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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 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);
142end:
143 return err;
144}
145
146static 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;
166end:
167 return err;
168}
169
170static 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);
195end:
196 return err;
197err_locked:
198 snd_oxfw_stream_lock_release(oxfw);
199 return err;
200}
201
202static 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
210static 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 mutex_lock(&oxfw->mutex);
223 oxfw->capture_substreams++;
224 mutex_unlock(&oxfw->mutex);
225 }
226
227 return 0;
228}
229static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
230 struct snd_pcm_hw_params *hw_params)
231{
232 struct snd_oxfw *oxfw = substream->private_data;
233 int err;
234
235 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
236 params_buffer_bytes(hw_params));
237 if (err < 0)
238 return err;
239
240 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
241 mutex_lock(&oxfw->mutex);
242 oxfw->playback_substreams++;
243 mutex_unlock(&oxfw->mutex);
244 }
245
246 return 0;
247}
248
249static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
250{
251 struct snd_oxfw *oxfw = substream->private_data;
252
253 mutex_lock(&oxfw->mutex);
254
255 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
256 oxfw->capture_substreams--;
257
258 snd_oxfw_stream_stop_simplex(oxfw, &oxfw->tx_stream);
259
260 mutex_unlock(&oxfw->mutex);
261
262 return snd_pcm_lib_free_vmalloc_buffer(substream);
263}
264static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
265{
266 struct snd_oxfw *oxfw = substream->private_data;
267
268 mutex_lock(&oxfw->mutex);
269
270 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
271 oxfw->playback_substreams--;
272
273 snd_oxfw_stream_stop_simplex(oxfw, &oxfw->rx_stream);
274
275 mutex_unlock(&oxfw->mutex);
276
277 return snd_pcm_lib_free_vmalloc_buffer(substream);
278}
279
280static int pcm_capture_prepare(struct snd_pcm_substream *substream)
281{
282 struct snd_oxfw *oxfw = substream->private_data;
283 struct snd_pcm_runtime *runtime = substream->runtime;
284 int err;
285
286 mutex_lock(&oxfw->mutex);
287 err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->tx_stream,
288 runtime->rate, runtime->channels);
289 mutex_unlock(&oxfw->mutex);
290 if (err < 0)
291 goto end;
292
293 amdtp_stream_pcm_prepare(&oxfw->tx_stream);
294end:
295 return err;
296}
297static int pcm_playback_prepare(struct snd_pcm_substream *substream)
298{
299 struct snd_oxfw *oxfw = substream->private_data;
300 struct snd_pcm_runtime *runtime = substream->runtime;
301 int err;
302
303 mutex_lock(&oxfw->mutex);
304 err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->rx_stream,
305 runtime->rate, runtime->channels);
306 mutex_unlock(&oxfw->mutex);
307 if (err < 0)
308 goto end;
309
310 amdtp_stream_pcm_prepare(&oxfw->rx_stream);
311end:
312 return err;
313}
314
315static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
316{
317 struct snd_oxfw *oxfw = substream->private_data;
318 struct snd_pcm_substream *pcm;
319
320 switch (cmd) {
321 case SNDRV_PCM_TRIGGER_START:
322 pcm = substream;
323 break;
324 case SNDRV_PCM_TRIGGER_STOP:
325 pcm = NULL;
326 break;
327 default:
328 return -EINVAL;
329 }
330 amdtp_stream_pcm_trigger(&oxfw->tx_stream, pcm);
331 return 0;
332}
333static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
334{
335 struct snd_oxfw *oxfw = substream->private_data;
336 struct snd_pcm_substream *pcm;
337
338 switch (cmd) {
339 case SNDRV_PCM_TRIGGER_START:
340 pcm = substream;
341 break;
342 case SNDRV_PCM_TRIGGER_STOP:
343 pcm = NULL;
344 break;
345 default:
346 return -EINVAL;
347 }
348 amdtp_stream_pcm_trigger(&oxfw->rx_stream, pcm);
349 return 0;
350}
351
352static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstm)
353{
354 struct snd_oxfw *oxfw = sbstm->private_data;
355
356 return amdtp_stream_pcm_pointer(&oxfw->tx_stream);
357}
358static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstm)
359{
360 struct snd_oxfw *oxfw = sbstm->private_data;
361
362 return amdtp_stream_pcm_pointer(&oxfw->rx_stream);
363}
364
365static int pcm_capture_ack(struct snd_pcm_substream *substream)
366{
367 struct snd_oxfw *oxfw = substream->private_data;
368
369 return amdtp_stream_pcm_ack(&oxfw->tx_stream);
370}
371
372static int pcm_playback_ack(struct snd_pcm_substream *substream)
373{
374 struct snd_oxfw *oxfw = substream->private_data;
375
376 return amdtp_stream_pcm_ack(&oxfw->rx_stream);
377}
378
379int snd_oxfw_create_pcm(struct snd_oxfw *oxfw)
380{
381 static const struct snd_pcm_ops capture_ops = {
382 .open = pcm_open,
383 .close = pcm_close,
384 .ioctl = snd_pcm_lib_ioctl,
385 .hw_params = pcm_capture_hw_params,
386 .hw_free = pcm_capture_hw_free,
387 .prepare = pcm_capture_prepare,
388 .trigger = pcm_capture_trigger,
389 .pointer = pcm_capture_pointer,
390 .ack = pcm_capture_ack,
391 .page = snd_pcm_lib_get_vmalloc_page,
392 };
393 static const struct snd_pcm_ops playback_ops = {
394 .open = pcm_open,
395 .close = pcm_close,
396 .ioctl = snd_pcm_lib_ioctl,
397 .hw_params = pcm_playback_hw_params,
398 .hw_free = pcm_playback_hw_free,
399 .prepare = pcm_playback_prepare,
400 .trigger = pcm_playback_trigger,
401 .pointer = pcm_playback_pointer,
402 .ack = pcm_playback_ack,
403 .page = snd_pcm_lib_get_vmalloc_page,
404 };
405 struct snd_pcm *pcm;
406 unsigned int cap = 0;
407 int err;
408
409 if (oxfw->has_output)
410 cap = 1;
411
412 err = snd_pcm_new(oxfw->card, oxfw->card->driver, 0, 1, cap, &pcm);
413 if (err < 0)
414 return err;
415
416 pcm->private_data = oxfw;
417 strcpy(pcm->name, oxfw->card->shortname);
418 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
419 if (cap > 0)
420 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
421
422 return 0;
423}
424
