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 /* Describes the possible PCM format */ 40 /* 41 * use SND_SOC_DAI_FORMAT_xx as eash shift. 42 * see 43 * snd_soc_runtime_get_dai_fmt() 44 */ 45 #define SND_SOC_POSSIBLE_DAIFMT_FORMAT_SHIFT 0 46 #define SND_SOC_POSSIBLE_DAIFMT_FORMAT_MASK (0xFFFF << SND_SOC_POSSIBLE_DAIFMT_FORMAT_SHIFT) 47 #define SND_SOC_POSSIBLE_DAIFMT_I2S (1 << SND_SOC_DAI_FORMAT_I2S) 48 #define SND_SOC_POSSIBLE_DAIFMT_RIGHT_J (1 << SND_SOC_DAI_FORMAT_RIGHT_J) 49 #define SND_SOC_POSSIBLE_DAIFMT_LEFT_J (1 << SND_SOC_DAI_FORMAT_LEFT_J) 50 #define SND_SOC_POSSIBLE_DAIFMT_DSP_A (1 << SND_SOC_DAI_FORMAT_DSP_A) 51 #define SND_SOC_POSSIBLE_DAIFMT_DSP_B (1 << SND_SOC_DAI_FORMAT_DSP_B) 52 #define SND_SOC_POSSIBLE_DAIFMT_AC97 (1 << SND_SOC_DAI_FORMAT_AC97) 53 #define SND_SOC_POSSIBLE_DAIFMT_PDM (1 << SND_SOC_DAI_FORMAT_PDM) 54 55 /* 56 * DAI Clock gating. 57 * 58 * DAI bit clocks can be gated (disabled) when the DAI is not 59 * sending or receiving PCM data in a frame. This can be used to save power. 60 */ 61 #define SND_SOC_DAIFMT_CONT (1 << 4) /* continuous clock */ 62 #define SND_SOC_DAIFMT_GATED (0 << 4) /* clock is gated */ 63 64 /* Describes the possible PCM format */ 65 /* 66 * define GATED -> CONT. GATED will be selected if both are selected. 67 * see 68 * snd_soc_runtime_get_dai_fmt() 69 */ 70 #define SND_SOC_POSSIBLE_DAIFMT_CLOCK_SHIFT 16 71 #define SND_SOC_POSSIBLE_DAIFMT_CLOCK_MASK (0xFFFF << SND_SOC_POSSIBLE_DAIFMT_CLOCK_SHIFT) 72 #define SND_SOC_POSSIBLE_DAIFMT_GATED (0x1ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_SHIFT) 73 #define SND_SOC_POSSIBLE_DAIFMT_CONT (0x2ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_SHIFT) 74 75 /* 76 * DAI hardware signal polarity. 77 * 78 * Specifies whether the DAI can also support inverted clocks for the specified 79 * format. 80 * 81 * BCLK: 82 * - "normal" polarity means signal is available at rising edge of BCLK 83 * - "inverted" polarity means signal is available at falling edge of BCLK 84 * 85 * FSYNC "normal" polarity depends on the frame format: 86 * - I2S: frame consists of left then right channel data. Left channel starts 87 * with falling FSYNC edge, right channel starts with rising FSYNC edge. 88 * - Left/Right Justified: frame consists of left then right channel data. 89 * Left channel starts with rising FSYNC edge, right channel starts with 90 * falling FSYNC edge. 91 * - DSP A/B: Frame starts with rising FSYNC edge. 92 * - AC97: Frame starts with rising FSYNC edge. 93 * 94 * "Negative" FSYNC polarity is the one opposite of "normal" polarity. 95 */ 96 #define SND_SOC_DAIFMT_NB_NF (0 << 8) /* normal bit clock + frame */ 97 #define SND_SOC_DAIFMT_NB_IF (2 << 8) /* normal BCLK + inv FRM */ 98 #define SND_SOC_DAIFMT_IB_NF (3 << 8) /* invert BCLK + nor FRM */ 99 #define SND_SOC_DAIFMT_IB_IF (4 << 8) /* invert BCLK + FRM */ 100 101 /* Describes the possible PCM format */ 102 #define SND_SOC_POSSIBLE_DAIFMT_INV_SHIFT 32 103 #define SND_SOC_POSSIBLE_DAIFMT_INV_MASK (0xFFFFULL << SND_SOC_POSSIBLE_DAIFMT_INV_SHIFT) 104 #define SND_SOC_POSSIBLE_DAIFMT_NB_NF (0x1ULL << SND_SOC_POSSIBLE_DAIFMT_INV_SHIFT) 105 #define SND_SOC_POSSIBLE_DAIFMT_NB_IF (0x2ULL << SND_SOC_POSSIBLE_DAIFMT_INV_SHIFT) 106 #define SND_SOC_POSSIBLE_DAIFMT_IB_NF (0x4ULL << SND_SOC_POSSIBLE_DAIFMT_INV_SHIFT) 107 #define SND_SOC_POSSIBLE_DAIFMT_IB_IF (0x8ULL << SND_SOC_POSSIBLE_DAIFMT_INV_SHIFT) 108 109 /* 110 * DAI hardware clock providers/consumers 111 * 112 * This is wrt the codec, the inverse is true for the interface 113 * i.e. if the codec is clk and FRM provider then the interface is 114 * clk and frame consumer. 