release/src-rt-6.x.4708/linux/linux-2.6.36/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 <linux/init.h>
  25 #include <linux/err.h>
  26 #include <linux/isa.h>
  27 #include <linux/delay.h>
  28 #include <linux/time.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/moduleparam.h>
  31 #include <asm/dma.h>
  32 #include <sound/core.h>
  33 #include <sound/sb.h>
  34 #include <sound/wss.h>
  35 #include <sound/control.h>
  36 #define SNDRV_LEGACY_FIND_FREE_IRQ
  37 #define SNDRV_LEGACY_FIND_FREE_DMA
  38 #include <sound/initval.h>
  39
  40 MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
  41 MODULE_DESCRIPTION("Aztech Sound Galaxy");
  42 MODULE_LICENSE("GPL");
  43 MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
  44
  45 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  46 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  47 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  48 static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;   /* 0x220,0x240 */
  49 static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;  /* 0x530,0xe80,0xf40,0x604 */
  50 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 7,9,10,11 */
  51 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3 */
  52
  53 module_param_array(index, int, NULL, 0444);
  54 MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
  55 module_param_array(id, charp, NULL, 0444);
  56 MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
  57 module_param_array(sbport, long, NULL, 0444);
  58 MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
  59 module_param_array(wssport, long, NULL, 0444);
  60 MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
  61 module_param_array(irq, int, NULL, 0444);
  62 MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
  63 module_param_array(dma1, int, NULL, 0444);
  64 MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");
  65
  66 #define SGALAXY_AUXC_LEFT 18
  67 #define SGALAXY_AUXC_RIGHT 19
  68
  69 #define PFX     "sgalaxy: "
  70
  71 /*
  72
  73  */
  74
  75 #define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
  76
  77 /* from lowlevel/sb/sb.c - to avoid having to allocate a struct snd_sb for the */
  78 /* short time we actually need it.. */
  79
  80 static int snd_sgalaxy_sbdsp_reset(unsigned long port)
  81 {
  82         int i;
  83
  84         outb(1, SBP1(port, RESET));
  85         udelay(10);
  86         outb(0, SBP1(port, RESET));
  87         udelay(30);
  88         for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
  89         if (inb(SBP1(port, READ)) != 0xaa) {
  90                 snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
  91                 return -ENODEV;
  92         }
  93         return 0;
  94 }
  95
  96 static int __devinit snd_sgalaxy_sbdsp_command(unsigned long port,
  97                                                unsigned char val)
  98 {
  99         int i;
 100
 101         for (i = 10000; i; i--)
 102                 if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
 103                         outb(val, SBP1(port, COMMAND));
 104                         return 1;
 105                 }
 106
 107         return 0;
 108 }
 109
 110 static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id)
 111 {
 112         return IRQ_NONE;
 113 }
 114
 115 static int __devinit snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
 116 {
 117         static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1,
 118                                        0x10, 0x18, 0x20, -1, -1, -1, -1};
 119         static int dma_bits[] = {1, 2, 0, 3};
 120         int tmp, tmp1;
 121
 122         if ((tmp = inb(port + 3)) == 0xff)
 123         {
 124                 snd_printdd("I/O address dead (0x%lx)\n", port);
 125                 return 0;
 126         }
 127
 128         if ((tmp & 0x3f) != 0x04 &&
 129             (tmp & 0x3f) != 0x0f &&
 130             (tmp & 0x3f) != 0x00) {
 131                 snd_printdd("No WSS signature detected on port 0x%lx\n",
 132                             port + 3);
 133                 return 0;
 134         }
 135
 136
 137         /* initialize IRQ for WSS codec */
 138         tmp = interrupt_bits[irq % 16];
 139         if (tmp < 0)
 140                 return -EINVAL;
 141
 142         if (request_irq(irq, snd_sgalaxy_dummy_interrupt, IRQF_DISABLED, "sgalaxy", NULL)) {
 143                 snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
 144                 return -EIO;
 145         }
 146
 147         outb(tmp | 0x40, port);
 148         tmp1 = dma_bits[dma % 4];
 149         outb(tmp | tmp1, port);
 150
 151         free_irq(irq, NULL);
 152
 153         return 0;
 154 }
 155
 156 static int __devinit snd_sgalaxy_detect(int dev, int irq, int dma)
 157 {
 158
 159         /* switch to WSS mode */
 160         snd_sgalaxy_sbdsp_reset(sbport[dev]);
 161
 162         snd_sgalaxy_sbdsp_command(sbport[dev], 9);
 163         snd_sgalaxy_sbdsp_command(sbport[dev], 0);
 164
 165         udelay(400);
 166         return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
 167 }
 168
 169 static struct snd_kcontrol_new snd_sgalaxy_controls[] = {
 170 WSS_DOUBLE("Aux Playback Switch", 0,
 171                 SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
 172 WSS_DOUBLE("Aux Playback Volume", 0,
 173                 SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
 174 };
 175
 176 static int __devinit snd_sgalaxy_mixer(struct snd_wss *chip)
 177 {
 178         struct snd_card *card = chip->card;
 179         struct snd_ctl_elem_id id1, id2;
 180         unsigned int idx;
 181         int err;
 182
 183         memset(&id1, 0, sizeof(id1));
 184         memset(&id2, 0, sizeof(id2));
 185         id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 186         /* reassign AUX0 to LINE */
 187         strcpy(id1.name, "Aux Playback Switch");
 188         strcpy(id2.name, "Line Playback Switch");
 189         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 190                 return err;
