mm: Hold a file reference in madvise_remove
[linux-2.6.git] / sound / oss / waveartist.c
1 /*
2  * linux/sound/oss/waveartist.c
3  *
4  * The low level driver for the RWA010 Rockwell Wave Artist
5  * codec chip used in the Rebel.com NetWinder.
6  *
7  * Cleaned up and integrated into 2.1 by Russell King (rmk@arm.linux.org.uk)
8  * and Pat Beirne (patb@corel.ca)
9  *
10  *
11  * Copyright (C) by Rebel.com 1998-1999
12  *
13  * RWA010 specs received under NDA from Rockwell
14  *
15  * Copyright (C) by Hannu Savolainen 1993-1997
16  *
17  * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
18  * Version 2 (June 1991). See the "COPYING" file distributed with this software
19  * for more info.
20  *
21  * Changes:
22  * 11-10-2000   Bartlomiej Zolnierkiewicz <bkz@linux-ide.org>
23  *              Added __init to waveartist_init()
24  */
25
26 /* Debugging */
27 #define DEBUG_CMD       1
28 #define DEBUG_OUT       2
29 #define DEBUG_IN        4
30 #define DEBUG_INTR      8
31 #define DEBUG_MIXER     16
32 #define DEBUG_TRIGGER   32
33
34 #define debug_flg (0)
35
36 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/slab.h>
39 #include <linux/sched.h>
40 #include <linux/interrupt.h>
41 #include <linux/delay.h>
42 #include <linux/spinlock.h>
43 #include <linux/bitops.h>
44
45
46 #include "sound_config.h"
47 #include "waveartist.h"
48
49 #ifdef CONFIG_ARM
50 #include <mach/hardware.h>
51 #include <asm/mach-types.h>
52 #endif
53
54 #ifndef NO_DMA
55 #define NO_DMA  255
56 #endif
57
58 #define SUPPORTED_MIXER_DEVICES         (SOUND_MASK_SYNTH      |\
59                                          SOUND_MASK_PCM        |\
60                                          SOUND_MASK_LINE       |\
61                                          SOUND_MASK_MIC        |\
62                                          SOUND_MASK_LINE1      |\
63                                          SOUND_MASK_RECLEV     |\
64                                          SOUND_MASK_VOLUME     |\
65                                          SOUND_MASK_IMIX)
66
67 static unsigned short levels[SOUND_MIXER_NRDEVICES] = {
68         0x5555,         /* Master Volume         */
69         0x0000,         /* Bass                  */
70         0x0000,         /* Treble                */
71         0x2323,         /* Synth (FM)            */
72         0x4b4b,         /* PCM                   */
73         0x6464,         /* PC Speaker            */
74         0x0000,         /* Ext Line              */
75         0x0000,         /* Mic                   */
76         0x0000,         /* CD                    */
77         0x6464,         /* Recording monitor     */
78         0x0000,         /* SB PCM (ALT PCM)      */
79         0x0000,         /* Recording level       */
80         0x6464,         /* Input gain            */
81         0x6464,         /* Output gain           */
82         0x0000,         /* Line1 (Aux1)          */
83         0x0000,         /* Line2 (Aux2)          */
84         0x0000,         /* Line3 (Aux3)          */
85         0x0000,         /* Digital1              */
86         0x0000,         /* Digital2              */
87         0x0000,         /* Digital3              */
88         0x0000,         /* Phone In              */
89         0x6464,         /* Phone Out             */
90         0x0000,         /* Video                 */
91         0x0000,         /* Radio                 */
92         0x0000          /* Monitor               */
93 };
94
95 typedef struct {
96         struct address_info  hw;        /* hardware */
97         char            *chip_name;
98
99         int             xfer_count;
100         int             audio_mode;
101         int             open_mode;
102         int             audio_flags;
103         int             record_dev;
104         int             playback_dev;
105         int             dev_no;
106
107         /* Mixer parameters */
108         const struct waveartist_mixer_info *mix;
109
110         unsigned short  *levels;           /* cache of volume settings   */
111         int             recmask;           /* currently enabled recording device! */
112
113 #ifdef CONFIG_ARCH_NETWINDER
114         signed int      slider_vol;        /* hardware slider volume     */
115         unsigned int    handset_detect  :1;
116         unsigned int    telephone_detect:1;
117         unsigned int    no_autoselect   :1;/* handset/telephone autoselects a path */
118         unsigned int    spkr_mute_state :1;/* set by ioctl or autoselect */
119         unsigned int    line_mute_state :1;/* set by ioctl or autoselect */
120         unsigned int    use_slider      :1;/* use slider setting for o/p vol */
121 #endif
122 } wavnc_info;
123
124 /*
125  * This is the implementation specific mixer information.
126  */
127 struct waveartist_mixer_info {
128         unsigned int    supported_devs;    /* Supported devices */
129         unsigned int    recording_devs;    /* Recordable devies */
130         unsigned int    stereo_devs;       /* Stereo devices    */
131
132         unsigned int    (*select_input)(wavnc_info *, unsigned int,
133                                         unsigned char *, unsigned char *);
134         int             (*decode_mixer)(wavnc_info *, int,
135                                         unsigned char, unsigned char);
136         int             (*get_mixer)(wavnc_info *, int);
137 };
138
139 typedef struct wavnc_port_info {
140         int             open_mode;
141         int             speed;
142         int             channels;
143         int             audio_format;
144 } wavnc_port_info;
145
146 static int              nr_waveartist_devs;
147 static wavnc_info       adev_info[MAX_AUDIO_DEV];
148 static DEFINE_SPINLOCK(waveartist_lock);
149
150 #ifndef CONFIG_ARCH_NETWINDER
151 #define machine_is_netwinder() 0
152 #else
153 static struct timer_list vnc_timer;
154 static void vnc_configure_mixer(wavnc_info *devc, unsigned int input_mask);
155 static int vnc_private_ioctl(int dev, unsigned int cmd, int __user *arg);
156 static void vnc_slider_tick(unsigned long data);
157 #endif
158
159 static inline void
160 waveartist_set_ctlr(struct address_info *hw, unsigned char clear, unsigned char set)
161 {
162         unsigned int ctlr_port = hw->io_base + CTLR;
163
164         clear = ~clear & inb(ctlr_port);
165
166         outb(clear | set, ctlr_port);
167 }
168
169 /* Toggle IRQ acknowledge line
170  */
171 static inline void
172 waveartist_iack(wavnc_info *devc)
173 {
174         unsigned int ctlr_port = devc->hw.io_base + CTLR;
175         int old_ctlr;
176
177         old_ctlr = inb(ctlr_port) & ~IRQ_ACK;
178
179         outb(old_ctlr | IRQ_ACK, ctlr_port);
180         outb(old_ctlr, ctlr_port);
181 }
182
183 static inline int
184 waveartist_sleep(int timeout_ms)
185 {
186         unsigned int timeout = msecs_to_jiffies(timeout_ms*100);
187         return schedule_timeout_interruptible(timeout);
188 }
189
190 static int
191 waveartist_reset(wavnc_info *devc)
192 {
193         struct address_info *hw = &devc->hw;
194         unsigned int timeout, res = -1;
195
196         waveartist_set_ctlr(hw, -1, RESET);
197         waveartist_sleep(2);
198         waveartist_set_ctlr(hw, RESET, 0);
199
200         timeout = 500;
201         do {
202                 mdelay(2);
203
204                 if (inb(hw->io_base + STATR) & CMD_RF) {
205                         res = inw(hw->io_base + CMDR);
206                         if (res == 0x55aa)
207                                 break;
208                 }
209         } while (--timeout);
210
211         if (timeout == 0) {
212                 printk(KERN_WARNING "WaveArtist: reset timeout ");
213                 if (res != (unsigned int)-1)
214                         printk("(res=%04X)", res);
215                 printk("\n");
216                 return 1;
217         }
218         return 0;
219 }
220
221 /* Helper function to send and receive words
222  * from WaveArtist.  It handles all the handshaking
223  * and can send or receive multiple words.