115 */ 116 #define SND_SOC_DAIFMT_CBP_CFP (1 << 12) /* codec clk provider & frame provider */ 117 #define SND_SOC_DAIFMT_CBC_CFP (2 << 12) /* codec clk consumer & frame provider */ 118 #define SND_SOC_DAIFMT_CBP_CFC (3 << 12) /* codec clk provider & frame consumer */ 119 #define SND_SOC_DAIFMT_CBC_CFC (4 << 12) /* codec clk consumer & frame consumer */ 120 121 /* previous definitions kept for backwards-compatibility, do not use in new contributions */ 122 #define SND_SOC_DAIFMT_CBM_CFM SND_SOC_DAIFMT_CBP_CFP 123 #define SND_SOC_DAIFMT_CBS_CFM SND_SOC_DAIFMT_CBC_CFP 124 #define SND_SOC_DAIFMT_CBM_CFS SND_SOC_DAIFMT_CBP_CFC 125 #define SND_SOC_DAIFMT_CBS_CFS SND_SOC_DAIFMT_CBC_CFC 126 127 /* when passed to set_fmt directly indicate if the device is provider or consumer */ 128 #define SND_SOC_DAIFMT_BP_FP SND_SOC_DAIFMT_CBP_CFP 129 #define SND_SOC_DAIFMT_BC_FP SND_SOC_DAIFMT_CBC_CFP 130 #define SND_SOC_DAIFMT_BP_FC SND_SOC_DAIFMT_CBP_CFC 131 #define SND_SOC_DAIFMT_BC_FC SND_SOC_DAIFMT_CBC_CFC 132 133 /* Describes the possible PCM format */ 134 #define SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT 48 135 #define SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_MASK (0xFFFFULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 136 #define SND_SOC_POSSIBLE_DAIFMT_CBP_CFP (0x1ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 137 #define SND_SOC_POSSIBLE_DAIFMT_CBC_CFP (0x2ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 138 #define SND_SOC_POSSIBLE_DAIFMT_CBP_CFC (0x4ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 139 #define SND_SOC_POSSIBLE_DAIFMT_CBC_CFC (0x8ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 140 141 #define SND_SOC_DAIFMT_FORMAT_MASK 0x000f 142 #define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0 143 #define SND_SOC_DAIFMT_INV_MASK 0x0f00 144 #define SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK 0xf000 145 146 #define SND_SOC_DAIFMT_MASTER_MASK SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK 147 148 /* 149 * Master Clock Directions 150 */ 151 #define SND_SOC_CLOCK_IN 0 152 #define SND_SOC_CLOCK_OUT 1 153 154 #define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S8 |\ 155 SNDRV_PCM_FMTBIT_S16_LE |\ 156 SNDRV_PCM_FMTBIT_S16_BE |\ 157 SNDRV_PCM_FMTBIT_S20_3LE |\ 158 SNDRV_PCM_FMTBIT_S20_3BE |\ 159 SNDRV_PCM_FMTBIT_S20_LE |\ 160 SNDRV_PCM_FMTBIT_S20_BE |\ 161 SNDRV_PCM_FMTBIT_S24_3LE |\ 162 SNDRV_PCM_FMTBIT_S24_3BE |\ 163 SNDRV_PCM_FMTBIT_S32_LE |\ 164 SNDRV_PCM_FMTBIT_S32_BE) 165 166 struct snd_soc_dai_driver; 167 struct snd_soc_dai; 168 struct snd_ac97_bus_ops; 169 170 /* Digital Audio Interface clocking API.