sound/isa/ad1848/ad1848_lib.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   3  *  Routines for control of AD1848/AD1847/CS4248
   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 #define SNDRV_MAIN_OBJECT_FILE
  23 #include <sound/driver.h>
  24 #include <linux/delay.h>
  25 #include <linux/init.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/slab.h>
  28 #include <linux/ioport.h>
  29 #include <sound/core.h>
  30 #include <sound/ad1848.h>
  31 #include <sound/control.h>
  32 #include <sound/pcm_params.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/dma.h>
  36
  37 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  38 MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
  39 MODULE_LICENSE("GPL");
  40
  41 #if 0
  42 #define SNDRV_DEBUG_MCE
  43 #endif
  44
  45 /*
  46  *  Some variables
  47  */
  48
  49 static unsigned char freq_bits[14] = {
  50         /* 5510 */      0x00 | AD1848_XTAL2,
  51         /* 6620 */      0x0E | AD1848_XTAL2,
  52         /* 8000 */      0x00 | AD1848_XTAL1,
  53         /* 9600 */      0x0E | AD1848_XTAL1,
  54         /* 11025 */     0x02 | AD1848_XTAL2,
  55         /* 16000 */     0x02 | AD1848_XTAL1,
  56         /* 18900 */     0x04 | AD1848_XTAL2,
  57         /* 22050 */     0x06 | AD1848_XTAL2,
  58         /* 27042 */     0x04 | AD1848_XTAL1,
  59         /* 32000 */     0x06 | AD1848_XTAL1,
  60         /* 33075 */     0x0C | AD1848_XTAL2,
  61         /* 37800 */     0x08 | AD1848_XTAL2,
  62         /* 44100 */     0x0A | AD1848_XTAL2,
  63         /* 48000 */     0x0C | AD1848_XTAL1
  64 };
  65
  66 static unsigned int rates[14] = {
  67         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
  68         27042, 32000, 33075, 37800, 44100, 48000
  69 };
  70
  71 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
  72         .count = 14,
  73         .list = rates,
  74         .mask = 0,
  75 };
  76
  77 static unsigned char snd_ad1848_original_image[16] =
  78 {
  79         0x00,                   /* 00 - lic */
  80         0x00,                   /* 01 - ric */
  81         0x9f,                   /* 02 - la1ic */
  82         0x9f,                   /* 03 - ra1ic */
  83         0x9f,                   /* 04 - la2ic */
  84         0x9f,                   /* 05 - ra2ic */
  85         0xbf,                   /* 06 - loc */
  86         0xbf,                   /* 07 - roc */
  87         0x20,                   /* 08 - dfr */
  88         AD1848_AUTOCALIB,       /* 09 - ic */
  89         0x00,                   /* 0a - pc */
  90         0x00,                   /* 0b - ti */
  91         0x00,                   /* 0c - mi */
  92         0x00,                   /* 0d - lbc */
  93         0x00,                   /* 0e - dru */
  94         0x00,                   /* 0f - drl */
  95 };
  96
  97 /*
  98  *  Basic I/O functions
  99  */
 100
 101 void snd_ad1848_out(struct snd_ad1848 *chip,
 102                            unsigned char reg,
 103                            unsigned char value)
 104 {
 105         int timeout;
 106
 107         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 108                 udelay(100);
 109 #ifdef CONFIG_SND_DEBUG
 110         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 111                 snd_printk(KERN_WARNING "auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 112 #endif
 113         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 114         outb(chip->image[reg] = value, AD1848P(chip, REG));
 115         mb();
 116 #if 0
 117         printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
 118 #endif
 119 }
 120
 121 static void snd_ad1848_dout(struct snd_ad1848 *chip,
 122                             unsigned char reg, unsigned char value)
 123 {
 124         int timeout;
 125
 126         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 127                 udelay(100);
 128         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 129         outb(value, AD1848P(chip, REG));
 130         mb();
 131 }
 132
 133 static unsigned char snd_ad1848_in(struct snd_ad1848 *chip, unsigned char reg)
 134 {
 135         int timeout;
 136
 137         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 138                 udelay(100);
 139 #ifdef CONFIG_SND_DEBUG
 140         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 141                 snd_printk(KERN_WARNING "auto calibration time out - reg = 0x%x\n", reg);
 142 #endif
 143         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 144         mb();
 145         return inb(AD1848P(chip, REG));
 146 }
 147
 148 #if 0
 149
 150 static void snd_ad1848_debug(struct snd_ad1848 *chip)
 151 {
 152         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
 153         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
 154         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
 155         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
 156         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
 157         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
 158         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
 159         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
 160         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
 161         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
 162         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
 163         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
 164         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
 165         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
 166         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
 167         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
 168         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
 169         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
 170 }
 171
 172 #endif
