Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * motu-pcm.c - a part of driver for MOTU FireWire series
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <sound/pcm_params.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include "motu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) static int motu_rate_constraint(struct snd_pcm_hw_params *params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 				struct snd_pcm_hw_rule *rule)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 	struct snd_motu_packet_format *formats = rule->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 	const struct snd_interval *c =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	struct snd_interval *r =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 		hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	struct snd_interval rates = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 		.min = UINT_MAX, .max = 0, .integer = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	unsigned int i, pcm_channels, rate, mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 		rate = snd_motu_clock_rates[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		mode = i / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 		pcm_channels = formats->pcm_chunks[mode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 		if (!snd_interval_test(c, pcm_channels))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		rates.min = min(rates.min, rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		rates.max = max(rates.max, rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	return snd_interval_refine(r, &rates);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static int motu_channels_constraint(struct snd_pcm_hw_params *params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 				    struct snd_pcm_hw_rule *rule)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	struct snd_motu_packet_format *formats = rule->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	const struct snd_interval *r =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct snd_interval *c =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct snd_interval channels = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		.min = UINT_MAX, .max = 0, .integer = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	unsigned int i, pcm_channels, rate, mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		rate = snd_motu_clock_rates[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		mode = i / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		if (!snd_interval_test(r, rate))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		pcm_channels = formats->pcm_chunks[mode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		channels.min = min(channels.min, pcm_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		channels.max = max(channels.max, pcm_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	return snd_interval_refine(c, &channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) static void limit_channels_and_rates(struct snd_motu *motu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 				     struct snd_pcm_runtime *runtime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 				     struct snd_motu_packet_format *formats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	struct snd_pcm_hardware *hw = &runtime->hw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	unsigned int i, pcm_channels, rate, mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	hw->channels_min = UINT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	hw->channels_max = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		rate = snd_motu_clock_rates[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		mode = i / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		pcm_channels = formats->pcm_chunks[mode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		if (pcm_channels == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		hw->rates |= snd_pcm_rate_to_rate_bit(rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		hw->channels_min = min(hw->channels_min, pcm_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		hw->channels_max = max(hw->channels_max, pcm_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	snd_pcm_limit_hw_rates(runtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) static int init_hw_info(struct snd_motu *motu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	struct snd_pcm_runtime *runtime = substream->runtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	struct snd_pcm_hardware *hw = &runtime->hw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	struct amdtp_stream *stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	struct snd_motu_packet_format *formats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		hw->formats = SNDRV_PCM_FMTBIT_S32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		stream = &motu->tx_stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		formats = &motu->tx_packet_formats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		hw->formats = SNDRV_PCM_FMTBIT_S32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		stream = &motu->rx_stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		formats = &motu->rx_packet_formats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	limit_channels_and_rates(motu, runtime, formats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 				  motu_rate_constraint, formats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 				  motu_channels_constraint, formats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 				  SNDRV_PCM_HW_PARAM_RATE, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	return amdtp_motu_add_pcm_hw_constraints(stream, runtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static int pcm_open(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	struct amdtp_domain *d = &motu->domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	enum snd_motu_clock_source src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	err = snd_motu_stream_lock_try(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	mutex_lock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	err = snd_motu_stream_cache_packet_formats(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	err = init_hw_info(motu, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	err = snd_motu_protocol_get_clock_source(motu, &src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	// When source of clock is not internal or any stream is reserved for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	// transmission of PCM frames, the available sampling rate is limited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	// at current one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	if ((src != SND_MOTU_CLOCK_SOURCE_INTERNAL &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	     src != SND_MOTU_CLOCK_SOURCE_SPH) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	    (motu->substreams_counter > 0 && d->events_per_period > 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		unsigned int frames_per_period = d->events_per_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		unsigned int frames_per_buffer = d->events_per_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		unsigned int rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		err = snd_motu_protocol_get_clock_rate(motu, &rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 			goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		substream->runtime->hw.rate_min = rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		substream->runtime->hw.rate_max = rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		if (frames_per_period > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 					SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 					frames_per_period, frames_per_period);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 				goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 					SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 					frames_per_buffer, frames_per_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 			if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 				goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	snd_pcm_set_sync(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	mutex_unlock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) err_locked:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	mutex_unlock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	snd_motu_stream_lock_release(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static int pcm_close(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	snd_motu_stream_lock_release(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static int pcm_hw_params(struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			 struct snd_pcm_hw_params *hw_params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		unsigned int rate = params_rate(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		unsigned int frames_per_period = params_period_size(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		unsigned int frames_per_buffer = params_buffer_size(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		mutex_lock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		err = snd_motu_stream_reserve_duplex(motu, rate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 					frames_per_period, frames_per_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			++motu->substreams_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		mutex_unlock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static int pcm_hw_free(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	mutex_lock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		--motu->substreams_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	snd_motu_stream_stop_duplex(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	mutex_unlock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static int capture_prepare(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	mutex_lock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	err = snd_motu_stream_start_duplex(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	mutex_unlock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		amdtp_stream_pcm_prepare(&motu->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static int playback_prepare(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	mutex_lock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	err = snd_motu_stream_start_duplex(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	mutex_unlock(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		amdtp_stream_pcm_prepare(&motu->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	case SNDRV_PCM_TRIGGER_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		amdtp_stream_pcm_trigger(&motu->tx_stream, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	case SNDRV_PCM_TRIGGER_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		amdtp_stream_pcm_trigger(&motu->tx_stream, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static int playback_trigger(struct snd_pcm_substream *substream, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	case SNDRV_PCM_TRIGGER_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		amdtp_stream_pcm_trigger(&motu->rx_stream, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	case SNDRV_PCM_TRIGGER_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		amdtp_stream_pcm_trigger(&motu->rx_stream, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int capture_ack(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static int playback_ack(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	struct snd_motu *motu = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) int snd_motu_create_pcm_devices(struct snd_motu *motu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	static const struct snd_pcm_ops capture_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 		.open      = pcm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 		.close     = pcm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		.hw_params = pcm_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		.hw_free   = pcm_hw_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		.prepare   = capture_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		.trigger   = capture_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		.pointer   = capture_pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		.ack       = capture_ack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	static const struct snd_pcm_ops playback_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		.open      = pcm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		.close     = pcm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		.hw_params = pcm_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		.hw_free   = pcm_hw_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 		.prepare   = playback_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 		.trigger   = playback_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 		.pointer   = playback_pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		.ack       = playback_ack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	struct snd_pcm *pcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	err = snd_pcm_new(motu->card, motu->card->driver, 0, 1, 1, &pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	pcm->private_data = motu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	strcpy(pcm->name, motu->card->shortname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }