sound/pci/es1938.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Driver for ESS Solo-1 (ES1938, ES1946, ES1969) soundcard
   4  *  Copyright (c) by Jaromir Koutek <miri@punknet.cz>,
   5  *                   Jaroslav Kysela <perex@perex.cz>,
   6  *                   Thomas Sailer <sailer@ife.ee.ethz.ch>,
   7  *                   Abramo Bagnara <abramo@alsa-project.org>,
   8  *                   Markus Gruber <gruber@eikon.tum.de>
   9  *
  10  * Rewritten from sonicvibes.c source.
  11  *
  12  *  TODO:
  13  *    Rewrite better spinlocks
  14  */
  15
  16 /*
  17   NOTES:
  18   - Capture data is written unaligned starting from dma_base + 1 so I need to
  19     disable mmap and to add a copy callback.
  20   - After several cycle of the following:
  21     while : ; do arecord -d1 -f cd -t raw | aplay -f cd ; done
  22     a "playback write error (DMA or IRQ trouble?)" may happen.
  23     This is due to playback interrupts not generated.
  24     I suspect a timing issue.
  25   - Sometimes the interrupt handler is invoked wrongly during playback.
  26     This generates some harmless "Unexpected hw_pointer: wrong interrupt
  27     acknowledge".
  28     I've seen that using small period sizes.
  29     Reproducible with:
  30     mpg123 test.mp3 &
  31     hdparm -t -T /dev/hda
  32 */
  33
  34
  35 #include <linux/init.h>
  36 #include <linux/interrupt.h>
  37 #include <linux/pci.h>
  38 #include <linux/slab.h>
  39 #include <linux/gameport.h>
  40 #include <linux/module.h>
  41 #include <linux/delay.h>
  42 #include <linux/dma-mapping.h>
  43 #include <linux/io.h>
  44 #include <sound/core.h>
  45 #include <sound/control.h>
  46 #include <sound/pcm.h>
  47 #include <sound/opl3.h>
  48 #include <sound/mpu401.h>
  49 #include <sound/initval.h>
  50 #include <sound/tlv.h>
  51
  52 MODULE_AUTHOR("Jaromir Koutek <miri@punknet.cz>");
  53 MODULE_DESCRIPTION("ESS Solo-1");
  54 MODULE_LICENSE("GPL");
  55
  56 #if IS_REACHABLE(CONFIG_GAMEPORT)
  57 #define SUPPORT_JOYSTICK 1
  58 #endif
  59
  60 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  61 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  62 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  63
  64 module_param_array(index, int, NULL, 0444);
  65 MODULE_PARM_DESC(index, "Index value for ESS Solo-1 soundcard.");
  66 module_param_array(id, charp, NULL, 0444);
  67 MODULE_PARM_DESC(id, "ID string for ESS Solo-1 soundcard.");
  68 module_param_array(enable, bool, NULL, 0444);
  69 MODULE_PARM_DESC(enable, "Enable ESS Solo-1 soundcard.");
  70
  71 #define SLIO_REG(chip, x) ((chip)->io_port + ESSIO_REG_##x)
  72
  73 #define SLDM_REG(chip, x) ((chip)->ddma_port + ESSDM_REG_##x)
  74
  75 #define SLSB_REG(chip, x) ((chip)->sb_port + ESSSB_REG_##x)
  76
  77 #define SL_PCI_LEGACYCONTROL            0x40
  78 #define SL_PCI_CONFIG                   0x50
  79 #define SL_PCI_DDMACONTROL              0x60
  80
  81 #define ESSIO_REG_AUDIO2DMAADDR         0
  82 #define ESSIO_REG_AUDIO2DMACOUNT        4
  83 #define ESSIO_REG_AUDIO2MODE            6
  84 #define ESSIO_REG_IRQCONTROL            7
  85
  86 #define ESSDM_REG_DMAADDR               0x00
  87 #define ESSDM_REG_DMACOUNT              0x04
  88 #define ESSDM_REG_DMACOMMAND            0x08
  89 #define ESSDM_REG_DMASTATUS             0x08
  90 #define ESSDM_REG_DMAMODE               0x0b
  91 #define ESSDM_REG_DMACLEAR              0x0d
  92 #define ESSDM_REG_DMAMASK               0x0f
  93
  94 #define ESSSB_REG_FMLOWADDR             0x00
  95 #define ESSSB_REG_FMHIGHADDR            0x02
  96 #define ESSSB_REG_MIXERADDR             0x04
  97 #define ESSSB_REG_MIXERDATA             0x05
  98
  99 #define ESSSB_IREG_AUDIO1               0x14
 100 #define ESSSB_IREG_MICMIX               0x1a
 101 #define ESSSB_IREG_RECSRC               0x1c
 102 #define ESSSB_IREG_MASTER               0x32
 103 #define ESSSB_IREG_FM                   0x36
 104 #define ESSSB_IREG_AUXACD               0x38
 105 #define ESSSB_IREG_AUXB                 0x3a
 106 #define ESSSB_IREG_PCSPEAKER            0x3c
 107 #define ESSSB_IREG_LINE                 0x3e
 108 #define ESSSB_IREG_SPATCONTROL          0x50
 109 #define ESSSB_IREG_SPATLEVEL            0x52
 110 #define ESSSB_IREG_MASTER_LEFT          0x60
 111 #define ESSSB_IREG_MASTER_RIGHT         0x62
 112 #define ESSSB_IREG_MPU401CONTROL        0x64
 113 #define ESSSB_IREG_MICMIXRECORD         0x68
 114 #define ESSSB_IREG_AUDIO2RECORD         0x69
 115 #define ESSSB_IREG_AUXACDRECORD         0x6a
 116 #define ESSSB_IREG_FMRECORD             0x6b
 117 #define ESSSB_IREG_AUXBRECORD           0x6c
 118 #define ESSSB_IREG_MONO                 0x6d
 119 #define ESSSB_IREG_LINERECORD           0x6e
 120 #define ESSSB_IREG_MONORECORD           0x6f
 121 #define ESSSB_IREG_AUDIO2SAMPLE         0x70
 122 #define ESSSB_IREG_AUDIO2MODE           0x71
 123 #define ESSSB_IREG_AUDIO2FILTER         0x72
 124 #define ESSSB_IREG_AUDIO2TCOUNTL        0x74
 125 #define ESSSB_IREG_AUDIO2TCOUNTH        0x76
 126 #define ESSSB_IREG_AUDIO2CONTROL1       0x78
 127 #define ESSSB_IREG_AUDIO2CONTROL2       0x7a
 128 #define ESSSB_IREG_AUDIO2               0x7c
 129
 130 #define ESSSB_REG_RESET                 0x06
 131
 132 #define ESSSB_REG_READDATA              0x0a
 133 #define ESSSB_REG_WRITEDATA             0x0c
 134 #define ESSSB_REG_READSTATUS            0x0c
 135
 136 #define ESSSB_REG_STATUS                0x0e
 137
 138 #define ESS_CMD_EXTSAMPLERATE           0xa1
 139 #define ESS_CMD_FILTERDIV               0xa2
 140 #define ESS_CMD_DMACNTRELOADL           0xa4
 141 #define ESS_CMD_DMACNTRELOADH           0xa5
 142 #define ESS_CMD_ANALOGCONTROL           0xa8
 143 #define ESS_CMD_IRQCONTROL              0xb1
 144 #define ESS_CMD_DRQCONTROL              0xb2
 145 #define ESS_CMD_RECLEVEL                0xb4
 146 #define ESS_CMD_SETFORMAT               0xb6
 147 #define ESS_CMD_SETFORMAT2              0xb7
 148 #define ESS_CMD_DMACONTROL              0xb8
 149 #define ESS_CMD_DMATYPE                 0xb9
 150 #define ESS_CMD_OFFSETLEFT              0xba
 151 #define ESS_CMD_OFFSETRIGHT             0xbb
 152 #define ESS_CMD_READREG                 0xc0
 153 #define ESS_CMD_ENABLEEXT               0xc6
 154 #define ESS_CMD_PAUSEDMA                0xd0
 155 #define ESS_CMD_ENABLEAUDIO1            0xd1
 156 #define ESS_CMD_STOPAUDIO1              0xd3
 157 #define ESS_CMD_AUDIO1STATUS            0xd8
 158 #define ESS_CMD_CONTDMA                 0xd4
 159 #define ESS_CMD_TESTIRQ                 0xf2
 160
 161 #define ESS_RECSRC_MIC          0
 162 #define ESS_RECSRC_AUXACD       2
 163 #define ESS_RECSRC_AUXB         5
 164 #define ESS_RECSRC_LINE         6
 165 #define ESS_RECSRC_NONE         7
 166
 167 #define DAC1 0x01
 168 #define ADC1 0x02
 169 #define DAC2 0x04
 170
 171 /*
 172
 173  */
 174
 175 #define SAVED_REG_SIZE  32 /* max. number of registers to save */
 176
 177 struct es1938 {
 178         int irq;
 179
 180         unsigned long io_port;
 181         unsigned long sb_port;
 182         unsigned long vc_port;
 183         unsigned long mpu_port;
 184         unsigned long game_port;
 185         unsigned long ddma_port;
 186
 187         unsigned char irqmask;
 188         unsigned char revision;
 189
 190         struct snd_kcontrol *hw_volume;
 191         struct snd_kcontrol *hw_switch;
 192         struct snd_kcontrol *master_volume;
 193         struct snd_kcontrol *master_switch;
 194
 195         struct pci_dev *pci;
 196         struct snd_card *card;
 197         struct snd_pcm *pcm;
 198         struct snd_pcm_substream *capture_substream;
 199         struct snd_pcm_substream *playback1_substream;
 200         struct snd_pcm_substream *playback2_substream;
 201         struct snd_rawmidi *rmidi;
 202
 203         unsigned int dma1_size;
 204         unsigned int dma2_size;
 205         unsigned int dma1_start;
 206         unsigned int dma2_start;
 207         unsigned int dma1_shift;
 208         unsigned int dma2_shift;
 209         unsigned int last_capture_dmaaddr;
 210         unsigned int active;
 211
 212         spinlock_t reg_lock;
 213         spinlock_t mixer_lock;
 214         struct snd_info_entry *proc_entry;
 215
 216 #ifdef SUPPORT_JOYSTICK
 217         struct gameport *gameport;
 218 #endif
 219 #ifdef CONFIG_PM_SLEEP
 220         unsigned char saved_regs[SAVED_REG_SIZE];
 221 #endif
 222 };
 223
 224 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
 225
 226 static const struct pci_device_id snd_es1938_ids[] = {
 227         { PCI_VDEVICE(ESS, 0x1969), 0, },   /* Solo-1 */
 228         { 0, }
 229 };
 230
 231 MODULE_DEVICE_TABLE(pci, snd_es1938_ids);
 232
 233 #define RESET_LOOP_TIMEOUT      0x10000
 234 #define WRITE_LOOP_TIMEOUT      0x10000
 235 #define GET_LOOP_TIMEOUT        0x01000
 236
 237 /* -----------------------------------------------------------------
 238  * Write to a mixer register
 239  * -----------------------------------------------------------------*/
 240 static void snd_es1938_mixer_write(struct es1938 *chip, unsigned char reg, unsigned char val)
 241 {
