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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / sound / isa / sb / sb16_main.c
blobf7e8192270ae1796a302b1893f3b18136a1f8bee
1 /*
2 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
3 * Routines for control of 16-bit SoundBlaster cards and clones
4 * Note: This is very ugly hardware which uses one 8-bit DMA channel and
5 * second 16-bit DMA channel. Unfortunately 8-bit DMA channel can't
6 * transfer 16-bit samples and 16-bit DMA channels can't transfer
7 * 8-bit samples. This make full duplex more complicated than
8 * can be... People, don't buy these soundcards for full 16-bit
9 * duplex!!!
10 * Note: 16-bit wide is assigned to first direction which made request.
11 * With full duplex - playback is preferred with abstract layer.
12 *
13 * Note: Some chip revisions have hardware bug. Changing capture
14 * channel from full-duplex 8bit DMA to 16bit DMA will block
15 * 16bit DMA transfers from DSP chip (capture) until 8bit transfer
16 * to DSP chip (playback) starts. This bug can be avoided with
17 * "16bit DMA Allocation" setting set to Playback or Capture.
18 *
19 *
20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2 of the License, or
23 * (at your option) any later version.
24 *
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
29 *
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 *
34 */
35
36 #include <asm/io.h>
37 #include <asm/dma.h>
38 #include <linux/init.h>
39 #include <linux/time.h>
40 #include <sound/core.h>
41 #include <sound/sb.h>
42 #include <sound/sb16_csp.h>
43 #include <sound/mpu401.h>
44 #include <sound/control.h>
45 #include <sound/info.h>
46
47 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
48 MODULE_DESCRIPTION("Routines for control of 16-bit SoundBlaster cards and clones");
49 MODULE_LICENSE("GPL");
50
51 #ifdef CONFIG_SND_SB16_CSP
52 static void snd_sb16_csp_playback_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
53 {
54 if (chip->hardware == SB_HW_16CSP) {
55 struct snd_sb_csp *csp = chip->csp;
56
57 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
58 /* manually loaded codec */
59 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) &&
60 ((1U << runtime->format) == csp->acc_format)) {
61 /* Supported runtime PCM format for playback */
62 if (csp->ops.csp_use(csp) == 0) {
63 /* If CSP was successfully acquired */
64 goto __start_CSP;
65 }
66 } else if ((csp->mode & SNDRV_SB_CSP_MODE_QSOUND) && (csp->q_enabled)) {
67 /* QSound decoder is loaded and enabled */
68 if ((1 << runtime->format) & (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
69 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE)) {
70 /* Only for simple PCM formats */
71 if (csp->ops.csp_use(csp) == 0) {
72 /* If CSP was successfully acquired */
73 goto __start_CSP;
74 }
75 }
76 }
77 } else if (csp->ops.csp_use(csp) == 0) {
78 /* Acquire CSP and try to autoload hardware codec */
79 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_WRITE)) {
80 /* Unsupported format, release CSP */
81 csp->ops.csp_unuse(csp);
82 } else {
83 __start_CSP:
84 /* Try to start CSP */
85 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_PLAYBACK_16) ?
86 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
87 (runtime->channels > 1) ?
88 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
89 /* Failed, release CSP */
90 csp->ops.csp_unuse(csp);
91 } else {
92 /* Success, CSP acquired and running */
93 chip->open = SNDRV_SB_CSP_MODE_DSP_WRITE;
94 }
95 }
96 }
97 }
98 }
99
100 static void snd_sb16_csp_capture_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
101 {
102 if (chip->hardware == SB_HW_16CSP) {
103 struct snd_sb_csp *csp = chip->csp;
104
105 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
106 /* manually loaded codec */
107 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) &&
108 ((1U << runtime->format) == csp->acc_format)) {
109 /* Supported runtime PCM format for capture */
110 if (csp->ops.csp_use(csp) == 0) {
111 /* If CSP was successfully acquired */
112 goto __start_CSP;
113 }
114 }
115 } else if (csp->ops.csp_use(csp) == 0) {
116 /* Acquire CSP and try to autoload hardware codec */
117 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_READ)) {
118 /* Unsupported format, release CSP */
119 csp->ops.csp_unuse(csp);
120 } else {
121 __start_CSP:
122 /* Try to start CSP */
123 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_CAPTURE_16) ?
