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)  * bebob_pcm.c - a part of driver for BeBoB based devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2013-2014 Takashi Sakamoto
^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 "./bebob.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 	struct snd_bebob_stream_formation *formations = rule->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 	struct snd_interval *r =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 		hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
^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 t = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 		.min = UINT_MAX, .max = 0, .integer = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 		/* entry is invalid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 		if (formations[i].pcm == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 		if (!snd_interval_test(c, formations[i].pcm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		t.min = min(t.min, snd_bebob_rate_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		t.max = max(t.max, snd_bebob_rate_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	return snd_interval_refine(r, &t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	struct snd_bebob_stream_formation *formations = rule->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	struct snd_interval *c =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	const struct snd_interval *r =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	struct snd_interval t = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		.min = UINT_MAX, .max = 0, .integer = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		/* entry is invalid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		if (formations[i].pcm == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		if (!snd_interval_test(r, snd_bebob_rate_table[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		t.min = min(t.min, formations[i].pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		t.max = max(t.max, formations[i].pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	return snd_interval_refine(c, &t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) limit_channels_and_rates(struct snd_pcm_hardware *hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 			 struct snd_bebob_stream_formation *formations)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	hw->channels_min = UINT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	hw->channels_max = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	hw->rate_min = UINT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	hw->rate_max = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	hw->rates = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		/* entry has no PCM channels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		if (formations[i].pcm == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		hw->channels_min = min(hw->channels_min, formations[i].pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		hw->channels_max = max(hw->channels_max, formations[i].pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		hw->rate_min = min(hw->rate_min, snd_bebob_rate_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		hw->rate_max = max(hw->rate_max, snd_bebob_rate_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		hw->rates |= snd_pcm_rate_to_rate_bit(snd_bebob_rate_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) pcm_init_hw_params(struct snd_bebob *bebob,
^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 amdtp_stream *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	struct snd_bebob_stream_formation *formations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		s = &bebob->tx_stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		formations = bebob->tx_stream_formations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		s = &bebob->rx_stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		formations = bebob->rx_stream_formations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	limit_channels_and_rates(&runtime->hw, formations);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 				  hw_rule_channels, formations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 				  SNDRV_PCM_HW_PARAM_RATE, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 				  hw_rule_rate, formations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	err = amdtp_am824_add_pcm_hw_constraints(s, runtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static int pcm_open(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	const struct snd_bebob_rate_spec *spec = bebob->spec->rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	struct amdtp_domain *d = &bebob->domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	enum snd_bebob_clock_type src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	err = snd_bebob_stream_lock_try(bebob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	err = pcm_init_hw_params(bebob, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	err = snd_bebob_stream_get_clock_src(bebob, &src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	mutex_lock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	// When source of clock is not internal or any stream is reserved for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	// transmission of PCM frames, the available sampling rate is limited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	// at current one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	if (src == SND_BEBOB_CLOCK_TYPE_EXTERNAL ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	    (bebob->substreams_counter > 0 && d->events_per_period > 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		unsigned int frames_per_period = d->events_per_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		unsigned int frames_per_buffer = d->events_per_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		unsigned int sampling_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		err = spec->get(bebob, &sampling_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 			mutex_unlock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			dev_err(&bebob->unit->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 				"fail to get sampling rate: %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 			goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		substream->runtime->hw.rate_min = sampling_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		substream->runtime->hw.rate_max = sampling_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		if (frames_per_period > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 					SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 					frames_per_period, frames_per_period);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 				mutex_unlock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 				goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 					SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 					frames_per_buffer, frames_per_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 			if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 				mutex_unlock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 				goto err_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	mutex_unlock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	snd_pcm_set_sync(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) err_locked:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	snd_bebob_stream_lock_release(bebob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) pcm_close(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	snd_bebob_stream_lock_release(bebob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static int pcm_hw_params(struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			 struct snd_pcm_hw_params *hw_params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		unsigned int rate = params_rate(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		unsigned int frames_per_period = params_period_size(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		unsigned int frames_per_buffer = params_buffer_size(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		mutex_lock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		err = snd_bebob_stream_reserve_duplex(bebob, rate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 					frames_per_period, frames_per_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			++bebob->substreams_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		mutex_unlock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int pcm_hw_free(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	mutex_lock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		bebob->substreams_counter--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	snd_bebob_stream_stop_duplex(bebob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	mutex_unlock(&bebob->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) pcm_capture_prepare(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	err = snd_bebob_stream_start_duplex(bebob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		amdtp_stream_pcm_prepare(&bebob->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) pcm_playback_prepare(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	err = snd_bebob_stream_start_duplex(bebob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		amdtp_stream_pcm_prepare(&bebob->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	case SNDRV_PCM_TRIGGER_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		amdtp_stream_pcm_trigger(&bebob->tx_stream, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	case SNDRV_PCM_TRIGGER_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 		amdtp_stream_pcm_trigger(&bebob->tx_stream, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	case SNDRV_PCM_TRIGGER_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		amdtp_stream_pcm_trigger(&bebob->rx_stream, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	case SNDRV_PCM_TRIGGER_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		amdtp_stream_pcm_trigger(&bebob->rx_stream, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	struct snd_bebob *bebob = sbstrm->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	return amdtp_domain_stream_pcm_pointer(&bebob->domain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 					       &bebob->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	struct snd_bebob *bebob = sbstrm->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	return amdtp_domain_stream_pcm_pointer(&bebob->domain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 					       &bebob->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static int pcm_capture_ack(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	return amdtp_domain_stream_pcm_ack(&bebob->domain, &bebob->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static int pcm_playback_ack(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	struct snd_bebob *bebob = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	return amdtp_domain_stream_pcm_ack(&bebob->domain, &bebob->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) int snd_bebob_create_pcm_devices(struct snd_bebob *bebob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	static const struct snd_pcm_ops capture_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		.open		= pcm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		.close		= pcm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		.hw_params	= pcm_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		.hw_free	= pcm_hw_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		.prepare	= pcm_capture_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		.trigger	= pcm_capture_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		.pointer	= pcm_capture_pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		.ack		= pcm_capture_ack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	static const struct snd_pcm_ops playback_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 		.open		= pcm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		.close		= pcm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		.hw_params	= pcm_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 		.hw_free	= pcm_hw_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		.prepare	= pcm_playback_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 		.trigger	= pcm_playback_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		.pointer	= pcm_playback_pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		.ack		= pcm_playback_ack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	struct snd_pcm *pcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	err = snd_pcm_new(bebob->card, bebob->card->driver, 0, 1, 1, &pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 		goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	pcm->private_data = bebob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	snprintf(pcm->name, sizeof(pcm->name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 		 "%s PCM", bebob->card->shortname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }