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) 224