124 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
125 (runtime->channels > 1) ?
126 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
127 /* Failed, release CSP */
128 csp->ops.csp_unuse(csp);
129 } else {
130 /* Success, CSP acquired and running */
131 chip->open = SNDRV_SB_CSP_MODE_DSP_READ;
132 }
133 }
134 }
135 }
136 }
137
138 static void snd_sb16_csp_update(struct snd_sb *chip)
139 {
140 if (chip->hardware == SB_HW_16CSP) {
141 struct snd_sb_csp *csp = chip->csp;
142
143 if (csp->qpos_changed) {
144 spin_lock(&chip->reg_lock);
145 csp->ops.csp_qsound_transfer (csp);
146 spin_unlock(&chip->reg_lock);
147 }
148 }
149 }
150
151 static void snd_sb16_csp_playback_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
152 {
153 /* CSP decoders (QSound excluded) support only 16bit transfers */
154 if (chip->hardware == SB_HW_16CSP) {
155 struct snd_sb_csp *csp = chip->csp;
156
157 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
158 /* manually loaded codec */
159 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) {
160 runtime->hw.formats |= csp->acc_format;
161 }
162 } else {
163 /* autoloaded codecs */
164 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
165 SNDRV_PCM_FMTBIT_IMA_ADPCM;
166 }
167 }
168 }
169
170 static void snd_sb16_csp_playback_close(struct snd_sb *chip)
171 {
172 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) {
173 struct snd_sb_csp *csp = chip->csp;
174
175 if (csp->ops.csp_stop(csp) == 0) {
176 csp->ops.csp_unuse(csp);
177 chip->open = 0;
178 }
179 }
180 }
181
182 static void snd_sb16_csp_capture_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
183 {
184 /* CSP coders support only 16bit transfers */
185 if (chip->hardware == SB_HW_16CSP) {
186 struct snd_sb_csp *csp = chip->csp;
187
188 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
189 /* manually loaded codec */
190 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) {
191 runtime->hw.formats |= csp->acc_format;
192 }
193 } else {
194 /* autoloaded codecs */
195 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
196 SNDRV_PCM_FMTBIT_IMA_ADPCM;
197 }
198 }
199 }
200
201 static void snd_sb16_csp_capture_close(struct snd_sb *chip)
202 {
203 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) {
204 struct snd_sb_csp *csp = chip->csp;
205
206 if (csp->ops.csp_stop(csp) == 0) {
207 csp->ops.csp_unuse(csp);
208 chip->open = 0;
209 }
210 }
211 }
212 #else
213 #define snd_sb16_csp_playback_prepare(chip, runtime) /*nop*/
214 #define snd_sb16_csp_capture_prepare(chip, runtime) /*nop*/
215 #define snd_sb16_csp_update(chip) /*nop*/
216 #define snd_sb16_csp_playback_open(chip, runtime) /*nop*/
217 #define snd_sb16_csp_playback_close(chip) /*nop*/
218 #define snd_sb16_csp_capture_open(chip, runtime) /*nop*/
219 #define snd_sb16_csp_capture_close(chip) /*nop*/
220 #endif
221
222
223 static void snd_sb16_setup_rate(struct snd_sb *chip,
224 unsigned short rate,
225 int channel)
226 {
227 unsigned long flags;
228
229 spin_lock_irqsave(&chip->reg_lock, flags);
230 if (chip->mode & (channel == SNDRV_PCM_STREAM_PLAYBACK ? SB_MODE_PLAYBACK_16 : SB_MODE_CAPTURE_16))
231 snd_sb_ack_16bit(chip);
232 else
233 snd_sb_ack_8bit(chip);
234 if (!(chip->mode & SB_RATE_LOCK)) {
235 chip->locked_rate = rate;
236 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_IN);
237 snd_sbdsp_command(chip, rate >> 8);
238 snd_sbdsp_command(chip, rate & 0xff);
