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 /* Describes the possible PCM format */ 128 #define SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT 48 129 #define SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_MASK (0xFFFFULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 130 #define SND_SOC_POSSIBLE_DAIFMT_CBP_CFP (0x1ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 131 #define SND_SOC_POSSIBLE_DAIFMT_CBC_CFP (0x2ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 132 #define SND_SOC_POSSIBLE_DAIFMT_CBP_CFC (0x4ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 133 #define SND_SOC_POSSIBLE_DAIFMT_CBC_CFC (0x8ULL << SND_SOC_POSSIBLE_DAIFMT_CLOCK_PROVIDER_SHIFT) 134 135 #define SND_SOC_DAIFMT_FORMAT_MASK 0x000f 136 #define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0 137 #define SND_SOC_DAIFMT_INV_MASK 0x0f00 138 #define SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK 0xf000 139 140 #define SND_SOC_DAIFMT_MASTER_MASK SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK 141 142 /* 143 * Master Clock Directions 144 */ 145 #define SND_SOC_CLOCK_IN 0 146 #define SND_SOC_CLOCK_OUT 1 147 148 #define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S8 |\ 149 SNDRV_PCM_FMTBIT_S16_LE |\ 150 SNDRV_PCM_FMTBIT_S16_BE |\ 151 SNDRV_PCM_FMTBIT_S20_3LE |\ 152 SNDRV_PCM_FMTBIT_S20_3BE |\ 153 SNDRV_PCM_FMTBIT_S20_LE |\ 154 SNDRV_PCM_FMTBIT_S20_BE |\ 155 SNDRV_PCM_FMTBIT_S24_3LE |\ 156 SNDRV_PCM_FMTBIT_S24_3BE |\ 157 SNDRV_PCM_FMTBIT_S32_LE |\ 158 SNDRV_PCM_FMTBIT_S32_BE) 159 160 struct snd_soc_dai_driver; 161 struct snd_soc_dai; 162 struct snd_ac97_bus_ops; 163 164 /* Digital Audio Interface clocking API.*/ 165 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, 166 unsigned int freq, int dir); 167 168 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, 169 int div_id, int div); 170 171 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, 172 int pll_id, int source, unsigned int freq_in, unsigned int freq_out); 173 174 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio); 175 176 /* Digital Audio interface formatting */ 177 int snd_soc_dai_get_fmt_max_priority(struct snd_soc_pcm_runtime *rtd); 178 u64 snd_soc_dai_get_fmt(struct snd_soc_dai *dai, int priority); 179 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt); 180 181 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, 182 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width); 183 184 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, 185 unsigned int tx_num, unsigned int *tx_slot, 186 unsigned int rx_num, unsigned int *rx_slot); 187 188 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate); 189 190 /* Digital Audio Interface mute */ 191 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute, 192 int direction); 193 194 195 int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai, 196 unsigned int *tx_num, unsigned int *tx_slot, 197 unsigned int *rx_num, unsigned int *rx_slot); 198 199 int snd_soc_dai_is_dummy(struct snd_soc_dai *dai); 200 201 int snd_soc_dai_hw_params(struct snd_soc_dai *dai, 202 struct snd_pcm_substream *substream, 203 struct snd_pcm_hw_params *params); 204 void snd_soc_dai_hw_free(struct snd_soc_dai *dai, 205 struct snd_pcm_substream *substream, 206 int rollback); 207 int snd_soc_dai_startup(struct snd_soc_dai *dai, 208 struct snd_pcm_substream *substream); 209 void snd_soc_dai_shutdown(struct snd_soc_dai *dai, 210 struct snd_pcm_substream *substream, int rollback); 211 void snd_soc_dai_suspend(struct snd_soc_dai *dai); 212 void snd_soc_dai_resume(struct snd_soc_dai *dai); 213 int snd_soc_dai_compress_new(struct snd_soc_dai *dai, 214 struct snd_soc_pcm_runtime *rtd, int num); 215 bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream); 216 void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link); 217 void snd_soc_dai_action(struct