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   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 typedef 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         snd_timer_t *timer;
 200
 201         snd_pcm_t *pcm;
 202         snd_pcm_substream_t *playback_substream;
 203         snd_pcm_substream_t *capture_substream;
 204         unsigned int is_playing;
 205         unsigned int is_recording;
 206
 207         snd_card_t *card;
 208         snd_rawmidi_t *rmidi;
 209
 210 #ifdef SUPPORT_JOYSTICK
 211         struct gameport *gameport;
 212 #endif
 213
 214         struct pci_dev *pci;
 215         int irq;
 216 } azf3328_t;
 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 azf3328_t *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 azf3328_t *chip, int reg)
 234 {
 235         return inb(chip->codec_port + reg);
 236 }
 237
 238 static inline void
 239 snd_azf3328_codec_outw(const azf3328_t *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 azf3328_t *chip, int reg)
 246 {
 247         return inw(chip->codec_port + reg);
 248 }
 249
 250 static inline void
 251 snd_azf3328_codec_outl(const azf3328_t *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 azf3328_t *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 azf3328_t *chip, int reg)
 264 {
 265         return inb(chip->io2_port + reg);
 266 }
 267
 268 static inline void
 269 snd_azf3328_mixer_outw(const azf3328_t *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 azf3328_t *chip, int reg)
 276 {
 277         return inw(chip->mixer_port + reg);
 278 }
 279
 280 static void
 281 snd_azf3328_mixer_set_mute(const azf3328_t *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 azf3328_t *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 typedef 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 } azf3328_mixer_reg_t;
 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(azf3328_mixer_reg_t *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(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
 424 {
 425         azf3328_mixer_reg_t reg;
 426
 427         snd_azf3328_dbgcallenter();
 428         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 429         uinfo->type = reg.mask == 1 ?
 430                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 431         uinfo->count = reg.stereo + 1;
 432         uinfo->value.integer.min = 0;
 433         uinfo->value.integer.max = reg.mask;
 434         snd_azf3328_dbgcallleave();
 435         return 0;
 436 }
 437
 438 static int
 439 snd_azf3328_get_mixer(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 440 {
 441         azf3328_t *chip = snd_kcontrol_chip(kcontrol);
 442         azf3328_mixer_reg_t reg;
 443         unsigned int oreg, val;
 444
 445         snd_azf3328_dbgcallenter();
 446         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 447
 448         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 449         val = (oreg >> reg.lchan_shift) & reg.mask;
 450         if (reg.invert)
 451                 val = reg.mask - val;
 452         ucontrol->value.integer.value[0] = val;
 453         if (reg.stereo) {
 454                 val = (oreg >> reg.rchan_shift) & reg.mask;
 455                 if (reg.invert)
 456                         val = reg.mask - val;
 457                 ucontrol->value.integer.value[1] = val;
 458         }
 459         snd_azf3328_dbgmixer("get: %02x is %04x -> vol %02lx|%02lx "
 460                              "(shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
 461                 reg.reg, oreg,
 462                 ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 463                 reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
 464         snd_azf3328_dbgcallleave();
 465         return 0;
 466 }
 467
 468 static int
 469 snd_azf3328_put_mixer(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 470 {
 471         azf3328_t *chip = snd_kcontrol_chip(kcontrol);
 472         azf3328_mixer_reg_t reg;
 473         unsigned int oreg, nreg, val;
 474
 475         snd_azf3328_dbgcallenter();
 476         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 477         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 478         val = ucontrol->value.integer.value[0] & reg.mask;
 479         if (reg.invert)
 480                 val = reg.mask - val;
 481         nreg = oreg & ~(reg.mask << reg.lchan_shift);
 482         nreg |= (val << reg.lchan_shift);
 483         if (reg.stereo) {
 484                 val = ucontrol->value.integer.value[1] & reg.mask;
 485                 if (reg.invert)
 486                         val = reg.mask - val;
 487                 nreg &= ~(reg.mask << reg.rchan_shift);
 488                 nreg |= (val << reg.rchan_shift);
 489         }
 490         if (reg.mask >= 0x07) /* it's a volume control, so better take care */
 491                 snd_azf3328_mixer_write_volume_gradually(
 492                         chip, reg.reg, nreg >> 8, nreg & 0xff,
 493                         /* just set both channels, doesn't matter */
 494                         SET_CHAN_LEFT|SET_CHAN_RIGHT,
 495                         0);
 496         else
 497                 snd_azf3328_mixer_outw(chip, reg.reg, nreg);
 498
 499         snd_azf3328_dbgmixer("put: %02x to %02lx|%02lx, "
 500                              "oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
 501                 reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 502                 oreg, reg.lchan_shift, reg.rchan_shift,
 503                 nreg, snd_azf3328_mixer_inw(chip, reg.reg));
 504         snd_azf3328_dbgcallleave();
 505         return (nreg != oreg);
 506 }
 507
 508 static int
 509 snd_azf3328_info_mixer_enum(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 510 {
 511         static const char * const texts1[] = {
 512                 "ModemOut1", "ModemOut2"
 513         };
 514         static const char * const texts2[] = {
 515                 "MonoSelectSource1", "MonoSelectSource2"
 516         };
 517         static const char * const texts3[] = {
 518                 "Mic", "CD", "Video", "Aux",
 519                 "Line", "Mix", "Mix Mono", "Phone"
 520         };
 521         azf3328_mixer_reg_t reg;
 522
 523         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 524         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 525         uinfo->count = (reg.reg == IDX_MIXER_REC_SELECT) ? 2 : 1;
 526         uinfo->value.enumerated.items = reg.enum_c;
 527         if (uinfo->value.enumerated.item > reg.enum_c - 1U)
 528                 uinfo->value.enumerated.item = reg.enum_c - 1U;
 529         if (reg.reg == IDX_MIXER_ADVCTL2)
 530         {
 531                 if (reg.lchan_shift == 8) /* modem out sel */
 532                         strcpy(uinfo->value.enumerated.name, texts1[uinfo->value.enumerated.item]);
 533                 else /* mono sel source */
 534                         strcpy(uinfo->value.enumerated.name, texts2[uinfo->value.enumerated.item]);
 535         }
 536         else
 537                 strcpy(uinfo->value.enumerated.name, texts3[uinfo->value.enumerated.item]
 538 );
 539         return 0;
 540 }
 541
 542 static int
 543 snd_azf3328_get_mixer_enum(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 544 {
 545         azf3328_t *chip = snd_kcontrol_chip(kcontrol);
 546         azf3328_mixer_reg_t reg;
 547         unsigned short val;
 548
 549         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 550         val = snd_azf3328_mixer_inw(chip, reg.reg);
 551         if (reg.reg == IDX_MIXER_REC_SELECT)
 552         {
 553                 ucontrol->value.enumerated.item[0] = (val >> 8) & (reg.enum_c - 1);
 554                 ucontrol->value.enumerated.item[1] = (val >> 0) & (reg.enum_c - 1);
 555         }
 556         else
 557                 ucontrol->value.enumerated.item[0] = (val >> reg.lchan_shift) & (reg.enum_c - 1);
 558
 559         snd_azf3328_dbgmixer("get_enum: %02x is %04x -> %d|%d (shift %02d, enum_c %d)\n",
