sound/pci/azt3328.c

   1 /*
   2  *  azt3328.c - driver for Aztech AZF3328 based soundcards (e.g. PCI168).
   3  *  Copyright (C) 2002, 2005, 2006, 2007 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 SB 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  *    Note that "conformant" != "compliant"!! this chip's mixer register layout
  43  *    *differs* from the standard AC97 layout:
  44  *    they chose to not implement the headphone register (which is not a
  45  *    problem since it's merely optional), yet when doing this, they committed
  46  *    the grave sin of letting other registers follow immediately instead of
  47  *    keeping a headphone dummy register, thereby shifting the mixer register
  48  *    addresses illegally. So far unfortunately it looks like the very flexible
  49  *    ALSA AC97 support is still not enough to easily compensate for such a
  50  *    grave layout violation despite all tweaks and quirks mechanisms it offers.
  51  *  - builtin genuine OPL3
  52  *  - full duplex 16bit playback/record at independent sampling rate
  53  *  - MPU401 (+ legacy address support) FIXME: how to enable legacy addr??
  54  *  - game port (legacy address support)
  55  *  - builtin 3D enhancement (said to be YAMAHA Ymersion)
  56  *  - builtin DirectInput support, helps reduce CPU overhead (interrupt-driven
  57  *    features supported)
  58  *  - built-in General DirectX timer having a 20 bits counter
  59  *    with 1us resolution (see below!)
  60  *  - I2S serial port for external DAC
  61  *  - supports 33MHz PCI spec 2.1, PCI power management 1.0, compliant with ACPI
  62  *  - supports hardware volume control
  63  *  - single chip low cost solution (128 pin QFP)
  64  *  - supports programmable Sub-vendor and Sub-system ID
  65  *    required for Microsoft's logo compliance (FIXME: where?)
  66  *  - PCI168 AP(W) card: power amplifier with 4 Watts/channel at 4 Ohms
  67  *
  68  *  Note that this driver now is actually *better* than the Windows driver,
  69  *  since it additionally supports the card's 1MHz DirectX timer - just try
  70  *  the following snd-seq module parameters etc.:
  71  *  - options snd-seq seq_default_timer_class=2 seq_default_timer_sclass=0
  72  *    seq_default_timer_card=0 seq_client_load=1 seq_default_timer_device=0
  73  *    seq_default_timer_subdevice=0 seq_default_timer_resolution=1000000
  74  *  - "timidity -iAv -B2,8 -Os -EFreverb=0"
  75  *  - "pmidi -p 128:0 jazz.mid"
  76  *
  77  *  Certain PCI versions of this card are susceptible to DMA traffic underruns
  78  *  in some systems (resulting in sound crackling/clicking/popping),
  79  *  probably because they don't have a DMA FIFO buffer or so.
  80  *  Overview (PCI ID/PCI subID/PCI rev.):
  81  *  - no DMA crackling on SiS735: 0x50DC/0x1801/16
  82  *  - unknown performance: 0x50DC/0x1801/10
  83  *    (well, it's not bad on an Athlon 1800 with now very optimized IRQ handler)
  84  *
  85  *  Crackling happens with VIA chipsets or, in my case, an SiS735, which is
  86  *  supposed to be very fast and supposed to get rid of crackling much
  87  *  better than a VIA, yet ironically I still get crackling, like many other
  88  *  people with the same chipset.
  89  *  Possible remedies:
  90  *  - plug card into a different PCI slot, preferrably one that isn't shared
  91  *    too much (this helps a lot, but not completely!)
  92  *  - get rid of PCI VGA card, use AGP instead
  93  *  - upgrade or downgrade BIOS
  94  *  - fiddle with PCI latency settings (setpci -v -s BUSID latency_timer=XX)
  95  *    Not too helpful.
  96  *  - Disable ACPI/power management/"Auto Detect RAM/PCI Clk" in BIOS
  97  *
  98  * BUGS
  99  *  - full-duplex might *still* be problematic, not fully tested recently
 100  *  - (non-bug) "Bass/Treble or 3D settings don't work" - they do get evaluated
 101  *    if you set PCM output switch to "pre 3D" instead of "post 3D".
 102  *    If this can't be set, then get a mixer application that Isn't Stupid (tm)
 103  *    (e.g. kmix, gamix) - unfortunately several are!!
 104  *
 105  * TODO
 106  *  - test MPU401 MIDI playback etc.
 107  *  - add some power micro-management (disable various units of the card
 108  *    as long as they're unused). However this requires I/O ports which I
 109  *    haven't figured out yet and which thus might not even exist...
 110  *    The standard suspend/resume functionality could probably make use of
 111  *    some improvement, too...
 112  *  - figure out what all unknown port bits are responsible for
 113  *  - figure out some cleverly evil scheme to possibly make ALSA AC97 code
 114  *    fully accept our quite incompatible ""AC97"" mixer and thus save some
 115  *    code (but I'm not too optimistic that doing this is possible at all)
 116  */
 117
 118 #include <asm/io.h>
 119 #include <linux/init.h>
 120 #include <linux/pci.h>
 121 #include <linux/delay.h>
 122 #include <linux/slab.h>
 123 #include <linux/gameport.h>
 124 #include <linux/moduleparam.h>
 125 #include <linux/dma-mapping.h>
 126 #include <sound/core.h>
 127 #include <sound/control.h>
 128 #include <sound/pcm.h>
 129 #include <sound/rawmidi.h>
 130 #include <sound/mpu401.h>
 131 #include <sound/opl3.h>
 132 #include <sound/initval.h>
 133 #include "azt3328.h"
 134
 135 MODULE_AUTHOR("Andreas Mohr <andi AT lisas.de>");
 136 MODULE_DESCRIPTION("Aztech AZF3328 (PCI168)");
 137 MODULE_LICENSE("GPL");
 138 MODULE_SUPPORTED_DEVICE("{{Aztech,AZF3328}}");
 139
 140 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
 141 #define SUPPORT_JOYSTICK 1
 142 #endif
 143
 144 #define DEBUG_MISC      0
 145 #define DEBUG_CALLS     0
 146 #define DEBUG_MIXER     0
 147 #define DEBUG_PLAY_REC  0
 148 #define DEBUG_IO        0
 149 #define DEBUG_TIMER     0
 150 #define MIXER_TESTING   0
 151
 152 #if DEBUG_MISC
 153 #define snd_azf3328_dbgmisc(format, args...) printk(KERN_ERR format, ##args)
 154 #else
 155 #define snd_azf3328_dbgmisc(format, args...)
 156 #endif
 157
 158 #if DEBUG_CALLS
 159 #define snd_azf3328_dbgcalls(format, args...) printk(format, ##args)
 160 #define snd_azf3328_dbgcallenter() printk(KERN_ERR "--> %s\n", __FUNCTION__)
 161 #define snd_azf3328_dbgcallleave() printk(KERN_ERR "<-- %s\n", __FUNCTION__)
 162 #else
 163 #define snd_azf3328_dbgcalls(format, args...)
 164 #define snd_azf3328_dbgcallenter()
 165 #define snd_azf3328_dbgcallleave()
 166 #endif
 167
 168 #if DEBUG_MIXER
 169 #define snd_azf3328_dbgmixer(format, args...) printk(format, ##args)
 170 #else
 171 #define snd_azf3328_dbgmixer(format, args...)
 172 #endif
 173
 174 #if DEBUG_PLAY_REC
 175 #define snd_azf3328_dbgplay(format, args...) printk(KERN_ERR format, ##args)
 176 #else
 177 #define snd_azf3328_dbgplay(format, args...)
 178 #endif
 179
 180 #if DEBUG_MISC
 181 #define snd_azf3328_dbgtimer(format, args...) printk(KERN_ERR format, ##args)
 182 #else
 183 #define snd_azf3328_dbgtimer(format, args...)
