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)  * ff-pcm.c - a part of driver for RME Fireface 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
^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 "ff.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) static int hw_rule_rate(struct snd_pcm_hw_params *params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 			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) 	const unsigned int *pcm_channels = 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 < ARRAY_SIZE(amdtp_rate_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 		enum snd_ff_stream_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 		int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		err = snd_ff_stream_get_multiplier_mode(i, &mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 		if (err < 0)
^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) 		if (!snd_interval_test(c, pcm_channels[mode]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		t.min = min(t.min, amdtp_rate_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 		t.max = max(t.max, amdtp_rate_table[i]);
^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) 	return snd_interval_refine(r, &t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) static int hw_rule_channels(struct snd_pcm_hw_params *params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 			    struct snd_pcm_hw_rule *rule)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	const unsigned int *pcm_channels = rule->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct snd_interval *c =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	const struct snd_interval *r =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct snd_interval t = {
^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;
^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(amdtp_rate_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		enum snd_ff_stream_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		err = snd_ff_stream_get_multiplier_mode(i, &mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		if (!snd_interval_test(r, amdtp_rate_table[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		t.min = min(t.min, pcm_channels[mode]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		t.max = max(t.max, pcm_channels[mode]);
^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) 	return snd_interval_refine(c, &t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) static void limit_channels_and_rates(struct snd_pcm_hardware *hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 				     const unsigned int *pcm_channels)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	unsigned int rate, channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	hw->channels_min = UINT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	hw->channels_max = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	hw->rate_min = UINT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	hw->rate_max = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		enum snd_ff_stream_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		err = snd_ff_stream_get_multiplier_mode(i, &mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		channels = pcm_channels[mode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		if (pcm_channels[mode] == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		hw->channels_min = min(hw->channels_min, channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		hw->channels_max = max(hw->channels_max, channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		rate = amdtp_rate_table[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		hw->rates |= snd_pcm_rate_to_rate_bit(rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		hw->rate_min = min(hw->rate_min, rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		hw->rate_max = max(hw->rate_max, rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int pcm_init_hw_params(struct snd_ff *ff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			      struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct snd_pcm_runtime *runtime = substream->runtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	struct amdtp_stream *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	const unsigned int *pcm_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		s = &ff->tx_stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		pcm_channels = ff->spec->pcm_capture_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		s = &ff->rx_stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		pcm_channels = ff->spec->pcm_playback_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	limit_channels_and_rates(&runtime->hw, pcm_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 				  hw_rule_channels, (void *)pcm_channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 				  SNDRV_PCM_HW_PARAM_RATE, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 				  hw_rule_rate, (void *)pcm_channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	return amdtp_ff_add_pcm_hw_constraints(s, runtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static int pcm_open(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	struct amdtp_domain *d = &ff->domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	unsigned int rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	enum snd_ff_clock_src src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	err = snd_ff_stream_lock_try(ff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	err = pcm_init_hw_params(ff, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		goto release_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	err = ff->spec->protocol->get_clock(ff, &rate, &src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		goto release_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	mutex_lock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	// When source of clock is not internal or any stream is reserved for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	// transmission of PCM frames, the available sampling rate is limited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	// at current one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	if (src != SND_FF_CLOCK_SRC_INTERNAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		for (i = 0; i < CIP_SFC_COUNT; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			if (amdtp_rate_table[i] == rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		// The unit is configured at sampling frequency which packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		// streaming engine can't support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		if (i >= CIP_SFC_COUNT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 			goto release_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		substream->runtime->hw.rate_min = rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		substream->runtime->hw.rate_max = rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		if (ff->substreams_counter > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 			unsigned int frames_per_period = d->events_per_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 			unsigned int frames_per_buffer = d->events_per_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 			rate = amdtp_rate_table[ff->rx_stream.sfc];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 			substream->runtime->hw.rate_min = rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 			substream->runtime->hw.rate_max = rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 					SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 					frames_per_period, frames_per_period);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 			if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 				mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 				goto release_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			err = snd_pcm_hw_constraint_minmax(substream->runtime,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 					SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 					frames_per_buffer, frames_per_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 				mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 				goto release_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		}
^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) 	mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	snd_pcm_set_sync(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) release_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	snd_ff_stream_lock_release(ff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static int pcm_close(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	snd_ff_stream_lock_release(ff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int pcm_hw_params(struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			 struct snd_pcm_hw_params *hw_params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		unsigned int rate = params_rate(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		unsigned int frames_per_period = params_period_size(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		unsigned int frames_per_buffer = params_buffer_size(hw_params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		mutex_lock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		err = snd_ff_stream_reserve_duplex(ff, rate, frames_per_period,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 						   frames_per_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 			++ff->substreams_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	return err;
^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 pcm_hw_free(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	mutex_lock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		--ff->substreams_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	snd_ff_stream_stop_duplex(ff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static int pcm_capture_prepare(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	struct snd_pcm_runtime *runtime = substream->runtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	mutex_lock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	err = snd_ff_stream_start_duplex(ff, runtime->rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		amdtp_stream_pcm_prepare(&ff->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static int pcm_playback_prepare(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	struct snd_pcm_runtime *runtime = substream->runtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	mutex_lock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	err = snd_ff_stream_start_duplex(ff, runtime->rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 		amdtp_stream_pcm_prepare(&ff->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	mutex_unlock(&ff->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	case SNDRV_PCM_TRIGGER_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		amdtp_stream_pcm_trigger(&ff->tx_stream, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	case SNDRV_PCM_TRIGGER_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		amdtp_stream_pcm_trigger(&ff->tx_stream, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	case SNDRV_PCM_TRIGGER_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		amdtp_stream_pcm_trigger(&ff->rx_stream, substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	case SNDRV_PCM_TRIGGER_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		amdtp_stream_pcm_trigger(&ff->rx_stream, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	struct snd_ff *ff = sbstrm->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	struct snd_ff *ff = sbstrm->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) static int pcm_capture_ack(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->tx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static int pcm_playback_ack(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	struct snd_ff *ff = substream->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->rx_stream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) int snd_ff_create_pcm_devices(struct snd_ff *ff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	static const struct snd_pcm_ops pcm_capture_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 		.open		= pcm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 		.close		= pcm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		.hw_params	= pcm_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		.hw_free	= pcm_hw_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 		.prepare	= pcm_capture_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 		.trigger	= pcm_capture_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		.pointer	= pcm_capture_pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		.ack		= pcm_capture_ack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	static const struct snd_pcm_ops pcm_playback_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 		.open		= pcm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 		.close		= pcm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 		.hw_params	= pcm_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 		.hw_free	= pcm_hw_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 		.prepare	= pcm_playback_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 		.trigger	= pcm_playback_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 		.pointer	= pcm_playback_pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 		.ack		= pcm_playback_ack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	struct snd_pcm *pcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	err = snd_pcm_new(ff->card, ff->card->driver, 0, 1, 1, &pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	pcm->private_data = ff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	snprintf(pcm->name, sizeof(pcm->name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 		 "%s PCM", ff->card->shortname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }