Commit | Line | Data |
---|---|---|
aa02bb6e TS |
1 | /* |
2 | * fireworks_pcm.c - a part of driver for Fireworks based devices | |
3 | * | |
4 | * Copyright (c) 2009-2010 Clemens Ladisch | |
5 | * Copyright (c) 2013-2014 Takashi Sakamoto | |
6 | * | |
7 | * Licensed under the terms of the GNU General Public License, version 2. | |
8 | */ | |
9 | #include "./fireworks.h" | |
10 | ||
11 | /* | |
12 | * NOTE: | |
13 | * Fireworks changes its AMDTP channels for PCM data according to its sampling | |
14 | * rate. There are three modes. Here _XX is either _rx or _tx. | |
15 | * 0: 32.0- 48.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels applied | |
16 | * 1: 88.2- 96.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_2x applied | |
17 | * 2: 176.4-192.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_4x applied | |
18 | * | |
19 | * The number of PCM channels for analog input and output are always fixed but | |
20 | * the number of PCM channels for digital input and output are differed. | |
21 | * | |
22 | * Additionally, according to "AudioFire Owner's Manual Version 2.2", in some | |
23 | * model, the number of PCM channels for digital input has more restriction | |
24 | * depending on which digital interface is selected. | |
25 | * - S/PDIF coaxial and optical : use input 1-2 | |
26 | * - ADAT optical at 32.0-48.0 kHz : use input 1-8 | |
27 | * - ADAT optical at 88.2-96.0 kHz : use input 1-4 (S/MUX format) | |
28 | * | |
29 | * The data in AMDTP channels for blank PCM channels are zero. | |
30 | */ | |
31 | static const unsigned int freq_table[] = { | |
32 | /* multiplier mode 0 */ | |
33 | [0] = 32000, | |
34 | [1] = 44100, | |
35 | [2] = 48000, | |
36 | /* multiplier mode 1 */ | |
37 | [3] = 88200, | |
38 | [4] = 96000, | |
39 | /* multiplier mode 2 */ | |
40 | [5] = 176400, | |
41 | [6] = 192000, | |
42 | }; | |
43 | ||
44 | static inline unsigned int | |
45 | get_multiplier_mode_with_index(unsigned int index) | |
46 | { | |
47 | return ((int)index - 1) / 2; | |
48 | } | |
49 | ||
50 | int snd_efw_get_multiplier_mode(unsigned int sampling_rate, unsigned int *mode) | |
51 | { | |
52 | unsigned int i; | |
53 | ||
54 | for (i = 0; i < ARRAY_SIZE(freq_table); i++) { | |
55 | if (freq_table[i] == sampling_rate) { | |
56 | *mode = get_multiplier_mode_with_index(i); | |
57 | return 0; | |
58 | } | |
59 | } | |
60 | ||
61 | return -EINVAL; | |
62 | } | |
63 | ||
64 | static int | |
65 | hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) | |
66 | { | |
67 | unsigned int *pcm_channels = rule->private; | |
68 | struct snd_interval *r = | |
69 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
70 | const struct snd_interval *c = | |
71 | hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
72 | struct snd_interval t = { | |
73 | .min = UINT_MAX, .max = 0, .integer = 1 | |
74 | }; | |
75 | unsigned int i, mode; | |
76 | ||
77 | for (i = 0; i < ARRAY_SIZE(freq_table); i++) { | |
78 | mode = get_multiplier_mode_with_index(i); | |
79 | if (!snd_interval_test(c, pcm_channels[mode])) | |
80 | continue; | |
81 | ||
82 | t.min = min(t.min, freq_table[i]); | |
83 | t.max = max(t.max, freq_table[i]); | |
84 | } | |
85 | ||
86 | return snd_interval_refine(r, &t); | |
87 | } | |
88 | ||
89 | static int | |
90 | hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) | |
91 | { | |
92 | unsigned int *pcm_channels = rule->private; | |
93 | struct snd_interval *c = | |
94 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
95 | const struct snd_interval *r = | |
96 | hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); | |
97 | struct snd_interval t = { | |
98 | .min = UINT_MAX, .max = 0, .integer = 1 | |
99 | }; | |
100 | unsigned int i, mode; | |
101 | ||
102 | for (i = 0; i < ARRAY_SIZE(freq_table); i++) { | |
103 | mode = get_multiplier_mode_with_index(i); | |
