1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 * Routines for control of 16-bit SoundBlaster cards and clones
5 * Note: This is very ugly hardware which uses one 8-bit DMA channel and
6 * second 16-bit DMA channel. Unfortunately 8-bit DMA channel can't
7 * transfer 16-bit samples and 16-bit DMA channels can't transfer
8 * 8-bit samples. This make full duplex more complicated than
9 * can be... People, don't buy these soundcards for full 16-bit
10 * duplex!!!
11 * Note: 16-bit wide is assigned to first direction which made request.
12 * With full duplex - playback is preferred with abstract layer.
13 *
14 * Note: Some chip revisions have hardware bug. Changing capture
15 * channel from full-duplex 8bit DMA to 16bit DMA will block
16 * 16bit DMA transfers from DSP chip (capture) until 8bit transfer
17 * to DSP chip (playback) starts. This bug can be avoided with
18 * "16bit DMA Allocation" setting set to Playback or Capture.
19 */
20
21 #include <linux/io.h>
22 #include <asm/dma.h>
23 #include <linux/init.h>
24 #include <linux/time.h>
25 #include <linux/module.h>
26 #include <sound/core.h>
27 #include <sound/sb.h>
28 #include <sound/sb16_csp.h>
29 #include <sound/mpu401.h>
30 #include <sound/control.h>
31 #include <sound/info.h>
32
33 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
34 MODULE_DESCRIPTION("Routines for control of 16-bit SoundBlaster cards and clones");
35 MODULE_LICENSE("GPL");
36
37 #define runtime_format_bits(runtime) \
38 ((unsigned int)pcm_format_to_bits((runtime)->format))
39
40 #ifdef CONFIG_SND_SB16_CSP
snd_sb16_csp_playback_prepare(struct snd_sb * chip,struct snd_pcm_runtime * runtime)41 static void snd_sb16_csp_playback_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
42 {
43 if (chip->hardware == SB_HW_16CSP) {
44 struct snd_sb_csp *csp = chip->csp;
45
46 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
47 /* manually loaded codec */
48 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) &&
49 (runtime_format_bits(runtime) == csp->acc_format)) {
50 /* Supported runtime PCM format for playback */
51 if (csp->ops.csp_use(csp) == 0) {
52 /* If CSP was successfully acquired */
53 goto __start_CSP;
54 }
55 } else if ((csp->mode & SNDRV_SB_CSP_MODE_QSOUND) && (csp->q_enabled)) {
56 /* QSound decoder is loaded and enabled */
57 if (runtime_format_bits(runtime) & (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
58 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE)) {
59 /* Only for simple PCM formats */
60 if (csp->ops.csp_use(csp) == 0) {
61 /* If CSP was successfully acquired */
62 goto __start_CSP;
63 }
64 }
65 }
66 } else if (csp->ops.csp_use(csp) == 0) {
67 /* Acquire CSP and try to autoload hardware codec */
68 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_WRITE)) {
69 /* Unsupported format, release CSP */
70 csp->ops.csp_unuse(csp);
71 } else {
72 __start_CSP:
73 /* Try to start CSP */
74 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_PLAYBACK_16) ?
75 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
76 (runtime->channels > 1) ?
77 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
78 /* Failed, release CSP */
79 csp->ops.csp_unuse(csp);
80 } else {
81 /* Success, CSP acquired and running */
82 chip->open = SNDRV_SB_CSP_MODE_DSP_WRITE;
83 }
84 }
85 }
86 }
87 }
88
snd_sb16_csp_capture_prepare(struct snd_sb * chip,struct snd_pcm_runtime * runtime)89 static void snd_sb16_csp_capture_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
90 {
91 if (chip->hardware == SB_HW_16CSP) {
92 struct snd_sb_csp *csp = chip->csp;
93
94 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
95 /* manually loaded codec */
96 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) &&
97 (runtime_format_bits(runtime) == csp->acc_format)) {
98 /* Supported runtime PCM format for capture */
99 if (csp->ops.csp_use(csp) == 0) {
100 /* If CSP was successfully acquired */
101 goto __start_CSP;
102 }
103 }
104 } else if (csp->ops.csp_use(csp) == 0) {
105 /* Acquire CSP and try to autoload hardware codec */
106 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_READ)) {
107 /* Unsupported format, release CSP */
108 csp->ops.csp_unuse(csp);
109 } else {
110 __start_CSP:
111 /* Try to start CSP */
112 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_CAPTURE_16) ?
