1 // SPDX-License-Identifier: GPL-2.0-only
3 * oxfw_pcm.c - a part of driver for OXFW970/971 based devices
5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
10 static int hw_rule_rate(struct snd_pcm_hw_params *params,
11 struct snd_pcm_hw_rule *rule)
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
21 struct snd_oxfw_stream_formation formation;
24 for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
25 if (formats[i] == NULL)
28 err = snd_oxfw_stream_parse_format(formats[i], &formation);
31 if (!snd_interval_test(c, formation.pcm))
34 t.min = min(t.min, formation.rate);
35 t.max = max(t.max, formation.rate);
38 return snd_interval_refine(r, &t);
41 static int hw_rule_channels(struct snd_pcm_hw_params *params,
42 struct snd_pcm_hw_rule *rule)
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;
51 unsigned int count, list[SND_OXFW_STREAM_FORMAT_ENTRIES] = {0};
54 for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
55 if (formats[i] == NULL)
58 err = snd_oxfw_stream_parse_format(formats[i], &formation);
61 if (!snd_interval_test(r, formation.rate))
63 if (list[count] == formation.pcm)
66 for (j = 0; j < ARRAY_SIZE(list); j++) {
67 if (list[j] == formation.pcm)
70 if (j == ARRAY_SIZE(list)) {
71 list[count] = formation.pcm;
72 if (++count == ARRAY_SIZE(list))
77 return snd_interval_list(c, count, list, 0);
80 static void limit_channels_and_rates(struct snd_pcm_hardware *hw, u8 **formats)
82 struct snd_oxfw_stream_formation formation;
85 hw->channels_min = UINT_MAX;
88 hw->rate_min = UINT_MAX;
92 for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
93 if (formats[i] == NULL)
96 err = snd_oxfw_stream_parse_format(formats[i], &formation);
100 hw->channels_min = min(hw->channels_min, formation.pcm);
101 hw->channels_max = max(hw->channels_max, formation.pcm);
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);
109 static int init_hw_params(struct snd_oxfw *oxfw,
110 struct snd_pcm_substream *substream)
112 struct snd_pcm_runtime *runtime = substream->runtime;
114 struct amdtp_stream *stream;
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;
122 runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
123 stream = &oxfw->rx_stream;
124 formats = oxfw->rx_stream_formats;
127 limit_channels_and_rates(&runtime->hw, formats);
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);
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);
141 err = amdtp_am824_add_pcm_hw_constraints(stream, runtime);
146 static int limit_to_current_params(struct snd_pcm_substream *substream)
148 struct snd_oxfw *oxfw = substream->private_data;
149 struct snd_oxfw_stream_formation formation;
150 enum avc_general_plug_dir dir;
153 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
154 dir = AVC_GENERAL_PLUG_DIR_OUT;
156 dir = AVC_GENERAL_PLUG_DIR_IN;
158 err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation);
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;
170 static int pcm_open(struct snd_pcm_substream *substream)
172 struct snd_oxfw *oxfw = substream->private_data;
175 err = snd_oxfw_stream_lock_try(oxfw);
179 err = init_hw_params(oxfw, substream);
184 * When any PCM streams are already running, the available sampling
185 * rate is limited at current value.