 173
 174 /*
 175  *  AD1848 detection / MCE routines
 176  */
 177
 178 static void snd_ad1848_mce_up(struct snd_ad1848 *chip)
 179 {
 180         unsigned long flags;
 181         int timeout;
 182
 183         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 184                 udelay(100);
 185 #ifdef CONFIG_SND_DEBUG
 186         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 187                 snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
 188 #endif
 189         spin_lock_irqsave(&chip->reg_lock, flags);
 190         chip->mce_bit |= AD1848_MCE;
 191         timeout = inb(AD1848P(chip, REGSEL));
 192         if (timeout == 0x80)
 193                 snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 194         if (!(timeout & AD1848_MCE))
 195                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
 196         spin_unlock_irqrestore(&chip->reg_lock, flags);
 197 }
 198
 199 static void snd_ad1848_mce_down(struct snd_ad1848 *chip)
 200 {
 201         unsigned long flags;
 202         int timeout;
 203         signed long time;
 204
 205         spin_lock_irqsave(&chip->reg_lock, flags);
 206         for (timeout = 5; timeout > 0; timeout--)
 207                 inb(AD1848P(chip, REGSEL));
 208         /* end of cleanup sequence */
 209         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 210                 udelay(100);
 211 #if 0
 212         printk("(1) timeout = %i\n", timeout);
 213 #endif
 214 #ifdef CONFIG_SND_DEBUG
 215         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 216                 snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
 217 #endif
 218         chip->mce_bit &= ~AD1848_MCE;
 219         timeout = inb(AD1848P(chip, REGSEL));
 220         outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
 221         if (timeout == 0x80)
 222                 snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 223         if ((timeout & AD1848_MCE) == 0) {
 224                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 225                 return;
 226         }
 227         /* calibration process */
 228
 229         for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
 230         if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
 231                 snd_printd("mce_down - auto calibration time out (1)\n");
 232                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 233                 return;
 234         }
 235 #if 0
 236         printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
 237 #endif
 238         time = HZ / 4;
 239         while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
 240                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 241                 if (time <= 0) {
 242                         snd_printk(KERN_ERR "mce_down - auto calibration time out (2)\n");
 243                         return;
 244                 }
 245                 time = schedule_timeout_interruptible(time);
 246                 spin_lock_irqsave(&chip->reg_lock, flags);
 247         }
 248 #if 0
 249         printk("(3) jiffies = %li\n", jiffies);
 250 #endif
 251         time = HZ / 10;
 252         while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
 253                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 254                 if (time <= 0) {
 255                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
 256                         return;
 257                 }
 258                 time = schedule_timeout_interruptible(time);
 259                 spin_lock_irqsave(&chip->reg_lock, flags);
 260         }
 261         spin_unlock_irqrestore(&chip->reg_lock, flags);
 262 #if 0
 263         printk("(4) jiffies = %li\n", jiffies);
 264         snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
 265 #endif
 266 }
 267
 268 static unsigned int snd_ad1848_get_count(unsigned char format,
 269                                          unsigned int size)
 270 {
 271         switch (format & 0xe0) {
 272         case AD1848_LINEAR_16:
 273                 size >>= 1;
 274                 break;
 275         }
 276         if (format & AD1848_STEREO)
 277                 size >>= 1;
 278         return size;
 279 }
 280
 281 static int snd_ad1848_trigger(struct snd_ad1848 *chip, unsigned char what,
 282                               int channel, int cmd)
 283 {
 284         int result = 0;
 285
 286 #if 0
 287         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
 288 #endif
 289         spin_lock(&chip->reg_lock);
 290         if (cmd == SNDRV_PCM_TRIGGER_START) {
 291                 if (chip->image[AD1848_IFACE_CTRL] & what) {
 292                         spin_unlock(&chip->reg_lock);
 293                         return 0;
 294                 }
 295                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
 296                 chip->mode |= AD1848_MODE_RUNNING;
 297         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 298                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
 299                         spin_unlock(&chip->reg_lock);
 300                         return 0;
 301                 }
 302                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
 303                 chip->mode &= ~AD1848_MODE_RUNNING;
 304         } else {
 305                 result = -EINVAL;
 306         }
 307         spin_unlock(&chip->reg_lock);
 308         return result;
 309 }
 310
 311 /*
 312  *  CODEC I/O
 313  */
 314
 315 static unsigned char snd_ad1848_get_rate(unsigned int rate)
 316 {
 317         int i;
 318
 319         for (i = 0; i < 14; i++)
 320                 if (rate == rates[i])
 321                         return freq_bits[i];
 322         snd_BUG();
 323         return freq_bits[13];
 324 }
 325
 326 static int snd_ad1848_ioctl(struct snd_pcm_substream *substream,