*/ 171 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, 172 unsigned int freq, int dir); 173 174 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, 175 int div_id, int div); 176 177 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, 178 int pll_id, int source, unsigned int freq_in, unsigned int freq_out); 179 180 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio); 181 182 /* Digital Audio interface formatting */ 183 int snd_soc_dai_get_fmt_max_priority(struct snd_soc_pcm_runtime *rtd); 184 u64 snd_soc_dai_get_fmt(struct snd_soc_dai *dai, int priority); 185 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt); 186 187 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, 188 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width); 189 190 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, 191 unsigned int tx_num, unsigned int *tx_slot, 192 unsigned int rx_num, unsigned int *rx_slot); 193 194 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate); 195 196 /* Digital Audio Interface mute */ 197 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute, 198 int direction); 199 200 201 int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai, 202 unsigned int *tx_num, unsigned int *tx_slot, 203 unsigned int *rx_num, unsigned int *rx_slot); 204 205 int snd_soc_dai_is_dummy(struct snd_soc_dai *dai); 206 207 int snd_soc_dai_hw_params(struct snd_soc_dai *dai, 208 struct snd_pcm_substream *substream, 209 struct snd_pcm_hw_params *params); 210 void snd_soc_dai_hw_free(struct snd_soc_dai *dai, 211 struct snd_pcm_substream *substream, 212 int rollback); 213 int snd_soc_dai_startup(struct snd_soc_dai *dai, 214 struct snd_pcm_substream *substream); 215 void snd_soc_dai_shutdown(struct snd_soc_dai *dai, 216 struct snd_pcm_substream *substream, int rollback); 217 void snd_soc_dai_suspend(struct snd_soc_dai *dai); 218 void snd_soc_dai_resume(struct snd_soc_dai *dai); 219 int snd_soc_dai_compress_new(struct snd_soc_dai *dai, 220 struct snd_soc_pcm_runtime *rtd, int num); 221 bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream); 222 void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link); 223 void snd_soc_dai_action(struct snd_soc_dai *dai, 224 int stream, int action); 225 static inline void snd_soc_dai_activate(struct snd_soc_dai *dai, 226 int stream) 227 { 228 snd_soc_dai_action(dai, stream, 1); 229 } 230 static inline void snd_soc_dai_deactivate(struct snd_soc_dai *dai, 231 int stream) 232 { 233 snd_soc_dai_action(dai, stream, -1); 234 } 235 int snd_soc_dai_active(struct snd_soc_dai *dai); 236 237 int snd_soc_pcm_dai_probe(struct snd_soc_pcm_runtime *rtd, int order); 238 int snd_soc_pcm_dai_remove(struct snd_soc_pcm_runtime *rtd, int order); 239 int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd); 240 int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream); 241 int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream, int cmd, 242 int rollback); 243 int snd_soc_pcm_dai_bespoke_trigger(struct snd_pcm_substream *substream, 244 int cmd); 245 void snd_soc_pcm_dai_delay(struct snd_pcm_substream *substream, 246 snd_pcm_sframes_t *cpu_delay, snd_pcm_sframes_t *codec_delay); 247 248 int snd_soc_dai_compr_startup(struct snd_soc_dai *dai, 249 struct snd_compr_stream *cstream); 250 void snd_soc_dai_compr_shutdown(struct snd_soc_dai *dai, 251 struct snd_compr_stream *cstream, 252 int rollback); 253 int snd_soc_dai_compr_trigger(struct snd_soc_dai *dai, 254 struct snd_compr_stream *cstream, int cmd); 255 int snd_soc_dai_compr_set_params(struct snd_soc_dai *dai, 256 struct snd_compr_stream *cstream, 257 struct snd_compr_params *params); 258 int snd_soc_dai_compr_get_params(struct snd_soc_dai *dai, 259 struct snd_compr_stream *cstream, 260 struct snd_codec *params); 261 int snd_soc_dai_compr_ack(struct