 184 #endif
 185
 186 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 187 module_param_array(index, int, NULL, 0444);
 188 MODULE_PARM_DESC(index, "Index value for AZF3328 soundcard.");
 189
 190 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 191 module_param_array(id, charp, NULL, 0444);
 192 MODULE_PARM_DESC(id, "ID string for AZF3328 soundcard.");
 193
 194 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
 195 module_param_array(enable, bool, NULL, 0444);
 196 MODULE_PARM_DESC(enable, "Enable AZF3328 soundcard.");
 197
 198 #ifdef SUPPORT_JOYSTICK
 199 static int joystick[SNDRV_CARDS];
 200 module_param_array(joystick, bool, NULL, 0444);
 201 MODULE_PARM_DESC(joystick, "Enable joystick for AZF3328 soundcard.");
 202 #endif
 203
 204 static int seqtimer_scaling = 128;
 205 module_param(seqtimer_scaling, int, 0444);
 206 MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (lockup danger!). Default 128.");
 207
 208 struct snd_azf3328 {
 209         /* often-used fields towards beginning, then grouped */
 210         unsigned long codec_port;
 211         unsigned long io2_port;
 212         unsigned long mpu_port;
 213         unsigned long synth_port;
 214         unsigned long mixer_port;
 215
 216         spinlock_t reg_lock;
 217
 218         struct snd_timer *timer;
 219
 220         struct snd_pcm *pcm;
 221         struct snd_pcm_substream *playback_substream;
 222         struct snd_pcm_substream *capture_substream;
 223         unsigned int is_playing;
 224         unsigned int is_recording;
 225
 226         struct snd_card *card;
 227         struct snd_rawmidi *rmidi;
 228
 229 #ifdef SUPPORT_JOYSTICK
 230         struct gameport *gameport;
 231 #endif
 232
 233         struct pci_dev *pci;
 234         int irq;
 235
 236 #ifdef CONFIG_PM
 237         /* register value containers for power management
 238          * Note: not always full I/O range preserved (just like Win driver!) */
 239         u16 saved_regs_codec [AZF_IO_SIZE_CODEC_PM / 2];
 240         u16 saved_regs_io2   [AZF_IO_SIZE_IO2_PM / 2];
 241         u16 saved_regs_mpu   [AZF_IO_SIZE_MPU_PM / 2];
 242         u16 saved_regs_synth[AZF_IO_SIZE_SYNTH_PM / 2];
 243         u16 saved_regs_mixer[AZF_IO_SIZE_MIXER_PM / 2];
 244 #endif
 245 };
 246
 247 static const struct pci_device_id snd_azf3328_ids[] = {
 248         { 0x122D, 0x50DC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* PCI168/3328 */
 249         { 0x122D, 0x80DA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* 3328 */
 250         { 0, }
 251 };
 252
 253 MODULE_DEVICE_TABLE(pci, snd_azf3328_ids);
 254
 255 static inline void
 256 snd_azf3328_codec_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 257 {
 258         outb(value, chip->codec_port + reg);
 259 }
 260
 261 static inline u8
 262 snd_azf3328_codec_inb(const struct snd_azf3328 *chip, int reg)
 263 {
 264         return inb(chip->codec_port + reg);
 265 }
 266
 267 static inline void
 268 snd_azf3328_codec_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 269 {
 270         outw(value, chip->codec_port + reg);
 271 }
 272
 273 static inline u16
 274 snd_azf3328_codec_inw(const struct snd_azf3328 *chip, int reg)
 275 {
 276         return inw(chip->codec_port + reg);
 277 }
 278
 279 static inline void
 280 snd_azf3328_codec_outl(const struct snd_azf3328 *chip, int reg, u32 value)
 281 {
 282         outl(value, chip->codec_port + reg);
 283 }
 284
 285 static inline void
 286 snd_azf3328_io2_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 287 {
 288         outb(value, chip->io2_port + reg);
 289 }
 290
 291 static inline u8
 292 snd_azf3328_io2_inb(const struct snd_azf3328 *chip, int reg)
 293 {
 294         return inb(chip->io2_port + reg);
 295 }
 296
 297 static inline void
 298 snd_azf3328_mixer_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 299 {
 300         outw(value, chip->mixer_port + reg);
 301 }
 302
 303 static inline u16
 304 snd_azf3328_mixer_inw(const struct snd_azf3328 *chip, int reg)
 305 {
 306         return inw(chip->mixer_port + reg);
 307 }
 308
 309 static void
 310 snd_azf3328_mixer_set_mute(const struct snd_azf3328 *chip, int reg, int do_mute)
 311 {
 312         unsigned long portbase = chip->mixer_port + reg + 1;
 313         unsigned char oldval;
 314
 315         /* the mute bit is on the *second* (i.e. right) register of a
 316          * left/right channel setting */
 317         oldval = inb(portbase);
 318         if (do_mute)
 319                 oldval |= 0x80;
 320         else
 321                 oldval &= ~0x80;
 322         outb(oldval, portbase);
 323 }
 324
 325 static void
 326 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)
 327 {
 328         unsigned long portbase = chip->mixer_port + reg;
 329         unsigned char curr_vol_left = 0, curr_vol_right = 0;
 330         int left_done = 0, right_done = 0;
 331
 332         snd_azf3328_dbgcallenter();
 333         if (chan_sel & SET_CHAN_LEFT)
 334                 curr_vol_left  = inb(portbase + 1);
 335         else
 336                 left_done = 1;
 337         if (chan_sel & SET_CHAN_RIGHT)
 338                 curr_vol_right = inb(portbase + 0);
 339         else
 340                 right_done = 1;
 341
 342         /* take care of muting flag (0x80) contained in left channel */
 343         if (curr_vol_left & 0x80)
 344                 dst_vol_left |= 0x80;
 345         else
 346                 dst_vol_left &= ~0x80;
 347
 348         do {
 349                 if (!left_done) {
 350                         if (curr_vol_left > dst_vol_left)
 351                                 curr_vol_left--;
 352                         else
 353                         if (curr_vol_left < dst_vol_left)
 354                                 curr_vol_left++;
 355                         else
 356                             left_done = 1;
 357                         outb(curr_vol_left, portbase + 1);
 358                 }
 359                 if (!right_done) {
 360                         if (curr_vol_right > dst_vol_right)
 361                                 curr_vol_right--;
 362                         else
 363                         if (curr_vol_right < dst_vol_right)
 364                                 curr_vol_right++;
 365                         else
 366                             right_done = 1;
 367                         /* during volume change, the right channel is crackling
 368                          * somewhat more than the left channel, unfortunately.
 369                          * This seems to be a hardware issue. */
 370                         outb(curr_vol_right, portbase + 0);
 371                 }
 372                 if (delay)
 373                         mdelay(delay);
 374         } while ((!left_done) || (!right_done));
 375         snd_azf3328_dbgcallleave();
 376 }
 377
 378 /*
 379  * general mixer element
 380  */
 381 struct azf3328_mixer_reg {
 382         unsigned int reg;
 383         unsigned int lchan_shift, rchan_shift;
 384         unsigned int mask;
 385         unsigned int invert: 1;
 386         unsigned int stereo: 1;
 387         unsigned int enum_c: 4;
 388 };
 389
 390 #define COMPOSE_MIXER_REG(reg,lchan_shift,rchan_shift,mask,invert,stereo,enum_c) \
 391  ((reg) | (lchan_shift << 8) | (rchan_shift << 12) | \
 392   (mask << 16) | \
 393   (invert << 24) | \
 394   (stereo << 25) | \
 395   (enum_c << 26))
 396
 397 static void snd_azf3328_mixer_reg_decode(struct azf3328_mixer_reg *r, unsigned long val)
 398 {
 399         r->reg = val & 0xff;
 400         r->lchan_shift = (val >> 8) & 0x0f;
 401         r->rchan_shift = (val >> 12) & 0x0f;
 402         r->mask = (val >> 16) & 0xff;
 403         r->invert = (val >> 24) & 1;
 404         r->stereo = (val >> 25) & 1;
 405         r->enum_c = (val >> 26) & 0x0f;
 406 }
 407
 408 /*
 409  * mixer switches/volumes
 410  */
 411
 412 #define AZF3328_MIXER_SWITCH(xname, reg, shift, invert) \
 413 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 414   .info = snd_azf3328_info_mixer, \
 415   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 416   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0x1, invert, 0, 0), \
 417 }
 418
 419 #define AZF3328_MIXER_VOL_STEREO(xname, reg, mask, invert) \
 420 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 421   .info = snd_azf3328_info_mixer, \
 422   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 423   .private_value = COMPOSE_MIXER_REG(reg, 8, 0, mask, invert, 1, 0), \
 424 }
 425
 426 #define AZF3328_MIXER_VOL_MONO(xname, reg, mask, is_right_chan) \
 427 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 428   .info = snd_azf3328_info_mixer, \
 429   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 430   .private_value = COMPOSE_MIXER_REG(reg, is_right_chan ? 0 : 8, 0, mask, 1, 0, 0), \
 431 }
 432
 433 #define AZF3328_MIXER_VOL_SPECIAL(xname, reg, mask, shift, invert) \
 434 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 435   .info = snd_azf3328_info_mixer, \
 436   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 437   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, mask, invert, 0, 0), \
 438 }
 439
 440 #define AZF3328_MIXER_ENUM(xname, reg, enum_c, shift) \
 441 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 442   .info = snd_azf3328_info_mixer_enum, \
 443   .get = snd_azf3328_get_mixer_enum, .put = snd_azf3328_put_mixer_enum, \
 444   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0, 0, 0, enum_c), \
 445 }
 446
 447 static int
 448 snd_azf3328_info_mixer(struct snd_kcontrol *kcontrol,
 449                        struct snd_ctl_elem_info *uinfo)
 450 {
 451         struct azf3328_mixer_reg reg;
 452
 453         snd_azf3328_dbgcallenter();
 454         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 455         uinfo->type = reg.mask == 1 ?
