sound/pci/azt3328.c

   1 /*
   2  *  azt3328.c - driver for Aztech AZF3328 based soundcards (e.g. PCI168).
   3  *  Copyright (C) 2002, 2005 by Andreas Mohr <andi AT lisas.de>
   4  *
   5  *  Framework borrowed from Bart Hartgers's als4000.c.
   6  *  Driver developed on PCI168 AP(W) version (PCI rev. 10, subsystem ID 1801),
   7  *  found in a Fujitsu-Siemens PC ("Cordant", aluminum case).
   8  *  Other versions are:
   9  *  PCI168 A(W), sub ID 1800
  10  *  PCI168 A/AP, sub ID 8000
  11  *  Please give me feedback in case you try my driver with one of these!!
  12  *
  13  * GPL LICENSE
  14  *  This program is free software; you can redistribute it and/or modify
  15  *  it under the terms of the GNU General Public License as published by
  16  *  the Free Software Foundation; either version 2 of the License, or
  17  *  (at your option) any later version.
  18  *
  19  *  This program is distributed in the hope that it will be useful,
  20  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *  GNU General Public License for more details.
  23
  24  *  You should have received a copy of the GNU General Public License
  25  *  along with this program; if not, write to the Free Software
  26  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  27  *
  28  * NOTES
  29  *  Since Aztech does not provide any chipset documentation,
  30  *  even on repeated request to various addresses,
  31  *  and the answer that was finally given was negative
  32  *  (and I was stupid enough to manage to get hold of a PCI168 soundcard
  33  *  in the first place >:-P}),
  34  *  I was forced to base this driver on reverse engineering
  35  *  (3 weeks' worth of evenings filled with driver work).
  36  *  (and no, I did NOT go the easy way: to pick up a PCI128 for 9 Euros)
  37  *
  38  *  The AZF3328 chip (note: AZF3328, *not* AZT3328, that's just the driver name
  39  *  for compatibility reasons) has the following features:
  40  *
  41  *  - builtin AC97 conformant codec (SNR over 80dB)
  42  *    (really AC97 compliant?? I really doubt it when looking
  43  *    at the mixer register layout)
  44  *  - builtin genuine OPL3
  45  *  - full duplex 16bit playback/record at independent sampling rate
  46  *  - MPU401 (+ legacy address support) FIXME: how to enable legacy addr??
  47  *  - game port (legacy address support)
  48  *  - built-in General DirectX timer having a 20 bits counter
  49  *    with 1us resolution (see below!)
  50  *  - I2S serial port for external DAC
  51  *  - supports 33MHz PCI spec 2.1, PCI power management 1.0, compliant with ACPI
  52  *  - supports hardware volume control
  53  *  - single chip low cost solution (128 pin QFP)
  54  *  - supports programmable Sub-vendor and Sub-system ID
  55  *    required for Microsoft's logo compliance (FIXME: where?)
  56  *  - PCI168 AP(W) card: power amplifier with 4 Watts/channel at 4 Ohms
  57  *
  58  *  Note that this driver now is actually *better* than the Windows driver,
  59  *  since it additionally supports the card's 1MHz DirectX timer - just try
  60  *  the following snd-seq module parameters etc.:
  61  *  - options snd-seq seq_default_timer_class=2 seq_default_timer_sclass=0
  62  *    seq_default_timer_card=0 seq_client_load=1 seq_default_timer_device=0
  63  *    seq_default_timer_subdevice=0 seq_default_timer_resolution=1000000
  64  *  - "timidity -iAv -B2,8 -Os -EFreverb=0"
  65  *  - "pmidi -p 128:0 jazz.mid"
  66  *
  67  *  Certain PCI versions of this card are susceptible to DMA traffic underruns
  68  *  in some systems (resulting in sound crackling/clicking/popping),
  69  *  probably because they don't have a DMA FIFO buffer or so.
  70  *  Overview (PCI ID/PCI subID/PCI rev.):
  71  *  - no DMA crackling on SiS735: 0x50DC/0x1801/16
  72  *  - unknown performance: 0x50DC/0x1801/10
  73  *    (well, it's not bad on an Athlon 1800 with now very optimized IRQ handler)
  74  *
  75  *  Crackling happens with VIA chipsets or, in my case, an SiS735, which is
  76  *  supposed to be very fast and supposed to get rid of crackling much
  77  *  better than a VIA, yet ironically I still get crackling, like many other
  78  *  people with the same chipset.
  79  *  Possible remedies:
  80  *  - plug card into a different PCI slot, preferrably one that isn't shared
  81  *    too much (this helps a lot, but not completely!)
  82  *  - get rid of PCI VGA card, use AGP instead
  83  *  - upgrade or downgrade BIOS
  84  *  - fiddle with PCI latency settings (setpci -v -s BUSID latency_timer=XX)
  85  *    Not too helpful.
  86  *  - Disable ACPI/power management/"Auto Detect RAM/PCI Clk" in BIOS
  87  *
  88  * BUGS
  89  *  - full-duplex might *still* be problematic, not fully tested recently
  90  *
  91  * TODO
  92  *  - test MPU401 MIDI playback etc.
  93  *  - power management. See e.g. intel8x0 or cs4281.
  94  *    This would be nice since the chip runs a bit hot, and it's *required*
  95  *    anyway for proper ACPI power management.
  96  *  - figure out what all unknown port bits are responsible for
  97  */
  98
  99 #include <sound/driver.h>
 100 #include <asm/io.h>
 101 #include <linux/init.h>
 102 #include <linux/pci.h>
 103 #include <linux/delay.h>
 104 #include <linux/slab.h>
 105 #include <linux/gameport.h>
 106 #include <linux/moduleparam.h>
 107 #include <linux/dma-mapping.h>
 108 #include <sound/core.h>
 109 #include <sound/control.h>
 110 #include <sound/pcm.h>
 111 #include <sound/rawmidi.h>
 112 #include <sound/mpu401.h>
 113 #include <sound/opl3.h>
 114 #include <sound/initval.h>
 115 #include "azt3328.h"
 116
 117 MODULE_AUTHOR("Andreas Mohr <andi AT lisas.de>");
 118 MODULE_DESCRIPTION("Aztech AZF3328 (PCI168)");
 119 MODULE_LICENSE("GPL");
 120 MODULE_SUPPORTED_DEVICE("{{Aztech,AZF3328}}");
 121
 122 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
 123 #define SUPPORT_JOYSTICK 1
 124 #endif
 125
 126 #define DEBUG_MISC      0
 127 #define DEBUG_CALLS     0
 128 #define DEBUG_MIXER     0
 129 #define DEBUG_PLAY_REC  0
 130 #define DEBUG_IO        0
 131 #define DEBUG_TIMER     0
 132 #define MIXER_TESTING   0
 133
 134 #if DEBUG_MISC
 135 #define snd_azf3328_dbgmisc(format, args...) printk(KERN_ERR format, ##args)
 136 #else
 137 #define snd_azf3328_dbgmisc(format, args...)
 138 #endif
 139
 140 #if DEBUG_CALLS
 141 #define snd_azf3328_dbgcalls(format, args...) printk(format, ##args)
 142 #define snd_azf3328_dbgcallenter() printk(KERN_ERR "--> %s\n", __FUNCTION__)
 143 #define snd_azf3328_dbgcallleave() printk(KERN_ERR "<-- %s\n", __FUNCTION__)
 144 #else
 145 #define snd_azf3328_dbgcalls(format, args...)
 146 #define snd_azf3328_dbgcallenter()
 147 #define snd_azf3328_dbgcallleave()
 148 #endif
 149
 150 #if DEBUG_MIXER
 151 #define snd_azf3328_dbgmixer(format, args...) printk(format, ##args)
 152 #else
 153 #define snd_azf3328_dbgmixer(format, args...)
 154 #endif
 155
 156 #if DEBUG_PLAY_REC
 157 #define snd_azf3328_dbgplay(format, args...) printk(KERN_ERR format, ##args)
 158 #else
 159 #define snd_azf3328_dbgplay(format, args...)
 160 #endif
 161
 162 #if DEBUG_MISC
 163 #define snd_azf3328_dbgtimer(format, args...) printk(KERN_ERR format, ##args)
 164 #else
 165 #define snd_azf3328_dbgtimer(format, args...)
 166 #endif
 167
 168 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 169 module_param_array(index, int, NULL, 0444);
 170 MODULE_PARM_DESC(index, "Index value for AZF3328 soundcard.");
 171
 172 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 173 module_param_array(id, charp, NULL, 0444);
 174 MODULE_PARM_DESC(id, "ID string for AZF3328 soundcard.");
 175
 176 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
 177 module_param_array(enable, bool, NULL, 0444);
 178 MODULE_PARM_DESC(enable, "Enable AZF3328 soundcard.");
 179
 180 #ifdef SUPPORT_JOYSTICK
 181 static int joystick[SNDRV_CARDS];
 182 module_param_array(joystick, bool, NULL, 0444);
 183 MODULE_PARM_DESC(joystick, "Enable joystick for AZF3328 soundcard.");
 184 #endif
 185
 186 static int seqtimer_scaling = 128;
 187 module_param(seqtimer_scaling, int, 0444);
 188 MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (lockup danger!). Default 128.");
 189
 190 struct snd_azf3328 {
 191         /* often-used fields towards beginning, then grouped */
 192         unsigned long codec_port;
 193         unsigned long io2_port;
 194         unsigned long mpu_port;
 195         unsigned long synth_port;
 196         unsigned long mixer_port;
 197
 198         spinlock_t reg_lock;
 199
 200         struct snd_timer *timer;
 201
 202         struct snd_pcm *pcm;
 203         struct snd_pcm_substream *playback_substream;
 204         struct snd_pcm_substream *capture_substream;
 205         unsigned int is_playing;
 206         unsigned int is_recording;
 207
 208         struct snd_card *card;
 209         struct snd_rawmidi *rmidi;
 210
 211 #ifdef SUPPORT_JOYSTICK
 212         struct gameport *gameport;
 213 #endif
 214
 215         struct pci_dev *pci;
 216         int irq;
 217 };
 218
 219 static const struct pci_device_id snd_azf3328_ids[] __devinitdata = {
 220         { 0x122D, 0x50DC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* PCI168/3328 */
 221         { 0x122D, 0x80DA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* 3328 */
 222         { 0, }
 223 };
 224
 225 MODULE_DEVICE_TABLE(pci, snd_azf3328_ids);
 226
 227 static inline void
 228 snd_azf3328_codec_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 229 {
 230         outb(value, chip->codec_port + reg);
 231 }
 232
 233 static inline u8
 234 snd_azf3328_codec_inb(const struct snd_azf3328 *chip, int reg)
 235 {
 236         return inb(chip->codec_port + reg);
 237 }
 238
 239 static inline void
 240 snd_azf3328_codec_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 241 {
 242         outw(value, chip->codec_port + reg);
 243 }
 244
 245 static inline u16
 246 snd_azf3328_codec_inw(const struct snd_azf3328 *chip, int reg)
 247 {
 248         return inw(chip->codec_port + reg);
 249 }
 250
 251 static inline void
 252 snd_azf3328_codec_outl(const struct snd_azf3328 *chip, int reg, u32 value)
 253 {
 254         outl(value, chip->codec_port + reg);
 255 }
 256
 257 static inline void
 258 snd_azf3328_io2_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 259 {
 260         outb(value, chip->io2_port + reg);
 261 }
 262
 263 static inline u8
 264 snd_azf3328_io2_inb(const struct snd_azf3328 *chip, int reg)
 265 {
 266         return inb(chip->io2_port + reg);
 267 }
 268
 269 static inline void
 270 snd_azf3328_mixer_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 271 {
 272         outw(value, chip->mixer_port + reg);
 273 }
 274
 275 static inline u16
 276 snd_azf3328_mixer_inw(const struct snd_azf3328 *chip, int reg)
 277 {
 278         return inw(chip->mixer_port + reg);
 279 }
 280
 281 static void
 282 snd_azf3328_mixer_set_mute(const struct snd_azf3328 *chip, int reg, int do_mute)
 283 {
 284         unsigned long portbase = chip->mixer_port + reg + 1;
 285         unsigned char oldval;
 286
 287         /* the mute bit is on the *second* (i.e. right) register of a
 288          * left/right channel setting */
 289         oldval = inb(portbase);
 290         if (do_mute)
 291                 oldval |= 0x80;
 292         else
 293                 oldval &= ~0x80;
 294         outb(oldval, portbase);
 295 }
 296
 297 static void
 298 snd_azf3328_mixer_write_volume_gradually(const struct snd_azf3328 *chip, int reg, unsigned char dst_vol_left, unsigned char dst_vol_right, int chan_sel, int delay)
 299 {
 300         unsigned long portbase = chip->mixer_port + reg;
 301         unsigned char curr_vol_left = 0, curr_vol_right = 0;
 302         int left_done = 0, right_done = 0;
 303
 304         snd_azf3328_dbgcallenter();
 305         if (chan_sel & SET_CHAN_LEFT)
 306                 curr_vol_left  = inb(portbase + 1);
 307         else
 308                 left_done = 1;
 309         if (chan_sel & SET_CHAN_RIGHT)
 310                 curr_vol_right = inb(portbase + 0);
 311         else
 312                 right_done = 1;
 313
 314         /* take care of muting flag (0x80) contained in left channel */
 315         if (curr_vol_left & 0x80)
 316                 dst_vol_left |= 0x80;
 317         else
 318                 dst_vol_left &= ~0x80;
 319
 320         do
 321         {
 322                 if (!left_done)
 323                 {
 324                         if (curr_vol_left > dst_vol_left)
 325                                 curr_vol_left--;
 326                         else
 327                         if (curr_vol_left < dst_vol_left)
 328                                 curr_vol_left++;
 329                         else
 330                             left_done = 1;
 331                         outb(curr_vol_left, portbase + 1);
 332                 }
 333                 if (!right_done)
 334                 {
 335                         if (curr_vol_right > dst_vol_right)
 336                                 curr_vol_right--;
 337                         else
 338                         if (curr_vol_right < dst_vol_right)
 339                                 curr_vol_right++;
 340                         else
 341                             right_done = 1;
 342                         /* during volume change, the right channel is crackling
 343                          * somewhat more than the left channel, unfortunately.
 344                          * This seems to be a hardware issue. */
 345                         outb(curr_vol_right, portbase + 0);
 346                 }
 347                 if (delay)
 348                         mdelay(delay);
 349         }
 350         while ((!left_done) || (!right_done));
 351         snd_azf3328_dbgcallleave();
 352 }
 353
 354 /*
 355  * general mixer element
 356  */
 357 struct azf3328_mixer_reg {
 358         unsigned int reg;
 359         unsigned int lchan_shift, rchan_shift;
 360         unsigned int mask;
 361         unsigned int invert: 1;
 362         unsigned int stereo: 1;
 363         unsigned int enum_c: 4;
 364 };
 365
 366 #define COMPOSE_MIXER_REG(reg,lchan_shift,rchan_shift,mask,invert,stereo,enum_c) \
 367  ((reg) | (lchan_shift << 8) | (rchan_shift << 12) | \
 368   (mask << 16) | \
 369   (invert << 24) | \
 370   (stereo << 25) | \
 371   (enum_c << 26))
 372
 373 static void snd_azf3328_mixer_reg_decode(struct azf3328_mixer_reg *r, unsigned long val)
 374 {
 375         r->reg = val & 0xff;
 376         r->lchan_shift = (val >> 8) & 0x0f;
 377         r->rchan_shift = (val >> 12) & 0x0f;
 378         r->mask = (val >> 16) & 0xff;
 379         r->invert = (val >> 24) & 1;
 380         r->stereo = (val >> 25) & 1;
 381         r->enum_c = (val >> 26) & 0x0f;
 382 }
 383
 384 /*
 385  * mixer switches/volumes
 386  */
 387
 388 #define AZF3328_MIXER_SWITCH(xname, reg, shift, invert) \
 389 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 390   .info = snd_azf3328_info_mixer, \
 391   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 392   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0x1, invert, 0, 0), \
 393 }
 394
 395 #define AZF3328_MIXER_VOL_STEREO(xname, reg, mask, invert) \
 396 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 397   .info = snd_azf3328_info_mixer, \
 398   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 399   .private_value = COMPOSE_MIXER_REG(reg, 8, 0, mask, invert, 1, 0), \
 400 }
 401
 402 #define AZF3328_MIXER_VOL_MONO(xname, reg, mask, is_right_chan) \
 403 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 404   .info = snd_azf3328_info_mixer, \
 405   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 406   .private_value = COMPOSE_MIXER_REG(reg, is_right_chan ? 0 : 8, 0, mask, 1, 0, 0), \
 407 }
 408
 409 #define AZF3328_MIXER_VOL_SPECIAL(xname, reg, mask, shift, invert) \
 410 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 411   .info = snd_azf3328_info_mixer, \
 412   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 413   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, mask, invert, 0, 0), \
 414 }
 415
 416 #define AZF3328_MIXER_ENUM(xname, reg, enum_c, shift) \
 417 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 418   .info = snd_azf3328_info_mixer_enum, \
 419   .get = snd_azf3328_get_mixer_enum, .put = snd_azf3328_put_mixer_enum, \
 420   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0, 0, 0, enum_c), \
 421 }
 422
 423 static int
 424 snd_azf3328_info_mixer(struct snd_kcontrol *kcontrol,
 425                        struct snd_ctl_elem_info *uinfo)
 426 {
 427         struct azf3328_mixer_reg reg;
 428
 429         snd_azf3328_dbgcallenter();
 430         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 431         uinfo->type = reg.mask == 1 ?
