git.oblomov.eu Git - linux-2.6/blob - 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 <linux/delay.h>
  24 #include <linux/init.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/slab.h>
  27 #include <linux/ioport.h>
  28 #include <sound/core.h>
  29 #include <sound/ad1848.h>
  30 #include <sound/control.h>
  31 #include <sound/tlv.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@perex.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 = ARRAY_SIZE(rates),
  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 static void snd_ad1848_wait(struct snd_ad1848 *chip)
 102 {
 103         int timeout;
 104
 105         for (timeout = 250; timeout > 0; timeout--) {
 106                 if ((inb(AD1848P(chip, REGSEL)) & AD1848_INIT) == 0)
 107                         break;
 108                 udelay(100);
 109         }
 110 }
 111
 112 void snd_ad1848_out(struct snd_ad1848 *chip,
 113                            unsigned char reg,
 114                            unsigned char value)
 115 {
 116         snd_ad1848_wait(chip);
 117 #ifdef CONFIG_SND_DEBUG
 118         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 119                 snd_printk(KERN_WARNING "auto calibration time out - "
 120                            "reg = 0x%x, value = 0x%x\n", reg, value);
 121 #endif
 122         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 123         outb(chip->image[reg] = value, AD1848P(chip, REG));
 124         mb();
 125         snd_printdd("codec out - reg 0x%x = 0x%x\n",
 126                         chip->mce_bit | reg, value);
 127 }
 128
 129 EXPORT_SYMBOL(snd_ad1848_out);
 130
 131 static void snd_ad1848_dout(struct snd_ad1848 *chip,
 132                             unsigned char reg, unsigned char value)
 133 {
 134         snd_ad1848_wait(chip);
 135         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 136         outb(value, AD1848P(chip, REG));
 137         mb();
 138 }
 139
 140 static unsigned char snd_ad1848_in(struct snd_ad1848 *chip, unsigned char reg)
 141 {
 142         snd_ad1848_wait(chip);
 143 #ifdef CONFIG_SND_DEBUG
 144         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 145                 snd_printk(KERN_WARNING "auto calibration time out - "
 146                            "reg = 0x%x\n", reg);
 147 #endif
 148         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 149         mb();
 150         return inb(AD1848P(chip, REG));
 151 }
 152
 153 #if 0
 154
 155 static void snd_ad1848_debug(struct snd_ad1848 *chip)
 156 {
 157         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
 158         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
 159         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
 160         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
 161         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
 162         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
 163         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
 164         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
 165         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
 166         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
 167         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
 168         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
 169         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
 170         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
 171         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
 172         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
 173         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
 174         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
 175 }
 176
 177 #endif
 178
 179 /*
 180  *  AD1848 detection / MCE routines
 181  */
 182
 183 static void snd_ad1848_mce_up(struct snd_ad1848 *chip)
 184 {
 185         unsigned long flags;
 186         int timeout;
 187
 188         snd_ad1848_wait(chip);
 189 #ifdef CONFIG_SND_DEBUG
 190         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 191                 snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
 192 #endif
 193         spin_lock_irqsave(&chip->reg_lock, flags);
 194         chip->mce_bit |= AD1848_MCE;
 195         timeout = inb(AD1848P(chip, REGSEL));
 196         if (timeout == 0x80)
 197                 snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 198         if (!(timeout & AD1848_MCE))
 199                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
 200         spin_unlock_irqrestore(&chip->reg_lock, flags);
 201 }
 202
 203 static void snd_ad1848_mce_down(struct snd_ad1848 *chip)
 204 {
 205         unsigned long flags, timeout;
 206         int reg;
 207
 208         spin_lock_irqsave(&chip->reg_lock, flags);
 209         for (timeout = 5; timeout > 0; timeout--)
 210                 inb(AD1848P(chip, REGSEL));
 211         /* end of cleanup sequence */
 212         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 213                 udelay(100);
 214
 215         snd_printdd("(1) timeout = %ld\n", timeout);
 216
 217 #ifdef CONFIG_SND_DEBUG
 218         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 219                 snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
 220 #endif
 221
 222         chip->mce_bit &= ~AD1848_MCE;
 223         reg = inb(AD1848P(chip, REGSEL));
 224         outb(chip->mce_bit | (reg & 0x1f), AD1848P(chip, REGSEL));
 225         if (reg == 0x80)
 226                 snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 227         if ((reg & AD1848_MCE) == 0) {
 228                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 229                 return;
 230         }
 231
 232         /*
 233          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 234          * It may take up to 5 sample periods (at most 907 us @ 5.5125 kHz) for
 235          * the process to _start_, so it is important to wait at least that long
 236          * before checking.  Otherwise we might think AC has finished when it
 237          * has in fact not begun.  It could take 128 (no AC) or 384 (AC) cycles
 238          * for ACI to drop.  This gives a wait of at most 70 ms with a more
 239          * typical value of 3-9 ms.
 240          */
 241         timeout = jiffies + msecs_to_jiffies(250);
 242         do {
 243                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 244                 msleep(1);
 245                 spin_lock_irqsave(&chip->reg_lock, flags);
 246                 reg = snd_ad1848_in(chip, AD1848_TEST_INIT) &
 247                       AD1848_CALIB_IN_PROGRESS;
 248         } while (reg && time_before(jiffies, timeout));
 249         spin_unlock_irqrestore(&chip->reg_lock, flags);
 250         if (reg)
 251                 snd_printk(KERN_ERR
 252                            "mce_down - auto calibration time out (2)\n");
 253
 254         snd_printdd("(4) jiffies = %lu\n", jiffies);
 255         snd_printd("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
 256 }
 257
 258 static unsigned int snd_ad1848_get_count(unsigned char format,
 259                                          unsigned int size)
 260 {
 261         switch (format & 0xe0) {
 262         case AD1848_LINEAR_16:
 263                 size >>= 1;
 264                 break;
 265         }
 266         if (format & AD1848_STEREO)
 267                 size >>= 1;
 268         return size;
 269 }
 270
 271 static int snd_ad1848_trigger(struct snd_ad1848 *chip, unsigned char what,
 272                               int channel, int cmd)
 273 {
 274         int result = 0;
 275
 276 #if 0
 277         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
 278 #endif
 279         spin_lock(&chip->reg_lock);
 280         if (cmd == SNDRV_PCM_TRIGGER_START) {
 281                 if (chip->image[AD1848_IFACE_CTRL] & what) {
 282                         spin_unlock(&chip->reg_lock);
 283                         return 0;
 284                 }
 285                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
 286                 chip->mode |= AD1848_MODE_RUNNING;
 287         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 288                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
 289                         spin_unlock(&chip->reg_lock);
 290                         return 0;
 291                 }
 292                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
 293                 chip->mode &= ~AD1848_MODE_RUNNING;
 294         } else {
 295                 result = -EINVAL;
 296         }
 297         spin_unlock(&chip->reg_lock);
 298         return result;
 299 }
 300
 301 /*
 302  *  CODEC I/O
 303  */
 304
 305 static unsigned char snd_ad1848_get_rate(unsigned int rate)
 306 {
 307         int i;
 308
 309         for (i = 0; i < ARRAY_SIZE(rates); i++)
 310                 if (rate == rates[i])
 311                         return freq_bits[i];
 312         snd_BUG();
 313         return freq_bits[ARRAY_SIZE(rates) - 1];
 314 }
 315
 316 static int snd_ad1848_ioctl(struct snd_pcm_substream *substream,
 317                             unsigned int cmd, void *arg)
 318 {
 319         return snd_pcm_lib_ioctl(substream, cmd, arg);
 320 }
 321
 322 static unsigned char snd_ad1848_get_format(int format, int channels)
 323 {
 324         unsigned char rformat;
 325
 326         rformat = AD1848_LINEAR_8;
 327         switch (format) {
 328         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
 329         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
 330         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
 331         }
 332         if (channels > 1)
 333                 rformat |= AD1848_STEREO;
 334 #if 0
 335         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 336 #endif
 337         return rformat;
 338 }
 339
 340 static void snd_ad1848_calibrate_mute(struct snd_ad1848 *chip, int mute)
 341 {
 342         unsigned long flags;
 343
 344         mute = mute ? 1 : 0;
 345         spin_lock_irqsave(&chip->reg_lock, flags);
 346         if (chip->calibrate_mute == mute) {
 347                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 348                 return;
 349         }
 350         if (!mute) {
 351                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
 352                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
 353         }
 354         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
 355         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
 356         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
 357         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
 358         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
 359         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
 360         chip->calibrate_mute = mute;
 361         spin_unlock_irqrestore(&chip->reg_lock, flags);
 362 }
 363
 364 static void snd_ad1848_set_data_format(struct snd_ad1848 *chip, struct snd_pcm_hw_params *hw_params)
 365 {
 366         if (hw_params == NULL) {
 367                 chip->image[AD1848_DATA_FORMAT] = 0x20;
 368         } else {
 369                 chip->image[AD1848_DATA_FORMAT] =
 370                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
 371                     snd_ad1848_get_rate(params_rate(hw_params));
 372         }
 373         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
 374 }
 375
 376 static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
 377 {
 378         unsigned long flags;
 379
 380         if (chip->mode & AD1848_MODE_OPEN)
 381                 return -EAGAIN;
 382
 383         snd_ad1848_mce_down(chip);
 384
 385 #ifdef SNDRV_DEBUG_MCE
 386         snd_printk("open: (1)\n");
 387 #endif
 388         snd_ad1848_mce_up(chip);
 389         spin_lock_irqsave(&chip->reg_lock, flags);
 390         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 391                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
 392                              AD1848_CALIB_MODE);
 393         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
 394         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 395         spin_unlock_irqrestore(&chip->reg_lock, flags);
 396         snd_ad1848_mce_down(chip);
 397
 398 #ifdef SNDRV_DEBUG_MCE
 399         snd_printk("open: (2)\n");
 400 #endif
 401
 402         snd_ad1848_set_data_format(chip, NULL);
 403
 404         snd_ad1848_mce_up(chip);
 405         spin_lock_irqsave(&chip->reg_lock, flags);
 406         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 407         spin_unlock_irqrestore(&chip->reg_lock, flags);
 408         snd_ad1848_mce_down(chip);
 409
 410 #ifdef SNDRV_DEBUG_MCE
 411         snd_printk("open: (3)\n");
 412 #endif
 413
 414         /* ok. now enable and ack CODEC IRQ */
 415         spin_lock_irqsave(&chip->reg_lock, flags);
 416         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 417         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 418         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
 419         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 420         spin_unlock_irqrestore(&chip->reg_lock, flags);
 421
 422         chip->mode = mode;
 423
 424         return 0;
 425 }
 426
 427 static void snd_ad1848_close(struct snd_ad1848 *chip)
 428 {
 429         unsigned long flags;
 430
 431         if (!chip->mode)
 432                 return;
 433         /* disable IRQ */
 434         spin_lock_irqsave(&chip->reg_lock, flags);
 435         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 436         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 437         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
 438         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 439         spin_unlock_irqrestore(&chip->reg_lock, flags);
 440
 441         /* now disable capture & playback */
 442
 443         snd_ad1848_mce_up(chip);
 444         spin_lock_irqsave(&chip->reg_lock, flags);
 445         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 446                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 447         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 448         spin_unlock_irqrestore(&chip->reg_lock, flags);
 449         snd_ad1848_mce_down(chip);
 450
 451         /* clear IRQ again */
 452         spin_lock_irqsave(&chip->reg_lock, flags);
 453         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 454         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 455         spin_unlock_irqrestore(&chip->reg_lock, flags);
 456
 457         chip->mode = 0;
 458 }
 459
 460 /*
 461  *  ok.. exported functions..
 462  */
 463
 464 static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
 465                                        int cmd)
 466 {
 467         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 468         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
 469 }
 470
 471 static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
 472                                       int cmd)
 473 {
 474         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 475         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
 476 }
 477
 478 static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
 479                                          struct snd_pcm_hw_params *hw_params)
 480 {
 481         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 482         unsigned long flags;
 483         int err;
 484
 485         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 486                 return err;
 487         snd_ad1848_calibrate_mute(chip, 1);
 488         snd_ad1848_set_data_format(chip, hw_params);
 489         snd_ad1848_mce_up(chip);
 490         spin_lock_irqsave(&chip->reg_lock, flags);
 491         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 492         spin_unlock_irqrestore(&chip->reg_lock, flags);
 493         snd_ad1848_mce_down(chip);
 494         snd_ad1848_calibrate_mute(chip, 0);
 495         return 0;
 496 }
 497
 498 static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
 499 {
 500         return snd_pcm_lib_free_pages(substream);
 501 }
 502
 503 static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
 504 {
 505         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 506         struct snd_pcm_runtime *runtime = substream->runtime;
 507         unsigned long flags;
 508         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 509         unsigned int count = snd_pcm_lib_period_bytes(substream);
 510
 511         chip->dma_size = size;
 512         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
 513         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 514         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 515         spin_lock_irqsave(&chip->reg_lock, flags);
 516         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 517         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 518         spin_unlock_irqrestore(&chip->reg_lock, flags);
 519         return 0;
 520 }
 521
 522 static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
 523                                         struct snd_pcm_hw_params *hw_params)
 524 {
 525         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 526         unsigned long flags;
 527         int err;
 528
 529         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 530                 return err;
 531         snd_ad1848_calibrate_mute(chip, 1);
 532         snd_ad1848_set_data_format(chip, hw_params);
 533         snd_ad1848_mce_up(chip);
 534         spin_lock_irqsave(&chip->reg_lock, flags);
 535         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 536         spin_unlock_irqrestore(&chip->reg_lock, flags);
 537         snd_ad1848_mce_down(chip);
 538         snd_ad1848_calibrate_mute(chip, 0);
 539         return 0;
 540 }
 541
 542 static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
 543 {
 544         return snd_pcm_lib_free_pages(substream);
 545 }
 546
 547 static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
 548 {
 549         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 550         struct snd_pcm_runtime *runtime = substream->runtime;
 551         unsigned long flags;
 552         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 553         unsigned int count = snd_pcm_lib_period_bytes(substream);
 554
 555         chip->dma_size = size;
 556         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 557         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 558         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 559         spin_lock_irqsave(&chip->reg_lock, flags);
 560         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 561         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 562         spin_unlock_irqrestore(&chip->reg_lock, flags);
 563         return 0;
 564 }
 565
 566 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
 567 {
 568         struct snd_ad1848 *chip = dev_id;
 569
 570         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
 571             (chip->mode & AD1848_MODE_RUNNING))
 572                 snd_pcm_period_elapsed(chip->playback_substream);
 573         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
 574             (chip->mode & AD1848_MODE_RUNNING))
 575                 snd_pcm_period_elapsed(chip->capture_substream);
 576         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
 577         return IRQ_HANDLED;
 578 }
 579
 580 static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
 581 {
 582         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 583         size_t ptr;
 584
 585         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
 586                 return 0;
 587         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 588         return bytes_to_frames(substream->runtime, ptr);
 589 }
 590
 591 static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
 592 {
 593         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 594         size_t ptr;
 595
 596         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
 597                 return 0;
 598         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 599         return bytes_to_frames(substream->runtime, ptr);
 600 }
 601
 602 /*
 603
 604  */
 605
 606 static void snd_ad1848_thinkpad_twiddle(struct snd_ad1848 *chip, int on) {
 607
 608         int tmp;
 609
 610         if (!chip->thinkpad_flag) return;
 611
 612         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
 613         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
 614
 615         if (on)
 616                 /* turn it on */
 617                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
 618         else
 619                 /* turn it off */
 620                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
 621
 622         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
 623
 624 }
 625
 626 #ifdef CONFIG_PM
 627 static void snd_ad1848_suspend(struct snd_ad1848 *chip)
 628 {
 629         snd_pcm_suspend_all(chip->pcm);
 630         if (chip->thinkpad_flag)
 631                 snd_ad1848_thinkpad_twiddle(chip, 0);
 632 }
 633
 634 static void snd_ad1848_resume(struct snd_ad1848 *chip)
 635 {
 636         int i;
 637
 638         if (chip->thinkpad_flag)
 639                 snd_ad1848_thinkpad_twiddle(chip, 1);
 640
 641         /* clear any pendings IRQ */
 642         inb(AD1848P(chip, STATUS));
 643         outb(0, AD1848P(chip, STATUS));
 644         mb();
 645
 646         snd_ad1848_mce_down(chip);
 647         for (i = 0; i < 16; i++)
 648                 snd_ad1848_out(chip, i, chip->image[i]);
 649         snd_ad1848_mce_up(chip);
 650         snd_ad1848_mce_down(chip);
 651 }
 652 #endif /* CONFIG_PM */
 653
 654 static int snd_ad1848_probe(struct snd_ad1848 * chip)
 655 {
 656         unsigned long flags;
 657         int i, id, rev, ad1847;
 658         unsigned char *ptr;
 659
 660 #if 0
 661         snd_ad1848_debug(chip);
 662 #endif
 663         id = ad1847 = 0;
 664         for (i = 0; i < 1000; i++) {
 665                 mb();
 666                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 667                         udelay(500);
 668                 else {
 669                         spin_lock_irqsave(&chip->reg_lock, flags);
 670                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 671                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
 672                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
 673                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
 674                         if (rev == 0x65) {
 675                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 676                                 id = 1;
 677                                 ad1847 = 1;
 678                                 break;
 679                         }
 680                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
 681                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 682                                 id = 1;
 683                                 break;
 684                         }
 685                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 686                 }
 687         }
 688         if (id != 1)
 689                 return -ENODEV; /* no valid device found */
 690         if (chip->hardware == AD1848_HW_DETECT) {
 691                 if (ad1847) {
 692                         chip->hardware = AD1848_HW_AD1847;
 693                 } else {
 694                         chip->hardware = AD1848_HW_AD1848;
 695                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
 696                         if (rev & 0x80) {
 697                                 chip->hardware = AD1848_HW_CS4248;
 698                         } else if ((rev & 0x0f) == 0x0a) {
 699                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
 700                                 for (i = 0; i < 16; ++i) {
 701                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
 702                                                 chip->hardware = AD1848_HW_CMI8330;
 703                                                 break;
 704                                         }
 705                                 }
 706                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 707                         }
 708                 }
 709         }
 710         spin_lock_irqsave(&chip->reg_lock, flags);
 711         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
 712         outb(0, AD1848P(chip, STATUS));
 713         mb();
 714         spin_unlock_irqrestore(&chip->reg_lock, flags);
 715
 716         chip->image[AD1848_MISC_INFO] = 0x00;
 717         chip->image[AD1848_IFACE_CTRL] =
 718             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
 719         ptr = (unsigned char *) &chip->image;
 720         snd_ad1848_mce_down(chip);
 721         spin_lock_irqsave(&chip->reg_lock, flags);
 722         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
 723                 snd_ad1848_out(chip, i, *ptr++);
 724         spin_unlock_irqrestore(&chip->reg_lock, flags);
 725         snd_ad1848_mce_up(chip);
 726         snd_ad1848_mce_down(chip);
 727         return 0;               /* all things are ok.. */
 728 }
 729
 730 /*
 731
 732  */
 733
 734 static struct snd_pcm_hardware snd_ad1848_playback =
 735 {
 736         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 737                                  SNDRV_PCM_INFO_MMAP_VALID),
 738         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 739                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 740         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 741         .rate_min =             5510,
 742         .rate_max =             48000,
 743         .channels_min =         1,
 744         .channels_max =         2,
 745         .buffer_bytes_max =     (128*1024),
 746         .period_bytes_min =     64,
 747         .period_bytes_max =     (128*1024),
 748         .periods_min =          1,
 749         .periods_max =          1024,
 750         .fifo_size =            0,
 751 };
 752
 753 static struct snd_pcm_hardware snd_ad1848_capture =
 754 {
 755         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 756                                  SNDRV_PCM_INFO_MMAP_VALID),
 757         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 758                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 759         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 760         .rate_min =             5510,
 761         .rate_max =             48000,
 762         .channels_min =         1,
 763         .channels_max =         2,
 764         .buffer_bytes_max =     (128*1024),
 765         .period_bytes_min =     64,
 766         .period_bytes_max =     (128*1024),
 767         .periods_min =          1,
 768         .periods_max =          1024,
 769         .fifo_size =            0,
 770 };
 771
 772 /*
 773
 774  */
 775
 776 static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
 777 {
 778         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 779         struct snd_pcm_runtime *runtime = substream->runtime;
 780         int err;
 781
 782         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
 783                 return err;
 784         chip->playback_substream = substream;
 785         runtime->hw = snd_ad1848_playback;
 786         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 787         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 788         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 789         return 0;
 790 }
 791
 792 static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
 793 {
 794         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 795         struct snd_pcm_runtime *runtime = substream->runtime;
 796         int err;
 797
 798         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
 799                 return err;
 800         chip->capture_substream = substream;
 801         runtime->hw = snd_ad1848_capture;
 802         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 803         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 804         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 805         return 0;
 806 }
 807
 808 static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
 809 {
 810         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 811
 812         chip->mode &= ~AD1848_MODE_PLAY;
 813         chip->playback_substream = NULL;
 814         snd_ad1848_close(chip);
 815         return 0;
 816 }
 817
 818 static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
