sound/isa/ad1848/ad1848_lib.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@perex.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/tlv.h>
  33 #include <sound/pcm_params.h>
  34
  35 #include <asm/io.h>
  36 #include <asm/dma.h>
  37
  38 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  39 MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
  40 MODULE_LICENSE("GPL");
  41
  42 #if 0
  43 #define SNDRV_DEBUG_MCE
  44 #endif
  45
  46 /*
  47  *  Some variables
  48  */
  49
  50 static unsigned char freq_bits[14] = {
  51         /* 5510 */      0x00 | AD1848_XTAL2,
  52         /* 6620 */      0x0E | AD1848_XTAL2,
  53         /* 8000 */      0x00 | AD1848_XTAL1,
  54         /* 9600 */      0x0E | AD1848_XTAL1,
  55         /* 11025 */     0x02 | AD1848_XTAL2,
  56         /* 16000 */     0x02 | AD1848_XTAL1,
  57         /* 18900 */     0x04 | AD1848_XTAL2,
  58         /* 22050 */     0x06 | AD1848_XTAL2,
  59         /* 27042 */     0x04 | AD1848_XTAL1,
  60         /* 32000 */     0x06 | AD1848_XTAL1,
  61         /* 33075 */     0x0C | AD1848_XTAL2,
  62         /* 37800 */     0x08 | AD1848_XTAL2,
  63         /* 44100 */     0x0A | AD1848_XTAL2,
  64         /* 48000 */     0x0C | AD1848_XTAL1
  65 };
  66
  67 static unsigned int rates[14] = {
  68         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
  69         27042, 32000, 33075, 37800, 44100, 48000
  70 };
  71
  72 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
  73         .count = ARRAY_SIZE(rates),
  74         .list = rates,
  75         .mask = 0,
  76 };
  77
  78 static unsigned char snd_ad1848_original_image[16] =
  79 {
  80         0x00,                   /* 00 - lic */
  81         0x00,                   /* 01 - ric */
  82         0x9f,                   /* 02 - la1ic */
  83         0x9f,                   /* 03 - ra1ic */
  84         0x9f,                   /* 04 - la2ic */
  85         0x9f,                   /* 05 - ra2ic */
  86         0xbf,                   /* 06 - loc */
  87         0xbf,                   /* 07 - roc */
  88         0x20,                   /* 08 - dfr */
  89         AD1848_AUTOCALIB,       /* 09 - ic */
  90         0x00,                   /* 0a - pc */
  91         0x00,                   /* 0b - ti */
  92         0x00,                   /* 0c - mi */
  93         0x00,                   /* 0d - lbc */
  94         0x00,                   /* 0e - dru */
  95         0x00,                   /* 0f - drl */
  96 };
  97
  98 /*
  99  *  Basic I/O functions
 100  */
 101
 102 static void snd_ad1848_wait(struct snd_ad1848 *chip)
 103 {
 104         int timeout;
 105
 106         for (timeout = 250; timeout > 0; timeout--) {
 107                 if ((inb(AD1848P(chip, REGSEL)) & AD1848_INIT) == 0)
 108                         break;
 109                 udelay(100);
 110         }
 111 }
 112
 113 void snd_ad1848_out(struct snd_ad1848 *chip,
 114                            unsigned char reg,
 115                            unsigned char value)
 116 {
 117         snd_ad1848_wait(chip);
 118 #ifdef CONFIG_SND_DEBUG
 119         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 120                 snd_printk(KERN_WARNING "auto calibration time out - "
 121                            "reg = 0x%x, value = 0x%x\n", reg, value);
 122 #endif
 123         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 124         outb(chip->image[reg] = value, AD1848P(chip, REG));
 125         mb();
 126         snd_printdd("codec out - reg 0x%x = 0x%x\n",
 127                         chip->mce_bit | reg, value);
 128 }
 129
 130 EXPORT_SYMBOL(snd_ad1848_out);
 131
 132 static void snd_ad1848_dout(struct snd_ad1848 *chip,
 133                             unsigned char reg, unsigned char value)
 134 {
 135         snd_ad1848_wait(chip);
 136         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 137         outb(value, AD1848P(chip, REG));
 138         mb();
 139 }
 140
 141 static unsigned char snd_ad1848_in(struct snd_ad1848 *chip, unsigned char reg)
 142 {
 143         snd_ad1848_wait(chip);
 144 #ifdef CONFIG_SND_DEBUG
 145         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 146                 snd_printk(KERN_WARNING "auto calibration time out - "
 147                            "reg = 0x%x\n", reg);
 148 #endif
 149         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 150         mb();
 151         return inb(AD1848P(chip, REG));
 152 }
 153
 154 #if 0
 155
 156 static void snd_ad1848_debug(struct snd_ad1848 *chip)
 157 {
 158         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
 159         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
 160         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
 161         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
 162         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
 163         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
 164         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
 165         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
 166         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
 167         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
 168         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
 169         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
 170         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
 171         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
 172         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
 173         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
 174         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