 432                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 433         uinfo->count = reg.stereo + 1;
 434         uinfo->value.integer.min = 0;
 435         uinfo->value.integer.max = reg.mask;
 436         snd_azf3328_dbgcallleave();
 437         return 0;
 438 }
 439
 440 static int
 441 snd_azf3328_get_mixer(struct snd_kcontrol *kcontrol,
 442                       struct snd_ctl_elem_value *ucontrol)
 443 {
 444         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 445         struct azf3328_mixer_reg reg;
 446         unsigned int oreg, val;
 447
 448         snd_azf3328_dbgcallenter();
 449         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 450
 451         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 452         val = (oreg >> reg.lchan_shift) & reg.mask;
 453         if (reg.invert)
 454                 val = reg.mask - val;
 455         ucontrol->value.integer.value[0] = val;
 456         if (reg.stereo) {
 457                 val = (oreg >> reg.rchan_shift) & reg.mask;
 458                 if (reg.invert)
 459                         val = reg.mask - val;
 460                 ucontrol->value.integer.value[1] = val;
 461         }
 462         snd_azf3328_dbgmixer("get: %02x is %04x -> vol %02lx|%02lx "
 463                              "(shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
 464                 reg.reg, oreg,
 465                 ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 466                 reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
 467         snd_azf3328_dbgcallleave();
 468         return 0;
 469 }
 470
 471 static int
 472 snd_azf3328_put_mixer(struct snd_kcontrol *kcontrol,
 473                       struct snd_ctl_elem_value *ucontrol)
 474 {
 475         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 476         struct azf3328_mixer_reg reg;
 477         unsigned int oreg, nreg, val;
 478
 479         snd_azf3328_dbgcallenter();
 480         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 481         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 482         val = ucontrol->value.integer.value[0] & reg.mask;
 483         if (reg.invert)
 484                 val = reg.mask - val;
 485         nreg = oreg & ~(reg.mask << reg.lchan_shift);
 486         nreg |= (val << reg.lchan_shift);
 487         if (reg.stereo) {
 488                 val = ucontrol->value.integer.value[1] & reg.mask;
 489                 if (reg.invert)
 490                         val = reg.mask - val;
 491                 nreg &= ~(reg.mask << reg.rchan_shift);
 492                 nreg |= (val << reg.rchan_shift);
 493         }
 494         if (reg.mask >= 0x07) /* it's a volume control, so better take care */
 495                 snd_azf3328_mixer_write_volume_gradually(
 496                         chip, reg.reg, nreg >> 8, nreg & 0xff,
 497                         /* just set both channels, doesn't matter */
 498                         SET_CHAN_LEFT|SET_CHAN_RIGHT,
 499                         0);
 500         else
 501                 snd_azf3328_mixer_outw(chip, reg.reg, nreg);
 502
 503         snd_azf3328_dbgmixer("put: %02x to %02lx|%02lx, "
 504                              "oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
 505                 reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 506                 oreg, reg.lchan_shift, reg.rchan_shift,
 507                 nreg, snd_azf3328_mixer_inw(chip, reg.reg));
 508         snd_azf3328_dbgcallleave();
 509         return (nreg != oreg);
 510 }
 511
 512 static int
 513 snd_azf3328_info_mixer_enum(struct snd_kcontrol *kcontrol,
 514                             struct snd_ctl_elem_info *uinfo)
 515 {
 516         static const char * const texts1[] = {
 517                 "ModemOut1", "ModemOut2"
 518         };
 519         static const char * const texts2[] = {
 520                 "MonoSelectSource1", "MonoSelectSource2"
 521         };
 522         static const char * const texts3[] = {
 523                 "Mic", "CD", "Video", "Aux",
 524                 "Line", "Mix", "Mix Mono", "Phone"
 525         };
 526         struct azf3328_mixer_reg reg;
 527
 528         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 529         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 530         uinfo->count = (reg.reg == IDX_MIXER_REC_SELECT) ? 2 : 1;
 531         uinfo->value.enumerated.items = reg.enum_c;
 532         if (uinfo->value.enumerated.item > reg.enum_c - 1U)
 533                 uinfo->value.enumerated.item = reg.enum_c - 1U;
 534         if (reg.reg == IDX_MIXER_ADVCTL2)
 535         {
 536                 if (reg.lchan_shift == 8) /* modem out sel */
 537                         strcpy(uinfo->value.enumerated.name, texts1[uinfo->value.enumerated.item]);
 538                 else /* mono sel source */
 539                         strcpy(uinfo->value.enumerated.name, texts2[uinfo->value.enumerated.item]);
 540         }
 541         else
 542                 strcpy(uinfo->value.enumerated.name, texts3[uinfo->value.enumerated.item]
 543 );
 544         return 0;
 545 }
 546
 547 static int
 548 snd_azf3328_get_mixer_enum(struct snd_kcontrol *kcontrol,
 549                            struct snd_ctl_elem_value *ucontrol)
 550 {
 551         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 552         struct azf3328_mixer_reg reg;
 553         unsigned short val;
 554
 555         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 556         val = snd_azf3328_mixer_inw(chip, reg.reg);
 557         if (reg.reg == IDX_MIXER_REC_SELECT)
 558         {
 559                 ucontrol->value.enumerated.item[0] = (val >> 8) & (reg.enum_c - 1);
 560                 ucontrol->value.enumerated.item[1] = (val >> 0) & (reg.enum_c - 1);
 561         }
 562         else
 563                 ucontrol->value.enumerated.item[0] = (val >> reg.lchan_shift) & (reg.enum_c - 1);
 564
 565         snd_azf3328_dbgmixer("get_enum: %02x is %04x -> %d|%d (shift %02d, enum_c %d)\n",
 566                 reg.reg, val, ucontrol->value.enumerated.item[0], ucontrol->value.enumerated.item[1],
 567                 reg.lchan_shift, reg.enum_c);
 568         return 0;
 569 }
 570
 571 static int
 572 snd_azf3328_put_mixer_enum(struct snd_kcontrol *kcontrol,
 573                            struct snd_ctl_elem_value *ucontrol)
 574 {
 575         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 576         struct azf3328_mixer_reg reg;
 577         unsigned int oreg, nreg, val;
 578
 579         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 580         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 581         val = oreg;
 582         if (reg.reg == IDX_MIXER_REC_SELECT)
 583         {
 584                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U ||
 585                 ucontrol->value.enumerated.item[1] > reg.enum_c - 1U)
 586                         return -EINVAL;
 587                 val = (ucontrol->value.enumerated.item[0] << 8) |
 588                       (ucontrol->value.enumerated.item[1] << 0);
 589         }
 590         else
 591         {
 592                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U)
 593                         return -EINVAL;
 594                 val &= ~((reg.enum_c - 1) << reg.lchan_shift);
 595                 val |= (ucontrol->value.enumerated.item[0] << reg.lchan_shift);
 596         }
 597         snd_azf3328_mixer_outw(chip, reg.reg, val);
 598         nreg = val;
 599
 600         snd_azf3328_dbgmixer("put_enum: %02x to %04x, oreg %04x\n", reg.reg, val, oreg);
 601         return (nreg != oreg);
 602 }
 603
 604 static const struct snd_kcontrol_new snd_azf3328_mixer_controls[] __devinitdata = {
 605         AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
 606         AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
 607         AZF3328_MIXER_SWITCH("Wave Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),
 608         AZF3328_MIXER_VOL_STEREO("Wave Playback Volume", IDX_MIXER_WAVEOUT, 0x1f, 1),
 609         AZF3328_MIXER_SWITCH("Wave 3D Bypass Playback Switch", IDX_MIXER_ADVCTL2, 7, 1),
 610         AZF3328_MIXER_SWITCH("FM Playback Switch", IDX_MIXER_FMSYNTH, 15, 1),
 611         AZF3328_MIXER_VOL_STEREO("FM Playback Volume", IDX_MIXER_FMSYNTH, 0x1f, 1),
 612         AZF3328_MIXER_SWITCH("CD Playback Switch", IDX_MIXER_CDAUDIO, 15, 1),
 613         AZF3328_MIXER_VOL_STEREO("CD Playback Volume", IDX_MIXER_CDAUDIO, 0x1f, 1),
 614         AZF3328_MIXER_SWITCH("Capture Switch", IDX_MIXER_REC_VOLUME, 15, 1),
 615         AZF3328_MIXER_VOL_STEREO("Capture Volume", IDX_MIXER_REC_VOLUME, 0x0f, 0),
 616         AZF3328_MIXER_ENUM("Capture Source", IDX_MIXER_REC_SELECT, 8, 0),
 617         AZF3328_MIXER_SWITCH("Mic Playback Switch", IDX_MIXER_MIC, 15, 1),
 618         AZF3328_MIXER_VOL_MONO("Mic Playback Volume", IDX_MIXER_MIC, 0x1f, 1),
 619         AZF3328_MIXER_SWITCH("Mic Boost (+20dB)", IDX_MIXER_MIC, 6, 0),
 620         AZF3328_MIXER_SWITCH("Line Playback Switch", IDX_MIXER_LINEIN, 15, 1),
 621         AZF3328_MIXER_VOL_STEREO("Line Playback Volume", IDX_MIXER_LINEIN, 0x1f, 1),
 622         AZF3328_MIXER_SWITCH("PC Speaker Playback Switch", IDX_MIXER_PCBEEP, 15, 1),
 623         AZF3328_MIXER_VOL_SPECIAL("PC Speaker Playback Volume", IDX_MIXER_PCBEEP, 0x0f, 1, 1),
 624         AZF3328_MIXER_SWITCH("Video Playback Switch", IDX_MIXER_VIDEO, 15, 1),
 625         AZF3328_MIXER_VOL_STEREO("Video Playback Volume", IDX_MIXER_VIDEO, 0x1f, 1),
 626         AZF3328_MIXER_SWITCH("Aux Playback Switch", IDX_MIXER_AUX, 15, 1),
 627         AZF3328_MIXER_VOL_STEREO("Aux Playback Volume", IDX_MIXER_AUX, 0x1f, 1),
 628         AZF3328_MIXER_SWITCH("Modem Playback Switch", IDX_MIXER_MODEMOUT, 15, 1),
 629         AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
 630         AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
 631         AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
 632         AZF3328_MIXER_ENUM("Modem Out Select", IDX_MIXER_ADVCTL2, 2, 8),
 633         AZF3328_MIXER_ENUM("Mono Select Source", IDX_MIXER_ADVCTL2, 2, 9),