224  */
225 static int
226 waveartist_cmd(wavnc_info *devc,
227                 int nr_cmd, unsigned int *cmd,
228                 int nr_resp, unsigned int *resp)
229 {
230         unsigned int io_base = devc->hw.io_base;
231         unsigned int timed_out = 0;
232         unsigned int i;
233
234         if (debug_flg & DEBUG_CMD) {
235                 printk("waveartist_cmd: cmd=");
236
237                 for (i = 0; i < nr_cmd; i++)
238                         printk("%04X ", cmd[i]);
239
240                 printk("\n");
241         }
242
243         if (inb(io_base + STATR) & CMD_RF) {
244                 int old_data;
245
246                 /* flush the port
247                  */
248
249                 old_data = inw(io_base + CMDR);
250
251                 if (debug_flg & DEBUG_CMD)
252                         printk("flushed %04X...", old_data);
253
254                 udelay(10);
255         }
256
257         for (i = 0; !timed_out && i < nr_cmd; i++) {
258                 int count;
259
260                 for (count = 5000; count; count--)
261                         if (inb(io_base + STATR) & CMD_WE)
262                                 break;
263
264                 if (!count)
265                         timed_out = 1;
266                 else
267                         outw(cmd[i], io_base + CMDR);
268         }
269
270         for (i = 0; !timed_out && i < nr_resp; i++) {
271                 int count;
272
273                 for (count = 5000; count; count--)
274                         if (inb(io_base + STATR) & CMD_RF)
275                                 break;
276
277                 if (!count)
278                         timed_out = 1;
279                 else
280                         resp[i] = inw(io_base + CMDR);
281         }
282
283         if (debug_flg & DEBUG_CMD) {
284                 if (!timed_out) {
285                         printk("waveartist_cmd: resp=");
286
287                         for (i = 0; i < nr_resp; i++)
288                                 printk("%04X ", resp[i]);
289
290                         printk("\n");
291                 } else
292                         printk("waveartist_cmd: timed out\n");
293         }
294
295         return timed_out ? 1 : 0;
296 }
297
298 /*
299  * Send one command word
300  */
301 static inline int
302 waveartist_cmd1(wavnc_info *devc, unsigned int cmd)
303 {
304         return waveartist_cmd(devc, 1, &cmd, 0, NULL);
305 }
306
307 /*
308  * Send one command, receive one word
309  */
310 static inline unsigned int
311 waveartist_cmd1_r(wavnc_info *devc, unsigned int cmd)
312 {
313         unsigned int ret;
314
315         waveartist_cmd(devc, 1, &cmd, 1, &ret);
316
317         return ret;
318 }
319
320 /*
321  * Send a double command, receive one
322  * word (and throw it away)
323  */
324 static inline int
325 waveartist_cmd2(wavnc_info *devc, unsigned int cmd, unsigned int arg)
326 {
327         unsigned int vals[2];
328
329         vals[0] = cmd;
330         vals[1] = arg;
331
332         return waveartist_cmd(devc, 2, vals, 1, vals);
333 }
334
335 /*
336  * Send a triple command
337  */
338 static inline int
339 waveartist_cmd3(wavnc_info *devc, unsigned int cmd,
340                 unsigned int arg1, unsigned int arg2)
341 {
342         unsigned int vals[3];
343
344         vals[0] = cmd;
345         vals[1] = arg1;
346         vals[2] = arg2;
347
348         return waveartist_cmd(devc, 3, vals, 0, NULL);
349 }
350
351 static int
352 waveartist_getrev(wavnc_info *devc, char *rev)
353 {
354         unsigned int temp[2];
355         unsigned int cmd = WACMD_GETREV;
356
357         waveartist_cmd(devc, 1, &cmd, 2, temp);
358
359         rev[0] = temp[0] >> 8;
360         rev[1] = temp[0] & 255;
361         rev[2] = '\0';
362
363         return temp[0];
364 }
365
366 static void waveartist_halt_output(int dev);
367 static void waveartist_halt_input(int dev);
368 static void waveartist_halt(int dev);
369 static void waveartist_trigger(int dev, int state);
370
371 static int
372 waveartist_open(int dev, int mode)
373 {
374         wavnc_info      *devc;
375         wavnc_port_info *portc;
376         unsigned long   flags;
377
378         if (dev < 0 || dev >= num_audiodevs)
379                 return -ENXIO;
380
381         devc  = (wavnc_info *) audio_devs[dev]->devc;
382         portc = (wavnc_port_info *) audio_devs[dev]->portc;
383
384         spin_lock_irqsave(&waveartist_lock, flags);
385         if (portc->open_mode || (devc->open_mode & mode)) {
386                 spin_unlock_irqrestore(&waveartist_lock, flags);
387                 return -EBUSY;
388         }
389
390         devc->audio_mode  = 0;
391         devc->open_mode  |= mode;
392         portc->open_mode  = mode;
393         waveartist_trigger(dev, 0);
394
395         if (mode & OPEN_READ)
396                 devc->record_dev = dev;
397         if (mode & OPEN_WRITE)
398                 devc->playback_dev = dev;
399         spin_unlock_irqrestore(&waveartist_lock, flags);
400
401         return 0;
402 }
403
404 static void
405 waveartist_close(int dev)
406 {
407         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
408         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
409         unsigned long   flags;
410
411         spin_lock_irqsave(&waveartist_lock, flags);
412
413         waveartist_halt(dev);
414
415         devc->audio_mode = 0;
416         devc->open_mode &= ~portc->open_mode;
417         portc->open_mode = 0;
418
419         spin_unlock_irqrestore(&waveartist_lock, flags);
420 }
421
422 static void
423 waveartist_output_block(int dev, unsigned long buf, int __count, int intrflag)
424 {
425         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
426         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
427         unsigned long   flags;
428         unsigned int    count = __count; 
429
430         if (debug_flg & DEBUG_OUT)
431                 printk("waveartist: output block, buf=0x%lx, count=0x%x...\n",
432                         buf, count);
433         /*
434          * 16 bit data
435          */
436         if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE))
437                 count >>= 1;
438
439         if (portc->channels > 1)
440                 count >>= 1;
441
442         count -= 1;
443
444         if (devc->audio_mode & PCM_ENABLE_OUTPUT &&
445             audio_devs[dev]->flags & DMA_AUTOMODE &&
446             intrflag &&
447             count == devc->xfer_count) {
448                 devc->audio_mode |= PCM_ENABLE_OUTPUT;
449                 return; /*
450                          * Auto DMA mode on. No need to react
451                          */
452         }
453
454         spin_lock_irqsave(&waveartist_lock, flags);
455
456         /*
457          * set sample count
458          */
459         waveartist_cmd2(devc, WACMD_OUTPUTSIZE, count);
460
461         devc->xfer_count = count;
462         devc->audio_mode |= PCM_ENABLE_OUTPUT;
463
464         spin_unlock_irqrestore(&waveartist_lock, flags);
465 }
466
467 static void
468 waveartist_start_input(int dev, unsigned long buf, int __count, int intrflag)
469 {
470         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
471         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
472         unsigned long   flags;
473         unsigned int    count = __count;
474
475         if (debug_flg & DEBUG_IN)
476                 printk("waveartist: start input, buf=0x%lx, count=0x%x...\n",
477                         buf, count);
478
479         if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE))  /* 16 bit data */
480                 count >>= 1;
481
482         if (portc->channels > 1)
483                 count >>= 1;
484
485         count -= 1;
486
487         if (devc->audio_mode & PCM_ENABLE_INPUT &&
488             audio_devs[dev]->flags & DMA_AUTOMODE &&
489             intrflag &&
490             count == devc->xfer_count) {
491                 devc->audio_mode |= PCM_ENABLE_INPUT;
492                 return; /*
493                          * Auto DMA mode on. No need to react
494                          */
495         }
496
497         spin_lock_irqsave(&waveartist_lock, flags);
498
499         /*
500          * set sample count
501          */
502         waveartist_cmd2(devc, WACMD_INPUTSIZE, count);
503
504         devc->xfer_count = count;
505         devc->audio_mode |= PCM_ENABLE_INPUT;
506
507         spin_unlock_irqrestore(&waveartist_lock, flags);
508 }
509
510 static int
511 waveartist_ioctl(int dev, unsigned int cmd, void __user * arg)
512 {
513         return -EINVAL;
514 }
515
516 static unsigned int
517 waveartist_get_speed(wavnc_port_info *portc)
518 {
519         unsigned int speed;
520
521         /*
522          * program the speed, channels, bits
523          */
524         if (portc->speed == 8000)
525                 speed = 0x2E71;
526         else if (portc->speed == 11025)
527                 speed = 0x4000;
528         else if (portc->speed == 22050)
529                 speed = 0x8000;
530         else if (portc->speed == 44100)
531                 speed = 0x0;
532         else {
533                 /*
534                  * non-standard - just calculate
535                  */
536                 speed = portc->speed << 16;
537
538                 speed = (speed / 44100) & 65535;
539         }
540
541         return speed;
542 }
543
544 static unsigned int
545 waveartist_get_bits(wavnc_port_info *portc)
546 {
547         unsigned int bits;
548
549         if (portc->audio_format == AFMT_S16_LE)
550                 bits = 1;
551         else if (portc->audio_format == AFMT_S8)
552                 bits = 0;
553         else
554                 bits = 2;       //default AFMT_U8
555
556         return bits;
557 }
558
559 static int
560 waveartist_prepare_for_input(int dev, int bsize, int bcount)
561 {
562         unsigned long   flags;
563         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
564         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
565         unsigned int    speed, bits;
566
567         if (devc->audio_mode)
568                 return 0;
569
570         speed = waveartist_get_speed(portc);
571         bits  = waveartist_get_bits(portc);
572
573         spin_lock_irqsave(&waveartist_lock, flags);
574
