Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 1 | /* |
| 2 | * tascam-pcm.c - a part of driver for TASCAM FireWire series |
| 3 | * |
| 4 | * Copyright (c) 2015 Takashi Sakamoto |
| 5 | * |
| 6 | * Licensed under the terms of the GNU General Public License, version 2. |
| 7 | */ |
| 8 | |
| 9 | #include "tascam.h" |
| 10 | |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 11 | static int pcm_init_hw_params(struct snd_tscm *tscm, |
| 12 | struct snd_pcm_substream *substream) |
| 13 | { |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 14 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Sakamoto | 55799c5 | 2017-06-08 09:11:03 +0900 | [diff] [blame] | 15 | struct snd_pcm_hardware *hw = &runtime->hw; |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 16 | struct amdtp_stream *stream; |
| 17 | unsigned int pcm_channels; |
| 18 | |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 19 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { |
| 20 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; |
| 21 | stream = &tscm->tx_stream; |
| 22 | pcm_channels = tscm->spec->pcm_capture_analog_channels; |
| 23 | } else { |
Takashi Sakamoto | a02cb8f | 2017-05-22 22:22:21 +0900 | [diff] [blame] | 24 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 25 | stream = &tscm->rx_stream; |
| 26 | pcm_channels = tscm->spec->pcm_playback_analog_channels; |
| 27 | } |
| 28 | |
| 29 | if (tscm->spec->has_adat) |
| 30 | pcm_channels += 8; |
| 31 | if (tscm->spec->has_spdif) |
| 32 | pcm_channels += 2; |
| 33 | runtime->hw.channels_min = runtime->hw.channels_max = pcm_channels; |
| 34 | |
Takashi Sakamoto | 55799c5 | 2017-06-08 09:11:03 +0900 | [diff] [blame] | 35 | hw->rates = SNDRV_PCM_RATE_44100 | |
| 36 | SNDRV_PCM_RATE_48000 | |
| 37 | SNDRV_PCM_RATE_88200 | |
| 38 | SNDRV_PCM_RATE_96000; |
| 39 | snd_pcm_limit_hw_rates(runtime); |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 40 | |
| 41 | return amdtp_tscm_add_pcm_hw_constraints(stream, runtime); |
| 42 | } |
| 43 | |
| 44 | static int pcm_open(struct snd_pcm_substream *substream) |
| 45 | { |
| 46 | struct snd_tscm *tscm = substream->private_data; |
| 47 | enum snd_tscm_clock clock; |
| 48 | unsigned int rate; |
| 49 | int err; |
| 50 | |
Takashi Sakamoto | e5e0c3d | 2015-10-01 22:02:17 +0900 | [diff] [blame] | 51 | err = snd_tscm_stream_lock_try(tscm); |
| 52 | if (err < 0) |
| 53 | goto end; |
| 54 | |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 55 | err = pcm_init_hw_params(tscm, substream); |
| 56 | if (err < 0) |
Takashi Sakamoto | e5e0c3d | 2015-10-01 22:02:17 +0900 | [diff] [blame] | 57 | goto err_locked; |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 58 | |
| 59 | err = snd_tscm_stream_get_clock(tscm, &clock); |
| 60 | if (clock != SND_TSCM_CLOCK_INTERNAL || |
| 61 | amdtp_stream_pcm_running(&tscm->rx_stream) || |
| 62 | amdtp_stream_pcm_running(&tscm->tx_stream)) { |
| 63 | err = snd_tscm_stream_get_rate(tscm, &rate); |
| 64 | if (err < 0) |
Takashi Sakamoto | e5e0c3d | 2015-10-01 22:02:17 +0900 | [diff] [blame] | 65 | goto err_locked; |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 66 | substream->runtime->hw.rate_min = rate; |
| 67 | substream->runtime->hw.rate_max = rate; |
| 68 | } |
| 69 | |
| 70 | snd_pcm_set_sync(substream); |
Takashi Sakamoto | e5e0c3d | 2015-10-01 22:02:17 +0900 | [diff] [blame] | 71 | end: |
| 72 | return err; |
| 73 | err_locked: |
| 74 | snd_tscm_stream_lock_release(tscm); |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 75 | return err; |
| 76 | } |
| 77 | |
| 78 | static int pcm_close(struct snd_pcm_substream *substream) |
| 79 | { |
Takashi Sakamoto | e5e0c3d | 2015-10-01 22:02:17 +0900 | [diff] [blame] | 80 | struct snd_tscm *tscm = substream->private_data; |
| 81 | |