 175         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
 176 }
 177
 178 #endif
 179
 180 /*
 181  *  AD1848 detection / MCE routines
 182  */
 183
 184 static void snd_ad1848_mce_up(struct snd_ad1848 *chip)
 185 {
 186         unsigned long flags;
 187         int timeout;
 188
 189         snd_ad1848_wait(chip);
 190 #ifdef CONFIG_SND_DEBUG
 191         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 192                 snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
 193 #endif
 194         spin_lock_irqsave(&chip->reg_lock, flags);
 195         chip->mce_bit |= AD1848_MCE;
 196         timeout = inb(AD1848P(chip, REGSEL));
 197         if (timeout == 0x80)
 198                 snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 199         if (!(timeout & AD1848_MCE))
 200                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
 201         spin_unlock_irqrestore(&chip->reg_lock, flags);
 202 }
 203
 204 static void snd_ad1848_mce_down(struct snd_ad1848 *chip)
 205 {
 206         unsigned long flags, timeout;
 207         int reg;
 208
 209         spin_lock_irqsave(&chip->reg_lock, flags);
 210         for (timeout = 5; timeout > 0; timeout--)
 211                 inb(AD1848P(chip, REGSEL));
 212         /* end of cleanup sequence */
 213         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 214                 udelay(100);
 215
 216         snd_printdd("(1) timeout = %d\n", timeout);
 217
 218 #ifdef CONFIG_SND_DEBUG
 219         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 220                 snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
 221 #endif
 222
 223         chip->mce_bit &= ~AD1848_MCE;
 224         reg = inb(AD1848P(chip, REGSEL));
 225         outb(chip->mce_bit | (reg & 0x1f), AD1848P(chip, REGSEL));
 226         if (reg == 0x80)
 227                 snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 228         if ((reg & AD1848_MCE) == 0) {
 229                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 230                 return;
 231         }
 232
 233         /*
 234          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 235          * It may take up to 5 sample periods (at most 907 us @ 5.5125 kHz) for
 236          * the process to _start_, so it is important to wait at least that long
 237          * before checking.  Otherwise we might think AC has finished when it
 238          * has in fact not begun.  It could take 128 (no AC) or 384 (AC) cycles
 239          * for ACI to drop.  This gives a wait of at most 70 ms with a more
 240          * typical value of 3-9 ms.
 241          */
 242         timeout = jiffies + msecs_to_jiffies(250);
 243         do {
 244                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 245                 msleep(1);
 246                 spin_lock_irqsave(&chip->reg_lock, flags);
 247                 reg = snd_ad1848_in(chip, AD1848_TEST_INIT) &
 248                       AD1848_CALIB_IN_PROGRESS;
 249         } while (reg && time_before(jiffies, timeout));
 250         spin_unlock_irqrestore(&chip->reg_lock, flags);
 251         if (reg)
 252                 snd_printk(KERN_ERR
 253                            "mce_down - auto calibration time out (2)\n");
 254
 255         snd_printdd("(4) jiffies = %lu\n", jiffies);
 256         snd_printd("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
 257 }
 258
 259 static unsigned int snd_ad1848_get_count(unsigned char format,
 260                                          unsigned int size)
 261 {
 262         switch (format & 0xe0) {
 263         case AD1848_LINEAR_16:
 264                 size >>= 1;
 265                 break;
 266         }
 267         if (format & AD1848_STEREO)
 268                 size >>= 1;
 269         return size;
 270 }
 271
 272 static int snd_ad1848_trigger(struct snd_ad1848 *chip, unsigned char what,
 273                               int channel, int cmd)
 274 {
 275         int result = 0;
 276
 277 #if 0
 278         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
 279 #endif
 280         spin_lock(&chip->reg_lock);
 281         if (cmd == SNDRV_PCM_TRIGGER_START) {
 282                 if (chip->image[AD1848_IFACE_CTRL] & what) {
 283                         spin_unlock(&chip->reg_lock);
 284                         return 0;
 285                 }
 286                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
 287                 chip->mode |= AD1848_MODE_RUNNING;
 288         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 289                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
 290                         spin_unlock(&chip->reg_lock);
 291                         return 0;
 292                 }
 293                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
 294                 chip->mode &= ~AD1848_MODE_RUNNING;
 295         } else {
 296                 result = -EINVAL;
 297         }
 298         spin_unlock(&chip->reg_lock);
 299         return result;
 300 }
 301
 302 /*
 303  *  CODEC I/O
 304  */
 305
 306 static unsigned char snd_ad1848_get_rate(unsigned int rate)
 307 {
 308         int i;
 309
 310         for (i = 0; i < ARRAY_SIZE(rates); i++)
 311                 if (rate == rates[i])
 312                         return freq_bits[i];
 313         snd_BUG();
 314         return freq_bits[ARRAY_SIZE(rates) - 1];
 315 }
 316
 317 static int snd_ad1848_ioctl(struct snd_pcm_substream *substream,
 318                             unsigned int cmd, void *arg)
 319 {
 320         return snd_pcm_lib_ioctl(substream, cmd, arg);
 321 }
 322
 323 static unsigned char snd_ad1848_get_format(int format, int channels)
 324 {
