LXR linux/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
  35MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  36MODULE_DESCRIPTION("Sound Core " CARD_NAME);
  37MODULE_LICENSE("GPL");
  38MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
  39
  40static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  41static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  42static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable switches */
  43
  44module_param_array(index, int, NULL, 0444);
  45MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  46module_param_array(id, charp, NULL, 0444);
  47MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  48module_param_array(enable, bool, NULL, 0444);
  49MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  50
  51/*
  52 */
  53
  54static struct snd_card *card_list[SNDRV_CARDS];
  55
  56/*
  57 * prototypes
  58 */
  59static int pdacf_config(struct pcmcia_device *link);
  60static void snd_pdacf_detach(struct pcmcia_device *p_dev);
  61
  62static 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 */
  71static 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
  84static 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 */
  93static 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 */
 163static 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 */
 196static 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
 213static 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);
 244failed_preirq:
 245        pcmcia_disable_device(link);
 246        return -ENODEV;
 247}
 248
 249#ifdef CONFIG_PM
 250
 251static 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
 264static 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 */
 285static 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};
 290MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 291
 292static 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};
 303module_pcmcia_driver(pdacf_cs_driver);
 304