 634         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
 635         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
 636         AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
 637         AZF3328_MIXER_VOL_SPECIAL("3D Control - Wide", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
 638         AZF3328_MIXER_VOL_SPECIAL("3D Control - Space", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
 639 #if MIXER_TESTING
 640         AZF3328_MIXER_SWITCH("0", IDX_MIXER_ADVCTL2, 0, 0),
 641         AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
 642         AZF3328_MIXER_SWITCH("2", IDX_MIXER_ADVCTL2, 2, 0),
 643         AZF3328_MIXER_SWITCH("3", IDX_MIXER_ADVCTL2, 3, 0),
 644         AZF3328_MIXER_SWITCH("4", IDX_MIXER_ADVCTL2, 4, 0),
 645         AZF3328_MIXER_SWITCH("5", IDX_MIXER_ADVCTL2, 5, 0),
 646         AZF3328_MIXER_SWITCH("6", IDX_MIXER_ADVCTL2, 6, 0),
 647         AZF3328_MIXER_SWITCH("7", IDX_MIXER_ADVCTL2, 7, 0),
 648         AZF3328_MIXER_SWITCH("8", IDX_MIXER_ADVCTL2, 8, 0),
 649         AZF3328_MIXER_SWITCH("9", IDX_MIXER_ADVCTL2, 9, 0),
 650         AZF3328_MIXER_SWITCH("10", IDX_MIXER_ADVCTL2, 10, 0),
 651         AZF3328_MIXER_SWITCH("11", IDX_MIXER_ADVCTL2, 11, 0),
 652         AZF3328_MIXER_SWITCH("12", IDX_MIXER_ADVCTL2, 12, 0),
 653         AZF3328_MIXER_SWITCH("13", IDX_MIXER_ADVCTL2, 13, 0),
 654         AZF3328_MIXER_SWITCH("14", IDX_MIXER_ADVCTL2, 14, 0),
 655         AZF3328_MIXER_SWITCH("15", IDX_MIXER_ADVCTL2, 15, 0),
 656 #endif
 657 };
 658
 659 static const u16 __devinitdata snd_azf3328_init_values[][2] = {
 660         { IDX_MIXER_PLAY_MASTER,        MIXER_MUTE_MASK|0x1f1f },
 661         { IDX_MIXER_MODEMOUT,           MIXER_MUTE_MASK|0x1f1f },
 662         { IDX_MIXER_BASSTREBLE,         0x0000 },
 663         { IDX_MIXER_PCBEEP,             MIXER_MUTE_MASK|0x1f1f },
 664         { IDX_MIXER_MODEMIN,            MIXER_MUTE_MASK|0x1f1f },
 665         { IDX_MIXER_MIC,                MIXER_MUTE_MASK|0x001f },
 666         { IDX_MIXER_LINEIN,             MIXER_MUTE_MASK|0x1f1f },
 667         { IDX_MIXER_CDAUDIO,            MIXER_MUTE_MASK|0x1f1f },
 668         { IDX_MIXER_VIDEO,              MIXER_MUTE_MASK|0x1f1f },
 669         { IDX_MIXER_AUX,                MIXER_MUTE_MASK|0x1f1f },
 670         { IDX_MIXER_WAVEOUT,            MIXER_MUTE_MASK|0x1f1f },
 671         { IDX_MIXER_FMSYNTH,            MIXER_MUTE_MASK|0x1f1f },
 672         { IDX_MIXER_REC_VOLUME,         MIXER_MUTE_MASK|0x0707 },
 673 };
 674
 675 static int __devinit
 676 snd_azf3328_mixer_new(struct snd_azf3328 *chip)
 677 {
 678         struct snd_card *card;
 679         const struct snd_kcontrol_new *sw;
 680         unsigned int idx;
 681         int err;
 682
 683         snd_azf3328_dbgcallenter();
 684         snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
 685
 686         card = chip->card;
 687
 688         /* mixer reset */
 689         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
 690
 691         /* mute and zero volume channels */
 692         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_init_values); idx++) {
 693                 snd_azf3328_mixer_outw(chip,
 694                         snd_azf3328_init_values[idx][0],
 695                         snd_azf3328_init_values[idx][1]);
 696         }
 697
 698         /* add mixer controls */
 699         sw = snd_azf3328_mixer_controls;
 700         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_mixer_controls); idx++, sw++) {
 701                 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(sw, chip))) < 0)
 702                         return err;
 703         }
 704         snd_component_add(card, "AZF3328 mixer");
 705         strcpy(card->mixername, "AZF3328 mixer");
 706
 707         snd_azf3328_dbgcallleave();
 708         return 0;
 709 }
 710
 711 static int
 712 snd_azf3328_hw_params(struct snd_pcm_substream *substream,
 713                                  struct snd_pcm_hw_params *hw_params)
 714 {
 715         int res;
 716         snd_azf3328_dbgcallenter();
 717         res = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 718         snd_azf3328_dbgcallleave();
 719         return res;
 720 }
 721
 722 static int
 723 snd_azf3328_hw_free(struct snd_pcm_substream *substream)
 724 {
 725         snd_azf3328_dbgcallenter();
 726         snd_pcm_lib_free_pages(substream);
 727         snd_azf3328_dbgcallleave();
 728         return 0;
 729 }
 730
 731 static void
 732 snd_azf3328_setfmt(struct snd_azf3328 *chip,
 733                                unsigned int reg,
 734                                unsigned int bitrate,
 735                                unsigned int format_width,
 736                                unsigned int channels
 737 )
 738 {
 739         u16 val = 0xff00;
 740         unsigned long flags;
 741
 742         snd_azf3328_dbgcallenter();
 743         switch (bitrate) {
 744         case  4000: val |= SOUNDFORMAT_FREQ_SUSPECTED_4000; break;
 745         case  4800: val |= SOUNDFORMAT_FREQ_SUSPECTED_4800; break;
 746         case  5512: val |= SOUNDFORMAT_FREQ_5510; break; /* the AZF3328 names it "5510" for some strange reason */
 747         case  6620: val |= SOUNDFORMAT_FREQ_6620; break;
 748         case  8000: val |= SOUNDFORMAT_FREQ_8000; break;
 749         case  9600: val |= SOUNDFORMAT_FREQ_9600; break;
 750         case 11025: val |= SOUNDFORMAT_FREQ_11025; break;
 751         case 13240: val |= SOUNDFORMAT_FREQ_SUSPECTED_13240; break;
 752         case 16000: val |= SOUNDFORMAT_FREQ_16000; break;
 753         case 22050: val |= SOUNDFORMAT_FREQ_22050; break;
 754         case 32000: val |= SOUNDFORMAT_FREQ_32000; break;
 755         case 44100: val |= SOUNDFORMAT_FREQ_44100; break;
 756         case 48000: val |= SOUNDFORMAT_FREQ_48000; break;
 757         case 66200: val |= SOUNDFORMAT_FREQ_SUSPECTED_66200; break;
 758         default:
 759                 snd_printk(KERN_WARNING "unknown bitrate %d, assuming 44.1kHz!\n", bitrate);
 760                 val |= SOUNDFORMAT_FREQ_44100;
 761                 break;
 762         }
 763         /* val = 0xff07; 3m27.993s (65301Hz; -> 64000Hz???) hmm, 66120, 65967, 66123 */
 764         /* val = 0xff09; 17m15.098s (13123,478Hz; -> 12000Hz???) hmm, 13237.2Hz? */
 765         /* val = 0xff0a; 47m30.599s (4764,891Hz; -> 4800Hz???) yup, 4803Hz */
 766         /* val = 0xff0c; 57m0.510s (4010,263Hz; -> 4000Hz???) yup, 4003Hz */
 767         /* val = 0xff05; 5m11.556s (... -> 44100Hz) */
 768         /* val = 0xff03; 10m21.529s (21872,463Hz; -> 22050Hz???) */
 769         /* val = 0xff0f; 20m41.883s (10937,993Hz; -> 11025Hz???) */
 770         /* val = 0xff0d; 41m23.135s (5523,600Hz; -> 5512Hz???) */
 771         /* val = 0xff0e; 28m30.777s (8017Hz; -> 8000Hz???) */
 772
 773         if (channels == 2)
 774                 val |= SOUNDFORMAT_FLAG_2CHANNELS;
 775
 776         if (format_width == 16)
 777                 val |= SOUNDFORMAT_FLAG_16BIT;
 778
 779         spin_lock_irqsave(&chip->reg_lock, flags);
 780
 781         /* set bitrate/format */
 782         snd_azf3328_codec_outw(chip, reg, val);
 783
 784         /* changing the bitrate/format settings switches off the
 785          * audio output with an annoying click in case of 8/16bit format change
 786          * (maybe shutting down DAC/ADC?), thus immediately
 787          * do some tweaking to reenable it and get rid of the clicking
 788          * (FIXME: yes, it works, but what exactly am I doing here?? :)
 789          * FIXME: does this have some side effects for full-duplex
 790          * or other dramatic side effects? */
 791         if (reg == IDX_IO_PLAY_SOUNDFORMAT) /* only do it for playback */
 792                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 793                         snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) |
 794                         DMA_PLAY_SOMETHING1 |
 795                         DMA_PLAY_SOMETHING2 |
 796                         SOMETHING_ALMOST_ALWAYS_SET |
 797                         DMA_EPILOGUE_SOMETHING |
 798                         DMA_SOMETHING_ELSE
 799                 );
 800
 801         spin_unlock_irqrestore(&chip->reg_lock, flags);
 802         snd_azf3328_dbgcallleave();
 803 }
 804
 805 static void
 806 snd_azf3328_setdmaa(struct snd_azf3328 *chip,
 807                                 long unsigned int addr,
 808                                 unsigned int count,
 809                                 unsigned int size,
 810                                 int do_recording)
 811 {
 812         unsigned long flags, portbase;
 813         unsigned int is_running;
 814
 815         snd_azf3328_dbgcallenter();
 816         if (do_recording)
 817         {
 818                 /* access capture registers, i.e. skip playback reg section */
 819                 portbase = chip->codec_port + 0x20;
 820                 is_running = chip->is_recording;
 821         }
 822         else
 823         {
 824                 /* access the playback register section */
 825                 portbase = chip->codec_port + 0x00;
 826                 is_running = chip->is_playing;
 827         }
 828
 829         /* AZF3328 uses a two buffer pointer DMA playback approach */
 830         if (!is_running)
 831         {
 832                 unsigned long addr_area2;
 833                 unsigned long count_areas, count_tmp; /* width 32bit -- overflow!! */
 834                 count_areas = size/2;
 835                 addr_area2 = addr+count_areas;
 836                 count_areas--; /* max. index */
 837                 snd_azf3328_dbgplay("set DMA: buf1 %08lx[%lu], buf2 %08lx[%lu]\n", addr, count_areas, addr_area2, count_areas);
 838
 839                 /* build combined I/O buffer length word */
 840                 count_tmp = count_areas;
 841                 count_areas |= (count_tmp << 16);
 842                 spin_lock_irqsave(&chip->reg_lock, flags);
 843                 outl(addr, portbase + IDX_IO_PLAY_DMA_START_1);
 844                 outl(addr_area2, portbase + IDX_IO_PLAY_DMA_START_2);
 845                 outl(count_areas, portbase + IDX_IO_PLAY_DMA_LEN_1);
 846                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 847         }
 848         snd_azf3328_dbgcallleave();
 849 }
 850
 851 static int
 852 snd_azf3328_playback_prepare(struct snd_pcm_substream *substream)
 853 {
 854 #if 0
 855         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 856         struct snd_pcm_runtime *runtime = substream->runtime;
 857         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 858         unsigned int count = snd_pcm_lib_period_bytes(substream);
 859 #endif
 860
 861         snd_azf3328_dbgcallenter();
 862 #if 0
 863         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 864                 runtime->rate,
 865                 snd_pcm_format_width(runtime->format),
 866                 runtime->channels);
 867         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 0);
 868 #endif
 869         snd_azf3328_dbgcallleave();
 870         return 0;
 871 }
 872
 873 static int
 874 snd_azf3328_capture_prepare(struct snd_pcm_substream *substream)
 875 {
 876 #if 0
 877         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 878         struct snd_pcm_runtime *runtime = substream->runtime;
 879         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 880         unsigned int count = snd_pcm_lib_period_bytes(substream);
 881 #endif
 882
 883         snd_azf3328_dbgcallenter();
 884 #if 0
 885         snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
 886                 runtime->rate,
 887                 snd_pcm_format_width(runtime->format),
 888                 runtime->channels);
 889         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 1);
 890 #endif
 891         snd_azf3328_dbgcallleave();
 892         return 0;
 893 }
 894
 895 static int
 896 snd_azf3328_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 897 {
 898         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 899         struct snd_pcm_runtime *runtime = substream->runtime;
 900         int result = 0;
 901         unsigned int status1;
 902
 903         snd_azf3328_dbgcalls("snd_azf3328_playback_trigger cmd %d\n", cmd);
 904
 905         switch (cmd) {
 906         case SNDRV_PCM_TRIGGER_START:
 907                 snd_azf3328_dbgplay("START PLAYBACK\n");
 908
 909                 /* mute WaveOut */
 910                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 911
 912                 snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 913                         runtime->rate,
 914                         snd_pcm_format_width(runtime->format),
 915                         runtime->channels);
 916
 917                 spin_lock(&chip->reg_lock);
 918                 /* stop playback */
 919                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 920                 status1 &= ~DMA_RESUME;
 921                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 922
 923                 /* FIXME: clear interrupts or what??? */
 924                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_IRQTYPE, 0xffff);
 925                 spin_unlock(&chip->reg_lock);
 926
 927                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
 928                         snd_pcm_lib_period_bytes(substream),
 929                         snd_pcm_lib_buffer_bytes(substream),
 930                         0);
 931
 932                 spin_lock(&chip->reg_lock);
 933 #ifdef WIN9X
 934                 /* FIXME: enable playback/recording??? */
 935                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
 936                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 937
 938                 /* start playback again */
 939                 /* FIXME: what is this value (0x0010)??? */
 940                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
 941                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 942 #else /* NT4 */
 943                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 944                         0x0000);
 945                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 946                         DMA_PLAY_SOMETHING1);
 947                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 948                         DMA_PLAY_SOMETHING1 |
 949                         DMA_PLAY_SOMETHING2);
 950                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 951                         DMA_RESUME |
 952                         SOMETHING_ALMOST_ALWAYS_SET |
 953                         DMA_EPILOGUE_SOMETHING |
 954                         DMA_SOMETHING_ELSE);
 955 #endif
 956                 spin_unlock(&chip->reg_lock);
 957
 958                 /* now unmute WaveOut */
 959                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 960
 961                 chip->is_playing = 1;
 962                 snd_azf3328_dbgplay("STARTED PLAYBACK\n");
 963                 break;
 964         case SNDRV_PCM_TRIGGER_STOP:
 965                 snd_azf3328_dbgplay("STOP PLAYBACK\n");
 966
 967                 /* mute WaveOut */
 968                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 969
 970                 spin_lock(&chip->reg_lock);
 971                 /* stop playback */
 972                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 973
 974                 status1 &= ~DMA_RESUME;
 975                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 976
 977                 /* hmm, is this really required? we're resetting the same bit
 978                  * immediately thereafter... */
 979                 status1 |= DMA_PLAY_SOMETHING1;
 980                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 981
 982                 status1 &= ~DMA_PLAY_SOMETHING1;
 983                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 984                 spin_unlock(&chip->reg_lock);
 985
 986                 /* now unmute WaveOut */
 987                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 988                 chip->is_playing = 0;
 989                 snd_azf3328_dbgplay("STOPPED PLAYBACK\n");
 990                 break;
 991         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 992                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
 993                 break;
 994         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 995                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
 996                 break;
 997         default:
 998                 return -EINVAL;
 999         }
1000
1001         snd_azf3328_dbgcallleave();
1002         return result;
1003 }
1004
1005 /* this is just analogous to playback; I'm not quite sure whether recording
1006  * should actually be triggered like that */
1007 static int
1008 snd_azf3328_capture_trigger(struct snd_pcm_substream *substream, int cmd)
1009 {
1010         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1011         struct snd_pcm_runtime *runtime = substream->runtime;
1012         int result = 0;
1013         unsigned int status1;
1014
1015         snd_azf3328_dbgcalls("snd_azf3328_capture_trigger cmd %d\n", cmd);
1016
1017         switch (cmd) {
1018         case SNDRV_PCM_TRIGGER_START:
1019
1020                 snd_azf3328_dbgplay("START CAPTURE\n");
1021
1022                 snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
1023                         runtime->rate,
1024                         snd_pcm_format_width(runtime->format),
1025                         runtime->channels);
1026
1027                 spin_lock(&chip->reg_lock);
1028                 /* stop recording */
1029                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1030                 status1 &= ~DMA_RESUME;
1031                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1032
1033                 /* FIXME: clear interrupts or what??? */
1034                 snd_azf3328_codec_outw(chip, IDX_IO_REC_IRQTYPE, 0xffff);
1035                 spin_unlock(&chip->reg_lock);
1036
1037                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
1038                         snd_pcm_lib_period_bytes(substream),
1039                         snd_pcm_lib_buffer_bytes(substream),
1040                         1);
1041
1042                 spin_lock(&chip->reg_lock);
1043 #ifdef WIN9X
1044                 /* FIXME: enable playback/recording??? */
1045                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
1046                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1047
1048                 /* start capture again */
1049                 /* FIXME: what is this value (0x0010)??? */
1050                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
1051                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1052 #else
1053                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1054                         0x0000);
1055                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1056                         DMA_PLAY_SOMETHING1);
1057                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1058                         DMA_PLAY_SOMETHING1 |
1059                         DMA_PLAY_SOMETHING2);
1060                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1061                         DMA_RESUME |
1062                         SOMETHING_ALMOST_ALWAYS_SET |
1063                         DMA_EPILOGUE_SOMETHING |
1064                         DMA_SOMETHING_ELSE);
1065 #endif
1066                 spin_unlock(&chip->reg_lock);
1067
1068                 chip->is_recording = 1;
1069                 snd_azf3328_dbgplay("STARTED CAPTURE\n");
1070                 break;
1071         case SNDRV_PCM_TRIGGER_STOP:
1072                 snd_azf3328_dbgplay("STOP CAPTURE\n");
1073
1074                 spin_lock(&chip->reg_lock);
1075                 /* stop recording */
1076                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1077
1078                 status1 &= ~DMA_RESUME;
1079                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1080