 325         unsigned char rformat;
 326
 327         rformat = AD1848_LINEAR_8;
 328         switch (format) {
 329         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
 330         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
 331         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
 332         }
 333         if (channels > 1)
 334                 rformat |= AD1848_STEREO;
 335 #if 0
 336         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 337 #endif
 338         return rformat;
 339 }
 340
 341 static void snd_ad1848_calibrate_mute(struct snd_ad1848 *chip, int mute)
 342 {
 343         unsigned long flags;
 344
 345         mute = mute ? 1 : 0;
 346         spin_lock_irqsave(&chip->reg_lock, flags);
 347         if (chip->calibrate_mute == mute) {
 348                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 349                 return;
 350         }
 351         if (!mute) {
 352                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
 353                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
 354         }
 355         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
 356         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
 357         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
 358         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
 359         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
 360         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
 361         chip->calibrate_mute = mute;
 362         spin_unlock_irqrestore(&chip->reg_lock, flags);
 363 }
 364
 365 static void snd_ad1848_set_data_format(struct snd_ad1848 *chip, struct snd_pcm_hw_params *hw_params)
 366 {
 367         if (hw_params == NULL) {
 368                 chip->image[AD1848_DATA_FORMAT] = 0x20;
 369         } else {
 370                 chip->image[AD1848_DATA_FORMAT] =
 371                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
 372                     snd_ad1848_get_rate(params_rate(hw_params));
 373         }
 374         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
 375 }
 376
 377 static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
 378 {
 379         unsigned long flags;
 380
 381         mutex_lock(&chip->open_mutex);
 382         if (chip->mode & AD1848_MODE_OPEN) {
 383                 mutex_unlock(&chip->open_mutex);
 384                 return -EAGAIN;
 385         }
 386         snd_ad1848_mce_down(chip);
 387
 388 #ifdef SNDRV_DEBUG_MCE
 389         snd_printk("open: (1)\n");
 390 #endif
 391         snd_ad1848_mce_up(chip);
 392         spin_lock_irqsave(&chip->reg_lock, flags);
 393         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 394                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
 395                              AD1848_CALIB_MODE);
 396         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
 397         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 398         spin_unlock_irqrestore(&chip->reg_lock, flags);
 399         snd_ad1848_mce_down(chip);
 400
 401 #ifdef SNDRV_DEBUG_MCE
 402         snd_printk("open: (2)\n");
 403 #endif
 404
 405         snd_ad1848_set_data_format(chip, NULL);
 406
 407         snd_ad1848_mce_up(chip);
 408         spin_lock_irqsave(&chip->reg_lock, flags);
 409         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 410         spin_unlock_irqrestore(&chip->reg_lock, flags);
 411         snd_ad1848_mce_down(chip);
 412
 413 #ifdef SNDRV_DEBUG_MCE
 414         snd_printk("open: (3)\n");
 415 #endif
 416
 417         /* ok. now enable and ack CODEC IRQ */
 418         spin_lock_irqsave(&chip->reg_lock, flags);
 419         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 420         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 421         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
 422         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 423         spin_unlock_irqrestore(&chip->reg_lock, flags);
 424
 425         chip->mode = mode;
 426         mutex_unlock(&chip->open_mutex);
 427
 428         return 0;
 429 }
 430
 431 static void snd_ad1848_close(struct snd_ad1848 *chip)
 432 {
 433         unsigned long flags;
 434
 435         mutex_lock(&chip->open_mutex);
 436         if (!chip->mode) {
 437                 mutex_unlock(&chip->open_mutex);
 438                 return;
 439         }
 440         /* disable IRQ */
 441         spin_lock_irqsave(&chip->reg_lock, flags);
 442         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 443         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 444         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
 445         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 446         spin_unlock_irqrestore(&chip->reg_lock, flags);
 447
 448         /* now disable capture & playback */
 449
 450         snd_ad1848_mce_up(chip);
 451         spin_lock_irqsave(&chip->reg_lock, flags);
 452         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 453                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 454         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 455         spin_unlock_irqrestore(&chip->reg_lock, flags);
 456         snd_ad1848_mce_down(chip);
 457
 458         /* clear IRQ again */
 459         spin_lock_irqsave(&chip->reg_lock, flags);
 460         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 461         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 462         spin_unlock_irqrestore(&chip->reg_lock, flags);
 463
 464         chip->mode = 0;
 465         mutex_unlock(&chip->open_mutex);
 466 }
 467
 468 /*
 469  *  ok.. exported functions..