 242         unsigned long flags;
 243         spin_lock_irqsave(&chip->mixer_lock, flags);
 244         outb(reg, SLSB_REG(chip, MIXERADDR));
 245         outb(val, SLSB_REG(chip, MIXERDATA));
 246         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 247         dev_dbg(chip->card->dev, "Mixer reg %02x set to %02x\n", reg, val);
 248 }
 249
 250 /* -----------------------------------------------------------------
 251  * Read from a mixer register
 252  * -----------------------------------------------------------------*/
 253 static int snd_es1938_mixer_read(struct es1938 *chip, unsigned char reg)
 254 {
 255         int data;
 256         unsigned long flags;
 257         spin_lock_irqsave(&chip->mixer_lock, flags);
 258         outb(reg, SLSB_REG(chip, MIXERADDR));
 259         data = inb(SLSB_REG(chip, MIXERDATA));
 260         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 261         dev_dbg(chip->card->dev, "Mixer reg %02x now is %02x\n", reg, data);
 262         return data;
 263 }
 264
 265 /* -----------------------------------------------------------------
 266  * Write to some bits of a mixer register (return old value)
 267  * -----------------------------------------------------------------*/
 268 static int snd_es1938_mixer_bits(struct es1938 *chip, unsigned char reg,
 269                                  unsigned char mask, unsigned char val)
 270 {
 271         unsigned long flags;
 272         unsigned char old, new, oval;
 273         spin_lock_irqsave(&chip->mixer_lock, flags);
 274         outb(reg, SLSB_REG(chip, MIXERADDR));
 275         old = inb(SLSB_REG(chip, MIXERDATA));
 276         oval = old & mask;
 277         if (val != oval) {
 278                 new = (old & ~mask) | (val & mask);
 279                 outb(new, SLSB_REG(chip, MIXERDATA));
 280                 dev_dbg(chip->card->dev,
 281                         "Mixer reg %02x was %02x, set to %02x\n",
 282                            reg, old, new);
 283         }
 284         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 285         return oval;
 286 }
 287
 288 /* -----------------------------------------------------------------
 289  * Write command to Controller Registers
 290  * -----------------------------------------------------------------*/
 291 static void snd_es1938_write_cmd(struct es1938 *chip, unsigned char cmd)
 292 {
 293         int i;
 294         unsigned char v;
 295         for (i = 0; i < WRITE_LOOP_TIMEOUT; i++) {
 296                 v = inb(SLSB_REG(chip, READSTATUS));
 297                 if (!(v & 0x80)) {
 298                         outb(cmd, SLSB_REG(chip, WRITEDATA));
 299                         return;
 300                 }
 301         }
 302         dev_err(chip->card->dev,
 303                 "snd_es1938_write_cmd timeout (0x02%x/0x02%x)\n", cmd, v);
 304 }
 305
 306 /* -----------------------------------------------------------------
 307  * Read the Read Data Buffer
 308  * -----------------------------------------------------------------*/
 309 static int snd_es1938_get_byte(struct es1938 *chip)
 310 {
 311         int i;
 312         unsigned char v;
 313         for (i = GET_LOOP_TIMEOUT; i; i--) {
 314                 v = inb(SLSB_REG(chip, STATUS));
 315                 if (v & 0x80)
 316                         return inb(SLSB_REG(chip, READDATA));
 317         }
 318         dev_err(chip->card->dev, "get_byte timeout: status 0x02%x\n", v);
 319         return -ENODEV;
 320 }
 321
 322 /* -----------------------------------------------------------------
 323  * Write value cmd register
 324  * -----------------------------------------------------------------*/
 325 static void snd_es1938_write(struct es1938 *chip, unsigned char reg, unsigned char val)
 326 {
 327         unsigned long flags;
 328         spin_lock_irqsave(&chip->reg_lock, flags);
 329         snd_es1938_write_cmd(chip, reg);
 330         snd_es1938_write_cmd(chip, val);
 331         spin_unlock_irqrestore(&chip->reg_lock, flags);
 332         dev_dbg(chip->card->dev, "Reg %02x set to %02x\n", reg, val);
 333 }
 334
 335 /* -----------------------------------------------------------------
 336  * Read data from cmd register and return it
 337  * -----------------------------------------------------------------*/
 338 static unsigned char snd_es1938_read(struct es1938 *chip, unsigned char reg)
 339 {
 340         unsigned char val;
 341         unsigned long flags;
 342         spin_lock_irqsave(&chip->reg_lock, flags);
 343         snd_es1938_write_cmd(chip, ESS_CMD_READREG);
 344         snd_es1938_write_cmd(chip, reg);
 345         val = snd_es1938_get_byte(chip);
 346         spin_unlock_irqrestore(&chip->reg_lock, flags);
 347         dev_dbg(chip->card->dev, "Reg %02x now is %02x\n", reg, val);
 348         return val;
 349 }
 350
 351 /* -----------------------------------------------------------------
 352  * Write data to cmd register and return old value
 353  * -----------------------------------------------------------------*/
 354 static int snd_es1938_bits(struct es1938 *chip, unsigned char reg, unsigned char mask,
 355                            unsigned char val)
 356 {
 357         unsigned long flags;
 358         unsigned char old, new, oval;
 359         spin_lock_irqsave(&chip->reg_lock, flags);
 360         snd_es1938_write_cmd(chip, ESS_CMD_READREG);
 361         snd_es1938_write_cmd(chip, reg);
 362         old = snd_es1938_get_byte(chip);
 363         oval = old & mask;
 364         if (val != oval) {
 365                 snd_es1938_write_cmd(chip, reg);
 366                 new = (old & ~mask) | (val & mask);
 367                 snd_es1938_write_cmd(chip, new);
 368                 dev_dbg(chip->card->dev, "Reg %02x was %02x, set to %02x\n",
 369                            reg, old, new);
 370         }
 371         spin_unlock_irqrestore(&chip->reg_lock, flags);
 372         return oval;
 373 }
 374
 375 /* --------------------------------------------------------------------
 376  * Reset the chip
 377  * --------------------------------------------------------------------*/
 378 static void snd_es1938_reset(struct es1938 *chip)
 379 {
 380         int i;
 381
 382         outb(3, SLSB_REG(chip, RESET));
 383         inb(SLSB_REG(chip, RESET));
 384         outb(0, SLSB_REG(chip, RESET));
 385         for (i = 0; i < RESET_LOOP_TIMEOUT; i++) {
 386                 if (inb(SLSB_REG(chip, STATUS)) & 0x80) {
 387                         if (inb(SLSB_REG(chip, READDATA)) == 0xaa)
 388                                 goto __next;
 389                 }
 390         }
 391         dev_err(chip->card->dev, "ESS Solo-1 reset failed\n");
 392
 393      __next:
 394         snd_es1938_write_cmd(chip, ESS_CMD_ENABLEEXT);
 395
 396         /* Demand transfer DMA: 4 bytes per DMA request */
 397         snd_es1938_write(chip, ESS_CMD_DMATYPE, 2);
 398
 399         /* Change behaviour of register A1
 400            4x oversampling
 401            2nd channel DAC asynchronous */
 402         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2MODE, 0x32);
 403         /* enable/select DMA channel and IRQ channel */
 404         snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
 405         snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
 406         snd_es1938_write_cmd(chip, ESS_CMD_ENABLEAUDIO1);
 407         /* Set spatializer parameters to recommended values */
 408         snd_es1938_mixer_write(chip, 0x54, 0x8f);
 409         snd_es1938_mixer_write(chip, 0x56, 0x95);
 410         snd_es1938_mixer_write(chip, 0x58, 0x94);
 411         snd_es1938_mixer_write(chip, 0x5a, 0x80);
 412 }
 413
 414 /* --------------------------------------------------------------------
 415  * Reset the FIFOs
 416  * --------------------------------------------------------------------*/
 417 static void snd_es1938_reset_fifo(struct es1938 *chip)
 418 {
 419         outb(2, SLSB_REG(chip, RESET));
 420         outb(0, SLSB_REG(chip, RESET));
 421 }
 422
 423 static const struct snd_ratnum clocks[2] = {
 424         {
 425                 .num = 793800,
 426                 .den_min = 1,
 427                 .den_max = 128,
 428                 .den_step = 1,
 429         },
 430         {
 431                 .num = 768000,
 432                 .den_min = 1,
 433                 .den_max = 128,
 434                 .den_step = 1,
 435         }
 436 };
 437
 438 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
 439         .nrats = 2,
 440         .rats = clocks,
 441 };
 442
 443
 444 static void snd_es1938_rate_set(struct es1938 *chip,
 445                                 struct snd_pcm_substream *substream,
 446                                 int mode)
 447 {
 448         unsigned int bits, div0;
 449         struct snd_pcm_runtime *runtime = substream->runtime;
 450         if (runtime->rate_num == clocks[0].num)
 451                 bits = 128 - runtime->rate_den;
 452         else
 453                 bits = 256 - runtime->rate_den;
 454
 455         /* set filter register */
 456         div0 = 256 - 7160000*20/(8*82*runtime->rate);
 457
 458         if (mode == DAC2) {
 459                 snd_es1938_mixer_write(chip, 0x70, bits);
 460                 snd_es1938_mixer_write(chip, 0x72, div0);
 461         } else {
 462                 snd_es1938_write(chip, 0xA1, bits);
 463                 snd_es1938_write(chip, 0xA2, div0);
 464         }
 465 }
 466
 467 /* --------------------------------------------------------------------
 468  * Configure Solo1 builtin DMA Controller
 469  * --------------------------------------------------------------------*/
 470
 471 static void snd_es1938_playback1_setdma(struct es1938 *chip)
 472 {
 473         outb(0x00, SLIO_REG(chip, AUDIO2MODE));
 474         outl(chip->dma2_start, SLIO_REG(chip, AUDIO2DMAADDR));
 475         outw(0, SLIO_REG(chip, AUDIO2DMACOUNT));
 476         outw(chip->dma2_size, SLIO_REG(chip, AUDIO2DMACOUNT));
 477 }
 478
 479 static void snd_es1938_playback2_setdma(struct es1938 *chip)
 480 {
 481         /* Enable DMA controller */
 482         outb(0xc4, SLDM_REG(chip, DMACOMMAND));
 483         /* 1. Master reset */
 484         outb(0, SLDM_REG(chip, DMACLEAR));
 485         /* 2. Mask DMA */
 486         outb(1, SLDM_REG(chip, DMAMASK));
 487         outb(0x18, SLDM_REG(chip, DMAMODE));
 488         outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
 489         outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
 490         /* 3. Unmask DMA */
 491         outb(0, SLDM_REG(chip, DMAMASK));
 492 }
 493
 494 static void snd_es1938_capture_setdma(struct es1938 *chip)
 495 {
 496         /* Enable DMA controller */
 497         outb(0xc4, SLDM_REG(chip, DMACOMMAND));
 498         /* 1. Master reset */
 499         outb(0, SLDM_REG(chip, DMACLEAR));
 500         /* 2. Mask DMA */
 501         outb(1, SLDM_REG(chip, DMAMASK));
 502         outb(0x14, SLDM_REG(chip, DMAMODE));
 503         outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
 504         chip->last_capture_dmaaddr = chip->dma1_start;
 505         outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
 506         /* 3. Unmask DMA */
 507         outb(0, SLDM_REG(chip, DMAMASK));
 508 }
 509
 510 /* ----------------------------------------------------------------------
 511  *
 512  *                           *** PCM part ***
 513  */
 514
 515 static int snd_es1938_capture_trigger(struct snd_pcm_substream *substream,
 516                                       int cmd)
 517 {
 518         struct es1938 *chip = snd_pcm_substream_chip(substream);
 519         int val;
 520         switch (cmd) {
 521         case SNDRV_PCM_TRIGGER_START:
 522         case SNDRV_PCM_TRIGGER_RESUME:
 523                 val = 0x0f;
 524                 chip->active |= ADC1;
 525                 break;
 526         case SNDRV_PCM_TRIGGER_STOP:
 527         case SNDRV_PCM_TRIGGER_SUSPEND:
 528                 val = 0x00;
 529                 chip->active &= ~ADC1;
 530                 break;
 531         default:
 532                 return -EINVAL;
 533         }
 534         snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
 535         return 0;
 536 }
 537
 538 static int snd_es1938_playback1_trigger(struct snd_pcm_substream *substream,
 539                                         int cmd)
 540 {
 541         struct es1938 *chip = snd_pcm_substream_chip(substream);
 542         switch (cmd) {
 543         case SNDRV_PCM_TRIGGER_START:
 544         case SNDRV_PCM_TRIGGER_RESUME:
 545                 /* According to the documentation this should be:
 546                    0x13 but that value may randomly swap stereo channels */
 547                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
 548                 udelay(10);
 549                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x93);
 550                 /* This two stage init gives the FIFO -> DAC connection time to
 551                  * settle before first data from DMA flows in.  This should ensure
 552                  * no swapping of stereo channels.  Report a bug if otherwise :-) */
 553                 outb(0x0a, SLIO_REG(chip, AUDIO2MODE));
 554                 chip->active |= DAC2;
 555                 break;
 556         case SNDRV_PCM_TRIGGER_STOP:
 557         case SNDRV_PCM_TRIGGER_SUSPEND:
 558                 outb(0, SLIO_REG(chip, AUDIO2MODE));
 559                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
 560                 chip->active &= ~DAC2;
 561                 break;
 562         default:
 563                 return -EINVAL;
 564         }
 565         return 0;
 566 }
 567
 568 static int snd_es1938_playback2_trigger(struct snd_pcm_substream *substream,
 569                                         int cmd)
 570 {
 571         struct es1938 *chip = snd_pcm_substream_chip(substream);
 572         int val;
 573         switch (cmd) {
 574         case SNDRV_PCM_TRIGGER_START:
 575         case SNDRV_PCM_TRIGGER_RESUME:
 576                 val = 5;
 577                 chip->active |= DAC1;
 578                 break;
 579         case SNDRV_PCM_TRIGGER_STOP:
 580         case SNDRV_PCM_TRIGGER_SUSPEND:
 581                 val = 0;
 582                 chip->active &= ~DAC1;
 583                 break;
 584         default:
 585                 return -EINVAL;
 586         }
 587         snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
 588         return 0;
 589 }
 590
 591 static int snd_es1938_playback_trigger(struct snd_pcm_substream *substream,
 592                                        int cmd)
 593 {
 594         switch (substream->number) {
 595         case 0:
 596                 return snd_es1938_playback1_trigger(substream, cmd);
 597         case 1:
 598                 return snd_es1938_playback2_trigger(substream, cmd);
 599         }
 600         snd_BUG();
 601         return -EINVAL;
 602 }
 603
 604 /* --------------------------------------------------------------------
 605  * First channel for Extended Mode Audio 1 ADC Operation
 606  * --------------------------------------------------------------------*/
 607 static int snd_es1938_capture_prepare(struct snd_pcm_substream *substream)
 608 {
 609         struct es1938 *chip = snd_pcm_substream_chip(substream);
 610         struct snd_pcm_runtime *runtime = substream->runtime;
 611         int u, is8, mono;
 612         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 613         unsigned int count = snd_pcm_lib_period_bytes(substream);
 614
 615         chip->dma1_size = size;
 616         chip->dma1_start = runtime->dma_addr;
 617
 618         mono = (runtime->channels > 1) ? 0 : 1;
 619         is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
 620         u = snd_pcm_format_unsigned(runtime->format);
 621
 622         chip->dma1_shift = 2 - mono - is8;
 623
 624         snd_es1938_reset_fifo(chip);
 625
 626         /* program type */
 627         snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
 628
 629         /* set clock and counters */
 630         snd_es1938_rate_set(chip, substream, ADC1);
 631
 632         count = 0x10000 - count;
 633         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
 634         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
 635
 636         /* initialize and configure ADC */
 637         snd_es1938_write(chip, ESS_CMD_SETFORMAT2, u ? 0x51 : 0x71);
 638         snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 0x90 |
 639                        (u ? 0x00 : 0x20) |
 640                        (is8 ? 0x00 : 0x04) |
 641                        (mono ? 0x40 : 0x08));
 642
 643         //      snd_es1938_reset_fifo(chip);
 644
 645         /* 11. configure system interrupt controller and DMA controller */
 646         snd_es1938_capture_setdma(chip);
 647
 648         return 0;
 649 }
 650
 651
 652 /* ------------------------------------------------------------------------------
 653  * Second Audio channel DAC Operation
 654  * ------------------------------------------------------------------------------*/
 655 static int snd_es1938_playback1_prepare(struct snd_pcm_substream *substream)
 656 {
 657         struct es1938 *chip = snd_pcm_substream_chip(substream);
 658         struct snd_pcm_runtime *runtime = substream->runtime;
 659         int u, is8, mono;
 660         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 661         unsigned int count = snd_pcm_lib_period_bytes(substream);
 662
 663         chip->dma2_size = size;
 664         chip->dma2_start = runtime->dma_addr;
 665
 666         mono = (runtime->channels > 1) ? 0 : 1;
 667         is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
 668         u = snd_pcm_format_unsigned(runtime->format);
 669
 670         chip->dma2_shift = 2 - mono - is8;
 671
 672         snd_es1938_reset_fifo(chip);
 673
 674         /* set clock and counters */
 675         snd_es1938_rate_set(chip, substream, DAC2);
 676
 677         count >>= 1;
 678         count = 0x10000 - count;
 679         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTL, count & 0xff);
 680         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTH, count >> 8);
 681
 682         /* initialize and configure Audio 2 DAC */
