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Linux v2.6.15
[linux/fpc-iii.git] / sound / parisc / harmony.c
blobd833349ed5185a5aba5334fa87d9ea710231e777
1 /* Hewlett-Packard Harmony audio driver
2 *
3 * This is a driver for the Harmony audio chipset found
4 * on the LASI ASIC of various early HP PA-RISC workstations.
5 *
6 * Copyright (C) 2004, Kyle McMartin <kyle@{debian.org,parisc-linux.org}>
7 *
8 * Based on the previous Harmony incarnations by,
9 * Copyright 2000 (c) Linuxcare Canada, Alex deVries
10 * Copyright 2000-2003 (c) Helge Deller
11 * Copyright 2001 (c) Matthieu Delahaye
12 * Copyright 2001 (c) Jean-Christophe Vaugeois
13 * Copyright 2003 (c) Laurent Canet
14 * Copyright 2004 (c) Stuart Brady
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License, version 2, as
18 * published by the Free Software Foundation.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 *
29 * Notes:
30 * - graveyard and silence buffers last for lifetime of
31 * the driver. playback and capture buffers are allocated
32 * per _open()/_close().
33 *
34 * TODO:
35 *
36 */
37
38 #include <linux/init.h>
39 #include <linux/slab.h>
40 #include <linux/time.h>
41 #include <linux/wait.h>
42 #include <linux/delay.h>
43 #include <linux/module.h>
44 #include <linux/interrupt.h>
45 #include <linux/spinlock.h>
46 #include <linux/dma-mapping.h>
47
48 #include <sound/driver.h>
49 #include <sound/core.h>
50 #include <sound/pcm.h>
51 #include <sound/control.h>
52 #include <sound/rawmidi.h>
53 #include <sound/initval.h>
54 #include <sound/info.h>
55
56 #include <asm/io.h>
57 #include <asm/hardware.h>
58 #include <asm/parisc-device.h>
59
60 #include "harmony.h"
61
62 static struct parisc_device_id snd_harmony_devtable[] = {
63 /* bushmaster / flounder */
64 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A },
65 /* 712 / 715 */
66 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007B },
67 /* pace */
68 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007E },
69 /* outfield / coral II */
70 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007F },
71 { 0, }
72 };
73
74 MODULE_DEVICE_TABLE(parisc, snd_harmony_devtable);
75
76 #define NAME "harmony"
77 #define PFX NAME ": "
78
79 static unsigned int snd_harmony_rates[] = {
80 5512, 6615, 8000, 9600,
81 11025, 16000, 18900, 22050,
82 27428, 32000, 33075, 37800,
83 44100, 48000
84 };
85
86 static unsigned int rate_bits[14] = {
87 HARMONY_SR_5KHZ, HARMONY_SR_6KHZ, HARMONY_SR_8KHZ,
88 HARMONY_SR_9KHZ, HARMONY_SR_11KHZ, HARMONY_SR_16KHZ,
89 HARMONY_SR_18KHZ, HARMONY_SR_22KHZ, HARMONY_SR_27KHZ,
90 HARMONY_SR_32KHZ, HARMONY_SR_33KHZ, HARMONY_SR_37KHZ,
91 HARMONY_SR_44KHZ, HARMONY_SR_48KHZ
92 };
93
94 static snd_pcm_hw_constraint_list_t hw_constraint_rates = {
95 .count = ARRAY_SIZE(snd_harmony_rates),
96 .list = snd_harmony_rates,
97 .mask = 0,
98 };
99
100 inline unsigned long
101 harmony_read(harmony_t *h, unsigned r)
102 {
103 return __raw_readl(h->iobase + r);
104 }
105
106 inline void
107 harmony_write(harmony_t *h, unsigned r, unsigned long v)
108 {
109 __raw_writel(v, h->iobase + r);
110 }
111
112 static void
113 harmony_wait_for_control(harmony_t *h)
114 {
115 while (harmony_read(h, HARMONY_CNTL) & HARMONY_CNTL_C) ;
116 }
117
118 inline void
119 harmony_reset(harmony_t *h)
120 {
121 harmony_write(h, HARMONY_RESET, 1);
122 mdelay(50);
123 harmony_write(h, HARMONY_RESET, 0);
124 }
125
126 static void
127 harmony_disable_interrupts(harmony_t *h)
128 {
