sound/isa/sgalaxy.c

   1 /*
   2  *  Driver for Aztech Sound Galaxy cards
   3  *  Copyright (c) by Christopher Butler <chrisb@sandy.force9.co.uk.
   4  *
   5  *  I don't have documentation for this card, I based this driver on the
   6  *  driver for OSS/Free included in the kernel source (drivers/sound/sgalaxy.c)
   7  *
   8  *   This program is free software; you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  *
  22  */
  23
  24 #include <sound/driver.h>
  25 #include <linux/init.h>
  26 #include <linux/err.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/delay.h>
  29 #include <linux/time.h>
  30 #include <linux/interrupt.h>
  31 #include <linux/moduleparam.h>
  32 #include <asm/dma.h>
  33 #include <sound/core.h>
  34 #include <sound/sb.h>
  35 #include <sound/ad1848.h>
  36 #include <sound/control.h>
  37 #define SNDRV_LEGACY_FIND_FREE_IRQ
  38 #define SNDRV_LEGACY_FIND_FREE_DMA
  39 #include <sound/initval.h>
  40
  41 MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
  42 MODULE_DESCRIPTION("Aztech Sound Galaxy");
  43 MODULE_LICENSE("GPL");
  44 MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
  45
  46 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  47 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  48 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  49 static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;   /* 0x220,0x240 */
  50 static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;  /* 0x530,0xe80,0xf40,0x604 */
  51 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 7,9,10,11 */
  52 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3 */
  53
  54 module_param_array(index, int, NULL, 0444);
  55 MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
  56 module_param_array(id, charp, NULL, 0444);
  57 MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
  58 module_param_array(sbport, long, NULL, 0444);
  59 MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
  60 module_param_array(wssport, long, NULL, 0444);
  61 MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
  62 module_param_array(irq, int, NULL, 0444);
  63 MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
  64 module_param_array(dma1, int, NULL, 0444);
  65 MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");
  66
  67 static struct platform_device *devices[SNDRV_CARDS];
  68
  69 #define SGALAXY_AUXC_LEFT 18
  70 #define SGALAXY_AUXC_RIGHT 19
  71
  72 #define PFX     "sgalaxy: "
  73
  74 /*
  75
  76  */
  77
  78 #define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
  79
  80 /* from lowlevel/sb/sb.c - to avoid having to allocate a struct snd_sb for the */
  81 /* short time we actually need it.. */
  82
  83 static int snd_sgalaxy_sbdsp_reset(unsigned long port)
  84 {
  85         int i;
  86
  87         outb(1, SBP1(port, RESET));
  88         udelay(10);
  89         outb(0, SBP1(port, RESET));
  90         udelay(30);
  91         for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
  92         if (inb(SBP1(port, READ)) != 0xaa) {
  93                 snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
  94                 return -ENODEV;
  95         }
  96         return 0;
  97 }
  98
  99 static int __init snd_sgalaxy_sbdsp_command(unsigned long port, unsigned char val)
 100 {
 101         int i;
 102
 103         for (i = 10000; i; i--)
 104                 if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
 105                         outb(val, SBP1(port, COMMAND));
 106                         return 1;
 107                 }
 108
 109         return 0;
 110 }
 111
 112 static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 113 {
 114         return IRQ_NONE;
 115 }
 116
 117 static int __init snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
 118 {
 119         static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1,
 120                                        0x10, 0x18, 0x20, -1, -1, -1, -1};
 121         static int dma_bits[] = {1, 2, 0, 3};
 122         int tmp, tmp1;
 123
 124         if ((tmp = inb(port + 3)) == 0xff)
 125         {
 126                 snd_printdd("I/O address dead (0x%lx)\n", port);
 127                 return 0;
 128         }
 129 #if 0
 130         snd_printdd("WSS signature = 0x%x\n", tmp);
 131 #endif
 132
 133         if ((tmp & 0x3f) != 0x04 &&
 134             (tmp & 0x3f) != 0x0f &&
 135             (tmp & 0x3f) != 0x00) {
 136                 snd_printdd("No WSS signature detected on port 0x%lx\n",
 137                             port + 3);
 138                 return 0;
