blob: 87910e9921332d770e5cd07d60434dd670b891fa [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/sound/oss/dmasound/dmasound_paula.c
3 *
4 * Amiga `Paula' DMA Sound Driver
5 *
6 * See linux/sound/oss/dmasound/dmasound_core.c for copyright and credits
7 * prior to 28/01/2001
8 *
9 * 28/01/2001 [0.1] Iain Sandoe
10 * - added versioning
11 * - put in and populated the hardware_afmts field.
12 * [0.2] - put in SNDCTL_DSP_GETCAPS value.
13 * [0.3] - put in constraint on state buffer usage.
14 * [0.4] - put in default hard/soft settings
15*/
16
17
18#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/mm.h>
20#include <linux/init.h>
21#include <linux/ioport.h>
22#include <linux/soundcard.h>
23#include <linux/interrupt.h>
Geert Uytterhoevenff2db7c2009-04-05 12:59:54 +020024#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26#include <asm/uaccess.h>
27#include <asm/setup.h>
28#include <asm/amigahw.h>
29#include <asm/amigaints.h>
30#include <asm/machdep.h>
31
32#include "dmasound.h"
33
34#define DMASOUND_PAULA_REVISION 0
35#define DMASOUND_PAULA_EDITION 4
36
Al Virob4290a22006-01-12 01:06:12 -080037#define custom amiga_custom
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 /*
39 * The minimum period for audio depends on htotal (for OCS/ECS/AGA)
40 * (Imported from arch/m68k/amiga/amisound.c)
41 */
42
43extern volatile u_short amiga_audio_min_period;
44
45
46 /*
47 * amiga_mksound() should be able to restore the period after beeping
48 * (Imported from arch/m68k/amiga/amisound.c)
49 */
50
51extern u_short amiga_audio_period;
52
53
54 /*
55 * Audio DMA masks
56 */
57
58#define AMI_AUDIO_OFF (DMAF_AUD0 | DMAF_AUD1 | DMAF_AUD2 | DMAF_AUD3)
59#define AMI_AUDIO_8 (DMAF_SETCLR | DMAF_MASTER | DMAF_AUD0 | DMAF_AUD1)
60#define AMI_AUDIO_14 (AMI_AUDIO_8 | DMAF_AUD2 | DMAF_AUD3)
61
62
63 /*
64 * Helper pointers for 16(14)-bit sound
65 */
66
67static int write_sq_block_size_half, write_sq_block_size_quarter;
68
69
70/*** Low level stuff *********************************************************/
71
72
Al Viro1ef64e62005-10-21 03:22:18 -040073static void *AmiAlloc(unsigned int size, gfp_t flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074static void AmiFree(void *obj, unsigned int size);
75static int AmiIrqInit(void);
76#ifdef MODULE
77static void AmiIrqCleanUp(void);
78#endif
79static void AmiSilence(void);
80static void AmiInit(void);
81static int AmiSetFormat(int format);
82static int AmiSetVolume(int volume);
83static int AmiSetTreble(int treble);
84static void AmiPlayNextFrame(int index);
85static void AmiPlay(void);
David Howells7d12e782006-10-05 14:55:46 +010086static irqreturn_t AmiInterrupt(int irq, void *dummy);
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
88#ifdef CONFIG_HEARTBEAT
89
90 /*
91 * Heartbeat interferes with sound since the 7 kHz low-pass filter and the
92 * power LED are controlled by the same line.
93 */
94
Linus Torvalds1da177e2005-04-16 15:20:36 -070095static void (*saved_heartbeat)(int) = NULL;
96
97static inline void disable_heartbeat(void)
98{
99 if (mach_heartbeat) {
100 saved_heartbeat = mach_heartbeat;
101 mach_heartbeat = NULL;
102 }
103 AmiSetTreble(dmasound.treble);
104}
105
106static inline void enable_heartbeat(void)
107{
108 if (saved_heartbeat)
109 mach_heartbeat = saved_heartbeat;
110}
111#else /* !CONFIG_HEARTBEAT */
112#define disable_heartbeat() do { } while (0)
113#define enable_heartbeat() do { } while (0)
114#endif /* !CONFIG_HEARTBEAT */
115
116
117/*** Mid level stuff *********************************************************/
118
119static void AmiMixerInit(void);
120static int AmiMixerIoctl(u_int cmd, u_long arg);
121static int AmiWriteSqSetup(void);
122static int AmiStateInfo(char *buffer, size_t space);
123
124
125/*** Translations ************************************************************/
126
127/* ++TeSche: radically changed for new expanding purposes...
128 *
129 * These two routines now deal with copying/expanding/translating the samples
130 * from user space into our buffer at the right frequency. They take care about
131 * how much data there's actually to read, how much buffer space there is and
132 * to convert samples into the right frequency/encoding. They will only work on
133 * complete samples so it may happen they leave some bytes in the input stream
134 * if the user didn't write a multiple of the current sample size. They both
135 * return the number of bytes they've used from both streams so you may detect
136 * such a situation. Luckily all programs should be able to cope with that.
137 *
138 * I think I've optimized anything as far as one can do in plain C, all
139 * variables should fit in registers and the loops are really short. There's
140 * one loop for every possible situation. Writing a more generalized and thus
141 * parameterized loop would only produce slower code. Feel free to optimize
142 * this in assembler if you like. :)
143 *
144 * I think these routines belong here because they're not yet really hardware
145 * independent, especially the fact that the Falcon can play 16bit samples
146 * only in stereo is hardcoded in both of them!
147 *
148 * ++geert: split in even more functions (one per format)
149 */
150
151
152 /*
153 * Native format
154 */
155
Al Viro031eb4c2006-01-12 01:06:33 -0800156static ssize_t ami_ct_s8(const u_char __user *userPtr, size_t userCount,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 u_char frame[], ssize_t *frameUsed, ssize_t frameLeft)
158{
159 ssize_t count, used;
160
161 if (!dmasound.soft.stereo) {
162 void *p = &frame[*frameUsed];
163 count = min_t(unsigned long, userCount, frameLeft) & ~1;
164 used = count;
165 if (copy_from_user(p, userPtr, count))
166 return -EFAULT;
167 } else {
168 u_char *left = &frame[*frameUsed>>1];
169 u_char *right = left+write_sq_block_size_half;
170 count = min_t(unsigned long, userCount, frameLeft)>>1 & ~1;
171 used = count*2;
172 while (count > 0) {
173 if (get_user(*left++, userPtr++)
174 || get_user(*right++, userPtr++))
175 return -EFAULT;
176 count--;
177 }
178 }
179 *frameUsed += used;
180 return used;
181}
182
183
184 /*
185 * Copy and convert 8 bit data
186 */
187
188#define GENERATE_AMI_CT8(funcname, convsample) \
Al Viro031eb4c2006-01-12 01:06:33 -0800189static ssize_t funcname(const u_char __user *userPtr, size_t userCount, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 u_char frame[], ssize_t *frameUsed, \
191 ssize_t frameLeft) \
192{ \
193 ssize_t count, used; \
194 \
195 if (!dmasound.soft.stereo) { \
196 u_char *p = &frame[*frameUsed]; \
197 count = min_t(size_t, userCount, frameLeft) & ~1; \
198 used = count; \
199 while (count > 0) { \
200 u_char data; \
201 if (get_user(data, userPtr++)) \
202 return -EFAULT; \
203 *p++ = convsample(data); \
204 count--; \
205 } \
206 } else { \
207 u_char *left = &frame[*frameUsed>>1]; \
208 u_char *right = left+write_sq_block_size_half; \
209 count = min_t(size_t, userCount, frameLeft)>>1 & ~1; \
210 used = count*2; \
211 while (count > 0) { \
212 u_char data; \
213 if (get_user(data, userPtr++)) \
214 return -EFAULT; \
215 *left++ = convsample(data); \
216 if (get_user(data, userPtr++)) \
217 return -EFAULT; \
218 *right++ = convsample(data); \
219 count--; \
220 } \
221 } \
222 *frameUsed += used; \
223 return used; \
