pcmcia_driver pdacf_cs_driver = {
 288         .owner          = THIS_MODULE,
 289         .name           = "snd-pdaudiocf",
 290         .probe          = snd_pdacf_probe,
 291         .remove         = snd_pdacf_detach,
 292         .id_table       = snd_pdacf_ids,
 293 #ifdef CONFIG_PM
 294         .suspend        = pdacf_suspend,
 295         .resume         = pdacf_resume,
 296 #endif
 297 };
 298 module_pcmcia_driver(pdacf_cs_driver);