129 u32 dstatus;
130 harmony_wait_for_control(h);
131 dstatus = harmony_read(h, HARMONY_DSTATUS);
132 dstatus &= ~HARMONY_DSTATUS_IE;
133 harmony_write(h, HARMONY_DSTATUS, dstatus);
134 }
135
136 static void
137 harmony_enable_interrupts(harmony_t *h)
138 {
139 u32 dstatus;
140 harmony_wait_for_control(h);
141 dstatus = harmony_read(h, HARMONY_DSTATUS);
142 dstatus |= HARMONY_DSTATUS_IE;
143 harmony_write(h, HARMONY_DSTATUS, dstatus);
144 }
145
146 static void
147 harmony_mute(harmony_t *h)
148 {
149 unsigned long flags;
150
151 spin_lock_irqsave(&h->mixer_lock, flags);
152 harmony_wait_for_control(h);
153 harmony_write(h, HARMONY_GAINCTL, HARMONY_GAIN_SILENCE);
154 spin_unlock_irqrestore(&h->mixer_lock, flags);
155 }
156
157 static void
158 harmony_unmute(harmony_t *h)
159 {
160 unsigned long flags;
161
162 spin_lock_irqsave(&h->mixer_lock, flags);
163 harmony_wait_for_control(h);
164 harmony_write(h, HARMONY_GAINCTL, h->st.gain);
165 spin_unlock_irqrestore(&h->mixer_lock, flags);
166 }
167
168 static void
169 harmony_set_control(harmony_t *h)
170 {
171 u32 ctrl;
172 unsigned long flags;
173
174 spin_lock_irqsave(&h->lock, flags);
175
176 ctrl = (HARMONY_CNTL_C |
177 (h->st.format << 6) |
178 (h->st.stereo << 5) |
179 (h->st.rate));
180
181 harmony_wait_for_control(h);
182 harmony_write(h, HARMONY_CNTL, ctrl);
183
184 spin_unlock_irqrestore(&h->lock, flags);
185 }
186
187 static irqreturn_t
188 snd_harmony_interrupt(int irq, void *dev, struct pt_regs *regs)
189 {
190 u32 dstatus;
191 harmony_t *h = dev;
192
193 spin_lock(&h->lock);
194 harmony_disable_interrupts(h);
195 harmony_wait_for_control(h);
196 dstatus = harmony_read(h, HARMONY_DSTATUS);
197 spin_unlock(&h->lock);
198
199 if (dstatus & HARMONY_DSTATUS_PN) {
200 if (h->psubs && h->st.playing) {
201 spin_lock(&h->lock);
202 h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */
203 h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */
204
205 harmony_write(h, HARMONY_PNXTADD,
206 h->pbuf.addr + h->pbuf.buf);
207 h->stats.play_intr++;
208 spin_unlock(&h->lock);
209 snd_pcm_period_elapsed(h->psubs);
210 } else {
211 spin_lock(&h->lock);
212 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
213 h->stats.silence_intr++;
214 spin_unlock(&h->lock);
215 }
216 }
217
218 if (dstatus & HARMONY_DSTATUS_RN) {
219 if (h->csubs && h->st.capturing) {
220 spin_lock(&h->lock);
221 h->cbuf.buf += h->cbuf.count;
222 h->cbuf.buf %= h->cbuf.size;
223
224 harmony_write(h, HARMONY_RNXTADD,
225 h->cbuf.addr + h->cbuf.buf);
226 h->stats.rec_intr++;
227 spin_unlock(&h->lock);
228 snd_pcm_period_elapsed(h->csubs);
229 } else {
230 spin_lock(&h->lock);
231 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
232 h->stats.graveyard_intr++;
233 spin_unlock(&h->lock);
234 }
235 }
236
237 spin_lock(&h->lock);
238 harmony_enable_interrupts(h);
239 spin_unlock(&h->lock);
240
241 return IRQ_HANDLED;
242 }
243
244 static unsigned int
245 snd_harmony_rate_bits(int rate)
246 {
247 unsigned int i;
248
249 for (i = 0; i < ARRAY_SIZE(snd_harmony_rates); i++)
250 if (snd_harmony_rates[i] == rate)
251 return rate_bits[i];
252
253 return HARMONY_SR_44KHZ;
254 }
255
256 static snd_pcm_hardware_t snd_harmony_playback =
257 {
258 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
259 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
260 SNDRV_PCM_INFO_BLOCK_TRANSFER),
261 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
262 SNDRV_PCM_FMTBIT_A_LAW),
263 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
264 SNDRV_PCM_RATE_KNOT),
265 .rate_min = 5512,
266 .rate_max = 48000,
267 .channels_min = 1,
268 .channels_max = 2,
269 .buffer_bytes_max = MAX_BUF_SIZE,
270 .period_bytes_min = BUF_SIZE,
271 .period_bytes_max = BUF_SIZE,
272 .periods_min = 1,
273 .periods_max = MAX_BUFS,
274 .fifo_size = 0,
275 };
276
277 static snd_pcm_hardware_t snd_harmony_capture =
278 {
279 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
280 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
281 SNDRV_PCM_INFO_BLOCK_TRANSFER),
282 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
283 SNDRV_PCM_FMTBIT_A_LAW),
284 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
285 SNDRV_PCM_RATE_KNOT),
286 .rate_min = 5512,
287 .rate_max = 48000,
288 .channels_min = 1,
289 .channels_max = 2,
290 .buffer_bytes_max = MAX_BUF_SIZE,
291 .period_bytes_min = BUF_SIZE,
292 .period_bytes_max = BUF_SIZE,
293 .periods_min = 1,
294 .periods_max = MAX_BUFS,
295 .fifo_size = 0,
296 };
297
298 static int
299 snd_harmony_playback_trigger(snd_pcm_substream_t *ss, int cmd)
300 {
301 harmony_t *h = snd_pcm_substream_chip(ss);
302 unsigned long flags;
303
304 if (h->st.capturing)
305 return -EBUSY;
306
307 spin_lock_irqsave(&h->lock, flags);
308 switch (cmd) {
309 case SNDRV_PCM_TRIGGER_START:
310 h->st.playing = 1;
311 harmony_write(h, HARMONY_PNXTADD, h->pbuf.addr);
312 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
313 harmony_unmute(h);
314 harmony_enable_interrupts(h);
315 break;
316 case SNDRV_PCM_TRIGGER_STOP:
317 h->st.playing = 0;
318 harmony_mute(h);
319 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
320 harmony_disable_interrupts(h);
321 break;
322 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
323 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
324 case SNDRV_PCM_TRIGGER_SUSPEND:
325 default:
326 spin_unlock_irqrestore(&h->lock, flags);
327 snd_BUG();
328 return -EINVAL;
329 }
330 spin_unlock_irqrestore(&h->lock, flags);
331
332 return 0;
333 }
334
335 static int
336 snd_harmony_capture_trigger(snd_pcm_substream_t *ss, int cmd)
337 {
338 harmony_t *h = snd_pcm_substream_chip(ss);
339 unsigned long flags;
340
341 if (h->st.playing)
342 return -EBUSY;
343
344 spin_lock_irqsave(&h->lock, flags);
345 switch (cmd) {
346 case SNDRV_PCM_TRIGGER_START:
347 h->st.capturing = 1;
348 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
349 harmony_write(h, HARMONY_RNXTADD, h->cbuf.addr);
350 harmony_unmute(h);
351 harmony_enable_interrupts(h);
352 break;
353 case SNDRV_PCM_TRIGGER_STOP:
354 h->st.capturing = 0;
355 harmony_mute(h);
356 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
357 harmony_disable_interrupts(h);
358 break;
359 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
360 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
361 case SNDRV_PCM_TRIGGER_SUSPEND:
362 default:
363 spin_unlock_irqrestore(&h->lock, flags);
364 snd_BUG();
365 return -EINVAL;
366 }
367 spin_unlock_irqrestore(&h->lock, flags);
368
369 return 0;
370 }
371
372 static int
373 snd_harmony_set_data_format(harmony_t *h, int fmt, int force)
374 {
375 int o = h->st.format;
376 int n;
377
378 switch(fmt) {
379 case SNDRV_PCM_FORMAT_S16_BE:
380 n = HARMONY_DF_16BIT_LINEAR;
381 break;
382 case SNDRV_PCM_FORMAT_A_LAW:
383 n = HARMONY_DF_8BIT_ALAW;
384 break;
385 case SNDRV_PCM_FORMAT_MU_LAW:
386 n = HARMONY_DF_8BIT_ULAW;
387 break;
388 default:
389 n = HARMONY_DF_16BIT_LINEAR;
390 break;
391 }
392
393 if (force || o != n) {
394 snd_pcm_format_set_silence(fmt, h->sdma.area, SILENCE_BUFSZ /
395 (snd_pcm_format_physical_width(fmt)
396 / 8));
397 }
398
399 return n;
400 }
401
402 static int
403 snd_harmony_playback_prepare(snd_pcm_substream_t *ss)
404 {
405 harmony_t *h = snd_pcm_substream_chip(ss);
406 snd_pcm_runtime_t *rt = ss->runtime;
407
408 if (h->st.capturing)
409 return -EBUSY;
410
411 h->pbuf.size = snd_pcm_lib_buffer_bytes(ss);
412 h->pbuf.count = snd_pcm_lib_period_bytes(ss);
413 if (h->pbuf.buf >= h->pbuf.size)
414 h->pbuf.buf = 0;
415 h->st.playing = 0;
416
417 h->st.rate = snd_harmony_rate_bits(rt->rate);
418 h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
419
420 if (rt->channels == 2)
421 h->st.stereo = HARMONY_SS_STEREO;
422 else
423 h->st.stereo = HARMONY_SS_MONO;
424
425 harmony_set_control(h);
426
427 h->pbuf.addr = rt->dma_addr;
428
429 return 0;
430 }
431
432 static int
433 snd_harmony_capture_prepare(snd_pcm_substream_t *ss)
434 {
435 harmony_t *h = snd_pcm_substream_chip(ss);
436 snd_pcm_runtime_t *rt = ss->runtime;
437
438 if (h->st.playing)
439 return -EBUSY;
440
441 h->cbuf.size = snd_pcm_lib_buffer_bytes(ss);
442 h->cbuf.count = snd_pcm_lib_period_bytes(ss);
443 if (h->cbuf.buf >= h->cbuf.size)
444 h->cbuf.buf = 0;
445 h->st.capturing = 0;
446
447 h->st.rate = snd_harmony_rate_bits(rt->rate);
448 h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
449
450 if (rt->channels == 2)
451 h->st.stereo = HARMONY_SS_STEREO;
452 else
453 h->st.stereo = HARMONY_SS_MONO;
454
455 harmony_set_control(h);
456
457 h->cbuf.addr = rt->dma_addr;
458
459 return 0;
460 }
461
462 static snd_pcm_uframes_t
463 snd_harmony_playback_pointer(snd_pcm_substream_t *ss)
464 {
465 snd_pcm_runtime_t *rt = ss->runtime;
466 harmony_t *h = snd_pcm_substream_chip(ss);
467 unsigned long pcuradd;
468 unsigned long played;
469
470 if (!(h->st.playing) || (h->psubs == NULL))
471 return 0;
472
473 if ((h->pbuf.addr == 0) || (h->pbuf.size == 0))
474 return 0;
475
476 pcuradd = harmony_read(h, HARMONY_PCURADD);
477 played = pcuradd - h->pbuf.addr;
478
479 #ifdef HARMONY_DEBUG
480 printk(KERN_DEBUG PFX "playback_pointer is 0x%lx-0x%lx = %d bytes\n",
481 pcuradd, h->pbuf.addr, played);
482 #endif
483
484 if (pcuradd > h->pbuf.addr + h->pbuf.size) {
485 return 0;
486 }
487
488 return bytes_to_frames(rt, played);
489 }
490
491 static snd_pcm_uframes_t
492 snd_harmony_capture_pointer(snd_pcm_substream_t *ss)
493 {
494 snd_pcm_runtime_t *rt = ss->runtime;
495 harmony_t *h = snd_pcm_substream_chip(ss);
496 unsigned long rcuradd;
497 unsigned long caught;
498
499 if (!(h->st.capturing) || (h->csubs == NULL))
500 return 0;
501
502 if ((h->cbuf.addr == 0) || (h->cbuf.size == 0))
503 return 0;
504
505 rcuradd = harmony_read(h, HARMONY_RCURADD);
506 caught = rcuradd - h->cbuf.addr;
507
508 #ifdef HARMONY_DEBUG
509 printk(KERN_DEBUG PFX "capture_pointer is 0x%lx-0x%lx = %d bytes\n",
510 rcuradd, h->cbuf.addr, caught);
511 #endif
512
513 if (rcuradd > h->cbuf.addr + h->cbuf.size) {
514 return 0;
515 }
516
517 return bytes_to_frames(rt, caught);
518 }
519
520 static int
521 snd_harmony_playback_open(snd_pcm_substream_t *ss)
522 {
523 harmony_t *h = snd_pcm_substream_chip(ss);
524 snd_pcm_runtime_t *rt = ss->runtime;
525 int err;
526
527 h->psubs = ss;
528 rt->hw = snd_harmony_playback;
529 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE,
530 &hw_constraint_rates);
531
