sound/isa/cs423x/cs4231_lib.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   3  *  Routines for control of CS4231(A)/CS4232/InterWave & compatible chips
   4  *
   5  *  Bugs:
   6  *     - sometimes record brokes playback with WSS portion of
   7  *       Yamaha OPL3-SA3 chip
   8  *     - CS4231 (GUS MAX) - still trouble with occasional noises
   9  *                        - broken initialization?
  10  *
  11  *   This program is free software; you can redistribute it and/or modify
  12  *   it under the terms of the GNU General Public License as published by
  13  *   the Free Software Foundation; either version 2 of the License, or
  14  *   (at your option) any later version.
  15  *
  16  *   This program is distributed in the hope that it will be useful,
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *   GNU General Public License for more details.
  20  *
  21  *   You should have received a copy of the GNU General Public License
  22  *   along with this program; if not, write to the Free Software
  23  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  24  *
  25  */
  26
  27 #include <sound/driver.h>
  28 #include <linux/delay.h>
  29 #include <linux/pm.h>
  30 #include <linux/init.h>
  31 #include <linux/interrupt.h>
  32 #include <linux/slab.h>
  33 #include <linux/ioport.h>
  34 #include <sound/core.h>
  35 #include <sound/cs4231.h>
  36 #include <sound/pcm_params.h>
  37
  38 #include <asm/io.h>
  39 #include <asm/dma.h>
  40 #include <asm/irq.h>
  41
  42 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  43 MODULE_DESCRIPTION("Routines for control of CS4231(A)/CS4232/InterWave & compatible chips");
  44 MODULE_LICENSE("GPL");
  45
  46 #if 0
  47 #define SNDRV_DEBUG_MCE
  48 #endif
  49
  50 /*
  51  *  Some variables
  52  */
  53
  54 static unsigned char freq_bits[14] = {
  55         /* 5510 */      0x00 | CS4231_XTAL2,
  56         /* 6620 */      0x0E | CS4231_XTAL2,
  57         /* 8000 */      0x00 | CS4231_XTAL1,
  58         /* 9600 */      0x0E | CS4231_XTAL1,
  59         /* 11025 */     0x02 | CS4231_XTAL2,
  60         /* 16000 */     0x02 | CS4231_XTAL1,
  61         /* 18900 */     0x04 | CS4231_XTAL2,
  62         /* 22050 */     0x06 | CS4231_XTAL2,
  63         /* 27042 */     0x04 | CS4231_XTAL1,
  64         /* 32000 */     0x06 | CS4231_XTAL1,
  65         /* 33075 */     0x0C | CS4231_XTAL2,
  66         /* 37800 */     0x08 | CS4231_XTAL2,
  67         /* 44100 */     0x0A | CS4231_XTAL2,
  68         /* 48000 */     0x0C | CS4231_XTAL1
  69 };
  70
  71 static unsigned int rates[14] = {
  72         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
  73         27042, 32000, 33075, 37800, 44100, 48000
  74 };
  75
  76 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
  77         .count = ARRAY_SIZE(rates),
  78         .list = rates,
  79         .mask = 0,
  80 };
  81
  82 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
  83 {
  84         return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
  85 }
  86
  87 static unsigned char snd_cs4231_original_image[32] =
  88 {
  89         0x00,                   /* 00/00 - lic */
  90         0x00,                   /* 01/01 - ric */
  91         0x9f,                   /* 02/02 - la1ic */
  92         0x9f,                   /* 03/03 - ra1ic */
  93         0x9f,                   /* 04/04 - la2ic */
  94         0x9f,                   /* 05/05 - ra2ic */
  95         0xbf,                   /* 06/06 - loc */
  96         0xbf,                   /* 07/07 - roc */
  97         0x20,                   /* 08/08 - pdfr */
  98         CS4231_AUTOCALIB,       /* 09/09 - ic */
  99         0x00,                   /* 0a/10 - pc */
 100         0x00,                   /* 0b/11 - ti */
 101         CS4231_MODE2,           /* 0c/12 - mi */
 102         0xfc,                   /* 0d/13 - lbc */
 103         0x00,                   /* 0e/14 - pbru */
 104         0x00,                   /* 0f/15 - pbrl */
 105         0x80,                   /* 10/16 - afei */
 106         0x01,                   /* 11/17 - afeii */
 107         0x9f,                   /* 12/18 - llic */
 108         0x9f,                   /* 13/19 - rlic */
 109         0x00,                   /* 14/20 - tlb */
 110         0x00,                   /* 15/21 - thb */
 111         0x00,                   /* 16/22 - la3mic/reserved */
 112         0x00,                   /* 17/23 - ra3mic/reserved */
 113         0x00,                   /* 18/24 - afs */
 114         0x00,                   /* 19/25 - lamoc/version */
 115         0xcf,                   /* 1a/26 - mioc */
 116         0x00,                   /* 1b/27 - ramoc/reserved */
 117         0x20,                   /* 1c/28 - cdfr */
 118         0x00,                   /* 1d/29 - res4 */
 119         0x00,                   /* 1e/30 - cbru */
 120         0x00,                   /* 1f/31 - cbrl */
 121 };
 122
 123 /*
 124  *  Basic I/O functions
 125  */
 126
 127 static inline void cs4231_outb(struct snd_cs4231 *chip, u8 offset, u8 val)
 128 {
 129         outb(val, chip->port + offset);
 130 }
 131
 132 static inline u8 cs4231_inb(struct snd_cs4231 *chip, u8 offset)
 133 {
 134         return inb(chip->port + offset);
 135 }
 136
 137 static void snd_cs4231_wait(struct snd_cs4231 *chip)
 138 {
 139         int timeout;
 140
 141         for (timeout = 250;
 142              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 143              timeout--)
 144                 udelay(100);
 145 }
 146
 147 static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
 148                             unsigned char mask, unsigned char value)
 149 {
 150         unsigned char tmp = (chip->image[reg] & mask) | value;
 151
 152         snd_cs4231_wait(chip);
 153 #ifdef CONFIG_SND_DEBUG
 154         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 155                 snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 156 #endif
 157         chip->image[reg] = tmp;
 158         if (!chip->calibrate_mute) {
 159                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 160                 wmb();
 161                 cs4231_outb(chip, CS4231P(REG), tmp);
 162                 mb();
 163         }
 164 }
 165
 166 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
 167 {
 168         int timeout;
 169
 170         for (timeout = 250;
 171              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 172              timeout--)
 173                 udelay(10);
 174         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 175         cs4231_outb(chip, CS4231P(REG), value);
 176         mb();
 177 }
 178
 179 void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
 180 {
 181         snd_cs4231_wait(chip);
 182 #ifdef CONFIG_SND_DEBUG
 183         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 184                 snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 185 #endif
 186         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 187         cs4231_outb(chip, CS4231P(REG), value);
 188         chip->image[reg] = value;
 189         mb();
 190         snd_printdd("codec out - reg 0x%x = 0x%x\n",
 191                         chip->mce_bit | reg, value);
 192 }
 193
 194 unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 195 {
 196         snd_cs4231_wait(chip);
 197 #ifdef CONFIG_SND_DEBUG
 198         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 199                 snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
 200 #endif
 201         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 202         mb();
 203         return cs4231_inb(chip, CS4231P(REG));
 204 }
 205
 206 void snd_cs4236_ext_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char val)
 207 {
 208         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
 209         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
 210         cs4231_outb(chip, CS4231P(REG), val);
 211         chip->eimage[CS4236_REG(reg)] = val;
 212 #if 0
 213         printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
 214 #endif
 215 }
 216
 217 unsigned char snd_cs4236_ext_in(struct snd_cs4231 *chip, unsigned char reg)
 218 {
 219         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
 220         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
 221 #if 1
 222         return cs4231_inb(chip, CS4231P(REG));
 223 #else
 224         {
 225                 unsigned char res;
 226                 res = cs4231_inb(chip, CS4231P(REG));
 227                 printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
 228                 return res;
 229         }
 230 #endif
 231 }
 232
 233 #if 0
 234
 235 static void snd_cs4231_debug(struct snd_cs4231 *chip)
 236 {
 237         printk("CS4231 REGS:      INDEX = 0x%02x  ", cs4231_inb(chip, CS4231P(REGSEL)));
 238         printk("                 STATUS = 0x%02x\n", cs4231_inb(chip, CS4231P(STATUS)));
 239         printk("  0x00: left input      = 0x%02x  ", snd_cs4231_in(chip, 0x00));
 240         printk("  0x10: alt 1 (CFIG 2)  = 0x%02x\n", snd_cs4231_in(chip, 0x10));
 241         printk("  0x01: right input     = 0x%02x  ", snd_cs4231_in(chip, 0x01));
 242         printk("  0x11: alt 2 (CFIG 3)  = 0x%02x\n", snd_cs4231_in(chip, 0x11));
 243         printk("  0x02: GF1 left input  = 0x%02x  ", snd_cs4231_in(chip, 0x02));
 244         printk("  0x12: left line in    = 0x%02x\n", snd_cs4231_in(chip, 0x12));
 245         printk("  0x03: GF1 right input = 0x%02x  ", snd_cs4231_in(chip, 0x03));
 246         printk("  0x13: right line in   = 0x%02x\n", snd_cs4231_in(chip, 0x13));
 247         printk("  0x04: CD left input   = 0x%02x  ", snd_cs4231_in(chip, 0x04));