 470  */
 471
 472 static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
 473                                        int cmd)
 474 {
 475         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 476         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
 477 }
 478
 479 static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
 480                                       int cmd)
 481 {
 482         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 483         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
 484 }
 485
 486 static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
 487                                          struct snd_pcm_hw_params *hw_params)
 488 {
 489         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 490         unsigned long flags;
 491         int err;
 492
 493         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 494                 return err;
 495         snd_ad1848_calibrate_mute(chip, 1);
 496         snd_ad1848_set_data_format(chip, hw_params);
 497         snd_ad1848_mce_up(chip);
 498         spin_lock_irqsave(&chip->reg_lock, flags);
 499         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 500         spin_unlock_irqrestore(&chip->reg_lock, flags);
 501         snd_ad1848_mce_down(chip);
 502         snd_ad1848_calibrate_mute(chip, 0);
 503         return 0;
 504 }
 505
 506 static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
 507 {
 508         return snd_pcm_lib_free_pages(substream);
 509 }
 510
 511 static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
 512 {
 513         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 514         struct snd_pcm_runtime *runtime = substream->runtime;
 515         unsigned long flags;
 516         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 517         unsigned int count = snd_pcm_lib_period_bytes(substream);
 518
 519         chip->dma_size = size;
 520         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
 521         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 522         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 523         spin_lock_irqsave(&chip->reg_lock, flags);
 524         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 525         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 526         spin_unlock_irqrestore(&chip->reg_lock, flags);
 527         return 0;
 528 }
 529
 530 static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
 531                                         struct snd_pcm_hw_params *hw_params)
 532 {
 533         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 534         unsigned long flags;
 535         int err;
 536
 537         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 538                 return err;
 539         snd_ad1848_calibrate_mute(chip, 1);
 540         snd_ad1848_set_data_format(chip, hw_params);
 541         snd_ad1848_mce_up(chip);
 542         spin_lock_irqsave(&chip->reg_lock, flags);
 543         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 544         spin_unlock_irqrestore(&chip->reg_lock, flags);
 545         snd_ad1848_mce_down(chip);
 546         snd_ad1848_calibrate_mute(chip, 0);
 547         return 0;
 548 }
 549
 550 static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
 551 {
 552         return snd_pcm_lib_free_pages(substream);
 553 }
 554
 555 static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
 556 {
 557         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 558         struct snd_pcm_runtime *runtime = substream->runtime;
 559         unsigned long flags;
 560         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 561         unsigned int count = snd_pcm_lib_period_bytes(substream);
 562
 563         chip->dma_size = size;
 564         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 565         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 566         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 567         spin_lock_irqsave(&chip->reg_lock, flags);
 568         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 569         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 570         spin_unlock_irqrestore(&chip->reg_lock, flags);
 571         return 0;
 572 }
 573
 574 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
 575 {
 576         struct snd_ad1848 *chip = dev_id;
 577
 578         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
 579             (chip->mode & AD1848_MODE_RUNNING))
 580                 snd_pcm_period_elapsed(chip->playback_substream);
 581         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
 582             (chip->mode & AD1848_MODE_RUNNING))
 583                 snd_pcm_period_elapsed(chip->capture_substream);
 584         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
 585         return IRQ_HANDLED;
 586 }
 587
 588 static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
 589 {
 590         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 591         size_t ptr;
 592
 593         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
 594                 return 0;
 595         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 596         return bytes_to_frames(substream->runtime, ptr);
 597 }
 598
 599 static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
 600 {
 601         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 602         size_t ptr;
 603
 604         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
 605                 return 0;
 606         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 607         return bytes_to_frames(substream->runtime, ptr);
 608 }
 609
 610 /*
 611
 612  */
 613
 614 static void snd_ad1848_thinkpad_twiddle(struct snd_ad1848 *chip, int on) {
 615
 616         int tmp;
 617
 618         if (!chip->thinkpad_flag) return;
 619
 620         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
 621         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
 622
 623         if (on)
 624                 /* turn it on */
 625                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
 626         else
 627                 /* turn it off */
 628                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