 560                 reg.reg, val, ucontrol->value.enumerated.item[0], ucontrol->value.enumerated.item[1],
 561                 reg.lchan_shift, reg.enum_c);
 562         return 0;
 563 }
 564
 565 static int
 566 snd_azf3328_put_mixer_enum(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 567 {
 568         azf3328_t *chip = snd_kcontrol_chip(kcontrol);
 569         azf3328_mixer_reg_t reg;
 570         unsigned int oreg, nreg, val;
 571
 572         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 573         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 574         val = oreg;
 575         if (reg.reg == IDX_MIXER_REC_SELECT)
 576         {
 577                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U ||
 578                 ucontrol->value.enumerated.item[1] > reg.enum_c - 1U)
 579                         return -EINVAL;
 580                 val = (ucontrol->value.enumerated.item[0] << 8) |
 581                       (ucontrol->value.enumerated.item[1] << 0);
 582         }
 583         else
 584         {
 585                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U)
 586                         return -EINVAL;
 587                 val &= ~((reg.enum_c - 1) << reg.lchan_shift);
 588                 val |= (ucontrol->value.enumerated.item[0] << reg.lchan_shift);
 589         }
 590         snd_azf3328_mixer_outw(chip, reg.reg, val);
 591         nreg = val;
 592
 593         snd_azf3328_dbgmixer("put_enum: %02x to %04x, oreg %04x\n", reg.reg, val, oreg);
 594         return (nreg != oreg);
 595 }
 596
 597 static const snd_kcontrol_new_t snd_azf3328_mixer_controls[] __devinitdata = {
 598         AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
 599         AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
 600         AZF3328_MIXER_SWITCH("Wave Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),
 601         AZF3328_MIXER_VOL_STEREO("Wave Playback Volume", IDX_MIXER_WAVEOUT, 0x1f, 1),
 602         AZF3328_MIXER_SWITCH("Wave 3D Bypass Playback Switch", IDX_MIXER_ADVCTL2, 7, 1),
 603         AZF3328_MIXER_SWITCH("FM Playback Switch", IDX_MIXER_FMSYNTH, 15, 1),
 604         AZF3328_MIXER_VOL_STEREO("FM Playback Volume", IDX_MIXER_FMSYNTH, 0x1f, 1),
 605         AZF3328_MIXER_SWITCH("CD Playback Switch", IDX_MIXER_CDAUDIO, 15, 1),
 606         AZF3328_MIXER_VOL_STEREO("CD Playback Volume", IDX_MIXER_CDAUDIO, 0x1f, 1),
 607         AZF3328_MIXER_SWITCH("Capture Switch", IDX_MIXER_REC_VOLUME, 15, 1),
 608         AZF3328_MIXER_VOL_STEREO("Capture Volume", IDX_MIXER_REC_VOLUME, 0x0f, 0),
 609         AZF3328_MIXER_ENUM("Capture Source", IDX_MIXER_REC_SELECT, 8, 0),
 610         AZF3328_MIXER_SWITCH("Mic Playback Switch", IDX_MIXER_MIC, 15, 1),
 611         AZF3328_MIXER_VOL_MONO("Mic Playback Volume", IDX_MIXER_MIC, 0x1f, 1),
 612         AZF3328_MIXER_SWITCH("Mic Boost (+20dB)", IDX_MIXER_MIC, 6, 0),
 613         AZF3328_MIXER_SWITCH("Line Playback Switch", IDX_MIXER_LINEIN, 15, 1),
 614         AZF3328_MIXER_VOL_STEREO("Line Playback Volume", IDX_MIXER_LINEIN, 0x1f, 1),
 615         AZF3328_MIXER_SWITCH("PC Speaker Playback Switch", IDX_MIXER_PCBEEP, 15, 1),
 616         AZF3328_MIXER_VOL_SPECIAL("PC Speaker Playback Volume", IDX_MIXER_PCBEEP, 0x0f, 1, 1),
 617         AZF3328_MIXER_SWITCH("Video Playback Switch", IDX_MIXER_VIDEO, 15, 1),
 618         AZF3328_MIXER_VOL_STEREO("Video Playback Volume", IDX_MIXER_VIDEO, 0x1f, 1),
 619         AZF3328_MIXER_SWITCH("Aux Playback Switch", IDX_MIXER_AUX, 15, 1),
 620         AZF3328_MIXER_VOL_STEREO("Aux Playback Volume", IDX_MIXER_AUX, 0x1f, 1),
 621         AZF3328_MIXER_SWITCH("Modem Playback Switch", IDX_MIXER_MODEMOUT, 15, 1),
 622         AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
 623         AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
 624         AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
 625         AZF3328_MIXER_ENUM("Modem Out Select", IDX_MIXER_ADVCTL2, 2, 8),
 626         AZF3328_MIXER_ENUM("Mono Select Source", IDX_MIXER_ADVCTL2, 2, 9),
 627         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
 628         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
 629         AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
 630         AZF3328_MIXER_VOL_SPECIAL("3D Control - Wide", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
 631         AZF3328_MIXER_VOL_SPECIAL("3D Control - Space", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
 632 #if MIXER_TESTING
 633         AZF3328_MIXER_SWITCH("0", IDX_MIXER_ADVCTL2, 0, 0),
 634         AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
 635         AZF3328_MIXER_SWITCH("2", IDX_MIXER_ADVCTL2, 2, 0),
 636         AZF3328_MIXER_SWITCH("3", IDX_MIXER_ADVCTL2, 3, 0),
 637         AZF3328_MIXER_SWITCH("4", IDX_MIXER_ADVCTL2, 4, 0),
 638         AZF3328_MIXER_SWITCH("5", IDX_MIXER_ADVCTL2, 5, 0),
 639         AZF3328_MIXER_SWITCH("6", IDX_MIXER_ADVCTL2, 6, 0),
 640         AZF3328_MIXER_SWITCH("7", IDX_MIXER_ADVCTL2, 7, 0),
 641         AZF3328_MIXER_SWITCH("8", IDX_MIXER_ADVCTL2, 8, 0),
 642         AZF3328_MIXER_SWITCH("9", IDX_MIXER_ADVCTL2, 9, 0),
 643         AZF3328_MIXER_SWITCH("10", IDX_MIXER_ADVCTL2, 10, 0),
 644         AZF3328_MIXER_SWITCH("11", IDX_MIXER_ADVCTL2, 11, 0),
 645         AZF3328_MIXER_SWITCH("12", IDX_MIXER_ADVCTL2, 12, 0),
 646         AZF3328_MIXER_SWITCH("13", IDX_MIXER_ADVCTL2, 13, 0),
 647         AZF3328_MIXER_SWITCH("14", IDX_MIXER_ADVCTL2, 14, 0),
 648         AZF3328_MIXER_SWITCH("15", IDX_MIXER_ADVCTL2, 15, 0),
 649 #endif
 650 };
 651
 652 static const u16 __devinitdata snd_azf3328_init_values[][2] = {
 653         { IDX_MIXER_PLAY_MASTER,        MIXER_MUTE_MASK|0x1f1f },
 654         { IDX_MIXER_MODEMOUT,           MIXER_MUTE_MASK|0x1f1f },
 655         { IDX_MIXER_BASSTREBLE,         0x0000 },
 656         { IDX_MIXER_PCBEEP,             MIXER_MUTE_MASK|0x1f1f },
 657         { IDX_MIXER_MODEMIN,            MIXER_MUTE_MASK|0x1f1f },
 658         { IDX_MIXER_MIC,                MIXER_MUTE_MASK|0x001f },
 659         { IDX_MIXER_LINEIN,             MIXER_MUTE_MASK|0x1f1f },
 660         { IDX_MIXER_CDAUDIO,            MIXER_MUTE_MASK|0x1f1f },
 661         { IDX_MIXER_VIDEO,              MIXER_MUTE_MASK|0x1f1f },
 662         { IDX_MIXER_AUX,                MIXER_MUTE_MASK|0x1f1f },
 663         { IDX_MIXER_WAVEOUT,            MIXER_MUTE_MASK|0x1f1f },
 664         { IDX_MIXER_FMSYNTH,            MIXER_MUTE_MASK|0x1f1f },
 665         { IDX_MIXER_REC_VOLUME,         MIXER_MUTE_MASK|0x0707 },
 666 };
 667
 668 static int __devinit
 669 snd_azf3328_mixer_new(azf3328_t *chip)
 670 {
 671         snd_card_t *card;
 672         const snd_kcontrol_new_t *sw;
 673         unsigned int idx;
 674         int err;
 675
 676         snd_azf3328_dbgcallenter();
 677         snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
 678
 679         card = chip->card;
 680
 681         /* mixer reset */
 682         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
 683
 684         /* mute and zero volume channels */
 685         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_init_values); idx++) {
 686                 snd_azf3328_mixer_outw(chip,
 687                         snd_azf3328_init_values[idx][0],
 688                         snd_azf3328_init_values[idx][1]);
 689         }
 690
 691         /* add mixer controls */
 692         sw = snd_azf3328_mixer_controls;
 693         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_mixer_controls); idx++, sw++) {
 694                 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(sw, chip))) < 0)
 695                         return err;
 696         }
 697         snd_component_add(card, "AZF3328 mixer");
 698         strcpy(card->mixername, "AZF3328 mixer");
 699
 700         snd_azf3328_dbgcallleave();
 701         return 0;
 702 }
 703
 704 static int
 705 snd_azf3328_hw_params(snd_pcm_substream_t * substream,
 706                                  snd_pcm_hw_params_t * hw_params)