 139         }
 140
 141 #if 0
 142         snd_printdd(PFX "setting up IRQ/DMA for WSS\n");
 143 #endif
 144
 145         /* initialize IRQ for WSS codec */
 146         tmp = interrupt_bits[irq % 16];
 147         if (tmp < 0)
 148                 return -EINVAL;
 149
 150         if (request_irq(irq, snd_sgalaxy_dummy_interrupt, SA_INTERRUPT, "sgalaxy", NULL)) {
 151                 snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
 152                 return -EIO;
 153         }
 154
 155         outb(tmp | 0x40, port);
 156         tmp1 = dma_bits[dma % 4];
 157         outb(tmp | tmp1, port);
 158
 159         free_irq(irq, NULL);
 160
 161         return 0;
 162 }
 163
 164 static int __init snd_sgalaxy_detect(int dev, int irq, int dma)
 165 {
 166 #if 0
 167         snd_printdd(PFX "switching to WSS mode\n");
 168 #endif
 169
 170         /* switch to WSS mode */
 171         snd_sgalaxy_sbdsp_reset(sbport[dev]);
 172
 173         snd_sgalaxy_sbdsp_command(sbport[dev], 9);
 174         snd_sgalaxy_sbdsp_command(sbport[dev], 0);
 175
 176         udelay(400);
 177         return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
 178 }
 179
 180 static struct ad1848_mix_elem snd_sgalaxy_controls[] = {
 181 AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
 182 AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
 183 };
 184
 185 static int __init snd_sgalaxy_mixer(struct snd_ad1848 *chip)
 186 {
 187         struct snd_card *card = chip->card;
 188         struct snd_ctl_elem_id id1, id2;
 189         unsigned int idx;
 190         int err;
 191
 192         memset(&id1, 0, sizeof(id1));
 193         memset(&id2, 0, sizeof(id2));
 194         id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 195         /* reassign AUX0 to LINE */
 196         strcpy(id1.name, "Aux Playback Switch");
 197         strcpy(id2.name, "Line Playback Switch");
 198         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 199                 return err;
 200         strcpy(id1.name, "Aux Playback Volume");
 201         strcpy(id2.name, "Line Playback Volume");
 202         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 203                 return err;
 204         /* reassign AUX1 to FM */
 205         strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
 206         strcpy(id2.name, "FM Playback Switch");
 207         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 208                 return err;
 209         strcpy(id1.name, "Aux Playback Volume");
 210         strcpy(id2.name, "FM Playback Volume");
 211         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 212                 return err;
 213         /* build AUX2 input */
 214         for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
 215                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_sgalaxy_controls[idx])) < 0)
 216                         return err;
 217         }
 218         return 0;
 219 }
 220
 221 static int __init snd_sgalaxy_probe(struct platform_device *devptr)
 222 {
 223         int dev = devptr->id;
 224         static int possible_irqs[] = {7, 9, 10, 11, -1};
 225         static int possible_dmas[] = {1, 3, 0, -1};
 226         int err, xirq, xdma1;
 227         struct snd_card *card;
 228         struct snd_ad1848 *chip;
 229
 230         if (sbport[dev] == SNDRV_AUTO_PORT) {
 231                 snd_printk(KERN_ERR PFX "specify SB port\n");
 232                 return -EINVAL;
 233         }
 234         if (wssport[dev] == SNDRV_AUTO_PORT) {
 235                 snd_printk(KERN_ERR PFX "specify WSS port\n");
 236                 return -EINVAL;
 237         }
 238         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 239         if (card == NULL)
 240                 return -ENOMEM;
 241
 242         xirq = irq[dev];
 243         if (xirq == SNDRV_AUTO_IRQ) {
 244                 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
 245                         snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
 246                         err = -EBUSY;
 247                         goto _err;
 248                 }
 249         }
 250         xdma1 = dma1[dev];
 251         if (xdma1 == SNDRV_AUTO_DMA) {
 252                 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
 253                         snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
 254                         err = -EBUSY;
 255                         goto _err;
 256                 }
 257         }
 258
 259         if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0)
