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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Driver for Gravis UltraSound Classic soundcard4 * 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/delay.h>11#include <linux/time.h>12#include <linux/module.h>13#include <asm/dma.h>14#include <sound/core.h>15#include <sound/gus.h>16#define SNDRV_LEGACY_FIND_FREE_IRQ17#define SNDRV_LEGACY_FIND_FREE_DMA18#include <sound/initval.h>19 20#define CRD_NAME "Gravis UltraSound Classic"21#define DEV_NAME "gusclassic"22 23MODULE_DESCRIPTION(CRD_NAME);24MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");25MODULE_LICENSE("GPL");26 27static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */28static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */29static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */30static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x230,0x240,0x250,0x260 */31static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 3,5,9,11,12,15 */32static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */33static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */34static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};35 /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */36static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};37static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};38 39module_param_array(index, int, NULL, 0444);40MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");41module_param_array(id, charp, NULL, 0444);42MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");43module_param_array(enable, bool, NULL, 0444);44MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");45module_param_hw_array(port, long, ioport, NULL, 0444);46MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");47module_param_hw_array(irq, int, irq, NULL, 0444);48MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");49module_param_hw_array(dma1, int, dma, NULL, 0444);50MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");51module_param_hw_array(dma2, int, dma, NULL, 0444);52MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");53module_param_array(joystick_dac, int, NULL, 0444);54MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for " CRD_NAME " driver.");55module_param_array(channels, int, NULL, 0444);56MODULE_PARM_DESC(channels, "GF1 channels for " CRD_NAME " driver.");57module_param_array(pcm_channels, int, NULL, 0444);58MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for " CRD_NAME " driver.");59 60static int snd_gusclassic_match(struct device *dev, unsigned int n)61{62 return enable[n];63}64 65static int snd_gusclassic_create(struct snd_card *card,66 struct device *dev, unsigned int n,67 struct snd_gus_card **rgus)68{69 static const long possible_ports[] = {0x220, 0x230, 0x240, 0x250, 0x260};70 static const int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};71 static const int possible_dmas[] = {5, 6, 7, 1, 3, -1};72 73 int i, error;74 75 if (irq[n] == SNDRV_AUTO_IRQ) {76 irq[n] = snd_legacy_find_free_irq(possible_irqs);77 if (irq[n] < 0) {78 dev_err(dev, "unable to find a free IRQ\n");79 return -EBUSY;80 }81 }82 if (dma1[n] == SNDRV_AUTO_DMA) {83 dma1[n] = snd_legacy_find_free_dma(possible_dmas);84 if (dma1[n] < 0) {85 dev_err(dev, "unable to find a free DMA1\n");86 return -EBUSY;87 }88 }89 if (dma2[n] == SNDRV_AUTO_DMA) {90 dma2[n] = snd_legacy_find_free_dma(possible_dmas);91 if (dma2[n] < 0) {92 dev_err(dev, "unable to find a free DMA2\n");93 return -EBUSY;94 }95 }96 97 if (port[n] != SNDRV_AUTO_PORT)98 return snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],99 0, channels[n], pcm_channels[n], 0, rgus);100 101 i = 0;102 do {103 port[n] = possible_ports[i];104 error = snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],105 0, channels[n], pcm_channels[n], 0, rgus);106 } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));107 108 return error;109}110 111static int snd_gusclassic_detect(struct snd_gus_card *gus)112{113 unsigned char d;114 115 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */116 d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);117 if ((d & 0x07) != 0) {118 dev_dbg(gus->card->dev, "[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);119 return -ENODEV;120 }121 udelay(160);122 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */123 udelay(160);124 d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);125 if ((d & 0x07) != 1) {126 dev_dbg(gus->card->dev, "[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);127 return -ENODEV;128 }129 return 0;130}131 132static int snd_gusclassic_probe(struct device *dev, unsigned int n)133{134 struct snd_card *card;135 struct snd_gus_card *gus;136 int error;137 138 error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);139 if (error < 0)140 return error;141 142 if (pcm_channels[n] < 2)143 pcm_channels[n] = 2;144 145 error = snd_gusclassic_create(card, dev, n, &gus);146 if (error < 0)147 return error;148 149 error = snd_gusclassic_detect(gus);150 if (error < 0)151 return error;152 153 gus->joystick_dac = joystick_dac[n];154 155 error = snd_gus_initialize(gus);156 if (error < 0)157 return error;158 159 error = -ENODEV;160 if (gus->max_flag || gus->ess_flag) {161 dev_err(dev, "GUS Classic or ACE soundcard was "162 "not detected at 0x%lx\n", gus->gf1.port);163 return error;164 }165 166 error = snd_gf1_new_mixer(gus);167 if (error < 0)168 return error;169 170 error = snd_gf1_pcm_new(gus, 0, 0);171 if (error < 0)172 return error;173 174 if (!gus->ace_flag) {175 error = snd_gf1_rawmidi_new(gus, 0);176 if (error < 0)177 return error;178 }179 180 sprintf(card->longname + strlen(card->longname),181 " at 0x%lx, irq %d, dma %d",182 gus->gf1.port, gus->gf1.irq, gus->gf1.dma1);183 184 if (gus->gf1.dma2 >= 0)185 sprintf(card->longname + strlen(card->longname),186 "&%d", gus->gf1.dma2);187 188 error = snd_card_register(card);189 if (error < 0)190 return error;191 192 dev_set_drvdata(dev, card);193 return 0;194}195 196static struct isa_driver snd_gusclassic_driver = {197 .match = snd_gusclassic_match,198 .probe = snd_gusclassic_probe,199#if 0 /* FIXME */200 .suspend = snd_gusclassic_suspend,201#endif202 .driver = {203 .name = DEV_NAME204 }205};206 207module_isa_driver(snd_gusclassic_driver, SNDRV_CARDS);208