239 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
240 snd_sbdsp_command(chip, rate >> 8);
241 snd_sbdsp_command(chip, rate & 0xff);
242 }
243 spin_unlock_irqrestore(&chip->reg_lock, flags);
244 }
245
246 static int snd_sb16_hw_params(struct snd_pcm_substream *substream,
247 struct snd_pcm_hw_params *hw_params)
248 {
249 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
250 }
251
252 static int snd_sb16_hw_free(struct snd_pcm_substream *substream)
253 {
254 snd_pcm_lib_free_pages(substream);
255 return 0;
256 }
257
258 static int snd_sb16_playback_prepare(struct snd_pcm_substream *substream)
259 {
260 unsigned long flags;
261 struct snd_sb *chip = snd_pcm_substream_chip(substream);
262 struct snd_pcm_runtime *runtime = substream->runtime;
263 unsigned char format;
264 unsigned int size, count, dma;
265
266 snd_sb16_csp_playback_prepare(chip, runtime);
267 if (snd_pcm_format_unsigned(runtime->format) > 0) {
268 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
269 } else {
270 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
271 }
272
273 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_PLAYBACK);
274 size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream);
275 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
276 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
277
278 count = snd_pcm_lib_period_bytes(substream);
279 spin_lock_irqsave(&chip->reg_lock, flags);
280 if (chip->mode & SB_MODE_PLAYBACK_16) {
281 count >>= 1;
282 count--;
283 snd_sbdsp_command(chip, SB_DSP4_OUT16_AI);
284 snd_sbdsp_command(chip, format);
285 snd_sbdsp_command(chip, count & 0xff);
286 snd_sbdsp_command(chip, count >> 8);
287 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
288 } else {
289 count--;
290 snd_sbdsp_command(chip, SB_DSP4_OUT8_AI);
291 snd_sbdsp_command(chip, format);
292 snd_sbdsp_command(chip, count & 0xff);
293 snd_sbdsp_command(chip, count >> 8);
294 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
295 }
296 spin_unlock_irqrestore(&chip->reg_lock, flags);
297 return 0;
298 }
299
300 static int snd_sb16_playback_trigger(struct snd_pcm_substream *substream,
301 int cmd)
302 {
303 struct snd_sb *chip = snd_pcm_substream_chip(substream);
304 int result = 0;
305
306 spin_lock(&chip->reg_lock);
307 switch (cmd) {
308 case SNDRV_PCM_TRIGGER_START:
309 case SNDRV_PCM_TRIGGER_RESUME:
310 chip->mode |= SB_RATE_LOCK_PLAYBACK;
311 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
312 break;
313 case SNDRV_PCM_TRIGGER_STOP:
314 case SNDRV_PCM_TRIGGER_SUSPEND:
315 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
316 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
317 if (chip->mode & SB_RATE_LOCK_CAPTURE)
318 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
319 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
320 break;
321 default:
322 result = -EINVAL;
323 }
324 spin_unlock(&chip->reg_lock);
325 return result;
326 }
327
328 static int snd_sb16_capture_prepare(struct snd_pcm_substream *substream)
329 {
330 unsigned long flags;
331 struct snd_sb *chip = snd_pcm_substream_chip(substream);
332 struct snd_pcm_runtime *runtime = substream->runtime;
333 unsigned char format;
334 unsigned int size, count, dma;
335
336 snd_sb16_csp_capture_prepare(chip, runtime);
337 if (snd_pcm_format_unsigned(runtime->format) > 0) {
338 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
339 } else {