 327                             unsigned int cmd, void *arg)
 328 {
 329         return snd_pcm_lib_ioctl(substream, cmd, arg);
 330 }
 331
 332 static unsigned char snd_ad1848_get_format(int format, int channels)
 333 {
 334         unsigned char rformat;
 335
 336         rformat = AD1848_LINEAR_8;
 337         switch (format) {
 338         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
 339         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
 340         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
 341         }
 342         if (channels > 1)
 343                 rformat |= AD1848_STEREO;
 344 #if 0
 345         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 346 #endif
 347         return rformat;
 348 }
 349
 350 static void snd_ad1848_calibrate_mute(struct snd_ad1848 *chip, int mute)
 351 {
 352         unsigned long flags;
 353
 354         mute = mute ? 1 : 0;
 355         spin_lock_irqsave(&chip->reg_lock, flags);
 356         if (chip->calibrate_mute == mute) {
 357                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 358                 return;
 359         }
 360         if (!mute) {
 361                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
 362                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
 363         }
 364         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
 365         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
 366         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
 367         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
 368         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
 369         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
 370         chip->calibrate_mute = mute;
 371         spin_unlock_irqrestore(&chip->reg_lock, flags);
 372 }
 373
 374 static void snd_ad1848_set_data_format(struct snd_ad1848 *chip, struct snd_pcm_hw_params *hw_params)
 375 {
 376         if (hw_params == NULL) {
 377                 chip->image[AD1848_DATA_FORMAT] = 0x20;
 378         } else {
 379                 chip->image[AD1848_DATA_FORMAT] =
 380                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
 381                     snd_ad1848_get_rate(params_rate(hw_params));
 382         }
 383         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
 384 }
 385
 386 static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
 387 {
 388         unsigned long flags;
 389
 390         mutex_lock(&chip->open_mutex);
 391         if (chip->mode & AD1848_MODE_OPEN) {
 392                 mutex_unlock(&chip->open_mutex);
 393                 return -EAGAIN;
 394         }
 395         snd_ad1848_mce_down(chip);
 396
 397 #ifdef SNDRV_DEBUG_MCE
 398         snd_printk("open: (1)\n");
 399 #endif
 400         snd_ad1848_mce_up(chip);
 401         spin_lock_irqsave(&chip->reg_lock, flags);
 402         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 403                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
 404                              AD1848_CALIB_MODE);
 405         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
 406         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 407         spin_unlock_irqrestore(&chip->reg_lock, flags);
 408         snd_ad1848_mce_down(chip);
 409
 410 #ifdef SNDRV_DEBUG_MCE
 411         snd_printk("open: (2)\n");
 412 #endif
 413
 414         snd_ad1848_set_data_format(chip, NULL);
 415
 416         snd_ad1848_mce_up(chip);
 417         spin_lock_irqsave(&chip->reg_lock, flags);
 418         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 419         spin_unlock_irqrestore(&chip->reg_lock, flags);
 420         snd_ad1848_mce_down(chip);
 421
 422 #ifdef SNDRV_DEBUG_MCE
 423         snd_printk("open: (3)\n");
 424 #endif
 425
 426         /* ok. now enable and ack CODEC IRQ */
 427         spin_lock_irqsave(&chip->reg_lock, flags);
 428         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 429         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 430         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
 431         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 432         spin_unlock_irqrestore(&chip->reg_lock, flags);
 433
 434         chip->mode = mode;
 435         mutex_unlock(&chip->open_mutex);
 436
 437         return 0;
 438 }
 439
 440 static void snd_ad1848_close(struct snd_ad1848 *chip)
 441 {
 442         unsigned long flags;
 443
 444         mutex_lock(&chip->open_mutex);
 445         if (!chip->mode) {
 446                 mutex_unlock(&chip->open_mutex);
 447                 return;
 448         }
 449         /* disable IRQ */
 450         spin_lock_irqsave(&chip->reg_lock, flags);
 451         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 452         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 453         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
 454         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 455         spin_unlock_irqrestore(&chip->reg_lock, flags);
 456
 457         /* now disable capture & playback */
 458
 459         snd_ad1848_mce_up(chip);
 460         spin_lock_irqsave(&chip->reg_lock, flags);
 461         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 462                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 463         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 464         spin_unlock_irqrestore(&chip->reg_lock, flags);
 465         snd_ad1848_mce_down(chip);
 466
 467         /* clear IRQ again */
 468         spin_lock_irqsave(&chip->reg_lock, flags);
 469         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 470         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 471         spin_unlock_irqrestore(&chip->reg_lock, flags);
 472
 473         chip->mode = 0;
 474         mutex_unlock(&chip->open_mutex);
 475 }
 476
 477 /*
 478  *  ok.. exported functions..
 479  */
 480
 481 static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
 482                                        int cmd)
 483 {
 484         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 485         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
 486 }
 487
 488 static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
 489                                       int cmd)
 490 {
 491         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 492         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
 493 }
 494
 495 static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
 496                                          struct snd_pcm_hw_params *hw_params)
 497 {
 498         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 499         unsigned long flags;
 500         int err;
 501
 502         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 503                 return err;
 504         snd_ad1848_calibrate_mute(chip, 1);
 505         snd_ad1848_set_data_format(chip, hw_params);
 506         snd_ad1848_mce_up(chip);
 507         spin_lock_irqsave(&chip->reg_lock, flags);
 508         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 509         spin_unlock_irqrestore(&chip->reg_lock, flags);
 510         snd_ad1848_mce_down(chip);
 511         snd_ad1848_calibrate_mute(chip, 0);
 512         return 0;
 513 }
 514
 515 static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
 516 {
 517         return snd_pcm_lib_free_pages(substream);
 518 }
 519
 520 static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
 521 {
 522         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 523         struct snd_pcm_runtime *runtime = substream->runtime;
 524         unsigned long flags;
 525         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 526         unsigned int count = snd_pcm_lib_period_bytes(substream);
 527
 528         chip->dma_size = size;
 529         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
 530         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 531         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 532         spin_lock_irqsave(&chip->reg_lock, flags);
 533         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 534         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 535         spin_unlock_irqrestore(&chip->reg_lock, flags);
 536         return 0;
 537 }
 538
 539 static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
 540                                         struct snd_pcm_hw_params *hw_params)
 541 {
 542         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 543         unsigned long flags;
 544         int err;
 545
 546         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 547                 return err;
 548         snd_ad1848_calibrate_mute(chip, 1);
 549         snd_ad1848_set_data_format(chip, hw_params);
 550         snd_ad1848_mce_up(chip);
 551         spin_lock_irqsave(&chip->reg_lock, flags);
 552         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 553         spin_unlock_irqrestore(&chip->reg_lock, flags);
 554         snd_ad1848_mce_down(chip);
 555         snd_ad1848_calibrate_mute(chip, 0);
 556         return 0;
 557 }
 558
 559 static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
 560 {
 561         return snd_pcm_lib_free_pages(substream);
 562 }
 563
 564 static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
 565 {
 566         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 567         struct snd_pcm_runtime *runtime = substream->runtime;
 568         unsigned long flags;
 569         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 570         unsigned int count = snd_pcm_lib_period_bytes(substream);
 571
 572         chip->dma_size = size;
 573         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 574         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 575         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 576         spin_lock_irqsave(&chip->reg_lock, flags);
 577         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 578         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 579         spin_unlock_irqrestore(&chip->reg_lock, flags);
 580         return 0;
 581 }
 582
 583 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 584 {
 585         struct snd_ad1848 *chip = dev_id;
 586
 587         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
 588             (chip->mode & AD1848_MODE_RUNNING))
 589                 snd_pcm_period_elapsed(chip->playback_substream);
 590         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
 591             (chip->mode & AD1848_MODE_RUNNING))
 592                 snd_pcm_period_elapsed(chip->capture_substream);
 593         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
 594         return IRQ_HANDLED;
 595 }
 596
 597 static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
 598 {
 599         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 600         size_t ptr;
 601
 602         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
 603                 return 0;
 604         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 605         return bytes_to_frames(substream->runtime, ptr);
 606 }
 607
 608 static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
 609 {
 610         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 611         size_t ptr;
 612
 613         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
 614                 return 0;
 615         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 616         return bytes_to_frames(substream->runtime, ptr);
 617 }
 618
 619 /*
 620
 621  */
 622
 623 static void snd_ad1848_thinkpad_twiddle(struct snd_ad1848 *chip, int on) {
 624
 625         int tmp;
 626
 627         if (!chip->thinkpad_flag) return;
 628
 629         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
 630         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
 631
 632         if (on)
 633                 /* turn it on */
 634                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
 635         else
