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Linux/sound/pci/azt3328.c

  1 /*  azt3328.c - driver for Aztech AZF3328 based soundcards (e.g. PCI168).
  2  *  Copyright (C) 2002, 2005 - 2011 by Andreas Mohr <andi AT lisas.de>
  3  *
  4  *  Framework borrowed from Bart Hartgers's als4000.c.
  5  *  Driver developed on PCI168 AP(W) version (PCI rev. 10, subsystem ID 1801),
  6  *  found in a Fujitsu-Siemens PC ("Cordant", aluminum case).
  7  *  Other versions are:
  8  *  PCI168 A(W), sub ID 1800
  9  *  PCI168 A/AP, sub ID 8000
 10  *  Please give me feedback in case you try my driver with one of these!!
 11  *
 12  *  Keywords: Windows XP Vista 168nt4-125.zip 168win95-125.zip PCI 168 download
 13  *  (XP/Vista do not support this card at all but every Linux distribution
 14  *   has very good support out of the box;
 15  *   just to make sure that the right people hit this and get to know that,
 16  *   despite the high level of Internet ignorance - as usual :-P -
 17  *   about very good support for this card - on Linux!)
 18  *
 19  * GPL LICENSE
 20  *  This program is free software; you can redistribute it and/or modify
 21  *  it under the terms of the GNU General Public License as published by
 22  *  the Free Software Foundation; either version 2 of the License, or
 23  *  (at your option) any later version.
 24  *
 25  *  This program is distributed in the hope that it will be useful,
 26  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 27  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 28  *  GNU General Public License for more details.
 29 
 30  *  You should have received a copy of the GNU General Public License
 31  *  along with this program; if not, write to the Free Software
 32  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 33  *
 34  * NOTES
 35  *  Since Aztech does not provide any chipset documentation,
 36  *  even on repeated request to various addresses,
 37  *  and the answer that was finally given was negative
 38  *  (and I was stupid enough to manage to get hold of a PCI168 soundcard
 39  *  in the first place >:-P}),
 40  *  I was forced to base this driver on reverse engineering
 41  *  (3 weeks' worth of evenings filled with driver work).
 42  *  (and no, I did NOT go the easy way: to pick up a SB PCI128 for 9 Euros)
 43  *
 44  *  It is quite likely that the AZF3328 chip is the PCI cousin of the
 45  *  AZF3318 ("azt1020 pnp", "MM Pro 16") ISA chip, given very similar specs.
 46  *
 47  *  The AZF3328 chip (note: AZF3328, *not* AZT3328, that's just the driver name
 48  *  for compatibility reasons) from Azfin (joint-venture of Aztech and Fincitec,
 49  *  Fincitec acquired by National Semiconductor in 2002, together with the
 50  *  Fincitec-related company ARSmikro) has the following features:
 51  *
 52  *  - compatibility & compliance:
 53  *    - Microsoft PC 97 ("PC 97 Hardware Design Guide",
 54  *                       http://www.microsoft.com/whdc/archive/pcguides.mspx)
 55  *    - Microsoft PC 98 Baseline Audio
 56  *    - MPU401 UART
 57  *    - Sound Blaster Emulation (DOS Box)
 58  *  - builtin AC97 conformant codec (SNR over 80dB)
 59  *    Note that "conformant" != "compliant"!! this chip's mixer register layout
 60  *    *differs* from the standard AC97 layout:
 61  *    they chose to not implement the headphone register (which is not a
 62  *    problem since it's merely optional), yet when doing this, they committed
 63  *    the grave sin of letting other registers follow immediately instead of
 64  *    keeping a headphone dummy register, thereby shifting the mixer register
 65  *    addresses illegally. So far unfortunately it looks like the very flexible
 66  *    ALSA AC97 support is still not enough to easily compensate for such a
 67  *    grave layout violation despite all tweaks and quirks mechanisms it offers.
 68  *    Well, not quite: now ac97 layer is much improved (bus-specific ops!),
 69  *    thus I was able to implement support - it's actually working quite well.
 70  *    An interesting item might be Aztech AMR 2800-W, since it's an AC97
 71  *    modem card which might reveal the Aztech-specific codec ID which
 72  *    we might want to pretend, too. Dito PCI168's brother, PCI368,
 73  *    where the advertising datasheet says it's AC97-based and has a
 74  *    Digital Enhanced Game Port.
 75  *  - builtin genuine OPL3 - verified to work fine, 20080506
 76  *  - full duplex 16bit playback/record at independent sampling rate
 77  *  - MPU401 (+ legacy address support, claimed by one official spec sheet)
 78  *    FIXME: how to enable legacy addr??
 79  *  - game port (legacy address support)
 80  *  - builtin DirectInput support, helps reduce CPU overhead (interrupt-driven
 81  *    features supported). - See common term "Digital Enhanced Game Port"...
 82  *    (probably DirectInput 3.0 spec - confirm)
 83  *  - builtin 3D enhancement (said to be YAMAHA Ymersion)
 84  *  - built-in General DirectX timer having a 20 bits counter
 85  *    with 1us resolution (see below!)
 86  *  - I2S serial output port for external DAC
 87  *    [FIXME: 3.3V or 5V level? maximum rate is 66.2kHz right?]
 88  *  - supports 33MHz PCI spec 2.1, PCI power management 1.0, compliant with ACPI
 89  *  - supports hardware volume control
 90  *  - single chip low cost solution (128 pin QFP)
 91  *  - supports programmable Sub-vendor and Sub-system ID [24C02 SEEPROM chip]
 92  *    required for Microsoft's logo compliance (FIXME: where?)
 93  *    At least the Trident 4D Wave DX has one bit somewhere
 94  *    to enable writes to PCI subsystem VID registers, that should be it.
 95  *    This might easily be in extended PCI reg space, since PCI168 also has
 96  *    some custom data starting at 0x80. What kind of config settings
 97  *    are located in our extended PCI space anyway??
 98  *  - PCI168 AP(W) card: power amplifier with 4 Watts/channel at 4 Ohms
 99  *    [TDA1517P chip]
100  *
101  *  Note that this driver now is actually *better* than the Windows driver,
102  *  since it additionally supports the card's 1MHz DirectX timer - just try
103  *  the following snd-seq module parameters etc.:
104  *  - options snd-seq seq_default_timer_class=2 seq_default_timer_sclass=0
105  *    seq_default_timer_card=0 seq_client_load=1 seq_default_timer_device=0
106  *    seq_default_timer_subdevice=0 seq_default_timer_resolution=1000000
107  *  - "timidity -iAv -B2,8 -Os -EFreverb=0"
108  *  - "pmidi -p 128:0 jazz.mid"
109  *
110  *  OPL3 hardware playback testing, try something like:
111  *  cat /proc/asound/hwdep
112  *  and
113  *  aconnect -o
114  *  Then use
115  *  sbiload -Dhw:x,y --opl3 /usr/share/sounds/opl3/std.o3 ......./drums.o3
116  *  where x,y is the xx-yy number as given in hwdep.
117  *  Then try
118  *  pmidi -p a:b jazz.mid
119  *  where a:b is the client number plus 0 usually, as given by aconnect above.
120  *  Oh, and make sure to unmute the FM mixer control (doh!)
121  *  NOTE: power use during OPL3 playback is _VERY_ high (70W --> 90W!)
122  *  despite no CPU activity, possibly due to hindering ACPI idling somehow.
123  *  Shouldn't be a problem of the AZF3328 chip itself, I'd hope.
124  *  Higher PCM / FM mixer levels seem to conflict (causes crackling),
125  *  at least sometimes.   Maybe even use with hardware sequencer timer above :)
126  *  adplay/adplug-utils might soon offer hardware-based OPL3 playback, too.
127  *
128  *  Certain PCI versions of this card are susceptible to DMA traffic underruns
129  *  in some systems (resulting in sound crackling/clicking/popping),
130  *  probably because they don't have a DMA FIFO buffer or so.
131  *  Overview (PCI ID/PCI subID/PCI rev.):
132  *  - no DMA crackling on SiS735: 0x50DC/0x1801/16
133  *  - unknown performance: 0x50DC/0x1801/10
134  *    (well, it's not bad on an Athlon 1800 with now very optimized IRQ handler)
135  *
136  *  Crackling happens with VIA chipsets or, in my case, an SiS735, which is
137  *  supposed to be very fast and supposed to get rid of crackling much
138  *  better than a VIA, yet ironically I still get crackling, like many other
139  *  people with the same chipset.
140  *  Possible remedies:
141  *  - use speaker (amplifier) output instead of headphone output
142  *    (in case crackling is due to overloaded output clipping)
143  *  - plug card into a different PCI slot, preferably one that isn't shared
144  *    too much (this helps a lot, but not completely!)
145  *  - get rid of PCI VGA card, use AGP instead
146  *  - upgrade or downgrade BIOS
147  *  - fiddle with PCI latency settings (setpci -v -s BUSID latency_timer=XX)
148  *    Not too helpful.
149  *  - Disable ACPI/power management/"Auto Detect RAM/PCI Clk" in BIOS
150  *
151  * BUGS
152  *  - full-duplex might *still* be problematic, however a recent test was fine
153  *  - (non-bug) "Bass/Treble or 3D settings don't work" - they do get evaluated
154  *    if you set PCM output switch to "pre 3D" instead of "post 3D".
155  *    If this can't be set, then get a mixer application that Isn't Stupid (tm)
156  *    (e.g. kmix, gamix) - unfortunately several are!!
157  *  - locking is not entirely clean, especially the audio stream activity
158  *    ints --> may be racy
159  *  - an _unconnected_ secondary joystick at the gameport will be reported
160  *    to be "active" (floating values, not precisely -1) due to the way we need
161  *    to read the Digital Enhanced Game Port. Not sure whether it is fixable.
162  *
163  * TODO
164  *  - use PCI_VDEVICE
165  *  - verify driver status on x86_64
166  *  - test multi-card driver operation
167  *  - (ab)use 1MHz DirectX timer as kernel clocksource
168  *  - test MPU401 MIDI playback etc.
169  *  - add more power micro-management (disable various units of the card
170  *    as long as they're unused, to improve audio quality and save power).
171  *    However this requires more I/O ports which I haven't figured out yet
172  *    and which thus might not even exist...
173  *    The standard suspend/resume functionality could probably make use of
174  *    some improvement, too...
175  *  - figure out what all unknown port bits are responsible for
176  *  - figure out some cleverly evil scheme to possibly make ALSA AC97 code
177  *    fully accept our quite incompatible ""AC97"" mixer and thus save some
178  *    code (but I'm not too optimistic that doing this is possible at all)
179  *  - use MMIO (memory-mapped I/O)? Slightly faster access, e.g. for gameport.
180  */
181 
182 #include <linux/io.h>
183 #include <linux/init.h>
184 #include <linux/bug.h> /* WARN_ONCE */
185 #include <linux/pci.h>
186 #include <linux/delay.h>
187 #include <linux/slab.h>
188 #include <linux/gameport.h>
189 #include <linux/module.h>
190 #include <linux/dma-mapping.h>
191 #include <sound/core.h>
192 #include <sound/control.h>
193 #include <sound/pcm.h>
194 #include <sound/rawmidi.h>
195 #include <sound/mpu401.h>
196 #include <sound/opl3.h>
197 #include <sound/initval.h>
198 /*
199  * Config switch, to use ALSA's AC97 layer instead of old custom mixer crap.
200  * If the AC97 compatibility parts we needed to implement locally turn out
201  * to work nicely, then remove the old implementation eventually.
202  */
203 #define AZF_USE_AC97_LAYER 1
204 
205 #ifdef AZF_USE_AC97_LAYER
206 #include <sound/ac97_codec.h>
207 #endif
208 #include "azt3328.h"
209 
210 MODULE_AUTHOR("Andreas Mohr <andi AT lisas.de>");
211 MODULE_DESCRIPTION("Aztech AZF3328 (PCI168)");
212 MODULE_LICENSE("GPL");
213 MODULE_SUPPORTED_DEVICE("{{Aztech,AZF3328}}");
214 
215 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
216 #define SUPPORT_GAMEPORT 1
217 #endif
218 
219 /* === Debug settings ===
220   Further diagnostic functionality than the settings below
221   does not need to be provided, since one can easily write a POSIX shell script
222   to dump the card's I/O ports (those listed in lspci -v -v):
223   dump()
224   {
225     local descr=$1; local addr=$2; local count=$3
226 
227     echo "${descr}: ${count} @ ${addr}:"
228     dd if=/dev/port skip=`printf %d ${addr}` count=${count} bs=1 \
229       2>/dev/null| hexdump -C
230   }
231   and then use something like
232   "dump joy200 0x200 8", "dump mpu388 0x388 4", "dump joy 0xb400 8",
233   "dump codec00 0xa800 32", "dump mixer 0xb800 64", "dump synth 0xbc00 8",
234   possibly within a "while true; do ... sleep 1; done" loop.
235   Tweaking ports could be done using
236   VALSTRING="`printf "%02x" $value`"
237   printf "\x""$VALSTRING"|dd of=/dev/port seek=`printf %d ${addr}` bs=1 \
238     2>/dev/null
239 */
240 
241 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
242 module_param_array(index, int, NULL, 0444);
243 MODULE_PARM_DESC(index, "Index value for AZF3328 soundcard.");
244 
245 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
246 module_param_array(id, charp, NULL, 0444);
247 MODULE_PARM_DESC(id, "ID string for AZF3328 soundcard.");
248 
249 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
250 module_param_array(enable, bool, NULL, 0444);
251 MODULE_PARM_DESC(enable, "Enable AZF3328 soundcard.");
252 
253 static int seqtimer_scaling = 128;
254 module_param(seqtimer_scaling, int, 0444);
255 MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (lockup danger!). Default 128.");
256 
257 enum snd_azf3328_codec_type {
258   /* warning: fixed indices (also used for bitmask checks!) */
259   AZF_CODEC_PLAYBACK = 0,
260   AZF_CODEC_CAPTURE = 1,
261   AZF_CODEC_I2S_OUT = 2,
262 };
263 
264 struct snd_azf3328_codec_data {
265         unsigned long io_base; /* keep first! (avoid offset calc) */
266         unsigned int dma_base; /* helper to avoid an indirection in hotpath */
267         spinlock_t *lock; /* TODO: convert to our own per-codec lock member */
268         struct snd_pcm_substream *substream;
269         bool running;
270         enum snd_azf3328_codec_type type;
271         const char *name;
272 };
273 
274 struct snd_azf3328 {
275         /* often-used fields towards beginning, then grouped */
276 
277         unsigned long ctrl_io; /* usually 0xb000, size 128 */
278         unsigned long game_io;  /* usually 0xb400, size 8 */
279         unsigned long mpu_io;   /* usually 0xb800, size 4 */
280         unsigned long opl3_io; /* usually 0xbc00, size 8 */
281         unsigned long mixer_io; /* usually 0xc000, size 64 */
282 
283         spinlock_t reg_lock;
284 
285         struct snd_timer *timer;
286 
287         struct snd_pcm *pcm[3];
288 
289         /* playback, recording and I2S out codecs */
290         struct snd_azf3328_codec_data codecs[3];
291 
292 #ifdef AZF_USE_AC97_LAYER
293         struct snd_ac97 *ac97;
294 #endif
295 
296         struct snd_card *card;
297         struct snd_rawmidi *rmidi;
298 
299 #ifdef SUPPORT_GAMEPORT
300         struct gameport *gameport;
301         u16 axes[4];
302 #endif
303 
304         struct pci_dev *pci;
305         int irq;
306 
307         /* register 0x6a is write-only, thus need to remember setting.
