isa/gus/gusclassic.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  Driver for Gravis UltraSound Classic soundcard
0004  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
0005  */
0006
0007 #include <linux/init.h>
0008 #include <linux/err.h>
0009 #include <linux/isa.h>
0010 #include <linux/delay.h>
0011 #include <linux/time.h>
0012 #include <linux/module.h>
0013 #include <asm/dma.h>
0014 #include <sound/core.h>
0015 #include <sound/gus.h>
0016 #define SNDRV_LEGACY_FIND_FREE_IRQ
0017 #define SNDRV_LEGACY_FIND_FREE_DMA
0018 #include <sound/initval.h>
0019
0020 #define CRD_NAME "Gravis UltraSound Classic"
0021 #define DEV_NAME "gusclassic"
0022
0023 MODULE_DESCRIPTION(CRD_NAME);
0024 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
0025 MODULE_LICENSE("GPL");
0026
0027 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;  /* Index 0-MAX */
0028 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;   /* ID for this card */
0029 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
0030 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x230,0x240,0x250,0x260 */
0031 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;    /* 3,5,9,11,12,15 */
0032 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;   /* 1,3,5,6,7 */
0033 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;   /* 1,3,5,6,7 */
0034 static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
0035                 /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
0036 static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
0037 static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
0038
0039 module_param_array(index, int, NULL, 0444);
0040 MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
0041 module_param_array(id, charp, NULL, 0444);
0042 MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
0043 module_param_array(enable, bool, NULL, 0444);
0044 MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
0045 module_param_hw_array(port, long, ioport, NULL, 0444);
0046 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
0047 module_param_hw_array(irq, int, irq, NULL, 0444);
0048 MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
0049 module_param_hw_array(dma1, int, dma, NULL, 0444);
0050 MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
0051 module_param_hw_array(dma2, int, dma, NULL, 0444);
0052 MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
0053 module_param_array(joystick_dac, int, NULL, 0444);
0054 MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for " CRD_NAME " driver.");
0055 module_param_array(channels, int, NULL, 0444);
0056 MODULE_PARM_DESC(channels, "GF1 channels for " CRD_NAME " driver.");
0057 module_param_array(pcm_channels, int, NULL, 0444);
0058 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for " CRD_NAME " driver.");
0059
0060 static int snd_gusclassic_match(struct device *dev, unsigned int n)
0061 {
0062     return enable[n];
0063 }
0064
0065 static int snd_gusclassic_create(struct snd_card *card,
0066                  struct device *dev, unsigned int n,
0067                  struct snd_gus_card **rgus)
0068 {
0069     static const long possible_ports[] = {0x220, 0x230, 0x240, 0x250, 0x260};
0070     static const int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
0071     static const int possible_dmas[] = {5, 6, 7, 1, 3, -1};
0072
0073     int i, error;
0074
0075     if (irq[n] == SNDRV_AUTO_IRQ) {
0076         irq[n] = snd_legacy_find_free_irq(possible_irqs);
0077         if (irq[n] < 0) {
0078             dev_err(dev, "unable to find a free IRQ\n");
0079             return -EBUSY;
0080         }
0081     }
0082     if (dma1[n] == SNDRV_AUTO_DMA) {
0083         dma1[n] = snd_legacy_find_free_dma(possible_dmas);
0084         if (dma1[n] < 0) {
0085             dev_err(dev, "unable to find a free DMA1\n");
0086             return -EBUSY;
0087         }
0088     }
0089     if (dma2[n] == SNDRV_AUTO_DMA) {
0090         dma2[n] = snd_legacy_find_free_dma(possible_dmas);
0091         if (dma2[n] < 0) {
0092             dev_err(dev, "unable to find a free DMA2\n");
0093             return -EBUSY;
0094         }
0095     }
0096
0097     if (port[n] != SNDRV_AUTO_PORT)
0098         return snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
0099                 0, channels[n], pcm_channels[n], 0, rgus);
0100
0101     i = 0;
0102     do {
0103         port[n] = possible_ports[i];
0104         error = snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
0105                 0, channels[n], pcm_channels[n], 0, rgus);
0106     } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
0107
0108     return error;
0109 }
0110
0111 static int snd_gusclassic_detect(struct snd_gus_card *gus)
0112 {
0113     unsigned char d;
0114
0115     snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);   /* reset GF1 */
0116     d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
0117     if ((d & 0x07) != 0) {
0118         snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
0119         return -ENODEV;
0120     }
0121     udelay(160);
0122     snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* release reset */
0123     udelay(160);
0124     d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
0125     if ((d & 0x07) != 1) {
0126         snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
0127         return -ENODEV;
0128     }
0129     return 0;
0130 }
0131
0132 static int snd_gusclassic_probe(struct device *dev, unsigned int n)
0133 {
0134     struct snd_card *card;
0135     struct snd_gus_card *gus;
0136     int error;
0137
0138     error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
0139     if (error < 0)
0140         return error;
0141
0142     if (pcm_channels[n] < 2)
0143         pcm_channels[n] = 2;
0144
0145     error = snd_gusclassic_create(card, dev, n, &gus);
0146     if (error < 0)
0147         return error;
0148
0149     error = snd_gusclassic_detect(gus);
0150     if (error < 0)
0151         return error;
0152
0153     gus->joystick_dac = joystick_dac[n];
0154
0155     error = snd_gus_initialize(gus);
0156     if (error < 0)
0157         return error;
0158
0159     error = -ENODEV;
0160     if (gus->max_flag || gus->ess_flag) {
0161         dev_err(dev, "GUS Classic or ACE soundcard was "
0162             "not detected at 0x%lx\n", gus->gf1.port);
0163         return error;
0164     }
0165
0166     error = snd_gf1_new_mixer(gus);
0167     if (error < 0)
0168         return error;
0169
0170     error = snd_gf1_pcm_new(gus, 0, 0);
0171     if (error < 0)
0172         return error;
0173
0174     if (!gus->ace_flag) {
0175         error = snd_gf1_rawmidi_new(gus, 0);
0176         if (error < 0)
0177             return error;
0178     }
0179
0180     sprintf(card->longname + strlen(card->longname),
0181         " at 0x%lx, irq %d, dma %d",
0182         gus->gf1.port, gus->gf1.irq, gus->gf1.dma1);
0183
0184     if (gus->gf1.dma2 >= 0)
0185         sprintf(card->longname + strlen(card->longname),
0186             "&%d", gus->gf1.dma2);
0187
0188     error = snd_card_register(card);
0189     if (error < 0)
0190         return error;
0191
0192     dev_set_drvdata(dev, card);
0193     return 0;
0194 }
0195
0196 static struct isa_driver snd_gusclassic_driver = {
0197     .match      = snd_gusclassic_match,
0198     .probe      = snd_gusclassic_probe,
0199 #if 0   /* FIXME */
0200     .suspend    = snd_gusclassic_suspend,
0201 #endif
0202     .driver     = {
0203         .name   = DEV_NAME
0204     }
0205 };
0206
0207 module_isa_driver(snd_gusclassic_driver, SNDRV_CARDS);