 260                 goto _err;
 261
 262         if ((err = snd_ad1848_create(card, wssport[dev] + 4,
 263                                      xirq, xdma1,
 264                                      AD1848_HW_DETECT, &chip)) < 0)
 265                 goto _err;
 266         card->private_data = chip;
 267
 268         if ((err = snd_ad1848_pcm(chip, 0, NULL)) < 0) {
 269                 snd_printdd(PFX "error creating new ad1848 PCM device\n");
 270                 goto _err;
 271         }
 272         if ((err = snd_ad1848_mixer(chip)) < 0) {
 273                 snd_printdd(PFX "error creating new ad1848 mixer\n");
 274                 goto _err;
 275         }
 276         if ((err = snd_sgalaxy_mixer(chip)) < 0) {
 277                 snd_printdd(PFX "the mixer rewrite failed\n");
 278                 goto _err;
 279         }
 280
 281         strcpy(card->driver, "Sound Galaxy");
 282         strcpy(card->shortname, "Sound Galaxy");
 283         sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
 284                 wssport[dev], xirq, xdma1);
 285
 286         snd_card_set_dev(card, &devptr->dev);
 287
 288         if ((err = snd_card_register(card)) < 0)
 289                 goto _err;
 290
 291         platform_set_drvdata(devptr, card);
 292         return 0;
 293
 294  _err:
 295         snd_card_free(card);
 296         return err;
 297 }
 298
 299 static int __devexit snd_sgalaxy_remove(struct platform_device *devptr)
 300 {
 301         snd_card_free(platform_get_drvdata(devptr));
 302         platform_set_drvdata(devptr, NULL);
 303         return 0;
 304 }
 305
 306 #ifdef CONFIG_PM
 307 static int snd_sgalaxy_suspend(struct platform_device *pdev, pm_message_t state)
 308 {
 309         struct snd_card *card = platform_get_drvdata(pdev);
 310         struct snd_ad1848 *chip = card->private_data;
 311
 312         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 313         chip->suspend(chip);
 314         return 0;
 315 }
 316
 317 static int snd_sgalaxy_resume(struct platform_device *pdev)
 318 {
 319         struct snd_card *card = platform_get_drvdata(pdev);
 320         struct snd_ad1848 *chip = card->private_data;
 321
 322         chip->resume(chip);
 323         snd_ad1848_out(chip, SGALAXY_AUXC_LEFT, chip->image[SGALAXY_AUXC_LEFT]);
 324         snd_ad1848_out(chip, SGALAXY_AUXC_RIGHT, chip->image[SGALAXY_AUXC_RIGHT]);
 325
 326         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 327         return 0;
 328 }
 329 #endif
 330
 331 #define SND_SGALAXY_DRIVER      "snd_sgalaxy"
 332
 333 static struct platform_driver snd_sgalaxy_driver = {
 334         .probe          = snd_sgalaxy_probe,
 335         .remove         = __devexit_p(snd_sgalaxy_remove),
 336 #ifdef CONFIG_PM
 337         .suspend        = snd_sgalaxy_suspend,
 338         .resume         = snd_sgalaxy_resume,
 339 #endif
 340         .driver         = {
 341                 .name   = SND_SGALAXY_DRIVER
 342         },
 343 };
 344
 345 static void __init_or_module snd_sgalaxy_unregister_all(void)
 346 {
 347         int i;
 348
 349         for (i = 0; i < ARRAY_SIZE(devices); ++i)
 350                 platform_device_unregister(devices[i]);
 351         platform_driver_unregister(&snd_sgalaxy_driver);
 352 }
 353
 354 static int __init alsa_card_sgalaxy_init(void)
 355 {
 356         int i, cards, err;
 357
 358         err = platform_driver_register(&snd_sgalaxy_driver);
 359         if (err < 0)
 360                 return err;
 361
 362         cards = 0;
 363         for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
 364                 struct platform_device *device;
 365                 device = platform_device_register_simple(SND_SGALAXY_DRIVER,
 366                                                          i, NULL, 0);
 367                 if (IS_ERR(device)) {
 368                         err = PTR_ERR(device);
 369                         goto errout;
 370                 }
 371                 devices[i] = device;
 372                 cards++;
 373         }
 374         if (!cards) {
 375 #ifdef MODULE
 376                 snd_printk(KERN_ERR "Sound Galaxy soundcard not found or device busy\n");
 377 #endif
 378                 err = -ENODEV;
 379                 goto errout;
 380         }
 381         return 0;
 382
 383  errout:
 384         snd_sgalaxy_unregister_all();
 385         return err;
 386 }
 387
 388 static void __exit alsa_card_sgalaxy_exit(void)
 389 {
 390         snd_sgalaxy_unregister_all();
 391 }
 392
 393 module_init(alsa_card_sgalaxy_init)
 394 module_exit(alsa_card_sgalaxy_exit)