linux/sound/isa/gus/gusclassic.c
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   1/*
   2 *  Driver for Gravis UltraSound Classic soundcard
   3 *  Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/init.h>
  23#include <linux/err.h>
  24#include <linux/isa.h>
  25#include <linux/delay.h>
  26#include <linux/time.h>
  27#include <linux/module.h>
  28#include <asm/dma.h>
  29#include <sound/core.h>
  30#include <sound/gus.h>
  31#define SNDRV_LEGACY_FIND_FREE_IRQ
  32#define SNDRV_LEGACY_FIND_FREE_DMA
  33#include <sound/initval.h>
  34
  35#define CRD_NAME "Gravis UltraSound Classic"
  36#define DEV_NAME "gusclassic"
  37
  38MODULE_DESCRIPTION(CRD_NAME);
  39MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  40MODULE_LICENSE("GPL");
  41MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}");
  42
  43static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  44static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  45static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
  46static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x230,0x240,0x250,0x260 */
  47static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 3,5,9,11,12,15 */
  48static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3,5,6,7 */
  49static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3,5,6,7 */
  50static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
  51                                /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
  52static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
  53static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
  54
  55module_param_array(index, int, NULL, 0444);
  56MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
  57module_param_array(id, charp, NULL, 0444);
  58MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
  59module_param_array(enable, bool, NULL, 0444);
  60MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
  61module_param_array(port, long, NULL, 0444);
  62MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
  63module_param_array(irq, int, NULL, 0444);
  64MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
  65module_param_array(dma1, int, NULL, 0444);
  66MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
  67module_param_array(dma2, int, NULL, 0444);
  68MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
  69module_param_array(joystick_dac, int, NULL, 0444);
  70MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for " CRD_NAME " driver.");
  71module_param_array(channels, int, NULL, 0444);
  72MODULE_PARM_DESC(channels, "GF1 channels for " CRD_NAME " driver.");
  73module_param_array(pcm_channels, int, NULL, 0444);
  74MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for " CRD_NAME " driver.");
  75
  76static int snd_gusclassic_match(struct device *dev, unsigned int n)
  77{
  78        return enable[n];
  79}
  80
  81static int snd_gusclassic_create(struct snd_card *card,
  82                                 struct device *dev, unsigned int n,
  83                                 struct snd_gus_card **rgus)
  84{
  85        static long possible_ports[] = {0x220, 0x230, 0x240, 0x250, 0x260};
  86        static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
  87        static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
  88
  89        int i, error;
  90
  91        if (irq[n] == SNDRV_AUTO_IRQ) {
  92                irq[n] = snd_legacy_find_free_irq(possible_irqs);
  93                if (irq[n] < 0) {
  94                        dev_err(dev, "unable to find a free IRQ\n");
  95                        return -EBUSY;
  96                }
  97        }
  98        if (dma1[n] == SNDRV_AUTO_DMA) {
  99                dma1[n] = snd_legacy_find_free_dma(possible_dmas);
 100                if (dma1[n] < 0) {
 101                        dev_err(dev, "unable to find a free DMA1\n");
 102                        return -EBUSY;
 103                }
 104        }
 105        if (dma2[n] == SNDRV_AUTO_DMA) {
 106                dma2[n] = snd_legacy_find_free_dma(possible_dmas);
 107                if (dma2[n] < 0) {
 108                        dev_err(dev, "unable to find a free DMA2\n");
 109                        return -EBUSY;
 110                }
 111        }
 112
 113        if (port[n] != SNDRV_AUTO_PORT)
 114                return snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
 115                                0, channels[n], pcm_channels[n], 0, rgus);
 116
 117        i = 0;
 118        do {
 119                port[n] = possible_ports[i];
 120                error = snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
 121                                0, channels[n], pcm_channels[n], 0, rgus);
 122        } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
 123
 124        return error;
 125}
 126
 127static int snd_gusclassic_detect(struct snd_gus_card *gus)
 128{
 129        unsigned char d;
 130
 131        snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);   /* reset GF1 */
 132        if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
 133                snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
 134                return -ENODEV;
 135        }
 136        udelay(160);
 137        snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* release reset */
 138        udelay(160);
 139        if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
 140                snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
 141                return -ENODEV;
 142        }
 143        return 0;
 144}
 145
 146static int snd_gusclassic_probe(struct device *dev, unsigned int n)
 147{
 148        struct snd_card *card;
 149        struct snd_gus_card *gus;
 150        int error;
 151
 152        error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
 153        if (error < 0)
 154                return error;
 155
 156        if (pcm_channels[n] < 2)
 157                pcm_channels[n] = 2;
 158
 159        error = snd_gusclassic_create(card, dev, n, &gus);
 160        if (error < 0)
 161                goto out;
 162
 163        error = snd_gusclassic_detect(gus);
 164        if (error < 0)
 165                goto out;
 166
 167        gus->joystick_dac = joystick_dac[n];
 168
 169        error = snd_gus_initialize(gus);
 170        if (error < 0)
 171                goto out;
 172
 173        error = -ENODEV;
 174        if (gus->max_flag || gus->ess_flag) {
 175                dev_err(dev, "GUS Classic or ACE soundcard was "
 176                        "not detected at 0x%lx\n", gus->gf1.port);
 177                goto out;
 178        }
 179
 180        error = snd_gf1_new_mixer(gus);
 181        if (error < 0)
 182                goto out;
 183
 184        error = snd_gf1_pcm_new(gus, 0, 0);
 185        if (error < 0)
 186                goto out;
 187
 188        if (!gus->ace_flag) {
 189                error = snd_gf1_rawmidi_new(gus, 0);
 190                if (error < 0)
 191                        goto out;
 192        }
 193
 194        sprintf(card->longname + strlen(card->longname),
 195                " at 0x%lx, irq %d, dma %d",
 196                gus->gf1.port, gus->gf1.irq, gus->gf1.dma1);
 197
 198        if (gus->gf1.dma2 >= 0)
 199                sprintf(card->longname + strlen(card->longname),
 200                        "&%d", gus->gf1.dma2);
 201
 202        error = snd_card_register(card);
 203        if (error < 0)
 204                goto out;
 205
 206        dev_set_drvdata(dev, card);
 207        return 0;
 208
 209out:    snd_card_free(card);
 210        return error;
 211}
 212
 213static int snd_gusclassic_remove(struct device *dev, unsigned int n)
 214{
 215        snd_card_free(dev_get_drvdata(dev));
 216        return 0;
 217}
 218
 219static struct isa_driver snd_gusclassic_driver = {
 220        .match          = snd_gusclassic_match,
 221        .probe          = snd_gusclassic_probe,
 222        .remove         = snd_gusclassic_remove,
 223#if 0   /* FIXME */
 224        .suspend        = snd_gusclassic_suspend,
 225        .remove         = snd_gusclassic_remove,
 226#endif
 227        .driver         = {
 228                .name   = DEV_NAME
 229        }
 230};
 231
 232static int __init alsa_card_gusclassic_init(void)
 233{
 234        return isa_register_driver(&snd_gusclassic_driver, SNDRV_CARDS);
 235}
 236
 237static void __exit alsa_card_gusclassic_exit(void)
 238{
 239        isa_unregister_driver(&snd_gusclassic_driver);
 240}
 241
 242module_init(alsa_card_gusclassic_init);
 243module_exit(alsa_card_gusclassic_exit);
 244