 683         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x40 | (u ? 0 : 4) |
 684                                (mono ? 0 : 2) | (is8 ? 0 : 1));
 685
 686         /* program DMA */
 687         snd_es1938_playback1_setdma(chip);
 688
 689         return 0;
 690 }
 691
 692 static int snd_es1938_playback2_prepare(struct snd_pcm_substream *substream)
 693 {
 694         struct es1938 *chip = snd_pcm_substream_chip(substream);
 695         struct snd_pcm_runtime *runtime = substream->runtime;
 696         int u, is8, mono;
 697         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 698         unsigned int count = snd_pcm_lib_period_bytes(substream);
 699
 700         chip->dma1_size = size;
 701         chip->dma1_start = runtime->dma_addr;
 702
 703         mono = (runtime->channels > 1) ? 0 : 1;
 704         is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
 705         u = snd_pcm_format_unsigned(runtime->format);
 706
 707         chip->dma1_shift = 2 - mono - is8;
 708
 709         count = 0x10000 - count;
 710
 711         /* reset */
 712         snd_es1938_reset_fifo(chip);
 713
 714         snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
 715
 716         /* set clock and counters */
 717         snd_es1938_rate_set(chip, substream, DAC1);
 718         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
 719         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
 720
 721         /* initialized and configure DAC */
 722         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x80 : 0x00);
 723         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x51 : 0x71);
 724         snd_es1938_write(chip, ESS_CMD_SETFORMAT2,
 725                          0x90 | (mono ? 0x40 : 0x08) |
 726                          (is8 ? 0x00 : 0x04) | (u ? 0x00 : 0x20));
 727
 728         /* program DMA */
 729         snd_es1938_playback2_setdma(chip);
 730
 731         return 0;
 732 }
 733
 734 static int snd_es1938_playback_prepare(struct snd_pcm_substream *substream)
 735 {
 736         switch (substream->number) {
 737         case 0:
 738                 return snd_es1938_playback1_prepare(substream);
 739         case 1:
 740                 return snd_es1938_playback2_prepare(substream);
 741         }
 742         snd_BUG();
 743         return -EINVAL;
 744 }
 745
 746 /* during the incrementing of dma counters the DMA register reads sometimes
 747    returns garbage. To ensure a valid hw pointer, the following checks which
 748    should be very unlikely to fail are used:
 749    - is the current DMA address in the valid DMA range ?
 750    - is the sum of DMA address and DMA counter pointing to the last DMA byte ?
 751    One can argue this could differ by one byte depending on which register is
 752    updated first, so the implementation below allows for that.
 753 */
 754 static snd_pcm_uframes_t snd_es1938_capture_pointer(struct snd_pcm_substream *substream)
 755 {
 756         struct es1938 *chip = snd_pcm_substream_chip(substream);
 757         size_t ptr;
 758 #if 0
 759         size_t old, new;
 760         /* This stuff is *needed*, don't ask why - AB */
 761         old = inw(SLDM_REG(chip, DMACOUNT));
 762         while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
 763                 old = new;
 764         ptr = chip->dma1_size - 1 - new;
 765 #else
 766         size_t count;
 767         unsigned int diff;
 768
 769         ptr = inl(SLDM_REG(chip, DMAADDR));
 770         count = inw(SLDM_REG(chip, DMACOUNT));
 771         diff = chip->dma1_start + chip->dma1_size - ptr - count;
 772
 773         if (diff > 3 || ptr < chip->dma1_start
 774               || ptr >= chip->dma1_start+chip->dma1_size)
 775           ptr = chip->last_capture_dmaaddr;            /* bad, use last saved */
 776         else
 777           chip->last_capture_dmaaddr = ptr;            /* good, remember it */
 778
 779         ptr -= chip->dma1_start;
 780 #endif
 781         return ptr >> chip->dma1_shift;
 782 }
 783
 784 static snd_pcm_uframes_t snd_es1938_playback1_pointer(struct snd_pcm_substream *substream)
 785 {
 786         struct es1938 *chip = snd_pcm_substream_chip(substream);
 787         size_t ptr;
 788 #if 1
 789         ptr = chip->dma2_size - inw(SLIO_REG(chip, AUDIO2DMACOUNT));
 790 #else
 791         ptr = inl(SLIO_REG(chip, AUDIO2DMAADDR)) - chip->dma2_start;
 792 #endif
 793         return ptr >> chip->dma2_shift;
 794 }
 795
 796 static snd_pcm_uframes_t snd_es1938_playback2_pointer(struct snd_pcm_substream *substream)
 797 {
 798         struct es1938 *chip = snd_pcm_substream_chip(substream);
 799         size_t ptr;
 800         size_t old, new;
 801 #if 1
 802         /* This stuff is *needed*, don't ask why - AB */
 803         old = inw(SLDM_REG(chip, DMACOUNT));
 804         while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
 805                 old = new;
 806         ptr = chip->dma1_size - 1 - new;
 807 #else
 808         ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
 809 #endif
 810         return ptr >> chip->dma1_shift;
 811 }
 812
 813 static snd_pcm_uframes_t snd_es1938_playback_pointer(struct snd_pcm_substream *substream)
 814 {
 815         switch (substream->number) {
 816         case 0:
 817                 return snd_es1938_playback1_pointer(substream);
 818         case 1:
 819                 return snd_es1938_playback2_pointer(substream);
 820         }
 821         snd_BUG();
 822         return -EINVAL;
 823 }
 824
 825 static int snd_es1938_capture_copy(struct snd_pcm_substream *substream,
 826                                    int channel, unsigned long pos,
 827                                    struct iov_iter *dst, unsigned long count)
 828 {
 829         struct snd_pcm_runtime *runtime = substream->runtime;
 830         struct es1938 *chip = snd_pcm_substream_chip(substream);
 831
 832         if (snd_BUG_ON(pos + count > chip->dma1_size))
 833                 return -EINVAL;
 834         if (pos + count < chip->dma1_size) {
 835                 if (copy_to_iter(runtime->dma_area + pos + 1, count, dst) != count)
 836                         return -EFAULT;
 837         } else {
 838                 if (copy_to_iter(runtime->dma_area + pos + 1, count - 1, dst) != count - 1)
 839                         return -EFAULT;
 840                 if (copy_to_iter(runtime->dma_area, 1, dst) != 1)
 841                         return -EFAULT;
 842         }
 843         return 0;
 844 }
 845
 846 /* ----------------------------------------------------------------------
 847  * Audio1 Capture (ADC)
 848  * ----------------------------------------------------------------------*/
 849 static const struct snd_pcm_hardware snd_es1938_capture =
 850 {
 851         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
 852                                 SNDRV_PCM_INFO_BLOCK_TRANSFER),
 853         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
 854                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
 855         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 856         .rate_min =             6000,
 857         .rate_max =             48000,
 858         .channels_min =         1,
 859         .channels_max =         2,
 860         .buffer_bytes_max =     0x8000,       /* DMA controller screws on higher values */
 861         .period_bytes_min =     64,
 862         .period_bytes_max =     0x8000,
 863         .periods_min =          1,
 864         .periods_max =          1024,
 865         .fifo_size =            256,
 866 };
 867
 868 /* -----------------------------------------------------------------------
 869  * Audio2 Playback (DAC)
 870  * -----------------------------------------------------------------------*/
 871 static const struct snd_pcm_hardware snd_es1938_playback =
 872 {
 873         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 874                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 875                                  SNDRV_PCM_INFO_MMAP_VALID),
 876         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
 877                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
 878         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 879         .rate_min =             6000,
 880         .rate_max =             48000,
 881         .channels_min =         1,
 882         .channels_max =         2,
 883         .buffer_bytes_max =     0x8000,       /* DMA controller screws on higher values */
 884         .period_bytes_min =     64,
 885         .period_bytes_max =     0x8000,
 886         .periods_min =          1,
 887         .periods_max =          1024,
 888         .fifo_size =            256,
 889 };
 890
 891 static int snd_es1938_capture_open(struct snd_pcm_substream *substream)
 892 {
 893         struct es1938 *chip = snd_pcm_substream_chip(substream);
 894         struct snd_pcm_runtime *runtime = substream->runtime;
 895
 896         if (chip->playback2_substream)
 897                 return -EAGAIN;
 898         chip->capture_substream = substream;