224}
225
226#define AMI_CT_ULAW(x) (dmasound_ulaw2dma8[(x)])
227#define AMI_CT_ALAW(x) (dmasound_alaw2dma8[(x)])
228#define AMI_CT_U8(x) ((x) ^ 0x80)
229
230GENERATE_AMI_CT8(ami_ct_ulaw, AMI_CT_ULAW)
231GENERATE_AMI_CT8(ami_ct_alaw, AMI_CT_ALAW)
232GENERATE_AMI_CT8(ami_ct_u8, AMI_CT_U8)
233
234
235 /*
236 * Copy and convert 16 bit data
237 */
238
239#define GENERATE_AMI_CT_16(funcname, convsample) \
Al Viro031eb4c2006-01-12 01:06:33 -0800240static ssize_t funcname(const u_char __user *userPtr, size_t userCount, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 u_char frame[], ssize_t *frameUsed, \
242 ssize_t frameLeft) \
243{ \
Al Viro031eb4c2006-01-12 01:06:33 -0800244 const u_short __user *ptr = (const u_short __user *)userPtr; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 ssize_t count, used; \
246 u_short data; \
247 \
248 if (!dmasound.soft.stereo) { \
249 u_char *high = &frame[*frameUsed>>1]; \
250 u_char *low = high+write_sq_block_size_half; \
251 count = min_t(size_t, userCount, frameLeft)>>1 & ~1; \
252 used = count*2; \
253 while (count > 0) { \
Al Viro815f5972006-01-12 01:06:21 -0800254 if (get_user(data, ptr++)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 return -EFAULT; \
256 data = convsample(data); \
257 *high++ = data>>8; \
258 *low++ = (data>>2) & 0x3f; \
259 count--; \
260 } \
261 } else { \
262 u_char *lefth = &frame[*frameUsed>>2]; \
263 u_char *leftl = lefth+write_sq_block_size_quarter; \
264 u_char *righth = lefth+write_sq_block_size_half; \
265 u_char *rightl = righth+write_sq_block_size_quarter; \
266 count = min_t(size_t, userCount, frameLeft)>>2 & ~1; \
267 used = count*4; \
268 while (count > 0) { \
Al Viro815f5972006-01-12 01:06:21 -0800269 if (get_user(data, ptr++)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 return -EFAULT; \
271 data = convsample(data); \
272 *lefth++ = data>>8; \
273 *leftl++ = (data>>2) & 0x3f; \
Al Viro815f5972006-01-12 01:06:21 -0800274 if (get_user(data, ptr++)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 return -EFAULT; \
276 data = convsample(data); \
277 *righth++ = data>>8; \
278 *rightl++ = (data>>2) & 0x3f; \
279 count--; \
280 } \
281 } \
282 *frameUsed += used; \
283 return used; \
284}
285
286#define AMI_CT_S16BE(x) (x)
287#define AMI_CT_U16BE(x) ((x) ^ 0x8000)
288#define AMI_CT_S16LE(x) (le2be16((x)))
289#define AMI_CT_U16LE(x) (le2be16((x)) ^ 0x8000)
290
291GENERATE_AMI_CT_16(ami_ct_s16be, AMI_CT_S16BE)
292GENERATE_AMI_CT_16(ami_ct_u16be, AMI_CT_U16BE)
293GENERATE_AMI_CT_16(ami_ct_s16le, AMI_CT_S16LE)
294GENERATE_AMI_CT_16(ami_ct_u16le, AMI_CT_U16LE)
295
296
297static TRANS transAmiga = {
298 .ct_ulaw = ami_ct_ulaw,
299 .ct_alaw = ami_ct_alaw,
300 .ct_s8 = ami_ct_s8,
301 .ct_u8 = ami_ct_u8,
302 .ct_s16be = ami_ct_s16be,
303 .ct_u16be = ami_ct_u16be,
304 .ct_s16le = ami_ct_s16le,
305 .ct_u16le = ami_ct_u16le,
306};
307
308/*** Low level stuff *********************************************************/
309
310static inline void StopDMA(void)
311{
312 custom.aud[0].audvol = custom.aud[1].audvol = 0;
313 custom.aud[2].audvol = custom.aud[3].audvol = 0;
314 custom.dmacon = AMI_AUDIO_OFF;
315 enable_heartbeat();
316}
317
Al Viro1ef64e62005-10-21 03:22:18 -0400318static void *AmiAlloc(unsigned int size, gfp_t flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319{
320 return amiga_chip_alloc((long)size, "dmasound [Paula]");
321}
322