308          * If we need to add more registers here, then we might try to fold this
309          * into some transparent combined shadow register handling with
310          * CONFIG_PM register storage below, but that's slightly difficult. */
311         u16 shadow_reg_ctrl_6AH;
312 
313 #ifdef CONFIG_PM_SLEEP
314         /* register value containers for power management
315          * Note: not always full I/O range preserved (similar to Win driver!) */
316         u32 saved_regs_ctrl[AZF_ALIGN(AZF_IO_SIZE_CTRL_PM) / 4];
317         u32 saved_regs_game[AZF_ALIGN(AZF_IO_SIZE_GAME_PM) / 4];
318         u32 saved_regs_mpu[AZF_ALIGN(AZF_IO_SIZE_MPU_PM) / 4];
319         u32 saved_regs_opl3[AZF_ALIGN(AZF_IO_SIZE_OPL3_PM) / 4];
320         u32 saved_regs_mixer[AZF_ALIGN(AZF_IO_SIZE_MIXER_PM) / 4];
321 #endif
322 };
323 
324 static const struct pci_device_id snd_azf3328_ids[] = {
325         { 0x122D, 0x50DC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* PCI168/3328 */
326         { 0x122D, 0x80DA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* 3328 */
327         { 0, }
328 };
329 
330 MODULE_DEVICE_TABLE(pci, snd_azf3328_ids);
331 
332 
333 static int
334 snd_azf3328_io_reg_setb(unsigned reg, u8 mask, bool do_set)
335 {
336         /* Well, strictly spoken, the inb/outb sequence isn't atomic
337            and would need locking. However we currently don't care
338            since it potentially complicates matters. */
339         u8 prev = inb(reg), new;
340 
341         new = (do_set) ? (prev|mask) : (prev & ~mask);
342         /* we need to always write the new value no matter whether it differs
343          * or not, since some register bits don't indicate their setting */
344         outb(new, reg);
345         if (new != prev)
346                 return 1;
347 
348         return 0;
349 }
350 
351 static inline void
352 snd_azf3328_codec_outb(const struct snd_azf3328_codec_data *codec,
353                        unsigned reg,
354                        u8 value
355 )
356 {
357         outb(value, codec->io_base + reg);
358 }
359 
360 static inline u8
361 snd_azf3328_codec_inb(const struct snd_azf3328_codec_data *codec, unsigned reg)
362 {
363         return inb(codec->io_base + reg);
364 }
365 
366 static inline void
367 snd_azf3328_codec_outw(const struct snd_azf3328_codec_data *codec,
368                        unsigned reg,
369                        u16 value
370 )
371 {
372         outw(value, codec->io_base + reg);
373 }
374 
375 static inline u16
376 snd_azf3328_codec_inw(const struct snd_azf3328_codec_data *codec, unsigned reg)
377 {
378         return inw(codec->io_base + reg);
379 }
380 
381 static inline void
382 snd_azf3328_codec_outl(const struct snd_azf3328_codec_data *codec,
383                        unsigned reg,
384                        u32 value
385 )
386 {
387         outl(value, codec->io_base + reg);
388 }
389 
390 static inline void
391 snd_azf3328_codec_outl_multi(const struct snd_azf3328_codec_data *codec,
392                              unsigned reg, const void *buffer, int count
393 )
394 {
395         unsigned long addr = codec->io_base + reg;
396         if (count) {
397                 const u32 *buf = buffer;
398                 do {
399                         outl(*buf++, addr);
400                         addr += 4;
401                 } while (--count);
402         }
403 }
404 
405 static inline u32
406 snd_azf3328_codec_inl(const struct snd_azf3328_codec_data *codec, unsigned reg)
407 {
408         return inl(codec->io_base + reg);
409 }
410 
411 static inline void
412 snd_azf3328_ctrl_outb(const struct snd_azf3328 *chip, unsigned reg, u8 value)
413 {
414         outb(value, chip->ctrl_io + reg);
415 }
416 
417 static inline u8
418 snd_azf3328_ctrl_inb(const struct snd_azf3328 *chip, unsigned reg)
419 {
420         return inb(chip->ctrl_io + reg);
421 }
422 
423 static inline u16
424 snd_azf3328_ctrl_inw(const struct snd_azf3328 *chip, unsigned reg)
425 {
426         return inw(chip->ctrl_io + reg);
427 }
428 
429 static inline void
430 snd_azf3328_ctrl_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
431 {
432         outw(value, chip->ctrl_io + reg);
433 }
434 
435 static inline void
436 snd_azf3328_ctrl_outl(const struct snd_azf3328 *chip, unsigned reg, u32 value)
437 {
438         outl(value, chip->ctrl_io + reg);
439 }
440 
441 static inline void
442 snd_azf3328_game_outb(const struct snd_azf3328 *chip, unsigned reg, u8 value)
443 {
444         outb(value, chip->game_io + reg);
445 }
446 
447 static inline void
448 snd_azf3328_game_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
449 {
450         outw(value, chip->game_io + reg);
451 }
452 
453 static inline u8
454 snd_azf3328_game_inb(const struct snd_azf3328 *chip, unsigned reg)
455 {
456         return inb(chip->game_io + reg);
457 }
458 
459 static inline u16
460 snd_azf3328_game_inw(const struct snd_azf3328 *chip, unsigned reg)
461 {
462         return inw(chip->game_io + reg);
463 }
464 
465 static inline void
466 snd_azf3328_mixer_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
467 {
468         outw(value, chip->mixer_io + reg);
469 }
470 
471 static inline u16
472 snd_azf3328_mixer_inw(const struct snd_azf3328 *chip, unsigned reg)
473 {
474         return inw(chip->mixer_io + reg);
475 }
476 
477 #define AZF_MUTE_BIT 0x80
478 
479 static bool
480 snd_azf3328_mixer_mute_control(const struct snd_azf3328 *chip,
481                            unsigned reg, bool do_mute
482 )
483 {
484         unsigned long portbase = chip->mixer_io + reg + 1;
485         bool updated;
486 
487         /* the mute bit is on the *second* (i.e. right) register of a
488          * left/right channel setting */
489         updated = snd_azf3328_io_reg_setb(portbase, AZF_MUTE_BIT, do_mute);
490 
491         /* indicate whether it was muted before */
492         return (do_mute) ? !updated : updated;
493 }
494 
495 static inline bool
496 snd_azf3328_mixer_mute_control_master(const struct snd_azf3328 *chip,
497                            bool do_mute
498 )
499 {
500         return snd_azf3328_mixer_mute_control(
501                 chip,
502                 IDX_MIXER_PLAY_MASTER,
503                 do_mute
504         );
505 }
506 
507 static inline bool
508 snd_azf3328_mixer_mute_control_pcm(const struct snd_azf3328 *chip,
509                            bool do_mute
510 )
511 {
512         return snd_azf3328_mixer_mute_control(
513                 chip,
514                 IDX_MIXER_WAVEOUT,
515                 do_mute
516         );
517 }
518 
519 static inline void
520 snd_azf3328_mixer_reset(const struct snd_azf3328 *chip)
521 {
522         /* reset (close) mixer:
523          * first mute master volume, then reset
524          */
525         snd_azf3328_mixer_mute_control_master(chip, 1);
526         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
527 }
528 
529 #ifdef AZF_USE_AC97_LAYER
530 
531 static inline void
532 snd_azf3328_mixer_ac97_map_unsupported(const struct snd_azf3328 *chip,
533                                        unsigned short reg, const char *mode)
534 {
535         /* need to add some more or less clever emulation? */
536         dev_warn(chip->card->dev,
537                 "missing %s emulation for AC97 register 0x%02x!\n",
538                 mode, reg);
539 }
540 
541 /*
542  * Need to have _special_ AC97 mixer hardware register index mapper,
543  * to compensate for the issue of a rather AC97-incompatible hardware layout.
544  */
545 #define AZF_REG_MASK 0x3f
546 #define AZF_AC97_REG_UNSUPPORTED 0x8000
547 #define AZF_AC97_REG_REAL_IO_READ 0x4000
548 #define AZF_AC97_REG_REAL_IO_WRITE 0x2000
549 #define AZF_AC97_REG_REAL_IO_RW \
550         (AZF_AC97_REG_REAL_IO_READ | AZF_AC97_REG_REAL_IO_WRITE)
551 #define AZF_AC97_REG_EMU_IO_READ 0x0400
552 #define AZF_AC97_REG_EMU_IO_WRITE 0x0200
553 #define AZF_AC97_REG_EMU_IO_RW \
554         (AZF_AC97_REG_EMU_IO_READ | AZF_AC97_REG_EMU_IO_WRITE)
555 static unsigned short
556 snd_azf3328_mixer_ac97_map_reg_idx(unsigned short reg)
557 {
558         static const struct {
559                 unsigned short azf_reg;
560         } azf_reg_mapper[] = {
561                 /* Especially when taking into consideration
562                  * mono/stereo-based sequence of azf vs. AC97 control series,
563                  * it's quite obvious that azf simply got rid
564                  * of the AC97_HEADPHONE control at its intended offset,
565                  * thus shifted _all_ controls by one,
566                  * and _then_ simply added it as an FMSYNTH control at the end,
567                  * to make up for the offset.
568                  * This means we'll have to translate indices here as
569                  * needed and then do some tiny AC97 patch action
570                  * (snd_ac97_rename_vol_ctl() etc.) - that's it.
571                  */
572                 { /* AC97_RESET */ IDX_MIXER_RESET
573                         | AZF_AC97_REG_REAL_IO_WRITE
574                         | AZF_AC97_REG_EMU_IO_READ },
575                 { /* AC97_MASTER */ IDX_MIXER_PLAY_MASTER },
576                  /* note large shift: AC97_HEADPHONE to IDX_MIXER_FMSYNTH! */
577                 { /* AC97_HEADPHONE */ IDX_MIXER_FMSYNTH },
578                 { /* AC97_MASTER_MONO */ IDX_MIXER_MODEMOUT },
579                 { /* AC97_MASTER_TONE */ IDX_MIXER_BASSTREBLE },
580                 { /* AC97_PC_BEEP */ IDX_MIXER_PCBEEP },
581                 { /* AC97_PHONE */ IDX_MIXER_MODEMIN },
582                 { /* AC97_MIC */ IDX_MIXER_MIC },
583                 { /* AC97_LINE */ IDX_MIXER_LINEIN },
584                 { /* AC97_CD */ IDX_MIXER_CDAUDIO },
585                 { /* AC97_VIDEO */ IDX_MIXER_VIDEO },
586                 { /* AC97_AUX */ IDX_MIXER_AUX },
587                 { /* AC97_PCM */ IDX_MIXER_WAVEOUT },
588                 { /* AC97_REC_SEL */ IDX_MIXER_REC_SELECT },
589                 { /* AC97_REC_GAIN */ IDX_MIXER_REC_VOLUME },
590                 { /* AC97_REC_GAIN_MIC */ AZF_AC97_REG_EMU_IO_RW },
591                 { /* AC97_GENERAL_PURPOSE */ IDX_MIXER_ADVCTL2 },
592                 { /* AC97_3D_CONTROL */ IDX_MIXER_ADVCTL1 },
593         };
594 
595         unsigned short reg_azf = AZF_AC97_REG_UNSUPPORTED;
596 
597         /* azf3328 supports the low-numbered and low-spec:ed range
598            of AC97 regs only */
599         if (reg <= AC97_3D_CONTROL) {
600                 unsigned short reg_idx = reg / 2;
601                 reg_azf = azf_reg_mapper[reg_idx].azf_reg;
602                 /* a translation-only entry means it's real read/write: */
603                 if (!(reg_azf & ~AZF_REG_MASK))
604                         reg_azf |= AZF_AC97_REG_REAL_IO_RW;
605         } else {
606                 switch (reg) {
607                 case AC97_POWERDOWN:
608                         reg_azf = AZF_AC97_REG_EMU_IO_RW;
609                         break;
610                 case AC97_EXTENDED_ID:
611                         reg_azf = AZF_AC97_REG_EMU_IO_READ;
612                         break;
613                 case AC97_EXTENDED_STATUS:
614                         /* I don't know what the h*ll AC97 layer
615                          * would consult this _extended_ register for
616                          * given a base-AC97-advertised card,
617                          * but let's just emulate it anyway :-P
618                          */
619                         reg_azf = AZF_AC97_REG_EMU_IO_RW;
620                         break;
621                 case AC97_VENDOR_ID1:
622                 case AC97_VENDOR_ID2:
623                         reg_azf = AZF_AC97_REG_EMU_IO_READ;
624                         break;
625                 }
626         }
627         return reg_azf;
628 }
629 
630 static const unsigned short
631 azf_emulated_ac97_caps =
632         AC97_BC_DEDICATED_MIC |
633         AC97_BC_BASS_TREBLE |
634         /* Headphone is an FM Synth control here */
635         AC97_BC_HEADPHONE |
636         /* no AC97_BC_LOUDNESS! */
637         /* mask 0x7c00 is
638            vendor-specific 3D enhancement
639            vendor indicator.
640            Since there actually _is_ an
641            entry for Aztech Labs
642            (13), make damn sure
643            to indicate it. */
644         (13 << 10);
645 
646 static const unsigned short
647 azf_emulated_ac97_powerdown =
648         /* pretend everything to be active */
649                 AC97_PD_ADC_STATUS |
650                 AC97_PD_DAC_STATUS |
651                 AC97_PD_MIXER_STATUS |
652                 AC97_PD_VREF_STATUS;
653 
654 /*
655  * Emulated, _inofficial_ vendor ID
656  * (there might be some devices such as the MR 2800-W
657  * which could reveal the real Aztech AC97 ID).
658  * We choose to use "AZT" prefix, and then use 1 to indicate PCI168
659  * (better don't use 0x68 since there's a PCI368 as well).