 707 {
 708         int res;
 709         snd_azf3328_dbgcallenter();
 710         res = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 711         snd_azf3328_dbgcallleave();
 712         return res;
 713 }
 714
 715 static int
 716 snd_azf3328_hw_free(snd_pcm_substream_t * substream)
 717 {
 718         snd_azf3328_dbgcallenter();
 719         snd_pcm_lib_free_pages(substream);
 720         snd_azf3328_dbgcallleave();
 721         return 0;
 722 }
 723
 724 static void
 725 snd_azf3328_setfmt(azf3328_t *chip,
 726                                unsigned int reg,
 727                                unsigned int bitrate,
 728                                unsigned int format_width,
 729                                unsigned int channels
 730 )
 731 {
 732         u16 val = 0xff00;
 733         unsigned long flags;
 734
 735         snd_azf3328_dbgcallenter();
 736         switch (bitrate) {
 737         case  4000: val |= SOUNDFORMAT_FREQ_SUSPECTED_4000; break;
 738         case  4800: val |= SOUNDFORMAT_FREQ_SUSPECTED_4800; break;
 739         case  5512: val |= SOUNDFORMAT_FREQ_5510; break; /* the AZF3328 names it "5510" for some strange reason */
 740         case  6620: val |= SOUNDFORMAT_FREQ_6620; break;
 741         case  8000: val |= SOUNDFORMAT_FREQ_8000; break;
 742         case  9600: val |= SOUNDFORMAT_FREQ_9600; break;
 743         case 11025: val |= SOUNDFORMAT_FREQ_11025; break;
 744         case 13240: val |= SOUNDFORMAT_FREQ_SUSPECTED_13240; break;
 745         case 16000: val |= SOUNDFORMAT_FREQ_16000; break;
 746         case 22050: val |= SOUNDFORMAT_FREQ_22050; break;
 747         case 32000: val |= SOUNDFORMAT_FREQ_32000; break;
 748         case 44100: val |= SOUNDFORMAT_FREQ_44100; break;
 749         case 48000: val |= SOUNDFORMAT_FREQ_48000; break;
 750         case 66200: val |= SOUNDFORMAT_FREQ_SUSPECTED_66200; break;
 751         default:
 752                 snd_printk(KERN_WARNING "unknown bitrate %d, assuming 44.1kHz!\n", bitrate);
 753                 val |= SOUNDFORMAT_FREQ_44100;
 754                 break;
 755         }
 756         /* val = 0xff07; 3m27.993s (65301Hz; -> 64000Hz???) hmm, 66120, 65967, 66123 */
 757         /* val = 0xff09; 17m15.098s (13123,478Hz; -> 12000Hz???) hmm, 13237.2Hz? */
 758         /* val = 0xff0a; 47m30.599s (4764,891Hz; -> 4800Hz???) yup, 4803Hz */
 759         /* val = 0xff0c; 57m0.510s (4010,263Hz; -> 4000Hz???) yup, 4003Hz */
 760         /* val = 0xff05; 5m11.556s (... -> 44100Hz) */
 761         /* val = 0xff03; 10m21.529s (21872,463Hz; -> 22050Hz???) */
 762         /* val = 0xff0f; 20m41.883s (10937,993Hz; -> 11025Hz???) */
 763         /* val = 0xff0d; 41m23.135s (5523,600Hz; -> 5512Hz???) */
 764         /* val = 0xff0e; 28m30.777s (8017Hz; -> 8000Hz???) */
 765
 766         if (channels == 2)
 767                 val |= SOUNDFORMAT_FLAG_2CHANNELS;
 768
 769         if (format_width == 16)
 770                 val |= SOUNDFORMAT_FLAG_16BIT;
 771
 772         spin_lock_irqsave(&chip->reg_lock, flags);
 773
 774         /* set bitrate/format */
 775         snd_azf3328_codec_outw(chip, reg, val);
 776
 777         /* changing the bitrate/format settings switches off the
 778          * audio output with an annoying click in case of 8/16bit format change
 779          * (maybe shutting down DAC/ADC?), thus immediately
 780          * do some tweaking to reenable it and get rid of the clicking
 781          * (FIXME: yes, it works, but what exactly am I doing here?? :)
 782          * FIXME: does this have some side effects for full-duplex
 783          * or other dramatic side effects? */
 784         if (reg == IDX_IO_PLAY_SOUNDFORMAT) /* only do it for playback */
 785                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 786                         snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) |
 787                         DMA_PLAY_SOMETHING1 |
 788                         DMA_PLAY_SOMETHING2 |
 789                         SOMETHING_ALMOST_ALWAYS_SET |
 790                         DMA_EPILOGUE_SOMETHING |
 791                         DMA_SOMETHING_ELSE
 792                 );
 793
 794         spin_unlock_irqrestore(&chip->reg_lock, flags);
 795         snd_azf3328_dbgcallleave();
 796 }
 797
 798 static void
 799 snd_azf3328_setdmaa(azf3328_t *chip,
 800                                 long unsigned int addr,
 801                                 unsigned int count,
 802                                 unsigned int size,
 803                                 int do_recording)
 804 {
 805         unsigned long flags, portbase;
 806         unsigned int is_running;
 807
 808         snd_azf3328_dbgcallenter();
 809         if (do_recording)
 810         {
 811                 /* access capture registers, i.e. skip playback reg section */
 812                 portbase = chip->codec_port + 0x20;
 813                 is_running = chip->is_recording;
 814         }
 815         else
 816         {
 817                 /* access the playback register section */
 818                 portbase = chip->codec_port + 0x00;
 819                 is_running = chip->is_playing;
 820         }
 821
 822         /* AZF3328 uses a two buffer pointer DMA playback approach */
 823         if (!is_running)
 824         {
 825                 unsigned long addr_area2;
 826                 unsigned long count_areas, count_tmp; /* width 32bit -- overflow!! */
 827                 count_areas = size/2;
 828                 addr_area2 = addr+count_areas;
 829                 count_areas--; /* max. index */
 830                 snd_azf3328_dbgplay("set DMA: buf1 %08lx[%lu], buf2 %08lx[%lu]\n", addr, count_areas, addr_area2, count_areas);
 831
 832                 /* build combined I/O buffer length word */
 833                 count_tmp = count_areas;
 834                 count_areas |= (count_tmp << 16);
 835                 spin_lock_irqsave(&chip->reg_lock, flags);
 836                 outl(addr, portbase + IDX_IO_PLAY_DMA_START_1);
 837                 outl(addr_area2, portbase + IDX_IO_PLAY_DMA_START_2);
 838                 outl(count_areas, portbase + IDX_IO_PLAY_DMA_LEN_1);
 839                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 840         }
 841         snd_azf3328_dbgcallleave();
 842 }
 843
 844 static int
 845 snd_azf3328_playback_prepare(snd_pcm_substream_t *substream)
 846 {
 847 #if 0
 848         azf3328_t *chip = snd_pcm_substream_chip(substream);
 849         snd_pcm_runtime_t *runtime = substream->runtime;
 850         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 851         unsigned int count = snd_pcm_lib_period_bytes(substream);
 852 #endif
 853
 854         snd_azf3328_dbgcallenter();
 855 #if 0
 856         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 857                 runtime->rate,
 858                 snd_pcm_format_width(runtime->format),
 859                 runtime->channels);
 860         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 0);
 861 #endif
 862         snd_azf3328_dbgcallleave();
 863         return 0;
 864 }
 865
 866 static int
 867 snd_azf3328_capture_prepare(snd_pcm_substream_t * substream)
 868 {
 869 #if 0
 870         azf3328_t *chip = snd_pcm_substream_chip(substream);
 871         snd_pcm_runtime_t *runtime = substream->runtime;
 872         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 873         unsigned int count = snd_pcm_lib_period_bytes(substream);
 874 #endif
 875
 876         snd_azf3328_dbgcallenter();
 877 #if 0
 878         snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
 879                 runtime->rate,
 880                 snd_pcm_format_width(runtime->format),
 881                 runtime->channels);
 882         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 1);
 883 #endif
 884         snd_azf3328_dbgcallleave();
 885         return 0;
 886 }
 887
 888 static int
 889 snd_azf3328_playback_trigger(snd_pcm_substream_t * substream, int cmd)
 890 {