575         if (waveartist_cmd2(devc, WACMD_INPUTFORMAT, bits))
576                 printk(KERN_WARNING "waveartist: error setting the "
577                        "record format to %d\n", portc->audio_format);
578
579         if (waveartist_cmd2(devc, WACMD_INPUTCHANNELS, portc->channels))
580                 printk(KERN_WARNING "waveartist: error setting record "
581                        "to %d channels\n", portc->channels);
582
583         /*
584          * write cmd SetSampleSpeedTimeConstant
585          */
586         if (waveartist_cmd2(devc, WACMD_INPUTSPEED, speed))
587                 printk(KERN_WARNING "waveartist: error setting the record "
588                        "speed to %dHz.\n", portc->speed);
589
590         if (waveartist_cmd2(devc, WACMD_INPUTDMA, 1))
591                 printk(KERN_WARNING "waveartist: error setting the record "
592                        "data path to 0x%X\n", 1);
593
594         if (waveartist_cmd2(devc, WACMD_INPUTFORMAT, bits))
595                 printk(KERN_WARNING "waveartist: error setting the record "
596                        "format to %d\n", portc->audio_format);
597
598         devc->xfer_count = 0;
599         spin_unlock_irqrestore(&waveartist_lock, flags);
600         waveartist_halt_input(dev);
601
602         if (debug_flg & DEBUG_INTR) {
603                 printk("WA CTLR reg: 0x%02X.\n",
604                        inb(devc->hw.io_base + CTLR));
605                 printk("WA STAT reg: 0x%02X.\n",
606                        inb(devc->hw.io_base + STATR));
607                 printk("WA IRQS reg: 0x%02X.\n",
608                        inb(devc->hw.io_base + IRQSTAT));
609         }
610
611         return 0;
612 }
613
614 static int
615 waveartist_prepare_for_output(int dev, int bsize, int bcount)
616 {
617         unsigned long   flags;
618         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
619         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
620         unsigned int    speed, bits;
621
622         /*
623          * program the speed, channels, bits
624          */
625         speed = waveartist_get_speed(portc);
626         bits  = waveartist_get_bits(portc);
627
628         spin_lock_irqsave(&waveartist_lock, flags);
629
630         if (waveartist_cmd2(devc, WACMD_OUTPUTSPEED, speed) &&
631             waveartist_cmd2(devc, WACMD_OUTPUTSPEED, speed))
632                 printk(KERN_WARNING "waveartist: error setting the playback "
633                        "speed to %dHz.\n", portc->speed);
634
635         if (waveartist_cmd2(devc, WACMD_OUTPUTCHANNELS, portc->channels))
636                 printk(KERN_WARNING "waveartist: error setting the playback "
637                        "to %d channels\n", portc->channels);
638
639         if (waveartist_cmd2(devc, WACMD_OUTPUTDMA, 0))
640                 printk(KERN_WARNING "waveartist: error setting the playback "
641                        "data path to 0x%X\n", 0);
642
643         if (waveartist_cmd2(devc, WACMD_OUTPUTFORMAT, bits))
644                 printk(KERN_WARNING "waveartist: error setting the playback "
645                        "format to %d\n", portc->audio_format);
646
647         devc->xfer_count = 0;
648         spin_unlock_irqrestore(&waveartist_lock, flags);
649         waveartist_halt_output(dev);
650
651         if (debug_flg & DEBUG_INTR) {
652                 printk("WA CTLR reg: 0x%02X.\n",inb(devc->hw.io_base + CTLR));
653                 printk("WA STAT reg: 0x%02X.\n",inb(devc->hw.io_base + STATR));
654                 printk("WA IRQS reg: 0x%02X.\n",inb(devc->hw.io_base + IRQSTAT));
655         }
656
657         return 0;
658 }
659
660 static void
661 waveartist_halt(int dev)
662 {
663         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
664         wavnc_info      *devc;
665
666         if (portc->open_mode & OPEN_WRITE)
667                 waveartist_halt_output(dev);
668
669         if (portc->open_mode & OPEN_READ)
670                 waveartist_halt_input(dev);
671
672         devc = (wavnc_info *) audio_devs[dev]->devc;
673         devc->audio_mode = 0;
674 }
675
676 static void
677 waveartist_halt_input(int dev)
678 {
679         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
680         unsigned long   flags;
681
682         spin_lock_irqsave(&waveartist_lock, flags);
683
684         /*
685          * Stop capture
686          */
687         waveartist_cmd1(devc, WACMD_INPUTSTOP);
688
689         devc->audio_mode &= ~PCM_ENABLE_INPUT;
690
691         /*
692          * Clear interrupt by toggling
693          * the IRQ_ACK bit in CTRL
694          */
695         if (inb(devc->hw.io_base + STATR) & IRQ_REQ)
696                 waveartist_iack(devc);
697
698 //      devc->audio_mode &= ~PCM_ENABLE_INPUT;
699
700         spin_unlock_irqrestore(&waveartist_lock, flags);
701 }
702
703 static void
704 waveartist_halt_output(int dev)
705 {
706         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
707         unsigned long   flags;
708
709         spin_lock_irqsave(&waveartist_lock, flags);
710
711         waveartist_cmd1(devc, WACMD_OUTPUTSTOP);
712
713         devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
714
715         /*
716          * Clear interrupt by toggling
717          * the IRQ_ACK bit in CTRL
718          */
719         if (inb(devc->hw.io_base + STATR) & IRQ_REQ)
720                 waveartist_iack(devc);
721
722 //      devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
723
724         spin_unlock_irqrestore(&waveartist_lock, flags);
725 }
726
727 static void
728 waveartist_trigger(int dev, int state)
729 {
730         wavnc_info      *devc = (wavnc_info *) audio_devs[dev]->devc;
731         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
732         unsigned long   flags;
733
734         if (debug_flg & DEBUG_TRIGGER) {
735                 printk("wavnc: audio trigger ");
736                 if (state & PCM_ENABLE_INPUT)
737                         printk("in ");
738                 if (state & PCM_ENABLE_OUTPUT)
739                         printk("out");
740                 printk("\n");
741         }
742
743         spin_lock_irqsave(&waveartist_lock, flags);
744
745         state &= devc->audio_mode;
746
747         if (portc->open_mode & OPEN_READ &&
748             state & PCM_ENABLE_INPUT)
749                 /*
750                  * enable ADC Data Transfer to PC
751                  */
752                 waveartist_cmd1(devc, WACMD_INPUTSTART);
753
754         if (portc->open_mode & OPEN_WRITE &&
755             state & PCM_ENABLE_OUTPUT)
756                 /*
757                  * enable DAC data transfer from PC
758                  */
759                 waveartist_cmd1(devc, WACMD_OUTPUTSTART);
760
761         spin_unlock_irqrestore(&waveartist_lock, flags);
762 }
763
764 static int
765 waveartist_set_speed(int dev, int arg)
766 {
767         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
768
769         if (arg <= 0)
770                 return portc->speed;
771
772         if (arg < 5000)
773                 arg = 5000;
774         if (arg > 44100)
775                 arg = 44100;
776
777         portc->speed = arg;
778         return portc->speed;
779
780 }
781
782 static short
783 waveartist_set_channels(int dev, short arg)
784 {
785         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
786
787         if (arg != 1 && arg != 2)
788                 return portc->channels;
789
790         portc->channels = arg;
791         return arg;
792 }
793
794 static unsigned int
795 waveartist_set_bits(int dev, unsigned int arg)
796 {
797         wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
798
799         if (arg == 0)
800                 return portc->audio_format;
801
802         if ((arg != AFMT_U8) && (arg != AFMT_S16_LE) && (arg != AFMT_S8))
803                 arg = AFMT_U8;
804
805         portc->audio_format = arg;
806
807         return arg;
808 }
809
810 static struct audio_driver waveartist_audio_driver = {
811         .owner                  = THIS_MODULE,
812         .open                   = waveartist_open,
813         .close                  = waveartist_close,
814         .output_block           = waveartist_output_block,
815         .start_input            = waveartist_start_input,
816         .ioctl                  = waveartist_ioctl,
817         .prepare_for_input      = waveartist_prepare_for_input,
818         .prepare_for_output     = waveartist_prepare_for_output,
819         .halt_io                = waveartist_halt,
820         .halt_input             = waveartist_halt_input,
821         .halt_output            = waveartist_halt_output,
822         .trigger                = waveartist_trigger,
823         .set_speed              = waveartist_set_speed,
824         .set_bits               = waveartist_set_bits,
825         .set_channels           = waveartist_set_channels
826 };
827
828
829 static irqreturn_t
830 waveartist_intr(int irq, void *dev_id)
831 {
832         wavnc_info *devc = dev_id;
833         int        irqstatus, status;
834
835         spin_lock(&waveartist_lock);
836         irqstatus = inb(devc->hw.io_base + IRQSTAT);
837         status    = inb(devc->hw.io_base + STATR);
838
839         if (debug_flg & DEBUG_INTR)
840                 printk("waveartist_intr: stat=%02x, irqstat=%02x\n",
841                        status, irqstatus);
842
843         if (status & IRQ_REQ)   /* Clear interrupt */
844                 waveartist_iack(devc);
845         else
846                 printk(KERN_WARNING "waveartist: unexpected interrupt\n");
847
848         if (irqstatus & 0x01) {
849                 int temp = 1;
850
851                 /* PCM buffer done
852                  */
853                 if ((status & DMA0) && (devc->audio_mode & PCM_ENABLE_OUTPUT)) {
854                         DMAbuf_outputintr(devc->playback_dev, 1);
855                         temp = 0;
856                 }
857                 if ((status & DMA1) && (devc->audio_mode & PCM_ENABLE_INPUT)) {
858                         DMAbuf_inputintr(devc->record_dev);
859                         temp = 0;
860                 }
861                 if (temp)       //default:
862                         printk(KERN_WARNING "waveartist: Unknown interrupt\n");
863         }
864         if (irqstatus & 0x2)
865                 // We do not use SB mode natively...