660  */
661 static const unsigned int
662 azf_emulated_ac97_vendor_id = 0x415a5401;
663 
664 static unsigned short
665 snd_azf3328_mixer_ac97_read(struct snd_ac97 *ac97, unsigned short reg_ac97)
666 {
667         const struct snd_azf3328 *chip = ac97->private_data;
668         unsigned short reg_azf = snd_azf3328_mixer_ac97_map_reg_idx(reg_ac97);
669         unsigned short reg_val = 0;
670         bool unsupported = false;
671 
672         dev_dbg(chip->card->dev, "snd_azf3328_mixer_ac97_read reg_ac97 %u\n",
673                 reg_ac97);
674         if (reg_azf & AZF_AC97_REG_UNSUPPORTED)
675                 unsupported = true;
676         else {
677                 if (reg_azf & AZF_AC97_REG_REAL_IO_READ)
678                         reg_val = snd_azf3328_mixer_inw(chip,
679                                                 reg_azf & AZF_REG_MASK);
680                 else {
681                         /*
682                          * Proceed with dummy I/O read,
683                          * to ensure compatible timing where this may matter.
684                          * (ALSA AC97 layer usually doesn't call I/O functions
685                          * due to intelligent I/O caching anyway)
686                          * Choose a mixer register that's thoroughly unrelated
687                          * to common audio (try to minimize distortion).
688                          */
689                         snd_azf3328_mixer_inw(chip, IDX_MIXER_SOMETHING30H);
690                 }
691 
692                 if (reg_azf & AZF_AC97_REG_EMU_IO_READ) {
693                         switch (reg_ac97) {
694                         case AC97_RESET:
695                                 reg_val |= azf_emulated_ac97_caps;
696                                 break;
697                         case AC97_POWERDOWN:
698                                 reg_val |= azf_emulated_ac97_powerdown;
699                                 break;
700                         case AC97_EXTENDED_ID:
701                         case AC97_EXTENDED_STATUS:
702                                 /* AFAICS we simply can't support anything: */
703                                 reg_val |= 0;
704                                 break;
705                         case AC97_VENDOR_ID1:
706                                 reg_val = azf_emulated_ac97_vendor_id >> 16;
707                                 break;
708                         case AC97_VENDOR_ID2:
709                                 reg_val = azf_emulated_ac97_vendor_id & 0xffff;
710                                 break;
711                         default:
712                                 unsupported = true;
713                                 break;
714                         }
715                 }
716         }
717         if (unsupported)
718                 snd_azf3328_mixer_ac97_map_unsupported(chip, reg_ac97, "read");
719 
720         return reg_val;
721 }
722 
723 static void
724 snd_azf3328_mixer_ac97_write(struct snd_ac97 *ac97,
725                      unsigned short reg_ac97, unsigned short val)
726 {
727         const struct snd_azf3328 *chip = ac97->private_data;
728         unsigned short reg_azf = snd_azf3328_mixer_ac97_map_reg_idx(reg_ac97);
729         bool unsupported = false;
730 
731         dev_dbg(chip->card->dev,
732                 "snd_azf3328_mixer_ac97_write reg_ac97 %u val %u\n",
733                 reg_ac97, val);
734         if (reg_azf & AZF_AC97_REG_UNSUPPORTED)
735                 unsupported = true;
736         else {
737                 if (reg_azf & AZF_AC97_REG_REAL_IO_WRITE)
738                         snd_azf3328_mixer_outw(
739                                 chip,
740                                 reg_azf & AZF_REG_MASK,
741                                 val
742                         );
743                 else
744                 if (reg_azf & AZF_AC97_REG_EMU_IO_WRITE) {
745                         switch (reg_ac97) {
746                         case AC97_REC_GAIN_MIC:
747                         case AC97_POWERDOWN:
748                         case AC97_EXTENDED_STATUS:
749                                 /*
750                                  * Silently swallow these writes.
751                                  * Since for most registers our card doesn't
752                                  * actually support a comparable feature,
753                                  * this is exactly what we should do here.
754                                  * The AC97 layer's I/O caching probably
755                                  * automatically takes care of all the rest...
756                                  * (remembers written values etc.)
757                                  */
758                                 break;
759                         default:
760                                 unsupported = true;
761                                 break;
762                         }
763                 }
764         }
765         if (unsupported)
766                 snd_azf3328_mixer_ac97_map_unsupported(chip, reg_ac97, "write");
767 }
768 
769 static int
770 snd_azf3328_mixer_new(struct snd_azf3328 *chip)
771 {
772         struct snd_ac97_bus *bus;
773         struct snd_ac97_template ac97;
774         static struct snd_ac97_bus_ops ops = {
775                 .write = snd_azf3328_mixer_ac97_write,
776                 .read = snd_azf3328_mixer_ac97_read,
777         };
778         int rc;
779 
780         memset(&ac97, 0, sizeof(ac97));
781         ac97.scaps = AC97_SCAP_SKIP_MODEM
782                         | AC97_SCAP_AUDIO /* we support audio! */
783                         | AC97_SCAP_NO_SPDIF;
784         ac97.private_data = chip;
785         ac97.pci = chip->pci;
786 
787         /*
788          * ALSA's AC97 layer has terrible init crackling issues,
789          * unfortunately, and since it makes use of AC97_RESET,
790          * there's no use trying to mute Master Playback proactively.
791          */
792 
793         rc = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
794         if (!rc)
795                 rc = snd_ac97_mixer(bus, &ac97, &chip->ac97);
796                 /*
797                  * Make sure to complain loudly in case of AC97 init failure,
798                  * since failure may happen quite often,
799                  * due to this card being a very quirky AC97 "lookalike".
800                  */
801         if (rc)
802                 dev_err(chip->card->dev, "AC97 init failed, err %d!\n", rc);
803 
804         /* If we return an error here, then snd_card_free() should
805          * free up any ac97 codecs that got created, as well as the bus.
806          */
807         return rc;
808 }
809 #else /* AZF_USE_AC97_LAYER */
810 static void
811 snd_azf3328_mixer_write_volume_gradually(const struct snd_azf3328 *chip,
812                                          unsigned reg,
813                                          unsigned char dst_vol_left,
814                                          unsigned char dst_vol_right,
815                                          int chan_sel, int delay
816 )
817 {
818         unsigned long portbase = chip->mixer_io + reg;
819         unsigned char curr_vol_left = 0, curr_vol_right = 0;
820         int left_change = 0, right_change = 0;
821 
822         if (chan_sel & SET_CHAN_LEFT) {
823                 curr_vol_left  = inb(portbase + 1);
824 
825                 /* take care of muting flag contained in left channel */
826                 if (curr_vol_left & AZF_MUTE_BIT)
827                         dst_vol_left |= AZF_MUTE_BIT;
828                 else
829                         dst_vol_left &= ~AZF_MUTE_BIT;
830 
831                 left_change = (curr_vol_left > dst_vol_left) ? -1 : 1;
832         }
833 
834         if (chan_sel & SET_CHAN_RIGHT) {
835                 curr_vol_right = inb(portbase + 0);
836 
837                 right_change = (curr_vol_right > dst_vol_right) ? -1 : 1;
838         }
839 
840         do {
841                 if (left_change) {
842                         if (curr_vol_left != dst_vol_left) {
843                                 curr_vol_left += left_change;
844                                 outb(curr_vol_left, portbase + 1);
845                         } else
846                             left_change = 0;
847                 }
848                 if (right_change) {
849                         if (curr_vol_right != dst_vol_right) {
850                                 curr_vol_right += right_change;
851 
852                         /* during volume change, the right channel is crackling
853                          * somewhat more than the left channel, unfortunately.
854                          * This seems to be a hardware issue. */
855                                 outb(curr_vol_right, portbase + 0);
856                         } else
857                             right_change = 0;
858                 }
859                 if (delay)
860                         mdelay(delay);
861         } while ((left_change) || (right_change));
862 }
863 
864 /*
865  * general mixer element
866  */
867 struct azf3328_mixer_reg {
868         unsigned reg;
869         unsigned int lchan_shift, rchan_shift;
870         unsigned int mask;
871         unsigned int invert: 1;
872         unsigned int stereo: 1;
873         unsigned int enum_c: 4;
874 };
875 
876 #define COMPOSE_MIXER_REG(reg,lchan_shift,rchan_shift,mask,invert,stereo,enum_c) \
877  ((reg) | (lchan_shift << 8) | (rchan_shift << 12) | \
878   (mask << 16) | \
879   (invert << 24) | \
880   (stereo << 25) | \
881   (enum_c << 26))
882 
883 static void snd_azf3328_mixer_reg_decode(struct azf3328_mixer_reg *r, unsigned long val)
884 {
885         r->reg = val & 0xff;
886         r->lchan_shift = (val >> 8) & 0x0f;
887         r->rchan_shift = (val >> 12) & 0x0f;
888         r->mask = (val >> 16) & 0xff;
889         r->invert = (val >> 24) & 1;
890         r->stereo = (val >> 25) & 1;
891         r->enum_c = (val >> 26) & 0x0f;
892 }
893 
894 /*
895  * mixer switches/volumes
896  */
897 
898 #define AZF3328_MIXER_SWITCH(xname, reg, shift, invert) \
899 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
900   .info = snd_azf3328_info_mixer, \
901   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
902   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0x1, invert, 0, 0), \
903 }
904 
905 #define AZF3328_MIXER_VOL_STEREO(xname, reg, mask, invert) \
906 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
907   .info = snd_azf3328_info_mixer, \
908   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
909   .private_value = COMPOSE_MIXER_REG(reg, 8, 0, mask, invert, 1, 0), \
910 }
911 
912 #define AZF3328_MIXER_VOL_MONO(xname, reg, mask, is_right_chan) \
913 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
914   .info = snd_azf3328_info_mixer, \
915   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
916   .private_value = COMPOSE_MIXER_REG(reg, is_right_chan ? 0 : 8, 0, mask, 1, 0, 0), \
917 }
918 
919 #define AZF3328_MIXER_VOL_SPECIAL(xname, reg, mask, shift, invert) \
920 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
921   .info = snd_azf3328_info_mixer, \
922   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
923   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, mask, invert, 0, 0), \
924 }
925 
926 #define AZF3328_MIXER_ENUM(xname, reg, enum_c, shift) \
927 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
928   .info = snd_azf3328_info_mixer_enum, \
929   .get = snd_azf3328_get_mixer_enum, .put = snd_azf3328_put_mixer_enum, \
930   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0, 0, 0, enum_c), \
931 }
932 
933 static int
934 snd_azf3328_info_mixer(struct snd_kcontrol *kcontrol,
935                        struct snd_ctl_elem_info *uinfo)
936 {
937         struct azf3328_mixer_reg reg;
938 
939         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
940         uinfo->type = reg.mask == 1 ?
941                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
942         uinfo->count = reg.stereo + 1;
943         uinfo->value.integer.min = 0;
944         uinfo->value.integer.max = reg.mask;
945         return 0;
946 }
947 
948 static int
949 snd_azf3328_get_mixer(struct snd_kcontrol *kcontrol,
950                       struct snd_ctl_elem_value *ucontrol)
951 {
952         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
953         struct azf3328_mixer_reg reg;
954         u16 oreg, val;
955 
956         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
957 
958         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
959         val = (oreg >> reg.lchan_shift) & reg.mask;
960         if (reg.invert)
961                 val = reg.mask - val;
962         ucontrol->value.integer.value[0] = val;
963         if (reg.stereo) {
964                 val = (oreg >> reg.rchan_shift) & reg.mask;
965                 if (reg.invert)
966                         val = reg.mask - val;
967                 ucontrol->value.integer.value[1] = val;
968         }
969         dev_dbg(chip->card->dev,
970                 "get: %02x is %04x -> vol %02lx|%02lx (shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
971                 reg.reg, oreg,
972                 ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
973                 reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
974         return 0;
975 }
976 
977 static int
978 snd_azf3328_put_mixer(struct snd_kcontrol *kcontrol,
979                       struct snd_ctl_elem_value *ucontrol)
980 {
981         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
982         struct azf3328_mixer_reg reg;
983         u16 oreg, nreg, val;
984 
985         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
986         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
987         val = ucontrol->value.integer.value[0] & reg.mask;
988         if (reg.invert)
989                 val = reg.mask - val;
990         nreg = oreg & ~(reg.mask << reg.lchan_shift);
991         nreg |= (val << reg.lchan_shift);
992         if (reg.stereo) {
993                 val = ucontrol->value.integer.value[1] & reg.mask;
994                 if (reg.invert)
995                         val = reg.mask - val;
996                 nreg &= ~(reg.mask << reg.rchan_shift);
997                 nreg |= (val << reg.rchan_shift);
998         }
999         if (reg.mask >= 0x07) /* it's a volume control, so better take care */
1000                 snd_azf3328_mixer_write_volume_gradually(
1001                         chip, reg.reg, nreg >> 8, nreg & 0xff,
1002                         /* just set both channels, doesn't matter */
1003                         SET_CHAN_LEFT|SET_CHAN_RIGHT,
1004                         0);
1005         else
1006                 snd_azf3328_mixer_outw(chip, reg.reg, nreg);
1007 
1008         dev_dbg(chip->card->dev,
1009                 "put: %02x to %02lx|%02lx, oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
1010                 reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
1011                 oreg, reg.lchan_shift, reg.rchan_shift,
1012                 nreg, snd_azf3328_mixer_inw(chip, reg.reg));
1013         return (nreg != oreg);
1014 }
1015 
1016 static int
1017 snd_azf3328_info_mixer_enum(struct snd_kcontrol *kcontrol,
1018                             struct snd_ctl_elem_info *uinfo)
1019 {
1020         static const char * const texts1[] = {
1021                 "Mic1", "Mic2"
1022         };
1023         static const char * const texts2[] = {
1024                 "Mix", "Mic"
1025         };
1026         static const char * const texts3[] = {
1027                 "Mic", "CD", "Video", "Aux",
1028                 "Line", "Mix", "Mix Mono", "Phone"
1029         };
1030         static const char * const texts4[] = {
1031                 "pre 3D", "post 3D"
1032         };
1033         struct azf3328_mixer_reg reg;
1034         const char * const *p = NULL;
1035 
1036         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
1037         if (reg.reg == IDX_MIXER_ADVCTL2) {
1038                 switch(reg.lchan_shift) {
1039                 case 8: /* modem out sel */
1040                         p = texts1;
1041                         break;
1042                 case 9: /* mono sel source */
1043                         p = texts2;
1044                         break;
1045                 case 15: /* PCM Out Path */
1046                         p = texts4;
1047                         break;
1048                 }
1049         } else if (reg.reg == IDX_MIXER_REC_SELECT)
1050                 p = texts3;
1051 
1052         return snd_ctl_enum_info(uinfo,
1053                                  (reg.reg == IDX_MIXER_REC_SELECT) ? 2 : 1,
1054                                  reg.enum_c, p);
1055 }
1056 
1057 static int
1058 snd_azf3328_get_mixer_enum(struct snd_kcontrol *kcontrol,
1059                            struct snd_ctl_elem_value *ucontrol)
1060 {
1061         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
1062         struct azf3328_mixer_reg reg;
1063         unsigned short val;
1064 
1065         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
1066         val = snd_azf3328_mixer_inw(chip, reg.reg);
1067         if (reg.reg == IDX_MIXER_REC_SELECT) {
1068                 ucontrol->value.enumerated.item[0] = (val >> 8) & (reg.enum_c - 1);
1069                 ucontrol->value.enumerated.item[1] = (val >> 0) & (reg.enum_c - 1);
1070         } else
1071                 ucontrol->value.enumerated.item[0] = (val >> reg.lchan_shift) & (reg.enum_c - 1);
1072 
1073         dev_dbg(chip->card->dev,
1074                 "get_enum: %02x is %04x -> %d|%d (shift %02d, enum_c %d)\n",
1075                 reg.reg, val, ucontrol->value.enumerated.item[0], ucontrol->value.enumerated.item[1],
1076                 reg.lchan_shift, reg.enum_c);
1077         return 0;
1078 }
1079 
1080 static int
1081 snd_azf3328_put_mixer_enum(struct snd_kcontrol *kcontrol,
1082                            struct snd_ctl_elem_value *ucontrol)
1083 {
1084         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
1085         struct azf3328_mixer_reg reg;
1086         u16 oreg, nreg, val;
1087 
1088         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
1089         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
1090         val = oreg;
1091         if (reg.reg == IDX_MIXER_REC_SELECT) {
1092                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U ||
1093                 ucontrol->value.enumerated.item[1] > reg.enum_c - 1U)
1094                         return -EINVAL;
1095                 val = (ucontrol->value.enumerated.item[0] << 8) |
1096                       (ucontrol->value.enumerated.item[1] << 0);
1097         } else {
1098                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U)
1099                         return -EINVAL;
1100                 val &= ~((reg.enum_c - 1) << reg.lchan_shift);
1101                 val |= (ucontrol->value.enumerated.item[0] << reg.lchan_shift);
1102         }
1103         snd_azf3328_mixer_outw(chip, reg.reg, val);
1104         nreg = val;
1105 
1106         dev_dbg(chip->card->dev,
1107                 "put_enum: %02x to %04x, oreg %04x\n", reg.reg, val, oreg);
1108         return (nreg != oreg);
1109 }
1110 
1111 static struct snd_kcontrol_new snd_azf3328_mixer_controls[] = {
1112         AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
1113         AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
1114         AZF3328_MIXER_SWITCH("PCM Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),
1115         AZF3328_MIXER_VOL_STEREO("PCM Playback Volume",
1116                                         IDX_MIXER_WAVEOUT, 0x1f, 1),
1117         AZF3328_MIXER_SWITCH("PCM 3D Bypass Playback Switch",
1118                                         IDX_MIXER_ADVCTL2, 7, 1),
1119         AZF3328_MIXER_SWITCH("FM Playback Switch", IDX_MIXER_FMSYNTH, 15, 1),
1120         AZF3328_MIXER_VOL_STEREO("FM Playback Volume", IDX_MIXER_FMSYNTH, 0x1f, 1),
1121         AZF3328_MIXER_SWITCH("CD Playback Switch", IDX_MIXER_CDAUDIO, 15, 1),
1122         AZF3328_MIXER_VOL_STEREO("CD Playback Volume", IDX_MIXER_CDAUDIO, 0x1f, 1),
1123         AZF3328_MIXER_SWITCH("Capture Switch", IDX_MIXER_REC_VOLUME, 15, 1),
1124         AZF3328_MIXER_VOL_STEREO("Capture Volume", IDX_MIXER_REC_VOLUME, 0x0f, 0),
1125         AZF3328_MIXER_ENUM("Capture Source", IDX_MIXER_REC_SELECT, 8, 0),
1126         AZF3328_MIXER_SWITCH("Mic Playback Switch", IDX_MIXER_MIC, 15, 1),
1127         AZF3328_MIXER_VOL_MONO("Mic Playback Volume", IDX_MIXER_MIC, 0x1f, 1),
1128         AZF3328_MIXER_SWITCH("Mic Boost (+20dB)", IDX_MIXER_MIC, 6, 0),
1129         AZF3328_MIXER_SWITCH("Line Playback Switch", IDX_MIXER_LINEIN, 15, 1),
1130         AZF3328_MIXER_VOL_STEREO("Line Playback Volume", IDX_MIXER_LINEIN, 0x1f, 1),
1131         AZF3328_MIXER_SWITCH("Beep Playback Switch", IDX_MIXER_PCBEEP, 15, 1),
1132         AZF3328_MIXER_VOL_SPECIAL("Beep Playback Volume", IDX_MIXER_PCBEEP, 0x0f, 1, 1),
1133         AZF3328_MIXER_SWITCH("Video Playback Switch", IDX_MIXER_VIDEO, 15, 1),
1134         AZF3328_MIXER_VOL_STEREO("Video Playback Volume", IDX_MIXER_VIDEO, 0x1f, 1),
1135         AZF3328_MIXER_SWITCH("Aux Playback Switch", IDX_MIXER_AUX, 15, 1),
1136         AZF3328_MIXER_VOL_STEREO("Aux Playback Volume", IDX_MIXER_AUX, 0x1f, 1),
1137         AZF3328_MIXER_SWITCH("Modem Playback Switch", IDX_MIXER_MODEMOUT, 15, 1),
1138         AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
1139         AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
1140         AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
1141         AZF3328_MIXER_ENUM("Mic Select", IDX_MIXER_ADVCTL2, 2, 8),
1142         AZF3328_MIXER_ENUM("Mono Output Select", IDX_MIXER_ADVCTL2, 2, 9),
1143         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! */
1144         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
1145         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
1146         AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
1147         AZF3328_MIXER_VOL_SPECIAL("3D Control - Width", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
1148         AZF3328_MIXER_VOL_SPECIAL("3D Control - Depth", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
1149 #if MIXER_TESTING
1150         AZF3328_MIXER_SWITCH("", IDX_MIXER_ADVCTL2, 0, 0),
1151         AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
1152         AZF3328_MIXER_SWITCH("2", IDX_MIXER_ADVCTL2, 2, 0),
1153         AZF3328_MIXER_SWITCH("3", IDX_MIXER_ADVCTL2, 3, 0),
1154         AZF3328_MIXER_SWITCH("4", IDX_MIXER_ADVCTL2, 4, 0),
1155         AZF3328_MIXER_SWITCH("5", IDX_MIXER_ADVCTL2, 5, 0),
1156         AZF3328_MIXER_SWITCH("6", IDX_MIXER_ADVCTL2, 6, 0),
1157         AZF3328_MIXER_SWITCH("7", IDX_MIXER_ADVCTL2, 7, 0),
1158         AZF3328_MIXER_SWITCH("8", IDX_MIXER_ADVCTL2, 8, 0),
1159         AZF3328_MIXER_SWITCH("9", IDX_MIXER_ADVCTL2, 9, 0),
1160         AZF3328_MIXER_SWITCH("10", IDX_MIXER_ADVCTL2, 10, 0),
1161         AZF3328_MIXER_SWITCH("11", IDX_MIXER_ADVCTL2, 11, 0),
1162         AZF3328_MIXER_SWITCH("12", IDX_MIXER_ADVCTL2, 12, 0),
1163         AZF3328_MIXER_SWITCH("13", IDX_MIXER_ADVCTL2, 13, 0),
1164         AZF3328_MIXER_SWITCH("14", IDX_MIXER_ADVCTL2, 14, 0),
1165         AZF3328_MIXER_SWITCH("15", IDX_MIXER_ADVCTL2, 15, 0),
1166 #endif
1167 };
1168 
1169 static u16 snd_azf3328_init_values[][2] = {
1170         { IDX_MIXER_PLAY_MASTER,        MIXER_MUTE_MASK|0x1f1f },
1171         { IDX_MIXER_MODEMOUT,           MIXER_MUTE_MASK|0x1f1f },
1172         { IDX_MIXER_BASSTREBLE,         0x0000 },
1173         { IDX_MIXER_PCBEEP,             MIXER_MUTE_MASK|0x1f1f },
1174         { IDX_MIXER_MODEMIN,            MIXER_MUTE_MASK|0x1f1f },
1175         { IDX_MIXER_MIC,                MIXER_MUTE_MASK|0x001f },
1176         { IDX_MIXER_LINEIN,             MIXER_MUTE_MASK|0x1f1f },
1177         { IDX_MIXER_CDAUDIO,            MIXER_MUTE_MASK|0x1f1f },
1178         { IDX_MIXER_VIDEO,              MIXER_MUTE_MASK|0x1f1f },
1179         { IDX_MIXER_AUX,                MIXER_MUTE_MASK|0x1f1f },
1180         { IDX_MIXER_WAVEOUT,            MIXER_MUTE_MASK|0x1f1f },
1181         { IDX_MIXER_FMSYNTH,            MIXER_MUTE_MASK|0x1f1f },
1182         { IDX_MIXER_REC_VOLUME,         MIXER_MUTE_MASK|0x0707 },
1183 };
1184 
1185 static int
1186 snd_azf3328_mixer_new(struct snd_azf3328 *chip)
1187 {
1188         struct snd_card *card;
1189         const struct snd_kcontrol_new *sw;
1190         unsigned int idx;
1191         int err;
1192 
1193         if (snd_BUG_ON(!chip || !chip->card))
1194                 return -EINVAL;
1195 
1196         card = chip->card;
1197 
1198         /* mixer reset */
1199         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
1200 
1201         /* mute and zero volume channels */
1202         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_init_values); ++idx) {
1203                 snd_azf3328_mixer_outw(chip,
1204                         snd_azf3328_init_values[idx][0],
1205                         snd_azf3328_init_values[idx][1]);
1206         }
1207 
1208         /* add mixer controls */
1209         sw = snd_azf3328_mixer_controls;
1210         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_mixer_controls);
1211                         ++idx, ++sw) {
1212                 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(sw, chip))) < 0)
1213                         return err;
1214         }
1215         snd_component_add(card, "AZF3328 mixer");
1216         strcpy(card->mixername, "AZF3328 mixer");
1217 
1218         return 0;
1219 }
1220 #endif /* AZF_USE_AC97_LAYER */
1221 
1222 static int
1223 snd_azf3328_hw_params(struct snd_pcm_substream *substream,
1224                                  struct snd_pcm_hw_params *hw_params)
1225 {
1226         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
1227 }
1228 
1229 static int
1230 snd_azf3328_hw_free(struct snd_pcm_substream *substream)
1231 {
1232         snd_pcm_lib_free_pages(substream);
1233         return 0;
1234 }
1235 
1236 static void
1237 snd_azf3328_codec_setfmt(struct snd_azf3328_codec_data *codec,
1238                                enum azf_freq_t bitrate,
1239                                unsigned int format_width,
1240                                unsigned int channels
1241 )
1242 {
1243         unsigned long flags;
1244         u16 val = 0xff00;
1245         u8 freq = 0;
1246 
1247         switch (bitrate) {
1248         case AZF_FREQ_4000:  freq = SOUNDFORMAT_FREQ_SUSPECTED_4000; break;
1249         case AZF_FREQ_4800:  freq = SOUNDFORMAT_FREQ_SUSPECTED_4800; break;
1250         case AZF_FREQ_5512:
1251                 /* the AZF3328 names it "5510" for some strange reason */
1252                              freq = SOUNDFORMAT_FREQ_5510; break;
1253         case AZF_FREQ_6620:  freq = SOUNDFORMAT_FREQ_6620; break;
1254         case AZF_FREQ_8000:  freq = SOUNDFORMAT_FREQ_8000; break;
1255         case AZF_FREQ_9600:  freq = SOUNDFORMAT_FREQ_9600; break;
1256         case AZF_FREQ_11025: freq = SOUNDFORMAT_FREQ_11025; break;
1257         case AZF_FREQ_13240: freq = SOUNDFORMAT_FREQ_SUSPECTED_13240; break;
1258         case AZF_FREQ_16000: freq = SOUNDFORMAT_FREQ_16000; break;
1259         case AZF_FREQ_22050: freq = SOUNDFORMAT_FREQ_22050; break;
1260         case AZF_FREQ_32000: freq = SOUNDFORMAT_FREQ_32000; break;
1261         default:
1262                 snd_printk(KERN_WARNING "unknown bitrate %d, assuming 44.1kHz!\n", bitrate);
1263                 /* fall-through */
1264         case AZF_FREQ_44100: freq = SOUNDFORMAT_FREQ_44100; break;
1265         case AZF_FREQ_48000: freq = SOUNDFORMAT_FREQ_48000; break;
1266         case AZF_FREQ_66200: freq = SOUNDFORMAT_FREQ_SUSPECTED_66200; break;
1267         }
1268         /* val = 0xff07; 3m27.993s (65301Hz; -> 64000Hz???) hmm, 66120, 65967, 66123 */
1269         /* val = 0xff09; 17m15.098s (13123,478Hz; -> 12000Hz???) hmm, 13237.2Hz? */
1270         /* val = 0xff0a; 47m30.599s (4764,891Hz; -> 4800Hz???) yup, 4803Hz */
1271         /* val = 0xff0c; 57m0.510s (4010,263Hz; -> 4000Hz???) yup, 4003Hz */
1272         /* val = 0xff05; 5m11.556s (... -> 44100Hz) */
1273         /* val = 0xff03; 10m21.529s (21872,463Hz; -> 22050Hz???) */
1274         /* val = 0xff0f; 20m41.883s (10937,993Hz; -> 11025Hz???) */
1275         /* val = 0xff0d; 41m23.135s (5523,600Hz; -> 5512Hz???) */
1276         /* val = 0xff0e; 28m30.777s (8017Hz; -> 8000Hz???) */
1277 
1278         val |= freq;
1279 
1280         if (channels == 2)
1281                 val |= SOUNDFORMAT_FLAG_2CHANNELS;
1282 
1283         if (format_width == 16)
1284                 val |= SOUNDFORMAT_FLAG_16BIT;
1285 
1286         spin_lock_irqsave(codec->lock, flags);
1287 
1288         /* set bitrate/format */
1289         snd_azf3328_codec_outw(codec, IDX_IO_CODEC_SOUNDFORMAT, val);
1290 
1291         /* changing the bitrate/format settings switches off the
1292          * audio output with an annoying click in case of 8/16bit format change
1293          * (maybe shutting down DAC/ADC?), thus immediately
1294          * do some tweaking to reenable it and get rid of the clicking
1295          * (FIXME: yes, it works, but what exactly am I doing here?? :)
1296          * FIXME: does this have some side effects for full-duplex
1297          * or other dramatic side effects? */
1298         /* do it for non-capture codecs only */
1299         if (codec->type != AZF_CODEC_CAPTURE)
1300                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1301                         snd_azf3328_codec_inw(codec, IDX_IO_CODEC_DMA_FLAGS) |
1302                         DMA_RUN_SOMETHING1 |
1303                         DMA_RUN_SOMETHING2 |
1304                         SOMETHING_ALMOST_ALWAYS_SET |
1305                         DMA_EPILOGUE_SOMETHING |
1306                         DMA_SOMETHING_ELSE
1307                 );
1308 
1309         spin_unlock_irqrestore(codec->lock, flags);
1310 }
1311 
1312 static inline void
1313 snd_azf3328_codec_setfmt_lowpower(struct snd_azf3328_codec_data *codec
1314 )
1315 {
1316         /* choose lowest frequency for low power consumption.