 891         azf3328_t *chip = snd_pcm_substream_chip(substream);
 892         snd_pcm_runtime_t *runtime = substream->runtime;
 893         int result = 0;
 894         unsigned int status1;
 895
 896         snd_azf3328_dbgcalls("snd_azf3328_playback_trigger cmd %d\n", cmd);
 897
 898         switch (cmd) {
 899         case SNDRV_PCM_TRIGGER_START:
 900                 snd_azf3328_dbgplay("START PLAYBACK\n");
 901
 902                 /* mute WaveOut */
 903                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 904
 905                 snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 906                         runtime->rate,
 907                         snd_pcm_format_width(runtime->format),
 908                         runtime->channels);
 909
 910                 spin_lock(&chip->reg_lock);
 911                 /* stop playback */
 912                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 913                 status1 &= ~DMA_RESUME;
 914                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 915
 916                 /* FIXME: clear interrupts or what??? */
 917                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_IRQTYPE, 0xffff);
 918                 spin_unlock(&chip->reg_lock);
 919
 920                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
 921                         snd_pcm_lib_period_bytes(substream),
 922                         snd_pcm_lib_buffer_bytes(substream),
 923                         0);
 924
 925                 spin_lock(&chip->reg_lock);
 926 #ifdef WIN9X
 927                 /* FIXME: enable playback/recording??? */
 928                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
 929                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 930
 931                 /* start playback again */
 932                 /* FIXME: what is this value (0x0010)??? */
 933                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
 934                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 935 #else /* NT4 */
 936                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 937                         0x0000);
 938                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 939                         DMA_PLAY_SOMETHING1);
 940                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 941                         DMA_PLAY_SOMETHING1 |
 942                         DMA_PLAY_SOMETHING2);
 943                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 944                         DMA_RESUME |
 945                         SOMETHING_ALMOST_ALWAYS_SET |
 946                         DMA_EPILOGUE_SOMETHING |
 947                         DMA_SOMETHING_ELSE);
 948 #endif
 949                 spin_unlock(&chip->reg_lock);
 950
 951                 /* now unmute WaveOut */
 952                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 953
 954                 chip->is_playing = 1;
 955                 snd_azf3328_dbgplay("STARTED PLAYBACK\n");
 956                 break;
 957         case SNDRV_PCM_TRIGGER_STOP:
 958                 snd_azf3328_dbgplay("STOP PLAYBACK\n");
 959
 960                 /* mute WaveOut */
 961                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 962
 963                 spin_lock(&chip->reg_lock);
 964                 /* stop playback */
 965                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 966
 967                 status1 &= ~DMA_RESUME;
 968                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 969
 970                 /* hmm, is this really required? we're resetting the same bit
 971                  * immediately thereafter... */
 972                 status1 |= DMA_PLAY_SOMETHING1;
 973                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 974
 975                 status1 &= ~DMA_PLAY_SOMETHING1;
 976                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 977                 spin_unlock(&chip->reg_lock);
 978
 979                 /* now unmute WaveOut */
 980                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 981                 chip->is_playing = 0;
 982                 snd_azf3328_dbgplay("STOPPED PLAYBACK\n");
 983                 break;
 984         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 985                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
 986                 break;
 987         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 988                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
 989                 break;
 990         default:
 991                 return -EINVAL;
 992         }
 993
 994         snd_azf3328_dbgcallleave();
 995         return result;
 996 }
 997
 998 /* this is just analogous to playback; I'm not quite sure whether recording
 999  * should actually be triggered like that */
1000 static int
1001 snd_azf3328_capture_trigger(snd_pcm_substream_t * substream, int cmd)
1002 {
1003         azf3328_t *chip = snd_pcm_substream_chip(substream);
1004         snd_pcm_runtime_t *runtime = substream->runtime;
1005         int result = 0;
1006         unsigned int status1;
1007
1008         snd_azf3328_dbgcalls("snd_azf3328_capture_trigger cmd %d\n", cmd);
1009
1010         switch (cmd) {
1011         case SNDRV_PCM_TRIGGER_START:
1012
1013                 snd_azf3328_dbgplay("START CAPTURE\n");
1014
1015                 snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
1016                         runtime->rate,
1017                         snd_pcm_format_width(runtime->format),
1018                         runtime->channels);
1019
1020                 spin_lock(&chip->reg_lock);
1021                 /* stop recording */
1022                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1023                 status1 &= ~DMA_RESUME;
1024                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1025
1026                 /* FIXME: clear interrupts or what??? */
1027                 snd_azf3328_codec_outw(chip, IDX_IO_REC_IRQTYPE, 0xffff);
1028                 spin_unlock(&chip->reg_lock);
1029
1030                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
1031                         snd_pcm_lib_period_bytes(substream),
1032                         snd_pcm_lib_buffer_bytes(substream),
1033                         1);
1034
1035                 spin_lock(&chip->reg_lock);
1036 #ifdef WIN9X
1037                 /* FIXME: enable playback/recording??? */
1038                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
1039                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1040
1041                 /* start capture again */
1042                 /* FIXME: what is this value (0x0010)??? */
1043                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
1044                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1045 #else
1046                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1047                         0x0000);
1048                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1049                         DMA_PLAY_SOMETHING1);
1050                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1051                         DMA_PLAY_SOMETHING1 |
1052                         DMA_PLAY_SOMETHING2);
1053                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1054                         DMA_RESUME |
1055                         SOMETHING_ALMOST_ALWAYS_SET |
1056                         DMA_EPILOGUE_SOMETHING |
1057                         DMA_SOMETHING_ELSE);
1058 #endif
1059                 spin_unlock(&chip->reg_lock);
1060
1061                 chip->is_recording = 1;
1062                 snd_azf3328_dbgplay("STARTED CAPTURE\n");
1063                 break;
1064         case SNDRV_PCM_TRIGGER_STOP:
1065                 snd_azf3328_dbgplay("STOP CAPTURE\n");
1066
1067                 spin_lock(&chip->reg_lock);
1068                 /* stop recording */