340 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
341 }
342 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE);
343 size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
344 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
345 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
346
347 count = snd_pcm_lib_period_bytes(substream);
348 spin_lock_irqsave(&chip->reg_lock, flags);
349 if (chip->mode & SB_MODE_CAPTURE_16) {
350 count >>= 1;
351 count--;
352 snd_sbdsp_command(chip, SB_DSP4_IN16_AI);
353 snd_sbdsp_command(chip, format);
354 snd_sbdsp_command(chip, count & 0xff);
355 snd_sbdsp_command(chip, count >> 8);
356 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
357 } else {
358 count--;
359 snd_sbdsp_command(chip, SB_DSP4_IN8_AI);
360 snd_sbdsp_command(chip, format);
361 snd_sbdsp_command(chip, count & 0xff);
362 snd_sbdsp_command(chip, count >> 8);
363 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
364 }
365 spin_unlock_irqrestore(&chip->reg_lock, flags);
366 return 0;
367 }
368
369 static int snd_sb16_capture_trigger(struct snd_pcm_substream *substream,
370 int cmd)
371 {
372 struct snd_sb *chip = snd_pcm_substream_chip(substream);
373 int result = 0;
374
375 spin_lock(&chip->reg_lock);
376 switch (cmd) {
377 case SNDRV_PCM_TRIGGER_START:
378 case SNDRV_PCM_TRIGGER_RESUME:
379 chip->mode |= SB_RATE_LOCK_CAPTURE;
380 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
381 break;
382 case SNDRV_PCM_TRIGGER_STOP:
383 case SNDRV_PCM_TRIGGER_SUSPEND:
384 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
385 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
386 if (chip->mode & SB_RATE_LOCK_PLAYBACK)
387 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
388 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
389 break;
390 default:
391 result = -EINVAL;
392 }
393 spin_unlock(&chip->reg_lock);
394 return result;
395 }
396
397 irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id)
398 {
399 struct snd_sb *chip = dev_id;
400 unsigned char status;
401 int ok;
402
403 spin_lock(&chip->mixer_lock);
404 status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
405 spin_unlock(&chip->mixer_lock);
406 if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback)
407 chip->rmidi_callback(irq, chip->rmidi->private_data);
408 if (status & SB_IRQTYPE_8BIT) {
409 ok = 0;
410 if (chip->mode & SB_MODE_PLAYBACK_8) {
411 snd_pcm_period_elapsed(chip->playback_substream);
412 snd_sb16_csp_update(chip);
413 ok++;
414 }
415 if (chip->mode & SB_MODE_CAPTURE_8) {
416 snd_pcm_period_elapsed(chip->capture_substream);
417 ok++;
418 }
419 spin_lock(&chip->reg_lock);
420 if (!ok)
421 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
422 snd_sb_ack_8bit(chip);
423 spin_unlock(&chip->reg_lock);
424 }
425 if (status & SB_IRQTYPE_16BIT) {
426 ok = 0;
427 if (chip->mode & SB_MODE_PLAYBACK_16) {
428 snd_pcm_period_elapsed(chip->playback_substream);
429 snd_sb16_csp_update(chip);
430 ok++;
431 }
432 if (chip->mode & SB_MODE_CAPTURE_16) {
433 snd_pcm_period_elapsed(chip->capture_substream);
434 ok++;
435 }
436 spin_lock(&chip->reg_lock);
437 if (!ok)
438 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
439 snd_sb_ack_16bit(chip);
440 spin_unlock(&chip->reg_lock);
441 }
442 return IRQ_HANDLED;
443 }
444
445 /*
446
447 */
448
449 static snd_pcm_uframes_t snd_sb16_playback_pointer(struct snd_pcm_substream *substream)
450 {
451 struct snd_sb *chip = snd_pcm_substream_chip(substream);