 629
 630         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
 631
 632 }
 633
 634 #ifdef CONFIG_PM
 635 static void snd_ad1848_suspend(struct snd_ad1848 *chip)
 636 {
 637         snd_pcm_suspend_all(chip->pcm);
 638         if (chip->thinkpad_flag)
 639                 snd_ad1848_thinkpad_twiddle(chip, 0);
 640 }
 641
 642 static void snd_ad1848_resume(struct snd_ad1848 *chip)
 643 {
 644         int i;
 645
 646         if (chip->thinkpad_flag)
 647                 snd_ad1848_thinkpad_twiddle(chip, 1);
 648
 649         /* clear any pendings IRQ */
 650         inb(AD1848P(chip, STATUS));
 651         outb(0, AD1848P(chip, STATUS));
 652         mb();
 653
 654         snd_ad1848_mce_down(chip);
 655         for (i = 0; i < 16; i++)
 656                 snd_ad1848_out(chip, i, chip->image[i]);
 657         snd_ad1848_mce_up(chip);
 658         snd_ad1848_mce_down(chip);
 659 }
 660 #endif /* CONFIG_PM */
 661
 662 static int snd_ad1848_probe(struct snd_ad1848 * chip)
 663 {
 664         unsigned long flags;
 665         int i, id, rev, ad1847;
 666         unsigned char *ptr;
 667
 668 #if 0
 669         snd_ad1848_debug(chip);
 670 #endif
 671         id = ad1847 = 0;
 672         for (i = 0; i < 1000; i++) {
 673                 mb();
 674                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 675                         udelay(500);
 676                 else {
 677                         spin_lock_irqsave(&chip->reg_lock, flags);
 678                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 679                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
 680                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
 681                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
 682                         if (rev == 0x65) {
 683                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 684                                 id = 1;
 685                                 ad1847 = 1;
 686                                 break;
 687                         }
 688                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
 689                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 690                                 id = 1;
 691                                 break;
 692                         }
 693                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 694                 }
 695         }
 696         if (id != 1)
 697                 return -ENODEV; /* no valid device found */
 698         if (chip->hardware == AD1848_HW_DETECT) {
 699                 if (ad1847) {
 700                         chip->hardware = AD1848_HW_AD1847;
 701                 } else {
 702                         chip->hardware = AD1848_HW_AD1848;
 703                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
 704                         if (rev & 0x80) {
 705                                 chip->hardware = AD1848_HW_CS4248;
 706                         } else if ((rev & 0x0f) == 0x0a) {
 707                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
 708                                 for (i = 0; i < 16; ++i) {
 709                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
 710                                                 chip->hardware = AD1848_HW_CMI8330;
 711                                                 break;
 712                                         }
 713                                 }
 714                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 715                         }
 716                 }
 717         }
 718         spin_lock_irqsave(&chip->reg_lock, flags);
 719         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
 720         outb(0, AD1848P(chip, STATUS));
 721         mb();
 722         spin_unlock_irqrestore(&chip->reg_lock, flags);
 723
 724         chip->image[AD1848_MISC_INFO] = 0x00;
 725         chip->image[AD1848_IFACE_CTRL] =
 726             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
 727         ptr = (unsigned char *) &chip->image;
 728         snd_ad1848_mce_down(chip);
 729         spin_lock_irqsave(&chip->reg_lock, flags);
 730         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
 731                 snd_ad1848_out(chip, i, *ptr++);
 732         spin_unlock_irqrestore(&chip->reg_lock, flags);
 733         snd_ad1848_mce_up(chip);
 734         snd_ad1848_mce_down(chip);
 735         return 0;               /* all things are ok.. */
 736 }
 737
 738 /*
 739
 740  */
 741
 742 static struct snd_pcm_hardware snd_ad1848_playback =
 743 {
 744         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 745                                  SNDRV_PCM_INFO_MMAP_VALID),
 746         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 747                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 748         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 749         .rate_min =             5510,
 750         .rate_max =             48000,
 751         .channels_min =         1,
 752         .channels_max =         2,
 753         .buffer_bytes_max =     (128*1024),
 754         .period_bytes_min =     64,
 755         .period_bytes_max =     (128*1024),
 756         .periods_min =          1,
 757         .periods_max =          1024,
 758         .fifo_size =            0,
 759 };
 760
 761 static struct snd_pcm_hardware snd_ad1848_capture =
 762 {
 763         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 764                                  SNDRV_PCM_INFO_MMAP_VALID),
 765         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 766                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 767         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 768         .rate_min =             5510,
 769         .rate_max =             48000,
 770         .channels_min =         1,
 771         .channels_max =         2,
 772         .buffer_bytes_max =     (128*1024),
 773         .period_bytes_min =     64,
 774         .period_bytes_max =     (128*1024),
 775         .periods_min =          1,
 776         .periods_max =          1024,
 777         .fifo_size =            0,
 778 };
 779
 780 /*
 781
 782  */
 783
