sound/isa/sb/sb8.c

   1 /*
   2  *  Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *
   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
  22 #include <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/ioport.h>
  26 #include <linux/moduleparam.h>
  27 #include <sound/core.h>
  28 #include <sound/sb.h>
  29 #include <sound/opl3.h>
  30 #define SNDRV_LEGACY_AUTO_PROBE
  31 #include <sound/initval.h>
  32
  33 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  34 MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
  35 MODULE_LICENSE("GPL");
  36 MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
  37
  38 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  39 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  40 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  41 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x240,0x260 */
  42 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,10 */
  43 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3 */
  44
  45 module_param_array(index, int, NULL, 0444);
  46 MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
  47 module_param_array(id, charp, NULL, 0444);
  48 MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
  49 module_param_array(enable, bool, NULL, 0444);
  50 MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
  51 module_param_array(port, long, NULL, 0444);
  52 MODULE_PARM_DESC(port, "Port # for SB8 driver.");
  53 module_param_array(irq, int, NULL, 0444);
  54 MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
  55 module_param_array(dma8, int, NULL, 0444);
  56 MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
  57
  58 struct snd_sb8 {
  59         struct resource *fm_res;        /* used to block FM i/o region for legacy cards */
  60 };
  61
  62 static snd_card_t *snd_sb8_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
  63
  64 static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
  65 {
  66         sb_t *chip = dev_id;
  67
  68         if (chip->open & SB_OPEN_PCM) {
  69                 return snd_sb8dsp_interrupt(chip);
  70         } else {
  71                 return snd_sb8dsp_midi_interrupt(chip);
  72         }
  73 }
  74
  75 static void snd_sb8_free(snd_card_t *card)
  76 {
  77         struct snd_sb8 *acard = (struct snd_sb8 *)card->private_data;
  78
  79         if (acard == NULL)
  80                 return;
  81         if (acard->fm_res) {
  82                 release_resource(acard->fm_res);
  83                 kfree_nocheck(acard->fm_res);
  84         }
  85 }
  86
  87 static int __init snd_sb8_probe(int dev)
  88 {
  89         sb_t *chip;
  90         snd_card_t *card;
  91         struct snd_sb8 *acard;
  92         opl3_t *opl3;
  93         int err;
  94
  95         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
  96                             sizeof(struct snd_sb8));
  97         if (card == NULL)
  98                 return -ENOMEM;
  99         acard = (struct snd_sb8 *)card->private_data;
 100         card->private_free = snd_sb8_free;
 101
 102         /* block the 0x388 port to avoid PnP conflicts */
 103         acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
 104
 105         if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
 106                                     snd_sb8_interrupt,
 107                                     dma8[dev],
 108                                     -1,
 109                                     SB_HW_AUTO,
 110                                     &chip)) < 0) {
 111                 snd_card_free(card);
 112                 return err;
 113         }
 114         if (chip->hardware >= SB_HW_16) {
 115                 snd_card_free(card);
 116                 if (chip->hardware == SB_HW_ALS100)
 117                         snd_printdd("ALS100 chip detected at 0x%lx, try snd-als100 module\n",
 118                                     port[dev]);
 119                 else
 120                         snd_printdd("SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
 121                                     port[dev]);
 122                 return -ENODEV;
 123         }
 124
 125         if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0) {
 126                 snd_card_free(card);
 127                 return err;
 128         }
 129         if ((err = snd_sbmixer_new(chip)) < 0) {
 130                 snd_card_free(card);
 131                 return err;
 132         }
 133         if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
 134                 if ((err = snd_opl3_create(card, chip->port + 8, 0,
 135                                            OPL3_HW_AUTO, 1,
 136                                            &opl3)) < 0) {
 137                         snd_printk(KERN_ERR "sb8: no OPL device at 0x%lx\n", chip->port + 8);
 138                 }
 139         } else {
 140                 if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
 141                                            OPL3_HW_AUTO, 1,
 142                                            &opl3)) < 0) {
 143                         snd_printk(KERN_ERR "sb8: no OPL device at 0x%lx-0x%lx\n",
 144                                    chip->port, chip->port + 2);
 145                 }
 146         }
 147         if (err >= 0) {
 148                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 149                         snd_card_free(card);
 150                         return err;
 151                 }
 152         }
 153
 154         if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0) {
 155                 snd_card_free(card);
 156                 return err;
 157         }
 158
 159         strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
 160         strcpy(card->shortname, chip->name);
 161         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 162                 chip->name,
 163                 chip->port,
 164                 irq[dev], dma8[dev]);
 165         if ((err = snd_card_register(card)) < 0) {
 166                 snd_card_free(card);
 167                 return err;
 168         }
 169         snd_sb8_cards[dev] = card;
 170         return 0;
 171 }
 172
 173 static int __init snd_card_sb8_legacy_auto_probe(unsigned long xport)
 174 {
 175         static int dev;
 176         int res;
 177
 178         for ( ; dev < SNDRV_CARDS; dev++) {
 179                 if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
 180                         continue;
 181                 port[dev] = xport;
 182                 res = snd_sb8_probe(dev);
 183                 if (res < 0)
 184                         port[dev] = SNDRV_AUTO_PORT;
 185                 return res;
 186         }
 187         return -ENODEV;
 188 }
 189
 190 static int __init alsa_card_sb8_init(void)
 191 {
 192         static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
 193         int dev, cards, i;
 194
 195         for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
 196                 if (port[dev] == SNDRV_AUTO_PORT)
 197                         continue;
 198                 if (snd_sb8_probe(dev) >= 0)
 199                         cards++;
 200         }
 201         i = snd_legacy_auto_probe(possible_ports, snd_card_sb8_legacy_auto_probe);
 202         if (i > 0)
 203                 cards += i;
 204
 205         if (!cards) {
 206 #ifdef MODULE
 207                 snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
 208 #endif
 209                 return -ENODEV;
 210         }
 211         return 0;
 212 }
 213
 214 static void __exit alsa_card_sb8_exit(void)
 215 {
 216         int idx;
 217
 218         for (idx = 0; idx < SNDRV_CARDS; idx++)
 219                 snd_card_free(snd_sb8_cards[idx]);
 220 }
 221
 222 module_init(alsa_card_sb8_init)
 223 module_exit(alsa_card_sb8_exit)