187 if (amdtp_stream_pcm_running(&oxfw->tx_stream) ||
188 amdtp_stream_pcm_running(&oxfw->rx_stream)) {
189 err = limit_to_current_params(substream);
194 snd_pcm_set_sync(substream);
198 snd_oxfw_stream_lock_release(oxfw);
202 static int pcm_close(struct snd_pcm_substream *substream)
204 struct snd_oxfw *oxfw = substream->private_data;
206 snd_oxfw_stream_lock_release(oxfw);
210 static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
211 struct snd_pcm_hw_params *hw_params)
213 struct snd_oxfw *oxfw = substream->private_data;
216 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
217 params_buffer_bytes(hw_params));
221 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
222 unsigned int rate = params_rate(hw_params);
223 unsigned int channels = params_channels(hw_params);
225 mutex_lock(&oxfw->mutex);
226 err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->tx_stream,
229 ++oxfw->substreams_count;
230 mutex_unlock(&oxfw->mutex);
235 static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
236 struct snd_pcm_hw_params *hw_params)
238 struct snd_oxfw *oxfw = substream->private_data;
241 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
242 params_buffer_bytes(hw_params));
246 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
247 unsigned int rate = params_rate(hw_params);
248 unsigned int channels = params_channels(hw_params);
250 mutex_lock(&oxfw->mutex);
251 err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->tx_stream,
254 ++oxfw->substreams_count;
255 mutex_unlock(&oxfw->mutex);
261 static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
263 struct snd_oxfw *oxfw = substream->private_data;
265 mutex_lock(&oxfw->mutex);
267 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
268 --oxfw->substreams_count;
270 snd_oxfw_stream_stop_duplex(oxfw);
272 mutex_unlock(&oxfw->mutex);
274 return snd_pcm_lib_free_vmalloc_buffer(substream);
276 static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
278 struct snd_oxfw *oxfw = substream->private_data;
280 mutex_lock(&oxfw->mutex);
282 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
283 --oxfw->substreams_count;
285 snd_oxfw_stream_stop_duplex(oxfw);
287 mutex_unlock(&oxfw->mutex);
289 return snd_pcm_lib_free_vmalloc_buffer(substream);
292 static int pcm_capture_prepare(struct snd_pcm_substream *substream)
294 struct snd_oxfw *oxfw = substream->private_data;
297 mutex_lock(&oxfw->mutex);
298 err = snd_oxfw_stream_start_duplex(oxfw);
299 mutex_unlock(&oxfw->mutex);
303 amdtp_stream_pcm_prepare(&oxfw->tx_stream);
307 static int pcm_playback_prepare(struct snd_pcm_substream *substream)
309 struct snd_oxfw *oxfw = substream->private_data;
312 mutex_lock(&oxfw->mutex);
313 err = snd_oxfw_stream_start_duplex(oxfw);
314 mutex_unlock(&oxfw->mutex);
318 amdtp_stream_pcm_prepare(&oxfw->rx_stream);
323 static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
325 struct snd_oxfw *oxfw = substream->private_data;
326 struct snd_pcm_substream *pcm;
329 case SNDRV_PCM_TRIGGER_START:
332 case SNDRV_PCM_TRIGGER_STOP:
338 amdtp_stream_pcm_trigger(&oxfw->tx_stream, pcm);
341 static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
343 struct snd_oxfw *oxfw = substream->private_data;
344 struct snd_pcm_substream *pcm;
347 case SNDRV_PCM_TRIGGER_START:
350 case SNDRV_PCM_TRIGGER_STOP:
356 amdtp_stream_pcm_trigger(&oxfw->rx_stream, pcm);
360 static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstm)
362 struct snd_oxfw *oxfw = sbstm->private_data;
364 return amdtp_stream_pcm_pointer(&oxfw->tx_stream);
366 static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstm)
368 struct snd_oxfw *oxfw = sbstm->private_data;
370 return amdtp_stream_pcm_pointer(&oxfw->rx_stream);
373 static int pcm_capture_ack(struct snd_pcm_substream *substream)
375 struct snd_oxfw *oxfw = substream->private_data;
377 return amdtp_stream_pcm_ack(&oxfw->tx_stream);
380 static int pcm_playback_ack(struct snd_pcm_substream *substream)
382 struct snd_oxfw *oxfw = substream->private_data;
384 return amdtp_stream_pcm_ack(&oxfw->rx_stream);
387 int snd_oxfw_create_pcm(struct snd_oxfw *oxfw)
389 static const struct snd_pcm_ops capture_ops = {
392 .ioctl = snd_pcm_lib_ioctl,
393 .hw_params = pcm_capture_hw_params,
394 .hw_free = pcm_capture_hw_free,
395 .prepare = pcm_capture_prepare,
396 .trigger = pcm_capture_trigger,
397 .pointer = pcm_capture_pointer,
398 .ack = pcm_capture_ack,
399 .page = snd_pcm_lib_get_vmalloc_page,
401 static const struct snd_pcm_ops playback_ops = {
404 .ioctl = snd_pcm_lib_ioctl,
405 .hw_params = pcm_playback_hw_params,
406 .hw_free = pcm_playback_hw_free,
407 .prepare = pcm_playback_prepare,
408 .trigger = pcm_playback_trigger,
409 .pointer = pcm_playback_pointer,
410 .ack = pcm_playback_ack,
411 .page = snd_pcm_lib_get_vmalloc_page,
414 unsigned int cap = 0;
417 if (oxfw->has_output)
420 err = snd_pcm_new(oxfw->card, oxfw->card->driver, 0, 1, cap, &pcm);
424 pcm->private_data = oxfw;
425 strcpy(pcm->name, oxfw->card->shortname);
426 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
428 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);