1317          * While this will cause louder noise due to rather coarse frequency,
1318          * it should never matter since output should always
1319          * get disabled properly when idle anyway. */
1320         snd_azf3328_codec_setfmt(codec, AZF_FREQ_4000, 8, 1);
1321 }
1322 
1323 static void
1324 snd_azf3328_ctrl_reg_6AH_update(struct snd_azf3328 *chip,
1325                                         unsigned bitmask,
1326                                         bool enable
1327 )
1328 {
1329         bool do_mask = !enable;
1330         if (do_mask)
1331                 chip->shadow_reg_ctrl_6AH |= bitmask;
1332         else
1333                 chip->shadow_reg_ctrl_6AH &= ~bitmask;
1334         dev_dbg(chip->card->dev,
1335                 "6AH_update mask 0x%04x do_mask %d: val 0x%04x\n",
1336                 bitmask, do_mask, chip->shadow_reg_ctrl_6AH);
1337         snd_azf3328_ctrl_outw(chip, IDX_IO_6AH, chip->shadow_reg_ctrl_6AH);
1338 }
1339 
1340 static inline void
1341 snd_azf3328_ctrl_enable_codecs(struct snd_azf3328 *chip, bool enable)
1342 {
1343         dev_dbg(chip->card->dev, "codec_enable %d\n", enable);
1344         /* no idea what exactly is being done here, but I strongly assume it's
1345          * PM related */
1346         snd_azf3328_ctrl_reg_6AH_update(
1347                 chip, IO_6A_PAUSE_PLAYBACK_BIT8, enable
1348         );
1349 }
1350 
1351 static void
1352 snd_azf3328_ctrl_codec_activity(struct snd_azf3328 *chip,
1353                                 enum snd_azf3328_codec_type codec_type,
1354                                 bool enable
1355 )
1356 {
1357         struct snd_azf3328_codec_data *codec = &chip->codecs[codec_type];
1358         bool need_change = (codec->running != enable);
1359 
1360         dev_dbg(chip->card->dev,
1361                 "codec_activity: %s codec, enable %d, need_change %d\n",
1362                                 codec->name, enable, need_change
1363         );
1364         if (need_change) {
1365                 static const struct {
1366                         enum snd_azf3328_codec_type other1;
1367                         enum snd_azf3328_codec_type other2;
1368                 } peer_codecs[3] =
1369                         { { AZF_CODEC_CAPTURE, AZF_CODEC_I2S_OUT },
1370                           { AZF_CODEC_PLAYBACK, AZF_CODEC_I2S_OUT },
1371                           { AZF_CODEC_PLAYBACK, AZF_CODEC_CAPTURE } };
1372                 bool call_function;
1373 
1374                 if (enable)
1375                         /* if enable codec, call enable_codecs func
1376                            to enable codec supply... */
1377                         call_function = 1;
1378                 else {
1379                         /* ...otherwise call enable_codecs func
1380                            (which globally shuts down operation of codecs)
1381                            only in case the other codecs are currently
1382                            not active either! */
1383                         call_function =
1384                                 ((!chip->codecs[peer_codecs[codec_type].other1]
1385                                         .running)
1386                              &&  (!chip->codecs[peer_codecs[codec_type].other2]
1387                                         .running));
1388                 }
1389                 if (call_function)
1390                         snd_azf3328_ctrl_enable_codecs(chip, enable);
1391 
1392                 /* ...and adjust clock, too
1393                  * (reduce noise and power consumption) */
1394                 if (!enable)
1395                         snd_azf3328_codec_setfmt_lowpower(codec);
1396                 codec->running = enable;
1397         }
1398 }
1399 
1400 static void
1401 snd_azf3328_codec_setdmaa(struct snd_azf3328 *chip,
1402                           struct snd_azf3328_codec_data *codec,
1403                           unsigned long addr,
1404                           unsigned int period_bytes,
1405                           unsigned int buffer_bytes
1406 )
1407 {
1408         WARN_ONCE(period_bytes & 1, "odd period length!?\n");
1409         WARN_ONCE(buffer_bytes != 2 * period_bytes,
1410                  "missed our input expectations! %u vs. %u\n",
1411                  buffer_bytes, period_bytes);
1412         if (!codec->running) {
1413                 /* AZF3328 uses a two buffer pointer DMA transfer approach */
1414 
1415                 unsigned long flags;
1416 
1417                 /* width 32bit (prevent overflow): */
1418                 u32 area_length;
1419                 struct codec_setup_io {
1420                         u32 dma_start_1;
1421                         u32 dma_start_2;
1422                         u32 dma_lengths;
1423                 } __attribute__((packed)) setup_io;
1424 
1425                 area_length = buffer_bytes/2;
1426 
1427                 setup_io.dma_start_1 = addr;
1428                 setup_io.dma_start_2 = addr+area_length;
1429 
1430                 dev_dbg(chip->card->dev,
1431                         "setdma: buffers %08x[%u] / %08x[%u], %u, %u\n",
1432                                 setup_io.dma_start_1, area_length,
1433                                 setup_io.dma_start_2, area_length,
1434                                 period_bytes, buffer_bytes);
1435 
1436                 /* Hmm, are we really supposed to decrement this by 1??
1437                    Most definitely certainly not: configuring full length does
1438                    work properly (i.e. likely better), and BTW we
1439                    violated possibly differing frame sizes with this...
1440 
1441                 area_length--; |* max. index *|
1442                 */
1443 
1444                 /* build combined I/O buffer length word */
1445                 setup_io.dma_lengths = (area_length << 16) | (area_length);
1446 
1447                 spin_lock_irqsave(codec->lock, flags);
1448                 snd_azf3328_codec_outl_multi(
1449                         codec, IDX_IO_CODEC_DMA_START_1, &setup_io, 3
1450                 );
1451                 spin_unlock_irqrestore(codec->lock, flags);
1452         }
1453 }
1454 
1455 static int
1456 snd_azf3328_pcm_prepare(struct snd_pcm_substream *substream)
1457 {
1458         struct snd_pcm_runtime *runtime = substream->runtime;
1459         struct snd_azf3328_codec_data *codec = runtime->private_data;
1460 #if 0
1461         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
1462         unsigned int count = snd_pcm_lib_period_bytes(substream);
1463 #endif
1464 
1465         codec->dma_base = runtime->dma_addr;
1466 
1467 #if 0
1468         snd_azf3328_codec_setfmt(codec,
1469                 runtime->rate,
1470                 snd_pcm_format_width(runtime->format),
1471                 runtime->channels);
1472         snd_azf3328_codec_setdmaa(chip, codec,
1473                                         runtime->dma_addr, count, size);
1474 #endif
1475         return 0;
1476 }
1477 
1478 static int
1479 snd_azf3328_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1480 {
1481         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1482         struct snd_pcm_runtime *runtime = substream->runtime;
1483         struct snd_azf3328_codec_data *codec = runtime->private_data;
1484         int result = 0;
1485         u16 flags1;
1486         bool previously_muted = false;
1487         bool is_main_mixer_playback_codec = (AZF_CODEC_PLAYBACK == codec->type);
1488 
1489         switch (cmd) {
1490         case SNDRV_PCM_TRIGGER_START:
1491                 dev_dbg(chip->card->dev, "START PCM %s\n", codec->name);
1492 
1493                 if (is_main_mixer_playback_codec) {
1494                         /* mute WaveOut (avoid clicking during setup) */
1495                         previously_muted =
1496                                 snd_azf3328_mixer_mute_control_pcm(
1497                                                 chip, 1
1498                                 );
1499                 }
1500 
1501                 snd_azf3328_codec_setfmt(codec,
1502                         runtime->rate,
1503                         snd_pcm_format_width(runtime->format),
1504                         runtime->channels);
1505 
1506                 spin_lock(codec->lock);
1507                 /* first, remember current value: */
1508                 flags1 = snd_azf3328_codec_inw(codec, IDX_IO_CODEC_DMA_FLAGS);
1509 
1510                 /* stop transfer */
1511                 flags1 &= ~DMA_RESUME;
1512                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1513 
1514                 /* FIXME: clear interrupts or what??? */
1515                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_IRQTYPE, 0xffff);
1516                 spin_unlock(codec->lock);
1517 
1518                 snd_azf3328_codec_setdmaa(chip, codec, runtime->dma_addr,
1519                         snd_pcm_lib_period_bytes(substream),
1520                         snd_pcm_lib_buffer_bytes(substream)
1521                 );
1522 
1523                 spin_lock(codec->lock);
1524 #ifdef WIN9X
1525                 /* FIXME: enable playback/recording??? */
1526                 flags1 |= DMA_RUN_SOMETHING1 | DMA_RUN_SOMETHING2;
1527                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1528 
1529                 /* start transfer again */
1530                 /* FIXME: what is this value (0x0010)??? */
1531                 flags1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
1532                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1533 #else /* NT4 */
1534                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1535                         0x0000);
1536                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1537                         DMA_RUN_SOMETHING1);
1538                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1539                         DMA_RUN_SOMETHING1 |
1540                         DMA_RUN_SOMETHING2);
1541                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1542                         DMA_RESUME |
1543                         SOMETHING_ALMOST_ALWAYS_SET |
1544                         DMA_EPILOGUE_SOMETHING |
1545                         DMA_SOMETHING_ELSE);
1546 #endif
1547                 spin_unlock(codec->lock);
1548                 snd_azf3328_ctrl_codec_activity(chip, codec->type, 1);
1549 
1550                 if (is_main_mixer_playback_codec) {
1551                         /* now unmute WaveOut */
1552                         if (!previously_muted)
1553                                 snd_azf3328_mixer_mute_control_pcm(
1554                                                 chip, 0
1555                                 );
1556                 }
1557 
1558                 dev_dbg(chip->card->dev, "PCM STARTED %s\n", codec->name);
1559                 break;
1560         case SNDRV_PCM_TRIGGER_RESUME:
1561                 dev_dbg(chip->card->dev, "PCM RESUME %s\n", codec->name);
1562                 /* resume codec if we were active */
1563                 spin_lock(codec->lock);
1564                 if (codec->running)
1565                         snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1566                                 snd_azf3328_codec_inw(
1567                                         codec, IDX_IO_CODEC_DMA_FLAGS
1568                                 ) | DMA_RESUME
1569                         );
1570                 spin_unlock(codec->lock);
1571                 break;
1572         case SNDRV_PCM_TRIGGER_STOP:
1573                 dev_dbg(chip->card->dev, "PCM STOP %s\n", codec->name);
1574 
1575                 if (is_main_mixer_playback_codec) {
1576                         /* mute WaveOut (avoid clicking during setup) */
1577                         previously_muted =
1578                                 snd_azf3328_mixer_mute_control_pcm(
1579                                                 chip, 1
1580                                 );
1581                 }
1582 
1583                 spin_lock(codec->lock);
1584                 /* first, remember current value: */
1585                 flags1 = snd_azf3328_codec_inw(codec, IDX_IO_CODEC_DMA_FLAGS);
1586 
1587                 /* stop transfer */
1588                 flags1 &= ~DMA_RESUME;
1589                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1590 
1591                 /* hmm, is this really required? we're resetting the same bit
1592                  * immediately thereafter... */
1593                 flags1 |= DMA_RUN_SOMETHING1;
1594                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1595 
1596                 flags1 &= ~DMA_RUN_SOMETHING1;
1597                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1598                 spin_unlock(codec->lock);
1599                 snd_azf3328_ctrl_codec_activity(chip, codec->type, 0);
1600 
1601                 if (is_main_mixer_playback_codec) {
1602                         /* now unmute WaveOut */
1603                         if (!previously_muted)
1604                                 snd_azf3328_mixer_mute_control_pcm(
1605                                                 chip, 0
1606                                 );
1607                 }
1608 
1609                 dev_dbg(chip->card->dev, "PCM STOPPED %s\n", codec->name);
1610                 break;
1611         case SNDRV_PCM_TRIGGER_SUSPEND:
1612                 dev_dbg(chip->card->dev, "PCM SUSPEND %s\n", codec->name);
1613                 /* make sure codec is stopped */
1614                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1615                         snd_azf3328_codec_inw(
1616                                 codec, IDX_IO_CODEC_DMA_FLAGS
1617                         ) & ~DMA_RESUME
1618                 );
1619                 break;
1620         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1621                 WARN(1, "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1622                 break;
1623         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1624                 WARN(1, "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1625                 break;
1626         default:
1627                 WARN(1, "FIXME: unknown trigger mode!\n");
1628                 return -EINVAL;
1629         }
1630 
1631         return result;
1632 }
1633 
1634 static snd_pcm_uframes_t
1635 snd_azf3328_pcm_pointer(struct snd_pcm_substream *substream
1636 )
1637 {
1638         const struct snd_azf3328_codec_data *codec =
1639                 substream->runtime->private_data;
1640         unsigned long result;
1641         snd_pcm_uframes_t frmres;
1642 
1643         result = snd_azf3328_codec_inl(codec, IDX_IO_CODEC_DMA_CURRPOS);
1644 
1645         /* calculate offset */
1646 #ifdef QUERY_HARDWARE
1647         result -= snd_azf3328_codec_inl(codec, IDX_IO_CODEC_DMA_START_1);
1648 #else
1649         result -= codec->dma_base;
1650 #endif
1651         frmres = bytes_to_frames( substream->runtime, result);
1652         dev_dbg(substream->pcm->card->dev, "%08li %s @ 0x%8lx, frames %8ld\n",
1653                 jiffies, codec->name, result, frmres);
1654         return frmres;
1655 }
1656 
1657 /******************************************************************/
1658 
1659 #ifdef SUPPORT_GAMEPORT
1660 static inline void
1661 snd_azf3328_gameport_irq_enable(struct snd_azf3328 *chip,
1662                                 bool enable
1663 )
1664 {
1665         snd_azf3328_io_reg_setb(
1666                 chip->game_io+IDX_GAME_HWCONFIG,
1667                 GAME_HWCFG_IRQ_ENABLE,
1668                 enable
1669         );
1670 }
1671 
1672 static inline void
1673 snd_azf3328_gameport_legacy_address_enable(struct snd_azf3328 *chip,
1674                                            bool enable
1675 )
1676 {
1677         snd_azf3328_io_reg_setb(
1678                 chip->game_io+IDX_GAME_HWCONFIG,
1679                 GAME_HWCFG_LEGACY_ADDRESS_ENABLE,
1680                 enable
1681         );
1682 }
1683 
1684 static void
1685 snd_azf3328_gameport_set_counter_frequency(struct snd_azf3328 *chip,
1686                                            unsigned int freq_cfg
1687 )
1688 {
1689         snd_azf3328_io_reg_setb(
1690                 chip->game_io+IDX_GAME_HWCONFIG,
1691                 0x02,
1692                 (freq_cfg & 1) != 0
1693         );
1694         snd_azf3328_io_reg_setb(
1695                 chip->game_io+IDX_GAME_HWCONFIG,
1696                 0x04,
1697                 (freq_cfg & 2) != 0
1698         );
1699 }
1700 
1701 static inline void
1702 snd_azf3328_gameport_axis_circuit_enable(struct snd_azf3328 *chip, bool enable)
1703 {
1704         snd_azf3328_ctrl_reg_6AH_update(
1705                 chip, IO_6A_SOMETHING2_GAMEPORT, enable
1706         );
1707 }
1708 
1709 static inline void
1710 snd_azf3328_gameport_interrupt(struct snd_azf3328 *chip)
1711 {
1712         /*
1713          * skeleton handler only
1714          * (we do not want axis reading in interrupt handler - too much load!)
