1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // Copyright 2021 NXP 4 // 5 // Author: Daniel Baluta <daniel.baluta@nxp.com> 6 7 #include <sound/soc.h> 8 #include <sound/sof.h> 9 #include <sound/compress_driver.h> 10 #include "sof-audio.h" 11 #include "sof-priv.h" 12 #include "sof-utils.h" 13 #include "ops.h" 14 15 static void sof_set_transferred_bytes(struct sof_compr_stream *sstream, 16 u64 host_pos, u64 buffer_size) 17 { 18 u64 prev_pos; 19 unsigned int copied; 20 21 div64_u64_rem(sstream->copied_total, buffer_size, &prev_pos); 22 23 if (host_pos < prev_pos) 24 copied = (buffer_size - prev_pos) + host_pos; 25 else 26 copied = host_pos - prev_pos; 27 28 sstream->copied_total += copied; 29 } 30 31 static void snd_sof_compr_fragment_elapsed_work(struct work_struct *work) 32 { 33 struct snd_sof_pcm_stream *sps = 34 container_of(work, struct snd_sof_pcm_stream, 35 period_elapsed_work); 36 37 snd_compr_fragment_elapsed(sps->cstream); 38 } 39 40 void snd_sof_compr_init_elapsed_work(struct work_struct *work) 41 { 42 INIT_WORK(work, snd_sof_compr_fragment_elapsed_work); 43 } 44 45 /* 46 * sof compr fragment elapse, this could be called in irq thread context 47 */ 48 void snd_sof_compr_fragment_elapsed(struct snd_compr_stream *cstream) 49 { 50 struct snd_soc_pcm_runtime *rtd; 51 struct snd_compr_runtime *crtd; 52 struct snd_soc_component *component; 53 struct sof_compr_stream *sstream; 54 struct snd_sof_pcm *spcm; 55 56 if (!cstream) 57 return; 58 59 rtd = cstream->private_data; 60 crtd = cstream->runtime; 61 sstream = crtd->private_data; 62 component = snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME); 63 64 spcm = snd_sof_find_spcm_dai(component, rtd); 65 if (!spcm) { 66 dev_err(component->dev, 67 "fragment elapsed called for unknown stream!\n"); 68 return; 69 } 70 71 sof_set_transferred_bytes(sstream, spcm->stream[cstream->direction].posn.host_posn, 72 crtd->buffer_size); 73 74 /* use the same workqueue-based solution as for PCM, cf. snd_sof_pcm_elapsed */ 75 schedule_work(&spcm->stream[cstream->direction].period_elapsed_work); 76 } 77 78 static int create_page_table(struct snd_soc_component *component, 79 struct snd_compr_stream *cstream, 80 unsigned char *dma_area, size_t size) 81 { 82 struct snd_dma_buffer *dmab = cstream->runtime->dma_buffer_p; 83 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 84 int dir = cstream->direction; 85 struct snd_sof_pcm *spcm; 86 87 spcm = snd_sof_find_spcm_dai(component, rtd); 88 if (!spcm) 89 return -EINVAL; 90 91 return snd_sof_create_page_table(component->dev, dmab, 92 spcm->stream[dir].page_table.area, size); 93 } 94 95 static int sof_compr_open(struct snd_soc_component *component, 96 struct snd_compr_stream *cstream) 97 { 98 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 99 struct snd_compr_runtime *crtd = cstream->runtime; 100 struct sof_compr_stream *sstream; 101 struct snd_sof_pcm *spcm; 102 int dir; 103 104 sstream = kzalloc(sizeof(*sstream), GFP_KERNEL); 105 if (!sstream) 106 return -ENOMEM; 107 108 spcm = snd_sof_find_spcm_dai(component, rtd); 109 if (!spcm) { 110 kfree(sstream); 111 return -EINVAL; 112 } 113 114 dir = cstream->direction; 115 116 if (spcm->stream[dir].cstream) { 117 kfree(sstream); 118 return -EBUSY; 119 } 120 121 spcm->stream[dir].cstream = cstream; 122 spcm->stream[dir].posn.host_posn = 0; 123 spcm->stream[dir].posn.dai_posn = 0; 124 spcm->prepared[dir] = false; 125 126 crtd->private_data = sstream; 127 128 return 0; 129 } 130 131 static int sof_compr_free(struct snd_soc_component *component, 132 struct snd_compr_stream *cstream) 133 { 134 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 135 struct sof_compr_stream *sstream = cstream->runtime->private_data; 136 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 137 struct sof_ipc_stream stream; 138 struct sof_ipc_reply reply; 139 struct snd_sof_pcm *spcm; 140 int ret = 0; 141 142 spcm = snd_sof_find_spcm_dai(component, rtd); 143 if (!spcm) 144 return -EINVAL; 145 146 stream.hdr.size = sizeof(stream); 