452 unsigned int dma;
453 size_t ptr;
454
455 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
456 ptr = snd_dma_pointer(dma, chip->p_dma_size);
457 return bytes_to_frames(substream->runtime, ptr);
458 }
459
460 static snd_pcm_uframes_t snd_sb16_capture_pointer(struct snd_pcm_substream *substream)
461 {
462 struct snd_sb *chip = snd_pcm_substream_chip(substream);
463 unsigned int dma;
464 size_t ptr;
465
466 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
467 ptr = snd_dma_pointer(dma, chip->c_dma_size);
468 return bytes_to_frames(substream->runtime, ptr);
469 }
470
471 /*
472
473 */
474
475 static struct snd_pcm_hardware snd_sb16_playback =
476 {
477 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
478 SNDRV_PCM_INFO_MMAP_VALID),
479 .formats = 0,
480 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
481 .rate_min = 4000,
482 .rate_max = 44100,
483 .channels_min = 1,
484 .channels_max = 2,
485 .buffer_bytes_max = (128*1024),
486 .period_bytes_min = 64,
487 .period_bytes_max = (128*1024),
488 .periods_min = 1,
489 .periods_max = 1024,
490 .fifo_size = 0,
491 };
492
493 static struct snd_pcm_hardware snd_sb16_capture =
494 {
495 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
496 SNDRV_PCM_INFO_MMAP_VALID),
497 .formats = 0,
498 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
499 .rate_min = 4000,
500 .rate_max = 44100,
501 .channels_min = 1,
502 .channels_max = 2,
503 .buffer_bytes_max = (128*1024),
504 .period_bytes_min = 64,
505 .period_bytes_max = (128*1024),
506 .periods_min = 1,
507 .periods_max = 1024,
508 .fifo_size = 0,
509 };
510
511 /*
512 * open/close
513 */
514
515 static int snd_sb16_playback_open(struct snd_pcm_substream *substream)
516 {
517 unsigned long flags;
518 struct snd_sb *chip = snd_pcm_substream_chip(substream);
519 struct snd_pcm_runtime *runtime = substream->runtime;
520
521 spin_lock_irqsave(&chip->open_lock, flags);
522 if (chip->mode & SB_MODE_PLAYBACK) {
523 spin_unlock_irqrestore(&chip->open_lock, flags);
524 return -EAGAIN;
525 }
526 runtime->hw = snd_sb16_playback;
527
528 /* skip if 16 bit DMA was reserved for capture */
529 if (chip->force_mode16 & SB_MODE_CAPTURE_16)
530 goto __skip_16bit;
531
532 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) {
533 chip->mode |= SB_MODE_PLAYBACK_16;
534 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
535 /* Vibra16X hack */
536 if (chip->dma16 <= 3) {
537 runtime->hw.buffer_bytes_max =
538 runtime->hw.period_bytes_max = 64 * 1024;
539 } else {
540 snd_sb16_csp_playback_open(chip, runtime);
541 }
542 goto __open_ok;
543 }
544
545 __skip_16bit:
546 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) {
547 chip->mode |= SB_MODE_PLAYBACK_8;
548 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
549 if (chip->dma16 < 0) {
550 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
551 chip->mode |= SB_MODE_PLAYBACK_16;
552 } else {
553 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
554 }
555 runtime->hw.buffer_bytes_max =
556 runtime->hw.period_bytes_max = 64 * 1024;
557 goto __open_ok;
558 }
559 spin_unlock_irqrestore(&chip->open_lock, flags);
560 return -EAGAIN;
561
562 __open_ok:
563 if (chip->hardware == SB_HW_ALS100)
564 runtime->hw.rate_max = 48000;
565 if (chip->hardware == SB_HW_CS5530) {
566 runtime->hw.buffer_bytes_max = 32 * 1024;
567 runtime->hw.periods_min = 2;
568 runtime->hw.rate_min = 44100;