323static void AmiFree(void *obj, unsigned int size)
324{
325 amiga_chip_free (obj);
326}
327
328static int __init AmiIrqInit(void)
329{
330 /* turn off DMA for audio channels */
331 StopDMA();
332
333 /* Register interrupt handler. */
334 if (request_irq(IRQ_AMIGA_AUD0, AmiInterrupt, 0, "DMA sound",
335 AmiInterrupt))
336 return 0;
337 return 1;
338}
339
340#ifdef MODULE
341static void AmiIrqCleanUp(void)
342{
343 /* turn off DMA for audio channels */
344 StopDMA();
345 /* release the interrupt */
346 free_irq(IRQ_AMIGA_AUD0, AmiInterrupt);
347}
348#endif /* MODULE */
349
350static void AmiSilence(void)
351{
352 /* turn off DMA for audio channels */
353 StopDMA();
354}
355
356
357static void AmiInit(void)
358{
359 int period, i;
360
361 AmiSilence();
362
363 if (dmasound.soft.speed)
364 period = amiga_colorclock/dmasound.soft.speed-1;
365 else
366 period = amiga_audio_min_period;
367 dmasound.hard = dmasound.soft;
368 dmasound.trans_write = &transAmiga;
369
370 if (period < amiga_audio_min_period) {
371 /* we would need to squeeze the sound, but we won't do that */
372 period = amiga_audio_min_period;
373 } else if (period > 65535) {
374 period = 65535;
375 }
376 dmasound.hard.speed = amiga_colorclock/(period+1);
377
378 for (i = 0; i < 4; i++)
379 custom.aud[i].audper = period;
380 amiga_audio_period = period;
381}
382
383
384static int AmiSetFormat(int format)
385{
386 int size;
387
388 /* Amiga sound DMA supports 8bit and 16bit (pseudo 14 bit) modes */
389
390 switch (format) {
391 case AFMT_QUERY:
392 return dmasound.soft.format;
393 case AFMT_MU_LAW:
394 case AFMT_A_LAW:
395 case AFMT_U8:
396 case AFMT_S8:
397 size = 8;
398 break;
399 case AFMT_S16_BE:
400 case AFMT_U16_BE:
401 case AFMT_S16_LE:
402 case AFMT_U16_LE:
403 size = 16;
404 break;
405 default: /* :-) */
406 size = 8;
407 format = AFMT_S8;
408 }
409
410 dmasound.soft.format = format;
411 dmasound.soft.size = size;
412 if (dmasound.minDev == SND_DEV_DSP) {
413 dmasound.dsp.format = format;
414 dmasound.dsp.size = dmasound.soft.size;
415 }
416 AmiInit();
417
418 return format;
419}
420
421
422#define VOLUME_VOXWARE_TO_AMI(v) \
423 (((v) < 0) ? 0 : ((v) > 100) ? 64 : ((v) * 64)/100)
424#define VOLUME_AMI_TO_VOXWARE(v) ((v)*100/64)
425
426static int AmiSetVolume(int volume)
427{
428 dmasound.volume_left = VOLUME_VOXWARE_TO_AMI(volume & 0xff);
429 custom.aud[0].audvol = dmasound.volume_left;
430 dmasound.volume_right = VOLUME_VOXWARE_TO_AMI((volume & 0xff00) >> 8);
431 custom.aud[1].audvol = dmasound.volume_right;
432 if (dmasound.hard.size == 16) {
433 if (dmasound.volume_left == 64 && dmasound.volume_right == 64) {
434 custom.aud[2].audvol = 1;
435 custom.aud[3].audvol = 1;
436 } else {
437 custom.aud[2].audvol = 0;
438 custom.aud[3].audvol = 0;
439 }
440 }
441 return VOLUME_AMI_TO_VOXWARE(dmasound.volume_left) |
442 (VOLUME_AMI_TO_VOXWARE(dmasound.volume_right) << 8);
443}
444
445static int AmiSetTreble(int treble)
446{
447 dmasound.treble = treble;
448 if (treble < 50)
449 ciaa.pra &= ~0x02;
450 else
451 ciaa.pra |= 0x02;
452 return treble;
453}
454
455
456#define AMI_PLAY_LOADED 1
457#define AMI_PLAY_PLAYING 2
458#define AMI_PLAY_MASK 3
459
460
461static void AmiPlayNextFrame(int index)
462{
463 u_char *start, *ch0, *ch1, *ch2, *ch3;
464 u_long size;
465
466 /* used by AmiPlay() if all doubts whether there really is something
467 * to be played are already wiped out.
