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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#include <linux/io.h>
48
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/hardware.h>
57#include <asm/parisc-device.h>
58
59#include "harmony.h"
60
61static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
62static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
63module_param(index, int, 0444);
64MODULE_PARM_DESC(index, "Index value for Harmony driver.");
65module_param(id, charp, 0444);
66MODULE_PARM_DESC(id, "ID string for Harmony driver.");
67
68
69static struct parisc_device_id snd_harmony_devtable[] = {
70 /* bushmaster / flounder */
71 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A },
72 /* 712 / 715 */
73 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007B },
74 /* pace */
75 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007E },
76 /* outfield / coral II */
77 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007F },
78 { 0, }
79};
80
81MODULE_DEVICE_TABLE(parisc, snd_harmony_devtable);
82
83#define NAME "harmony"
84#define PFX NAME ": "
85
86static unsigned int snd_harmony_rates[] = {
87 5512, 6615, 8000, 9600,
88 11025, 16000, 18900, 22050,
89 27428, 32000, 33075, 37800,
90 44100, 48000
91};
92
93static unsigned int rate_bits[14] = {
94 HARMONY_SR_5KHZ, HARMONY_SR_6KHZ, HARMONY_SR_8KHZ,
95 HARMONY_SR_9KHZ, HARMONY_SR_11KHZ, HARMONY_SR_16KHZ,
96 HARMONY_SR_18KHZ, HARMONY_SR_22KHZ, HARMONY_SR_27KHZ,
97 HARMONY_SR_32KHZ, HARMONY_SR_33KHZ, HARMONY_SR_37KHZ,
98 HARMONY_SR_44KHZ, HARMONY_SR_48KHZ
99};
100
101static struct snd_pcm_hw_constraint_list hw_constraint_rates = {
102 .count = ARRAY_SIZE(snd_harmony_rates),
103 .list = snd_harmony_rates,
104 .mask = 0,
105};
106
107static inline unsigned long
108harmony_read(struct snd_harmony *h, unsigned r)
109{
110 return __raw_readl(h->iobase + r);
111}
112
113static inline void
114harmony_write(struct snd_harmony *h, unsigned r, unsigned long v)
115{
116 __raw_writel(v, h->iobase + r);
117}
118
119static inline void
120harmony_wait_for_control(struct snd_harmony *h)
121{
122 while (harmony_read(h, HARMONY_CNTL) & HARMONY_CNTL_C) ;
123}
124
125static inline void
126harmony_reset(struct snd_harmony *h)
127{
128 harmony_write(h, HARMONY_RESET, 1);
129 mdelay(50);
130 harmony_write(h, HARMONY_RESET, 0);
131}
132
133static void
134harmony_disable_interrupts(struct snd_harmony *h)
135{
136 u32 dstatus;
137 harmony_wait_for_control(h);
138 dstatus = harmony_read(h, HARMONY_DSTATUS);
139 dstatus &= ~HARMONY_DSTATUS_IE;
140 harmony_write(h, HARMONY_DSTATUS, dstatus);
141}
142
143static void
144harmony_enable_interrupts(struct snd_harmony *h)
145{
146 u32 dstatus;
147 harmony_wait_for_control(h);
148 dstatus = harmony_read(h, HARMONY_DSTATUS);
149 dstatus |= HARMONY_DSTATUS_IE;
150 harmony_write(h, HARMONY_DSTATUS, dstatus);
151}
152
153static void
154harmony_mute(struct snd_harmony *h)
155{
156 unsigned long flags;
157
158 spin_lock_irqsave(&h->mixer_lock, flags);
159 harmony_wait_for_control(h);
160 harmony_write(h, HARMONY_GAINCTL, HARMONY_GAIN_SILENCE);
161 spin_unlock_irqrestore(&h->mixer_lock, flags);
162}
163
164static void
165harmony_unmute(struct snd_harmony *h)
166{
167 unsigned long flags;
168
169 spin_lock_irqsave(&h->mixer_lock, flags);
170 harmony_wait_for_control(h);
171 harmony_write(h, HARMONY_GAINCTL, h->st.gain);
172 spin_unlock_irqrestore(&h->mixer_lock, flags);
173}
174
175static void
176harmony_set_control(struct snd_harmony *h)
177{
178 u32 ctrl;
179 unsigned long flags;
180
181 spin_lock_irqsave(&h->lock, flags);
182
183 ctrl = (HARMONY_CNTL_C |
184 (h->st.format << 6) |
185 (h->st.stereo << 5) |
186 (h->st.rate));
187
188 harmony_wait_for_control(h);
189 harmony_write(h, HARMONY_CNTL, ctrl);
190
191 spin_unlock_irqrestore(&h->lock, flags);
192}
193
194static irqreturn_t
195snd_harmony_interrupt(int irq, void *dev)
196{
197 u32 dstatus;
198 struct snd_harmony *h = dev;
199
200 spin_lock(&h->lock);
201 harmony_disable_interrupts(h);
202 harmony_wait_for_control(h);
203 dstatus = harmony_read(h, HARMONY_DSTATUS);
204 spin_unlock(&h->lock);
205
206 if (dstatus & HARMONY_DSTATUS_PN) {
207 if (h->psubs && h->st.playing) {
208 spin_lock(&h->lock);
209 h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */
210 h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */
211
212 harmony_write(h, HARMONY_PNXTADD,
213 h->pbuf.addr + h->pbuf.buf);
214 h->stats.play_intr++;
215 spin_unlock(&h->lock);
216 snd_pcm_period_elapsed(h->psubs);
217 } else {
218 spin_lock(&h->lock);
219 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
220 h->stats.silence_intr++;
221 spin_unlock(&h->lock);
222 }
223 }
224
225 if (dstatus & HARMONY_DSTATUS_RN) {
226 if (h->csubs && h->st.capturing) {
227 spin_lock(&h->lock);
228 h->cbuf.buf += h->cbuf.count;
229 h->cbuf.buf %= h->cbuf.size;
230
231 harmony_write(h, HARMONY_RNXTADD,
232 h->cbuf.addr + h->cbuf.buf);
233 h->stats.rec_intr++;
234 spin_unlock(&h->lock);
235 snd_pcm_period_elapsed(h->csubs);
236 } else {
237 spin_lock(&h->lock);
238 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
239 h->stats.graveyard_intr++;
240 spin_unlock(&h->lock);
241 }
242 }
243
244 spin_lock(&h->lock);
245 harmony_enable_interrupts(h);
246 spin_unlock(&h->lock);
247
248 return IRQ_HANDLED;
249}
250
251static unsigned int
252snd_harmony_rate_bits(int rate)
253{
254 unsigned int i;
255
256 for (i = 0; i < ARRAY_SIZE(snd_harmony_rates); i++)
257 if (snd_harmony_rates[i] == rate)
258 return rate_bits[i];
259
260 return HARMONY_SR_44KHZ;
261}
262
263static struct snd_pcm_hardware snd_harmony_playback =
264{
265 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
266 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
267 SNDRV_PCM_INFO_BLOCK_TRANSFER),
268 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
269 SNDRV_PCM_FMTBIT_A_LAW),
270 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
271 SNDRV_PCM_RATE_KNOT),
272 .rate_min = 5512,
273 .rate_max = 48000,
274 .channels_min = 1,
275 .channels_max = 2,
276 .buffer_bytes_max = MAX_BUF_SIZE,
277 .period_bytes_min = BUF_SIZE,
278 .period_bytes_max = BUF_SIZE,
279 .periods_min = 1,
280 .periods_max = MAX_BUFS,
281 .fifo_size = 0,
282};
283
284static struct snd_pcm_hardware snd_harmony_capture =
285{
286 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
287 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
288 SNDRV_PCM_INFO_BLOCK_TRANSFER),