 191         strcpy(id1.name, "Aux Playback Volume");
 192         strcpy(id2.name, "Line Playback Volume");
 193         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 194                 return err;
 195         /* reassign AUX1 to FM */
 196         strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
 197         strcpy(id2.name, "FM 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, "FM Playback Volume");
 202         if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 203                 return err;
 204         /* build AUX2 input */
 205         for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
 206                 err = snd_ctl_add(card,
 207                                 snd_ctl_new1(&snd_sgalaxy_controls[idx], chip));
 208                 if (err < 0)
 209                         return err;
 210         }
 211         return 0;
 212 }
 213
 214 static int __devinit snd_sgalaxy_match(struct device *devptr, unsigned int dev)
 215 {
 216         if (!enable[dev])
 217                 return 0;
 218         if (sbport[dev] == SNDRV_AUTO_PORT) {
 219                 snd_printk(KERN_ERR PFX "specify SB port\n");
 220                 return 0;
 221         }
 222         if (wssport[dev] == SNDRV_AUTO_PORT) {
 223                 snd_printk(KERN_ERR PFX "specify WSS port\n");
 224                 return 0;
 225         }
 226         return 1;
 227 }
 228
 229 static int __devinit snd_sgalaxy_probe(struct device *devptr, unsigned int dev)
 230 {
 231         static int possible_irqs[] = {7, 9, 10, 11, -1};
 232         static int possible_dmas[] = {1, 3, 0, -1};
 233         int err, xirq, xdma1;
 234         struct snd_card *card;
 235         struct snd_wss *chip;
 236
 237         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
 238         if (err < 0)
 239                 return err;
 240
 241         xirq = irq[dev];
 242         if (xirq == SNDRV_AUTO_IRQ) {
 243                 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
 244                         snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
 245                         err = -EBUSY;
 246                         goto _err;
 247                 }
 248         }
 249         xdma1 = dma1[dev];
 250         if (xdma1 == SNDRV_AUTO_DMA) {
 251                 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
 252                         snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
 253                         err = -EBUSY;
 254                         goto _err;
 255                 }
 256         }
 257
 258         if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0)
 259                 goto _err;
 260
 261         err = snd_wss_create(card, wssport[dev] + 4, -1,
 262                              xirq, xdma1, -1,
 263                              WSS_HW_DETECT, 0, &chip);
 264         if (err < 0)
 265                 goto _err;
 266         card->private_data = chip;
 267
 268         err = snd_wss_pcm(chip, 0, NULL);
 269         if (err < 0) {
 270                 snd_printdd(PFX "error creating new WSS PCM device\n");
 271                 goto _err;
 272         }
 273         err = snd_wss_mixer(chip);
 274         if (err < 0) {
 275                 snd_printdd(PFX "error creating new WSS mixer\n");
 276                 goto _err;
 277         }
 278         if ((err = snd_sgalaxy_mixer(chip)) < 0) {
 279                 snd_printdd(PFX "the mixer rewrite failed\n");
 280                 goto _err;
 281         }
 282
 283         strcpy(card->driver, "Sound Galaxy");
 284         strcpy(card->shortname, "Sound Galaxy");
 285         sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
 286                 wssport[dev], xirq, xdma1);
 287
 288         snd_card_set_dev(card, devptr);
 289
 290         if ((err = snd_card_register(card)) < 0)
 291                 goto _err;
 292
 293         dev_set_drvdata(devptr, card);
 294         return 0;
 295
 296  _err:
 297         snd_card_free(card);
 298         return err;
 299 }
 300
 301 static int __devexit snd_sgalaxy_remove(struct device *devptr, unsigned int dev)
 302 {
 303         snd_card_free(dev_get_drvdata(devptr));
 304         dev_set_drvdata(devptr, NULL);
 305         return 0;
 306 }
 307
 308 #ifdef CONFIG_PM
 309 static int snd_sgalaxy_suspend(struct device *pdev, unsigned int n,
 310                                pm_message_t state)
 311 {
 312         struct snd_card *card = dev_get_drvdata(pdev);
 313         struct snd_wss *chip = card->private_data;
 314
 315         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 316         chip->suspend(chip);
 317         return 0;
 318 }
 319
 320 static int snd_sgalaxy_resume(struct device *pdev, unsigned int n)
 321 {
 322         struct snd_card *card = dev_get_drvdata(pdev);
 323         struct snd_wss *chip = card->private_data;
 324
 325         chip->resume(chip);
 326         snd_wss_out(chip, SGALAXY_AUXC_LEFT, chip->image[SGALAXY_AUXC_LEFT]);
 327         snd_wss_out(chip, SGALAXY_AUXC_RIGHT, chip->image[SGALAXY_AUXC_RIGHT]);
 328
 329         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 330         return 0;
 331 }
 332 #endif
 333
 334 #define DEV_NAME "sgalaxy"
 335
 336 static struct isa_driver snd_sgalaxy_driver = {
 337         .match          = snd_sgalaxy_match,
 338         .probe          = snd_sgalaxy_probe,
 339         .remove         = __devexit_p(snd_sgalaxy_remove),
 340 #ifdef CONFIG_PM
 341         .suspend        = snd_sgalaxy_suspend,
 342         .resume         = snd_sgalaxy_resume,
 343 #endif
 344         .driver         = {
 345                 .name   = DEV_NAME
 346         },
 347 };
 348
 349 static int __init alsa_card_sgalaxy_init(void)
 350 {
 351         return isa_register_driver(&snd_sgalaxy_driver, SNDRV_CARDS);
 352 }
 353
 354 static void __exit alsa_card_sgalaxy_exit(void)
 355 {
 356         isa_unregister_driver(&snd_sgalaxy_driver);
 357 }
 358
 359 module_init(alsa_card_sgalaxy_init)
 360 module_exit(alsa_card_sgalaxy_exit)