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![Takashi Sakamoto](/assets/img/avatar_default.png)
The second argument of snd_efw_command_get_sampling_rate() means sampling rate and its type is 'unsigned int'. But 'int' variable is passed as parameter. It's better to apply the same type for the variable as its argument. Similally, the type of variable for snd_efw_command_get_clock_source() and avc_bridgeco_get_plug_type() should be the same type as each argument. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
403 lines
11 KiB
C
403 lines
11 KiB
C
/*
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* fireworks_pcm.c - a part of driver for Fireworks based devices
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*
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* Copyright (c) 2009-2010 Clemens Ladisch
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* Copyright (c) 2013-2014 Takashi Sakamoto
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include "./fireworks.h"
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/*
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* NOTE:
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* Fireworks changes its AMDTP channels for PCM data according to its sampling
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* rate. There are three modes. Here _XX is either _rx or _tx.
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* 0: 32.0- 48.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels applied
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* 1: 88.2- 96.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_2x applied
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* 2: 176.4-192.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_4x applied
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*
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* The number of PCM channels for analog input and output are always fixed but
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* the number of PCM channels for digital input and output are differed.
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*
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* Additionally, according to "AudioFire Owner's Manual Version 2.2", in some
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* model, the number of PCM channels for digital input has more restriction
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* depending on which digital interface is selected.
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* - S/PDIF coaxial and optical : use input 1-2
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* - ADAT optical at 32.0-48.0 kHz : use input 1-8
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* - ADAT optical at 88.2-96.0 kHz : use input 1-4 (S/MUX format)
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*
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* The data in AMDTP channels for blank PCM channels are zero.
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*/
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static const unsigned int freq_table[] = {
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/* multiplier mode 0 */
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[0] = 32000,
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[1] = 44100,
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[2] = 48000,
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/* multiplier mode 1 */
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[3] = 88200,
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[4] = 96000,
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/* multiplier mode 2 */
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[5] = 176400,
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[6] = 192000,
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};
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static inline unsigned int
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get_multiplier_mode_with_index(unsigned int index)
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{
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return ((int)index - 1) / 2;
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}
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int snd_efw_get_multiplier_mode(unsigned int sampling_rate, unsigned int *mode)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
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if (freq_table[i] == sampling_rate) {
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*mode = get_multiplier_mode_with_index(i);
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return 0;
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}
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}
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return -EINVAL;
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}
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static int
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hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
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{
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unsigned int *pcm_channels = 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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unsigned int i, mode;
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for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
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mode = get_multiplier_mode_with_index(i);
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if (!snd_interval_test(c, pcm_channels[mode]))
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continue;
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t.min = min(t.min, freq_table[i]);
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t.max = max(t.max, freq_table[i]);
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}
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return snd_interval_refine(r, &t);
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}
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static int
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hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
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{
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unsigned int *pcm_channels = 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_interval t = {
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.min = UINT_MAX, .max = 0, .integer = 1
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};
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unsigned int i, mode;
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for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
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mode = get_multiplier_mode_with_index(i);
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if (!snd_interval_test(r, freq_table[i]))
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continue;
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t.min = min(t.min, pcm_channels[mode]);
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t.max = max(t.max, pcm_channels[mode]);
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}
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return snd_interval_refine(c, &t);
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}
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static void
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limit_channels(struct snd_pcm_hardware *hw, unsigned int *pcm_channels)
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{
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unsigned int i, mode;
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hw->channels_min = UINT_MAX;
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hw->channels_max = 0;
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for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
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mode = get_multiplier_mode_with_index(i);
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if (pcm_channels[mode] == 0)
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continue;
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hw->channels_min = min(hw->channels_min, pcm_channels[mode]);
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hw->channels_max = max(hw->channels_max, pcm_channels[mode]);
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}
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}
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static void
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limit_period_and_buffer(struct snd_pcm_hardware *hw)
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{
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hw->periods_min = 2; /* SNDRV_PCM_INFO_BATCH */
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hw->periods_max = UINT_MAX;
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hw->period_bytes_min = 4 * hw->channels_max; /* bytes for a frame */
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/* Just to prevent from allocating much pages. */
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hw->period_bytes_max = hw->period_bytes_min * 2048;
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hw->buffer_bytes_max = hw->period_bytes_max * hw->periods_min;
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}
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static int
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pcm_init_hw_params(struct snd_efw *efw,
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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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struct amdtp_stream *s;
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unsigned int *pcm_channels;
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int err;
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runtime->hw.info = SNDRV_PCM_INFO_BATCH |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_JOINT_DUPLEX |
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SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID;
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if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
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runtime->hw.formats = AMDTP_IN_PCM_FORMAT_BITS;
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s = &efw->tx_stream;
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pcm_channels = efw->pcm_capture_channels;
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} else {
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runtime->hw.formats = AMDTP_OUT_PCM_FORMAT_BITS;
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s = &efw->rx_stream;
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pcm_channels = efw->pcm_playback_channels;
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}
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/* limit rates */
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runtime->hw.rates = efw->supported_sampling_rate,
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snd_pcm_limit_hw_rates(runtime);
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limit_channels(&runtime->hw, pcm_channels);
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limit_period_and_buffer(&runtime->hw);
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err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
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hw_rule_channels, pcm_channels,
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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, pcm_channels,
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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_stream_add_pcm_hw_constraints(s, runtime);
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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_efw *efw = substream->private_data;
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unsigned int sampling_rate;
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enum snd_efw_clock_source clock_source;
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int err;
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err = snd_efw_stream_lock_try(efw);
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if (err < 0)
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goto end;
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err = pcm_init_hw_params(efw, substream);
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if (err < 0)
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goto err_locked;
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err = snd_efw_command_get_clock_source(efw, &clock_source);
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if (err < 0)
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goto err_locked;
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/*
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* When source of clock is not internal or any PCM streams are running,
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* available sampling rate is limited at current sampling rate.