1081                 status1 |= DMA_PLAY_SOMETHING1;
1082                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1083
1084                 status1 &= ~DMA_PLAY_SOMETHING1;
1085                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1086                 spin_unlock(&chip->reg_lock);
1087
1088                 chip->is_recording = 0;
1089                 snd_azf3328_dbgplay("STOPPED CAPTURE\n");
1090                 break;
1091         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1092                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1093                 break;
1094         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1095                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1096                 break;
1097         default:
1098                 return -EINVAL;
1099         }
1100
1101         snd_azf3328_dbgcallleave();
1102         return result;
1103 }
1104
1105 static snd_pcm_uframes_t
1106 snd_azf3328_playback_pointer(struct snd_pcm_substream *substream)
1107 {
1108         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1109         unsigned long bufptr, result;
1110         snd_pcm_uframes_t frmres;
1111
1112 #ifdef QUERY_HARDWARE
1113         bufptr = inl(chip->codec_port+IDX_IO_PLAY_DMA_START_1);
1114 #else
1115         bufptr = substream->runtime->dma_addr;
1116 #endif
1117         result = inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS);
1118
1119         /* calculate offset */
1120         result -= bufptr;
1121         frmres = bytes_to_frames( substream->runtime, result);
1122         snd_azf3328_dbgplay("PLAY @ 0x%8lx, frames %8ld\n", result, frmres);
1123         return frmres;
1124 }
1125
1126 static snd_pcm_uframes_t
1127 snd_azf3328_capture_pointer(struct snd_pcm_substream *substream)
1128 {
1129         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1130         unsigned long bufptr, result;
1131         snd_pcm_uframes_t frmres;
1132
1133 #ifdef QUERY_HARDWARE
1134         bufptr = inl(chip->codec_port+IDX_IO_REC_DMA_START_1);
1135 #else
1136         bufptr = substream->runtime->dma_addr;
1137 #endif
1138         result = inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS);
1139
1140         /* calculate offset */
1141         result -= bufptr;
1142         frmres = bytes_to_frames( substream->runtime, result);
1143         snd_azf3328_dbgplay("REC  @ 0x%8lx, frames %8ld\n", result, frmres);
1144         return frmres;
1145 }
1146
1147 static irqreturn_t
1148 snd_azf3328_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1149 {
1150         struct snd_azf3328 *chip = dev_id;
1151         u8 status, which;
1152         static unsigned long irq_count;
1153
1154         status = snd_azf3328_codec_inb(chip, IDX_IO_IRQSTATUS);
1155
1156         /* fast path out, to ease interrupt sharing */
1157         if (!(status & (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_MPU401|IRQ_TIMER)))
1158                 return IRQ_NONE; /* must be interrupt for another device */
1159
1160         snd_azf3328_dbgplay("Interrupt %ld!\nIDX_IO_PLAY_FLAGS %04x, IDX_IO_PLAY_IRQTYPE %04x, IDX_IO_IRQSTATUS %04x\n",
1161                 irq_count,
1162                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS),
1163                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_IRQTYPE),
1164                 status);
1165
1166         if (status & IRQ_TIMER)
1167         {
1168                 /* snd_azf3328_dbgplay("timer %ld\n", inl(chip->codec_port+IDX_IO_TIMER_VALUE) & TIMER_VALUE_MASK); */
1169                 if (chip->timer)
1170                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1171                 /* ACK timer */
1172                 spin_lock(&chip->reg_lock);
1173                 snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x07);
1174                 spin_unlock(&chip->reg_lock);
1175                 snd_azf3328_dbgplay("azt3328: timer IRQ\n");
1176         }
1177         if (status & IRQ_PLAYBACK)
1178         {
1179                 spin_lock(&chip->reg_lock);
1180                 which = snd_azf3328_codec_inb(chip, IDX_IO_PLAY_IRQTYPE);
1181                 /* ack all IRQ types immediately */
1182                 snd_azf3328_codec_outb(chip, IDX_IO_PLAY_IRQTYPE, which);
1183                 spin_unlock(&chip->reg_lock);
1184
1185                 if (chip->pcm && chip->playback_substream)
1186                 {
1187                         snd_pcm_period_elapsed(chip->playback_substream);
1188                         snd_azf3328_dbgplay("PLAY period done (#%x), @ %x\n",
1189                                 which,
1190                                 inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS));
1191                 }
1192                 else
1193                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1194                 if (which & IRQ_PLAY_SOMETHING)
1195                         snd_azf3328_dbgplay("azt3328: unknown play IRQ type occurred, please report!\n");
1196         }
1197         if (status & IRQ_RECORDING)
1198         {
1199                 spin_lock(&chip->reg_lock);
1200                 which = snd_azf3328_codec_inb(chip, IDX_IO_REC_IRQTYPE);
1201                 /* ack all IRQ types immediately */
1202                 snd_azf3328_codec_outb(chip, IDX_IO_REC_IRQTYPE, which);
1203                 spin_unlock(&chip->reg_lock);
1204
1205                 if (chip->pcm && chip->capture_substream)
1206                 {
1207                         snd_pcm_period_elapsed(chip->capture_substream);
1208                         snd_azf3328_dbgplay("REC  period done (#%x), @ %x\n",
1209                                 which,
1210                                 inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS));
1211                 }
1212                 else
1213                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1214                 if (which & IRQ_REC_SOMETHING)
1215                         snd_azf3328_dbgplay("azt3328: unknown rec IRQ type occurred, please report!\n");
1216         }
1217         /* MPU401 has less critical IRQ requirements
1218          * than timer and playback/recording, right? */
1219         if (status & IRQ_MPU401)
1220         {
1221                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
1222
1223                 /* hmm, do we have to ack the IRQ here somehow?
1224                  * If so, then I don't know how... */
1225                 snd_azf3328_dbgplay("azt3328: MPU401 IRQ\n");
1226         }
1227         irq_count++;
1228         return IRQ_HANDLED;
1229 }
1230
1231 /*****************************************************************/
1232
1233 static const struct snd_pcm_hardware snd_azf3328_playback =
1234 {
1235         /* FIXME!! Correct? */
1236         .info =                 SNDRV_PCM_INFO_MMAP |
1237                                 SNDRV_PCM_INFO_INTERLEAVED |
1238                                 SNDRV_PCM_INFO_MMAP_VALID,
1239         .formats =              SNDRV_PCM_FMTBIT_S8 |
1240                                 SNDRV_PCM_FMTBIT_U8 |
1241                                 SNDRV_PCM_FMTBIT_S16_LE |
1242                                 SNDRV_PCM_FMTBIT_U16_LE,
1243         .rates =                SNDRV_PCM_RATE_5512 |
1244                                 SNDRV_PCM_RATE_8000_48000 |
1245                                 SNDRV_PCM_RATE_KNOT,
1246         .rate_min =             4000,
1247         .rate_max =             66200,
1248         .channels_min =         1,
1249         .channels_max =         2,
1250         .buffer_bytes_max =     65536,
1251         .period_bytes_min =     64,
1252         .period_bytes_max =     65536,
1253         .periods_min =          1,
1254         .periods_max =          1024,
1255         /* FIXME: maybe that card actually has a FIFO?
1256          * Hmm, it seems newer revisions do have one, but we still don't know
1257          * its size... */
1258         .fifo_size =            0,
1259 };
1260
1261 static const struct snd_pcm_hardware snd_azf3328_capture =
1262 {
1263         /* FIXME */
1264         .info =                 SNDRV_PCM_INFO_MMAP |
1265                                 SNDRV_PCM_INFO_INTERLEAVED |
1266                                 SNDRV_PCM_INFO_MMAP_VALID,
1267         .formats =              SNDRV_PCM_FMTBIT_S8 |
1268                                 SNDRV_PCM_FMTBIT_U8 |
1269                                 SNDRV_PCM_FMTBIT_S16_LE |
1270                                 SNDRV_PCM_FMTBIT_U16_LE,
1271         .rates =                SNDRV_PCM_RATE_5512 |
1272                                 SNDRV_PCM_RATE_8000_48000 |
1273                                 SNDRV_PCM_RATE_KNOT,
1274         .rate_min =             4000,
1275         .rate_max =             66200,
1276         .channels_min =         1,
1277         .channels_max =         2,
1278         .buffer_bytes_max =     65536,
1279         .period_bytes_min =     64,
1280         .period_bytes_max =     65536,
1281         .periods_min =          1,
1282         .periods_max =          1024,
1283         .fifo_size =            0,
1284 };
1285
1286
1287 static unsigned int snd_azf3328_fixed_rates[] = {
1288         4000, 4800, 5512, 6620, 8000, 9600, 11025, 13240, 16000, 22050, 32000,
1289         44100, 48000, 66200 };
1290 static struct snd_pcm_hw_constraint_list snd_azf3328_hw_constraints_rates = {
1291         .count = ARRAY_SIZE(snd_azf3328_fixed_rates),
1292         .list = snd_azf3328_fixed_rates,
1293         .mask = 0,
1294 };
1295
1296 /*****************************************************************/
1297
1298 static int
1299 snd_azf3328_playback_open(struct snd_pcm_substream *substream)
1300 {
1301         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1302         struct snd_pcm_runtime *runtime = substream->runtime;
1303
1304         snd_azf3328_dbgcallenter();
1305         chip->playback_substream = substream;
1306         runtime->hw = snd_azf3328_playback;
1307         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1308                                    &snd_azf3328_hw_constraints_rates);
1309         snd_azf3328_dbgcallleave();
1310         return 0;
1311 }
1312
1313 static int
1314 snd_azf3328_capture_open(struct snd_pcm_substream *substream)
1315 {
1316         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1317         struct snd_pcm_runtime *runtime = substream->runtime;
1318
1319         snd_azf3328_dbgcallenter();
1320         chip->capture_substream = substream;
1321         runtime->hw = snd_azf3328_capture;
1322         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1323                                    &snd_azf3328_hw_constraints_rates);
1324         snd_azf3328_dbgcallleave();
1325         return 0;
1326 }
1327
1328 static int
1329 snd_azf3328_playback_close(struct snd_pcm_substream *substream)
1330 {
1331         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1332
1333         snd_azf3328_dbgcallenter();
1334
1335         chip->playback_substream = NULL;
1336         snd_azf3328_dbgcallleave();
1337         return 0;
1338 }
1339
1340 static int
1341 snd_azf3328_capture_close(struct snd_pcm_substream *substream)
1342 {
1343         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1344
1345         snd_azf3328_dbgcallenter();
1346         chip->capture_substream = NULL;
1347         snd_azf3328_dbgcallleave();
1348         return 0;
1349 }
1350
1351 /******************************************************************/
1352
1353 static struct snd_pcm_ops snd_azf3328_playback_ops = {
1354         .open =         snd_azf3328_playback_open,
1355         .close =        snd_azf3328_playback_close,
1356         .ioctl =        snd_pcm_lib_ioctl,
1357         .hw_params =    snd_azf3328_hw_params,
1358         .hw_free =      snd_azf3328_hw_free,
1359         .prepare =      snd_azf3328_playback_prepare,
1360         .trigger =      snd_azf3328_playback_trigger,
1361         .pointer =      snd_azf3328_playback_pointer
1362 };
1363
1364 static struct snd_pcm_ops snd_azf3328_capture_ops = {
1365         .open =         snd_azf3328_capture_open,
1366         .close =        snd_azf3328_capture_close,
1367         .ioctl =        snd_pcm_lib_ioctl,
1368         .hw_params =    snd_azf3328_hw_params,
1369         .hw_free =      snd_azf3328_hw_free,
1370         .prepare =      snd_azf3328_capture_prepare,
1371         .trigger =      snd_azf3328_capture_trigger,
1372         .pointer =      snd_azf3328_capture_pointer
1373 };
1374
1375 static int __devinit
1376 snd_azf3328_pcm(struct snd_azf3328 *chip, int device)
1377 {
1378         struct snd_pcm *pcm;
1379         int err;
1380
1381         snd_azf3328_dbgcallenter();
1382         if ((err = snd_pcm_new(chip->card, "AZF3328 DSP", device, 1, 1, &pcm)) < 0)
1383                 return err;
1384         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_azf3328_playback_ops);
1385         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_azf3328_capture_ops);
1386
1387         pcm->private_data = chip;
1388         pcm->info_flags = 0;
1389         strcpy(pcm->name, chip->card->shortname);
1390         chip->pcm = pcm;
1391
1392         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1393                                               snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1394
1395         snd_azf3328_dbgcallleave();
1396         return 0;
1397 }
1398
1399 /******************************************************************/
1400
1401 #ifdef SUPPORT_JOYSTICK
1402 static int __devinit
1403 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev)
1404 {
1405         struct gameport *gp;
1406         struct resource *r;
1407
1408         if (!joystick[dev])
1409                 return -ENODEV;
1410
1411         if (!(r = request_region(0x200, 8, "AZF3328 gameport"))) {
1412                 printk(KERN_WARNING "azt3328: cannot reserve joystick ports\n");
1413                 return -EBUSY;
1414         }
1415
1416         chip->gameport = gp = gameport_allocate_port();
1417         if (!gp) {
1418                 printk(KERN_ERR "azt3328: cannot allocate memory for gameport\n");
1419                 release_and_free_resource(r);
1420                 return -ENOMEM;
1421         }
1422
1423         gameport_set_name(gp, "AZF3328 Gameport");
1424         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1425         gameport_set_dev_parent(gp, &chip->pci->dev);
1426         gp->io = 0x200;
1427         gameport_set_port_data(gp, r);
1428
1429         snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1430                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) | LEGACY_JOY);
1431
1432         gameport_register_port(chip->gameport);
1433
1434         return 0;
1435 }
1436
1437 static void
1438 snd_azf3328_free_joystick(struct snd_azf3328 *chip)
1439 {
1440         if (chip->gameport) {
1441                 struct resource *r = gameport_get_port_data(chip->gameport);
1442
1443                 gameport_unregister_port(chip->gameport);
1444                 chip->gameport = NULL;
1445                 /* disable gameport */
1446                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1447                                       snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1448                 release_and_free_resource(r);
1449         }
1450 }
1451 #else
1452 static inline int
1453 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev) { return -ENOSYS; }
1454 static inline void
1455 snd_azf3328_free_joystick(struct snd_azf3328 *chip) { }
1456 #endif
1457
1458 /******************************************************************/
1459
1460 static int
1461 snd_azf3328_free(struct snd_azf3328 *chip)
1462 {
1463         if (chip->irq < 0)
1464                 goto __end_hw;
1465
1466         /* reset (close) mixer */
1467         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1); /* first mute master volume */
1468         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
1469
1470         /* interrupt setup - mask everything (FIXME!) */
1471         /* well, at least we know how to disable the timer IRQ */
1472         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00);
1473
1474         synchronize_irq(chip->irq);
1475 __end_hw:
1476         snd_azf3328_free_joystick(chip);
1477         if (chip->irq >= 0)
1478                 free_irq(chip->irq, (void *)chip);
1479         pci_release_regions(chip->pci);
1480         pci_disable_device(chip->pci);
1481
1482         kfree(chip);
1483         return 0;
1484 }
1485
1486 static int
1487 snd_azf3328_dev_free(struct snd_device *device)
1488 {
1489         struct snd_azf3328 *chip = device->device_data;
1490         return snd_azf3328_free(chip);
1491 }
1492
1493 /******************************************************************/
1494
1495 /*** NOTE: the physical timer resolution actually is 1024000 ticks per second,
1496  *** but announcing those attributes to user-space would make programs
1497  *** configure the timer to a 1 tick value, resulting in an absolutely fatal
1498  *** timer IRQ storm.
1499  *** Thus I chose to announce a down-scaled virtual timer to the outside and
1500  *** calculate real timer countdown values internally.
1501  *** (the scale factor can be set via module parameter "seqtimer_scaling").
1502  ***/
1503
1504 static int
1505 snd_azf3328_timer_start(struct snd_timer *timer)
1506 {
1507         struct snd_azf3328 *chip;
1508         unsigned long flags;
1509         unsigned int delay;
1510
1511         snd_azf3328_dbgcallenter();
1512         chip = snd_timer_chip(timer);
1513         delay = ((timer->sticks * seqtimer_scaling) - 1) & TIMER_VALUE_MASK;
1514         if (delay < 49)
1515         {
1516                 /* uhoh, that's not good, since user-space won't know about
1517                  * this timing tweak
1518                  * (we need to do it to avoid a lockup, though) */
1519
1520                 snd_azf3328_dbgtimer("delay was too low (%d)!\n", delay);
1521                 delay = 49; /* minimum time is 49 ticks */
1522         }
1523         snd_azf3328_dbgtimer("setting timer countdown value %d, add COUNTDOWN|IRQ\n", delay);
1524         delay |= TIMER_ENABLE_COUNTDOWN | TIMER_ENABLE_IRQ;
1525         spin_lock_irqsave(&chip->reg_lock, flags);
1526         snd_azf3328_codec_outl(chip, IDX_IO_TIMER_VALUE, delay);
1527         spin_unlock_irqrestore(&chip->reg_lock, flags);
1528         snd_azf3328_dbgcallleave();
1529         return 0;
1530 }
1531
1532 static int
1533 snd_azf3328_timer_stop(struct snd_timer *timer)
1534 {
1535         struct snd_azf3328 *chip;
1536         unsigned long flags;
1537
1538         snd_azf3328_dbgcallenter();
1539         chip = snd_timer_chip(timer);
1540         spin_lock_irqsave(&chip->reg_lock, flags);
1541         /* disable timer countdown and interrupt */
1542         /* FIXME: should we write TIMER_ACK_IRQ here? */
1543         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0);
1544         spin_unlock_irqrestore(&chip->reg_lock, flags);
1545         snd_azf3328_dbgcallleave();
1546         return 0;
1547 }
1548
1549
1550 static int
1551 snd_azf3328_timer_precise_resolution(struct snd_timer *timer,
1552                                                unsigned long *num, unsigned long *den)
1553 {
1554         snd_azf3328_dbgcallenter();
1555         *num = 1;
1556         *den = 1024000 / seqtimer_scaling;
1557         snd_azf3328_dbgcallleave();
1558         return 0;
1559 }
1560
1561 static struct snd_timer_hardware snd_azf3328_timer_hw = {
1562         .flags = SNDRV_TIMER_HW_AUTO,
1563         .resolution = 977, /* 1000000/1024000 = 0.9765625us */
1564         .ticks = 1024000, /* max tick count, defined by the value register; actually it's not 1024000, but 1048576, but we don't care */
1565         .start = snd_azf3328_timer_start,
1566         .stop = snd_azf3328_timer_stop,
1567         .precise_resolution = snd_azf3328_timer_precise_resolution,
1568 };
1569
1570 static int __devinit
1571 snd_azf3328_timer(struct snd_azf3328 *chip, int device)
1572 {
1573         struct snd_timer *timer = NULL;
1574         struct snd_timer_id tid;
1575         int err;
1576
1577         snd_azf3328_dbgcallenter();
