2 * fireworks_pcm.c - a part of driver for Fireworks based devices
4 * Copyright (c) 2009-2010 Clemens Ladisch
5 * Copyright (c) 2013-2014 Takashi Sakamoto
7 * Licensed under the terms of the GNU General Public License, version 2.
9 #include "./fireworks.h"
13 * Fireworks changes its AMDTP channels for PCM data according to its sampling
14 * rate. There are three modes. Here _XX is either _rx or _tx.
15 * 0: 32.0- 48.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels applied
16 * 1: 88.2- 96.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_2x applied
17 * 2: 176.4-192.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_4x applied
19 * The number of PCM channels for analog input and output are always fixed but
20 * the number of PCM channels for digital input and output are differed.
22 * Additionally, according to "AudioFire Owner's Manual Version 2.2", in some
23 * model, the number of PCM channels for digital input has more restriction
24 * depending on which digital interface is selected.
25 * - S/PDIF coaxial and optical : use input 1-2
26 * - ADAT optical at 32.0-48.0 kHz : use input 1-8
27 * - ADAT optical at 88.2-96.0 kHz : use input 1-4 (S/MUX format)
29 * The data in AMDTP channels for blank PCM channels are zero.
31 static const unsigned int freq_table[] = {
32 /* multiplier mode 0 */
36 /* multiplier mode 1 */
39 /* multiplier mode 2 */
44 static inline unsigned int
45 get_multiplier_mode_with_index(unsigned int index)
47 return ((int)index - 1) / 2;
50 int snd_efw_get_multiplier_mode(unsigned int sampling_rate, unsigned int *mode)
54 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
55 if (freq_table[i] == sampling_rate) {
56 *mode = get_multiplier_mode_with_index(i);
65 hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
67 unsigned int *pcm_channels = rule->private;
68 struct snd_interval *r =
69 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
70 const struct snd_interval *c =
71 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
72 struct snd_interval t = {
73 .min = UINT_MAX, .max = 0, .integer = 1
77 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
78 mode = get_multiplier_mode_with_index(i);
79 if (!snd_interval_test(c, pcm_channels[mode]))
82 t.min = min(t.min, freq_table[i]);
83 t.max = max(t.max, freq_table[i]);
86 return snd_interval_refine(r, &t);
90 hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
92 unsigned int *pcm_channels = rule->private;
93 struct snd_interval *c =
94 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
95 const struct snd_interval *r =
96 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
97 struct snd_interval t = {
98 .min = UINT_MAX, .max = 0, .integer = 1
100 unsigned int i, mode;
102 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
103 mode = get_multiplier_mode_with_index(i);
104 if (!snd_interval_test(r, freq_table[i]))
107 t.min = min(t.min, pcm_channels[mode]);
108 t.max = max(t.max, pcm_channels[mode]);
111 return snd_interval_refine(c, &t);
115 limit_channels(struct snd_pcm_hardware *hw, unsigned int *pcm_channels)
117 unsigned int i, mode;
119 hw->channels_min = UINT_MAX;
120 hw->channels_max = 0;
122 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
123 mode = get_multiplier_mode_with_index(i);
124 if (pcm_channels[mode] == 0)
127 hw->channels_min = min(hw->channels_min, pcm_channels[mode]);
128 hw->channels_max = max(hw->channels_max, pcm_channels[mode]);
133 pcm_init_hw_params(struct snd_efw *efw,
134 struct snd_pcm_substream *substream)
136 struct snd_pcm_runtime *runtime = substream->runtime;
137 struct amdtp_stream *s;
138 unsigned int *pcm_channels;
141 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
142 runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
144 pcm_channels = efw->pcm_capture_channels;
146 runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
148 pcm_channels = efw->pcm_playback_channels;
152 runtime->hw.rates = efw->supported_sampling_rate,
153 snd_pcm_limit_hw_rates(runtime);
155 limit_channels(&runtime->hw, pcm_channels);
157 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
158 hw_rule_channels, pcm_channels,
159 SNDRV_PCM_HW_PARAM_RATE, -1);
163 err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
164 hw_rule_rate, pcm_channels,
165 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
169 err = amdtp_am824_add_pcm_hw_constraints(s, runtime);
174 static int pcm_open(struct snd_pcm_substream *substream)
176 struct snd_efw *efw = substream->private_data;
177 unsigned int sampling_rate;
178 enum snd_efw_clock_source clock_source;
181 err = snd_efw_stream_lock_try(efw);
185 err = pcm_init_hw_params(efw, substream);
189 err = snd_efw_command_get_clock_source(efw, &clock_source);
194 * When source of clock is not internal or any PCM streams are running,
195 * available sampling rate is limited at current sampling rate.