569 }
570 if (chip->mode & SB_RATE_LOCK)
571 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
572 chip->playback_substream = substream;
573 spin_unlock_irqrestore(&chip->open_lock, flags);
574 return 0;
575 }
576
577 static int snd_sb16_playback_close(struct snd_pcm_substream *substream)
578 {
579 unsigned long flags;
580 struct snd_sb *chip = snd_pcm_substream_chip(substream);
581
582 snd_sb16_csp_playback_close(chip);
583 spin_lock_irqsave(&chip->open_lock, flags);
584 chip->playback_substream = NULL;
585 chip->mode &= ~SB_MODE_PLAYBACK;
586 spin_unlock_irqrestore(&chip->open_lock, flags);
587 return 0;
588 }
589
590 static int snd_sb16_capture_open(struct snd_pcm_substream *substream)
591 {
592 unsigned long flags;
593 struct snd_sb *chip = snd_pcm_substream_chip(substream);
594 struct snd_pcm_runtime *runtime = substream->runtime;
595
596 spin_lock_irqsave(&chip->open_lock, flags);
597 if (chip->mode & SB_MODE_CAPTURE) {
598 spin_unlock_irqrestore(&chip->open_lock, flags);
599 return -EAGAIN;
600 }
601 runtime->hw = snd_sb16_capture;
602
603 /* skip if 16 bit DMA was reserved for playback */
604 if (chip->force_mode16 & SB_MODE_PLAYBACK_16)
605 goto __skip_16bit;
606
607 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) {
608 chip->mode |= SB_MODE_CAPTURE_16;
609 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
610 /* Vibra16X hack */
611 if (chip->dma16 <= 3) {
612 runtime->hw.buffer_bytes_max =
613 runtime->hw.period_bytes_max = 64 * 1024;
614 } else {
615 snd_sb16_csp_capture_open(chip, runtime);
616 }
617 goto __open_ok;
618 }
619
620 __skip_16bit:
621 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) {
622 chip->mode |= SB_MODE_CAPTURE_8;
623 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
624 if (chip->dma16 < 0) {
625 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
626 chip->mode |= SB_MODE_CAPTURE_16;
627 } else {
628 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
629 }
630 runtime->hw.buffer_bytes_max =
631 runtime->hw.period_bytes_max = 64 * 1024;
632 goto __open_ok;
633 }
634 spin_unlock_irqrestore(&chip->open_lock, flags);
635 return -EAGAIN;
636
637 __open_ok:
638 if (chip->hardware == SB_HW_ALS100)
639 runtime->hw.rate_max = 48000;
640 if (chip->hardware == SB_HW_CS5530) {
641 runtime->hw.buffer_bytes_max = 32 * 1024;
642 runtime->hw.periods_min = 2;
643 runtime->hw.rate_min = 44100;
644 }
645 if (chip->mode & SB_RATE_LOCK)
646 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
647 chip->capture_substream = substream;
648 spin_unlock_irqrestore(&chip->open_lock, flags);
649 return 0;
650 }
651
652 static int snd_sb16_capture_close(struct snd_pcm_substream *substream)
653 {
654 unsigned long flags;
655 struct snd_sb *chip = snd_pcm_substream_chip(substream);
656
657 snd_sb16_csp_capture_close(chip);
658 spin_lock_irqsave(&chip->open_lock, flags);
659 chip->capture_substream = NULL;
660 chip->mode &= ~SB_MODE_CAPTURE;
661 spin_unlock_irqrestore(&chip->open_lock, flags);
662 return 0;
663 }
664
665 /*
666 * DMA control interface
667 */
668
669 static int snd_sb16_set_dma_mode(struct snd_sb *chip, int what)
670 {
671 if (chip->dma8 < 0 || chip->dma16 < 0) {
672 snd_assert(what == 0, return -EINVAL);
673 return 0;
674 }
675 if (what == 0) {
676 chip->force_mode16 = 0;
677 } else if (what == 1) {
678 chip->force_mode16 = SB_MODE_PLAYBACK_16;
679 } else if (what == 2) {
680 chip->force_mode16 = SB_MODE_CAPTURE_16;
681 } else {
682 return -EINVAL;
683 }
684 return 0;
685 }
686
687 static int snd_sb16_get_dma_mode(struct snd_sb *chip)
688 {
689 if (chip->dma8 < 0 || chip->dma16 < 0)
690 return 0;
691 switch (chip->force_mode16) {
692 case SB_MODE_PLAYBACK_16:
693 return 1;
694 case SB_MODE_CAPTURE_16:
695 return 2;
696 default:
697 return 0;
698 }
699 }
700
701 static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
702 {
703 static char *texts[3] = {
704 "Auto", "Playback", "Capture"
705 };
706
707 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
708 uinfo->count = 1;
709 uinfo->value.enumerated.items = 3;
710 if (uinfo->value.enumerated.item > 2)
711 uinfo->value.enumerated.item = 2;
712 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
713 return 0;
714 }
715
716 static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
717 {
718 struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
719 unsigned long flags;
720
721 spin_lock_irqsave(&chip->reg_lock, flags);
722 ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip);
723 spin_unlock_irqrestore(&chip->reg_lock, flags);
724 return 0;
725 }
726
727 static int snd_sb16_dma_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
728 {
729 struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
730 unsigned long flags;
731 unsigned char nval, oval;
732 int change;
733
734 if ((nval = ucontrol->value.enumerated.item[0]) > 2)
735 return -EINVAL;
736 spin_lock_irqsave(&chip->reg_lock, flags);
737 oval = snd_sb16_get_dma_mode(chip);
738 change = nval != oval;
739 snd_sb16_set_dma_mode(chip, nval);
740 spin_unlock_irqrestore(&chip->reg_lock, flags);
741 return change;
742 }
743
744 static struct snd_kcontrol_new snd_sb16_dma_control = {
745 .iface = SNDRV_CTL_ELEM_IFACE_CARD,
746 .name = "16-bit DMA Allocation",
747 .info = snd_sb16_dma_control_info,
748 .get = snd_sb16_dma_control_get,
749 .put = snd_sb16_dma_control_put
750 };
751
752 /*
753 * Initialization part
754 */
755
756 int snd_sb16dsp_configure(struct snd_sb * chip)
757 {
758 unsigned long flags;
759 unsigned char irqreg = 0, dmareg = 0, mpureg;
760 unsigned char realirq, realdma, realmpureg;
761 /* note: mpu register should be present only on SB16 Vibra soundcards */
762
763 // printk(KERN_DEBUG "codec->irq=%i, codec->dma8=%i, codec->dma16=%i\n", chip->irq, chip->dma8, chip->dma16);
764 spin_lock_irqsave(&chip->mixer_lock, flags);
765 mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06;
766 spin_unlock_irqrestore(&chip->mixer_lock, flags);
767 switch (chip->irq) {
768 case 2:
769 case 9:
770 irqreg |= SB_IRQSETUP_IRQ9;
771 break;
772 case 5:
773 irqreg |= SB_IRQSETUP_IRQ5;
774 break;
775 case 7:
776 irqreg |= SB_IRQSETUP_IRQ7;
777 break;
778 case 10:
779 irqreg |= SB_IRQSETUP_IRQ10;
780 break;
781 default:
782 return -EINVAL;
783 }
784 if (chip->dma8 >= 0) {
785 switch (chip->dma8) {
786 case 0:
787 dmareg |= SB_DMASETUP_DMA0;
788 break;
789 case 1:
790 dmareg |= SB_DMASETUP_DMA1;
791 break;
792 case 3:
793 dmareg |= SB_DMASETUP_DMA3;
794 break;
795 default:
796 return -EINVAL;
797 }
798 }
799 if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
800 switch (chip->dma16) {
801 case 5:
802 dmareg |= SB_DMASETUP_DMA5;
803 break;
804 case 6:
805 dmareg |= SB_DMASETUP_DMA6;
806 break;
807 case 7:
808 dmareg |= SB_DMASETUP_DMA7;
809 break;
810 default:
811 return -EINVAL;
812 }
813 }
814 switch (chip->mpu_port) {
815 case 0x300:
816 mpureg |= 0x04;
817 break;
818 case 0x330:
819 mpureg |= 0x00;
820 break;
821 default:
822 mpureg |= 0x02; /* disable MPU */
823 }
824 spin_lock_irqsave(&chip->mixer_lock, flags);
825
826 snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg);
827 realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP);
828
829 snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg);
830 realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP);
831
832 snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg);
833 realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP);
834
835 spin_unlock_irqrestore(&chip->mixer_lock, flags);
836 if ((~realirq) & irqreg || (~realdma) & dmareg) {
837 snd_printk(KERN_ERR "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n", chip->port);
838 snd_printk(KERN_ERR "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, realirq, realdma, realmpureg);
839 snd_printk(KERN_ERR "SB16 [0x%lx]: got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, irqreg, dmareg, mpureg);
840 return -ENODEV;
841 }
842 return 0;
843 }
844
845 static struct snd_pcm_ops snd_sb16_playback_ops = {
846 .open = snd_sb16_playback_open,
847 .close = snd_sb16_playback_close,
848 .ioctl = snd_pcm_lib_ioctl,
849 .hw_params = snd_sb16_hw_params,
850 .hw_free = snd_sb16_hw_free,
851 .prepare = snd_sb16_playback_prepare,
852 .trigger = snd_sb16_playback_trigger,
853 .pointer = snd_sb16_playback_pointer,
854 };
855
856 static struct snd_pcm_ops snd_sb16_capture_ops = {
857 .open = snd_sb16_capture_open,
858 .close = snd_sb16_capture_close,
859 .ioctl = snd_pcm_lib_ioctl,
860 .hw_params = snd_sb16_hw_params,
861 .hw_free = snd_sb16_hw_free,
862 .prepare = snd_sb16_capture_prepare,
863 .trigger = snd_sb16_capture_trigger,
864 .pointer = snd_sb16_capture_pointer,
865 };
866
867 int snd_sb16dsp_pcm(struct snd_sb * chip, int device, struct snd_pcm ** rpcm)
868 {
869 struct snd_card *card = chip->card;
870 struct snd_pcm *pcm;
871 int err;
872
873 if (rpcm)
874 *rpcm = NULL;
875 if ((err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm)) < 0)
876 return err;
877 sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff);
878 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
879 pcm->private_data = chip;
880
881 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops);
882 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops);
883
884 if (chip->dma16 >= 0 && chip->dma8 != chip->dma16)
885 snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip));
886 else
887 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
888
889 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
890 snd_dma_isa_data(),
891 64*1024, 128*1024);
892
893 if (rpcm)
894 *rpcm = pcm;
895 return 0;
896 }
897
898 const struct snd_pcm_ops *snd_sb16dsp_get_pcm_ops(int direction)
899 {
900 return direction == SNDRV_PCM_STREAM_PLAYBACK ?
901 &snd_sb16_playback_ops : &snd_sb16_capture_ops;
902 }
903
904 EXPORT_SYMBOL(snd_sb16dsp_pcm);
905 EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops);
906 EXPORT_SYMBOL(snd_sb16dsp_configure);
907 EXPORT_SYMBOL(snd_sb16dsp_interrupt);
908
909 /*
910 * INIT part
911 */
912
913 static int __init alsa_sb16_init(void)
914 {
915 return 0;
916 }
917
918 static void __exit alsa_sb16_exit(void)
919 {
920 }
921
922 module_init(alsa_sb16_init)
923 module_exit(alsa_sb16_exit)
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