532 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
533 if (err < 0)
534 return err;
535
536 return 0;
537 }
538
539 static int
540 snd_harmony_capture_open(snd_pcm_substream_t *ss)
541 {
542 harmony_t *h = snd_pcm_substream_chip(ss);
543 snd_pcm_runtime_t *rt = ss->runtime;
544 int err;
545
546 h->csubs = ss;
547 rt->hw = snd_harmony_capture;
548 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE,
549 &hw_constraint_rates);
550
551 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
552 if (err < 0)
553 return err;
554
555 return 0;
556 }
557
558 static int
559 snd_harmony_playback_close(snd_pcm_substream_t *ss)
560 {
561 harmony_t *h = snd_pcm_substream_chip(ss);
562 h->psubs = NULL;
563 return 0;
564 }
565
566 static int
567 snd_harmony_capture_close(snd_pcm_substream_t *ss)
568 {
569 harmony_t *h = snd_pcm_substream_chip(ss);
570 h->csubs = NULL;
571 return 0;
572 }
573
574 static int
575 snd_harmony_hw_params(snd_pcm_substream_t *ss,
576 snd_pcm_hw_params_t *hw)
577 {
578 int err;
579 harmony_t *h = snd_pcm_substream_chip(ss);
580
581 err = snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw));
582 if (err > 0 && h->dma.type == SNDRV_DMA_TYPE_CONTINUOUS)
583 ss->runtime->dma_addr = __pa(ss->runtime->dma_area);
584
585 return err;
586 }
587
588 static int
589 snd_harmony_hw_free(snd_pcm_substream_t *ss)
590 {
591 return snd_pcm_lib_free_pages(ss);
592 }
593
594 static snd_pcm_ops_t snd_harmony_playback_ops = {
595 .open = snd_harmony_playback_open,
596 .close = snd_harmony_playback_close,
597 .ioctl = snd_pcm_lib_ioctl,
598 .hw_params = snd_harmony_hw_params,
599 .hw_free = snd_harmony_hw_free,
600 .prepare = snd_harmony_playback_prepare,
601 .trigger = snd_harmony_playback_trigger,
602 .pointer = snd_harmony_playback_pointer,
603 };
604
605 static snd_pcm_ops_t snd_harmony_capture_ops = {
606 .open = snd_harmony_capture_open,
607 .close = snd_harmony_capture_close,
608 .ioctl = snd_pcm_lib_ioctl,
609 .hw_params = snd_harmony_hw_params,
610 .hw_free = snd_harmony_hw_free,
611 .prepare = snd_harmony_capture_prepare,
612 .trigger = snd_harmony_capture_trigger,
613 .pointer = snd_harmony_capture_pointer,
614 };
615
616 static int
617 snd_harmony_pcm_init(harmony_t *h)
618 {
619 snd_pcm_t *pcm;
620 int err;
621
622 harmony_disable_interrupts(h);
623
624 err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm);
625 if (err < 0)
626 return err;
627
628 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
629 &snd_harmony_playback_ops);
630 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
631 &snd_harmony_capture_ops);
632
633 pcm->private_data = h;
634 pcm->info_flags = 0;
635 strcpy(pcm->name, "harmony");
636 h->pcm = pcm;
637
638 h->psubs = NULL;
639 h->csubs = NULL;
640
641 /* initialize graveyard buffer */
642 h->dma.type = SNDRV_DMA_TYPE_DEV;
643 h->dma.dev = &h->dev->dev;
644 err = snd_dma_alloc_pages(h->dma.type,
645 h->dma.dev,
646 BUF_SIZE*GRAVEYARD_BUFS,
647 &h->gdma);
648 if (err < 0) {
649 printk(KERN_ERR PFX "cannot allocate graveyard buffer!\n");
650 return err;
651 }
652
653 /* initialize silence buffers */
654 err = snd_dma_alloc_pages(h->dma.type,
655 h->dma.dev,
656 BUF_SIZE*SILENCE_BUFS,
657 &h->sdma);
658 if (err < 0) {
659 printk(KERN_ERR PFX "cannot allocate silence buffer!\n");
660 return err;
661 }
662
663 /* pre-allocate space for DMA */
664 err = snd_pcm_lib_preallocate_pages_for_all(pcm, h->dma.type,
665 h->dma.dev,
666 MAX_BUF_SIZE,
667 MAX_BUF_SIZE);