snd_soc_dai *dai, 262 struct snd_compr_stream *cstream, 263 size_t bytes); 264 int snd_soc_dai_compr_pointer(struct snd_soc_dai *dai, 265 struct snd_compr_stream *cstream, 266 struct snd_compr_tstamp *tstamp); 267 int snd_soc_dai_compr_set_metadata(struct snd_soc_dai *dai, 268 struct snd_compr_stream *cstream, 269 struct snd_compr_metadata *metadata); 270 int snd_soc_dai_compr_get_metadata(struct snd_soc_dai *dai, 271 struct snd_compr_stream *cstream, 272 struct snd_compr_metadata *metadata); 273 274 struct snd_soc_dai_ops { 275 /* 276 * DAI clocking configuration, all optional. 277 * Called by soc_card drivers, normally in their hw_params. 278 */ 279 int (*set_sysclk)(struct snd_soc_dai *dai, 280 int clk_id, unsigned int freq, int dir); 281 int (*set_pll)(struct snd_soc_dai *dai, int pll_id, int source, 282 unsigned int freq_in, unsigned int freq_out); 283 int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div); 284 int (*set_bclk_ratio)(struct snd_soc_dai *dai, unsigned int ratio); 285 286 /* 287 * DAI format configuration 288 * Called by soc_card drivers, normally in their hw_params. 289 */ 290 int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt); 291 int (*xlate_tdm_slot_mask)(unsigned int slots, 292 unsigned int *tx_mask, unsigned int *rx_mask); 293 int (*set_tdm_slot)(struct snd_soc_dai *dai, 294 unsigned int tx_mask, unsigned int rx_mask, 295 int slots, int slot_width); 296 int (*set_channel_map)(struct snd_soc_dai *dai, 297 unsigned int tx_num, unsigned int *tx_slot, 298 unsigned int rx_num, unsigned int *rx_slot); 299 int (*get_channel_map)(struct snd_soc_dai *dai, 300 unsigned int *tx_num, unsigned int *tx_slot, 301 unsigned int *rx_num, unsigned int *rx_slot); 302 int (*set_tristate)(struct snd_soc_dai *dai, int tristate); 303 304 int (*set_stream)(struct snd_soc_dai *dai, 305 void *stream, int direction); 306 void *(*get_stream)(struct snd_soc_dai *dai, int direction); 307 308 /* 309 * DAI digital mute - optional. 310 * Called by soc-core to minimise any pops. 311 */ 312 int (*mute_stream)(struct snd_soc_dai *dai, int mute, int stream); 313 314 /* 315 * ALSA PCM audio operations - all optional. 316 * Called by soc-core during audio PCM operations. 317 */ 318 int (*startup)(struct snd_pcm_substream *, 319 struct snd_soc_dai *); 320 void (*shutdown)(struct snd_pcm_substream *, 321 struct snd_soc_dai *); 322 int (*hw_params)(struct snd_pcm_substream *, 323 struct snd_pcm_hw_params *, struct snd_soc_dai *); 324 int (*hw_free)(struct snd_pcm_substream *, 325 struct snd_soc_dai *); 326 int (*prepare)(struct snd_pcm_substream *, 327 struct snd_soc_dai *); 328 /* 329 * NOTE: Commands passed to the trigger function are not necessarily 330 * compatible with the current state of the dai. For example this 331 * sequence of commands is possible: START STOP STOP. 332 * So do not unconditionally use refcounting functions in the trigger 333 * function, e.g. clk_enable/disable. 334 */ 335 int (*trigger)(struct snd_pcm_substream *, int, 336 struct snd_soc_dai *); 337 int (*bespoke_trigger)(struct snd_pcm_substream *, int, 338 struct snd_soc_dai *); 339 /* 340 * For hardware based FIFO caused delay reporting. 341 * Optional. 342 */ 343 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *, 344 struct snd_soc_dai *); 345 346 /* 347 * Format list for auto selection. 348 * Format will be increased if priority format was 349 * not selected. 350 * see 351 * snd_soc_dai_get_fmt() 352 */ 353 u64 *auto_selectable_formats; 354 int num_auto_selectable_formats; 355 356 /* bit field */ 357 unsigned int no_capture_mute:1; 358 }; 359 360 struct snd_soc_cdai_ops { 361 /* 362 * for compress ops 363 */ 364 int (*startup)(struct snd_compr_stream *, 365 struct snd_soc_dai *); 366 int (*shutdown)(struct snd_compr_stream *, 367 struct snd_soc_dai *); 368 int (*set_params)(struct snd_compr_stream *, 369 struct snd_compr_params *, struct snd_soc_dai *); 370 int (*get_params)(struct snd_compr_stream *, 371 struct snd_codec *, struct snd_soc_dai *); 372 int (*set_metadata)(struct snd_compr_stream *, 373 struct snd_compr_metadata *, struct snd_soc_dai *); 374 int (*get_metadata)(struct snd_compr_stream *, 375 struct snd_compr_metadata *, struct snd_soc_dai *); 376 int (*trigger)(struct snd_compr_stream *, int, 377 struct snd_soc_dai *); 378 int (*pointer)(struct snd_compr_stream *, 379 struct snd_compr_tstamp *, struct snd_soc_dai *); 380 int (*ack)(struct snd_compr_stream *, size_t, 381 struct snd_soc_dai *); 382 }; 383 384 /* 385 * Digital Audio Interface Driver. 386 * 387 * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97 388 * operations and capabilities. Codec and platform drivers will register this 389 * structure for every DAI they have. 390 * 391 * This structure covers the clocking, formating and ALSA operations for each 392 * interface. 393 */ 394 struct snd_soc_dai_driver { 395 /* DAI description */ 396 const char *name; 397 unsigned int id; 398 unsigned int base; 399 struct snd_soc_dobj dobj; 400 401 /* DAI driver callbacks */ 402 int (*probe)(struct snd_soc_dai *dai); 403 int (*remove)(struct snd_soc_dai *dai); 404 /* compress dai */ 405 int (*compress_new)(struct snd_soc_pcm_runtime *rtd, int num); 406 /* Optional Callback used at pcm creation*/ 407 int (*pcm_new)(struct snd_soc_pcm_runtime *rtd, 408 struct snd_soc_dai *dai); 409 410 /* ops */ 411 const struct snd_soc_dai_ops *ops; 412 const struct snd_soc_cdai_ops *cops; 413 414 /* DAI capabilities */ 415 struct snd_soc_pcm_stream capture; 416 struct snd_soc_pcm_stream playback; 417 unsigned int symmetric_rate:1; 418 unsigned int symmetric_channels:1; 419 unsigned int symmetric_sample_bits:1; 420 421 /* probe ordering - for components with runtime dependencies */ 422 int probe_order; 423 int remove_order; 424 }; 425 426 /* 427 * Digital Audio Interface runtime data. 428 * 429 * Holds runtime data for a DAI. 430 */ 431 struct snd_soc_dai { 432 const char *name; 433 int id; 434 struct device *dev; 435 436 /* driver ops */ 437 struct snd_soc_dai_driver *driver; 438 439 /* DAI runtime info */ 440 unsigned int stream_active[SNDRV_PCM_STREAM_LAST + 1]; /* usage count */ 441 442 struct snd_soc_dapm_widget *playback_widget; 443 struct snd_soc_dapm_widget *capture_widget; 444 445 /* DAI DMA data */ 446 void *playback_dma_data; 447 void *capture_dma_data; 448 449 /* Symmetry data - only valid if symmetry is being enforced */ 450 unsigned int rate; 451 unsigned int channels; 452 unsigned int sample_bits; 453 454 /* parent platform/codec */ 455 struct snd_soc_component *component; 456 457 /* CODEC TDM slot masks and params (for fixup) */ 458 unsigned int tx_mask; 459 unsigned int rx_mask; 460 461 struct list_head list; 462 463 /* function mark */ 464 struct snd_pcm_substream *mark_startup; 465 struct snd_pcm_substream *mark_hw_params; 466 struct snd_pcm_substream *mark_trigger; 467 struct snd_compr_stream *mark_compr_startup; 468 469 /* bit field */ 470 unsigned int probed:1; 471 }; 472 473 static inline struct snd_soc_pcm_stream * 474 snd_soc_dai_get_pcm_stream(const struct snd_soc_dai *dai, int stream) 475 { 476 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? 