1069                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1070
1071                 status1 &= ~DMA_RESUME;
1072                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1073
1074                 status1 |= DMA_PLAY_SOMETHING1;
1075                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1076
1077                 status1 &= ~DMA_PLAY_SOMETHING1;
1078                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1079                 spin_unlock(&chip->reg_lock);
1080
1081                 chip->is_recording = 0;
1082                 snd_azf3328_dbgplay("STOPPED CAPTURE\n");
1083                 break;
1084         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1085                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1086                 break;
1087         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1088                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1089                 break;
1090         default:
1091                 return -EINVAL;
1092         }
1093
1094         snd_azf3328_dbgcallleave();
1095         return result;
1096 }
1097
1098 static snd_pcm_uframes_t
1099 snd_azf3328_playback_pointer(snd_pcm_substream_t * substream)
1100 {
1101         azf3328_t *chip = snd_pcm_substream_chip(substream);
1102         unsigned long bufptr, result;
1103         snd_pcm_uframes_t frmres;
1104
1105 #ifdef QUERY_HARDWARE
1106         bufptr = inl(chip->codec_port+IDX_IO_PLAY_DMA_START_1);
1107 #else
1108         bufptr = substream->runtime->dma_addr;
1109 #endif
1110         result = inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS);
1111
1112         /* calculate offset */
1113         result -= bufptr;
1114         frmres = bytes_to_frames( substream->runtime, result);
1115         snd_azf3328_dbgplay("PLAY @ 0x%8lx, frames %8ld\n", result, frmres);
1116         return frmres;
1117 }
1118
1119 static snd_pcm_uframes_t
1120 snd_azf3328_capture_pointer(snd_pcm_substream_t * substream)
1121 {
1122         azf3328_t *chip = snd_pcm_substream_chip(substream);
1123         unsigned long bufptr, result;
1124         snd_pcm_uframes_t frmres;
1125
1126 #ifdef QUERY_HARDWARE
1127         bufptr = inl(chip->codec_port+IDX_IO_REC_DMA_START_1);
1128 #else
1129         bufptr = substream->runtime->dma_addr;
1130 #endif
1131         result = inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS);
1132
1133         /* calculate offset */
1134         result -= bufptr;
1135         frmres = bytes_to_frames( substream->runtime, result);
1136         snd_azf3328_dbgplay("REC  @ 0x%8lx, frames %8ld\n", result, frmres);
1137         return frmres;
1138 }
1139
1140 static irqreturn_t
1141 snd_azf3328_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1142 {
1143         azf3328_t *chip = dev_id;
1144         u8 status, which;
1145         static unsigned long irq_count;
1146
1147         status = snd_azf3328_codec_inb(chip, IDX_IO_IRQSTATUS);
1148
1149         /* fast path out, to ease interrupt sharing */
1150         if (!(status & (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_MPU401|IRQ_TIMER)))
1151                 return IRQ_NONE; /* must be interrupt for another device */
1152
1153         snd_azf3328_dbgplay("Interrupt %ld!\nIDX_IO_PLAY_FLAGS %04x, IDX_IO_PLAY_IRQTYPE %04x, IDX_IO_IRQSTATUS %04x\n",
1154                 irq_count,
1155                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS),
1156                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_IRQTYPE),
1157                 status);
1158
1159         if (status & IRQ_TIMER)
1160         {
1161                 /* snd_azf3328_dbgplay("timer %ld\n", inl(chip->codec_port+IDX_IO_TIMER_VALUE) & TIMER_VALUE_MASK); */
1162                 if (chip->timer)
1163                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1164                 /* ACK timer */
1165                 spin_lock(&chip->reg_lock);
1166                 snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x07);
1167                 spin_unlock(&chip->reg_lock);
1168                 snd_azf3328_dbgplay("azt3328: timer IRQ\n");
1169         }
1170         if (status & IRQ_PLAYBACK)
1171         {
1172                 spin_lock(&chip->reg_lock);
1173                 which = snd_azf3328_codec_inb(chip, IDX_IO_PLAY_IRQTYPE);
1174                 /* ack all IRQ types immediately */
1175                 snd_azf3328_codec_outb(chip, IDX_IO_PLAY_IRQTYPE, which);
1176                 spin_unlock(&chip->reg_lock);
1177
1178                 if (chip->pcm && chip->playback_substream)
1179                 {
1180                         snd_pcm_period_elapsed(chip->playback_substream);
1181                         snd_azf3328_dbgplay("PLAY period done (#%x), @ %x\n",
1182                                 which,
1183                                 inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS));
1184                 }
1185                 else
1186                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1187                 if (which & IRQ_PLAY_SOMETHING)
1188                         snd_azf3328_dbgplay("azt3328: unknown play IRQ type occurred, please report!\n");
1189         }
1190         if (status & IRQ_RECORDING)
1191         {
1192                 spin_lock(&chip->reg_lock);
1193                 which = snd_azf3328_codec_inb(chip, IDX_IO_REC_IRQTYPE);
1194                 /* ack all IRQ types immediately */
1195                 snd_azf3328_codec_outb(chip, IDX_IO_REC_IRQTYPE, which);
1196                 spin_unlock(&chip->reg_lock);
1197
1198                 if (chip->pcm && chip->capture_substream)
1199                 {
1200                         snd_pcm_period_elapsed(chip->capture_substream);
1201                         snd_azf3328_dbgplay("REC  period done (#%x), @ %x\n",
1202                                 which,
1203                                 inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS));
1204                 }
1205                 else
1206                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1207                 if (which & IRQ_REC_SOMETHING)
1208                         snd_azf3328_dbgplay("azt3328: unknown rec IRQ type occurred, please report!\n");
1209         }
1210         /* MPU401 has less critical IRQ requirements
1211          * than timer and playback/recording, right? */
1212         if (status & IRQ_MPU401)
1213         {
1214                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
1215
1216                 /* hmm, do we have to ack the IRQ here somehow?
1217                  * If so, then I don't know how... */
1218                 snd_azf3328_dbgplay("azt3328: MPU401 IRQ\n");
1219         }
1220         irq_count++;
1221         return IRQ_HANDLED;
1222 }
1223
1224 /*****************************************************************/
1225
1226 static const snd_pcm_hardware_t snd_azf3328_playback =
1227 {
1228         /* FIXME!! Correct? */
1229         .info =                 SNDRV_PCM_INFO_MMAP |
1230                                 SNDRV_PCM_INFO_INTERLEAVED |
1231                                 SNDRV_PCM_INFO_MMAP_VALID,
1232         .formats =              SNDRV_PCM_FMTBIT_S8 |
1233                                 SNDRV_PCM_FMTBIT_U8 |
1234                                 SNDRV_PCM_FMTBIT_S16_LE |
1235                                 SNDRV_PCM_FMTBIT_U16_LE,
1236         .rates =                SNDRV_PCM_RATE_5512 |
1237                                 SNDRV_PCM_RATE_8000_48000 |
1238                                 SNDRV_PCM_RATE_KNOT,
1239         .rate_min =             4000,
1240         .rate_max =             66200,
1241         .channels_min =         1,
1242         .channels_max =         2,
1243         .buffer_bytes_max =     65536,
1244         .period_bytes_min =     64,
1245         .period_bytes_max =     65536,
1246         .periods_min =          1,
1247         .periods_max =          1024,
1248         /* FIXME: maybe that card actually has a FIFO?
