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 release_and_free_resource(acard->fm_res); 82 } 83 84 static int __init snd_sb8_probe(int dev) 85 { 86 sb_t *chip; 87 snd_card_t *card; 88 struct snd_sb8 *acard; 89 opl3_t *opl3; 90 int err; 91 92 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 93 sizeof(struct snd_sb8)); 94 if (card == NULL) 95 return -ENOMEM; 96 acard = (struct snd_sb8 *)card->private_data; 97 card->private_free = snd_sb8_free; 98 99 /* block the 0x388 port to avoid PnP conflicts */ 100 acard->fm_res = request_region(0x388, 4, "SoundBlaster FM"); 101 102 if ((err = snd_sbdsp_create(card, port[dev], irq[dev], 103 snd_sb8_interrupt, 104 dma8[dev], 105 -1, 106 SB_HW_AUTO, 107 &chip)) < 0) 108 goto _err; 109 110 if (chip->hardware >= SB_HW_16) { 111 if (chip->hardware == SB_HW_ALS100) 112 snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n", 113 port[dev]); 114 else 115 snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n", 116 port[dev]); 117 err = -ENODEV; 118 goto _err; 119 } 120 121 if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0) 122 goto _err; 123 124 if ((err = snd_sbmixer_new(chip)) < 0) 125 goto _err; 126 127 if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) { 128 if ((err = snd_opl3_create(card, chip->port + 8, 0, 129 OPL3_HW_AUTO, 1, 130 &opl3)) < 0) { 131 snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8); 132 } 133 } else { 134 if ((err = snd_opl3_create(card, chip->port, chip->port + 2, 135 OPL3_HW_AUTO, 1, 136 &opl3)) < 0) { 137 snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n", 138 chip->port, chip->port + 2); 139 } 140 } 141 if (err >= 0) { 142 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) 143 goto _err; 144 } 145 146 if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0) 147 goto _err; 148 149 strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8"); 150 strcpy(card->shortname, chip->name); 151 sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d", 152 chip->name, 153 chip->port, 154 irq[dev], dma8[dev]); 155 156 if ((err = snd_card_set_generic_dev(card)) < 0) 157 goto _err; 158 159 if ((err = snd_card_register(card)) < 0) 160 goto _err; 161 162 snd_sb8_cards[dev] = card; 163 return 0; 164 165 _err: 166 snd_card_free(card); 167 return err; 168 } 169 170 static int __init snd_card_sb8_legacy_auto_probe(unsigned long xport) 171 { 172 static int dev; 173 int res; 174 175 for ( ; dev < SNDRV_CARDS; dev++) { 176 if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT) 177 continue; 178 port[dev] = xport; 179 res = snd_sb8_probe(dev); 180 if (res < 0) 181 port[dev] = SNDRV_AUTO_PORT; 182 return res; 183 } 184 return -ENODEV; 185 } 186 187 static int __init alsa_card_sb8_init(void) 188 { 189 static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1}; 190 int dev, cards, i; 191 192 for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) { 193 if (port[dev] == SNDRV_AUTO_PORT) 194 continue; 195 if (snd_sb8_probe(dev) >= 0) 196 cards++; 197 } 198 i = snd_legacy_auto_probe(possible_ports, snd_card_sb8_legacy_auto_probe); 199 if (i > 0) 200 cards += i; 201 202 if (!cards) { 203 #ifdef MODULE 204 snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n"); 205 #endif 206 return -ENODEV; 207 } 208 return 0; 209 } 210 211 static void __exit alsa_card_sb8_exit(void) 212 { 213 int idx; 214 215 for (idx = 0; idx < SNDRV_CARDS; idx++) 216 snd_card_free(snd_sb8_cards[idx]); 217 } 218 219 module_init(alsa_card_sb8_init) 220 module_exit(alsa_card_sb8_exit) 221