ALSA: azt3328: improve snd_azf3328_codec_setdmaa()
[linux-2.6.git] / sound / pci / azt3328.c
1 /*
2  *  azt3328.c - driver for Aztech AZF3328 based soundcards (e.g. PCI168).
3  *  Copyright (C) 2002, 2005 - 2010 by Andreas Mohr <andi AT lisas.de>
4  *
5  *  Framework borrowed from Bart Hartgers's als4000.c.
6  *  Driver developed on PCI168 AP(W) version (PCI rev. 10, subsystem ID 1801),
7  *  found in a Fujitsu-Siemens PC ("Cordant", aluminum case).
8  *  Other versions are:
9  *  PCI168 A(W), sub ID 1800
10  *  PCI168 A/AP, sub ID 8000
11  *  Please give me feedback in case you try my driver with one of these!!
12  *
13  *  Keywords: Windows XP Vista 168nt4-125.zip 168win95-125.zip PCI 168 download
14  *  (XP/Vista do not support this card at all but every Linux distribution
15  *   has very good support out of the box;
16  *   just to make sure that the right people hit this and get to know that,
17  *   despite the high level of Internet ignorance - as usual :-P -
18  *   about very good support for this card - on Linux!)
19  *
20  * GPL LICENSE
21  *  This program is free software; you can redistribute it and/or modify
22  *  it under the terms of the GNU General Public License as published by
23  *  the Free Software Foundation; either version 2 of the License, or
24  *  (at your option) any later version.
25  *
26  *  This program is distributed in the hope that it will be useful,
27  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
28  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
29  *  GNU General Public License for more details.
30
31  *  You should have received a copy of the GNU General Public License
32  *  along with this program; if not, write to the Free Software
33  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
34  *
35  * NOTES
36  *  Since Aztech does not provide any chipset documentation,
37  *  even on repeated request to various addresses,
38  *  and the answer that was finally given was negative
39  *  (and I was stupid enough to manage to get hold of a PCI168 soundcard
40  *  in the first place >:-P}),
41  *  I was forced to base this driver on reverse engineering
42  *  (3 weeks' worth of evenings filled with driver work).
43  *  (and no, I did NOT go the easy way: to pick up a SB PCI128 for 9 Euros)
44  *
45  *  It is quite likely that the AZF3328 chip is the PCI cousin of the
46  *  AZF3318 ("azt1020 pnp", "MM Pro 16") ISA chip, given very similar specs.
47  *
48  *  The AZF3328 chip (note: AZF3328, *not* AZT3328, that's just the driver name
49  *  for compatibility reasons) from Azfin (joint-venture of Aztech and Fincitec,
50  *  Fincitec acquired by National Semiconductor in 2002, together with the
51  *  Fincitec-related company ARSmikro) has the following features:
52  *
53  *  - compatibility & compliance:
54  *    - Microsoft PC 97 ("PC 97 Hardware Design Guide",
55  *                       http://www.microsoft.com/whdc/archive/pcguides.mspx)
56  *    - Microsoft PC 98 Baseline Audio
57  *    - MPU401 UART
58  *    - Sound Blaster Emulation (DOS Box)
59  *  - builtin AC97 conformant codec (SNR over 80dB)
60  *    Note that "conformant" != "compliant"!! this chip's mixer register layout
61  *    *differs* from the standard AC97 layout:
62  *    they chose to not implement the headphone register (which is not a
63  *    problem since it's merely optional), yet when doing this, they committed
64  *    the grave sin of letting other registers follow immediately instead of
65  *    keeping a headphone dummy register, thereby shifting the mixer register
66  *    addresses illegally. So far unfortunately it looks like the very flexible
67  *    ALSA AC97 support is still not enough to easily compensate for such a
68  *    grave layout violation despite all tweaks and quirks mechanisms it offers.
69  *  - builtin genuine OPL3 - verified to work fine, 20080506
70  *  - full duplex 16bit playback/record at independent sampling rate
71  *  - MPU401 (+ legacy address support, claimed by one official spec sheet)
72  *    FIXME: how to enable legacy addr??
73  *  - game port (legacy address support)
74  *  - builtin DirectInput support, helps reduce CPU overhead (interrupt-driven
75  *    features supported). - See common term "Digital Enhanced Game Port"...
76  *    (probably DirectInput 3.0 spec - confirm)
77  *  - builtin 3D enhancement (said to be YAMAHA Ymersion)
78  *  - built-in General DirectX timer having a 20 bits counter
79  *    with 1us resolution (see below!)
80  *  - I2S serial output port for external DAC
81  *    [FIXME: 3.3V or 5V level? maximum rate is 66.2kHz right?]
82  *  - supports 33MHz PCI spec 2.1, PCI power management 1.0, compliant with ACPI
83  *  - supports hardware volume control
84  *  - single chip low cost solution (128 pin QFP)
85  *  - supports programmable Sub-vendor and Sub-system ID [24C02 SEEPROM chip]
86  *    required for Microsoft's logo compliance (FIXME: where?)
87  *    At least the Trident 4D Wave DX has one bit somewhere
88  *    to enable writes to PCI subsystem VID registers, that should be it.
89  *    This might easily be in extended PCI reg space, since PCI168 also has
90  *    some custom data starting at 0x80. What kind of config settings
91  *    are located in our extended PCI space anyway??
92  *  - PCI168 AP(W) card: power amplifier with 4 Watts/channel at 4 Ohms
93  *    [TDA1517P chip]
94  *
95  *  Note that this driver now is actually *better* than the Windows driver,
96  *  since it additionally supports the card's 1MHz DirectX timer - just try
97  *  the following snd-seq module parameters etc.:
98  *  - options snd-seq seq_default_timer_class=2 seq_default_timer_sclass=0
99  *    seq_default_timer_card=0 seq_client_load=1 seq_default_timer_device=0
100  *    seq_default_timer_subdevice=0 seq_default_timer_resolution=1000000
101  *  - "timidity -iAv -B2,8 -Os -EFreverb=0"
102  *  - "pmidi -p 128:0 jazz.mid"
103  *
104  *  OPL3 hardware playback testing, try something like:
105  *  cat /proc/asound/hwdep
106  *  and
107  *  aconnect -o
108  *  Then use
109  *  sbiload -Dhw:x,y --opl3 /usr/share/sounds/opl3/std.o3 ......./drums.o3
110  *  where x,y is the xx-yy number as given in hwdep.
111  *  Then try
112  *  pmidi -p a:b jazz.mid
113  *  where a:b is the client number plus 0 usually, as given by aconnect above.
114  *  Oh, and make sure to unmute the FM mixer control (doh!)
115  *  NOTE: power use during OPL3 playback is _VERY_ high (70W --> 90W!)
116  *  despite no CPU activity, possibly due to hindering ACPI idling somehow.
117  *  Shouldn't be a problem of the AZF3328 chip itself, I'd hope.
118  *  Higher PCM / FM mixer levels seem to conflict (causes crackling),
119  *  at least sometimes.   Maybe even use with hardware sequencer timer above :)
120  *  adplay/adplug-utils might soon offer hardware-based OPL3 playback, too.
121  *
122  *  Certain PCI versions of this card are susceptible to DMA traffic underruns
123  *  in some systems (resulting in sound crackling/clicking/popping),
124  *  probably because they don't have a DMA FIFO buffer or so.
125  *  Overview (PCI ID/PCI subID/PCI rev.):
126  *  - no DMA crackling on SiS735: 0x50DC/0x1801/16
127  *  - unknown performance: 0x50DC/0x1801/10
128  *    (well, it's not bad on an Athlon 1800 with now very optimized IRQ handler)
129  *
130  *  Crackling happens with VIA chipsets or, in my case, an SiS735, which is
131  *  supposed to be very fast and supposed to get rid of crackling much
132  *  better than a VIA, yet ironically I still get crackling, like many other
133  *  people with the same chipset.
134  *  Possible remedies:
135  *  - use speaker (amplifier) output instead of headphone output
136  *    (in case crackling is due to overloaded output clipping)
137  *  - plug card into a different PCI slot, preferrably one that isn't shared
138  *    too much (this helps a lot, but not completely!)
139  *  - get rid of PCI VGA card, use AGP instead
140  *  - upgrade or downgrade BIOS
141  *  - fiddle with PCI latency settings (setpci -v -s BUSID latency_timer=XX)
142  *    Not too helpful.
143  *  - Disable ACPI/power management/"Auto Detect RAM/PCI Clk" in BIOS
144  *
145  * BUGS
146  *  - full-duplex might *still* be problematic, however a recent test was fine
147  *  - (non-bug) "Bass/Treble or 3D settings don't work" - they do get evaluated
148  *    if you set PCM output switch to "pre 3D" instead of "post 3D".
149  *    If this can't be set, then get a mixer application that Isn't Stupid (tm)
150  *    (e.g. kmix, gamix) - unfortunately several are!!
151  *  - locking is not entirely clean, especially the audio stream activity
152  *    ints --> may be racy
153  *  - an _unconnected_ secondary joystick at the gameport will be reported
154  *    to be "active" (floating values, not precisely -1) due to the way we need
155  *    to read the Digital Enhanced Game Port. Not sure whether it is fixable.
156  *
157  * TODO
158  *  - use PCI_VDEVICE
159  *  - verify driver status on x86_64
160  *  - test multi-card driver operation
161  *  - (ab)use 1MHz DirectX timer as kernel clocksource
162  *  - test MPU401 MIDI playback etc.
163  *  - add more power micro-management (disable various units of the card
164  *    as long as they're unused, to improve audio quality and save power).
165  *    However this requires more I/O ports which I haven't figured out yet
166  *    and which thus might not even exist...
167  *    The standard suspend/resume functionality could probably make use of
168  *    some improvement, too...
169  *  - figure out what all unknown port bits are responsible for
170  *  - figure out some cleverly evil scheme to possibly make ALSA AC97 code
171  *    fully accept our quite incompatible ""AC97"" mixer and thus save some
172  *    code (but I'm not too optimistic that doing this is possible at all)
173  *  - use MMIO (memory-mapped I/O)? Slightly faster access, e.g. for gameport.
174  */
175
176 #include <asm/io.h>
177 #include <linux/init.h>
178 #include <linux/bug.h> /* WARN_ONCE */
179 #include <linux/pci.h>
180 #include <linux/delay.h>
181 #include <linux/slab.h>
182 #include <linux/gameport.h>
183 #include <linux/moduleparam.h>
184 #include <linux/dma-mapping.h>
185 #include <sound/core.h>
186 #include <sound/control.h>
187 #include <sound/pcm.h>
188 #include <sound/rawmidi.h>
189 #include <sound/mpu401.h>
190 #include <sound/opl3.h>
191 #include <sound/initval.h>
192 #include "azt3328.h"
193
194 MODULE_AUTHOR("Andreas Mohr <andi AT lisas.de>");
195 MODULE_DESCRIPTION("Aztech AZF3328 (PCI168)");
196 MODULE_LICENSE("GPL");
197 MODULE_SUPPORTED_DEVICE("{{Aztech,AZF3328}}");
198
199 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
200 #define SUPPORT_GAMEPORT 1
201 #endif
202
203 /* === Debug settings ===
204   Further diagnostic functionality than the settings below
205   does not need to be provided, since one can easily write a POSIX shell script
206   to dump the card's I/O ports (those listed in lspci -v -v):
207   dump()
208   {
209     local descr=$1; local addr=$2; local count=$3
210
211     echo "${descr}: ${count} @ ${addr}:"
212     dd if=/dev/port skip=`printf %d ${addr}` count=${count} bs=1 \
213       2>/dev/null| hexdump -C
214   }
215   and then use something like
216   "dump joy200 0x200 8", "dump mpu388 0x388 4", "dump joy 0xb400 8",
217   "dump codec00 0xa800 32", "dump mixer 0xb800 64", "dump synth 0xbc00 8",
218   possibly within a "while true; do ... sleep 1; done" loop.
219   Tweaking ports could be done using
220   VALSTRING="`printf "%02x" $value`"
221   printf "\x""$VALSTRING"|dd of=/dev/port seek=`printf %d ${addr}` bs=1 \
222     2>/dev/null
223 */
224
225 #define DEBUG_MISC      0
226 #define DEBUG_CALLS     0
227 #define DEBUG_MIXER     0
228 #define DEBUG_CODEC     0
229 #define DEBUG_TIMER     0
230 #define DEBUG_GAME      0
231 #define DEBUG_PM        0
232 #define MIXER_TESTING   0
233
234 #if DEBUG_MISC
235 #define snd_azf3328_dbgmisc(format, args...) printk(KERN_DEBUG format, ##args)
236 #else
237 #define snd_azf3328_dbgmisc(format, args...)
238 #endif
239
240 #if DEBUG_CALLS
241 #define snd_azf3328_dbgcalls(format, args...) printk(format, ##args)
242 #define snd_azf3328_dbgcallenter() printk(KERN_DEBUG "--> %s\n", __func__)
243 #define snd_azf3328_dbgcallleave() printk(KERN_DEBUG "<-- %s\n", __func__)
244 #else
245 #define snd_azf3328_dbgcalls(format, args...)
246 #define snd_azf3328_dbgcallenter()
247 #define snd_azf3328_dbgcallleave()
248 #endif
249
250 #if DEBUG_MIXER
251 #define snd_azf3328_dbgmixer(format, args...) printk(KERN_DEBUG format, ##args)
252 #else
253 #define snd_azf3328_dbgmixer(format, args...)
254 #endif
255
256 #if DEBUG_CODEC
257 #define snd_azf3328_dbgcodec(format, args...) printk(KERN_DEBUG format, ##args)
258 #else
259 #define snd_azf3328_dbgcodec(format, args...)
