1 /* SPDX-License-Identifier: GPL-2.0 2 * 3 * linux/sound/soc-dai.h -- ALSA SoC Layer 4 * 5 * Copyright: 2005-2008 Wolfson Microelectronics. PLC. 6 * 7 * Digital Audio Interface (DAI) API. 8 */ 9 10 #ifndef __LINUX_SND_SOC_DAI_H 11 #define __LINUX_SND_SOC_DAI_H 12 13 14 #include <linux/list.h> 15 #include <sound/asoc.h> 16 17 struct snd_pcm_substream; 18 struct snd_soc_dapm_widget; 19 struct snd_compr_stream; 20 21 /* 22 * DAI hardware audio formats. 23 * 24 * Describes the physical PCM data formating and clocking. Add new formats 25 * to the end. 26 */ 27 #define SND_SOC_DAIFMT_I2S SND_SOC_DAI_FORMAT_I2S 28 #define SND_SOC_DAIFMT_RIGHT_J SND_SOC_DAI_FORMAT_RIGHT_J 29 #define SND_SOC_DAIFMT_LEFT_J SND_SOC_DAI_FORMAT_LEFT_J 30 #define SND_SOC_DAIFMT_DSP_A SND_SOC_DAI_FORMAT_DSP_A 31 #define SND_SOC_DAIFMT_DSP_B SND_SOC_DAI_FORMAT_DSP_B 32 #define SND_SOC_DAIFMT_AC97 SND_SOC_DAI_FORMAT_AC97 33 #define SND_SOC_DAIFMT_PDM SND_SOC_DAI_FORMAT_PDM 34 35 /* left and right justified also known as MSB and LSB respectively */ 36 #define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J 37 #define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J 38 39 /* 40 * DAI Clock gating. 41 * 42 * DAI bit clocks can be be gated (disabled) when the DAI is not 43 * sending or receiving PCM data in a frame. This can be used to save power. 44 */ 45 #define SND_SOC_DAIFMT_CONT (1 << 4) /* continuous clock */ 46 #define SND_SOC_DAIFMT_GATED (0 << 4) /* clock is gated */ 47 48 /* 49 * DAI hardware signal polarity. 50 * 51 * Specifies whether the DAI can also support inverted clocks for the specified 52 * format. 53 * 54 * BCLK: 55 * - "normal" polarity means signal is available at rising edge of BCLK 56 * - "inverted" polarity means signal is available at falling edge of BCLK 57 * 58 * FSYNC "normal" polarity depends on the frame format: 59 * - I2S: frame consists of left then right channel data. Left channel starts 60 * with falling FSYNC edge, right channel starts with rising FSYNC edge. 61 * - Left/Right Justified: frame consists of left then right channel data. 62 * Left channel starts with rising FSYNC edge, right channel starts with 63 * falling FSYNC edge. 64 * - DSP A/B: Frame starts with rising FSYNC edge. 65 * - AC97: Frame starts with rising FSYNC edge. 66 * 67 * "Negative" FSYNC polarity is the one opposite of "normal" polarity. 68 */ 69 #define SND_SOC_DAIFMT_NB_NF (0 << 8) /* normal bit clock + frame */ 70 #define SND_SOC_DAIFMT_NB_IF (2 << 8) /* normal BCLK + inv FRM */ 71 #define SND_SOC_DAIFMT_IB_NF (3 << 8) /* invert BCLK + nor FRM */ 72 #define SND_SOC_DAIFMT_IB_IF (4 << 8) /* invert BCLK + FRM */ 73 74 /* 75 * DAI hardware clock masters. 76 * 77 * This is wrt the codec, the inverse is true for the interface 78 * i.e. if the codec is clk and FRM master then the interface is 79 * clk and frame slave. 80 */ 81 #define SND_SOC_DAIFMT_CBM_CFM (1 << 12) /* codec clk & FRM master */ 82 #define SND_SOC_DAIFMT_CBS_CFM (2 << 12) /* codec clk slave & FRM master */ 83 #define SND_SOC_DAIFMT_CBM_CFS (3 << 12) /* codec clk master & frame slave */ 84 #define SND_SOC_DAIFMT_CBS_CFS (4 << 12) /* codec clk & FRM slave */ 85 86 #define SND_SOC_DAIFMT_FORMAT_MASK 0x000f 87 #define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0 88 #define SND_SOC_DAIFMT_INV_MASK 0x0f00 89 #define SND_SOC_DAIFMT_MASTER_MASK 0xf000 90 91 /* 92 * Master Clock Directions 93 */ 94 #define