289 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
290 SNDRV_PCM_FMTBIT_A_LAW),
291 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
292 SNDRV_PCM_RATE_KNOT),
293 .rate_min = 5512,
294 .rate_max = 48000,
295 .channels_min = 1,
296 .channels_max = 2,
297 .buffer_bytes_max = MAX_BUF_SIZE,
298 .period_bytes_min = BUF_SIZE,
299 .period_bytes_max = BUF_SIZE,
300 .periods_min = 1,
301 .periods_max = MAX_BUFS,
302 .fifo_size = 0,
303};
304
305static int
306snd_harmony_playback_trigger(struct snd_pcm_substream *ss, int cmd)
307{
308 struct snd_harmony *h = snd_pcm_substream_chip(ss);
309
310 if (h->st.capturing)
311 return -EBUSY;
312
313 spin_lock(&h->lock);
314 switch (cmd) {
315 case SNDRV_PCM_TRIGGER_START:
316 h->st.playing = 1;
317 harmony_write(h, HARMONY_PNXTADD, h->pbuf.addr);
318 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
319 harmony_unmute(h);
320 harmony_enable_interrupts(h);
321 break;
322 case SNDRV_PCM_TRIGGER_STOP:
323 h->st.playing = 0;
324 harmony_mute(h);
325 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
326 harmony_disable_interrupts(h);
327 break;
328 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
329 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
330 case SNDRV_PCM_TRIGGER_SUSPEND:
331 default:
332 spin_unlock(&h->lock);
333 snd_BUG();
334 return -EINVAL;
335 }
336 spin_unlock(&h->lock);
337
338 return 0;
339}
340
341static int
342snd_harmony_capture_trigger(struct snd_pcm_substream *ss, int cmd)
343{
344 struct snd_harmony *h = snd_pcm_substream_chip(ss);
345
346 if (h->st.playing)
347 return -EBUSY;
348
349 spin_lock(&h->lock);
350 switch (cmd) {
351 case SNDRV_PCM_TRIGGER_START:
352 h->st.capturing = 1;
353 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
354 harmony_write(h, HARMONY_RNXTADD, h->cbuf.addr);
355 harmony_unmute(h);
356 harmony_enable_interrupts(h);
357 break;
358 case SNDRV_PCM_TRIGGER_STOP:
359 h->st.capturing = 0;
360 harmony_mute(h);
361 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
362 harmony_disable_interrupts(h);
363 break;
364 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
365 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
366 case SNDRV_PCM_TRIGGER_SUSPEND:
367 default:
368 spin_unlock(&h->lock);
369 snd_BUG();
370 return -EINVAL;
371 }
372 spin_unlock(&h->lock);
373
374 return 0;
375}
376
377static int
378snd_harmony_set_data_format(struct snd_harmony *h, int fmt, int force)
379{
380 int o = h->st.format;
381 int n;
382
383 switch(fmt) {
384 case SNDRV_PCM_FORMAT_S16_BE:
385 n = HARMONY_DF_16BIT_LINEAR;
386 break;
387 case SNDRV_PCM_FORMAT_A_LAW:
388 n = HARMONY_DF_8BIT_ALAW;
389 break;
390 case SNDRV_PCM_FORMAT_MU_LAW:
391 n = HARMONY_DF_8BIT_ULAW;
392 break;
393 default:
394 n = HARMONY_DF_16BIT_LINEAR;
395 break;
396 }
397
398 if (force || o != n) {
399 snd_pcm_format_set_silence(fmt, h->sdma.area, SILENCE_BUFSZ /
400 (snd_pcm_format_physical_width(fmt)
401 / 8));
402 }
403
404 return n;
405}
406
407static int
408snd_harmony_playback_prepare(struct snd_pcm_substream *ss)
409{
410 struct snd_harmony *h = snd_pcm_substream_chip(ss);
411 struct snd_pcm_runtime *rt = ss->runtime;
412
413 if (h->st.capturing)
414 return -EBUSY;
415
416 h->pbuf.size = snd_pcm_lib_buffer_bytes(ss);
417 h->pbuf.count = snd_pcm_lib_period_bytes(ss);
418 if (h->pbuf.buf >= h->pbuf.size)
419 h->pbuf.buf = 0;
420 h->st.playing = 0;
421
422 h->st.rate = snd_harmony_rate_bits(rt->rate);
423 h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
424
425 if (rt->channels == 2)
426 h->st.stereo = HARMONY_SS_STEREO;
427 else
428 h->st.stereo = HARMONY_SS_MONO;
429
430 harmony_set_control(h);
431
432 h->pbuf.addr = rt->dma_addr;
433
434 return 0;
435}
436
437static int
438snd_harmony_capture_prepare(struct snd_pcm_substream *ss)
439{
440 struct snd_harmony *h = snd_pcm_substream_chip(ss);
441 struct snd_pcm_runtime *rt = ss->runtime;
442
443 if (h->st.playing)
444 return -EBUSY;
445
446 h->cbuf.size = snd_pcm_lib_buffer_bytes(ss);
447 h->cbuf.count = snd_pcm_lib_period_bytes(ss);
448 if (h->cbuf.buf >= h->cbuf.size)
449 h->cbuf.buf = 0;
450 h->st.capturing = 0;
451
452 h->st.rate = snd_harmony_rate_bits(rt->rate);
453 h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
454
455 if (rt->channels == 2)
456 h->st.stereo = HARMONY_SS_STEREO;
457 else
458 h->st.stereo = HARMONY_SS_MONO;
459
460 harmony_set_control(h);
461
462 h->cbuf.addr = rt->dma_addr;
463
464 return 0;
465}
466
467static snd_pcm_uframes_t
468snd_harmony_playback_pointer(struct snd_pcm_substream *ss)
469{
470 struct snd_pcm_runtime *rt = ss->runtime;
471 struct snd_harmony *h = snd_pcm_substream_chip(ss);
472 unsigned long pcuradd;
473 unsigned long played;
474
475 if (!(h->st.playing) || (h->psubs == NULL))
476 return 0;
477
478 if ((h->pbuf.addr == 0) || (h->pbuf.size == 0))
479 return 0;
480
481 pcuradd = harmony_read(h, HARMONY_PCURADD);
482 played = pcuradd - h->pbuf.addr;
483
484#ifdef HARMONY_DEBUG
485 printk(KERN_DEBUG PFX "playback_pointer is 0x%lx-0x%lx = %d bytes\n",
486 pcuradd, h->pbuf.addr, played);
487#endif
488
489 if (pcuradd > h->pbuf.addr + h->pbuf.size) {
490 return 0;
491 }
492
493 return bytes_to_frames(rt, played);
494}
495
496static snd_pcm_uframes_t
497snd_harmony_capture_pointer(struct snd_pcm_substream *ss)
498{
499 struct snd_pcm_runtime *rt = ss->runtime;
500 struct snd_harmony *h = snd_pcm_substream_chip(ss);
501 unsigned long rcuradd;
502 unsigned long caught;
503
504 if (!(h->st.capturing) || (h->csubs == NULL))
505 return 0;
506
507 if ((h->cbuf.addr == 0) || (h->cbuf.size == 0))
508 return 0;
509
510 rcuradd = harmony_read(h, HARMONY_RCURADD);
511 caught = rcuradd - h->cbuf.addr;
512
513#ifdef HARMONY_DEBUG
514 printk(KERN_DEBUG PFX "capture_pointer is 0x%lx-0x%lx = %d bytes\n",
515 rcuradd, h->cbuf.addr, caught);
516#endif
517
518 if (rcuradd > h->cbuf.addr + h->cbuf.size) {
519 return 0;
520 }
521
522 return bytes_to_frames(rt, caught);
523}
524
525static int
526snd_harmony_playback_open(struct snd_pcm_substream *ss)
527{
528 struct snd_harmony *h = snd_pcm_substream_chip(ss);
529 struct snd_pcm_runtime *rt = ss->runtime;
530 int err;
531
532 h->psubs = ss;
533 rt->hw = snd_harmony_playback;
534 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE,
535 &hw_constraint_rates);
536
537 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
538 if (err < 0)
539 return err;
540
541 return 0;
542}
543
544static int