 899         runtime->hw = snd_es1938_capture;
 900         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 901                                       &hw_constraints_clocks);
 902         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
 903         return 0;
 904 }
 905
 906 static int snd_es1938_playback_open(struct snd_pcm_substream *substream)
 907 {
 908         struct es1938 *chip = snd_pcm_substream_chip(substream);
 909         struct snd_pcm_runtime *runtime = substream->runtime;
 910
 911         switch (substream->number) {
 912         case 0:
 913                 chip->playback1_substream = substream;
 914                 break;
 915         case 1:
 916                 if (chip->capture_substream)
 917                         return -EAGAIN;
 918                 chip->playback2_substream = substream;
 919                 break;
 920         default:
 921                 snd_BUG();
 922                 return -EINVAL;
 923         }
 924         runtime->hw = snd_es1938_playback;
 925         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 926                                       &hw_constraints_clocks);
 927         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
 928         return 0;
 929 }
 930
 931 static int snd_es1938_capture_close(struct snd_pcm_substream *substream)
 932 {
 933         struct es1938 *chip = snd_pcm_substream_chip(substream);
 934
 935         chip->capture_substream = NULL;
 936         return 0;
 937 }
 938
 939 static int snd_es1938_playback_close(struct snd_pcm_substream *substream)
 940 {
 941         struct es1938 *chip = snd_pcm_substream_chip(substream);
 942
 943         switch (substream->number) {
 944         case 0:
 945                 chip->playback1_substream = NULL;
 946                 break;
 947         case 1:
 948                 chip->playback2_substream = NULL;
 949                 break;
 950         default:
 951                 snd_BUG();
 952                 return -EINVAL;
 953         }
 954         return 0;
 955 }
 956
 957 static const struct snd_pcm_ops snd_es1938_playback_ops = {
 958         .open =         snd_es1938_playback_open,
 959         .close =        snd_es1938_playback_close,
 960         .prepare =      snd_es1938_playback_prepare,
 961         .trigger =      snd_es1938_playback_trigger,
 962         .pointer =      snd_es1938_playback_pointer,
 963 };
 964
 965 static const struct snd_pcm_ops snd_es1938_capture_ops = {
 966         .open =         snd_es1938_capture_open,
 967         .close =        snd_es1938_capture_close,
 968         .prepare =      snd_es1938_capture_prepare,
 969         .trigger =      snd_es1938_capture_trigger,
 970         .pointer =      snd_es1938_capture_pointer,
 971         .copy =         snd_es1938_capture_copy,
 972 };
 973
 974 static int snd_es1938_new_pcm(struct es1938 *chip, int device)
 975 {
 976         struct snd_pcm *pcm;
 977         int err;
 978
 979         err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm);
 980         if (err < 0)
 981                 return err;
 982         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
 983         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
 984
 985         pcm->private_data = chip;
 986         pcm->info_flags = 0;
 987         strcpy(pcm->name, "ESS Solo-1");
 988
 989         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
 990                                        &chip->pci->dev, 64*1024, 64*1024);
 991
 992         chip->pcm = pcm;
 993         return 0;
 994 }
 995
 996 /* -------------------------------------------------------------------
 997  *
 998  *                       *** Mixer part ***
 999  */
1000
1001 static int snd_es1938_info_mux(struct snd_kcontrol *kcontrol,
1002                                struct snd_ctl_elem_info *uinfo)
1003 {
1004         static const char * const texts[8] = {
1005                 "Mic", "Mic Master", "CD", "AOUT",
1006                 "Mic1", "Mix", "Line", "Master"
1007         };
1008
1009         return snd_ctl_enum_info(uinfo, 1, 8, texts);
1010 }
1011
1012 static int snd_es1938_get_mux(struct snd_kcontrol *kcontrol,
1013                               struct snd_ctl_elem_value *ucontrol)
1014 {
1015         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1016         ucontrol->value.enumerated.item[0] = snd_es1938_mixer_read(chip, 0x1c) & 0x07;
1017         return 0;
1018 }
1019
1020 static int snd_es1938_put_mux(struct snd_kcontrol *kcontrol,
1021                               struct snd_ctl_elem_value *ucontrol)
1022 {
1023         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1024         unsigned char val = ucontrol->value.enumerated.item[0];
1025
1026         if (val > 7)
1027                 return -EINVAL;
1028         return snd_es1938_mixer_bits(chip, 0x1c, 0x07, val) != val;
1029 }
1030
1031 #define snd_es1938_info_spatializer_enable      snd_ctl_boolean_mono_info
1032
1033 static int snd_es1938_get_spatializer_enable(struct snd_kcontrol *kcontrol,
1034                                              struct snd_ctl_elem_value *ucontrol)
1035 {
1036         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1037         unsigned char val = snd_es1938_mixer_read(chip, 0x50);
1038         ucontrol->value.integer.value[0] = !!(val & 8);
1039         return 0;
1040 }
1041
1042 static int snd_es1938_put_spatializer_enable(struct snd_kcontrol *kcontrol,
1043                                              struct snd_ctl_elem_value *ucontrol)
1044 {
1045         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1046         unsigned char oval, nval;
1047         int change;
1048         nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
1049         oval = snd_es1938_mixer_read(chip, 0x50) & 0x0c;
1050         change = nval != oval;
1051         if (change) {
1052                 snd_es1938_mixer_write(chip, 0x50, nval & ~0x04);
1053                 snd_es1938_mixer_write(chip, 0x50, nval);
1054         }
1055         return change;
1056 }
1057
1058 static int snd_es1938_info_hw_volume(struct snd_kcontrol *kcontrol,
1059                                      struct snd_ctl_elem_info *uinfo)
1060 {
1061         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1062         uinfo->count = 2;
1063         uinfo->value.integer.min = 0;
1064         uinfo->value.integer.max = 63;
1065         return 0;
1066 }
1067
1068 static int snd_es1938_get_hw_volume(struct snd_kcontrol *kcontrol,
1069                                     struct snd_ctl_elem_value *ucontrol)
1070 {
1071         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1072         ucontrol->value.integer.value[0] = snd_es1938_mixer_read(chip, 0x61) & 0x3f;
1073         ucontrol->value.integer.value[1] = snd_es1938_mixer_read(chip, 0x63) & 0x3f;
1074         return 0;
1075 }
1076
1077 #define snd_es1938_info_hw_switch               snd_ctl_boolean_stereo_info
1078
1079 static int snd_es1938_get_hw_switch(struct snd_kcontrol *kcontrol,
1080                                     struct snd_ctl_elem_value *ucontrol)
1081 {
1082         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1083         ucontrol->value.integer.value[0] = !(snd_es1938_mixer_read(chip, 0x61) & 0x40);
1084         ucontrol->value.integer.value[1] = !(snd_es1938_mixer_read(chip, 0x63) & 0x40);
1085         return 0;
1086 }
1087
1088 static void snd_es1938_hwv_free(struct snd_kcontrol *kcontrol)
1089 {
1090         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1091         chip->master_volume = NULL;
1092         chip->master_switch = NULL;
1093         chip->hw_volume = NULL;
1094         chip->hw_switch = NULL;
1095 }
1096
1097 static int snd_es1938_reg_bits(struct es1938 *chip, unsigned char reg,
1098                                unsigned char mask, unsigned char val)
1099 {
1100         if (reg < 0xa0)
1101                 return snd_es1938_mixer_bits(chip, reg, mask, val);
1102         else
1103                 return snd_es1938_bits(chip, reg, mask, val);
1104 }
1105
1106 static int snd_es1938_reg_read(struct es1938 *chip, unsigned char reg)
1107 {
1108         if (reg < 0xa0)
1109                 return snd_es1938_mixer_read(chip, reg);
1110         else
1111                 return snd_es1938_read(chip, reg);
1112 }
1113
1114 #define ES1938_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
1115 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1116   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1117   .name = xname, .index = xindex, \
1118   .info = snd_es1938_info_single, \
1119   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1120   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
1121   .tlv = { .p = xtlv } }
1122 #define ES1938_SINGLE(xname, xindex, reg, shift, mask, invert) \
1123 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1124   .info = snd_es1938_info_single, \
1125   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1126   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1127
1128 static int snd_es1938_info_single(struct snd_kcontrol *kcontrol,
1129                                   struct snd_ctl_elem_info *uinfo)
