git.oblomov.eu Git - linux-2.6/blob - sound/pci/azt3328.c

   1 /*
   2  *  azt3328.c - driver for Aztech AZF3328 based soundcards (e.g. PCI168).
   3  *  Copyright (C) 2002, 2005, 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 <sound/driver.h>
 119 #include <asm/io.h>
 120 #include <linux/init.h>
 121 #include <linux/pci.h>
 122 #include <linux/delay.h>
 123 #include <linux/slab.h>
 124 #include <linux/gameport.h>
 125 #include <linux/moduleparam.h>
 126 #include <linux/dma-mapping.h>
 127 #include <sound/core.h>
 128 #include <sound/control.h>
 129 #include <sound/pcm.h>
 130 #include <sound/rawmidi.h>
 131 #include <sound/mpu401.h>
 132 #include <sound/opl3.h>
 133 #include <sound/initval.h>
 134 #include "azt3328.h"
 135
 136 MODULE_AUTHOR("Andreas Mohr <andi AT lisas.de>");
 137 MODULE_DESCRIPTION("Aztech AZF3328 (PCI168)");
 138 MODULE_LICENSE("GPL");
 139 MODULE_SUPPORTED_DEVICE("{{Aztech,AZF3328}}");
 140
 141 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
 142 #define SUPPORT_JOYSTICK 1
 143 #endif
 144
 145 #define DEBUG_MISC      0
 146 #define DEBUG_CALLS     0
 147 #define DEBUG_MIXER     0
 148 #define DEBUG_PLAY_REC  0
 149 #define DEBUG_IO        0
 150 #define DEBUG_TIMER     0
 151 #define MIXER_TESTING   0
 152
 153 #if DEBUG_MISC
 154 #define snd_azf3328_dbgmisc(format, args...) printk(KERN_ERR format, ##args)
 155 #else
 156 #define snd_azf3328_dbgmisc(format, args...)
 157 #endif
 158
 159 #if DEBUG_CALLS
 160 #define snd_azf3328_dbgcalls(format, args...) printk(format, ##args)
 161 #define snd_azf3328_dbgcallenter() printk(KERN_ERR "--> %s\n", __FUNCTION__)
 162 #define snd_azf3328_dbgcallleave() printk(KERN_ERR "<-- %s\n", __FUNCTION__)
 163 #else
 164 #define snd_azf3328_dbgcalls(format, args...)
 165 #define snd_azf3328_dbgcallenter()
 166 #define snd_azf3328_dbgcallleave()
 167 #endif
 168
 169 #if DEBUG_MIXER
 170 #define snd_azf3328_dbgmixer(format, args...) printk(format, ##args)
 171 #else
 172 #define snd_azf3328_dbgmixer(format, args...)
 173 #endif
 174
 175 #if DEBUG_PLAY_REC
 176 #define snd_azf3328_dbgplay(format, args...) printk(KERN_ERR format, ##args)
 177 #else
 178 #define snd_azf3328_dbgplay(format, args...)
 179 #endif
 180
 181 #if DEBUG_MISC
 182 #define snd_azf3328_dbgtimer(format, args...) printk(KERN_ERR format, ##args)
 183 #else
 184 #define snd_azf3328_dbgtimer(format, args...)
 185 #endif
 186
 187 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 188 module_param_array(index, int, NULL, 0444);
 189 MODULE_PARM_DESC(index, "Index value for AZF3328 soundcard.");
 190
 191 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 192 module_param_array(id, charp, NULL, 0444);
 193 MODULE_PARM_DESC(id, "ID string for AZF3328 soundcard.");
 194
 195 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
 196 module_param_array(enable, bool, NULL, 0444);
 197 MODULE_PARM_DESC(enable, "Enable AZF3328 soundcard.");
 198
 199 #ifdef SUPPORT_JOYSTICK
 200 static int joystick[SNDRV_CARDS];
 201 module_param_array(joystick, bool, NULL, 0444);
 202 MODULE_PARM_DESC(joystick, "Enable joystick for AZF3328 soundcard.");
 203 #endif
 204
 205 static int seqtimer_scaling = 128;
 206 module_param(seqtimer_scaling, int, 0444);
 207 MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (lockup danger!). Default 128.");
 208
 209 struct snd_azf3328 {
 210         /* often-used fields towards beginning, then grouped */
 211         unsigned long codec_port;
 212         unsigned long io2_port;
 213         unsigned long mpu_port;
 214         unsigned long synth_port;
 215         unsigned long mixer_port;
 216
 217         spinlock_t reg_lock;
 218
 219         struct snd_timer *timer;
 220
 221         struct snd_pcm *pcm;
 222         struct snd_pcm_substream *playback_substream;
 223         struct snd_pcm_substream *capture_substream;
 224         unsigned int is_playing;
 225         unsigned int is_recording;
 226
 227         struct snd_card *card;
 228         struct snd_rawmidi *rmidi;
 229
 230 #ifdef SUPPORT_JOYSTICK
 231         struct gameport *gameport;
 232 #endif
 233
 234         struct pci_dev *pci;
 235         int irq;
 236
 237 #ifdef CONFIG_PM
 238         /* register value containers for power management
 239          * Note: not always full I/O range preserved (just like Win driver!) */
 240         u16 saved_regs_codec [AZF_IO_SIZE_CODEC_PM / 2];
 241         u16 saved_regs_io2   [AZF_IO_SIZE_IO2_PM / 2];
 242         u16 saved_regs_mpu   [AZF_IO_SIZE_MPU_PM / 2];
 243         u16 saved_regs_synth[AZF_IO_SIZE_SYNTH_PM / 2];
 244         u16 saved_regs_mixer[AZF_IO_SIZE_MIXER_PM / 2];
 245 #endif
 246 };
 247
 248 static const struct pci_device_id snd_azf3328_ids[] = {
 249         { 0x122D, 0x50DC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* PCI168/3328 */
 250         { 0x122D, 0x80DA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* 3328 */
 251         { 0, }
 252 };
 253
 254 MODULE_DEVICE_TABLE(pci, snd_azf3328_ids);
 255
 256 static inline void
 257 snd_azf3328_codec_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 258 {
 259         outb(value, chip->codec_port + reg);
 260 }
 261
 262 static inline u8
 263 snd_azf3328_codec_inb(const struct snd_azf3328 *chip, int reg)
 264 {
 265         return inb(chip->codec_port + reg);
 266 }
 267
 268 static inline void
 269 snd_azf3328_codec_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 270 {
 271         outw(value, chip->codec_port + reg);
 272 }
 273
 274 static inline u16
 275 snd_azf3328_codec_inw(const struct snd_azf3328 *chip, int reg)
 276 {
 277         return inw(chip->codec_port + reg);
 278 }
 279
 280 static inline void
 281 snd_azf3328_codec_outl(const struct snd_azf3328 *chip, int reg, u32 value)
 282 {
 283         outl(value, chip->codec_port + reg);
 284 }
 285
 286 static inline void
 287 snd_azf3328_io2_outb(const struct snd_azf3328 *chip, int reg, u8 value)
 288 {
 289         outb(value, chip->io2_port + reg);
 290 }
 291
 292 static inline u8
 293 snd_azf3328_io2_inb(const struct snd_azf3328 *chip, int reg)
 294 {
 295         return inb(chip->io2_port + reg);
 296 }
 297
 298 static inline void
 299 snd_azf3328_mixer_outw(const struct snd_azf3328 *chip, int reg, u16 value)
 300 {
 301         outw(value, chip->mixer_port + reg);
 302 }
 303
 304 static inline u16
 305 snd_azf3328_mixer_inw(const struct snd_azf3328 *chip, int reg)
 306 {
 307         return inw(chip->mixer_port + reg);
 308 }
 309
 310 static void
 311 snd_azf3328_mixer_set_mute(const struct snd_azf3328 *chip, int reg, int do_mute)
 312 {
 313         unsigned long portbase = chip->mixer_port + reg + 1;
 314         unsigned char oldval;
 315
 316         /* the mute bit is on the *second* (i.e. right) register of a
 317          * left/right channel setting */
 318         oldval = inb(portbase);
 319         if (do_mute)
 320                 oldval |= 0x80;
 321         else
 322                 oldval &= ~0x80;
 323         outb(oldval, portbase);
 324 }
 325
 326 static void
 327 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)
 328 {
 329         unsigned long portbase = chip->mixer_port + reg;
 330         unsigned char curr_vol_left = 0, curr_vol_right = 0;
 331         int left_done = 0, right_done = 0;
 332
 333         snd_azf3328_dbgcallenter();
 334         if (chan_sel & SET_CHAN_LEFT)
 335                 curr_vol_left  = inb(portbase + 1);
 336         else
 337                 left_done = 1;
 338         if (chan_sel & SET_CHAN_RIGHT)
 339                 curr_vol_right = inb(portbase + 0);
 340         else
 341                 right_done = 1;
 342
 343         /* take care of muting flag (0x80) contained in left channel */
 344         if (curr_vol_left & 0x80)
 345                 dst_vol_left |= 0x80;
 346         else
 347                 dst_vol_left &= ~0x80;
 348
 349         do {
 350                 if (!left_done) {
 351                         if (curr_vol_left > dst_vol_left)
 352                                 curr_vol_left--;
 353                         else
 354                         if (curr_vol_left < dst_vol_left)
 355                                 curr_vol_left++;
 356                         else
 357                             left_done = 1;
 358                         outb(curr_vol_left, portbase + 1);
 359                 }
 360                 if (!right_done) {
 361                         if (curr_vol_right > dst_vol_right)
 362                                 curr_vol_right--;
 363                         else
 364                         if (curr_vol_right < dst_vol_right)
 365                                 curr_vol_right++;
 366                         else
 367                             right_done = 1;
 368                         /* during volume change, the right channel is crackling
 369                          * somewhat more than the left channel, unfortunately.