147 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; 148 stream.comp_id = spcm->stream[cstream->direction].comp_id; 149 150 if (spcm->prepared[cstream->direction]) { 151 ret = sof_ipc_tx_message(sdev->ipc, &stream, sizeof(stream), 152 &reply, sizeof(reply)); 153 if (!ret) 154 spcm->prepared[cstream->direction] = false; 155 } 156 157 cancel_work_sync(&spcm->stream[cstream->direction].period_elapsed_work); 158 spcm->stream[cstream->direction].cstream = NULL; 159 kfree(sstream); 160 161 return ret; 162 } 163 164 static int sof_compr_set_params(struct snd_soc_component *component, 165 struct snd_compr_stream *cstream, struct snd_compr_params *params) 166 { 167 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 168 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 169 struct snd_compr_runtime *crtd = cstream->runtime; 170 struct sof_ipc_pcm_params_reply ipc_params_reply; 171 struct sof_ipc_fw_ready *ready = &sdev->fw_ready; 172 struct sof_ipc_fw_version *v = &ready->version; 173 struct sof_compr_stream *sstream; 174 struct sof_ipc_pcm_params *pcm; 175 struct snd_sof_pcm *spcm; 176 size_t ext_data_size; 177 int ret; 178 179 if (v->abi_version < SOF_ABI_VER(3, 22, 0)) { 180 dev_err(component->dev, 181 "Compress params not supported with FW ABI version %d:%d:%d\n", 182 SOF_ABI_VERSION_MAJOR(v->abi_version), 183 SOF_ABI_VERSION_MINOR(v->abi_version), 184 SOF_ABI_VERSION_PATCH(v->abi_version)); 185 return -EINVAL; 186 } 187 188 sstream = crtd->private_data; 189 190 spcm = snd_sof_find_spcm_dai(component, rtd); 191 192 if (!spcm) 193 return -EINVAL; 194 195 ext_data_size = sizeof(params->codec); 196 197 if (sizeof(*pcm) + ext_data_size > sdev->ipc->max_payload_size) 198 return -EINVAL; 199 200 pcm = kzalloc(sizeof(*pcm) + ext_data_size, GFP_KERNEL); 201 if (!pcm) 202 return -ENOMEM; 203 204 cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG; 205 cstream->dma_buffer.dev.dev = sdev->dev; 206 ret = snd_compr_malloc_pages(cstream, crtd->buffer_size); 207 if (ret < 0) 208 goto out; 209 210 ret = create_page_table(component, cstream, crtd->dma_area, crtd->dma_bytes); 211 if (ret < 0) 212 goto out; 213 214 pcm->params.buffer.pages = PFN_UP(crtd->dma_bytes); 215 pcm->hdr.size = sizeof(*pcm) + ext_data_size; 216 pcm->hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS; 217 218 pcm->comp_id = spcm->stream[cstream->direction].comp_id; 219 pcm->params.hdr.size = sizeof(pcm->params) + ext_data_size; 220 pcm->params.buffer.phy_addr = spcm->stream[cstream->direction].page_table.addr; 221 pcm->params.buffer.size = crtd->dma_bytes; 222 pcm->params.direction = cstream->direction; 223 pcm->params.channels = params->codec.ch_out; 224 pcm->params.rate = params->codec.sample_rate; 225 pcm->params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED; 226 pcm->params.frame_fmt = SOF_IPC_FRAME_S32_LE; 227 pcm->params.sample_container_bytes = 228 snd_pcm_format_physical_width(SNDRV_PCM_FORMAT_S32) >> 3; 229 pcm->params.host_period_bytes = params->buffer.fragment_size; 230 pcm->params.ext_data_length = ext_data_size; 231 232 memcpy((u8 *)pcm->params.ext_data, ¶ms->codec, ext_data_size); 233 234 ret = sof_ipc_tx_message(sdev->ipc, pcm, sizeof(*pcm) + ext_data_size, 235 &ipc_params_reply, sizeof(ipc_params_reply)); 236 if (ret < 0) { 237 dev_err(component->dev, "error ipc failed\n"); 238 goto out; 239 } 240 241 ret = snd_sof_set_stream_data_offset(sdev, &spcm->stream[cstream->direction], 242 ipc_params_reply.posn_offset); 243 if (ret < 0) { 244 dev_err(component->dev, "Invalid stream data offset for Compr %d\n", 245 spcm->pcm.pcm_id); 246 goto out; 247 } 248 249 sstream->sampling_rate = params->codec.sample_rate; 250 sstream->channels = params->codec.ch_out; 251 sstream->sample_container_bytes = pcm->params.sample_container_bytes; 252 253 spcm->prepared[cstream->direction] = true; 254 255 out: 256 kfree(pcm); 257 258 return ret; 259 } 260 261 static int sof_compr_get_params(struct snd_soc_component *component, 262 struct snd_compr_stream *cstream, struct snd_codec *params) 263 { 264 /* TODO: we don't query the supported codecs for now, if the 265 * application asks for an unsupported codec the set_params() will fail. 266 */ 267 return 0; 268 } 269 270 static int sof_compr_trigger(struct snd_soc_component *component, 271 struct snd_compr_stream *cstream, int cmd) 272 { 273 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 274 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 275 struct sof_ipc_stream stream; 276 struct sof_ipc_reply reply; 277 struct snd_sof_pcm *spcm; 278 279 spcm = snd_sof_find_spcm_dai(component, rtd); 280 if (!spcm) 281 return -EINVAL; 282 283 stream.hdr.size = sizeof(stream); 284 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG; 285 stream.comp_id = spcm->stream[cstream->direction].comp_id; 286 287 switch (cmd) { 288 case SNDRV_PCM_TRIGGER_START: 289 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START; 290 break; 291 case SNDRV_PCM_TRIGGER_STOP: 292 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP; 293 break; 294 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 295 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE; 296 break; 297 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 298 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE; 299 break; 300 default: 301 dev_err(component->dev, "error: unhandled trigger cmd %d\n", cmd); 302 break; 303 } 304 305 return sof_ipc_tx_message(sdev->ipc, &stream, sizeof(stream), 306 &reply, sizeof(reply)); 307 } 308 309 static int sof_compr_copy_playback(struct snd_compr_runtime *rtd, 310 char __user *buf, size_t count) 311 { 312 void *ptr; 313 unsigned int offset, n; 314 int ret; 315 316 div_u64_rem(rtd->total_bytes_available, rtd->buffer_size, &offset); 317 ptr = rtd->dma_area + offset; 318 n = rtd->buffer_size - offset; 319 320 if (count < n) { 321 ret = copy_from_user(ptr, buf, count); 322 } else { 323 ret = copy_from_user(ptr, buf, n); 324 ret += copy_from_user(rtd->dma_area, buf + n, count - n); 325 } 326 327 return count - ret; 328 } 329 330 static int sof_compr_copy_capture(struct snd_compr_runtime *rtd, 331 char __user *buf, size_t count) 332 { 333 void *ptr; 334 unsigned int offset, n; 335 int ret; 336 337 div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset); 338 ptr = rtd->dma_area + offset; 339 n = rtd->buffer_size - offset; 340 341 if (count < n) { 342 ret = copy_to_user(buf, ptr, count); 343 } else { 344 ret = copy_to_user(buf, ptr, n); 345 ret += copy_to_user(buf + n, rtd->dma_area, count - n); 346 } 347 348 return count - ret; 349 } 350 351 static int sof_compr_copy(struct snd_soc_component *component, 352 struct snd_compr_stream *cstream, 353 char __user *buf, size_t count) 354 { 355 struct snd_compr_runtime *rtd = cstream->runtime; 356 357 if (count > rtd->buffer_size) 358 count = rtd->buffer_size; 359 360 if (cstream->direction == SND_COMPRESS_PLAYBACK) 361 return sof_compr_copy_playback(rtd, buf, count); 362 else 363 return sof_compr_copy_capture(rtd, buf, count); 364 } 365 366 static int sof_compr_pointer(struct snd_soc_component *component, 367 struct snd_compr_stream *cstream, 368 struct snd_compr_tstamp *tstamp) 369 { 370 struct snd_sof_pcm *spcm; 371 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 372 struct sof_compr_stream *sstream = cstream->runtime->private_data; 373 374 spcm = snd_sof_find_spcm_dai(component, rtd); 375 if (!spcm) 376 return -EINVAL; 377 378 tstamp->sampling_rate = sstream->sampling_rate; 379 tstamp->copied_total = sstream->copied_total; 380 tstamp->pcm_io_frames = div_u64(spcm->stream[cstream->direction].posn.dai_posn, 381 sstream->channels * sstream->sample_container_bytes); 382 383 return 0; 384 } 385 386 struct snd_compress_ops sof_compressed_ops = { 387 .open = sof_compr_open, 388 .free = sof_compr_free, 389 .set_params = sof_compr_set_params, 390 .get_params = sof_compr_get_params, 391 .trigger = sof_compr_trigger, 392 .pointer = sof_compr_pointer, 393 .copy = sof_compr_copy, 394 }; 395 EXPORT_SYMBOL(sof_compressed_ops); 396