221 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>5 */6 7#include <linux/init.h>8#include <linux/err.h>9#include <linux/isa.h>10#include <linux/ioport.h>11#include <linux/module.h>12#include <sound/core.h>13#include <sound/sb.h>14#include <sound/opl3.h>15#include <sound/initval.h>16 17MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");18MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");19MODULE_LICENSE("GPL");20 21static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */22static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */23static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */24static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240,0x260 */25static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */26static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3 */27 28module_param_array(index, int, NULL, 0444);29MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");30module_param_array(id, charp, NULL, 0444);31MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");32module_param_array(enable, bool, NULL, 0444);33MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");34module_param_hw_array(port, long, ioport, NULL, 0444);35MODULE_PARM_DESC(port, "Port # for SB8 driver.");36module_param_hw_array(irq, int, irq, NULL, 0444);37MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");38module_param_hw_array(dma8, int, dma, NULL, 0444);39MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");40 41struct snd_sb8 {42 struct resource *fm_res; /* used to block FM i/o region for legacy cards */43 struct snd_sb *chip;44};45 46static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id)47{48 struct snd_sb *chip = dev_id;49 50 if (chip->open & SB_OPEN_PCM) {51 return snd_sb8dsp_interrupt(chip);52 } else {53 return snd_sb8dsp_midi_interrupt(chip);54 }55}56 57static int snd_sb8_match(struct device *pdev, unsigned int dev)58{59 if (!enable[dev])60 return 0;61 if (irq[dev] == SNDRV_AUTO_IRQ) {62 dev_err(pdev, "please specify irq\n");63 return 0;64 }65 if (dma8[dev] == SNDRV_AUTO_DMA) {66 dev_err(pdev, "please specify dma8\n");67 return 0;68 }69 return 1;70}71 72static int snd_sb8_probe(struct device *pdev, unsigned int dev)73{74 struct snd_sb *chip;75 struct snd_card *card;76 struct snd_sb8 *acard;77 struct snd_opl3 *opl3;78 int err;79 80 err = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,81 sizeof(struct snd_sb8), &card);82 if (err < 0)83 return err;84 acard = card->private_data;85 86 /*87 * Block the 0x388 port to avoid PnP conflicts.88 * No need to check this value after request_region,89 * as we never do anything with it.90 */91 acard->fm_res = devm_request_region(card->dev, 0x388, 4,92 "SoundBlaster FM");93 94 if (port[dev] != SNDRV_AUTO_PORT) {95 err = snd_sbdsp_create(card, port[dev], irq[dev],96 snd_sb8_interrupt, dma8[dev],97 -1, SB_HW_AUTO, &chip);98 if (err < 0)99 return err;100 } else {101 /* auto-probe legacy ports */102 static const unsigned long possible_ports[] = {103 0x220, 0x240, 0x260,104 };105 int i;106 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {107 err = snd_sbdsp_create(card, possible_ports[i],108 irq[dev],109 snd_sb8_interrupt,110 dma8[dev],111 -1,112 SB_HW_AUTO,113 &chip);114 if (err >= 0) {115 port[dev] = possible_ports[i];116 break;117 }118 }119 if (i >= ARRAY_SIZE(possible_ports))120 return -EINVAL;121 }122 acard->chip = chip;123 124 if (chip->hardware >= SB_HW_16) {125 if (chip->hardware == SB_HW_ALS100)126 dev_warn(pdev, "ALS100 chip detected at 0x%lx, try snd-als100 module\n",127 port[dev]);128 else129 dev_warn(pdev, "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",130 port[dev]);131 return -ENODEV;132 }133 134 err = snd_sb8dsp_pcm(chip, 0);135 if (err < 0)136 return err;137 138 err = snd_sbmixer_new(chip);139 if (err < 0)140 return err;141 142 if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {143 err = snd_opl3_create(card, chip->port + 8, 0,144 OPL3_HW_AUTO, 1, &opl3);145 if (err < 0)146 dev_warn(pdev, "sb8: no OPL device at 0x%lx\n", chip->port + 8);147 } else {148 err = snd_opl3_create(card, chip->port, chip->port + 2,149 OPL3_HW_AUTO, 1, &opl3);150 if (err < 0) {151 dev_warn(pdev, "sb8: no OPL device at 0x%lx-0x%lx\n",152 chip->port, chip->port + 2);153 }154 }155 if (err >= 0) {156 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);157 if (err < 0)158 return err;159 }160 161 err = snd_sb8dsp_midi(chip, 0);162 if (err < 0)163 return err;164 165 strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");166 strcpy(card->shortname, chip->name);167 sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",168 chip->name,169 chip->port,170 irq[dev], dma8[dev]);171 172 err = snd_card_register(card);173 if (err < 0)174 return err;175 176 dev_set_drvdata(pdev, card);177 return 0;178}179 180#ifdef CONFIG_PM181static int snd_sb8_suspend(struct device *dev, unsigned int n,182 pm_message_t state)183{184 struct snd_card *card = dev_get_drvdata(dev);185 struct snd_sb8 *acard = card->private_data;186 struct snd_sb *chip = acard->chip;187 188 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);189 snd_sbmixer_suspend(chip);190 return 0;191}192 193static int snd_sb8_resume(struct device *dev, unsigned int n)194{195 struct snd_card *card = dev_get_drvdata(dev);196 struct snd_sb8 *acard = card->private_data;197 struct snd_sb *chip = acard->chip;198 199 snd_sbdsp_reset(chip);200 snd_sbmixer_resume(chip);201 snd_power_change_state(card, SNDRV_CTL_POWER_D0);202 return 0;203}204#endif205 206#define DEV_NAME "sb8"207 208static struct isa_driver snd_sb8_driver = {209 .match = snd_sb8_match,210 .probe = snd_sb8_probe,211#ifdef CONFIG_PM212 .suspend = snd_sb8_suspend,213 .resume = snd_sb8_resume,214#endif215 .driver = {216 .name = DEV_NAME 217 },218};219 220module_isa_driver(snd_sb8_driver, SNDRV_CARDS);221