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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 unsigned int rate;
143 enum snd_ff_clock_src src;
144 int i, err;
145
146 err = snd_ff_stream_lock_try(ff);
147 if (err < 0)
148 return err;
149
150 err = pcm_init_hw_params(ff, substream);
151 if (err < 0)
152 goto release_lock;
153
154 err = ff->spec->protocol->get_clock(ff, &rate, &src);
155 if (err < 0)
156 goto release_lock;
157
158 if (src != SND_FF_CLOCK_SRC_INTERNAL) {
159 for (i = 0; i < CIP_SFC_COUNT; ++i) {
160 if (amdtp_rate_table[i] == rate)
161 break;
162 }
163
164
165
166
167 if (i >= CIP_SFC_COUNT) {
168 err = -EIO;
169 goto release_lock;
170 }
171
172 substream->runtime->hw.rate_min = rate;
173 substream->runtime->hw.rate_max = rate;
174 } else {
175 if (amdtp_stream_pcm_running(&ff->rx_stream) ||
176 amdtp_stream_pcm_running(&ff->tx_stream)) {
177 rate = amdtp_rate_table[ff->rx_stream.sfc];
178 substream->runtime->hw.rate_min = rate;
179 substream->runtime->hw.rate_max = rate;
180 }
181 }
182
183 snd_pcm_set_sync(substream);
184
185 return 0;
186
187release_lock:
188 snd_ff_stream_lock_release(ff);
189 return err;
190}
191
192static int pcm_close(struct snd_pcm_substream *substream)
193{
194 struct snd_ff *ff = substream->private_data;
195
196 snd_ff_stream_lock_release(ff);
197
198 return 0;
199}
200
201static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
202 struct snd_pcm_hw_params *hw_params)
203{
204 struct snd_ff *ff = substream->private_data;
205 int err;
206
207 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
208 params_buffer_bytes(hw_params));
209 if (err < 0)
210 return err;
211
212 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
213 mutex_lock(&ff->mutex);
214 ff->substreams_counter++;
215 mutex_unlock(&ff->mutex);
216 }
217
218 return 0;
219}
220
221static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
222 struct snd_pcm_hw_params *hw_params)
223{
224 struct snd_ff *ff = substream->private_data;
225 int err;
226
227 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
228 params_buffer_bytes(hw_params));
229 if (err < 0)
230 return err;
231
232 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
233 mutex_lock(&ff->mutex);
234 ff->substreams_counter++;
235 mutex_unlock(&ff->mutex);
236 }
237
238 return 0;
239}
240
241static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
242{
243 struct snd_ff *ff = substream->private_data;
244
245 mutex_lock(&ff->mutex);
246
247 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
248 ff->substreams_counter--;
249
250 snd_ff_stream_stop_duplex(ff);
251
252 mutex_unlock(&ff->mutex);
253
254 return snd_pcm_lib_free_vmalloc_buffer(substream);
255}
256
257static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
258{
259 struct snd_ff *ff = substream->private_data;
260
261 mutex_lock(&ff->mutex);
262
263 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
264 ff->substreams_counter--;
265
266 snd_ff_stream_stop_duplex(ff);
267
268 mutex_unlock(&ff->mutex);
269
270 return snd_pcm_lib_free_vmalloc_buffer(substream);
271}
272
273static int pcm_capture_prepare(struct snd_pcm_substream *substream)
274{
275 struct snd_ff *ff = substream->private_data;
276 struct snd_pcm_runtime *runtime = substream->runtime;
277 int err;
278
279 mutex_lock(&ff->mutex);
280
281 err = snd_ff_stream_start_duplex(ff, runtime->rate);