 370                          * This seems to be a hardware issue. */
 371                         outb(curr_vol_right, portbase + 0);
 372                 }
 373                 if (delay)
 374                         mdelay(delay);
 375         } while ((!left_done) || (!right_done));
 376         snd_azf3328_dbgcallleave();
 377 }
 378
 379 /*
 380  * general mixer element
 381  */
 382 struct azf3328_mixer_reg {
 383         unsigned int reg;
 384         unsigned int lchan_shift, rchan_shift;
 385         unsigned int mask;
 386         unsigned int invert: 1;
 387         unsigned int stereo: 1;
 388         unsigned int enum_c: 4;
 389 };
 390
 391 #define COMPOSE_MIXER_REG(reg,lchan_shift,rchan_shift,mask,invert,stereo,enum_c) \
 392  ((reg) | (lchan_shift << 8) | (rchan_shift << 12) | \
 393   (mask << 16) | \
 394   (invert << 24) | \
 395   (stereo << 25) | \
 396   (enum_c << 26))
 397
 398 static void snd_azf3328_mixer_reg_decode(struct azf3328_mixer_reg *r, unsigned long val)
 399 {
 400         r->reg = val & 0xff;
 401         r->lchan_shift = (val >> 8) & 0x0f;
 402         r->rchan_shift = (val >> 12) & 0x0f;
 403         r->mask = (val >> 16) & 0xff;
 404         r->invert = (val >> 24) & 1;
 405         r->stereo = (val >> 25) & 1;
 406         r->enum_c = (val >> 26) & 0x0f;
 407 }
 408
 409 /*
 410  * mixer switches/volumes
 411  */
 412
 413 #define AZF3328_MIXER_SWITCH(xname, reg, shift, invert) \
 414 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 415   .info = snd_azf3328_info_mixer, \
 416   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 417   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0x1, invert, 0, 0), \
 418 }
 419
 420 #define AZF3328_MIXER_VOL_STEREO(xname, reg, mask, invert) \
 421 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 422   .info = snd_azf3328_info_mixer, \
 423   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 424   .private_value = COMPOSE_MIXER_REG(reg, 8, 0, mask, invert, 1, 0), \
 425 }
 426
 427 #define AZF3328_MIXER_VOL_MONO(xname, reg, mask, is_right_chan) \
 428 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 429   .info = snd_azf3328_info_mixer, \
 430   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 431   .private_value = COMPOSE_MIXER_REG(reg, is_right_chan ? 0 : 8, 0, mask, 1, 0, 0), \
 432 }
 433
 434 #define AZF3328_MIXER_VOL_SPECIAL(xname, reg, mask, shift, invert) \
 435 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 436   .info = snd_azf3328_info_mixer, \
 437   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
 438   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, mask, invert, 0, 0), \
 439 }
 440
 441 #define AZF3328_MIXER_ENUM(xname, reg, enum_c, shift) \
 442 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 443   .info = snd_azf3328_info_mixer_enum, \
 444   .get = snd_azf3328_get_mixer_enum, .put = snd_azf3328_put_mixer_enum, \
 445   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0, 0, 0, enum_c), \
 446 }
 447
 448 static int
 449 snd_azf3328_info_mixer(struct snd_kcontrol *kcontrol,
 450                        struct snd_ctl_elem_info *uinfo)
 451 {
 452         struct azf3328_mixer_reg reg;
 453
 454         snd_azf3328_dbgcallenter();
 455         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 456         uinfo->type = reg.mask == 1 ?
 457                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 458         uinfo->count = reg.stereo + 1;
 459         uinfo->value.integer.min = 0;
 460         uinfo->value.integer.max = reg.mask;
 461         snd_azf3328_dbgcallleave();
 462         return 0;
 463 }
 464
 465 static int
 466 snd_azf3328_get_mixer(struct snd_kcontrol *kcontrol,
 467                       struct snd_ctl_elem_value *ucontrol)
 468 {
 469         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 470         struct azf3328_mixer_reg reg;
 471         unsigned int oreg, val;
 472
 473         snd_azf3328_dbgcallenter();
 474         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 475
 476         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 477         val = (oreg >> reg.lchan_shift) & reg.mask;
 478         if (reg.invert)
 479                 val = reg.mask - val;
 480         ucontrol->value.integer.value[0] = val;
 481         if (reg.stereo) {
 482                 val = (oreg >> reg.rchan_shift) & reg.mask;
 483                 if (reg.invert)
 484                         val = reg.mask - val;
 485                 ucontrol->value.integer.value[1] = val;
 486         }
 487         snd_azf3328_dbgmixer("get: %02x is %04x -> vol %02lx|%02lx "
 488                              "(shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
 489                 reg.reg, oreg,
 490                 ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 491                 reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
 492         snd_azf3328_dbgcallleave();
 493         return 0;
 494 }
 495
 496 static int
 497 snd_azf3328_put_mixer(struct snd_kcontrol *kcontrol,
 498                       struct snd_ctl_elem_value *ucontrol)
 499 {
 500         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 501         struct azf3328_mixer_reg reg;
 502         unsigned int oreg, nreg, val;
 503
 504         snd_azf3328_dbgcallenter();
 505         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 506         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 507         val = ucontrol->value.integer.value[0] & reg.mask;
 508         if (reg.invert)
 509                 val = reg.mask - val;
 510         nreg = oreg & ~(reg.mask << reg.lchan_shift);
 511         nreg |= (val << reg.lchan_shift);
 512         if (reg.stereo) {
 513                 val = ucontrol->value.integer.value[1] & reg.mask;
 514                 if (reg.invert)
 515                         val = reg.mask - val;
 516                 nreg &= ~(reg.mask << reg.rchan_shift);
 517                 nreg |= (val << reg.rchan_shift);
 518         }
 519         if (reg.mask >= 0x07) /* it's a volume control, so better take care */
 520                 snd_azf3328_mixer_write_volume_gradually(
 521                         chip, reg.reg, nreg >> 8, nreg & 0xff,
 522                         /* just set both channels, doesn't matter */
 523                         SET_CHAN_LEFT|SET_CHAN_RIGHT,
 524                         0);
 525         else
 526                 snd_azf3328_mixer_outw(chip, reg.reg, nreg);
 527
 528         snd_azf3328_dbgmixer("put: %02x to %02lx|%02lx, "
 529                              "oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
 530                 reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
 531                 oreg, reg.lchan_shift, reg.rchan_shift,
 532                 nreg, snd_azf3328_mixer_inw(chip, reg.reg));
 533         snd_azf3328_dbgcallleave();
 534         return (nreg != oreg);
 535 }
 536
 537 static int
 538 snd_azf3328_info_mixer_enum(struct snd_kcontrol *kcontrol,
 539                             struct snd_ctl_elem_info *uinfo)
 540 {
 541         static const char * const texts1[] = {
 542                 "Mic1", "Mic2"
 543         };
 544         static const char * const texts2[] = {
 545                 "Mix", "Mic"
 546         };
 547         static const char * const texts3[] = {
 548                 "Mic", "CD", "Video", "Aux",
 549                 "Line", "Mix", "Mix Mono", "Phone"
 550         };
 551         static const char * const texts4[] = {
 552                 "pre 3D", "post 3D"
 553         };
 554         struct azf3328_mixer_reg reg;
 555
 556         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 557         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 558         uinfo->count = (reg.reg == IDX_MIXER_REC_SELECT) ? 2 : 1;
 559         uinfo->value.enumerated.items = reg.enum_c;
 560         if (uinfo->value.enumerated.item > reg.enum_c - 1U)
 561                 uinfo->value.enumerated.item = reg.enum_c - 1U;
 562         if (reg.reg == IDX_MIXER_ADVCTL2) {
 563                 switch(reg.lchan_shift) {
 564                 case 8: /* modem out sel */
 565                         strcpy(uinfo->value.enumerated.name, texts1[uinfo->value.enumerated.item]);
 566                         break;
 567                 case 9: /* mono sel source */
 568                         strcpy(uinfo->value.enumerated.name, texts2[uinfo->value.enumerated.item]);
 569                         break;
 570                 case 15: /* PCM Out Path */
 571                         strcpy(uinfo->value.enumerated.name, texts4[uinfo->value.enumerated.item]);
 572                         break;
 573                 }
 574         } else
 575                 strcpy(uinfo->value.enumerated.name, texts3[uinfo->value.enumerated.item]
 576 );
 577         return 0;
 578 }
 579
 580 static int
 581 snd_azf3328_get_mixer_enum(struct snd_kcontrol *kcontrol,
 582                            struct snd_ctl_elem_value *ucontrol)
 583 {
 584         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 585         struct azf3328_mixer_reg reg;
 586         unsigned short val;
 587
 588         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 589         val = snd_azf3328_mixer_inw(chip, reg.reg);
 590         if (reg.reg == IDX_MIXER_REC_SELECT) {
 591                 ucontrol->value.enumerated.item[0] = (val >> 8) & (reg.enum_c - 1);
 592                 ucontrol->value.enumerated.item[1] = (val >> 0) & (reg.enum_c - 1);
 593         } else
 594                 ucontrol->value.enumerated.item[0] = (val >> reg.lchan_shift) & (reg.enum_c - 1);
 595
 596         snd_azf3328_dbgmixer("get_enum: %02x is %04x -> %d|%d (shift %02d, enum_c %d)\n",
 597                 reg.reg, val, ucontrol->value.enumerated.item[0], ucontrol->value.enumerated.item[1],
 598                 reg.lchan_shift, reg.enum_c);
 599         return 0;
 600 }
 601
 602 static int
 603 snd_azf3328_put_mixer_enum(struct snd_kcontrol *kcontrol,
 604                            struct snd_ctl_elem_value *ucontrol)
 605 {
 606         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
 607         struct azf3328_mixer_reg reg;
 608         unsigned int oreg, nreg, val;
 609
 610         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
 611         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
 612         val = oreg;
 613         if (reg.reg == IDX_MIXER_REC_SELECT) {
 614                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U ||