113 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
114 (runtime->channels > 1) ?
115 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
116 /* Failed, release CSP */
117 csp->ops.csp_unuse(csp);
118 } else {
119 /* Success, CSP acquired and running */
120 chip->open = SNDRV_SB_CSP_MODE_DSP_READ;
121 }
122 }
123 }
124 }
125 }
126
snd_sb16_csp_update(struct snd_sb * chip)127 static void snd_sb16_csp_update(struct snd_sb *chip)
128 {
129 if (chip->hardware == SB_HW_16CSP) {
130 struct snd_sb_csp *csp = chip->csp;
131
132 if (csp->qpos_changed) {
133 spin_lock(&chip->reg_lock);
134 csp->ops.csp_qsound_transfer (csp);
135 spin_unlock(&chip->reg_lock);
136 }
137 }
138 }
139
snd_sb16_csp_playback_open(struct snd_sb * chip,struct snd_pcm_runtime * runtime)140 static void snd_sb16_csp_playback_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
141 {
142 /* CSP decoders (QSound excluded) support only 16bit transfers */
143 if (chip->hardware == SB_HW_16CSP) {
144 struct snd_sb_csp *csp = chip->csp;
145
146 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
147 /* manually loaded codec */
148 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) {
149 runtime->hw.formats |= csp->acc_format;
150 }
151 } else {
152 /* autoloaded codecs */
153 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
154 SNDRV_PCM_FMTBIT_IMA_ADPCM;
155 }
156 }
157 }
158
snd_sb16_csp_playback_close(struct snd_sb * chip)159 static void snd_sb16_csp_playback_close(struct snd_sb *chip)
160 {
161 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) {
162 struct snd_sb_csp *csp = chip->csp;
163
164 if (csp->ops.csp_stop(csp) == 0) {
165 csp->ops.csp_unuse(csp);
166 chip->open = 0;
167 }
168 }
169 }
170
snd_sb16_csp_capture_open(struct snd_sb * chip,struct snd_pcm_runtime * runtime)171 static void snd_sb16_csp_capture_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
172 {
173 /* CSP coders support only 16bit transfers */
174 if (chip->hardware == SB_HW_16CSP) {
175 struct snd_sb_csp *csp = chip->csp;
176
177 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
178 /* manually loaded codec */
179 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) {
180 runtime->hw.formats |= csp->acc_format;
181 }
182 } else {
183 /* autoloaded codecs */
184 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
185 SNDRV_PCM_FMTBIT_IMA_ADPCM;
186 }
187 }
188 }
189
snd_sb16_csp_capture_close(struct snd_sb * chip)190 static void snd_sb16_csp_capture_close(struct snd_sb *chip)
191 {
192 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) {
193 struct snd_sb_csp *csp = chip->csp;
194
195 if (csp->ops.csp_stop(csp) == 0) {
196 csp->ops.csp_unuse(csp);
197 chip->open = 0;
198 }
199 }
200 }
201 #else
202 #define snd_sb16_csp_playback_prepare(chip, runtime) /*nop*/
203 #define snd_sb16_csp_capture_prepare(chip, runtime) /*nop*/
204 #define snd_sb16_csp_update(chip) /*nop*/
205 #define snd_sb16_csp_playback_open(chip, runtime) /*nop*/
206 #define snd_sb16_csp_playback_close(chip) /*nop*/
207 #define snd_sb16_csp_capture_open(chip, runtime) /*nop*/
208 #define snd_sb16_csp_capture_close(chip) /*nop*/
209 #endif
210
211
snd_sb16_setup_rate(struct snd_sb * chip,unsigned short rate,int channel)212 static void snd_sb16_setup_rate(struct snd_sb *chip,
213 unsigned short rate,
214 int channel)
215 {
216 unsigned long flags;
217
218 spin_lock_irqsave(&chip->reg_lock, flags);
219 if (chip->mode & (channel == SNDRV_PCM_STREAM_PLAYBACK ? SB_MODE_PLAYBACK_16 : SB_MODE_CAPTURE_16))