545snd_harmony_capture_open(struct snd_pcm_substream *ss)
546{
547 struct snd_harmony *h = snd_pcm_substream_chip(ss);
548 struct snd_pcm_runtime *rt = ss->runtime;
549 int err;
550
551 h->csubs = ss;
552 rt->hw = snd_harmony_capture;
553 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE,
554 &hw_constraint_rates);
555
556 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
557 if (err < 0)
558 return err;
559
560 return 0;
561}
562
563static int
564snd_harmony_playback_close(struct snd_pcm_substream *ss)
565{
566 struct snd_harmony *h = snd_pcm_substream_chip(ss);
567 h->psubs = NULL;
568 return 0;
569}
570
571static int
572snd_harmony_capture_close(struct snd_pcm_substream *ss)
573{
574 struct snd_harmony *h = snd_pcm_substream_chip(ss);
575 h->csubs = NULL;
576 return 0;
577}
578
579static int
580snd_harmony_hw_params(struct snd_pcm_substream *ss,
581 struct snd_pcm_hw_params *hw)
582{
583 int err;
584 struct snd_harmony *h = snd_pcm_substream_chip(ss);
585
586 err = snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw));
587 if (err > 0 && h->dma.type == SNDRV_DMA_TYPE_CONTINUOUS)
588 ss->runtime->dma_addr = __pa(ss->runtime->dma_area);
589
590 return err;
591}
592
593static int
594snd_harmony_hw_free(struct snd_pcm_substream *ss)
595{
596 return snd_pcm_lib_free_pages(ss);
597}
598
599static struct snd_pcm_ops snd_harmony_playback_ops = {
600 .open = snd_harmony_playback_open,
601 .close = snd_harmony_playback_close,
602 .ioctl = snd_pcm_lib_ioctl,
603 .hw_params = snd_harmony_hw_params,
604 .hw_free = snd_harmony_hw_free,
605 .prepare = snd_harmony_playback_prepare,
606 .trigger = snd_harmony_playback_trigger,
607 .pointer = snd_harmony_playback_pointer,
608};
609
610static struct snd_pcm_ops snd_harmony_capture_ops = {
611 .open = snd_harmony_capture_open,
612 .close = snd_harmony_capture_close,
613 .ioctl = snd_pcm_lib_ioctl,
614 .hw_params = snd_harmony_hw_params,
615 .hw_free = snd_harmony_hw_free,
616 .prepare = snd_harmony_capture_prepare,
617 .trigger = snd_harmony_capture_trigger,
618 .pointer = snd_harmony_capture_pointer,
619};
620
621static int
622snd_harmony_pcm_init(struct snd_harmony *h)
623{
624 struct snd_pcm *pcm;
625 int err;
626
627 if (snd_BUG_ON(!h))
628 return -EINVAL;
629
630 harmony_disable_interrupts(h);
631
632 err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm);
633 if (err < 0)
634 return err;
635
636 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
637 &snd_harmony_playback_ops);
638 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
639 &snd_harmony_capture_ops);
640
641 pcm->private_data = h;
642 pcm->info_flags = 0;
643 strcpy(pcm->name, "harmony");
644 h->pcm = pcm;
645
646 h->psubs = NULL;
647 h->csubs = NULL;
648
649 /* initialize graveyard buffer */
650 h->dma.type = SNDRV_DMA_TYPE_DEV;
651 h->dma.dev = &h->dev->dev;
652 err = snd_dma_alloc_pages(h->dma.type,
653 h->dma.dev,
654 BUF_SIZE*GRAVEYARD_BUFS,
655 &h->gdma);
656 if (err < 0) {
657 printk(KERN_ERR PFX "cannot allocate graveyard buffer!\n");
658 return err;
659 }
660
661 /* initialize silence buffers */
662 err = snd_dma_alloc_pages(h->dma.type,
663 h->dma.dev,
664 BUF_SIZE*SILENCE_BUFS,
665 &h->sdma);
666 if (err < 0) {
667 printk(KERN_ERR PFX "cannot allocate silence buffer!\n");
668 return err;
669 }
670
671 /* pre-allocate space for DMA */
672 err = snd_pcm_lib_preallocate_pages_for_all(pcm, h->dma.type,
673 h->dma.dev,
674 MAX_BUF_SIZE,
675 MAX_BUF_SIZE);
676 if (err < 0) {
677 printk(KERN_ERR PFX "buffer allocation error: %d\n", err);
678 return err;
679 }
680
681 h->st.format = snd_harmony_set_data_format(h,
682 SNDRV_PCM_FORMAT_S16_BE, 1);
683
684 return 0;
685}
686
687static void
688snd_harmony_set_new_gain(struct snd_harmony *h)
689{
690 harmony_wait_for_control(h);
691 harmony_write(h, HARMONY_GAINCTL, h->st.gain);
692}
693
694static int
695snd_harmony_mixercontrol_info(struct snd_kcontrol *kc,
696 struct snd_ctl_elem_info *uinfo)
697{
698 int mask = (kc->private_value >> 16) & 0xff;
699 int left_shift = (kc->private_value) & 0xff;
700 int right_shift = (kc->private_value >> 8) & 0xff;
701
702 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN :
703 SNDRV_CTL_ELEM_TYPE_INTEGER;
704 uinfo->count = left_shift == right_shift ? 1 : 2;
705 uinfo->value.integer.min = 0;
706 uinfo->value.integer.max = mask;
707
708 return 0;
709}
710
711static int
712snd_harmony_volume_get(struct snd_kcontrol *kc,
713 struct snd_ctl_elem_value *ucontrol)
714{
715 struct snd_harmony *h = snd_kcontrol_chip(kc);
716 int shift_left = (kc->private_value) & 0xff;
717 int shift_right = (kc->private_value >> 8) & 0xff;
718 int mask = (kc->private_value >> 16) & 0xff;
719 int invert = (kc->private_value >> 24) & 0xff;
720 int left, right;
721
722 spin_lock_irq(&h->mixer_lock);
723
724 left = (h->st.gain >> shift_left) & mask;
725 right = (h->st.gain >> shift_right) & mask;
726 if (invert) {
727 left = mask - left;
728 right = mask - right;
729 }
730
731 ucontrol->value.integer.value[0] = left;
732 if (shift_left != shift_right)
733 ucontrol->value.integer.value[1] = right;
734
735 spin_unlock_irq(&h->mixer_lock);
736
737 return 0;
738}
739
740static int
741snd_harmony_volume_put(struct snd_kcontrol *kc,
742 struct snd_ctl_elem_value *ucontrol)
743{
744 struct snd_harmony *h = snd_kcontrol_chip(kc);
745 int shift_left = (kc->private_value) & 0xff;
746 int shift_right = (kc->private_value >> 8) & 0xff;
747 int mask = (kc->private_value >> 16) & 0xff;
748 int invert = (kc->private_value >> 24) & 0xff;
749 int left, right;
750 int old_gain = h->st.gain;
751
752 spin_lock_irq(&h->mixer_lock);
753
754 left = ucontrol->value.integer.value[0] & mask;
755 if (invert)
756 left = mask - left;
757 h->st.gain &= ~( (mask << shift_left ) );
758 h->st.gain |= (left << shift_left);
759
760 if (shift_left != shift_right) {
761 right = ucontrol->value.integer.value[1] & mask;
762 if (invert)
763 right = mask - right;
764 h->st.gain &= ~( (mask << shift_right) );
765 h->st.gain |= (right << shift_right);
766 }
767
768 snd_harmony_set_new_gain(h);
769
770 spin_unlock_irq(&h->mixer_lock);
771
772 return h->st.gain != old_gain;
773}
774
775static int
776snd_harmony_captureroute_info(struct snd_kcontrol *kc,
777 struct snd_ctl_elem_info *uinfo)
778{
779 static const char * const texts[2] = { "Line", "Mic" };
780
781 return snd_ctl_enum_info(uinfo, 1, 2, texts);
782}
783
784static int
785snd_harmony_captureroute_get(struct snd_kcontrol *kc,