1130 {
1131         int mask = (kcontrol->private_value >> 16) & 0xff;
1132
1133         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1134         uinfo->count = 1;
1135         uinfo->value.integer.min = 0;
1136         uinfo->value.integer.max = mask;
1137         return 0;
1138 }
1139
1140 static int snd_es1938_get_single(struct snd_kcontrol *kcontrol,
1141                                  struct snd_ctl_elem_value *ucontrol)
1142 {
1143         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1144         int reg = kcontrol->private_value & 0xff;
1145         int shift = (kcontrol->private_value >> 8) & 0xff;
1146         int mask = (kcontrol->private_value >> 16) & 0xff;
1147         int invert = (kcontrol->private_value >> 24) & 0xff;
1148         int val;
1149
1150         val = snd_es1938_reg_read(chip, reg);
1151         ucontrol->value.integer.value[0] = (val >> shift) & mask;
1152         if (invert)
1153                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1154         return 0;
1155 }
1156
1157 static int snd_es1938_put_single(struct snd_kcontrol *kcontrol,
1158                                  struct snd_ctl_elem_value *ucontrol)
1159 {
1160         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1161         int reg = kcontrol->private_value & 0xff;
1162         int shift = (kcontrol->private_value >> 8) & 0xff;
1163         int mask = (kcontrol->private_value >> 16) & 0xff;
1164         int invert = (kcontrol->private_value >> 24) & 0xff;
1165         unsigned char val;
1166
1167         val = (ucontrol->value.integer.value[0] & mask);
1168         if (invert)
1169                 val = mask - val;
1170         mask <<= shift;
1171         val <<= shift;
1172         return snd_es1938_reg_bits(chip, reg, mask, val) != val;
1173 }
1174
1175 #define ES1938_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
1176 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1177   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1178   .name = xname, .index = xindex, \
1179   .info = snd_es1938_info_double, \
1180   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1181   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22), \
1182   .tlv = { .p = xtlv } }
1183 #define ES1938_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1184 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1185   .info = snd_es1938_info_double, \
1186   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1187   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1188
1189 static int snd_es1938_info_double(struct snd_kcontrol *kcontrol,
1190                                   struct snd_ctl_elem_info *uinfo)
1191 {
1192         int mask = (kcontrol->private_value >> 24) & 0xff;
1193
1194         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1195         uinfo->count = 2;
1196         uinfo->value.integer.min = 0;
1197         uinfo->value.integer.max = mask;
1198         return 0;
1199 }
1200
1201 static int snd_es1938_get_double(struct snd_kcontrol *kcontrol,
1202                                  struct snd_ctl_elem_value *ucontrol)
1203 {
1204         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1205         int left_reg = kcontrol->private_value & 0xff;
1206         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1207         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1208         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1209         int mask = (kcontrol->private_value >> 24) & 0xff;
1210         int invert = (kcontrol->private_value >> 22) & 1;
1211         unsigned char left, right;
1212
1213         left = snd_es1938_reg_read(chip, left_reg);
1214         if (left_reg != right_reg)
1215                 right = snd_es1938_reg_read(chip, right_reg);
1216         else
1217                 right = left;
1218         ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1219         ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1220         if (invert) {
1221                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1222                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1223         }
1224         return 0;
1225 }
1226
1227 static int snd_es1938_put_double(struct snd_kcontrol *kcontrol,
1228                                  struct snd_ctl_elem_value *ucontrol)
1229 {
1230         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1231         int left_reg = kcontrol->private_value & 0xff;
1232         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1233         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1234         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1235         int mask = (kcontrol->private_value >> 24) & 0xff;
1236         int invert = (kcontrol->private_value >> 22) & 1;
1237         int change;
1238         unsigned char val1, val2, mask1, mask2;
1239
1240         val1 = ucontrol->value.integer.value[0] & mask;
1241         val2 = ucontrol->value.integer.value[1] & mask;
1242         if (invert) {
1243                 val1 = mask - val1;
1244                 val2 = mask - val2;
1245         }
1246         val1 <<= shift_left;
1247         val2 <<= shift_right;
1248         mask1 = mask << shift_left;
1249         mask2 = mask << shift_right;
1250         if (left_reg != right_reg) {
1251                 change = 0;
1252                 if (snd_es1938_reg_bits(chip, left_reg, mask1, val1) != val1)
1253                         change = 1;
1254                 if (snd_es1938_reg_bits(chip, right_reg, mask2, val2) != val2)
1255                         change = 1;
1256         } else {
1257                 change = (snd_es1938_reg_bits(chip, left_reg, mask1 | mask2,
1258                                               val1 | val2) != (val1 | val2));
1259         }
1260         return change;
1261 }
1262
1263 static const DECLARE_TLV_DB_RANGE(db_scale_master,
1264         0, 54, TLV_DB_SCALE_ITEM(-3600, 50, 1),
1265         54, 63, TLV_DB_SCALE_ITEM(-900, 100, 0),
1266 );
1267
1268 static const DECLARE_TLV_DB_RANGE(db_scale_audio1,
1269         0, 8, TLV_DB_SCALE_ITEM(-3300, 300, 1),
1270         8, 15, TLV_DB_SCALE_ITEM(-900, 150, 0),
1271 );
1272
1273 static const DECLARE_TLV_DB_RANGE(db_scale_audio2,
1274         0, 8, TLV_DB_SCALE_ITEM(-3450, 300, 1),
1275         8, 15, TLV_DB_SCALE_ITEM(-1050, 150, 0),
1276 );
1277
1278 static const DECLARE_TLV_DB_RANGE(db_scale_mic,
1279         0, 8, TLV_DB_SCALE_ITEM(-2400, 300, 1),
1280         8, 15, TLV_DB_SCALE_ITEM(0, 150, 0),
1281 );
1282
1283 static const DECLARE_TLV_DB_RANGE(db_scale_line,
1284         0, 8, TLV_DB_SCALE_ITEM(-3150, 300, 1),
1285         8, 15, TLV_DB_SCALE_ITEM(-750, 150, 0),
1286 );
1287
1288 static const DECLARE_TLV_DB_SCALE(db_scale_capture, 0, 150, 0);
1289
1290 static const struct snd_kcontrol_new snd_es1938_controls[] = {
1291 ES1938_DOUBLE_TLV("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0,
1292                   db_scale_master),
1293 ES1938_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1294 {
1295         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1296         .name = "Hardware Master Playback Volume",
1297         .access = SNDRV_CTL_ELEM_ACCESS_READ,
1298         .info = snd_es1938_info_hw_volume,
1299         .get = snd_es1938_get_hw_volume,
1300 },
1301 {
1302         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1303         .access = (SNDRV_CTL_ELEM_ACCESS_READ |
1304                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1305         .name = "Hardware Master Playback Switch",
1306         .info = snd_es1938_info_hw_switch,
1307         .get = snd_es1938_get_hw_switch,
1308         .tlv = { .p = db_scale_master },
1309 },
1310 ES1938_SINGLE("Hardware Volume Split", 0, 0x64, 7, 1, 0),
1311 ES1938_DOUBLE_TLV("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0,
1312                   db_scale_line),
1313 ES1938_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1314 ES1938_DOUBLE_TLV("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0,
1315                   db_scale_mic),
1316 ES1938_DOUBLE_TLV("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1317                   db_scale_line),
1318 ES1938_DOUBLE_TLV("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0,
1319                   db_scale_mic),
1320 ES1938_DOUBLE_TLV("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0,
1321                   db_scale_line),
1322 ES1938_DOUBLE_TLV("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0,
1323                   db_scale_capture),
1324 ES1938_SINGLE("Beep Volume", 0, 0x3c, 0, 7, 0),
1325 ES1938_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1326 ES1938_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1327 {
1328         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1329         .name = "Capture Source",
1330         .info = snd_es1938_info_mux,
1331         .get = snd_es1938_get_mux,
1332         .put = snd_es1938_put_mux,
1333 },
1334 ES1938_DOUBLE_TLV("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1335                   db_scale_line),
