1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * PMac DBDMA lowlevel functions |
4 | * |
5 | * Copyright (c) by Takashi Iwai <tiwai@suse.de> |
6 | * code based on dmasound.c. |
7 | */ |
8 | |
9 | |
10 | #include <linux/io.h> |
11 | #include <asm/irq.h> |
12 | #include <linux/init.h> |
13 | #include <linux/delay.h> |
14 | #include <linux/slab.h> |
15 | #include <linux/interrupt.h> |
16 | #include <linux/pci.h> |
17 | #include <linux/dma-mapping.h> |
18 | #include <linux/of_address.h> |
19 | #include <linux/of_irq.h> |
20 | #include <sound/core.h> |
21 | #include "pmac.h" |
22 | #include <sound/pcm_params.h> |
23 | #include <asm/pmac_feature.h> |
24 | |
25 | |
26 | /* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */ |
27 | static const int awacs_freqs[8] = { |
28 | 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350 |
29 | }; |
30 | /* fixed frequency table for tumbler */ |
31 | static const int tumbler_freqs[1] = { |
32 | 44100 |
33 | }; |
34 | |
35 | |
36 | /* |
37 | * we will allocate a single 'emergency' dbdma cmd block to use if the |
38 | * tx status comes up "DEAD". This happens on some PowerComputing Pmac |
39 | * clones, either owing to a bug in dbdma or some interaction between |
40 | * IDE and sound. However, this measure would deal with DEAD status if |
41 | * it appeared elsewhere. |
42 | */ |
43 | static struct pmac_dbdma emergency_dbdma; |
44 | static int emergency_in_use; |
45 | |
46 | |
47 | /* |
48 | * allocate DBDMA command arrays |
49 | */ |
50 | static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size) |
51 | { |
52 | unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1); |
53 | |
54 | rec->space = dma_alloc_coherent(dev: &chip->pdev->dev, size: rsize, |
55 | dma_handle: &rec->dma_base, GFP_KERNEL); |
56 | if (rec->space == NULL) |
57 | return -ENOMEM; |
58 | rec->size = size; |
59 | memset(rec->space, 0, rsize); |
60 | rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space); |
61 | rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space); |
62 | |
63 | return 0; |
64 | } |
65 | |
66 | static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec) |
67 | { |
68 | if (rec->space) { |
69 | unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1); |
70 | |
71 | dma_free_coherent(dev: &chip->pdev->dev, size: rsize, cpu_addr: rec->space, dma_handle: rec->dma_base); |
72 | } |
73 | } |
74 | |
75 | |
76 | /* |
77 | * pcm stuff |
78 | */ |
79 | |
80 | /* |
81 | * look up frequency table |
82 | */ |
83 | |
84 | unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate) |
85 | { |
86 | int i, ok, found; |
87 | |
88 | ok = rec->cur_freqs; |
89 | if (rate > chip->freq_table[0]) |
90 | return 0; |
91 | found = 0; |
92 | for (i = 0; i < chip->num_freqs; i++, ok >>= 1) { |
93 | if (! (ok & 1)) continue; |
94 | found = i; |
95 | if (rate >= chip->freq_table[i]) |
96 | break; |
97 | } |
98 | return found; |
99 | } |
100 | |
101 | /* |
102 | * check whether another stream is active |
103 | */ |
104 | static inline int another_stream(int stream) |
105 | { |
106 | return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
107 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; |
108 | } |
109 | |
110 | /* |
111 | * get a stream of the opposite direction |
112 | */ |
113 | static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream) |
114 | { |
115 | switch (stream) { |
116 | case SNDRV_PCM_STREAM_PLAYBACK: |
117 | return &chip->playback; |
118 | case SNDRV_PCM_STREAM_CAPTURE: |
119 | return &chip->capture; |
120 | default: |
121 | snd_BUG(); |
122 | return NULL; |
123 | } |
124 | } |
125 | |
126 | /* |
127 | * wait while run status is on |
128 | */ |
129 | static inline void |
130 | snd_pmac_wait_ack(struct pmac_stream *rec) |
131 | { |
132 | int timeout = 50000; |
133 | while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0) |
134 | udelay(1); |
135 | } |
136 | |
137 | /* |
138 | * set the format and rate to the chip. |
139 | * call the lowlevel function if defined (e.g. for AWACS). |
140 | */ |
141 | static void snd_pmac_pcm_set_format(struct snd_pmac *chip) |
142 | { |
143 | /* set up frequency and format */ |
144 | out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8)); |
145 | out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0); |
146 | if (chip->set_format) |
147 | chip->set_format(chip); |
148 | } |
149 | |
150 | /* |
151 | * stop the DMA transfer |
152 | */ |
153 | static inline void snd_pmac_dma_stop(struct pmac_stream *rec) |
154 | { |
155 | out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16); |
156 | snd_pmac_wait_ack(rec); |
157 | } |
158 | |
159 | /* |
160 | * set the command pointer address |
161 | */ |
162 | static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd) |
163 | { |
164 | out_le32(&rec->dma->cmdptr, cmd->addr); |
165 | } |
166 | |
167 | /* |
168 | * start the DMA |
169 | */ |
170 | static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status) |
171 | { |
172 | out_le32(&rec->dma->control, status | (status << 16)); |
173 | } |
174 | |
175 | |
176 | /* |
177 | * prepare playback/capture stream |
178 | */ |
179 | static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs) |
180 | { |
181 | int i; |
182 | volatile struct dbdma_cmd __iomem *cp; |
183 | struct snd_pcm_runtime *runtime = subs->runtime; |
184 | int rate_index; |
185 | long offset; |
186 | struct pmac_stream *astr; |
187 | |
188 | rec->dma_size = snd_pcm_lib_buffer_bytes(substream: subs); |
189 | rec->period_size = snd_pcm_lib_period_bytes(substream: subs); |
190 | rec->nperiods = rec->dma_size / rec->period_size; |
191 | rec->cur_period = 0; |
192 | rate_index = snd_pmac_rate_index(chip, rec, rate: runtime->rate); |
193 | |
194 | /* set up constraints */ |
195 | astr = snd_pmac_get_stream(chip, stream: another_stream(stream: rec->stream)); |
196 | if (! astr) |
197 | return -EINVAL; |