104 | if (!snd_interval_test(r, freq_table[i])) | |
105 | continue; | |
106 | ||
107 | t.min = min(t.min, pcm_channels[mode]); | |
108 | t.max = max(t.max, pcm_channels[mode]); | |
109 | } | |
110 | ||
111 | return snd_interval_refine(c, &t); | |
112 | } | |
113 | ||
114 | static void | |
115 | limit_channels(struct snd_pcm_hardware *hw, unsigned int *pcm_channels) | |
116 | { | |
117 | unsigned int i, mode; | |
118 | ||
119 | hw->channels_min = UINT_MAX; | |
120 | hw->channels_max = 0; | |
121 | ||
122 | for (i = 0; i < ARRAY_SIZE(freq_table); i++) { | |
123 | mode = get_multiplier_mode_with_index(i); | |
124 | if (pcm_channels[mode] == 0) | |
125 | continue; | |
126 | ||
127 | hw->channels_min = min(hw->channels_min, pcm_channels[mode]); | |
128 | hw->channels_max = max(hw->channels_max, pcm_channels[mode]); | |
129 | } | |
130 | } | |
131 | ||
132 | static void | |
133 | limit_period_and_buffer(struct snd_pcm_hardware *hw) | |
134 | { | |
135 | hw->periods_min = 2; /* SNDRV_PCM_INFO_BATCH */ | |
136 | hw->periods_max = UINT_MAX; | |
137 | ||
138 | hw->period_bytes_min = 4 * hw->channels_max; /* bytes for a frame */ | |
139 | ||
140 | /* Just to prevent from allocating much pages. */ | |
141 | hw->period_bytes_max = hw->period_bytes_min * 2048; | |
142 | hw->buffer_bytes_max = hw->period_bytes_max * hw->periods_min; | |
143 | } | |
144 | ||
145 | static int | |
146 | pcm_init_hw_params(struct snd_efw *efw, | |
147 | struct snd_pcm_substream *substream) | |
148 | { | |
149 | struct snd_pcm_runtime *runtime = substream->runtime; | |
150 | struct amdtp_stream *s; | |
151 | unsigned int *pcm_channels; | |
152 | int err; | |
153 | ||
154 | runtime->hw.info = SNDRV_PCM_INFO_BATCH | | |
155 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
156 | SNDRV_PCM_INFO_INTERLEAVED | | |
157 | SNDRV_PCM_INFO_JOINT_DUPLEX | | |
158 | SNDRV_PCM_INFO_MMAP | | |
159 | SNDRV_PCM_INFO_MMAP_VALID; | |
160 | ||
161 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { | |
49c7b3fc | 162 | runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS; |
aa02bb6e TS |
163 | s = &efw->tx_stream; |
164 | pcm_channels = efw->pcm_capture_channels; | |
165 | } else { | |
49c7b3fc | 166 | runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS; |
aa02bb6e TS |
167 | s = &efw->rx_stream; |
168 | pcm_channels = efw->pcm_playback_channels; | |
169 | } | |
170 | ||
171 | /* limit rates */ | |
172 | runtime->hw.rates = efw->supported_sampling_rate, | |
173 | snd_pcm_limit_hw_rates(runtime); | |
174 | ||
175 | limit_channels(&runtime->hw, pcm_channels); | |
176 | limit_period_and_buffer(&runtime->hw); | |
177 | ||
178 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
179 | hw_rule_channels, pcm_channels, | |
180 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
181 | if (err < 0) | |
182 | goto end; | |
183 | ||
184 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
185 | hw_rule_rate, pcm_channels, | |
186 | SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
187 | if (err < 0) | |
188 | goto end; | |
189 | ||
bc8500da | 190 | err = amdtp_am824_add_pcm_hw_constraints(s, runtime); |
aa02bb6e TS |
191 | end: |
192 | return err; | |
193 | } | |
194 | ||
195 | static int pcm_open(struct snd_pcm_substream *substream) | |
196 | { | |
197 | struct snd_efw *efw = substream->private_data; | |
a6b598bf TS |
198 | unsigned int sampling_rate; |
199 | enum snd_efw_clock_source clock_source; | |
aa02bb6e TS |
200 | int err; |
201 | ||
594ddced | 202 | err = snd_efw_stream_lock_try(efw); |
aa02bb6e TS |
203 | if (err < 0) |
204 | goto end; | |
205 | ||
594ddced TS |
206 | err = pcm_init_hw_params(efw, substream); |
207 | if (err < 0) | |
208 | goto err_locked; | |
209 | ||
aa02bb6e TS |
210 | err = snd_efw_command_get_clock_source(efw, &clock_source); |
