This source file includes following definitions.
- hw_rule_rate
- hw_rule_channels
- limit_channels_and_rates
- init_hw_params
- limit_to_current_params
- pcm_open
- pcm_close
- pcm_capture_hw_params
- pcm_playback_hw_params
- pcm_capture_hw_free
- pcm_playback_hw_free
- pcm_capture_prepare
- pcm_playback_prepare
- pcm_capture_trigger
- pcm_playback_trigger
- pcm_capture_pointer
- pcm_playback_pointer
- pcm_capture_ack
- pcm_playback_ack
- snd_oxfw_create_pcm
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8 #include "oxfw.h"
9
10 static int hw_rule_rate(struct snd_pcm_hw_params *params,
11 struct snd_pcm_hw_rule *rule)
12 {
13 u8 **formats = rule->private;
14 struct snd_interval *r =
15 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
16 const struct snd_interval *c =
17 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
18 struct snd_interval t = {
19 .min = UINT_MAX, .max = 0, .integer = 1
20 };
21 struct snd_oxfw_stream_formation formation;
22 int i, err;
23
24 for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
25 if (formats[i] == NULL)
26 continue;
27
28 err = snd_oxfw_stream_parse_format(formats[i], &formation);
29 if (err < 0)
30 continue;
31 if (!snd_interval_test(c, formation.pcm))
32 continue;
33
34 t.min = min(t.min, formation.rate);
35 t.max = max(t.max, formation.rate);
36
37 }
38 return snd_interval_refine(r, &t);
39 }
40
41 static int hw_rule_channels(struct snd_pcm_hw_params *params,
42 struct snd_pcm_hw_rule *rule)
43 {
44 u8 **formats = rule->private;
45 struct snd_interval *c =
46 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
47 const struct snd_interval *r =
48 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
49 struct snd_oxfw_stream_formation formation;
50 int i, j, err;
51 unsigned int count, list[SND_OXFW_STREAM_FORMAT_ENTRIES] = {0};
52
53 count = 0;
54 for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
55 if (formats[i] == NULL)
56 break;
57
58 err = snd_oxfw_stream_parse_format(formats[i], &formation);
59 if (err < 0)
60 continue;
61 if (!snd_interval_test(r, formation.rate))
62 continue;
63 if (list[count] == formation.pcm)
64 continue;
65
66 for (j = 0; j < ARRAY_SIZE(list); j++) {
67 if (list[j] == formation.pcm)
68 break;
69 }
70 if (j == ARRAY_SIZE(list)) {
71 list[count] = formation.pcm;
72 if (++count == ARRAY_SIZE(list))
73 break;
74 }
75 }
76
77 return snd_interval_list(c, count, list, 0);
78 }
79
80 static void limit_channels_and_rates(struct snd_pcm_hardware *hw, u8 **formats)
81 {
82 struct snd_oxfw_stream_formation formation;
83 int i, err;
84
85 hw->channels_min = UINT_MAX;
86 hw->channels_max = 0;
87
88 hw->rate_min = UINT_MAX;
89 hw->rate_max = 0;
90 hw->rates = 0;
91
92 for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
93 if (formats[i] == NULL)
94 break;
95
96 err = snd_oxfw_stream_parse_format(formats[i], &formation);
97 if (err < 0)
98 continue;
99
100 hw->channels_min = min(hw->channels_min, formation.pcm);
101 hw->channels_max = max(hw->channels_max, formation.pcm);
102
103 hw->rate_min = min(hw->rate_min, formation.rate);
104 hw->rate_max = max(hw->rate_max, formation.rate);
105 hw->rates |= snd_pcm_rate_to_rate_bit(formation.rate);
106 }
107 }
108
109 static int init_hw_params(struct snd_oxfw *oxfw,
110 struct snd_pcm_substream *substream)
111 {
112 struct snd_pcm_runtime *runtime = substream->runtime;
113 u8 **formats;
114 struct amdtp_stream *stream;
115 int err;
116
117 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
118 runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
119 stream = &oxfw->tx_stream;
120 formats = oxfw->tx_stream_formats;
121 } else {
122 runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
123 stream = &oxfw->rx_stream;
124 formats = oxfw->rx_stream_formats;
125 }
126
127 limit_channels_and_rates(&runtime->hw, formats);
128
129 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
130 hw_rule_channels, formats,