 819 {
 820         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
 821
 822         chip->mode &= ~AD1848_MODE_CAPTURE;
 823         chip->capture_substream = NULL;
 824         snd_ad1848_close(chip);
 825         return 0;
 826 }
 827
 828 static int snd_ad1848_free(struct snd_ad1848 *chip)
 829 {
 830         release_and_free_resource(chip->res_port);
 831         if (chip->irq >= 0)
 832                 free_irq(chip->irq, (void *) chip);
 833         if (chip->dma >= 0) {
 834                 snd_dma_disable(chip->dma);
 835                 free_dma(chip->dma);
 836         }
 837         kfree(chip);
 838         return 0;
 839 }
 840
 841 static int snd_ad1848_dev_free(struct snd_device *device)
 842 {
 843         struct snd_ad1848 *chip = device->device_data;
 844         return snd_ad1848_free(chip);
 845 }
 846
 847 static const char *snd_ad1848_chip_id(struct snd_ad1848 *chip)
 848 {
 849         switch (chip->hardware) {
 850         case AD1848_HW_AD1847:  return "AD1847";
 851         case AD1848_HW_AD1848:  return "AD1848";
 852         case AD1848_HW_CS4248:  return "CS4248";
 853         case AD1848_HW_CMI8330: return "CMI8330/C3D";
 854         default:                return "???";
 855         }
 856 }
 857
 858 int snd_ad1848_create(struct snd_card *card,
 859                       unsigned long port,
 860                       int irq, int dma,
 861                       unsigned short hardware,
 862                       struct snd_ad1848 ** rchip)
 863 {
 864         static struct snd_device_ops ops = {
 865                 .dev_free =     snd_ad1848_dev_free,
 866         };
 867         struct snd_ad1848 *chip;
 868         int err;
 869
 870         *rchip = NULL;
 871         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 872         if (chip == NULL)
 873                 return -ENOMEM;
 874         spin_lock_init(&chip->reg_lock);
 875         chip->card = card;
 876         chip->port = port;
 877         chip->irq = -1;
 878         chip->dma = -1;
 879         chip->hardware = hardware;
 880         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
 881
 882         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
 883                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
 884                 snd_ad1848_free(chip);
 885                 return -EBUSY;
 886         }
 887         if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
 888                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
 889                 snd_ad1848_free(chip);
 890                 return -EBUSY;
 891         }
 892         chip->irq = irq;
 893         if (request_dma(dma, "AD1848")) {
 894                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
 895                 snd_ad1848_free(chip);
 896                 return -EBUSY;
 897         }
 898         chip->dma = dma;
 899
 900         if (hardware == AD1848_HW_THINKPAD) {
 901                 chip->thinkpad_flag = 1;
 902                 chip->hardware = AD1848_HW_DETECT; /* reset */
 903                 snd_ad1848_thinkpad_twiddle(chip, 1);
 904         }
 905
 906         if (snd_ad1848_probe(chip) < 0) {
 907                 snd_ad1848_free(chip);
 908                 return -ENODEV;
 909         }
 910
 911         /* Register device */
 912         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 913                 snd_ad1848_free(chip);
 914                 return err;
 915         }
 916
 917 #ifdef CONFIG_PM
 918         chip->suspend = snd_ad1848_suspend;
 919         chip->resume = snd_ad1848_resume;
 920 #endif
 921
 922         *rchip = chip;
 923         return 0;
 924 }
 925
 926 EXPORT_SYMBOL(snd_ad1848_create);
 927
 928 static struct snd_pcm_ops snd_ad1848_playback_ops = {
 929         .open =         snd_ad1848_playback_open,
 930         .close =        snd_ad1848_playback_close,
 931         .ioctl =        snd_ad1848_ioctl,
 932         .hw_params =    snd_ad1848_playback_hw_params,
 933         .hw_free =      snd_ad1848_playback_hw_free,
 934         .prepare =      snd_ad1848_playback_prepare,
 935         .trigger =      snd_ad1848_playback_trigger,
 936         .pointer =      snd_ad1848_playback_pointer,
 937 };
 938
 939 static struct snd_pcm_ops snd_ad1848_capture_ops = {
 940         .open =         snd_ad1848_capture_open,
 941         .close =        snd_ad1848_capture_close,
 942         .ioctl =        snd_ad1848_ioctl,
 943         .hw_params =    snd_ad1848_capture_hw_params,
 944         .hw_free =      snd_ad1848_capture_hw_free,
 945         .prepare =      snd_ad1848_capture_prepare,
 946         .trigger =      snd_ad1848_capture_trigger,
 947         .pointer =      snd_ad1848_capture_pointer,
 948 };
 949
 950 int snd_ad1848_pcm(struct snd_ad1848 *chip, int device, struct snd_pcm **rpcm)
 951 {
 952         struct snd_pcm *pcm;
 953         int err;
 954
 955         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
 956                 return err;
 957
 958         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
 959         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
 960
 961         pcm->private_data = chip;
 962         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 963         strcpy(pcm->name, snd_ad1848_chip_id(chip));
 964
 965         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 966                                               snd_dma_isa_data(),
 967                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
 968
 969         chip->pcm = pcm;
 970         if (rpcm)
 971                 *rpcm = pcm;
 972         return 0;
 973 }