211 | if (err < 0) | |
594ddced | 212 | goto err_locked; |
aa02bb6e TS |
213 | |
214 | /* | |
215 | * When source of clock is not internal or any PCM streams are running, | |
216 | * available sampling rate is limited at current sampling rate. | |
217 | */ | |
218 | if ((clock_source != SND_EFW_CLOCK_SOURCE_INTERNAL) || | |
219 | amdtp_stream_pcm_running(&efw->tx_stream) || | |
220 | amdtp_stream_pcm_running(&efw->rx_stream)) { | |
221 | err = snd_efw_command_get_sampling_rate(efw, &sampling_rate); | |
222 | if (err < 0) | |
594ddced | 223 | goto err_locked; |
aa02bb6e TS |
224 | substream->runtime->hw.rate_min = sampling_rate; |
225 | substream->runtime->hw.rate_max = sampling_rate; | |
226 | } | |
227 | ||
228 | snd_pcm_set_sync(substream); | |
229 | end: | |
230 | return err; | |
594ddced TS |
231 | err_locked: |
232 | snd_efw_stream_lock_release(efw); | |
233 | return err; | |
aa02bb6e TS |
234 | } |
235 | ||
236 | static int pcm_close(struct snd_pcm_substream *substream) | |
237 | { | |
594ddced TS |
238 | struct snd_efw *efw = substream->private_data; |
239 | snd_efw_stream_lock_release(efw); | |
aa02bb6e TS |
240 | return 0; |
241 | } | |
242 | ||
243 | static int pcm_capture_hw_params(struct snd_pcm_substream *substream, | |
244 | struct snd_pcm_hw_params *hw_params) | |
245 | { | |
246 | struct snd_efw *efw = substream->private_data; | |
22c103cd TS |
247 | int err; |
248 | ||
249 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
250 | params_buffer_bytes(hw_params)); | |
251 | if (err < 0) | |
252 | return err; | |
aa02bb6e | 253 | |
ea54a374 TS |
254 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
255 | mutex_lock(&efw->mutex); | |
4d2c50a0 | 256 | efw->capture_substreams++; |
ea54a374 TS |
257 | mutex_unlock(&efw->mutex); |
258 | } | |
85130cb4 TS |
259 | |
260 | amdtp_am824_set_pcm_format(&efw->tx_stream, params_format(hw_params)); | |
aa02bb6e | 261 | |
22c103cd | 262 | return 0; |
aa02bb6e TS |
263 | } |
264 | static int pcm_playback_hw_params(struct snd_pcm_substream *substream, | |
265 | struct snd_pcm_hw_params *hw_params) | |
266 | { | |
267 | struct snd_efw *efw = substream->private_data; | |
22c103cd TS |
268 | int err; |
269 | ||
270 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
271 | params_buffer_bytes(hw_params)); | |
272 | if (err < 0) | |
273 | return err; | |
aa02bb6e | 274 | |
ea54a374 TS |
275 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
276 | mutex_lock(&efw->mutex); | |
4d2c50a0 | 277 | efw->playback_substreams++; |
ea54a374 TS |
278 | mutex_unlock(&efw->mutex); |
279 | } | |
85130cb4 TS |
280 | |
281 | amdtp_am824_set_pcm_format(&efw->rx_stream, params_format(hw_params)); | |
aa02bb6e | 282 | |
22c103cd | 283 | return 0; |
aa02bb6e TS |
284 | } |
285 | ||
286 | static int pcm_capture_hw_free(struct snd_pcm_substream *substream) | |
287 | { | |
288 | struct snd_efw *efw = substream->private_data; | |
289 | ||
ea54a374 TS |
290 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) { |
291 | mutex_lock(&efw->mutex); | |
4d2c50a0 | 292 | efw->capture_substreams--; |
ea54a374 TS |
293 | mutex_unlock(&efw->mutex); |
294 | } | |
aa02bb6e TS |
295 | |
296 | snd_efw_stream_stop_duplex(efw); | |
297 | ||
298 | return snd_pcm_lib_free_vmalloc_buffer(substream); | |
299 | } | |
300 | static int pcm_playback_hw_free(struct snd_pcm_substream *substream) | |
301 | { | |
302 | struct snd_efw *efw = substream->private_data; | |
303 | ||
ea54a374 TS |
304 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) { |
305 | mutex_lock(&efw->mutex); | |
4d2c50a0 | 306 | efw->playback_substreams--; |
ea54a374 TS |
307 | mutex_unlock(&efw->mutex); |
308 | } | |
aa02bb6e TS |
309 | |
310 | snd_efw_stream_stop_duplex(efw); | |
311 | ||
312 | return snd_pcm_lib_free_vmalloc_buffer(substream); | |
313 | } | |
314 | ||