220 snd_sb_ack_16bit(chip);
221 else
222 snd_sb_ack_8bit(chip);
223 if (!(chip->mode & SB_RATE_LOCK)) {
224 chip->locked_rate = rate;
225 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_IN);
226 snd_sbdsp_command(chip, rate >> 8);
227 snd_sbdsp_command(chip, rate & 0xff);
228 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
229 snd_sbdsp_command(chip, rate >> 8);
230 snd_sbdsp_command(chip, rate & 0xff);
231 }
232 spin_unlock_irqrestore(&chip->reg_lock, flags);
233 }
234
snd_sb16_playback_prepare(struct snd_pcm_substream * substream)235 static int snd_sb16_playback_prepare(struct snd_pcm_substream *substream)
236 {
237 unsigned long flags;
238 struct snd_sb *chip = snd_pcm_substream_chip(substream);
239 struct snd_pcm_runtime *runtime = substream->runtime;
240 unsigned char format;
241 unsigned int size, count, dma;
242
243 snd_sb16_csp_playback_prepare(chip, runtime);
244 if (snd_pcm_format_unsigned(runtime->format) > 0) {
245 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
246 } else {
247 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
248 }
249
250 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_PLAYBACK);
251 size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream);
252 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
253 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
254
255 count = snd_pcm_lib_period_bytes(substream);
256 spin_lock_irqsave(&chip->reg_lock, flags);
257 if (chip->mode & SB_MODE_PLAYBACK_16) {
258 count >>= 1;
259 count--;
260 snd_sbdsp_command(chip, SB_DSP4_OUT16_AI);
261 snd_sbdsp_command(chip, format);
262 snd_sbdsp_command(chip, count & 0xff);
263 snd_sbdsp_command(chip, count >> 8);
264 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
265 } else {
266 count--;
267 snd_sbdsp_command(chip, SB_DSP4_OUT8_AI);
268 snd_sbdsp_command(chip, format);
269 snd_sbdsp_command(chip, count & 0xff);
270 snd_sbdsp_command(chip, count >> 8);
271 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
272 }
273 spin_unlock_irqrestore(&chip->reg_lock, flags);
274 return 0;
275 }
276
snd_sb16_playback_trigger(struct snd_pcm_substream * substream,int cmd)277 static int snd_sb16_playback_trigger(struct snd_pcm_substream *substream,
278 int cmd)
279 {
280 struct snd_sb *chip = snd_pcm_substream_chip(substream);
281 int result = 0;
282
283 spin_lock(&chip->reg_lock);
284 switch (cmd) {
285 case SNDRV_PCM_TRIGGER_START:
286 case SNDRV_PCM_TRIGGER_RESUME:
287 chip->mode |= SB_RATE_LOCK_PLAYBACK;
288 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
289 break;
290 case SNDRV_PCM_TRIGGER_STOP:
291 case SNDRV_PCM_TRIGGER_SUSPEND:
292 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
293 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
294 if (chip->mode & SB_RATE_LOCK_CAPTURE)
295 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
296 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
297 break;
298 default:
299 result = -EINVAL;
300 }
301 spin_unlock(&chip->reg_lock);
302 return result;
303 }
304
snd_sb16_capture_prepare(struct snd_pcm_substream * substream)305 static int snd_sb16_capture_prepare(struct snd_pcm_substream *substream)
306 {
307 unsigned long flags;
308 struct snd_sb *chip = snd_pcm_substream_chip(substream);
309 struct snd_pcm_runtime *runtime = substream->runtime;
310 unsigned char format;
311 unsigned int size, count, dma;
312
313 snd_sb16_csp_capture_prepare(chip, runtime);