866                 printk(KERN_WARNING "waveartist: Unexpected SB interrupt...\n");
867         spin_unlock(&waveartist_lock);
868         return IRQ_HANDLED;
869 }
870
871 /* -------------------------------------------------------------------------
872  * Mixer stuff
873  */
874 struct mix_ent {
875         unsigned char   reg_l;
876         unsigned char   reg_r;
877         unsigned char   shift;
878         unsigned char   max;
879 };
880
881 static const struct mix_ent mix_devs[SOUND_MIXER_NRDEVICES] = {
882         { 2, 6, 1,  7 }, /* SOUND_MIXER_VOLUME   */
883         { 0, 0, 0,  0 }, /* SOUND_MIXER_BASS     */
884         { 0, 0, 0,  0 }, /* SOUND_MIXER_TREBLE   */
885         { 0, 0, 0,  0 }, /* SOUND_MIXER_SYNTH    */
886         { 0, 0, 0,  0 }, /* SOUND_MIXER_PCM      */
887         { 0, 0, 0,  0 }, /* SOUND_MIXER_SPEAKER  */
888         { 0, 4, 6, 31 }, /* SOUND_MIXER_LINE     */
889         { 2, 6, 4,  3 }, /* SOUND_MIXER_MIC      */
890         { 0, 0, 0,  0 }, /* SOUND_MIXER_CD       */
891         { 0, 0, 0,  0 }, /* SOUND_MIXER_IMIX     */
892         { 0, 0, 0,  0 }, /* SOUND_MIXER_ALTPCM   */
893 #if 0
894         { 3, 7, 0, 10 }, /* SOUND_MIXER_RECLEV   */
895         { 0, 0, 0,  0 }, /* SOUND_MIXER_IGAIN    */
896 #else
897         { 0, 0, 0,  0 }, /* SOUND_MIXER_RECLEV   */
898         { 3, 7, 0,  7 }, /* SOUND_MIXER_IGAIN    */
899 #endif
900         { 0, 0, 0,  0 }, /* SOUND_MIXER_OGAIN    */
901         { 0, 4, 1, 31 }, /* SOUND_MIXER_LINE1    */
902         { 1, 5, 6, 31 }, /* SOUND_MIXER_LINE2    */
903         { 0, 0, 0,  0 }, /* SOUND_MIXER_LINE3    */
904         { 0, 0, 0,  0 }, /* SOUND_MIXER_DIGITAL1 */
905         { 0, 0, 0,  0 }, /* SOUND_MIXER_DIGITAL2 */
906         { 0, 0, 0,  0 }, /* SOUND_MIXER_DIGITAL3 */
907         { 0, 0, 0,  0 }, /* SOUND_MIXER_PHONEIN  */
908         { 0, 0, 0,  0 }, /* SOUND_MIXER_PHONEOUT */
909         { 0, 0, 0,  0 }, /* SOUND_MIXER_VIDEO    */
910         { 0, 0, 0,  0 }, /* SOUND_MIXER_RADIO    */
911         { 0, 0, 0,  0 }  /* SOUND_MIXER_MONITOR  */
912 };
913
914 static void
915 waveartist_mixer_update(wavnc_info *devc, int whichDev)
916 {
917         unsigned int lev_left, lev_right;
918
919         lev_left  = devc->levels[whichDev] & 0xff;
920         lev_right = devc->levels[whichDev] >> 8;
921
922         if (lev_left > 100)
923                 lev_left = 100;
924         if (lev_right > 100)
925                 lev_right = 100;
926
927 #define SCALE(lev,max)  ((lev) * (max) / 100)
928
929         if (machine_is_netwinder() && whichDev == SOUND_MIXER_PHONEOUT)
930                 whichDev = SOUND_MIXER_VOLUME;
931
932         if (mix_devs[whichDev].reg_l || mix_devs[whichDev].reg_r) {
933                 const struct mix_ent *mix = mix_devs + whichDev;
934                 unsigned int mask, left, right;
935
936                 mask = mix->max << mix->shift;
937                 lev_left  = SCALE(lev_left,  mix->max) << mix->shift;
938                 lev_right = SCALE(lev_right, mix->max) << mix->shift;
939
940                 /* read left setting */
941                 left  = waveartist_cmd1_r(devc, WACMD_GET_LEVEL |
942                                                mix->reg_l << 8);
943
944                 /* read right setting */
945                 right = waveartist_cmd1_r(devc, WACMD_GET_LEVEL |
946                                                 mix->reg_r << 8);
947
948                 left  = (left  & ~mask) | (lev_left  & mask);
949                 right = (right & ~mask) | (lev_right & mask);
950
951                 /* write left,right back */
952                 waveartist_cmd3(devc, WACMD_SET_MIXER, left, right);
953         } else {
954                 switch(whichDev) {
955                 case SOUND_MIXER_PCM:
956                         waveartist_cmd3(devc, WACMD_SET_LEVEL,
957                                         SCALE(lev_left,  32767),
958                                         SCALE(lev_right, 32767));
959                         break;
960
961                 case SOUND_MIXER_SYNTH:
962                         waveartist_cmd3(devc, 0x0100 | WACMD_SET_LEVEL,
963                                         SCALE(lev_left,  32767),
964                                         SCALE(lev_right, 32767));
965                         break;
966                 }
967         }
968 }
969
970 /*
971  * Set the ADC MUX to the specified values.  We do NOT do any
972  * checking of the values passed, since we assume that the
973  * relevant *_select_input function has done that for us.
974  */
975 static void
976 waveartist_set_adc_mux(wavnc_info *devc, char left_dev, char right_dev)
977 {
978         unsigned int reg_08, reg_09;
979
980         reg_08 = waveartist_cmd1_r(devc, WACMD_GET_LEVEL | 0x0800);
981         reg_09 = waveartist_cmd1_r(devc, WACMD_GET_LEVEL | 0x0900);
982
983         reg_08 = (reg_08 & ~0x3f) | right_dev << 3 | left_dev;
984
985         waveartist_cmd3(devc, WACMD_SET_MIXER, reg_08, reg_09);
986 }
987
988 /*
989  * Decode a recording mask into a mixer selection as follows:
990  *
991  *     OSS Source       WA Source       Actual source
992  *  SOUND_MASK_IMIX     Mixer           Mixer output (same as AD1848)
993  *  SOUND_MASK_LINE     Line            Line in
994  *  SOUND_MASK_LINE1    Aux 1           Aux 1 in
995  *  SOUND_MASK_LINE2    Aux 2           Aux 2 in
996  *  SOUND_MASK_MIC      Mic             Microphone
997  */
998 static unsigned int
999 waveartist_select_input(wavnc_info *devc, unsigned int recmask,
1000                         unsigned char *dev_l, unsigned char *dev_r)
1001 {
1002         unsigned int recdev = ADC_MUX_NONE;
1003
1004         if (recmask & SOUND_MASK_IMIX) {
1005                 recmask = SOUND_MASK_IMIX;
1006                 recdev = ADC_MUX_MIXER;
1007         } else if (recmask & SOUND_MASK_LINE2) {
1008                 recmask = SOUND_MASK_LINE2;
1009                 recdev = ADC_MUX_AUX2;
1010         } else if (recmask & SOUND_MASK_LINE1) {
1011                 recmask = SOUND_MASK_LINE1;
1012                 recdev = ADC_MUX_AUX1;
1013         } else if (recmask & SOUND_MASK_LINE) {
1014                 recmask = SOUND_MASK_LINE;
1015                 recdev = ADC_MUX_LINE;
1016         } else if (recmask & SOUND_MASK_MIC) {
1017                 recmask = SOUND_MASK_MIC;
1018                 recdev = ADC_MUX_MIC;
1019         }
1020
1021         *dev_l = *dev_r = recdev;
1022
1023         return recmask;
1024 }
1025
1026 static int
1027 waveartist_decode_mixer(wavnc_info *devc, int dev, unsigned char lev_l,
1028                         unsigned char lev_r)
1029 {
1030         switch (dev) {
1031         case SOUND_MIXER_VOLUME:
1032         case SOUND_MIXER_SYNTH:
1033         case SOUND_MIXER_PCM:
1034         case SOUND_MIXER_LINE:
1035         case SOUND_MIXER_MIC:
1036         case SOUND_MIXER_IGAIN:
1037         case SOUND_MIXER_LINE1:
1038         case SOUND_MIXER_LINE2:
1039                 devc->levels[dev] = lev_l | lev_r << 8;
1040                 break;
1041
1042         case SOUND_MIXER_IMIX:
1043                 break;
1044
1045         default:
1046                 dev = -EINVAL;
1047                 break;
1048         }
1049
1050         return dev;
1051 }
1052
1053 static int waveartist_get_mixer(wavnc_info *devc, int dev)
1054 {
1055         return devc->levels[dev];
1056 }
1057
1058 static const struct waveartist_mixer_info waveartist_mixer = {
1059         .supported_devs = SUPPORTED_MIXER_DEVICES | SOUND_MASK_IGAIN,
1060         .recording_devs = SOUND_MASK_LINE  | SOUND_MASK_MIC   |
1061                         SOUND_MASK_LINE1 | SOUND_MASK_LINE2 |
1062                         SOUND_MASK_IMIX,
1063         .stereo_devs    = (SUPPORTED_MIXER_DEVICES | SOUND_MASK_IGAIN) & ~
1064                         (SOUND_MASK_SPEAKER | SOUND_MASK_IMIX),
1065         .select_input   = waveartist_select_input,
1066         .decode_mixer   = waveartist_decode_mixer,
1067         .get_mixer      = waveartist_get_mixer,
1068 };
1069
1070 static void
1071 waveartist_set_recmask(wavnc_info *devc, unsigned int recmask)
1072 {
1073         unsigned char dev_l, dev_r;
1074
1075         recmask &= devc->mix->recording_devs;
1076
1077         /*
1078          * If more than one recording device selected,
1079          * disable the device that is currently in use.