 974
 975 EXPORT_SYMBOL(snd_ad1848_pcm);
 976
 977 const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
 978 {
 979         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 980                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
 981 }
 982
 983 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
 984
 985 /*
 986  *  MIXER part
 987  */
 988
 989 static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 990 {
 991         static char *texts[4] = {
 992                 "Line", "Aux", "Mic", "Mix"
 993         };
 994
 995         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 996         uinfo->count = 2;
 997         uinfo->value.enumerated.items = 4;
 998         if (uinfo->value.enumerated.item > 3)
 999                 uinfo->value.enumerated.item = 3;
1000         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1001         return 0;
1002 }
1003
1004 static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1005 {
1006         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1007         unsigned long flags;
1008
1009         spin_lock_irqsave(&chip->reg_lock, flags);
1010         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1011         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1012         spin_unlock_irqrestore(&chip->reg_lock, flags);
1013         return 0;
1014 }
1015
1016 static int snd_ad1848_put_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         unsigned short left, right;
1021         int change;
1022
1023         if (ucontrol->value.enumerated.item[0] > 3 ||
1024             ucontrol->value.enumerated.item[1] > 3)
1025                 return -EINVAL;
1026         left = ucontrol->value.enumerated.item[0] << 6;
1027         right = ucontrol->value.enumerated.item[1] << 6;
1028         spin_lock_irqsave(&chip->reg_lock, flags);
1029         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1030         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1031         change = left != chip->image[AD1848_LEFT_INPUT] ||
1032                  right != chip->image[AD1848_RIGHT_INPUT];
1033         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1034         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1035         spin_unlock_irqrestore(&chip->reg_lock, flags);
1036         return change;
1037 }
1038
1039 static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1040 {
1041         int mask = (kcontrol->private_value >> 16) & 0xff;
1042
1043         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1044         uinfo->count = 1;
1045         uinfo->value.integer.min = 0;
1046         uinfo->value.integer.max = mask;
1047         return 0;
1048 }
1049
1050 static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1051 {
1052         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1053         unsigned long flags;
1054         int reg = kcontrol->private_value & 0xff;
1055         int shift = (kcontrol->private_value >> 8) & 0xff;
1056         int mask = (kcontrol->private_value >> 16) & 0xff;
1057         int invert = (kcontrol->private_value >> 24) & 0xff;
1058
1059         spin_lock_irqsave(&chip->reg_lock, flags);
1060         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1061         spin_unlock_irqrestore(&chip->reg_lock, flags);
1062         if (invert)
1063                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1064         return 0;
1065 }
1066
1067 static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1068 {
1069         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1070         unsigned long flags;
1071         int reg = kcontrol->private_value & 0xff;
1072         int shift = (kcontrol->private_value >> 8) & 0xff;
1073         int mask = (kcontrol->private_value >> 16) & 0xff;
1074         int invert = (kcontrol->private_value >> 24) & 0xff;
1075         int change;
1076         unsigned short val;
1077
1078         val = (ucontrol->value.integer.value[0] & mask);
1079         if (invert)
1080                 val = mask - val;
1081         val <<= shift;
1082         spin_lock_irqsave(&chip->reg_lock, flags);
1083         val = (chip->image[reg] & ~(mask << shift)) | val;
1084         change = val != chip->image[reg];
1085         snd_ad1848_out(chip, reg, val);
1086         spin_unlock_irqrestore(&chip->reg_lock, flags);
1087         return change;
1088 }
1089
1090 static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1091 {
1092         int mask = (kcontrol->private_value >> 24) & 0xff;
1093
1094         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1095         uinfo->count = 2;
1096         uinfo->value.integer.min = 0;
1097         uinfo->value.integer.max = mask;
1098         return 0;
1099 }
1100
1101 static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1102 {
1103         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1104         unsigned long flags;
1105         int left_reg = kcontrol->private_value & 0xff;
1106         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1107         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1108         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1109         int mask = (kcontrol->private_value >> 24) & 0xff;
1110         int invert = (kcontrol->private_value >> 22) & 1;
1111
1112         spin_lock_irqsave(&chip->reg_lock, flags);
1113         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1114         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1115         spin_unlock_irqrestore(&chip->reg_lock, flags);
1116         if (invert) {
1117                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1118                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1119         }