 784 static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
 785 {
 786         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 787         struct snd_pcm_runtime *runtime = substream->runtime;
 788         int err;
 789
 790         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
 791                 return err;
 792         chip->playback_substream = substream;
 793         runtime->hw = snd_ad1848_playback;
 794         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 795         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 796         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 797         return 0;
 798 }
 799
 800 static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
 801 {
 802         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 803         struct snd_pcm_runtime *runtime = substream->runtime;
 804         int err;
 805
 806         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
 807                 return err;
 808         chip->capture_substream = substream;
 809         runtime->hw = snd_ad1848_capture;
 810         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 811         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 812         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 813         return 0;
 814 }
 815
 816 static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
 817 {
 818         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 819
 820         chip->mode &= ~AD1848_MODE_PLAY;
 821         chip->playback_substream = NULL;
 822         snd_ad1848_close(chip);
 823         return 0;
 824 }
 825
 826 static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
 827 {
 828         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 829
 830         chip->mode &= ~AD1848_MODE_CAPTURE;
 831         chip->capture_substream = NULL;
 832         snd_ad1848_close(chip);
 833         return 0;
 834 }
 835
 836 static int snd_ad1848_free(struct snd_ad1848 *chip)
 837 {
 838         release_and_free_resource(chip->res_port);
 839         if (chip->irq >= 0)
 840                 free_irq(chip->irq, (void *) chip);
 841         if (chip->dma >= 0) {
 842                 snd_dma_disable(chip->dma);
 843                 free_dma(chip->dma);
 844         }
 845         kfree(chip);
 846         return 0;
 847 }
 848
 849 static int snd_ad1848_dev_free(struct snd_device *device)
 850 {
 851         struct snd_ad1848 *chip = device->device_data;
 852         return snd_ad1848_free(chip);
 853 }
 854
 855 static const char *snd_ad1848_chip_id(struct snd_ad1848 *chip)
 856 {
 857         switch (chip->hardware) {
 858         case AD1848_HW_AD1847:  return "AD1847";
 859         case AD1848_HW_AD1848:  return "AD1848";
 860         case AD1848_HW_CS4248:  return "CS4248";
 861         case AD1848_HW_CMI8330: return "CMI8330/C3D";
 862         default:                return "???";
 863         }
 864 }
 865
 866 int snd_ad1848_create(struct snd_card *card,
 867                       unsigned long port,
 868                       int irq, int dma,
 869                       unsigned short hardware,
 870                       struct snd_ad1848 ** rchip)
 871 {
 872         static struct snd_device_ops ops = {
 873                 .dev_free =     snd_ad1848_dev_free,
 874         };
 875         struct snd_ad1848 *chip;
 876         int err;
 877
 878         *rchip = NULL;
 879         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 880         if (chip == NULL)
 881                 return -ENOMEM;
 882         spin_lock_init(&chip->reg_lock);
 883         mutex_init(&chip->open_mutex);
 884         chip->card = card;
 885         chip->port = port;
 886         chip->irq = -1;
 887         chip->dma = -1;
 888         chip->hardware = hardware;
 889         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
 890
 891         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
 892                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
 893                 snd_ad1848_free(chip);
 894                 return -EBUSY;
 895         }
 896         if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
 897                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
 898                 snd_ad1848_free(chip);
 899                 return -EBUSY;
 900         }
 901         chip->irq = irq;
 902         if (request_dma(dma, "AD1848")) {
 903                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
 904                 snd_ad1848_free(chip);
 905                 return -EBUSY;
 906         }
 907         chip->dma = dma;
 908
 909         if (hardware == AD1848_HW_THINKPAD) {
 910                 chip->thinkpad_flag = 1;
 911                 chip->hardware = AD1848_HW_DETECT; /* reset */
 912                 snd_ad1848_thinkpad_twiddle(chip, 1);
 913         }
 914
 915         if (snd_ad1848_probe(chip) < 0) {
 916                 snd_ad1848_free(chip);
 917                 return -ENODEV;
 918         }
 919
 920         /* Register device */
 921         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 922                 snd_ad1848_free(chip);
 923                 return err;
 924         }
 925
 926 #ifdef CONFIG_PM
 927         chip->suspend = snd_ad1848_suspend;
 928         chip->resume = snd_ad1848_resume;
 929 #endif
 930
 931         *rchip = chip;
 932         return 0;
 933 }
 934
 935 EXPORT_SYMBOL(snd_ad1848_create);
 936
 937 static struct snd_pcm_ops snd_ad1848_playback_ops = {
 938         .open =         snd_ad1848_playback_open,
 939         .close =        snd_ad1848_playback_close,
 940         .ioctl =        snd_ad1848_ioctl,
 941         .hw_params =    snd_ad1848_playback_hw_params,
 942         .hw_free =      snd_ad1848_playback_hw_free,
 943         .prepare =      snd_ad1848_playback_prepare,
 944         .trigger =      snd_ad1848_playback_trigger,
 945         .pointer =      snd_ad1848_playback_pointer,
 946 };
 947
 948 static struct snd_pcm_ops snd_ad1848_capture_ops = {
 949         .open =         snd_ad1848_capture_open,
 950         .close =        snd_ad1848_capture_close,
 951         .ioctl =        snd_ad1848_ioctl,
 952         .hw_params =    snd_ad1848_capture_hw_params,
 953         .hw_free =      snd_ad1848_capture_hw_free,