 636                 /* turn it off */
 637                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
 638
 639         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
 640
 641 }
 642
 643 #ifdef CONFIG_PM
 644 static void snd_ad1848_suspend(struct snd_ad1848 *chip)
 645 {
 646         snd_pcm_suspend_all(chip->pcm);
 647         if (chip->thinkpad_flag)
 648                 snd_ad1848_thinkpad_twiddle(chip, 0);
 649 }
 650
 651 static void snd_ad1848_resume(struct snd_ad1848 *chip)
 652 {
 653         int i;
 654
 655         if (chip->thinkpad_flag)
 656                 snd_ad1848_thinkpad_twiddle(chip, 1);
 657
 658         /* clear any pendings IRQ */
 659         inb(AD1848P(chip, STATUS));
 660         outb(0, AD1848P(chip, STATUS));
 661         mb();
 662
 663         snd_ad1848_mce_down(chip);
 664         for (i = 0; i < 16; i++)
 665                 snd_ad1848_out(chip, i, chip->image[i]);
 666         snd_ad1848_mce_up(chip);
 667         snd_ad1848_mce_down(chip);
 668 }
 669 #endif /* CONFIG_PM */
 670
 671 static int snd_ad1848_probe(struct snd_ad1848 * chip)
 672 {
 673         unsigned long flags;
 674         int i, id, rev, ad1847;
 675         unsigned char *ptr;
 676
 677 #if 0
 678         snd_ad1848_debug(chip);
 679 #endif
 680         id = ad1847 = 0;
 681         for (i = 0; i < 1000; i++) {
 682                 mb();
 683                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 684                         udelay(500);
 685                 else {
 686                         spin_lock_irqsave(&chip->reg_lock, flags);
 687                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 688                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
 689                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
 690                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
 691                         if (rev == 0x65) {
 692                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 693                                 id = 1;
 694                                 ad1847 = 1;
 695                                 break;
 696                         }
 697                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
 698                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 699                                 id = 1;
 700                                 break;
 701                         }
 702                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 703                 }
 704         }
 705         if (id != 1)
 706                 return -ENODEV; /* no valid device found */
 707         if (chip->hardware == AD1848_HW_DETECT) {
 708                 if (ad1847) {
 709                         chip->hardware = AD1848_HW_AD1847;
 710                 } else {
 711                         chip->hardware = AD1848_HW_AD1848;
 712                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
 713                         if (rev & 0x80) {
 714                                 chip->hardware = AD1848_HW_CS4248;
 715                         } else if ((rev & 0x0f) == 0x0a) {
 716                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
 717                                 for (i = 0; i < 16; ++i) {
 718                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
 719                                                 chip->hardware = AD1848_HW_CMI8330;
 720                                                 break;
 721                                         }
 722                                 }
 723                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 724                         }
 725                 }
 726         }
 727         spin_lock_irqsave(&chip->reg_lock, flags);
 728         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
 729         outb(0, AD1848P(chip, STATUS));
 730         mb();
 731         spin_unlock_irqrestore(&chip->reg_lock, flags);
 732
 733         chip->image[AD1848_MISC_INFO] = 0x00;
 734         chip->image[AD1848_IFACE_CTRL] =
 735             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
 736         ptr = (unsigned char *) &chip->image;
 737         snd_ad1848_mce_down(chip);
 738         spin_lock_irqsave(&chip->reg_lock, flags);
 739         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
 740                 snd_ad1848_out(chip, i, *ptr++);
 741         spin_unlock_irqrestore(&chip->reg_lock, flags);
 742         snd_ad1848_mce_up(chip);
 743         snd_ad1848_mce_down(chip);
 744         return 0;               /* all things are ok.. */
 745 }
 746
 747 /*
 748
 749  */
 750
 751 static struct snd_pcm_hardware snd_ad1848_playback =
 752 {
 753         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 754                                  SNDRV_PCM_INFO_MMAP_VALID),
 755         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 756                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 757         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 758         .rate_min =             5510,
 759         .rate_max =             48000,
 760         .channels_min =         1,
 761         .channels_max =         2,
 762         .buffer_bytes_max =     (128*1024),
 763         .period_bytes_min =     64,
 764         .period_bytes_max =     (128*1024),
 765         .periods_min =          1,
 766         .periods_max =          1024,
 767         .fifo_size =            0,
 768 };
 769
 770 static struct snd_pcm_hardware snd_ad1848_capture =
 771 {
 772         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 773                                  SNDRV_PCM_INFO_MMAP_VALID),
 774         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 775                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 776         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 777         .rate_min =             5510,
 778         .rate_max =             48000,
 779         .channels_min =         1,
 780         .channels_max =         2,
 781         .buffer_bytes_max =     (128*1024),
 782         .period_bytes_min =     64,
