git.oblomov.eu Git - linux-2.6/blob - 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 <sound/core.h>
 108 #include <sound/control.h>
 109 #include <sound/pcm.h>
 110 #include <sound/rawmidi.h>
 111 #include <sound/mpu401.h>
 112 #include <sound/opl3.h>
 113 #include <sound/initval.h>
 114 #include "azt3328.h"
 115
 116 MODULE_AUTHOR("Andreas Mohr <andi AT lisas.de>");
 117 MODULE_DESCRIPTION("Aztech AZF3328 (PCI168)");
 118 MODULE_LICENSE("GPL");
 119 MODULE_SUPPORTED_DEVICE("{{Aztech,AZF3328}}");
 120
 121 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
 122 #define SUPPORT_JOYSTICK 1
 123 #endif
 124
 125 #define DEBUG_MISC      0
 126 #define DEBUG_CALLS     0
 127 #define DEBUG_MIXER     0
 128 #define DEBUG_PLAY_REC  0
 129 #define DEBUG_IO        0
 130 #define DEBUG_TIMER     0
 131 #define MIXER_TESTING   0
 132
 133 #if DEBUG_MISC
 134 #define snd_azf3328_dbgmisc(format, args...) printk(KERN_ERR format, ##args)
 135 #else
 136 #define snd_azf3328_dbgmisc(format, args...)
 137 #endif
 138
 139 #if DEBUG_CALLS
 140 #define snd_azf3328_dbgcalls(format, args...) printk(format, ##args)
 141 #define snd_azf3328_dbgcallenter() printk(KERN_ERR "--> %s\n", __FUNCTION__)
 142 #define snd_azf3328_dbgcallleave() printk(KERN_ERR "<-- %s\n", __FUNCTION__)
 143 #else
 144 #define snd_azf3328_dbgcalls(format, args...)
 145 #define snd_azf3328_dbgcallenter()
 146 #define snd_azf3328_dbgcallleave()
 147 #endif
 148
 149 #if DEBUG_MIXER
 150 #define snd_azf3328_dbgmixer(format, args...) printk(format, ##args)
 151 #else
 152 #define snd_azf3328_dbgmixer(format, args...)
 153 #endif
 154
 155 #if DEBUG_PLAY_REC
 156 #define snd_azf3328_dbgplay(format, args...) printk(KERN_ERR format, ##args)
 157 #else
 158 #define snd_azf3328_dbgplay(format, args...)
 159 #endif
 160
 161 #if DEBUG_MISC
 162 #define snd_azf3328_dbgtimer(format, args...) printk(KERN_ERR format, ##args)
 163 #else
 164 #define snd_azf3328_dbgtimer(format, args...)
 165 #endif
 166
 167 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 168 module_param_array(index, int, NULL, 0444);
 169 MODULE_PARM_DESC(index, "Index value for AZF3328 soundcard.");
 170
 171 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 172 module_param_array(id, charp, NULL, 0444);
 173 MODULE_PARM_DESC(id, "ID string for AZF3328 soundcard.");
 174
 175 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
 176 module_param_array(enable, bool, NULL, 0444);
 177 MODULE_PARM_DESC(enable, "Enable AZF3328 soundcard.");
 178
 179 #ifdef SUPPORT_JOYSTICK
 180 static int joystick[SNDRV_CARDS];
 181 module_param_array(joystick, bool, NULL, 0444);
 182 MODULE_PARM_DESC(joystick, "Enable joystick for AZF3328 soundcard.");
 183 #endif
 184
 185 static int seqtimer_scaling = 128;
 186 module_param(seqtimer_scaling, int, 0444);
 187 MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (lockup danger!). Default 128.");
 188
 189 struct snd_azf3328 {
 190         /* often-used fields towards beginning, then grouped */
 191         unsigned long codec_port;
 192         unsigned long io2_port;
 193         unsigned long mpu_port;
 194         unsigned long synth_port;
 195         unsigned long mixer_port;
 196
 197         spinlock_t reg_lock;
 198
 199         struct snd_timer *timer;
 200
 201         struct snd_pcm *pcm;
 202         struct snd_pcm_substream *playback_substream;
 203         struct snd_pcm_substream *capture_substream;
 204         unsigned int is_playing;
 205         unsigned int is_recording;
 206
 207         struct snd_card *card;
 208         struct snd_rawmidi *rmidi;
 209
 210 #ifdef SUPPORT_JOYSTICK
 211         struct gameport *gameport;
 212 #endif
 213
 214         struct pci_dev *pci;
 215         int irq;
 216 };
 217
 218 static const struct pci_device_id snd_azf3328_ids[] = {
 219         { 0x122D, 0x50DC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* PCI168/3328 */
 220         { 0x122D, 0x80DA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* 3328 */
 221         { 0, }
 222 };
 223
 224 MODULE_DEVICE_TABLE(pci, snd_azf3328_ids);
 225
 226 static inline void
 227 snd_azf3328_codec_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 228 {
 229         outb(value, chip->codec_port + reg);
 230 }
 231
 232 static inline u8
 233 snd_azf3328_codec_inb(const struct snd_azf3328 *chip, int reg)
 234 {
 235         return inb(chip->codec_port + reg);
 236 }
 237
 238 static inline void
 239 snd_azf3328_codec_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 240 {
 241         outw(value, chip->codec_port + reg);
 242 }
 243
 244 static inline u16
 245 snd_azf3328_codec_inw(const struct snd_azf3328 *chip, int reg)
 246 {
 247         return inw(chip->codec_port + reg);
 248 }
 249
 250 static inline void
 251 snd_azf3328_codec_outl(const struct snd_azf3328 *chip, int reg, u32 value)
 252 {
 253         outl(value, chip->codec_port + reg);
 254 }
 255
 256 static inline void
 257 snd_azf3328_io2_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 258 {
 259         outb(value, chip->io2_port + reg);
 260 }
 261
 262 static inline u8
 263 snd_azf3328_io2_inb(const struct snd_azf3328 *chip, int reg)
 264 {
 265         return inb(chip->io2_port + reg);
 266 }
 267
 268 static inline void
 269 snd_azf3328_mixer_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 270 {
 271         outw(value, chip->mixer_port + reg);
 272 }
 273
 274 static inline u16
 275 snd_azf3328_mixer_inw(const struct snd_azf3328 *chip, int reg)
 276 {
 277         return inw(chip->mixer_port + reg);
 278 }
 279
 280 static void
 281 snd_azf3328_mixer_set_mute(const struct snd_azf3328 *chip, int reg, int do_mute)
 282 {
 283         unsigned long portbase = chip->mixer_port + reg + 1;
 284         unsigned char oldval;
 285
 286         /* the mute bit is on the *second* (i.e. right) register of a
 287          * left/right channel setting */
 288         oldval = inb(portbase);
 289         if (do_mute)
 290                 oldval |= 0x80;
 291         else
 292                 oldval &= ~0x80;
 293         outb(oldval, portbase);
 294 }
 295
 296 static void
 297 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)
 298 {
 299         unsigned long portbase = chip->mixer_port + reg;
 300         unsigned char curr_vol_left = 0, curr_vol_right = 0;
 301         int left_done = 0, right_done = 0;
 302
 303         snd_azf3328_dbgcallenter();
 304         if (chan_sel & SET_CHAN_LEFT)
 305                 curr_vol_left  = inb(portbase + 1);
 306         else
 307                 left_done = 1;
 308         if (chan_sel & SET_CHAN_RIGHT)
 309                 curr_vol_right = inb(portbase + 0);
 310         else
 311                 right_done = 1;
 312
 313         /* take care of muting flag (0x80) contained in left channel */
 314         if (curr_vol_left & 0x80)
 315                 dst_vol_left |= 0x80;
 316         else
 317                 dst_vol_left &= ~0x80;
 318
 319         do
 320         {
 321                 if (!left_done)
 322                 {
 323                         if (curr_vol_left > dst_vol_left)
 324                                 curr_vol_left--;
 325                         else
 326                         if (curr_vol_left < dst_vol_left)
 327                                 curr_vol_left++;
 328                         else
 329                             left_done = 1;
 330                         outb(curr_vol_left, portbase + 1);
 331                 }
 332                 if (!right_done)
 333                 {
 334                         if (curr_vol_right > dst_vol_right)
 335                                 curr_vol_right--;
 336                         else
 337                         if (curr_vol_right < dst_vol_right)
 338                                 curr_vol_right++;
 339                         else
 340                             right_done = 1;
 341                         /* during volume change, the right channel is crackling
 342                          * somewhat more than the left channel, unfortunately.