198 | astr->cur_freqs = 1 << rate_index; |
199 | astr->cur_formats = 1 << runtime->format; |
200 | chip->rate_index = rate_index; |
201 | chip->format = runtime->format; |
202 | |
203 | /* We really want to execute a DMA stop command, after the AWACS |
204 | * is initialized. |
205 | * For reasons I don't understand, it stops the hissing noise |
206 | * common to many PowerBook G3 systems and random noise otherwise |
207 | * captured on iBook2's about every third time. -ReneR |
208 | */ |
209 | spin_lock_irq(lock: &chip->reg_lock); |
210 | snd_pmac_dma_stop(rec); |
211 | chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP); |
212 | snd_pmac_dma_set_command(rec, cmd: &chip->extra_dma); |
213 | snd_pmac_dma_run(rec, status: RUN); |
214 | spin_unlock_irq(lock: &chip->reg_lock); |
215 | mdelay(5); |
216 | spin_lock_irq(lock: &chip->reg_lock); |
217 | /* continuous DMA memory type doesn't provide the physical address, |
218 | * so we need to resolve the address here... |
219 | */ |
220 | offset = runtime->dma_addr; |
221 | for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) { |
222 | cp->phy_addr = cpu_to_le32(offset); |
223 | cp->req_count = cpu_to_le16(rec->period_size); |
224 | /*cp->res_count = cpu_to_le16(0);*/ |
225 | cp->xfer_status = cpu_to_le16(0); |
226 | offset += rec->period_size; |
227 | } |
228 | /* make loop */ |
229 | cp->command = cpu_to_le16(DBDMA_NOP | BR_ALWAYS); |
230 | cp->cmd_dep = cpu_to_le32(rec->cmd.addr); |
231 | |
232 | snd_pmac_dma_stop(rec); |
233 | snd_pmac_dma_set_command(rec, cmd: &rec->cmd); |
234 | spin_unlock_irq(lock: &chip->reg_lock); |
235 | |
236 | return 0; |
237 | } |
238 | |
239 | |
240 | /* |
241 | * PCM trigger/stop |
242 | */ |
243 | static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec, |
244 | struct snd_pcm_substream *subs, int cmd) |
245 | { |
246 | volatile struct dbdma_cmd __iomem *cp; |
247 | int i, command; |
248 | |
249 | switch (cmd) { |
250 | case SNDRV_PCM_TRIGGER_START: |
251 | case SNDRV_PCM_TRIGGER_RESUME: |
252 | if (rec->running) |
253 | return -EBUSY; |
254 | command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
255 | OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS; |
256 | spin_lock(lock: &chip->reg_lock); |
257 | snd_pmac_beep_stop(chip); |
258 | snd_pmac_pcm_set_format(chip); |
259 | for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) |
260 | out_le16(&cp->command, command); |
261 | snd_pmac_dma_set_command(rec, cmd: &rec->cmd); |
262 | (void)in_le32(&rec->dma->status); |
263 | snd_pmac_dma_run(rec, status: RUN|WAKE); |
264 | rec->running = 1; |
265 | spin_unlock(lock: &chip->reg_lock); |
266 | break; |
267 | |
268 | case SNDRV_PCM_TRIGGER_STOP: |
269 | case SNDRV_PCM_TRIGGER_SUSPEND: |
270 | spin_lock(lock: &chip->reg_lock); |
271 | rec->running = 0; |
272 | /*printk(KERN_DEBUG "stopped!!\n");*/ |
273 | snd_pmac_dma_stop(rec); |
274 | for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) |
275 | out_le16(&cp->command, DBDMA_STOP); |
276 | spin_unlock(lock: &chip->reg_lock); |
277 | break; |
278 | |
279 | default: |
280 | return -EINVAL; |
281 | } |
282 | |
283 | return 0; |
284 | } |
285 | |
286 | /* |
287 | * return the current pointer |
288 | */ |
289 | inline |
290 | static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip, |
291 | struct pmac_stream *rec, |
292 | struct snd_pcm_substream *subs) |
293 | { |
294 | int count = 0; |
295 | |
296 | #if 1 /* hmm.. how can we get the current dma pointer?? */ |
297 | int stat; |
298 | volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period]; |
299 | stat = le16_to_cpu(cp->xfer_status); |
300 | if (stat & (ACTIVE|DEAD)) { |
301 | count = in_le16(&cp->res_count); |
302 | if (count) |
303 | count = rec->period_size - count; |
304 | } |
305 | #endif |
306 | count += rec->cur_period * rec->period_size; |
307 | /*printk(KERN_DEBUG "pointer=%d\n", count);*/ |
308 | return bytes_to_frames(runtime: subs->runtime, size: count); |
309 | } |
310 | |
311 | /* |
312 | * playback |
313 | */ |
314 | |
315 | static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs) |
316 | { |
317 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
318 | return snd_pmac_pcm_prepare(chip, rec: &chip->playback, subs); |
319 | } |
320 | |
321 | static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs, |
322 | int cmd) |
323 | { |
324 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
325 | return snd_pmac_pcm_trigger(chip, rec: &chip->playback, subs, cmd); |
326 | } |
327 | |
328 | static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs) |
329 | { |
330 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
331 | return snd_pmac_pcm_pointer(chip, rec: &chip->playback, subs); |
332 | } |
333 | |
334 | |
335 | /* |
336 | * capture |
337 | */ |
338 | |
339 | static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs) |
340 | { |
341 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
342 | return snd_pmac_pcm_prepare(chip, rec: &chip->capture, subs); |
343 | } |
344 | |
345 | static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs, |
346 | int cmd) |
347 | { |
348 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
349 | return snd_pmac_pcm_trigger(chip, rec: &chip->capture, subs, cmd); |
350 | } |
351 | |
352 | static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs) |
353 | { |
354 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
355 | return snd_pmac_pcm_pointer(chip, rec: &chip->capture, subs); |
356 | } |
357 | |
358 | |
359 | /* |
360 | * Handle DEAD DMA transfers: |
361 | * if the TX status comes up "DEAD" - reported on some Power Computing machines |
362 | * we need to re-start the dbdma - but from a different physical start address |
363 | * and with a different transfer length. It would get very messy to do this |
364 | * with the normal dbdma_cmd blocks - we would have to re-write the buffer start |
365 | * addresses each time. So, we will keep a single dbdma_cmd block which can be |
366 | * fiddled with. |
367 | * When DEAD status is first reported the content of the faulted dbdma block is |
368 | * copied into the emergency buffer and we note that the buffer is in use. |
369 | * we then bump the start physical address by the amount that was successfully |
370 | * output before it died. |
371 | * On any subsequent DEAD result we just do the bump-ups (we know that we are |
372 | * already using the emergency dbdma_cmd). |
373 | * CHECK: this just tries to "do it". It is possible that we should abandon |
374 | * xfers when the number of residual bytes gets below a certain value - I can |
375 | * see that this might cause a loop-forever if a too small transfer causes |
376 | * DEAD status. However this is a TODO for now - we'll see what gets reported. |
377 | * When we get a successful transfer result with the emergency buffer we just |
378 | * pretend that it completed using the original dmdma_cmd and carry on. The |
379 | * 'next_cmd' field will already point back to the original loop of blocks. |
380 | */ |
381 | static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec, |
382 | volatile struct dbdma_cmd __iomem *cp) |
383 | { |
384 | unsigned short req, res ; |
385 | unsigned int phy ; |
386 | |
387 | /* printk(KERN_WARNING "snd-powermac: DMA died - patching it up!\n"); */ |
388 | |
389 | /* to clear DEAD status we must first clear RUN |
390 | set it to quiescent to be on the safe side */ |
391 | (void)in_le32(&rec->dma->status); |
392 | out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16); |
393 | |
394 | if (!emergency_in_use) { /* new problem */ |
395 | memcpy((void *)emergency_dbdma.cmds, (void *)cp, |
396 | sizeof(struct dbdma_cmd)); |
397 | emergency_in_use = 1; |
398 | cp->xfer_status = cpu_to_le16(0); |
399 | cp->req_count = cpu_to_le16(rec->period_size); |
400 | cp = emergency_dbdma.cmds; |
401 | } |
402 | |
403 | /* now bump the values to reflect the amount |
404 | we haven't yet shifted */ |
405 | req = le16_to_cpu(cp->req_count); |
406 | res = le16_to_cpu(cp->res_count); |
407 | phy = le32_to_cpu(cp->phy_addr); |
408 | phy += (req - res); |
409 | cp->req_count = cpu_to_le16(res); |
410 | cp->res_count = cpu_to_le16(0); |
411 | cp->xfer_status = cpu_to_le16(0); |
412 | cp->phy_addr = cpu_to_le32(phy); |
413 | |
414 | cp->cmd_dep = cpu_to_le32(rec->cmd.addr |
415 | + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods)); |
416 | |
417 | cp->command = cpu_to_le16(OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS); |
418 | |
419 | /* point at our patched up command block */ |
420 | out_le32(&rec->dma->cmdptr, emergency_dbdma.addr); |
421 | |
422 | /* we must re-start the controller */ |
423 | (void)in_le32(&rec->dma->status); |
424 | /* should complete clearing the DEAD status */ |
425 | out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE)); |
426 | } |
427 | |
428 | /* |
429 | * update playback/capture pointer from interrupts |
430 | */ |
431 | static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec) |
432 | { |
433 | volatile struct dbdma_cmd __iomem *cp; |
434 | int c; |
435 | int stat; |
436 | |
437 | spin_lock(lock: &chip->reg_lock); |
438 | if (rec->running) { |
439 | for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */ |
440 | |
441 | if (emergency_in_use) /* already using DEAD xfer? */ |
442 | cp = emergency_dbdma.cmds; |
443 | else |
444 | cp = &rec->cmd.cmds[rec->cur_period]; |
445 | |
446 | stat = le16_to_cpu(cp->xfer_status); |
447 | |
448 | if (stat & DEAD) { |
449 | snd_pmac_pcm_dead_xfer(rec, cp); |
450 | break; /* this block is still going */ |
451 | } |
452 | |
453 | if (emergency_in_use) |
454 | emergency_in_use = 0 ; /* done that */ |
455 | |
456 | if (! (stat & ACTIVE)) |
457 | break; |
458 | |
459 | /*printk(KERN_DEBUG "update frag %d\n", rec->cur_period);*/ |
460 | cp->xfer_status = cpu_to_le16(0); |
461 | cp->req_count = cpu_to_le16(rec->period_size); |
462 | /*cp->res_count = cpu_to_le16(0);*/ |
463 | rec->cur_period++; |
464 | if (rec->cur_period >= rec->nperiods) { |
465 | rec->cur_period = 0; |
466 | } |
467 | |
468 | spin_unlock(lock: &chip->reg_lock); |
469 | snd_pcm_period_elapsed(substream: rec->substream); |
470 | spin_lock(lock: &chip->reg_lock); |
471 | } |
472 | } |
473 | spin_unlock(lock: &chip->reg_lock); |
474 | } |
475 | |
476 | |
477 | /* |
478 | * hw info |
479 | */ |
480 | |
481 | static const struct snd_pcm_hardware snd_pmac_playback = |
482 | { |
483 | .info = (SNDRV_PCM_INFO_INTERLEAVED | |
484 | SNDRV_PCM_INFO_MMAP | |
485 | SNDRV_PCM_INFO_MMAP_VALID | |
486 | SNDRV_PCM_INFO_RESUME), |
487 | .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, |
488 | .rates = SNDRV_PCM_RATE_8000_44100, |
489 | .rate_min = 7350, |
490 | .rate_max = 44100, |
491 | .channels_min = 2, |
492 | .channels_max = 2, |
493 | .buffer_bytes_max = 131072, |
494 | .period_bytes_min = 256, |
495 | .period_bytes_max = 16384, |
496 | .periods_min = 3, |
497 | .periods_max = PMAC_MAX_FRAGS, |
498 | }; |
499 | |
500 | static const struct snd_pcm_hardware snd_pmac_capture = |
501 | { |
502 | .info = (SNDRV_PCM_INFO_INTERLEAVED | |
503 | SNDRV_PCM_INFO_MMAP | |
504 | SNDRV_PCM_INFO_MMAP_VALID | |
505 | SNDRV_PCM_INFO_RESUME), |
506 | .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, |
507 | .rates = SNDRV_PCM_RATE_8000_44100, |
508 | .rate_min = 7350, |
509 | .rate_max = 44100, |
510 | .channels_min = 2, |
511 | .channels_max = 2, |
512 | .buffer_bytes_max = 131072, |
513 | .period_bytes_min = 256, |
514 | .period_bytes_max = 16384, |
515 | .periods_min = 3, |
516 | .periods_max = PMAC_MAX_FRAGS, |
517 | }; |
518 | |
519 | |
520 | #if 0 // NYI |
521 | static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params, |
522 | struct snd_pcm_hw_rule *rule) |
523 | { |