 783         .period_bytes_max =     (128*1024),
 784         .periods_min =          1,
 785         .periods_max =          1024,
 786         .fifo_size =            0,
 787 };
 788
 789 /*
 790
 791  */
 792
 793 static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
 794 {
 795         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 796         struct snd_pcm_runtime *runtime = substream->runtime;
 797         int err;
 798
 799         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
 800                 return err;
 801         chip->playback_substream = substream;
 802         runtime->hw = snd_ad1848_playback;
 803         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 804         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 805         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 806         return 0;
 807 }
 808
 809 static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
 810 {
 811         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 812         struct snd_pcm_runtime *runtime = substream->runtime;
 813         int err;
 814
 815         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
 816                 return err;
 817         chip->capture_substream = substream;
 818         runtime->hw = snd_ad1848_capture;
 819         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 820         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 821         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 822         return 0;
 823 }
 824
 825 static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
 826 {
 827         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 828
 829         chip->mode &= ~AD1848_MODE_PLAY;
 830         chip->playback_substream = NULL;
 831         snd_ad1848_close(chip);
 832         return 0;
 833 }
 834
 835 static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
 836 {
 837         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 838
 839         chip->mode &= ~AD1848_MODE_CAPTURE;
 840         chip->capture_substream = NULL;
 841         snd_ad1848_close(chip);
 842         return 0;
 843 }
 844
 845 static int snd_ad1848_free(struct snd_ad1848 *chip)
 846 {
 847         release_and_free_resource(chip->res_port);
 848         if (chip->irq >= 0)
 849                 free_irq(chip->irq, (void *) chip);
 850         if (chip->dma >= 0) {
 851                 snd_dma_disable(chip->dma);
 852                 free_dma(chip->dma);
 853         }
 854         kfree(chip);
 855         return 0;
 856 }
 857
 858 static int snd_ad1848_dev_free(struct snd_device *device)
 859 {
 860         struct snd_ad1848 *chip = device->device_data;
 861         return snd_ad1848_free(chip);
 862 }
 863
 864 static const char *snd_ad1848_chip_id(struct snd_ad1848 *chip)
 865 {
 866         switch (chip->hardware) {
 867         case AD1848_HW_AD1847:  return "AD1847";
 868         case AD1848_HW_AD1848:  return "AD1848";
 869         case AD1848_HW_CS4248:  return "CS4248";
 870         case AD1848_HW_CMI8330: return "CMI8330/C3D";
 871         default:                return "???";
 872         }
 873 }
 874
 875 int snd_ad1848_create(struct snd_card *card,
 876                       unsigned long port,
 877                       int irq, int dma,
 878                       unsigned short hardware,
 879                       struct snd_ad1848 ** rchip)
 880 {
 881         static struct snd_device_ops ops = {
 882                 .dev_free =     snd_ad1848_dev_free,
 883         };
 884         struct snd_ad1848 *chip;
 885         int err;
 886
 887         *rchip = NULL;
 888         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 889         if (chip == NULL)
 890                 return -ENOMEM;
 891         spin_lock_init(&chip->reg_lock);
 892         mutex_init(&chip->open_mutex);
 893         chip->card = card;
 894         chip->port = port;
 895         chip->irq = -1;
 896         chip->dma = -1;
 897         chip->hardware = hardware;
 898         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
 899
 900         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
 901                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
 902                 snd_ad1848_free(chip);
 903                 return -EBUSY;
 904         }
 905         if (request_irq(irq, snd_ad1848_interrupt, SA_INTERRUPT, "AD1848", (void *) chip)) {
 906                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
 907                 snd_ad1848_free(chip);
 908                 return -EBUSY;
 909         }
 910         chip->irq = irq;
 911         if (request_dma(dma, "AD1848")) {
 912                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
 913                 snd_ad1848_free(chip);
 914                 return -EBUSY;
 915         }
 916         chip->dma = dma;
 917
 918         if (hardware == AD1848_HW_THINKPAD) {
 919                 chip->thinkpad_flag = 1;
 920                 chip->hardware = AD1848_HW_DETECT; /* reset */
 921                 snd_ad1848_thinkpad_twiddle(chip, 1);
 922         }
 923
 924         if (snd_ad1848_probe(chip) < 0) {
 925                 snd_ad1848_free(chip);
 926                 return -ENODEV;
 927         }
 928
 929         /* Register device */
 930         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 931                 snd_ad1848_free(chip);
 932                 return err;
 933         }
 934
 935 #ifdef CONFIG_PM
 936         chip->suspend = snd_ad1848_suspend;
 937         chip->resume = snd_ad1848_resume;
 938 #endif
 939
 940         *rchip = chip;
 941         return 0;
 942 }
 943
 944 static struct snd_pcm_ops snd_ad1848_playback_ops = {
 945         .open =         snd_ad1848_playback_open,
 946         .close =        snd_ad1848_playback_close,
 947         .ioctl =        snd_ad1848_ioctl,
 948         .hw_params =    snd_ad1848_playback_hw_params,
 949         .hw_free =      snd_ad1848_playback_hw_free,
 950         .prepare =      snd_ad1848_playback_prepare,
 951         .trigger =      snd_ad1848_playback_trigger,
 952         .pointer =      snd_ad1848_playback_pointer,
 953 };
 954