 343                          * This seems to be a hardware issue. */
 344                         outb(curr_vol_right, portbase + 0);
 345                 }
 346                 if (delay)
 347                         mdelay(delay);
 348         }
 349         while ((!left_done) || (!right_done));
 350         snd_azf3328_dbgcallleave();
 351 }
 352
 353 /*
 354  * general mixer element
 355  */
 356 struct azf3328_mixer_reg {
 357         unsigned int reg;
 358         unsigned int lchan_shift, rchan_shift;
 359         unsigned int mask;
 360         unsigned int invert: 1;
 361         unsigned int stereo: 1;
 362         unsigned int enum_c: 4;
 363 };
 364
 365 #define COMPOSE_MIXER_REG(reg,lchan_shift,rchan_shift,mask,invert,stereo,enum_c) \
 366  ((reg) | (lchan_shift << 8) | (rchan_shift << 12) | \
 367   (mask << 16) | \
 368   (invert << 24) | \
 369   (stereo << 25) | \
 370   (enum_c << 26))
 371
 372 static void snd_azf3328_mixer_reg_decode(struct azf3328_mixer_reg *r, unsigned long val)
 373 {
 374         r->reg = val & 0xff;
 375         r->lchan_shift = (val >> 8) & 0x0f;
 376         r->rchan_shift = (val >> 12) & 0x0f;
 377         r->mask = (val >> 16) & 0xff;
 378         r->invert = (val >> 24) & 1;
 379         r->stereo = (val >> 25) & 1;
 380         r->enum_c = (val >> 26) & 0x0f;
 381 }
 382
 383 /*
 384  * mixer switches/volumes
 385  */
 386
 387 #define AZF3328_MIXER_SWITCH(xname, reg, shift, invert) \
 388 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 389   .info = snd_azf3328_info_mixer, \
 390   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 391   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0x1, invert, 0, 0), \
 392 }
 393
 394 #define AZF3328_MIXER_VOL_STEREO(xname, reg, mask, invert) \
 395 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 396   .info = snd_azf3328_info_mixer, \
 397   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 398   .private_value = COMPOSE_MIXER_REG(reg, 8, 0, mask, invert, 1, 0), \
 399 }
 400
 401 #define AZF3328_MIXER_VOL_MONO(xname, reg, mask, is_right_chan) \
 402 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 403   .info = snd_azf3328_info_mixer, \
 404   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 405   .private_value = COMPOSE_MIXER_REG(reg, is_right_chan ? 0 : 8, 0, mask, 1, 0, 0), \
 406 }
 407
 408 #define AZF3328_MIXER_VOL_SPECIAL(xname, reg, mask, shift, invert) \
 409 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 410   .info = snd_azf3328_info_mixer, \
 411   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 412   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, mask, invert, 0, 0), \
 413 }
 414
 415 #define AZF3328_MIXER_ENUM(xname, reg, enum_c, shift) \
 416 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 417   .info = snd_azf3328_info_mixer_enum, \
 418   .get = snd_azf3328_get_mixer_enum, .put = snd_azf3328_put_mixer_enum, \
 419   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0, 0, 0, enum_c), \
 420 }
 421
 422 static int
 423 snd_azf3328_info_mixer(struct snd_kcontrol *kcontrol,
 424                        struct snd_ctl_elem_info *uinfo)
 425 {
 426         struct azf3328_mixer_reg reg;
 427
 428         snd_azf3328_dbgcallenter();
 429         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 430         uinfo->type = reg.mask == 1 ?
 431                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 432         uinfo->count = reg.stereo + 1;
 433         uinfo->value.integer.min = 0;
 434         uinfo->value.integer.max = reg.mask;
 435         snd_azf3328_dbgcallleave();
 436         return 0;
 437 }
 438
 439 static int
 440 snd_azf3328_get_mixer(struct snd_kcontrol *kcontrol,
 441                       struct snd_ctl_elem_value *ucontrol)
 442 {
 443         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 444         struct azf3328_mixer_reg reg;
 445         unsigned int oreg, val;
 446
 447         snd_azf3328_dbgcallenter();
 448         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 449
 450         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 451         val = (oreg >> reg.lchan_shift) & reg.mask;
 452         if (reg.invert)
 453                 val = reg.mask - val;
 454         ucontrol->value.integer.value[0] = val;
 455         if (reg.stereo) {
 456                 val = (oreg >> reg.rchan_shift) & reg.mask;
 457                 if (reg.invert)
 458                         val = reg.mask - val;
 459                 ucontrol->value.integer.value[1] = val;
 460         }
 461         snd_azf3328_dbgmixer("get: %02x is %04x -> vol %02lx|%02lx "
 462                              "(shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
 463                 reg.reg, oreg,
 464                 ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 465                 reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
 466         snd_azf3328_dbgcallleave();
 467         return 0;
 468 }
 469
 470 static int
 471 snd_azf3328_put_mixer(struct snd_kcontrol *kcontrol,
 472                       struct snd_ctl_elem_value *ucontrol)
 473 {
 474         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 475         struct azf3328_mixer_reg reg;
 476         unsigned int oreg, nreg, val;
 477
 478         snd_azf3328_dbgcallenter();
 479         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 480         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 481         val = ucontrol->value.integer.value[0] & reg.mask;
 482         if (reg.invert)
 483                 val = reg.mask - val;
 484         nreg = oreg & ~(reg.mask << reg.lchan_shift);
 485         nreg |= (val << reg.lchan_shift);
 486         if (reg.stereo) {
 487                 val = ucontrol->value.integer.value[1] & reg.mask;
 488                 if (reg.invert)
 489                         val = reg.mask - val;
 490                 nreg &= ~(reg.mask << reg.rchan_shift);
 491                 nreg |= (val << reg.rchan_shift);
 492         }
 493         if (reg.mask >= 0x07) /* it's a volume control, so better take care */
 494                 snd_azf3328_mixer_write_volume_gradually(
 495                         chip, reg.reg, nreg >> 8, nreg & 0xff,
 496                         /* just set both channels, doesn't matter */
 497                         SET_CHAN_LEFT|SET_CHAN_RIGHT,
 498                         0);
 499         else
 500                 snd_azf3328_mixer_outw(chip, reg.reg, nreg);
 501
 502         snd_azf3328_dbgmixer("put: %02x to %02lx|%02lx, "
 503                              "oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
 504                 reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 505                 oreg, reg.lchan_shift, reg.rchan_shift,
 506                 nreg, snd_azf3328_mixer_inw(chip, reg.reg));
 507         snd_azf3328_dbgcallleave();
 508         return (nreg != oreg);
 509 }
 510
 511 static int
 512 snd_azf3328_info_mixer_enum(struct snd_kcontrol *kcontrol,
 513                             struct snd_ctl_elem_info *uinfo)
 514 {
 515         static const char * const texts1[] = {
 516                 "ModemOut1", "ModemOut2"
 517         };
 518         static const char * const texts2[] = {
 519                 "MonoSelectSource1", "MonoSelectSource2"
 520         };
 521         static const char * const texts3[] = {
 522                 "Mic", "CD", "Video", "Aux",
 523                 "Line", "Mix", "Mix Mono", "Phone"
 524         };
 525         struct azf3328_mixer_reg reg;
 526
 527         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 528         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 529         uinfo->count = (reg.reg == IDX_MIXER_REC_SELECT) ? 2 : 1;
 530         uinfo->value.enumerated.items = reg.enum_c;
 531         if (uinfo->value.enumerated.item > reg.enum_c - 1U)
 532                 uinfo->value.enumerated.item = reg.enum_c - 1U;
 533         if (reg.reg == IDX_MIXER_ADVCTL2)
 534         {
 535                 if (reg.lchan_shift == 8) /* modem out sel */
 536                         strcpy(uinfo->value.enumerated.name, texts1[uinfo->value.enumerated.item]);
 537                 else /* mono sel source */
 538                         strcpy(uinfo->value.enumerated.name, texts2[uinfo->value.enumerated.item]);
 539         }
 540         else
 541                 strcpy(uinfo->value.enumerated.name, texts3[uinfo->value.enumerated.item]
 542 );
 543         return 0;
 544 }
 545
 546 static int
 547 snd_azf3328_get_mixer_enum(struct snd_kcontrol *kcontrol,
 548                            struct snd_ctl_elem_value *ucontrol)
 549 {
 550         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 551         struct azf3328_mixer_reg reg;
 552         unsigned short val;
 553
 554         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 555         val = snd_azf3328_mixer_inw(chip, reg.reg);
 556         if (reg.reg == IDX_MIXER_REC_SELECT)
 557         {
 558                 ucontrol->value.enumerated.item[0] = (val >> 8) & (reg.enum_c - 1);
 559                 ucontrol->value.enumerated.item[1] = (val >> 0) & (reg.enum_c - 1);
 560         }
 561         else
 562                 ucontrol->value.enumerated.item[0] = (val >> reg.lchan_shift) & (reg.enum_c - 1);
 563
 564         snd_azf3328_dbgmixer("get_enum: %02x is %04x -> %d|%d (shift %02d, enum_c %d)\n",
 565                 reg.reg, val, ucontrol->value.enumerated.item[0], ucontrol->value.enumerated.item[1],
 566                 reg.lchan_shift, reg.enum_c);
 567         return 0;
 568 }
 569
 570 static int
 571 snd_azf3328_put_mixer_enum(struct snd_kcontrol *kcontrol,
 572                            struct snd_ctl_elem_value *ucontrol)
 573 {
 574         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 575         struct azf3328_mixer_reg reg;
 576         unsigned int oreg, nreg, val;
 577
 578         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 579         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 580         val = oreg;
 581         if (reg.reg == IDX_MIXER_REC_SELECT)
 582         {
 583                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U ||
 584                 ucontrol->value.enumerated.item[1] > reg.enum_c - 1U)
 585                         return -EINVAL;
 586                 val = (ucontrol->value.enumerated.item[0] << 8) |
 587                       (ucontrol->value.enumerated.item[1] << 0);
 588         }
 589         else
 590         {
 591                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U)
 592                         return -EINVAL;
 593                 val &= ~((reg.enum_c - 1) << reg.lchan_shift);
 594                 val |= (ucontrol->value.enumerated.item[0] << reg.lchan_shift);
 595         }
 596         snd_azf3328_mixer_outw(chip, reg.reg, val);
 597         nreg = val;
 598
 599         snd_azf3328_dbgmixer("put_enum: %02x to %04x, oreg %04x\n", reg.reg, val, oreg);
 600         return (nreg != oreg);
 601 }
 602
 603 static const struct snd_kcontrol_new snd_azf3328_mixer_controls[] __devinitdata = {
 604         AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
 605         AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
 606         AZF3328_MIXER_SWITCH("Wave Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),
 607         AZF3328_MIXER_VOL_STEREO("Wave Playback Volume", IDX_MIXER_WAVEOUT, 0x1f, 1),
 608         AZF3328_MIXER_SWITCH("Wave 3D Bypass Playback Switch", IDX_MIXER_ADVCTL2, 7, 1),
 609         AZF3328_MIXER_SWITCH("FM Playback Switch", IDX_MIXER_FMSYNTH, 15, 1),
 610         AZF3328_MIXER_VOL_STEREO("FM Playback Volume", IDX_MIXER_FMSYNTH, 0x1f, 1),
 611         AZF3328_MIXER_SWITCH("CD Playback Switch", IDX_MIXER_CDAUDIO, 15, 1),
 612         AZF3328_MIXER_VOL_STEREO("CD Playback Volume", IDX_MIXER_CDAUDIO, 0x1f, 1),
 613         AZF3328_MIXER_SWITCH("Capture Switch", IDX_MIXER_REC_VOLUME, 15, 1),
 614         AZF3328_MIXER_VOL_STEREO("Capture Volume", IDX_MIXER_REC_VOLUME, 0x0f, 0),
 615         AZF3328_MIXER_ENUM("Capture Source", IDX_MIXER_REC_SELECT, 8, 0),
 616         AZF3328_MIXER_SWITCH("Mic Playback Switch", IDX_MIXER_MIC, 15, 1),
 617         AZF3328_MIXER_VOL_MONO("Mic Playback Volume", IDX_MIXER_MIC, 0x1f, 1),
 618         AZF3328_MIXER_SWITCH("Mic Boost (+20dB)", IDX_MIXER_MIC, 6, 0),
 619         AZF3328_MIXER_SWITCH("Line Playback Switch", IDX_MIXER_LINEIN, 15, 1),
 620         AZF3328_MIXER_VOL_STEREO("Line Playback Volume", IDX_MIXER_LINEIN, 0x1f, 1),
 621         AZF3328_MIXER_SWITCH("PC Speaker Playback Switch", IDX_MIXER_PCBEEP, 15, 1),
 622         AZF3328_MIXER_VOL_SPECIAL("PC Speaker Playback Volume", IDX_MIXER_PCBEEP, 0x0f, 1, 1),
 623         AZF3328_MIXER_SWITCH("Video Playback Switch", IDX_MIXER_VIDEO, 15, 1),
 624         AZF3328_MIXER_VOL_STEREO("Video Playback Volume", IDX_MIXER_VIDEO, 0x1f, 1),
 625         AZF3328_MIXER_SWITCH("Aux Playback Switch", IDX_MIXER_AUX, 15, 1),
 626         AZF3328_MIXER_VOL_STEREO("Aux Playback Volume", IDX_MIXER_AUX, 0x1f, 1),
 627         AZF3328_MIXER_SWITCH("Modem Playback Switch", IDX_MIXER_MODEMOUT, 15, 1),
 628         AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
 629         AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
 630         AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
 631         AZF3328_MIXER_ENUM("Modem Out Select", IDX_MIXER_ADVCTL2, 2, 8),
 632         AZF3328_MIXER_ENUM("Mono Select Source", IDX_MIXER_ADVCTL2, 2, 9),
 633         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
 634         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
 635         AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
 636         AZF3328_MIXER_VOL_SPECIAL("3D Control - Wide", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
 637         AZF3328_MIXER_VOL_SPECIAL("3D Control - Space", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
 638 #if MIXER_TESTING
 639         AZF3328_MIXER_SWITCH("0", IDX_MIXER_ADVCTL2, 0, 0),
 640         AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
 641         AZF3328_MIXER_SWITCH("2", IDX_MIXER_ADVCTL2, 2, 0),
 642         AZF3328_MIXER_SWITCH("3", IDX_MIXER_ADVCTL2, 3, 0),
 643         AZF3328_MIXER_SWITCH("4", IDX_MIXER_ADVCTL2, 4, 0),
 644         AZF3328_MIXER_SWITCH("5", IDX_MIXER_ADVCTL2, 5, 0),
 645         AZF3328_MIXER_SWITCH("6", IDX_MIXER_ADVCTL2, 6, 0),
 646         AZF3328_MIXER_SWITCH("7", IDX_MIXER_ADVCTL2, 7, 0),
 647         AZF3328_MIXER_SWITCH("8", IDX_MIXER_ADVCTL2, 8, 0),
 648         AZF3328_MIXER_SWITCH("9", IDX_MIXER_ADVCTL2, 9, 0),
 649         AZF3328_MIXER_SWITCH("10", IDX_MIXER_ADVCTL2, 10, 0),
 650         AZF3328_MIXER_SWITCH("11", IDX_MIXER_ADVCTL2, 11, 0),
 651         AZF3328_MIXER_SWITCH("12", IDX_MIXER_ADVCTL2, 12, 0),
 652         AZF3328_MIXER_SWITCH("13", IDX_MIXER_ADVCTL2, 13, 0),
 653         AZF3328_MIXER_SWITCH("14", IDX_MIXER_ADVCTL2, 14, 0),
 654         AZF3328_MIXER_SWITCH("15", IDX_MIXER_ADVCTL2, 15, 0),
 655 #endif
 656 };
 657
 658 static const u16 __devinitdata snd_azf3328_init_values[][2] = {
 659         { IDX_MIXER_PLAY_MASTER,        MIXER_MUTE_MASK|0x1f1f },
 660         { IDX_MIXER_MODEMOUT,           MIXER_MUTE_MASK|0x1f1f },
 661         { IDX_MIXER_BASSTREBLE,         0x0000 },
 662         { IDX_MIXER_PCBEEP,             MIXER_MUTE_MASK|0x1f1f },
 663         { IDX_MIXER_MODEMIN,            MIXER_MUTE_MASK|0x1f1f },
 664         { IDX_MIXER_MIC,                MIXER_MUTE_MASK|0x001f },
 665         { IDX_MIXER_LINEIN,             MIXER_MUTE_MASK|0x1f1f },
 666         { IDX_MIXER_CDAUDIO,            MIXER_MUTE_MASK|0x1f1f },
 667         { IDX_MIXER_VIDEO,              MIXER_MUTE_MASK|0x1f1f },
 668         { IDX_MIXER_AUX,                MIXER_MUTE_MASK|0x1f1f },
 669         { IDX_MIXER_WAVEOUT,            MIXER_MUTE_MASK|0x1f1f },
 670         { IDX_MIXER_FMSYNTH,            MIXER_MUTE_MASK|0x1f1f },
 671         { IDX_MIXER_REC_VOLUME,         MIXER_MUTE_MASK|0x0707 },
 672 };
 673
 674 static int __devinit
 675 snd_azf3328_mixer_new(struct snd_azf3328 *chip)
 676 {
 677         struct snd_card *card;
 678         const struct snd_kcontrol_new *sw;
 679         unsigned int idx;
 680         int err;
 681
 682         snd_azf3328_dbgcallenter();
 683         snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
 684
 685         card = chip->card;
 686
 687         /* mixer reset */
 688         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
 689
 690         /* mute and zero volume channels */
 691         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_init_values); idx++) {
 692                 snd_azf3328_mixer_outw(chip,
 693                         snd_azf3328_init_values[idx][0],
 694                         snd_azf3328_init_values[idx][1]);
 695         }
 696
 697         /* add mixer controls */
 698         sw = snd_azf3328_mixer_controls;
 699         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_mixer_controls); idx++, sw++) {
 700                 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(sw, chip))) < 0)
 701                         return err;
 702         }
 703         snd_component_add(card, "AZF3328 mixer");
 704         strcpy(card->mixername, "AZF3328 mixer");
 705
 706         snd_azf3328_dbgcallleave();
 707         return 0;
 708 }
 709
 710 static int
 711 snd_azf3328_hw_params(struct snd_pcm_substream *substream,
 712                                  struct snd_pcm_hw_params *hw_params)
 713 {
 714         int res;
 715         snd_azf3328_dbgcallenter();
 716         res = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 717         snd_azf3328_dbgcallleave();
 718         return res;
 719 }
 720
 721 static int
 722 snd_azf3328_hw_free(struct snd_pcm_substream *substream)
 723 {
 724         snd_azf3328_dbgcallenter();
 725         snd_pcm_lib_free_pages(substream);
 726         snd_azf3328_dbgcallleave();
 727         return 0;
 728 }
 729
 730 static void
 731 snd_azf3328_setfmt(struct snd_azf3328 *chip,
 732                                unsigned int reg,
 733                                unsigned int bitrate,
 734                                unsigned int format_width,
 735                                unsigned int channels
 736 )
 737 {
 738         u16 val = 0xff00;
 739         unsigned long flags;
 740
 741         snd_azf3328_dbgcallenter();
 742         switch (bitrate) {
 743         case  4000: val |= SOUNDFORMAT_FREQ_SUSPECTED_4000; break;
 744         case  4800: val |= SOUNDFORMAT_FREQ_SUSPECTED_4800; break;
 745         case  5512: val |= SOUNDFORMAT_FREQ_5510; break; /* the AZF3328 names it "5510" for some strange reason */
 746         case  6620: val |= SOUNDFORMAT_FREQ_6620; break;
 747         case  8000: val |= SOUNDFORMAT_FREQ_8000; break;
 748         case  9600: val |= SOUNDFORMAT_FREQ_9600; break;
 749         case 11025: val |= SOUNDFORMAT_FREQ_11025; break;
 750         case 13240: val |= SOUNDFORMAT_FREQ_SUSPECTED_13240; break;
 751         case 16000: val |= SOUNDFORMAT_FREQ_16000; break;
 752         case 22050: val |= SOUNDFORMAT_FREQ_22050; break;
 753         case 32000: val |= SOUNDFORMAT_FREQ_32000; break;
 754         case 44100: val |= SOUNDFORMAT_FREQ_44100; break;
 755         case 48000: val |= SOUNDFORMAT_FREQ_48000; break;
 756         case 66200: val |= SOUNDFORMAT_FREQ_SUSPECTED_66200; break;
 757         default:
 758                 snd_printk(KERN_WARNING "unknown bitrate %d, assuming 44.1kHz!\n", bitrate);
 759                 val |= SOUNDFORMAT_FREQ_44100;
 760                 break;
 761         }
 762         /* val = 0xff07; 3m27.993s (65301Hz; -> 64000Hz???) hmm, 66120, 65967, 66123 */
 763         /* val = 0xff09; 17m15.098s (13123,478Hz; -> 12000Hz???) hmm, 13237.2Hz? */
 764         /* val = 0xff0a; 47m30.599s (4764,891Hz; -> 4800Hz???) yup, 4803Hz */
 765         /* val = 0xff0c; 57m0.510s (4010,263Hz; -> 4000Hz???) yup, 4003Hz */
 766         /* val = 0xff05; 5m11.556s (... -> 44100Hz) */
 767         /* val = 0xff03; 10m21.529s (21872,463Hz; -> 22050Hz???) */
 768         /* val = 0xff0f; 20m41.883s (10937,993Hz; -> 11025Hz???) */
 769         /* val = 0xff0d; 41m23.135s (5523,600Hz; -> 5512Hz???) */
 770         /* val = 0xff0e; 28m30.777s (8017Hz; -> 8000Hz???) */
 771
 772         if (channels == 2)
 773                 val |= SOUNDFORMAT_FLAG_2CHANNELS;
 774
 775         if (format_width == 16)
 776                 val |= SOUNDFORMAT_FLAG_16BIT;
 777
 778         spin_lock_irqsave(&chip->reg_lock, flags);
 779
 780         /* set bitrate/format */
 781         snd_azf3328_codec_outw(chip, reg, val);
 782
 783         /* changing the bitrate/format settings switches off the
 784          * audio output with an annoying click in case of 8/16bit format change
 785          * (maybe shutting down DAC/ADC?), thus immediately
 786          * do some tweaking to reenable it and get rid of the clicking
 787          * (FIXME: yes, it works, but what exactly am I doing here?? :)
 788          * FIXME: does this have some side effects for full-duplex
 789          * or other dramatic side effects? */
 790         if (reg == IDX_IO_PLAY_SOUNDFORMAT) /* only do it for playback */
 791                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 792                         snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) |
 793                         DMA_PLAY_SOMETHING1 |
 794                         DMA_PLAY_SOMETHING2 |
 795                         SOMETHING_ALMOST_ALWAYS_SET |
 796                         DMA_EPILOGUE_SOMETHING |
 797                         DMA_SOMETHING_ELSE
 798                 );
 799
 800         spin_unlock_irqrestore(&chip->reg_lock, flags);
 801         snd_azf3328_dbgcallleave();
 802 }
 803
 804 static void
 805 snd_azf3328_setdmaa(struct snd_azf3328 *chip,
 806                                 long unsigned int addr,
 807                                 unsigned int count,
 808                                 unsigned int size,
 809                                 int do_recording)
 810 {
 811         unsigned long flags, portbase;
 812         unsigned int is_running;
 813
 814         snd_azf3328_dbgcallenter();
 815         if (do_recording)
 816         {
 817                 /* access capture registers, i.e. skip playback reg section */
 818                 portbase = chip->codec_port + 0x20;
 819                 is_running = chip->is_recording;
 820         }
 821         else
 822         {
 823                 /* access the playback register section */
 824                 portbase = chip->codec_port + 0x00;
 825                 is_running = chip->is_playing;
 826         }
 827
 828         /* AZF3328 uses a two buffer pointer DMA playback approach */
 829         if (!is_running)
 830         {
 831                 unsigned long addr_area2;
 832                 unsigned long count_areas, count_tmp; /* width 32bit -- overflow!! */
 833                 count_areas = size/2;
 834                 addr_area2 = addr+count_areas;
 835                 count_areas--; /* max. index */
 836                 snd_azf3328_dbgplay("set DMA: buf1 %08lx[%lu], buf2 %08lx[%lu]\n", addr, count_areas, addr_area2, count_areas);
 837
 838                 /* build combined I/O buffer length word */
 839                 count_tmp = count_areas;
 840                 count_areas |= (count_tmp << 16);
 841                 spin_lock_irqsave(&chip->reg_lock, flags);
 842                 outl(addr, portbase + IDX_IO_PLAY_DMA_START_1);
 843                 outl(addr_area2, portbase + IDX_IO_PLAY_DMA_START_2);
 844                 outl(count_areas, portbase + IDX_IO_PLAY_DMA_LEN_1);
 845                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 846         }
 847         snd_azf3328_dbgcallleave();
 848 }
 849
 850 static int
 851 snd_azf3328_playback_prepare(struct snd_pcm_substream *substream)
 852 {
 853 #if 0
 854         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 855         struct snd_pcm_runtime *runtime = substream->runtime;
 856         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 857         unsigned int count = snd_pcm_lib_period_bytes(substream);
 858 #endif
 859
 860         snd_azf3328_dbgcallenter();
 861 #if 0
 862         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 863                 runtime->rate,
 864                 snd_pcm_format_width(runtime->format),
 865                 runtime->channels);
 866         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 0);
 867 #endif
 868         snd_azf3328_dbgcallleave();
 869         return 0;
 870 }
 871
 872 static int
 873 snd_azf3328_capture_prepare(struct snd_pcm_substream *substream)
 874 {
 875 #if 0
 876         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 877         struct snd_pcm_runtime *runtime = substream->runtime;
 878         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 879         unsigned int count = snd_pcm_lib_period_bytes(substream);
 880 #endif
 881
 882         snd_azf3328_dbgcallenter();
 883 #if 0
 884         snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
 885                 runtime->rate,
 886                 snd_pcm_format_width(runtime->format),
 887                 runtime->channels);
 888         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 1);
 889 #endif
 890         snd_azf3328_dbgcallleave();
 891         return 0;
 892 }
 893
 894 static int
 895 snd_azf3328_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 896 {
 897         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 898         struct snd_pcm_runtime *runtime = substream->runtime;
 899         int result = 0;
 900         unsigned int status1;
 901
 902         snd_azf3328_dbgcalls("snd_azf3328_playback_trigger cmd %d\n", cmd);
 903
 904         switch (cmd) {
 905         case SNDRV_PCM_TRIGGER_START:
 906                 snd_azf3328_dbgplay("START PLAYBACK\n");
 907
 908                 /* mute WaveOut */
 909                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 910
 911                 snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 912                         runtime->rate,
 913                         snd_pcm_format_width(runtime->format),
 914                         runtime->channels);
 915
 916                 spin_lock(&chip->reg_lock);
 917                 /* stop playback */
 918                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 919                 status1 &= ~DMA_RESUME;
 920                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 921
 922                 /* FIXME: clear interrupts or what??? */
 923                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_IRQTYPE, 0xffff);
 924                 spin_unlock(&chip->reg_lock);
 925
 926                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
 927                         snd_pcm_lib_period_bytes(substream),
 928                         snd_pcm_lib_buffer_bytes(substream),
 929                         0);
 930
 931                 spin_lock(&chip->reg_lock);
 932 #ifdef WIN9X
 933                 /* FIXME: enable playback/recording??? */
 934                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
 935                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 936
 937                 /* start playback again */
 938                 /* FIXME: what is this value (0x0010)??? */
 939                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
 940                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 941 #else /* NT4 */
 942                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 943                         0x0000);
 944                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 945                         DMA_PLAY_SOMETHING1);
 946                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 947                         DMA_PLAY_SOMETHING1 |
 948                         DMA_PLAY_SOMETHING2);
 949                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 950                         DMA_RESUME |
 951                         SOMETHING_ALMOST_ALWAYS_SET |
 952                         DMA_EPILOGUE_SOMETHING |
 953                         DMA_SOMETHING_ELSE);
 954 #endif
 955                 spin_unlock(&chip->reg_lock);
 956
 957                 /* now unmute WaveOut */
 958                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 959
 960                 chip->is_playing = 1;
 961                 snd_azf3328_dbgplay("STARTED PLAYBACK\n");
 962                 break;
 963         case SNDRV_PCM_TRIGGER_STOP:
 964                 snd_azf3328_dbgplay("STOP PLAYBACK\n");
 965
 966                 /* mute WaveOut */
 967                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 968
 969                 spin_lock(&chip->reg_lock);
 970                 /* stop playback */
 971                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 972
 973                 status1 &= ~DMA_RESUME;
 974                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 975
 976                 /* hmm, is this really required? we're resetting the same bit
 977                  * immediately thereafter... */
 978                 status1 |= DMA_PLAY_SOMETHING1;
 979                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 980
 981                 status1 &= ~DMA_PLAY_SOMETHING1;
 982                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 983                 spin_unlock(&chip->reg_lock);
 984
 985                 /* now unmute WaveOut */
 986                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 987                 chip->is_playing = 0;
 988                 snd_azf3328_dbgplay("STOPPED PLAYBACK\n");
 989                 break;
 990         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 991                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
 992                 break;
 993         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 994                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
 995                 break;
 996         default:
 997                 return -EINVAL;
 998         }
 999
1000         snd_azf3328_dbgcallleave();
1001         return result;
1002 }
1003
1004 /* this is just analogous to playback; I'm not quite sure whether recording
1005  * should actually be triggered like that */
1006 static int
1007 snd_azf3328_capture_trigger(struct snd_pcm_substream *substream, int cmd)
1008 {
1009         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1010         struct snd_pcm_runtime *runtime = substream->runtime;
1011         int result = 0;
1012         unsigned int status1;
1013
1014         snd_azf3328_dbgcalls("snd_azf3328_capture_trigger cmd %d\n", cmd);
1015
1016         switch (cmd) {
1017         case SNDRV_PCM_TRIGGER_START:
1018
1019                 snd_azf3328_dbgplay("START CAPTURE\n");
1020
1021                 snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
1022                         runtime->rate,
1023                         snd_pcm_format_width(runtime->format),
1024                         runtime->channels);
1025
1026                 spin_lock(&chip->reg_lock);
1027                 /* stop recording */
1028                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1029                 status1 &= ~DMA_RESUME;
1030                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1031
1032                 /* FIXME: clear interrupts or what??? */
1033                 snd_azf3328_codec_outw(chip, IDX_IO_REC_IRQTYPE, 0xffff);
1034                 spin_unlock(&chip->reg_lock);
1035
1036                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
1037                         snd_pcm_lib_period_bytes(substream),
1038                         snd_pcm_lib_buffer_bytes(substream),
1039                         1);
1040
1041                 spin_lock(&chip->reg_lock);
1042 #ifdef WIN9X
1043                 /* FIXME: enable playback/recording??? */
1044                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
1045                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1046
1047                 /* start capture again */
1048                 /* FIXME: what is this value (0x0010)??? */
1049                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
1050                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1051 #else
1052                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1053                         0x0000);
1054                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1055                         DMA_PLAY_SOMETHING1);
1056                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1057                         DMA_PLAY_SOMETHING1 |
1058                         DMA_PLAY_SOMETHING2);
1059                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1060                         DMA_RESUME |
1061                         SOMETHING_ALMOST_ALWAYS_SET |
1062                         DMA_EPILOGUE_SOMETHING |
1063                         DMA_SOMETHING_ELSE);
1064 #endif
1065                 spin_unlock(&chip->reg_lock);
1066
1067                 chip->is_recording = 1;
1068                 snd_azf3328_dbgplay("STARTED CAPTURE\n");
1069                 break;
1070         case SNDRV_PCM_TRIGGER_STOP:
1071                 snd_azf3328_dbgplay("STOP CAPTURE\n");
1072
1073                 spin_lock(&chip->reg_lock);
1074                 /* stop recording */
1075                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1076
1077                 status1 &= ~DMA_RESUME;
1078                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1079
1080                 status1 |= DMA_PLAY_SOMETHING1;
1081                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1082
1083                 status1 &= ~DMA_PLAY_SOMETHING1;
1084                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1085                 spin_unlock(&chip->reg_lock);
1086
1087                 chip->is_recording = 0;
1088                 snd_azf3328_dbgplay("STOPPED CAPTURE\n");
1089                 break;
1090         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1091                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1092                 break;
1093         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1094                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1095                 break;
1096         default:
1097                 return -EINVAL;
1098         }
1099
1100         snd_azf3328_dbgcallleave();
1101         return result;
1102 }
1103
1104 static snd_pcm_uframes_t
1105 snd_azf3328_playback_pointer(struct snd_pcm_substream *substream)
1106 {
1107         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1108         unsigned long bufptr, result;
1109         snd_pcm_uframes_t frmres;
1110
1111 #ifdef QUERY_HARDWARE
1112         bufptr = inl(chip->codec_port+IDX_IO_PLAY_DMA_START_1);
1113 #else
1114         bufptr = substream->runtime->dma_addr;
1115 #endif
1116         result = inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS);
1117
1118         /* calculate offset */
1119         result -= bufptr;
1120         frmres = bytes_to_frames( substream->runtime, result);
1121         snd_azf3328_dbgplay("PLAY @ 0x%8lx, frames %8ld\n", result, frmres);
1122         return frmres;
1123 }
1124
1125 static snd_pcm_uframes_t
1126 snd_azf3328_capture_pointer(struct snd_pcm_substream *substream)
1127 {
1128         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1129         unsigned long bufptr, result;
1130         snd_pcm_uframes_t frmres;
1131
1132 #ifdef QUERY_HARDWARE
1133         bufptr = inl(chip->codec_port+IDX_IO_REC_DMA_START_1);
1134 #else
1135         bufptr = substream->runtime->dma_addr;
1136 #endif
1137         result = inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS);
1138
1139         /* calculate offset */
1140         result -= bufptr;
1141         frmres = bytes_to_frames( substream->runtime, result);
1142         snd_azf3328_dbgplay("REC  @ 0x%8lx, frames %8ld\n", result, frmres);
1143         return frmres;
1144 }
1145
1146 static irqreturn_t
1147 snd_azf3328_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1148 {
1149         struct snd_azf3328 *chip = dev_id;
1150         u8 status, which;
1151         static unsigned long irq_count;
1152
1153         status = snd_azf3328_codec_inb(chip, IDX_IO_IRQSTATUS);
1154
1155         /* fast path out, to ease interrupt sharing */
1156         if (!(status & (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_MPU401|IRQ_TIMER)))
1157                 return IRQ_NONE; /* must be interrupt for another device */
1158
1159         snd_azf3328_dbgplay("Interrupt %ld!\nIDX_IO_PLAY_FLAGS %04x, IDX_IO_PLAY_IRQTYPE %04x, IDX_IO_IRQSTATUS %04x\n",
1160                 irq_count,
1161                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS),
1162                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_IRQTYPE),
1163                 status);
1164
1165         if (status & IRQ_TIMER)
1166         {
1167                 /* snd_azf3328_dbgplay("timer %ld\n", inl(chip->codec_port+IDX_IO_TIMER_VALUE) & TIMER_VALUE_MASK); */
1168                 if (chip->timer)
1169                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1170                 /* ACK timer */
1171                 spin_lock(&chip->reg_lock);
1172                 snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x07);
1173                 spin_unlock(&chip->reg_lock);
1174                 snd_azf3328_dbgplay("azt3328: timer IRQ\n");
1175         }
1176         if (status & IRQ_PLAYBACK)
1177         {
1178                 spin_lock(&chip->reg_lock);
1179                 which = snd_azf3328_codec_inb(chip, IDX_IO_PLAY_IRQTYPE);
1180                 /* ack all IRQ types immediately */
1181                 snd_azf3328_codec_outb(chip, IDX_IO_PLAY_IRQTYPE, which);
1182                 spin_unlock(&chip->reg_lock);
1183
1184                 if (chip->pcm && chip->playback_substream)
1185                 {
1186                         snd_pcm_period_elapsed(chip->playback_substream);
1187                         snd_azf3328_dbgplay("PLAY period done (#%x), @ %x\n",
1188                                 which,
1189                                 inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS));
1190                 }
1191                 else
1192                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1193                 if (which & IRQ_PLAY_SOMETHING)
1194                         snd_azf3328_dbgplay("azt3328: unknown play IRQ type occurred, please report!\n");
1195         }
1196         if (status & IRQ_RECORDING)
1197         {
1198                 spin_lock(&chip->reg_lock);
1199                 which = snd_azf3328_codec_inb(chip, IDX_IO_REC_IRQTYPE);
1200                 /* ack all IRQ types immediately */
1201                 snd_azf3328_codec_outb(chip, IDX_IO_REC_IRQTYPE, which);
1202                 spin_unlock(&chip->reg_lock);
1203
1204                 if (chip->pcm && chip->capture_substream)
1205                 {
1206                         snd_pcm_period_elapsed(chip->capture_substream);
1207                         snd_azf3328_dbgplay("REC  period done (#%x), @ %x\n",
1208                                 which,
1209                                 inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS));
1210                 }
1211                 else
1212                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1213                 if (which & IRQ_REC_SOMETHING)
1214                         snd_azf3328_dbgplay("azt3328: unknown rec IRQ type occurred, please report!\n");
1215         }
1216         /* MPU401 has less critical IRQ requirements
1217          * than timer and playback/recording, right? */
1218         if (status & IRQ_MPU401)
1219         {
1220                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
1221
1222                 /* hmm, do we have to ack the IRQ here somehow?
1223                  * If so, then I don't know how... */
1224                 snd_azf3328_dbgplay("azt3328: MPU401 IRQ\n");
1225         }
1226         irq_count++;
1227         return IRQ_HANDLED;
1228 }
1229
1230 /*****************************************************************/
1231
1232 static const struct snd_pcm_hardware snd_azf3328_playback =
1233 {
1234         /* FIXME!! Correct? */
1235         .info =                 SNDRV_PCM_INFO_MMAP |
1236                                 SNDRV_PCM_INFO_INTERLEAVED |
1237                                 SNDRV_PCM_INFO_MMAP_VALID,
1238         .formats =              SNDRV_PCM_FMTBIT_S8 |
1239                                 SNDRV_PCM_FMTBIT_U8 |
1240                                 SNDRV_PCM_FMTBIT_S16_LE |
1241                                 SNDRV_PCM_FMTBIT_U16_LE,
1242         .rates =                SNDRV_PCM_RATE_5512 |
1243                                 SNDRV_PCM_RATE_8000_48000 |
1244                                 SNDRV_PCM_RATE_KNOT,
1245         .rate_min =             4000,
1246         .rate_max =             66200,
1247         .channels_min =         1,
1248         .channels_max =         2,
1249         .buffer_bytes_max =     65536,
1250         .period_bytes_min =     64,
1251         .period_bytes_max =     65536,
1252         .periods_min =          1,
1253         .periods_max =          1024,
1254         /* FIXME: maybe that card actually has a FIFO?
1255          * Hmm, it seems newer revisions do have one, but we still don't know
1256          * its size... */
1257         .fifo_size =            0,
1258 };
1259
1260 static const struct snd_pcm_hardware snd_azf3328_capture =
1261 {
1262         /* FIXME */
1263         .info =                 SNDRV_PCM_INFO_MMAP |
1264                                 SNDRV_PCM_INFO_INTERLEAVED |
1265                                 SNDRV_PCM_INFO_MMAP_VALID,
1266         .formats =              SNDRV_PCM_FMTBIT_S8 |
1267                                 SNDRV_PCM_FMTBIT_U8 |
1268                                 SNDRV_PCM_FMTBIT_S16_LE |
1269                                 SNDRV_PCM_FMTBIT_U16_LE,
1270         .rates =                SNDRV_PCM_RATE_5512 |
1271                                 SNDRV_PCM_RATE_8000_48000 |
1272                                 SNDRV_PCM_RATE_KNOT,
1273         .rate_min =             4000,
1274         .rate_max =             66200,
1275         .channels_min =         1,
1276         .channels_max =         2,
1277         .buffer_bytes_max =     65536,
1278         .period_bytes_min =     64,
1279         .period_bytes_max =     65536,
1280         .periods_min =          1,
1281         .periods_max =          1024,
1282         .fifo_size =            0,
1283 };
1284
1285
1286 static unsigned int snd_azf3328_fixed_rates[] = {
1287         4000, 4800, 5512, 6620, 8000, 9600, 11025, 13240, 16000, 22050, 32000,
1288         44100, 48000, 66200 };
1289 static struct snd_pcm_hw_constraint_list snd_azf3328_hw_constraints_rates = {
1290         .count = ARRAY_SIZE(snd_azf3328_fixed_rates),
1291         .list = snd_azf3328_fixed_rates,
1292         .mask = 0,
1293 };
1294
1295 /*****************************************************************/
1296
1297 static int
1298 snd_azf3328_playback_open(struct snd_pcm_substream *substream)
1299 {
1300         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1301         struct snd_pcm_runtime *runtime = substream->runtime;
1302
1303         snd_azf3328_dbgcallenter();
1304         chip->playback_substream = substream;
1305         runtime->hw = snd_azf3328_playback;
1306         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1307                                    &snd_azf3328_hw_constraints_rates);
1308         snd_azf3328_dbgcallleave();
1309         return 0;
1310 }
1311
1312 static int
1313 snd_azf3328_capture_open(struct snd_pcm_substream *substream)
1314 {
1315         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1316         struct snd_pcm_runtime *runtime = substream->runtime;
1317
1318         snd_azf3328_dbgcallenter();
1319         chip->capture_substream = substream;
1320         runtime->hw = snd_azf3328_capture;
1321         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1322                                    &snd_azf3328_hw_constraints_rates);
1323         snd_azf3328_dbgcallleave();
1324         return 0;
1325 }
1326
1327 static int
1328 snd_azf3328_playback_close(struct snd_pcm_substream *substream)
1329 {
1330         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1331
1332         snd_azf3328_dbgcallenter();
1333
1334         chip->playback_substream = NULL;
1335         snd_azf3328_dbgcallleave();
1336         return 0;
1337 }
1338
1339 static int
1340 snd_azf3328_capture_close(struct snd_pcm_substream *substream)
1341 {
1342         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1343
1344         snd_azf3328_dbgcallenter();
1345         chip->capture_substream = NULL;
1346         snd_azf3328_dbgcallleave();
1347         return 0;
1348 }
1349
1350 /******************************************************************/
1351
1352 static struct snd_pcm_ops snd_azf3328_playback_ops = {
1353         .open =         snd_azf3328_playback_open,
1354         .close =        snd_azf3328_playback_close,
1355         .ioctl =        snd_pcm_lib_ioctl,