 456                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 457         uinfo->count = reg.stereo + 1;
 458         uinfo->value.integer.min = 0;
 459         uinfo->value.integer.max = reg.mask;
 460         snd_azf3328_dbgcallleave();
 461         return 0;
 462 }
 463
 464 static int
 465 snd_azf3328_get_mixer(struct snd_kcontrol *kcontrol,
 466                       struct snd_ctl_elem_value *ucontrol)
 467 {
 468         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 469         struct azf3328_mixer_reg reg;
 470         unsigned int oreg, val;
 471
 472         snd_azf3328_dbgcallenter();
 473         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 474
 475         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 476         val = (oreg >> reg.lchan_shift) & reg.mask;
 477         if (reg.invert)
 478                 val = reg.mask - val;
 479         ucontrol->value.integer.value[0] = val;
 480         if (reg.stereo) {
 481                 val = (oreg >> reg.rchan_shift) & reg.mask;
 482                 if (reg.invert)
 483                         val = reg.mask - val;
 484                 ucontrol->value.integer.value[1] = val;
 485         }
 486         snd_azf3328_dbgmixer("get: %02x is %04x -> vol %02lx|%02lx "
 487                              "(shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
 488                 reg.reg, oreg,
 489                 ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 490                 reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
 491         snd_azf3328_dbgcallleave();
 492         return 0;
 493 }
 494
 495 static int
 496 snd_azf3328_put_mixer(struct snd_kcontrol *kcontrol,
 497                       struct snd_ctl_elem_value *ucontrol)
 498 {
 499         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 500         struct azf3328_mixer_reg reg;
 501         unsigned int oreg, nreg, val;
 502
 503         snd_azf3328_dbgcallenter();
 504         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 505         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 506         val = ucontrol->value.integer.value[0] & reg.mask;
 507         if (reg.invert)
 508                 val = reg.mask - val;
 509         nreg = oreg & ~(reg.mask << reg.lchan_shift);
 510         nreg |= (val << reg.lchan_shift);
 511         if (reg.stereo) {
 512                 val = ucontrol->value.integer.value[1] & reg.mask;
 513                 if (reg.invert)
 514                         val = reg.mask - val;
 515                 nreg &= ~(reg.mask << reg.rchan_shift);
 516                 nreg |= (val << reg.rchan_shift);
 517         }
 518         if (reg.mask >= 0x07) /* it's a volume control, so better take care */
 519                 snd_azf3328_mixer_write_volume_gradually(
 520                         chip, reg.reg, nreg >> 8, nreg & 0xff,
 521                         /* just set both channels, doesn't matter */
 522                         SET_CHAN_LEFT|SET_CHAN_RIGHT,
 523                         0);
 524         else
 525                 snd_azf3328_mixer_outw(chip, reg.reg, nreg);
 526
 527         snd_azf3328_dbgmixer("put: %02x to %02lx|%02lx, "
 528                              "oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
 529                 reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 530                 oreg, reg.lchan_shift, reg.rchan_shift,
 531                 nreg, snd_azf3328_mixer_inw(chip, reg.reg));
 532         snd_azf3328_dbgcallleave();
 533         return (nreg != oreg);
 534 }
 535
 536 static int
 537 snd_azf3328_info_mixer_enum(struct snd_kcontrol *kcontrol,
 538                             struct snd_ctl_elem_info *uinfo)
 539 {
 540         static const char * const texts1[] = {
 541                 "Mic1", "Mic2"
 542         };
 543         static const char * const texts2[] = {
 544                 "Mix", "Mic"
 545         };
 546         static const char * const texts3[] = {
 547                 "Mic", "CD", "Video", "Aux",
 548                 "Line", "Mix", "Mix Mono", "Phone"
 549         };
 550         static const char * const texts4[] = {
 551                 "pre 3D", "post 3D"
 552         };
 553         struct azf3328_mixer_reg reg;
 554
 555         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 556         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 557         uinfo->count = (reg.reg == IDX_MIXER_REC_SELECT) ? 2 : 1;
 558         uinfo->value.enumerated.items = reg.enum_c;
 559         if (uinfo->value.enumerated.item > reg.enum_c - 1U)
 560                 uinfo->value.enumerated.item = reg.enum_c - 1U;
 561         if (reg.reg == IDX_MIXER_ADVCTL2) {
 562                 switch(reg.lchan_shift) {
 563                 case 8: /* modem out sel */
 564                         strcpy(uinfo->value.enumerated.name, texts1[uinfo->value.enumerated.item]);
 565                         break;
 566                 case 9: /* mono sel source */
 567                         strcpy(uinfo->value.enumerated.name, texts2[uinfo->value.enumerated.item]);
 568                         break;
 569                 case 15: /* PCM Out Path */
 570                         strcpy(uinfo->value.enumerated.name, texts4[uinfo->value.enumerated.item]);
 571                         break;
 572                 }
 573         } else
 574                 strcpy(uinfo->value.enumerated.name, texts3[uinfo->value.enumerated.item]
 575 );
 576         return 0;
 577 }
 578
 579 static int
 580 snd_azf3328_get_mixer_enum(struct snd_kcontrol *kcontrol,
 581                            struct snd_ctl_elem_value *ucontrol)
 582 {
 583         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 584         struct azf3328_mixer_reg reg;
 585         unsigned short val;
 586
 587         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 588         val = snd_azf3328_mixer_inw(chip, reg.reg);
 589         if (reg.reg == IDX_MIXER_REC_SELECT) {
 590                 ucontrol->value.enumerated.item[0] = (val >> 8) & (reg.enum_c - 1);
 591                 ucontrol->value.enumerated.item[1] = (val >> 0) & (reg.enum_c - 1);
 592         } else
 593                 ucontrol->value.enumerated.item[0] = (val >> reg.lchan_shift) & (reg.enum_c - 1);
 594
 595         snd_azf3328_dbgmixer("get_enum: %02x is %04x -> %d|%d (shift %02d, enum_c %d)\n",
 596                 reg.reg, val, ucontrol->value.enumerated.item[0], ucontrol->value.enumerated.item[1],
 597                 reg.lchan_shift, reg.enum_c);
 598         return 0;
 599 }
 600
 601 static int
 602 snd_azf3328_put_mixer_enum(struct snd_kcontrol *kcontrol,
 603                            struct snd_ctl_elem_value *ucontrol)
 604 {
 605         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 606         struct azf3328_mixer_reg reg;
 607         unsigned int oreg, nreg, val;
 608
 609         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 610         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 611         val = oreg;
 612         if (reg.reg == IDX_MIXER_REC_SELECT) {
 613                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U ||
 614                 ucontrol->value.enumerated.item[1] > reg.enum_c - 1U)
 615                         return -EINVAL;
 616                 val = (ucontrol->value.enumerated.item[0] << 8) |
 617                       (ucontrol->value.enumerated.item[1] << 0);
 618         } else {
 619                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U)
 620                         return -EINVAL;
 621                 val &= ~((reg.enum_c - 1) << reg.lchan_shift);
 622                 val |= (ucontrol->value.enumerated.item[0] << reg.lchan_shift);
 623         }
 624         snd_azf3328_mixer_outw(chip, reg.reg, val);
 625         nreg = val;
 626
 627         snd_azf3328_dbgmixer("put_enum: %02x to %04x, oreg %04x\n", reg.reg, val, oreg);
 628         return (nreg != oreg);
 629 }
 630
 631 static struct snd_kcontrol_new snd_azf3328_mixer_controls[] __devinitdata = {
 632         AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
 633         AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
 634         AZF3328_MIXER_SWITCH("Wave Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),
 635         AZF3328_MIXER_VOL_STEREO("Wave Playback Volume", IDX_MIXER_WAVEOUT, 0x1f, 1),
 636         AZF3328_MIXER_SWITCH("Wave 3D Bypass Playback Switch", IDX_MIXER_ADVCTL2, 7, 1),
 637         AZF3328_MIXER_SWITCH("FM Playback Switch", IDX_MIXER_FMSYNTH, 15, 1),
 638         AZF3328_MIXER_VOL_STEREO("FM Playback Volume", IDX_MIXER_FMSYNTH, 0x1f, 1),
 639         AZF3328_MIXER_SWITCH("CD Playback Switch", IDX_MIXER_CDAUDIO, 15, 1),
 640         AZF3328_MIXER_VOL_STEREO("CD Playback Volume", IDX_MIXER_CDAUDIO, 0x1f, 1),
 641         AZF3328_MIXER_SWITCH("Capture Switch", IDX_MIXER_REC_VOLUME, 15, 1),
 642         AZF3328_MIXER_VOL_STEREO("Capture Volume", IDX_MIXER_REC_VOLUME, 0x0f, 0),
 643         AZF3328_MIXER_ENUM("Capture Source", IDX_MIXER_REC_SELECT, 8, 0),
 644         AZF3328_MIXER_SWITCH("Mic Playback Switch", IDX_MIXER_MIC, 15, 1),
 645         AZF3328_MIXER_VOL_MONO("Mic Playback Volume", IDX_MIXER_MIC, 0x1f, 1),
 646         AZF3328_MIXER_SWITCH("Mic Boost (+20dB)", IDX_MIXER_MIC, 6, 0),
 647         AZF3328_MIXER_SWITCH("Line Playback Switch", IDX_MIXER_LINEIN, 15, 1),
 648         AZF3328_MIXER_VOL_STEREO("Line Playback Volume", IDX_MIXER_LINEIN, 0x1f, 1),
 649         AZF3328_MIXER_SWITCH("PC Speaker Playback Switch", IDX_MIXER_PCBEEP, 15, 1),
 650         AZF3328_MIXER_VOL_SPECIAL("PC Speaker Playback Volume", IDX_MIXER_PCBEEP, 0x0f, 1, 1),
 651         AZF3328_MIXER_SWITCH("Video Playback Switch", IDX_MIXER_VIDEO, 15, 1),
 652         AZF3328_MIXER_VOL_STEREO("Video Playback Volume", IDX_MIXER_VIDEO, 0x1f, 1),
 653         AZF3328_MIXER_SWITCH("Aux Playback Switch", IDX_MIXER_AUX, 15, 1),
 654         AZF3328_MIXER_VOL_STEREO("Aux Playback Volume", IDX_MIXER_AUX, 0x1f, 1),
 655         AZF3328_MIXER_SWITCH("Modem Playback Switch", IDX_MIXER_MODEMOUT, 15, 1),
 656         AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
 657         AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
 658         AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
 659         AZF3328_MIXER_ENUM("Mic Select", IDX_MIXER_ADVCTL2, 2, 8),
 660         AZF3328_MIXER_ENUM("Mono Output Select", IDX_MIXER_ADVCTL2, 2, 9),
 661         AZF3328_MIXER_ENUM("PCM Output Route", IDX_MIXER_ADVCTL2, 2, 15), /* PCM Out Path, place in front since it controls *both* 3D and Bass/Treble! */
 662         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
 663         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
 664         AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
 665         AZF3328_MIXER_VOL_SPECIAL("3D Control - Width", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
 666         AZF3328_MIXER_VOL_SPECIAL("3D Control - Depth", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