SND_SOC_CLOCK_IN 0 95 #define SND_SOC_CLOCK_OUT 1 96 97 #define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S8 |\ 98 SNDRV_PCM_FMTBIT_S16_LE |\ 99 SNDRV_PCM_FMTBIT_S16_BE |\ 100 SNDRV_PCM_FMTBIT_S20_3LE |\ 101 SNDRV_PCM_FMTBIT_S20_3BE |\ 102 SNDRV_PCM_FMTBIT_S20_LE |\ 103 SNDRV_PCM_FMTBIT_S20_BE |\ 104 SNDRV_PCM_FMTBIT_S24_3LE |\ 105 SNDRV_PCM_FMTBIT_S24_3BE |\ 106 SNDRV_PCM_FMTBIT_S32_LE |\ 107 SNDRV_PCM_FMTBIT_S32_BE) 108 109 struct snd_soc_dai_driver; 110 struct snd_soc_dai; 111 struct snd_ac97_bus_ops; 112 113 /* Digital Audio Interface clocking API.*/ 114 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, 115 unsigned int freq, int dir); 116 117 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, 118 int div_id, int div); 119 120 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, 121 int pll_id, int source, unsigned int freq_in, unsigned int freq_out); 122 123 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio); 124 125 /* Digital Audio interface formatting */ 126 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt); 127 128 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, 129 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width); 130 131 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, 132 unsigned int tx_num, unsigned int *tx_slot, 133 unsigned int rx_num, unsigned int *rx_slot); 134 135 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate); 136 137 /* Digital Audio Interface mute */ 138 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute, 139 int direction); 140 141 142 int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai, 143 unsigned int *tx_num, unsigned int *tx_slot, 144 unsigned int *rx_num, unsigned int *rx_slot); 145 146 int snd_soc_dai_is_dummy(struct snd_soc_dai *dai); 147 148 int snd_soc_dai_hw_params(struct snd_soc_dai *dai, 149 struct snd_pcm_substream *substream, 150 struct snd_pcm_hw_params *params); 151 void snd_soc_dai_hw_free(struct snd_soc_dai *dai, 152 struct snd_pcm_substream *substream); 153 int snd_soc_dai_startup(struct snd_soc_dai *dai, 154 struct snd_pcm_substream *substream); 155 void snd_soc_dai_shutdown(struct snd_soc_dai *dai, 156 struct snd_pcm_substream *substream); 157 snd_pcm_sframes_t snd_soc_dai_delay(struct snd_soc_dai *dai, 158 struct snd_pcm_substream *substream); 159 void snd_soc_dai_suspend(struct snd_soc_dai *dai); 160 void snd_soc_dai_resume(struct snd_soc_dai *dai); 161 int snd_soc_dai_compress_new(struct snd_soc_dai *dai, 162 struct snd_soc_pcm_runtime *rtd, int num); 163 bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream); 164 void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link); 165 void snd_soc_dai_action(struct snd_soc_dai *dai, 166 int stream, int action); 167 static inline void snd_soc_dai_activate(struct snd_soc_dai *dai, 168 int stream) 169 { 170 snd_soc_dai_action(dai, stream, 1); 171 } 172 static inline void snd_soc_dai_deactivate(struct snd_soc_dai *dai, 173 int stream) 174 { 175 snd_soc_dai_action(dai, stream, -1); 176 } 177 int snd_soc_dai_active(struct snd_soc_dai *dai); 178 179 int snd_soc_pcm_dai_probe(struct snd_soc_pcm_runtime *rtd, int order); 180 int snd_soc_pcm_dai_remove(struct snd_soc_pcm_runtime *rtd, int order); 181 int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd); 182 int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream); 183 int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream, int cmd); 184 int snd_soc_pcm_dai_bespoke_trigger(struct snd_pcm_substream *substream, 185 int cmd); 186 187 int snd_soc_dai_compr_startup(struct snd_soc_dai *dai, 188 struct snd_compr_stream *cstream); 189 void snd_soc_dai_compr_shutdown(struct snd_soc_dai *dai, 190 struct snd_compr_stream *cstream); 191 int snd_soc_dai_compr_trigger(struct snd_soc_dai *dai, 192 struct snd_compr_stream *cstream, int cmd); 193 int snd_soc_dai_compr_set_params(struct snd_soc_dai *dai, 194 struct snd_compr_stream *cstream, 195 struct snd_compr_params *params); 196 int snd_soc_dai_compr_get_params(struct snd_soc_dai *dai, 197 struct snd_compr_stream *cstream, 198 struct snd_codec *params); 199 int snd_soc_dai_compr_ack(struct snd_soc_dai *dai, 200 struct snd_compr_stream *cstream, 201 size_t bytes); 202 int snd_soc_dai_compr_pointer(struct snd_soc_dai *dai, 203 struct snd_compr_stream *cstream, 204 struct snd_compr_tstamp *tstamp); 205 int snd_soc_dai_compr_set_metadata(struct snd_soc_dai *dai, 206 struct snd_compr_stream *cstream, 207 struct snd_compr_metadata *metadata); 208 int snd_soc_dai_compr_get_metadata(struct snd_soc_dai *dai, 209 struct snd_compr_stream *cstream, 210 struct snd_compr_metadata *metadata); 211 212 struct snd_soc_dai_ops { 213 /* 214 * DAI clocking configuration, all optional. 215 * Called by soc_card drivers, normally in their hw_params. 216 */ 217 int (*set_sysclk)(struct snd_soc_dai *dai, 218 int clk_id, unsigned int freq, int dir); 219 int (*set_pll)(struct snd_soc_dai *dai, int pll_id, int source, 220 unsigned int freq_in, unsigned int freq_out); 221 int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div); 222 int (*set_bclk_ratio)(struct snd_soc_dai *dai, unsigned int ratio); 223 224 /* 225 * DAI format configuration 226 * Called by soc_card drivers, normally in their hw_params. 227 */ 228 int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt); 229 int (*xlate_tdm_slot_mask)(unsigned int slots, 230 unsigned int *tx_mask, unsigned int *rx_mask); 231 int (*set_tdm_slot)(struct snd_soc_dai *dai, 232 unsigned int tx_mask, unsigned int rx_mask, 233 int slots, int slot_width); 234 int (*set_channel_map)(struct snd_soc_dai *dai, 235 unsigned int tx_num, unsigned int *tx_slot, 236 unsigned int rx_num, unsigned int *rx_slot); 237 int (*get_channel_map)(struct snd_soc_dai *dai, 238 unsigned int *tx_num, unsigned int *tx_slot, 239 unsigned int *rx_num, unsigned int *rx_slot); 240 int (*set_tristate)(struct snd_soc_dai *dai, int tristate); 241 242 int (*set_sdw_stream)(struct snd_soc_dai *dai, 243 void *stream, int direction); 244 void *(*get_sdw_stream)(struct snd_soc_dai *dai, int direction); 245 246 /* 247 * DAI digital mute - optional. 248 * Called by soc-core to minimise any pops. 249 */ 250 int (*digital_mute)(struct snd_soc_dai *dai, int mute); 251 int (*mute_stream)(struct snd_soc_dai *dai, int mute, int stream); 252 253 /* 254 * ALSA PCM audio operations - all optional. 255 * Called by soc-core during audio PCM operations. 256 */ 257 int (*startup)(struct snd_pcm_substream *, 258 struct snd_soc_dai *); 259 void (*shutdown)(struct snd_pcm_substream *, 260 struct snd_soc_dai *); 261 int (*hw_params)(struct snd_pcm_substream *, 262 struct snd_pcm_hw_params *, struct snd_soc_dai *); 263 int (*hw_free)(struct snd_pcm_substream *, 264 struct snd_soc_dai *); 265 int (*prepare)(struct snd_pcm_substream *, 266 struct snd_soc_dai *); 267 /* 268 * NOTE: Commands passed to the trigger function are not necessarily 269 * compatible with the current state of the dai. For example this 270 * sequence of commands is possible: START STOP STOP. 271 * So do not unconditionally use refcounting functions in the trigger 272 * function, e.g. clk_enable/disable. 