1120         return 0;
1121 }
1122
1123 static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1124 {
1125         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1126         unsigned long flags;
1127         int left_reg = kcontrol->private_value & 0xff;
1128         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1129         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1130         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1131         int mask = (kcontrol->private_value >> 24) & 0xff;
1132         int invert = (kcontrol->private_value >> 22) & 1;
1133         int change;
1134         unsigned short val1, val2;
1135
1136         val1 = ucontrol->value.integer.value[0] & mask;
1137         val2 = ucontrol->value.integer.value[1] & mask;
1138         if (invert) {
1139                 val1 = mask - val1;
1140                 val2 = mask - val2;
1141         }
1142         val1 <<= shift_left;
1143         val2 <<= shift_right;
1144         spin_lock_irqsave(&chip->reg_lock, flags);
1145         if (left_reg != right_reg) {
1146                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1147                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1148                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1149                 snd_ad1848_out(chip, left_reg, val1);
1150                 snd_ad1848_out(chip, right_reg, val2);
1151         } else {
1152                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1153                 change = val1 != chip->image[left_reg];
1154                 snd_ad1848_out(chip, left_reg, val1);
1155         }
1156         spin_unlock_irqrestore(&chip->reg_lock, flags);
1157         return change;
1158 }
1159
1160 /*
1161  */
1162 int snd_ad1848_add_ctl_elem(struct snd_ad1848 *chip,
1163                             const struct ad1848_mix_elem *c)
1164 {
1165         static struct snd_kcontrol_new newctls[] = {
1166                 [AD1848_MIX_SINGLE] = {
1167                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1168                         .info = snd_ad1848_info_single,
1169                         .get = snd_ad1848_get_single,
1170                         .put = snd_ad1848_put_single,
1171                 },
1172                 [AD1848_MIX_DOUBLE] = {
1173                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1174                         .info = snd_ad1848_info_double,
1175                         .get = snd_ad1848_get_double,
1176                         .put = snd_ad1848_put_double,
1177                 },
1178                 [AD1848_MIX_CAPTURE] = {
1179                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1180                         .info = snd_ad1848_info_mux,
1181                         .get = snd_ad1848_get_mux,
1182                         .put = snd_ad1848_put_mux,
1183                 },
1184         };
1185         struct snd_kcontrol *ctl;
1186         int err;
1187
1188         ctl = snd_ctl_new1(&newctls[c->type], chip);
1189         if (! ctl)
1190                 return -ENOMEM;
1191         strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
1192         ctl->id.index = c->index;
1193         ctl->private_value = c->private_value;
1194         if (c->tlv) {
1195                 ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1196                 ctl->tlv.p = c->tlv;
1197         }
1198         if ((err = snd_ctl_add(chip->card, ctl)) < 0)
1199                 return err;
1200         return 0;
1201 }
1202
1203 EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
1204
1205 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
1206 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
1207 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
1208
1209 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1210 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1211 AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
1212                   db_scale_6bit),
1213 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1214 AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
1215                   db_scale_5bit_12db_max),
1216 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1217 AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
1218                   db_scale_5bit_12db_max),
1219 AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
1220                   db_scale_rec_gain),
1221 {
1222         .name = "Capture Source",
1223         .type = AD1848_MIX_CAPTURE,
1224 },
1225 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1226 AD1848_SINGLE_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
1227                   db_scale_6bit),
1228 };
1229
1230 int snd_ad1848_mixer(struct snd_ad1848 *chip)
1231 {
1232         struct snd_card *card;
1233         struct snd_pcm *pcm;
1234         unsigned int idx;
1235         int err;
1236
1237         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1238
1239         pcm = chip->pcm;
1240         card = chip->card;
1241
1242         strcpy(card->mixername, pcm->name);
1243
1244         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1245                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1246                         return err;
1247
1248         return 0;
1249 }
1250
1251 EXPORT_SYMBOL(snd_ad1848_mixer);
1252
1253 /*
1254  *  INIT part
1255  */
1256
1257 static int __init alsa_ad1848_init(void)
1258 {
1259         return 0;
1260 }
1261
1262 static void __exit alsa_ad1848_exit(void)
1263 {
1264 }
1265
1266 module_init(alsa_ad1848_init)
1267 module_exit(alsa_ad1848_exit)