1080          */
1081         if (hweight32(recmask) > 1)
1082                 recmask &= ~devc->recmask;
1083
1084         /*
1085          * Translate the recording device mask into
1086          * the ADC multiplexer settings.
1087          */
1088         devc->recmask = devc->mix->select_input(devc, recmask,
1089                                                 &dev_l, &dev_r);
1090
1091         waveartist_set_adc_mux(devc, dev_l, dev_r);
1092 }
1093
1094 static int
1095 waveartist_set_mixer(wavnc_info *devc, int dev, unsigned int level)
1096 {
1097         unsigned int lev_left  = level & 0x00ff;
1098         unsigned int lev_right = (level & 0xff00) >> 8;
1099
1100         if (lev_left > 100)
1101                 lev_left = 100;
1102         if (lev_right > 100)
1103                 lev_right = 100;
1104
1105         /*
1106          * Mono devices have their right volume forced to their
1107          * left volume.  (from ALSA driver OSS emulation).
1108          */
1109         if (!(devc->mix->stereo_devs & (1 << dev)))
1110                 lev_right = lev_left;
1111
1112         dev = devc->mix->decode_mixer(devc, dev, lev_left, lev_right);
1113
1114         if (dev >= 0)
1115                 waveartist_mixer_update(devc, dev);
1116
1117         return dev < 0 ? dev : 0;
1118 }
1119
1120 static int
1121 waveartist_mixer_ioctl(int dev, unsigned int cmd, void __user * arg)
1122 {
1123         wavnc_info *devc = (wavnc_info *)audio_devs[dev]->devc;
1124         int ret = 0, val, nr;
1125
1126         /*
1127          * All SOUND_MIXER_* ioctls use type 'M'
1128          */
1129         if (((cmd >> 8) & 255) != 'M')
1130                 return -ENOIOCTLCMD;
1131
1132 #ifdef CONFIG_ARCH_NETWINDER
1133         if (machine_is_netwinder()) {
1134                 ret = vnc_private_ioctl(dev, cmd, arg);
1135                 if (ret != -ENOIOCTLCMD)
1136                         return ret;
1137                 else
1138                         ret = 0;
1139         }
1140 #endif
1141
1142         nr = cmd & 0xff;
1143
1144         if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
1145                 if (get_user(val, (int __user *)arg))
1146                         return -EFAULT;
1147
1148                 switch (nr) {
1149                 case SOUND_MIXER_RECSRC:
1150                         waveartist_set_recmask(devc, val);
1151                         break;
1152
1153                 default:
1154                         ret = -EINVAL;
1155                         if (nr < SOUND_MIXER_NRDEVICES &&
1156                             devc->mix->supported_devs & (1 << nr))
1157                                 ret = waveartist_set_mixer(devc, nr, val);
1158                 }
1159         }
1160
1161         if (ret == 0 && _SIOC_DIR(cmd) & _SIOC_READ) {
1162                 ret = -EINVAL;
1163
1164                 switch (nr) {
1165                 case SOUND_MIXER_RECSRC:
1166                         ret = devc->recmask;
1167                         break;
1168
1169                 case SOUND_MIXER_DEVMASK:
1170                         ret = devc->mix->supported_devs;
1171                         break;
1172
1173                 case SOUND_MIXER_STEREODEVS:
1174                         ret = devc->mix->stereo_devs;
1175                         break;
1176
1177                 case SOUND_MIXER_RECMASK:
1178                         ret = devc->mix->recording_devs;
1179                         break;
1180
1181                 case SOUND_MIXER_CAPS:
1182                         ret = SOUND_CAP_EXCL_INPUT;
1183                         break;
1184
1185                 default:
1186                         if (nr < SOUND_MIXER_NRDEVICES)
1187                                 ret = devc->mix->get_mixer(devc, nr);
1188                         break;
1189                 }
1190
1191                 if (ret >= 0)
1192                         ret = put_user(ret, (int __user *)arg) ? -EFAULT : 0;
1193         }
1194
1195         return ret;
1196 }
1197
1198 static struct mixer_operations waveartist_mixer_operations =
1199 {
1200         .owner  = THIS_MODULE,
1201         .id     = "WaveArtist",
1202         .name   = "WaveArtist",
1203         .ioctl  = waveartist_mixer_ioctl
1204 };
1205
1206 static void
1207 waveartist_mixer_reset(wavnc_info *devc)
1208 {
1209         int i;
1210
1211         if (debug_flg & DEBUG_MIXER)
1212                 printk("%s: mixer_reset\n", devc->hw.name);
1213
1214         /*
1215          * reset mixer cmd
1216          */
1217         waveartist_cmd1(devc, WACMD_RST_MIXER);
1218
1219         /*
1220          * set input for ADC to come from 'quiet'
1221          * turn on default modes
1222          */
1223         waveartist_cmd3(devc, WACMD_SET_MIXER, 0x9800, 0xa836);
1224
1225         /*
1226          * set mixer input select to none, RX filter gains 0 dB
1227          */
1228         waveartist_cmd3(devc, WACMD_SET_MIXER, 0x4c00, 0x8c00);
1229
1230         /*
1231          * set bit 0 reg 2 to 1 - unmute MonoOut
1232          */
1233         waveartist_cmd3(devc, WACMD_SET_MIXER, 0x2801, 0x6800);
1234
1235         /* set default input device = internal mic
1236          * current recording device = none
1237          */
1238         waveartist_set_recmask(devc, 0);
1239
1240         for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
1241                 waveartist_mixer_update(devc, i);
1242 }
1243
1244 static int __init waveartist_init(wavnc_info *devc)
1245 {
1246         wavnc_port_info *portc;
1247         char rev[3], dev_name[64];
1248         int my_dev;
1249
1250         if (waveartist_reset(devc))
1251                 return -ENODEV;
1252
1253         sprintf(dev_name, "%s (%s", devc->hw.name, devc->chip_name);
1254
1255         if (waveartist_getrev(devc, rev)) {
1256                 strcat(dev_name, " rev. ");
1257                 strcat(dev_name, rev);
1258         }
1259         strcat(dev_name, ")");
1260
1261         conf_printf2(dev_name, devc->hw.io_base, devc->hw.irq,
1262                      devc->hw.dma, devc->hw.dma2);
1263
1264         portc = kzalloc(sizeof(wavnc_port_info), GFP_KERNEL);
1265         if (portc == NULL)
1266                 goto nomem;
1267
1268         my_dev = sound_install_audiodrv(AUDIO_DRIVER_VERSION, dev_name,
1269                         &waveartist_audio_driver, sizeof(struct audio_driver),
1270                         devc->audio_flags, AFMT_U8 | AFMT_S16_LE | AFMT_S8,
1271                         devc, devc->hw.dma, devc->hw.dma2);
1272
1273         if (my_dev < 0)
1274                 goto free;
1275
1276         audio_devs[my_dev]->portc = portc;
1277
1278         waveartist_mixer_reset(devc);
1279
1280         /*
1281          * clear any pending interrupt
1282          */
1283         waveartist_iack(devc);
1284
1285         if (request_irq(devc->hw.irq, waveartist_intr, 0, devc->hw.name, devc) < 0) {
1286                 printk(KERN_ERR "%s: IRQ %d in use\n",
1287                         devc->hw.name, devc->hw.irq);
1288                 goto uninstall;
1289         }
1290
1291         if (sound_alloc_dma(devc->hw.dma, devc->hw.name)) {
1292                 printk(KERN_ERR "%s: Can't allocate DMA%d\n",
1293                         devc->hw.name, devc->hw.dma);
1294                 goto uninstall_irq;
1295         }
1296
1297         if (devc->hw.dma != devc->hw.dma2 && devc->hw.dma2 != NO_DMA)
1298                 if (sound_alloc_dma(devc->hw.dma2, devc->hw.name)) {
1299                         printk(KERN_ERR "%s: can't allocate DMA%d\n",
1300                                 devc->hw.name, devc->hw.dma2);
1301                         goto uninstall_dma;
1302                 }
1303
1304         waveartist_set_ctlr(&devc->hw, 0, DMA1_IE | DMA0_IE);
1305
1306         audio_devs[my_dev]->mixer_dev =
1307                 sound_install_mixer(MIXER_DRIVER_VERSION,
1308                                 dev_name,
1309                                 &waveartist_mixer_operations,
1310                                 sizeof(struct mixer_operations),
1311                                 devc);
1312
1313         return my_dev;
1314
1315 uninstall_dma:
1316         sound_free_dma(devc->hw.dma);
1317
1318 uninstall_irq:
1319         free_irq(devc->hw.irq, devc);
1320
1321 uninstall:
1322         sound_unload_audiodev(my_dev);
1323
1324 free:
1325         kfree(portc);
1326
1327 nomem:
1328         return -1;
1329 }
1330
1331 static int __init probe_waveartist(struct address_info *hw_config)
1332 {
1333         wavnc_info *devc = &adev_info[nr_waveartist_devs];
1334
1335         if (nr_waveartist_devs >= MAX_AUDIO_DEV) {
1336                 printk(KERN_WARNING "waveartist: too many audio devices\n");
1337                 return 0;
1338         }
1339
1340         if (!request_region(hw_config->io_base, 15, hw_config->name))  {
1341                 printk(KERN_WARNING "WaveArtist: I/O port conflict\n");
1342                 return 0;
1343         }
1344
1345         if (hw_config->irq > 15 || hw_config->irq < 0) {
1346                 release_region(hw_config->io_base, 15);
1347                 printk(KERN_WARNING "WaveArtist: Bad IRQ %d\n",
1348                        hw_config->irq);
1349                 return 0;
1350         }
1351
1352         if (hw_config->dma != 3) {
1353                 release_region(hw_config->io_base, 15);
1354                 printk(KERN_WARNING "WaveArtist: Bad DMA %d\n",
1355                        hw_config->dma);
1356                 return 0;
1357         }
1358
1359         hw_config->name = "WaveArtist";
1360         devc->hw = *hw_config;
1361         devc->open_mode = 0;
1362         devc->chip_name = "RWA-010";
1363
1364         return 1;
1365 }
1366
1367 static void __init
1368 attach_waveartist(struct address_info *hw, const struct waveartist_mixer_info *mix)
1369 {
1370         wavnc_info *devc = &adev_info[nr_waveartist_devs];
1371
1372         /*
1373          * NOTE! If irq < 0, there is another driver which has allocated the
1374          *   IRQ so that this driver doesn't need to allocate/deallocate it.
