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450 lines
11 KiB
450 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* oxfw_pcm.c - a part of driver for OXFW970/971 based devices |
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* |
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* Copyright (c) Clemens Ladisch <[email protected]> |
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*/ |
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#include "oxfw.h" |
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static int hw_rule_rate(struct snd_pcm_hw_params *params, |
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struct snd_pcm_hw_rule *rule) |
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{ |
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u8 **formats = rule->private; |
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struct snd_interval *r = |
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hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
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const struct snd_interval *c = |
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hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
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struct snd_interval t = { |
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.min = UINT_MAX, .max = 0, .integer = 1 |
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}; |
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struct snd_oxfw_stream_formation formation; |
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int i, err; |
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for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { |
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if (formats[i] == NULL) |
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continue; |
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err = snd_oxfw_stream_parse_format(formats[i], &formation); |
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if (err < 0) |
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continue; |
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if (!snd_interval_test(c, formation.pcm)) |
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continue; |
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t.min = min(t.min, formation.rate); |
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t.max = max(t.max, formation.rate); |
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} |
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return snd_interval_refine(r, &t); |
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} |
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static int hw_rule_channels(struct snd_pcm_hw_params *params, |
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struct snd_pcm_hw_rule *rule) |
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{ |
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u8 **formats = rule->private; |
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struct snd_interval *c = |
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hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
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const struct snd_interval *r = |
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hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); |
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struct snd_oxfw_stream_formation formation; |
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int i, j, err; |
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unsigned int count, list[SND_OXFW_STREAM_FORMAT_ENTRIES] = {0}; |
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count = 0; |
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for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { |
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if (formats[i] == NULL) |
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break; |
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err = snd_oxfw_stream_parse_format(formats[i], &formation); |
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if (err < 0) |
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continue; |
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if (!snd_interval_test(r, formation.rate)) |
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continue; |
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if (list[count] == formation.pcm) |
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continue; |
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for (j = 0; j < ARRAY_SIZE(list); j++) { |
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if (list[j] == formation.pcm) |
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break; |
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} |
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if (j == ARRAY_SIZE(list)) { |
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list[count] = formation.pcm; |
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if (++count == ARRAY_SIZE(list)) |
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break; |
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} |
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} |
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return snd_interval_list(c, count, list, 0); |
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} |
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static void limit_channels_and_rates(struct snd_pcm_hardware *hw, u8 **formats) |
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{ |
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struct snd_oxfw_stream_formation formation; |
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int i, err; |
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hw->channels_min = UINT_MAX; |
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hw->channels_max = 0; |
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hw->rate_min = UINT_MAX; |
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hw->rate_max = 0; |
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hw->rates = 0; |
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for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { |
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if (formats[i] == NULL) |
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break; |
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err = snd_oxfw_stream_parse_format(formats[i], &formation); |
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if (err < 0) |
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continue; |
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hw->channels_min = min(hw->channels_min, formation.pcm); |
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hw->channels_max = max(hw->channels_max, formation.pcm); |
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hw->rate_min = min(hw->rate_min, formation.rate); |
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hw->rate_max = max(hw->rate_max, formation.rate); |
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hw->rates |= snd_pcm_rate_to_rate_bit(formation.rate); |
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} |
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} |
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static int init_hw_params(struct snd_oxfw *oxfw, |
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struct snd_pcm_substream *substream) |
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{ |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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u8 **formats; |
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struct amdtp_stream *stream; |
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int err; |
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if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { |
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runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS; |
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stream = &oxfw->tx_stream; |
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formats = oxfw->tx_stream_formats; |
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} else { |
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runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS; |
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stream = &oxfw->rx_stream; |
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formats = oxfw->rx_stream_formats; |
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} |
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limit_channels_and_rates(&runtime->hw, formats); |
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err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
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hw_rule_channels, formats, |
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SNDRV_PCM_HW_PARAM_RATE, -1); |
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if (err < 0) |
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goto end; |
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err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
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hw_rule_rate, formats, |
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SNDRV_PCM_HW_PARAM_CHANNELS, -1); |
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if (err < 0) |
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goto end; |
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err = amdtp_am824_add_pcm_hw_constraints(stream, runtime); |