524 | struct snd_pmac *chip = rule->private; |
525 | struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]); |
526 | int i, freq_table[8], num_freqs; |
527 | |
528 | if (! rec) |
529 | return -EINVAL; |
530 | num_freqs = 0; |
531 | for (i = chip->num_freqs - 1; i >= 0; i--) { |
532 | if (rec->cur_freqs & (1 << i)) |
533 | freq_table[num_freqs++] = chip->freq_table[i]; |
534 | } |
535 | |
536 | return snd_interval_list(hw_param_interval(params, rule->var), |
537 | num_freqs, freq_table, 0); |
538 | } |
539 | |
540 | static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params, |
541 | struct snd_pcm_hw_rule *rule) |
542 | { |
543 | struct snd_pmac *chip = rule->private; |
544 | struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]); |
545 | |
546 | if (! rec) |
547 | return -EINVAL; |
548 | return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), |
549 | rec->cur_formats); |
550 | } |
551 | #endif // NYI |
552 | |
553 | static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec, |
554 | struct snd_pcm_substream *subs) |
555 | { |
556 | struct snd_pcm_runtime *runtime = subs->runtime; |
557 | int i; |
558 | |
559 | /* look up frequency table and fill bit mask */ |
560 | runtime->hw.rates = 0; |
561 | for (i = 0; i < chip->num_freqs; i++) |
562 | if (chip->freqs_ok & (1 << i)) |
563 | runtime->hw.rates |= |
564 | snd_pcm_rate_to_rate_bit(rate: chip->freq_table[i]); |
565 | |
566 | /* check for minimum and maximum rates */ |
567 | for (i = 0; i < chip->num_freqs; i++) { |
568 | if (chip->freqs_ok & (1 << i)) { |
569 | runtime->hw.rate_max = chip->freq_table[i]; |
570 | break; |
571 | } |
572 | } |
573 | for (i = chip->num_freqs - 1; i >= 0; i--) { |
574 | if (chip->freqs_ok & (1 << i)) { |
575 | runtime->hw.rate_min = chip->freq_table[i]; |
576 | break; |
577 | } |
578 | } |
579 | runtime->hw.formats = chip->formats_ok; |
580 | if (chip->can_capture) { |
581 | if (! chip->can_duplex) |
582 | runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX; |
583 | runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; |
584 | } |
585 | runtime->private_data = rec; |
586 | rec->substream = subs; |
587 | |
588 | #if 0 /* FIXME: still under development.. */ |
589 | snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
590 | snd_pmac_hw_rule_rate, chip, rec->stream, -1); |
591 | snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
592 | snd_pmac_hw_rule_format, chip, rec->stream, -1); |
593 | #endif |
594 | |
595 | runtime->hw.periods_max = rec->cmd.size - 1; |
596 | |
597 | /* constraints to fix choppy sound */ |
598 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
599 | return 0; |
600 | } |
601 | |
602 | static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec, |
603 | struct snd_pcm_substream *subs) |
604 | { |
605 | struct pmac_stream *astr; |
606 | |
607 | snd_pmac_dma_stop(rec); |
608 | |
609 | astr = snd_pmac_get_stream(chip, stream: another_stream(stream: rec->stream)); |
610 | if (! astr) |
611 | return -EINVAL; |
612 | |
613 | /* reset constraints */ |
614 | astr->cur_freqs = chip->freqs_ok; |
615 | astr->cur_formats = chip->formats_ok; |
616 | |
617 | return 0; |
618 | } |
619 | |
620 | static int snd_pmac_playback_open(struct snd_pcm_substream *subs) |
621 | { |
622 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
623 | |
624 | subs->runtime->hw = snd_pmac_playback; |
625 | return snd_pmac_pcm_open(chip, rec: &chip->playback, subs); |
626 | } |
627 | |
628 | static int snd_pmac_capture_open(struct snd_pcm_substream *subs) |
629 | { |
630 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
631 | |
632 | subs->runtime->hw = snd_pmac_capture; |
633 | return snd_pmac_pcm_open(chip, rec: &chip->capture, subs); |
634 | } |
635 | |
636 | static int snd_pmac_playback_close(struct snd_pcm_substream *subs) |
637 | { |
638 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
639 | |
640 | return snd_pmac_pcm_close(chip, rec: &chip->playback, subs); |
641 | } |
642 | |
643 | static int snd_pmac_capture_close(struct snd_pcm_substream *subs) |
644 | { |
645 | struct snd_pmac *chip = snd_pcm_substream_chip(subs); |
646 | |
647 | return snd_pmac_pcm_close(chip, rec: &chip->capture, subs); |
648 | } |
649 | |
650 | /* |
651 | */ |
652 | |
653 | static const struct snd_pcm_ops snd_pmac_playback_ops = { |
654 | .open = snd_pmac_playback_open, |
655 | .close = snd_pmac_playback_close, |
656 | .prepare = snd_pmac_playback_prepare, |
657 | .trigger = snd_pmac_playback_trigger, |
658 | .pointer = snd_pmac_playback_pointer, |
659 | }; |
660 | |
661 | static const struct snd_pcm_ops snd_pmac_capture_ops = { |
662 | .open = snd_pmac_capture_open, |
663 | .close = snd_pmac_capture_close, |
664 | .prepare = snd_pmac_capture_prepare, |
665 | .trigger = snd_pmac_capture_trigger, |
666 | .pointer = snd_pmac_capture_pointer, |
667 | }; |
668 | |
669 | int snd_pmac_pcm_new(struct snd_pmac *chip) |
670 | { |
671 | struct snd_pcm *pcm; |
672 | int err; |
673 | int num_captures = 1; |
674 | |
675 | if (! chip->can_capture) |
676 | num_captures = 0; |
677 | err = snd_pcm_new(card: chip->card, id: chip->card->driver, device: 0, playback_count: 1, capture_count: num_captures, rpcm: &pcm); |
678 | if (err < 0) |
679 | return err; |
680 | |
681 | snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &snd_pmac_playback_ops); |
682 | if (chip->can_capture) |
683 | snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_CAPTURE, ops: &snd_pmac_capture_ops); |
684 | |
685 | pcm->private_data = chip; |
686 | pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; |
687 | strcpy(p: pcm->name, q: chip->card->shortname); |
688 | chip->pcm = pcm; |
689 | |
690 | chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE; |
691 | if (chip->can_byte_swap) |
692 | chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE; |
693 | |