273 */ 274 int (*trigger)(struct snd_pcm_substream *, int, 275 struct snd_soc_dai *); 276 int (*bespoke_trigger)(struct snd_pcm_substream *, int, 277 struct snd_soc_dai *); 278 /* 279 * For hardware based FIFO caused delay reporting. 280 * Optional. 281 */ 282 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *, 283 struct snd_soc_dai *); 284 }; 285 286 struct snd_soc_cdai_ops { 287 /* 288 * for compress ops 289 */ 290 int (*startup)(struct snd_compr_stream *, 291 struct snd_soc_dai *); 292 int (*shutdown)(struct snd_compr_stream *, 293 struct snd_soc_dai *); 294 int (*set_params)(struct snd_compr_stream *, 295 struct snd_compr_params *, struct snd_soc_dai *); 296 int (*get_params)(struct snd_compr_stream *, 297 struct snd_codec *, struct snd_soc_dai *); 298 int (*set_metadata)(struct snd_compr_stream *, 299 struct snd_compr_metadata *, struct snd_soc_dai *); 300 int (*get_metadata)(struct snd_compr_stream *, 301 struct snd_compr_metadata *, struct snd_soc_dai *); 302 int (*trigger)(struct snd_compr_stream *, int, 303 struct snd_soc_dai *); 304 int (*pointer)(struct snd_compr_stream *, 305 struct snd_compr_tstamp *, struct snd_soc_dai *); 306 int (*ack)(struct snd_compr_stream *, size_t, 307 struct snd_soc_dai *); 308 }; 309 310 /* 311 * Digital Audio Interface Driver. 312 * 313 * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97 314 * operations and capabilities. Codec and platform drivers will register this 315 * structure for every DAI they have. 316 * 317 * This structure covers the clocking, formating and ALSA operations for each 318 * interface. 319 */ 320 struct snd_soc_dai_driver { 321 /* DAI description */ 322 const char *name; 323 unsigned int id; 324 unsigned int base; 325 struct snd_soc_dobj dobj; 326 327 /* DAI driver callbacks */ 328 int (*probe)(struct snd_soc_dai *dai); 329 int (*remove)(struct snd_soc_dai *dai); 330 /* compress dai */ 331 int (*compress_new)(struct snd_soc_pcm_runtime *rtd, int num); 332 /* Optional Callback used at pcm creation*/ 333 int (*pcm_new)(struct snd_soc_pcm_runtime *rtd, 334 struct snd_soc_dai *dai); 335 336 /* ops */ 337 const struct snd_soc_dai_ops *ops; 338 const struct snd_soc_cdai_ops *cops; 339 340 /* DAI capabilities */ 341 struct snd_soc_pcm_stream capture; 342 struct snd_soc_pcm_stream playback; 343 unsigned int symmetric_rates:1; 344 unsigned int symmetric_channels:1; 345 unsigned int symmetric_samplebits:1; 346 347 /* probe ordering - for components with runtime dependencies */ 348 int probe_order; 349 int remove_order; 350 }; 351 352 /* 353 * Digital Audio Interface runtime data. 354 * 355 * Holds runtime data for a DAI. 356 */ 357 struct snd_soc_dai { 358 const char *name; 359 int id; 360 struct device *dev; 361 362 /* driver ops */ 363 struct snd_soc_dai_driver *driver; 364 365 /* DAI runtime info */ 366 unsigned int stream_active[SNDRV_PCM_STREAM_LAST + 1]; /* usage count */ 367 368 struct snd_soc_dapm_widget *playback_widget; 369 struct snd_soc_dapm_widget *capture_widget; 370 371 /* DAI DMA data */ 372 void *playback_dma_data; 373 void *capture_dma_data; 374 375 /* Symmetry data - only valid if