1249          * Hmm, it seems newer revisions do have one, but we still don't know
1250          * its size... */
1251         .fifo_size =            0,
1252 };
1253
1254 static const snd_pcm_hardware_t snd_azf3328_capture =
1255 {
1256         /* FIXME */
1257         .info =                 SNDRV_PCM_INFO_MMAP |
1258                                 SNDRV_PCM_INFO_INTERLEAVED |
1259                                 SNDRV_PCM_INFO_MMAP_VALID,
1260         .formats =              SNDRV_PCM_FMTBIT_S8 |
1261                                 SNDRV_PCM_FMTBIT_U8 |
1262                                 SNDRV_PCM_FMTBIT_S16_LE |
1263                                 SNDRV_PCM_FMTBIT_U16_LE,
1264         .rates =                SNDRV_PCM_RATE_5512 |
1265                                 SNDRV_PCM_RATE_8000_48000 |
1266                                 SNDRV_PCM_RATE_KNOT,
1267         .rate_min =             4000,
1268         .rate_max =             66200,
1269         .channels_min =         1,
1270         .channels_max =         2,
1271         .buffer_bytes_max =     65536,
1272         .period_bytes_min =     64,
1273         .period_bytes_max =     65536,
1274         .periods_min =          1,
1275         .periods_max =          1024,
1276         .fifo_size =            0,
1277 };
1278
1279
1280 static unsigned int snd_azf3328_fixed_rates[] = {
1281         4000, 4800, 5512, 6620, 8000, 9600, 11025, 13240, 16000, 22050, 32000,
1282         44100, 48000, 66200 };
1283 static snd_pcm_hw_constraint_list_t snd_azf3328_hw_constraints_rates = {
1284         .count = ARRAY_SIZE(snd_azf3328_fixed_rates),
1285         .list = snd_azf3328_fixed_rates,
1286         .mask = 0,
1287 };
1288
1289 /*****************************************************************/
1290
1291 static int
1292 snd_azf3328_playback_open(snd_pcm_substream_t * substream)
1293 {
1294         azf3328_t *chip = snd_pcm_substream_chip(substream);
1295         snd_pcm_runtime_t *runtime = substream->runtime;
1296
1297         snd_azf3328_dbgcallenter();
1298         chip->playback_substream = substream;
1299         runtime->hw = snd_azf3328_playback;
1300         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1301                                    &snd_azf3328_hw_constraints_rates);
1302         snd_azf3328_dbgcallleave();
1303         return 0;
1304 }
1305
1306 static int
1307 snd_azf3328_capture_open(snd_pcm_substream_t * substream)
1308 {
1309         azf3328_t *chip = snd_pcm_substream_chip(substream);
1310         snd_pcm_runtime_t *runtime = substream->runtime;
1311
1312         snd_azf3328_dbgcallenter();
1313         chip->capture_substream = substream;
1314         runtime->hw = snd_azf3328_capture;
1315         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1316                                    &snd_azf3328_hw_constraints_rates);
1317         snd_azf3328_dbgcallleave();
1318         return 0;
1319 }
1320
1321 static int
1322 snd_azf3328_playback_close(snd_pcm_substream_t * substream)
1323 {
1324         azf3328_t *chip = snd_pcm_substream_chip(substream);
1325
1326         snd_azf3328_dbgcallenter();
1327
1328         chip->playback_substream = NULL;
1329         snd_azf3328_dbgcallleave();
1330         return 0;
1331 }
1332
1333 static int
1334 snd_azf3328_capture_close(snd_pcm_substream_t * substream)
1335 {
1336         azf3328_t *chip = snd_pcm_substream_chip(substream);
1337
1338         snd_azf3328_dbgcallenter();
1339         chip->capture_substream = NULL;
1340         snd_azf3328_dbgcallleave();
1341         return 0;
1342 }
1343
1344 /******************************************************************/
1345
1346 static snd_pcm_ops_t snd_azf3328_playback_ops = {
1347         .open =         snd_azf3328_playback_open,
1348         .close =        snd_azf3328_playback_close,
1349         .ioctl =        snd_pcm_lib_ioctl,
1350         .hw_params =    snd_azf3328_hw_params,
1351         .hw_free =      snd_azf3328_hw_free,
1352         .prepare =      snd_azf3328_playback_prepare,
1353         .trigger =      snd_azf3328_playback_trigger,
1354         .pointer =      snd_azf3328_playback_pointer
1355 };
1356
1357 static snd_pcm_ops_t snd_azf3328_capture_ops = {
1358         .open =         snd_azf3328_capture_open,
1359         .close =        snd_azf3328_capture_close,
1360         .ioctl =        snd_pcm_lib_ioctl,
1361         .hw_params =    snd_azf3328_hw_params,
1362         .hw_free =      snd_azf3328_hw_free,
1363         .prepare =      snd_azf3328_capture_prepare,
1364         .trigger =      snd_azf3328_capture_trigger,
1365         .pointer =      snd_azf3328_capture_pointer
1366 };
1367
1368 static void
1369 snd_azf3328_pcm_free(snd_pcm_t *pcm)
1370 {
1371         azf3328_t *chip = pcm->private_data;
1372         chip->pcm = NULL;
1373         snd_pcm_lib_preallocate_free_for_all(pcm);
1374 }
1375
1376 static int __devinit
1377 snd_azf3328_pcm(azf3328_t *chip, int device)
1378 {
1379         snd_pcm_t *pcm;
1380         int err;
1381
1382         snd_azf3328_dbgcallenter();
1383         if ((err = snd_pcm_new(chip->card, "AZF3328 DSP", device, 1, 1, &pcm)) < 0)
1384                 return err;
1385         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_azf3328_playback_ops);
1386         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_azf3328_capture_ops);
1387
1388         pcm->private_data = chip;
1389         pcm->private_free = snd_azf3328_pcm_free;
1390         pcm->info_flags = 0;
1391         strcpy(pcm->name, chip->card->shortname);
1392         chip->pcm = pcm;
1393
1394         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1395                                               snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1396
1397         snd_azf3328_dbgcallleave();
1398         return 0;
1399 }
1400
1401 /******************************************************************/
1402
1403 #ifdef SUPPORT_JOYSTICK
1404 static int __devinit
1405 snd_azf3328_config_joystick(azf3328_t *chip, int dev)
1406 {
1407         struct gameport *gp;
1408         struct resource *r;
1409
1410         if (!joystick[dev])
1411                 return -ENODEV;
1412
1413         if (!(r = request_region(0x200, 8, "AZF3328 gameport"))) {
1414                 printk(KERN_WARNING "azt3328: cannot reserve joystick ports\n");
1415                 return -EBUSY;
1416         }
1417
1418         chip->gameport = gp = gameport_allocate_port();
1419         if (!gp) {
1420                 printk(KERN_ERR "azt3328: cannot allocate memory for gameport\n");
1421                 release_and_free_resource(r);
1422                 return -ENOMEM;
1423         }
1424
1425         gameport_set_name(gp, "AZF3328 Gameport");
1426         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1427         gameport_set_dev_parent(gp, &chip->pci->dev);
1428         gp->io = 0x200;
1429         gameport_set_port_data(gp, r);
1430
1431         snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1432                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) | LEGACY_JOY);
1433
1434         gameport_register_port(chip->gameport);
1435
1436         return 0;
1437 }
1438
1439 static void
1440 snd_azf3328_free_joystick(azf3328_t *chip)
1441 {
1442         if (chip->gameport) {
1443                 struct resource *r = gameport_get_port_data(chip->gameport);
1444