786 struct snd_ctl_elem_value *ucontrol)
787{
788 struct snd_harmony *h = snd_kcontrol_chip(kc);
789 int value;
790
791 spin_lock_irq(&h->mixer_lock);
792
793 value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1;
794 ucontrol->value.enumerated.item[0] = value;
795
796 spin_unlock_irq(&h->mixer_lock);
797
798 return 0;
799}
800
801static int
802snd_harmony_captureroute_put(struct snd_kcontrol *kc,
803 struct snd_ctl_elem_value *ucontrol)
804{
805 struct snd_harmony *h = snd_kcontrol_chip(kc);
806 int value;
807 int old_gain = h->st.gain;
808
809 spin_lock_irq(&h->mixer_lock);
810
811 value = ucontrol->value.enumerated.item[0] & 1;
812 h->st.gain &= ~HARMONY_GAIN_IS_MASK;
813 h->st.gain |= value << HARMONY_GAIN_IS_SHIFT;
814
815 snd_harmony_set_new_gain(h);
816
817 spin_unlock_irq(&h->mixer_lock);
818
819 return h->st.gain != old_gain;
820}
821
822#define HARMONY_CONTROLS ARRAY_SIZE(snd_harmony_controls)
823
824#define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \
825{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
826 .info = snd_harmony_mixercontrol_info, \
827 .get = snd_harmony_volume_get, .put = snd_harmony_volume_put, \
828 .private_value = ((left_shift) | ((right_shift) << 8) | \
829 ((mask) << 16) | ((invert) << 24)) }
830
831static struct snd_kcontrol_new snd_harmony_controls[] = {
832 HARMONY_VOLUME("Master Playback Volume", HARMONY_GAIN_LO_SHIFT,
833 HARMONY_GAIN_RO_SHIFT, HARMONY_GAIN_OUT, 1),
834 HARMONY_VOLUME("Capture Volume", HARMONY_GAIN_LI_SHIFT,
835 HARMONY_GAIN_RI_SHIFT, HARMONY_GAIN_IN, 0),
836 HARMONY_VOLUME("Monitor Volume", HARMONY_GAIN_MA_SHIFT,
837 HARMONY_GAIN_MA_SHIFT, HARMONY_GAIN_MA, 1),
838 {
839 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
840 .name = "Input Route",
841 .info = snd_harmony_captureroute_info,
842 .get = snd_harmony_captureroute_get,
843 .put = snd_harmony_captureroute_put
844 },
845 HARMONY_VOLUME("Internal Speaker Switch", HARMONY_GAIN_SE_SHIFT,
846 HARMONY_GAIN_SE_SHIFT, 1, 0),
847 HARMONY_VOLUME("Line-Out Switch", HARMONY_GAIN_LE_SHIFT,
848 HARMONY_GAIN_LE_SHIFT, 1, 0),
849 HARMONY_VOLUME("Headphones Switch", HARMONY_GAIN_HE_SHIFT,
850 HARMONY_GAIN_HE_SHIFT, 1, 0),
851};
852
853static void
854snd_harmony_mixer_reset(struct snd_harmony *h)
855{
856 harmony_mute(h);
857 harmony_reset(h);
858 h->st.gain = HARMONY_GAIN_DEFAULT;
859 harmony_unmute(h);
860}
861
862static int
863snd_harmony_mixer_init(struct snd_harmony *h)
864{
865 struct snd_card *card;
866 int idx, err;
867
868 if (snd_BUG_ON(!h))
869 return -EINVAL;
870 card = h->card;
871 strcpy(card->mixername, "Harmony Gain control interface");
872
873 for (idx = 0; idx < HARMONY_CONTROLS; idx++) {
874 err = snd_ctl_add(card,
875 snd_ctl_new1(&snd_harmony_controls[idx], h));
876 if (err < 0)
877 return err;
878 }
879
880 snd_harmony_mixer_reset(h);
881
882 return 0;
883}
884
885static int
886snd_harmony_free(struct snd_harmony *h)
887{
888 if (h->gdma.addr)
889 snd_dma_free_pages(&h->gdma);
890 if (h->sdma.addr)
891 snd_dma_free_pages(&h->sdma);
892
893 if (h->irq >= 0)
894 free_irq(h->irq, h);
895
896 iounmap(h->iobase);
897 kfree(h);
898 return 0;
899}
900
901static int
902snd_harmony_dev_free(struct snd_device *dev)
903{
904 struct snd_harmony *h = dev->device_data;
905 return snd_harmony_free(h);
906}
907
908static int
909snd_harmony_create(struct snd_card *card,
910 struct parisc_device *padev,
911 struct snd_harmony **rchip)
912{
913 int err;
914 struct snd_harmony *h;
915 static struct snd_device_ops ops = {
916 .dev_free = snd_harmony_dev_free,
917 };
918
919 *rchip = NULL;
920
921 h = kzalloc(sizeof(*h), GFP_KERNEL);
922 if (h == NULL)
923 return -ENOMEM;
924
925 h->hpa = padev->hpa.start;
926 h->card = card;
927 h->dev = padev;
928 h->irq = -1;
929 h->iobase = ioremap_nocache(padev->hpa.start, HARMONY_SIZE);
930 if (h->iobase == NULL) {
931 printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n",
932 (unsigned long)padev->hpa.start);
933 err = -EBUSY;
934 goto free_and_ret;
935 }
936
937 err = request_irq(padev->irq, snd_harmony_interrupt, 0,
938 "harmony", h);
939 if (err) {
940 printk(KERN_ERR PFX "could not obtain interrupt %d",
941 padev->irq);
942 goto free_and_ret;
943 }
944 h->irq = padev->irq;
945
946 spin_lock_init(&h->mixer_lock);
947 spin_lock_init(&h->lock);
948
949 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
950 h, &ops)) < 0) {
951 goto free_and_ret;
952 }
953
954 *rchip = h;
955
956 return 0;
957
958free_and_ret:
959 snd_harmony_free(h);
960 return err;
961}
962
963static int
964snd_harmony_probe(struct parisc_device *padev)
965{
966 int err;
967 struct snd_card *card;
968 struct snd_harmony *h;
969
970 err = snd_card_new(&padev->dev, index, id, THIS_MODULE, 0, &card);
971 if (err < 0)
972 return err;
973
974 err = snd_harmony_create(card, padev, &h);
975 if (err < 0)
976 goto free_and_ret;
977
978 err = snd_harmony_pcm_init(h);
979 if (err < 0)
980 goto free_and_ret;
981
982 err = snd_harmony_mixer_init(h);
983 if (err < 0)
984 goto free_and_ret;
985
986 strcpy(card->driver, "harmony");
987 strcpy(card->shortname, "Harmony");
988 sprintf(card->longname, "%s at 0x%lx, irq %i",
989 card->shortname, h->hpa, h->irq);
990
991 err = snd_card_register(card);
992 if (err < 0)
993 goto free_and_ret;
994
995 parisc_set_drvdata(padev, card);
996 return 0;
997
998free_and_ret:
999 snd_card_free(card);
1000 return err;
1001}
1002
1003static int
1004snd_harmony_remove(struct parisc_device *padev)
1005{
1006 snd_card_free(parisc_get_drvdata(padev));
1007 return 0;
1008}
1009
1010static struct parisc_driver snd_harmony_driver = {
1011 .name = "harmony",
1012 .id_table = snd_harmony_devtable,
1013 .probe = snd_harmony_probe,
1014 .remove = snd_harmony_remove,
1015};
1016
1017static int __init
1018alsa_harmony_init(void)
1019{
1020 return register_parisc_driver(&snd_harmony_driver);
1021}
1022
1023static void __exit
1024alsa_harmony_fini(void)
1025{
1026 unregister_parisc_driver(&snd_harmony_driver);
1027}
1028
1029MODULE_LICENSE("GPL");
1030MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>");
1031MODULE_DESCRIPTION("Harmony sound driver");
1032
1033module_init(alsa_harmony_init);
1034module_exit(alsa_harmony_fini);
1// SPDX-License-Identifier: GPL-2.0-only
2/* Hewlett-Packard Harmony audio driver
3 *
4 * This is a driver for the Harmony audio chipset found
5 * on the LASI ASIC of various early HP PA-RISC workstations.
6 *
7 * Copyright (C) 2004, Kyle McMartin <kyle@{debian.org,parisc-linux.org}>
8 *
9 * Based on the previous Harmony incarnations by,
10 * Copyright 2000 (c) Linuxcare Canada, Alex deVries
11 * Copyright 2000-2003 (c) Helge Deller
12 * Copyright 2001 (c) Matthieu Delahaye
13 * Copyright 2001 (c) Jean-Christophe Vaugeois
14 * Copyright 2003 (c) Laurent Canet
15 * Copyright 2004 (c) Stuart Brady
16 *
17 * Notes:
18 * - graveyard and silence buffers last for lifetime of
19 * the driver. playback and capture buffers are allocated
20 * per _open()/_close().
21 *
22 * TODO:
23 */
24
25#include <linux/init.h>
26#include <linux/slab.h>
27#include <linux/time.h>
28#include <linux/wait.h>
29#include <linux/delay.h>
30#include <linux/module.h>
31#include <linux/interrupt.h>
32#include <linux/spinlock.h>
33#include <linux/dma-mapping.h>
34#include <linux/io.h>
35
36#include <sound/core.h>
37#include <sound/pcm.h>
38#include <sound/control.h>
39#include <sound/rawmidi.h>
40#include <sound/initval.h>
41#include <sound/info.h>
42
43#include <asm/hardware.h>
44#include <asm/parisc-device.h>
45
46#include "harmony.h"
47
48static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
49static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
50module_param(index, int, 0444);
51MODULE_PARM_DESC(index, "Index value for Harmony driver.");
52module_param(id, charp, 0444);
53MODULE_PARM_DESC(id, "ID string for Harmony driver.");
54
55
56static const struct parisc_device_id snd_harmony_devtable[] __initconst = {
57 /* bushmaster / flounder */
58 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A },
59 /* 712 / 715 */
60 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007B },
61 /* pace */
62 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007E },
63 /* outfield / coral II */
64 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007F },
65 { 0, }
66};
67
68MODULE_DEVICE_TABLE(parisc, snd_harmony_devtable);
69
70#define NAME "harmony"
71#define PFX NAME ": "
72
73static const unsigned int snd_harmony_rates[] = {
74 5512, 6615, 8000, 9600,
75 11025, 16000, 18900, 22050,
76 27428, 32000, 33075, 37800,
77 44100, 48000
78};
79
80static const unsigned int rate_bits[14] = {
81 HARMONY_SR_5KHZ, HARMONY_SR_6KHZ, HARMONY_SR_8KHZ,
82 HARMONY_SR_9KHZ, HARMONY_SR_11KHZ, HARMONY_SR_16KHZ,
83 HARMONY_SR_18KHZ, HARMONY_SR_22KHZ, HARMONY_SR_27KHZ,
84 HARMONY_SR_32KHZ, HARMONY_SR_33KHZ, HARMONY_SR_37KHZ,
85 HARMONY_SR_44KHZ, HARMONY_SR_48KHZ
86};
87
88static const struct snd_pcm_hw_constraint_list hw_constraint_rates = {
89 .count = ARRAY_SIZE(snd_harmony_rates),
90 .list = snd_harmony_rates,
91 .mask = 0,
92};
93
94static inline unsigned long
95harmony_read(struct snd_harmony *h, unsigned r)
96{
97 return __raw_readl(h->iobase + r);
98}
99
100static inline void
101harmony_write(struct snd_harmony *h, unsigned r, unsigned long v)
102{
103 __raw_writel(v, h->iobase + r);
104}
105
106static inline void
107harmony_wait_for_control(struct snd_harmony *h)
108{
109 while (harmony_read(h, HARMONY_CNTL) & HARMONY_CNTL_C) ;
110}
111
112static inline void
113harmony_reset(struct snd_harmony *h)
114{
115 harmony_write(h, HARMONY_RESET, 1);
116 mdelay(50);
117 harmony_write(h, HARMONY_RESET, 0);
118}
119
120static void
121harmony_disable_interrupts(struct snd_harmony *h)
122{
123 u32 dstatus;
124 harmony_wait_for_control(h);
125 dstatus = harmony_read(h, HARMONY_DSTATUS);
126 dstatus &= ~HARMONY_DSTATUS_IE;
127 harmony_write(h, HARMONY_DSTATUS, dstatus);
128}
129
130static void
131harmony_enable_interrupts(struct snd_harmony *h)
132{
133 u32 dstatus;
134 harmony_wait_for_control(h);
135 dstatus = harmony_read(h, HARMONY_DSTATUS);
136 dstatus |= HARMONY_DSTATUS_IE;
137 harmony_write(h, HARMONY_DSTATUS, dstatus);
138}
139
140static void
141harmony_mute(struct snd_harmony *h)
142{
143 unsigned long flags;
144
145 spin_lock_irqsave(&h->mixer_lock, flags);
146 harmony_wait_for_control(h);
147 harmony_write(h, HARMONY_GAINCTL, HARMONY_GAIN_SILENCE);
148 spin_unlock_irqrestore(&h->mixer_lock, flags);
149}
150
151static void
152harmony_unmute(struct snd_harmony *h)
153{
154 unsigned long flags;
155
156 spin_lock_irqsave(&h->mixer_lock, flags);
157 harmony_wait_for_control(h);
158 harmony_write(h, HARMONY_GAINCTL, h->st.gain);
159 spin_unlock_irqrestore(&h->mixer_lock, flags);
160}
161
162static void
163harmony_set_control(struct snd_harmony *h)
164{
165 u32 ctrl;
166 unsigned long flags;
167
168 spin_lock_irqsave(&h->lock, flags);
169
170 ctrl = (HARMONY_CNTL_C |
171 (h->st.format << 6) |
172 (h->st.stereo << 5) |
173 (h->st.rate));
174
175 harmony_wait_for_control(h);
176 harmony_write(h, HARMONY_CNTL, ctrl);
177
178 spin_unlock_irqrestore(&h->lock, flags);
179}
180
181static irqreturn_t
182snd_harmony_interrupt(int irq, void *dev)
183{
184 u32 dstatus;
185 struct snd_harmony *h = dev;
186
187 spin_lock(&h->lock);
188 harmony_disable_interrupts(h);
189 harmony_wait_for_control(h);
190 dstatus = harmony_read(h, HARMONY_DSTATUS);
191 spin_unlock(&h->lock);
192
193 if (dstatus & HARMONY_DSTATUS_PN) {
194 if (h->psubs && h->st.playing) {
195 spin_lock(&h->lock);
196 h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */
197 h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */
198
199 harmony_write(h, HARMONY_PNXTADD,
200 h->pbuf.addr + h->pbuf.buf);
201 h->stats.play_intr++;
202 spin_unlock(&h->lock);
203 snd_pcm_period_elapsed(h->psubs);
204 } else {
205 spin_lock(&h->lock);
206 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
207 h->stats.silence_intr++;
208 spin_unlock(&h->lock);
209 }
210 }
211
212 if (dstatus & HARMONY_DSTATUS_RN) {
213 if (h->csubs && h->st.capturing) {
214 spin_lock(&h->lock);
215 h->cbuf.buf += h->cbuf.count;
216 h->cbuf.buf %= h->cbuf.size;
217
218 harmony_write(h, HARMONY_RNXTADD,
219 h->cbuf.addr + h->cbuf.buf);
220 h->stats.rec_intr++;
221 spin_unlock(&h->lock);
222 snd_pcm_period_elapsed(h->csubs);
223 } else {
224 spin_lock(&h->lock);
225 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
226 h->stats.graveyard_intr++;
227 spin_unlock(&h->lock);
228 }
229 }
230
231 spin_lock(&h->lock);
232 harmony_enable_interrupts(h);
233 spin_unlock(&h->lock);
234
235 return IRQ_HANDLED;
236}
237
238static unsigned int
239snd_harmony_rate_bits(int rate)
240{
241 unsigned int i;
242
243 for (i = 0; i < ARRAY_SIZE(snd_harmony_rates); i++)
244 if (snd_harmony_rates[i] == rate)