694 | chip->playback.cur_formats = chip->formats_ok; |
695 | chip->capture.cur_formats = chip->formats_ok; |
696 | chip->playback.cur_freqs = chip->freqs_ok; |
697 | chip->capture.cur_freqs = chip->freqs_ok; |
698 | |
699 | /* preallocate 64k buffer */ |
700 | snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, |
701 | data: &chip->pdev->dev, |
702 | size: 64 * 1024, max: 64 * 1024); |
703 | |
704 | return 0; |
705 | } |
706 | |
707 | |
708 | static void snd_pmac_dbdma_reset(struct snd_pmac *chip) |
709 | { |
710 | out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); |
711 | snd_pmac_wait_ack(rec: &chip->playback); |
712 | out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); |
713 | snd_pmac_wait_ack(rec: &chip->capture); |
714 | } |
715 | |
716 | |
717 | /* |
718 | * handling beep |
719 | */ |
720 | void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed) |
721 | { |
722 | struct pmac_stream *rec = &chip->playback; |
723 | |
724 | snd_pmac_dma_stop(rec); |
725 | chip->extra_dma.cmds->req_count = cpu_to_le16(bytes); |
726 | chip->extra_dma.cmds->xfer_status = cpu_to_le16(0); |
727 | chip->extra_dma.cmds->cmd_dep = cpu_to_le32(chip->extra_dma.addr); |
728 | chip->extra_dma.cmds->phy_addr = cpu_to_le32(addr); |
729 | chip->extra_dma.cmds->command = cpu_to_le16(OUTPUT_MORE | BR_ALWAYS); |
730 | out_le32(&chip->awacs->control, |
731 | (in_le32(&chip->awacs->control) & ~0x1f00) |
732 | | (speed << 8)); |
733 | out_le32(&chip->awacs->byteswap, 0); |
734 | snd_pmac_dma_set_command(rec, cmd: &chip->extra_dma); |
735 | snd_pmac_dma_run(rec, RUN); |
736 | } |
737 | |
738 | void snd_pmac_beep_dma_stop(struct snd_pmac *chip) |
739 | { |
740 | snd_pmac_dma_stop(rec: &chip->playback); |
741 | chip->extra_dma.cmds->command = cpu_to_le16(DBDMA_STOP); |
742 | snd_pmac_pcm_set_format(chip); /* reset format */ |
743 | } |
744 | |
745 | |
746 | /* |
747 | * interrupt handlers |
748 | */ |
749 | static irqreturn_t |
750 | snd_pmac_tx_intr(int irq, void *devid) |
751 | { |
752 | struct snd_pmac *chip = devid; |
753 | snd_pmac_pcm_update(chip, rec: &chip->playback); |
754 | return IRQ_HANDLED; |
755 | } |
756 | |
757 | |
758 | static irqreturn_t |
759 | snd_pmac_rx_intr(int irq, void *devid) |
760 | { |
761 | struct snd_pmac *chip = devid; |
762 | snd_pmac_pcm_update(chip, rec: &chip->capture); |
763 | return IRQ_HANDLED; |
764 | } |
765 | |
766 | |
767 | static irqreturn_t |
768 | snd_pmac_ctrl_intr(int irq, void *devid) |
769 | { |
770 | struct snd_pmac *chip = devid; |
771 | int ctrl = in_le32(&chip->awacs->control); |
772 | |
773 | /*printk(KERN_DEBUG "pmac: control interrupt.. 0x%x\n", ctrl);*/ |
774 | if (ctrl & MASK_PORTCHG) { |
775 | /* do something when headphone is plugged/unplugged? */ |
776 | if (chip->update_automute) |
777 | chip->update_automute(chip, 1); |
778 | } |
779 | if (ctrl & MASK_CNTLERR) { |
780 | int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16; |
781 | if (err && chip->model <= PMAC_SCREAMER) |
782 | snd_printk(KERN_DEBUG "error %x\n" , err); |
783 | } |
784 | /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */ |
785 | out_le32(&chip->awacs->control, ctrl); |
786 | return IRQ_HANDLED; |
787 | } |
788 | |
789 | |
790 | /* |
791 | * a wrapper to feature call for compatibility |
792 | */ |
793 | static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable) |
794 | { |
795 | if (ppc_md.feature_call) |
796 | ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable); |
797 | } |
798 | |
799 | /* |
800 | * release resources |
801 | */ |
802 | |
803 | static int snd_pmac_free(struct snd_pmac *chip) |
804 | { |
805 | /* stop sounds */ |
806 | if (chip->initialized) { |
807 | snd_pmac_dbdma_reset(chip); |
808 | /* disable interrupts from awacs interface */ |
809 | out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff); |
810 | } |
811 | |
812 | if (chip->node) |
813 | snd_pmac_sound_feature(chip, enable: 0); |
814 | |
815 | /* clean up mixer if any */ |
816 | if (chip->mixer_free) |
817 | chip->mixer_free(chip); |
818 | |
819 | snd_pmac_detach_beep(chip); |
820 | |
821 | /* release resources */ |
822 | if (chip->irq >= 0) |
823 | free_irq(chip->irq, (void*)chip); |
824 | if (chip->tx_irq >= 0) |
825 | free_irq(chip->tx_irq, (void*)chip); |
826 | if (chip->rx_irq >= 0) |
827 | free_irq(chip->rx_irq, (void*)chip); |
828 | snd_pmac_dbdma_free(chip, rec: &chip->playback.cmd); |
829 | snd_pmac_dbdma_free(chip, rec: &chip->capture.cmd); |
830 | snd_pmac_dbdma_free(chip, rec: &chip->extra_dma); |
831 | snd_pmac_dbdma_free(chip, rec: &emergency_dbdma); |
832 | iounmap(addr: chip->macio_base); |
833 | iounmap(addr: chip->latch_base); |
834 | iounmap(addr: chip->awacs); |
835 | iounmap(addr: chip->playback.dma); |
836 | iounmap(addr: chip->capture.dma); |
837 | |
838 | if (chip->node) { |
839 | int i; |
840 | for (i = 0; i < 3; i++) { |
841 | if (chip->requested & (1 << i)) |
842 | release_mem_region(chip->rsrc[i].start, |
843 | resource_size(&chip->rsrc[i])); |
844 | } |
845 | } |
846 | |
847 | pci_dev_put(dev: chip->pdev); |
848 | of_node_put(node: chip->node); |
849 | kfree(objp: chip); |
850 | return 0; |
851 | } |
852 | |
853 | |
854 | /* |
855 | * free the device |
856 | */ |
857 | static int snd_pmac_dev_free(struct snd_device *device) |
858 | { |
859 | struct snd_pmac *chip = device->device_data; |
860 | return snd_pmac_free(chip); |
861 | } |
862 | |
863 | |
864 | /* |
865 | * check the machine support byteswap (little-endian) |
866 | */ |
867 | |
868 | static void detect_byte_swap(struct snd_pmac *chip) |
869 | { |
870 | struct device_node *mio; |
871 | |
872 | /* if seems that Keylargo can't byte-swap */ |
873 | for (mio = chip->node->parent; mio; mio = mio->parent) { |
874 | if (of_node_name_eq(np: mio, name: "mac-io" )) { |
875 | if (of_device_is_compatible(device: mio, "Keylargo" )) |
876 | chip->can_byte_swap = 0; |
877 | break; |
878 | } |
879 | } |
880 | |
881 | /* it seems the Pismo & iBook can't byte-swap in hardware. */ |
882 | if (of_machine_is_compatible(compat: "PowerBook3,1" ) || |
883 | of_machine_is_compatible(compat: "PowerBook2,1" )) |
884 | chip->can_byte_swap = 0 ; |
885 | |
886 | if (of_machine_is_compatible(compat: "PowerBook2,1" )) |
887 | chip->can_duplex = 0; |
888 | } |
889 | |
890 | |
891 | /* |
892 | * detect a sound chip |
893 | */ |
894 | static int snd_pmac_detect(struct snd_pmac *chip) |
895 | { |
896 | struct device_node *sound; |
897 | struct device_node *dn; |
898 | const unsigned int *prop; |
899 | unsigned int l; |
900 | struct macio_chip* macio; |
901 | |
902 | if (!machine_is(powermac)) |
903 | return -ENODEV; |
904 | |
905 | chip->subframe = 0; |
906 | chip->revision = 0; |
907 | chip->freqs_ok = 0xff; /* all ok */ |
908 | chip->model = PMAC_AWACS; |
909 | chip->can_byte_swap = 1; |
910 | chip->can_duplex = 1; |
911 | chip->can_capture = 1; |
912 | chip->num_freqs = ARRAY_SIZE(awacs_freqs); |
913 | chip->freq_table = awacs_freqs; |
914 | chip->pdev = NULL; |
915 | |
916 | chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */ |
917 | |
918 | /* check machine type */ |
919 | if (of_machine_is_compatible(compat: "AAPL,3400/2400" ) |
920 | || of_machine_is_compatible(compat: "AAPL,3500" )) |
921 | chip->is_pbook_3400 = 1; |
922 | else if (of_machine_is_compatible(compat: "PowerBook1,1" ) |
923 | || of_machine_is_compatible(compat: "AAPL,PowerBook1998" )) |
924 | chip->is_pbook_G3 = 1; |
925 | chip->node = of_find_node_by_name(NULL, name: "awacs" ); |
926 | sound = of_node_get(node: chip->node); |
927 | |
928 | /* |
929 | * powermac G3 models have a node called "davbus" |
930 | * with a child called "sound". |
931 | */ |
932 | if (!chip->node) |
933 | chip->node = of_find_node_by_name(NULL, name: "davbus" ); |
934 | /* |
935 | * if we didn't find a davbus device, try 'i2s-a' since |
936 | * this seems to be what iBooks have |
937 | */ |
938 | if (! chip->node) { |
939 | chip->node = of_find_node_by_name(NULL, name: "i2s-a" ); |
940 | if (chip->node && chip->node->parent && |
941 | chip->node->parent->parent) { |
942 | if (of_device_is_compatible(device: chip->node->parent->parent, |
943 | "K2-Keylargo" )) |
944 | chip->is_k2 = 1; |
945 | } |
946 | } |
947 | if (! chip->node) |
948 | return -ENODEV; |
949 | |
950 | if (!sound) { |
951 | for_each_node_by_name(sound, "sound" ) |
952 | if (sound->parent == chip->node) |
953 | break; |
954 | } |
955 | if (! sound) { |
956 | of_node_put(node: chip->node); |
957 | chip->node = NULL; |
958 | return -ENODEV; |
959 | } |
960 | prop = of_get_property(node: sound, name: "sub-frame" , NULL); |
961 | if (prop && *prop < 16) |
962 | chip->subframe = *prop; |
963 | prop = of_get_property(node: sound, name: "layout-id" , NULL); |
964 | if (prop) { |
965 | /* partly deprecate snd-powermac, for those machines |
966 | * that have a layout-id property for now */ |
967 | printk(KERN_INFO "snd-powermac no longer handles any " |
968 | "machines with a layout-id property " |
969 | "in the device-tree, use snd-aoa.\n" ); |
970 | of_node_put(node: sound); |
971 | of_node_put(node: chip->node); |
972 | chip->node = NULL; |
973 | return -ENODEV; |
974 | } |
975 | /* This should be verified on older screamers */ |
976 | if (of_device_is_compatible(device: sound, "screamer" )) { |
977 | chip->model = PMAC_SCREAMER; |
978 | // chip->can_byte_swap = 0; /* FIXME: check this */ |
979 | } |
980 | if (of_device_is_compatible(device: sound, "burgundy" )) { |
981 | chip->model = PMAC_BURGUNDY; |
982 | chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ |
983 | } |
984 | if (of_device_is_compatible(device: sound, "daca" )) { |
985 | chip->model = PMAC_DACA; |
986 | chip->can_capture = 0; /* no capture */ |
987 | chip->can_duplex = 0; |
988 | // chip->can_byte_swap = 0; /* FIXME: check this */ |
989 | chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ |
990 | } |
991 | if (of_device_is_compatible(device: sound, "tumbler" )) { |
992 | chip->model = PMAC_TUMBLER; |
993 | chip->can_capture = of_machine_is_compatible(compat: "PowerMac4,2" ) |
994 | || of_machine_is_compatible(compat: "PowerBook3,2" ) |
995 | || of_machine_is_compatible(compat: "PowerBook3,3" ) |
996 | || of_machine_is_compatible(compat: "PowerBook4,1" ) |
997 | || of_machine_is_compatible(compat: "PowerBook4,2" ) |
998 | || of_machine_is_compatible(compat: "PowerBook4,3" ); |
999 | chip->can_duplex = 0; |
1000 | // chip->can_byte_swap = 0; /* FIXME: check this */ |
1001 | chip->num_freqs = ARRAY_SIZE(tumbler_freqs); |
1002 | chip->freq_table = tumbler_freqs; |
1003 | chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ |
1004 | } |
1005 | if (of_device_is_compatible(device: sound, "snapper" )) { |
1006 | chip->model = PMAC_SNAPPER; |
1007 | // chip->can_byte_swap = 0; /* FIXME: check this */ |
1008 | chip->num_freqs = ARRAY_SIZE(tumbler_freqs); |
1009 | chip->freq_table = tumbler_freqs; |
1010 | chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ |
1011 | } |
1012 | prop = of_get_property(node: sound, name: "device-id" , NULL); |
1013 | if (prop) |
1014 | chip->device_id = *prop; |
1015 | dn = of_find_node_by_name(NULL, name: "perch" ); |
1016 | chip->has_iic = (dn != NULL); |
1017 | of_node_put(node: dn); |
1018 | |
1019 | /* We need the PCI device for DMA allocations, let's use a crude method |
1020 | * for now ... |
1021 | */ |
1022 | macio = macio_find(chip->node, macio_unknown); |
1023 | if (macio == NULL) |
1024 | printk(KERN_WARNING "snd-powermac: can't locate macio !\n" ); |
1025 | else { |
1026 | struct pci_dev *pdev = NULL; |
1027 | |
1028 | for_each_pci_dev(pdev) { |
1029 | struct device_node *np = pci_device_to_OF_node(pdev); |
1030 | if (np && np == macio->of_node) { |
1031 | chip->pdev = pdev; |
1032 | break; |
1033 | } |
1034 | } |
1035 | } |