260 #endif
261
262 #if DEBUG_MISC
263 #define snd_azf3328_dbgtimer(format, args...) printk(KERN_DEBUG format, ##args)
264 #else
265 #define snd_azf3328_dbgtimer(format, args...)
266 #endif
267
268 #if DEBUG_GAME
269 #define snd_azf3328_dbggame(format, args...) printk(KERN_DEBUG format, ##args)
270 #else
271 #define snd_azf3328_dbggame(format, args...)
272 #endif
273
274 #if DEBUG_PM
275 #define snd_azf3328_dbgpm(format, args...) printk(KERN_DEBUG format, ##args)
276 #else
277 #define snd_azf3328_dbgpm(format, args...)
278 #endif
279
280 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
281 module_param_array(index, int, NULL, 0444);
282 MODULE_PARM_DESC(index, "Index value for AZF3328 soundcard.");
283
284 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
285 module_param_array(id, charp, NULL, 0444);
286 MODULE_PARM_DESC(id, "ID string for AZF3328 soundcard.");
287
288 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
289 module_param_array(enable, bool, NULL, 0444);
290 MODULE_PARM_DESC(enable, "Enable AZF3328 soundcard.");
291
292 static int seqtimer_scaling = 128;
293 module_param(seqtimer_scaling, int, 0444);
294 MODULE_PARM_DESC(seqtimer_scaling, "Set 1024000Hz sequencer timer scale factor (lockup danger!). Default 128.");
295
296 enum snd_azf3328_codec_type {
297   /* warning: fixed indices (also used for bitmask checks!) */
298   AZF_CODEC_PLAYBACK = 0,
299   AZF_CODEC_CAPTURE = 1,
300   AZF_CODEC_I2S_OUT = 2,
301 };
302
303 struct snd_azf3328_codec_data {
304         unsigned long io_base; /* keep first! (avoid offset calc) */
305         unsigned int dma_base; /* helper to avoid an indirection in hotpath */
306         spinlock_t *lock; /* TODO: convert to our own per-codec lock member */
307         struct snd_pcm_substream *substream;
308         bool running;
309         enum snd_azf3328_codec_type type;
310         const char *name;
311 };
312
313 struct snd_azf3328 {
314         /* often-used fields towards beginning, then grouped */
315
316         unsigned long ctrl_io; /* usually 0xb000, size 128 */
317         unsigned long game_io;  /* usually 0xb400, size 8 */
318         unsigned long mpu_io;   /* usually 0xb800, size 4 */
319         unsigned long opl3_io; /* usually 0xbc00, size 8 */
320         unsigned long mixer_io; /* usually 0xc000, size 64 */
321
322         spinlock_t reg_lock;
323
324         struct snd_timer *timer;
325
326         struct snd_pcm *pcm[3];
327
328         /* playback, recording and I2S out codecs */
329         struct snd_azf3328_codec_data codecs[3];
330
331         struct snd_card *card;
332         struct snd_rawmidi *rmidi;
333
334 #ifdef SUPPORT_GAMEPORT
335         struct gameport *gameport;
336         u16 axes[4];
337 #endif
338
339         struct pci_dev *pci;
340         int irq;
341
342         /* register 0x6a is write-only, thus need to remember setting.
343          * If we need to add more registers here, then we might try to fold this
344          * into some transparent combined shadow register handling with
345          * CONFIG_PM register storage below, but that's slightly difficult. */
346         u16 shadow_reg_ctrl_6AH;
347
348 #ifdef CONFIG_PM
349         /* register value containers for power management
350          * Note: not always full I/O range preserved (similar to Win driver!) */
351         u32 saved_regs_ctrl[AZF_ALIGN(AZF_IO_SIZE_CTRL_PM) / 4];
352         u32 saved_regs_game[AZF_ALIGN(AZF_IO_SIZE_GAME_PM) / 4];
353         u32 saved_regs_mpu[AZF_ALIGN(AZF_IO_SIZE_MPU_PM) / 4];
354         u32 saved_regs_opl3[AZF_ALIGN(AZF_IO_SIZE_OPL3_PM) / 4];
355         u32 saved_regs_mixer[AZF_ALIGN(AZF_IO_SIZE_MIXER_PM) / 4];
356 #endif
357 };
358
359 static DEFINE_PCI_DEVICE_TABLE(snd_azf3328_ids) = {
360         { 0x122D, 0x50DC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* PCI168/3328 */
361         { 0x122D, 0x80DA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },   /* 3328 */
362         { 0, }
363 };
364
365 MODULE_DEVICE_TABLE(pci, snd_azf3328_ids);
366
367
368 static int
369 snd_azf3328_io_reg_setb(unsigned reg, u8 mask, bool do_set)
370 {
371         /* Well, strictly spoken, the inb/outb sequence isn't atomic
372            and would need locking. However we currently don't care
373            since it potentially complicates matters. */
374         u8 prev = inb(reg), new;
375
376         new = (do_set) ? (prev|mask) : (prev & ~mask);
377         /* we need to always write the new value no matter whether it differs
378          * or not, since some register bits don't indicate their setting */
379         outb(new, reg);
380         if (new != prev)
381                 return 1;
382
383         return 0;
384 }
385
386 static inline void
387 snd_azf3328_codec_outb(const struct snd_azf3328_codec_data *codec,
388                        unsigned reg,
389                        u8 value
390 )
391 {
392         outb(value, codec->io_base + reg);
393 }
394
395 static inline u8
396 snd_azf3328_codec_inb(const struct snd_azf3328_codec_data *codec, unsigned reg)
397 {
398         return inb(codec->io_base + reg);
399 }
400
401 static inline void
402 snd_azf3328_codec_outw(const struct snd_azf3328_codec_data *codec,
403                        unsigned reg,
404                        u16 value
405 )
406 {
407         outw(value, codec->io_base + reg);
408 }
409
410 static inline u16
411 snd_azf3328_codec_inw(const struct snd_azf3328_codec_data *codec, unsigned reg)
412 {
413         return inw(codec->io_base + reg);
414 }
415
416 static inline void
417 snd_azf3328_codec_outl(const struct snd_azf3328_codec_data *codec,
418                        unsigned reg,
419                        u32 value
420 )
421 {
422         outl(value, codec->io_base + reg);
423 }
424
425 static inline void
426 snd_azf3328_codec_outl_multi(const struct snd_azf3328_codec_data *codec,
427                              unsigned reg, const void *buffer, int count
428 )
429 {
430         unsigned long addr = codec->io_base + reg;
431         if (count) {
432                 const u32 *buf = buffer;
433                 do {
434                         outl(*buf++, addr);
435                         addr += 4;
436                 } while (--count);
437         }
438 }
439
440 static inline u32
441 snd_azf3328_codec_inl(const struct snd_azf3328_codec_data *codec, unsigned reg)
442 {
443         return inl(codec->io_base + reg);
444 }
445
446 static inline void
447 snd_azf3328_ctrl_outb(const struct snd_azf3328 *chip, unsigned reg, u8 value)
448 {
449         outb(value, chip->ctrl_io + reg);
450 }
451
452 static inline u8
453 snd_azf3328_ctrl_inb(const struct snd_azf3328 *chip, unsigned reg)
454 {
455         return inb(chip->ctrl_io + reg);
456 }
457
458 static inline void
459 snd_azf3328_ctrl_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
460 {
461         outw(value, chip->ctrl_io + reg);
462 }
463
464 static inline void
465 snd_azf3328_ctrl_outl(const struct snd_azf3328 *chip, unsigned reg, u32 value)
466 {
467         outl(value, chip->ctrl_io + reg);
468 }
469
470 static inline void
471 snd_azf3328_game_outb(const struct snd_azf3328 *chip, unsigned reg, u8 value)
472 {
473         outb(value, chip->game_io + reg);
474 }
475
476 static inline void
477 snd_azf3328_game_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
478 {
479         outw(value, chip->game_io + reg);
480 }
481
482 static inline u8
483 snd_azf3328_game_inb(const struct snd_azf3328 *chip, unsigned reg)
484 {
485         return inb(chip->game_io + reg);
486 }
487
488 static inline u16
489 snd_azf3328_game_inw(const struct snd_azf3328 *chip, unsigned reg)
490 {
491         return inw(chip->game_io + reg);
492 }
493
494 static inline void
495 snd_azf3328_mixer_outw(const struct snd_azf3328 *chip, unsigned reg, u16 value)
496 {
497         outw(value, chip->mixer_io + reg);
498 }
499
500 static inline u16
501 snd_azf3328_mixer_inw(const struct snd_azf3328 *chip, unsigned reg)
502 {
503         return inw(chip->mixer_io + reg);
504 }
505
506 #define AZF_MUTE_BIT 0x80
507
508 static bool
509 snd_azf3328_mixer_set_mute(const struct snd_azf3328 *chip,
510                            unsigned reg, bool do_mute
511 )
512 {
513         unsigned long portbase = chip->mixer_io + reg + 1;
514         bool updated;
515
516         /* the mute bit is on the *second* (i.e. right) register of a
517          * left/right channel setting */
518         updated = snd_azf3328_io_reg_setb(portbase, AZF_MUTE_BIT, do_mute);
519
520         /* indicate whether it was muted before */
521         return (do_mute) ? !updated : updated;
522 }
523
524 static void
525 snd_azf3328_mixer_write_volume_gradually(const struct snd_azf3328 *chip,
526                                          unsigned reg,
527                                          unsigned char dst_vol_left,
528                                          unsigned char dst_vol_right,
529                                          int chan_sel, int delay
530 )
531 {
532         unsigned long portbase = chip->mixer_io + reg;
533         unsigned char curr_vol_left = 0, curr_vol_right = 0;
534         int left_change = 0, right_change = 0;
535
536         snd_azf3328_dbgcallenter();
537
538         if (chan_sel & SET_CHAN_LEFT) {
539                 curr_vol_left  = inb(portbase + 1);
540
541                 /* take care of muting flag contained in left channel */
542                 if (curr_vol_left & AZF_MUTE_BIT)
543                         dst_vol_left |= AZF_MUTE_BIT;
544                 else
545                         dst_vol_left &= ~AZF_MUTE_BIT;
546
547                 left_change = (curr_vol_left > dst_vol_left) ? -1 : 1;
548         }
549
550         if (chan_sel & SET_CHAN_RIGHT) {
551                 curr_vol_right = inb(portbase + 0);
552
553                 right_change = (curr_vol_right > dst_vol_right) ? -1 : 1;
554         }
555
556         do {
557                 if (left_change) {
558                         if (curr_vol_left != dst_vol_left) {
559                                 curr_vol_left += left_change;
560                                 outb(curr_vol_left, portbase + 1);
561                         } else
562                             left_change = 0;
563                 }
564                 if (right_change) {
565                         if (curr_vol_right != dst_vol_right) {
566                                 curr_vol_right += right_change;
567
568                         /* during volume change, the right channel is crackling
569                          * somewhat more than the left channel, unfortunately.
570                          * This seems to be a hardware issue. */
571                                 outb(curr_vol_right, portbase + 0);
572                         } else
573                             right_change = 0;
574                 }
575                 if (delay)
576                         mdelay(delay);
577         } while ((left_change) || (right_change));
578         snd_azf3328_dbgcallleave();
579 }
580
581 /*
582  * general mixer element
583  */
584 struct azf3328_mixer_reg {
585         unsigned reg;
586         unsigned int lchan_shift, rchan_shift;
587         unsigned int mask;
588         unsigned int invert: 1;
589         unsigned int stereo: 1;
590         unsigned int enum_c: 4;
591 };
592
593 #define COMPOSE_MIXER_REG(reg,lchan_shift,rchan_shift,mask,invert,stereo,enum_c) \
594  ((reg) | (lchan_shift << 8) | (rchan_shift << 12) | \
595   (mask << 16) | \
596   (invert << 24) | \
597   (stereo << 25) | \
598   (enum_c << 26))
599
600 static void snd_azf3328_mixer_reg_decode(struct azf3328_mixer_reg *r, unsigned long val)
601 {
602         r->reg = val & 0xff;
603         r->lchan_shift = (val >> 8) & 0x0f;
604         r->rchan_shift = (val >> 12) & 0x0f;
605         r->mask = (val >> 16) & 0xff;
606         r->invert = (val >> 24) & 1;
607         r->stereo = (val >> 25) & 1;
608         r->enum_c = (val >> 26) & 0x0f;
609 }
610
611 /*
612  * mixer switches/volumes
613  */
614
615 #define AZF3328_MIXER_SWITCH(xname, reg, shift, invert) \
616 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
617   .info = snd_azf3328_info_mixer, \
618   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
619   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0x1, invert, 0, 0), \
620 }
621
622 #define AZF3328_MIXER_VOL_STEREO(xname, reg, mask, invert) \
623 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
624   .info = snd_azf3328_info_mixer, \
625   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
626   .private_value = COMPOSE_MIXER_REG(reg, 8, 0, mask, invert, 1, 0), \
627 }
628
629 #define AZF3328_MIXER_VOL_MONO(xname, reg, mask, is_right_chan) \
630 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
631   .info = snd_azf3328_info_mixer, \
632   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
633   .private_value = COMPOSE_MIXER_REG(reg, is_right_chan ? 0 : 8, 0, mask, 1, 0, 0), \
634 }
635
636 #define AZF3328_MIXER_VOL_SPECIAL(xname, reg, mask, shift, invert) \
637 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
638   .info = snd_azf3328_info_mixer, \
639   .get = snd_azf3328_get_mixer, .put = snd_azf3328_put_mixer, \
640   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, mask, invert, 0, 0), \
641 }
642
643 #define AZF3328_MIXER_ENUM(xname, reg, enum_c, shift) \
644 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
645   .info = snd_azf3328_info_mixer_enum, \
646   .get = snd_azf3328_get_mixer_enum, .put = snd_azf3328_put_mixer_enum, \
647   .private_value = COMPOSE_MIXER_REG(reg, shift, 0, 0, 0, 0, enum_c), \
648 }
649
650 static int
651 snd_azf3328_info_mixer(struct snd_kcontrol *kcontrol,
652                        struct snd_ctl_elem_info *uinfo)
653 {
654         struct azf3328_mixer_reg reg;
655
656         snd_azf3328_dbgcallenter();
657         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
658         uinfo->type = reg.mask == 1 ?
