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_wss *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_wss *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_wss *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_wss *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_wss *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_wss *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_wss *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_wss *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_wss *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_wss *chip,
 365                                        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_wss *chip, unsigned int mode)
 378 {
 379         unsigned long flags;
 380
 381         if (chip->mode & AD1848_MODE_OPEN)
 382                 return -EAGAIN;
 383
 384         snd_ad1848_mce_down(chip);
 385
 386 #ifdef SNDRV_DEBUG_MCE
 387         snd_printk("open: (1)\n");
 388 #endif
 389         snd_ad1848_mce_up(chip);
 390         spin_lock_irqsave(&chip->reg_lock, flags);
 391         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 392                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
 393                              AD1848_CALIB_MODE);
 394         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
 395         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 396         spin_unlock_irqrestore(&chip->reg_lock, flags);
 397         snd_ad1848_mce_down(chip);
 398
 399 #ifdef SNDRV_DEBUG_MCE
 400         snd_printk("open: (2)\n");
 401 #endif
 402
 403         snd_ad1848_set_data_format(chip, NULL);
 404
 405         snd_ad1848_mce_up(chip);
 406         spin_lock_irqsave(&chip->reg_lock, flags);
 407         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 408         spin_unlock_irqrestore(&chip->reg_lock, flags);
 409         snd_ad1848_mce_down(chip);
 410
 411 #ifdef SNDRV_DEBUG_MCE
 412         snd_printk("open: (3)\n");
 413 #endif
 414
 415         /* ok. now enable and ack CODEC IRQ */
 416         spin_lock_irqsave(&chip->reg_lock, flags);
 417         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 418         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 419         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
 420         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 421         spin_unlock_irqrestore(&chip->reg_lock, flags);
 422
 423         chip->mode = mode;
 424
 425         return 0;
 426 }
 427
 428 static void snd_ad1848_close(struct snd_wss *chip)
 429 {
 430         unsigned long flags;
 431
 432         if (!chip->mode)
 433                 return;
 434         /* disable IRQ */
 435         spin_lock_irqsave(&chip->reg_lock, flags);
 436         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 437         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 438         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
 439         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 440         spin_unlock_irqrestore(&chip->reg_lock, flags);
 441
 442         /* now disable capture & playback */
 443
 444         snd_ad1848_mce_up(chip);
 445         spin_lock_irqsave(&chip->reg_lock, flags);
 446         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 447                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 448         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 449         spin_unlock_irqrestore(&chip->reg_lock, flags);
 450         snd_ad1848_mce_down(chip);
 451
 452         /* clear IRQ again */
 453         spin_lock_irqsave(&chip->reg_lock, flags);
 454         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 455         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 456         spin_unlock_irqrestore(&chip->reg_lock, flags);
 457
 458         chip->mode = 0;
 459 }
 460
 461 /*
 462  *  ok.. exported functions..
 463  */
 464
 465 static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
 466                                        int cmd)
 467 {
 468         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 469         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
 470 }
 471
 472 static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
 473                                       int cmd)
 474 {
 475         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 476         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
 477 }
 478
 479 static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
 480                                          struct snd_pcm_hw_params *hw_params)
 481 {
 482         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 483         unsigned long flags;
 484         int err;
 485
 486         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 487                 return err;
 488         snd_ad1848_calibrate_mute(chip, 1);
 489         snd_ad1848_set_data_format(chip, hw_params);
 490         snd_ad1848_mce_up(chip);
 491         spin_lock_irqsave(&chip->reg_lock, flags);
 492         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 493         spin_unlock_irqrestore(&chip->reg_lock, flags);
 494         snd_ad1848_mce_down(chip);
 495         snd_ad1848_calibrate_mute(chip, 0);
 496         return 0;
 497 }
 498
 499 static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
 500 {
 501         return snd_pcm_lib_free_pages(substream);
 502 }
 503
 504 static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
 505 {
 506         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 507         struct snd_pcm_runtime *runtime = substream->runtime;
 508         unsigned long flags;
 509         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 510         unsigned int count = snd_pcm_lib_period_bytes(substream);
 511
 512         chip->p_dma_size = size;
 513         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
 514         snd_dma_program(chip->dma1, runtime->dma_addr, size,
 515                         DMA_MODE_WRITE | DMA_AUTOINIT);
 516         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 517         spin_lock_irqsave(&chip->reg_lock, flags);
 518         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 519         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 520         spin_unlock_irqrestore(&chip->reg_lock, flags);
 521         return 0;
 522 }
 523
 524 static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
 525                                         struct snd_pcm_hw_params *hw_params)
 526 {
 527         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 528         unsigned long flags;
 529         int err;
 530
 531         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 532                 return err;
 533         snd_ad1848_calibrate_mute(chip, 1);
 534         snd_ad1848_set_data_format(chip, hw_params);
 535         snd_ad1848_mce_up(chip);
 536         spin_lock_irqsave(&chip->reg_lock, flags);
 537         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 538         spin_unlock_irqrestore(&chip->reg_lock, flags);
 539         snd_ad1848_mce_down(chip);
 540         snd_ad1848_calibrate_mute(chip, 0);
 541         return 0;
 542 }
 543
 544 static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
 545 {
 546         return snd_pcm_lib_free_pages(substream);
 547 }
 548
 549 static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
 550 {
 551         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 552         struct snd_pcm_runtime *runtime = substream->runtime;
 553         unsigned long flags;
 554         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 555         unsigned int count = snd_pcm_lib_period_bytes(substream);
 556
 557         chip->c_dma_size = size;
 558         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 559         snd_dma_program(chip->dma2, runtime->dma_addr, size,
 560                         DMA_MODE_READ | DMA_AUTOINIT);
 561         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 562         spin_lock_irqsave(&chip->reg_lock, flags);
 563         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 564         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 565         spin_unlock_irqrestore(&chip->reg_lock, flags);
 566         return 0;
 567 }
 568
 569 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
 570 {
 571         struct snd_wss *chip = dev_id;
 572
 573         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
 574             (chip->mode & AD1848_MODE_RUNNING))
 575                 snd_pcm_period_elapsed(chip->playback_substream);
 576         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
 577             (chip->mode & AD1848_MODE_RUNNING))
 578                 snd_pcm_period_elapsed(chip->capture_substream);
 579         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
 580         return IRQ_HANDLED;
 581 }
 582
 583 static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
 584 {
 585         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 586         size_t ptr;
 587
 588         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
 589                 return 0;
 590         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
 591         return bytes_to_frames(substream->runtime, ptr);
 592 }
 593
 594 static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
 595 {
 596         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 597         size_t ptr;
 598
 599         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
 600                 return 0;
 601         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
 602         return bytes_to_frames(substream->runtime, ptr);
 603 }
 604
 605 /*
 606
 607  */
 608
 609 static void snd_ad1848_thinkpad_twiddle(struct snd_wss *chip, int on)
 610 {
 611         int tmp;
 612
 613         if (!chip->thinkpad_flag) return;
 614
 615         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
 616         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
 617
 618         if (on)
 619                 /* turn it on */
 620                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
 621         else
 622                 /* turn it off */
 623                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
 624
 625         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
 626
 627 }
 628
 629 #ifdef CONFIG_PM
 630 static void snd_ad1848_suspend(struct snd_wss *chip)
 631 {
 632         snd_pcm_suspend_all(chip->pcm);
 633         if (chip->thinkpad_flag)
 634                 snd_ad1848_thinkpad_twiddle(chip, 0);
 635 }
 636
 637 static void snd_ad1848_resume(struct snd_wss *chip)
 638 {
 639         int i;
 640
 641         if (chip->thinkpad_flag)
 642                 snd_ad1848_thinkpad_twiddle(chip, 1);
 643
 644         /* clear any pendings IRQ */
 645         inb(AD1848P(chip, STATUS));
 646         outb(0, AD1848P(chip, STATUS));
 647         mb();
 648
 649         snd_ad1848_mce_down(chip);
 650         for (i = 0; i < 16; i++)
 651                 snd_ad1848_out(chip, i, chip->image[i]);
 652         snd_ad1848_mce_up(chip);
 653         snd_ad1848_mce_down(chip);
 654 }
 655 #endif /* CONFIG_PM */
 656
 657 static int snd_ad1848_probe(struct snd_wss *chip)
 658 {
 659         unsigned long flags;
 660         int i, id, rev, ad1847;
 661         unsigned char *ptr;
 662
 663 #if 0
 664         snd_ad1848_debug(chip);
 665 #endif
 666         id = ad1847 = 0;
 667         for (i = 0; i < 1000; i++) {
 668                 mb();
 669                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 670                         udelay(500);
 671                 else {
 672                         spin_lock_irqsave(&chip->reg_lock, flags);
 673                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 674                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
 675                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
 676                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
 677                         if (rev == 0x65) {
 678                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 679                                 id = 1;
 680                                 ad1847 = 1;
 681                                 break;
 682                         }
 683                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
 684                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 685                                 id = 1;
 686                                 break;
 687                         }
 688                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 689                 }
 690         }
 691         if (id != 1)
 692                 return -ENODEV; /* no valid device found */
 693         if (chip->hardware == AD1848_HW_DETECT) {
 694                 if (ad1847) {
 695                         chip->hardware = AD1848_HW_AD1847;
 696                 } else {
 697                         chip->hardware = AD1848_HW_AD1848;
 698                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
 699                         if (rev & 0x80) {
 700                                 chip->hardware = AD1848_HW_CS4248;
 701                         } else if ((rev & 0x0f) == 0x0a) {
 702                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
 703                                 for (i = 0; i < 16; ++i) {
 704                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
 705                                                 chip->hardware = AD1848_HW_CMI8330;
 706                                                 break;
 707                                         }
 708                                 }
 709                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 710                         }
 711                 }
 712         }
 713         spin_lock_irqsave(&chip->reg_lock, flags);
 714         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
 715         outb(0, AD1848P(chip, STATUS));
 716         mb();
 717         spin_unlock_irqrestore(&chip->reg_lock, flags);
 718
 719         chip->image[AD1848_MISC_INFO] = 0x00;
 720         chip->image[AD1848_IFACE_CTRL] =
 721             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
 722         ptr = (unsigned char *) &chip->image;
 723         snd_ad1848_mce_down(chip);
 724         spin_lock_irqsave(&chip->reg_lock, flags);
 725         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
 726                 snd_ad1848_out(chip, i, *ptr++);
 727         spin_unlock_irqrestore(&chip->reg_lock, flags);
 728         snd_ad1848_mce_up(chip);
 729         snd_ad1848_mce_down(chip);
 730         return 0;               /* all things are ok.. */
 731 }
 732
 733 /*
 734
 735  */
 736
 737 static struct snd_pcm_hardware snd_ad1848_playback =
 738 {
 739         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 740                                  SNDRV_PCM_INFO_MMAP_VALID),
 741         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 742                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 743         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 744         .rate_min =             5510,
 745         .rate_max =             48000,
 746         .channels_min =         1,
 747         .channels_max =         2,
 748         .buffer_bytes_max =     (128*1024),
 749         .period_bytes_min =     64,
 750         .period_bytes_max =     (128*1024),
 751         .periods_min =          1,
 752         .periods_max =          1024,
 753         .fifo_size =            0,
 754 };
 755
 756 static struct snd_pcm_hardware snd_ad1848_capture =
 757 {
 758         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 759                                  SNDRV_PCM_INFO_MMAP_VALID),
 760         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 761                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 762         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 763         .rate_min =             5510,
 764         .rate_max =             48000,
 765         .channels_min =         1,
 766         .channels_max =         2,
 767         .buffer_bytes_max =     (128*1024),
 768         .period_bytes_min =     64,
 769         .period_bytes_max =     (128*1024),
 770         .periods_min =          1,
 771         .periods_max =          1024,
 772         .fifo_size =            0,
 773 };
 774
 775 /*
 776
 777  */
 778
 779 static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
 780 {
 781         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 782         struct snd_pcm_runtime *runtime = substream->runtime;
 783         int err;
 784
 785         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
 786                 return err;
 787         chip->playback_substream = substream;
 788         runtime->hw = snd_ad1848_playback;
 789         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
 790         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
 791         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 792         return 0;
 793 }
 794
 795 static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
 796 {
 797         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 798         struct snd_pcm_runtime *runtime = substream->runtime;
 799         int err;
 800
 801         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
 802                 return err;
 803         chip->capture_substream = substream;
 804         runtime->hw = snd_ad1848_capture;
 805         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
 806         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
 807         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 808         return 0;
 809 }
 810
 811 static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
 812 {
 813         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 814
 815         chip->mode &= ~AD1848_MODE_PLAY;
 816         chip->playback_substream = NULL;
 817         snd_ad1848_close(chip);
 818         return 0;
 819 }
 820
 821 static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
 822 {
 823         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 824
 825         chip->mode &= ~AD1848_MODE_CAPTURE;
 826         chip->capture_substream = NULL;
 827         snd_ad1848_close(chip);
 828         return 0;
 829 }
 830
 831 static int snd_ad1848_free(struct snd_wss *chip)
 832 {
 833         release_and_free_resource(chip->res_port);
 834         if (chip->irq >= 0)
 835                 free_irq(chip->irq, (void *) chip);
 836         if (chip->dma1 >= 0) {
 837                 snd_dma_disable(chip->dma1);
 838                 free_dma(chip->dma1);
 839         }
 840         kfree(chip);
 841         return 0;
 842 }
 843
 844 static int snd_ad1848_dev_free(struct snd_device *device)
 845 {
 846         struct snd_wss *chip = device->device_data;
 847         return snd_ad1848_free(chip);
 848 }
 849
 850 static const char *snd_ad1848_chip_id(struct snd_wss *chip)
 851 {
 852         switch (chip->hardware) {
 853         case AD1848_HW_AD1847:  return "AD1847";
 854         case AD1848_HW_AD1848:  return "AD1848";
 855         case AD1848_HW_CS4248:  return "CS4248";
 856         case AD1848_HW_CMI8330: return "CMI8330/C3D";
 857         default:                return "???";
 858         }
 859 }
 860
 861 int snd_ad1848_create(struct snd_card *card,
 862                       unsigned long port,
 863                       int irq, int dma,
 864                       unsigned short hardware,
 865                       struct snd_wss **rchip)
 866 {
 867         static struct snd_device_ops ops = {
 868                 .dev_free =     snd_ad1848_dev_free,
 869         };
 870         struct snd_wss *chip;
 871         int err;
 872
 873         *rchip = NULL;
 874         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 875         if (chip == NULL)
 876                 return -ENOMEM;
 877         spin_lock_init(&chip->reg_lock);
 878         chip->card = card;
 879         chip->port = port;
 880         chip->irq = -1;
 881         chip->dma1 = -1;
 882         chip->dma2 = -1;
 883         chip->single_dma = 1;
 884         chip->hardware = hardware;
 885         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
 886
 887         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
 888                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
 889                 snd_ad1848_free(chip);
 890                 return -EBUSY;
 891         }
 892         if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
 893                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
 894                 snd_ad1848_free(chip);
 895                 return -EBUSY;
 896         }
 897         chip->irq = irq;
 898         if (request_dma(dma, "AD1848")) {
 899                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
 900                 snd_ad1848_free(chip);
 901                 return -EBUSY;
 902         }
 903         chip->dma1 = dma;
 904         chip->dma2 = dma;
 905
 906         if (hardware == AD1848_HW_THINKPAD) {
 907                 chip->thinkpad_flag = 1;
 908                 chip->hardware = AD1848_HW_DETECT; /* reset */
 909                 snd_ad1848_thinkpad_twiddle(chip, 1);
 910         }
 911
 912         if (snd_ad1848_probe(chip) < 0) {
 913                 snd_ad1848_free(chip);
 914                 return -ENODEV;
 915         }
 916
 917         /* Register device */
 918         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 919                 snd_ad1848_free(chip);
 920                 return err;
 921         }
 922
 923 #ifdef CONFIG_PM
 924         chip->suspend = snd_ad1848_suspend;
 925         chip->resume = snd_ad1848_resume;
 926 #endif
 927
 928         *rchip = chip;
 929         return 0;
 930 }
 931
 932 EXPORT_SYMBOL(snd_ad1848_create);
 933
 934 static struct snd_pcm_ops snd_ad1848_playback_ops = {
 935         .open =         snd_ad1848_playback_open,
 936         .close =        snd_ad1848_playback_close,
 937         .ioctl =        snd_ad1848_ioctl,
 938         .hw_params =    snd_ad1848_playback_hw_params,
 939         .hw_free =      snd_ad1848_playback_hw_free,
 940         .prepare =      snd_ad1848_playback_prepare,
 941         .trigger =      snd_ad1848_playback_trigger,
 942         .pointer =      snd_ad1848_playback_pointer,
 943 };
 944
 945 static struct snd_pcm_ops snd_ad1848_capture_ops = {
 946         .open =         snd_ad1848_capture_open,
 947         .close =        snd_ad1848_capture_close,
 948         .ioctl =        snd_ad1848_ioctl,
 949         .hw_params =    snd_ad1848_capture_hw_params,
 950         .hw_free =      snd_ad1848_capture_hw_free,
 951         .prepare =      snd_ad1848_capture_prepare,
 952         .trigger =      snd_ad1848_capture_trigger,
 953         .pointer =      snd_ad1848_capture_pointer,
 954 };
 955
 956 int snd_ad1848_pcm(struct snd_wss *chip, int device, struct snd_pcm **rpcm)
 957 {
 958         struct snd_pcm *pcm;
 959         int err;
 960
 961         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
 962                 return err;
 963
 964         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
 965         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
 966
 967         pcm->private_data = chip;
 968         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 969         strcpy(pcm->name, snd_ad1848_chip_id(chip));
 970
 971         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 972                                               snd_dma_isa_data(),
 973                                               64 * 1024,
 974                                               chip->dma1 > 3 ?
 975                                                         128 * 1024 : 64 * 1024);
 976
 977         chip->pcm = pcm;
 978         if (rpcm)
 979                 *rpcm = pcm;
 980         return 0;
 981 }
 982
 983 EXPORT_SYMBOL(snd_ad1848_pcm);
 984
 985 const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
 986 {
 987         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 988                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
 989 }
 990
 991 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
 992
 993 /*
 994  *  MIXER part
 995  */
 996
 997 static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 998 {
 999         static char *texts[4] = {
1000                 "Line", "Aux", "Mic", "Mix"
1001         };
1002
1003         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1004         uinfo->count = 2;
1005         uinfo->value.enumerated.items = 4;
1006         if (uinfo->value.enumerated.item > 3)
1007                 uinfo->value.enumerated.item = 3;
1008         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1009         return 0;
1010 }
1011
1012 static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1013 {
1014         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1015         unsigned long flags;
1016
1017         spin_lock_irqsave(&chip->reg_lock, flags);
1018         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1019         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1020         spin_unlock_irqrestore(&chip->reg_lock, flags);
1021         return 0;
1022 }
1023
1024 static int snd_ad1848_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1025 {
1026         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1027         unsigned long flags;
1028         unsigned short left, right;
1029         int change;
1030
1031         if (ucontrol->value.enumerated.item[0] > 3 ||
1032             ucontrol->value.enumerated.item[1] > 3)
1033                 return -EINVAL;
1034         left = ucontrol->value.enumerated.item[0] << 6;
1035         right = ucontrol->value.enumerated.item[1] << 6;
1036         spin_lock_irqsave(&chip->reg_lock, flags);
1037         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1038         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1039         change = left != chip->image[AD1848_LEFT_INPUT] ||
1040                  right != chip->image[AD1848_RIGHT_INPUT];
1041         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1042         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1043         spin_unlock_irqrestore(&chip->reg_lock, flags);
1044         return change;
1045 }
1046
1047 static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1048 {
1049         int mask = (kcontrol->private_value >> 16) & 0xff;
1050
1051         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1052         uinfo->count = 1;
1053         uinfo->value.integer.min = 0;
1054         uinfo->value.integer.max = mask;
1055         return 0;
1056 }
1057
1058 static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1059 {
1060         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1061         unsigned long flags;
1062         int reg = kcontrol->private_value & 0xff;
1063         int shift = (kcontrol->private_value >> 8) & 0xff;
1064         int mask = (kcontrol->private_value >> 16) & 0xff;
1065         int invert = (kcontrol->private_value >> 24) & 0xff;
1066
1067         spin_lock_irqsave(&chip->reg_lock, flags);
1068         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1069         spin_unlock_irqrestore(&chip->reg_lock, flags);
1070         if (invert)
1071                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1072         return 0;
1073 }
1074
1075 static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1076 {
1077         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1078         unsigned long flags;
1079         int reg = kcontrol->private_value & 0xff;
1080         int shift = (kcontrol->private_value >> 8) & 0xff;
1081         int mask = (kcontrol->private_value >> 16) & 0xff;
1082         int invert = (kcontrol->private_value >> 24) & 0xff;
1083         int change;
1084         unsigned short val;
1085
1086         val = (ucontrol->value.integer.value[0] & mask);
1087         if (invert)
1088                 val = mask - val;
1089         val <<= shift;
1090         spin_lock_irqsave(&chip->reg_lock, flags);
1091         val = (chip->image[reg] & ~(mask << shift)) | val;
1092         change = val != chip->image[reg];
1093         snd_ad1848_out(chip, reg, val);
1094         spin_unlock_irqrestore(&chip->reg_lock, flags);
1095         return change;
1096 }
1097
1098 static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1099 {
1100         int mask = (kcontrol->private_value >> 24) & 0xff;
1101
1102         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1103         uinfo->count = 2;
1104         uinfo->value.integer.min = 0;
1105         uinfo->value.integer.max = mask;
1106         return 0;
1107 }
1108
1109 static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1110 {
1111         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1112         unsigned long flags;
1113         int left_reg = kcontrol->private_value & 0xff;
1114         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1115         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1116         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1117         int mask = (kcontrol->private_value >> 24) & 0xff;
1118         int invert = (kcontrol->private_value >> 22) & 1;
1119
1120         spin_lock_irqsave(&chip->reg_lock, flags);
1121         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1122         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1123         spin_unlock_irqrestore(&chip->reg_lock, flags);
1124         if (invert) {
1125                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1126                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1127         }
1128         return 0;
1129 }
1130
1131 static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1132 {
1133         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1134         unsigned long flags;
1135         int left_reg = kcontrol->private_value & 0xff;
1136         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1137         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1138         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1139         int mask = (kcontrol->private_value >> 24) & 0xff;
1140         int invert = (kcontrol->private_value >> 22) & 1;
1141         int change;
1142         unsigned short val1, val2;
1143
1144         val1 = ucontrol->value.integer.value[0] & mask;
1145         val2 = ucontrol->value.integer.value[1] & mask;
1146         if (invert) {
1147                 val1 = mask - val1;
1148                 val2 = mask - val2;
1149         }
1150         val1 <<= shift_left;
1151         val2 <<= shift_right;
1152         spin_lock_irqsave(&chip->reg_lock, flags);
1153         if (left_reg != right_reg) {
1154                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1155                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1156                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1157                 snd_ad1848_out(chip, left_reg, val1);
1158                 snd_ad1848_out(chip, right_reg, val2);
1159         } else {
1160                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1161                 change = val1 != chip->image[left_reg];
1162                 snd_ad1848_out(chip, left_reg, val1);
1163         }
1164         spin_unlock_irqrestore(&chip->reg_lock, flags);
1165         return change;
1166 }
1167
1168 /*
1169  */
1170 int snd_ad1848_add_ctl_elem(struct snd_wss *chip,
1171                             const struct ad1848_mix_elem *c)
1172 {
1173         static struct snd_kcontrol_new newctls[] = {
1174                 [AD1848_MIX_SINGLE] = {
1175                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1176                         .info = snd_ad1848_info_single,
1177                         .get = snd_ad1848_get_single,
1178                         .put = snd_ad1848_put_single,
1179                 },
1180                 [AD1848_MIX_DOUBLE] = {
1181                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1182                         .info = snd_ad1848_info_double,
1183                         .get = snd_ad1848_get_double,
1184                         .put = snd_ad1848_put_double,
1185                 },
1186                 [AD1848_MIX_CAPTURE] = {
1187                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1188                         .info = snd_ad1848_info_mux,
1189                         .get = snd_ad1848_get_mux,
1190                         .put = snd_ad1848_put_mux,
1191                 },
1192         };
1193         struct snd_kcontrol *ctl;
1194         int err;
1195
1196         ctl = snd_ctl_new1(&newctls[c->type], chip);
1197         if (! ctl)
1198                 return -ENOMEM;
1199         strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
1200         ctl->id.index = c->index;
1201         ctl->private_value = c->private_value;
1202         if (c->tlv) {
1203                 ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1204                 ctl->tlv.p = c->tlv;
1205         }
1206         if ((err = snd_ctl_add(chip->card, ctl)) < 0)
1207                 return err;
1208         return 0;
1209 }
1210
1211 EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
1212
1213 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
1214 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
1215 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
1216
1217 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1218 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1219 AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
1220                   db_scale_6bit),
1221 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1222 AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
1223                   db_scale_5bit_12db_max),
1224 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1225 AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
1226                   db_scale_5bit_12db_max),
1227 AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
1228                   db_scale_rec_gain),
1229 {
1230         .name = "Capture Source",
1231         .type = AD1848_MIX_CAPTURE,
1232 },
1233 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1234 AD1848_SINGLE_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
1235                   db_scale_6bit),
1236 };
1237
1238 int snd_ad1848_mixer(struct snd_wss *chip)
1239 {
1240         struct snd_card *card;
1241         struct snd_pcm *pcm;
1242         unsigned int idx;
1243         int err;
1244
1245         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1246
1247         pcm = chip->pcm;
1248         card = chip->card;
1249
1250         strcpy(card->mixername, pcm->name);
1251
1252         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1253                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1254                         return err;
1255
1256         return 0;
1257 }
1258
1259 EXPORT_SYMBOL(snd_ad1848_mixer);
1260
1261 /*
1262  *  INIT part
1263  */
1264
1265 static int __init alsa_ad1848_init(void)
1266 {
1267         return 0;
1268 }
1269
1270 static void __exit alsa_ad1848_exit(void)
1271 {
1272 }
1273
1274 module_init(alsa_ad1848_init)
1275 module_exit(alsa_ad1848_exit)