468 */
469 start = write_sq.buffers[write_sq.front];
470 size = (write_sq.count == index ? write_sq.rear_size
471 : write_sq.block_size)>>1;
472
473 if (dmasound.hard.stereo) {
474 ch0 = start;
475 ch1 = start+write_sq_block_size_half;
476 size >>= 1;
477 } else {
478 ch0 = start;
479 ch1 = start;
480 }
481
482 disable_heartbeat();
483 custom.aud[0].audvol = dmasound.volume_left;
484 custom.aud[1].audvol = dmasound.volume_right;
485 if (dmasound.hard.size == 8) {
486 custom.aud[0].audlc = (u_short *)ZTWO_PADDR(ch0);
487 custom.aud[0].audlen = size;
488 custom.aud[1].audlc = (u_short *)ZTWO_PADDR(ch1);
489 custom.aud[1].audlen = size;
490 custom.dmacon = AMI_AUDIO_8;
491 } else {
492 size >>= 1;
493 custom.aud[0].audlc = (u_short *)ZTWO_PADDR(ch0);
494 custom.aud[0].audlen = size;
495 custom.aud[1].audlc = (u_short *)ZTWO_PADDR(ch1);
496 custom.aud[1].audlen = size;
497 if (dmasound.volume_left == 64 && dmasound.volume_right == 64) {
498 /* We can play pseudo 14-bit only with the maximum volume */
499 ch3 = ch0+write_sq_block_size_quarter;
500 ch2 = ch1+write_sq_block_size_quarter;
501 custom.aud[2].audvol = 1; /* we are being affected by the beeps */
502 custom.aud[3].audvol = 1; /* restoring volume here helps a bit */
503 custom.aud[2].audlc = (u_short *)ZTWO_PADDR(ch2);
504 custom.aud[2].audlen = size;
505 custom.aud[3].audlc = (u_short *)ZTWO_PADDR(ch3);
506 custom.aud[3].audlen = size;
507 custom.dmacon = AMI_AUDIO_14;
508 } else {
509 custom.aud[2].audvol = 0;
510 custom.aud[3].audvol = 0;
511 custom.dmacon = AMI_AUDIO_8;
512 }
513 }
514 write_sq.front = (write_sq.front+1) % write_sq.max_count;
515 write_sq.active |= AMI_PLAY_LOADED;
516}
517
518
519static void AmiPlay(void)
520{
521 int minframes = 1;
522
523 custom.intena = IF_AUD0;
524
525 if (write_sq.active & AMI_PLAY_LOADED) {
526 /* There's already a frame loaded */
527 custom.intena = IF_SETCLR | IF_AUD0;
528 return;
529 }
530
531 if (write_sq.active & AMI_PLAY_PLAYING)
532 /* Increase threshold: frame 1 is already being played */
533 minframes = 2;
534
535 if (write_sq.count < minframes) {
536 /* Nothing to do */
537 custom.intena = IF_SETCLR | IF_AUD0;
538 return;
539 }
540
541 if (write_sq.count <= minframes &&
542 write_sq.rear_size < write_sq.block_size && !write_sq.syncing) {
543 /* hmmm, the only existing frame is not
544 * yet filled and we're not syncing?