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*/
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if ((clock_source != SND_EFW_CLOCK_SOURCE_INTERNAL) ||
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amdtp_stream_pcm_running(&efw->tx_stream) ||
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amdtp_stream_pcm_running(&efw->rx_stream)) {
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err = snd_efw_command_get_sampling_rate(efw, &sampling_rate);
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if (err < 0)
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goto err_locked;
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substream->runtime->hw.rate_min = sampling_rate;
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substream->runtime->hw.rate_max = sampling_rate;
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}
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snd_pcm_set_sync(substream);
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end:
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return err;
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err_locked:
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snd_efw_stream_lock_release(efw);
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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_efw *efw = substream->private_data;
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snd_efw_stream_lock_release(efw);
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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_efw *efw = substream->private_data;
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if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
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atomic_inc(&efw->capture_substreams);
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amdtp_stream_set_pcm_format(&efw->tx_stream, params_format(hw_params));
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return snd_pcm_lib_alloc_vmalloc_buffer(substream,
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params_buffer_bytes(hw_params));
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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_efw *efw = substream->private_data;
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if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
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atomic_inc(&efw->playback_substreams);
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amdtp_stream_set_pcm_format(&efw->rx_stream, params_format(hw_params));
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return snd_pcm_lib_alloc_vmalloc_buffer(substream,
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params_buffer_bytes(hw_params));
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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_efw *efw = substream->private_data;
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if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
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atomic_dec(&efw->capture_substreams);
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snd_efw_stream_stop_duplex(efw);
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return snd_pcm_lib_free_vmalloc_buffer(substream);
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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_efw *efw = substream->private_data;
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if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
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atomic_dec(&efw->playback_substreams);
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snd_efw_stream_stop_duplex(efw);
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return snd_pcm_lib_free_vmalloc_buffer(substream);
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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_efw *efw = substream->private_data;
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struct snd_pcm_runtime *runtime = substream->runtime;
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int err;
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err = snd_efw_stream_start_duplex(efw, runtime->rate);
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if (err >= 0)
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amdtp_stream_pcm_prepare(&efw->tx_stream);
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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_efw *efw = substream->private_data;
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struct snd_pcm_runtime *runtime = substream->runtime;
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int err;
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err = snd_efw_stream_start_duplex(efw, runtime->rate);
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if (err >= 0)
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amdtp_stream_pcm_prepare(&efw->rx_stream);
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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_efw *efw = substream->private_data;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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amdtp_stream_pcm_trigger(&efw->tx_stream, substream);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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amdtp_stream_pcm_trigger(&efw->tx_stream, 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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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_efw *efw = substream->private_data;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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amdtp_stream_pcm_trigger(&efw->rx_stream, substream);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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amdtp_stream_pcm_trigger(&efw->rx_stream, 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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return 0;
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}
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static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
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{
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struct snd_efw *efw = sbstrm->private_data;
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return amdtp_stream_pcm_pointer(&efw->tx_stream);
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}
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static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
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{
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struct snd_efw *efw = sbstrm->private_data;
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return amdtp_stream_pcm_pointer(&efw->rx_stream);
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}
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static const struct snd_pcm_ops pcm_capture_ops = {
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.open = pcm_open,
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.close = pcm_close,
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.ioctl = snd_pcm_lib_ioctl,
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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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.page = snd_pcm_lib_get_vmalloc_page,
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};
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static const struct snd_pcm_ops pcm_playback_ops = {
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.open = pcm_open,
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.close = pcm_close,
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.ioctl = snd_pcm_lib_ioctl,
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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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.page = snd_pcm_lib_get_vmalloc_page,
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.mmap = snd_pcm_lib_mmap_vmalloc,
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};
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int snd_efw_create_pcm_devices(struct snd_efw *efw)
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{
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struct snd_pcm *pcm;
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int err;
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err = snd_pcm_new(efw->card, efw->card->driver, 0, 1, 1, &pcm);
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if (err < 0)
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goto end;
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pcm->private_data = efw;
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snprintf(pcm->name, sizeof(pcm->name), "%s PCM", efw->card->shortname);
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snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
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snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
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end:
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return err;
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}
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