245 return rate_bits[i];
246
247 return HARMONY_SR_44KHZ;
248}
249
250static const struct snd_pcm_hardware snd_harmony_playback =
251{
252 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
253 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
254 SNDRV_PCM_INFO_BLOCK_TRANSFER),
255 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
256 SNDRV_PCM_FMTBIT_A_LAW),
257 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
258 SNDRV_PCM_RATE_KNOT),
259 .rate_min = 5512,
260 .rate_max = 48000,
261 .channels_min = 1,
262 .channels_max = 2,
263 .buffer_bytes_max = MAX_BUF_SIZE,
264 .period_bytes_min = BUF_SIZE,
265 .period_bytes_max = BUF_SIZE,
266 .periods_min = 1,
267 .periods_max = MAX_BUFS,
268 .fifo_size = 0,
269};
270
271static const struct snd_pcm_hardware snd_harmony_capture =
272{
273 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
274 SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID |
275 SNDRV_PCM_INFO_BLOCK_TRANSFER),
276 .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW |
277 SNDRV_PCM_FMTBIT_A_LAW),
278 .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 |
279 SNDRV_PCM_RATE_KNOT),
280 .rate_min = 5512,
281 .rate_max = 48000,
282 .channels_min = 1,
283 .channels_max = 2,
284 .buffer_bytes_max = MAX_BUF_SIZE,
285 .period_bytes_min = BUF_SIZE,
286 .period_bytes_max = BUF_SIZE,
287 .periods_min = 1,
288 .periods_max = MAX_BUFS,
289 .fifo_size = 0,
290};
291
292static int
293snd_harmony_playback_trigger(struct snd_pcm_substream *ss, int cmd)
294{
295 struct snd_harmony *h = snd_pcm_substream_chip(ss);
296
297 if (h->st.capturing)
298 return -EBUSY;
299
300 spin_lock(&h->lock);
301 switch (cmd) {
302 case SNDRV_PCM_TRIGGER_START:
303 h->st.playing = 1;
304 harmony_write(h, HARMONY_PNXTADD, h->pbuf.addr);
305 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
306 harmony_unmute(h);
307 harmony_enable_interrupts(h);
308 break;
309 case SNDRV_PCM_TRIGGER_STOP:
310 h->st.playing = 0;
311 harmony_mute(h);
312 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
313 harmony_disable_interrupts(h);
314 break;
315 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
316 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
317 case SNDRV_PCM_TRIGGER_SUSPEND:
318 default:
319 spin_unlock(&h->lock);
320 snd_BUG();
321 return -EINVAL;
322 }
323 spin_unlock(&h->lock);
324
325 return 0;
326}
327
328static int
329snd_harmony_capture_trigger(struct snd_pcm_substream *ss, int cmd)
330{
331 struct snd_harmony *h = snd_pcm_substream_chip(ss);
332
333 if (h->st.playing)
334 return -EBUSY;
335
336 spin_lock(&h->lock);
337 switch (cmd) {
338 case SNDRV_PCM_TRIGGER_START:
339 h->st.capturing = 1;
340 harmony_write(h, HARMONY_PNXTADD, h->sdma.addr);
341 harmony_write(h, HARMONY_RNXTADD, h->cbuf.addr);
342 harmony_unmute(h);
343 harmony_enable_interrupts(h);
344 break;
345 case SNDRV_PCM_TRIGGER_STOP:
346 h->st.capturing = 0;
347 harmony_mute(h);
348 harmony_write(h, HARMONY_RNXTADD, h->gdma.addr);
349 harmony_disable_interrupts(h);
350 break;
351 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
352 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
353 case SNDRV_PCM_TRIGGER_SUSPEND:
354 default:
355 spin_unlock(&h->lock);
356 snd_BUG();
357 return -EINVAL;
358 }
359 spin_unlock(&h->lock);
360
361 return 0;
362}
363
364static int
365snd_harmony_set_data_format(struct snd_harmony *h, int fmt, int force)
366{
367 int o = h->st.format;
368 int n;
369
370 switch(fmt) {
371 case SNDRV_PCM_FORMAT_S16_BE:
372 n = HARMONY_DF_16BIT_LINEAR;
373 break;
374 case SNDRV_PCM_FORMAT_A_LAW:
375 n = HARMONY_DF_8BIT_ALAW;
376 break;
377 case SNDRV_PCM_FORMAT_MU_LAW:
378 n = HARMONY_DF_8BIT_ULAW;
379 break;
380 default:
381 n = HARMONY_DF_16BIT_LINEAR;
382 break;
383 }
384
385 if (force || o != n) {
386 snd_pcm_format_set_silence(fmt, h->sdma.area, SILENCE_BUFSZ /
387 (snd_pcm_format_physical_width(fmt)
388 / 8));
389 }
390
391 return n;
392}
393
394static int
395snd_harmony_playback_prepare(struct snd_pcm_substream *ss)
396{
397 struct snd_harmony *h = snd_pcm_substream_chip(ss);
398 struct snd_pcm_runtime *rt = ss->runtime;
399
400 if (h->st.capturing)
401 return -EBUSY;
402
403 h->pbuf.size = snd_pcm_lib_buffer_bytes(ss);
404 h->pbuf.count = snd_pcm_lib_period_bytes(ss);
405 if (h->pbuf.buf >= h->pbuf.size)
406 h->pbuf.buf = 0;
407 h->st.playing = 0;
408
409 h->st.rate = snd_harmony_rate_bits(rt->rate);
410 h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
411
412 if (rt->channels == 2)
413 h->st.stereo = HARMONY_SS_STEREO;
414 else
415 h->st.stereo = HARMONY_SS_MONO;
416
417 harmony_set_control(h);
418
419 h->pbuf.addr = rt->dma_addr;
420
421 return 0;
422}
423
424static int
425snd_harmony_capture_prepare(struct snd_pcm_substream *ss)
426{
427 struct snd_harmony *h = snd_pcm_substream_chip(ss);
428 struct snd_pcm_runtime *rt = ss->runtime;
429
430 if (h->st.playing)
431 return -EBUSY;
432
433 h->cbuf.size = snd_pcm_lib_buffer_bytes(ss);
434 h->cbuf.count = snd_pcm_lib_period_bytes(ss);
435 if (h->cbuf.buf >= h->cbuf.size)
436 h->cbuf.buf = 0;
437 h->st.capturing = 0;
438
439 h->st.rate = snd_harmony_rate_bits(rt->rate);
440 h->st.format = snd_harmony_set_data_format(h, rt->format, 0);
441
442 if (rt->channels == 2)
443 h->st.stereo = HARMONY_SS_STEREO;
444 else
445 h->st.stereo = HARMONY_SS_MONO;
446
447 harmony_set_control(h);
448
449 h->cbuf.addr = rt->dma_addr;
450
451 return 0;
452}
453
454static snd_pcm_uframes_t
455snd_harmony_playback_pointer(struct snd_pcm_substream *ss)
456{
457 struct snd_pcm_runtime *rt = ss->runtime;
458 struct snd_harmony *h = snd_pcm_substream_chip(ss);
459 unsigned long pcuradd;
460 unsigned long played;
461
462 if (!(h->st.playing) || (h->psubs == NULL))
463 return 0;
464
465 if ((h->pbuf.addr == 0) || (h->pbuf.size == 0))
466 return 0;
467
468 pcuradd = harmony_read(h, HARMONY_PCURADD);
469 played = pcuradd - h->pbuf.addr;
470
471#ifdef HARMONY_DEBUG
472 printk(KERN_DEBUG PFX "playback_pointer is 0x%lx-0x%lx = %d bytes\n",
473 pcuradd, h->pbuf.addr, played);
474#endif
475
476 if (pcuradd > h->pbuf.addr + h->pbuf.size) {
477 return 0;
478 }
479
480 return bytes_to_frames(rt, played);
481}
482
483static snd_pcm_uframes_t
484snd_harmony_capture_pointer(struct snd_pcm_substream *ss)
485{
486 struct snd_pcm_runtime *rt = ss->runtime;
487 struct snd_harmony *h = snd_pcm_substream_chip(ss);
488 unsigned long rcuradd;
489 unsigned long caught;