 248         printk("  0x14: timer low       = 0x%02x\n", snd_cs4231_in(chip, 0x14));
 249         printk("  0x05: CD right input  = 0x%02x  ", snd_cs4231_in(chip, 0x05));
 250         printk("  0x15: timer high      = 0x%02x\n", snd_cs4231_in(chip, 0x15));
 251         printk("  0x06: left output     = 0x%02x  ", snd_cs4231_in(chip, 0x06));
 252         printk("  0x16: left MIC (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x16));
 253         printk("  0x07: right output    = 0x%02x  ", snd_cs4231_in(chip, 0x07));
 254         printk("  0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
 255         printk("  0x08: playback format = 0x%02x  ", snd_cs4231_in(chip, 0x08));
 256         printk("  0x18: IRQ status      = 0x%02x\n", snd_cs4231_in(chip, 0x18));
 257         printk("  0x09: iface (CFIG 1)  = 0x%02x  ", snd_cs4231_in(chip, 0x09));
 258         printk("  0x19: left line out   = 0x%02x\n", snd_cs4231_in(chip, 0x19));
 259         printk("  0x0a: pin control     = 0x%02x  ", snd_cs4231_in(chip, 0x0a));
 260         printk("  0x1a: mono control    = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
 261         printk("  0x0b: init & status   = 0x%02x  ", snd_cs4231_in(chip, 0x0b));
 262         printk("  0x1b: right line out  = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
 263         printk("  0x0c: revision & mode = 0x%02x  ", snd_cs4231_in(chip, 0x0c));
 264         printk("  0x1c: record format   = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
 265         printk("  0x0d: loopback        = 0x%02x  ", snd_cs4231_in(chip, 0x0d));
 266         printk("  0x1d: var freq (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
 267         printk("  0x0e: ply upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0e));
 268         printk("  0x1e: ply lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
 269         printk("  0x0f: rec upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0f));
 270         printk("  0x1f: rec lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
 271 }
 272
 273 #endif
 274
 275 /*
 276  *  CS4231 detection / MCE routines
 277  */
 278
 279 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 280 {
 281         int timeout;
 282
 283         /* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
 284         for (timeout = 5; timeout > 0; timeout--)
 285                 cs4231_inb(chip, CS4231P(REGSEL));
 286         /* end of cleanup sequence */
 287         for (timeout = 250;
 288              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 289              timeout--)
 290                 udelay(10);
 291 }
 292
 293 void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 294 {
 295         unsigned long flags;
 296         int timeout;
 297
 298         snd_cs4231_wait(chip);
 299 #ifdef CONFIG_SND_DEBUG
 300         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 301                 snd_printk("mce_up - auto calibration time out (0)\n");
 302 #endif
 303         spin_lock_irqsave(&chip->reg_lock, flags);
 304         chip->mce_bit |= CS4231_MCE;
 305         timeout = cs4231_inb(chip, CS4231P(REGSEL));
 306         if (timeout == 0x80)
 307                 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 308         if (!(timeout & CS4231_MCE))
 309                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
 310         spin_unlock_irqrestore(&chip->reg_lock, flags);
 311 }
 312
 313 void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 314 {
 315         unsigned long flags;
 316         unsigned long end_time;
 317         int timeout;
 318
 319         snd_cs4231_busy_wait(chip);
 320
 321 #ifdef CONFIG_SND_DEBUG
 322         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 323                 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
 324 #endif
 325         spin_lock_irqsave(&chip->reg_lock, flags);
 326         chip->mce_bit &= ~CS4231_MCE;
 327         timeout = cs4231_inb(chip, CS4231P(REGSEL));
 328         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
 329         spin_unlock_irqrestore(&chip->reg_lock, flags);
 330         if (timeout == 0x80)
 331                 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 332         if ((timeout & CS4231_MCE) == 0 ||
 333             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
 334                 return;
 335         }
 336         snd_cs4231_busy_wait(chip);
 337
 338         /*
 339          * Wait for (possible -- during init auto-calibration may not be set)
 340          * calibration process to start. Needs upto 5 sample periods on AD1848
 341          * which at the slowest possible rate of 5.5125 kHz means 907 us.
 342          */
 343         msleep(1);
 344
 345         snd_printdd("(1) jiffies = %lu\n", jiffies);
 346
 347         /* check condition up to 250 ms */
 348         end_time = jiffies + msecs_to_jiffies(250);
 349         while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
 350                 CS4231_CALIB_IN_PROGRESS) {
 351
 352                 if (time_after(jiffies, end_time)) {
 353                         snd_printk(KERN_ERR "mce_down - "
 354                                         "auto calibration time out (2)\n");
 355                         return;
 356                 }
 357                 msleep(1);
 358         }
 359
 360         snd_printdd("(2) jiffies = %lu\n", jiffies);
 361
 362         /* check condition up to 100 ms */
 363         end_time = jiffies + msecs_to_jiffies(100);
 364         while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
 365                 if (time_after(jiffies, end_time)) {
 366                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
 367                         return;
 368                 }
 369                 msleep(1);
 370         }
 371
 372         snd_printdd("(3) jiffies = %lu\n", jiffies);
 373         snd_printd("mce_down - exit = 0x%x\n", cs4231_inb(chip, CS4231P(REGSEL)));
 374 }
 375
 376 static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
 377 {
 378         switch (format & 0xe0) {
 379         case CS4231_LINEAR_16:
 380         case CS4231_LINEAR_16_BIG:
 381                 size >>= 1;
 382                 break;
 383         case CS4231_ADPCM_16:
 384                 return size >> 2;
 385         }
 386         if (format & CS4231_STEREO)
 387                 size >>= 1;
 388         return size;
 389 }
 390
 391 static int snd_cs4231_trigger(struct snd_pcm_substream *substream,
 392                               int cmd)
 393 {
 394         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 395         int result = 0;
 396         unsigned int what;
 397         struct snd_pcm_substream *s;
 398         int do_start;
 399
 400 #if 0
 401         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, cs4231_inb(chip, CS4231P(STATUS)));
 402 #endif
 403
 404         switch (cmd) {
 405         case SNDRV_PCM_TRIGGER_START:
 406         case SNDRV_PCM_TRIGGER_RESUME:
 407                 do_start = 1; break;
 408         case SNDRV_PCM_TRIGGER_STOP:
 409         case SNDRV_PCM_TRIGGER_SUSPEND:
 410                 do_start = 0; break;
 411         default:
 412                 return -EINVAL;
 413         }
 414
 415         what = 0;
 416         snd_pcm_group_for_each_entry(s, substream) {
 417                 if (s == chip->playback_substream) {
 418                         what |= CS4231_PLAYBACK_ENABLE;
 419                         snd_pcm_trigger_done(s, substream);
 420                 } else if (s == chip->capture_substream) {
 421                         what |= CS4231_RECORD_ENABLE;
 422                         snd_pcm_trigger_done(s, substream);
 423                 }
 424         }
 425         spin_lock(&chip->reg_lock);
 426         if (do_start) {
 427                 chip->image[CS4231_IFACE_CTRL] |= what;
 428                 if (chip->trigger)
 429                         chip->trigger(chip, what, 1);
 430         } else {
 431                 chip->image[CS4231_IFACE_CTRL] &= ~what;
 432                 if (chip->trigger)
 433                         chip->trigger(chip, what, 0);
 434         }
 435         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 436         spin_unlock(&chip->reg_lock);
 437 #if 0
 438         snd_cs4231_debug(chip);
 439 #endif
 440         return result;
 441 }
 442
 443 /*
 444  *  CODEC I/O
 445  */
 446
 447 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 448 {
 449         int i;
 450
 451         for (i = 0; i < ARRAY_SIZE(rates); i++)
 452                 if (rate == rates[i])
 453                         return freq_bits[i];
 454         // snd_BUG();
 455         return freq_bits[ARRAY_SIZE(rates) - 1];
 456 }
 457
 458 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip,
 459                                            int format,
 460                                            int channels)
 461 {
 462         unsigned char rformat;
 463
 464         rformat = CS4231_LINEAR_8;
 465         switch (format) {
 466         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
 467         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
 468         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
 469         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
 470         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
 471         }
 472         if (channels > 1)
 473                 rformat |= CS4231_STEREO;
 474 #if 0
 475         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 476 #endif
 477         return rformat;
 478 }
 479
 480 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 481 {
 482         unsigned long flags;
 483