659                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
660         uinfo->count = reg.stereo + 1;
661         uinfo->value.integer.min = 0;
662         uinfo->value.integer.max = reg.mask;
663         snd_azf3328_dbgcallleave();
664         return 0;
665 }
666
667 static int
668 snd_azf3328_get_mixer(struct snd_kcontrol *kcontrol,
669                       struct snd_ctl_elem_value *ucontrol)
670 {
671         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
672         struct azf3328_mixer_reg reg;
673         u16 oreg, val;
674
675         snd_azf3328_dbgcallenter();
676         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
677
678         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
679         val = (oreg >> reg.lchan_shift) & reg.mask;
680         if (reg.invert)
681                 val = reg.mask - val;
682         ucontrol->value.integer.value[0] = val;
683         if (reg.stereo) {
684                 val = (oreg >> reg.rchan_shift) & reg.mask;
685                 if (reg.invert)
686                         val = reg.mask - val;
687                 ucontrol->value.integer.value[1] = val;
688         }
689         snd_azf3328_dbgmixer("get: %02x is %04x -> vol %02lx|%02lx "
690                              "(shift %02d|%02d, mask %02x, inv. %d, stereo %d)\n",
691                 reg.reg, oreg,
692                 ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
693                 reg.lchan_shift, reg.rchan_shift, reg.mask, reg.invert, reg.stereo);
694         snd_azf3328_dbgcallleave();
695         return 0;
696 }
697
698 static int
699 snd_azf3328_put_mixer(struct snd_kcontrol *kcontrol,
700                       struct snd_ctl_elem_value *ucontrol)
701 {
702         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
703         struct azf3328_mixer_reg reg;
704         u16 oreg, nreg, val;
705
706         snd_azf3328_dbgcallenter();
707         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
708         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
709         val = ucontrol->value.integer.value[0] & reg.mask;
710         if (reg.invert)
711                 val = reg.mask - val;
712         nreg = oreg & ~(reg.mask << reg.lchan_shift);
713         nreg |= (val << reg.lchan_shift);
714         if (reg.stereo) {
715                 val = ucontrol->value.integer.value[1] & reg.mask;
716                 if (reg.invert)
717                         val = reg.mask - val;
718                 nreg &= ~(reg.mask << reg.rchan_shift);
719                 nreg |= (val << reg.rchan_shift);
720         }
721         if (reg.mask >= 0x07) /* it's a volume control, so better take care */
722                 snd_azf3328_mixer_write_volume_gradually(
723                         chip, reg.reg, nreg >> 8, nreg & 0xff,
724                         /* just set both channels, doesn't matter */
725                         SET_CHAN_LEFT|SET_CHAN_RIGHT,
726                         0);
727         else
728                 snd_azf3328_mixer_outw(chip, reg.reg, nreg);
729
730         snd_azf3328_dbgmixer("put: %02x to %02lx|%02lx, "
731                              "oreg %04x; shift %02d|%02d -> nreg %04x; after: %04x\n",
732                 reg.reg, ucontrol->value.integer.value[0], ucontrol->value.integer.value[1],
733                 oreg, reg.lchan_shift, reg.rchan_shift,
734                 nreg, snd_azf3328_mixer_inw(chip, reg.reg));
735         snd_azf3328_dbgcallleave();
736         return (nreg != oreg);
737 }
738
739 static int
740 snd_azf3328_info_mixer_enum(struct snd_kcontrol *kcontrol,
741                             struct snd_ctl_elem_info *uinfo)
742 {
743         static const char * const texts1[] = {
744                 "Mic1", "Mic2"
745         };
746         static const char * const texts2[] = {
747                 "Mix", "Mic"
748         };
749         static const char * const texts3[] = {
750                 "Mic", "CD", "Video", "Aux",
751                 "Line", "Mix", "Mix Mono", "Phone"
752         };
753         static const char * const texts4[] = {
754                 "pre 3D", "post 3D"
755         };
756         struct azf3328_mixer_reg reg;
757         const char * const *p = NULL;
758
759         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
760         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
761         uinfo->count = (reg.reg == IDX_MIXER_REC_SELECT) ? 2 : 1;
762         uinfo->value.enumerated.items = reg.enum_c;
763         if (uinfo->value.enumerated.item > reg.enum_c - 1U)
764                 uinfo->value.enumerated.item = reg.enum_c - 1U;
765         if (reg.reg == IDX_MIXER_ADVCTL2) {
766                 switch(reg.lchan_shift) {
767                 case 8: /* modem out sel */
768                         p = texts1;
769                         break;
770                 case 9: /* mono sel source */
771                         p = texts2;
772                         break;
773                 case 15: /* PCM Out Path */
774                         p = texts4;
775                         break;
776                 }
777         } else
778         if (reg.reg == IDX_MIXER_REC_SELECT)
779                 p = texts3;
780
781         strcpy(uinfo->value.enumerated.name, p[uinfo->value.enumerated.item]);
782         return 0;
783 }
784
785 static int
786 snd_azf3328_get_mixer_enum(struct snd_kcontrol *kcontrol,
787                            struct snd_ctl_elem_value *ucontrol)
788 {
789         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
790         struct azf3328_mixer_reg reg;
791         unsigned short val;
792
793         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
794         val = snd_azf3328_mixer_inw(chip, reg.reg);
795         if (reg.reg == IDX_MIXER_REC_SELECT) {
796                 ucontrol->value.enumerated.item[0] = (val >> 8) & (reg.enum_c - 1);
797                 ucontrol->value.enumerated.item[1] = (val >> 0) & (reg.enum_c - 1);
798         } else
799                 ucontrol->value.enumerated.item[0] = (val >> reg.lchan_shift) & (reg.enum_c - 1);
800
801         snd_azf3328_dbgmixer("get_enum: %02x is %04x -> %d|%d (shift %02d, enum_c %d)\n",
802                 reg.reg, val, ucontrol->value.enumerated.item[0], ucontrol->value.enumerated.item[1],
803                 reg.lchan_shift, reg.enum_c);
804         return 0;
805 }
806
807 static int
808 snd_azf3328_put_mixer_enum(struct snd_kcontrol *kcontrol,
809                            struct snd_ctl_elem_value *ucontrol)
810 {
811         struct snd_azf3328 *chip = snd_kcontrol_chip(kcontrol);
812         struct azf3328_mixer_reg reg;
813         u16 oreg, nreg, val;
814
815         snd_azf3328_mixer_reg_decode(&reg, kcontrol->private_value);
816         oreg = snd_azf3328_mixer_inw(chip, reg.reg);
817         val = oreg;
818         if (reg.reg == IDX_MIXER_REC_SELECT) {
819                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U ||
820                 ucontrol->value.enumerated.item[1] > reg.enum_c - 1U)
821                         return -EINVAL;
822                 val = (ucontrol->value.enumerated.item[0] << 8) |
823                       (ucontrol->value.enumerated.item[1] << 0);
824         } else {
825                 if (ucontrol->value.enumerated.item[0] > reg.enum_c - 1U)
826                         return -EINVAL;
827                 val &= ~((reg.enum_c - 1) << reg.lchan_shift);
828                 val |= (ucontrol->value.enumerated.item[0] << reg.lchan_shift);
829         }
830         snd_azf3328_mixer_outw(chip, reg.reg, val);
831         nreg = val;
832
833         snd_azf3328_dbgmixer("put_enum: %02x to %04x, oreg %04x\n", reg.reg, val, oreg);
834         return (nreg != oreg);
835 }
836
837 static struct snd_kcontrol_new snd_azf3328_mixer_controls[] __devinitdata = {
838         AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
839         AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
840         AZF3328_MIXER_SWITCH("PCM Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),
841         AZF3328_MIXER_VOL_STEREO("PCM Playback Volume",
842                                         IDX_MIXER_WAVEOUT, 0x1f, 1),
843         AZF3328_MIXER_SWITCH("PCM 3D Bypass Playback Switch",
844                                         IDX_MIXER_ADVCTL2, 7, 1),
845         AZF3328_MIXER_SWITCH("FM Playback Switch", IDX_MIXER_FMSYNTH, 15, 1),
846         AZF3328_MIXER_VOL_STEREO("FM Playback Volume", IDX_MIXER_FMSYNTH, 0x1f, 1),
847         AZF3328_MIXER_SWITCH("CD Playback Switch", IDX_MIXER_CDAUDIO, 15, 1),
848         AZF3328_MIXER_VOL_STEREO("CD Playback Volume", IDX_MIXER_CDAUDIO, 0x1f, 1),
849         AZF3328_MIXER_SWITCH("Capture Switch", IDX_MIXER_REC_VOLUME, 15, 1),
850         AZF3328_MIXER_VOL_STEREO("Capture Volume", IDX_MIXER_REC_VOLUME, 0x0f, 0),
851         AZF3328_MIXER_ENUM("Capture Source", IDX_MIXER_REC_SELECT, 8, 0),
852         AZF3328_MIXER_SWITCH("Mic Playback Switch", IDX_MIXER_MIC, 15, 1),
853         AZF3328_MIXER_VOL_MONO("Mic Playback Volume", IDX_MIXER_MIC, 0x1f, 1),
854         AZF3328_MIXER_SWITCH("Mic Boost (+20dB)", IDX_MIXER_MIC, 6, 0),
855         AZF3328_MIXER_SWITCH("Line Playback Switch", IDX_MIXER_LINEIN, 15, 1),
856         AZF3328_MIXER_VOL_STEREO("Line Playback Volume", IDX_MIXER_LINEIN, 0x1f, 1),
857         AZF3328_MIXER_SWITCH("Beep Playback Switch", IDX_MIXER_PCBEEP, 15, 1),
858         AZF3328_MIXER_VOL_SPECIAL("Beep Playback Volume", IDX_MIXER_PCBEEP, 0x0f, 1, 1),
859         AZF3328_MIXER_SWITCH("Video Playback Switch", IDX_MIXER_VIDEO, 15, 1),
860         AZF3328_MIXER_VOL_STEREO("Video Playback Volume", IDX_MIXER_VIDEO, 0x1f, 1),
861         AZF3328_MIXER_SWITCH("Aux Playback Switch", IDX_MIXER_AUX, 15, 1),
862         AZF3328_MIXER_VOL_STEREO("Aux Playback Volume", IDX_MIXER_AUX, 0x1f, 1),
863         AZF3328_MIXER_SWITCH("Modem Playback Switch", IDX_MIXER_MODEMOUT, 15, 1),
864         AZF3328_MIXER_VOL_MONO("Modem Playback Volume", IDX_MIXER_MODEMOUT, 0x1f, 1),
865         AZF3328_MIXER_SWITCH("Modem Capture Switch", IDX_MIXER_MODEMIN, 15, 1),
866         AZF3328_MIXER_VOL_MONO("Modem Capture Volume", IDX_MIXER_MODEMIN, 0x1f, 1),
867         AZF3328_MIXER_ENUM("Mic Select", IDX_MIXER_ADVCTL2, 2, 8),
868         AZF3328_MIXER_ENUM("Mono Output Select", IDX_MIXER_ADVCTL2, 2, 9),
869         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! */
870         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Treble", IDX_MIXER_BASSTREBLE, 0x07, 1, 0),
871         AZF3328_MIXER_VOL_SPECIAL("Tone Control - Bass", IDX_MIXER_BASSTREBLE, 0x07, 9, 0),
872         AZF3328_MIXER_SWITCH("3D Control - Switch", IDX_MIXER_ADVCTL2, 13, 0),
873         AZF3328_MIXER_VOL_SPECIAL("3D Control - Width", IDX_MIXER_ADVCTL1, 0x07, 1, 0), /* "3D Width" */
874         AZF3328_MIXER_VOL_SPECIAL("3D Control - Depth", IDX_MIXER_ADVCTL1, 0x03, 8, 0), /* "Hifi 3D" */
875 #if MIXER_TESTING
876         AZF3328_MIXER_SWITCH("0", IDX_MIXER_ADVCTL2, 0, 0),
877         AZF3328_MIXER_SWITCH("1", IDX_MIXER_ADVCTL2, 1, 0),
878         AZF3328_MIXER_SWITCH("2", IDX_MIXER_ADVCTL2, 2, 0),
879         AZF3328_MIXER_SWITCH("3", IDX_MIXER_ADVCTL2, 3, 0),
880         AZF3328_MIXER_SWITCH("4", IDX_MIXER_ADVCTL2, 4, 0),
881         AZF3328_MIXER_SWITCH("5", IDX_MIXER_ADVCTL2, 5, 0),
882         AZF3328_MIXER_SWITCH("6", IDX_MIXER_ADVCTL2, 6, 0),
883         AZF3328_MIXER_SWITCH("7", IDX_MIXER_ADVCTL2, 7, 0),
884         AZF3328_MIXER_SWITCH("8", IDX_MIXER_ADVCTL2, 8, 0),
885         AZF3328_MIXER_SWITCH("9", IDX_MIXER_ADVCTL2, 9, 0),
886         AZF3328_MIXER_SWITCH("10", IDX_MIXER_ADVCTL2, 10, 0),
887         AZF3328_MIXER_SWITCH("11", IDX_MIXER_ADVCTL2, 11, 0),
888         AZF3328_MIXER_SWITCH("12", IDX_MIXER_ADVCTL2, 12, 0),
889         AZF3328_MIXER_SWITCH("13", IDX_MIXER_ADVCTL2, 13, 0),
890         AZF3328_MIXER_SWITCH("14", IDX_MIXER_ADVCTL2, 14, 0),
891         AZF3328_MIXER_SWITCH("15", IDX_MIXER_ADVCTL2, 15, 0),
892 #endif
893 };
894
895 static u16 __devinitdata snd_azf3328_init_values[][2] = {
896         { IDX_MIXER_PLAY_MASTER,        MIXER_MUTE_MASK|0x1f1f },
897         { IDX_MIXER_MODEMOUT,           MIXER_MUTE_MASK|0x1f1f },
898         { IDX_MIXER_BASSTREBLE,         0x0000 },