668 if (err < 0) {
669 printk(KERN_ERR PFX "buffer allocation error: %d\n", err);
670 return err;
671 }
672
673 h->st.format = snd_harmony_set_data_format(h,
674 SNDRV_PCM_FORMAT_S16_BE, 1);
675
676 return 0;
677 }
678
679 static void
680 snd_harmony_set_new_gain(harmony_t *h)
681 {
682 harmony_wait_for_control(h);
683 harmony_write(h, HARMONY_GAINCTL, h->st.gain);
684 }
685
686 static int
687 snd_harmony_mixercontrol_info(snd_kcontrol_t *kc,
688 snd_ctl_elem_info_t *uinfo)
689 {
690 int mask = (kc->private_value >> 16) & 0xff;
691 int left_shift = (kc->private_value) & 0xff;
692 int right_shift = (kc->private_value >> 8) & 0xff;
693
694 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN :
695 SNDRV_CTL_ELEM_TYPE_INTEGER;
696 uinfo->count = left_shift == right_shift ? 1 : 2;
697 uinfo->value.integer.min = 0;
698 uinfo->value.integer.max = mask;
699
700 return 0;
701 }
702
703 static int
704 snd_harmony_volume_get(snd_kcontrol_t *kc,
705 snd_ctl_elem_value_t *ucontrol)
706 {
707 harmony_t *h = snd_kcontrol_chip(kc);
708 int shift_left = (kc->private_value) & 0xff;
709 int shift_right = (kc->private_value >> 8) & 0xff;
710 int mask = (kc->private_value >> 16) & 0xff;
711 int invert = (kc->private_value >> 24) & 0xff;
712 int left, right;
713 unsigned long flags;
714
715 spin_lock_irqsave(&h->mixer_lock, flags);
716
717 left = (h->st.gain >> shift_left) & mask;
718 right = (h->st.gain >> shift_right) & mask;
719 if (invert) {
720 left = mask - left;
721 right = mask - right;
722 }
723
724 ucontrol->value.integer.value[0] = left;
725 if (shift_left != shift_right)
726 ucontrol->value.integer.value[1] = right;
727
728 spin_unlock_irqrestore(&h->mixer_lock, flags);
729
730 return 0;
731 }
732
733 static int
734 snd_harmony_volume_put(snd_kcontrol_t *kc,
735 snd_ctl_elem_value_t *ucontrol)
736 {
737 harmony_t *h = snd_kcontrol_chip(kc);
738 int shift_left = (kc->private_value) & 0xff;
739 int shift_right = (kc->private_value >> 8) & 0xff;
740 int mask = (kc->private_value >> 16) & 0xff;
741 int invert = (kc->private_value >> 24) & 0xff;
742 int left, right;
743 int old_gain = h->st.gain;
744 unsigned long flags;
745
746 spin_lock_irqsave(&h->mixer_lock, flags);
747
748 left = ucontrol->value.integer.value[0] & mask;
749 if (invert)
750 left = mask - left;
751 h->st.gain &= ~( (mask << shift_left ) );
752 h->st.gain |= (left << shift_left);
753
754 if (shift_left != shift_right) {
755 right = ucontrol->value.integer.value[1] & mask;
756 if (invert)
757 right = mask - right;
758 h->st.gain &= ~( (mask << shift_right) );
759 h->st.gain |= (right << shift_right);
760 }
761
762 snd_harmony_set_new_gain(h);
763
764 spin_unlock_irqrestore(&h->mixer_lock, flags);
765
766 return h->st.gain != old_gain;
767 }
768
769 static int
770 snd_harmony_captureroute_info(snd_kcontrol_t *kc,
771 snd_ctl_elem_info_t *uinfo)
772 {
773 static char *texts[2] = { "Line", "Mic" };
774 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
775 uinfo->count = 1;
776 uinfo->value.enumerated.items = 2;
777 if (uinfo->value.enumerated.item > 1)
778 uinfo->value.enumerated.item = 1;
779 strcpy(uinfo->value.enumerated.name,
780 texts[uinfo->value.enumerated.item]);
781 return 0;
782 }
783
784 static int
785 snd_harmony_captureroute_get(snd_kcontrol_t *kc,
786 snd_ctl_elem_value_t *ucontrol)
787 {
788 harmony_t *h = snd_kcontrol_chip(kc);
789 int value;
790 unsigned long flags;
791
792 spin_lock_irqsave(&h->mixer_lock, flags);
793