 955 static struct snd_pcm_ops snd_ad1848_capture_ops = {
 956         .open =         snd_ad1848_capture_open,
 957         .close =        snd_ad1848_capture_close,
 958         .ioctl =        snd_ad1848_ioctl,
 959         .hw_params =    snd_ad1848_capture_hw_params,
 960         .hw_free =      snd_ad1848_capture_hw_free,
 961         .prepare =      snd_ad1848_capture_prepare,
 962         .trigger =      snd_ad1848_capture_trigger,
 963         .pointer =      snd_ad1848_capture_pointer,
 964 };
 965
 966 int snd_ad1848_pcm(struct snd_ad1848 *chip, int device, struct snd_pcm **rpcm)
 967 {
 968         struct snd_pcm *pcm;
 969         int err;
 970
 971         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
 972                 return err;
 973
 974         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
 975         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
 976
 977         pcm->private_data = chip;
 978         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 979         strcpy(pcm->name, snd_ad1848_chip_id(chip));
 980
 981         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 982                                               snd_dma_isa_data(),
 983                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
 984
 985         chip->pcm = pcm;
 986         if (rpcm)
 987                 *rpcm = pcm;
 988         return 0;
 989 }
 990
 991 const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
 992 {
 993         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 994                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
 995 }
 996
 997 /*
 998  *  MIXER part
 999  */
1000
1001 static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1002 {
1003         static char *texts[4] = {
1004                 "Line", "Aux", "Mic", "Mix"
1005         };
1006
1007         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1008         uinfo->count = 2;
1009         uinfo->value.enumerated.items = 4;
1010         if (uinfo->value.enumerated.item > 3)
1011                 uinfo->value.enumerated.item = 3;
1012         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1013         return 0;
1014 }
1015
1016 static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1017 {
1018         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1019         unsigned long flags;
1020
1021         spin_lock_irqsave(&chip->reg_lock, flags);
1022         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1023         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1024         spin_unlock_irqrestore(&chip->reg_lock, flags);
1025         return 0;
1026 }
1027
1028 static int snd_ad1848_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1029 {
1030         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1031         unsigned long flags;
1032         unsigned short left, right;
1033         int change;
1034
1035         if (ucontrol->value.enumerated.item[0] > 3 ||
1036             ucontrol->value.enumerated.item[1] > 3)
1037                 return -EINVAL;
1038         left = ucontrol->value.enumerated.item[0] << 6;
1039         right = ucontrol->value.enumerated.item[1] << 6;
1040         spin_lock_irqsave(&chip->reg_lock, flags);
1041         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1042         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1043         change = left != chip->image[AD1848_LEFT_INPUT] ||
1044                  right != chip->image[AD1848_RIGHT_INPUT];
1045         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1046         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1047         spin_unlock_irqrestore(&chip->reg_lock, flags);
1048         return change;
1049 }
1050
1051 static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1052 {
1053         int mask = (kcontrol->private_value >> 16) & 0xff;
1054
1055         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1056         uinfo->count = 1;
1057         uinfo->value.integer.min = 0;
1058         uinfo->value.integer.max = mask;
1059         return 0;
1060 }
1061
1062 static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1063 {
1064         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1065         unsigned long flags;
1066         int reg = kcontrol->private_value & 0xff;
1067         int shift = (kcontrol->private_value >> 8) & 0xff;
1068         int mask = (kcontrol->private_value >> 16) & 0xff;
1069         int invert = (kcontrol->private_value >> 24) & 0xff;
1070
1071         spin_lock_irqsave(&chip->reg_lock, flags);
1072         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1073         spin_unlock_irqrestore(&chip->reg_lock, flags);
1074         if (invert)
1075                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1076         return 0;
1077 }
1078
1079 static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1080 {
1081         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1082         unsigned long flags;
1083         int reg = kcontrol->private_value & 0xff;
1084         int shift = (kcontrol->private_value >> 8) & 0xff;
1085         int mask = (kcontrol->private_value >> 16) & 0xff;
1086         int invert = (kcontrol->private_value >> 24) & 0xff;
1087         int change;
1088         unsigned short val;
1089
1090         val = (ucontrol->value.integer.value[0] & mask);
1091         if (invert)
1092                 val = mask - val;
1093         val <<= shift;
1094         spin_lock_irqsave(&chip->reg_lock, flags);
1095         val = (chip->image[reg] & ~(mask << shift)) | val;
1096         change = val != chip->image[reg];
1097         snd_ad1848_out(chip, reg, val);
1098         spin_unlock_irqrestore(&chip->reg_lock, flags);
1099         return change;
1100 }
1101
1102 static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1103 {
1104         int mask = (kcontrol->private_value >> 24) & 0xff;
1105
1106         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1107         uinfo->count = 2;
1108         uinfo->value.integer.min = 0;
1109         uinfo->value.integer.max = mask;
1110         return 0;
1111 }
1112
1113 static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1114 {