131 SNDRV_PCM_HW_PARAM_RATE, -1);
132 if (err < 0)
133 goto end;
134
135 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
136 hw_rule_rate, formats,
137 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
138 if (err < 0)
139 goto end;
140
141 err = amdtp_am824_add_pcm_hw_constraints(stream, runtime);
142 end:
143 return err;
144 }
145
146 static int limit_to_current_params(struct snd_pcm_substream *substream)
147 {
148 struct snd_oxfw *oxfw = substream->private_data;
149 struct snd_oxfw_stream_formation formation;
150 enum avc_general_plug_dir dir;
151 int err;
152
153 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
154 dir = AVC_GENERAL_PLUG_DIR_OUT;
155 else
156 dir = AVC_GENERAL_PLUG_DIR_IN;
157
158 err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation);
159 if (err < 0)
160 goto end;
161
162 substream->runtime->hw.channels_min = formation.pcm;
163 substream->runtime->hw.channels_max = formation.pcm;
164 substream->runtime->hw.rate_min = formation.rate;
165 substream->runtime->hw.rate_max = formation.rate;
166 end:
167 return err;
168 }
169
170 static int pcm_open(struct snd_pcm_substream *substream)
171 {
172 struct snd_oxfw *oxfw = substream->private_data;
173 int err;
174
175 err = snd_oxfw_stream_lock_try(oxfw);
176 if (err < 0)
177 goto end;
178
179 err = init_hw_params(oxfw, substream);
180 if (err < 0)
181 goto err_locked;
182
183
184
185
186
187 if (amdtp_stream_pcm_running(&oxfw->tx_stream) ||
188 amdtp_stream_pcm_running(&oxfw->rx_stream)) {
189 err = limit_to_current_params(substream);
190 if (err < 0)
191 goto end;
192 }
193
194 snd_pcm_set_sync(substream);
195 end:
196 return err;
197 err_locked:
198 snd_oxfw_stream_lock_release(oxfw);
199 return err;
200 }
201
202 static int pcm_close(struct snd_pcm_substream *substream)
203 {
204 struct snd_oxfw *oxfw = substream->private_data;
205
206 snd_oxfw_stream_lock_release(oxfw);
207 return 0;
208 }
209
210 static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
211 struct snd_pcm_hw_params *hw_params)
212 {
213 struct snd_oxfw *oxfw = substream->private_data;
214 int err;
215
216 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
217 params_buffer_bytes(hw_params));
218 if (err < 0)
219 return err;
220
221 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
222 unsigned int rate = params_rate(hw_params);
223 unsigned int channels = params_channels(hw_params);
224
225 mutex_lock(&oxfw->mutex);
226 err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->tx_stream,
227 rate, channels);
228 if (err >= 0)
229 ++oxfw->substreams_count;
230 mutex_unlock(&oxfw->mutex);
231 }
232
233 return err;
234 }
235 static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
236 struct snd_pcm_hw_params *hw_params)
237 {
238 struct snd_oxfw *oxfw = substream->private_data;
239 int err;
240
241 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
242 params_buffer_bytes(hw_params));
243 if (err < 0)
244 return err;
245
246 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
247 unsigned int rate = params_rate(hw_params);
248 unsigned int channels = params_channels(hw_params);
249
250 mutex_lock(&oxfw->mutex);
251 err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->rx_stream,
252 rate, channels);
253 if (err >= 0)
254 ++oxfw->substreams_count;
255 mutex_unlock(&oxfw->mutex);
256 }
257
258 return err;
259 }
260
261 static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
262 {
263 struct snd_oxfw *oxfw = substream->private_data;
264
265 mutex_lock(&oxfw->mutex);
266
267 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
268 --oxfw->substreams_count;
269
270 snd_oxfw_stream_stop_duplex(oxfw);
271
272 mutex_unlock(&oxfw->mutex);
273
274 return snd_pcm_lib_free_vmalloc_buffer(substream);
275 }
276 static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
277 {
278 struct snd_oxfw *oxfw = substream->private_data;
279
280 mutex_lock(&oxfw->mutex);