 615                 ucontrol->value.enumerated.item[1] > reg.enum_c - 1U)
 616                         return -EINVAL;
 617                 val = (ucontrol->value.enumerated.item[0] << 8) |
 618                       (ucontrol->value.enumerated.item[1] << 0);
 619         } else {
 620                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U)
 621                         return -EINVAL;
 622                 val &= ~((reg.enum_c - 1) << reg.lchan_shift);
 623                 val |= (ucontrol->value.enumerated.item[0] << reg.lchan_shift);
 624         }
 625         snd_azf3328_mixer_outw(chip, reg.reg, val);
 626         nreg = val;
 627
 628         snd_azf3328_dbgmixer("put_enum: %02x to %04x, oreg %04x\n", reg.reg, val, oreg);
 629         return (nreg != oreg);
 630 }
 631
 632 static struct snd_kcontrol_new snd_azf3328_mixer_controls[] __devinitdata = {
 633         AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
 634         AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
 635         AZF3328_MIXER_SWITCH("Wave Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),
 636         AZF3328_MIXER_VOL_STEREO("Wave Playback Volume", IDX_MIXER_WAVEOUT, 0x1f, 1),
 637         AZF3328_MIXER_SWITCH("Wave 3D Bypass Playback Switch", IDX_MIXER_ADVCTL2, 7, 1),
 638         AZF3328_MIXER_SWITCH("FM Playback Switch", IDX_MIXER_FMSYNTH, 15, 1),
 639         AZF3328_MIXER_VOL_STEREO("FM Playback Volume", IDX_MIXER_FMSYNTH, 0x1f, 1),
 640         AZF3328_MIXER_SWITCH("CD Playback Switch", IDX_MIXER_CDAUDIO, 15, 1),
 641         AZF3328_MIXER_VOL_STEREO("CD Playback Volume", IDX_MIXER_CDAUDIO, 0x1f, 1),
 642         AZF3328_MIXER_SWITCH("Capture Switch", IDX_MIXER_REC_VOLUME, 15, 1),
 643         AZF3328_MIXER_VOL_STEREO("Capture Volume", IDX_MIXER_REC_VOLUME, 0x0f, 0),
 644         AZF3328_MIXER_ENUM("Capture Source", IDX_MIXER_REC_SELECT, 8, 0),
 645         AZF3328_MIXER_SWITCH("Mic Playback Switch", IDX_MIXER_MIC, 15, 1),
 646         AZF3328_MIXER_VOL_MONO("Mic Playback Volume", IDX_MIXER_MIC, 0x1f, 1),
 647         AZF3328_MIXER_SWITCH("Mic Boost (+20dB)", IDX_MIXER_MIC, 6, 0),
 648         AZF3328_MIXER_SWITCH("Line Playback Switch", IDX_MIXER_LINEIN, 15, 1),
 649         AZF3328_MIXER_VOL_STEREO("Line Playback Volume", IDX_MIXER_LINEIN, 0x1f, 1),
 650         AZF3328_MIXER_SWITCH("PC Speaker Playback Switch", IDX_MIXER_PCBEEP, 15, 1),
 651         AZF3328_MIXER_VOL_SPECIAL("PC Speaker Playback Volume", IDX_MIXER_PCBEEP, 0x0f, 1, 1),
 652         AZF3328_MIXER_SWITCH("Video Playback Switch", IDX_MIXER_VIDEO, 15, 1),
 653         AZF3328_MIXER_VOL_STEREO("Video Playback Volume", IDX_MIXER_VIDEO, 0x1f, 1),
 654         AZF3328_MIXER_SWITCH("Aux Playback Switch", IDX_MIXER_AUX, 15, 1),
 655         AZF3328_MIXER_VOL_STEREO("Aux Playback Volume", IDX_MIXER_AUX, 0x1f, 1),
 656         AZF3328_MIXER_SWITCH("Modem Playback Switch", IDX_MIXER_MODEMOUT, 15, 1),
 657         AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
 658         AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
 659         AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
 660         AZF3328_MIXER_ENUM("Mic Select", IDX_MIXER_ADVCTL2, 2, 8),
 661         AZF3328_MIXER_ENUM("Mono Output Select", IDX_MIXER_ADVCTL2, 2, 9),
 662         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! */
 663         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
 664         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
 665         AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
 666         AZF3328_MIXER_VOL_SPECIAL("3D Control - Width", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
 667         AZF3328_MIXER_VOL_SPECIAL("3D Control - Depth", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
 668 #if MIXER_TESTING
 669         AZF3328_MIXER_SWITCH("0", IDX_MIXER_ADVCTL2, 0, 0),
 670         AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
 671         AZF3328_MIXER_SWITCH("2", IDX_MIXER_ADVCTL2, 2, 0),
 672         AZF3328_MIXER_SWITCH("3", IDX_MIXER_ADVCTL2, 3, 0),
 673         AZF3328_MIXER_SWITCH("4", IDX_MIXER_ADVCTL2, 4, 0),
 674         AZF3328_MIXER_SWITCH("5", IDX_MIXER_ADVCTL2, 5, 0),
 675         AZF3328_MIXER_SWITCH("6", IDX_MIXER_ADVCTL2, 6, 0),
 676         AZF3328_MIXER_SWITCH("7", IDX_MIXER_ADVCTL2, 7, 0),
 677         AZF3328_MIXER_SWITCH("8", IDX_MIXER_ADVCTL2, 8, 0),
 678         AZF3328_MIXER_SWITCH("9", IDX_MIXER_ADVCTL2, 9, 0),
 679         AZF3328_MIXER_SWITCH("10", IDX_MIXER_ADVCTL2, 10, 0),
 680         AZF3328_MIXER_SWITCH("11", IDX_MIXER_ADVCTL2, 11, 0),
 681         AZF3328_MIXER_SWITCH("12", IDX_MIXER_ADVCTL2, 12, 0),
 682         AZF3328_MIXER_SWITCH("13", IDX_MIXER_ADVCTL2, 13, 0),
 683         AZF3328_MIXER_SWITCH("14", IDX_MIXER_ADVCTL2, 14, 0),
 684         AZF3328_MIXER_SWITCH("15", IDX_MIXER_ADVCTL2, 15, 0),
 685 #endif
 686 };
 687
 688 static u16 __devinitdata snd_azf3328_init_values[][2] = {
 689         { IDX_MIXER_PLAY_MASTER,        MIXER_MUTE_MASK|0x1f1f },
 690         { IDX_MIXER_MODEMOUT,           MIXER_MUTE_MASK|0x1f1f },
 691         { IDX_MIXER_BASSTREBLE,         0x0000 },
 692         { IDX_MIXER_PCBEEP,             MIXER_MUTE_MASK|0x1f1f },
 693         { IDX_MIXER_MODEMIN,            MIXER_MUTE_MASK|0x1f1f },
 694         { IDX_MIXER_MIC,                MIXER_MUTE_MASK|0x001f },
 695         { IDX_MIXER_LINEIN,             MIXER_MUTE_MASK|0x1f1f },
 696         { IDX_MIXER_CDAUDIO,            MIXER_MUTE_MASK|0x1f1f },
 697         { IDX_MIXER_VIDEO,              MIXER_MUTE_MASK|0x1f1f },
 698         { IDX_MIXER_AUX,                MIXER_MUTE_MASK|0x1f1f },
 699         { IDX_MIXER_WAVEOUT,            MIXER_MUTE_MASK|0x1f1f },
 700         { IDX_MIXER_FMSYNTH,            MIXER_MUTE_MASK|0x1f1f },
 701         { IDX_MIXER_REC_VOLUME,         MIXER_MUTE_MASK|0x0707 },
 702 };
 703
 704 static int __devinit
 705 snd_azf3328_mixer_new(struct snd_azf3328 *chip)
 706 {
 707         struct snd_card *card;
 708         const struct snd_kcontrol_new *sw;
 709         unsigned int idx;
 710         int err;
 711
 712         snd_azf3328_dbgcallenter();
 713         snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
 714
 715         card = chip->card;
 716
 717         /* mixer reset */
 718         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
 719
 720         /* mute and zero volume channels */
 721         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_init_values); idx++) {
 722                 snd_azf3328_mixer_outw(chip,
 723                         snd_azf3328_init_values[idx][0],
 724                         snd_azf3328_init_values[idx][1]);
 725         }
 726
 727         /* add mixer controls */
 728         sw = snd_azf3328_mixer_controls;
 729         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_mixer_controls); idx++, sw++) {
 730                 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(sw, chip))) < 0)
 731                         return err;
 732         }
 733         snd_component_add(card, "AZF3328 mixer");
 734         strcpy(card->mixername, "AZF3328 mixer");
 735
 736         snd_azf3328_dbgcallleave();
 737         return 0;
 738 }
 739
 740 static int
 741 snd_azf3328_hw_params(struct snd_pcm_substream *substream,
 742                                  struct snd_pcm_hw_params *hw_params)
 743 {
 744         int res;
 745         snd_azf3328_dbgcallenter();
 746         res = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 747         snd_azf3328_dbgcallleave();
 748         return res;
 749 }
 750
 751 static int
 752 snd_azf3328_hw_free(struct snd_pcm_substream *substream)
 753 {
 754         snd_azf3328_dbgcallenter();
 755         snd_pcm_lib_free_pages(substream);
 756         snd_azf3328_dbgcallleave();
 757         return 0;
 758 }
 759
 760 static void
 761 snd_azf3328_setfmt(struct snd_azf3328 *chip,
 762                                unsigned int reg,
 763                                unsigned int bitrate,
 764                                unsigned int format_width,
 765                                unsigned int channels
 766 )
 767 {
 768         u16 val = 0xff00;
 769         unsigned long flags;
 770
 771         snd_azf3328_dbgcallenter();
 772         switch (bitrate) {
 773         case  4000: val |= SOUNDFORMAT_FREQ_SUSPECTED_4000; break;
 774         case  4800: val |= SOUNDFORMAT_FREQ_SUSPECTED_4800; break;
 775         case  5512: val |= SOUNDFORMAT_FREQ_5510; break; /* the AZF3328 names it "5510" for some strange reason */
 776         case  6620: val |= SOUNDFORMAT_FREQ_6620; break;
 777         case  8000: val |= SOUNDFORMAT_FREQ_8000; break;
 778         case  9600: val |= SOUNDFORMAT_FREQ_9600; break;
 779         case 11025: val |= SOUNDFORMAT_FREQ_11025; break;
 780         case 13240: val |= SOUNDFORMAT_FREQ_SUSPECTED_13240; break;
 781         case 16000: val |= SOUNDFORMAT_FREQ_16000; break;
 782         case 22050: val |= SOUNDFORMAT_FREQ_22050; break;
 783         case 32000: val |= SOUNDFORMAT_FREQ_32000; break;
 784         case 44100: val |= SOUNDFORMAT_FREQ_44100; break;
 785         case 48000: val |= SOUNDFORMAT_FREQ_48000; break;
 786         case 66200: val |= SOUNDFORMAT_FREQ_SUSPECTED_66200; break;
 787         default:
 788                 snd_printk(KERN_WARNING "unknown bitrate %d, assuming 44.1kHz!\n", bitrate);
 789                 val |= SOUNDFORMAT_FREQ_44100;
 790                 break;
 791         }
 792         /* val = 0xff07; 3m27.993s (65301Hz; -> 64000Hz???) hmm, 66120, 65967, 66123 */
 793         /* val = 0xff09; 17m15.098s (13123,478Hz; -> 12000Hz???) hmm, 13237.2Hz? */
 794         /* val = 0xff0a; 47m30.599s (4764,891Hz; -> 4800Hz???) yup, 4803Hz */
 795         /* val = 0xff0c; 57m0.510s (4010,263Hz; -> 4000Hz???) yup, 4003Hz */
 796         /* val = 0xff05; 5m11.556s (... -> 44100Hz) */
 797         /* val = 0xff03; 10m21.529s (21872,463Hz; -> 22050Hz???) */
 798         /* val = 0xff0f; 20m41.883s (10937,993Hz; -> 11025Hz???) */
 799         /* val = 0xff0d; 41m23.135s (5523,600Hz; -> 5512Hz???) */
 800         /* val = 0xff0e; 28m30.777s (8017Hz; -> 8000Hz???) */
 801
 802         if (channels == 2)
 803                 val |= SOUNDFORMAT_FLAG_2CHANNELS;
 804
 805         if (format_width == 16)
 806                 val |= SOUNDFORMAT_FLAG_16BIT;
 807
 808         spin_lock_irqsave(&chip->reg_lock, flags);
 809
 810         /* set bitrate/format */
 811         snd_azf3328_codec_outw(chip, reg, val);
 812
 813         /* changing the bitrate/format settings switches off the