1036 | if (chip->pdev == NULL) |
1037 | printk(KERN_WARNING "snd-powermac: can't locate macio PCI" |
1038 | " device !\n" ); |
1039 | |
1040 | detect_byte_swap(chip); |
1041 | |
1042 | /* look for a property saying what sample rates |
1043 | are available */ |
1044 | prop = of_get_property(node: sound, name: "sample-rates" , lenp: &l); |
1045 | if (! prop) |
1046 | prop = of_get_property(node: sound, name: "output-frame-rates" , lenp: &l); |
1047 | if (prop) { |
1048 | int i; |
1049 | chip->freqs_ok = 0; |
1050 | for (l /= sizeof(int); l > 0; --l) { |
1051 | unsigned int r = *prop++; |
1052 | /* Apple 'Fixed' format */ |
1053 | if (r >= 0x10000) |
1054 | r >>= 16; |
1055 | for (i = 0; i < chip->num_freqs; ++i) { |
1056 | if (r == chip->freq_table[i]) { |
1057 | chip->freqs_ok |= (1 << i); |
1058 | break; |
1059 | } |
1060 | } |
1061 | } |
1062 | } else { |
1063 | /* assume only 44.1khz */ |
1064 | chip->freqs_ok = 1; |
1065 | } |
1066 | |
1067 | of_node_put(node: sound); |
1068 | return 0; |
1069 | } |
1070 | |
1071 | #ifdef PMAC_SUPPORT_AUTOMUTE |
1072 | /* |
1073 | * auto-mute |
1074 | */ |
1075 | static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol, |
1076 | struct snd_ctl_elem_value *ucontrol) |
1077 | { |
1078 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
1079 | ucontrol->value.integer.value[0] = chip->auto_mute; |
1080 | return 0; |
1081 | } |
1082 | |
1083 | static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol, |
1084 | struct snd_ctl_elem_value *ucontrol) |
1085 | { |
1086 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
1087 | if (ucontrol->value.integer.value[0] != chip->auto_mute) { |
1088 | chip->auto_mute = !!ucontrol->value.integer.value[0]; |
1089 | if (chip->update_automute) |
1090 | chip->update_automute(chip, 1); |
1091 | return 1; |
1092 | } |
1093 | return 0; |
1094 | } |
1095 | |
1096 | static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol, |
1097 | struct snd_ctl_elem_value *ucontrol) |
1098 | { |
1099 | struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); |
1100 | if (chip->detect_headphone) |
1101 | ucontrol->value.integer.value[0] = chip->detect_headphone(chip); |
1102 | else |
1103 | ucontrol->value.integer.value[0] = 0; |
1104 | return 0; |
1105 | } |
1106 | |
1107 | static const struct snd_kcontrol_new auto_mute_controls[] = { |
1108 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1109 | .name = "Auto Mute Switch" , |
1110 | .info = snd_pmac_boolean_mono_info, |
1111 | .get = pmac_auto_mute_get, |
1112 | .put = pmac_auto_mute_put, |
1113 | }, |
1114 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1115 | .name = "Headphone Detection" , |
1116 | .access = SNDRV_CTL_ELEM_ACCESS_READ, |
1117 | .info = snd_pmac_boolean_mono_info, |
1118 | .get = pmac_hp_detect_get, |
1119 | }, |
1120 | }; |
1121 | |
1122 | int snd_pmac_add_automute(struct snd_pmac *chip) |
1123 | { |
1124 | int err; |
1125 | chip->auto_mute = 1; |
1126 | err = snd_ctl_add(card: chip->card, kcontrol: snd_ctl_new1(kcontrolnew: &auto_mute_controls[0], private_data: chip)); |
1127 | if (err < 0) { |
1128 | printk(KERN_ERR "snd-powermac: Failed to add automute control\n" ); |
1129 | return err; |
1130 | } |
1131 | chip->hp_detect_ctl = snd_ctl_new1(kcontrolnew: &auto_mute_controls[1], private_data: chip); |
1132 | return snd_ctl_add(card: chip->card, kcontrol: chip->hp_detect_ctl); |
1133 | } |
1134 | #endif /* PMAC_SUPPORT_AUTOMUTE */ |
1135 | |
1136 | /* |
1137 | * create and detect a pmac chip record |
1138 | */ |
1139 | int snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return) |
1140 | { |
1141 | struct snd_pmac *chip; |
1142 | struct device_node *np; |
1143 | int i, err; |
1144 | unsigned int irq; |
1145 | unsigned long ctrl_addr, txdma_addr, rxdma_addr; |
1146 | static const struct snd_device_ops ops = { |
1147 | .dev_free = snd_pmac_dev_free, |
1148 | }; |
1149 | |
1150 | *chip_return = NULL; |
1151 | |
1152 | chip = kzalloc(size: sizeof(*chip), GFP_KERNEL); |
1153 | if (chip == NULL) |
1154 | return -ENOMEM; |
1155 | chip->card = card; |
1156 | |
1157 | spin_lock_init(&chip->reg_lock); |
1158 | chip->irq = chip->tx_irq = chip->rx_irq = -1; |
1159 | |
1160 | chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK; |
1161 | chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE; |
1162 | |
1163 | err = snd_pmac_detect(chip); |
1164 | if (err < 0) |
1165 | goto __error; |
1166 | |
1167 | if (snd_pmac_dbdma_alloc(chip, rec: &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 || |
1168 | snd_pmac_dbdma_alloc(chip, rec: &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 || |
1169 | snd_pmac_dbdma_alloc(chip, rec: &chip->extra_dma, size: 2) < 0 || |
1170 | snd_pmac_dbdma_alloc(chip, rec: &emergency_dbdma, size: 2) < 0) { |
1171 | err = -ENOMEM; |
1172 | goto __error; |
1173 | } |
1174 | |
1175 | np = chip->node; |
1176 | chip->requested = 0; |
1177 | if (chip->is_k2) { |
1178 | static const char * const rnames[] = { |
1179 | "Sound Control" , "Sound DMA" }; |
1180 | for (i = 0; i < 2; i ++) { |
1181 | if (of_address_to_resource(dev: np->parent, index: i, |
1182 | r: &chip->rsrc[i])) { |
1183 | printk(KERN_ERR "snd: can't translate rsrc " |
1184 | " %d (%s)\n" , i, rnames[i]); |
1185 | err = -ENODEV; |
1186 | goto __error; |
1187 | } |
1188 | if (request_mem_region(chip->rsrc[i].start, |
1189 | resource_size(&chip->rsrc[i]), |
1190 | rnames[i]) == NULL) { |
1191 | printk(KERN_ERR "snd: can't request rsrc " |
1192 | " %d (%s: %pR)\n" , |
1193 | i, rnames[i], &chip->rsrc[i]); |
1194 | err = -ENODEV; |
1195 | goto __error; |
1196 | } |
1197 | chip->requested |= (1 << i); |
1198 | } |
1199 | ctrl_addr = chip->rsrc[0].start; |
1200 | txdma_addr = chip->rsrc[1].start; |
1201 | rxdma_addr = txdma_addr + 0x100; |
1202 | } else { |
1203 | static const char * const rnames[] = { |