314 if (snd_pcm_format_unsigned(runtime->format) > 0) {
315 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
316 } else {
317 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
318 }
319 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE);
320 size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
321 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
322 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
323
324 count = snd_pcm_lib_period_bytes(substream);
325 spin_lock_irqsave(&chip->reg_lock, flags);
326 if (chip->mode & SB_MODE_CAPTURE_16) {
327 count >>= 1;
328 count--;
329 snd_sbdsp_command(chip, SB_DSP4_IN16_AI);
330 snd_sbdsp_command(chip, format);
331 snd_sbdsp_command(chip, count & 0xff);
332 snd_sbdsp_command(chip, count >> 8);
333 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
334 } else {
335 count--;
336 snd_sbdsp_command(chip, SB_DSP4_IN8_AI);
337 snd_sbdsp_command(chip, format);
338 snd_sbdsp_command(chip, count & 0xff);
339 snd_sbdsp_command(chip, count >> 8);
340 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
341 }
342 spin_unlock_irqrestore(&chip->reg_lock, flags);
343 return 0;
344 }
345
snd_sb16_capture_trigger(struct snd_pcm_substream * substream,int cmd)346 static int snd_sb16_capture_trigger(struct snd_pcm_substream *substream,
347 int cmd)
348 {
349 struct snd_sb *chip = snd_pcm_substream_chip(substream);
350 int result = 0;
351
352 spin_lock(&chip->reg_lock);
353 switch (cmd) {
354 case SNDRV_PCM_TRIGGER_START:
355 case SNDRV_PCM_TRIGGER_RESUME:
356 chip->mode |= SB_RATE_LOCK_CAPTURE;
357 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
358 break;
359 case SNDRV_PCM_TRIGGER_STOP:
360 case SNDRV_PCM_TRIGGER_SUSPEND:
361 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
362 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
363 if (chip->mode & SB_RATE_LOCK_PLAYBACK)
364 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
365 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
366 break;
367 default:
368 result = -EINVAL;
369 }
370 spin_unlock(&chip->reg_lock);
371 return result;
372 }
373
snd_sb16dsp_interrupt(int irq,void * dev_id)374 irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id)
375 {
376 struct snd_sb *chip = dev_id;
377 unsigned char status;
378 int ok;
379
380 spin_lock(&chip->mixer_lock);
381 status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
382 spin_unlock(&chip->mixer_lock);
383 if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback)
384 chip->rmidi_callback(irq, chip->rmidi->private_data);
385 if (status & SB_IRQTYPE_8BIT) {
386 ok = 0;
387 if (chip->mode & SB_MODE_PLAYBACK_8) {
388 snd_pcm_period_elapsed(chip->playback_substream);
389 snd_sb16_csp_update(chip);
390 ok++;
391 }
392 if (chip->mode & SB_MODE_CAPTURE_8) {
393 snd_pcm_period_elapsed(chip->capture_substream);
394 ok++;
395 }
396 spin_lock(&chip->reg_lock);
397 if (!ok)
398 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
399 snd_sb_ack_8bit(chip);
400 spin_unlock(&chip->reg_lock);
401 }
402 if (status & SB_IRQTYPE_16BIT) {
403 ok = 0;
404 if (chip->mode & SB_MODE_PLAYBACK_16) {
405 snd_pcm_period_elapsed(chip->playback_substream);
406 snd_sb16_csp_update(chip);
407 ok++;
408 }
409 if (chip->mode & SB_MODE_CAPTURE_16) {
410 snd_pcm_period_elapsed(chip->capture_substream);
411 ok++;
412 }
413 spin_lock(&chip->reg_lock);
414 if (!ok)
415 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
416 snd_sb_ack_16bit(chip);
417 spin_unlock(&chip->reg_lock);
418 }
419 return IRQ_HANDLED;
420 }
421
422 /*
423
424 */
425
snd_sb16_playback_pointer(struct snd_pcm_substream * substream)426 static snd_pcm_uframes_t snd_sb16_playback_pointer(struct snd_pcm_substream *substream)
427 {
428 struct snd_sb *chip = snd_pcm_substream_chip(substream);
429 unsigned int dma;
430 size_t ptr;
431
432 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
433 ptr = snd_dma_pointer(dma, chip->p_dma_size);
434 return bytes_to_frames(substream->runtime, ptr);
435 }
436
snd_sb16_capture_pointer(struct snd_pcm_substream * substream)437 static snd_pcm_uframes_t snd_sb16_capture_pointer(struct snd_pcm_substream *substream)
438 {
439 struct snd_sb *chip = snd_pcm_substream_chip(substream);
440 unsigned int dma;
441 size_t ptr;
442
443 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
444 ptr = snd_dma_pointer(dma, chip->c_dma_size);
445 return bytes_to_frames(substream->runtime, ptr);
446 }
447
448 /*
449
450 */
451
452 static const struct snd_pcm_hardware snd_sb16_playback =
453 {
454 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
455 SNDRV_PCM_INFO_MMAP_VALID),
456 .formats = 0,
457 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
458 .rate_min = 4000,
459 .rate_max = 44100,
460 .channels_min = 1,
461 .channels_max = 2,
462 .buffer_bytes_max = (128*1024),
463 .period_bytes_min = 64,
464 .period_bytes_max = (128*1024),
465 .periods_min = 1,
466 .periods_max = 1024,
467 .fifo_size = 0,
468 };
469
470 static const struct snd_pcm_hardware snd_sb16_capture =
471 {
472 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
473 SNDRV_PCM_INFO_MMAP_VALID),
474 .formats = 0,
475 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
476 .rate_min = 4000,
477 .rate_max = 44100,
478 .channels_min = 1,
479 .channels_max = 2,
480 .buffer_bytes_max = (128*1024),
481 .period_bytes_min = 64,
482 .period_bytes_max = (128*1024),
483 .periods_min = 1,
484 .periods_max = 1024,
485 .fifo_size = 0,
486 };
487
488 /*
489 * open/close
490 */
491
snd_sb16_playback_open(struct snd_pcm_substream * substream)492 static int snd_sb16_playback_open(struct snd_pcm_substream *substream)
493 {
494 unsigned long flags;
495 struct snd_sb *chip = snd_pcm_substream_chip(substream);
496 struct snd_pcm_runtime *runtime = substream->runtime;
497
498 spin_lock_irqsave(&chip->open_lock, flags);
499 if (chip->mode & SB_MODE_PLAYBACK) {
500 spin_unlock_irqrestore(&chip->open_lock, flags);
501 return -EAGAIN;
502 }
503 runtime->hw = snd_sb16_playback;
504
505 /* skip if 16 bit DMA was reserved for capture */
506 if (chip->force_mode16 & SB_MODE_CAPTURE_16)
507 goto __skip_16bit;
508
509 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) {
510 chip->mode |= SB_MODE_PLAYBACK_16;
511 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
512 /* Vibra16X hack */
513 if (chip->dma16 <= 3) {
514 runtime->hw.buffer_bytes_max =
515 runtime->hw.period_bytes_max = 64 * 1024;
516 } else {
517 snd_sb16_csp_playback_open(chip, runtime);
518 }
519 goto __open_ok;
520 }
521
522 __skip_16bit:
523 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) {
524 chip->mode |= SB_MODE_PLAYBACK_8;
525 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
526 if (chip->dma16 < 0) {
527 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
528 chip->mode |= SB_MODE_PLAYBACK_16;
529 } else {
530 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
531 }
532 runtime->hw.buffer_bytes_max =
533 runtime->hw.period_bytes_max = 64 * 1024;
534 goto __open_ok;
535 }
536 spin_unlock_irqrestore(&chip->open_lock, flags);
537 return -EAGAIN;
538
539 __open_ok:
540 if (chip->hardware == SB_HW_ALS100)
541 runtime->hw.rate_max = 48000;
542 if (chip->hardware == SB_HW_CS5530) {
543 runtime->hw.buffer_bytes_max = 32 * 1024;
544 runtime->hw.periods_min = 2;
545 runtime->hw.rate_min = 44100;
546 }
547 if (chip->mode & SB_RATE_LOCK)
548 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
549 chip->playback_substream = substream;
550 spin_unlock_irqrestore(&chip->open_lock, flags);
551 return 0;
552 }
553
snd_sb16_playback_close(struct snd_pcm_substream * substream)554 static int snd_sb16_playback_close(struct snd_pcm_substream *substream)
555 {
556 unsigned long flags;
557 struct snd_sb *chip = snd_pcm_substream_chip(substream);
558
559 snd_sb16_csp_playback_close(chip);
560 spin_lock_irqsave(&chip->open_lock, flags);
561 chip->playback_substream = NULL;
562 chip->mode &= ~SB_MODE_PLAYBACK;
563 spin_unlock_irqrestore(&chip->open_lock, flags);
564 return 0;
565 }
566
snd_sb16_capture_open(struct snd_pcm_substream * substream)567 static int snd_sb16_capture_open(struct snd_pcm_substream *substream)
568 {
569 unsigned long flags;
570 struct snd_sb *chip = snd_pcm_substream_chip(substream);
571 struct snd_pcm_runtime *runtime = substream->runtime;
572
573 spin_lock_irqsave(&chip->open_lock, flags);
574 if (chip->mode & SB_MODE_CAPTURE) {
575 spin_unlock_irqrestore(&chip->open_lock, flags);
576 return -EAGAIN;
577 }
578 runtime->hw = snd_sb16_capture;
579
580 /* skip if 16 bit DMA was reserved for playback */
581 if (chip->force_mode16 & SB_MODE_PLAYBACK_16)
582 goto __skip_16bit;
583
584 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) {
585 chip->mode |= SB_MODE_CAPTURE_16;
586 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
587 /* Vibra16X hack */
588 if (chip->dma16 <= 3) {
589 runtime->hw.buffer_bytes_max =
590 runtime->hw.period_bytes_max = 64 * 1024;
591 } else {
592 snd_sb16_csp_capture_open(chip, runtime);
593 }
594 goto __open_ok;
595 }
596
597 __skip_16bit:
598 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) {
599 chip->mode |= SB_MODE_CAPTURE_8;
600 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
601 if (chip->dma16 < 0) {
602 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
603 chip->mode |= SB_MODE_CAPTURE_16;
604 } else {
605 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
606 }
607 runtime->hw.buffer_bytes_max =
608 runtime->hw.period_bytes_max = 64 * 1024;
609 goto __open_ok;
610 }
611 spin_unlock_irqrestore(&chip->open_lock, flags);
612 return -EAGAIN;
613
614 __open_ok:
615 if (chip->hardware == SB_HW_ALS100)
616 runtime->hw.rate_max = 48000;
617 if (chip->hardware == SB_HW_CS5530) {
618 runtime->hw.buffer_bytes_max = 32 * 1024;
619 runtime->hw.periods_min = 2;
620 runtime->hw.rate_min = 44100;
621 }
622 if (chip->mode & SB_RATE_LOCK)
623 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
624 chip->capture_substream = substream;
625 spin_unlock_irqrestore(&chip->open_lock, flags);
626 return 0;
627 }
628
snd_sb16_capture_close(struct snd_pcm_substream * substream)629 static int snd_sb16_capture_close(struct snd_pcm_substream *substream)
630 {
631 unsigned long flags;
632 struct snd_sb *chip = snd_pcm_substream_chip(substream);
633
634 snd_sb16_csp_capture_close(chip);
635 spin_lock_irqsave(&chip->open_lock, flags);
636 chip->capture_substream = NULL;
637 chip->mode &= ~SB_MODE_CAPTURE;
638 spin_unlock_irqrestore(&chip->open_lock, flags);
639 return 0;
640 }
641
642 /*
643 * DMA control interface
644 */
645
snd_sb16_set_dma_mode(struct snd_sb * chip,int what)646 static int snd_sb16_set_dma_mode(struct snd_sb *chip, int what)
647 {
648 if (chip->dma8 < 0 || chip->dma16 < 0) {
649 if (snd_BUG_ON(what))
650 return -EINVAL;
651 return 0;
652 }
653 if (what == 0) {
654 chip->force_mode16 = 0;
655 } else if (what == 1) {
656 chip->force_mode16 = SB_MODE_PLAYBACK_16;
657 } else if (what == 2) {
658 chip->force_mode16 = SB_MODE_CAPTURE_16;
659 } else {
660 return -EINVAL;
661 }
662 return 0;
663 }
664
snd_sb16_get_dma_mode(struct snd_sb * chip)665 static int snd_sb16_get_dma_mode(struct snd_sb *chip)
666 {
667 if (chip->dma8 < 0 || chip->dma16 < 0)
668 return 0;
669 switch (chip->force_mode16) {
670 case SB_MODE_PLAYBACK_16:
671 return 1;
672 case SB_MODE_CAPTURE_16:
673 return 2;
674 default:
675 return 0;
676 }
677 }
678
snd_sb16_dma_control_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)679 static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
680 {
681 static const char * const texts[3] = {
682 "Auto", "Playback", "Capture"
683 };
684
685 return snd_ctl_enum_info(uinfo, 1, 3, texts);
686 }
687
snd_sb16_dma_control_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)688 static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
689 {
690 struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
691 unsigned long flags;
692
693 spin_lock_irqsave(&chip->reg_lock, flags);
694 ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip);
695 spin_unlock_irqrestore(&chip->reg_lock, flags);
696 return 0;
697 }
698
snd_sb16_dma_control_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)699 static int snd_sb16_dma_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
700 {
701 struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
702 unsigned long flags;
703 unsigned char nval, oval;
704 int change;
705
706 nval = ucontrol->value.enumerated.item[0];
707 if (nval > 2)
708 return -EINVAL;
709 spin_lock_irqsave(&chip->reg_lock, flags);
710 oval = snd_sb16_get_dma_mode(chip);
711 change = nval != oval;
712 snd_sb16_set_dma_mode(chip, nval);
713 spin_unlock_irqrestore(&chip->reg_lock, flags);
714 return change;
715 }
716
717 static const struct snd_kcontrol_new snd_sb16_dma_control = {
718 .iface = SNDRV_CTL_ELEM_IFACE_CARD,
719 .name = "16-bit DMA Allocation",
720 .info = snd_sb16_dma_control_info,
721 .get = snd_sb16_dma_control_get,
722 .put = snd_sb16_dma_control_put
723 };
724
725 /*
726 * Initialization part
727 */
728
snd_sb16dsp_configure(struct snd_sb * chip)729 int snd_sb16dsp_configure(struct snd_sb * chip)
730 {
731 unsigned long flags;
732 unsigned char irqreg = 0, dmareg = 0, mpureg;
733 unsigned char realirq, realdma, realmpureg;
734 /* note: mpu register should be present only on SB16 Vibra soundcards */
735
736 spin_lock_irqsave(&chip->mixer_lock, flags);
737 mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06;
738 spin_unlock_irqrestore(&chip->mixer_lock, flags);
739 switch (chip->irq) {
740 case 2:
741 case 9:
742 irqreg |= SB_IRQSETUP_IRQ9;
743 break;
744 case 5:
745 irqreg |= SB_IRQSETUP_IRQ5;
746 break;
747 case 7:
748 irqreg |= SB_IRQSETUP_IRQ7;
749 break;
750 case 10:
751 irqreg |= SB_IRQSETUP_IRQ10;
752 break;
753 default:
754 return -EINVAL;
755 }
756 if (chip->dma8 >= 0) {
757 switch (chip->dma8) {
758 case 0:
759 dmareg |= SB_DMASETUP_DMA0;
760 break;
761 case 1:
762 dmareg |= SB_DMASETUP_DMA1;
763 break;
764 case 3:
765 dmareg |= SB_DMASETUP_DMA3;
766 break;
767 default:
768 return -EINVAL;
769 }
770 }
771 if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
772 switch (chip->dma16) {
773 case 5:
774 dmareg |= SB_DMASETUP_DMA5;
775 break;
776 case 6:
777 dmareg |= SB_DMASETUP_DMA6;
778 break;
779 case 7:
780 dmareg |= SB_DMASETUP_DMA7;
781 break;
782 default:
783 return -EINVAL;
784 }
785 }
786 switch (chip->mpu_port) {
787 case 0x300:
788 mpureg |= 0x04;
789 break;
790 case 0x330:
791 mpureg |= 0x00;
792 break;
793 default:
794 mpureg |= 0x02; /* disable MPU */
795 }
796 spin_lock_irqsave(&chip->mixer_lock, flags);
797
798 snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg);
799 realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP);
800
801 snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg);
802 realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP);
803
804 snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg);
805 realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP);
806
807 spin_unlock_irqrestore(&chip->mixer_lock, flags);
808 if ((~realirq) & irqreg || (~realdma) & dmareg) {
809 dev_err(chip->card->dev,
810 "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n",
811 chip->port);
812 dev_err(chip->card->dev,
813 "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n",
814 chip->port, realirq, realdma, realmpureg);
815 dev_err(chip->card->dev,
816 "SB16 [0x%lx]: got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n",
817 chip->port, irqreg, dmareg, mpureg);
818 return -ENODEV;
819 }
820 return 0;
821 }
822
823 static const struct snd_pcm_ops snd_sb16_playback_ops = {
824 .open = snd_sb16_playback_open,
825 .close = snd_sb16_playback_close,
826 .prepare = snd_sb16_playback_prepare,
827 .trigger = snd_sb16_playback_trigger,
828 .pointer = snd_sb16_playback_pointer,
829 };
830
831 static const struct snd_pcm_ops snd_sb16_capture_ops = {
832 .open = snd_sb16_capture_open,
833 .close = snd_sb16_capture_close,
834 .prepare = snd_sb16_capture_prepare,
835 .trigger = snd_sb16_capture_trigger,
836 .pointer = snd_sb16_capture_pointer,
837 };
838
snd_sb16dsp_pcm(struct snd_sb * chip,int device)839 int snd_sb16dsp_pcm(struct snd_sb *chip, int device)
840 {
841 struct snd_card *card = chip->card;
842 struct snd_pcm *pcm;
843 int err;
844
845 err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm);
846 if (err < 0)
847 return err;
848 sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff);
849 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
850 pcm->private_data = chip;
851 chip->pcm = pcm;
852
853 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops);
854 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops);
855
856 if (chip->dma16 >= 0 && chip->dma8 != chip->dma16)
857 snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip));
858 else
859 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
860
861 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
862 card->dev, 64*1024, 128*1024);
863 return 0;
864 }
865
snd_sb16dsp_get_pcm_ops(int direction)866 const struct snd_pcm_ops *snd_sb16dsp_get_pcm_ops(int direction)
867 {
868 return direction == SNDRV_PCM_STREAM_PLAYBACK ?
869 &snd_sb16_playback_ops : &snd_sb16_capture_ops;
870 }
871
872 EXPORT_SYMBOL(snd_sb16dsp_pcm);
873 EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops);
874 EXPORT_SYMBOL(snd_sb16dsp_configure);
875 EXPORT_SYMBOL(snd_sb16dsp_interrupt);
876