 814          * audio output with an annoying click in case of 8/16bit format change
 815          * (maybe shutting down DAC/ADC?), thus immediately
 816          * do some tweaking to reenable it and get rid of the clicking
 817          * (FIXME: yes, it works, but what exactly am I doing here?? :)
 818          * FIXME: does this have some side effects for full-duplex
 819          * or other dramatic side effects? */
 820         if (reg == IDX_IO_PLAY_SOUNDFORMAT) /* only do it for playback */
 821                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 822                         snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) |
 823                         DMA_PLAY_SOMETHING1 |
 824                         DMA_PLAY_SOMETHING2 |
 825                         SOMETHING_ALMOST_ALWAYS_SET |
 826                         DMA_EPILOGUE_SOMETHING |
 827                         DMA_SOMETHING_ELSE
 828                 );
 829
 830         spin_unlock_irqrestore(&chip->reg_lock, flags);
 831         snd_azf3328_dbgcallleave();
 832 }
 833
 834 static void
 835 snd_azf3328_setdmaa(struct snd_azf3328 *chip,
 836                                 long unsigned int addr,
 837                                 unsigned int count,
 838                                 unsigned int size,
 839                                 int do_recording)
 840 {
 841         unsigned long flags, portbase;
 842         unsigned int is_running;
 843
 844         snd_azf3328_dbgcallenter();
 845         if (do_recording) {
 846                 /* access capture registers, i.e. skip playback reg section */
 847                 portbase = chip->codec_port + 0x20;
 848                 is_running = chip->is_recording;
 849         } else {
 850                 /* access the playback register section */
 851                 portbase = chip->codec_port + 0x00;
 852                 is_running = chip->is_playing;
 853         }
 854
 855         /* AZF3328 uses a two buffer pointer DMA playback approach */
 856         if (!is_running) {
 857                 unsigned long addr_area2;
 858                 unsigned long count_areas, count_tmp; /* width 32bit -- overflow!! */
 859                 count_areas = size/2;
 860                 addr_area2 = addr+count_areas;
 861                 count_areas--; /* max. index */
 862                 snd_azf3328_dbgplay("set DMA: buf1 %08lx[%lu], buf2 %08lx[%lu]\n", addr, count_areas, addr_area2, count_areas);
 863
 864                 /* build combined I/O buffer length word */
 865                 count_tmp = count_areas;
 866                 count_areas |= (count_tmp << 16);
 867                 spin_lock_irqsave(&chip->reg_lock, flags);
 868                 outl(addr, portbase + IDX_IO_PLAY_DMA_START_1);
 869                 outl(addr_area2, portbase + IDX_IO_PLAY_DMA_START_2);
 870                 outl(count_areas, portbase + IDX_IO_PLAY_DMA_LEN_1);
 871                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 872         }
 873         snd_azf3328_dbgcallleave();
 874 }
 875
 876 static int
 877 snd_azf3328_playback_prepare(struct snd_pcm_substream *substream)
 878 {
 879 #if 0
 880         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 881         struct snd_pcm_runtime *runtime = substream->runtime;
 882         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 883         unsigned int count = snd_pcm_lib_period_bytes(substream);
 884 #endif
 885
 886         snd_azf3328_dbgcallenter();
 887 #if 0
 888         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 889                 runtime->rate,
 890                 snd_pcm_format_width(runtime->format),
 891                 runtime->channels);
 892         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 0);
 893 #endif
 894         snd_azf3328_dbgcallleave();
 895         return 0;
 896 }
 897
 898 static int
 899 snd_azf3328_capture_prepare(struct snd_pcm_substream *substream)
 900 {
 901 #if 0
 902         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 903         struct snd_pcm_runtime *runtime = substream->runtime;
 904         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 905         unsigned int count = snd_pcm_lib_period_bytes(substream);
 906 #endif
 907
 908         snd_azf3328_dbgcallenter();
 909 #if 0
 910         snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
 911                 runtime->rate,
 912                 snd_pcm_format_width(runtime->format),
 913                 runtime->channels);
 914         snd_azf3328_setdmaa(chip, runtime->dma_addr, count, size, 1);
 915 #endif
 916         snd_azf3328_dbgcallleave();
 917         return 0;
 918 }
 919
 920 static int
 921 snd_azf3328_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 922 {
 923         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
 924         struct snd_pcm_runtime *runtime = substream->runtime;
 925         int result = 0;
 926         unsigned int status1;
 927
 928         snd_azf3328_dbgcalls("snd_azf3328_playback_trigger cmd %d\n", cmd);
 929
 930         switch (cmd) {
 931         case SNDRV_PCM_TRIGGER_START:
 932                 snd_azf3328_dbgplay("START PLAYBACK\n");
 933
 934                 /* mute WaveOut */
 935                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
 936
 937                 snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT,
 938                         runtime->rate,
 939                         snd_pcm_format_width(runtime->format),
 940                         runtime->channels);
 941
 942                 spin_lock(&chip->reg_lock);
 943                 /* stop playback */
 944                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
 945                 status1 &= ~DMA_RESUME;
 946                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 947
 948                 /* FIXME: clear interrupts or what??? */
 949                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_IRQTYPE, 0xffff);
 950                 spin_unlock(&chip->reg_lock);
 951
 952                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
 953                         snd_pcm_lib_period_bytes(substream),
 954                         snd_pcm_lib_buffer_bytes(substream),
 955                         0);
 956
 957                 spin_lock(&chip->reg_lock);
 958 #ifdef WIN9X
 959                 /* FIXME: enable playback/recording??? */
 960                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
 961                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 962
 963                 /* start playback again */
 964                 /* FIXME: what is this value (0x0010)??? */
 965                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
 966                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
 967 #else /* NT4 */
 968                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 969                         0x0000);
 970                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 971                         DMA_PLAY_SOMETHING1);
 972                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 973                         DMA_PLAY_SOMETHING1 |
 974                         DMA_PLAY_SOMETHING2);
 975                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 976                         DMA_RESUME |
 977                         SOMETHING_ALMOST_ALWAYS_SET |
 978                         DMA_EPILOGUE_SOMETHING |
 979                         DMA_SOMETHING_ELSE);
 980 #endif
 981                 spin_unlock(&chip->reg_lock);
 982
 983                 /* now unmute WaveOut */
 984                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
 985
 986                 chip->is_playing = 1;
 987                 snd_azf3328_dbgplay("STARTED PLAYBACK\n");
 988                 break;
 989         case SNDRV_PCM_TRIGGER_RESUME:
 990                 snd_azf3328_dbgplay("RESUME PLAYBACK\n");
 991                 /* resume playback if we were active */
 992                 if (chip->is_playing)
 993                         snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
 994                                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) | DMA_RESUME);
 995                 break;
 996         case SNDRV_PCM_TRIGGER_STOP:
 997                 snd_azf3328_dbgplay("STOP PLAYBACK\n");
 998
 999                 /* mute WaveOut */
1000                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
1001
1002                 spin_lock(&chip->reg_lock);
1003                 /* stop playback */
1004                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS);
1005
1006                 status1 &= ~DMA_RESUME;
1007                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
1008
1009                 /* hmm, is this really required? we're resetting the same bit
1010                  * immediately thereafter... */
1011                 status1 |= DMA_PLAY_SOMETHING1;
1012                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
1013
1014                 status1 &= ~DMA_PLAY_SOMETHING1;
1015                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS, status1);
1016                 spin_unlock(&chip->reg_lock);
1017
1018                 /* now unmute WaveOut */
1019                 snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 0);
1020                 chip->is_playing = 0;
1021                 snd_azf3328_dbgplay("STOPPED PLAYBACK\n");
1022                 break;
1023         case SNDRV_PCM_TRIGGER_SUSPEND:
1024                 snd_azf3328_dbgplay("SUSPEND PLAYBACK\n");
1025                 /* make sure playback is stopped */
1026                 snd_azf3328_codec_outw(chip, IDX_IO_PLAY_FLAGS,
1027                         snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS) & ~DMA_RESUME);
1028                 break;
1029         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1030                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1031                 break;
1032         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1033                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1034                 break;
1035         default:
1036                 printk(KERN_ERR "FIXME: unknown trigger mode!\n");
1037                 return -EINVAL;
1038         }
1039
1040         snd_azf3328_dbgcallleave();
1041         return result;
1042 }
1043
1044 /* this is just analogous to playback; I'm not quite sure whether recording