 484         mute = mute ? 1 : 0;
 485         spin_lock_irqsave(&chip->reg_lock, flags);
 486         if (chip->calibrate_mute == mute) {
 487                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 488                 return;
 489         }
 490         if (!mute) {
 491                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT, chip->image[CS4231_LEFT_INPUT]);
 492                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT, chip->image[CS4231_RIGHT_INPUT]);
 493                 snd_cs4231_dout(chip, CS4231_LOOPBACK, chip->image[CS4231_LOOPBACK]);
 494         }
 495         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 496         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 497         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 498         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 499         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 500         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 501         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN, mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 502         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN, mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 503         snd_cs4231_dout(chip, CS4231_MONO_CTRL, mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 504         if (chip->hardware == CS4231_HW_INTERWAVE) {
 505                 snd_cs4231_dout(chip, CS4231_LEFT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_LEFT_MIC_INPUT]);
 506                 snd_cs4231_dout(chip, CS4231_RIGHT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_MIC_INPUT]);
 507                 snd_cs4231_dout(chip, CS4231_LINE_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_LEFT_OUTPUT]);
 508                 snd_cs4231_dout(chip, CS4231_LINE_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_RIGHT_OUTPUT]);
 509         }
 510         chip->calibrate_mute = mute;
 511         spin_unlock_irqrestore(&chip->reg_lock, flags);
 512 }
 513
 514 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 515                                        struct snd_pcm_hw_params *params,
 516                                        unsigned char pdfr)
 517 {
 518         unsigned long flags;
 519         int full_calib = 1;
 520
 521         mutex_lock(&chip->mce_mutex);
 522         snd_cs4231_calibrate_mute(chip, 1);
 523         if (chip->hardware == CS4231_HW_CS4231A ||
 524             (chip->hardware & CS4231_HW_CS4232_MASK)) {
 525                 spin_lock_irqsave(&chip->reg_lock, flags);
 526                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {      /* rate is same? */
 527                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
 528                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
 529                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
 530                         udelay(100); /* Fixes audible clicks at least on GUS MAX */
 531                         full_calib = 0;
 532                 }
 533                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 534         }
 535         if (full_calib) {
 536                 snd_cs4231_mce_up(chip);
 537                 spin_lock_irqsave(&chip->reg_lock, flags);
 538                 if (chip->hardware != CS4231_HW_INTERWAVE && !chip->single_dma) {
 539                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 540                                         (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 541                                         (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 542                                         pdfr);
 543                 } else {
 544                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
 545                 }
 546                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 547                 if (chip->hardware == CS4231_HW_OPL3SA2)
 548                         udelay(100);    /* this seems to help */
 549                 snd_cs4231_mce_down(chip);
 550         }
 551         snd_cs4231_calibrate_mute(chip, 0);
 552         mutex_unlock(&chip->mce_mutex);
 553 }
 554
 555 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 556                                       struct snd_pcm_hw_params *params,
 557                                       unsigned char cdfr)
 558 {
 559         unsigned long flags;
 560         int full_calib = 1;
 561
 562         mutex_lock(&chip->mce_mutex);
 563         snd_cs4231_calibrate_mute(chip, 1);
 564         if (chip->hardware == CS4231_HW_CS4231A ||
 565             (chip->hardware & CS4231_HW_CS4232_MASK)) {
 566                 spin_lock_irqsave(&chip->reg_lock, flags);
 567                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||      /* rate is same? */
 568                     (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 569                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
 570                         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT] = cdfr);
 571                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
 572                         full_calib = 0;
 573                 }
 574                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 575         }
 576         if (full_calib) {
 577                 snd_cs4231_mce_up(chip);
 578                 spin_lock_irqsave(&chip->reg_lock, flags);
 579                 if (chip->hardware != CS4231_HW_INTERWAVE) {
 580                         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 581                                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 582                                                ((chip->single_dma ? cdfr : chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 583                                                (cdfr & 0x0f));
 584                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 585                                 snd_cs4231_mce_down(chip);
 586                                 snd_cs4231_mce_up(chip);
 587                                 spin_lock_irqsave(&chip->reg_lock, flags);
 588                         }
 589                 }
 590                 snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 591                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 592                 snd_cs4231_mce_down(chip);
 593         }
 594         snd_cs4231_calibrate_mute(chip, 0);
 595         mutex_unlock(&chip->mce_mutex);
 596 }
 597
 598 /*
 599  *  Timer interface
 600  */
 601
 602 static unsigned long snd_cs4231_timer_resolution(struct snd_timer * timer)
 603 {
 604         struct snd_cs4231 *chip = snd_timer_chip(timer);
 605         if (chip->hardware & CS4231_HW_CS4236B_MASK)
 606                 return 14467;
 607         else
 608                 return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 609 }
 610
 611 static int snd_cs4231_timer_start(struct snd_timer * timer)
 612 {
 613         unsigned long flags;
 614         unsigned int ticks;
 615         struct snd_cs4231 *chip = snd_timer_chip(timer);
 616         spin_lock_irqsave(&chip->reg_lock, flags);
 617         ticks = timer->sticks;
 618         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 619             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 620             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 621                 snd_cs4231_out(chip, CS4231_TIMER_HIGH, chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8));
 622                 snd_cs4231_out(chip, CS4231_TIMER_LOW, chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks);
 623                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
 624         }
 625         spin_unlock_irqrestore(&chip->reg_lock, flags);
 626         return 0;
 627 }
 628
 629 static int snd_cs4231_timer_stop(struct snd_timer * timer)
 630 {
 631         unsigned long flags;
 632         struct snd_cs4231 *chip = snd_timer_chip(timer);
 633         spin_lock_irqsave(&chip->reg_lock, flags);
 634         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
 635         spin_unlock_irqrestore(&chip->reg_lock, flags);
 636         return 0;
 637 }
 638
 639 static void snd_cs4231_init(struct snd_cs4231 *chip)
 640 {
 641         unsigned long flags;
 642
 643         snd_cs4231_mce_down(chip);
 644
 645 #ifdef SNDRV_DEBUG_MCE
 646         snd_printk("init: (1)\n");
 647 #endif
 648         snd_cs4231_mce_up(chip);
 649         spin_lock_irqsave(&chip->reg_lock, flags);
 650         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 651                              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
 652                              CS4231_CALIB_MODE);
 653         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 654         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 655         spin_unlock_irqrestore(&chip->reg_lock, flags);
 656         snd_cs4231_mce_down(chip);
 657
 658 #ifdef SNDRV_DEBUG_MCE
 659         snd_printk("init: (2)\n");
 660 #endif
 661
 662         snd_cs4231_mce_up(chip);
 663         spin_lock_irqsave(&chip->reg_lock, flags);
 664         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
 665         spin_unlock_irqrestore(&chip->reg_lock, flags);
 666         snd_cs4231_mce_down(chip);
 667
 668 #ifdef SNDRV_DEBUG_MCE
 669         snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
 670 #endif
 671
 672         spin_lock_irqsave(&chip->reg_lock, flags);
 673         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
 674         spin_unlock_irqrestore(&chip->reg_lock, flags);
 675
 676         snd_cs4231_mce_up(chip);
 677         spin_lock_irqsave(&chip->reg_lock, flags);
 678         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
 679         spin_unlock_irqrestore(&chip->reg_lock, flags);
 680         snd_cs4231_mce_down(chip);
 681
 682 #ifdef SNDRV_DEBUG_MCE
 683         snd_printk("init: (4)\n");
 684 #endif
 685
 686         snd_cs4231_mce_up(chip);
 687         spin_lock_irqsave(&chip->reg_lock, flags);
 688         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 689         spin_unlock_irqrestore(&chip->reg_lock, flags);
 690         snd_cs4231_mce_down(chip);
 691
 692 #ifdef SNDRV_DEBUG_MCE
 693         snd_printk("init: (5)\n");
 694 #endif
 695 }
 696
 697 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 698 {
 699         unsigned long flags;
 700
 701         mutex_lock(&chip->open_mutex);
 702         if ((chip->mode & mode) ||
 703             ((chip->mode & CS4231_MODE_OPEN) && chip->single_dma)) {
 704                 mutex_unlock(&chip->open_mutex);
 705                 return -EAGAIN;
 706         }
 707         if (chip->mode & CS4231_MODE_OPEN) {
 708                 chip->mode |= mode;
 709                 mutex_unlock(&chip->open_mutex);
 710                 return 0;
 711         }
 712         /* ok. now enable and ack CODEC IRQ */
 713         spin_lock_irqsave(&chip->reg_lock, flags);
 714         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 715                        CS4231_RECORD_IRQ |
 716                        CS4231_TIMER_IRQ);
 717         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 718         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 719         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 720         chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
 721         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
 722         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 723                        CS4231_RECORD_IRQ |
 724                        CS4231_TIMER_IRQ);
 725         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 726         spin_unlock_irqrestore(&chip->reg_lock, flags);
 727
 728         chip->mode = mode;
 729         mutex_unlock(&chip->open_mutex);
 730         return 0;
 731 }
 732
 733 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 734 {
 735         unsigned long flags;
 736
 737         mutex_lock(&chip->open_mutex);
 738         chip->mode &= ~mode;
 739         if (chip->mode & CS4231_MODE_OPEN) {
 740                 mutex_unlock(&chip->open_mutex);
 741                 return;
 742         }
 743         snd_cs4231_calibrate_mute(chip, 1);
 744
 745         /* disable IRQ */
 746         spin_lock_irqsave(&chip->reg_lock, flags);
 747         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 748         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 749         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 750         chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
 751         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
 752
 753         /* now disable record & playback */
 754
 755         if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 756                                                CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 757                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 758                 snd_cs4231_mce_up(chip);
 759                 spin_lock_irqsave(&chip->reg_lock, flags);
 760                 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 761                                                      CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 762                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 763                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 764                 snd_cs4231_mce_down(chip);
 765                 spin_lock_irqsave(&chip->reg_lock, flags);
 766         }
 767
 768         /* clear IRQ again */
 769         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 770         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 771         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 772         spin_unlock_irqrestore(&chip->reg_lock, flags);
 773
 774         snd_cs4231_calibrate_mute(chip, 0);
 775
 776         chip->mode = 0;
 777         mutex_unlock(&chip->open_mutex);
 778 }
 779
 780 /*
 781  *  timer open/close
 782  */
 783
 784 static int snd_cs4231_timer_open(struct snd_timer * timer)
 785 {
 786         struct snd_cs4231 *chip = snd_timer_chip(timer);
 787         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 788         return 0;
 789 }
 790
 791 static int snd_cs4231_timer_close(struct snd_timer * timer)
 792 {
 793         struct snd_cs4231 *chip = snd_timer_chip(timer);
 794         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 795         return 0;
 796 }
 797
 798 static struct snd_timer_hardware snd_cs4231_timer_table =
 799 {
 800         .flags =        SNDRV_TIMER_HW_AUTO,
 801         .resolution =   9945,
 802         .ticks =        65535,
 803         .open =         snd_cs4231_timer_open,
 804         .close =        snd_cs4231_timer_close,
 805         .c_resolution = snd_cs4231_timer_resolution,
 806         .start =        snd_cs4231_timer_start,
 807         .stop =         snd_cs4231_timer_stop,
 808 };
 809
 810 /*
 811  *  ok.. exported functions..
 812  */
 813
 814 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 815                                          struct snd_pcm_hw_params *hw_params)
 816 {
 817         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 818         unsigned char new_pdfr;
 819         int err;
 820
 821         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 822                 return err;
 823         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
 824                    snd_cs4231_get_rate(params_rate(hw_params));
 825         chip->set_playback_format(chip, hw_params, new_pdfr);
 826         return 0;
 827 }
 828
 829 static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
 830 {
 831         return snd_pcm_lib_free_pages(substream);
 832 }
 833
 834 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 835 {
 836         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 837         struct snd_pcm_runtime *runtime = substream->runtime;
 838         unsigned long flags;
 839         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 840         unsigned int count = snd_pcm_lib_period_bytes(substream);
 841
 842         spin_lock_irqsave(&chip->reg_lock, flags);
 843         chip->p_dma_size = size;
 844         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
 845         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 846         count = snd_cs4231_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
 847         snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
 848         snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
 849         spin_unlock_irqrestore(&chip->reg_lock, flags);
 850 #if 0
 851         snd_cs4231_debug(chip);
 852 #endif
 853         return 0;
 854 }
 855
 856 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 857                                         struct snd_pcm_hw_params *hw_params)
 858 {
 859         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 860         unsigned char new_cdfr;
 861         int err;
 862
 863         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 864                 return err;
 865         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
 866                    snd_cs4231_get_rate(params_rate(hw_params));
 867         chip->set_capture_format(chip, hw_params, new_cdfr);
 868         return 0;
 869 }
 870
 871 static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
 872 {
 873         return snd_pcm_lib_free_pages(substream);
 874 }
 875
 876 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 877 {
 878         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 879         struct snd_pcm_runtime *runtime = substream->runtime;
 880         unsigned long flags;
 881         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 882         unsigned int count = snd_pcm_lib_period_bytes(substream);
 883
 884         spin_lock_irqsave(&chip->reg_lock, flags);
 885         chip->c_dma_size = size;
 886         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 887         snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 888         count = snd_cs4231_get_count(chip->image[CS4231_REC_FORMAT], count) - 1;
 889         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
 890                 snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
 891                 snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
 892         } else {
 893                 snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
 894                 snd_cs4231_out(chip, CS4231_REC_UPR_CNT, (unsigned char) (count >> 8));
 895         }
 896         spin_unlock_irqrestore(&chip->reg_lock, flags);
 897         return 0;
 898 }
 899
 900 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 901 {
 902         unsigned long flags;
 903         unsigned char res;
 904
 905         spin_lock_irqsave(&chip->reg_lock, flags);
 906         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 907         spin_unlock_irqrestore(&chip->reg_lock, flags);
 908         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
 909                 chip->capture_substream->runtime->overrange++;
 910 }
 911
 912 irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id)
 913 {
 914         struct snd_cs4231 *chip = dev_id;
 915         unsigned char status;
 916
 917         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
 918         if (status & CS4231_TIMER_IRQ) {
 919                 if (chip->timer)
 920                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
 921         }
 922         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
 923                 if (status & CS4231_PLAYBACK_IRQ) {
 924                         if (chip->mode & CS4231_MODE_PLAY) {
 925                                 if (chip->playback_substream)
 926                                         snd_pcm_period_elapsed(chip->playback_substream);
 927                         }
 928                         if (chip->mode & CS4231_MODE_RECORD) {
 929                                 if (chip->capture_substream) {
 930                                         snd_cs4231_overrange(chip);
 931                                         snd_pcm_period_elapsed(chip->capture_substream);
 932                                 }
 933                         }
 934                 }
 935         } else {
 936                 if (status & CS4231_PLAYBACK_IRQ) {
 937                         if (chip->playback_substream)
 938                                 snd_pcm_period_elapsed(chip->playback_substream);
 939                 }
 940                 if (status & CS4231_RECORD_IRQ) {
 941                         if (chip->capture_substream) {
 942                                 snd_cs4231_overrange(chip);
 943                                 snd_pcm_period_elapsed(chip->capture_substream);
 944                         }
 945                 }
 946         }
 947
 948         spin_lock(&chip->reg_lock);
 949         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
 950         spin_unlock(&chip->reg_lock);
 951         return IRQ_HANDLED;
 952 }
 953
 954 static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
 955 {
 956         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 957         size_t ptr;
 958
 959         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 960                 return 0;
 961         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
 962         return bytes_to_frames(substream->runtime, ptr);
 963 }
 964
 965 static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
 966 {
 967         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 968         size_t ptr;
 969
 970         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
 971                 return 0;
 972         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
 973         return bytes_to_frames(substream->runtime, ptr);
 974 }
 975
 976 /*
 977
 978  */
 979
 980 static int snd_cs4231_probe(struct snd_cs4231 *chip)
 981 {
 982         unsigned long flags;
 983         int i, id, rev;
 984         unsigned char *ptr;
 985         unsigned int hw;
 986
 987 #if 0
 988         snd_cs4231_debug(chip);
 989 #endif
 990         id = 0;
 991         for (i = 0; i < 50; i++) {
 992                 mb();
 993                 if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 994                         udelay(2000);
 995                 else {
 996                         spin_lock_irqsave(&chip->reg_lock, flags);
 997                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
 998                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
 999                         spin_unlock_irqrestore(&chip->reg_lock, flags);
1000                         if (id == 0x0a)
1001                                 break;  /* this is valid value */
1002                 }
1003         }
1004         snd_printdd("cs4231: port = 0x%lx, id = 0x%x\n", chip->port, id);
1005         if (id != 0x0a)
1006                 return -ENODEV; /* no valid device found */
1007
1008         if (((hw = chip->hardware) & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1009                 rev = snd_cs4231_in(chip, CS4231_VERSION) & 0xe7;
1010                 snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
1011                 if (rev == 0x80) {
1012                         unsigned char tmp = snd_cs4231_in(chip, 23);
1013                         snd_cs4231_out(chip, 23, ~tmp);
1014                         if (snd_cs4231_in(chip, 23) != tmp)
1015                                 chip->hardware = CS4231_HW_AD1845;
1016                         else
1017                                 chip->hardware = CS4231_HW_CS4231;
1018                 } else if (rev == 0xa0) {
1019                         chip->hardware = CS4231_HW_CS4231A;
1020                 } else if (rev == 0xa2) {
1021                         chip->hardware = CS4231_HW_CS4232;
1022                 } else if (rev == 0xb2) {
1023                         chip->hardware = CS4231_HW_CS4232A;
1024                 } else if (rev == 0x83) {
1025                         chip->hardware = CS4231_HW_CS4236;
1026                 } else if (rev == 0x03) {
1027                         chip->hardware = CS4231_HW_CS4236B;
1028                 } else {
1029                         snd_printk("unknown CS chip with version 0x%x\n", rev);
1030                         return -ENODEV;         /* unknown CS4231 chip? */
1031                 }
1032         }
1033         spin_lock_irqsave(&chip->reg_lock, flags);
1034         cs4231_inb(chip, CS4231P(STATUS));      /* clear any pendings IRQ */
1035         cs4231_outb(chip, CS4231P(STATUS), 0);
1036         mb();
1037         spin_unlock_irqrestore(&chip->reg_lock, flags);
1038
1039         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1040         switch (chip->hardware) {
1041         case CS4231_HW_INTERWAVE:
1042                 chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
1043                 break;
1044         case CS4231_HW_CS4235:
1045         case CS4231_HW_CS4236B:
1046         case CS4231_HW_CS4237B:
1047         case CS4231_HW_CS4238B:
1048         case CS4231_HW_CS4239:
1049                 if (hw == CS4231_HW_DETECT3)
1050                         chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
1051                 else
1052                         chip->hardware = CS4231_HW_CS4236;
1053                 break;
1054         }
1055
1056         chip->image[CS4231_IFACE_CTRL] =
1057             (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
1058             (chip->single_dma ? CS4231_SINGLE_DMA : 0);
1059         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1060         chip->image[CS4231_ALT_FEATURE_2] = chip->hardware == CS4231_HW_INTERWAVE ? 0xc2 : 0x01;
1061         ptr = (unsigned char *) &chip->image;
1062         snd_cs4231_mce_down(chip);
1063         spin_lock_irqsave(&chip->reg_lock, flags);
1064         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1065                 snd_cs4231_out(chip, i, *ptr++);
1066         spin_unlock_irqrestore(&chip->reg_lock, flags);
1067         snd_cs4231_mce_up(chip);
1068         snd_cs4231_mce_down(chip);
1069
1070         mdelay(2);
1071
1072         /* ok.. try check hardware version for CS4236+ chips */
1073         if ((hw & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1074                 if (chip->hardware == CS4231_HW_CS4236B) {
1075                         rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
1076                         snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
1077                         id = snd_cs4236_ext_in(chip, CS4236_VERSION);
1078                         snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
1079                         snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
1080                         if ((id & 0x1f) == 0x1d) {      /* CS4235 */
1081                                 chip->hardware = CS4231_HW_CS4235;
1082                                 switch (id >> 5) {
1083                                 case 4:
1084                                 case 5:
1085                                 case 6:
1086                                         break;
1087                                 default:
1088                                         snd_printk("unknown CS4235 chip (enhanced version = 0x%x)\n", id);
1089                                 }
1090                         } else if ((id & 0x1f) == 0x0b) {       /* CS4236/B */
1091                                 switch (id >> 5) {
1092                                 case 4:
1093                                 case 5:
1094                                 case 6:
1095                                 case 7:
1096                                         chip->hardware = CS4231_HW_CS4236B;
1097                                         break;
1098                                 default:
1099                                         snd_printk("unknown CS4236 chip (enhanced version = 0x%x)\n", id);
1100                                 }
1101                         } else if ((id & 0x1f) == 0x08) {       /* CS4237B */
1102                                 chip->hardware = CS4231_HW_CS4237B;
1103                                 switch (id >> 5) {
1104                                 case 4:
1105                                 case 5:
1106                                 case 6:
1107                                 case 7:
1108                                         break;
1109                                 default:
1110                                         snd_printk("unknown CS4237B chip (enhanced version = 0x%x)\n", id);
1111                                 }
1112                         } else if ((id & 0x1f) == 0x09) {       /* CS4238B */
1113                                 chip->hardware = CS4231_HW_CS4238B;
1114                                 switch (id >> 5) {
1115                                 case 5:
1116                                 case 6:
1117                                 case 7:
1118                                         break;
1119                                 default:
1120                                         snd_printk("unknown CS4238B chip (enhanced version = 0x%x)\n", id);
1121                                 }
1122                         } else if ((id & 0x1f) == 0x1e) {       /* CS4239 */
1123                                 chip->hardware = CS4231_HW_CS4239;
1124                                 switch (id >> 5) {
1125                                 case 4:
1126                                 case 5:
1127                                 case 6:
1128                                         break;
1129                                 default:
1130                                         snd_printk("unknown CS4239 chip (enhanced version = 0x%x)\n", id);
1131                                 }
1132                         } else {
1133                                 snd_printk("unknown CS4236/CS423xB chip (enhanced version = 0x%x)\n", id);
1134                         }
1135                 }
1136         }
1137         return 0;               /* all things are ok.. */
1138 }
1139
1140 /*
1141
1142  */
1143
1144 static struct snd_pcm_hardware snd_cs4231_playback =
1145 {
1146         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1147                                  SNDRV_PCM_INFO_MMAP_VALID |
1148                                  SNDRV_PCM_INFO_RESUME |
1149                                  SNDRV_PCM_INFO_SYNC_START),
1150         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1151                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1152         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1153         .rate_min =             5510,
1154         .rate_max =             48000,
1155         .channels_min =         1,
1156         .channels_max =         2,
1157         .buffer_bytes_max =     (128*1024),
1158         .period_bytes_min =     64,
1159         .period_bytes_max =     (128*1024),
1160         .periods_min =          1,
1161         .periods_max =          1024,
1162         .fifo_size =            0,
1163 };
1164
1165 static struct snd_pcm_hardware snd_cs4231_capture =
1166 {
1167         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1168                                  SNDRV_PCM_INFO_MMAP_VALID |
1169                                  SNDRV_PCM_INFO_RESUME |
1170                                  SNDRV_PCM_INFO_SYNC_START),
1171         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1172                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1173         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1174         .rate_min =             5510,
1175         .rate_max =             48000,
1176         .channels_min =         1,
1177         .channels_max =         2,
1178         .buffer_bytes_max =     (128*1024),
1179         .period_bytes_min =     64,
1180         .period_bytes_max =     (128*1024),
1181         .periods_min =          1,
1182         .periods_max =          1024,
1183         .fifo_size =            0,
1184 };
1185
1186 /*
1187
1188  */
1189
1190 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1191 {
1192         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1193         struct snd_pcm_runtime *runtime = substream->runtime;
1194         int err;
1195
1196         runtime->hw = snd_cs4231_playback;
1197
1198         /* hardware bug in InterWave chipset */
1199         if (chip->hardware == CS4231_HW_INTERWAVE && chip->dma1 > 3)
1200                 runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
1201
1202         /* hardware limitation of cheap chips */
1203         if (chip->hardware == CS4231_HW_CS4235 ||
1204             chip->hardware == CS4231_HW_CS4239)
1205                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1206
1207         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
1208         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
1209
1210         if (chip->claim_dma) {
1211                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
1212                         return err;
1213         }
1214
1215         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1216                 if (chip->release_dma)
1217                         chip->release_dma(chip, chip->dma_private_data, chip->dma1);
1218                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1219                 return err;
1220         }
1221         chip->playback_substream = substream;
1222         snd_pcm_set_sync(substream);
1223         chip->rate_constraint(runtime);
1224         return 0;
1225 }
1226
1227 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1228 {
1229         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1230         struct snd_pcm_runtime *runtime = substream->runtime;
1231         int err;
1232
1233         runtime->hw = snd_cs4231_capture;
1234
1235         /* hardware limitation of cheap chips */
1236         if (chip->hardware == CS4231_HW_CS4235 ||
1237             chip->hardware == CS4231_HW_CS4239)
1238                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1239
1240         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
1241         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
1242
1243         if (chip->claim_dma) {
1244                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
1245                         return err;
1246         }
1247
1248         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1249                 if (chip->release_dma)
1250                         chip->release_dma(chip, chip->dma_private_data, chip->dma2);
1251                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1252                 return err;
1253         }
1254         chip->capture_substream = substream;
1255         snd_pcm_set_sync(substream);
1256         chip->rate_constraint(runtime);
1257         return 0;
1258 }
1259
1260 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1261 {
1262         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1263
1264         chip->playback_substream = NULL;
1265         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1266         return 0;
1267 }
1268
1269 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1270 {
1271         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1272
1273         chip->capture_substream = NULL;
1274         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1275         return 0;
1276 }
1277
1278 #ifdef CONFIG_PM
1279
1280 /* lowlevel suspend callback for CS4231 */
1281 static void snd_cs4231_suspend(struct snd_cs4231 *chip)
1282 {
1283         int reg;
1284         unsigned long flags;
1285
1286         snd_pcm_suspend_all(chip->pcm);
1287         spin_lock_irqsave(&chip->reg_lock, flags);
1288         for (reg = 0; reg < 32; reg++)
1289                 chip->image[reg] = snd_cs4231_in(chip, reg);
1290         spin_unlock_irqrestore(&chip->reg_lock, flags);
1291 }
1292
1293 /* lowlevel resume callback for CS4231 */
1294 static void snd_cs4231_resume(struct snd_cs4231 *chip)
1295 {
1296         int reg;
1297         unsigned long flags;
1298         /* int timeout; */
1299
1300         snd_cs4231_mce_up(chip);
1301         spin_lock_irqsave(&chip->reg_lock, flags);
1302         for (reg = 0; reg < 32; reg++) {
1303                 switch (reg) {
1304                 case CS4231_VERSION:
1305                         break;
1306                 default:
1307                         snd_cs4231_out(chip, reg, chip->image[reg]);
1308                         break;
1309                 }
1310         }
1311         spin_unlock_irqrestore(&chip->reg_lock, flags);
1312 #if 1
1313         snd_cs4231_mce_down(chip);
1314 #else
1315         /* The following is a workaround to avoid freeze after resume on TP600E.
1316            This is the first half of copy of snd_cs4231_mce_down(), but doesn't
1317            include rescheduling.  -- iwai
1318            */
1319         snd_cs4231_busy_wait(chip);
1320         spin_lock_irqsave(&chip->reg_lock, flags);
1321         chip->mce_bit &= ~CS4231_MCE;
1322         timeout = cs4231_inb(chip, CS4231P(REGSEL));
1323         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
1324         spin_unlock_irqrestore(&chip->reg_lock, flags);
1325         if (timeout == 0x80)
1326                 snd_printk("down [0x%lx]: serious init problem - codec still busy\n", chip->port);
1327         if ((timeout & CS4231_MCE) == 0 ||
1328             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
1329                 return;
1330         }
1331         snd_cs4231_busy_wait(chip);
1332 #endif
1333 }
1334 #endif /* CONFIG_PM */
1335
1336 static int snd_cs4231_free(struct snd_cs4231 *chip)
1337 {
1338         release_and_free_resource(chip->res_port);
1339         release_and_free_resource(chip->res_cport);
1340         if (chip->irq >= 0) {
1341                 disable_irq(chip->irq);
1342                 if (!(chip->hwshare & CS4231_HWSHARE_IRQ))
1343                         free_irq(chip->irq, (void *) chip);
1344         }
1345         if (!(chip->hwshare & CS4231_HWSHARE_DMA1) && chip->dma1 >= 0) {
1346                 snd_dma_disable(chip->dma1);
1347                 free_dma(chip->dma1);
1348         }
1349         if (!(chip->hwshare & CS4231_HWSHARE_DMA2) && chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
1350                 snd_dma_disable(chip->dma2);
1351                 free_dma(chip->dma2);
1352         }
1353         if (chip->timer)
1354                 snd_device_free(chip->card, chip->timer);
1355         kfree(chip);
1356         return 0;
1357 }
1358
1359 static int snd_cs4231_dev_free(struct snd_device *device)
1360 {
1361         struct snd_cs4231 *chip = device->device_data;
1362         return snd_cs4231_free(chip);
1363 }
1364
1365 const char *snd_cs4231_chip_id(struct snd_cs4231 *chip)
1366 {
1367         switch (chip->hardware) {
1368         case CS4231_HW_CS4231:  return "CS4231";
1369         case CS4231_HW_CS4231A: return "CS4231A";
1370         case CS4231_HW_CS4232:  return "CS4232";
1371         case CS4231_HW_CS4232A: return "CS4232A";
1372         case CS4231_HW_CS4235:  return "CS4235";
1373         case CS4231_HW_CS4236:  return "CS4236";
1374         case CS4231_HW_CS4236B: return "CS4236B";
1375         case CS4231_HW_CS4237B: return "CS4237B";
1376         case CS4231_HW_CS4238B: return "CS4238B";
1377         case CS4231_HW_CS4239:  return "CS4239";
1378         case CS4231_HW_INTERWAVE: return "AMD InterWave";
1379         case CS4231_HW_OPL3SA2: return chip->card->shortname;
1380         case CS4231_HW_AD1845: return "AD1845";
1381         default: return "???";
1382         }
1383 }
1384
1385 static int snd_cs4231_new(struct snd_card *card,
1386                           unsigned short hardware,
1387                           unsigned short hwshare,
1388                           struct snd_cs4231 ** rchip)
1389 {
1390         struct snd_cs4231 *chip;
1391
1392         *rchip = NULL;
1393         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1394         if (chip == NULL)
1395                 return -ENOMEM;
1396         chip->hardware = hardware;
1397         chip->hwshare = hwshare;
1398
1399         spin_lock_init(&chip->reg_lock);
1400         mutex_init(&chip->mce_mutex);
1401         mutex_init(&chip->open_mutex);
1402         chip->card = card;
1403         chip->rate_constraint = snd_cs4231_xrate;
1404         chip->set_playback_format = snd_cs4231_playback_format;
1405         chip->set_capture_format = snd_cs4231_capture_format;
1406         memcpy(&chip->image, &snd_cs4231_original_image, sizeof(snd_cs4231_original_image));
1407
1408         *rchip = chip;
1409         return 0;
1410 }
1411
1412 int snd_cs4231_create(struct snd_card *card,
1413                       unsigned long port,
1414                       unsigned long cport,
1415                       int irq, int dma1, int dma2,
1416                       unsigned short hardware,
1417                       unsigned short hwshare,
1418                       struct snd_cs4231 ** rchip)
1419 {
1420         static struct snd_device_ops ops = {
1421                 .dev_free =     snd_cs4231_dev_free,
1422         };
1423         struct snd_cs4231 *chip;
1424         int err;
1425
1426         err = snd_cs4231_new(card, hardware, hwshare, &chip);
1427         if (err < 0)
1428                 return err;
1429
1430         chip->irq = -1;
1431         chip->dma1 = -1;
1432         chip->dma2 = -1;
1433
1434         if ((chip->res_port = request_region(port, 4, "CS4231")) == NULL) {
1435                 snd_printk(KERN_ERR "cs4231: can't grab port 0x%lx\n", port);
1436                 snd_cs4231_free(chip);
1437                 return -EBUSY;
1438         }
1439         chip->port = port;
1440         if ((long)cport >= 0 && (chip->res_cport = request_region(cport, 8, "CS4232 Control")) == NULL) {
1441                 snd_printk(KERN_ERR "cs4231: can't grab control port 0x%lx\n", cport);
1442                 snd_cs4231_free(chip);
1443                 return -ENODEV;
1444         }
1445         chip->cport = cport;
1446         if (!(hwshare & CS4231_HWSHARE_IRQ) && request_irq(irq, snd_cs4231_interrupt, IRQF_DISABLED, "CS4231", (void *) chip)) {
1447                 snd_printk(KERN_ERR "cs4231: can't grab IRQ %d\n", irq);
1448                 snd_cs4231_free(chip);
1449                 return -EBUSY;
1450         }
1451         chip->irq = irq;
1452         if (!(hwshare & CS4231_HWSHARE_DMA1) && request_dma(dma1, "CS4231 - 1")) {
1453                 snd_printk(KERN_ERR "cs4231: can't grab DMA1 %d\n", dma1);
1454                 snd_cs4231_free(chip);
1455                 return -EBUSY;
1456         }
1457         chip->dma1 = dma1;
1458         if (!(hwshare & CS4231_HWSHARE_DMA2) && dma1 != dma2 && dma2 >= 0 && request_dma(dma2, "CS4231 - 2")) {
1459                 snd_printk(KERN_ERR "cs4231: can't grab DMA2 %d\n", dma2);
1460                 snd_cs4231_free(chip);
1461                 return -EBUSY;
1462         }
1463         if (dma1 == dma2 || dma2 < 0) {
1464                 chip->single_dma = 1;
1465                 chip->dma2 = chip->dma1;
1466         } else
1467                 chip->dma2 = dma2;
1468
1469         /* global setup */
1470         if (snd_cs4231_probe(chip) < 0) {
1471                 snd_cs4231_free(chip);
1472                 return -ENODEV;
1473         }
1474         snd_cs4231_init(chip);
1475
1476 #if 0
1477         if (chip->hardware & CS4231_HW_CS4232_MASK) {
1478                 if (chip->res_cport == NULL)
1479                         snd_printk("CS4232 control port features are not accessible\n");
1480         }
1481 #endif
1482
1483         /* Register device */
1484         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1485                 snd_cs4231_free(chip);
1486                 return err;
1487         }
1488
1489 #ifdef CONFIG_PM
1490         /* Power Management */
1491         chip->suspend = snd_cs4231_suspend;
1492         chip->resume = snd_cs4231_resume;
1493 #endif
1494
1495         *rchip = chip;
1496         return 0;
1497 }
1498
1499 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1500         .open =         snd_cs4231_playback_open,
1501         .close =        snd_cs4231_playback_close,
1502         .ioctl =        snd_pcm_lib_ioctl,
1503         .hw_params =    snd_cs4231_playback_hw_params,
1504         .hw_free =      snd_cs4231_playback_hw_free,
1505         .prepare =      snd_cs4231_playback_prepare,
1506         .trigger =      snd_cs4231_trigger,
1507         .pointer =      snd_cs4231_playback_pointer,
1508 };
1509
1510 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1511         .open =         snd_cs4231_capture_open,
1512         .close =        snd_cs4231_capture_close,
1513         .ioctl =        snd_pcm_lib_ioctl,
1514         .hw_params =    snd_cs4231_capture_hw_params,
1515         .hw_free =      snd_cs4231_capture_hw_free,
1516         .prepare =      snd_cs4231_capture_prepare,
1517         .trigger =      snd_cs4231_trigger,
1518         .pointer =      snd_cs4231_capture_pointer,
1519 };
1520
1521 int snd_cs4231_pcm(struct snd_cs4231 *chip, int device, struct snd_pcm **rpcm)
1522 {
1523         struct snd_pcm *pcm;
1524         int err;
1525
1526         if ((err = snd_pcm_new(chip->card, "CS4231", device, 1, 1, &pcm)) < 0)
1527                 return err;
1528
1529         spin_lock_init(&chip->reg_lock);
1530         mutex_init(&chip->mce_mutex);
1531         mutex_init(&chip->open_mutex);
1532
1533         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1534         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1535
1536         /* global setup */
1537         pcm->private_data = chip;
1538         pcm->info_flags = 0;
1539         if (chip->single_dma)
1540                 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1541         if (chip->hardware != CS4231_HW_INTERWAVE)
1542                 pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1543         strcpy(pcm->name, snd_cs4231_chip_id(chip));
1544
1545         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1546                                               snd_dma_isa_data(),
1547                                               64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1548
1549         chip->pcm = pcm;
1550         if (rpcm)
1551                 *rpcm = pcm;
1552         return 0;
1553 }
1554
1555 static void snd_cs4231_timer_free(struct snd_timer *timer)
1556 {
1557         struct snd_cs4231 *chip = timer->private_data;
1558         chip->timer = NULL;
1559 }
1560
1561 int snd_cs4231_timer(struct snd_cs4231 *chip, int device, struct snd_timer **rtimer)
1562 {
1563         struct snd_timer *timer;
1564         struct snd_timer_id tid;
1565         int err;
1566
1567         /* Timer initialization */
1568         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1569         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1570         tid.card = chip->card->number;
1571         tid.device = device;
1572         tid.subdevice = 0;
1573         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1574                 return err;
1575         strcpy(timer->name, snd_cs4231_chip_id(chip));
1576         timer->private_data = chip;
1577         timer->private_free = snd_cs4231_timer_free;
1578         timer->hw = snd_cs4231_timer_table;
1579         chip->timer = timer;
1580         if (rtimer)
1581                 *rtimer = timer;
1582         return 0;
1583 }
1584
1585 /*
1586  *  MIXER part
1587  */
1588
1589 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1590 {
1591         static char *texts[4] = {
1592                 "Line", "Aux", "Mic", "Mix"
1593         };
1594         static char *opl3sa_texts[4] = {
1595                 "Line", "CD", "Mic", "Mix"
1596         };
1597         static char *gusmax_texts[4] = {
1598                 "Line", "Synth", "Mic", "Mix"
1599         };
1600         char **ptexts = texts;
1601         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1602
1603         snd_assert(chip->card != NULL, return -EINVAL);
1604         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1605         uinfo->count = 2;
1606         uinfo->value.enumerated.items = 4;