1336 ES1938_DOUBLE_TLV("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0,
1337                   db_scale_audio2),
1338 ES1938_DOUBLE_TLV("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0,
1339                   db_scale_mic),
1340 ES1938_DOUBLE_TLV("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0,
1341                   db_scale_line),
1342 ES1938_DOUBLE_TLV("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0,
1343                   db_scale_mic),
1344 ES1938_DOUBLE_TLV("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0,
1345                   db_scale_line),
1346 ES1938_DOUBLE_TLV("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0,
1347                   db_scale_line),
1348 ES1938_DOUBLE_TLV("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0,
1349                   db_scale_line),
1350 ES1938_DOUBLE_TLV("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0,
1351                   db_scale_audio2),
1352 ES1938_DOUBLE_TLV("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0,
1353                   db_scale_audio1),
1354 ES1938_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1355 {
1356         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1357         .name = "3D Control - Switch",
1358         .info = snd_es1938_info_spatializer_enable,
1359         .get = snd_es1938_get_spatializer_enable,
1360         .put = snd_es1938_put_spatializer_enable,
1361 },
1362 ES1938_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0)
1363 };
1364
1365
1366 /* ---------------------------------------------------------------------------- */
1367 /* ---------------------------------------------------------------------------- */
1368
1369 /*
1370  * initialize the chip - used by resume callback, too
1371  */
1372 static void snd_es1938_chip_init(struct es1938 *chip)
1373 {
1374         /* reset chip */
1375         snd_es1938_reset(chip);
1376
1377         /* configure native mode */
1378
1379         /* enable bus master */
1380         pci_set_master(chip->pci);
1381
1382         /* disable legacy audio */
1383         pci_write_config_word(chip->pci, SL_PCI_LEGACYCONTROL, 0x805f);
1384
1385         /* set DDMA base */
1386         pci_write_config_word(chip->pci, SL_PCI_DDMACONTROL, chip->ddma_port | 1);
1387
1388         /* set DMA/IRQ policy */
1389         pci_write_config_dword(chip->pci, SL_PCI_CONFIG, 0);
1390
1391         /* enable Audio 1, Audio 2, MPU401 IRQ and HW volume IRQ*/
1392         outb(0xf0, SLIO_REG(chip, IRQCONTROL));
1393
1394         /* reset DMA */
1395         outb(0, SLDM_REG(chip, DMACLEAR));
1396 }
1397
1398 #ifdef CONFIG_PM_SLEEP
1399 /*
1400  * PM support
1401  */
1402
1403 static const unsigned char saved_regs[SAVED_REG_SIZE+1] = {
1404         0x14, 0x1a, 0x1c, 0x3a, 0x3c, 0x3e, 0x36, 0x38,
1405         0x50, 0x52, 0x60, 0x61, 0x62, 0x63, 0x64, 0x68,
1406         0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x7c, 0x7d,
1407         0xa8, 0xb4,
1408 };
1409
1410
1411 static int es1938_suspend(struct device *dev)
1412 {
1413         struct snd_card *card = dev_get_drvdata(dev);
1414         struct es1938 *chip = card->private_data;
1415         const unsigned char *s;
1416         unsigned char *d;
1417
1418         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1419
1420         /* save mixer-related registers */
1421         for (s = saved_regs, d = chip->saved_regs; *s; s++, d++)
1422                 *d = snd_es1938_reg_read(chip, *s);
1423
1424         outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
1425         if (chip->irq >= 0) {
1426                 free_irq(chip->irq, chip);
1427                 chip->irq = -1;
1428                 card->sync_irq = -1;
1429         }
1430         return 0;
1431 }
1432
1433 static int es1938_resume(struct device *dev)
1434 {
1435         struct pci_dev *pci = to_pci_dev(dev);
1436         struct snd_card *card = dev_get_drvdata(dev);
1437         struct es1938 *chip = card->private_data;
1438         const unsigned char *s;
1439         unsigned char *d;
1440
1441         if (request_irq(pci->irq, snd_es1938_interrupt,
1442                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
1443                 dev_err(dev, "unable to grab IRQ %d, disabling device\n",
1444                         pci->irq);
1445                 snd_card_disconnect(card);
1446                 return -EIO;
1447         }
1448         chip->irq = pci->irq;
1449         card->sync_irq = chip->irq;
1450         snd_es1938_chip_init(chip);
1451
1452         /* restore mixer-related registers */
1453         for (s = saved_regs, d = chip->saved_regs; *s; s++, d++) {
1454                 if (*s < 0xa0)
1455                         snd_es1938_mixer_write(chip, *s, *d);
1456                 else
1457                         snd_es1938_write(chip, *s, *d);
1458         }
1459
1460         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1461         return 0;
1462 }
1463
1464 static SIMPLE_DEV_PM_OPS(es1938_pm, es1938_suspend, es1938_resume);
1465 #define ES1938_PM_OPS   &es1938_pm
1466 #else
1467 #define ES1938_PM_OPS   NULL
1468 #endif /* CONFIG_PM_SLEEP */
1469
1470 #ifdef SUPPORT_JOYSTICK
1471 static int snd_es1938_create_gameport(struct es1938 *chip)
1472 {
1473         struct gameport *gp;
1474
1475         chip->gameport = gp = gameport_allocate_port();
1476         if (!gp) {
1477                 dev_err(chip->card->dev,
1478                         "cannot allocate memory for gameport\n");
1479                 return -ENOMEM;
1480         }
1481
1482         gameport_set_name(gp, "ES1938");
1483         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1484         gameport_set_dev_parent(gp, &chip->pci->dev);
1485         gp->io = chip->game_port;
1486
1487         gameport_register_port(gp);
1488
1489         return 0;
1490 }
1491
1492 static void snd_es1938_free_gameport(struct es1938 *chip)
1493 {
1494         if (chip->gameport) {
1495                 gameport_unregister_port(chip->gameport);
1496                 chip->gameport = NULL;
1497         }
1498 }
1499 #else
1500 static inline int snd_es1938_create_gameport(struct es1938 *chip) { return -ENOSYS; }
1501 static inline void snd_es1938_free_gameport(struct es1938 *chip) { }
1502 #endif /* SUPPORT_JOYSTICK */
1503
1504 static void snd_es1938_free(struct snd_card *card)
1505 {
1506         struct es1938 *chip = card->private_data;
1507
1508         /* disable irqs */
1509         outb(0x00, SLIO_REG(chip, IRQCONTROL));
1510         if (chip->rmidi)
1511                 snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
1512
1513         snd_es1938_free_gameport(chip);
1514
1515         if (chip->irq >= 0)
1516                 free_irq(chip->irq, chip);
1517 }
1518
1519 static int snd_es1938_create(struct snd_card *card,
1520                              struct pci_dev *pci)
1521 {
1522         struct es1938 *chip = card->private_data;
1523         int err;
1524
1525         /* enable PCI device */
1526         err = pcim_enable_device(pci);
1527         if (err < 0)
1528                 return err;
1529         /* check, if we can restrict PCI DMA transfers to 24 bits */
1530         if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(24))) {
1531                 dev_err(card->dev,
1532                         "architecture does not support 24bit PCI busmaster DMA\n");
1533                 return -ENXIO;
1534         }
1535
1536         spin_lock_init(&chip->reg_lock);
1537         spin_lock_init(&chip->mixer_lock);
1538         chip->card = card;
1539         chip->pci = pci;
1540         chip->irq = -1;
1541         err = pci_request_regions(pci, "ESS Solo-1");
1542         if (err < 0)
1543                 return err;
1544         chip->io_port = pci_resource_start(pci, 0);
1545         chip->sb_port = pci_resource_start(pci, 1);
1546         chip->vc_port = pci_resource_start(pci, 2);
1547         chip->mpu_port = pci_resource_start(pci, 3);
1548         chip->game_port = pci_resource_start(pci, 4);
1549         /* still use non-managed irq handler as it's re-acquired at PM resume */
1550         if (request_irq(pci->irq, snd_es1938_interrupt, IRQF_SHARED,
1551                         KBUILD_MODNAME, chip)) {
1552                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1553                 return -EBUSY;
1554         }
1555         chip->irq = pci->irq;
1556         card->sync_irq = chip->irq;
1557         card->private_free = snd_es1938_free;
1558         dev_dbg(card->dev,
1559                 "create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
1560                    chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);
1561
1562         chip->ddma_port = chip->vc_port + 0x00;         /* fix from Thomas Sailer */
1563
1564         snd_es1938_chip_init(chip);
1565         return 0;
1566 }
1567
1568 /* --------------------------------------------------------------------
1569  * Interrupt handler
1570  * -------------------------------------------------------------------- */
1571 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id)
1572 {
1573         struct es1938 *chip = dev_id;