1578         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1579         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1580         tid.card = chip->card->number;
1581         tid.device = device;
1582         tid.subdevice = 0;
1583
1584         snd_azf3328_timer_hw.resolution *= seqtimer_scaling;
1585         snd_azf3328_timer_hw.ticks /= seqtimer_scaling;
1586         if ((err = snd_timer_new(chip->card, "AZF3328", &tid, &timer)) < 0) {
1587                 goto out;
1588         }
1589
1590         strcpy(timer->name, "AZF3328 timer");
1591         timer->private_data = chip;
1592         timer->hw = snd_azf3328_timer_hw;
1593
1594         chip->timer = timer;
1595
1596         err = 0;
1597
1598 out:
1599         snd_azf3328_dbgcallleave();
1600         return err;
1601 }
1602
1603 /******************************************************************/
1604
1605 #if 0
1606 /* check whether a bit can be modified */
1607 static void
1608 snd_azf3328_test_bit(unsigned int reg, int bit)
1609 {
1610         unsigned char val, valoff, valon;
1611
1612         val = inb(reg);
1613
1614         outb(val & ~(1 << bit), reg);
1615         valoff = inb(reg);
1616
1617         outb(val|(1 << bit), reg);
1618         valon = inb(reg);
1619
1620         outb(val, reg);
1621
1622         printk(KERN_ERR "reg %04x bit %d: %02x %02x %02x\n", reg, bit, val, valoff, valon);
1623 }
1624 #endif
1625
1626 static void
1627 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip)
1628 {
1629 #if DEBUG_MISC
1630         u16 tmp;
1631
1632         snd_azf3328_dbgmisc("codec_port 0x%lx, io2_port 0x%lx, mpu_port 0x%lx, synth_port 0x%lx, mixer_port 0x%lx, irq %d\n", chip->codec_port, chip->io2_port, chip->mpu_port, chip->synth_port, chip->mixer_port, chip->irq);
1633
1634         snd_azf3328_dbgmisc("io2 %02x %02x %02x %02x %02x %02x\n", snd_azf3328_io2_inb(chip, 0), snd_azf3328_io2_inb(chip, 1), snd_azf3328_io2_inb(chip, 2), snd_azf3328_io2_inb(chip, 3), snd_azf3328_io2_inb(chip, 4), snd_azf3328_io2_inb(chip, 5));
1635
1636         for (tmp=0; tmp <= 0x01; tmp += 1)
1637                 snd_azf3328_dbgmisc("0x%02x: opl 0x%04x, mpu300 0x%04x, mpu310 0x%04x, mpu320 0x%04x, mpu330 0x%04x\n", tmp, inb(0x388 + tmp), inb(0x300 + tmp), inb(0x310 + tmp), inb(0x320 + tmp), inb(0x330 + tmp));
1638
1639         for (tmp = 0; tmp <= 0x6E; tmp += 2)
1640                 snd_azf3328_dbgmisc("0x%02x: 0x%04x\n", tmp, snd_azf3328_codec_inb(chip, tmp));
1641 #endif
1642 }
1643
1644 static int __devinit
1645 snd_azf3328_create(struct snd_card *card,
1646                                          struct pci_dev *pci,
1647                                          unsigned long device_type,
1648                                          struct snd_azf3328 ** rchip)
1649 {
1650         struct snd_azf3328 *chip;
1651         int err;
1652         static struct snd_device_ops ops = {
1653                 .dev_free =     snd_azf3328_dev_free,
1654         };
1655         u16 tmp;
1656
1657         *rchip = NULL;
1658
1659         if ((err = pci_enable_device(pci)) < 0)
1660                 return err;
1661
1662         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1663         if (chip == NULL) {
1664                 err = -ENOMEM;
1665                 goto out_err;
1666         }
1667         spin_lock_init(&chip->reg_lock);
1668         chip->card = card;
1669         chip->pci = pci;
1670         chip->irq = -1;
1671
1672         /* check if we can restrict PCI DMA transfers to 24 bits */
1673         if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
1674             pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
1675                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
1676                 err = -ENXIO;
1677                 goto out_err;
1678         }
1679
1680         if ((err = pci_request_regions(pci, "Aztech AZF3328")) < 0) {
1681                 goto out_err;
1682         }
1683
1684         chip->codec_port = pci_resource_start(pci, 0);
1685         chip->io2_port   = pci_resource_start(pci, 1);
1686         chip->mpu_port   = pci_resource_start(pci, 2);
1687         chip->synth_port = pci_resource_start(pci, 3);
1688         chip->mixer_port = pci_resource_start(pci, 4);
1689
1690         if (request_irq(pci->irq, snd_azf3328_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
1691                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1692                 err = -EBUSY;
1693                 goto out_err;
1694         }
1695         chip->irq = pci->irq;
1696         pci_set_master(pci);
1697         synchronize_irq(chip->irq);
1698
1699         snd_azf3328_debug_show_ports(chip);
1700
1701         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1702                 goto out_err;
1703         }
1704
1705         /* create mixer interface & switches */
1706         if ((err = snd_azf3328_mixer_new(chip)) < 0)
1707                 goto out_err;
1708
1709 #if 0
1710         /* set very low bitrate to reduce noise and power consumption? */
1711         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT, 5512, 8, 1);
1712 #endif
1713
1714         /* standard chip init stuff */
1715         /* default IRQ init value */
1716         tmp = DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE;
1717
1718         spin_lock_irq(&chip->reg_lock);
1719         snd_azf3328_codec_outb(chip, IDX_IO_PLAY_FLAGS, tmp);
1720         snd_azf3328_codec_outb(chip, IDX_IO_REC_FLAGS, tmp);
1721         snd_azf3328_codec_outb(chip, IDX_IO_SOMETHING_FLAGS, tmp);
1722         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00); /* disable timer */
1723         spin_unlock_irq(&chip->reg_lock);
1724
1725         snd_card_set_dev(card, &pci->dev);
1726
1727         *rchip = chip;
1728
1729         err = 0;
1730         goto out;
1731
1732 out_err:
1733         if (chip)
1734                 snd_azf3328_free(chip);
1735         pci_disable_device(pci);
1736
1737 out:
1738         return err;
1739 }
1740
1741 static int __devinit
1742 snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
1743 {
1744         static int dev;
1745         struct snd_card *card;
1746         struct snd_azf3328 *chip;
1747         struct snd_opl3 *opl3;
1748         int err;
1749
1750         snd_azf3328_dbgcallenter();
1751         if (dev >= SNDRV_CARDS)
1752                 return -ENODEV;
1753         if (!enable[dev]) {
1754                 dev++;
1755                 return -ENOENT;
1756         }
1757
1758         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0 );
1759         if (card == NULL)
1760                 return -ENOMEM;
1761
1762         strcpy(card->driver, "AZF3328");
1763         strcpy(card->shortname, "Aztech AZF3328 (PCI168)");
1764
1765         if ((err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1766                 goto out_err;
1767         }
1768
1769         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_MPU401,
1770                                         chip->mpu_port, 1, pci->irq, 0,
1771                                         &chip->rmidi)) < 0) {
1772                 snd_printk(KERN_ERR "azf3328: no MPU-401 device at 0x%lx?\n", chip->mpu_port);
1773                 goto out_err;
1774         }
1775
1776         if ((err = snd_azf3328_timer(chip, 0)) < 0) {
1777                 goto out_err;
1778         }
1779
1780         if ((err = snd_azf3328_pcm(chip, 0)) < 0) {
1781                 goto out_err;
1782         }
1783
1784         if (snd_opl3_create(card, chip->synth_port, chip->synth_port+2,
1785                             OPL3_HW_AUTO, 1, &opl3) < 0) {
1786                 snd_printk(KERN_ERR "azf3328: no OPL3 device at 0x%lx-0x%lx?\n",
1787                            chip->synth_port, chip->synth_port+2 );
1788         } else {
1789                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1790                         goto out_err;
1791                 }
1792         }
1793
1794         sprintf(card->longname, "%s at 0x%lx, irq %i",
1795                 card->shortname, chip->codec_port, chip->irq);
1796
1797         if ((err = snd_card_register(card)) < 0) {
1798                 goto out_err;
1799         }
1800
1801 #ifdef MODULE
1802         printk(
1803 "azt3328: Sound driver for Aztech AZF3328-based soundcards such as PCI168\n"
1804 "azt3328: (hardware was completely undocumented - ZERO support from Aztech).\n"
1805 "azt3328: Feel free to contact andi AT lisas.de for bug reports etc.!\n"
1806 "azt3328: User-scalable sequencer timer set to %dHz (1024000Hz / %d).\n",
1807         1024000 / seqtimer_scaling, seqtimer_scaling);
1808 #endif
1809
1810         if (snd_azf3328_config_joystick(chip, dev) < 0)
1811                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1812                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1813
1814         pci_set_drvdata(pci, card);
1815         dev++;
1816
1817         err = 0;
1818         goto out;
1819
1820 out_err:
1821         snd_card_free(card);
1822
1823 out:
1824         snd_azf3328_dbgcallleave();
1825         return err;
1826 }
1827
1828 static void __devexit
1829 snd_azf3328_remove(struct pci_dev *pci)
1830 {
1831         snd_azf3328_dbgcallenter();
1832         snd_card_free(pci_get_drvdata(pci));
1833         pci_set_drvdata(pci, NULL);
1834         snd_azf3328_dbgcallleave();
1835 }
1836
1837 static struct pci_driver driver = {
1838         .name = "AZF3328",
1839         .id_table = snd_azf3328_ids,
1840         .probe = snd_azf3328_probe,
1841         .remove = __devexit_p(snd_azf3328_remove),
1842 };
1843
1844 static int __init
1845 alsa_card_azf3328_init(void)
1846 {
1847         int err;
1848         snd_azf3328_dbgcallenter();
1849         err = pci_register_driver(&driver);
1850         snd_azf3328_dbgcallleave();
1851         return err;
1852 }
1853
1854 static void __exit
1855 alsa_card_azf3328_exit(void)
1856 {
1857         snd_azf3328_dbgcallenter();
1858         pci_unregister_driver(&driver);
1859         snd_azf3328_dbgcallleave();
1860 }
1861
1862 module_init(alsa_card_azf3328_init)
1863 module_exit(alsa_card_azf3328_exit)