sb8.c revision 67be445871bb35c450100753b72392ad6ddc0245
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/err.h> 25#include <linux/platform_device.h> 26#include <linux/slab.h> 27#include <linux/ioport.h> 28#include <linux/moduleparam.h> 29#include <sound/core.h> 30#include <sound/sb.h> 31#include <sound/opl3.h> 32#include <sound/initval.h> 33 34MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); 35MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro"); 36MODULE_LICENSE("GPL"); 37MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}"); 38 39static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 40static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 41static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ 42static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240,0x260 */ 43static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */ 44static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3 */ 45 46module_param_array(index, int, NULL, 0444); 47MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard."); 48module_param_array(id, charp, NULL, 0444); 49MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard."); 50module_param_array(enable, bool, NULL, 0444); 51MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard."); 52module_param_array(port, long, NULL, 0444); 53MODULE_PARM_DESC(port, "Port # for SB8 driver."); 54module_param_array(irq, int, NULL, 0444); 55MODULE_PARM_DESC(irq, "IRQ # for SB8 driver."); 56module_param_array(dma8, int, NULL, 0444); 57MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver."); 58 59struct snd_sb8 { 60 struct resource *fm_res; /* used to block FM i/o region for legacy cards */ 61 struct snd_sb *chip; 62}; 63 64static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs) 65{ 66 struct snd_sb *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 75static void snd_sb8_free(struct snd_card *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 84static int __init snd_sb8_probe(struct platform_device *pdev) 85{ 86 int dev = pdev->id; 87 struct snd_sb *chip; 88 struct snd_card *card; 89 struct snd_sb8 *acard; 90 struct snd_opl3 *opl3; 91 int err; 92 93 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 94 sizeof(struct snd_sb8)); 95 if (card == NULL) 96 return -ENOMEM; 97 acard = card->private_data; 98 card->private_free = snd_sb8_free; 99 100 /* block the 0x388 port to avoid PnP conflicts */ 101 acard->fm_res = request_region(0x388, 4, "SoundBlaster FM"); 102 103 if (port[dev] != SNDRV_AUTO_PORT) { 104 if ((err = snd_sbdsp_create(card, port[dev], irq[dev], 105 snd_sb8_interrupt, 106 dma8[dev], 107 -1, 108 SB_HW_AUTO, 109 &chip)) < 0) 110 goto _err; 111 } else { 112 /* auto-probe legacy ports */ 113 static unsigned long possible_ports[] = { 114 0x220, 0x240, 0x260, 115 }; 116 int i; 117 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) { 118 err = snd_sbdsp_create(card, possible_ports[i], 119 irq[dev], 120 snd_sb8_interrupt, 121 dma8[dev], 122 -1, 123 SB_HW_AUTO, 124 &chip); 125 if (err >= 0) { 126 port[dev] = possible_ports[i]; 127 break; 128 } 129 } 130 if (i >= ARRAY_SIZE(possible_ports)) 131 goto _err; 132 } 133 acard->chip = chip; 134 135 if (chip->hardware >= SB_HW_16) { 136 if (chip->hardware == SB_HW_ALS100) 137 snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n", 138 port[dev]); 139 else 140 snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n", 141 port[dev]); 142 err = -ENODEV; 143 goto _err; 144 } 145 146 if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0) 147 goto _err; 148 149 if ((err = snd_sbmixer_new(chip)) < 0) 150 goto _err; 151 152 if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) { 153 if ((err = snd_opl3_create(card, chip->port + 8, 0, 154 OPL3_HW_AUTO, 1, 155 &opl3)) < 0) { 156 snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8); 157 } 158 } else { 159 if ((err = snd_opl3_create(card, chip->port, chip->port + 2, 160 OPL3_HW_AUTO, 1, 161 &opl3)) < 0) { 162 snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n", 163 chip->port, chip->port + 2); 164 } 165 } 166 if (err >= 0) { 167 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) 168 goto _err; 169 } 170 171 if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0) 172 goto _err; 173 174 strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8"); 175 strcpy(card->shortname, chip->name); 176 sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d", 177 chip->name, 178 chip->port, 179 irq[dev], dma8[dev]); 180 181 snd_card_set_dev(card, &pdev->dev); 182 183 if ((err = snd_card_register(card)) < 0) 184 goto _err; 185 186 platform_set_drvdata(pdev, card); 187 return 0; 188 189 _err: 190 snd_card_free(card); 191 return err; 192} 193 194static int snd_sb8_remove(struct platform_device *pdev) 195{ 196 snd_card_free(platform_get_drvdata(pdev)); 197 platform_set_drvdata(pdev, NULL); 198 return 0; 199} 200 201#ifdef CONFIG_PM 202static int snd_sb8_suspend(struct platform_device *dev, pm_message_t state) 203{ 204 struct snd_card *card = platform_get_drvdata(dev); 205 struct snd_sb8 *acard = card->private_data; 206 struct snd_sb *chip = acard->chip; 207 208 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 209 snd_pcm_suspend_all(chip->pcm); 210 snd_sbmixer_suspend(chip); 211 return 0; 212} 213 214static int snd_sb8_resume(struct platform_device *dev) 215{ 216 struct snd_card *card = platform_get_drvdata(dev); 217 struct snd_sb8 *acard = card->private_data; 218 struct snd_sb *chip = acard->chip; 219 220 snd_sbdsp_reset(chip); 221 snd_sbmixer_resume(chip); 222 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 223 return 0; 224} 225#endif 226 227#define SND_SB8_DRIVER "snd_sb8" 228 229static struct platform_driver snd_sb8_driver = { 230 .probe = snd_sb8_probe, 231 .remove = snd_sb8_remove, 232#ifdef CONFIG_PM 233 .suspend = snd_sb8_suspend, 234 .resume = snd_sb8_resume, 235#endif 236 .driver = { 237 .name = SND_SB8_DRIVER 238 }, 239}; 240 241static int __init alsa_card_sb8_init(void) 242{ 243 int i, cards, err; 244 245 err = platform_driver_register(&snd_sb8_driver); 246 if (err < 0) 247 return err; 248 249 cards = 0; 250 for (i = 0; i < SNDRV_CARDS && enable[i]; i++) { 251 struct platform_device *device; 252 device = platform_device_register_simple(SND_SB8_DRIVER, 253 i, NULL, 0); 254 if (IS_ERR(device)) { 255 err = PTR_ERR(device); 256 goto errout; 257 } 258 cards++; 259 } 260 if (!cards) { 261#ifdef MODULE 262 snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n"); 263#endif 264 err = -ENODEV; 265 goto errout; 266 } 267 return 0; 268 269 errout: 270 platform_driver_unregister(&snd_sb8_driver); 271 return err; 272} 273 274static void __exit alsa_card_sb8_exit(void) 275{ 276 platform_driver_unregister(&snd_sb8_driver); 277} 278 279module_init(alsa_card_sb8_init) 280module_exit(alsa_card_sb8_exit) 281