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   1 /*
   2  *  Driver for Gravis UltraSound Classic soundcard
   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/delay.h>
  27 #include <linux/time.h>
  28 #include <linux/moduleparam.h>
  29 #include <asm/dma.h>
  30 #include <sound/core.h>
  31 #include <sound/gus.h>
  32 #define SNDRV_LEGACY_FIND_FREE_IRQ
  33 #define SNDRV_LEGACY_FIND_FREE_DMA
  34 #include <sound/initval.h>
  35
  36 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  37 MODULE_DESCRIPTION("Gravis UltraSound Classic");
  38 MODULE_LICENSE("GPL");
  39 MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}");
  40
  41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  43 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  44 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x230,0x240,0x250,0x260 */
  45 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 3,5,9,11,12,15 */
  46 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3,5,6,7 */
  47 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3,5,6,7 */
  48 static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
  49                                 /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
  50 static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
  51 static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
  52
  53 module_param_array(index, int, NULL, 0444);
  54 MODULE_PARM_DESC(index, "Index value for GUS Classic soundcard.");
  55 module_param_array(id, charp, NULL, 0444);
  56 MODULE_PARM_DESC(id, "ID string for GUS Classic soundcard.");
  57 module_param_array(enable, bool, NULL, 0444);
  58 MODULE_PARM_DESC(enable, "Enable GUS Classic soundcard.");
  59 module_param_array(port, long, NULL, 0444);
  60 MODULE_PARM_DESC(port, "Port # for GUS Classic driver.");
  61 module_param_array(irq, int, NULL, 0444);
  62 MODULE_PARM_DESC(irq, "IRQ # for GUS Classic driver.");
  63 module_param_array(dma1, int, NULL, 0444);
  64 MODULE_PARM_DESC(dma1, "DMA1 # for GUS Classic driver.");
  65 module_param_array(dma2, int, NULL, 0444);
  66 MODULE_PARM_DESC(dma2, "DMA2 # for GUS Classic driver.");
  67 module_param_array(joystick_dac, int, NULL, 0444);
  68 MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS Classic driver.");
  69 module_param_array(channels, int, NULL, 0444);
  70 MODULE_PARM_DESC(channels, "GF1 channels for GUS Classic driver.");
  71 module_param_array(pcm_channels, int, NULL, 0444);
  72 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Classic driver.");
  73
  74
  75 #define PFX     "gusclassic: "
  76
  77 static int __init snd_gusclassic_detect(struct snd_gus_card * gus)
  78 {
  79         unsigned char d;
  80
  81         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);   /* reset GF1 */
  82         if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
  83                 snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
  84                 return -ENODEV;
  85         }
  86         udelay(160);
  87         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* release reset */
  88         udelay(160);
  89         if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
  90                 snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
  91                 return -ENODEV;
  92         }
  93         return 0;
  94 }
  95
  96 static void __init snd_gusclassic_init(int dev, struct snd_gus_card * gus)
  97 {
  98         gus->equal_irq = 0;
  99         gus->codec_flag = 0;
 100         gus->max_flag = 0;
 101         gus->joystick_dac = joystick_dac[dev];
 102 }
 103
 104 static int __init snd_gusclassic_probe(struct platform_device *pdev)
 105 {
 106         int dev = pdev->id;
 107         static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
 108         static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
 109         int xirq, xdma1, xdma2;
 110         struct snd_card *card;
 111         struct snd_gus_card *gus = NULL;
 112         int err;
 113
 114         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 115         if (card == NULL)
 116                 return -ENOMEM;
 117         if (pcm_channels[dev] < 2)
 118                 pcm_channels[dev] = 2;
 119
 120         xirq = irq[dev];
 121         if (xirq == SNDRV_AUTO_IRQ) {
 122                 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
 123                         snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
 124                         err = -EBUSY;
 125                         goto _err;
 126                 }
 127         }
 128         xdma1 = dma1[dev];
 129         if (xdma1 == SNDRV_AUTO_DMA) {
 130                 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
 131                         snd_printk(KERN_ERR PFX "unable to find a free DMA1\n");
 132                         err = -EBUSY;
 133                         goto _err;
 134                 }
 135         }