315 | static int pcm_capture_prepare(struct snd_pcm_substream *substream) | |
316 | { | |
317 | struct snd_efw *efw = substream->private_data; | |
318 | struct snd_pcm_runtime *runtime = substream->runtime; | |
319 | int err; | |
320 | ||
321 | err = snd_efw_stream_start_duplex(efw, runtime->rate); | |
322 | if (err >= 0) | |
323 | amdtp_stream_pcm_prepare(&efw->tx_stream); | |
324 | ||
325 | return err; | |
326 | } | |
327 | static int pcm_playback_prepare(struct snd_pcm_substream *substream) | |
328 | { | |
329 | struct snd_efw *efw = substream->private_data; | |
330 | struct snd_pcm_runtime *runtime = substream->runtime; | |
331 | int err; | |
332 | ||
333 | err = snd_efw_stream_start_duplex(efw, runtime->rate); | |
334 | if (err >= 0) | |
335 | amdtp_stream_pcm_prepare(&efw->rx_stream); | |
336 | ||
337 | return err; | |
338 | } | |
339 | ||
340 | static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) | |
341 | { | |
342 | struct snd_efw *efw = substream->private_data; | |
343 | ||
344 | switch (cmd) { | |
345 | case SNDRV_PCM_TRIGGER_START: | |
346 | amdtp_stream_pcm_trigger(&efw->tx_stream, substream); | |
347 | break; | |
348 | case SNDRV_PCM_TRIGGER_STOP: | |
349 | amdtp_stream_pcm_trigger(&efw->tx_stream, NULL); | |
350 | break; | |
351 | default: | |
352 | return -EINVAL; | |
353 | } | |
354 | ||
355 | return 0; | |
356 | } | |
357 | static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) | |
358 | { | |
359 | struct snd_efw *efw = substream->private_data; | |
360 | ||
361 | switch (cmd) { | |
362 | case SNDRV_PCM_TRIGGER_START: | |
363 | amdtp_stream_pcm_trigger(&efw->rx_stream, substream); | |
364 | break; | |
365 | case SNDRV_PCM_TRIGGER_STOP: | |
366 | amdtp_stream_pcm_trigger(&efw->rx_stream, NULL); | |
367 | break; | |
368 | default: | |
369 | return -EINVAL; | |
370 | } | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
375 | static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) | |
376 | { | |
377 | struct snd_efw *efw = sbstrm->private_data; | |
378 | return amdtp_stream_pcm_pointer(&efw->tx_stream); | |
379 | } | |
380 | static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) | |
381 | { | |
382 | struct snd_efw *efw = sbstrm->private_data; | |
383 | return amdtp_stream_pcm_pointer(&efw->rx_stream); | |
384 | } | |
385 | ||
386 | static const struct snd_pcm_ops pcm_capture_ops = { | |
387 | .open = pcm_open, | |
388 | .close = pcm_close, | |
389 | .ioctl = snd_pcm_lib_ioctl, | |
390 | .hw_params = pcm_capture_hw_params, | |
391 | .hw_free = pcm_capture_hw_free, | |
392 | .prepare = pcm_capture_prepare, | |
393 | .trigger = pcm_capture_trigger, | |
394 | .pointer = pcm_capture_pointer, | |
395 | .page = snd_pcm_lib_get_vmalloc_page, | |
396 | }; | |
397 | ||
398 | static const struct snd_pcm_ops pcm_playback_ops = { | |
399 | .open = pcm_open, | |
400 | .close = pcm_close, | |
401 | .ioctl = snd_pcm_lib_ioctl, | |
402 | .hw_params = pcm_playback_hw_params, | |
403 | .hw_free = pcm_playback_hw_free, | |
404 | .prepare = pcm_playback_prepare, | |
405 | .trigger = pcm_playback_trigger, | |
406 | .pointer = pcm_playback_pointer, | |
407 | .page = snd_pcm_lib_get_vmalloc_page, | |
408 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
409 | }; | |
410 | ||
411 | int snd_efw_create_pcm_devices(struct snd_efw *efw) | |
412 | { | |
413 | struct snd_pcm *pcm; | |
414 | int err; | |
415 | ||
416 | err = snd_pcm_new(efw->card, efw->card->driver, 0, 1, 1, &pcm); | |
417 | if (err < 0) | |
418 | goto end; | |
419 | ||
420 | pcm->private_data = efw; | |
421 | snprintf(pcm->name, sizeof(pcm->name), "%s PCM", efw->card->shortname); | |
422 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops); | |
423 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops); | |
424 | end: | |
425 | return err; | |
426 | } | |
427 |