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8#include "./fireworks.h"
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30static const unsigned int freq_table[] = {
31
32 [0] = 32000,
33 [1] = 44100,
34 [2] = 48000,
35
36 [3] = 88200,
37 [4] = 96000,
38
39 [5] = 176400,
40 [6] = 192000,
41};
42
43static inline unsigned int
44get_multiplier_mode_with_index(unsigned int index)
45{
46 return ((int)index - 1) / 2;
47}
48
49int snd_efw_get_multiplier_mode(unsigned int sampling_rate, unsigned int *mode)
50{
51 unsigned int i;
52
53 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
54 if (freq_table[i] == sampling_rate) {
55 *mode = get_multiplier_mode_with_index(i);
56 return 0;
57 }
58 }
59
60 return -EINVAL;
61}
62
63static int
64hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
65{
66 unsigned int *pcm_channels = rule->private;
67 struct snd_interval *r =
68 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
69 const struct snd_interval *c =
70 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
71 struct snd_interval t = {
72 .min = UINT_MAX, .max = 0, .integer = 1
73 };
74 unsigned int i, mode;
75
76 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
77 mode = get_multiplier_mode_with_index(i);
78 if (!snd_interval_test(c, pcm_channels[mode]))
79 continue;
80
81 t.min = min(t.min, freq_table[i]);
82 t.max = max(t.max, freq_table[i]);
83 }
84
85 return snd_interval_refine(r, &t);
86}
87
88static int
89hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
90{
91 unsigned int *pcm_channels = rule->private;
92 struct snd_interval *c =
93 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
94 const struct snd_interval *r =
95 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
96 struct snd_interval t = {
97 .min = UINT_MAX, .max = 0, .integer = 1
98 };
99 unsigned int i, mode;
100
101 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
102 mode = get_multiplier_mode_with_index(i);
103 if (!snd_interval_test(r, freq_table[i]))
104 continue;
105
106 t.min = min(t.min, pcm_channels[mode]);
107 t.max = max(t.max, pcm_channels[mode]);
108 }
109
110 return snd_interval_refine(c, &t);
111}
112
113static void
114limit_channels(struct snd_pcm_hardware *hw, unsigned int *pcm_channels)
115{
116 unsigned int i, mode;
117
118 hw->channels_min = UINT_MAX;
119 hw->channels_max = 0;
120
121 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
122 mode = get_multiplier_mode_with_index(i);
123 if (pcm_channels[mode] == 0)
124 continue;
125
126 hw->channels_min = min(hw->channels_min, pcm_channels[mode]);
127 hw->channels_max = max(hw->channels_max, pcm_channels[mode]);
128 }
129}
130
131static int
132pcm_init_hw_params(struct snd_efw *efw,
133 struct snd_pcm_substream *substream)
134{
135 struct snd_pcm_runtime *runtime = substream->runtime;
136 struct amdtp_stream *s;
137 unsigned int *pcm_channels;
138 int err;
139
140 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
141 runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
142 s = &efw->tx_stream;
143 pcm_channels = efw->pcm_capture_channels;
144 } else {
145 runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
146 s = &efw->rx_stream;
147 pcm_channels = efw->pcm_playback_channels;
148 }
149
150
151 runtime->hw.rates = efw->supported_sampling_rate;
152 snd_pcm_limit_hw_rates(runtime);
153
154 limit_channels(&runtime->hw, pcm_channels);
155
156 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
157 hw_rule_channels, pcm_channels,
158 SNDRV_PCM_HW_PARAM_RATE, -1);
159 if (err < 0)
160 goto end;
161
162 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
163 hw_rule_rate, pcm_channels,
164 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
165 if (err < 0)
166 goto end;
167
168 err = amdtp_am824_add_pcm_hw_constraints(s, runtime);
169end:
170 return err;
171}
172
173static int pcm_open(struct snd_pcm_substream *substream)
174{
175 struct snd_efw *efw = substream->private_data;
176 struct amdtp_domain *d = &efw->domain;
177 enum snd_efw_clock_source clock_source;
178 int err;
179
180 err = snd_efw_stream_lock_try(efw);
181 if (err < 0)
182 return err;
183
184 err = pcm_init_hw_params(efw, substream);
185 if (err < 0)
186 goto err_locked;
187
188 err = snd_efw_command_get_clock_source(efw, &clock_source);
189 if (err < 0)
190 goto err_locked;
191
192 mutex_lock(&efw->mutex);
193
194
195
196
197 if ((clock_source != SND_EFW_CLOCK_SOURCE_INTERNAL) ||
198 (efw->substreams_counter > 0 && d->events_per_period > 0)) {
199 unsigned int frames_per_period = d->events_per_period;
200 unsigned int frames_per_buffer = d->events_per_buffer;
201 unsigned int sampling_rate;
202
203 err = snd_efw_command_get_sampling_rate(efw, &sampling_rate);
204 if (err < 0) {
205 mutex_unlock(&efw->mutex);
206 goto err_locked;
207 }
208 substream->runtime->hw.rate_min = sampling_rate;
209 substream->runtime->hw.rate_max = sampling_rate;
210
211 if (frames_per_period > 0) {
212 err = snd_pcm_hw_constraint_minmax(substream->runtime,