 136         xdma2 = dma2[dev];
 137         if (xdma2 == SNDRV_AUTO_DMA) {
 138                 if ((xdma2 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
 139                         snd_printk(KERN_ERR PFX "unable to find a free DMA2\n");
 140                         err = -EBUSY;
 141                         goto _err;
 142                 }
 143         }
 144
 145         if (port[dev] != SNDRV_AUTO_PORT) {
 146                 err = snd_gus_create(card,
 147                                      port[dev],
 148                                      xirq, xdma1, xdma2,
 149                                      0, channels[dev], pcm_channels[dev],
 150                                      0, &gus);
 151         } else {
 152                 /* auto-probe legacy ports */
 153                 static unsigned long possible_ports[] = {
 154                         0x220, 0x230, 0x240, 0x250, 0x260,
 155                 };
 156                 int i;
 157                 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
 158                         err = snd_gus_create(card,
 159                                              possible_ports[i],
 160                                              xirq, xdma1, xdma2,
 161                                              0, channels[dev], pcm_channels[dev],
 162                                              0, &gus);
 163                         if (err >= 0) {
 164                                 port[dev] = possible_ports[i];
 165                                 break;
 166                         }
 167                 }
 168         }
 169         if (err < 0)
 170                 goto _err;
 171
 172         if ((err = snd_gusclassic_detect(gus)) < 0)
 173                 goto _err;
 174
 175         snd_gusclassic_init(dev, gus);
 176         if ((err = snd_gus_initialize(gus)) < 0)
 177                 goto _err;
 178
 179         if (gus->max_flag || gus->ess_flag) {
 180                 snd_printk(KERN_ERR PFX "GUS Classic or ACE soundcard was not detected at 0x%lx\n", gus->gf1.port);
 181                 err = -ENODEV;
 182                 goto _err;
 183         }
 184
 185         if ((err = snd_gf1_new_mixer(gus)) < 0)
 186                 goto _err;
 187
 188         if ((err = snd_gf1_pcm_new(gus, 0, 0, NULL)) < 0)
 189                 goto _err;
 190
 191         if (!gus->ace_flag) {
 192                 if ((err = snd_gf1_rawmidi_new(gus, 0, NULL)) < 0)
 193                         goto _err;
 194         }
 195         sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %d, dma %d", gus->gf1.port, xirq, xdma1);
 196         if (dma2 >= 0)
 197                 sprintf(card->longname + strlen(card->longname), "&%d", xdma2);
 198
 199         snd_card_set_dev(card, &pdev->dev);
 200
 201         if ((err = snd_card_register(card)) < 0)
 202                 goto _err;
 203
 204         platform_set_drvdata(pdev, card);
 205         return 0;
 206
 207  _err:
 208         snd_card_free(card);
 209         return err;
 210 }
 211
 212 static int snd_gusclassic_remove(struct platform_device *devptr)
 213 {
 214         snd_card_free(platform_get_drvdata(devptr));
 215         platform_set_drvdata(devptr, NULL);
 216         return 0;
 217 }
 218
 219 #define GUSCLASSIC_DRIVER       "snd_gusclassic"
 220
 221 static struct platform_driver snd_gusclassic_driver = {
 222         .probe          = snd_gusclassic_probe,
 223         .remove         = snd_gusclassic_remove,
 224         /* FIXME: suspend/resume */
 225         .driver         = {
 226                 .name   = GUSCLASSIC_DRIVER
 227         },
 228 };
 229
 230 static int __init alsa_card_gusclassic_init(void)
 231 {
 232         int i, cards, err;
 233
 234         err = platform_driver_register(&snd_gusclassic_driver);
 235         if (err < 0)
 236                 return err;
 237
 238         cards = 0;
 239         for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
 240                 struct platform_device *device;
 241                 device = platform_device_register_simple(GUSCLASSIC_DRIVER,
 242                                                          i, NULL, 0);
 243                 if (IS_ERR(device)) {
 244                         err = PTR_ERR(device);
 245                         goto errout;
 246                 }
 247                 cards++;
 248         }
 249         if (!cards) {
 250 #ifdef MODULE
 251                 printk(KERN_ERR "GUS Classic soundcard not found or device busy\n");
 252 #endif
 253                 err = -ENODEV;
 254                 goto errout;
 255         }
 256         return 0;
 257
 258  errout:
 259         platform_driver_unregister(&snd_gusclassic_driver);
 260         return err;
 261 }
 262
 263 static void __exit alsa_card_gusclassic_exit(void)
 264 {
 265         platform_driver_unregister(&snd_gusclassic_driver);
 266 }
 267
 268 module_init(alsa_card_gusclassic_init)
 269 module_exit(alsa_card_gusclassic_exit)