281
282 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
283 --oxfw->substreams_count;
284
285 snd_oxfw_stream_stop_duplex(oxfw);
286
287 mutex_unlock(&oxfw->mutex);
288
289 return snd_pcm_lib_free_vmalloc_buffer(substream);
290 }
291
292 static int pcm_capture_prepare(struct snd_pcm_substream *substream)
293 {
294 struct snd_oxfw *oxfw = substream->private_data;
295 int err;
296
297 mutex_lock(&oxfw->mutex);
298 err = snd_oxfw_stream_start_duplex(oxfw);
299 mutex_unlock(&oxfw->mutex);
300 if (err < 0)
301 goto end;
302
303 amdtp_stream_pcm_prepare(&oxfw->tx_stream);
304 end:
305 return err;
306 }
307 static int pcm_playback_prepare(struct snd_pcm_substream *substream)
308 {
309 struct snd_oxfw *oxfw = substream->private_data;
310 int err;
311
312 mutex_lock(&oxfw->mutex);
313 err = snd_oxfw_stream_start_duplex(oxfw);
314 mutex_unlock(&oxfw->mutex);
315 if (err < 0)
316 goto end;
317
318 amdtp_stream_pcm_prepare(&oxfw->rx_stream);
319 end:
320 return err;
321 }
322
323 static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
324 {
325 struct snd_oxfw *oxfw = substream->private_data;
326 struct snd_pcm_substream *pcm;
327
328 switch (cmd) {
329 case SNDRV_PCM_TRIGGER_START:
330 pcm = substream;
331 break;
332 case SNDRV_PCM_TRIGGER_STOP:
333 pcm = NULL;
334 break;
335 default:
336 return -EINVAL;
337 }
338 amdtp_stream_pcm_trigger(&oxfw->tx_stream, pcm);
339 return 0;
340 }
341 static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
342 {
343 struct snd_oxfw *oxfw = substream->private_data;
344 struct snd_pcm_substream *pcm;
345
346 switch (cmd) {
347 case SNDRV_PCM_TRIGGER_START:
348 pcm = substream;
349 break;
350 case SNDRV_PCM_TRIGGER_STOP:
351 pcm = NULL;
352 break;
353 default:
354 return -EINVAL;
355 }
356 amdtp_stream_pcm_trigger(&oxfw->rx_stream, pcm);
357 return 0;
358 }
359
360 static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstm)
361 {
362 struct snd_oxfw *oxfw = sbstm->private_data;
363
364 return amdtp_stream_pcm_pointer(&oxfw->tx_stream);
365 }
366 static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstm)
367 {
368 struct snd_oxfw *oxfw = sbstm->private_data;
369
370 return amdtp_stream_pcm_pointer(&oxfw->rx_stream);
371 }
372
373 static int pcm_capture_ack(struct snd_pcm_substream *substream)
374 {
375 struct snd_oxfw *oxfw = substream->private_data;
376
377 return amdtp_stream_pcm_ack(&oxfw->tx_stream);
378 }
379
380 static int pcm_playback_ack(struct snd_pcm_substream *substream)
381 {
382 struct snd_oxfw *oxfw = substream->private_data;
383
384 return amdtp_stream_pcm_ack(&oxfw->rx_stream);
385 }
386
387 int snd_oxfw_create_pcm(struct snd_oxfw *oxfw)
388 {
389 static const struct snd_pcm_ops capture_ops = {
390 .open = pcm_open,
391 .close = pcm_close,
392 .ioctl = snd_pcm_lib_ioctl,
393 .hw_params = pcm_capture_hw_params,
394 .hw_free = pcm_capture_hw_free,
395 .prepare = pcm_capture_prepare,
396 .trigger = pcm_capture_trigger,
397 .pointer = pcm_capture_pointer,
398 .ack = pcm_capture_ack,
399 .page = snd_pcm_lib_get_vmalloc_page,
400 };
401 static const struct snd_pcm_ops playback_ops = {
402 .open = pcm_open,
403 .close = pcm_close,
404 .ioctl = snd_pcm_lib_ioctl,
405 .hw_params = pcm_playback_hw_params,
406 .hw_free = pcm_playback_hw_free,
407 .prepare = pcm_playback_prepare,
408 .trigger = pcm_playback_trigger,
409 .pointer = pcm_playback_pointer,
410 .ack = pcm_playback_ack,
411 .page = snd_pcm_lib_get_vmalloc_page,
412 };
413 struct snd_pcm *pcm;
414 unsigned int cap = 0;
415 int err;
416
417 if (oxfw->has_output)
418 cap = 1;
419
420 err = snd_pcm_new(oxfw->card, oxfw->card->driver, 0, 1, cap, &pcm);
421 if (err < 0)
422 return err;
423
424 pcm->private_data = oxfw;
425 strcpy(pcm->name, oxfw->card->shortname);
426 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
427 if (cap > 0)
428 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
429
430 return 0;
431 }