1204 | "Sound Control" , "Sound Tx DMA" , "Sound Rx DMA" }; |
1205 | for (i = 0; i < 3; i ++) { |
1206 | if (of_address_to_resource(dev: np, index: i, |
1207 | r: &chip->rsrc[i])) { |
1208 | printk(KERN_ERR "snd: can't translate rsrc " |
1209 | " %d (%s)\n" , i, rnames[i]); |
1210 | err = -ENODEV; |
1211 | goto __error; |
1212 | } |
1213 | if (request_mem_region(chip->rsrc[i].start, |
1214 | resource_size(&chip->rsrc[i]), |
1215 | rnames[i]) == NULL) { |
1216 | printk(KERN_ERR "snd: can't request rsrc " |
1217 | " %d (%s: %pR)\n" , |
1218 | i, rnames[i], &chip->rsrc[i]); |
1219 | err = -ENODEV; |
1220 | goto __error; |
1221 | } |
1222 | chip->requested |= (1 << i); |
1223 | } |
1224 | ctrl_addr = chip->rsrc[0].start; |
1225 | txdma_addr = chip->rsrc[1].start; |
1226 | rxdma_addr = chip->rsrc[2].start; |
1227 | } |
1228 | |
1229 | chip->awacs = ioremap(offset: ctrl_addr, size: 0x1000); |
1230 | chip->playback.dma = ioremap(offset: txdma_addr, size: 0x100); |
1231 | chip->capture.dma = ioremap(offset: rxdma_addr, size: 0x100); |
1232 | if (chip->model <= PMAC_BURGUNDY) { |
1233 | irq = irq_of_parse_and_map(node: np, index: 0); |
1234 | if (request_irq(irq, handler: snd_pmac_ctrl_intr, flags: 0, |
1235 | name: "PMac" , dev: (void*)chip)) { |
1236 | snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n" , |
1237 | irq); |
1238 | err = -EBUSY; |
1239 | goto __error; |
1240 | } |
1241 | chip->irq = irq; |
1242 | } |
1243 | irq = irq_of_parse_and_map(node: np, index: 1); |
1244 | if (request_irq(irq, handler: snd_pmac_tx_intr, flags: 0, name: "PMac Output" , dev: (void*)chip)){ |
1245 | snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n" , irq); |
1246 | err = -EBUSY; |
1247 | goto __error; |
1248 | } |
1249 | chip->tx_irq = irq; |
1250 | irq = irq_of_parse_and_map(node: np, index: 2); |
1251 | if (request_irq(irq, handler: snd_pmac_rx_intr, flags: 0, name: "PMac Input" , dev: (void*)chip)) { |
1252 | snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n" , irq); |
1253 | err = -EBUSY; |
1254 | goto __error; |
1255 | } |
1256 | chip->rx_irq = irq; |
1257 | |
1258 | snd_pmac_sound_feature(chip, enable: 1); |
1259 | |
1260 | /* reset & enable interrupts */ |
1261 | if (chip->model <= PMAC_BURGUNDY) |
1262 | out_le32(&chip->awacs->control, chip->control_mask); |
1263 | |
1264 | /* Powerbooks have odd ways of enabling inputs such as |
1265 | an expansion-bay CD or sound from an internal modem |
1266 | or a PC-card modem. */ |
1267 | if (chip->is_pbook_3400) { |
1268 | /* Enable CD and PC-card sound inputs. */ |
1269 | /* This is done by reading from address |
1270 | * f301a000, + 0x10 to enable the expansion-bay |
1271 | * CD sound input, + 0x80 to enable the PC-card |
1272 | * sound input. The 0x100 enables the SCSI bus |
1273 | * terminator power. |
1274 | */ |
1275 | chip->latch_base = ioremap (offset: 0xf301a000, size: 0x1000); |
1276 | in_8(chip->latch_base + 0x190); |
1277 | } else if (chip->is_pbook_G3) { |
1278 | struct device_node* mio; |
1279 | for (mio = chip->node->parent; mio; mio = mio->parent) { |
1280 | if (of_node_name_eq(np: mio, name: "mac-io" )) { |
1281 | struct resource r; |
1282 | if (of_address_to_resource(dev: mio, index: 0, r: &r) == 0) |
1283 | chip->macio_base = |
1284 | ioremap(offset: r.start, size: 0x40); |
1285 | break; |
1286 | } |
1287 | } |
1288 | /* Enable CD sound input. */ |
1289 | /* The relevant bits for writing to this byte are 0x8f. |
1290 | * I haven't found out what the 0x80 bit does. |
1291 | * For the 0xf bits, writing 3 or 7 enables the CD |
1292 | * input, any other value disables it. Values |
1293 | * 1, 3, 5, 7 enable the microphone. Values 0, 2, |
1294 | * 4, 6, 8 - f enable the input from the modem. |
1295 | */ |
1296 | if (chip->macio_base) |
1297 | out_8(chip->macio_base + 0x37, 3); |
1298 | } |
1299 | |
1300 | /* Reset dbdma channels */ |
1301 | snd_pmac_dbdma_reset(chip); |
1302 | |
1303 | err = snd_device_new(card, type: SNDRV_DEV_LOWLEVEL, device_data: chip, ops: &ops); |
1304 | if (err < 0) |
1305 | goto __error; |
1306 | |
1307 | *chip_return = chip; |
1308 | return 0; |
1309 | |
1310 | __error: |
1311 | snd_pmac_free(chip); |
1312 | return err; |
1313 | } |
1314 | |
1315 | |
1316 | /* |
1317 | * sleep notify for powerbook |
1318 | */ |
1319 | |
1320 | #ifdef CONFIG_PM |
1321 | |
1322 | /* |
1323 | * Save state when going to sleep, restore it afterwards. |
1324 | */ |
1325 | |
1326 | void snd_pmac_suspend(struct snd_pmac *chip) |
1327 | { |
1328 | unsigned long flags; |
1329 | |
1330 | snd_power_change_state(card: chip->card, SNDRV_CTL_POWER_D3hot); |
1331 | if (chip->suspend) |
1332 | chip->suspend(chip); |
1333 | spin_lock_irqsave(&chip->reg_lock, flags); |
1334 | snd_pmac_beep_stop(chip); |
1335 | spin_unlock_irqrestore(lock: &chip->reg_lock, flags); |
1336 | if (chip->irq >= 0) |
1337 | disable_irq(irq: chip->irq); |
1338 | if (chip->tx_irq >= 0) |
1339 | disable_irq(irq: chip->tx_irq); |
1340 | if (chip->rx_irq >= 0) |
1341 | disable_irq(irq: chip->rx_irq); |
1342 | snd_pmac_sound_feature(chip, enable: 0); |
1343 | } |
1344 | |
1345 | void snd_pmac_resume(struct snd_pmac *chip) |
1346 | { |
1347 | snd_pmac_sound_feature(chip, enable: 1); |
1348 | if (chip->resume) |
1349 | chip->resume(chip); |
1350 | /* enable CD sound input */ |
1351 | if (chip->macio_base && chip->is_pbook_G3) |
1352 | out_8(chip->macio_base + 0x37, 3); |
1353 | else if (chip->is_pbook_3400) |
1354 | in_8(chip->latch_base + 0x190); |
1355 | |
1356 | snd_pmac_pcm_set_format(chip); |
1357 | |
1358 | if (chip->irq >= 0) |
1359 | enable_irq(irq: chip->irq); |
1360 | if (chip->tx_irq >= 0) |
1361 | enable_irq(irq: chip->tx_irq); |
1362 | if (chip->rx_irq >= 0) |
1363 | enable_irq(irq: chip->rx_irq); |
1364 | |
1365 | snd_power_change_state(card: chip->card, SNDRV_CTL_POWER_D0); |
1366 | } |
1367 | |
1368 | #endif /* CONFIG_PM */ |
1369 | |
1370 | |