 667 #if MIXER_TESTING
 668         AZF3328_MIXER_SWITCH("0", IDX_MIXER_ADVCTL2, 0, 0),
 669         AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
 670         AZF3328_MIXER_SWITCH("2", IDX_MIXER_ADVCTL2, 2, 0),
 671         AZF3328_MIXER_SWITCH("3", IDX_MIXER_ADVCTL2, 3, 0),
 672         AZF3328_MIXER_SWITCH("4", IDX_MIXER_ADVCTL2, 4, 0),
 673         AZF3328_MIXER_SWITCH("5", IDX_MIXER_ADVCTL2, 5, 0),
 674         AZF3328_MIXER_SWITCH("6", IDX_MIXER_ADVCTL2, 6, 0),
 675         AZF3328_MIXER_SWITCH("7", IDX_MIXER_ADVCTL2, 7, 0),
 676         AZF3328_MIXER_SWITCH("8", IDX_MIXER_ADVCTL2, 8, 0),
 677         AZF3328_MIXER_SWITCH("9", IDX_MIXER_ADVCTL2, 9, 0),
 678         AZF3328_MIXER_SWITCH("10", IDX_MIXER_ADVCTL2, 10, 0),
 679         AZF3328_MIXER_SWITCH("11", IDX_MIXER_ADVCTL2, 11, 0),
 680         AZF3328_MIXER_SWITCH("12", IDX_MIXER_ADVCTL2, 12, 0),
 681         AZF3328_MIXER_SWITCH("13", IDX_MIXER_ADVCTL2, 13, 0),
 682         AZF3328_MIXER_SWITCH("14", IDX_MIXER_ADVCTL2, 14, 0),
 683         AZF3328_MIXER_SWITCH("15", IDX_MIXER_ADVCTL2, 15, 0),
 684 #endif
 685 };
 686
 687 static u16 __devinitdata snd_azf3328_init_values[][2] = {
 688         { IDX_MIXER_PLAY_MASTER,        MIXER_MUTE_MASK|0x1f1f },
 689         { IDX_MIXER_MODEMOUT,           MIXER_MUTE_MASK|0x1f1f },
 690         { IDX_MIXER_BASSTREBLE,         0x0000 },
 691         { IDX_MIXER_PCBEEP,             MIXER_MUTE_MASK|0x1f1f },
 692         { IDX_MIXER_MODEMIN,            MIXER_MUTE_MASK|0x1f1f },
 693         { IDX_MIXER_MIC,                MIXER_MUTE_MASK|0x001f },
 694         { IDX_MIXER_LINEIN,             MIXER_MUTE_MASK|0x1f1f },
 695         { IDX_MIXER_CDAUDIO,            MIXER_MUTE_MASK|0x1f1f },
 696         { IDX_MIXER_VIDEO,              MIXER_MUTE_MASK|0x1f1f },
 697         { IDX_MIXER_AUX,                MIXER_MUTE_MASK|0x1f1f },
 698         { IDX_MIXER_WAVEOUT,            MIXER_MUTE_MASK|0x1f1f },
 699         { IDX_MIXER_FMSYNTH,            MIXER_MUTE_MASK|0x1f1f },
 700         { IDX_MIXER_REC_VOLUME,         MIXER_MUTE_MASK|0x0707 },
 701 };
 702
 703 static int __devinit
 704 snd_azf3328_mixer_new(struct snd_azf3328 *chip)
 705 {
 706         struct snd_card *card;
 707         const struct snd_kcontrol_new *sw;
 708         unsigned int idx;
 709         int err;
 710
 711         snd_azf3328_dbgcallenter();
 712         snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
 713
 714         card = chip->card;
 715
 716         /* mixer reset */
 717         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
 718
 719         /* mute and zero volume channels */
 720         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_init_values); idx++) {
 721                 snd_azf3328_mixer_outw(chip,
 722                         snd_azf3328_init_values[idx][0],
 723                         snd_azf3328_init_values[idx][1]);
 724         }
 725
 726         /* add mixer controls */
 727         sw = snd_azf3328_mixer_controls;
 728         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_mixer_controls); idx++, sw++) {
 729                 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(sw, chip))) < 0)
 730                         return err;
 731         }
 732         snd_component_add(card, "AZF3328 mixer");
 733         strcpy(card->mixername, "AZF3328 mixer");
 734
 735         snd_azf3328_dbgcallleave();
 736         return 0;
 737 }
 738
 739 static int
 740 snd_azf3328_hw_params(struct snd_pcm_substream *substream,
 741                                  struct snd_pcm_hw_params *hw_params)
 742 {
 743         int res;
 744         snd_azf3328_dbgcallenter();
 745         res = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 746         snd_azf3328_dbgcallleave();
 747         return res;
 748 }
 749
 750 static int
 751 snd_azf3328_hw_free(struct snd_pcm_substream *substream)
 752 {
 753         snd_azf3328_dbgcallenter();
 754         snd_pcm_lib_free_pages(substream);
 755         snd_azf3328_dbgcallleave();
 756         return 0;
 757 }
 758
 759 static void
 760 snd_azf3328_setfmt(struct snd_azf3328 *chip,
 761                                unsigned int reg,
 762                                unsigned int bitrate,
 763                                unsigned int format_width,
 764                                unsigned int channels
 765 )
 766 {
 767         u16 val = 0xff00;
 768         unsigned long flags;
 769
 770         snd_azf3328_dbgcallenter();
 771         switch (bitrate) {
 772         case  4000: val |= SOUNDFORMAT_FREQ_SUSPECTED_4000; break;
 773         case  4800: val |= SOUNDFORMAT_FREQ_SUSPECTED_4800; break;
 774         case  5512: val |= SOUNDFORMAT_FREQ_5510; break; /* the AZF3328 names it "5510" for some strange reason */
 775         case  6620: val |= SOUNDFORMAT_FREQ_6620; break;
 776         case  8000: val |= SOUNDFORMAT_FREQ_8000; break;
 777         case  9600: val |= SOUNDFORMAT_FREQ_9600; break;
 778         case 11025: val |= SOUNDFORMAT_FREQ_11025; break;
 779         case 13240: val |= SOUNDFORMAT_FREQ_SUSPECTED_13240; break;
 780         case 16000: val |= SOUNDFORMAT_FREQ_16000; break;
 781         case 22050: val |= SOUNDFORMAT_FREQ_22050; break;
 782         case 32000: val |= SOUNDFORMAT_FREQ_32000; break;
 783         case 44100: val |= SOUNDFORMAT_FREQ_44100; break;
 784         case 48000: val |= SOUNDFORMAT_FREQ_48000; break;
 785         case 66200: val |= SOUNDFORMAT_FREQ_SUSPECTED_66200; break;
 786         default:
 787                 snd_printk(KERN_WARNING "unknown bitrate %d, assuming 44.1kHz!\n", bitrate);
 788                 val |= SOUNDFORMAT_FREQ_44100;
 789                 break;
 790         }
 791         /* val = 0xff07; 3m27.993s (65301Hz; -> 64000Hz???) hmm, 66120, 65967, 66123 */
 792         /* val = 0xff09; 17m15.098s (13123,478Hz; -> 12000Hz???) hmm, 13237.2Hz? */
 793         /* val = 0xff0a; 47m30.599s (4764,891Hz; -> 4800Hz???) yup, 4803Hz */
 794         /* val = 0xff0c; 57m0.510s (4010,263Hz; -> 4000Hz???) yup, 4003Hz */
 795         /* val = 0xff05; 5m11.556s (... -> 44100Hz) */
 796         /* val = 0xff03; 10m21.529s (21872,463Hz; -> 22050Hz???) */
 797         /* val = 0xff0f; 20m41.883s (10937,993Hz; -> 11025Hz???) */
 798         /* val = 0xff0d; 41m23.135s (5523,600Hz; -> 5512Hz???) */
 799         /* val = 0xff0e; 28m30.777s (8017Hz; -> 8000Hz???) */
 800
 801         if (channels == 2)
 802                 val |= SOUNDFORMAT_FLAG_2CHANNELS;
 803
 804         if (format_width == 16)
 805                 val |= SOUNDFORMAT_FLAG_16BIT;
 806
 807         spin_lock_irqsave(&chip->reg_lock, flags);
 808
 809         /* set bitrate/format */
 810         snd_azf3328_codec_outw(chip, reg, val);
 811
 812         /* changing the bitrate/format settings switches off the
 813          * audio output with an annoying click in case of 8/16bit format change
 814          * (maybe shutting down DAC/ADC?), thus immediately
 815          * do some tweaking to reenable it and get rid of the clicking
 816          * (FIXME: yes, it works, but what exactly am I doing here?? :)
 817          * FIXME: does this have some side effects for full-duplex
 818          * or other dramatic side effects? */
 819         if (reg == IDX_IO_PLAY_SOUNDFORMAT) /* only do it for playback */
 820                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 821                         snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) |
 822                         DMA_PLAY_SOMETHING1 |
 823                         DMA_PLAY_SOMETHING2 |
 824                         SOMETHING_ALMOST_ALWAYS_SET |
 825                         DMA_EPILOGUE_SOMETHING |
 826                         DMA_SOMETHING_ELSE
 827                 );
 828
 829         spin_unlock_irqrestore(&chip->reg_lock, flags);
 830         snd_azf3328_dbgcallleave();
 831 }
 832
 833 static void
 834 snd_azf3328_setdmaa(struct snd_azf3328 *chip,
 835                                 long unsigned int addr,
 836                                 unsigned int count,
 837                                 unsigned int size,
 838                                 int do_recording)
 839 {
 840         unsigned long flags, portbase;
 841         unsigned int is_running;
 842
 843         snd_azf3328_dbgcallenter();
 844         if (do_recording) {
 845                 /* access capture registers, i.e. skip playback reg section */
 846                 portbase = chip->codec_port + 0x20;
 847                 is_running = chip->is_recording;
 848         } else {
 849                 /* access the playback register section */
 850                 portbase = chip->codec_port + 0x00;
 851                 is_running = chip->is_playing;
 852         }
 853
 854         /* AZF3328 uses a two buffer pointer DMA playback approach */
 855         if (!is_running) {
 856                 unsigned long addr_area2;
 857                 unsigned long count_areas, count_tmp; /* width 32bit -- overflow!! */
 858                 count_areas = size/2;
 859                 addr_area2 = addr+count_areas;
 860                 count_areas--; /* max. index */
 861                 snd_azf3328_dbgplay("set DMA: buf1 %08lx[%lu], buf2 %08lx[%lu]\n", addr, count_areas, addr_area2, count_areas);
 862
 863                 /* build combined I/O buffer length word */
 864                 count_tmp = count_areas;
 865                 count_areas |= (count_tmp << 16);
 866                 spin_lock_irqsave(&chip->reg_lock, flags);
 867                 outl(addr, portbase + IDX_IO_PLAY_DMA_START_1);
 868                 outl(addr_area2, portbase + IDX_IO_PLAY_DMA_START_2);
 869                 outl(count_areas, portbase + IDX_IO_PLAY_DMA_LEN_1);
 870                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 871         }
 872         snd_azf3328_dbgcallleave();
 873 }
 874
 875 static int
 876 snd_azf3328_playback_prepare(struct snd_pcm_substream *substream)
 877 {
 878 #if 0
 879         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 880         struct snd_pcm_runtime *runtime = substream->runtime;
 881         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 882         unsigned int count = snd_pcm_lib_period_bytes(substream);
 883 #endif
 884
 885         snd_azf3328_dbgcallenter();
 886 #if 0
 887         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 888                 runtime->rate,
 889                 snd_pcm_format_width(runtime->format),
 890                 runtime->channels);
 891         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 0);
 892 #endif
 893         snd_azf3328_dbgcallleave();
 894         return 0;
 895 }
 896
 897 static int
 898 snd_azf3328_capture_prepare(struct snd_pcm_substream *substream)
 899 {
 900 #if 0
 901         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 902         struct snd_pcm_runtime *runtime = substream->runtime;