899         { IDX_MIXER_PCBEEP,             MIXER_MUTE_MASK|0x1f1f },
900         { IDX_MIXER_MODEMIN,            MIXER_MUTE_MASK|0x1f1f },
901         { IDX_MIXER_MIC,                MIXER_MUTE_MASK|0x001f },
902         { IDX_MIXER_LINEIN,             MIXER_MUTE_MASK|0x1f1f },
903         { IDX_MIXER_CDAUDIO,            MIXER_MUTE_MASK|0x1f1f },
904         { IDX_MIXER_VIDEO,              MIXER_MUTE_MASK|0x1f1f },
905         { IDX_MIXER_AUX,                MIXER_MUTE_MASK|0x1f1f },
906         { IDX_MIXER_WAVEOUT,            MIXER_MUTE_MASK|0x1f1f },
907         { IDX_MIXER_FMSYNTH,            MIXER_MUTE_MASK|0x1f1f },
908         { IDX_MIXER_REC_VOLUME,         MIXER_MUTE_MASK|0x0707 },
909 };
910
911 static int __devinit
912 snd_azf3328_mixer_new(struct snd_azf3328 *chip)
913 {
914         struct snd_card *card;
915         const struct snd_kcontrol_new *sw;
916         unsigned int idx;
917         int err;
918
919         snd_azf3328_dbgcallenter();
920         if (snd_BUG_ON(!chip || !chip->card))
921                 return -EINVAL;
922
923         card = chip->card;
924
925         /* mixer reset */
926         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
927
928         /* mute and zero volume channels */
929         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_init_values); ++idx) {
930                 snd_azf3328_mixer_outw(chip,
931                         snd_azf3328_init_values[idx][0],
932                         snd_azf3328_init_values[idx][1]);
933         }
934
935         /* add mixer controls */
936         sw = snd_azf3328_mixer_controls;
937         for (idx = 0; idx < ARRAY_SIZE(snd_azf3328_mixer_controls);
938                         ++idx, ++sw) {
939                 if ((err = snd_ctl_add(chip->card, snd_ctl_new1(sw, chip))) < 0)
940                         return err;
941         }
942         snd_component_add(card, "AZF3328 mixer");
943         strcpy(card->mixername, "AZF3328 mixer");
944
945         snd_azf3328_dbgcallleave();
946         return 0;
947 }
948
949 static int
950 snd_azf3328_hw_params(struct snd_pcm_substream *substream,
951                                  struct snd_pcm_hw_params *hw_params)
952 {
953         int res;
954         snd_azf3328_dbgcallenter();
955         res = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
956         snd_azf3328_dbgcallleave();
957         return res;
958 }
959
960 static int
961 snd_azf3328_hw_free(struct snd_pcm_substream *substream)
962 {
963         snd_azf3328_dbgcallenter();
964         snd_pcm_lib_free_pages(substream);
965         snd_azf3328_dbgcallleave();
966         return 0;
967 }
968
969 static void
970 snd_azf3328_codec_setfmt(struct snd_azf3328_codec_data *codec,
971                                enum azf_freq_t bitrate,
972                                unsigned int format_width,
973                                unsigned int channels
974 )
975 {
976         unsigned long flags;
977         u16 val = 0xff00;
978         u8 freq = 0;
979
980         snd_azf3328_dbgcallenter();
981         switch (bitrate) {
982 #define AZF_FMT_XLATE(in_freq, out_bits) \
983         do { \
984                 case AZF_FREQ_ ## in_freq: \
985                         freq = SOUNDFORMAT_FREQ_ ## out_bits; \
986                         break; \
987         } while (0);
988         AZF_FMT_XLATE(4000, SUSPECTED_4000)
989         AZF_FMT_XLATE(4800, SUSPECTED_4800)
990         /* the AZF3328 names it "5510" for some strange reason: */
991         AZF_FMT_XLATE(5512, 5510)
992         AZF_FMT_XLATE(6620, 6620)
993         AZF_FMT_XLATE(8000, 8000)
994         AZF_FMT_XLATE(9600, 9600)
995         AZF_FMT_XLATE(11025, 11025)
996         AZF_FMT_XLATE(13240, SUSPECTED_13240)
997         AZF_FMT_XLATE(16000, 16000)
998         AZF_FMT_XLATE(22050, 22050)
999         AZF_FMT_XLATE(32000, 32000)
1000         default:
1001                 snd_printk(KERN_WARNING "unknown bitrate %d, assuming 44.1kHz!\n", bitrate);
1002                 /* fall-through */
1003         AZF_FMT_XLATE(44100, 44100)
1004         AZF_FMT_XLATE(48000, 48000)
1005         AZF_FMT_XLATE(66200, SUSPECTED_66200)
1006 #undef AZF_FMT_XLATE
1007         }
1008         /* val = 0xff07; 3m27.993s (65301Hz; -> 64000Hz???) hmm, 66120, 65967, 66123 */
1009         /* val = 0xff09; 17m15.098s (13123,478Hz; -> 12000Hz???) hmm, 13237.2Hz? */
1010         /* val = 0xff0a; 47m30.599s (4764,891Hz; -> 4800Hz???) yup, 4803Hz */
1011         /* val = 0xff0c; 57m0.510s (4010,263Hz; -> 4000Hz???) yup, 4003Hz */
1012         /* val = 0xff05; 5m11.556s (... -> 44100Hz) */
1013         /* val = 0xff03; 10m21.529s (21872,463Hz; -> 22050Hz???) */
1014         /* val = 0xff0f; 20m41.883s (10937,993Hz; -> 11025Hz???) */
1015         /* val = 0xff0d; 41m23.135s (5523,600Hz; -> 5512Hz???) */
1016         /* val = 0xff0e; 28m30.777s (8017Hz; -> 8000Hz???) */
1017
1018         val |= freq;
1019
1020         if (channels == 2)
1021                 val |= SOUNDFORMAT_FLAG_2CHANNELS;
1022
1023         if (format_width == 16)
1024                 val |= SOUNDFORMAT_FLAG_16BIT;
1025
1026         spin_lock_irqsave(codec->lock, flags);
1027
1028         /* set bitrate/format */
1029         snd_azf3328_codec_outw(codec, IDX_IO_CODEC_SOUNDFORMAT, val);
1030
1031         /* changing the bitrate/format settings switches off the
1032          * audio output with an annoying click in case of 8/16bit format change
1033          * (maybe shutting down DAC/ADC?), thus immediately
1034          * do some tweaking to reenable it and get rid of the clicking
1035          * (FIXME: yes, it works, but what exactly am I doing here?? :)
1036          * FIXME: does this have some side effects for full-duplex
1037          * or other dramatic side effects? */
1038         /* do it for non-capture codecs only */
1039         if (codec->type != AZF_CODEC_CAPTURE)
1040                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1041                         snd_azf3328_codec_inw(codec, IDX_IO_CODEC_DMA_FLAGS) |
1042                         DMA_RUN_SOMETHING1 |
1043                         DMA_RUN_SOMETHING2 |
1044                         SOMETHING_ALMOST_ALWAYS_SET |
1045                         DMA_EPILOGUE_SOMETHING |
1046                         DMA_SOMETHING_ELSE
1047                 );
1048
1049         spin_unlock_irqrestore(codec->lock, flags);
1050         snd_azf3328_dbgcallleave();
1051 }
1052
1053 static inline void
1054 snd_azf3328_codec_setfmt_lowpower(struct snd_azf3328_codec_data *codec
1055 )
1056 {
1057         /* choose lowest frequency for low power consumption.
1058          * While this will cause louder noise due to rather coarse frequency,
1059          * it should never matter since output should always
1060          * get disabled properly when idle anyway. */
1061         snd_azf3328_codec_setfmt(codec, AZF_FREQ_4000, 8, 1);
1062 }
1063
1064 static void
1065 snd_azf3328_ctrl_reg_6AH_update(struct snd_azf3328 *chip,
1066                                         unsigned bitmask,
1067                                         bool enable
1068 )
1069 {
1070         bool do_mask = !enable;
1071         if (do_mask)
1072                 chip->shadow_reg_ctrl_6AH |= bitmask;
1073         else
1074                 chip->shadow_reg_ctrl_6AH &= ~bitmask;
1075         snd_azf3328_dbgcodec("6AH_update mask 0x%04x do_mask %d: val 0x%04x\n",
1076                         bitmask, do_mask, chip->shadow_reg_ctrl_6AH);
1077         snd_azf3328_ctrl_outw(chip, IDX_IO_6AH, chip->shadow_reg_ctrl_6AH);
1078 }
1079
1080 static inline void
1081 snd_azf3328_ctrl_enable_codecs(struct snd_azf3328 *chip, bool enable)
1082 {
1083         snd_azf3328_dbgcodec("codec_enable %d\n", enable);
1084         /* no idea what exactly is being done here, but I strongly assume it's
1085          * PM related */
1086         snd_azf3328_ctrl_reg_6AH_update(
1087                 chip, IO_6A_PAUSE_PLAYBACK_BIT8, enable
1088         );
1089 }
1090
1091 static void
1092 snd_azf3328_ctrl_codec_activity(struct snd_azf3328 *chip,
1093                                 enum snd_azf3328_codec_type codec_type,
1094                                 bool enable
1095 )
1096 {
1097         struct snd_azf3328_codec_data *codec = &chip->codecs[codec_type];
1098         bool need_change = (codec->running != enable);
1099
1100         snd_azf3328_dbgcodec(
1101                 "codec_activity: %s codec, enable %d, need_change %d\n",
1102                                 codec->name, enable, need_change
1103         );
1104         if (need_change) {
1105                 static const struct {
1106                         enum snd_azf3328_codec_type other1;
1107                         enum snd_azf3328_codec_type other2;
1108                 } peer_codecs[3] =
1109                         { { AZF_CODEC_CAPTURE, AZF_CODEC_I2S_OUT },
1110                           { AZF_CODEC_PLAYBACK, AZF_CODEC_I2S_OUT },
1111                           { AZF_CODEC_PLAYBACK, AZF_CODEC_CAPTURE } };
1112                 bool call_function;
1113
1114                 if (enable)
1115                         /* if enable codec, call enable_codecs func
1116                            to enable codec supply... */
1117                         call_function = 1;
1118                 else {
1119                         /* ...otherwise call enable_codecs func
1120                            (which globally shuts down operation of codecs)
1121                            only in case the other codecs are currently
1122                            not active either! */
1123                         call_function =
1124                                 ((!chip->codecs[peer_codecs[codec_type].other1]
1125                                         .running)
1126                              &&  (!chip->codecs[peer_codecs[codec_type].other2]
1127                                         .running));
1128                  }
1129                  if (call_function)
1130                         snd_azf3328_ctrl_enable_codecs(chip, enable);
1131
1132                 /* ...and adjust clock, too
1133                  * (reduce noise and power consumption) */
1134                 if (!enable)
1135                         snd_azf3328_codec_setfmt_lowpower(codec);
1136                 codec->running = enable;
1137         }
1138 }
1139
1140 static void
1141 snd_azf3328_codec_setdmaa(struct snd_azf3328_codec_data *codec,
1142                                 unsigned long addr,
1143                                 unsigned int period_bytes,
1144                                 unsigned int buffer_bytes
1145 )
1146 {
1147         snd_azf3328_dbgcallenter();
1148         WARN_ONCE(period_bytes & 1, "odd period length!?\n");
1149         WARN_ONCE(buffer_bytes != 2 * period_bytes,
1150                  "missed our input expectations! %u vs. %u\n",
1151                  buffer_bytes, period_bytes);
1152         if (!codec->running) {
1153                 /* AZF3328 uses a two buffer pointer DMA transfer approach */
1154
1155                 unsigned long flags;
1156
1157                 /* width 32bit (prevent overflow): */
1158                 u32 area_length;
1159                 struct codec_setup_io {
1160                         u32 dma_start_1;
1161                         u32 dma_start_2;
1162                         u32 dma_lengths;
1163                 } __attribute__((packed)) setup_io;
1164
1165                 area_length = buffer_bytes/2;
1166
1167                 setup_io.dma_start_1 = addr;
1168                 setup_io.dma_start_2 = addr+area_length;
1169
1170                 snd_azf3328_dbgcodec(
1171                         "setdma: buffers %08x[%u] / %08x[%u], %u, %u\n",
1172                                 setup_io.dma_start_1, area_length,
1173                                 setup_io.dma_start_2, area_length,
1174                                 period_bytes, buffer_bytes);
1175
1176                 /* Hmm, are we really supposed to decrement this by 1??
1177                    Most definitely certainly not: configuring full length does
1178                    work properly (i.e. likely better), and BTW we
1179                    violated possibly differing frame sizes with this...