| 82 | snd_tscm_stream_lock_release(tscm); |
| 83 | |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | static int pcm_capture_hw_params(struct snd_pcm_substream *substream, |
| 88 | struct snd_pcm_hw_params *hw_params) |
| 89 | { |
| 90 | struct snd_tscm *tscm = substream->private_data; |
| 91 | int err; |
| 92 | |
| 93 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, |
| 94 | params_buffer_bytes(hw_params)); |
| 95 | if (err < 0) |
| 96 | return err; |
| 97 | |
| 98 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 99 | mutex_lock(&tscm->mutex); |
| 100 | tscm->substreams_counter++; |
| 101 | mutex_unlock(&tscm->mutex); |
| 102 | } |
| 103 | |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 104 | return 0; |
| 105 | } |
| 106 | |
| 107 | static int pcm_playback_hw_params(struct snd_pcm_substream *substream, |
| 108 | struct snd_pcm_hw_params *hw_params) |
| 109 | { |
| 110 | struct snd_tscm *tscm = substream->private_data; |
| 111 | int err; |
| 112 | |
| 113 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, |
| 114 | params_buffer_bytes(hw_params)); |
| 115 | if (err < 0) |
| 116 | return err; |
| 117 | |
| 118 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 119 | mutex_lock(&tscm->mutex); |
| 120 | tscm->substreams_counter++; |
| 121 | mutex_unlock(&tscm->mutex); |
| 122 | } |
| 123 | |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | static int pcm_capture_hw_free(struct snd_pcm_substream *substream) |
| 128 | { |
| 129 | struct snd_tscm *tscm = substream->private_data; |
| 130 | |
| 131 | mutex_lock(&tscm->mutex); |
| 132 | |
| 133 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) |
| 134 | tscm->substreams_counter--; |
| 135 | |
| 136 | snd_tscm_stream_stop_duplex(tscm); |
| 137 | |
| 138 | mutex_unlock(&tscm->mutex); |
| 139 | |
| 140 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
| 141 | } |
| 142 | |
| 143 | static int pcm_playback_hw_free(struct snd_pcm_substream *substream) |
| 144 | { |
| 145 | struct snd_tscm *tscm = substream->private_data; |
| 146 | |
| 147 | mutex_lock(&tscm->mutex); |
| 148 | |
| 149 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) |
| 150 | tscm->substreams_counter--; |
| 151 | |
| 152 | snd_tscm_stream_stop_duplex(tscm); |
| 153 | |
| 154 | mutex_unlock(&tscm->mutex); |
| 155 | |
| 156 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
| 157 | } |
| 158 | |
| 159 | static int pcm_capture_prepare(struct snd_pcm_substream *substream) |
| 160 | { |
| 161 | struct snd_tscm *tscm = substream->private_data; |
| 162 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 163 | int err; |
| 164 | |
| 165 | mutex_lock(&tscm->mutex); |
| 166 | |
| 167 | err = snd_tscm_stream_start_duplex(tscm, runtime->rate); |
| 168 | if (err >= 0) |
| 169 | amdtp_stream_pcm_prepare(&tscm->tx_stream); |
| 170 | |
| 171 | mutex_unlock(&tscm->mutex); |
| 172 | |
| 173 | return err; |
| 174 | } |
| 175 | |
| 176 | static int pcm_playback_prepare(struct snd_pcm_substream *substream) |
| 177 | { |
| 178 | struct snd_tscm *tscm = substream->private_data; |
| 179 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 180 | int err; |
| 181 | |
| 182 | mutex_lock(&tscm->mutex); |
| 183 | |
| 184 | err = snd_tscm_stream_start_duplex(tscm, runtime->rate); |
| 185 | if (err >= 0) |
| 186 | amdtp_stream_pcm_prepare(&tscm->rx_stream); |
| 187 | |
| 188 | mutex_unlock(&tscm->mutex); |
| 189 | |
| 190 | return err; |
| 191 | } |
| 192 | |
| 193 | static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) |
| 194 | { |
| 195 | struct snd_tscm *tscm = substream->private_data; |
| 196 | |
| 197 | switch (cmd) { |
| 198 | case SNDRV_PCM_TRIGGER_START: |
| 199 | amdtp_stream_pcm_trigger(&tscm->tx_stream, substream); |
| 200 | break; |
| 201 | case SNDRV_PCM_TRIGGER_STOP: |
| 202 | amdtp_stream_pcm_trigger(&tscm->tx_stream, NULL); |
| 203 | break; |
| 204 | default: |
| 205 | return -EINVAL; |
| 206 | } |
| 207 | |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) |
| 212 | { |
| 213 | struct snd_tscm *tscm = substream->private_data; |
| 214 | |
| 215 | switch (cmd) { |
| 216 | case SNDRV_PCM_TRIGGER_START: |
| 217 | amdtp_stream_pcm_trigger(&tscm->rx_stream, substream); |
| 218 | break; |
| 219 | case SNDRV_PCM_TRIGGER_STOP: |
| 220 | amdtp_stream_pcm_trigger(&tscm->rx_stream, NULL); |
| 221 | break; |
| 222 | default: |
| 223 | return -EINVAL; |
| 224 | } |
| 225 | |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) |
| 230 | { |
| 231 | struct snd_tscm *tscm = sbstrm->private_data; |
| 232 | |
| 233 | return amdtp_stream_pcm_pointer(&tscm->tx_stream); |
| 234 | } |
| 235 | |
| 236 | static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) |
| 237 | { |
| 238 | struct snd_tscm *tscm = sbstrm->private_data; |
| 239 | |
| 240 | return amdtp_stream_pcm_pointer(&tscm->rx_stream); |
| 241 | } |
| 242 | |
Takashi Sakamoto | 875becf | 2017-06-07 09:38:05 +0900 | [diff] [blame] | 243 | static int pcm_capture_ack(struct snd_pcm_substream *substream) |
| 244 | { |
| 245 | struct snd_tscm *tscm = substream->private_data; |
| 246 | |
| 247 | return amdtp_stream_pcm_ack(&tscm->tx_stream); |
| 248 | } |
| 249 | |
| 250 | static int pcm_playback_ack(struct snd_pcm_substream *substream) |
| 251 | { |
| 252 | struct snd_tscm *tscm = substream->private_data; |
| 253 | |
| 254 | return amdtp_stream_pcm_ack(&tscm->rx_stream); |
| 255 | } |
| 256 | |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 257 | int snd_tscm_create_pcm_devices(struct snd_tscm *tscm) |
| 258 | { |
Takashi Sakamoto | 9212823 | 2017-01-05 21:48:12 +0900 | [diff] [blame] | 259 | static const struct snd_pcm_ops capture_ops = { |
| 260 | .open = pcm_open, |
| 261 | .close = pcm_close, |
| 262 | .ioctl = snd_pcm_lib_ioctl, |
| 263 | .hw_params = pcm_capture_hw_params, |
| 264 | .hw_free = pcm_capture_hw_free, |
| 265 | .prepare = pcm_capture_prepare, |
| 266 | .trigger = pcm_capture_trigger, |
| 267 | .pointer = pcm_capture_pointer, |
Takashi Sakamoto | 875becf | 2017-06-07 09:38:05 +0900 | [diff] [blame] | 268 | .ack = pcm_capture_ack, |
Takashi Sakamoto | 9212823 | 2017-01-05 21:48:12 +0900 | [diff] [blame] | 269 | .page = snd_pcm_lib_get_vmalloc_page, |
| 270 | }; |
| 271 | static const struct snd_pcm_ops playback_ops = { |
| 272 | .open = pcm_open, |
| 273 | .close = pcm_close, |
| 274 | .ioctl = snd_pcm_lib_ioctl, |
| 275 | .hw_params = pcm_playback_hw_params, |
| 276 | .hw_free = pcm_playback_hw_free, |
| 277 | .prepare = pcm_playback_prepare, |
| 278 | .trigger = pcm_playback_trigger, |
| 279 | .pointer = pcm_playback_pointer, |
Takashi Sakamoto | 875becf | 2017-06-07 09:38:05 +0900 | [diff] [blame] | 280 | .ack = pcm_playback_ack, |
Takashi Sakamoto | 9212823 | 2017-01-05 21:48:12 +0900 | [diff] [blame] | 281 | .page = snd_pcm_lib_get_vmalloc_page, |
Takashi Sakamoto | 9212823 | 2017-01-05 21:48:12 +0900 | [diff] [blame] | 282 | }; |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 283 | struct snd_pcm *pcm; |
| 284 | int err; |
| 285 | |
| 286 | err = snd_pcm_new(tscm->card, tscm->card->driver, 0, 1, 1, &pcm); |
| 287 | if (err < 0) |
| 288 | return err; |
| 289 | |
| 290 | pcm->private_data = tscm; |
| 291 | snprintf(pcm->name, sizeof(pcm->name), |
| 292 | "%s PCM", tscm->card->shortname); |
Takashi Sakamoto | 9212823 | 2017-01-05 21:48:12 +0900 | [diff] [blame] | 293 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops); |
| 294 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops); |
Takashi Sakamoto | e453df4 | 2015-10-01 22:02:16 +0900 | [diff] [blame] | 295 | |
| 296 | return 0; |
| 297 | } |