 903         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 904         unsigned int count = snd_pcm_lib_period_bytes(substream);
 905 #endif
 906
 907         snd_azf3328_dbgcallenter();
 908 #if 0
 909         snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
 910                 runtime->rate,
 911                 snd_pcm_format_width(runtime->format),
 912                 runtime->channels);
 913         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 1);
 914 #endif
 915         snd_azf3328_dbgcallleave();
 916         return 0;
 917 }
 918
 919 static int
 920 snd_azf3328_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 921 {
 922         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 923         struct snd_pcm_runtime *runtime = substream->runtime;
 924         int result = 0;
 925         unsigned int status1;
 926
 927         snd_azf3328_dbgcalls("snd_azf3328_playback_trigger cmd %d\n", cmd);
 928
 929         switch (cmd) {
 930         case SNDRV_PCM_TRIGGER_START:
 931                 snd_azf3328_dbgplay("START PLAYBACK\n");
 932
 933                 /* mute WaveOut */
 934                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 935
 936                 snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 937                         runtime->rate,
 938                         snd_pcm_format_width(runtime->format),
 939                         runtime->channels);
 940
 941                 spin_lock(&chip->reg_lock);
 942                 /* stop playback */
 943                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 944                 status1 &= ~DMA_RESUME;
 945                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 946
 947                 /* FIXME: clear interrupts or what??? */
 948                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_IRQTYPE, 0xffff);
 949                 spin_unlock(&chip->reg_lock);
 950
 951                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
 952                         snd_pcm_lib_period_bytes(substream),
 953                         snd_pcm_lib_buffer_bytes(substream),
 954                         0);
 955
 956                 spin_lock(&chip->reg_lock);
 957 #ifdef WIN9X
 958                 /* FIXME: enable playback/recording??? */
 959                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
 960                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 961
 962                 /* start playback again */
 963                 /* FIXME: what is this value (0x0010)??? */
 964                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
 965                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 966 #else /* NT4 */
 967                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 968                         0x0000);
 969                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 970                         DMA_PLAY_SOMETHING1);
 971                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 972                         DMA_PLAY_SOMETHING1 |
 973                         DMA_PLAY_SOMETHING2);
 974                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 975                         DMA_RESUME |
 976                         SOMETHING_ALMOST_ALWAYS_SET |
 977                         DMA_EPILOGUE_SOMETHING |
 978                         DMA_SOMETHING_ELSE);
 979 #endif
 980                 spin_unlock(&chip->reg_lock);
 981
 982                 /* now unmute WaveOut */
 983                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 984
 985                 chip->is_playing = 1;
 986                 snd_azf3328_dbgplay("STARTED PLAYBACK\n");
 987                 break;
 988         case SNDRV_PCM_TRIGGER_RESUME:
 989                 snd_azf3328_dbgplay("RESUME PLAYBACK\n");
 990                 /* resume playback if we were active */
 991                 if (chip->is_playing)
 992                         snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 993                                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) | DMA_RESUME);
 994                 break;
 995         case SNDRV_PCM_TRIGGER_STOP:
 996                 snd_azf3328_dbgplay("STOP PLAYBACK\n");
 997
 998                 /* mute WaveOut */
 999                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
1000
1001                 spin_lock(&chip->reg_lock);
1002                 /* stop playback */
1003                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
1004
1005                 status1 &= ~DMA_RESUME;
1006                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
1007
1008                 /* hmm, is this really required? we're resetting the same bit
1009                  * immediately thereafter... */
1010                 status1 |= DMA_PLAY_SOMETHING1;
1011                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
1012
1013                 status1 &= ~DMA_PLAY_SOMETHING1;
1014                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
1015                 spin_unlock(&chip->reg_lock);
1016
1017                 /* now unmute WaveOut */
1018                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
1019                 chip->is_playing = 0;
1020                 snd_azf3328_dbgplay("STOPPED PLAYBACK\n");
1021                 break;
1022         case SNDRV_PCM_TRIGGER_SUSPEND:
1023                 snd_azf3328_dbgplay("SUSPEND PLAYBACK\n");
1024                 /* make sure playback is stopped */
1025                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
1026                         snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) & ~DMA_RESUME);
1027                 break;
1028         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1029                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1030                 break;
1031         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1032                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1033                 break;
1034         default:
1035                 printk(KERN_ERR "FIXME: unknown trigger mode!\n");
1036                 return -EINVAL;
1037         }
1038
1039         snd_azf3328_dbgcallleave();
1040         return result;
1041 }
1042
1043 /* this is just analogous to playback; I'm not quite sure whether recording
1044  * should actually be triggered like that */
1045 static int
1046 snd_azf3328_capture_trigger(struct snd_pcm_substream *substream, int cmd)
1047 {
1048         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1049         struct snd_pcm_runtime *runtime = substream->runtime;
1050         int result = 0;
1051         unsigned int status1;
1052
1053         snd_azf3328_dbgcalls("snd_azf3328_capture_trigger cmd %d\n", cmd);
1054
1055         switch (cmd) {
1056         case SNDRV_PCM_TRIGGER_START:
1057
1058                 snd_azf3328_dbgplay("START CAPTURE\n");
1059
1060                 snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
1061                         runtime->rate,
1062                         snd_pcm_format_width(runtime->format),
1063                         runtime->channels);
1064
1065                 spin_lock(&chip->reg_lock);
1066                 /* stop recording */
1067                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1068                 status1 &= ~DMA_RESUME;
1069                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1070
1071                 /* FIXME: clear interrupts or what??? */
1072                 snd_azf3328_codec_outw(chip, IDX_IO_REC_IRQTYPE, 0xffff);
1073                 spin_unlock(&chip->reg_lock);
1074
1075                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
1076                         snd_pcm_lib_period_bytes(substream),
1077                         snd_pcm_lib_buffer_bytes(substream),
1078                         1);
1079
1080                 spin_lock(&chip->reg_lock);
1081 #ifdef WIN9X
1082                 /* FIXME: enable playback/recording??? */
1083                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
1084                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1085
1086                 /* start capture again */
1087                 /* FIXME: what is this value (0x0010)??? */
1088                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
1089                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1090 #else
1091                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1092                         0x0000);
1093                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1094                         DMA_PLAY_SOMETHING1);
1095                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1096                         DMA_PLAY_SOMETHING1 |
1097                         DMA_PLAY_SOMETHING2);
1098                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1099                         DMA_RESUME |
1100                         SOMETHING_ALMOST_ALWAYS_SET |
1101                         DMA_EPILOGUE_SOMETHING |
1102                         DMA_SOMETHING_ELSE);
1103 #endif
1104                 spin_unlock(&chip->reg_lock);
1105
1106                 chip->is_recording = 1;
1107                 snd_azf3328_dbgplay("STARTED CAPTURE\n");
1108                 break;
1109         case SNDRV_PCM_TRIGGER_RESUME:
1110                 snd_azf3328_dbgplay("RESUME CAPTURE\n");
1111                 /* resume recording if we were active */
1112                 if (chip->is_recording)
1113                         snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1114                                 snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS) | DMA_RESUME);
1115                 break;
1116         case SNDRV_PCM_TRIGGER_STOP:
1117                 snd_azf3328_dbgplay("STOP CAPTURE\n");
1118
1119                 spin_lock(&chip->reg_lock);
1120                 /* stop recording */
1121                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1122
1123                 status1 &= ~DMA_RESUME;
1124                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1125
1126                 status1 |= DMA_PLAY_SOMETHING1;
1127                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1128
1129                 status1 &= ~DMA_PLAY_SOMETHING1;
1130                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1131                 spin_unlock(&chip->reg_lock);
1132
1133                 chip->is_recording = 0;
1134                 snd_azf3328_dbgplay("STOPPED CAPTURE\n");
1135                 break;
1136         case SNDRV_PCM_TRIGGER_SUSPEND:
1137                 snd_azf3328_dbgplay("SUSPEND CAPTURE\n");
1138                 /* make sure recording is stopped */
1139                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1140                         snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS) & ~DMA_RESUME);
1141                 break;