1180
1181                 area_length--; |* max. index *|
1182                 */
1183
1184                 /* build combined I/O buffer length word */
1185                 setup_io.dma_lengths = (area_length << 16) | (area_length);
1186
1187                 spin_lock_irqsave(codec->lock, flags);
1188                 snd_azf3328_codec_outl_multi(
1189                         codec, IDX_IO_CODEC_DMA_START_1, &setup_io, 3
1190                 );
1191                 spin_unlock_irqrestore(codec->lock, flags);
1192         }
1193         snd_azf3328_dbgcallleave();
1194 }
1195
1196 static int
1197 snd_azf3328_pcm_prepare(struct snd_pcm_substream *substream)
1198 {
1199         struct snd_pcm_runtime *runtime = substream->runtime;
1200         struct snd_azf3328_codec_data *codec = runtime->private_data;
1201 #if 0
1202         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
1203         unsigned int count = snd_pcm_lib_period_bytes(substream);
1204 #endif
1205
1206         snd_azf3328_dbgcallenter();
1207
1208         codec->dma_base = runtime->dma_addr;
1209
1210 #if 0
1211         snd_azf3328_codec_setfmt(codec,
1212                 runtime->rate,
1213                 snd_pcm_format_width(runtime->format),
1214                 runtime->channels);
1215         snd_azf3328_codec_setdmaa(codec,
1216                                         runtime->dma_addr, count, size);
1217 #endif
1218         snd_azf3328_dbgcallleave();
1219         return 0;
1220 }
1221
1222 static int
1223 snd_azf3328_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1224 {
1225         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1226         struct snd_pcm_runtime *runtime = substream->runtime;
1227         struct snd_azf3328_codec_data *codec = runtime->private_data;
1228         int result = 0;
1229         u16 flags1;
1230         bool previously_muted = 0;
1231         bool is_main_mixer_playback_codec = (AZF_CODEC_PLAYBACK == codec->type);
1232
1233         snd_azf3328_dbgcalls("snd_azf3328_pcm_trigger cmd %d\n", cmd);
1234
1235         switch (cmd) {
1236         case SNDRV_PCM_TRIGGER_START:
1237                 snd_azf3328_dbgcodec("START %s\n", codec->name);
1238
1239                 if (is_main_mixer_playback_codec) {
1240                         /* mute WaveOut (avoid clicking during setup) */
1241                         previously_muted =
1242                                 snd_azf3328_mixer_set_mute(
1243                                                 chip, IDX_MIXER_WAVEOUT, 1
1244                                 );
1245                 }
1246
1247                 snd_azf3328_codec_setfmt(codec,
1248                         runtime->rate,
1249                         snd_pcm_format_width(runtime->format),
1250                         runtime->channels);
1251
1252                 spin_lock(codec->lock);
1253                 /* first, remember current value: */
1254                 flags1 = snd_azf3328_codec_inw(codec, IDX_IO_CODEC_DMA_FLAGS);
1255
1256                 /* stop transfer */
1257                 flags1 &= ~DMA_RESUME;
1258                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1259
1260                 /* FIXME: clear interrupts or what??? */
1261                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_IRQTYPE, 0xffff);
1262                 spin_unlock(codec->lock);
1263
1264                 snd_azf3328_codec_setdmaa(codec, runtime->dma_addr,
1265                         snd_pcm_lib_period_bytes(substream),
1266                         snd_pcm_lib_buffer_bytes(substream)
1267                 );
1268
1269                 spin_lock(codec->lock);
1270 #ifdef WIN9X
1271                 /* FIXME: enable playback/recording??? */
1272                 flags1 |= DMA_RUN_SOMETHING1 | DMA_RUN_SOMETHING2;
1273                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1274
1275                 /* start transfer again */
1276                 /* FIXME: what is this value (0x0010)??? */
1277                 flags1 |= DMA_RESUME | DMA_EPILOGUE_SOMETHING;
1278                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1279 #else /* NT4 */
1280                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1281                         0x0000);
1282                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1283                         DMA_RUN_SOMETHING1);
1284                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1285                         DMA_RUN_SOMETHING1 |
1286                         DMA_RUN_SOMETHING2);
1287                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1288                         DMA_RESUME |
1289                         SOMETHING_ALMOST_ALWAYS_SET |
1290                         DMA_EPILOGUE_SOMETHING |
1291                         DMA_SOMETHING_ELSE);
1292 #endif
1293                 spin_unlock(codec->lock);
1294                 snd_azf3328_ctrl_codec_activity(chip, codec->type, 1);
1295
1296                 if (is_main_mixer_playback_codec) {
1297                         /* now unmute WaveOut */
1298                         if (!previously_muted)
1299                                 snd_azf3328_mixer_set_mute(
1300                                                 chip, IDX_MIXER_WAVEOUT, 0
1301                                 );
1302                 }
1303
1304                 snd_azf3328_dbgcodec("STARTED %s\n", codec->name);
1305                 break;
1306         case SNDRV_PCM_TRIGGER_RESUME:
1307                 snd_azf3328_dbgcodec("RESUME %s\n", codec->name);
1308                 /* resume codec if we were active */
1309                 spin_lock(codec->lock);
1310                 if (codec->running)
1311                         snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1312                                 snd_azf3328_codec_inw(
1313                                         codec, IDX_IO_CODEC_DMA_FLAGS
1314                                 ) | DMA_RESUME
1315                         );
1316                 spin_unlock(codec->lock);
1317                 break;
1318         case SNDRV_PCM_TRIGGER_STOP:
1319                 snd_azf3328_dbgcodec("STOP %s\n", codec->name);
1320
1321                 if (is_main_mixer_playback_codec) {
1322                         /* mute WaveOut (avoid clicking during setup) */
1323                         previously_muted =
1324                                 snd_azf3328_mixer_set_mute(
1325                                                 chip, IDX_MIXER_WAVEOUT, 1
1326                                 );
1327                 }
1328
1329                 spin_lock(codec->lock);
1330                 /* first, remember current value: */
1331                 flags1 = snd_azf3328_codec_inw(codec, IDX_IO_CODEC_DMA_FLAGS);
1332
1333                 /* stop transfer */
1334                 flags1 &= ~DMA_RESUME;
1335                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1336
1337                 /* hmm, is this really required? we're resetting the same bit
1338                  * immediately thereafter... */
1339                 flags1 |= DMA_RUN_SOMETHING1;
1340                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1341
1342                 flags1 &= ~DMA_RUN_SOMETHING1;
1343                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS, flags1);
1344                 spin_unlock(codec->lock);
1345                 snd_azf3328_ctrl_codec_activity(chip, codec->type, 0);
1346
1347                 if (is_main_mixer_playback_codec) {
1348                         /* now unmute WaveOut */
1349                         if (!previously_muted)
1350                                 snd_azf3328_mixer_set_mute(
1351                                                 chip, IDX_MIXER_WAVEOUT, 0
1352                                 );
1353                 }
1354
1355                 snd_azf3328_dbgcodec("STOPPED %s\n", codec->name);
1356                 break;
1357         case SNDRV_PCM_TRIGGER_SUSPEND:
1358                 snd_azf3328_dbgcodec("SUSPEND %s\n", codec->name);
1359                 /* make sure codec is stopped */
1360                 snd_azf3328_codec_outw(codec, IDX_IO_CODEC_DMA_FLAGS,
1361                         snd_azf3328_codec_inw(
1362                                 codec, IDX_IO_CODEC_DMA_FLAGS
1363                         ) & ~DMA_RESUME
1364                 );
1365                 break;
1366         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1367                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_PUSH NIY!\n");
1368                 break;
1369         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1370                 snd_printk(KERN_ERR "FIXME: SNDRV_PCM_TRIGGER_PAUSE_RELEASE NIY!\n");
1371                 break;
1372         default:
1373                 snd_printk(KERN_ERR "FIXME: unknown trigger mode!\n");
1374                 return -EINVAL;
1375         }
1376
1377         snd_azf3328_dbgcallleave();
1378         return result;
1379 }
1380
1381 static snd_pcm_uframes_t
1382 snd_azf3328_pcm_pointer(struct snd_pcm_substream *substream
1383 )
1384 {
1385         const struct snd_azf3328_codec_data *codec =
1386                 substream->runtime->private_data;
1387         unsigned long result;
1388         snd_pcm_uframes_t frmres;
1389
1390         result = snd_azf3328_codec_inl(codec, IDX_IO_CODEC_DMA_CURRPOS);
1391
1392         /* calculate offset */
1393 #ifdef QUERY_HARDWARE
1394         result -= snd_azf3328_codec_inl(codec, IDX_IO_CODEC_DMA_START_1);
1395 #else
1396         result -= codec->dma_base;
1397 #endif
1398         frmres = bytes_to_frames( substream->runtime, result);
1399         snd_azf3328_dbgcodec("%08li %s @ 0x%8lx, frames %8ld\n",
1400                                 jiffies, codec->name, result, frmres);
1401         return frmres;
1402 }
1403
1404 /******************************************************************/
1405
1406 #ifdef SUPPORT_GAMEPORT
1407 static inline void
1408 snd_azf3328_gameport_irq_enable(struct snd_azf3328 *chip,
1409                                 bool enable
1410 )
1411 {
1412         snd_azf3328_io_reg_setb(
1413                 chip->game_io+IDX_GAME_HWCONFIG,
1414                 GAME_HWCFG_IRQ_ENABLE,
1415                 enable
1416         );
1417 }
1418
1419 static inline void
1420 snd_azf3328_gameport_legacy_address_enable(struct snd_azf3328 *chip,
1421                                            bool enable
1422 )
1423 {
1424         snd_azf3328_io_reg_setb(
1425                 chip->game_io+IDX_GAME_HWCONFIG,
1426                 GAME_HWCFG_LEGACY_ADDRESS_ENABLE,
1427                 enable
1428         );
1429 }
1430
1431 static void
1432 snd_azf3328_gameport_set_counter_frequency(struct snd_azf3328 *chip,
1433                                            unsigned int freq_cfg
1434 )
1435 {
1436         snd_azf3328_io_reg_setb(
1437                 chip->game_io+IDX_GAME_HWCONFIG,
1438                 0x02,
1439                 (freq_cfg & 1) != 0
1440         );
1441         snd_azf3328_io_reg_setb(
1442                 chip->game_io+IDX_GAME_HWCONFIG,
1443                 0x04,
1444                 (freq_cfg & 2) != 0
1445         );
1446 }
1447
1448 static inline void
1449 snd_azf3328_gameport_axis_circuit_enable(struct snd_azf3328 *chip, bool enable)
1450 {
1451         snd_azf3328_ctrl_reg_6AH_update(
1452                 chip, IO_6A_SOMETHING2_GAMEPORT, enable
1453         );
1454 }
1455
1456 static inline void
1457 snd_azf3328_gameport_interrupt(struct snd_azf3328 *chip)
1458 {
1459         /*
1460          * skeleton handler only
1461          * (we do not want axis reading in interrupt handler - too much load!)
1462          */
1463         snd_azf3328_dbggame("gameport irq\n");
1464
1465          /* this should ACK the gameport IRQ properly, hopefully. */
1466         snd_azf3328_game_inw(chip, IDX_GAME_AXIS_VALUE);
1467 }
1468
1469 static int
1470 snd_azf3328_gameport_open(struct gameport *gameport, int mode)
1471 {
1472         struct snd_azf3328 *chip = gameport_get_port_data(gameport);
1473         int res;
1474
1475         snd_azf3328_dbggame("gameport_open, mode %d\n", mode);
1476         switch (mode) {
1477         case GAMEPORT_MODE_COOKED:
1478         case GAMEPORT_MODE_RAW:
1479                 res = 0;
1480                 break;
1481         default:
1482                 res = -1;
1483                 break;
1484         }
1485
1486         snd_azf3328_gameport_set_counter_frequency(chip,
1487                                 GAME_HWCFG_ADC_COUNTER_FREQ_STD);
1488         snd_azf3328_gameport_axis_circuit_enable(chip, (res == 0));
1489
1490         return res;
1491 }
1492
1493 static void
1494 snd_azf3328_gameport_close(struct gameport *gameport)
1495 {
1496         struct snd_azf3328 *chip = gameport_get_port_data(gameport);
1497
1498         snd_azf3328_dbggame("gameport_close\n");
1499         snd_azf3328_gameport_set_counter_frequency(chip,
1500                                 GAME_HWCFG_ADC_COUNTER_FREQ_1_200);
1501         snd_azf3328_gameport_axis_circuit_enable(chip, 0);
1502 }
1503
1504 static int
1505 snd_azf3328_gameport_cooked_read(struct gameport *gameport,
1506                                  int *axes,
1507                                  int *buttons
1508 )
1509 {
1510         struct snd_azf3328 *chip = gameport_get_port_data(gameport);
1511         int i;
1512         u8 val;
1513         unsigned long flags;
1514
1515         if (snd_BUG_ON(!chip))
1516                 return 0;
1517
1518         spin_lock_irqsave(&chip->reg_lock, flags);
1519         val = snd_azf3328_game_inb(chip, IDX_GAME_LEGACY_COMPATIBLE);
1520         *buttons = (~(val) >> 4) & 0xf;
1521
1522         /* ok, this one is a bit dirty: cooked_read is being polled by a timer,
1523          * thus we're atomic and cannot actively wait in here
1524          * (which would be useful for us since it probably would be better
1525          * to trigger a measurement in here, then wait a short amount of
1526          * time until it's finished, then read values of _this_ measurement).
1527          *
1528          * Thus we simply resort to reading values if they're available already
1529          * and trigger the next measurement.
