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8#include "ff.h"
9
10static int hw_rule_rate(struct snd_pcm_hw_params *params,
11 struct snd_pcm_hw_rule *rule)
12{
13 const unsigned int *pcm_channels = 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 unsigned int i;
22
23 for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
24 enum snd_ff_stream_mode mode;
25 int err;
26
27 err = snd_ff_stream_get_multiplier_mode(i, &mode);
28 if (err < 0)
29 continue;
30
31 if (!snd_interval_test(c, pcm_channels[mode]))
32 continue;
33
34 t.min = min(t.min, amdtp_rate_table[i]);
35 t.max = max(t.max, amdtp_rate_table[i]);
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 const unsigned int *pcm_channels = 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_interval t = {
50 .min = UINT_MAX, .max = 0, .integer = 1
51 };
52 unsigned int i;
53
54 for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
55 enum snd_ff_stream_mode mode;
56 int err;
57
58 err = snd_ff_stream_get_multiplier_mode(i, &mode);
59 if (err < 0)
60 continue;
61
62 if (!snd_interval_test(r, amdtp_rate_table[i]))
63 continue;
64
65 t.min = min(t.min, pcm_channels[mode]);
66 t.max = max(t.max, pcm_channels[mode]);
67 }
68
69 return snd_interval_refine(c, &t);
70}
71
72static void limit_channels_and_rates(struct snd_pcm_hardware *hw,
73 const unsigned int *pcm_channels)
74{
75 unsigned int rate, channels;
76 int i;
77
78 hw->channels_min = UINT_MAX;
79 hw->channels_max = 0;
80 hw->rate_min = UINT_MAX;
81 hw->rate_max = 0;
82
83 for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
84 enum snd_ff_stream_mode mode;
85 int err;
86
87 err = snd_ff_stream_get_multiplier_mode(i, &mode);
88 if (err < 0)
89 continue;
90
91 channels = pcm_channels[mode];
92 if (pcm_channels[mode] == 0)
93 continue;
94 hw->channels_min = min(hw->channels_min, channels);
95 hw->channels_max = max(hw->channels_max, channels);
96
97 rate = amdtp_rate_table[i];
98 hw->rates |= snd_pcm_rate_to_rate_bit(rate);
99 hw->rate_min = min(hw->rate_min, rate);
100 hw->rate_max = max(hw->rate_max, rate);
101 }
102}
103
104static int pcm_init_hw_params(struct snd_ff *ff,
105 struct snd_pcm_substream *substream)
106{
107 struct snd_pcm_runtime *runtime = substream->runtime;
108 struct amdtp_stream *s;
109 const unsigned int *pcm_channels;
110 int err;
111
112 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
113 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
114 s = &ff->tx_stream;
115 pcm_channels = ff->spec->pcm_capture_channels;
116 } else {
117 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
118 s = &ff->rx_stream;
119 pcm_channels = ff->spec->pcm_playback_channels;
120 }
121
122 limit_channels_and_rates(&runtime->hw, pcm_channels);
123
124 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
125 hw_rule_channels, (void *)pcm_channels,
126 SNDRV_PCM_HW_PARAM_RATE, -1);
127 if (err < 0)
128 return err;
129
130 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
131 hw_rule_rate, (void *)pcm_channels,
132 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
133 if (err < 0)
134 return err;
135
136 return amdtp_ff_add_pcm_hw_constraints(s, runtime);
137}
138
139static int pcm_open(struct snd_pcm_substream *substream)
140{
141 struct snd_ff *ff = substream->private_data;
142 struct amdtp_domain *d = &ff->domain;
143 unsigned int rate;
144 enum snd_ff_clock_src src;
145 int i, err;
146
147 err = snd_ff_stream_lock_try(ff);
148 if (err < 0)
149 return err;
150
151 err = pcm_init_hw_params(ff, substream);
152 if (err < 0)
153 goto release_lock;
154
155 err = ff->spec->protocol->get_clock(ff, &rate, &src);
156 if (err < 0)
157 goto release_lock;
158
159 mutex_lock(&ff->mutex);
160
161
162
163
164 if (src != SND_FF_CLOCK_SRC_INTERNAL) {
165 for (i = 0; i < CIP_SFC_COUNT; ++i) {
166 if (amdtp_rate_table[i] == rate)
167 break;
168 }
169
170
171
172 if (i >= CIP_SFC_COUNT) {
173 mutex_unlock(&ff->mutex);
174 err = -EIO;
175 goto release_lock;
176 }
177
178 substream->runtime->hw.rate_min = rate;
179 substream->runtime->hw.rate_max = rate;
180 } else {
181 if (ff->substreams_counter > 0) {
182 unsigned int frames_per_period = d->events_per_period;
183 unsigned int frames_per_buffer = d->events_per_buffer;
184
185 rate = amdtp_rate_table[ff->rx_stream.sfc];
186 substream->runtime->hw.rate_min = rate;
187 substream->runtime->hw.rate_max = rate;
188
189 err = snd_pcm_hw_constraint_minmax(substream->runtime,
190 SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
191 frames_per_period, frames_per_period);
192 if (err < 0) {
193 mutex_unlock(&ff->mutex);
194 goto release_lock;
195 }
196
197 err = snd_pcm_hw_constraint_minmax(substream->runtime,
198 SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
199 frames_per_buffer, frames_per_buffer);
200 if (err < 0) {
201 mutex_unlock(&ff->mutex);
202 goto release_lock;
203 }
204 }
205 }
206
207 mutex_unlock(&ff->mutex);
208