1356         .hw_params =    snd_azf3328_hw_params,
1357         .hw_free =      snd_azf3328_hw_free,
1358         .prepare =      snd_azf3328_playback_prepare,
1359         .trigger =      snd_azf3328_playback_trigger,
1360         .pointer =      snd_azf3328_playback_pointer
1361 };
1362
1363 static struct snd_pcm_ops snd_azf3328_capture_ops = {
1364         .open =         snd_azf3328_capture_open,
1365         .close =        snd_azf3328_capture_close,
1366         .ioctl =        snd_pcm_lib_ioctl,
1367         .hw_params =    snd_azf3328_hw_params,
1368         .hw_free =      snd_azf3328_hw_free,
1369         .prepare =      snd_azf3328_capture_prepare,
1370         .trigger =      snd_azf3328_capture_trigger,
1371         .pointer =      snd_azf3328_capture_pointer
1372 };
1373
1374 static int __devinit
1375 snd_azf3328_pcm(struct snd_azf3328 *chip, int device)
1376 {
1377         struct snd_pcm *pcm;
1378         int err;
1379
1380         snd_azf3328_dbgcallenter();
1381         if ((err = snd_pcm_new(chip->card, "AZF3328 DSP", device, 1, 1, &pcm)) < 0)
1382                 return err;
1383         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_azf3328_playback_ops);
1384         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_azf3328_capture_ops);
1385
1386         pcm->private_data = chip;
1387         pcm->info_flags = 0;
1388         strcpy(pcm->name, chip->card->shortname);
1389         chip->pcm = pcm;
1390
1391         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1392                                               snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1393
1394         snd_azf3328_dbgcallleave();
1395         return 0;
1396 }
1397
1398 /******************************************************************/
1399
1400 #ifdef SUPPORT_JOYSTICK
1401 static int __devinit
1402 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev)
1403 {
1404         struct gameport *gp;
1405         struct resource *r;
1406
1407         if (!joystick[dev])
1408                 return -ENODEV;
1409
1410         if (!(r = request_region(0x200, 8, "AZF3328 gameport"))) {
1411                 printk(KERN_WARNING "azt3328: cannot reserve joystick ports\n");
1412                 return -EBUSY;
1413         }
1414
1415         chip->gameport = gp = gameport_allocate_port();
1416         if (!gp) {
1417                 printk(KERN_ERR "azt3328: cannot allocate memory for gameport\n");
1418                 release_and_free_resource(r);
1419                 return -ENOMEM;
1420         }
1421
1422         gameport_set_name(gp, "AZF3328 Gameport");
1423         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1424         gameport_set_dev_parent(gp, &chip->pci->dev);
1425         gp->io = 0x200;
1426         gameport_set_port_data(gp, r);
1427
1428         snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1429                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) | LEGACY_JOY);
1430
1431         gameport_register_port(chip->gameport);
1432
1433         return 0;
1434 }
1435
1436 static void
1437 snd_azf3328_free_joystick(struct snd_azf3328 *chip)
1438 {
1439         if (chip->gameport) {
1440                 struct resource *r = gameport_get_port_data(chip->gameport);
1441
1442                 gameport_unregister_port(chip->gameport);
1443                 chip->gameport = NULL;
1444                 /* disable gameport */
1445                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1446                                       snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1447                 release_and_free_resource(r);
1448         }
1449 }
1450 #else
1451 static inline int
1452 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev) { return -ENOSYS; }
1453 static inline void
1454 snd_azf3328_free_joystick(struct snd_azf3328 *chip) { }
1455 #endif
1456
1457 /******************************************************************/
1458
1459 static int
1460 snd_azf3328_free(struct snd_azf3328 *chip)
1461 {
1462         if (chip->irq < 0)
1463                 goto __end_hw;
1464
1465         /* reset (close) mixer */
1466         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1); /* first mute master volume */
1467         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
1468
1469         /* interrupt setup - mask everything (FIXME!) */
1470         /* well, at least we know how to disable the timer IRQ */
1471         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00);
1472
1473         synchronize_irq(chip->irq);
1474 __end_hw:
1475         snd_azf3328_free_joystick(chip);
1476         if (chip->irq >= 0)
1477                 free_irq(chip->irq, (void *)chip);
1478         pci_release_regions(chip->pci);
1479         pci_disable_device(chip->pci);
1480
1481         kfree(chip);
1482         return 0;
1483 }
1484
1485 static int
1486 snd_azf3328_dev_free(struct snd_device *device)
1487 {
1488         struct snd_azf3328 *chip = device->device_data;
1489         return snd_azf3328_free(chip);
1490 }
1491
1492 /******************************************************************/
1493
1494 /*** NOTE: the physical timer resolution actually is 1024000 ticks per second,
1495  *** but announcing those attributes to user-space would make programs
1496  *** configure the timer to a 1 tick value, resulting in an absolutely fatal
1497  *** timer IRQ storm.
1498  *** Thus I chose to announce a down-scaled virtual timer to the outside and
1499  *** calculate real timer countdown values internally.
1500  *** (the scale factor can be set via module parameter "seqtimer_scaling").
1501  ***/
1502
1503 static int
1504 snd_azf3328_timer_start(struct snd_timer *timer)
1505 {
1506         struct snd_azf3328 *chip;
1507         unsigned long flags;
1508         unsigned int delay;
1509
1510         snd_azf3328_dbgcallenter();
1511         chip = snd_timer_chip(timer);
1512         delay = ((timer->sticks * seqtimer_scaling) - 1) & TIMER_VALUE_MASK;
1513         if (delay < 49)
1514         {
1515                 /* uhoh, that's not good, since user-space won't know about
1516                  * this timing tweak
1517                  * (we need to do it to avoid a lockup, though) */
1518
1519                 snd_azf3328_dbgtimer("delay was too low (%d)!\n", delay);
1520                 delay = 49; /* minimum time is 49 ticks */
1521         }
1522         snd_azf3328_dbgtimer("setting timer countdown value %d, add COUNTDOWN|IRQ\n", delay);
1523         delay |= TIMER_ENABLE_COUNTDOWN | TIMER_ENABLE_IRQ;
1524         spin_lock_irqsave(&chip->reg_lock, flags);
1525         snd_azf3328_codec_outl(chip, IDX_IO_TIMER_VALUE, delay);
1526         spin_unlock_irqrestore(&chip->reg_lock, flags);
1527         snd_azf3328_dbgcallleave();
1528         return 0;
1529 }
1530
1531 static int
1532 snd_azf3328_timer_stop(struct snd_timer *timer)
1533 {
1534         struct snd_azf3328 *chip;
1535         unsigned long flags;
1536
1537         snd_azf3328_dbgcallenter();
1538         chip = snd_timer_chip(timer);
1539         spin_lock_irqsave(&chip->reg_lock, flags);
1540         /* disable timer countdown and interrupt */
1541         /* FIXME: should we write TIMER_ACK_IRQ here? */
1542         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0);
1543         spin_unlock_irqrestore(&chip->reg_lock, flags);
1544         snd_azf3328_dbgcallleave();
1545         return 0;
1546 }
1547
1548
1549 static int
1550 snd_azf3328_timer_precise_resolution(struct snd_timer *timer,
1551                                                unsigned long *num, unsigned long *den)
1552 {
1553         snd_azf3328_dbgcallenter();
1554         *num = 1;
1555         *den = 1024000 / seqtimer_scaling;
1556         snd_azf3328_dbgcallleave();
1557         return 0;
1558 }
1559
1560 static struct snd_timer_hardware snd_azf3328_timer_hw = {
1561         .flags = SNDRV_TIMER_HW_AUTO,
1562         .resolution = 977, /* 1000000/1024000 = 0.9765625us */
1563         .ticks = 1024000, /* max tick count, defined by the value register; actually it's not 1024000, but 1048576, but we don't care */
1564         .start = snd_azf3328_timer_start,
1565         .stop = snd_azf3328_timer_stop,
1566         .precise_resolution = snd_azf3328_timer_precise_resolution,
1567 };
1568
1569 static int __devinit
1570 snd_azf3328_timer(struct snd_azf3328 *chip, int device)
1571 {
1572         struct snd_timer *timer = NULL;
1573         struct snd_timer_id tid;
1574         int err;
1575
1576         snd_azf3328_dbgcallenter();
1577         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1578         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1579         tid.card = chip->card->number;
1580         tid.device = device;
1581         tid.subdevice = 0;
1582
1583         snd_azf3328_timer_hw.resolution *= seqtimer_scaling;
1584         snd_azf3328_timer_hw.ticks /= seqtimer_scaling;
1585         if ((err = snd_timer_new(chip->card, "AZF3328", &tid, &timer)) < 0) {
1586                 goto out;
1587         }
1588
1589         strcpy(timer->name, "AZF3328 timer");