1530          */
1531
1532         val = snd_azf3328_game_inb(chip, IDX_GAME_AXES_CONFIG);
1533         if (val & GAME_AXES_SAMPLING_READY) {
1534                 for (i = 0; i < ARRAY_SIZE(chip->axes); ++i) {
1535                         /* configure the axis to read */
1536                         val = (i << 4) | 0x0f;
1537                         snd_azf3328_game_outb(chip, IDX_GAME_AXES_CONFIG, val);
1538
1539                         chip->axes[i] = snd_azf3328_game_inw(
1540                                                 chip, IDX_GAME_AXIS_VALUE
1541                                         );
1542                 }
1543         }
1544
1545         /* trigger next sampling of axes, to be evaluated the next time we
1546          * enter this function */
1547
1548         /* for some very, very strange reason we cannot enable
1549          * Measurement Ready monitoring for all axes here,
1550          * at least not when only one joystick connected */
1551         val = 0x03; /* we're able to monitor axes 1 and 2 only */
1552         snd_azf3328_game_outb(chip, IDX_GAME_AXES_CONFIG, val);
1553
1554         snd_azf3328_game_outw(chip, IDX_GAME_AXIS_VALUE, 0xffff);
1555         spin_unlock_irqrestore(&chip->reg_lock, flags);
1556
1557         for (i = 0; i < ARRAY_SIZE(chip->axes); i++) {
1558                 axes[i] = chip->axes[i];
1559                 if (axes[i] == 0xffff)
1560                         axes[i] = -1;
1561         }
1562
1563         snd_azf3328_dbggame("cooked_read: axes %d %d %d %d buttons %d\n",
1564                 axes[0], axes[1], axes[2], axes[3], *buttons
1565         );
1566
1567         return 0;
1568 }
1569
1570 static int __devinit
1571 snd_azf3328_gameport(struct snd_azf3328 *chip, int dev)
1572 {
1573         struct gameport *gp;
1574
1575         chip->gameport = gp = gameport_allocate_port();
1576         if (!gp) {
1577                 printk(KERN_ERR "azt3328: cannot alloc memory for gameport\n");
1578                 return -ENOMEM;
1579         }
1580
1581         gameport_set_name(gp, "AZF3328 Gameport");
1582         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1583         gameport_set_dev_parent(gp, &chip->pci->dev);
1584         gp->io = chip->game_io;
1585         gameport_set_port_data(gp, chip);
1586
1587         gp->open = snd_azf3328_gameport_open;
1588         gp->close = snd_azf3328_gameport_close;
1589         gp->fuzz = 16; /* seems ok */
1590         gp->cooked_read = snd_azf3328_gameport_cooked_read;
1591
1592         /* DISABLE legacy address: we don't need it! */
1593         snd_azf3328_gameport_legacy_address_enable(chip, 0);
1594
1595         snd_azf3328_gameport_set_counter_frequency(chip,
1596                                 GAME_HWCFG_ADC_COUNTER_FREQ_1_200);
1597         snd_azf3328_gameport_axis_circuit_enable(chip, 0);
1598
1599         gameport_register_port(chip->gameport);
1600
1601         return 0;
1602 }
1603
1604 static void
1605 snd_azf3328_gameport_free(struct snd_azf3328 *chip)
1606 {
1607         if (chip->gameport) {
1608                 gameport_unregister_port(chip->gameport);
1609                 chip->gameport = NULL;
1610         }
1611         snd_azf3328_gameport_irq_enable(chip, 0);
1612 }
1613 #else
1614 static inline int
1615 snd_azf3328_gameport(struct snd_azf3328 *chip, int dev) { return -ENOSYS; }
1616 static inline void
1617 snd_azf3328_gameport_free(struct snd_azf3328 *chip) { }
1618 static inline void
1619 snd_azf3328_gameport_interrupt(struct snd_azf3328 *chip)
1620 {
1621         printk(KERN_WARNING "huh, game port IRQ occurred!?\n");
1622 }
1623 #endif /* SUPPORT_GAMEPORT */
1624
1625 /******************************************************************/
1626
1627 static inline void
1628 snd_azf3328_irq_log_unknown_type(u8 which)
1629 {
1630         snd_azf3328_dbgcodec(
1631         "azt3328: unknown IRQ type (%x) occurred, please report!\n",
1632                 which
1633         );
1634 }
1635
1636 static inline void
1637 snd_azf3328_pcm_interrupt(const struct snd_azf3328_codec_data *first_codec,
1638                           u8 status
1639 )
1640 {
1641         u8 which;
1642         enum snd_azf3328_codec_type codec_type;
1643         const struct snd_azf3328_codec_data *codec = first_codec;
1644
1645         for (codec_type = AZF_CODEC_PLAYBACK;
1646                  codec_type <= AZF_CODEC_I2S_OUT;
1647                          ++codec_type, ++codec) {
1648
1649                 /* skip codec if there's no interrupt for it */
1650                 if (!(status & (1 << codec_type)))
1651                         continue;
1652
1653                 spin_lock(codec->lock);
1654                 which = snd_azf3328_codec_inb(codec, IDX_IO_CODEC_IRQTYPE);
1655                 /* ack all IRQ types immediately */
1656                 snd_azf3328_codec_outb(codec, IDX_IO_CODEC_IRQTYPE, which);
1657                 spin_unlock(codec->lock);
1658
1659                 if (codec->substream) {
1660                         snd_pcm_period_elapsed(codec->substream);
1661                         snd_azf3328_dbgcodec("%s period done (#%x), @ %x\n",
1662                                 codec->name,
1663                                 which,
1664                                 snd_azf3328_codec_inl(
1665                                         codec, IDX_IO_CODEC_DMA_CURRPOS
1666                                 )
1667                         );
1668                 } else
1669                         printk(KERN_WARNING "azt3328: irq handler problem!\n");
1670                 if (which & IRQ_SOMETHING)
1671                         snd_azf3328_irq_log_unknown_type(which);
1672         }
1673 }
1674
1675 static irqreturn_t
1676 snd_azf3328_interrupt(int irq, void *dev_id)
1677 {
1678         struct snd_azf3328 *chip = dev_id;
1679         u8 status;
1680 #if DEBUG_CODEC
1681         static unsigned long irq_count;
1682 #endif
1683
1684         status = snd_azf3328_ctrl_inb(chip, IDX_IO_IRQSTATUS);
1685
1686         /* fast path out, to ease interrupt sharing */
1687         if (!(status &
1688                 (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_I2S_OUT
1689                 |IRQ_GAMEPORT|IRQ_MPU401|IRQ_TIMER)
1690         ))
1691                 return IRQ_NONE; /* must be interrupt for another device */
1692
1693         snd_azf3328_dbgcodec(
1694                 "irq_count %ld! IDX_IO_IRQSTATUS %04x\n",
1695                         irq_count++ /* debug-only */,
1696                         status
1697         );
1698
1699         if (status & IRQ_TIMER) {
1700                 /* snd_azf3328_dbgcodec("timer %ld\n",
1701                         snd_azf3328_codec_inl(chip, IDX_IO_TIMER_VALUE)
1702                                 & TIMER_VALUE_MASK
1703                 ); */
1704                 if (chip->timer)
1705                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1706                 /* ACK timer */
1707                 spin_lock(&chip->reg_lock);
1708                 snd_azf3328_ctrl_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x07);
1709                 spin_unlock(&chip->reg_lock);
1710                 snd_azf3328_dbgcodec("azt3328: timer IRQ\n");
1711         }
1712
1713         if (status & (IRQ_PLAYBACK|IRQ_RECORDING|IRQ_I2S_OUT))
1714                 snd_azf3328_pcm_interrupt(chip->codecs, status);
1715
1716         if (status & IRQ_GAMEPORT)
1717                 snd_azf3328_gameport_interrupt(chip);
1718
1719         /* MPU401 has less critical IRQ requirements
1720          * than timer and playback/recording, right? */
1721         if (status & IRQ_MPU401) {
1722                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1723
1724                 /* hmm, do we have to ack the IRQ here somehow?
1725                  * If so, then I don't know how yet... */
1726                 snd_azf3328_dbgcodec("azt3328: MPU401 IRQ\n");
1727         }
1728         return IRQ_HANDLED;
1729 }
1730
1731 /*****************************************************************/
1732
1733 /* as long as we think we have identical snd_pcm_hardware parameters
1734    for playback, capture and i2s out, we can use the same physical struct
1735    since the struct is simply being copied into a member.
1736 */
1737 static const struct snd_pcm_hardware snd_azf3328_hardware =
1738 {
1739         /* FIXME!! Correct? */
1740         .info =                 SNDRV_PCM_INFO_MMAP |
1741                                 SNDRV_PCM_INFO_INTERLEAVED |
1742                                 SNDRV_PCM_INFO_MMAP_VALID,
1743         .formats =              SNDRV_PCM_FMTBIT_S8 |
1744                                 SNDRV_PCM_FMTBIT_U8 |
1745                                 SNDRV_PCM_FMTBIT_S16_LE |
1746                                 SNDRV_PCM_FMTBIT_U16_LE,
1747         .rates =                SNDRV_PCM_RATE_5512 |
1748                                 SNDRV_PCM_RATE_8000_48000 |
1749                                 SNDRV_PCM_RATE_KNOT,
1750         .rate_min =             AZF_FREQ_4000,
1751         .rate_max =             AZF_FREQ_66200,
1752         .channels_min =         1,
1753         .channels_max =         2,
1754         .buffer_bytes_max =     (64*1024),
1755         .period_bytes_min =     1024,
1756         .period_bytes_max =     (32*1024),
1757         /* We simply have two DMA areas (instead of a list of descriptors
1758            such as other cards); I believe that this is a fixed hardware
1759            attribute and there isn't much driver magic to be done to expand it.
1760            Thus indicate that we have at least and at most 2 periods. */
1761         .periods_min =          2,
1762         .periods_max =          2,
1763         /* FIXME: maybe that card actually has a FIFO?
1764          * Hmm, it seems newer revisions do have one, but we still don't know
1765          * its size... */
1766         .fifo_size =            0,
1767 };
1768
1769
1770 static unsigned int snd_azf3328_fixed_rates[] = {
1771         AZF_FREQ_4000,
1772         AZF_FREQ_4800,
1773         AZF_FREQ_5512,
1774         AZF_FREQ_6620,
1775         AZF_FREQ_8000,
1776         AZF_FREQ_9600,
1777         AZF_FREQ_11025,
1778         AZF_FREQ_13240,
1779         AZF_FREQ_16000,
1780         AZF_FREQ_22050,
1781         AZF_FREQ_32000,
1782         AZF_FREQ_44100,
1783         AZF_FREQ_48000,
1784         AZF_FREQ_66200
1785 };
1786
1787 static struct snd_pcm_hw_constraint_list snd_azf3328_hw_constraints_rates = {
1788         .count = ARRAY_SIZE(snd_azf3328_fixed_rates),
1789         .list = snd_azf3328_fixed_rates,
1790         .mask = 0,
1791 };
1792
1793 /*****************************************************************/
1794
1795 static int
1796 snd_azf3328_pcm_open(struct snd_pcm_substream *substream,
1797                      enum snd_azf3328_codec_type codec_type
1798 )
1799 {
1800         struct snd_azf3328 *chip = snd_pcm_substream_chip(substream);
1801         struct snd_pcm_runtime *runtime = substream->runtime;
1802         struct snd_azf3328_codec_data *codec = &chip->codecs[codec_type];
1803
1804         snd_azf3328_dbgcallenter();
1805         codec->substream = substream;
1806
1807         /* same parameters for all our codecs - at least we think so... */
1808         runtime->hw = snd_azf3328_hardware;
1809
1810         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1811                                    &snd_azf3328_hw_constraints_rates);
1812         runtime->private_data = codec;
1813         snd_azf3328_dbgcallleave();
1814         return 0;
1815 }
1816
1817 static int
1818 snd_azf3328_pcm_playback_open(struct snd_pcm_substream *substream)
1819 {
1820         return snd_azf3328_pcm_open(substream, AZF_CODEC_PLAYBACK);
1821 }
1822
1823 static int
1824 snd_azf3328_pcm_capture_open(struct snd_pcm_substream *substream)
1825 {
1826         return snd_azf3328_pcm_open(substream, AZF_CODEC_CAPTURE);
1827 }
1828
1829 static int
1830 snd_azf3328_pcm_i2s_out_open(struct snd_pcm_substream *substream)
1831 {
1832         return snd_azf3328_pcm_open(substream, AZF_CODEC_I2S_OUT);
1833 }
1834
1835 static int
1836 snd_azf3328_pcm_close(struct snd_pcm_substream *substream
1837 )
1838 {
1839         struct snd_azf3328_codec_data *codec =
1840                 substream->runtime->private_data;
1841
1842         snd_azf3328_dbgcallenter();
1843         codec->substream = NULL;
1844         snd_azf3328_dbgcallleave();
1845         return 0;
1846 }
1847
1848 /******************************************************************/
1849
1850 static struct snd_pcm_ops snd_azf3328_playback_ops = {
1851         .open =         snd_azf3328_pcm_playback_open,
1852         .close =        snd_azf3328_pcm_close,
1853         .ioctl =        snd_pcm_lib_ioctl,
1854         .hw_params =    snd_azf3328_hw_params,
1855         .hw_free =      snd_azf3328_hw_free,
1856         .prepare =      snd_azf3328_pcm_prepare,
1857         .trigger =      snd_azf3328_pcm_trigger,
1858         .pointer =      snd_azf3328_pcm_pointer
1859 };
1860
1861 static struct snd_pcm_ops snd_azf3328_capture_ops = {
1862         .open =         snd_azf3328_pcm_capture_open,
1863         .close =        snd_azf3328_pcm_close,
1864         .ioctl =        snd_pcm_lib_ioctl,
1865         .hw_params =    snd_azf3328_hw_params,
1866         .hw_free =      snd_azf3328_hw_free,
1867         .prepare =      snd_azf3328_pcm_prepare,
1868         .trigger =      snd_azf3328_pcm_trigger,
1869         .pointer =      snd_azf3328_pcm_pointer
1870 };
1871
1872 static struct snd_pcm_ops snd_azf3328_i2s_out_ops = {
1873         .open =         snd_azf3328_pcm_i2s_out_open,
1874         .close =        snd_azf3328_pcm_close,
1875         .ioctl =        snd_pcm_lib_ioctl,
1876         .hw_params =    snd_azf3328_hw_params,
1877         .hw_free =      snd_azf3328_hw_free,
1878         .prepare =      snd_azf3328_pcm_prepare,
1879         .trigger =      snd_azf3328_pcm_trigger,
1880         .pointer =      snd_azf3328_pcm_pointer
1881 };
1882
1883 static int __devinit
1884 snd_azf3328_pcm(struct snd_azf3328 *chip)
1885 {
1886 enum { AZF_PCMDEV_STD, AZF_PCMDEV_I2S_OUT, NUM_AZF_PCMDEVS }; /* pcm devices */
1887
1888         struct snd_pcm *pcm;
1889         int err;
1890
1891         snd_azf3328_dbgcallenter();
1892
1893         err = snd_pcm_new(chip->card, "AZF3328 DSP", AZF_PCMDEV_STD,
1894                                                                 1, 1, &pcm);
1895         if (err < 0)
1896                 return err;
1897         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1898                                                 &snd_azf3328_playback_ops);
1899         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1900                                                 &snd_azf3328_capture_ops);
1901
1902         pcm->private_data = chip;
1903         pcm->info_flags = 0;
1904         strcpy(pcm->name, chip->card->shortname);
1905         /* same pcm object for playback/capture (see snd_pcm_new() above) */
1906         chip->pcm[AZF_CODEC_PLAYBACK] = pcm;
1907         chip->pcm[AZF_CODEC_CAPTURE] = pcm;
1908
1909         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1910                                                 snd_dma_pci_data(chip->pci),
1911                                                         64*1024, 64*1024);
1912
1913         err = snd_pcm_new(chip->card, "AZF3328 I2S OUT", AZF_PCMDEV_I2S_OUT,
1914                                                                 1, 0, &pcm);
1915         if (err < 0)
1916                 return err;
1917         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1918                                                 &snd_azf3328_i2s_out_ops);
1919
1920         pcm->private_data = chip;
1921         pcm->info_flags = 0;
1922         strcpy(pcm->name, chip->card->shortname);
1923         chip->pcm[AZF_CODEC_I2S_OUT] = pcm;
1924
1925         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1926                                                 snd_dma_pci_data(chip->pci),
1927                                                         64*1024, 64*1024);
1928
1929         snd_azf3328_dbgcallleave();
1930         return 0;
1931 }
1932
1933 /******************************************************************/
1934
1935 /*** NOTE: the physical timer resolution actually is 1024000 ticks per second
1936  *** (probably derived from main crystal via a divider of 24),
1937  *** but announcing those attributes to user-space would make programs
1938  *** configure the timer to a 1 tick value, resulting in an absolutely fatal
1939  *** timer IRQ storm.
1940  *** Thus I chose to announce a down-scaled virtual timer to the outside and
1941  *** calculate real timer countdown values internally.
1942  *** (the scale factor can be set via module parameter "seqtimer_scaling").
1943  ***/
1944
1945 static int
1946 snd_azf3328_timer_start(struct snd_timer *timer)
1947 {
1948         struct snd_azf3328 *chip;
1949         unsigned long flags;
1950         unsigned int delay;
1951
1952         snd_azf3328_dbgcallenter();
1953         chip = snd_timer_chip(timer);
1954         delay = ((timer->sticks * seqtimer_scaling) - 1) & TIMER_VALUE_MASK;
1955         if (delay < 49) {
1956                 /* uhoh, that's not good, since user-space won't know about
1957                  * this timing tweak
1958                  * (we need to do it to avoid a lockup, though) */
1959
1960                 snd_azf3328_dbgtimer("delay was too low (%d)!\n", delay);
1961                 delay = 49; /* minimum time is 49 ticks */
1962         }
1963         snd_azf3328_dbgtimer("setting timer countdown value %d\n", delay);
1964         delay |= TIMER_COUNTDOWN_ENABLE | TIMER_IRQ_ENABLE;
1965         spin_lock_irqsave(&chip->reg_lock, flags);
1966         snd_azf3328_ctrl_outl(chip, IDX_IO_TIMER_VALUE, delay);
1967         spin_unlock_irqrestore(&chip->reg_lock, flags);
1968         snd_azf3328_dbgcallleave();
1969         return 0;
1970 }
1971
1972 static int
1973 snd_azf3328_timer_stop(struct snd_timer *timer)
1974 {
1975         struct snd_azf3328 *chip;
1976         unsigned long flags;
1977
1978         snd_azf3328_dbgcallenter();
1979         chip = snd_timer_chip(timer);
1980         spin_lock_irqsave(&chip->reg_lock, flags);
1981         /* disable timer countdown and interrupt */
1982         /* Hmm, should we write TIMER_IRQ_ACK here?
1983            YES indeed, otherwise a rogue timer operation - which prompts
1984            ALSA(?) to call repeated stop() in vain, but NOT start() -
1985            will never end (value 0x03 is kept shown in control byte).
1986            Simply manually poking 0x04 _once_ immediately successfully stops
1987            the hardware/ALSA interrupt activity. */
1988         snd_azf3328_ctrl_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x04);
1989         spin_unlock_irqrestore(&chip->reg_lock, flags);
1990         snd_azf3328_dbgcallleave();
1991         return 0;
1992 }
1993
1994
1995 static int
1996 snd_azf3328_timer_precise_resolution(struct snd_timer *timer,
1997                                                unsigned long *num, unsigned long *den)
1998 {
1999         snd_azf3328_dbgcallenter();
2000         *num = 1;
2001         *den = 1024000 / seqtimer_scaling;
2002         snd_azf3328_dbgcallleave();
2003         return 0;
2004 }
2005
2006 static struct snd_timer_hardware snd_azf3328_timer_hw = {
2007         .flags = SNDRV_TIMER_HW_AUTO,
2008         .resolution = 977, /* 1000000/1024000 = 0.9765625us */
2009         .ticks = 1024000, /* max tick count, defined by the value register; actually it's not 1024000, but 1048576, but we don't care */
2010         .start = snd_azf3328_timer_start,
2011         .stop = snd_azf3328_timer_stop,
2012         .precise_resolution = snd_azf3328_timer_precise_resolution,
2013 };
2014
2015 static int __devinit
2016 snd_azf3328_timer(struct snd_azf3328 *chip, int device)
2017 {
2018         struct snd_timer *timer = NULL;
2019         struct snd_timer_id tid;
2020         int err;
2021
2022         snd_azf3328_dbgcallenter();
2023         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
2024         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
2025         tid.card = chip->card->number;
2026         tid.device = device;
2027         tid.subdevice = 0;
2028
2029         snd_azf3328_timer_hw.resolution *= seqtimer_scaling;
2030         snd_azf3328_timer_hw.ticks /= seqtimer_scaling;
2031
2032         err = snd_timer_new(chip->card, "AZF3328", &tid, &timer);
2033         if (err < 0)
2034                 goto out;
2035
2036         strcpy(timer->name, "AZF3328 timer");
2037         timer->private_data = chip;
2038         timer->hw = snd_azf3328_timer_hw;
2039
2040         chip->timer = timer;
2041
2042         snd_azf3328_timer_stop(timer);
2043
2044         err = 0;
2045
2046 out:
2047         snd_azf3328_dbgcallleave();
2048         return err;
2049 }
2050
2051 /******************************************************************/
2052
2053 static int
2054 snd_azf3328_free(struct snd_azf3328 *chip)
2055 {
2056         if (chip->irq < 0)
2057                 goto __end_hw;
2058
2059         /* reset (close) mixer:
2060          * first mute master volume, then reset
2061          */
2062         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1);
2063         snd_azf3328_mixer_outw(chip, IDX_MIXER_RESET, 0x0000);
2064
2065         snd_azf3328_timer_stop(chip->timer);
2066         snd_azf3328_gameport_free(chip);
2067
2068         if (chip->irq >= 0)
2069                 synchronize_irq(chip->irq);
2070 __end_hw:
2071         if (chip->irq >= 0)
2072                 free_irq(chip->irq, chip);
2073         pci_release_regions(chip->pci);
2074         pci_disable_device(chip->pci);
2075
2076         kfree(chip);
2077         return 0;
2078 }
2079
2080 static int
2081 snd_azf3328_dev_free(struct snd_device *device)
2082 {
2083         struct snd_azf3328 *chip = device->device_data;
2084         return snd_azf3328_free(chip);
2085 }
2086
2087 #if 0
2088 /* check whether a bit can be modified */
2089 static void
2090 snd_azf3328_test_bit(unsigned unsigned reg, int bit)
2091 {
2092         unsigned char val, valoff, valon;
2093
2094         val = inb(reg);
2095
2096         outb(val & ~(1 << bit), reg);
2097         valoff = inb(reg);
2098
2099         outb(val|(1 << bit), reg);
2100         valon = inb(reg);
2101
2102         outb(val, reg);
2103
2104         printk(KERN_DEBUG "reg %04x bit %d: %02x %02x %02x\n",
2105                                 reg, bit, val, valoff, valon
2106         );
2107 }
2108 #endif
2109
2110 static inline void
2111 snd_azf3328_debug_show_ports(const struct snd_azf3328 *chip)
2112 {
2113 #if DEBUG_MISC
2114         u16 tmp;
2115
2116         snd_azf3328_dbgmisc(
2117                 "ctrl_io 0x%lx, game_io 0x%lx, mpu_io 0x%lx, "
2118                 "opl3_io 0x%lx, mixer_io 0x%lx, irq %d\n",
2119                 chip->ctrl_io, chip->game_io, chip->mpu_io,
2120                 chip->opl3_io, chip->mixer_io, chip->irq
2121         );
2122
2123         snd_azf3328_dbgmisc("game %02x %02x %02x %02x %02x %02x\n",
2124                 snd_azf3328_game_inb(chip, 0),
2125                 snd_azf3328_game_inb(chip, 1),
2126                 snd_azf3328_game_inb(chip, 2),
2127                 snd_azf3328_game_inb(chip, 3),
2128                 snd_azf3328_game_inb(chip, 4),
2129                 snd_azf3328_game_inb(chip, 5)
2130         );
2131
2132         for (tmp = 0; tmp < 0x07; tmp += 1)
2133                 snd_azf3328_dbgmisc("mpu_io 0x%04x\n", inb(chip->mpu_io + tmp));
2134
2135         for (tmp = 0; tmp <= 0x07; tmp += 1)
2136                 snd_azf3328_dbgmisc("0x%02x: game200 0x%04x, game208 0x%04x\n",
2137                         tmp, inb(0x200 + tmp), inb(0x208 + tmp));
2138
2139         for (tmp = 0; tmp <= 0x01; tmp += 1)
2140                 snd_azf3328_dbgmisc(
2141                         "0x%02x: mpu300 0x%04x, mpu310 0x%04x, mpu320 0x%04x, "
2142                         "mpu330 0x%04x opl388 0x%04x opl38c 0x%04x\n",
2143                                 tmp,
2144                                 inb(0x300 + tmp),
2145                                 inb(0x310 + tmp),
2146                                 inb(0x320 + tmp),
2147                                 inb(0x330 + tmp),
2148                                 inb(0x388 + tmp),
2149                                 inb(0x38c + tmp)
2150                 );
2151
2152         for (tmp = 0; tmp < AZF_IO_SIZE_CTRL; tmp += 2)
2153                 snd_azf3328_dbgmisc("ctrl 0x%02x: 0x%04x\n",
2154                         tmp, snd_azf3328_ctrl_inw(chip, tmp)
2155                 );
2156
2157         for (tmp = 0; tmp < AZF_IO_SIZE_MIXER; tmp += 2)
2158                 snd_azf3328_dbgmisc("mixer 0x%02x: 0x%04x\n",
2159                         tmp, snd_azf3328_mixer_inw(chip, tmp)
2160                 );
2161 #endif /* DEBUG_MISC */
2162 }
2163
2164 static int __devinit
2165 snd_azf3328_create(struct snd_card *card,
2166                    struct pci_dev *pci,
2167                    unsigned long device_type,
2168                    struct snd_azf3328 **rchip)
2169 {
2170         struct snd_azf3328 *chip;
2171         int err;
2172         static struct snd_device_ops ops = {
2173                 .dev_free =     snd_azf3328_dev_free,
2174         };
2175         u8 dma_init;
2176         enum snd_azf3328_codec_type codec_type;
2177         struct snd_azf3328_codec_data *codec_setup;
2178
2179         *rchip = NULL;
2180
2181         err = pci_enable_device(pci);
2182         if (err < 0)
2183                 return err;
2184
2185         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2186         if (chip == NULL) {
2187                 err = -ENOMEM;
2188                 goto out_err;
2189         }
2190         spin_lock_init(&chip->reg_lock);
2191         chip->card = card;
2192         chip->pci = pci;
2193         chip->irq = -1;
2194
2195         /* check if we can restrict PCI DMA transfers to 24 bits */
2196         if (pci_set_dma_mask(pci, DMA_BIT_MASK(24)) < 0 ||
2197             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(24)) < 0) {
2198                 snd_printk(KERN_ERR "architecture does not support "
2199                                         "24bit PCI busmaster DMA\n"
2200                 );
2201                 err = -ENXIO;
2202                 goto out_err;
2203         }
2204
2205         err = pci_request_regions(pci, "Aztech AZF3328");
2206         if (err < 0)
2207                 goto out_err;
2208
2209         chip->ctrl_io  = pci_resource_start(pci, 0);
2210         chip->game_io  = pci_resource_start(pci, 1);
2211         chip->mpu_io   = pci_resource_start(pci, 2);
2212         chip->opl3_io  = pci_resource_start(pci, 3);
2213         chip->mixer_io = pci_resource_start(pci, 4);
2214
2215         codec_setup = &chip->codecs[AZF_CODEC_PLAYBACK];
2216         codec_setup->io_base = chip->ctrl_io + AZF_IO_OFFS_CODEC_PLAYBACK;
2217         codec_setup->lock = &chip->reg_lock;
2218         codec_setup->type = AZF_CODEC_PLAYBACK;
2219         codec_setup->name = "PLAYBACK";
2220
2221         codec_setup = &chip->codecs[AZF_CODEC_CAPTURE];
2222         codec_setup->io_base = chip->ctrl_io + AZF_IO_OFFS_CODEC_CAPTURE;
2223         codec_setup->lock = &chip->reg_lock;
2224         codec_setup->type = AZF_CODEC_CAPTURE;
2225         codec_setup->name = "CAPTURE";
2226
2227         codec_setup = &chip->codecs[AZF_CODEC_I2S_OUT];
2228         codec_setup->io_base = chip->ctrl_io + AZF_IO_OFFS_CODEC_I2S_OUT;
2229         codec_setup->lock = &chip->reg_lock;
2230         codec_setup->type = AZF_CODEC_I2S_OUT;
2231         codec_setup->name = "I2S_OUT";
2232
2233         if (request_irq(pci->irq, snd_azf3328_interrupt,
2234                         IRQF_SHARED, card->shortname, chip)) {
2235                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2236                 err = -EBUSY;
2237                 goto out_err;
2238         }
2239         chip->irq = pci->irq;
2240         pci_set_master(pci);
2241         synchronize_irq(chip->irq);
2242
2243         snd_azf3328_debug_show_ports(chip);
2244
2245         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
2246         if (err < 0)
2247                 goto out_err;
2248
2249         /* create mixer interface & switches */
2250         err = snd_azf3328_mixer_new(chip);
2251         if (err < 0)
2252                 goto out_err;
2253
2254         /* standard codec init stuff */
2255                 /* default DMA init value */
2256         dma_init = DMA_RUN_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE;
2257
2258         for (codec_type = AZF_CODEC_PLAYBACK;
2259                 codec_type <= AZF_CODEC_I2S_OUT; ++codec_type) {
2260                 struct snd_azf3328_codec_data *codec =
2261                          &chip->codecs[codec_type];
2262
2263                 /* shutdown codecs to reduce power / noise */
2264                         /* have ...ctrl_codec_activity() act properly */
2265                 codec->running = 1;
2266                 snd_azf3328_ctrl_codec_activity(chip, codec_type, 0);
2267
2268                 spin_lock_irq(codec->lock);
2269                 snd_azf3328_codec_outb(codec, IDX_IO_CODEC_DMA_FLAGS,
2270                                                  dma_init);
2271                 spin_unlock_irq(codec->lock);
2272         }
2273
2274         snd_card_set_dev(card, &pci->dev);
2275
2276         *rchip = chip;
2277
2278         err = 0;
2279         goto out;
2280
2281 out_err:
2282         if (chip)
2283                 snd_azf3328_free(chip);
2284         pci_disable_device(pci);
2285
2286 out:
2287         return err;
2288 }
2289
2290 static int __devinit
2291 snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
2292 {
2293         static int dev;
2294         struct snd_card *card;
2295         struct snd_azf3328 *chip;
2296         struct snd_opl3 *opl3;
2297         int err;
2298
2299         snd_azf3328_dbgcallenter();
2300         if (dev >= SNDRV_CARDS)
2301                 return -ENODEV;
2302         if (!enable[dev]) {
2303                 dev++;
2304                 return -ENOENT;
2305         }
2306
2307         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
2308         if (err < 0)
2309                 return err;
2310
2311         strcpy(card->driver, "AZF3328");
2312         strcpy(card->shortname, "Aztech AZF3328 (PCI168)");
2313
2314         err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip);
2315         if (err < 0)
2316                 goto out_err;
2317
2318         card->private_data = chip;
2319
2320         /* chose to use MPU401_HW_AZT2320 ID instead of MPU401_HW_MPU401,
2321            since our hardware ought to be similar, thus use same ID. */
2322         err = snd_mpu401_uart_new(
2323                 card, 0,
2324                 MPU401_HW_AZT2320, chip->mpu_io, MPU401_INFO_INTEGRATED,
2325                 pci->irq, 0, &chip->rmidi
2326         );
2327         if (err < 0) {
2328                 snd_printk(KERN_ERR "azf3328: no MPU-401 device at 0x%lx?\n",
2329                                 chip->mpu_io
2330                 );
2331                 goto out_err;
2332         }
2333
2334         err = snd_azf3328_timer(chip, 0);
2335         if (err < 0)
2336                 goto out_err;
2337
2338         err = snd_azf3328_pcm(chip);
2339         if (err < 0)
2340                 goto out_err;
2341
2342         if (snd_opl3_create(card, chip->opl3_io, chip->opl3_io+2,
2343                             OPL3_HW_AUTO, 1, &opl3) < 0) {
2344                 snd_printk(KERN_ERR "azf3328: no OPL3 device at 0x%lx-0x%lx?\n",
2345                            chip->opl3_io, chip->opl3_io+2
2346                 );
2347         } else {
2348                 /* need to use IDs 1, 2 since ID 0 is snd_azf3328_timer above */
2349                 err = snd_opl3_timer_new(opl3, 1, 2);
2350                 if (err < 0)
2351                         goto out_err;
2352                 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
2353                 if (err < 0)
2354                         goto out_err;
2355         }
2356
2357         opl3->private_data = chip;
2358
2359         sprintf(card->longname, "%s at 0x%lx, irq %i",
2360                 card->shortname, chip->ctrl_io, chip->irq);
2361
2362         err = snd_card_register(card);
2363         if (err < 0)
2364                 goto out_err;
2365
2366 #ifdef MODULE
2367         printk(KERN_INFO
2368 "azt3328: Sound driver for Aztech AZF3328-based soundcards such as PCI168.\n"
2369 "azt3328: Hardware was completely undocumented, unfortunately.\n"
2370 "azt3328: Feel free to contact andi AT lisas.de for bug reports etc.!\n"
2371 "azt3328: User-scalable sequencer timer set to %dHz (1024000Hz / %d).\n",
2372         1024000 / seqtimer_scaling, seqtimer_scaling);
2373 #endif
2374
2375         snd_azf3328_gameport(chip, dev);
2376
2377         pci_set_drvdata(pci, card);
2378         dev++;
2379
2380         err = 0;
2381         goto out;
2382
2383 out_err:
2384         snd_printk(KERN_ERR "azf3328: something failed, exiting\n");
2385         snd_card_free(card);
2386
2387 out:
2388         snd_azf3328_dbgcallleave();
2389         return err;
2390 }
2391
2392 static void __devexit
2393 snd_azf3328_remove(struct pci_dev *pci)
2394 {
2395         snd_azf3328_dbgcallenter();
2396         snd_card_free(pci_get_drvdata(pci));
2397         pci_set_drvdata(pci, NULL);
2398         snd_azf3328_dbgcallleave();
2399 }
2400
2401 #ifdef CONFIG_PM
2402 static inline void
2403 snd_azf3328_suspend_regs(unsigned long io_addr, unsigned count, u32 *saved_regs)
2404 {
2405         unsigned reg;
2406
2407         for (reg = 0; reg < count; ++reg) {
2408                 *saved_regs = inl(io_addr);
2409                 snd_azf3328_dbgpm("suspend: io 0x%04lx: 0x%08x\n",
2410                         io_addr, *saved_regs);
2411                 ++saved_regs;
2412                 io_addr += sizeof(*saved_regs);
2413         }
2414 }
2415
2416 static int
2417 snd_azf3328_suspend(struct pci_dev *pci, pm_message_t state)
2418 {
2419         struct snd_card *card = pci_get_drvdata(pci);
2420         struct snd_azf3328 *chip = card->private_data;
2421         u16 *saved_regs_ctrl_u16;
2422
2423         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2424
2425         /* same pcm object for playback/capture */
2426         snd_pcm_suspend_all(chip->pcm[AZF_CODEC_PLAYBACK]);
2427         snd_pcm_suspend_all(chip->pcm[AZF_CODEC_I2S_OUT]);
2428
2429         snd_azf3328_suspend_regs(chip->mixer_io,
2430                 ARRAY_SIZE(chip->saved_regs_mixer), chip->saved_regs_mixer);
2431
2432         /* make sure to disable master volume etc. to prevent looping sound */
2433         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1);
2434         snd_azf3328_mixer_set_mute(chip, IDX_MIXER_WAVEOUT, 1);
2435
2436         snd_azf3328_suspend_regs(chip->ctrl_io,
2437                 ARRAY_SIZE(chip->saved_regs_ctrl), chip->saved_regs_ctrl);
2438
2439         /* manually store the one currently relevant write-only reg, too */
2440         saved_regs_ctrl_u16 = (u16 *)chip->saved_regs_ctrl;
2441         saved_regs_ctrl_u16[IDX_IO_6AH / 2] = chip->shadow_reg_ctrl_6AH;
2442
2443         snd_azf3328_suspend_regs(chip->game_io,
2444                 ARRAY_SIZE(chip->saved_regs_game), chip->saved_regs_game);
2445         snd_azf3328_suspend_regs(chip->mpu_io,
2446                 ARRAY_SIZE(chip->saved_regs_mpu), chip->saved_regs_mpu);
2447         snd_azf3328_suspend_regs(chip->opl3_io,
2448                 ARRAY_SIZE(chip->saved_regs_opl3), chip->saved_regs_opl3);
2449
2450         pci_disable_device(pci);
2451         pci_save_state(pci);
2452         pci_set_power_state(pci, pci_choose_state(pci, state));
2453         return 0;
2454 }
2455
2456 static inline void
2457 snd_azf3328_resume_regs(const u32 *saved_regs,
2458                         unsigned long io_addr,
2459                         unsigned count
2460 )
2461 {
2462         unsigned reg;
2463
2464         for (reg = 0; reg < count; ++reg) {
2465                 outl(*saved_regs, io_addr);
2466                 snd_azf3328_dbgpm("resume: io 0x%04lx: 0x%08x --> 0x%08x\n",
2467                         io_addr, *saved_regs, inl(io_addr));
2468                 ++saved_regs;
2469                 io_addr += sizeof(*saved_regs);
2470         }
2471 }
2472
2473 static int
2474 snd_azf3328_resume(struct pci_dev *pci)
2475 {
2476         struct snd_card *card = pci_get_drvdata(pci);
2477         const struct snd_azf3328 *chip = card->private_data;
2478
2479         pci_set_power_state(pci, PCI_D0);
2480         pci_restore_state(pci);
2481         if (pci_enable_device(pci) < 0) {
2482                 printk(KERN_ERR "azt3328: pci_enable_device failed, "
2483                        "disabling device\n");
2484                 snd_card_disconnect(card);
2485                 return -EIO;
2486         }
2487         pci_set_master(pci);
2488
2489         snd_azf3328_resume_regs(chip->saved_regs_game, chip->game_io,
2490                                         ARRAY_SIZE(chip->saved_regs_game));
2491         snd_azf3328_resume_regs(chip->saved_regs_mpu, chip->mpu_io,
2492                                         ARRAY_SIZE(chip->saved_regs_mpu));
2493         snd_azf3328_resume_regs(chip->saved_regs_opl3, chip->opl3_io,
2494                                         ARRAY_SIZE(chip->saved_regs_opl3));
2495
2496         snd_azf3328_resume_regs(chip->saved_regs_mixer, chip->mixer_io,
2497                                         ARRAY_SIZE(chip->saved_regs_mixer));
2498
2499         /* unfortunately with 32bit transfers, IDX_MIXER_PLAY_MASTER (0x02)
2500            and IDX_MIXER_RESET (offset 0x00) get touched at the same time,
2501            resulting in a mixer reset condition persisting until _after_
2502            master vol was restored. Thus master vol needs an extra restore. */
2503         outw(((u16 *)chip->saved_regs_mixer)[1], chip->mixer_io + 2);
2504
2505         snd_azf3328_resume_regs(chip->saved_regs_ctrl, chip->ctrl_io,
2506                                         ARRAY_SIZE(chip->saved_regs_ctrl));
2507
2508         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2509         return 0;
2510 }
2511 #endif /* CONFIG_PM */
2512
2513
2514 static struct pci_driver driver = {
2515         .name = "AZF3328",
2516         .id_table = snd_azf3328_ids,
2517         .probe = snd_azf3328_probe,
2518         .remove = __devexit_p(snd_azf3328_remove),
2519 #ifdef CONFIG_PM
2520         .suspend = snd_azf3328_suspend,
2521         .resume = snd_azf3328_resume,
2522 #endif
2523 };
2524
2525 static int __init
2526 alsa_card_azf3328_init(void)
2527 {
2528         int err;
2529         snd_azf3328_dbgcallenter();
2530         err = pci_register_driver(&driver);
2531         snd_azf3328_dbgcallleave();
2532         return err;
2533 }
2534
2535 static void __exit
2536 alsa_card_azf3328_exit(void)
2537 {
2538         snd_azf3328_dbgcallenter();
2539         pci_unregister_driver(&driver);
2540         snd_azf3328_dbgcallleave();
2541 }
2542
2543 module_init(alsa_card_azf3328_init)
2544 module_exit(alsa_card_azf3328_exit)