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8#include "oxfw.h"
9
10static 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
41static 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
80static 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
109static void limit_period_and_buffer(struct snd_pcm_hardware *hw)
110{
111 hw->periods_min = 2;
112 hw->periods_max = UINT_MAX;
113
114 hw->period_bytes_min = 4 * hw->channels_max;
115
116
117 hw->period_bytes_max = hw->period_bytes_min * 2048;
118 hw->buffer_bytes_max = hw->period_bytes_max * hw->periods_min;
119}
120
121static int init_hw_params(struct snd_oxfw *oxfw,
122 struct snd_pcm_substream *substream)
123{
124 struct snd_pcm_runtime *runtime = substream->runtime;
125 u8 **formats;
126 struct amdtp_stream *stream;
127 int err;
128
129 runtime->hw.info = SNDRV_PCM_INFO_BATCH |
130 SNDRV_PCM_INFO_BLOCK_TRANSFER |
131 SNDRV_PCM_INFO_INTERLEAVED |
132 SNDRV_PCM_INFO_JOINT_DUPLEX |
133 SNDRV_PCM_INFO_MMAP |
134 SNDRV_PCM_INFO_MMAP_VALID;
135
136 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
137 runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
138 stream = &oxfw->tx_stream;
139 formats = oxfw->tx_stream_formats;
140 } else {
141 runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
142 stream = &oxfw->rx_stream;
143 formats = oxfw->rx_stream_formats;
144 }
145
146 limit_channels_and_rates(&runtime->hw, formats);
147 limit_period_and_buffer(&runtime->hw);
148
149 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
150 hw_rule_channels, formats,
151 SNDRV_PCM_HW_PARAM_RATE, -1);
152 if (err < 0)
153 goto end;
154
155 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
156 hw_rule_rate, formats,
157 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
158 if (err < 0)
159 goto end;
160
161 err = amdtp_am824_add_pcm_hw_constraints(stream, runtime);
162end:
163 return err;
164}
165
166static int limit_to_current_params(struct snd_pcm_substream *substream)
167{
168 struct snd_oxfw *oxfw = substream->private_data;
169 struct snd_oxfw_stream_formation formation;
170 enum avc_general_plug_dir dir;
171 int err;
172
173 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
174 dir = AVC_GENERAL_PLUG_DIR_OUT;
175 else
176 dir = AVC_GENERAL_PLUG_DIR_IN;
177
178 err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation);
179 if (err < 0)
180 goto end;
181
182 substream->runtime->hw.channels_min = formation.pcm;
183 substream->runtime->hw.channels_max = formation.pcm;
184 substream->runtime->hw.rate_min = formation.rate;
185 substream->runtime->hw.rate_max = formation.rate;
186end:
187 return err;
188}
189
190static int pcm_open(struct snd_pcm_substream *substream)
191{
192 struct snd_oxfw *oxfw = substream->private_data;
193 int err;
194
195 err = snd_oxfw_stream_lock_try(oxfw);
196 if (err < 0)
197 goto end;
198
199 err = init_hw_params(oxfw, substream);
200 if (err < 0)
201 goto err_locked;
202
203
204
205
206
207 if (amdtp_stream_pcm_running(&oxfw->tx_stream) ||
208 amdtp_stream_pcm_running(&oxfw->rx_stream)) {
209 err = limit_to_current_params(substream);
210 if (err < 0)
211 goto end;
212 }
213
214 snd_pcm_set_sync(substream);
215end:
216 return err;
217err_locked:
218 snd_oxfw_stream_lock_release(oxfw);
219 return err;
220}
221
222static int pcm_close(struct snd_pcm_substream *substream)
223{
224 struct snd_oxfw *oxfw = substream->private_data;
225
226 snd_oxfw_stream_lock_release(oxfw);
227 return 0;
228}
229
230static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
231 struct snd_pcm_hw_params *hw_params)
232{
233 struct snd_oxfw *oxfw = substream->private_data;
234 int err;
235
236 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
237 params_buffer_bytes(hw_params));
238 if (err < 0)
239 return err;
240
241 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
242 mutex_lock(&oxfw->mutex);
243 oxfw->capture_substreams++;
244 mutex_unlock(&oxfw->mutex);
245 }
246
247 amdtp_am824_set_pcm_format(&oxfw->tx_stream, params_format(hw_params));
248
249 return 0;
250}
251static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
252 struct snd_pcm_hw_params *hw_params)
253{
254 struct snd_oxfw *oxfw = substream->private_data;
255 int err;
256
257 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
258 params_buffer_bytes(hw_params));
259 if (err < 0)
260 return err;
261
262 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
263 mutex_lock(&oxfw->mutex);
264 oxfw->playback_substreams++;