545 */
546 custom.intena = IF_SETCLR | IF_AUD0;
547 return;
548 }
549
550 AmiPlayNextFrame(minframes);
551
552 custom.intena = IF_SETCLR | IF_AUD0;
553}
554
555
David Howells7d12e782006-10-05 14:55:46 +0100556static irqreturn_t AmiInterrupt(int irq, void *dummy)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557{
558 int minframes = 1;
559
560 custom.intena = IF_AUD0;
561
562 if (!write_sq.active) {
563 /* Playing was interrupted and sq_reset() has already cleared
564 * the sq variables, so better don't do anything here.
565 */
566 WAKE_UP(write_sq.sync_queue);
567 return IRQ_HANDLED;
568 }
569
570 if (write_sq.active & AMI_PLAY_PLAYING) {
571 /* We've just finished a frame */
572 write_sq.count--;
573 WAKE_UP(write_sq.action_queue);
574 }
575
576 if (write_sq.active & AMI_PLAY_LOADED)
577 /* Increase threshold: frame 1 is already being played */
578 minframes = 2;
579
580 /* Shift the flags */
581 write_sq.active = (write_sq.active<<1) & AMI_PLAY_MASK;
582
583 if (!write_sq.active)
584 /* No frame is playing, disable audio DMA */
585 StopDMA();
586
587 custom.intena = IF_SETCLR | IF_AUD0;
588
589 if (write_sq.count >= minframes)
590 /* Try to play the next frame */
591 AmiPlay();
592
593 if (!write_sq.active)
594 /* Nothing to play anymore.
595 Wake up a process waiting for audio output to drain. */
596 WAKE_UP(write_sq.sync_queue);
597 return IRQ_HANDLED;
598}
599
600/*** Mid level stuff *********************************************************/
601
602
603/*
604 * /dev/mixer abstraction
605 */
606
607static void __init AmiMixerInit(void)
608{
609 dmasound.volume_left = 64;
610 dmasound.volume_right = 64;
611 custom.aud[0].audvol = dmasound.volume_left;
612 custom.aud[3].audvol = 1; /* For pseudo 14bit */
613 custom.aud[1].audvol = dmasound.volume_right;
614 custom.aud[2].audvol = 1; /* For pseudo 14bit */
615 dmasound.treble = 50;
616}
617
618static int AmiMixerIoctl(u_int cmd, u_long arg)
619{
620 int data;
621 switch (cmd) {
622 case SOUND_MIXER_READ_DEVMASK:
623 return IOCTL_OUT(arg, SOUND_MASK_VOLUME | SOUND_MASK_TREBLE);
624 case SOUND_MIXER_READ_RECMASK:
625 return IOCTL_OUT(arg, 0);
626 case SOUND_MIXER_READ_STEREODEVS:
627 return IOCTL_OUT(arg, SOUND_MASK_VOLUME);
628 case SOUND_MIXER_READ_VOLUME:
629 return IOCTL_OUT(arg,
630 VOLUME_AMI_TO_VOXWARE(dmasound.volume_left) |
631 VOLUME_AMI_TO_VOXWARE(dmasound.volume_right) << 8);
632 case SOUND_MIXER_WRITE_VOLUME:
633 IOCTL_IN(arg, data);
634 return IOCTL_OUT(arg, dmasound_set_volume(data));
635 case SOUND_MIXER_READ_TREBLE:
636 return IOCTL_OUT(arg, dmasound.treble);
637 case SOUND_MIXER_WRITE_TREBLE:
638 IOCTL_IN(arg, data);
639 return IOCTL_OUT(arg, dmasound_set_treble(data));
640 }
641 return -EINVAL;
642}
643
644
645static int AmiWriteSqSetup(void)
646{
647 write_sq_block_size_half = write_sq.block_size>>1;
648 write_sq_block_size_quarter = write_sq_block_size_half>>1;
649 return 0;
650}
651
652
653static int AmiStateInfo(char *buffer, size_t space)
654{
655 int len = 0;
656 len += sprintf(buffer+len, "\tsound.volume_left = %d [0...64]\n",
657 dmasound.volume_left);
658 len += sprintf(buffer+len, "\tsound.volume_right = %d [0...64]\n",
659 dmasound.volume_right);
660 if (len >= space) {
André Goddard Rosaaf901ca2009-11-14 13:09:05 -0200661 printk(KERN_ERR "dmasound_paula: overflowed state buffer alloc.\n") ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 len = space ;
663 }
664 return len;
665}
666
667
668/*** Machine definitions *****************************************************/
669
670static SETTINGS def_hard = {
671 .format = AFMT_S8,
672 .stereo = 0,
673 .size = 8,
674 .speed = 8000
675} ;
676
677static SETTINGS def_soft = {
678 .format = AFMT_U8,
679 .stereo = 0,
680 .size = 8,
681 .speed = 8000
682} ;
683
684static MACHINE machAmiga = {
685 .name = "Amiga",
686 .name2 = "AMIGA",
687 .owner = THIS_MODULE,
688 .dma_alloc = AmiAlloc,
689 .dma_free = AmiFree,
690 .irqinit = AmiIrqInit,
691#ifdef MODULE
692 .irqcleanup = AmiIrqCleanUp,
693#endif /* MODULE */
694 .init = AmiInit,
695 .silence = AmiSilence,
696 .setFormat = AmiSetFormat,
697 .setVolume = AmiSetVolume,
698 .setTreble = AmiSetTreble,
699 .play = AmiPlay,
700 .mixer_init = AmiMixerInit,
701 .mixer_ioctl = AmiMixerIoctl,
702 .write_sq_setup = AmiWriteSqSetup,
703 .state_info = AmiStateInfo,
704 .min_dsp_speed = 8000,
705 .version = ((DMASOUND_PAULA_REVISION<<8) | DMASOUND_PAULA_EDITION),
706 .hardware_afmts = (AFMT_S8 | AFMT_S16_BE), /* h'ware-supported formats *only* here */
707 .capabilities = DSP_CAP_BATCH /* As per SNDCTL_DSP_GETCAPS */
708};
709
710
711/*** Config & Setup **********************************************************/
712
713
Geert Uytterhoevenff2db7c2009-04-05 12:59:54 +0200714static int __init amiga_audio_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715{
Geert Uytterhoevenff2db7c2009-04-05 12:59:54 +0200716 dmasound.mach = machAmiga;
717 dmasound.mach.default_hard = def_hard ;
718 dmasound.mach.default_soft = def_soft ;
719 return dmasound_init();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720}
721
Geert Uytterhoevenff2db7c2009-04-05 12:59:54 +0200722static int __exit amiga_audio_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723{
724 dmasound_deinit();
Geert Uytterhoevenff2db7c2009-04-05 12:59:54 +0200725 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726}
727
Geert Uytterhoevenff2db7c2009-04-05 12:59:54 +0200728static struct platform_driver amiga_audio_driver = {
729 .remove = __exit_p(amiga_audio_remove),
730 .driver = {
731 .name = "amiga-audio",
732 .owner = THIS_MODULE,
733 },
734};
735
736static int __init amiga_audio_init(void)
737{
738 return platform_driver_probe(&amiga_audio_driver, amiga_audio_probe);
739}
740
741module_init(amiga_audio_init);
742
743static void __exit amiga_audio_exit(void)
744{
745 platform_driver_unregister(&amiga_audio_driver);
746}
747
748module_exit(amiga_audio_exit);
749
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750MODULE_LICENSE("GPL");
Geert Uytterhoevenff2db7c2009-04-05 12:59:54 +0200751MODULE_ALIAS("platform:amiga-audio");