1375          *   The actually used IRQ is ABS(irq).
1376          */
1377         devc->hw = *hw;
1378         devc->hw.irq = (hw->irq > 0) ? hw->irq : 0;
1379         devc->open_mode = 0;
1380         devc->playback_dev = 0;
1381         devc->record_dev = 0;
1382         devc->audio_flags = DMA_AUTOMODE;
1383         devc->levels = levels;
1384
1385         if (hw->dma != hw->dma2 && hw->dma2 != NO_DMA)
1386                 devc->audio_flags |= DMA_DUPLEX;
1387
1388         devc->mix = mix;
1389         devc->dev_no = waveartist_init(devc);
1390
1391         if (devc->dev_no < 0)
1392                 release_region(hw->io_base, 15);
1393         else {
1394 #ifdef CONFIG_ARCH_NETWINDER
1395                 if (machine_is_netwinder()) {
1396                         init_timer(&vnc_timer);
1397                         vnc_timer.function = vnc_slider_tick;
1398                         vnc_timer.expires  = jiffies;
1399                         vnc_timer.data     = nr_waveartist_devs;
1400                         add_timer(&vnc_timer);
1401
1402                         vnc_configure_mixer(devc, 0);
1403
1404                         devc->no_autoselect = 1;
1405                 }
1406 #endif
1407                 nr_waveartist_devs += 1;
1408         }
1409 }
1410
1411 static void __exit unload_waveartist(struct address_info *hw)
1412 {
1413         wavnc_info *devc = NULL;
1414         int i;
1415
1416         for (i = 0; i < nr_waveartist_devs; i++)
1417                 if (hw->io_base == adev_info[i].hw.io_base) {
1418                         devc = adev_info + i;
1419                         break;
1420                 }
1421
1422         if (devc != NULL) {
1423                 int mixer;
1424
1425 #ifdef CONFIG_ARCH_NETWINDER
1426                 if (machine_is_netwinder())
1427                         del_timer(&vnc_timer);
1428 #endif
1429
1430                 release_region(devc->hw.io_base, 15);
1431
1432                 waveartist_set_ctlr(&devc->hw, DMA1_IE|DMA0_IE, 0);
1433
1434                 if (devc->hw.irq >= 0)
1435                         free_irq(devc->hw.irq, devc);
1436
1437                 sound_free_dma(devc->hw.dma);
1438
1439                 if (devc->hw.dma != devc->hw.dma2 &&
1440                     devc->hw.dma2 != NO_DMA)
1441                         sound_free_dma(devc->hw.dma2);
1442
1443                 mixer = audio_devs[devc->dev_no]->mixer_dev;
1444
1445                 if (mixer >= 0)
1446                         sound_unload_mixerdev(mixer);
1447
1448                 if (devc->dev_no >= 0)
1449                         sound_unload_audiodev(devc->dev_no);
1450
1451                 nr_waveartist_devs -= 1;
1452
1453                 for (; i < nr_waveartist_devs; i++)
1454                         adev_info[i] = adev_info[i + 1];
1455         } else
1456                 printk(KERN_WARNING "waveartist: can't find device "
1457                        "to unload\n");
1458 }
1459
1460 #ifdef CONFIG_ARCH_NETWINDER
1461
1462 /*
1463  * Rebel.com Netwinder specifics...
1464  */
1465
1466 #include <asm/hardware/dec21285.h>
1467  
1468 #define VNC_TIMER_PERIOD (HZ/4) //check slider 4 times/sec
1469
1470 #define MIXER_PRIVATE3_RESET    0x53570000
1471 #define MIXER_PRIVATE3_READ     0x53570001
1472 #define MIXER_PRIVATE3_WRITE    0x53570002
1473
1474 #define VNC_MUTE_INTERNAL_SPKR  0x01    //the sw mute on/off control bit
1475 #define VNC_MUTE_LINE_OUT       0x10
1476 #define VNC_PHONE_DETECT        0x20
1477 #define VNC_HANDSET_DETECT      0x40
1478 #define VNC_DISABLE_AUTOSWITCH  0x80
1479
1480 static inline void
1481 vnc_mute_spkr(wavnc_info *devc)
1482 {
1483         unsigned long flags;
1484
1485         spin_lock_irqsave(&nw_gpio_lock, flags);
1486         nw_cpld_modify(CPLD_UNMUTE, devc->spkr_mute_state ? 0 : CPLD_UNMUTE);
1487         spin_unlock_irqrestore(&nw_gpio_lock, flags);
1488 }
1489
1490 static void
1491 vnc_mute_lout(wavnc_info *devc)
1492 {
1493         unsigned int left, right;
1494
1495         left  = waveartist_cmd1_r(devc, WACMD_GET_LEVEL);
1496         right = waveartist_cmd1_r(devc, WACMD_GET_LEVEL | 0x400);
1497
1498         if (devc->line_mute_state) {
1499                 left &= ~1;
1500                 right &= ~1;
1501         } else {
1502                 left |= 1;
1503                 right |= 1;
1504         }
1505         waveartist_cmd3(devc, WACMD_SET_MIXER, left, right);
1506                 
1507 }
1508
1509 static int
1510 vnc_volume_slider(wavnc_info *devc)
1511 {
1512         static signed int old_slider_volume;
1513         unsigned long flags;
1514         signed int volume = 255;
1515
1516         *CSR_TIMER1_LOAD = 0x00ffffff;
1517
1518         spin_lock_irqsave(&waveartist_lock, flags);
1519
1520         outb(0xFF, 0x201);
1521         *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV1;
1522
1523         while (volume && (inb(0x201) & 0x01))
1524                 volume--;
1525
1526         *CSR_TIMER1_CNTL = 0;
1527
1528         spin_unlock_irqrestore(&waveartist_lock,flags);
1529         
1530         volume = 0x00ffffff - *CSR_TIMER1_VALUE;
1531
1532
1533 #ifndef REVERSE
1534         volume = 150 - (volume >> 5);
1535 #else
1536         volume = (volume >> 6) - 25;
1537 #endif
1538
1539         if (volume < 0)
1540                 volume = 0;
1541
1542         if (volume > 100)
1543                 volume = 100;
1544
1545         /*
1546          * slider quite often reads +-8, so debounce this random noise
1547          */
1548         if (abs(volume - old_slider_volume) > 7) {
1549                 old_slider_volume = volume;
1550
1551                 if (debug_flg & DEBUG_MIXER)
1552                         printk(KERN_DEBUG "Slider volume: %d.\n", volume);
1553         }
1554
1555         return old_slider_volume;
1556 }
1557
1558 /*
1559  * Decode a recording mask into a mixer selection on the NetWinder
1560  * as follows:
1561  *
1562  *     OSS Source       WA Source       Actual source
1563  *  SOUND_MASK_IMIX     Mixer           Mixer output (same as AD1848)
1564  *  SOUND_MASK_LINE     Line            Line in
1565  *  SOUND_MASK_LINE1    Left Mic        Handset
1566  *  SOUND_MASK_PHONEIN  Left Aux        Telephone microphone
1567  *  SOUND_MASK_MIC      Right Mic       Builtin microphone
1568  */
1569 static unsigned int
1570 netwinder_select_input(wavnc_info *devc, unsigned int recmask,
1571                        unsigned char *dev_l, unsigned char *dev_r)
1572 {
1573         unsigned int recdev_l = ADC_MUX_NONE, recdev_r = ADC_MUX_NONE;
1574
1575         if (recmask & SOUND_MASK_IMIX) {
1576                 recmask = SOUND_MASK_IMIX;
1577                 recdev_l = ADC_MUX_MIXER;
1578                 recdev_r = ADC_MUX_MIXER;
1579         } else if (recmask & SOUND_MASK_LINE) {
1580                 recmask = SOUND_MASK_LINE;
1581                 recdev_l = ADC_MUX_LINE;
