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