1142         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1143                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1144                 break;
1145         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1146                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1147                 break;
1148         default:
1149                 printk(KERN_ERR "FIXME: unknown trigger mode!\n");
1150                 return -EINVAL;
1151         }
1152
1153         snd_azf3328_dbgcallleave();
1154         return result;
1155 }
1156
1157 static snd_pcm_uframes_t
1158 snd_azf3328_playback_pointer(struct snd_pcm_substream *substream)
1159 {
1160         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1161         unsigned long bufptr, result;
1162         snd_pcm_uframes_t frmres;
1163
1164 #ifdef QUERY_HARDWARE
1165         bufptr = inl(chip->codec_port+IDX_IO_PLAY_DMA_START_1);
1166 #else
1167         bufptr = substream->runtime->dma_addr;
1168 #endif
1169         result = inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS);
1170
1171         /* calculate offset */
1172         result -= bufptr;
1173         frmres = bytes_to_frames( substream->runtime, result);
1174         snd_azf3328_dbgplay("PLAY @ 0x%8lx, frames %8ld\n", result, frmres);
1175         return frmres;
1176 }
1177
1178 static snd_pcm_uframes_t
1179 snd_azf3328_capture_pointer(struct snd_pcm_substream *substream)
1180 {
1181         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1182         unsigned long bufptr, result;
1183         snd_pcm_uframes_t frmres;
1184
1185 #ifdef QUERY_HARDWARE
1186         bufptr = inl(chip->codec_port+IDX_IO_REC_DMA_START_1);
1187 #else
1188         bufptr = substream->runtime->dma_addr;
1189 #endif
1190         result = inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS);
1191
1192         /* calculate offset */
1193         result -= bufptr;
1194         frmres = bytes_to_frames( substream->runtime, result);
1195         snd_azf3328_dbgplay("REC  @ 0x%8lx, frames %8ld\n", result, frmres);
1196         return frmres;
1197 }
1198
1199 static irqreturn_t
1200 snd_azf3328_interrupt(int irq, void *dev_id)
1201 {
1202         struct snd_azf3328 *chip = dev_id;
1203         u8 status, which;
1204         static unsigned long irq_count;
1205
1206         status = snd_azf3328_codec_inb(chip, IDX_IO_IRQSTATUS);
1207
1208         /* fast path out, to ease interrupt sharing */
1209         if (!(status & (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_MPU401|IRQ_TIMER)))
1210                 return IRQ_NONE; /* must be interrupt for another device */
1211
1212         snd_azf3328_dbgplay("Interrupt %ld!\nIDX_IO_PLAY_FLAGS %04x, IDX_IO_PLAY_IRQTYPE %04x, IDX_IO_IRQSTATUS %04x\n",
1213                 irq_count,
1214                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS),
1215                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_IRQTYPE),
1216                 status);
1217
1218         if (status & IRQ_TIMER) {
1219                 /* snd_azf3328_dbgplay("timer %ld\n", inl(chip->codec_port+IDX_IO_TIMER_VALUE) & TIMER_VALUE_MASK); */
1220                 if (chip->timer)
1221                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1222                 /* ACK timer */
1223                 spin_lock(&chip->reg_lock);
1224                 snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x07);
1225                 spin_unlock(&chip->reg_lock);
1226                 snd_azf3328_dbgplay("azt3328: timer IRQ\n");
1227         }
1228         if (status & IRQ_PLAYBACK) {
1229                 spin_lock(&chip->reg_lock);
1230                 which = snd_azf3328_codec_inb(chip, IDX_IO_PLAY_IRQTYPE);
1231                 /* ack all IRQ types immediately */
1232                 snd_azf3328_codec_outb(chip, IDX_IO_PLAY_IRQTYPE, which);
1233                 spin_unlock(&chip->reg_lock);
1234
1235                 if (chip->pcm && chip->playback_substream) {
1236                         snd_pcm_period_elapsed(chip->playback_substream);
1237                         snd_azf3328_dbgplay("PLAY period done (#%x), @ %x\n",
1238                                 which,
1239                                 inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS));
1240                 } else
1241                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1242                 if (which & IRQ_PLAY_SOMETHING)
1243                         snd_azf3328_dbgplay("azt3328: unknown play IRQ type occurred, please report!\n");
1244         }
1245         if (status & IRQ_RECORDING) {
1246                 spin_lock(&chip->reg_lock);
1247                 which = snd_azf3328_codec_inb(chip, IDX_IO_REC_IRQTYPE);
1248                 /* ack all IRQ types immediately */
1249                 snd_azf3328_codec_outb(chip, IDX_IO_REC_IRQTYPE, which);
1250                 spin_unlock(&chip->reg_lock);
1251
1252                 if (chip->pcm && chip->capture_substream) {
1253                         snd_pcm_period_elapsed(chip->capture_substream);
1254                         snd_azf3328_dbgplay("REC  period done (#%x), @ %x\n",
1255                                 which,
1256                                 inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS));
1257                 } else
1258                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1259                 if (which & IRQ_REC_SOMETHING)
1260                         snd_azf3328_dbgplay("azt3328: unknown rec IRQ type occurred, please report!\n");
1261         }
1262         /* MPU401 has less critical IRQ requirements
1263          * than timer and playback/recording, right? */
1264         if (status & IRQ_MPU401) {
1265                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1266
1267                 /* hmm, do we have to ack the IRQ here somehow?
1268                  * If so, then I don't know how... */
1269                 snd_azf3328_dbgplay("azt3328: MPU401 IRQ\n");
1270         }
1271         irq_count++;
1272         return IRQ_HANDLED;
1273 }
1274
1275 /*****************************************************************/
1276
1277 static const struct snd_pcm_hardware snd_azf3328_playback =
1278 {
1279         /* FIXME!! Correct? */
1280         .info =                 SNDRV_PCM_INFO_MMAP |
1281                                 SNDRV_PCM_INFO_INTERLEAVED |
1282                                 SNDRV_PCM_INFO_MMAP_VALID,
1283         .formats =              SNDRV_PCM_FMTBIT_S8 |
1284                                 SNDRV_PCM_FMTBIT_U8 |
1285                                 SNDRV_PCM_FMTBIT_S16_LE |
1286                                 SNDRV_PCM_FMTBIT_U16_LE,
1287         .rates =                SNDRV_PCM_RATE_5512 |
1288                                 SNDRV_PCM_RATE_8000_48000 |
1289                                 SNDRV_PCM_RATE_KNOT,
1290         .rate_min =             4000,
1291         .rate_max =             66200,
1292         .channels_min =         1,
1293         .channels_max =         2,
1294         .buffer_bytes_max =     65536,
1295         .period_bytes_min =     64,
1296         .period_bytes_max =     65536,
1297         .periods_min =          1,
1298         .periods_max =          1024,
1299         /* FIXME: maybe that card actually has a FIFO?
1300          * Hmm, it seems newer revisions do have one, but we still don't know
1301          * its size... */
1302         .fifo_size =            0,
1303 };
1304
1305 static const struct snd_pcm_hardware snd_azf3328_capture =
1306 {
1307         /* FIXME */
1308         .info =                 SNDRV_PCM_INFO_MMAP |
1309                                 SNDRV_PCM_INFO_INTERLEAVED |
1310                                 SNDRV_PCM_INFO_MMAP_VALID,
1311         .formats =              SNDRV_PCM_FMTBIT_S8 |
1312                                 SNDRV_PCM_FMTBIT_U8 |
1313                                 SNDRV_PCM_FMTBIT_S16_LE |
1314                                 SNDRV_PCM_FMTBIT_U16_LE,
1315         .rates =                SNDRV_PCM_RATE_5512 |
1316                                 SNDRV_PCM_RATE_8000_48000 |
1317                                 SNDRV_PCM_RATE_KNOT,
1318         .rate_min =             4000,
1319         .rate_max =             66200,
1320         .channels_min =         1,
1321         .channels_max =         2,
1322         .buffer_bytes_max =     65536,
1323         .period_bytes_min =     64,
1324         .period_bytes_max =     65536,
1325         .periods_min =          1,
1326         .periods_max =          1024,
1327         .fifo_size =            0,
1328 };
1329
1330
1331 static unsigned int snd_azf3328_fixed_rates[] = {
1332         4000, 4800, 5512, 6620, 8000, 9600, 11025, 13240, 16000, 22050, 32000,
1333         44100, 48000, 66200 };
1334 static struct snd_pcm_hw_constraint_list snd_azf3328_hw_constraints_rates = {
1335         .count = ARRAY_SIZE(snd_azf3328_fixed_rates),
1336         .list = snd_azf3328_fixed_rates,
1337         .mask = 0,
1338 };
1339
1340 /*****************************************************************/
1341
1342 static int
1343 snd_azf3328_playback_open(struct snd_pcm_substream *substream)
1344 {
1345         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1346         struct snd_pcm_runtime *runtime = substream->runtime;
1347
1348         snd_azf3328_dbgcallenter();
1349         chip->playback_substream = substream;
1350         runtime->hw = snd_azf3328_playback;
1351         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1352                                    &snd_azf3328_hw_constraints_rates);
1353         snd_azf3328_dbgcallleave();
1354         return 0;
1355 }
1356
1357 static int
1358 snd_azf3328_capture_open(struct snd_pcm_substream *substream)
1359 {
1360         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1361         struct snd_pcm_runtime *runtime = substream->runtime;
1362
1363         snd_azf3328_dbgcallenter();
1364         chip->capture_substream = substream;
1365         runtime->hw = snd_azf3328_capture;
1366         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1367                                    &snd_azf3328_hw_constraints_rates);
1368         snd_azf3328_dbgcallleave();
1369         return 0;
1370 }
1371
1372 static int
1373 snd_azf3328_playback_close(struct snd_pcm_substream *substream)
1374 {
1375         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1376
1377         snd_azf3328_dbgcallenter();
1378         chip->playback_substream = NULL;
1379         snd_azf3328_dbgcallleave();
1380         return 0;
1381 }
1382
1383 static int
1384 snd_azf3328_capture_close(struct snd_pcm_substream *substream)
1385 {
1386         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1387
1388         snd_azf3328_dbgcallenter();
1389         chip->capture_substream = NULL;
1390         snd_azf3328_dbgcallleave();
1391         return 0;
1392 }
1393
1394 /******************************************************************/