1590         timer->private_data = chip;
1591         timer->hw = snd_azf3328_timer_hw;
1592
1593         chip->timer = timer;
1594
1595         err = 0;
1596
1597 out:
1598         snd_azf3328_dbgcallleave();
1599         return err;
1600 }
1601
1602 /******************************************************************/
1603
1604 #if 0
1605 /* check whether a bit can be modified */
1606 static void
1607 snd_azf3328_test_bit(unsigned int reg, int bit)
1608 {
1609         unsigned char val, valoff, valon;
1610
1611         val = inb(reg);
1612
1613         outb(val & ~(1 << bit), reg);
1614         valoff = inb(reg);
1615
1616         outb(val|(1 << bit), reg);
1617         valon = inb(reg);
1618
1619         outb(val, reg);
1620
1621         printk(KERN_ERR "reg %04x bit %d: %02x %02x %02x\n", reg, bit, val, valoff, valon);
1622 }
1623 #endif
1624
1625 static void
1626 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip)
1627 {
1628 #if DEBUG_MISC
1629         u16 tmp;
1630
1631         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);
1632
1633         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));
1634
1635         for (tmp=0; tmp <= 0x01; tmp += 1)
1636                 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));
1637
1638         for (tmp = 0; tmp <= 0x6E; tmp += 2)
1639                 snd_azf3328_dbgmisc("0x%02x: 0x%04x\n", tmp, snd_azf3328_codec_inb(chip, tmp));
1640 #endif
1641 }
1642
1643 static int __devinit
1644 snd_azf3328_create(struct snd_card *card,
1645                                          struct pci_dev *pci,
1646                                          unsigned long device_type,
1647                                          struct snd_azf3328 ** rchip)
1648 {
1649         struct snd_azf3328 *chip;
1650         int err;
1651         static struct snd_device_ops ops = {
1652                 .dev_free =     snd_azf3328_dev_free,
1653         };
1654         u16 tmp;
1655
1656         *rchip = NULL;
1657
1658         if ((err = pci_enable_device(pci)) < 0)
1659                 return err;
1660
1661         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1662         if (chip == NULL) {
1663                 err = -ENOMEM;
1664                 goto out_err;
1665         }
1666         spin_lock_init(&chip->reg_lock);
1667         chip->card = card;
1668         chip->pci = pci;
1669         chip->irq = -1;
1670
1671         /* check if we can restrict PCI DMA transfers to 24 bits */
1672         if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
1673             pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
1674                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
1675                 err = -ENXIO;
1676                 goto out_err;
1677         }
1678
1679         if ((err = pci_request_regions(pci, "Aztech AZF3328")) < 0) {
1680                 goto out_err;
1681         }
1682
1683         chip->codec_port = pci_resource_start(pci, 0);
1684         chip->io2_port   = pci_resource_start(pci, 1);
1685         chip->mpu_port   = pci_resource_start(pci, 2);
1686         chip->synth_port = pci_resource_start(pci, 3);
1687         chip->mixer_port = pci_resource_start(pci, 4);
1688
1689         if (request_irq(pci->irq, snd_azf3328_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
1690                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1691                 err = -EBUSY;
1692                 goto out_err;
1693         }
1694         chip->irq = pci->irq;
1695         pci_set_master(pci);
1696         synchronize_irq(chip->irq);
1697
1698         snd_azf3328_debug_show_ports(chip);
1699
1700         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1701                 goto out_err;
1702         }
1703
1704         /* create mixer interface & switches */
1705         if ((err = snd_azf3328_mixer_new(chip)) < 0)
1706                 goto out_err;
1707
1708 #if 0
1709         /* set very low bitrate to reduce noise and power consumption? */
1710         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT, 5512, 8, 1);
1711 #endif
1712
1713         /* standard chip init stuff */
1714         /* default IRQ init value */
1715         tmp = DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE;
1716
1717         spin_lock_irq(&chip->reg_lock);
1718         snd_azf3328_codec_outb(chip, IDX_IO_PLAY_FLAGS, tmp);
1719         snd_azf3328_codec_outb(chip, IDX_IO_REC_FLAGS, tmp);
1720         snd_azf3328_codec_outb(chip, IDX_IO_SOMETHING_FLAGS, tmp);
1721         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00); /* disable timer */
1722         spin_unlock_irq(&chip->reg_lock);
1723
1724         snd_card_set_dev(card, &pci->dev);
1725
1726         *rchip = chip;
1727
1728         err = 0;
1729         goto out;
1730
1731 out_err:
1732         if (chip)
1733                 snd_azf3328_free(chip);
1734         pci_disable_device(pci);
1735
1736 out:
1737         return err;
1738 }
1739
1740 static int __devinit
1741 snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
1742 {
1743         static int dev;
1744         struct snd_card *card;
1745         struct snd_azf3328 *chip;
1746         struct snd_opl3 *opl3;
1747         int err;
1748
1749         snd_azf3328_dbgcallenter();
1750         if (dev >= SNDRV_CARDS)
1751                 return -ENODEV;
1752         if (!enable[dev]) {
1753                 dev++;
1754                 return -ENOENT;
1755         }
1756
1757         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0 );
1758         if (card == NULL)
1759                 return -ENOMEM;
1760
1761         strcpy(card->driver, "AZF3328");
1762         strcpy(card->shortname, "Aztech AZF3328 (PCI168)");
1763
1764         if ((err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1765                 goto out_err;
1766         }
1767
1768         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_MPU401,
1769                                         chip->mpu_port, 1, pci->irq, 0,
1770                                         &chip->rmidi)) < 0) {
1771                 snd_printk(KERN_ERR "azf3328: no MPU-401 device at 0x%lx?\n", chip->mpu_port);
1772                 goto out_err;
1773         }
1774
1775         if ((err = snd_azf3328_timer(chip, 0)) < 0) {
1776                 goto out_err;
1777         }
1778
1779         if ((err = snd_azf3328_pcm(chip, 0)) < 0) {
1780                 goto out_err;
1781         }
1782
1783         if (snd_opl3_create(card, chip->synth_port, chip->synth_port+2,
1784                             OPL3_HW_AUTO, 1, &opl3) < 0) {
1785                 snd_printk(KERN_ERR "azf3328: no OPL3 device at 0x%lx-0x%lx?\n",
1786                            chip->synth_port, chip->synth_port+2 );
1787         } else {
1788                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1789                         goto out_err;
1790                 }
1791         }
1792
1793         sprintf(card->longname, "%s at 0x%lx, irq %i",
1794                 card->shortname, chip->codec_port, chip->irq);
1795
1796         if ((err = snd_card_register(card)) < 0) {
1797                 goto out_err;
1798         }
1799
1800 #ifdef MODULE
1801         printk(
1802 "azt3328: Sound driver for Aztech AZF3328-based soundcards such as PCI168\n"
1803 "azt3328: (hardware was completely undocumented - ZERO support from Aztech).\n"
1804 "azt3328: Feel free to contact andi AT lisas.de for bug reports etc.!\n"
1805 "azt3328: User-scalable sequencer timer set to %dHz (1024000Hz / %d).\n",
1806         1024000 / seqtimer_scaling, seqtimer_scaling);
1807 #endif
1808
1809         if (snd_azf3328_config_joystick(chip, dev) < 0)
1810                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1811                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1812
1813         pci_set_drvdata(pci, card);
1814         dev++;
1815
1816         err = 0;
1817         goto out;
1818
1819 out_err:
1820         snd_card_free(card);
1821
1822 out:
1823         snd_azf3328_dbgcallleave();
1824         return err;
1825 }
1826
1827 static void __devexit
1828 snd_azf3328_remove(struct pci_dev *pci)
1829 {
1830         snd_azf3328_dbgcallenter();
1831         snd_card_free(pci_get_drvdata(pci));
1832         pci_set_drvdata(pci, NULL);
1833         snd_azf3328_dbgcallleave();
1834 }
1835
1836 static struct pci_driver driver = {
1837         .name = "AZF3328",
1838         .id_table = snd_azf3328_ids,
1839         .probe = snd_azf3328_probe,
1840         .remove = __devexit_p(snd_azf3328_remove),
1841 };
1842
1843 static int __init
1844 alsa_card_azf3328_init(void)
1845 {
1846         int err;
1847         snd_azf3328_dbgcallenter();
1848         err = pci_register_driver(&driver);
1849         snd_azf3328_dbgcallleave();
1850         return err;
1851 }
1852
1853 static void __exit
1854 alsa_card_azf3328_exit(void)
1855 {
1856         snd_azf3328_dbgcallenter();
1857         pci_unregister_driver(&driver);
1858         snd_azf3328_dbgcallleave();
1859 }
1860
1861 module_init(alsa_card_azf3328_init)
1862 module_exit(alsa_card_azf3328_exit)