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1da177e4 LT |
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) { | |
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) { | |
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_disable_interrupts(h); | |
320 | break; | |
321 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
322 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
323 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
324 | default: | |
325 | spin_unlock_irqrestore(&h->lock, flags); | |
326 | snd_BUG(); | |
327 | return -EINVAL; | |
328 | } | |
329 | spin_unlock_irqrestore(&h->lock, flags); | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | static int | |
335 | snd_harmony_capture_trigger(snd_pcm_substream_t *ss, int cmd) | |
336 | { | |
337 | harmony_t *h = snd_pcm_substream_chip(ss); | |
338 | unsigned long flags; | |
339 | ||
340 | if (h->st.playing) | |
341 | return -EBUSY; | |
342 | ||
343 | spin_lock_irqsave(&h->lock, flags); | |
344 | switch (cmd) { | |
345 | case SNDRV_PCM_TRIGGER_START: | |
346 | h->st.capturing = 1; | |
347 | harmony_write(h, HARMONY_PNXTADD, h->sdma.addr); | |
348 | harmony_write(h, HARMONY_RNXTADD, h->cbuf.addr); | |
349 | harmony_unmute(h); | |
350 | harmony_enable_interrupts(h); | |
351 | break; | |
352 | case SNDRV_PCM_TRIGGER_STOP: | |
353 | h->st.capturing = 0; | |
354 | harmony_mute(h); | |
355 | harmony_disable_interrupts(h); | |
356 | break; | |
357 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
358 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
359 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
360 | default: | |
361 | spin_unlock_irqrestore(&h->lock, flags); | |
362 | snd_BUG(); | |
363 | return -EINVAL; | |
364 | } | |
365 | spin_unlock_irqrestore(&h->lock, flags); | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | static int | |
371 | snd_harmony_set_data_format(harmony_t *h, int fmt, int force) | |
372 | { | |
373 | int o = h->st.format; | |
374 | int n; | |
375 | ||
376 | switch(fmt) { | |
377 | case SNDRV_PCM_FORMAT_S16_BE: | |
378 | n = HARMONY_DF_16BIT_LINEAR; | |
379 | break; | |
380 | case SNDRV_PCM_FORMAT_A_LAW: | |
381 | n = HARMONY_DF_8BIT_ALAW; | |
382 | break; | |
383 | case SNDRV_PCM_FORMAT_MU_LAW: | |
384 | n = HARMONY_DF_8BIT_ULAW; | |
385 | break; | |
386 | default: | |
387 | n = HARMONY_DF_16BIT_LINEAR; | |
388 | break; | |
389 | } | |
390 | ||
391 | if (force || o != n) { | |
392 | snd_pcm_format_set_silence(fmt, h->sdma.area, SILENCE_BUFSZ / | |
393 | (snd_pcm_format_physical_width(fmt) | |
394 | / 8)); | |
395 | } | |
396 | ||
397 | return n; | |
398 | } | |
399 | ||
400 | static int | |
401 | snd_harmony_playback_prepare(snd_pcm_substream_t *ss) | |
402 | { | |
403 | harmony_t *h = snd_pcm_substream_chip(ss); | |
404 | snd_pcm_runtime_t *rt = ss->runtime; | |
405 | ||
406 | if (h->st.capturing) | |
407 | return -EBUSY; | |
408 | ||
409 | h->pbuf.size = snd_pcm_lib_buffer_bytes(ss); | |
410 | h->pbuf.count = snd_pcm_lib_period_bytes(ss); | |
411 | h->pbuf.buf = 0; | |
412 | h->st.playing = 0; | |
413 | ||
414 | h->st.rate = snd_harmony_rate_bits(rt->rate); | |
415 | h->st.format = snd_harmony_set_data_format(h, rt->format, 0); | |
416 | ||
417 | if (rt->channels == 2) | |
418 | h->st.stereo = HARMONY_SS_STEREO; | |
419 | else | |
420 | h->st.stereo = HARMONY_SS_MONO; | |
421 | ||
422 | harmony_set_control(h); | |
423 | ||
424 | h->pbuf.addr = rt->dma_addr; | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
429 | static int | |
430 | snd_harmony_capture_prepare(snd_pcm_substream_t *ss) | |
431 | { | |
432 | harmony_t *h = snd_pcm_substream_chip(ss); | |
433 | snd_pcm_runtime_t *rt = ss->runtime; | |
434 | ||
435 | if (h->st.playing) | |
436 | return -EBUSY; | |
437 | ||
438 | h->cbuf.size = snd_pcm_lib_buffer_bytes(ss); | |
439 | h->cbuf.count = snd_pcm_lib_period_bytes(ss); | |
440 | h->cbuf.buf = 0; | |
441 | h->st.capturing = 0; | |
442 | ||
443 | h->st.rate = snd_harmony_rate_bits(rt->rate); | |
444 | h->st.format = snd_harmony_set_data_format(h, rt->format, 0); | |
445 | ||
446 | if (rt->channels == 2) | |
447 | h->st.stereo = HARMONY_SS_STEREO; | |
448 | else | |
449 | h->st.stereo = HARMONY_SS_MONO; | |
450 | ||
451 | harmony_set_control(h); | |
452 | ||
453 | h->cbuf.addr = rt->dma_addr; | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | static snd_pcm_uframes_t | |
459 | snd_harmony_playback_pointer(snd_pcm_substream_t *ss) | |
460 | { | |
461 | snd_pcm_runtime_t *rt = ss->runtime; | |
462 | harmony_t *h = snd_pcm_substream_chip(ss); | |
463 | unsigned long pcuradd; | |
464 | unsigned long played; | |
465 | ||
466 | if (!(h->st.playing) || (h->psubs == NULL)) | |
467 | return 0; | |
468 | ||
469 | if ((h->pbuf.addr == 0) || (h->pbuf.size == 0)) | |
470 | return 0; | |
471 | ||
472 | pcuradd = harmony_read(h, HARMONY_PCURADD); | |
473 | played = pcuradd - h->pbuf.addr; | |
474 | ||
475 | #ifdef HARMONY_DEBUG | |
476 | printk(KERN_DEBUG PFX "playback_pointer is 0x%lx-0x%lx = %d bytes\n", | |
477 | pcuradd, h->pbuf.addr, played); | |
478 | #endif | |
479 | ||
480 | if (pcuradd > h->pbuf.addr + h->pbuf.size) { | |
481 | return 0; | |
482 | } | |
483 | ||
484 | return bytes_to_frames(rt, played); | |
485 | } | |
486 | ||
487 | static snd_pcm_uframes_t | |
488 | snd_harmony_capture_pointer(snd_pcm_substream_t *ss) | |
489 | { | |
490 | snd_pcm_runtime_t *rt = ss->runtime; | |
491 | harmony_t *h = snd_pcm_substream_chip(ss); | |
492 | unsigned long rcuradd; | |
493 | unsigned long caught; | |
494 | ||
495 | if (!(h->st.capturing) || (h->csubs == NULL)) | |
496 | return 0; | |
497 | ||
498 | if ((h->cbuf.addr == 0) || (h->cbuf.size == 0)) | |
499 | return 0; | |
500 | ||
501 | rcuradd = harmony_read(h, HARMONY_RCURADD); | |
502 | caught = rcuradd - h->cbuf.addr; | |
503 | ||
504 | #ifdef HARMONY_DEBUG | |
505 | printk(KERN_DEBUG PFX "capture_pointer is 0x%lx-0x%lx = %d bytes\n", | |
506 | rcuradd, h->cbuf.addr, caught); | |
507 | #endif | |
508 | ||
509 | if (rcuradd > h->cbuf.addr + h->cbuf.size) { | |
510 | return 0; | |
511 | } | |
512 | ||
513 | return bytes_to_frames(rt, caught); | |
514 | } | |
515 | ||
516 | static int | |
517 | snd_harmony_playback_open(snd_pcm_substream_t *ss) | |
518 | { | |
519 | harmony_t *h = snd_pcm_substream_chip(ss); | |
520 | snd_pcm_runtime_t *rt = ss->runtime; | |
521 | int err; | |
522 | ||
523 | h->psubs = ss; | |
524 | rt->hw = snd_harmony_playback; | |
525 | snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, | |
526 | &hw_constraint_rates); | |
527 | ||
528 | err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); | |
529 | if (err < 0) | |
530 | return err; | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | static int | |
536 | snd_harmony_capture_open(snd_pcm_substream_t *ss) | |
537 | { | |
538 | harmony_t *h = snd_pcm_substream_chip(ss); | |
539 | snd_pcm_runtime_t *rt = ss->runtime; | |
540 | int err; | |
541 | ||
542 | h->csubs = ss; | |
543 | rt->hw = snd_harmony_capture; | |
544 | snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, | |
545 | &hw_constraint_rates); | |
546 | ||
547 | err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); | |
548 | if (err < 0) | |
549 | return err; | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
554 | static int | |
555 | snd_harmony_playback_close(snd_pcm_substream_t *ss) | |
556 | { | |
557 | harmony_t *h = snd_pcm_substream_chip(ss); | |
558 | h->psubs = NULL; | |
559 | return 0; | |
560 | } | |
561 | ||
562 | static int | |
563 | snd_harmony_capture_close(snd_pcm_substream_t *ss) | |
564 | { | |
565 | harmony_t *h = snd_pcm_substream_chip(ss); | |
566 | h->csubs = NULL; | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static int | |
571 | snd_harmony_hw_params(snd_pcm_substream_t *ss, | |
572 | snd_pcm_hw_params_t *hw) | |
573 | { | |
574 | int err; | |
575 | harmony_t *h = snd_pcm_substream_chip(ss); | |
576 | ||
577 | err = snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw)); | |
578 | if (err > 0 && h->dma.type == SNDRV_DMA_TYPE_CONTINUOUS) | |
579 | ss->runtime->dma_addr = __pa(ss->runtime->dma_area); | |
580 | ||
581 | return err; | |
582 | } | |
583 | ||
584 | static int | |
585 | snd_harmony_hw_free(snd_pcm_substream_t *ss) | |
586 | { | |
587 | return snd_pcm_lib_free_pages(ss); | |
588 | } | |
589 | ||
590 | static snd_pcm_ops_t snd_harmony_playback_ops = { | |
591 | .open = snd_harmony_playback_open, | |
592 | .close = snd_harmony_playback_close, | |
593 | .ioctl = snd_pcm_lib_ioctl, | |
594 | .hw_params = snd_harmony_hw_params, | |
595 | .hw_free = snd_harmony_hw_free, | |
596 | .prepare = snd_harmony_playback_prepare, | |
597 | .trigger = snd_harmony_playback_trigger, | |
598 | .pointer = snd_harmony_playback_pointer, | |
599 | }; | |
600 | ||
601 | static snd_pcm_ops_t snd_harmony_capture_ops = { | |
602 | .open = snd_harmony_capture_open, | |
603 | .close = snd_harmony_capture_close, | |
604 | .ioctl = snd_pcm_lib_ioctl, | |
605 | .hw_params = snd_harmony_hw_params, | |
606 | .hw_free = snd_harmony_hw_free, | |
607 | .prepare = snd_harmony_capture_prepare, | |
608 | .trigger = snd_harmony_capture_trigger, | |
609 | .pointer = snd_harmony_capture_pointer, | |
610 | }; | |
611 | ||
612 | static int | |
613 | snd_harmony_pcm_init(harmony_t *h) | |
614 | { | |
615 | snd_pcm_t *pcm; | |
616 | int err; | |
617 | ||
618 | harmony_disable_interrupts(h); | |
619 | ||
620 | err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm); | |
621 | if (err < 0) | |
622 | return err; | |
623 | ||
624 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
625 | &snd_harmony_playback_ops); | |
626 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, | |
627 | &snd_harmony_capture_ops); | |
628 | ||
629 | pcm->private_data = h; | |
630 | pcm->info_flags = 0; | |
631 | strcpy(pcm->name, "harmony"); | |
632 | h->pcm = pcm; | |
633 | ||
634 | h->psubs = NULL; | |
635 | h->csubs = NULL; | |
636 | ||
637 | /* initialize graveyard buffer */ | |
638 | h->dma.type = SNDRV_DMA_TYPE_DEV; | |
639 | h->dma.dev = &h->dev->dev; | |
640 | err = snd_dma_alloc_pages(h->dma.type, | |
641 | h->dma.dev, | |
642 | BUF_SIZE*GRAVEYARD_BUFS, | |
643 | &h->gdma); | |
644 | if (err < 0) { | |
645 | printk(KERN_ERR PFX "cannot allocate graveyard buffer!\n"); | |
646 | return err; | |
647 | } | |
648 | ||
649 | /* initialize silence buffers */ | |
650 | err = snd_dma_alloc_pages(h->dma.type, | |
651 | h->dma.dev, | |
652 | BUF_SIZE*SILENCE_BUFS, | |
653 | &h->sdma); | |
654 | if (err < 0) { | |
655 | printk(KERN_ERR PFX "cannot allocate silence buffer!\n"); | |
656 | return err; | |
657 | } | |
658 | ||
659 | /* pre-allocate space for DMA */ | |
660 | err = snd_pcm_lib_preallocate_pages_for_all(pcm, h->dma.type, | |
661 | h->dma.dev, | |
662 | MAX_BUF_SIZE, | |
663 | MAX_BUF_SIZE); | |
664 | if (err < 0) { | |
665 | printk(KERN_ERR PFX "buffer allocation error: %d\n", err); | |
666 | return err; | |
667 | } | |
668 | ||
669 | h->st.format = snd_harmony_set_data_format(h, | |
670 | SNDRV_PCM_FORMAT_S16_BE, 1); | |
671 | ||
672 | return 0; | |
673 | } | |
674 | ||
675 | static void | |
676 | snd_harmony_set_new_gain(harmony_t *h) | |
677 | { | |
678 | harmony_wait_for_control(h); | |
679 | harmony_write(h, HARMONY_GAINCTL, h->st.gain); | |
680 | } | |
681 | ||
682 | static int | |
683 | snd_harmony_mixercontrol_info(snd_kcontrol_t *kc, | |
684 | snd_ctl_elem_info_t *uinfo) | |
685 | { | |
686 | int mask = (kc->private_value >> 16) & 0xff; | |
687 | int left_shift = (kc->private_value) & 0xff; | |
688 | int right_shift = (kc->private_value >> 8) & 0xff; | |
689 | ||
690 | uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : | |
691 | SNDRV_CTL_ELEM_TYPE_INTEGER; | |
692 | uinfo->count = left_shift == right_shift ? 1 : 2; | |
693 | uinfo->value.integer.min = 0; | |
694 | uinfo->value.integer.max = mask; | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
699 | static int | |
700 | snd_harmony_volume_get(snd_kcontrol_t *kc, | |
701 | snd_ctl_elem_value_t *ucontrol) | |
702 | { | |
703 | harmony_t *h = snd_kcontrol_chip(kc); | |
704 | int shift_left = (kc->private_value) & 0xff; | |
705 | int shift_right = (kc->private_value >> 8) & 0xff; | |
706 | int mask = (kc->private_value >> 16) & 0xff; | |
707 | int invert = (kc->private_value >> 24) & 0xff; | |
708 | int left, right; | |
709 | unsigned long flags; | |
710 | ||
711 | spin_lock_irqsave(&h->mixer_lock, flags); | |
712 | ||
713 | left = (h->st.gain >> shift_left) & mask; | |
714 | right = (h->st.gain >> shift_right) & mask; | |
715 | ||
716 | if (invert) { | |
717 | left = mask - left; | |
718 | right = mask - right; | |
719 | } | |
720 | ucontrol->value.integer.value[0] = left; | |
721 | ucontrol->value.integer.value[1] = right; | |
722 | ||
723 | spin_unlock_irqrestore(&h->mixer_lock, flags); | |
724 | ||
725 | return 0; | |
726 | } | |
727 | ||
728 | static int | |
729 | snd_harmony_volume_put(snd_kcontrol_t *kc, | |
730 | snd_ctl_elem_value_t *ucontrol) | |
731 | { | |
732 | harmony_t *h = snd_kcontrol_chip(kc); | |
733 | int shift_left = (kc->private_value) & 0xff; | |
734 | int shift_right = (kc->private_value >> 8) & 0xff; | |
735 | int mask = (kc->private_value >> 16) & 0xff; | |
736 | int invert = (kc->private_value >> 24) & 0xff; | |
737 | int left, right; | |
738 | int old_gain = h->st.gain; | |
739 | unsigned long flags; | |
740 | ||
741 | left = ucontrol->value.integer.value[0] & mask; | |
742 | right = ucontrol->value.integer.value[1] & mask; | |
743 | if (invert) { | |
744 | left = mask - left; | |
745 | right = mask - right; | |
746 | } | |
747 | ||
748 | spin_lock_irqsave(&h->mixer_lock, flags); | |
749 | ||
750 | h->st.gain &= ~( (mask << shift_right) | (mask << shift_left) ); | |
751 | h->st.gain |= ( (left << shift_left) | (right << shift_right) ); | |
752 | snd_harmony_set_new_gain(h); | |
753 | ||
754 | spin_unlock_irqrestore(&h->mixer_lock, flags); | |
755 | ||
756 | return (old_gain - h->st.gain); | |
757 | } | |
758 | ||
759 | #define HARMONY_CONTROLS (sizeof(snd_harmony_controls)/ \ | |
760 | sizeof(snd_kcontrol_new_t)) | |
761 | ||
762 | #define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \ | |
763 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ | |
764 | .info = snd_harmony_mixercontrol_info, \ | |
765 | .get = snd_harmony_volume_get, .put = snd_harmony_volume_put, \ | |
766 | .private_value = ((left_shift) | ((right_shift) << 8) | \ | |
767 | ((mask) << 16) | ((invert) << 24)) } | |
768 | ||
769 | static snd_kcontrol_new_t snd_harmony_controls[] = { | |
770 | HARMONY_VOLUME("Playback Volume", HARMONY_GAIN_LO_SHIFT, | |
771 | HARMONY_GAIN_RO_SHIFT, HARMONY_GAIN_OUT, 1), | |
772 | HARMONY_VOLUME("Capture Volume", HARMONY_GAIN_LI_SHIFT, | |
773 | HARMONY_GAIN_RI_SHIFT, HARMONY_GAIN_IN, 0), | |
774 | }; | |
775 | ||
776 | static void __init | |
777 | snd_harmony_mixer_reset(harmony_t *h) | |
778 | { | |
779 | harmony_mute(h); | |
780 | harmony_reset(h); | |
781 | h->st.gain = HARMONY_GAIN_DEFAULT; | |
782 | harmony_unmute(h); | |
783 | } | |
784 | ||
785 | static int __init | |
786 | snd_harmony_mixer_init(harmony_t *h) | |
787 | { | |
788 | snd_card_t *card = h->card; | |
789 | int idx, err; | |
790 | ||
791 | snd_assert(h != NULL, return -EINVAL); | |
792 | strcpy(card->mixername, "Harmony Gain control interface"); | |
793 | ||
794 | for (idx = 0; idx < HARMONY_CONTROLS; idx++) { | |
795 | err = snd_ctl_add(card, | |
796 | snd_ctl_new1(&snd_harmony_controls[idx], h)); | |
797 | if (err < 0) | |
798 | return err; | |
799 | } | |
800 | ||
801 | snd_harmony_mixer_reset(h); | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
806 | static int | |
807 | snd_harmony_free(harmony_t *h) | |
808 | { | |
809 | if (h->gdma.addr) | |
810 | snd_dma_free_pages(&h->gdma); | |
811 | if (h->sdma.addr) | |
812 | snd_dma_free_pages(&h->sdma); | |
813 | ||
814 | if (h->irq >= 0) | |
815 | free_irq(h->irq, h); | |
816 | ||
817 | if (h->iobase) | |
818 | iounmap(h->iobase); | |
819 | ||
820 | parisc_set_drvdata(h->dev, NULL); | |
821 | ||
822 | kfree(h); | |
823 | return 0; | |
824 | } | |
825 | ||
826 | static int | |
827 | snd_harmony_dev_free(snd_device_t *dev) | |
828 | { | |
829 | harmony_t *h = dev->device_data; | |
830 | return snd_harmony_free(h); | |
831 | } | |
832 | ||
833 | static int __devinit | |
834 | snd_harmony_create(snd_card_t *card, | |
835 | struct parisc_device *padev, | |
836 | harmony_t **rchip) | |
837 | { | |
838 | int err; | |
839 | harmony_t *h; | |
840 | static snd_device_ops_t ops = { | |
841 | .dev_free = snd_harmony_dev_free, | |
842 | }; | |
843 | ||
844 | *rchip = NULL; | |
845 | ||
846 | h = kmalloc(sizeof(*h), GFP_KERNEL); | |
847 | if (h == NULL) | |
848 | return -ENOMEM; | |
849 | ||
850 | memset(&h->st, 0, sizeof(h->st)); | |
851 | memset(&h->stats, 0, sizeof(h->stats)); | |
852 | memset(&h->pbuf, 0, sizeof(h->pbuf)); | |
853 | memset(&h->cbuf, 0, sizeof(h->cbuf)); | |
854 | ||
53f01bba | 855 | h->hpa = padev->hpa.start; |
1da177e4 LT |
856 | h->card = card; |
857 | h->dev = padev; | |
858 | h->irq = padev->irq; | |
53f01bba | 859 | h->iobase = ioremap_nocache(padev->hpa.start, HARMONY_SIZE); |
1da177e4 LT |
860 | if (h->iobase == NULL) { |
861 | printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n", | |
53f01bba | 862 | padev->hpa.start); |
1da177e4 LT |
863 | err = -EBUSY; |
864 | goto free_and_ret; | |
865 | } | |
866 | ||
867 | err = request_irq(h->irq, snd_harmony_interrupt, 0, | |
868 | "harmony", h); | |
869 | if (err) { | |
870 | printk(KERN_ERR PFX "could not obtain interrupt %d", | |
871 | h->irq); | |
872 | goto free_and_ret; | |
873 | } | |
874 | ||
875 | spin_lock_init(&h->mixer_lock); | |
876 | spin_lock_init(&h->lock); | |
877 | ||
878 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, | |
879 | h, &ops)) < 0) { | |
880 | goto free_and_ret; | |
881 | } | |
882 | ||
a76af199 TI |
883 | snd_card_set_dev(card, &padev->dev); |
884 | ||
1da177e4 LT |
885 | *rchip = h; |
886 | ||
887 | return 0; | |
888 | ||
889 | free_and_ret: | |
890 | snd_harmony_free(h); | |
891 | return err; | |
892 | } | |
893 | ||
894 | static int __devinit | |
895 | snd_harmony_probe(struct parisc_device *padev) | |
896 | { | |
897 | int err; | |
898 | static int dev; | |
899 | snd_card_t *card; | |
900 | harmony_t *h; | |
901 | static int index = SNDRV_DEFAULT_IDX1; | |
902 | static char *id = SNDRV_DEFAULT_STR1; | |
903 | ||
904 | h = parisc_get_drvdata(padev); | |
905 | if (h != NULL) { | |
906 | return -ENODEV; | |
907 | } | |
908 | ||
909 | card = snd_card_new(index, id, THIS_MODULE, 0); | |
910 | if (card == NULL) | |
911 | return -ENOMEM; | |
912 | ||
913 | err = snd_harmony_create(card, padev, &h); | |
914 | if (err < 0) { | |
915 | goto free_and_ret; | |
916 | } | |
917 | ||
918 | err = snd_harmony_pcm_init(h); | |
919 | if (err < 0) { | |
920 | goto free_and_ret; | |
921 | } | |
922 | ||
923 | err = snd_harmony_mixer_init(h); | |
924 | if (err < 0) { | |
925 | goto free_and_ret; | |
926 | } | |
927 | ||
928 | strcpy(card->driver, "harmony"); | |
929 | strcpy(card->shortname, "Harmony"); | |
930 | sprintf(card->longname, "%s at 0x%lx, irq %i", | |
931 | card->shortname, h->hpa, h->irq); | |
932 | ||
933 | err = snd_card_register(card); | |
934 | if (err < 0) { | |
935 | goto free_and_ret; | |
936 | } | |
937 | ||
938 | dev++; | |
939 | parisc_set_drvdata(padev, h); | |
940 | ||
941 | return 0; | |
942 | ||
943 | free_and_ret: | |
944 | snd_card_free(card); | |
945 | return err; | |
946 | } | |
947 | ||
948 | static int __devexit | |
949 | snd_harmony_remove(struct parisc_device *padev) | |
950 | { | |
951 | harmony_t *h = parisc_get_drvdata(padev); | |
952 | snd_card_free(h->card); | |
953 | return 0; | |
954 | } | |
955 | ||
956 | static struct parisc_driver snd_harmony_driver = { | |
957 | .name = "harmony", | |
958 | .id_table = snd_harmony_devtable, | |
959 | .probe = snd_harmony_probe, | |
960 | .remove = snd_harmony_remove, | |
961 | }; | |
962 | ||
963 | static int __init | |
964 | alsa_harmony_init(void) | |
965 | { | |
966 | int err; | |
967 | ||
968 | err = register_parisc_driver(&snd_harmony_driver); | |
969 | if (err < 0) { | |
970 | printk(KERN_ERR PFX "device not found\n"); | |
971 | return err; | |
972 | } | |
973 | ||
974 | return 0; | |
975 | } | |
976 | ||
977 | static void __exit | |
978 | alsa_harmony_fini(void) | |
979 | { | |
980 | int err; | |
981 | ||
982 | err = unregister_parisc_driver(&snd_harmony_driver); | |
983 | if (err < 0) { | |
984 | printk(KERN_ERR PFX "failed to unregister\n"); | |
985 | } | |
986 | ||
987 | return; | |
988 | } | |
989 | ||
990 | MODULE_LICENSE("GPL"); | |
991 | MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>"); | |
992 | MODULE_DESCRIPTION("Harmony sound driver"); | |
993 | ||
994 | module_init(alsa_harmony_init); | |
995 | module_exit(alsa_harmony_fini); |