release/src-rt-6.x/linux/linux-2.6/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/isa.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 #define SGALAXY_AUXC_LEFT 18
  68 #define SGALAXY_AUXC_RIGHT 19
  69
  70 #define PFX     "sgalaxy: "
  71
  72 /*
  73
  74  */
  75
  76 #define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
  77
  78 /* from lowlevel/sb/sb.c - to avoid having to allocate a struct snd_sb for the */
  79 /* short time we actually need it.. */
  80
  81 static int snd_sgalaxy_sbdsp_reset(unsigned long port)
  82 {
  83         int i;
  84
  85         outb(1, SBP1(port, RESET));
  86         udelay(10);
  87         outb(0, SBP1(port, RESET));
  88         udelay(30);
  89         for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
  90         if (inb(SBP1(port, READ)) != 0xaa) {
  91                 snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
  92                 return -ENODEV;
  93         }
  94         return 0;
  95 }
  96
  97 static int __devinit snd_sgalaxy_sbdsp_command(unsigned long port,
  98                                                unsigned char val)
  99 {
 100         int i;
 101
 102         for (i = 10000; i; i--)
 103                 if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
 104                         outb(val, SBP1(port, COMMAND));
 105                         return 1;
 106                 }
 107
 108         return 0;
 109 }
 110
 111 static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id)
 112 {
 113         return IRQ_NONE;
 114 }
 115
 116 static int __devinit snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
 117 {
 118         static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1,
 119                                        0x10, 0x18, 0x20, -1, -1, -1, -1};
 120         static int dma_bits[] = {1, 2, 0, 3};
 121         int tmp, tmp1;
 122
 123         if ((tmp = inb(port + 3)) == 0xff)
 124         {
 125                 snd_printdd("I/O address dead (0x%lx)\n", port);
 126                 return 0;
 127         }
 128 #if 0
 129         snd_printdd("WSS signature = 0x%x\n", tmp);
 130 #endif
 131
 132         if ((tmp & 0x3f) != 0x04 &&
 133             (tmp & 0x3f) != 0x0f &&
 134             (tmp & 0x3f) != 0x00) {
 135                 snd_printdd("No WSS signature detected on port 0x%lx\n",
 136                             port + 3);
 137                 return 0;
 138         }
 139
 140 #if 0
 141         snd_printdd(PFX "setting up IRQ/DMA for WSS\n");
 142 #endif
 143
 144         /* initialize IRQ for WSS codec */
 145         tmp = interrupt_bits[irq % 16];
 146         if (tmp < 0)
 147                 return -EINVAL;
 148
 149         if (request_irq(irq, snd_sgalaxy_dummy_interrupt, IRQF_DISABLED, "sgalaxy", NULL)) {
 150                 snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
 151                 return -EIO;
 152         }
 153
 154         outb(tmp | 0x40, port);
 155         tmp1 = dma_bits[dma % 4];
 156         outb(tmp | tmp1, port);
 157
 158         free_irq(irq, NULL);
 159
 160         return 0;
 161 }
 162
 163 static int __devinit snd_sgalaxy_detect(int dev, int irq, int dma)
 164 {
 165 #if 0
 166         snd_printdd(PFX "switching to WSS mode\n");
 167 #endif
 168
 169         /* switch to WSS mode */
 170         snd_sgalaxy_sbdsp_reset(sbport[dev]);
 171
 172         snd_sgalaxy_sbdsp_command(sbport[dev], 9);
 173         snd_sgalaxy_sbdsp_command(sbport[dev], 0);
 174
 175         udelay(400);
 176         return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
 177 }
 178
 179 static struct ad1848_mix_elem snd_sgalaxy_controls[] = {
 180 AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
 181 AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
 182 };
 183
 184 static int __devinit snd_sgalaxy_mixer(struct snd_ad1848 *chip)
 185 {
 186         struct snd_card *card = chip->card;
 187         struct snd_ctl_elem_id id1, id2;
 188         unsigned int idx;
 189         int err;
 190
 191         memset(&id1, 0, sizeof(id1));
 192         memset(&id2, 0, sizeof(id2));
 193         id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 194         /* reassign AUX0 to LINE */
 195         strcpy(id1.name, "Aux Playback Switch");
 196         strcpy(id2.name, "Line Playback Switch");
 197         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 198                 return err;
 199         strcpy(id1.name, "Aux Playback Volume");
 200         strcpy(id2.name, "Line Playback Volume");
 201         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 202                 return err;
 203         /* reassign AUX1 to FM */
 204         strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
 205         strcpy(id2.name, "FM Playback Switch");
 206         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 207                 return err;
 208         strcpy(id1.name, "Aux Playback Volume");
 209         strcpy(id2.name, "FM Playback Volume");
 210         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 211                 return err;
 212         /* build AUX2 input */
 213         for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
 214                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_sgalaxy_controls[idx])) < 0)