197 if ((clock_source != SND_EFW_CLOCK_SOURCE_INTERNAL) ||
198 amdtp_stream_pcm_running(&efw->tx_stream) ||
199 amdtp_stream_pcm_running(&efw->rx_stream)) {
200 err = snd_efw_command_get_sampling_rate(efw, &sampling_rate);
203 substream->runtime->hw.rate_min = sampling_rate;
204 substream->runtime->hw.rate_max = sampling_rate;
207 snd_pcm_set_sync(substream);
211 snd_efw_stream_lock_release(efw);
215 static int pcm_close(struct snd_pcm_substream *substream)
217 struct snd_efw *efw = substream->private_data;
218 snd_efw_stream_lock_release(efw);
222 static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
223 struct snd_pcm_hw_params *hw_params)
225 struct snd_efw *efw = substream->private_data;
228 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
229 params_buffer_bytes(hw_params));
233 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
234 mutex_lock(&efw->mutex);
235 efw->capture_substreams++;
236 mutex_unlock(&efw->mutex);
241 static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
242 struct snd_pcm_hw_params *hw_params)
244 struct snd_efw *efw = substream->private_data;
247 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
248 params_buffer_bytes(hw_params));
252 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
253 mutex_lock(&efw->mutex);
254 efw->playback_substreams++;
255 mutex_unlock(&efw->mutex);
261 static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
263 struct snd_efw *efw = substream->private_data;
265 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
266 mutex_lock(&efw->mutex);
267 efw->capture_substreams--;
268 mutex_unlock(&efw->mutex);
271 snd_efw_stream_stop_duplex(efw);
273 return snd_pcm_lib_free_vmalloc_buffer(substream);
275 static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
277 struct snd_efw *efw = substream->private_data;
279 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
280 mutex_lock(&efw->mutex);
281 efw->playback_substreams--;
282 mutex_unlock(&efw->mutex);
285 snd_efw_stream_stop_duplex(efw);
287 return snd_pcm_lib_free_vmalloc_buffer(substream);
290 static int pcm_capture_prepare(struct snd_pcm_substream *substream)
292 struct snd_efw *efw = substream->private_data;
293 struct snd_pcm_runtime *runtime = substream->runtime;
296 err = snd_efw_stream_start_duplex(efw, runtime->rate);
298 amdtp_stream_pcm_prepare(&efw->tx_stream);
302 static int pcm_playback_prepare(struct snd_pcm_substream *substream)
304 struct snd_efw *efw = substream->private_data;
305 struct snd_pcm_runtime *runtime = substream->runtime;
308 err = snd_efw_stream_start_duplex(efw, runtime->rate);
310 amdtp_stream_pcm_prepare(&efw->rx_stream);
315 static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
317 struct snd_efw *efw = substream->private_data;
320 case SNDRV_PCM_TRIGGER_START:
321 amdtp_stream_pcm_trigger(&efw->tx_stream, substream);
323 case SNDRV_PCM_TRIGGER_STOP:
324 amdtp_stream_pcm_trigger(&efw->tx_stream, NULL);
332 static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
334 struct snd_efw *efw = substream->private_data;
337 case SNDRV_PCM_TRIGGER_START:
338 amdtp_stream_pcm_trigger(&efw->rx_stream, substream);
340 case SNDRV_PCM_TRIGGER_STOP:
341 amdtp_stream_pcm_trigger(&efw->rx_stream, NULL);
350 static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
352 struct snd_efw *efw = sbstrm->private_data;
353 return amdtp_stream_pcm_pointer(&efw->tx_stream);
355 static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
357 struct snd_efw *efw = sbstrm->private_data;
358 return amdtp_stream_pcm_pointer(&efw->rx_stream);
361 static int pcm_capture_ack(struct snd_pcm_substream *substream)
363 struct snd_efw *efw = substream->private_data;
365 return amdtp_stream_pcm_ack(&efw->tx_stream);
368 static int pcm_playback_ack(struct snd_pcm_substream *substream)
370 struct snd_efw *efw = substream->private_data;
372 return amdtp_stream_pcm_ack(&efw->rx_stream);
375 int snd_efw_create_pcm_devices(struct snd_efw *efw)
377 static const struct snd_pcm_ops capture_ops = {
380 .ioctl = snd_pcm_lib_ioctl,
381 .hw_params = pcm_capture_hw_params,
382 .hw_free = pcm_capture_hw_free,
383 .prepare = pcm_capture_prepare,
384 .trigger = pcm_capture_trigger,
385 .pointer = pcm_capture_pointer,
386 .ack = pcm_capture_ack,
387 .page = snd_pcm_lib_get_vmalloc_page,
389 static const struct snd_pcm_ops playback_ops = {
392 .ioctl = snd_pcm_lib_ioctl,
393 .hw_params = pcm_playback_hw_params,
394 .hw_free = pcm_playback_hw_free,
395 .prepare = pcm_playback_prepare,
396 .trigger = pcm_playback_trigger,
397 .pointer = pcm_playback_pointer,
398 .ack = pcm_playback_ack,
399 .page = snd_pcm_lib_get_vmalloc_page,
404 err = snd_pcm_new(efw->card, efw->card->driver, 0, 1, 1, &pcm);
408 pcm->private_data = efw;
409 snprintf(pcm->name, sizeof(pcm->name), "%s PCM", efw->card->shortname);
410 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
411 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);