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end: |
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return err; |
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} |
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static int limit_to_current_params(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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struct snd_oxfw_stream_formation formation; |
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enum avc_general_plug_dir dir; |
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int err; |
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if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
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dir = AVC_GENERAL_PLUG_DIR_OUT; |
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else |
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dir = AVC_GENERAL_PLUG_DIR_IN; |
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err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation); |
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if (err < 0) |
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goto end; |
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substream->runtime->hw.channels_min = formation.pcm; |
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substream->runtime->hw.channels_max = formation.pcm; |
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substream->runtime->hw.rate_min = formation.rate; |
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substream->runtime->hw.rate_max = formation.rate; |
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end: |
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return err; |
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} |
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static int pcm_open(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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struct amdtp_domain *d = &oxfw->domain; |
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int err; |
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err = snd_oxfw_stream_lock_try(oxfw); |
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if (err < 0) |
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return err; |
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err = init_hw_params(oxfw, substream); |
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if (err < 0) |
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goto err_locked; |
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mutex_lock(&oxfw->mutex); |
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// When source of clock is not internal or any stream is reserved for |
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// transmission of PCM frames, the available sampling rate is limited |
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// at current one. |
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if (oxfw->substreams_count > 0 && d->events_per_period > 0) { |
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unsigned int frames_per_period = d->events_per_period; |
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unsigned int frames_per_buffer = d->events_per_buffer; |
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err = limit_to_current_params(substream); |
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if (err < 0) { |
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mutex_unlock(&oxfw->mutex); |
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goto err_locked; |
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} |
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if (frames_per_period > 0) { |
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err = snd_pcm_hw_constraint_minmax(substream->runtime, |
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SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
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frames_per_period, frames_per_period); |
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if (err < 0) { |
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mutex_unlock(&oxfw->mutex); |
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goto err_locked; |
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} |
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err = snd_pcm_hw_constraint_minmax(substream->runtime, |
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SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
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frames_per_buffer, frames_per_buffer); |
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if (err < 0) { |
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mutex_unlock(&oxfw->mutex); |
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goto err_locked; |
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} |
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} |
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} |
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mutex_unlock(&oxfw->mutex); |
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snd_pcm_set_sync(substream); |
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return 0; |
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err_locked: |
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snd_oxfw_stream_lock_release(oxfw); |
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return err; |
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} |
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static int pcm_close(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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snd_oxfw_stream_lock_release(oxfw); |
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return 0; |
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} |
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static int pcm_capture_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *hw_params) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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int err = 0; |
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if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
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unsigned int rate = params_rate(hw_params); |
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unsigned int channels = params_channels(hw_params); |
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unsigned int frames_per_period = params_period_size(hw_params); |
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unsigned int frames_per_buffer = params_buffer_size(hw_params); |
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mutex_lock(&oxfw->mutex); |
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err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->tx_stream, |
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rate, channels, frames_per_period, |
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frames_per_buffer); |
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if (err >= 0) |
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++oxfw->substreams_count; |
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mutex_unlock(&oxfw->mutex); |
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} |
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return err; |
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} |
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static int pcm_playback_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *hw_params) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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int err = 0; |
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if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
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unsigned int rate = params_rate(hw_params); |
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unsigned int channels = params_channels(hw_params); |
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unsigned int frames_per_period = params_period_size(hw_params); |
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unsigned int frames_per_buffer = params_buffer_size(hw_params); |
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mutex_lock(&oxfw->mutex); |
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err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->rx_stream, |
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rate, channels, frames_per_period, |
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frames_per_buffer); |
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if (err >= 0) |
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++oxfw->substreams_count; |
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mutex_unlock(&oxfw->mutex); |
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} |
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return err; |
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} |
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static int pcm_capture_hw_free(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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mutex_lock(&oxfw->mutex); |
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if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) |
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--oxfw->substreams_count; |
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snd_oxfw_stream_stop_duplex(oxfw); |
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mutex_unlock(&oxfw->mutex); |