265 mutex_unlock(&oxfw->mutex);
266 }
267
268 amdtp_am824_set_pcm_format(&oxfw->rx_stream, params_format(hw_params));
269
270 return 0;
271}
272
273static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
274{
275 struct snd_oxfw *oxfw = substream->private_data;
276
277 mutex_lock(&oxfw->mutex);
278
279 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
280 oxfw->capture_substreams--;
281
282 snd_oxfw_stream_stop_simplex(oxfw, &oxfw->tx_stream);
283
284 mutex_unlock(&oxfw->mutex);
285
286 return snd_pcm_lib_free_vmalloc_buffer(substream);
287}
288static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
289{
290 struct snd_oxfw *oxfw = substream->private_data;
291
292 mutex_lock(&oxfw->mutex);
293
294 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
295 oxfw->playback_substreams--;
296
297 snd_oxfw_stream_stop_simplex(oxfw, &oxfw->rx_stream);
298
299 mutex_unlock(&oxfw->mutex);
300
301 return snd_pcm_lib_free_vmalloc_buffer(substream);
302}
303
304static int pcm_capture_prepare(struct snd_pcm_substream *substream)
305{
306 struct snd_oxfw *oxfw = substream->private_data;
307 struct snd_pcm_runtime *runtime = substream->runtime;
308 int err;
309
310 mutex_lock(&oxfw->mutex);
311 err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->tx_stream,
312 runtime->rate, runtime->channels);
313 mutex_unlock(&oxfw->mutex);
314 if (err < 0)
315 goto end;
316
317 amdtp_stream_pcm_prepare(&oxfw->tx_stream);
318end:
319 return err;
320}
321static int pcm_playback_prepare(struct snd_pcm_substream *substream)
322{
323 struct snd_oxfw *oxfw = substream->private_data;
324 struct snd_pcm_runtime *runtime = substream->runtime;
325 int err;
326
327 mutex_lock(&oxfw->mutex);
328 err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->rx_stream,
329 runtime->rate, runtime->channels);
330 mutex_unlock(&oxfw->mutex);
331 if (err < 0)
332 goto end;
333
334 amdtp_stream_pcm_prepare(&oxfw->rx_stream);
335end:
336 return err;
337}
338
339static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
340{
341 struct snd_oxfw *oxfw = substream->private_data;
342 struct snd_pcm_substream *pcm;
343
344 switch (cmd) {
345 case SNDRV_PCM_TRIGGER_START:
346 pcm = substream;
347 break;
348 case SNDRV_PCM_TRIGGER_STOP:
349 pcm = NULL;
350 break;
351 default:
352 return -EINVAL;
353 }
354 amdtp_stream_pcm_trigger(&oxfw->tx_stream, pcm);
355 return 0;
356}
357static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
358{
359 struct snd_oxfw *oxfw = substream->private_data;
360 struct snd_pcm_substream *pcm;
361
362 switch (cmd) {
363 case SNDRV_PCM_TRIGGER_START:
364 pcm = substream;
365 break;
366 case SNDRV_PCM_TRIGGER_STOP:
367 pcm = NULL;
368 break;
369 default:
370 return -EINVAL;
371 }
372 amdtp_stream_pcm_trigger(&oxfw->rx_stream, pcm);
373 return 0;
374}
375
376static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstm)
377{
378 struct snd_oxfw *oxfw = sbstm->private_data;
379
380 return amdtp_stream_pcm_pointer(&oxfw->tx_stream);
381}
382static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstm)
383{
384 struct snd_oxfw *oxfw = sbstm->private_data;
385
386 return amdtp_stream_pcm_pointer(&oxfw->rx_stream);
387}
388
389int snd_oxfw_create_pcm(struct snd_oxfw *oxfw)
390{
391 static const struct snd_pcm_ops capture_ops = {
392 .open = pcm_open,
393 .close = pcm_close,
394 .ioctl = snd_pcm_lib_ioctl,
395 .hw_params = pcm_capture_hw_params,
396 .hw_free = pcm_capture_hw_free,
397 .prepare = pcm_capture_prepare,
398 .trigger = pcm_capture_trigger,
399 .pointer = pcm_capture_pointer,
400 .page = snd_pcm_lib_get_vmalloc_page,
401 .mmap = snd_pcm_lib_mmap_vmalloc,
402 };
403 static const struct snd_pcm_ops playback_ops = {
404 .open = pcm_open,
405 .close = pcm_close,
406 .ioctl = snd_pcm_lib_ioctl,
407 .hw_params = pcm_playback_hw_params,
408 .hw_free = pcm_playback_hw_free,
409 .prepare = pcm_playback_prepare,
410 .trigger = pcm_playback_trigger,
411 .pointer = pcm_playback_pointer,
412 .page = snd_pcm_lib_get_vmalloc_page,
413 .mmap = snd_pcm_lib_mmap_vmalloc,
414 };
415 struct snd_pcm *pcm;
416 unsigned int cap = 0;
417 int err;
418
419 if (oxfw->has_output)
420 cap = 1;
421
422 err = snd_pcm_new(oxfw->card, oxfw->card->driver, 0, 1, cap, &pcm);
423 if (err < 0)
424 return err;
425
426 pcm->private_data = oxfw;
427 strcpy(pcm->name, oxfw->card->shortname);
428 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
429 if (cap > 0)
430 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
431
432 return 0;
433}
434