1395
1396 static struct snd_pcm_ops snd_azf3328_playback_ops = {
1397         .open =         snd_azf3328_playback_open,
1398         .close =        snd_azf3328_playback_close,
1399         .ioctl =        snd_pcm_lib_ioctl,
1400         .hw_params =    snd_azf3328_hw_params,
1401         .hw_free =      snd_azf3328_hw_free,
1402         .prepare =      snd_azf3328_playback_prepare,
1403         .trigger =      snd_azf3328_playback_trigger,
1404         .pointer =      snd_azf3328_playback_pointer
1405 };
1406
1407 static struct snd_pcm_ops snd_azf3328_capture_ops = {
1408         .open =         snd_azf3328_capture_open,
1409         .close =        snd_azf3328_capture_close,
1410         .ioctl =        snd_pcm_lib_ioctl,
1411         .hw_params =    snd_azf3328_hw_params,
1412         .hw_free =      snd_azf3328_hw_free,
1413         .prepare =      snd_azf3328_capture_prepare,
1414         .trigger =      snd_azf3328_capture_trigger,
1415         .pointer =      snd_azf3328_capture_pointer
1416 };
1417
1418 static int __devinit
1419 snd_azf3328_pcm(struct snd_azf3328 *chip, int device)
1420 {
1421         struct snd_pcm *pcm;
1422         int err;
1423
1424         snd_azf3328_dbgcallenter();
1425         if ((err = snd_pcm_new(chip->card, "AZF3328 DSP", device, 1, 1, &pcm)) < 0)
1426                 return err;
1427         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_azf3328_playback_ops);
1428         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_azf3328_capture_ops);
1429
1430         pcm->private_data = chip;
1431         pcm->info_flags = 0;
1432         strcpy(pcm->name, chip->card->shortname);
1433         chip->pcm = pcm;
1434
1435         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1436                                               snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1437
1438         snd_azf3328_dbgcallleave();
1439         return 0;
1440 }
1441
1442 /******************************************************************/
1443
1444 #ifdef SUPPORT_JOYSTICK
1445 static int __devinit
1446 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev)
1447 {
1448         struct gameport *gp;
1449         struct resource *r;
1450
1451         if (!joystick[dev])
1452                 return -ENODEV;
1453
1454         if (!(r = request_region(0x200, 8, "AZF3328 gameport"))) {
1455                 printk(KERN_WARNING "azt3328: cannot reserve joystick ports\n");
1456                 return -EBUSY;
1457         }
1458
1459         chip->gameport = gp = gameport_allocate_port();
1460         if (!gp) {
1461                 printk(KERN_ERR "azt3328: cannot allocate memory for gameport\n");
1462                 release_and_free_resource(r);
1463                 return -ENOMEM;
1464         }
1465
1466         gameport_set_name(gp, "AZF3328 Gameport");
1467         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1468         gameport_set_dev_parent(gp, &chip->pci->dev);
1469         gp->io = 0x200;
1470         gameport_set_port_data(gp, r);
1471
1472         snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1473                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) | LEGACY_JOY);
1474
1475         gameport_register_port(chip->gameport);
1476
1477         return 0;
1478 }
1479
1480 static void
1481 snd_azf3328_free_joystick(struct snd_azf3328 *chip)
1482 {
1483         if (chip->gameport) {
1484                 struct resource *r = gameport_get_port_data(chip->gameport);
1485
1486                 gameport_unregister_port(chip->gameport);
1487                 chip->gameport = NULL;
1488                 /* disable gameport */
1489                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1490                                       snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1491                 release_and_free_resource(r);
1492         }
1493 }
1494 #else
1495 static inline int
1496 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev) { return -ENOSYS; }
1497 static inline void
1498 snd_azf3328_free_joystick(struct snd_azf3328 *chip) { }
1499 #endif
1500
1501 /******************************************************************/
1502
1503 static int
1504 snd_azf3328_free(struct snd_azf3328 *chip)
1505 {
1506         if (chip->irq < 0)
1507                 goto __end_hw;
1508
1509         /* reset (close) mixer */
1510         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1); /* first mute master volume */
1511         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
1512
1513         /* interrupt setup - mask everything (FIXME!) */
1514         /* well, at least we know how to disable the timer IRQ */
1515         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00);
1516
1517         synchronize_irq(chip->irq);
1518 __end_hw:
1519         snd_azf3328_free_joystick(chip);
1520         if (chip->irq >= 0)
1521                 free_irq(chip->irq, chip);
1522         pci_release_regions(chip->pci);
1523         pci_disable_device(chip->pci);
1524
1525         kfree(chip);
1526         return 0;
1527 }
1528
1529 static int
1530 snd_azf3328_dev_free(struct snd_device *device)
1531 {
1532         struct snd_azf3328 *chip = device->device_data;
1533         return snd_azf3328_free(chip);
1534 }
1535
1536 /******************************************************************/
1537
1538 /*** NOTE: the physical timer resolution actually is 1024000 ticks per second,
1539  *** but announcing those attributes to user-space would make programs
1540  *** configure the timer to a 1 tick value, resulting in an absolutely fatal
1541  *** timer IRQ storm.
1542  *** Thus I chose to announce a down-scaled virtual timer to the outside and
1543  *** calculate real timer countdown values internally.
1544  *** (the scale factor can be set via module parameter "seqtimer_scaling").
1545  ***/
1546
1547 static int
1548 snd_azf3328_timer_start(struct snd_timer *timer)
1549 {
1550         struct snd_azf3328 *chip;
1551         unsigned long flags;
1552         unsigned int delay;
1553
1554         snd_azf3328_dbgcallenter();
1555         chip = snd_timer_chip(timer);
1556         delay = ((timer->sticks * seqtimer_scaling) - 1) & TIMER_VALUE_MASK;
1557         if (delay < 49) {
1558                 /* uhoh, that's not good, since user-space won't know about
1559                  * this timing tweak
1560                  * (we need to do it to avoid a lockup, though) */
1561
1562                 snd_azf3328_dbgtimer("delay was too low (%d)!\n", delay);
1563                 delay = 49; /* minimum time is 49 ticks */
1564         }
1565         snd_azf3328_dbgtimer("setting timer countdown value %d, add COUNTDOWN|IRQ\n", delay);
1566         delay |= TIMER_ENABLE_COUNTDOWN | TIMER_ENABLE_IRQ;
1567         spin_lock_irqsave(&chip->reg_lock, flags);
1568         snd_azf3328_codec_outl(chip, IDX_IO_TIMER_VALUE, delay);
1569         spin_unlock_irqrestore(&chip->reg_lock, flags);
1570         snd_azf3328_dbgcallleave();
1571         return 0;
1572 }
1573
1574 static int
1575 snd_azf3328_timer_stop(struct snd_timer *timer)
1576 {
1577         struct snd_azf3328 *chip;
1578         unsigned long flags;
1579
1580         snd_azf3328_dbgcallenter();
1581         chip = snd_timer_chip(timer);
1582         spin_lock_irqsave(&chip->reg_lock, flags);
1583         /* disable timer countdown and interrupt */
1584         /* FIXME: should we write TIMER_ACK_IRQ here? */
1585         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0);
1586         spin_unlock_irqrestore(&chip->reg_lock, flags);
1587         snd_azf3328_dbgcallleave();
1588         return 0;
1589 }
1590
1591
1592 static int
1593 snd_azf3328_timer_precise_resolution(struct snd_timer *timer,
1594                                                unsigned long *num, unsigned long *den)
1595 {
1596         snd_azf3328_dbgcallenter();
1597         *num = 1;
1598         *den = 1024000 / seqtimer_scaling;
1599         snd_azf3328_dbgcallleave();
1600         return 0;
1601 }
1602
1603 static struct snd_timer_hardware snd_azf3328_timer_hw = {
1604         .flags = SNDRV_TIMER_HW_AUTO,
1605         .resolution = 977, /* 1000000/1024000 = 0.9765625us */
1606         .ticks = 1024000, /* max tick count, defined by the value register; actually it's not 1024000, but 1048576, but we don't care */
1607         .start = snd_azf3328_timer_start,
1608         .stop = snd_azf3328_timer_stop,
1609         .precise_resolution = snd_azf3328_timer_precise_resolution,
1610 };
1611
1612 static int __devinit
1613 snd_azf3328_timer(struct snd_azf3328 *chip, int device)
1614 {
1615         struct snd_timer *timer = NULL;
1616         struct snd_timer_id tid;
1617         int err;
1618
1619         snd_azf3328_dbgcallenter();
1620         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1621         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1622         tid.card = chip->card->number;
1623         tid.device = device;
1624         tid.subdevice = 0;
1625
1626         snd_azf3328_timer_hw.resolution *= seqtimer_scaling;
1627         snd_azf3328_timer_hw.ticks /= seqtimer_scaling;
1628         if ((err = snd_timer_new(chip->card, "AZF3328", &tid, &timer)) < 0) {
1629                 goto out;
1630         }
1631
1632         strcpy(timer->name, "AZF3328 timer");
1633         timer->private_data = chip;
1634         timer->hw = snd_azf3328_timer_hw;
1635
1636         chip->timer = timer;
1637
1638         err = 0;
1639
1640 out:
1641         snd_azf3328_dbgcallleave();
1642         return err;
1643 }
1644
1645 /******************************************************************/
1646
1647 #if 0
1648 /* check whether a bit can be modified */
1649 static void
1650 snd_azf3328_test_bit(unsigned int reg, int bit)
1651 {
1652         unsigned char val, valoff, valon;
1653
1654         val = inb(reg);
1655
1656         outb(val & ~(1 << bit), reg);
1657         valoff = inb(reg);
1658
1659         outb(val|(1 << bit), reg);
1660         valon = inb(reg);
1661
1662         outb(val, reg);
1663
1664         printk(KERN_ERR "reg %04x bit %d: %02x %02x %02x\n", reg, bit, val, valoff, valon);
1665 }
1666 #endif
1667
1668 #if DEBUG_MISC
1669 static void
1670 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip)
1671 {
1672         u16 tmp;
1673
1674         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);
1675
1676         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));
1677
1678         for (tmp=0; tmp <= 0x01; tmp += 1)
1679                 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));
1680
1681         for (tmp = 0; tmp < AZF_IO_SIZE_CODEC; tmp += 2)
1682                 snd_azf3328_dbgmisc("codec 0x%02x: 0x%04x\n", tmp, snd_azf3328_codec_inw(chip, tmp));
1683
1684         for (tmp = 0; tmp < AZF_IO_SIZE_MIXER; tmp += 2)
1685                 snd_azf3328_dbgmisc("mixer 0x%02x: 0x%04x\n", tmp, snd_azf3328_mixer_inw(chip, tmp));
1686 }
1687 #else
1688 static inline void