213 SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
214 frames_per_period, frames_per_period);
215 if (err < 0) {
216 mutex_unlock(&efw->mutex);
217 goto err_locked;
218 }
219
220 err = snd_pcm_hw_constraint_minmax(substream->runtime,
221 SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
222 frames_per_buffer, frames_per_buffer);
223 if (err < 0) {
224 mutex_unlock(&efw->mutex);
225 goto err_locked;
226 }
227 }
228 }
229
230 mutex_unlock(&efw->mutex);
231
232 snd_pcm_set_sync(substream);
233
234 return 0;
235err_locked:
236 snd_efw_stream_lock_release(efw);
237 return err;
238}
239
240static int pcm_close(struct snd_pcm_substream *substream)
241{
242 struct snd_efw *efw = substream->private_data;
243 snd_efw_stream_lock_release(efw);
244 return 0;
245}
246
247static int pcm_hw_params(struct snd_pcm_substream *substream,
248 struct snd_pcm_hw_params *hw_params)
249{
250 struct snd_efw *efw = substream->private_data;
251 int err = 0;
252
253 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
254 unsigned int rate = params_rate(hw_params);
255 unsigned int frames_per_period = params_period_size(hw_params);
256 unsigned int frames_per_buffer = params_buffer_size(hw_params);
257
258 mutex_lock(&efw->mutex);
259 err = snd_efw_stream_reserve_duplex(efw, rate,
260 frames_per_period, frames_per_buffer);
261 if (err >= 0)
262 ++efw->substreams_counter;
263 mutex_unlock(&efw->mutex);
264 }
265
266 return err;
267}
268
269static int pcm_hw_free(struct snd_pcm_substream *substream)
270{
271 struct snd_efw *efw = substream->private_data;
272
273 mutex_lock(&efw->mutex);
274
275 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
276 --efw->substreams_counter;
277
278 snd_efw_stream_stop_duplex(efw);
279
280 mutex_unlock(&efw->mutex);
281
282 return 0;
283}
284
285static int pcm_capture_prepare(struct snd_pcm_substream *substream)
286{
287 struct snd_efw *efw = substream->private_data;
288 int err;
289
290 err = snd_efw_stream_start_duplex(efw);
291 if (err >= 0)
292 amdtp_stream_pcm_prepare(&efw->tx_stream);
293
294 return err;
295}
296static int pcm_playback_prepare(struct snd_pcm_substream *substream)
297{
298 struct snd_efw *efw = substream->private_data;
299 int err;
300
301 err = snd_efw_stream_start_duplex(efw);
302 if (err >= 0)
303 amdtp_stream_pcm_prepare(&efw->rx_stream);
304
305 return err;
306}
307
308static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
309{
310 struct snd_efw *efw = substream->private_data;
311
312 switch (cmd) {
313 case SNDRV_PCM_TRIGGER_START:
314 amdtp_stream_pcm_trigger(&efw->tx_stream, substream);
315 break;
316 case SNDRV_PCM_TRIGGER_STOP:
317 amdtp_stream_pcm_trigger(&efw->tx_stream, NULL);
318 break;
319 default:
320 return -EINVAL;
321 }
322
323 return 0;
324}
325static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
326{
327 struct snd_efw *efw = substream->private_data;
328
329 switch (cmd) {
330 case SNDRV_PCM_TRIGGER_START:
331 amdtp_stream_pcm_trigger(&efw->rx_stream, substream);
332 break;
333 case SNDRV_PCM_TRIGGER_STOP:
334 amdtp_stream_pcm_trigger(&efw->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_efw *efw = sbstrm->private_data;
346
347 return amdtp_domain_stream_pcm_pointer(&efw->domain, &efw->tx_stream);
348}
349static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
350{
351 struct snd_efw *efw = sbstrm->private_data;
352
353 return amdtp_domain_stream_pcm_pointer(&efw->domain, &efw->rx_stream);
354}
355
356static int pcm_capture_ack(struct snd_pcm_substream *substream)
357{
358 struct snd_efw *efw = substream->private_data;
359
360 return amdtp_domain_stream_pcm_ack(&efw->domain, &efw->tx_stream);
361}
362
363static int pcm_playback_ack(struct snd_pcm_substream *substream)
364{
365 struct snd_efw *efw = substream->private_data;
366
367 return amdtp_domain_stream_pcm_ack(&efw->domain, &efw->rx_stream);
368}
369
370int snd_efw_create_pcm_devices(struct snd_efw *efw)
371{
372 static const struct snd_pcm_ops capture_ops = {
373 .open = pcm_open,
374 .close = pcm_close,
375 .hw_params = pcm_hw_params,
376 .hw_free = pcm_hw_free,
377 .prepare = pcm_capture_prepare,
378 .trigger = pcm_capture_trigger,
379 .pointer = pcm_capture_pointer,
380 .ack = pcm_capture_ack,
381 };
382 static const struct snd_pcm_ops playback_ops = {
383 .open = pcm_open,
384 .close = pcm_close,
385 .hw_params = pcm_hw_params,
386 .hw_free = pcm_hw_free,
387 .prepare = pcm_playback_prepare,
388 .trigger = pcm_playback_trigger,
389 .pointer = pcm_playback_pointer,
390 .ack = pcm_playback_ack,
391 };
392 struct snd_pcm *pcm;
393 int err;
394
395 err = snd_pcm_new(efw->card, efw->card->driver, 0, 1, 1, &pcm);
396 if (err < 0)
397 goto end;
398
399 pcm->private_data = efw;
400 snprintf(pcm->name, sizeof(pcm->name), "%s PCM", efw->card->shortname);
401 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
402 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
403 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
404end:
405 return err;
406}
407
408