1715          */
1716         dev_dbg(chip->card->dev, "gameport irq\n");
1717 
1718          /* this should ACK the gameport IRQ properly, hopefully. */
1719         snd_azf3328_game_inw(chip, IDX_GAME_AXIS_VALUE);
1720 }
1721 
1722 static int
1723 snd_azf3328_gameport_open(struct gameport *gameport, int mode)
1724 {
1725         struct snd_azf3328 *chip = gameport_get_port_data(gameport);
1726         int res;
1727 
1728         dev_dbg(chip->card->dev, "gameport_open, mode %d\n", mode);
1729         switch (mode) {
1730         case GAMEPORT_MODE_COOKED:
1731         case GAMEPORT_MODE_RAW:
1732                 res = 0;
1733                 break;
1734         default:
1735                 res = -1;
1736                 break;
1737         }
1738 
1739         snd_azf3328_gameport_set_counter_frequency(chip,
1740                                 GAME_HWCFG_ADC_COUNTER_FREQ_STD);
1741         snd_azf3328_gameport_axis_circuit_enable(chip, (res == 0));
1742 
1743         return res;
1744 }
1745 
1746 static void
1747 snd_azf3328_gameport_close(struct gameport *gameport)
1748 {
1749         struct snd_azf3328 *chip = gameport_get_port_data(gameport);
1750 
1751         dev_dbg(chip->card->dev, "gameport_close\n");
1752         snd_azf3328_gameport_set_counter_frequency(chip,
1753                                 GAME_HWCFG_ADC_COUNTER_FREQ_1_200);
1754         snd_azf3328_gameport_axis_circuit_enable(chip, 0);
1755 }
1756 
1757 static int
1758 snd_azf3328_gameport_cooked_read(struct gameport *gameport,
1759                                  int *axes,
1760                                  int *buttons
1761 )
1762 {
1763         struct snd_azf3328 *chip = gameport_get_port_data(gameport);
1764         int i;
1765         u8 val;
1766         unsigned long flags;
1767 
1768         if (snd_BUG_ON(!chip))
1769                 return 0;
1770 
1771         spin_lock_irqsave(&chip->reg_lock, flags);
1772         val = snd_azf3328_game_inb(chip, IDX_GAME_LEGACY_COMPATIBLE);
1773         *buttons = (~(val) >> 4) & 0xf;
1774 
1775         /* ok, this one is a bit dirty: cooked_read is being polled by a timer,
1776          * thus we're atomic and cannot actively wait in here
1777          * (which would be useful for us since it probably would be better
1778          * to trigger a measurement in here, then wait a short amount of
1779          * time until it's finished, then read values of _this_ measurement).
1780          *
1781          * Thus we simply resort to reading values if they're available already
1782          * and trigger the next measurement.
1783          */
1784 
1785         val = snd_azf3328_game_inb(chip, IDX_GAME_AXES_CONFIG);
1786         if (val & GAME_AXES_SAMPLING_READY) {
1787                 for (i = 0; i < ARRAY_SIZE(chip->axes); ++i) {
1788                         /* configure the axis to read */
1789                         val = (i << 4) | 0x0f;
1790                         snd_azf3328_game_outb(chip, IDX_GAME_AXES_CONFIG, val);
1791 
1792                         chip->axes[i] = snd_azf3328_game_inw(
1793                                                 chip, IDX_GAME_AXIS_VALUE
1794                                         );
1795                 }
1796         }
1797 
1798         /* trigger next sampling of axes, to be evaluated the next time we
1799          * enter this function */
1800 
1801         /* for some very, very strange reason we cannot enable
1802          * Measurement Ready monitoring for all axes here,
1803          * at least not when only one joystick connected */
1804         val = 0x03; /* we're able to monitor axes 1 and 2 only */
1805         snd_azf3328_game_outb(chip, IDX_GAME_AXES_CONFIG, val);
1806 
1807         snd_azf3328_game_outw(chip, IDX_GAME_AXIS_VALUE, 0xffff);
1808         spin_unlock_irqrestore(&chip->reg_lock, flags);
1809 
1810         for (i = 0; i < ARRAY_SIZE(chip->axes); i++) {
1811                 axes[i] = chip->axes[i];
1812                 if (axes[i] == 0xffff)
1813                         axes[i] = -1;
1814         }
1815 
1816         dev_dbg(chip->card->dev, "cooked_read: axes %d %d %d %d buttons %d\n",
1817                 axes[0], axes[1], axes[2], axes[3], *buttons);
1818 
1819         return 0;
1820 }
1821 
1822 static int
1823 snd_azf3328_gameport(struct snd_azf3328 *chip, int dev)
1824 {
1825         struct gameport *gp;
1826 
1827         chip->gameport = gp = gameport_allocate_port();
1828         if (!gp) {
1829                 dev_err(chip->card->dev, "cannot alloc memory for gameport\n");
1830                 return -ENOMEM;
1831         }
1832 
1833         gameport_set_name(gp, "AZF3328 Gameport");
1834         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1835         gameport_set_dev_parent(gp, &chip->pci->dev);
1836         gp->io = chip->game_io;
1837         gameport_set_port_data(gp, chip);
1838 
1839         gp->open = snd_azf3328_gameport_open;
1840         gp->close = snd_azf3328_gameport_close;
1841         gp->fuzz = 16; /* seems ok */
1842         gp->cooked_read = snd_azf3328_gameport_cooked_read;
1843 
1844         /* DISABLE legacy address: we don't need it! */
1845         snd_azf3328_gameport_legacy_address_enable(chip, 0);
1846 
1847         snd_azf3328_gameport_set_counter_frequency(chip,
1848                                 GAME_HWCFG_ADC_COUNTER_FREQ_1_200);
1849         snd_azf3328_gameport_axis_circuit_enable(chip, 0);
1850 
1851         gameport_register_port(chip->gameport);
1852 
1853         return 0;
1854 }
1855 
1856 static void
1857 snd_azf3328_gameport_free(struct snd_azf3328 *chip)
1858 {
1859         if (chip->gameport) {
1860                 gameport_unregister_port(chip->gameport);
1861                 chip->gameport = NULL;
1862         }
1863         snd_azf3328_gameport_irq_enable(chip, 0);
1864 }
1865 #else
1866 static inline int
1867 snd_azf3328_gameport(struct snd_azf3328 *chip, int dev) { return -ENOSYS; }
1868 static inline void
1869 snd_azf3328_gameport_free(struct snd_azf3328 *chip) { }
1870 static inline void
1871 snd_azf3328_gameport_interrupt(struct snd_azf3328 *chip)
1872 {
1873         dev_warn(chip->card->dev, "huh, game port IRQ occurred!?\n");
1874 }
1875 #endif /* SUPPORT_GAMEPORT */
1876 
1877 /******************************************************************/
1878 
1879 static inline void
1880 snd_azf3328_irq_log_unknown_type(struct snd_azf3328 *chip, u8 which)
1881 {
1882         dev_dbg(chip->card->dev,
1883                 "unknown IRQ type (%x) occurred, please report!\n",
1884                 which);
1885 }
1886 
1887 static inline void
1888 snd_azf3328_pcm_interrupt(struct snd_azf3328 *chip,
1889                           const struct snd_azf3328_codec_data *first_codec,
1890                           u8 status
1891 )
1892 {
1893         u8 which;
1894         enum snd_azf3328_codec_type codec_type;
1895         const struct snd_azf3328_codec_data *codec = first_codec;
1896 
1897         for (codec_type = AZF_CODEC_PLAYBACK;
1898                  codec_type <= AZF_CODEC_I2S_OUT;
1899                          ++codec_type, ++codec) {
1900 
1901                 /* skip codec if there's no interrupt for it */
1902                 if (!(status & (1 << codec_type)))
1903                         continue;
1904 
1905                 spin_lock(codec->lock);
1906                 which = snd_azf3328_codec_inb(codec, IDX_IO_CODEC_IRQTYPE);
1907                 /* ack all IRQ types immediately */
1908                 snd_azf3328_codec_outb(codec, IDX_IO_CODEC_IRQTYPE, which);
1909                 spin_unlock(codec->lock);
1910 
1911                 if (codec->substream) {
1912                         snd_pcm_period_elapsed(codec->substream);
1913                         dev_dbg(chip->card->dev, "%s period done (#%x), @ %x\n",
1914                                 codec->name,
1915                                 which,
1916                                 snd_azf3328_codec_inl(
1917                                         codec, IDX_IO_CODEC_DMA_CURRPOS));
1918                 } else
1919                         dev_warn(chip->card->dev, "irq handler problem!\n");
1920                 if (which & IRQ_SOMETHING)
1921                         snd_azf3328_irq_log_unknown_type(chip, which);
1922         }
1923 }
1924 
1925 static irqreturn_t
1926 snd_azf3328_interrupt(int irq, void *dev_id)
1927 {
1928         struct snd_azf3328 *chip = dev_id;
1929         u8 status;
1930         static unsigned long irq_count;
1931 
1932         status = snd_azf3328_ctrl_inb(chip, IDX_IO_IRQSTATUS);
1933 
1934         /* fast path out, to ease interrupt sharing */
1935         if (!(status &
1936                 (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_I2S_OUT
1937                 |IRQ_GAMEPORT|IRQ_MPU401|IRQ_TIMER)
1938         ))
1939                 return IRQ_NONE; /* must be interrupt for another device */
1940 
1941         dev_dbg(chip->card->dev,
1942                 "irq_count %ld! IDX_IO_IRQSTATUS %04x\n",
1943                         irq_count++ /* debug-only */,
1944                         status);
1945 
1946         if (status & IRQ_TIMER) {
1947                 /* dev_dbg(chip->card->dev, "timer %ld\n",
1948                         snd_azf3328_codec_inl(chip, IDX_IO_TIMER_VALUE)
1949                                 & TIMER_VALUE_MASK
1950                 ); */
1951                 if (chip->timer)
1952                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1953                 /* ACK timer */
1954                 spin_lock(&chip->reg_lock);
1955                 snd_azf3328_ctrl_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x07);
1956                 spin_unlock(&chip->reg_lock);
1957                 dev_dbg(chip->card->dev, "timer IRQ\n");
1958         }
1959 
1960         if (status & (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_I2S_OUT))
1961                 snd_azf3328_pcm_interrupt(chip, chip->codecs, status);
1962 
1963         if (status & IRQ_GAMEPORT)
1964                 snd_azf3328_gameport_interrupt(chip);
1965 
1966         /* MPU401 has less critical IRQ requirements
1967          * than timer and playback/recording, right? */
1968         if (status & IRQ_MPU401) {
1969                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1970 
1971                 /* hmm, do we have to ack the IRQ here somehow?
1972                  * If so, then I don't know how yet... */
1973                 dev_dbg(chip->card->dev, "MPU401 IRQ\n");
1974         }
1975         return IRQ_HANDLED;
1976 }
1977 
1978 /*****************************************************************/
1979 
1980 /* as long as we think we have identical snd_pcm_hardware parameters
1981    for playback, capture and i2s out, we can use the same physical struct
1982    since the struct is simply being copied into a member.
1983 */
1984 static const struct snd_pcm_hardware snd_azf3328_hardware =
1985 {
1986         /* FIXME!! Correct? */
1987         .info =                 SNDRV_PCM_INFO_MMAP |
1988                                 SNDRV_PCM_INFO_INTERLEAVED |
1989                                 SNDRV_PCM_INFO_MMAP_VALID,
1990         .formats =              SNDRV_PCM_FMTBIT_S8 |
1991                                 SNDRV_PCM_FMTBIT_U8 |
1992                                 SNDRV_PCM_FMTBIT_S16_LE |
1993                                 SNDRV_PCM_FMTBIT_U16_LE,
1994         .rates =                SNDRV_PCM_RATE_5512 |
1995                                 SNDRV_PCM_RATE_8000_48000 |
1996                                 SNDRV_PCM_RATE_KNOT,
1997         .rate_min =             AZF_FREQ_4000,
1998         .rate_max =             AZF_FREQ_66200,
1999         .channels_min =         1,
2000         .channels_max =         2,
2001         .buffer_bytes_max =     (64*1024),
2002         .period_bytes_min =     1024,
2003         .period_bytes_max =     (32*1024),
2004         /* We simply have two DMA areas (instead of a list of descriptors
2005            such as other cards); I believe that this is a fixed hardware
2006            attribute and there isn't much driver magic to be done to expand it.
2007            Thus indicate that we have at least and at most 2 periods. */
2008         .periods_min =          2,
2009         .periods_max =          2,
2010         /* FIXME: maybe that card actually has a FIFO?