1689 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip) {}
1690 #endif
1691
1692 static int __devinit
1693 snd_azf3328_create(struct snd_card *card,
1694                                          struct pci_dev *pci,
1695                                          unsigned long device_type,
1696                                          struct snd_azf3328 ** rchip)
1697 {
1698         struct snd_azf3328 *chip;
1699         int err;
1700         static struct snd_device_ops ops = {
1701                 .dev_free =     snd_azf3328_dev_free,
1702         };
1703         u16 tmp;
1704
1705         *rchip = NULL;
1706
1707         if ((err = pci_enable_device(pci)) < 0)
1708                 return err;
1709
1710         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1711         if (chip == NULL) {
1712                 err = -ENOMEM;
1713                 goto out_err;
1714         }
1715         spin_lock_init(&chip->reg_lock);
1716         chip->card = card;
1717         chip->pci = pci;
1718         chip->irq = -1;
1719
1720         /* check if we can restrict PCI DMA transfers to 24 bits */
1721         if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
1722             pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
1723                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
1724                 err = -ENXIO;
1725                 goto out_err;
1726         }
1727
1728         if ((err = pci_request_regions(pci, "Aztech AZF3328")) < 0) {
1729                 goto out_err;
1730         }
1731
1732         chip->codec_port = pci_resource_start(pci, 0);
1733         chip->io2_port   = pci_resource_start(pci, 1);
1734         chip->mpu_port   = pci_resource_start(pci, 2);
1735         chip->synth_port = pci_resource_start(pci, 3);
1736         chip->mixer_port = pci_resource_start(pci, 4);
1737
1738         if (request_irq(pci->irq, snd_azf3328_interrupt,
1739                         IRQF_SHARED, card->shortname, chip)) {
1740                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1741                 err = -EBUSY;
1742                 goto out_err;
1743         }
1744         chip->irq = pci->irq;
1745         pci_set_master(pci);
1746         synchronize_irq(chip->irq);
1747
1748         snd_azf3328_debug_show_ports(chip);
1749
1750         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1751                 goto out_err;
1752         }
1753
1754         /* create mixer interface & switches */
1755         if ((err = snd_azf3328_mixer_new(chip)) < 0)
1756                 goto out_err;
1757
1758 #if 0
1759         /* set very low bitrate to reduce noise and power consumption? */
1760         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT, 5512, 8, 1);
1761 #endif
1762
1763         /* standard chip init stuff */
1764         /* default IRQ init value */
1765         tmp = DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE;
1766
1767         spin_lock_irq(&chip->reg_lock);
1768         snd_azf3328_codec_outb(chip, IDX_IO_PLAY_FLAGS, tmp);
1769         snd_azf3328_codec_outb(chip, IDX_IO_REC_FLAGS, tmp);
1770         snd_azf3328_codec_outb(chip, IDX_IO_SOMETHING_FLAGS, tmp);
1771         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00); /* disable timer */
1772         spin_unlock_irq(&chip->reg_lock);
1773
1774         snd_card_set_dev(card, &pci->dev);
1775
1776         *rchip = chip;
1777
1778         err = 0;
1779         goto out;
1780
1781 out_err:
1782         if (chip)
1783                 snd_azf3328_free(chip);
1784         pci_disable_device(pci);
1785
1786 out:
1787         return err;
1788 }
1789
1790 static int __devinit
1791 snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
1792 {
1793         static int dev;
1794         struct snd_card *card;
1795         struct snd_azf3328 *chip;
1796         struct snd_opl3 *opl3;
1797         int err;
1798
1799         snd_azf3328_dbgcallenter();
1800         if (dev >= SNDRV_CARDS)
1801                 return -ENODEV;
1802         if (!enable[dev]) {
1803                 dev++;
1804                 return -ENOENT;
1805         }
1806
1807         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0 );
1808         if (card == NULL)
1809                 return -ENOMEM;
1810
1811         strcpy(card->driver, "AZF3328");
1812         strcpy(card->shortname, "Aztech AZF3328 (PCI168)");
1813
1814         if ((err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1815                 goto out_err;
1816         }
1817
1818         card->private_data = chip;
1819
1820         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_MPU401,
1821                                         chip->mpu_port, MPU401_INFO_INTEGRATED,
1822                                         pci->irq, 0, &chip->rmidi)) < 0) {
1823                 snd_printk(KERN_ERR "azf3328: no MPU-401 device at 0x%lx?\n", chip->mpu_port);
1824                 goto out_err;
1825         }
1826
1827         if ((err = snd_azf3328_timer(chip, 0)) < 0) {
1828                 goto out_err;
1829         }
1830
1831         if ((err = snd_azf3328_pcm(chip, 0)) < 0) {
1832                 goto out_err;
1833         }
1834
1835         if (snd_opl3_create(card, chip->synth_port, chip->synth_port+2,
1836                             OPL3_HW_AUTO, 1, &opl3) < 0) {
1837                 snd_printk(KERN_ERR "azf3328: no OPL3 device at 0x%lx-0x%lx?\n",
1838                            chip->synth_port, chip->synth_port+2 );
1839         } else {
1840                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1841                         goto out_err;
1842                 }
1843         }
1844
1845         opl3->private_data = chip;
1846
1847         sprintf(card->longname, "%s at 0x%lx, irq %i",
1848                 card->shortname, chip->codec_port, chip->irq);
1849
1850         if ((err = snd_card_register(card)) < 0) {
1851                 goto out_err;
1852         }
1853
1854 #ifdef MODULE
1855         printk(
1856 "azt3328: Sound driver for Aztech AZF3328-based soundcards such as PCI168.\n"
1857 "azt3328: Hardware was completely undocumented, unfortunately.\n"
1858 "azt3328: Feel free to contact andi AT lisas.de for bug reports etc.!\n"
1859 "azt3328: User-scalable sequencer timer set to %dHz (1024000Hz / %d).\n",
1860         1024000 / seqtimer_scaling, seqtimer_scaling);
1861 #endif
1862
1863         if (snd_azf3328_config_joystick(chip, dev) < 0)
1864                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1865                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1866
1867         pci_set_drvdata(pci, card);
1868         dev++;
1869
1870         err = 0;
1871         goto out;
1872
1873 out_err:
1874         snd_card_free(card);
1875
1876 out:
1877         snd_azf3328_dbgcallleave();
1878         return err;
1879 }
1880
1881 static void __devexit
1882 snd_azf3328_remove(struct pci_dev *pci)
1883 {
1884         snd_azf3328_dbgcallenter();
1885         snd_card_free(pci_get_drvdata(pci));
1886         pci_set_drvdata(pci, NULL);
1887         snd_azf3328_dbgcallleave();
1888 }
1889
1890 #ifdef CONFIG_PM
1891 static int
1892 snd_azf3328_suspend(struct pci_dev *pci, pm_message_t state)
1893 {
1894         struct snd_card *card = pci_get_drvdata(pci);
1895         struct snd_azf3328 *chip = card->private_data;
1896         int reg;
1897
1898         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1899
1900         snd_pcm_suspend_all(chip->pcm);
1901
1902         for (reg = 0; reg < AZF_IO_SIZE_MIXER_PM / 2; reg++)
1903                 chip->saved_regs_mixer[reg] = inw(chip->mixer_port + reg * 2);
1904
1905         /* make sure to disable master volume etc. to prevent looping sound */
1906         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1);
1907         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
1908
1909         for (reg = 0; reg < AZF_IO_SIZE_CODEC_PM / 2; reg++)
1910                 chip->saved_regs_codec[reg] = inw(chip->codec_port + reg * 2);
1911         for (reg = 0; reg < AZF_IO_SIZE_IO2_PM / 2; reg++)
1912                 chip->saved_regs_io2[reg] = inw(chip->io2_port + reg * 2);
1913         for (reg = 0; reg < AZF_IO_SIZE_MPU_PM / 2; reg++)
1914                 chip->saved_regs_mpu[reg] = inw(chip->mpu_port + reg * 2);
1915         for (reg = 0; reg < AZF_IO_SIZE_SYNTH_PM / 2; reg++)
1916                 chip->saved_regs_synth[reg] = inw(chip->synth_port + reg * 2);
1917
1918         pci_disable_device(pci);
1919         pci_save_state(pci);
1920         pci_set_power_state(pci, pci_choose_state(pci, state));
1921         return 0;
1922 }
1923
1924 static int
1925 snd_azf3328_resume(struct pci_dev *pci)
1926 {
1927         struct snd_card *card = pci_get_drvdata(pci);
1928         struct snd_azf3328 *chip = card->private_data;
1929         int reg;
1930
1931         pci_set_power_state(pci, PCI_D0);
1932         pci_restore_state(pci);
1933         if (pci_enable_device(pci) < 0) {
1934                 printk(KERN_ERR "azt3328: pci_enable_device failed, "
1935                        "disabling device\n");
1936                 snd_card_disconnect(card);
1937                 return -EIO;
1938         }
1939         pci_set_master(pci);
1940
1941         for (reg = 0; reg < AZF_IO_SIZE_IO2_PM / 2; reg++)
1942                 outw(chip->saved_regs_io2[reg], chip->io2_port + reg * 2);
1943         for (reg = 0; reg < AZF_IO_SIZE_MPU_PM / 2; reg++)
1944                 outw(chip->saved_regs_mpu[reg], chip->mpu_port + reg * 2);
1945         for (reg = 0; reg < AZF_IO_SIZE_SYNTH_PM / 2; reg++)
1946                 outw(chip->saved_regs_synth[reg], chip->synth_port + reg * 2);
1947         for (reg = 0; reg < AZF_IO_SIZE_MIXER_PM / 2; reg++)
1948                 outw(chip->saved_regs_mixer[reg], chip->mixer_port + reg * 2);
1949         for (reg = 0; reg < AZF_IO_SIZE_CODEC_PM / 2; reg++)
1950                 outw(chip->saved_regs_codec[reg], chip->codec_port + reg * 2);
1951
1952         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1953         return 0;
1954 }
1955 #endif
1956
1957
1958
1959
1960 static struct pci_driver driver = {
1961         .name = "AZF3328",
1962         .id_table = snd_azf3328_ids,
1963         .probe = snd_azf3328_probe,
1964         .remove = __devexit_p(snd_azf3328_remove),
1965 #ifdef CONFIG_PM
1966         .suspend = snd_azf3328_suspend,
1967         .resume = snd_azf3328_resume,
1968 #endif
1969 };
1970
1971 static int __init
1972 alsa_card_azf3328_init(void)
1973 {
1974         int err;
1975         snd_azf3328_dbgcallenter();
1976         err = pci_register_driver(&driver);
1977         snd_azf3328_dbgcallleave();
1978         return err;
1979 }
1980
1981 static void __exit
1982 alsa_card_azf3328_exit(void)
1983 {
1984         snd_azf3328_dbgcallenter();
1985         pci_unregister_driver(&driver);
1986         snd_azf3328_dbgcallleave();
1987 }
1988
1989 module_init(alsa_card_azf3328_init)
1990 module_exit(alsa_card_azf3328_exit)