snd_soc_dai *dai, 218 int stream, int action); 219 static inline void snd_soc_dai_activate(struct snd_soc_dai *dai, 220 int stream) 221 { 222 snd_soc_dai_action(dai, stream, 1); 223 } 224 static inline void snd_soc_dai_deactivate(struct snd_soc_dai *dai, 225 int stream) 226 { 227 snd_soc_dai_action(dai, stream, -1); 228 } 229 int snd_soc_dai_active(struct snd_soc_dai *dai); 230 231 int snd_soc_pcm_dai_probe(struct snd_soc_pcm_runtime *rtd, int order); 232 int snd_soc_pcm_dai_remove(struct snd_soc_pcm_runtime *rtd, int order); 233 int snd_soc_pcm_dai_new(struct snd_soc_pcm_runtime *rtd); 234 int snd_soc_pcm_dai_prepare(struct snd_pcm_substream *substream); 235 int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream, int cmd, 236 int rollback); 237 int snd_soc_pcm_dai_bespoke_trigger(struct snd_pcm_substream *substream, 238 int cmd); 239 void snd_soc_pcm_dai_delay(struct snd_pcm_substream *substream, 240 snd_pcm_sframes_t *cpu_delay, snd_pcm_sframes_t *codec_delay); 241 242 int snd_soc_dai_compr_startup(struct snd_soc_dai *dai, 243 struct snd_compr_stream *cstream); 244 void snd_soc_dai_compr_shutdown(struct snd_soc_dai *dai, 245 struct snd_compr_stream *cstream, 246 int rollback); 247 int snd_soc_dai_compr_trigger(struct snd_soc_dai *dai, 248 struct snd_compr_stream *cstream, int cmd); 249 int snd_soc_dai_compr_set_params(struct snd_soc_dai *dai, 250 struct snd_compr_stream *cstream, 251 struct snd_compr_params *params); 252 int snd_soc_dai_compr_get_params(struct snd_soc_dai *dai, 253 struct snd_compr_stream *cstream, 254 struct snd_codec *params); 255 int snd_soc_dai_compr_ack(struct snd_soc_dai *dai, 256 struct snd_compr_stream *cstream, 257 size_t bytes); 258 int snd_soc_dai_compr_pointer(struct snd_soc_dai *dai, 259 struct snd_compr_stream *cstream, 260 struct snd_compr_tstamp *tstamp); 261 int snd_soc_dai_compr_set_metadata(struct snd_soc_dai *dai, 262 struct snd_compr_stream *cstream, 263 struct snd_compr_metadata *metadata); 264 int snd_soc_dai_compr_get_metadata(struct snd_soc_dai *dai, 265 struct snd_compr_stream *cstream, 266 struct snd_compr_metadata *metadata); 267 268 struct snd_soc_dai_ops { 269 /* 270 * DAI clocking configuration, all optional. 271 * Called by soc_card drivers, normally in their hw_params. 272 */ 273 int (*set_sysclk)(struct snd_soc_dai *dai, 274 int clk_id, unsigned int freq, int dir); 275 int (*set_pll)(struct snd_soc_dai *dai, int pll_id, int source, 276 unsigned int freq_in, unsigned int freq_out); 277 int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div); 278 int (*set_bclk_ratio)(struct snd_soc_dai *dai, unsigned int ratio); 279 280 /* 281 * DAI format configuration 282 * Called by soc_card drivers, normally in their hw_params. 283 */ 284 int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt); 285 int (*xlate_tdm_slot_mask)(unsigned int slots, 286 unsigned int *tx_mask, unsigned int *rx_mask); 287 int (*set_tdm_slot)(struct snd_soc_dai *dai, 288 unsigned int tx_mask, unsigned int rx_mask, 289 int slots, int slot_width); 290 int (*set_channel_map)(struct snd_soc_dai *dai, 291 unsigned int tx_num, unsigned int *tx_slot, 292 unsigned int rx_num, unsigned int *rx_slot); 293 int (*get_channel_map)(struct snd_soc_dai *dai, 294 unsigned int *tx_num, unsigned int *tx_slot, 295 unsigned int *rx_num, unsigned int *rx_slot); 296 int (*set_tristate)(struct snd_soc_dai *dai, int tristate); 297 298 int (*set_stream)(struct snd_soc_dai *dai, 299 void *stream, int direction); 300 void *(*get_stream)(struct snd_soc_dai *dai, int direction); 301 302 /* 303 * DAI digital mute - optional. 304 * Called by soc-core to minimise any pops. 305 */ 306 int (*mute_stream)(struct snd_soc_dai *dai, int mute, int stream); 307 308 /* 309 * ALSA PCM audio operations - all optional. 310 * Called by soc-core during audio PCM operations. 