1574         unsigned char status;
1575         __always_unused unsigned char audiostatus;
1576         int handled = 0;
1577
1578         status = inb(SLIO_REG(chip, IRQCONTROL));
1579 #if 0
1580         dev_dbg(chip->card->dev,
1581                 "Es1938debug - interrupt status: =0x%x\n", status);
1582 #endif
1583
1584         /* AUDIO 1 */
1585         if (status & 0x10) {
1586 #if 0
1587                 dev_dbg(chip->card->dev,
1588                        "Es1938debug - AUDIO channel 1 interrupt\n");
1589                 dev_dbg(chip->card->dev,
1590                        "Es1938debug - AUDIO channel 1 DMAC DMA count: %u\n",
1591                        inw(SLDM_REG(chip, DMACOUNT)));
1592                 dev_dbg(chip->card->dev,
1593                        "Es1938debug - AUDIO channel 1 DMAC DMA base: %u\n",
1594                        inl(SLDM_REG(chip, DMAADDR)));
1595                 dev_dbg(chip->card->dev,
1596                        "Es1938debug - AUDIO channel 1 DMAC DMA status: 0x%x\n",
1597                        inl(SLDM_REG(chip, DMASTATUS)));
1598 #endif
1599                 /* clear irq */
1600                 handled = 1;
1601                 audiostatus = inb(SLSB_REG(chip, STATUS));
1602                 if (chip->active & ADC1)
1603                         snd_pcm_period_elapsed(chip->capture_substream);
1604                 else if (chip->active & DAC1)
1605                         snd_pcm_period_elapsed(chip->playback2_substream);
1606         }
1607
1608         /* AUDIO 2 */
1609         if (status & 0x20) {
1610 #if 0
1611                 dev_dbg(chip->card->dev,
1612                        "Es1938debug - AUDIO channel 2 interrupt\n");
1613                 dev_dbg(chip->card->dev,
1614                        "Es1938debug - AUDIO channel 2 DMAC DMA count: %u\n",
1615                        inw(SLIO_REG(chip, AUDIO2DMACOUNT)));
1616                 dev_dbg(chip->card->dev,
1617                        "Es1938debug - AUDIO channel 2 DMAC DMA base: %u\n",
1618                        inl(SLIO_REG(chip, AUDIO2DMAADDR)));
1619
1620 #endif
1621                 /* clear irq */
1622                 handled = 1;
1623                 snd_es1938_mixer_bits(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x80, 0);
1624                 if (chip->active & DAC2)
1625                         snd_pcm_period_elapsed(chip->playback1_substream);
1626         }
1627
1628         /* Hardware volume */
1629         if (status & 0x40) {
1630                 int split = snd_es1938_mixer_read(chip, 0x64) & 0x80;
1631                 handled = 1;
1632                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
1633                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
1634                 if (!split) {
1635                         snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1636                                        &chip->master_switch->id);
1637                         snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1638                                        &chip->master_volume->id);
1639                 }
1640                 /* ack interrupt */
1641                 snd_es1938_mixer_write(chip, 0x66, 0x00);
1642         }
1643
1644         /* MPU401 */
1645         if (status & 0x80) {
1646                 // the following line is evil! It switches off MIDI interrupt handling after the first interrupt received.
1647                 // replacing the last 0 by 0x40 works for ESS-Solo1, but just doing nothing works as well!
1648                 // andreas@flying-snail.de
1649                 // snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
1650                 if (chip->rmidi) {
1651                         handled = 1;
1652                         snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1653                 }
1654         }
1655         return IRQ_RETVAL(handled);
1656 }
1657
1658 #define ES1938_DMA_SIZE 64
1659
1660 static int snd_es1938_mixer(struct es1938 *chip)
1661 {
1662         struct snd_card *card;
1663         unsigned int idx;
1664         int err;
1665
1666         card = chip->card;
1667
1668         strcpy(card->mixername, "ESS Solo-1");
1669
1670         for (idx = 0; idx < ARRAY_SIZE(snd_es1938_controls); idx++) {
1671                 struct snd_kcontrol *kctl;
1672                 kctl = snd_ctl_new1(&snd_es1938_controls[idx], chip);
1673                 switch (idx) {
1674                         case 0:
1675                                 chip->master_volume = kctl;
1676                                 kctl->private_free = snd_es1938_hwv_free;
1677                                 break;
1678                         case 1:
1679                                 chip->master_switch = kctl;
1680                                 kctl->private_free = snd_es1938_hwv_free;
1681                                 break;
1682                         case 2:
1683                                 chip->hw_volume = kctl;
1684                                 kctl->private_free = snd_es1938_hwv_free;
1685                                 break;
1686                         case 3:
1687                                 chip->hw_switch = kctl;
1688                                 kctl->private_free = snd_es1938_hwv_free;
1689                                 break;
1690                         }
1691                 err = snd_ctl_add(card, kctl);
1692                 if (err < 0)
1693                         return err;
1694         }
1695         return 0;
1696 }
1697
1698
1699 static int __snd_es1938_probe(struct pci_dev *pci,
1700                               const struct pci_device_id *pci_id)
1701 {
1702         static int dev;
1703         struct snd_card *card;
1704         struct es1938 *chip;
1705         struct snd_opl3 *opl3;
1706         int idx, err;
1707
1708         if (dev >= SNDRV_CARDS)
1709                 return -ENODEV;
1710         if (!enable[dev]) {
1711                 dev++;
1712                 return -ENOENT;
1713         }
1714
1715         err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1716                                 sizeof(*chip), &card);
1717         if (err < 0)
1718                 return err;
1719         chip = card->private_data;
1720
1721         for (idx = 0; idx < 5; idx++)
1722                 if (pci_resource_start(pci, idx) == 0 ||
1723                     !(pci_resource_flags(pci, idx) & IORESOURCE_IO))
1724                         return -ENODEV;
1725
1726         err = snd_es1938_create(card, pci);
1727         if (err < 0)
1728                 return err;
1729
1730         strcpy(card->driver, "ES1938");
1731         strcpy(card->shortname, "ESS ES1938 (Solo-1)");
1732         sprintf(card->longname, "%s rev %i, irq %i",
1733                 card->shortname,
1734                 chip->revision,
1735                 chip->irq);
1736
1737         err = snd_es1938_new_pcm(chip, 0);
1738         if (err < 0)
1739                 return err;
1740         err = snd_es1938_mixer(chip);
1741         if (err < 0)
1742                 return err;
1743         if (snd_opl3_create(card,
1744                             SLSB_REG(chip, FMLOWADDR),
1745                             SLSB_REG(chip, FMHIGHADDR),
1746                             OPL3_HW_OPL3, 1, &opl3) < 0) {
1747                 dev_err(card->dev, "OPL3 not detected at 0x%lx\n",
1748                            SLSB_REG(chip, FMLOWADDR));
1749         } else {
1750                 err = snd_opl3_timer_new(opl3, 0, 1);
1751                 if (err < 0)
1752                         return err;
1753                 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
1754                 if (err < 0)
1755                         return err;
1756         }
1757         if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
1758                                 chip->mpu_port,
1759                                 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
1760                                 -1, &chip->rmidi) < 0) {
1761                 dev_err(card->dev, "unable to initialize MPU-401\n");
1762         } else {
1763                 // this line is vital for MIDI interrupt handling on ess-solo1
1764                 // andreas@flying-snail.de
1765                 snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
1766         }
1767
1768         snd_es1938_create_gameport(chip);
1769
1770         err = snd_card_register(card);
1771         if (err < 0)
1772                 return err;
1773
1774         pci_set_drvdata(pci, card);
1775         dev++;
1776         return 0;
1777 }
1778
1779 static int snd_es1938_probe(struct pci_dev *pci,
1780                             const struct pci_device_id *pci_id)
1781 {
1782         return snd_card_free_on_error(&pci->dev, __snd_es1938_probe(pci, pci_id));
1783 }
1784
1785 static struct pci_driver es1938_driver = {
1786         .name = KBUILD_MODNAME,
1787         .id_table = snd_es1938_ids,
1788         .probe = snd_es1938_probe,
1789         .driver = {
1790                 .pm = ES1938_PM_OPS,
1791         },
1792 };
1793
1794 module_pci_driver(es1938_driver);