 215                         return err;
 216         }
 217         return 0;
 218 }
 219
 220 static int __devinit snd_sgalaxy_match(struct device *devptr, unsigned int dev)
 221 {
 222         if (!enable[dev])
 223                 return 0;
 224         if (sbport[dev] == SNDRV_AUTO_PORT) {
 225                 snd_printk(KERN_ERR PFX "specify SB port\n");
 226                 return 0;
 227         }
 228         if (wssport[dev] == SNDRV_AUTO_PORT) {
 229                 snd_printk(KERN_ERR PFX "specify WSS port\n");
 230                 return 0;
 231         }
 232         return 1;
 233 }
 234
 235 static int __devinit snd_sgalaxy_probe(struct device *devptr, unsigned int dev)
 236 {
 237         static int possible_irqs[] = {7, 9, 10, 11, -1};
 238         static int possible_dmas[] = {1, 3, 0, -1};
 239         int err, xirq, xdma1;
 240         struct snd_card *card;
 241         struct snd_ad1848 *chip;
 242
 243         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 244         if (card == NULL)
 245                 return -ENOMEM;
 246
 247         xirq = irq[dev];
 248         if (xirq == SNDRV_AUTO_IRQ) {
 249                 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
 250                         snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
 251                         err = -EBUSY;
 252                         goto _err;
 253                 }
 254         }
 255         xdma1 = dma1[dev];
 256         if (xdma1 == SNDRV_AUTO_DMA) {
 257                 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
 258                         snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
 259                         err = -EBUSY;
 260                         goto _err;
 261                 }
 262         }
 263
 264         if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0)
 265                 goto _err;
 266
 267         if ((err = snd_ad1848_create(card, wssport[dev] + 4,
 268                                      xirq, xdma1,
 269                                      AD1848_HW_DETECT, &chip)) < 0)
 270                 goto _err;
 271         card->private_data = chip;
 272
 273         if ((err = snd_ad1848_pcm(chip, 0, NULL)) < 0) {
 274                 snd_printdd(PFX "error creating new ad1848 PCM device\n");
 275                 goto _err;
 276         }
 277         if ((err = snd_ad1848_mixer(chip)) < 0) {
 278                 snd_printdd(PFX "error creating new ad1848 mixer\n");
 279                 goto _err;
 280         }
 281         if ((err = snd_sgalaxy_mixer(chip)) < 0) {
 282                 snd_printdd(PFX "the mixer rewrite failed\n");
 283                 goto _err;
 284         }
 285
 286         strcpy(card->driver, "Sound Galaxy");
 287         strcpy(card->shortname, "Sound Galaxy");
 288         sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
 289                 wssport[dev], xirq, xdma1);
 290
 291         snd_card_set_dev(card, devptr);
 292
 293         if ((err = snd_card_register(card)) < 0)
 294                 goto _err;
 295
 296         dev_set_drvdata(devptr, card);
 297         return 0;
 298
 299  _err:
 300         snd_card_free(card);
 301         return err;
 302 }
 303
 304 static int __devexit snd_sgalaxy_remove(struct device *devptr, unsigned int dev)
 305 {
 306         snd_card_free(dev_get_drvdata(devptr));
 307         dev_set_drvdata(devptr, NULL);
 308         return 0;
 309 }
 310
 311 #ifdef CONFIG_PM
 312 static int snd_sgalaxy_suspend(struct device *pdev, unsigned int n,
 313                                pm_message_t state)
 314 {
 315         struct snd_card *card = dev_get_drvdata(pdev);
 316         struct snd_ad1848 *chip = card->private_data;
 317
 318         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 319         chip->suspend(chip);
 320         return 0;
 321 }
 322
 323 static int snd_sgalaxy_resume(struct device *pdev, unsigned int n)
 324 {
 325         struct snd_card *card = dev_get_drvdata(pdev);
 326         struct snd_ad1848 *chip = card->private_data;
 327
 328         chip->resume(chip);
 329         snd_ad1848_out(chip, SGALAXY_AUXC_LEFT, chip->image[SGALAXY_AUXC_LEFT]);
 330         snd_ad1848_out(chip, SGALAXY_AUXC_RIGHT, chip->image[SGALAXY_AUXC_RIGHT]);
 331
 332         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 333         return 0;
 334 }
 335 #endif
 336
 337 #define DEV_NAME "sgalaxy"
 338
 339 static struct isa_driver snd_sgalaxy_driver = {
 340         .match          = snd_sgalaxy_match,
 341         .probe          = snd_sgalaxy_probe,
 342         .remove         = __devexit_p(snd_sgalaxy_remove),
 343 #ifdef CONFIG_PM
 344         .suspend        = snd_sgalaxy_suspend,
 345         .resume         = snd_sgalaxy_resume,
 346 #endif
 347         .driver         = {
 348                 .name   = DEV_NAME
 349         },
 350 };
 351
 352 static int __init alsa_card_sgalaxy_init(void)
 353 {
 354         return isa_register_driver(&snd_sgalaxy_driver, SNDRV_CARDS);
 355 }
 356
 357 static void __exit alsa_card_sgalaxy_exit(void)
 358 {
 359         isa_unregister_driver(&snd_sgalaxy_driver);
 360 }
 361
 362 module_init(alsa_card_sgalaxy_init)
 363 module_exit(alsa_card_sgalaxy_exit)