2011          * Hmm, it seems newer revisions do have one, but we still don't know
2012          * its size... */
2013         .fifo_size =            0,
2014 };
2015 
2016 
2017 static unsigned int snd_azf3328_fixed_rates[] = {
2018         AZF_FREQ_4000,
2019         AZF_FREQ_4800,
2020         AZF_FREQ_5512,
2021         AZF_FREQ_6620,
2022         AZF_FREQ_8000,
2023         AZF_FREQ_9600,
2024         AZF_FREQ_11025,
2025         AZF_FREQ_13240,
2026         AZF_FREQ_16000,
2027         AZF_FREQ_22050,
2028         AZF_FREQ_32000,
2029         AZF_FREQ_44100,
2030         AZF_FREQ_48000,
2031         AZF_FREQ_66200
2032 };
2033 
2034 static struct snd_pcm_hw_constraint_list snd_azf3328_hw_constraints_rates = {
2035         .count = ARRAY_SIZE(snd_azf3328_fixed_rates),
2036         .list = snd_azf3328_fixed_rates,
2037         .mask = 0,
2038 };
2039 
2040 /*****************************************************************/
2041 
2042 static int
2043 snd_azf3328_pcm_open(struct snd_pcm_substream *substream,
2044                      enum snd_azf3328_codec_type codec_type
2045 )
2046 {
2047         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
2048         struct snd_pcm_runtime *runtime = substream->runtime;
2049         struct snd_azf3328_codec_data *codec = &chip->codecs[codec_type];
2050 
2051         codec->substream = substream;
2052 
2053         /* same parameters for all our codecs - at least we think so... */
2054         runtime->hw = snd_azf3328_hardware;
2055 
2056         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
2057                                    &snd_azf3328_hw_constraints_rates);
2058         runtime->private_data = codec;
2059         return 0;
2060 }
2061 
2062 static int
2063 snd_azf3328_pcm_playback_open(struct snd_pcm_substream *substream)
2064 {
2065         return snd_azf3328_pcm_open(substream, AZF_CODEC_PLAYBACK);
2066 }
2067 
2068 static int
2069 snd_azf3328_pcm_capture_open(struct snd_pcm_substream *substream)
2070 {
2071         return snd_azf3328_pcm_open(substream, AZF_CODEC_CAPTURE);
2072 }
2073 
2074 static int
2075 snd_azf3328_pcm_i2s_out_open(struct snd_pcm_substream *substream)
2076 {
2077         return snd_azf3328_pcm_open(substream, AZF_CODEC_I2S_OUT);
2078 }
2079 
2080 static int
2081 snd_azf3328_pcm_close(struct snd_pcm_substream *substream
2082 )
2083 {
2084         struct snd_azf3328_codec_data *codec =
2085                 substream->runtime->private_data;
2086 
2087         codec->substream = NULL;
2088         return 0;
2089 }
2090 
2091 /******************************************************************/
2092 
2093 static struct snd_pcm_ops snd_azf3328_playback_ops = {
2094         .open =         snd_azf3328_pcm_playback_open,
2095         .close =        snd_azf3328_pcm_close,
2096         .ioctl =        snd_pcm_lib_ioctl,
2097         .hw_params =    snd_azf3328_hw_params,
2098         .hw_free =      snd_azf3328_hw_free,
2099         .prepare =      snd_azf3328_pcm_prepare,
2100         .trigger =      snd_azf3328_pcm_trigger,
2101         .pointer =      snd_azf3328_pcm_pointer
2102 };
2103 
2104 static struct snd_pcm_ops snd_azf3328_capture_ops = {
2105         .open =         snd_azf3328_pcm_capture_open,
2106         .close =        snd_azf3328_pcm_close,
2107         .ioctl =        snd_pcm_lib_ioctl,
2108         .hw_params =    snd_azf3328_hw_params,
2109         .hw_free =      snd_azf3328_hw_free,
2110         .prepare =      snd_azf3328_pcm_prepare,
2111         .trigger =      snd_azf3328_pcm_trigger,
2112         .pointer =      snd_azf3328_pcm_pointer
2113 };
2114 
2115 static struct snd_pcm_ops snd_azf3328_i2s_out_ops = {
2116         .open =         snd_azf3328_pcm_i2s_out_open,
2117         .close =        snd_azf3328_pcm_close,
2118         .ioctl =        snd_pcm_lib_ioctl,
2119         .hw_params =    snd_azf3328_hw_params,
2120         .hw_free =      snd_azf3328_hw_free,
2121         .prepare =      snd_azf3328_pcm_prepare,
2122         .trigger =      snd_azf3328_pcm_trigger,
2123         .pointer =      snd_azf3328_pcm_pointer
2124 };
2125 
2126 static int
2127 snd_azf3328_pcm(struct snd_azf3328 *chip)
2128 {
2129         /* pcm devices */
2130         enum { AZF_PCMDEV_STD, AZF_PCMDEV_I2S_OUT, NUM_AZF_PCMDEVS };
2131 
2132         struct snd_pcm *pcm;
2133         int err;
2134 
2135         err = snd_pcm_new(chip->card, "AZF3328 DSP", AZF_PCMDEV_STD,
2136                                                                 1, 1, &pcm);
2137         if (err < 0)
2138                 return err;
2139         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
2140                                                 &snd_azf3328_playback_ops);
2141         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
2142                                                 &snd_azf3328_capture_ops);
2143 
2144         pcm->private_data = chip;
2145         pcm->info_flags = 0;
2146         strcpy(pcm->name, chip->card->shortname);
2147         /* same pcm object for playback/capture (see snd_pcm_new() above) */
2148         chip->pcm[AZF_CODEC_PLAYBACK] = pcm;
2149         chip->pcm[AZF_CODEC_CAPTURE] = pcm;
2150 
2151         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
2152                                                 snd_dma_pci_data(chip->pci),
2153                                                         64*1024, 64*1024);
2154 
2155         err = snd_pcm_new(chip->card, "AZF3328 I2S OUT", AZF_PCMDEV_I2S_OUT,
2156                                                                 1, 0, &pcm);
2157         if (err < 0)
2158                 return err;
2159         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
2160                                                 &snd_azf3328_i2s_out_ops);
2161 
2162         pcm->private_data = chip;
2163         pcm->info_flags = 0;
2164         strcpy(pcm->name, chip->card->shortname);
2165         chip->pcm[AZF_CODEC_I2S_OUT] = pcm;
2166 
2167         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
2168                                                 snd_dma_pci_data(chip->pci),
2169                                                         64*1024, 64*1024);
2170 
2171         return 0;
2172 }
2173 
2174 /******************************************************************/
2175 
2176 /*** NOTE: the physical timer resolution actually is 1024000 ticks per second
2177  *** (probably derived from main crystal via a divider of 24),
2178  *** but announcing those attributes to user-space would make programs
2179  *** configure the timer to a 1 tick value, resulting in an absolutely fatal
2180  *** timer IRQ storm.
2181  *** Thus I chose to announce a down-scaled virtual timer to the outside and
2182  *** calculate real timer countdown values internally.
2183  *** (the scale factor can be set via module parameter "seqtimer_scaling").
2184  ***/
2185 
2186 static int
2187 snd_azf3328_timer_start(struct snd_timer *timer)
2188 {
2189         struct snd_azf3328 *chip;
2190         unsigned long flags;
2191         unsigned int delay;
2192 
2193         chip = snd_timer_chip(timer);
2194         delay = ((timer->sticks * seqtimer_scaling) - 1) & TIMER_VALUE_MASK;
2195         if (delay < 49) {
2196                 /* uhoh, that's not good, since user-space won't know about
2197                  * this timing tweak
2198                  * (we need to do it to avoid a lockup, though) */
2199 
2200                 dev_dbg(chip->card->dev, "delay was too low (%d)!\n", delay);
2201                 delay = 49; /* minimum time is 49 ticks */
2202         }
2203         dev_dbg(chip->card->dev, "setting timer countdown value %d\n", delay);
2204         delay |= TIMER_COUNTDOWN_ENABLE | TIMER_IRQ_ENABLE;
2205         spin_lock_irqsave(&chip->reg_lock, flags);
2206         snd_azf3328_ctrl_outl(chip, IDX_IO_TIMER_VALUE, delay);
2207         spin_unlock_irqrestore(&chip->reg_lock, flags);
2208         return 0;
2209 }
2210 
2211 static int
2212 snd_azf3328_timer_stop(struct snd_timer *timer)
2213 {
2214         struct snd_azf3328 *chip;
2215         unsigned long flags;
2216 
2217         chip = snd_timer_chip(timer);
2218         spin_lock_irqsave(&chip->reg_lock, flags);
2219         /* disable timer countdown and interrupt */
2220         /* Hmm, should we write TIMER_IRQ_ACK here?
2221            YES indeed, otherwise a rogue timer operation - which prompts
2222            ALSA(?) to call repeated stop() in vain, but NOT start() -
2223            will never end (value 0x03 is kept shown in control byte).
2224            Simply manually poking 0x04 _once_ immediately successfully stops
2225            the hardware/ALSA interrupt activity. */
2226         snd_azf3328_ctrl_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x04);
2227         spin_unlock_irqrestore(&chip->reg_lock, flags);
2228         return 0;
2229 }
2230 
2231 
2232 static int
2233 snd_azf3328_timer_precise_resolution(struct snd_timer *timer,
2234                                                unsigned long *num, unsigned long *den)
2235 {
2236         *num = 1;
2237         *den = 1024000 / seqtimer_scaling;
2238         return 0;
2239 }
2240 
2241 static struct snd_timer_hardware snd_azf3328_timer_hw = {
2242         .flags = SNDRV_TIMER_HW_AUTO,
2243         .resolution = 977, /* 1000000/1024000 = 0.9765625us */
2244         .ticks = 1024000, /* max tick count, defined by the value register; actually it's not 1024000, but 1048576, but we don't care */
2245         .start = snd_azf3328_timer_start,
2246         .stop = snd_azf3328_timer_stop,
2247         .precise_resolution = snd_azf3328_timer_precise_resolution,
2248 };
2249 
2250 static int
2251 snd_azf3328_timer(struct snd_azf3328 *chip, int device)
2252 {
2253         struct snd_timer *timer = NULL;
2254         struct snd_timer_id tid;
2255         int err;
2256 
2257         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
2258         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
2259         tid.card = chip->card->number;
2260         tid.device = device;
2261         tid.subdevice = 0;
2262 
2263         snd_azf3328_timer_hw.resolution *= seqtimer_scaling;
2264         snd_azf3328_timer_hw.ticks /= seqtimer_scaling;
2265 
2266         err = snd_timer_new(chip->card, "AZF3328", &tid, &timer);
2267         if (err < 0)
2268                 goto out;
2269 
2270         strcpy(timer->name, "AZF3328 timer");
2271         timer->private_data = chip;
2272         timer->hw = snd_azf3328_timer_hw;
2273 
2274         chip->timer = timer;
2275 
2276         snd_azf3328_timer_stop(timer);
2277 
2278         err = 0;
2279 
2280 out:
2281         return err;
2282 }
2283 
2284 /******************************************************************/
2285 
2286 static int
2287 snd_azf3328_free(struct snd_azf3328 *chip)
2288 {
2289         if (chip->irq < 0)
2290                 goto __end_hw;
2291 
2292         snd_azf3328_mixer_reset(chip);
2293 
2294         snd_azf3328_timer_stop(chip->timer);
2295         snd_azf3328_gameport_free(chip);
2296 
2297         if (chip->irq >= 0)
2298                 synchronize_irq(chip->irq);
2299 __end_hw:
2300         if (chip->irq >= 0)
2301                 free_irq(chip->irq, chip);
2302         pci_release_regions(chip->pci);
2303         pci_disable_device(chip->pci);
2304 
2305         kfree(chip);
2306         return 0;
2307 }
2308 
2309 static int
2310 snd_azf3328_dev_free(struct snd_device *device)
2311 {
2312         struct snd_azf3328 *chip = device->device_data;
2313         return snd_azf3328_free(chip);
2314 }
2315 
2316 #if 0
2317 /* check whether a bit can be modified */
2318 static void
2319 snd_azf3328_test_bit(unsigned unsigned reg, int bit)
2320 {
2321         unsigned char val, valoff, valon;
2322 
2323         val = inb(reg);
2324 
2325         outb(val & ~(1 << bit), reg);
2326         valoff = inb(reg);
2327 
2328         outb(val|(1 << bit), reg);
2329         valon = inb(reg);
2330 
2331         outb(val, reg);
2332 
2333         printk(KERN_DEBUG "reg %04x bit %d: %02x %02x %02x\n",
2334                                 reg, bit, val, valoff, valon
2335         );
2336 }
2337 #endif
2338 
2339 static inline void
2340 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip)
2341 {
2342         u16 tmp;
2343 
2344         dev_dbg(chip->card->dev,
2345                 "ctrl_io 0x%lx, game_io 0x%lx, mpu_io 0x%lx, "
2346                 "opl3_io 0x%lx, mixer_io 0x%lx, irq %d\n",
2347                 chip->ctrl_io, chip->game_io, chip->mpu_io,
2348                 chip->opl3_io, chip->mixer_io, chip->irq);
2349 
2350         dev_dbg(chip->card->dev,
2351                 "game %02x %02x %02x %02x %02x %02x\n",
2352                 snd_azf3328_game_inb(chip, 0),
2353                 snd_azf3328_game_inb(chip, 1),
2354                 snd_azf3328_game_inb(chip, 2),
2355                 snd_azf3328_game_inb(chip, 3),
2356                 snd_azf3328_game_inb(chip, 4),
2357                 snd_azf3328_game_inb(chip, 5));
2358 
2359         for (tmp = 0; tmp < 0x07; tmp += 1)
2360                 dev_dbg(chip->card->dev,
2361                         "mpu_io 0x%04x\n", inb(chip->mpu_io + tmp));
2362 
2363         for (tmp = 0; tmp <= 0x07; tmp += 1)
2364                 dev_dbg(chip->card->dev,
2365                         "0x%02x: game200 0x%04x, game208 0x%04x\n",
2366                         tmp, inb(0x200 + tmp), inb(0x208 + tmp));
2367 
2368         for (tmp = 0; tmp <= 0x01; tmp += 1)
2369                 dev_dbg(chip->card->dev,
2370                         "0x%02x: mpu300 0x%04x, mpu310 0x%04x, mpu320 0x%04x, "
2371                         "mpu330 0x%04x opl388 0x%04x opl38c 0x%04x\n",
2372                                 tmp,
2373                                 inb(0x300 + tmp),
2374                                 inb(0x310 + tmp),
2375                                 inb(0x320 + tmp),
2376                                 inb(0x330 + tmp),
2377                                 inb(0x388 + tmp),
2378                                 inb(0x38c + tmp));
2379 
2380         for (tmp = 0; tmp < AZF_IO_SIZE_CTRL; tmp += 2)
2381                 dev_dbg(chip->card->dev,
2382                         "ctrl 0x%02x: 0x%04x\n",
2383                         tmp, snd_azf3328_ctrl_inw(chip, tmp));
2384 
2385         for (tmp = 0; tmp < AZF_IO_SIZE_MIXER; tmp += 2)
2386                 dev_dbg(chip->card->dev,