1045  * should actually be triggered like that */
1046 static int
1047 snd_azf3328_capture_trigger(struct snd_pcm_substream *substream, int cmd)
1048 {
1049         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1050         struct snd_pcm_runtime *runtime = substream->runtime;
1051         int result = 0;
1052         unsigned int status1;
1053
1054         snd_azf3328_dbgcalls("snd_azf3328_capture_trigger cmd %d\n", cmd);
1055
1056         switch (cmd) {
1057         case SNDRV_PCM_TRIGGER_START:
1058
1059                 snd_azf3328_dbgplay("START CAPTURE\n");
1060
1061                 snd_azf3328_setfmt(chip, IDX_IO_REC_SOUNDFORMAT,
1062                         runtime->rate,
1063                         snd_pcm_format_width(runtime->format),
1064                         runtime->channels);
1065
1066                 spin_lock(&chip->reg_lock);
1067                 /* stop recording */
1068                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1069                 status1 &= ~DMA_RESUME;
1070                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1071
1072                 /* FIXME: clear interrupts or what??? */
1073                 snd_azf3328_codec_outw(chip, IDX_IO_REC_IRQTYPE, 0xffff);
1074                 spin_unlock(&chip->reg_lock);
1075
1076                 snd_azf3328_setdmaa(chip, runtime->dma_addr,
1077                         snd_pcm_lib_period_bytes(substream),
1078                         snd_pcm_lib_buffer_bytes(substream),
1079                         1);
1080
1081                 spin_lock(&chip->reg_lock);
1082 #ifdef WIN9X
1083                 /* FIXME: enable playback/recording??? */
1084                 status1 |= DMA_PLAY_SOMETHING1 | DMA_PLAY_SOMETHING2;
1085                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1086
1087                 /* start capture again */
1088                 /* FIXME: what is this value (0x0010)??? */
1089                 status1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
1090                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1091 #else
1092                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1093                         0x0000);
1094                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1095                         DMA_PLAY_SOMETHING1);
1096                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1097                         DMA_PLAY_SOMETHING1 |
1098                         DMA_PLAY_SOMETHING2);
1099                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1100                         DMA_RESUME |
1101                         SOMETHING_ALMOST_ALWAYS_SET |
1102                         DMA_EPILOGUE_SOMETHING |
1103                         DMA_SOMETHING_ELSE);
1104 #endif
1105                 spin_unlock(&chip->reg_lock);
1106
1107                 chip->is_recording = 1;
1108                 snd_azf3328_dbgplay("STARTED CAPTURE\n");
1109                 break;
1110         case SNDRV_PCM_TRIGGER_RESUME:
1111                 snd_azf3328_dbgplay("RESUME CAPTURE\n");
1112                 /* resume recording if we were active */
1113                 if (chip->is_recording)
1114                         snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1115                                 snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS) | DMA_RESUME);
1116                 break;
1117         case SNDRV_PCM_TRIGGER_STOP:
1118                 snd_azf3328_dbgplay("STOP CAPTURE\n");
1119
1120                 spin_lock(&chip->reg_lock);
1121                 /* stop recording */
1122                 status1 = snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS);
1123
1124                 status1 &= ~DMA_RESUME;
1125                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1126
1127                 status1 |= DMA_PLAY_SOMETHING1;
1128                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1129
1130                 status1 &= ~DMA_PLAY_SOMETHING1;
1131                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS, status1);
1132                 spin_unlock(&chip->reg_lock);
1133
1134                 chip->is_recording = 0;
1135                 snd_azf3328_dbgplay("STOPPED CAPTURE\n");
1136                 break;
1137         case SNDRV_PCM_TRIGGER_SUSPEND:
1138                 snd_azf3328_dbgplay("SUSPEND CAPTURE\n");
1139                 /* make sure recording is stopped */
1140                 snd_azf3328_codec_outw(chip, IDX_IO_REC_FLAGS,
1141                         snd_azf3328_codec_inw(chip, IDX_IO_REC_FLAGS) & ~DMA_RESUME);
1142                 break;
1143         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1144                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1145                 break;
1146         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1147                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1148                 break;
1149         default:
1150                 printk(KERN_ERR "FIXME: unknown trigger mode!\n");
1151                 return -EINVAL;
1152         }
1153
1154         snd_azf3328_dbgcallleave();
1155         return result;
1156 }
1157
1158 static snd_pcm_uframes_t
1159 snd_azf3328_playback_pointer(struct snd_pcm_substream *substream)
1160 {
1161         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1162         unsigned long bufptr, result;
1163         snd_pcm_uframes_t frmres;
1164
1165 #ifdef QUERY_HARDWARE
1166         bufptr = inl(chip->codec_port+IDX_IO_PLAY_DMA_START_1);
1167 #else
1168         bufptr = substream->runtime->dma_addr;
1169 #endif
1170         result = inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS);
1171
1172         /* calculate offset */
1173         result -= bufptr;
1174         frmres = bytes_to_frames( substream->runtime, result);
1175         snd_azf3328_dbgplay("PLAY @ 0x%8lx, frames %8ld\n", result, frmres);
1176         return frmres;
1177 }
1178
1179 static snd_pcm_uframes_t
1180 snd_azf3328_capture_pointer(struct snd_pcm_substream *substream)
1181 {
1182         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1183         unsigned long bufptr, result;
1184         snd_pcm_uframes_t frmres;
1185
1186 #ifdef QUERY_HARDWARE
1187         bufptr = inl(chip->codec_port+IDX_IO_REC_DMA_START_1);
1188 #else
1189         bufptr = substream->runtime->dma_addr;
1190 #endif
1191         result = inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS);
1192
1193         /* calculate offset */
1194         result -= bufptr;
1195         frmres = bytes_to_frames( substream->runtime, result);
1196         snd_azf3328_dbgplay("REC  @ 0x%8lx, frames %8ld\n", result, frmres);
1197         return frmres;
1198 }
1199
1200 static irqreturn_t
1201 snd_azf3328_interrupt(int irq, void *dev_id)
1202 {
1203         struct snd_azf3328 *chip = dev_id;
1204         u8 status, which;
1205         static unsigned long irq_count;
1206
1207         status = snd_azf3328_codec_inb(chip, IDX_IO_IRQSTATUS);
1208
1209         /* fast path out, to ease interrupt sharing */
1210         if (!(status & (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_MPU401|IRQ_TIMER)))
1211                 return IRQ_NONE; /* must be interrupt for another device */
1212
1213         snd_azf3328_dbgplay("Interrupt %ld!\nIDX_IO_PLAY_FLAGS %04x, IDX_IO_PLAY_IRQTYPE %04x, IDX_IO_IRQSTATUS %04x\n",
1214                 irq_count,
1215                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_FLAGS),
1216                 snd_azf3328_codec_inw(chip, IDX_IO_PLAY_IRQTYPE),
1217                 status);
1218
1219         if (status & IRQ_TIMER) {
1220                 /* snd_azf3328_dbgplay("timer %ld\n", inl(chip->codec_port+IDX_IO_TIMER_VALUE) & TIMER_VALUE_MASK); */
1221                 if (chip->timer)
1222                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1223                 /* ACK timer */
1224                 spin_lock(&chip->reg_lock);
1225                 snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x07);
1226                 spin_unlock(&chip->reg_lock);
1227                 snd_azf3328_dbgplay("azt3328: timer IRQ\n");
1228         }
1229         if (status & IRQ_PLAYBACK) {
1230                 spin_lock(&chip->reg_lock);
1231                 which = snd_azf3328_codec_inb(chip, IDX_IO_PLAY_IRQTYPE);
1232                 /* ack all IRQ types immediately */
1233                 snd_azf3328_codec_outb(chip, IDX_IO_PLAY_IRQTYPE, which);
1234                 spin_unlock(&chip->reg_lock);
1235
1236                 if (chip->pcm && chip->playback_substream) {
1237                         snd_pcm_period_elapsed(chip->playback_substream);
1238                         snd_azf3328_dbgplay("PLAY period done (#%x), @ %x\n",
1239                                 which,
1240                                 inl(chip->codec_port+IDX_IO_PLAY_DMA_CURRPOS));
1241                 } else
1242                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1243                 if (which & IRQ_PLAY_SOMETHING)
1244                         snd_azf3328_dbgplay("azt3328: unknown play IRQ type occurred, please report!\n");
1245         }
1246         if (status & IRQ_RECORDING) {
1247                 spin_lock(&chip->reg_lock);
1248                 which = snd_azf3328_codec_inb(chip, IDX_IO_REC_IRQTYPE);
1249                 /* ack all IRQ types immediately */
1250                 snd_azf3328_codec_outb(chip, IDX_IO_REC_IRQTYPE, which);
1251                 spin_unlock(&chip->reg_lock);
1252
1253                 if (chip->pcm && chip->capture_substream) {
1254                         snd_pcm_period_elapsed(chip->capture_substream);
1255                         snd_azf3328_dbgplay("REC  period done (#%x), @ %x\n",
1256                                 which,
1257                                 inl(chip->codec_port+IDX_IO_REC_DMA_CURRPOS));
1258                 } else
1259                         snd_azf3328_dbgplay("azt3328: ouch, irq handler problem!\n");
1260                 if (which & IRQ_REC_SOMETHING)
1261                         snd_azf3328_dbgplay("azt3328: unknown rec IRQ type occurred, please report!\n");
1262         }
1263         /* MPU401 has less critical IRQ requirements
1264          * than timer and playback/recording, right? */
1265         if (status & IRQ_MPU401) {
1266                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1267
1268                 /* hmm, do we have to ack the IRQ here somehow?