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return 0; |
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} |
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static int pcm_playback_hw_free(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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mutex_lock(&oxfw->mutex); |
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if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) |
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--oxfw->substreams_count; |
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snd_oxfw_stream_stop_duplex(oxfw); |
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mutex_unlock(&oxfw->mutex); |
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return 0; |
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} |
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static int pcm_capture_prepare(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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int err; |
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mutex_lock(&oxfw->mutex); |
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err = snd_oxfw_stream_start_duplex(oxfw); |
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mutex_unlock(&oxfw->mutex); |
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if (err < 0) |
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goto end; |
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amdtp_stream_pcm_prepare(&oxfw->tx_stream); |
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end: |
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return err; |
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} |
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static int pcm_playback_prepare(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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int err; |
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mutex_lock(&oxfw->mutex); |
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err = snd_oxfw_stream_start_duplex(oxfw); |
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mutex_unlock(&oxfw->mutex); |
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if (err < 0) |
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goto end; |
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amdtp_stream_pcm_prepare(&oxfw->rx_stream); |
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end: |
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return err; |
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} |
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static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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struct snd_pcm_substream *pcm; |
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switch (cmd) { |
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case SNDRV_PCM_TRIGGER_START: |
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pcm = substream; |
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break; |
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case SNDRV_PCM_TRIGGER_STOP: |
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pcm = NULL; |
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break; |
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default: |
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return -EINVAL; |
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} |
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amdtp_stream_pcm_trigger(&oxfw->tx_stream, pcm); |
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return 0; |
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} |
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static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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struct snd_pcm_substream *pcm; |
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switch (cmd) { |
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case SNDRV_PCM_TRIGGER_START: |
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pcm = substream; |
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break; |
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case SNDRV_PCM_TRIGGER_STOP: |
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pcm = NULL; |
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break; |
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default: |
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return -EINVAL; |
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} |
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amdtp_stream_pcm_trigger(&oxfw->rx_stream, pcm); |
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return 0; |
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} |
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static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstm) |
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{ |
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struct snd_oxfw *oxfw = sbstm->private_data; |
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return amdtp_domain_stream_pcm_pointer(&oxfw->domain, &oxfw->tx_stream); |
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} |
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static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstm) |
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{ |
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struct snd_oxfw *oxfw = sbstm->private_data; |
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return amdtp_domain_stream_pcm_pointer(&oxfw->domain, &oxfw->rx_stream); |
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} |
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static int pcm_capture_ack(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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return amdtp_domain_stream_pcm_ack(&oxfw->domain, &oxfw->tx_stream); |
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} |
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static int pcm_playback_ack(struct snd_pcm_substream *substream) |
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{ |
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struct snd_oxfw *oxfw = substream->private_data; |
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return amdtp_domain_stream_pcm_ack(&oxfw->domain, &oxfw->rx_stream); |
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} |
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int snd_oxfw_create_pcm(struct snd_oxfw *oxfw) |
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{ |
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static const struct snd_pcm_ops capture_ops = { |
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.open = pcm_open, |
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.close = pcm_close, |
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.hw_params = pcm_capture_hw_params, |
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.hw_free = pcm_capture_hw_free, |
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.prepare = pcm_capture_prepare, |
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.trigger = pcm_capture_trigger, |
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.pointer = pcm_capture_pointer, |
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.ack = pcm_capture_ack, |
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}; |
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static const struct snd_pcm_ops playback_ops = { |
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.open = pcm_open, |
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.close = pcm_close, |
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.hw_params = pcm_playback_hw_params, |
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.hw_free = pcm_playback_hw_free, |
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.prepare = pcm_playback_prepare, |
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.trigger = pcm_playback_trigger, |
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.pointer = pcm_playback_pointer, |
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.ack = pcm_playback_ack, |
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}; |
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struct snd_pcm *pcm; |
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unsigned int cap = 0; |
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int err; |
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if (oxfw->has_output) |
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cap = 1; |
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err = snd_pcm_new(oxfw->card, oxfw->card->driver, 0, 1, cap, &pcm); |
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if (err < 0) |
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return err; |
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pcm->private_data = oxfw; |
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strcpy(pcm->name, oxfw->card->shortname); |
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snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops); |
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if (cap > 0) |
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snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops); |
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snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0); |
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return 0; |
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}
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