1607         if (uinfo->value.enumerated.item > 3)
1608                 uinfo->value.enumerated.item = 3;
1609         if (!strcmp(chip->card->driver, "GUS MAX"))
1610                 ptexts = gusmax_texts;
1611         switch (chip->hardware) {
1612         case CS4231_HW_INTERWAVE: ptexts = gusmax_texts; break;
1613         case CS4231_HW_OPL3SA2: ptexts = opl3sa_texts; break;
1614         }
1615         strcpy(uinfo->value.enumerated.name, ptexts[uinfo->value.enumerated.item]);
1616         return 0;
1617 }
1618
1619 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1620 {
1621         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1622         unsigned long flags;
1623
1624         spin_lock_irqsave(&chip->reg_lock, flags);
1625         ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1626         ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1627         spin_unlock_irqrestore(&chip->reg_lock, flags);
1628         return 0;
1629 }
1630
1631 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1632 {
1633         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1634         unsigned long flags;
1635         unsigned short left, right;
1636         int change;
1637
1638         if (ucontrol->value.enumerated.item[0] > 3 ||
1639             ucontrol->value.enumerated.item[1] > 3)
1640                 return -EINVAL;
1641         left = ucontrol->value.enumerated.item[0] << 6;
1642         right = ucontrol->value.enumerated.item[1] << 6;
1643         spin_lock_irqsave(&chip->reg_lock, flags);
1644         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1645         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1646         change = left != chip->image[CS4231_LEFT_INPUT] ||
1647                  right != chip->image[CS4231_RIGHT_INPUT];
1648         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1649         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1650         spin_unlock_irqrestore(&chip->reg_lock, flags);
1651         return change;
1652 }
1653
1654 int snd_cs4231_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1655 {
1656         int mask = (kcontrol->private_value >> 16) & 0xff;
1657
1658         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1659         uinfo->count = 1;
1660         uinfo->value.integer.min = 0;
1661         uinfo->value.integer.max = mask;
1662         return 0;
1663 }
1664
1665 int snd_cs4231_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1666 {
1667         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1668         unsigned long flags;
1669         int reg = kcontrol->private_value & 0xff;
1670         int shift = (kcontrol->private_value >> 8) & 0xff;
1671         int mask = (kcontrol->private_value >> 16) & 0xff;
1672         int invert = (kcontrol->private_value >> 24) & 0xff;
1673
1674         spin_lock_irqsave(&chip->reg_lock, flags);
1675         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1676         spin_unlock_irqrestore(&chip->reg_lock, flags);
1677         if (invert)
1678                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1679         return 0;
1680 }
1681
1682 int snd_cs4231_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1683 {
1684         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1685         unsigned long flags;
1686         int reg = kcontrol->private_value & 0xff;
1687         int shift = (kcontrol->private_value >> 8) & 0xff;
1688         int mask = (kcontrol->private_value >> 16) & 0xff;
1689         int invert = (kcontrol->private_value >> 24) & 0xff;
1690         int change;
1691         unsigned short val;
1692
1693         val = (ucontrol->value.integer.value[0] & mask);
1694         if (invert)
1695                 val = mask - val;
1696         val <<= shift;
1697         spin_lock_irqsave(&chip->reg_lock, flags);
1698         val = (chip->image[reg] & ~(mask << shift)) | val;
1699         change = val != chip->image[reg];
1700         snd_cs4231_out(chip, reg, val);
1701         spin_unlock_irqrestore(&chip->reg_lock, flags);
1702         return change;
1703 }
1704
1705 int snd_cs4231_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1706 {
1707         int mask = (kcontrol->private_value >> 24) & 0xff;
1708
1709         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1710         uinfo->count = 2;
1711         uinfo->value.integer.min = 0;
1712         uinfo->value.integer.max = mask;
1713         return 0;
1714 }
1715
1716 int snd_cs4231_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1717 {
1718         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1719         unsigned long flags;
1720         int left_reg = kcontrol->private_value & 0xff;
1721         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1722         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1723         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1724         int mask = (kcontrol->private_value >> 24) & 0xff;
1725         int invert = (kcontrol->private_value >> 22) & 1;
1726
1727         spin_lock_irqsave(&chip->reg_lock, flags);
1728         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1729         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1730         spin_unlock_irqrestore(&chip->reg_lock, flags);
1731         if (invert) {
1732                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1733                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1734         }
1735         return 0;
1736 }
1737
1738 int snd_cs4231_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1739 {
1740         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1741         unsigned long flags;
1742         int left_reg = kcontrol->private_value & 0xff;
1743         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1744         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1745         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1746         int mask = (kcontrol->private_value >> 24) & 0xff;
1747         int invert = (kcontrol->private_value >> 22) & 1;
1748         int change;
1749         unsigned short val1, val2;
1750
1751         val1 = ucontrol->value.integer.value[0] & mask;
1752         val2 = ucontrol->value.integer.value[1] & mask;
1753         if (invert) {
1754                 val1 = mask - val1;
1755                 val2 = mask - val2;
1756         }
1757         val1 <<= shift_left;
1758         val2 <<= shift_right;
1759         spin_lock_irqsave(&chip->reg_lock, flags);
1760         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1761         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1762         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1763         snd_cs4231_out(chip, left_reg, val1);
1764         snd_cs4231_out(chip, right_reg, val2);
1765         spin_unlock_irqrestore(&chip->reg_lock, flags);
1766         return change;
1767 }
1768
1769 static struct snd_kcontrol_new snd_cs4231_controls[] = {
1770 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1771 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1772 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1773 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1774 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1775 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1776 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1777 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1778 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1779 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1780 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1781 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1782 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1783 {
1784         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1785         .name = "Capture Source",
1786         .info = snd_cs4231_info_mux,
1787         .get = snd_cs4231_get_mux,
1788         .put = snd_cs4231_put_mux,
1789 },
1790 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1791 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1792 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1)
1793 };
1794
1795 int snd_cs4231_mixer(struct snd_cs4231 *chip)
1796 {
1797         struct snd_card *card;
1798         unsigned int idx;
1799         int err;
1800
1801         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1802
1803         card = chip->card;
1804
1805         strcpy(card->mixername, chip->pcm->name);
1806
1807         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1808                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4231_controls[idx], chip))) < 0)
1809                         return err;
1810         }
1811         return 0;
1812 }
1813
1814 EXPORT_SYMBOL(snd_cs4231_out);
1815 EXPORT_SYMBOL(snd_cs4231_in);
1816 EXPORT_SYMBOL(snd_cs4236_ext_out);
1817 EXPORT_SYMBOL(snd_cs4236_ext_in);
1818 EXPORT_SYMBOL(snd_cs4231_mce_up);
1819 EXPORT_SYMBOL(snd_cs4231_mce_down);
1820 EXPORT_SYMBOL(snd_cs4231_interrupt);
1821 EXPORT_SYMBOL(snd_cs4231_chip_id);
1822 EXPORT_SYMBOL(snd_cs4231_create);
1823 EXPORT_SYMBOL(snd_cs4231_pcm);
1824 EXPORT_SYMBOL(snd_cs4231_mixer);
1825 EXPORT_SYMBOL(snd_cs4231_timer);
1826 EXPORT_SYMBOL(snd_cs4231_info_single);
1827 EXPORT_SYMBOL(snd_cs4231_get_single);
1828 EXPORT_SYMBOL(snd_cs4231_put_single);
1829 EXPORT_SYMBOL(snd_cs4231_info_double);
1830 EXPORT_SYMBOL(snd_cs4231_get_double);
1831 EXPORT_SYMBOL(snd_cs4231_put_double);
1832
1833 /*
1834  *  INIT part
1835  */
1836
1837 static int __init alsa_cs4231_init(void)
1838 {
1839         return 0;
1840 }
1841
1842 static void __exit alsa_cs4231_exit(void)
1843 {
1844 }
1845
1846 module_init(alsa_cs4231_init)
1847 module_exit(alsa_cs4231_exit)