794 value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1;
795 ucontrol->value.enumerated.item[0] = value;
796
797 spin_unlock_irqrestore(&h->mixer_lock, flags);
798
799 return 0;
800 }
801
802 static int
803 snd_harmony_captureroute_put(snd_kcontrol_t *kc,
804 snd_ctl_elem_value_t *ucontrol)
805 {
806 harmony_t *h = snd_kcontrol_chip(kc);
807 int value;
808 int old_gain = h->st.gain;
809 unsigned long flags;
810
811 spin_lock_irqsave(&h->mixer_lock, flags);
812
813 value = ucontrol->value.enumerated.item[0] & 1;
814 h->st.gain &= ~HARMONY_GAIN_IS_MASK;
815 h->st.gain |= value << HARMONY_GAIN_IS_SHIFT;
816
817 snd_harmony_set_new_gain(h);
818
819 spin_unlock_irqrestore(&h->mixer_lock, flags);
820
821 return h->st.gain != old_gain;
822 }
823
824 #define HARMONY_CONTROLS (sizeof(snd_harmony_controls)/ \
825 sizeof(snd_kcontrol_new_t))
826
827 #define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \
828 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
829 .info = snd_harmony_mixercontrol_info, \
830 .get = snd_harmony_volume_get, .put = snd_harmony_volume_put, \
831 .private_value = ((left_shift) | ((right_shift) << 8) | \
832 ((mask) << 16) | ((invert) << 24)) }
833
834 static snd_kcontrol_new_t snd_harmony_controls[] = {
835 HARMONY_VOLUME("Master Playback Volume", HARMONY_GAIN_LO_SHIFT,
836 HARMONY_GAIN_RO_SHIFT, HARMONY_GAIN_OUT, 1),
837 HARMONY_VOLUME("Capture Volume", HARMONY_GAIN_LI_SHIFT,
838 HARMONY_GAIN_RI_SHIFT, HARMONY_GAIN_IN, 0),
839 HARMONY_VOLUME("Monitor Volume", HARMONY_GAIN_MA_SHIFT,
840 HARMONY_GAIN_MA_SHIFT, HARMONY_GAIN_MA, 1),
841 {
842 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
843 .name = "Input Route",
844 .info = snd_harmony_captureroute_info,
845 .get = snd_harmony_captureroute_get,
846 .put = snd_harmony_captureroute_put
847 },
848 HARMONY_VOLUME("Internal Speaker Switch", HARMONY_GAIN_SE_SHIFT,
849 HARMONY_GAIN_SE_SHIFT, 1, 0),
850 HARMONY_VOLUME("Line-Out Switch", HARMONY_GAIN_LE_SHIFT,
851 HARMONY_GAIN_LE_SHIFT, 1, 0),
852 HARMONY_VOLUME("Headphones Switch", HARMONY_GAIN_HE_SHIFT,
853 HARMONY_GAIN_HE_SHIFT, 1, 0),
854 };
855
856 static void __init
857 snd_harmony_mixer_reset(harmony_t *h)
858 {
859 harmony_mute(h);
860 harmony_reset(h);
861 h->st.gain = HARMONY_GAIN_DEFAULT;
862 harmony_unmute(h);
863 }
864
865 static int __init
866 snd_harmony_mixer_init(harmony_t *h)
867 {
868 snd_card_t *card = h->card;
869 int idx, err;
870
871 snd_assert(h != NULL, return -EINVAL);
872 strcpy(card->mixername, "Harmony Gain control interface");
873
874 for (idx = 0; idx < HARMONY_CONTROLS; idx++) {
875 err = snd_ctl_add(card,
876 snd_ctl_new1(&snd_harmony_controls[idx], h));
877 if (err < 0)
878 return err;
879 }
880
881 snd_harmony_mixer_reset(h);
882
883 return 0;
884 }
885
886 static int
887 snd_harmony_free(harmony_t *h)
888 {
889 if (h->gdma.addr)
890 snd_dma_free_pages(&h->gdma);
891 if (h->sdma.addr)
892 snd_dma_free_pages(&h->sdma);
893
894 if (h->irq >= 0)
895 free_irq(h->irq, h);
896
897 if (h->iobase)
898 iounmap(h->iobase);
899
900 parisc_set_drvdata(h->dev, NULL);
901
902 kfree(h);
903 return 0;
904 }
905
906 static int
907 snd_harmony_dev_free(snd_device_t *dev)
908 {
909 harmony_t *h = dev->device_data;
910 return snd_harmony_free(h);
911 }
912
913 static int __devinit
914 snd_harmony_create(snd_card_t *card,
915 struct parisc_device *padev,
916 harmony_t **rchip)
917 {
918 int err;
919 harmony_t *h;
920 static snd_device_ops_t ops = {