282 if (err >= 0)
283 amdtp_stream_pcm_prepare(&ff->tx_stream);
284
285 mutex_unlock(&ff->mutex);
286
287 return err;
288}
289
290static int pcm_playback_prepare(struct snd_pcm_substream *substream)
291{
292 struct snd_ff *ff = substream->private_data;
293 struct snd_pcm_runtime *runtime = substream->runtime;
294 int err;
295
296 mutex_lock(&ff->mutex);
297
298 err = snd_ff_stream_start_duplex(ff, runtime->rate);
299 if (err >= 0)
300 amdtp_stream_pcm_prepare(&ff->rx_stream);
301
302 mutex_unlock(&ff->mutex);
303
304 return err;
305}
306
307static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
308{
309 struct snd_ff *ff = substream->private_data;
310
311 switch (cmd) {
312 case SNDRV_PCM_TRIGGER_START:
313 amdtp_stream_pcm_trigger(&ff->tx_stream, substream);
314 break;
315 case SNDRV_PCM_TRIGGER_STOP:
316 amdtp_stream_pcm_trigger(&ff->tx_stream, NULL);
317 break;
318 default:
319 return -EINVAL;
320 }
321
322 return 0;
323}
324
325static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
326{
327 struct snd_ff *ff = substream->private_data;
328
329 switch (cmd) {
330 case SNDRV_PCM_TRIGGER_START:
331 amdtp_stream_pcm_trigger(&ff->rx_stream, substream);
332 break;
333 case SNDRV_PCM_TRIGGER_STOP:
334 amdtp_stream_pcm_trigger(&ff->rx_stream, NULL);
335 break;
336 default:
337 return -EINVAL;
338 }
339
340 return 0;
341}
342
343static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
344{
345 struct snd_ff *ff = sbstrm->private_data;
346
347 return amdtp_stream_pcm_pointer(&ff->tx_stream);
348}
349
350static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
351{
352 struct snd_ff *ff = sbstrm->private_data;
353
354 return amdtp_stream_pcm_pointer(&ff->rx_stream);
355}
356
357static int pcm_capture_ack(struct snd_pcm_substream *substream)
358{
359 struct snd_ff *ff = substream->private_data;
360
361 return amdtp_stream_pcm_ack(&ff->tx_stream);
362}
363
364static int pcm_playback_ack(struct snd_pcm_substream *substream)
365{
366 struct snd_ff *ff = substream->private_data;
367
368 return amdtp_stream_pcm_ack(&ff->rx_stream);
369}
370
371int snd_ff_create_pcm_devices(struct snd_ff *ff)
372{
373 static const struct snd_pcm_ops pcm_capture_ops = {
374 .open = pcm_open,
375 .close = pcm_close,
376 .ioctl = snd_pcm_lib_ioctl,
377 .hw_params = pcm_capture_hw_params,
378 .hw_free = pcm_capture_hw_free,
379 .prepare = pcm_capture_prepare,
380 .trigger = pcm_capture_trigger,
381 .pointer = pcm_capture_pointer,
382 .ack = pcm_capture_ack,
383 .page = snd_pcm_lib_get_vmalloc_page,
384 };
385 static const struct snd_pcm_ops pcm_playback_ops = {
386 .open = pcm_open,
387 .close = pcm_close,
388 .ioctl = snd_pcm_lib_ioctl,
389 .hw_params = pcm_playback_hw_params,
390 .hw_free = pcm_playback_hw_free,
391 .prepare = pcm_playback_prepare,
392 .trigger = pcm_playback_trigger,
393 .pointer = pcm_playback_pointer,
394 .ack = pcm_playback_ack,
395 .page = snd_pcm_lib_get_vmalloc_page,
396 };
397 struct snd_pcm *pcm;
398 int err;
399
400 err = snd_pcm_new(ff->card, ff->card->driver, 0, 1, 1, &pcm);
401 if (err < 0)
402 return err;
403
404 pcm->private_data = ff;
405 snprintf(pcm->name, sizeof(pcm->name),
406 "%s PCM", ff->card->shortname);
407 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
408 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
409
410 return 0;
411}
412