490
491 if (!(h->st.capturing) || (h->csubs == NULL))
492 return 0;
493
494 if ((h->cbuf.addr == 0) || (h->cbuf.size == 0))
495 return 0;
496
497 rcuradd = harmony_read(h, HARMONY_RCURADD);
498 caught = rcuradd - h->cbuf.addr;
499
500#ifdef HARMONY_DEBUG
501 printk(KERN_DEBUG PFX "capture_pointer is 0x%lx-0x%lx = %d bytes\n",
502 rcuradd, h->cbuf.addr, caught);
503#endif
504
505 if (rcuradd > h->cbuf.addr + h->cbuf.size) {
506 return 0;
507 }
508
509 return bytes_to_frames(rt, caught);
510}
511
512static int
513snd_harmony_playback_open(struct snd_pcm_substream *ss)
514{
515 struct snd_harmony *h = snd_pcm_substream_chip(ss);
516 struct snd_pcm_runtime *rt = ss->runtime;
517 int err;
518
519 h->psubs = ss;
520 rt->hw = snd_harmony_playback;
521 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE,
522 &hw_constraint_rates);
523
524 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
525 if (err < 0)
526 return err;
527
528 return 0;
529}
530
531static int
532snd_harmony_capture_open(struct snd_pcm_substream *ss)
533{
534 struct snd_harmony *h = snd_pcm_substream_chip(ss);
535 struct snd_pcm_runtime *rt = ss->runtime;
536 int err;
537
538 h->csubs = ss;
539 rt->hw = snd_harmony_capture;
540 snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE,
541 &hw_constraint_rates);
542
543 err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
544 if (err < 0)
545 return err;
546
547 return 0;
548}
549
550static int
551snd_harmony_playback_close(struct snd_pcm_substream *ss)
552{
553 struct snd_harmony *h = snd_pcm_substream_chip(ss);
554 h->psubs = NULL;
555 return 0;
556}
557
558static int
559snd_harmony_capture_close(struct snd_pcm_substream *ss)
560{
561 struct snd_harmony *h = snd_pcm_substream_chip(ss);
562 h->csubs = NULL;
563 return 0;
564}
565
566static const struct snd_pcm_ops snd_harmony_playback_ops = {
567 .open = snd_harmony_playback_open,
568 .close = snd_harmony_playback_close,
569 .prepare = snd_harmony_playback_prepare,
570 .trigger = snd_harmony_playback_trigger,
571 .pointer = snd_harmony_playback_pointer,
572};
573
574static const struct snd_pcm_ops snd_harmony_capture_ops = {
575 .open = snd_harmony_capture_open,
576 .close = snd_harmony_capture_close,
577 .prepare = snd_harmony_capture_prepare,
578 .trigger = snd_harmony_capture_trigger,
579 .pointer = snd_harmony_capture_pointer,
580};
581
582static int
583snd_harmony_pcm_init(struct snd_harmony *h)
584{
585 struct snd_pcm *pcm;
586 int err;
587
588 if (snd_BUG_ON(!h))
589 return -EINVAL;
590
591 harmony_disable_interrupts(h);
592
593 err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm);
594 if (err < 0)
595 return err;
596
597 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
598 &snd_harmony_playback_ops);
599 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
600 &snd_harmony_capture_ops);
601
602 pcm->private_data = h;
603 pcm->info_flags = 0;
604 strcpy(pcm->name, "harmony");
605 h->pcm = pcm;
606
607 h->psubs = NULL;
608 h->csubs = NULL;
609
610 /* initialize graveyard buffer */
611 h->dma.type = SNDRV_DMA_TYPE_DEV;
612 h->dma.dev = &h->dev->dev;
613 err = snd_dma_alloc_pages(h->dma.type,
614 h->dma.dev,
615 BUF_SIZE*GRAVEYARD_BUFS,
616 &h->gdma);
617 if (err < 0) {
618 printk(KERN_ERR PFX "cannot allocate graveyard buffer!\n");
619 return err;
620 }
621
622 /* initialize silence buffers */
623 err = snd_dma_alloc_pages(h->dma.type,
624 h->dma.dev,
625 BUF_SIZE*SILENCE_BUFS,
626 &h->sdma);
627 if (err < 0) {
628 printk(KERN_ERR PFX "cannot allocate silence buffer!\n");
629 return err;
630 }
631
632 /* pre-allocate space for DMA */
633 snd_pcm_set_managed_buffer_all(pcm, h->dma.type, h->dma.dev,
634 MAX_BUF_SIZE, MAX_BUF_SIZE);
635
636 h->st.format = snd_harmony_set_data_format(h,
637 SNDRV_PCM_FORMAT_S16_BE, 1);
638
639 return 0;
640}
641
642static void
643snd_harmony_set_new_gain(struct snd_harmony *h)
644{
645 harmony_wait_for_control(h);
646 harmony_write(h, HARMONY_GAINCTL, h->st.gain);
647}
648
649static int
650snd_harmony_mixercontrol_info(struct snd_kcontrol *kc,
651 struct snd_ctl_elem_info *uinfo)
652{
653 int mask = (kc->private_value >> 16) & 0xff;
654 int left_shift = (kc->private_value) & 0xff;
655 int right_shift = (kc->private_value >> 8) & 0xff;
656
657 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN :
658 SNDRV_CTL_ELEM_TYPE_INTEGER;
659 uinfo->count = left_shift == right_shift ? 1 : 2;
660 uinfo->value.integer.min = 0;
661 uinfo->value.integer.max = mask;
662
663 return 0;
664}
665
666static int
667snd_harmony_volume_get(struct snd_kcontrol *kc,
668 struct snd_ctl_elem_value *ucontrol)
669{
670 struct snd_harmony *h = snd_kcontrol_chip(kc);
671 int shift_left = (kc->private_value) & 0xff;
672 int shift_right = (kc->private_value >> 8) & 0xff;
673 int mask = (kc->private_value >> 16) & 0xff;
674 int invert = (kc->private_value >> 24) & 0xff;
675 int left, right;
676
677 spin_lock_irq(&h->mixer_lock);
678
679 left = (h->st.gain >> shift_left) & mask;
680 right = (h->st.gain >> shift_right) & mask;
681 if (invert) {
682 left = mask - left;
683 right = mask - right;
684 }
685
686 ucontrol->value.integer.value[0] = left;
687 if (shift_left != shift_right)
688 ucontrol->value.integer.value[1] = right;
689
690 spin_unlock_irq(&h->mixer_lock);
691
692 return 0;
693}
694
695static int
696snd_harmony_volume_put(struct snd_kcontrol *kc,
697 struct snd_ctl_elem_value *ucontrol)
698{
699 struct snd_harmony *h = snd_kcontrol_chip(kc);
700 int shift_left = (kc->private_value) & 0xff;
701 int shift_right = (kc->private_value >> 8) & 0xff;
702 int mask = (kc->private_value >> 16) & 0xff;
703 int invert = (kc->private_value >> 24) & 0xff;
704 int left, right;
705 int old_gain = h->st.gain;
706
707 spin_lock_irq(&h->mixer_lock);
708
709 left = ucontrol->value.integer.value[0] & mask;
710 if (invert)
711 left = mask - left;
712 h->st.gain &= ~( (mask << shift_left ) );
713 h->st.gain |= (left << shift_left);
714
715 if (shift_left != shift_right) {
716 right = ucontrol->value.integer.value[1] & mask;
717 if (invert)
718 right = mask - right;
719 h->st.gain &= ~( (mask << shift_right) );
720 h->st.gain |= (right << shift_right);
721 }
722
723 snd_harmony_set_new_gain(h);
724
725 spin_unlock_irq(&h->mixer_lock);
726
727 return h->st.gain != old_gain;
728}
729
730static int
731snd_harmony_captureroute_info(struct snd_kcontrol *kc,
732 struct snd_ctl_elem_info *uinfo)