symmetry is being enforced */ 376 unsigned int rate; 377 unsigned int channels; 378 unsigned int sample_bits; 379 380 /* parent platform/codec */ 381 struct snd_soc_component *component; 382 383 /* CODEC TDM slot masks and params (for fixup) */ 384 unsigned int tx_mask; 385 unsigned int rx_mask; 386 387 struct list_head list; 388 389 /* bit field */ 390 unsigned int probed:1; 391 }; 392 393 static inline struct snd_soc_pcm_stream * 394 snd_soc_dai_get_pcm_stream(const struct snd_soc_dai *dai, int stream) 395 { 396 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? 397 &dai->driver->playback : &dai->driver->capture; 398 } 399 400 static inline 401 struct snd_soc_dapm_widget *snd_soc_dai_get_widget( 402 struct snd_soc_dai *dai, int stream) 403 { 404 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? 405 dai->playback_widget : dai->capture_widget; 406 } 407 408 static inline void *snd_soc_dai_get_dma_data(const struct snd_soc_dai *dai, 409 const struct snd_pcm_substream *ss) 410 { 411 return (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) ? 412 dai->playback_dma_data : dai->capture_dma_data; 413 } 414 415 static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai *dai, 416 const struct snd_pcm_substream *ss, 417 void *data) 418 { 419 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) 420 dai->playback_dma_data = data; 421 else 422 dai->capture_dma_data = data; 423 } 424 425 static inline void snd_soc_dai_init_dma_data(struct snd_soc_dai *dai, 426 void *playback, void *capture) 427 { 428 dai->playback_dma_data = playback; 429 dai->capture_dma_data = capture; 430 } 431 432 static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai, 433 void *data) 434 { 435 dev_set_drvdata(dai->dev, data); 436 } 437 438 static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai) 439 { 440 return dev_get_drvdata(dai->dev); 441 } 442 443 /** 444 * snd_soc_dai_set_sdw_stream() - Configures a DAI for SDW stream operation 445 * @dai: DAI 446 * @stream: STREAM 447 * @direction: Stream direction(Playback/Capture) 448 * SoundWire subsystem doesn't have a notion of direction and we reuse 449 * the ASoC stream direction to configure sink/source ports. 450 * Playback maps to source ports and Capture for sink ports. 451 * 452 * This should be invoked with NULL to clear the stream set previously. 453 * Returns 0 on success, a negative error code otherwise. 454 */ 455 static inline int snd_soc_dai_set_sdw_stream(struct snd_soc_dai *dai, 456 void *stream, int direction) 457 { 458 if (dai->driver->ops->set_sdw_stream) 459 return dai->driver->ops->set_sdw_stream(dai, stream, direction); 460 else 461 return -ENOTSUPP; 462 } 463 464 /** 465 * snd_soc_dai_get_sdw_stream() - Retrieves SDW stream from DAI 466 * @dai: DAI 467 * @direction: Stream direction(Playback/Capture) 468 * 469 * This routine only retrieves that was previously configured 470 * with snd_soc_dai_get_sdw_stream() 471 * 472 * Returns pointer to stream or -ENOTSUPP if callback is not supported; 473 */ 474 static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai, 475 int direction) 476 { 477 if (dai->driver->ops->get_sdw_stream) 478 return dai->driver->ops->get_sdw_stream(dai, direction); 479 else 480 return ERR_PTR(-ENOTSUPP); 481 } 482 483 static inline unsigned int 484 snd_soc_dai_stream_active(struct snd_soc_dai *dai, int stream) 485 { 486 return dai->stream_active[stream]; 487 } 488 489 #endif 490