1582                 recdev_r = ADC_MUX_LINE;
1583         } else if (recmask & SOUND_MASK_LINE1) {
1584                 recmask = SOUND_MASK_LINE1;
1585                 waveartist_cmd1(devc, WACMD_SET_MONO); /* left */
1586                 recdev_l = ADC_MUX_MIC;
1587                 recdev_r = ADC_MUX_NONE;
1588         } else if (recmask & SOUND_MASK_PHONEIN) {
1589                 recmask = SOUND_MASK_PHONEIN;
1590                 waveartist_cmd1(devc, WACMD_SET_MONO); /* left */
1591                 recdev_l = ADC_MUX_AUX1;
1592                 recdev_r = ADC_MUX_NONE;
1593         } else if (recmask & SOUND_MASK_MIC) {
1594                 recmask = SOUND_MASK_MIC;
1595                 waveartist_cmd1(devc, WACMD_SET_MONO | 0x100);  /* right */
1596                 recdev_l = ADC_MUX_NONE;
1597                 recdev_r = ADC_MUX_MIC;
1598         }
1599
1600         *dev_l = recdev_l;
1601         *dev_r = recdev_r;
1602
1603         return recmask;
1604 }
1605
1606 static int
1607 netwinder_decode_mixer(wavnc_info *devc, int dev, unsigned char lev_l,
1608                        unsigned char lev_r)
1609 {
1610         switch (dev) {
1611         case SOUND_MIXER_VOLUME:
1612         case SOUND_MIXER_SYNTH:
1613         case SOUND_MIXER_PCM:
1614         case SOUND_MIXER_LINE:
1615         case SOUND_MIXER_IGAIN:
1616                 devc->levels[dev] = lev_l | lev_r << 8;
1617                 break;
1618
1619         case SOUND_MIXER_MIC:           /* right mic only */
1620                 devc->levels[SOUND_MIXER_MIC] &= 0xff;
1621                 devc->levels[SOUND_MIXER_MIC] |= lev_l << 8;
1622                 break;
1623
1624         case SOUND_MIXER_LINE1:         /* left mic only  */
1625                 devc->levels[SOUND_MIXER_MIC] &= 0xff00;
1626                 devc->levels[SOUND_MIXER_MIC] |= lev_l;
1627                 dev = SOUND_MIXER_MIC;
1628                 break;
1629
1630         case SOUND_MIXER_PHONEIN:       /* left aux only  */
1631                 devc->levels[SOUND_MIXER_LINE1] = lev_l;
1632                 dev = SOUND_MIXER_LINE1;
1633                 break;
1634
1635         case SOUND_MIXER_IMIX:
1636         case SOUND_MIXER_PHONEOUT:
1637                 break;
1638
1639         default:
1640                 dev = -EINVAL;
1641                 break;
1642         }
1643         return dev;
1644 }
1645
1646 static int netwinder_get_mixer(wavnc_info *devc, int dev)
1647 {
1648         int levels;
1649
1650         switch (dev) {
1651         case SOUND_MIXER_VOLUME:
1652         case SOUND_MIXER_SYNTH:
1653         case SOUND_MIXER_PCM:
1654         case SOUND_MIXER_LINE:
1655         case SOUND_MIXER_IGAIN:
1656                 levels = devc->levels[dev];
1657                 break;
1658
1659         case SOUND_MIXER_MIC:           /* builtin mic: right mic only */
1660                 levels = devc->levels[SOUND_MIXER_MIC] >> 8;
1661                 levels |= levels << 8;
1662                 break;
1663
1664         case SOUND_MIXER_LINE1:         /* handset mic: left mic only */
1665                 levels = devc->levels[SOUND_MIXER_MIC] & 0xff;
1666                 levels |= levels << 8;
1667                 break;
1668
1669         case SOUND_MIXER_PHONEIN:       /* phone mic: left aux1 only */
1670                 levels = devc->levels[SOUND_MIXER_LINE1] & 0xff;
1671                 levels |= levels << 8;
1672                 break;
1673
1674         default:
1675                 levels = 0;
1676         }
1677
1678         return levels;
1679 }
1680
1681 /*
1682  * Waveartist specific mixer information.
1683  */
1684 static const struct waveartist_mixer_info netwinder_mixer = {
1685         .supported_devs = SOUND_MASK_VOLUME  | SOUND_MASK_SYNTH   |
1686                         SOUND_MASK_PCM     | SOUND_MASK_SPEAKER |
1687                         SOUND_MASK_LINE    | SOUND_MASK_MIC     |
1688                         SOUND_MASK_IMIX    | SOUND_MASK_LINE1   |
1689                         SOUND_MASK_PHONEIN | SOUND_MASK_PHONEOUT|
1690                         SOUND_MASK_IGAIN,
1691
1692         .recording_devs = SOUND_MASK_LINE    | SOUND_MASK_MIC     |
1693                         SOUND_MASK_IMIX    | SOUND_MASK_LINE1   |
1694                         SOUND_MASK_PHONEIN,
1695
1696         .stereo_devs    = SOUND_MASK_VOLUME  | SOUND_MASK_SYNTH   |
1697                         SOUND_MASK_PCM     | SOUND_MASK_LINE    |
1698                         SOUND_MASK_IMIX    | SOUND_MASK_IGAIN,
1699
1700         .select_input   = netwinder_select_input,
1701         .decode_mixer   = netwinder_decode_mixer,
1702         .get_mixer      = netwinder_get_mixer,
1703 };
1704
1705 static void
1706 vnc_configure_mixer(wavnc_info *devc, unsigned int recmask)
1707 {
1708         if (!devc->no_autoselect) {
1709                 if (devc->handset_detect) {
1710                         recmask = SOUND_MASK_LINE1;
1711                         devc->spkr_mute_state = devc->line_mute_state = 1;
1712                 } else if (devc->telephone_detect) {
1713                         recmask = SOUND_MASK_PHONEIN;
1714                         devc->spkr_mute_state = devc->line_mute_state = 1;
1715                 } else {
1716                         /* unless someone has asked for LINE-IN,
1717                          * we default to MIC
1718                          */
1719                         if ((devc->recmask & SOUND_MASK_LINE) == 0)
1720                                 devc->recmask = SOUND_MASK_MIC;
1721                         devc->spkr_mute_state = devc->line_mute_state = 0;
1722                 }
1723                 vnc_mute_spkr(devc);
1724                 vnc_mute_lout(devc);
1725
1726                 if (recmask != devc->recmask)
1727                         waveartist_set_recmask(devc, recmask);
1728         }
1729 }
1730
1731 static int
1732 vnc_slider(wavnc_info *devc)
1733 {
1734         signed int slider_volume;
1735         unsigned int temp, old_hs, old_td;
1736
1737         /*
1738          * read the "buttons" state.
1739          *  Bit 4 = 0 means handset present
1740          *  Bit 5 = 1 means phone offhook
1741          */
1742         temp = inb(0x201);
1743
1744         old_hs = devc->handset_detect;
1745         old_td = devc->telephone_detect;
1746
1747         devc->handset_detect = !(temp & 0x10);
1748         devc->telephone_detect = !!(temp & 0x20);
1749
1750         if (!devc->no_autoselect &&
1751             (old_hs != devc->handset_detect ||
1752              old_td != devc->telephone_detect))
1753                 vnc_configure_mixer(devc, devc->recmask);
1754
1755         slider_volume = vnc_volume_slider(devc);
1756
1757         /*
1758          * If we're using software controlled volume, and
1759          * the slider moves by more than 20%, then we
1760          * switch back to slider controlled volume.