 954         .prepare =      snd_ad1848_capture_prepare,
 955         .trigger =      snd_ad1848_capture_trigger,
 956         .pointer =      snd_ad1848_capture_pointer,
 957 };
 958
 959 int snd_ad1848_pcm(struct snd_ad1848 *chip, int device, struct snd_pcm **rpcm)
 960 {
 961         struct snd_pcm *pcm;
 962         int err;
 963
 964         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
 965                 return err;
 966
 967         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
 968         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
 969
 970         pcm->private_data = chip;
 971         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 972         strcpy(pcm->name, snd_ad1848_chip_id(chip));
 973
 974         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 975                                               snd_dma_isa_data(),
 976                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
 977
 978         chip->pcm = pcm;
 979         if (rpcm)
 980                 *rpcm = pcm;
 981         return 0;
 982 }
 983
 984 EXPORT_SYMBOL(snd_ad1848_pcm);
 985
 986 const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
 987 {
 988         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 989                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
 990 }
 991
 992 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
 993
 994 /*
 995  *  MIXER part
 996  */
 997
 998 static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 999 {
1000         static char *texts[4] = {
1001                 "Line", "Aux", "Mic", "Mix"
1002         };
1003
1004         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1005         uinfo->count = 2;
1006         uinfo->value.enumerated.items = 4;
1007         if (uinfo->value.enumerated.item > 3)
1008                 uinfo->value.enumerated.item = 3;
1009         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1010         return 0;
1011 }
1012
1013 static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1014 {
1015         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1016         unsigned long flags;
1017
1018         spin_lock_irqsave(&chip->reg_lock, flags);
1019         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1020         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1021         spin_unlock_irqrestore(&chip->reg_lock, flags);
1022         return 0;
1023 }
1024
1025 static int snd_ad1848_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1026 {
1027         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1028         unsigned long flags;
1029         unsigned short left, right;
1030         int change;
1031
1032         if (ucontrol->value.enumerated.item[0] > 3 ||
1033             ucontrol->value.enumerated.item[1] > 3)
1034                 return -EINVAL;
1035         left = ucontrol->value.enumerated.item[0] << 6;
1036         right = ucontrol->value.enumerated.item[1] << 6;
1037         spin_lock_irqsave(&chip->reg_lock, flags);
1038         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1039         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1040         change = left != chip->image[AD1848_LEFT_INPUT] ||
1041                  right != chip->image[AD1848_RIGHT_INPUT];
1042         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1043         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1044         spin_unlock_irqrestore(&chip->reg_lock, flags);
1045         return change;
1046 }
1047
1048 static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1049 {
1050         int mask = (kcontrol->private_value >> 16) & 0xff;
1051
1052         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1053         uinfo->count = 1;
1054         uinfo->value.integer.min = 0;
1055         uinfo->value.integer.max = mask;
1056         return 0;
1057 }
1058
1059 static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1060 {
1061         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1062         unsigned long flags;
1063         int reg = kcontrol->private_value & 0xff;
1064         int shift = (kcontrol->private_value >> 8) & 0xff;
1065         int mask = (kcontrol->private_value >> 16) & 0xff;
1066         int invert = (kcontrol->private_value >> 24) & 0xff;
1067
1068         spin_lock_irqsave(&chip->reg_lock, flags);
1069         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1070         spin_unlock_irqrestore(&chip->reg_lock, flags);
1071         if (invert)
1072                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1073         return 0;
1074 }
1075
1076 static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1077 {
1078         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1079         unsigned long flags;
1080         int reg = kcontrol->private_value & 0xff;
1081         int shift = (kcontrol->private_value >> 8) & 0xff;
1082         int mask = (kcontrol->private_value >> 16) & 0xff;
1083         int invert = (kcontrol->private_value >> 24) & 0xff;
1084         int change;
1085         unsigned short val;
1086
1087         val = (ucontrol->value.integer.value[0] & mask);
1088         if (invert)
1089                 val = mask - val;
1090         val <<= shift;
1091         spin_lock_irqsave(&chip->reg_lock, flags);
1092         val = (chip->image[reg] & ~(mask << shift)) | val;
1093         change = val != chip->image[reg];
1094         snd_ad1848_out(chip, reg, val);
1095         spin_unlock_irqrestore(&chip->reg_lock, flags);
1096         return change;
1097 }
1098
1099 static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1100 {
1101         int mask = (kcontrol->private_value >> 24) & 0xff;
1102
1103         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1104         uinfo->count = 2;
1105         uinfo->value.integer.min = 0;
1106         uinfo->value.integer.max = mask;
1107         return 0;
1108 }
1109
1110 static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1111 {
1112         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1113         unsigned long flags;
1114         int left_reg = kcontrol->private_value & 0xff;