1269                  * If so, then I don't know how... */
1270                 snd_azf3328_dbgplay("azt3328: MPU401 IRQ\n");
1271         }
1272         irq_count++;
1273         return IRQ_HANDLED;
1274 }
1275
1276 /*****************************************************************/
1277
1278 static const struct snd_pcm_hardware snd_azf3328_playback =
1279 {
1280         /* FIXME!! Correct? */
1281         .info =                 SNDRV_PCM_INFO_MMAP |
1282                                 SNDRV_PCM_INFO_INTERLEAVED |
1283                                 SNDRV_PCM_INFO_MMAP_VALID,
1284         .formats =              SNDRV_PCM_FMTBIT_S8 |
1285                                 SNDRV_PCM_FMTBIT_U8 |
1286                                 SNDRV_PCM_FMTBIT_S16_LE |
1287                                 SNDRV_PCM_FMTBIT_U16_LE,
1288         .rates =                SNDRV_PCM_RATE_5512 |
1289                                 SNDRV_PCM_RATE_8000_48000 |
1290                                 SNDRV_PCM_RATE_KNOT,
1291         .rate_min =             4000,
1292         .rate_max =             66200,
1293         .channels_min =         1,
1294         .channels_max =         2,
1295         .buffer_bytes_max =     65536,
1296         .period_bytes_min =     64,
1297         .period_bytes_max =     65536,
1298         .periods_min =          1,
1299         .periods_max =          1024,
1300         /* FIXME: maybe that card actually has a FIFO?
1301          * Hmm, it seems newer revisions do have one, but we still don't know
1302          * its size... */
1303         .fifo_size =            0,
1304 };
1305
1306 static const struct snd_pcm_hardware snd_azf3328_capture =
1307 {
1308         /* FIXME */
1309         .info =                 SNDRV_PCM_INFO_MMAP |
1310                                 SNDRV_PCM_INFO_INTERLEAVED |
1311                                 SNDRV_PCM_INFO_MMAP_VALID,
1312         .formats =              SNDRV_PCM_FMTBIT_S8 |
1313                                 SNDRV_PCM_FMTBIT_U8 |
1314                                 SNDRV_PCM_FMTBIT_S16_LE |
1315                                 SNDRV_PCM_FMTBIT_U16_LE,
1316         .rates =                SNDRV_PCM_RATE_5512 |
1317                                 SNDRV_PCM_RATE_8000_48000 |
1318                                 SNDRV_PCM_RATE_KNOT,
1319         .rate_min =             4000,
1320         .rate_max =             66200,
1321         .channels_min =         1,
1322         .channels_max =         2,
1323         .buffer_bytes_max =     65536,
1324         .period_bytes_min =     64,
1325         .period_bytes_max =     65536,
1326         .periods_min =          1,
1327         .periods_max =          1024,
1328         .fifo_size =            0,
1329 };
1330
1331
1332 static unsigned int snd_azf3328_fixed_rates[] = {
1333         4000, 4800, 5512, 6620, 8000, 9600, 11025, 13240, 16000, 22050, 32000,
1334         44100, 48000, 66200 };
1335 static struct snd_pcm_hw_constraint_list snd_azf3328_hw_constraints_rates = {
1336         .count = ARRAY_SIZE(snd_azf3328_fixed_rates),
1337         .list = snd_azf3328_fixed_rates,
1338         .mask = 0,
1339 };
1340
1341 /*****************************************************************/
1342
1343 static int
1344 snd_azf3328_playback_open(struct snd_pcm_substream *substream)
1345 {
1346         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1347         struct snd_pcm_runtime *runtime = substream->runtime;
1348
1349         snd_azf3328_dbgcallenter();
1350         chip->playback_substream = substream;
1351         runtime->hw = snd_azf3328_playback;
1352         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1353                                    &snd_azf3328_hw_constraints_rates);
1354         snd_azf3328_dbgcallleave();
1355         return 0;
1356 }
1357
1358 static int
1359 snd_azf3328_capture_open(struct snd_pcm_substream *substream)
1360 {
1361         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1362         struct snd_pcm_runtime *runtime = substream->runtime;
1363
1364         snd_azf3328_dbgcallenter();
1365         chip->capture_substream = substream;
1366         runtime->hw = snd_azf3328_capture;
1367         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1368                                    &snd_azf3328_hw_constraints_rates);
1369         snd_azf3328_dbgcallleave();
1370         return 0;
1371 }
1372
1373 static int
1374 snd_azf3328_playback_close(struct snd_pcm_substream *substream)
1375 {
1376         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1377
1378         snd_azf3328_dbgcallenter();
1379         chip->playback_substream = NULL;
1380         snd_azf3328_dbgcallleave();
1381         return 0;
1382 }
1383
1384 static int
1385 snd_azf3328_capture_close(struct snd_pcm_substream *substream)
1386 {
1387         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1388
1389         snd_azf3328_dbgcallenter();
1390         chip->capture_substream = NULL;
1391         snd_azf3328_dbgcallleave();
1392         return 0;
1393 }
1394
1395 /******************************************************************/
1396
1397 static struct snd_pcm_ops snd_azf3328_playback_ops = {
1398         .open =         snd_azf3328_playback_open,
1399         .close =        snd_azf3328_playback_close,
1400         .ioctl =        snd_pcm_lib_ioctl,
1401         .hw_params =    snd_azf3328_hw_params,
1402         .hw_free =      snd_azf3328_hw_free,
1403         .prepare =      snd_azf3328_playback_prepare,
1404         .trigger =      snd_azf3328_playback_trigger,
1405         .pointer =      snd_azf3328_playback_pointer
1406 };
1407
1408 static struct snd_pcm_ops snd_azf3328_capture_ops = {
1409         .open =         snd_azf3328_capture_open,
1410         .close =        snd_azf3328_capture_close,
1411         .ioctl =        snd_pcm_lib_ioctl,
1412         .hw_params =    snd_azf3328_hw_params,
1413         .hw_free =      snd_azf3328_hw_free,
1414         .prepare =      snd_azf3328_capture_prepare,
1415         .trigger =      snd_azf3328_capture_trigger,
1416         .pointer =      snd_azf3328_capture_pointer
1417 };
1418
1419 static int __devinit
1420 snd_azf3328_pcm(struct snd_azf3328 *chip, int device)
1421 {
1422         struct snd_pcm *pcm;
1423         int err;
1424
1425         snd_azf3328_dbgcallenter();
1426         if ((err = snd_pcm_new(chip->card, "AZF3328 DSP", device, 1, 1, &pcm)) < 0)
1427                 return err;
1428         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_azf3328_playback_ops);
1429         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_azf3328_capture_ops);
1430
1431         pcm->private_data = chip;
1432         pcm->info_flags = 0;
1433         strcpy(pcm->name, chip->card->shortname);
1434         chip->pcm = pcm;
1435
1436         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1437                                               snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1438
1439         snd_azf3328_dbgcallleave();
1440         return 0;
1441 }
1442
1443 /******************************************************************/
1444
1445 #ifdef SUPPORT_JOYSTICK
1446 static int __devinit
1447 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev)
1448 {
1449         struct gameport *gp;
1450         struct resource *r;
1451
1452         if (!joystick[dev])
1453                 return -ENODEV;
1454
1455         if (!(r = request_region(0x200, 8, "AZF3328 gameport"))) {
1456                 printk(KERN_WARNING "azt3328: cannot reserve joystick ports\n");
1457                 return -EBUSY;
1458         }
1459
1460         chip->gameport = gp = gameport_allocate_port();
1461         if (!gp) {
1462                 printk(KERN_ERR "azt3328: cannot allocate memory for gameport\n");
1463                 release_and_free_resource(r);
1464                 return -ENOMEM;
1465         }
1466
1467         gameport_set_name(gp, "AZF3328 Gameport");
1468         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1469         gameport_set_dev_parent(gp, &chip->pci->dev);
1470         gp->io = 0x200;
1471         gameport_set_port_data(gp, r);
1472
1473         snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1474                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) | LEGACY_JOY);
1475
1476         gameport_register_port(chip->gameport);
1477
1478         return 0;
1479 }
1480
1481 static void
1482 snd_azf3328_free_joystick(struct snd_azf3328 *chip)
1483 {
1484         if (chip->gameport) {
1485                 struct resource *r = gameport_get_port_data(chip->gameport);
1486
1487                 gameport_unregister_port(chip->gameport);
1488                 chip->gameport = NULL;
1489                 /* disable gameport */
1490                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1491                                       snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1492                 release_and_free_resource(r);
1493         }
1494 }
1495 #else
1496 static inline int
1497 snd_azf3328_config_joystick(struct snd_azf3328 *chip, int dev) { return -ENOSYS; }
1498 static inline void
1499 snd_azf3328_free_joystick(struct snd_azf3328 *chip) { }
1500 #endif
1501
1502 /******************************************************************/
1503
1504 static int
1505 snd_azf3328_free(struct snd_azf3328 *chip)
1506 {
1507         if (chip->irq < 0)
1508                 goto __end_hw;
1509
1510         /* reset (close) mixer */
1511         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1); /* first mute master volume */
1512         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
1513
1514         /* interrupt setup - mask everything (FIXME!) */
1515         /* well, at least we know how to disable the timer IRQ */
1516         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00);
1517
1518         synchronize_irq(chip->irq);
1519 __end_hw:
1520         snd_azf3328_free_joystick(chip);
1521         if (chip->irq >= 0)
1522                 free_irq(chip->irq, chip);
1523         pci_release_regions(chip->pci);
1524         pci_disable_device(chip->pci);
1525
1526         kfree(chip);
1527         return 0;
1528 }
1529
1530 static int
1531 snd_azf3328_dev_free(struct snd_device *device)
1532 {
1533         struct snd_azf3328 *chip = device->device_data;
1534         return snd_azf3328_free(chip);
1535 }
1536
1537 /******************************************************************/
1538
1539 /*** NOTE: the physical timer resolution actually is 1024000 ticks per second,
1540  *** but announcing those attributes to user-space would make programs
1541  *** configure the timer to a 1 tick value, resulting in an absolutely fatal
1542  *** timer IRQ storm.