1761          */
1762         if (abs(devc->slider_vol - slider_volume) > 20)
1763                 devc->use_slider = 1;
1764
1765         /*
1766          * use only left channel
1767          */
1768         temp = levels[SOUND_MIXER_VOLUME] & 0xFF;
1769
1770         if (slider_volume != temp && devc->use_slider) {
1771                 devc->slider_vol = slider_volume;
1772
1773                 waveartist_set_mixer(devc, SOUND_MIXER_VOLUME,
1774                         slider_volume | slider_volume << 8);
1775
1776                 return 1;
1777         }
1778
1779         return 0;
1780 }
1781
1782 static void
1783 vnc_slider_tick(unsigned long data)
1784 {
1785         int next_timeout;
1786
1787         if (vnc_slider(adev_info + data))
1788                 next_timeout = 5;       // mixer reported change
1789         else
1790                 next_timeout = VNC_TIMER_PERIOD;
1791
1792         mod_timer(&vnc_timer, jiffies + next_timeout);
1793 }
1794
1795 static int
1796 vnc_private_ioctl(int dev, unsigned int cmd, int __user * arg)
1797 {
1798         wavnc_info *devc = (wavnc_info *)audio_devs[dev]->devc;
1799         int val;
1800
1801         switch (cmd) {
1802         case SOUND_MIXER_PRIVATE1:
1803         {
1804                 u_int prev_spkr_mute, prev_line_mute, prev_auto_state;
1805                 int val;
1806
1807                 if (get_user(val, arg))
1808                         return -EFAULT;
1809
1810                 /* check if parameter is logical */
1811                 if (val & ~(VNC_MUTE_INTERNAL_SPKR |
1812                             VNC_MUTE_LINE_OUT |
1813                             VNC_DISABLE_AUTOSWITCH))
1814                         return -EINVAL;
1815
1816                 prev_auto_state = devc->no_autoselect;
1817                 prev_spkr_mute  = devc->spkr_mute_state;
1818                 prev_line_mute  = devc->line_mute_state;
1819
1820                 devc->no_autoselect   = (val & VNC_DISABLE_AUTOSWITCH) ? 1 : 0;
1821                 devc->spkr_mute_state = (val & VNC_MUTE_INTERNAL_SPKR) ? 1 : 0;
1822                 devc->line_mute_state = (val & VNC_MUTE_LINE_OUT) ? 1 : 0;
1823
1824                 if (prev_spkr_mute != devc->spkr_mute_state)
1825                         vnc_mute_spkr(devc);
1826
1827                 if (prev_line_mute != devc->line_mute_state)
1828                         vnc_mute_lout(devc);
1829
1830                 if (prev_auto_state != devc->no_autoselect)
1831                         vnc_configure_mixer(devc, devc->recmask);
1832
1833                 return 0;
1834         }
1835
1836         case SOUND_MIXER_PRIVATE2:
1837                 if (get_user(val, arg))
1838                         return -EFAULT;
1839
1840                 switch (val) {
1841 #define VNC_SOUND_PAUSE         0x53    //to pause the DSP
1842 #define VNC_SOUND_RESUME        0x57    //to unpause the DSP
1843                 case VNC_SOUND_PAUSE:
1844                         waveartist_cmd1(devc, 0x16);
1845                         break;
1846
1847                 case VNC_SOUND_RESUME:
1848                         waveartist_cmd1(devc, 0x18);
1849                         break;
1850
1851                 default:
1852                         return -EINVAL;
1853                 }
1854                 return 0;
1855
1856         /* private ioctl to allow bulk access to waveartist */
1857         case SOUND_MIXER_PRIVATE3:
1858         {
1859                 unsigned long   flags;
1860                 int             mixer_reg[15], i, val;
1861
1862                 if (get_user(val, arg))
1863                         return -EFAULT;
1864                 if (copy_from_user(mixer_reg, (void *)val, sizeof(mixer_reg)))
1865                         return -EFAULT;
1866
1867                 switch (mixer_reg[14]) {
1868                 case MIXER_PRIVATE3_RESET:
1869                         waveartist_mixer_reset(devc);
1870                         break;
1871
1872                 case MIXER_PRIVATE3_WRITE:
1873                         waveartist_cmd3(devc, WACMD_SET_MIXER, mixer_reg[0], mixer_reg[4]);
1874                         waveartist_cmd3(devc, WACMD_SET_MIXER, mixer_reg[1], mixer_reg[5]);
1875                         waveartist_cmd3(devc, WACMD_SET_MIXER, mixer_reg[2], mixer_reg[6]);
1876                         waveartist_cmd3(devc, WACMD_SET_MIXER, mixer_reg[3], mixer_reg[7]);
1877                         waveartist_cmd3(devc, WACMD_SET_MIXER, mixer_reg[8], mixer_reg[9]);
1878
1879                         waveartist_cmd3(devc, WACMD_SET_LEVEL, mixer_reg[10], mixer_reg[11]);
1880                         waveartist_cmd3(devc, WACMD_SET_LEVEL, mixer_reg[12], mixer_reg[13]);
1881                         break;
1882
1883                 case MIXER_PRIVATE3_READ:
1884                         spin_lock_irqsave(&waveartist_lock, flags);
1885
1886                         for (i = 0x30; i < 14 << 8; i += 1 << 8)
1887                                 waveartist_cmd(devc, 1, &i, 1, mixer_reg + (i >> 8));
1888
1889                         spin_unlock_irqrestore(&waveartist_lock, flags);
1890
1891                         if (copy_to_user((void *)val, mixer_reg, sizeof(mixer_reg)))
1892                                 return -EFAULT;
1893                         break;
1894
1895                 default:
1896                         return -EINVAL;
1897                 }
1898                 return 0;
1899         }
1900
1901         /* read back the state from PRIVATE1 */
1902         case SOUND_MIXER_PRIVATE4:
1903                 val = (devc->spkr_mute_state  ? VNC_MUTE_INTERNAL_SPKR : 0) |
1904                       (devc->line_mute_state  ? VNC_MUTE_LINE_OUT      : 0) |
1905                       (devc->handset_detect   ? VNC_HANDSET_DETECT     : 0) |
1906                       (devc->telephone_detect ? VNC_PHONE_DETECT       : 0) |
1907                       (devc->no_autoselect    ? VNC_DISABLE_AUTOSWITCH : 0);
1908
1909                 return put_user(val, arg) ? -EFAULT : 0;
1910         }
1911
1912         if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
1913                 /*
1914                  * special case for master volume: if we
1915                  * received this call - switch from hw
1916                  * volume control to a software volume
1917                  * control, till the hw volume is modified
1918                  * to signal that user wants to be back in
1919                  * hardware...
1920                  */
1921                 if ((cmd & 0xff) == SOUND_MIXER_VOLUME)
1922                         devc->use_slider = 0;
1923
1924                 /* speaker output            */
1925                 if ((cmd & 0xff) == SOUND_MIXER_SPEAKER) {
1926                         unsigned int val, l, r;
1927
1928                         if (get_user(val, arg))
1929                                 return -EFAULT;
1930
1931                         l = val & 0x7f;
1932                         r = (val & 0x7f00) >> 8;
1933                         val = (l + r) / 2;
1934                         devc->levels[SOUND_MIXER_SPEAKER] = val | (val << 8);
1935                         devc->spkr_mute_state = (val <= 50);
1936                         vnc_mute_spkr(devc);
1937                         return 0;
1938                 }
1939         }
1940
1941         return -ENOIOCTLCMD;
1942 }
1943
1944 #endif
1945
1946 static struct address_info cfg;
1947
1948 static int attached;
1949
1950 static int __initdata io = 0;
1951 static int __initdata irq = 0;
1952 static int __initdata dma = 0;
1953 static int __initdata dma2 = 0;
1954
1955
1956 static int __init init_waveartist(void)
1957 {
1958         const struct waveartist_mixer_info *mix;
1959
1960         if (!io && machine_is_netwinder()) {
1961                 /*
1962                  * The NetWinder WaveArtist is at a fixed address.
1963                  * If the user does not supply an address, use the
1964                  * well-known parameters.
1965                  */
1966                 io   = 0x250;
1967                 irq  = 12;
1968                 dma  = 3;
1969                 dma2 = 7;
1970         }
1971
1972         mix = &waveartist_mixer;
1973 #ifdef CONFIG_ARCH_NETWINDER
1974         if (machine_is_netwinder())
1975                 mix = &netwinder_mixer;
1976 #endif
1977
1978         cfg.io_base = io;
1979         cfg.irq = irq;
1980         cfg.dma = dma;
1981         cfg.dma2 = dma2;
1982
1983         if (!probe_waveartist(&cfg))
1984                 return -ENODEV;
1985
1986         attach_waveartist(&cfg, mix);
1987         attached = 1;
1988
1989         return 0;
1990 }
1991
1992 static void __exit cleanup_waveartist(void)
1993 {
1994         if (attached)
1995                 unload_waveartist(&cfg);
1996 }
1997
1998 module_init(init_waveartist);
1999 module_exit(cleanup_waveartist);
2000
2001 #ifndef MODULE
2002 static int __init setup_waveartist(char *str)
2003 {
2004         /* io, irq, dma, dma2 */
2005         int ints[5];
2006         
2007         str = get_options(str, ARRAY_SIZE(ints), ints);
2008         
2009         io      = ints[1];
2010         irq     = ints[2];
2011         dma     = ints[3];
2012         dma2    = ints[4];
2013
2014         return 1;
2015 }
2016 __setup("waveartist=", setup_waveartist);
2017 #endif
2018
2019 MODULE_DESCRIPTION("Rockwell WaveArtist RWA-010 sound driver");
2020 module_param(io, int, 0);               /* IO base */
2021 module_param(irq, int, 0);              /* IRQ */
2022 module_param(dma, int, 0);              /* DMA */
2023 module_param(dma2, int, 0);             /* DMA2 */
2024 MODULE_LICENSE("GPL");