1115         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1116         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1117         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1118         int mask = (kcontrol->private_value >> 24) & 0xff;
1119         int invert = (kcontrol->private_value >> 22) & 1;
1120
1121         spin_lock_irqsave(&chip->reg_lock, flags);
1122         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1123         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1124         spin_unlock_irqrestore(&chip->reg_lock, flags);
1125         if (invert) {
1126                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1127                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1128         }
1129         return 0;
1130 }
1131
1132 static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1133 {
1134         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1135         unsigned long flags;
1136         int left_reg = kcontrol->private_value & 0xff;
1137         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1138         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1139         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1140         int mask = (kcontrol->private_value >> 24) & 0xff;
1141         int invert = (kcontrol->private_value >> 22) & 1;
1142         int change;
1143         unsigned short val1, val2;
1144
1145         val1 = ucontrol->value.integer.value[0] & mask;
1146         val2 = ucontrol->value.integer.value[1] & mask;
1147         if (invert) {
1148                 val1 = mask - val1;
1149                 val2 = mask - val2;
1150         }
1151         val1 <<= shift_left;
1152         val2 <<= shift_right;
1153         spin_lock_irqsave(&chip->reg_lock, flags);
1154         if (left_reg != right_reg) {
1155                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1156                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1157                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1158                 snd_ad1848_out(chip, left_reg, val1);
1159                 snd_ad1848_out(chip, right_reg, val2);
1160         } else {
1161                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1162                 change = val1 != chip->image[left_reg];
1163                 snd_ad1848_out(chip, left_reg, val1);
1164         }
1165         spin_unlock_irqrestore(&chip->reg_lock, flags);
1166         return change;
1167 }
1168
1169 /*
1170  */
1171 int snd_ad1848_add_ctl_elem(struct snd_ad1848 *chip,
1172                             const struct ad1848_mix_elem *c)
1173 {
1174         static struct snd_kcontrol_new newctls[] = {
1175                 [AD1848_MIX_SINGLE] = {
1176                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1177                         .info = snd_ad1848_info_single,
1178                         .get = snd_ad1848_get_single,
1179                         .put = snd_ad1848_put_single,
1180                 },
1181                 [AD1848_MIX_DOUBLE] = {
1182                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1183                         .info = snd_ad1848_info_double,
1184                         .get = snd_ad1848_get_double,
1185                         .put = snd_ad1848_put_double,
1186                 },
1187                 [AD1848_MIX_CAPTURE] = {
1188                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1189                         .info = snd_ad1848_info_mux,
1190                         .get = snd_ad1848_get_mux,
1191                         .put = snd_ad1848_put_mux,
1192                 },
1193         };
1194         struct snd_kcontrol *ctl;
1195         int err;
1196
1197         ctl = snd_ctl_new1(&newctls[c->type], chip);
1198         if (! ctl)
1199                 return -ENOMEM;
1200         strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
1201         ctl->id.index = c->index;
1202         ctl->private_value = c->private_value;
1203         if (c->tlv) {
1204                 ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1205                 ctl->tlv.p = c->tlv;
1206         }
1207         if ((err = snd_ctl_add(chip->card, ctl)) < 0)
1208                 return err;
1209         return 0;
1210 }
1211
1212 EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
1213
1214 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
1215 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
1216 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
1217
1218 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1219 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1220 AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
1221                   db_scale_6bit),
1222 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1223 AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
1224                   db_scale_5bit_12db_max),
1225 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1226 AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
1227                   db_scale_5bit_12db_max),
1228 AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
1229                   db_scale_rec_gain),
1230 {
1231         .name = "Capture Source",
1232         .type = AD1848_MIX_CAPTURE,
1233 },
1234 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1235 AD1848_SINGLE_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
1236                   db_scale_6bit),
1237 };
1238
1239 int snd_ad1848_mixer(struct snd_ad1848 *chip)
1240 {
1241         struct snd_card *card;
1242         struct snd_pcm *pcm;
1243         unsigned int idx;
1244         int err;
1245
1246         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1247
1248         pcm = chip->pcm;
1249         card = chip->card;
1250
1251         strcpy(card->mixername, pcm->name);
1252
1253         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1254                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1255                         return err;
1256
1257         return 0;
1258 }
1259
1260 EXPORT_SYMBOL(snd_ad1848_mixer);
1261
1262 /*
1263  *  INIT part
1264  */
1265
1266 static int __init alsa_ad1848_init(void)
1267 {
1268         return 0;
1269 }
1270
1271 static void __exit alsa_ad1848_exit(void)
1272 {
1273 }
1274
1275 module_init(alsa_ad1848_init)
1276 module_exit(alsa_ad1848_exit)