477 &dai->driver->playback : &dai->driver->capture; 478 } 479 480 static inline 481 struct snd_soc_dapm_widget *snd_soc_dai_get_widget( 482 struct snd_soc_dai *dai, int stream) 483 { 484 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? 485 dai->playback_widget : dai->capture_widget; 486 } 487 488 static inline void *snd_soc_dai_get_dma_data(const struct snd_soc_dai *dai, 489 const struct snd_pcm_substream *ss) 490 { 491 return (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) ? 492 dai->playback_dma_data : dai->capture_dma_data; 493 } 494 495 static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai *dai, 496 const struct snd_pcm_substream *ss, 497 void *data) 498 { 499 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) 500 dai->playback_dma_data = data; 501 else 502 dai->capture_dma_data = data; 503 } 504 505 static inline void snd_soc_dai_init_dma_data(struct snd_soc_dai *dai, 506 void *playback, void *capture) 507 { 508 dai->playback_dma_data = playback; 509 dai->capture_dma_data = capture; 510 } 511 512 static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai, 513 void *data) 514 { 515 dev_set_drvdata(dai->dev, data); 516 } 517 518 static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai) 519 { 520 return dev_get_drvdata(dai->dev); 521 } 522 523 /** 524 * snd_soc_dai_set_stream() - Configures a DAI for stream operation 525 * @dai: DAI 526 * @stream: STREAM (opaque structure depending on DAI type) 527 * @direction: Stream direction(Playback/Capture) 528 * Some subsystems, such as SoundWire, don't have a notion of direction and we reuse 529 * the ASoC stream direction to configure sink/source ports. 530 * Playback maps to source ports and Capture for sink ports. 531 * 532 * This should be invoked with NULL to clear the stream set previously. 533 * Returns 0 on success, a negative error code otherwise. 534 */ 535 static inline int snd_soc_dai_set_stream(struct snd_soc_dai *dai, 536 void *stream, int direction) 537 { 538 if (dai->driver->ops->set_stream) 539 return dai->driver->ops->set_stream(dai, stream, direction); 540 else 541 return -ENOTSUPP; 542 } 543 544 /** 545 * snd_soc_dai_get_stream() - Retrieves stream from DAI 546 * @dai: DAI 547 * @direction: Stream direction(Playback/Capture) 548 * 549 * This routine only retrieves that was previously configured 550 * with snd_soc_dai_get_stream() 551 * 552 * Returns pointer to stream or an ERR_PTR value, e.g. 553 * ERR_PTR(-ENOTSUPP) if callback is not supported; 554 */ 555 static inline void *snd_soc_dai_get_stream(struct snd_soc_dai *dai, 556 int direction) 557 { 558 if (dai->driver->ops->get_stream) 559 return dai->driver->ops->get_stream(dai, direction); 560 else 561 return ERR_PTR(-ENOTSUPP); 562 } 563 564 static inline unsigned int 565 snd_soc_dai_stream_active(struct snd_soc_dai *dai, int stream) 566 { 567 return dai->stream_active[stream]; 568 } 569 570 #endif 571