209 snd_pcm_set_sync(substream);
210
211 return 0;
212
213release_lock:
214 snd_ff_stream_lock_release(ff);
215 return err;
216}
217
218static int pcm_close(struct snd_pcm_substream *substream)
219{
220 struct snd_ff *ff = substream->private_data;
221
222 snd_ff_stream_lock_release(ff);
223
224 return 0;
225}
226
227static int pcm_hw_params(struct snd_pcm_substream *substream,
228 struct snd_pcm_hw_params *hw_params)
229{
230 struct snd_ff *ff = substream->private_data;
231 int err = 0;
232
233 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
234 unsigned int rate = params_rate(hw_params);
235 unsigned int frames_per_period = params_period_size(hw_params);
236 unsigned int frames_per_buffer = params_buffer_size(hw_params);
237
238 mutex_lock(&ff->mutex);
239 err = snd_ff_stream_reserve_duplex(ff, rate, frames_per_period,
240 frames_per_buffer);
241 if (err >= 0)
242 ++ff->substreams_counter;
243 mutex_unlock(&ff->mutex);
244 }
245
246 return err;
247}
248
249static int pcm_hw_free(struct snd_pcm_substream *substream)
250{
251 struct snd_ff *ff = substream->private_data;
252
253 mutex_lock(&ff->mutex);
254
255 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
256 --ff->substreams_counter;
257
258 snd_ff_stream_stop_duplex(ff);
259
260 mutex_unlock(&ff->mutex);
261
262 return 0;
263}
264
265static int pcm_capture_prepare(struct snd_pcm_substream *substream)
266{
267 struct snd_ff *ff = substream->private_data;
268 struct snd_pcm_runtime *runtime = substream->runtime;
269 int err;
270
271 mutex_lock(&ff->mutex);
272
273 err = snd_ff_stream_start_duplex(ff, runtime->rate);
274 if (err >= 0)
275 amdtp_stream_pcm_prepare(&ff->tx_stream);
276
277 mutex_unlock(&ff->mutex);
278
279 return err;
280}
281
282static int pcm_playback_prepare(struct snd_pcm_substream *substream)
283{
284 struct snd_ff *ff = substream->private_data;
285 struct snd_pcm_runtime *runtime = substream->runtime;
286 int err;
287
288 mutex_lock(&ff->mutex);
289
290 err = snd_ff_stream_start_duplex(ff, runtime->rate);
291 if (err >= 0)
292 amdtp_stream_pcm_prepare(&ff->rx_stream);
293
294 mutex_unlock(&ff->mutex);
295
296 return err;
297}
298
299static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
300{
301 struct snd_ff *ff = substream->private_data;
302
303 switch (cmd) {
304 case SNDRV_PCM_TRIGGER_START:
305 amdtp_stream_pcm_trigger(&ff->tx_stream, substream);
306 break;
307 case SNDRV_PCM_TRIGGER_STOP:
308 amdtp_stream_pcm_trigger(&ff->tx_stream, NULL);
309 break;
310 default:
311 return -EINVAL;
312 }
313
314 return 0;
315}
316
317static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
318{
319 struct snd_ff *ff = substream->private_data;
320
321 switch (cmd) {
322 case SNDRV_PCM_TRIGGER_START:
323 amdtp_stream_pcm_trigger(&ff->rx_stream, substream);
324 break;
325 case SNDRV_PCM_TRIGGER_STOP:
326 amdtp_stream_pcm_trigger(&ff->rx_stream, NULL);
327 break;
328 default:
329 return -EINVAL;
330 }
331
332 return 0;
333}
334
335static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
336{
337 struct snd_ff *ff = sbstrm->private_data;
338
339 return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->tx_stream);
340}
341
342static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
343{
344 struct snd_ff *ff = sbstrm->private_data;
345
346 return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->rx_stream);
347}
348
349static int pcm_capture_ack(struct snd_pcm_substream *substream)
350{
351 struct snd_ff *ff = substream->private_data;
352
353 return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->tx_stream);
354}
355
356static int pcm_playback_ack(struct snd_pcm_substream *substream)
357{
358 struct snd_ff *ff = substream->private_data;
359
360 return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->rx_stream);
361}
362
363int snd_ff_create_pcm_devices(struct snd_ff *ff)
364{
365 static const struct snd_pcm_ops pcm_capture_ops = {
366 .open = pcm_open,
367 .close = pcm_close,
368 .hw_params = pcm_hw_params,
369 .hw_free = pcm_hw_free,
370 .prepare = pcm_capture_prepare,
371 .trigger = pcm_capture_trigger,
372 .pointer = pcm_capture_pointer,
373 .ack = pcm_capture_ack,
374 };
375 static const struct snd_pcm_ops pcm_playback_ops = {
376 .open = pcm_open,
377 .close = pcm_close,
378 .hw_params = pcm_hw_params,
379 .hw_free = pcm_hw_free,
380 .prepare = pcm_playback_prepare,
381 .trigger = pcm_playback_trigger,
382 .pointer = pcm_playback_pointer,
383 .ack = pcm_playback_ack,
384 };
385 struct snd_pcm *pcm;
386 int err;
387
388 err = snd_pcm_new(ff->card, ff->card->driver, 0, 1, 1, &pcm);
389 if (err < 0)
390 return err;
391
392 pcm->private_data = ff;
393 snprintf(pcm->name, sizeof(pcm->name),
394 "%s PCM", ff->card->shortname);
395 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
396 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
397 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
398
399 return 0;
400}
401