2387                         "mixer 0x%02x: 0x%04x\n",
2388                         tmp, snd_azf3328_mixer_inw(chip, tmp));
2389 }
2390 
2391 static int
2392 snd_azf3328_create(struct snd_card *card,
2393                    struct pci_dev *pci,
2394                    unsigned long device_type,
2395                    struct snd_azf3328 **rchip)
2396 {
2397         struct snd_azf3328 *chip;
2398         int err;
2399         static struct snd_device_ops ops = {
2400                 .dev_free =     snd_azf3328_dev_free,
2401         };
2402         u8 dma_init;
2403         enum snd_azf3328_codec_type codec_type;
2404         struct snd_azf3328_codec_data *codec_setup;
2405 
2406         *rchip = NULL;
2407 
2408         err = pci_enable_device(pci);
2409         if (err < 0)
2410                 return err;
2411 
2412         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2413         if (chip == NULL) {
2414                 err = -ENOMEM;
2415                 goto out_err;
2416         }
2417         spin_lock_init(&chip->reg_lock);
2418         chip->card = card;
2419         chip->pci = pci;
2420         chip->irq = -1;
2421 
2422         /* check if we can restrict PCI DMA transfers to 24 bits */
2423         if (pci_set_dma_mask(pci, DMA_BIT_MASK(24)) < 0 ||
2424             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(24)) < 0) {
2425                 dev_err(card->dev,
2426                         "architecture does not support 24bit PCI busmaster DMA\n"
2427                 );
2428                 err = -ENXIO;
2429                 goto out_err;
2430         }
2431 
2432         err = pci_request_regions(pci, "Aztech AZF3328");
2433         if (err < 0)
2434                 goto out_err;
2435 
2436         chip->ctrl_io  = pci_resource_start(pci, 0);
2437         chip->game_io  = pci_resource_start(pci, 1);
2438         chip->mpu_io   = pci_resource_start(pci, 2);
2439         chip->opl3_io  = pci_resource_start(pci, 3);
2440         chip->mixer_io = pci_resource_start(pci, 4);
2441 
2442         codec_setup = &chip->codecs[AZF_CODEC_PLAYBACK];
2443         codec_setup->io_base = chip->ctrl_io + AZF_IO_OFFS_CODEC_PLAYBACK;
2444         codec_setup->lock = &chip->reg_lock;
2445         codec_setup->type = AZF_CODEC_PLAYBACK;
2446         codec_setup->name = "PLAYBACK";
2447 
2448         codec_setup = &chip->codecs[AZF_CODEC_CAPTURE];
2449         codec_setup->io_base = chip->ctrl_io + AZF_IO_OFFS_CODEC_CAPTURE;
2450         codec_setup->lock = &chip->reg_lock;
2451         codec_setup->type = AZF_CODEC_CAPTURE;
2452         codec_setup->name = "CAPTURE";
2453 
2454         codec_setup = &chip->codecs[AZF_CODEC_I2S_OUT];
2455         codec_setup->io_base = chip->ctrl_io + AZF_IO_OFFS_CODEC_I2S_OUT;
2456         codec_setup->lock = &chip->reg_lock;
2457         codec_setup->type = AZF_CODEC_I2S_OUT;
2458         codec_setup->name = "I2S_OUT";
2459 
2460         if (request_irq(pci->irq, snd_azf3328_interrupt,
2461                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
2462                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2463                 err = -EBUSY;
2464                 goto out_err;
2465         }
2466         chip->irq = pci->irq;
2467         pci_set_master(pci);
2468         synchronize_irq(chip->irq);
2469 
2470         snd_azf3328_debug_show_ports(chip);
2471 
2472         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
2473         if (err < 0)
2474                 goto out_err;
2475 
2476         /* create mixer interface & switches */
2477         err = snd_azf3328_mixer_new(chip);
2478         if (err < 0)
2479                 goto out_err;
2480 
2481         /* standard codec init stuff */
2482                 /* default DMA init value */
2483         dma_init = DMA_RUN_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE;
2484 
2485         for (codec_type = AZF_CODEC_PLAYBACK;
2486                 codec_type <= AZF_CODEC_I2S_OUT; ++codec_type) {
2487                 struct snd_azf3328_codec_data *codec =
2488                          &chip->codecs[codec_type];
2489 
2490                 /* shutdown codecs to reduce power / noise */
2491                         /* have ...ctrl_codec_activity() act properly */
2492                 codec->running = 1;
2493                 snd_azf3328_ctrl_codec_activity(chip, codec_type, 0);
2494 
2495                 spin_lock_irq(codec->lock);
2496                 snd_azf3328_codec_outb(codec, IDX_IO_CODEC_DMA_FLAGS,
2497                                                  dma_init);
2498                 spin_unlock_irq(codec->lock);
2499         }
2500 
2501         *rchip = chip;
2502 
2503         err = 0;
2504         goto out;
2505 
2506 out_err:
2507         if (chip)
2508                 snd_azf3328_free(chip);
2509         pci_disable_device(pci);
2510 
2511 out:
2512         return err;
2513 }
2514 
2515 static int
2516 snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
2517 {
2518         static int dev;
2519         struct snd_card *card;
2520         struct snd_azf3328 *chip;
2521         struct snd_opl3 *opl3;
2522         int err;
2523 
2524         if (dev >= SNDRV_CARDS) {
2525                 err = -ENODEV;
2526                 goto out;
2527         }
2528         if (!enable[dev]) {
2529                 dev++;
2530                 err = -ENOENT;
2531                 goto out;
2532         }
2533 
2534         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2535                            0, &card);
2536         if (err < 0)
2537                 goto out;
2538 
2539         strcpy(card->driver, "AZF3328");
2540         strcpy(card->shortname, "Aztech AZF3328 (PCI168)");
2541 
2542         err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip);
2543         if (err < 0)
2544                 goto out_err;
2545 
2546         card->private_data = chip;
2547 
2548         /* chose to use MPU401_HW_AZT2320 ID instead of MPU401_HW_MPU401,
2549            since our hardware ought to be similar, thus use same ID. */
2550         err = snd_mpu401_uart_new(
2551                 card, 0,
2552                 MPU401_HW_AZT2320, chip->mpu_io,
2553                 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
2554                 -1, &chip->rmidi
2555         );
2556         if (err < 0) {
2557                 dev_err(card->dev, "no MPU-401 device at 0x%lx?\n",
2558                                 chip->mpu_io
2559                 );
2560                 goto out_err;
2561         }
2562 
2563         err = snd_azf3328_timer(chip, 0);
2564         if (err < 0)
2565                 goto out_err;
2566 
2567         err = snd_azf3328_pcm(chip);
2568         if (err < 0)
2569                 goto out_err;
2570 
2571         if (snd_opl3_create(card, chip->opl3_io, chip->opl3_io+2,
2572                             OPL3_HW_AUTO, 1, &opl3) < 0) {
2573                 dev_err(card->dev, "no OPL3 device at 0x%lx-0x%lx?\n",
2574                            chip->opl3_io, chip->opl3_io+2
2575                 );
2576         } else {
2577                 /* need to use IDs 1, 2 since ID 0 is snd_azf3328_timer above */
2578                 err = snd_opl3_timer_new(opl3, 1, 2);
2579                 if (err < 0)
2580                         goto out_err;
2581                 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
2582                 if (err < 0)
2583                         goto out_err;
2584                 opl3->private_data = chip;
2585         }
2586 
2587         sprintf(card->longname, "%s at 0x%lx, irq %i",
2588                 card->shortname, chip->ctrl_io, chip->irq);
2589 
2590         err = snd_card_register(card);
2591         if (err < 0)
2592                 goto out_err;
2593 
2594 #ifdef MODULE
2595         dev_info(card->dev,
2596                  "Sound driver for Aztech AZF3328-based soundcards such as PCI168.\n");
2597         dev_info(card->dev,
2598                  "Hardware was completely undocumented, unfortunately.\n");
2599         dev_info(card->dev,
2600                  "Feel free to contact andi AT lisas.de for bug reports etc.!\n");
2601         dev_info(card->dev,
2602                  "User-scalable sequencer timer set to %dHz (1024000Hz / %d).\n",
2603                  1024000 / seqtimer_scaling, seqtimer_scaling);
2604 #endif
2605 
2606         snd_azf3328_gameport(chip, dev);
2607 
2608         pci_set_drvdata(pci, card);
2609         dev++;
2610 
2611         err = 0;
2612         goto out;
2613 
2614 out_err:
2615         dev_err(card->dev, "something failed, exiting\n");
2616         snd_card_free(card);
2617 
2618 out:
2619         return err;
2620 }
2621 
2622 static void
2623 snd_azf3328_remove(struct pci_dev *pci)
2624 {
2625         snd_card_free(pci_get_drvdata(pci));
2626 }
2627 
2628 #ifdef CONFIG_PM_SLEEP
2629 static inline void
2630 snd_azf3328_suspend_regs(const struct snd_azf3328 *chip,
2631                          unsigned long io_addr, unsigned count, u32 *saved_regs)
2632 {
2633         unsigned reg;
2634 
2635         for (reg = 0; reg < count; ++reg) {
2636                 *saved_regs = inl(io_addr);
2637                 dev_dbg(chip->card->dev, "suspend: io 0x%04lx: 0x%08x\n",
2638                         io_addr, *saved_regs);
2639                 ++saved_regs;
2640                 io_addr += sizeof(*saved_regs);
2641         }
2642 }
2643 
2644 static inline void
2645 snd_azf3328_resume_regs(const struct snd_azf3328 *chip,
2646                         const u32 *saved_regs,
2647                         unsigned long io_addr,
2648                         unsigned count
2649 )
2650 {
2651         unsigned reg;
2652 
2653         for (reg = 0; reg < count; ++reg) {
2654                 outl(*saved_regs, io_addr);
2655                 dev_dbg(chip->card->dev,
2656                         "resume: io 0x%04lx: 0x%08x --> 0x%08x\n",
2657                         io_addr, *saved_regs, inl(io_addr));
2658                 ++saved_regs;
2659                 io_addr += sizeof(*saved_regs);
2660         }
2661 }
2662 
2663 static inline void
2664 snd_azf3328_suspend_ac97(struct snd_azf3328 *chip)
2665 {
2666 #ifdef AZF_USE_AC97_LAYER
2667         snd_ac97_suspend(chip->ac97);
2668 #else
2669         snd_azf3328_suspend_regs(chip, chip->mixer_io,
2670                 ARRAY_SIZE(chip->saved_regs_mixer), chip->saved_regs_mixer);
2671 
2672         /* make sure to disable master volume etc. to prevent looping sound */
2673         snd_azf3328_mixer_mute_control_master(chip, 1);
2674         snd_azf3328_mixer_mute_control_pcm(chip, 1);
2675 #endif /* AZF_USE_AC97_LAYER */
2676 }
2677 
2678 static inline void
2679 snd_azf3328_resume_ac97(const struct snd_azf3328 *chip)
2680 {
2681 #ifdef AZF_USE_AC97_LAYER
2682         snd_ac97_resume(chip->ac97);
2683 #else
2684         snd_azf3328_resume_regs(chip, chip->saved_regs_mixer, chip->mixer_io,
2685                                         ARRAY_SIZE(chip->saved_regs_mixer));
2686 
2687         /* unfortunately with 32bit transfers, IDX_MIXER_PLAY_MASTER (0x02)
2688            and IDX_MIXER_RESET (offset 0x00) get touched at the same time,
2689            resulting in a mixer reset condition persisting until _after_
2690            master vol was restored. Thus master vol needs an extra restore. */
2691         outw(((u16 *)chip->saved_regs_mixer)[1], chip->mixer_io + 2);
2692 #endif /* AZF_USE_AC97_LAYER */
2693 }
2694 
2695 static int
2696 snd_azf3328_suspend(struct device *dev)
2697 {
2698         struct snd_card *card = dev_get_drvdata(dev);
2699         struct snd_azf3328 *chip = card->private_data;
2700         u16 *saved_regs_ctrl_u16;
2701 
2702         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2703 
2704         /* same pcm object for playback/capture */
2705         snd_pcm_suspend_all(chip->pcm[AZF_CODEC_PLAYBACK]);
2706         snd_pcm_suspend_all(chip->pcm[AZF_CODEC_I2S_OUT]);
2707 
2708         snd_azf3328_suspend_ac97(chip);
2709 
2710         snd_azf3328_suspend_regs(chip, chip->ctrl_io,
2711                 ARRAY_SIZE(chip->saved_regs_ctrl), chip->saved_regs_ctrl);
2712 
2713         /* manually store the one currently relevant write-only reg, too */
2714         saved_regs_ctrl_u16 = (u16 *)chip->saved_regs_ctrl;
2715         saved_regs_ctrl_u16[IDX_IO_6AH / 2] = chip->shadow_reg_ctrl_6AH;
2716 
2717         snd_azf3328_suspend_regs(chip, chip->game_io,
2718                 ARRAY_SIZE(chip->saved_regs_game), chip->saved_regs_game);
2719         snd_azf3328_suspend_regs(chip, chip->mpu_io,
2720                 ARRAY_SIZE(chip->saved_regs_mpu), chip->saved_regs_mpu);
2721         snd_azf3328_suspend_regs(chip, chip->opl3_io,
2722                 ARRAY_SIZE(chip->saved_regs_opl3), chip->saved_regs_opl3);
2723         return 0;
2724 }
2725 
2726 static int
2727 snd_azf3328_resume(struct device *dev)
2728 {
2729         struct snd_card *card = dev_get_drvdata(dev);
2730         const struct snd_azf3328 *chip = card->private_data;
2731 
2732         snd_azf3328_resume_regs(chip, chip->saved_regs_game, chip->game_io,
2733                                         ARRAY_SIZE(chip->saved_regs_game));
2734         snd_azf3328_resume_regs(chip, chip->saved_regs_mpu, chip->mpu_io,
2735                                         ARRAY_SIZE(chip->saved_regs_mpu));
2736         snd_azf3328_resume_regs(chip, chip->saved_regs_opl3, chip->opl3_io,
2737                                         ARRAY_SIZE(chip->saved_regs_opl3));
2738 
2739         snd_azf3328_resume_ac97(chip);
2740 
2741         snd_azf3328_resume_regs(chip, chip->saved_regs_ctrl, chip->ctrl_io,
2742                                         ARRAY_SIZE(chip->saved_regs_ctrl));
2743 
2744         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2745         return 0;
2746 }
2747 
2748 static SIMPLE_DEV_PM_OPS(snd_azf3328_pm, snd_azf3328_suspend, snd_azf3328_resume);
2749 #define SND_AZF3328_PM_OPS      &snd_azf3328_pm
2750 #else
2751 #define SND_AZF3328_PM_OPS      NULL
2752 #endif /* CONFIG_PM_SLEEP */
2753 
2754 static struct pci_driver azf3328_driver = {
2755         .name = KBUILD_MODNAME,
2756         .id_table = snd_azf3328_ids,
2757         .probe = snd_azf3328_probe,
2758         .remove = snd_azf3328_remove,
2759         .driver = {
2760                 .pm = SND_AZF3328_PM_OPS,
2761         },
2762 };
2763 
2764 module_pci_driver(azf3328_driver);
2765 

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