1445                 gameport_unregister_port(chip->gameport);
1446                 chip->gameport = NULL;
1447                 /* disable gameport */
1448                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1449                                       snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1450                 release_and_free_resource(r);
1451         }
1452 }
1453 #else
1454 static inline int
1455 snd_azf3328_config_joystick(azf3328_t *chip, int dev) { return -ENOSYS; }
1456 static inline void
1457 snd_azf3328_free_joystick(azf3328_t *chip) { }
1458 #endif
1459
1460 /******************************************************************/
1461
1462 static int
1463 snd_azf3328_free(azf3328_t *chip)
1464 {
1465         if (chip->irq < 0)
1466                 goto __end_hw;
1467
1468         /* reset (close) mixer */
1469         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1); /* first mute master volume */
1470         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
1471
1472         /* interrupt setup - mask everything (FIXME!) */
1473         /* well, at least we know how to disable the timer IRQ */
1474         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00);
1475
1476         synchronize_irq(chip->irq);
1477 __end_hw:
1478         snd_azf3328_free_joystick(chip);
1479         if (chip->irq >= 0)
1480                 free_irq(chip->irq, (void *)chip);
1481         pci_release_regions(chip->pci);
1482         pci_disable_device(chip->pci);
1483
1484         kfree(chip);
1485         return 0;
1486 }
1487
1488 static int
1489 snd_azf3328_dev_free(snd_device_t *device)
1490 {
1491         azf3328_t *chip = device->device_data;
1492         return snd_azf3328_free(chip);
1493 }
1494
1495 /******************************************************************/
1496
1497 /*** NOTE: the physical timer resolution actually is 1024000 ticks per second,
1498  *** but announcing those attributes to user-space would make programs
1499  *** configure the timer to a 1 tick value, resulting in an absolutely fatal
1500  *** timer IRQ storm.
1501  *** Thus I chose to announce a down-scaled virtual timer to the outside and
1502  *** calculate real timer countdown values internally.
1503  *** (the scale factor can be set via module parameter "seqtimer_scaling").
1504  ***/
1505
1506 static int
1507 snd_azf3328_timer_start(snd_timer_t *timer)
1508 {
1509         azf3328_t *chip;
1510         unsigned long flags;
1511         unsigned int delay;
1512
1513         snd_azf3328_dbgcallenter();
1514         chip = snd_timer_chip(timer);
1515         delay = ((timer->sticks * seqtimer_scaling) - 1) & TIMER_VALUE_MASK;
1516         if (delay < 49)
1517         {
1518                 /* uhoh, that's not good, since user-space won't know about
1519                  * this timing tweak
1520                  * (we need to do it to avoid a lockup, though) */
1521
1522                 snd_azf3328_dbgtimer("delay was too low (%d)!\n", delay);
1523                 delay = 49; /* minimum time is 49 ticks */
1524         }
1525         snd_azf3328_dbgtimer("setting timer countdown value %d, add COUNTDOWN|IRQ\n", delay);
1526         delay |= TIMER_ENABLE_COUNTDOWN | TIMER_ENABLE_IRQ;
1527         spin_lock_irqsave(&chip->reg_lock, flags);
1528         snd_azf3328_codec_outl(chip, IDX_IO_TIMER_VALUE, delay);
1529         spin_unlock_irqrestore(&chip->reg_lock, flags);
1530         snd_azf3328_dbgcallleave();
1531         return 0;
1532 }
1533
1534 static int
1535 snd_azf3328_timer_stop(snd_timer_t *timer)
1536 {
1537         azf3328_t *chip;
1538         unsigned long flags;
1539
1540         snd_azf3328_dbgcallenter();
1541         chip = snd_timer_chip(timer);
1542         spin_lock_irqsave(&chip->reg_lock, flags);
1543         /* disable timer countdown and interrupt */
1544         /* FIXME: should we write TIMER_ACK_IRQ here? */
1545         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0);
1546         spin_unlock_irqrestore(&chip->reg_lock, flags);
1547         snd_azf3328_dbgcallleave();
1548         return 0;
1549 }
1550
1551
1552 static int
1553 snd_azf3328_timer_precise_resolution(snd_timer_t *timer,
1554                                                unsigned long *num, unsigned long *den)
1555 {
1556         snd_azf3328_dbgcallenter();
1557         *num = 1;
1558         *den = 1024000 / seqtimer_scaling;
1559         snd_azf3328_dbgcallleave();
1560         return 0;
1561 }
1562
1563 static struct _snd_timer_hardware snd_azf3328_timer_hw = {
1564         .flags = SNDRV_TIMER_HW_AUTO,
1565         .resolution = 977, /* 1000000/1024000 = 0.9765625us */
1566         .ticks = 1024000, /* max tick count, defined by the value register; actually it's not 1024000, but 1048576, but we don't care */
1567         .start = snd_azf3328_timer_start,
1568         .stop = snd_azf3328_timer_stop,
1569         .precise_resolution = snd_azf3328_timer_precise_resolution,
1570 };
1571
1572 static int __devinit
1573 snd_azf3328_timer(azf3328_t *chip, int device)
1574 {
1575         snd_timer_t *timer = NULL;
1576         snd_timer_id_t tid;
1577         int err;
1578
1579         snd_azf3328_dbgcallenter();
1580         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1581         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1582         tid.card = chip->card->number;
1583         tid.device = device;
1584         tid.subdevice = 0;
1585
1586         snd_azf3328_timer_hw.resolution *= seqtimer_scaling;
1587         snd_azf3328_timer_hw.ticks /= seqtimer_scaling;
1588         if ((err = snd_timer_new(chip->card, "AZF3328", &tid, &timer)) < 0) {
1589                 goto out;
1590         }
1591
1592         strcpy(timer->name, "AZF3328 timer");
1593         timer->private_data = chip;
1594         timer->hw = snd_azf3328_timer_hw;
1595
1596         chip->timer = timer;
1597
1598         err = 0;
1599
1600 out:
1601         snd_azf3328_dbgcallleave();
1602         return err;
1603 }
1604
1605 /******************************************************************/
1606
1607 #if 0
1608 /* check whether a bit can be modified */
1609 static void
1610 snd_azf3328_test_bit(unsigned int reg, int bit)
1611 {
1612         unsigned char val, valoff, valon;
1613
1614         val = inb(reg);
1615
1616         outb(val & ~(1 << bit), reg);
1617         valoff = inb(reg);
1618
1619         outb(val|(1 << bit), reg);
1620         valon = inb(reg);
1621
1622         outb(val, reg);
1623
1624         printk(KERN_ERR "reg %04x bit %d: %02x %02x %02x\n", reg, bit, val, valoff, valon);
1625 }
1626 #endif
1627
1628 static void
1629 snd_azf3328_debug_show_ports(const azf3328_t *chip)
1630 {
1631 #if DEBUG_MISC
1632         u16 tmp;
1633
1634         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);
1635
1636         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));
1637
1638         for (tmp=0; tmp <= 0x01; tmp += 1)
1639                 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));
1640
1641         for (tmp = 0; tmp <= 0x6E; tmp += 2)
1642                 snd_azf3328_dbgmisc("0x%02x: 0x%04x\n", tmp, snd_azf3328_codec_inb(chip, tmp));
1643 #endif
1644 }
1645
1646 static int __devinit
1647 snd_azf3328_create(snd_card_t * card,
1648                                          struct pci_dev *pci,
1649                                          unsigned long device_type,
