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 snd_sof_pcm *spcm; 139 int ret = 0; 140 141 spcm = snd_sof_find_spcm_dai(component, rtd); 142 if (!spcm) 143 return -EINVAL; 144 145 stream.hdr.size = sizeof(stream); 146 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE; 147 stream.comp_id = spcm->stream[cstream->direction].comp_id; 148 149 if (spcm->prepared[cstream->direction]) { 150 ret = sof_ipc_tx_message_no_reply(sdev->ipc, &stream, sizeof(stream)); 151 if (!ret) 152 spcm->prepared[cstream->direction] = false; 153 } 154 155 cancel_work_sync(&spcm->stream[cstream->direction].period_elapsed_work); 156 spcm->stream[cstream->direction].cstream = NULL; 157 kfree(sstream); 158 159 return ret; 160 } 161 162 static int sof_compr_set_params(struct snd_soc_component *component, 163 struct snd_compr_stream *cstream, struct snd_compr_params *params) 164 { 165 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 166 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 167 struct snd_compr_runtime *crtd = cstream->runtime; 168 struct sof_ipc_pcm_params_reply ipc_params_reply; 169 struct sof_ipc_fw_ready *ready = &sdev->fw_ready; 170 struct sof_ipc_fw_version *v = &ready->version; 171 struct sof_compr_stream *sstream; 172 struct sof_ipc_pcm_params *pcm; 173 struct snd_sof_pcm *spcm; 174 size_t ext_data_size; 175 int ret; 176 177 if (v->abi_version < SOF_ABI_VER(3, 22, 0)) { 178 dev_err(component->dev, 179 "Compress params not supported with FW ABI version %d:%d:%d\n", 180 SOF_ABI_VERSION_MAJOR(v->abi_version), 181 SOF_ABI_VERSION_MINOR(v->abi_version), 182 SOF_ABI_VERSION_PATCH(v->abi_version)); 183 return -EINVAL; 184 } 185 186 sstream = crtd->private_data; 187 188 spcm = snd_sof_find_spcm_dai(component, rtd); 189 190 if (!spcm) 191 return -EINVAL; 192 193 ext_data_size = sizeof(params->codec); 194 195 if (sizeof(*pcm) + ext_data_size > sdev->ipc->max_payload_size) 196 return -EINVAL; 197 198 pcm = kzalloc(sizeof(*pcm) + ext_data_size, GFP_KERNEL); 199 if (!pcm) 200 return -ENOMEM; 201 202 cstream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV_SG; 203 cstream->dma_buffer.dev.dev = sdev->dev; 204 ret = snd_compr_malloc_pages(cstream, crtd->buffer_size); 205 if (ret < 0) 206 goto out; 207 208 ret = create_page_table(component, cstream, crtd->dma_area, crtd->dma_bytes); 209 if (ret < 0) 210 goto out; 211 212 pcm->params.buffer.pages = PFN_UP(crtd->dma_bytes); 213 pcm->hdr.size = sizeof(*pcm) + ext_data_size; 214 pcm->hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS; 215 216 pcm->comp_id = spcm->stream[cstream->direction].comp_id; 217 pcm->params.hdr.size = sizeof(pcm->params) + ext_data_size; 218 pcm->params.buffer.phy_addr = spcm->stream[cstream->direction].page_table.addr; 219 pcm->params.buffer.size = crtd->dma_bytes; 220 pcm->params.direction = cstream->direction; 221 pcm->params.channels = params->codec.ch_out; 222 pcm->params.rate = params->codec.sample_rate; 223 pcm->params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED; 224 pcm->params.frame_fmt = SOF_IPC_FRAME_S32_LE; 225 pcm->params.sample_container_bytes = 226 snd_pcm_format_physical_width(SNDRV_PCM_FORMAT_S32) >> 3; 227 pcm->params.host_period_bytes = params->buffer.fragment_size; 228 pcm->params.ext_data_length = ext_data_size; 229 230 memcpy((u8 *)pcm->params.ext_data, ¶ms->codec, ext_data_size); 231 232 ret = sof_ipc_tx_message(sdev->ipc, pcm, sizeof(*pcm) + ext_data_size, 233 &ipc_params_reply, sizeof(ipc_params_reply)); 234 if (ret < 0) { 235 dev_err(component->dev, "error ipc failed\n"); 236 goto out; 237 } 238 239 ret = snd_sof_set_stream_data_offset(sdev, &spcm->stream[cstream->direction], 240 ipc_params_reply.posn_offset); 241 if (ret < 0) { 242 dev_err(component->dev, "Invalid stream data offset for Compr %d\n", 243 spcm->pcm.pcm_id); 244 goto out; 245 } 246 247 sstream->sampling_rate = params->codec.sample_rate; 248 sstream->channels = params->codec.ch_out; 249 sstream->sample_container_bytes = pcm->params.sample_container_bytes; 250 251 spcm->prepared[cstream->direction] = true; 252 253 out: 254 kfree(pcm); 255 256 return ret; 257 } 258 259 static int sof_compr_get_params(struct snd_soc_component *component, 260 struct snd_compr_stream *cstream, struct snd_codec *params) 261 { 262 /* TODO: we don't query the supported codecs for now, if the 263 * application asks for an unsupported codec the set_params() will fail. 264 */ 265 return 0; 266 } 267 268 static int sof_compr_trigger(struct snd_soc_component *component, 269 struct snd_compr_stream *cstream, int cmd) 270 { 271 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); 272 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 273 struct sof_ipc_stream stream; 274 struct snd_sof_pcm *spcm; 275 276 spcm = snd_sof_find_spcm_dai(component, rtd); 277 if (!spcm) 278 return -EINVAL; 279 280 stream.hdr.size = sizeof(stream); 281 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG; 282 stream.comp_id = spcm->stream[cstream->direction].comp_id; 283 284 switch (cmd) { 285 case SNDRV_PCM_TRIGGER_START: 286 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START; 287 break; 288 case SNDRV_PCM_TRIGGER_STOP: 289 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP; 290 break; 291 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 292 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE; 293 break; 294 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 295 stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE; 296 break; 297 default: 298 dev_err(component->dev, "error: unhandled trigger cmd %d\n", cmd); 299 break; 300 } 301 302 return sof_ipc_tx_message_no_reply(sdev->ipc, &stream, sizeof(stream)); 303 } 304 305 static int sof_compr_copy_playback(struct snd_compr_runtime *rtd, 306 char __user *buf, size_t count) 307 { 308 void *ptr; 309 unsigned int offset, n; 310 int ret; 311 312 div_u64_rem(rtd->total_bytes_available, rtd->buffer_size, &offset); 313 ptr = rtd->dma_area + offset; 314 n = rtd->buffer_size - offset; 315 316 if (count < n) { 317 ret = copy_from_user(ptr, buf, count); 318 } else { 319 ret = copy_from_user(ptr, buf, n); 320 ret += copy_from_user(rtd->dma_area, buf + n, count - n); 321 } 322 323 return count - ret; 324 } 325 326 static int sof_compr_copy_capture(struct snd_compr_runtime *rtd, 327 char __user *buf, size_t count) 328 { 329 void *ptr; 330 unsigned int offset, n; 331 int ret; 332 333 div_u64_rem(rtd->total_bytes_transferred, rtd->buffer_size, &offset); 334 ptr = rtd->dma_area + offset; 335 n = rtd->buffer_size - offset; 336 337 if (count < n) { 338 ret = copy_to_user(buf, ptr, count); 339 } else { 340 ret = copy_to_user(buf, ptr, n); 341 ret += copy_to_user(buf + n, rtd->dma_area, count - n); 342 } 343 344 return count - ret; 345 } 346 347 static int sof_compr_copy(struct snd_soc_component *component, 348 struct snd_compr_stream *cstream, 349 char __user *buf, size_t count) 350 { 351 struct snd_compr_runtime *rtd = cstream->runtime; 352 353 if (count > rtd->buffer_size) 354 count = rtd->buffer_size; 355 356 if (cstream->direction == SND_COMPRESS_PLAYBACK) 357 return sof_compr_copy_playback(rtd, buf, count); 358 else 359 return sof_compr_copy_capture(rtd, buf, count); 360 } 361 362 static int sof_compr_pointer(struct snd_soc_component *component, 363 struct snd_compr_stream *cstream, 364 struct snd_compr_tstamp *tstamp) 365 { 366 struct snd_sof_pcm *spcm; 367 struct snd_soc_pcm_runtime *rtd = cstream->private_data; 368 struct sof_compr_stream *sstream = cstream->runtime->private_data; 369 370 spcm = snd_sof_find_spcm_dai(component, rtd); 371 if (!spcm) 372 return -EINVAL; 373 374 tstamp->sampling_rate = sstream->sampling_rate; 375 tstamp->copied_total = sstream->copied_total; 376 tstamp->pcm_io_frames = div_u64(spcm->stream[cstream->direction].posn.dai_posn, 377 sstream->channels * sstream->sample_container_bytes); 378 379 return 0; 380 } 381 382 struct snd_compress_ops sof_compressed_ops = { 383 .open = sof_compr_open, 384 .free = sof_compr_free, 385 .set_params = sof_compr_set_params, 386 .get_params = sof_compr_get_params, 387 .trigger = sof_compr_trigger, 388 .pointer = sof_compr_pointer, 389 .copy = sof_compr_copy, 390 }; 391 EXPORT_SYMBOL(sof_compressed_ops); 392