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