1650                                          azf3328_t ** rchip)
1651 {
1652         azf3328_t *chip;
1653         int err;
1654         static snd_device_ops_t ops = {
1655                 .dev_free =     snd_azf3328_dev_free,
1656         };
1657         u16 tmp;
1658
1659         *rchip = NULL;
1660
1661         if ((err = pci_enable_device(pci)) < 0)
1662                 return err;
1663
1664         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1665         if (chip == NULL) {
1666                 err = -ENOMEM;
1667                 goto out_err;
1668         }
1669         spin_lock_init(&chip->reg_lock);
1670         chip->card = card;
1671         chip->pci = pci;
1672         chip->irq = -1;
1673
1674         /* check if we can restrict PCI DMA transfers to 24 bits */
1675         if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
1676             pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
1677                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
1678                 err = -ENXIO;
1679                 goto out_err;
1680         }
1681
1682         if ((err = pci_request_regions(pci, "Aztech AZF3328")) < 0) {
1683                 goto out_err;
1684         }
1685
1686         chip->codec_port = pci_resource_start(pci, 0);
1687         chip->io2_port   = pci_resource_start(pci, 1);
1688         chip->mpu_port   = pci_resource_start(pci, 2);
1689         chip->synth_port = pci_resource_start(pci, 3);
1690         chip->mixer_port = pci_resource_start(pci, 4);
1691
1692         if (request_irq(pci->irq, snd_azf3328_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
1693                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1694                 err = -EBUSY;
1695                 goto out_err;
1696         }
1697         chip->irq = pci->irq;
1698         pci_set_master(pci);
1699         synchronize_irq(chip->irq);
1700
1701         snd_azf3328_debug_show_ports(chip);
1702
1703         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1704                 goto out_err;
1705         }
1706
1707         /* create mixer interface & switches */
1708         if ((err = snd_azf3328_mixer_new(chip)) < 0)
1709                 goto out_err;
1710
1711 #if 0
1712         /* set very low bitrate to reduce noise and power consumption? */
1713         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT, 5512, 8, 1);
1714 #endif
1715
1716         /* standard chip init stuff */
1717         /* default IRQ init value */
1718         tmp = DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE;
1719
1720         spin_lock_irq(&chip->reg_lock);
1721         snd_azf3328_codec_outb(chip, IDX_IO_PLAY_FLAGS, tmp);
1722         snd_azf3328_codec_outb(chip, IDX_IO_REC_FLAGS, tmp);
1723         snd_azf3328_codec_outb(chip, IDX_IO_SOMETHING_FLAGS, tmp);
1724         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00); /* disable timer */
1725         spin_unlock_irq(&chip->reg_lock);
1726
1727         snd_card_set_dev(card, &pci->dev);
1728
1729         *rchip = chip;
1730
1731         err = 0;
1732         goto out;
1733
1734 out_err:
1735         if (chip)
1736                 snd_azf3328_free(chip);
1737         pci_disable_device(pci);
1738
1739 out:
1740         return err;
1741 }
1742
1743 static int __devinit
1744 snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
1745 {
1746         static int dev;
1747         snd_card_t *card;
1748         azf3328_t *chip;
1749         opl3_t *opl3;
1750         int err;
1751
1752         snd_azf3328_dbgcallenter();
1753         if (dev >= SNDRV_CARDS)
1754                 return -ENODEV;
1755         if (!enable[dev]) {
1756                 dev++;
1757                 return -ENOENT;
1758         }
1759
1760         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0 );
1761         if (card == NULL)
1762                 return -ENOMEM;
1763
1764         strcpy(card->driver, "AZF3328");
1765         strcpy(card->shortname, "Aztech AZF3328 (PCI168)");
1766
1767         if ((err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1768                 goto out_err;
1769         }
1770
1771         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_MPU401,
1772                                         chip->mpu_port, 1, pci->irq, 0,
1773                                         &chip->rmidi)) < 0) {
1774                 snd_printk(KERN_ERR "azf3328: no MPU-401 device at 0x%lx?\n", chip->mpu_port);
1775                 goto out_err;
1776         }
1777
1778         if ((err = snd_azf3328_timer(chip, 0)) < 0) {
1779                 goto out_err;
1780         }
1781
1782         if ((err = snd_azf3328_pcm(chip, 0)) < 0) {
1783                 goto out_err;
1784         }
1785
1786         if (snd_opl3_create(card, chip->synth_port, chip->synth_port+2,
1787                             OPL3_HW_AUTO, 1, &opl3) < 0) {
1788                 snd_printk(KERN_ERR "azf3328: no OPL3 device at 0x%lx-0x%lx?\n",
1789                            chip->synth_port, chip->synth_port+2 );
1790         } else {
1791                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1792                         goto out_err;
1793                 }
1794         }
1795
1796         sprintf(card->longname, "%s at 0x%lx, irq %i",
1797                 card->shortname, chip->codec_port, chip->irq);
1798
1799         if ((err = snd_card_register(card)) < 0) {
1800                 goto out_err;
1801         }
1802
1803 #ifdef MODULE
1804         printk(
1805 "azt3328: Sound driver for Aztech AZF3328-based soundcards such as PCI168\n"
1806 "azt3328: (hardware was completely undocumented - ZERO support from Aztech).\n"
1807 "azt3328: Feel free to contact andi AT lisas.de for bug reports etc.!\n"
1808 "azt3328: User-scalable sequencer timer set to %dHz (1024000Hz / %d).\n",
1809         1024000 / seqtimer_scaling, seqtimer_scaling);
1810 #endif
1811
1812         if (snd_azf3328_config_joystick(chip, dev) < 0)
1813                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1814                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1815
1816         pci_set_drvdata(pci, card);
1817         dev++;
1818
1819         err = 0;
1820         goto out;
1821
1822 out_err:
1823         snd_card_free(card);
1824
1825 out:
1826         snd_azf3328_dbgcallleave();
1827         return err;
1828 }
1829
1830 static void __devexit
1831 snd_azf3328_remove(struct pci_dev *pci)
1832 {
1833         snd_azf3328_dbgcallenter();
1834         snd_card_free(pci_get_drvdata(pci));
1835         pci_set_drvdata(pci, NULL);
1836         snd_azf3328_dbgcallleave();
1837 }
1838
1839 static struct pci_driver driver = {
1840         .name = "AZF3328",
1841         .owner = THIS_MODULE,
1842         .id_table = snd_azf3328_ids,
1843         .probe = snd_azf3328_probe,
1844         .remove = __devexit_p(snd_azf3328_remove),
1845 };
1846
1847 static int __init
1848 alsa_card_azf3328_init(void)
1849 {
1850         int err;
1851         snd_azf3328_dbgcallenter();
1852         err = pci_register_driver(&driver);
1853         snd_azf3328_dbgcallleave();
1854         return err;
1855 }
1856
1857 static void __exit
1858 alsa_card_azf3328_exit(void)
1859 {
1860         snd_azf3328_dbgcallenter();
1861         pci_unregister_driver(&driver);
1862         snd_azf3328_dbgcallleave();
1863 }
1864
1865 module_init(alsa_card_azf3328_init)
1866 module_exit(alsa_card_azf3328_exit)