1 // SPDX-License-Identifier: GPL-2.0-only
3  * fireworks_pcm.c - a part of driver for Fireworks based devices
5  * Copyright (c) 2009-2010 Clemens Ladisch
6  * Copyright (c) 2013-2014 Takashi Sakamoto
12  * Fireworks changes its AMDTP channels for PCM data according to its sampling
14  *  0:  32.0- 48.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels applied
15  *  1:  88.2- 96.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_2x applied
16  *  2: 176.4-192.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_4x applied
18  * The number of PCM channels for analog input and output are always fixed but
19  * the number of PCM channels for digital input and output are differed.
22  * model, the number of PCM channels for digital input has more restriction
24  *  - S/PDIF coaxial and optical	: use input 1-2
25  *  - ADAT optical at 32.0-48.0 kHz	: use input 1-8
26  *  - ADAT optical at 88.2-96.0 kHz	: use input 1-4 (S/MUX format)
28  * The data in AMDTP channels for blank PCM channels are zero.
46 	return ((int)index - 1) / 2;  in get_multiplier_mode_with_index()
60 	return -EINVAL;  in snd_efw_get_multiplier_mode()
66 	unsigned int *pcm_channels = rule->private;  in hw_rule_rate()
91 	unsigned int *pcm_channels = rule->private;  in hw_rule_channels()
114 limit_channels(struct snd_pcm_hardware *hw, unsigned int *pcm_channels)  in limit_channels()  argument
118 	hw->channels_min = UINT_MAX;  in limit_channels()
119 	hw->channels_max = 0;  in limit_channels()
126 		hw->channels_min = min(hw->channels_min, pcm_channels[mode]);  in limit_channels()
127 		hw->channels_max = max(hw->channels_max, pcm_channels[mode]);  in limit_channels()
135 	struct snd_pcm_runtime *runtime = substream->runtime;  in pcm_init_hw_params()
140 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {  in pcm_init_hw_params()
141 		runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;  in pcm_init_hw_params()
142 		s = &efw->tx_stream;  in pcm_init_hw_params()
143 		pcm_channels = efw->pcm_capture_channels;  in pcm_init_hw_params()
145 		runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;  in pcm_init_hw_params()
146 		s = &efw->rx_stream;  in pcm_init_hw_params()
147 		pcm_channels = efw->pcm_playback_channels;  in pcm_init_hw_params()
151 	runtime->hw.rates = efw->supported_sampling_rate;  in pcm_init_hw_params()
154 	limit_channels(&runtime->hw, pcm_channels);  in pcm_init_hw_params()
158 				  SNDRV_PCM_HW_PARAM_RATE, -1);  in pcm_init_hw_params()
164 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);  in pcm_init_hw_params()
175 	struct snd_efw *efw = substream->private_data;  in pcm_open()
176 	struct amdtp_domain *d = &efw->domain;  in pcm_open()
192 	mutex_lock(&efw->mutex);  in pcm_open()
198 	    (efw->substreams_counter > 0 && d->events_per_period > 0)) {  in pcm_open()
199 		unsigned int frames_per_period = d->events_per_period;  in pcm_open()
200 		unsigned int frames_per_buffer = d->events_per_buffer;  in pcm_open()
205 			mutex_unlock(&efw->mutex);  in pcm_open()
208 		substream->runtime->hw.rate_min = sampling_rate;  in pcm_open()
209 		substream->runtime->hw.rate_max = sampling_rate;  in pcm_open()
212 			err = snd_pcm_hw_constraint_minmax(substream->runtime,  in pcm_open()
216 				mutex_unlock(&efw->mutex);  in pcm_open()
220 			err = snd_pcm_hw_constraint_minmax(substream->runtime,  in pcm_open()
224 				mutex_unlock(&efw->mutex);  in pcm_open()
230 	mutex_unlock(&efw->mutex);  in pcm_open()
242 	struct snd_efw *efw = substream->private_data;  in pcm_close()
250 	struct snd_efw *efw = substream->private_data;  in pcm_hw_params()
253 	if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) {  in pcm_hw_params()
258 		mutex_lock(&efw->mutex);  in pcm_hw_params()
262 			++efw->substreams_counter;  in pcm_hw_params()
263 		mutex_unlock(&efw->mutex);  in pcm_hw_params()
271 	struct snd_efw *efw = substream->private_data;  in pcm_hw_free()
273 	mutex_lock(&efw->mutex);  in pcm_hw_free()
275 	if (substream->runtime->state != SNDRV_PCM_STATE_OPEN)  in pcm_hw_free()
276 		--efw->substreams_counter;  in pcm_hw_free()
280 	mutex_unlock(&efw->mutex);  in pcm_hw_free()
287 	struct snd_efw *efw = substream->private_data;  in pcm_capture_prepare()
292 		amdtp_stream_pcm_prepare(&efw->tx_stream);  in pcm_capture_prepare()
298 	struct snd_efw *efw = substream->private_data;  in pcm_playback_prepare()
303 		amdtp_stream_pcm_prepare(&efw->rx_stream);  in pcm_playback_prepare()
310 	struct snd_efw *efw = substream->private_data;  in pcm_capture_trigger()
314 		amdtp_stream_pcm_trigger(&efw->tx_stream, substream);  in pcm_capture_trigger()
317 		amdtp_stream_pcm_trigger(&efw->tx_stream, NULL);  in pcm_capture_trigger()
320 		return -EINVAL;  in pcm_capture_trigger()
327 	struct snd_efw *efw = substream->private_data;  in pcm_playback_trigger()
331 		amdtp_stream_pcm_trigger(&efw->rx_stream, substream);  in pcm_playback_trigger()
334 		amdtp_stream_pcm_trigger(&efw->rx_stream, NULL);  in pcm_playback_trigger()
337 		return -EINVAL;  in pcm_playback_trigger()
345 	struct snd_efw *efw = sbstrm->private_data;  in pcm_capture_pointer()
347 	return amdtp_domain_stream_pcm_pointer(&efw->domain, &efw->tx_stream);  in pcm_capture_pointer()
351 	struct snd_efw *efw = sbstrm->private_data;  in pcm_playback_pointer()
353 	return amdtp_domain_stream_pcm_pointer(&efw->domain, &efw->rx_stream);  in pcm_playback_pointer()
358 	struct snd_efw *efw = substream->private_data;  in pcm_capture_ack()
360 	return amdtp_domain_stream_pcm_ack(&efw->domain, &efw->tx_stream);  in pcm_capture_ack()
365 	struct snd_efw *efw = substream->private_data;  in pcm_playback_ack()
367 	return amdtp_domain_stream_pcm_ack(&efw->domain, &efw->rx_stream);  in pcm_playback_ack()
395 	err = snd_pcm_new(efw->card, efw->card->driver, 0, 1, 1, &pcm);  in snd_efw_create_pcm_devices()
399 	pcm->private_data = efw;  in snd_efw_create_pcm_devices()
400 	pcm->nonatomic = true;  in snd_efw_create_pcm_devices()
401 	snprintf(pcm->name, sizeof(pcm->name), "%s PCM", efw->card->shortname);  in snd_efw_create_pcm_devices()