733{
734 static const char * const texts[2] = { "Line", "Mic" };
735
736 return snd_ctl_enum_info(uinfo, 1, 2, texts);
737}
738
739static int
740snd_harmony_captureroute_get(struct snd_kcontrol *kc,
741 struct snd_ctl_elem_value *ucontrol)
742{
743 struct snd_harmony *h = snd_kcontrol_chip(kc);
744 int value;
745
746 spin_lock_irq(&h->mixer_lock);
747
748 value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1;
749 ucontrol->value.enumerated.item[0] = value;
750
751 spin_unlock_irq(&h->mixer_lock);
752
753 return 0;
754}
755
756static int
757snd_harmony_captureroute_put(struct snd_kcontrol *kc,
758 struct snd_ctl_elem_value *ucontrol)
759{
760 struct snd_harmony *h = snd_kcontrol_chip(kc);
761 int value;
762 int old_gain = h->st.gain;
763
764 spin_lock_irq(&h->mixer_lock);
765
766 value = ucontrol->value.enumerated.item[0] & 1;
767 h->st.gain &= ~HARMONY_GAIN_IS_MASK;
768 h->st.gain |= value << HARMONY_GAIN_IS_SHIFT;
769
770 snd_harmony_set_new_gain(h);
771
772 spin_unlock_irq(&h->mixer_lock);
773
774 return h->st.gain != old_gain;
775}
776
777#define HARMONY_CONTROLS ARRAY_SIZE(snd_harmony_controls)
778
779#define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \
780{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
781 .info = snd_harmony_mixercontrol_info, \
782 .get = snd_harmony_volume_get, .put = snd_harmony_volume_put, \
783 .private_value = ((left_shift) | ((right_shift) << 8) | \
784 ((mask) << 16) | ((invert) << 24)) }
785
786static const struct snd_kcontrol_new snd_harmony_controls[] = {
787 HARMONY_VOLUME("Master Playback Volume", HARMONY_GAIN_LO_SHIFT,
788 HARMONY_GAIN_RO_SHIFT, HARMONY_GAIN_OUT, 1),
789 HARMONY_VOLUME("Capture Volume", HARMONY_GAIN_LI_SHIFT,
790 HARMONY_GAIN_RI_SHIFT, HARMONY_GAIN_IN, 0),
791 HARMONY_VOLUME("Monitor Volume", HARMONY_GAIN_MA_SHIFT,
792 HARMONY_GAIN_MA_SHIFT, HARMONY_GAIN_MA, 1),
793 {
794 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
795 .name = "Input Route",
796 .info = snd_harmony_captureroute_info,
797 .get = snd_harmony_captureroute_get,
798 .put = snd_harmony_captureroute_put
799 },
800 HARMONY_VOLUME("Internal Speaker Switch", HARMONY_GAIN_SE_SHIFT,
801 HARMONY_GAIN_SE_SHIFT, 1, 0),
802 HARMONY_VOLUME("Line-Out Switch", HARMONY_GAIN_LE_SHIFT,
803 HARMONY_GAIN_LE_SHIFT, 1, 0),
804 HARMONY_VOLUME("Headphones Switch", HARMONY_GAIN_HE_SHIFT,
805 HARMONY_GAIN_HE_SHIFT, 1, 0),
806};
807
808static void
809snd_harmony_mixer_reset(struct snd_harmony *h)
810{
811 harmony_mute(h);
812 harmony_reset(h);
813 h->st.gain = HARMONY_GAIN_DEFAULT;
814 harmony_unmute(h);
815}
816
817static int
818snd_harmony_mixer_init(struct snd_harmony *h)
819{
820 struct snd_card *card;
821 int idx, err;
822
823 if (snd_BUG_ON(!h))
824 return -EINVAL;
825 card = h->card;
826 strcpy(card->mixername, "Harmony Gain control interface");
827
828 for (idx = 0; idx < HARMONY_CONTROLS; idx++) {
829 err = snd_ctl_add(card,
830 snd_ctl_new1(&snd_harmony_controls[idx], h));
831 if (err < 0)
832 return err;
833 }
834
835 snd_harmony_mixer_reset(h);
836
837 return 0;
838}
839
840static int
841snd_harmony_free(struct snd_harmony *h)
842{
843 if (h->gdma.addr)
844 snd_dma_free_pages(&h->gdma);
845 if (h->sdma.addr)
846 snd_dma_free_pages(&h->sdma);
847
848 if (h->irq >= 0)
849 free_irq(h->irq, h);
850
851 iounmap(h->iobase);
852 kfree(h);
853 return 0;
854}
855
856static int
857snd_harmony_dev_free(struct snd_device *dev)
858{
859 struct snd_harmony *h = dev->device_data;
860 return snd_harmony_free(h);
861}
862
863static int
864snd_harmony_create(struct snd_card *card,
865 struct parisc_device *padev,
866 struct snd_harmony **rchip)
867{
868 int err;
869 struct snd_harmony *h;
870 static const struct snd_device_ops ops = {
871 .dev_free = snd_harmony_dev_free,
872 };
873
874 *rchip = NULL;
875
876 h = kzalloc(sizeof(*h), GFP_KERNEL);
877 if (h == NULL)
878 return -ENOMEM;
879
880 h->hpa = padev->hpa.start;
881 h->card = card;
882 h->dev = padev;
883 h->irq = -1;
884 h->iobase = ioremap(padev->hpa.start, HARMONY_SIZE);
885 if (h->iobase == NULL) {
886 printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n",
887 (unsigned long)padev->hpa.start);
888 err = -EBUSY;
889 goto free_and_ret;
890 }
891
892 err = request_irq(padev->irq, snd_harmony_interrupt, 0,
893 "harmony", h);
894 if (err) {
895 printk(KERN_ERR PFX "could not obtain interrupt %d",
896 padev->irq);
897 goto free_and_ret;
898 }
899 h->irq = padev->irq;
900
901 spin_lock_init(&h->mixer_lock);
902 spin_lock_init(&h->lock);
903
904 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, h, &ops);
905 if (err < 0)
906 goto free_and_ret;
907
908 *rchip = h;
909
910 return 0;
911
912free_and_ret:
913 snd_harmony_free(h);
914 return err;
915}
916
917static int __init
918snd_harmony_probe(struct parisc_device *padev)
919{
920 int err;
921 struct snd_card *card;
922 struct snd_harmony *h;
923
924 err = snd_card_new(&padev->dev, index, id, THIS_MODULE, 0, &card);
925 if (err < 0)
926 return err;
927
928 err = snd_harmony_create(card, padev, &h);
929 if (err < 0)
930 goto free_and_ret;
931
932 err = snd_harmony_pcm_init(h);
933 if (err < 0)
934 goto free_and_ret;
935
936 err = snd_harmony_mixer_init(h);
937 if (err < 0)
938 goto free_and_ret;
939
940 strcpy(card->driver, "harmony");
941 strcpy(card->shortname, "Harmony");
942 sprintf(card->longname, "%s at 0x%lx, irq %i",
943 card->shortname, h->hpa, h->irq);
944
945 err = snd_card_register(card);
946 if (err < 0)
947 goto free_and_ret;
948
949 parisc_set_drvdata(padev, card);
950 return 0;
951
952free_and_ret:
953 snd_card_free(card);
954 return err;
955}
956
957static void __exit
958snd_harmony_remove(struct parisc_device *padev)
959{
960 snd_card_free(parisc_get_drvdata(padev));
961}
962
963static struct parisc_driver snd_harmony_driver __refdata = {
964 .name = "harmony",
965 .id_table = snd_harmony_devtable,
966 .probe = snd_harmony_probe,
967 .remove = __exit_p(snd_harmony_remove),
968};
969
970static int __init
971alsa_harmony_init(void)
972{
973 return register_parisc_driver(&snd_harmony_driver);
974}
975
976static void __exit
977alsa_harmony_fini(void)
978{
979 unregister_parisc_driver(&snd_harmony_driver);
980}
981
982MODULE_LICENSE("GPL");
983MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>");
984MODULE_DESCRIPTION("Harmony sound driver");
985
986module_init(alsa_harmony_init);
987module_exit(alsa_harmony_fini);