1543  *** Thus I chose to announce a down-scaled virtual timer to the outside and
1544  *** calculate real timer countdown values internally.
1545  *** (the scale factor can be set via module parameter "seqtimer_scaling").
1546  ***/
1547
1548 static int
1549 snd_azf3328_timer_start(struct snd_timer *timer)
1550 {
1551         struct snd_azf3328 *chip;
1552         unsigned long flags;
1553         unsigned int delay;
1554
1555         snd_azf3328_dbgcallenter();
1556         chip = snd_timer_chip(timer);
1557         delay = ((timer->sticks * seqtimer_scaling) - 1) & TIMER_VALUE_MASK;
1558         if (delay < 49) {
1559                 /* uhoh, that's not good, since user-space won't know about
1560                  * this timing tweak
1561                  * (we need to do it to avoid a lockup, though) */
1562
1563                 snd_azf3328_dbgtimer("delay was too low (%d)!\n", delay);
1564                 delay = 49; /* minimum time is 49 ticks */
1565         }
1566         snd_azf3328_dbgtimer("setting timer countdown value %d, add COUNTDOWN|IRQ\n", delay);
1567         delay |= TIMER_ENABLE_COUNTDOWN | TIMER_ENABLE_IRQ;
1568         spin_lock_irqsave(&chip->reg_lock, flags);
1569         snd_azf3328_codec_outl(chip, IDX_IO_TIMER_VALUE, delay);
1570         spin_unlock_irqrestore(&chip->reg_lock, flags);
1571         snd_azf3328_dbgcallleave();
1572         return 0;
1573 }
1574
1575 static int
1576 snd_azf3328_timer_stop(struct snd_timer *timer)
1577 {
1578         struct snd_azf3328 *chip;
1579         unsigned long flags;
1580
1581         snd_azf3328_dbgcallenter();
1582         chip = snd_timer_chip(timer);
1583         spin_lock_irqsave(&chip->reg_lock, flags);
1584         /* disable timer countdown and interrupt */
1585         /* FIXME: should we write TIMER_ACK_IRQ here? */
1586         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0);
1587         spin_unlock_irqrestore(&chip->reg_lock, flags);
1588         snd_azf3328_dbgcallleave();
1589         return 0;
1590 }
1591
1592
1593 static int
1594 snd_azf3328_timer_precise_resolution(struct snd_timer *timer,
1595                                                unsigned long *num, unsigned long *den)
1596 {
1597         snd_azf3328_dbgcallenter();
1598         *num = 1;
1599         *den = 1024000 / seqtimer_scaling;
1600         snd_azf3328_dbgcallleave();
1601         return 0;
1602 }
1603
1604 static struct snd_timer_hardware snd_azf3328_timer_hw = {
1605         .flags = SNDRV_TIMER_HW_AUTO,
1606         .resolution = 977, /* 1000000/1024000 = 0.9765625us */
1607         .ticks = 1024000, /* max tick count, defined by the value register; actually it's not 1024000, but 1048576, but we don't care */
1608         .start = snd_azf3328_timer_start,
1609         .stop = snd_azf3328_timer_stop,
1610         .precise_resolution = snd_azf3328_timer_precise_resolution,
1611 };
1612
1613 static int __devinit
1614 snd_azf3328_timer(struct snd_azf3328 *chip, int device)
1615 {
1616         struct snd_timer *timer = NULL;
1617         struct snd_timer_id tid;
1618         int err;
1619
1620         snd_azf3328_dbgcallenter();
1621         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1622         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1623         tid.card = chip->card->number;
1624         tid.device = device;
1625         tid.subdevice = 0;
1626
1627         snd_azf3328_timer_hw.resolution *= seqtimer_scaling;
1628         snd_azf3328_timer_hw.ticks /= seqtimer_scaling;
1629         if ((err = snd_timer_new(chip->card, "AZF3328", &tid, &timer)) < 0) {
1630                 goto out;
1631         }
1632
1633         strcpy(timer->name, "AZF3328 timer");
1634         timer->private_data = chip;
1635         timer->hw = snd_azf3328_timer_hw;
1636
1637         chip->timer = timer;
1638
1639         err = 0;
1640
1641 out:
1642         snd_azf3328_dbgcallleave();
1643         return err;
1644 }
1645
1646 /******************************************************************/
1647
1648 #if 0
1649 /* check whether a bit can be modified */
1650 static void
1651 snd_azf3328_test_bit(unsigned int reg, int bit)
1652 {
1653         unsigned char val, valoff, valon;
1654
1655         val = inb(reg);
1656
1657         outb(val & ~(1 << bit), reg);
1658         valoff = inb(reg);
1659
1660         outb(val|(1 << bit), reg);
1661         valon = inb(reg);
1662
1663         outb(val, reg);
1664
1665         printk(KERN_ERR "reg %04x bit %d: %02x %02x %02x\n", reg, bit, val, valoff, valon);
1666 }
1667 #endif
1668
1669 #if DEBUG_MISC
1670 static void
1671 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip)
1672 {
1673         u16 tmp;
1674
1675         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);
1676
1677         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));
1678
1679         for (tmp=0; tmp <= 0x01; tmp += 1)
1680                 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));
1681
1682         for (tmp = 0; tmp < AZF_IO_SIZE_CODEC; tmp += 2)
1683                 snd_azf3328_dbgmisc("codec 0x%02x: 0x%04x\n", tmp, snd_azf3328_codec_inw(chip, tmp));
1684
1685         for (tmp = 0; tmp < AZF_IO_SIZE_MIXER; tmp += 2)
1686                 snd_azf3328_dbgmisc("mixer 0x%02x: 0x%04x\n", tmp, snd_azf3328_mixer_inw(chip, tmp));
1687 }
1688 #else
1689 static inline void
1690 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip) {}
1691 #endif
1692
1693 static int __devinit
1694 snd_azf3328_create(struct snd_card *card,
1695                                          struct pci_dev *pci,
1696                                          unsigned long device_type,
1697                                          struct snd_azf3328 ** rchip)
1698 {
1699         struct snd_azf3328 *chip;
1700         int err;
1701         static struct snd_device_ops ops = {
1702                 .dev_free =     snd_azf3328_dev_free,
1703         };
1704         u16 tmp;
1705
1706         *rchip = NULL;
1707
1708         if ((err = pci_enable_device(pci)) < 0)
1709                 return err;
1710
1711         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1712         if (chip == NULL) {
1713                 err = -ENOMEM;
1714                 goto out_err;
1715         }
1716         spin_lock_init(&chip->reg_lock);
1717         chip->card = card;
1718         chip->pci = pci;
1719         chip->irq = -1;
1720
1721         /* check if we can restrict PCI DMA transfers to 24 bits */
1722         if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
1723             pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
1724                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
1725                 err = -ENXIO;
1726                 goto out_err;
1727         }
1728
1729         if ((err = pci_request_regions(pci, "Aztech AZF3328")) < 0) {
1730                 goto out_err;
1731         }
1732
1733         chip->codec_port = pci_resource_start(pci, 0);
1734         chip->io2_port   = pci_resource_start(pci, 1);
1735         chip->mpu_port   = pci_resource_start(pci, 2);
1736         chip->synth_port = pci_resource_start(pci, 3);
1737         chip->mixer_port = pci_resource_start(pci, 4);
1738
1739         if (request_irq(pci->irq, snd_azf3328_interrupt,
1740                         IRQF_SHARED, card->shortname, chip)) {
1741                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1742                 err = -EBUSY;
1743                 goto out_err;
1744         }
1745         chip->irq = pci->irq;
1746         pci_set_master(pci);
1747         synchronize_irq(chip->irq);
1748
1749         snd_azf3328_debug_show_ports(chip);
1750
1751         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1752                 goto out_err;
1753         }
1754
1755         /* create mixer interface & switches */
1756         if ((err = snd_azf3328_mixer_new(chip)) < 0)
1757                 goto out_err;
1758
1759 #if 0
1760         /* set very low bitrate to reduce noise and power consumption? */
1761         snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT, 5512, 8, 1);
1762 #endif
1763
1764         /* standard chip init stuff */
1765         /* default IRQ init value */
1766         tmp = DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE;
1767
1768         spin_lock_irq(&chip->reg_lock);
1769         snd_azf3328_codec_outb(chip, IDX_IO_PLAY_FLAGS, tmp);
1770         snd_azf3328_codec_outb(chip, IDX_IO_REC_FLAGS, tmp);
1771         snd_azf3328_codec_outb(chip, IDX_IO_SOMETHING_FLAGS, tmp);
1772         snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00); /* disable timer */
1773         spin_unlock_irq(&chip->reg_lock);
1774
1775         snd_card_set_dev(card, &pci->dev);
1776
1777         *rchip = chip;
1778
1779         err = 0;
1780         goto out;
1781
1782 out_err:
1783         if (chip)
1784                 snd_azf3328_free(chip);
1785         pci_disable_device(pci);
1786
1787 out:
1788         return err;
1789 }
1790
1791 static int __devinit
1792 snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
1793 {
1794         static int dev;
1795         struct snd_card *card;
1796         struct snd_azf3328 *chip;
1797         struct snd_opl3 *opl3;
1798         int err;
1799
1800         snd_azf3328_dbgcallenter();
1801         if (dev >= SNDRV_CARDS)
1802                 return -ENODEV;
1803         if (!enable[dev]) {
1804                 dev++;
1805                 return -ENOENT;
1806         }
1807
1808         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0 );
1809         if (card == NULL)
1810                 return -ENOMEM;
1811
1812         strcpy(card->driver, "AZF3328");
1813         strcpy(card->shortname, "Aztech AZF3328 (PCI168)");
1814
1815         if ((err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1816                 goto out_err;
1817         }
1818
1819         card->private_data = chip;
1820
1821         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_MPU401,
1822                                         chip->mpu_port, MPU401_INFO_INTEGRATED,
1823                                         pci->irq, 0, &chip->rmidi)) < 0) {
1824                 snd_printk(KERN_ERR "azf3328: no MPU-401 device at 0x%lx?\n", chip->mpu_port);
1825                 goto out_err;
1826         }
1827
1828         if ((err = snd_azf3328_timer(chip, 0)) < 0) {
1829                 goto out_err;
1830         }
1831
1832         if ((err = snd_azf3328_pcm(chip, 0)) < 0) {
1833                 goto out_err;
1834         }
1835
1836         if (snd_opl3_create(card, chip->synth_port, chip->synth_port+2,
1837                             OPL3_HW_AUTO, 1, &opl3) < 0) {
1838                 snd_printk(KERN_ERR "azf3328: no OPL3 device at 0x%lx-0x%lx?\n",
1839                            chip->synth_port, chip->synth_port+2 );
1840         } else {
1841                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1842                         goto out_err;
1843                 }
1844         }
1845
1846         opl3->private_data = chip;
1847
1848         sprintf(card->longname, "%s at 0x%lx, irq %i",
1849                 card->shortname, chip->codec_port, chip->irq);
1850
1851         if ((err = snd_card_register(card)) < 0) {
1852                 goto out_err;
1853         }
1854
1855 #ifdef MODULE
1856         printk(
1857 "azt3328: Sound driver for Aztech AZF3328-based soundcards such as PCI168.\n"
1858 "azt3328: Hardware was completely undocumented, unfortunately.\n"
1859 "azt3328: Feel free to contact andi AT lisas.de for bug reports etc.!\n"
1860 "azt3328: User-scalable sequencer timer set to %dHz (1024000Hz / %d).\n",
1861         1024000 / seqtimer_scaling, seqtimer_scaling);
1862 #endif
1863
1864         if (snd_azf3328_config_joystick(chip, dev) < 0)
1865                 snd_azf3328_io2_outb(chip, IDX_IO2_LEGACY_ADDR,
1866                               snd_azf3328_io2_inb(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
1867
1868         pci_set_drvdata(pci, card);
1869         dev++;
1870
1871         err = 0;
1872         goto out;
1873
1874 out_err:
1875         snd_card_free(card);
1876
1877 out:
1878         snd_azf3328_dbgcallleave();
1879         return err;
1880 }
1881
1882 static void __devexit
1883 snd_azf3328_remove(struct pci_dev *pci)
1884 {
1885         snd_azf3328_dbgcallenter();
1886         snd_card_free(pci_get_drvdata(pci));
1887         pci_set_drvdata(pci, NULL);
1888         snd_azf3328_dbgcallleave();
1889 }
1890
1891 #ifdef CONFIG_PM
1892 static int
1893 snd_azf3328_suspend(struct pci_dev *pci, pm_message_t state)
1894 {
1895         struct snd_card *card = pci_get_drvdata(pci);
1896         struct snd_azf3328 *chip = card->private_data;
1897         int reg;
1898
1899         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1900
1901         snd_pcm_suspend_all(chip->pcm);
1902
1903         for (reg = 0; reg < AZF_IO_SIZE_MIXER_PM / 2; reg++)
1904                 chip->saved_regs_mixer[reg] = inw(chip->mixer_port + reg * 2);
1905
1906         /* make sure to disable master volume etc. to prevent looping sound */
1907         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1);
1908         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
1909
1910         for (reg = 0; reg < AZF_IO_SIZE_CODEC_PM / 2; reg++)
1911                 chip->saved_regs_codec[reg] = inw(chip->codec_port + reg * 2);
1912         for (reg = 0; reg < AZF_IO_SIZE_IO2_PM / 2; reg++)
1913                 chip->saved_regs_io2[reg] = inw(chip->io2_port + reg * 2);
1914         for (reg = 0; reg < AZF_IO_SIZE_MPU_PM / 2; reg++)
1915                 chip->saved_regs_mpu[reg] = inw(chip->mpu_port + reg * 2);
1916         for (reg = 0; reg < AZF_IO_SIZE_SYNTH_PM / 2; reg++)
1917                 chip->saved_regs_synth[reg] = inw(chip->synth_port + reg * 2);
1918
1919         pci_disable_device(pci);
1920         pci_save_state(pci);
1921         pci_set_power_state(pci, pci_choose_state(pci, state));
1922         return 0;
1923 }
1924
1925 static int
1926 snd_azf3328_resume(struct pci_dev *pci)
1927 {
1928         struct snd_card *card = pci_get_drvdata(pci);
1929         struct snd_azf3328 *chip = card->private_data;
1930         int reg;
1931
1932         pci_set_power_state(pci, PCI_D0);
1933         pci_restore_state(pci);
1934         if (pci_enable_device(pci) < 0) {
1935                 printk(KERN_ERR "azt3328: pci_enable_device failed, "
1936                        "disabling device\n");
1937                 snd_card_disconnect(card);
1938                 return -EIO;
1939         }
1940         pci_set_master(pci);
1941
1942         for (reg = 0; reg < AZF_IO_SIZE_IO2_PM / 2; reg++)
1943                 outw(chip->saved_regs_io2[reg], chip->io2_port + reg * 2);
1944         for (reg = 0; reg < AZF_IO_SIZE_MPU_PM / 2; reg++)
1945                 outw(chip->saved_regs_mpu[reg], chip->mpu_port + reg * 2);
1946         for (reg = 0; reg < AZF_IO_SIZE_SYNTH_PM / 2; reg++)
1947                 outw(chip->saved_regs_synth[reg], chip->synth_port + reg * 2);
1948         for (reg = 0; reg < AZF_IO_SIZE_MIXER_PM / 2; reg++)
1949                 outw(chip->saved_regs_mixer[reg], chip->mixer_port + reg * 2);
1950         for (reg = 0; reg < AZF_IO_SIZE_CODEC_PM / 2; reg++)
1951                 outw(chip->saved_regs_codec[reg], chip->codec_port + reg * 2);
1952
1953         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1954         return 0;
1955 }
1956 #endif
1957
1958
1959
1960
1961 static struct pci_driver driver = {
1962         .name = "AZF3328",
1963         .id_table = snd_azf3328_ids,
1964         .probe = snd_azf3328_probe,
1965         .remove = __devexit_p(snd_azf3328_remove),
1966 #ifdef CONFIG_PM
1967         .suspend = snd_azf3328_suspend,
1968         .resume = snd_azf3328_resume,
1969 #endif
1970 };
1971
1972 static int __init
1973 alsa_card_azf3328_init(void)
1974 {
1975         int err;
1976         snd_azf3328_dbgcallenter();
1977         err = pci_register_driver(&driver);
1978         snd_azf3328_dbgcallleave();
1979         return err;
1980 }
1981
1982 static void __exit
1983 alsa_card_azf3328_exit(void)
1984 {
1985         snd_azf3328_dbgcallenter();
1986         pci_unregister_driver(&driver);
1987         snd_azf3328_dbgcallleave();
1988 }
1989
1990 module_init(alsa_card_azf3328_init)
1991 module_exit(alsa_card_azf3328_exit)