921 .dev_free = snd_harmony_dev_free,
922 };
923
924 *rchip = NULL;
925
926 h = kmalloc(sizeof(*h), GFP_KERNEL);
927 if (h == NULL)
928 return -ENOMEM;
929
930 memset(&h->st, 0, sizeof(h->st));
931 memset(&h->stats, 0, sizeof(h->stats));
932 memset(&h->pbuf, 0, sizeof(h->pbuf));
933 memset(&h->cbuf, 0, sizeof(h->cbuf));
934
935 h->hpa = padev->hpa.start;
936 h->card = card;
937 h->dev = padev;
938 h->irq = padev->irq;
939 h->iobase = ioremap_nocache(padev->hpa.start, HARMONY_SIZE);
940 if (h->iobase == NULL) {
941 printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n",
942 padev->hpa.start);
943 err = -EBUSY;
944 goto free_and_ret;
945 }
946
947 err = request_irq(h->irq, snd_harmony_interrupt, 0,
948 "harmony", h);
949 if (err) {
950 printk(KERN_ERR PFX "could not obtain interrupt %d",
951 h->irq);
952 goto free_and_ret;
953 }
954
955 spin_lock_init(&h->mixer_lock);
956 spin_lock_init(&h->lock);
957
958 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
959 h, &ops)) < 0) {
960 goto free_and_ret;
961 }
962
963 snd_card_set_dev(card, &padev->dev);
964
965 *rchip = h;
966
967 return 0;
968
969 free_and_ret:
970 snd_harmony_free(h);
971 return err;
972 }
973
974 static int __devinit
975 snd_harmony_probe(struct parisc_device *padev)
976 {
977 int err;
978 static int dev;
979 snd_card_t *card;
980 harmony_t *h;
981 static int index = SNDRV_DEFAULT_IDX1;
982 static char *id = SNDRV_DEFAULT_STR1;
983
984 h = parisc_get_drvdata(padev);
985 if (h != NULL) {
986 return -ENODEV;
987 }
988
989 card = snd_card_new(index, id, THIS_MODULE, 0);
990 if (card == NULL)
991 return -ENOMEM;
992
993 err = snd_harmony_create(card, padev, &h);
994 if (err < 0) {
995 goto free_and_ret;
996 }
997
998 err = snd_harmony_pcm_init(h);
999 if (err < 0) {
1000 goto free_and_ret;
1001 }
1002
1003 err = snd_harmony_mixer_init(h);
1004 if (err < 0) {
1005 goto free_and_ret;
1006 }
1007
1008 strcpy(card->driver, "harmony");
1009 strcpy(card->shortname, "Harmony");
1010 sprintf(card->longname, "%s at 0x%lx, irq %i",
1011 card->shortname, h->hpa, h->irq);
1012
1013 err = snd_card_register(card);
1014 if (err < 0) {
1015 goto free_and_ret;
1016 }
1017
1018 dev++;
1019 parisc_set_drvdata(padev, h);
1020
1021 return 0;
1022
1023 free_and_ret:
1024 snd_card_free(card);
1025 return err;
1026 }
1027
1028 static int __devexit
1029 snd_harmony_remove(struct parisc_device *padev)
1030 {
1031 harmony_t *h = parisc_get_drvdata(padev);
1032 snd_card_free(h->card);
1033 return 0;
1034 }
1035
1036 static struct parisc_driver snd_harmony_driver = {
1037 .name = "harmony",
1038 .id_table = snd_harmony_devtable,
1039 .probe = snd_harmony_probe,
1040 .remove = snd_harmony_remove,
1041 };
1042
1043 static int __init
1044 alsa_harmony_init(void)
1045 {
1046 int err;
1047
1048 err = register_parisc_driver(&snd_harmony_driver);
1049 if (err < 0) {
1050 printk(KERN_ERR PFX "device not found\n");
1051 return err;
1052 }
1053
1054 return 0;
1055 }
1056
1057 static void __exit
1058 alsa_harmony_fini(void)
1059 {
1060 int err;
1061
1062 err = unregister_parisc_driver(&snd_harmony_driver);
1063 if (err < 0) {
1064 printk(KERN_ERR PFX "failed to unregister\n");
1065 }
1066
1067 return;
1068 }
1069
1070 MODULE_LICENSE("GPL");
1071 MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>");
1072 MODULE_DESCRIPTION("Harmony sound driver");
1073
1074 module_init(alsa_harmony_init);
1075 module_exit(alsa_harmony_fini);
Linux with added FPC-III support