1115         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1116         unsigned long flags;
1117         int left_reg = kcontrol->private_value & 0xff;
1118         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1119         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1120         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1121         int mask = (kcontrol->private_value >> 24) & 0xff;
1122         int invert = (kcontrol->private_value >> 22) & 1;
1123
1124         spin_lock_irqsave(&chip->reg_lock, flags);
1125         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1126         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1127         spin_unlock_irqrestore(&chip->reg_lock, flags);
1128         if (invert) {
1129                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1130                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1131         }
1132         return 0;
1133 }
1134
1135 static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1136 {
1137         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1138         unsigned long flags;
1139         int left_reg = kcontrol->private_value & 0xff;
1140         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1141         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1142         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1143         int mask = (kcontrol->private_value >> 24) & 0xff;
1144         int invert = (kcontrol->private_value >> 22) & 1;
1145         int change;
1146         unsigned short val1, val2;
1147
1148         val1 = ucontrol->value.integer.value[0] & mask;
1149         val2 = ucontrol->value.integer.value[1] & mask;
1150         if (invert) {
1151                 val1 = mask - val1;
1152                 val2 = mask - val2;
1153         }
1154         val1 <<= shift_left;
1155         val2 <<= shift_right;
1156         spin_lock_irqsave(&chip->reg_lock, flags);
1157         if (left_reg != right_reg) {
1158                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1159                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1160                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1161                 snd_ad1848_out(chip, left_reg, val1);
1162                 snd_ad1848_out(chip, right_reg, val2);
1163         } else {
1164                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1165                 change = val1 != chip->image[left_reg];
1166                 snd_ad1848_out(chip, left_reg, val1);
1167         }
1168         spin_unlock_irqrestore(&chip->reg_lock, flags);
1169         return change;
1170 }
1171
1172 /*
1173  */
1174 int snd_ad1848_add_ctl(struct snd_ad1848 *chip, const char *name, int index, int type, unsigned long value)
1175 {
1176         static struct snd_kcontrol_new newctls[] = {
1177                 [AD1848_MIX_SINGLE] = {
1178                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1179                         .info = snd_ad1848_info_single,
1180                         .get = snd_ad1848_get_single,
1181                         .put = snd_ad1848_put_single,
1182                 },
1183                 [AD1848_MIX_DOUBLE] = {
1184                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1185                         .info = snd_ad1848_info_double,
1186                         .get = snd_ad1848_get_double,
1187                         .put = snd_ad1848_put_double,
1188                 },
1189                 [AD1848_MIX_CAPTURE] = {
1190                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1191                         .info = snd_ad1848_info_mux,
1192                         .get = snd_ad1848_get_mux,
1193                         .put = snd_ad1848_put_mux,
1194                 },
1195         };
1196         struct snd_kcontrol *ctl;
1197         int err;
1198
1199         ctl = snd_ctl_new1(&newctls[type], chip);
1200         if (! ctl)
1201                 return -ENOMEM;
1202         strlcpy(ctl->id.name, name, sizeof(ctl->id.name));
1203         ctl->id.index = index;
1204         ctl->private_value = value;
1205         if ((err = snd_ctl_add(chip->card, ctl)) < 0)
1206                 return err;
1207         return 0;
1208 }
1209
1210
1211 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1212 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1213 AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
1214 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1215 AD1848_DOUBLE("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1216 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1217 AD1848_DOUBLE("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1218 AD1848_DOUBLE("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0),
1219 {
1220         .name = "Capture Source",
1221         .type = AD1848_MIX_CAPTURE,
1222 },
1223 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1224 AD1848_SINGLE("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0)
1225 };
1226
1227 int snd_ad1848_mixer(struct snd_ad1848 *chip)
1228 {
1229         struct snd_card *card;
1230         struct snd_pcm *pcm;
1231         unsigned int idx;
1232         int err;
1233
1234         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1235
1236         pcm = chip->pcm;
1237         card = chip->card;
1238
1239         strcpy(card->mixername, pcm->name);
1240
1241         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1242                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1243                         return err;
1244
1245         return 0;
1246 }
1247
1248 EXPORT_SYMBOL(snd_ad1848_out);
1249 EXPORT_SYMBOL(snd_ad1848_create);
1250 EXPORT_SYMBOL(snd_ad1848_pcm);
1251 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
1252 EXPORT_SYMBOL(snd_ad1848_mixer);
1253 EXPORT_SYMBOL(snd_ad1848_add_ctl);
1254
1255 /*
1256  *  INIT part
1257  */
1258
1259 static int __init alsa_ad1848_init(void)
1260 {
1261         return 0;
1262 }
1263
1264 static void __exit alsa_ad1848_exit(void)
1265 {
1266 }
1267
1268 module_init(alsa_ad1848_init)
1269 module_exit(alsa_ad1848_exit)