311 */ 312 int (*startup)(struct snd_pcm_substream *, 313 struct snd_soc_dai *); 314 void (*shutdown)(struct snd_pcm_substream *, 315 struct snd_soc_dai *); 316 int (*hw_params)(struct snd_pcm_substream *, 317 struct snd_pcm_hw_params *, struct snd_soc_dai *); 318 int (*hw_free)(struct snd_pcm_substream *, 319 struct snd_soc_dai *); 320 int (*prepare)(struct snd_pcm_substream *, 321 struct snd_soc_dai *); 322 /* 323 * NOTE: Commands passed to the trigger function are not necessarily 324 * compatible with the current state of the dai. For example this 325 * sequence of commands is possible: START STOP STOP. 326 * So do not unconditionally use refcounting functions in the trigger 327 * function, e.g. clk_enable/disable. 328 */ 329 int (*trigger)(struct snd_pcm_substream *, int, 330 struct snd_soc_dai *); 331 int (*bespoke_trigger)(struct snd_pcm_substream *, int, 332 struct snd_soc_dai *); 333 /* 334 * For hardware based FIFO caused delay reporting. 335 * Optional. 336 */ 337 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *, 338 struct snd_soc_dai *); 339 340 /* 341 * Format list for auto selection. 342 * Format will be increased if priority format was 343 * not selected. 344 * see 345 * snd_soc_dai_get_fmt() 346 */ 347 u64 *auto_selectable_formats; 348 int num_auto_selectable_formats; 349 350 /* bit field */ 351 unsigned int no_capture_mute:1; 352 }; 353 354 struct snd_soc_cdai_ops { 355 /* 356 * for compress ops 357 */ 358 int (*startup)(struct snd_compr_stream *, 359 struct snd_soc_dai *); 360 int (*shutdown)(struct snd_compr_stream *, 361 struct snd_soc_dai *); 362 int (*set_params)(struct snd_compr_stream *, 363 struct snd_compr_params *, struct snd_soc_dai *); 364 int (*get_params)(struct snd_compr_stream *, 365 struct snd_codec *, struct snd_soc_dai *); 366 int (*set_metadata)(struct snd_compr_stream *, 367 struct snd_compr_metadata *, struct snd_soc_dai *); 368 int (*get_metadata)(struct snd_compr_stream *, 369 struct snd_compr_metadata *, struct snd_soc_dai *); 370 int (*trigger)(struct snd_compr_stream *, int, 371 struct snd_soc_dai *); 372 int (*pointer)(struct snd_compr_stream *, 373 struct snd_compr_tstamp *, struct snd_soc_dai *); 374 int (*ack)(struct snd_compr_stream *, size_t, 375 struct snd_soc_dai *); 376 }; 377 378 /* 379 * Digital Audio Interface Driver. 380 * 381 * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97 382 * operations and capabilities. Codec and platform drivers will register this 383 * structure for every DAI they have. 384 * 385 * This structure covers the clocking, formating and ALSA operations for each 386 * interface. 387 */ 388 struct snd_soc_dai_driver { 389 /* DAI description */ 390 const char *name; 391 unsigned int id; 392 unsigned int base; 393 struct snd_soc_dobj dobj; 394 395 /* DAI driver callbacks */ 396 int (*probe)(struct snd_soc_dai *dai); 397 int (*remove)(struct snd_soc_dai *dai); 398 /* compress dai */ 399 int (*compress_new)(struct snd_soc_pcm_runtime *rtd, int num); 400 /* Optional Callback used at pcm creation*/ 401 int (*pcm_new)(struct snd_soc_pcm_runtime *rtd, 402 struct snd_soc_dai *dai); 403 404 /* ops */ 405 const struct snd_soc_dai_ops *ops; 406 const struct snd_soc_cdai_ops *cops; 407 408 /* DAI capabilities */ 409 struct snd_soc_pcm_stream capture; 410 struct snd_soc_pcm_stream playback; 411 unsigned int symmetric_rate:1; 412 unsigned int symmetric_channels:1; 413 unsigned int symmetric_sample_bits:1; 414 415 /* probe ordering - for components with runtime dependencies */ 416 int probe_order; 417 int remove_order; 418 }; 419 420 /* 421 * Digital Audio Interface runtime data. 422 * 423 * Holds runtime data for a DAI. 424 */ 425 struct snd_soc_dai { 426 const char *name; 427 int id; 428 struct device *dev; 429 430 /* driver ops */ 431 struct snd_soc_dai_driver *driver; 432 433 /* DAI runtime info */ 434 unsigned int stream_active[SNDRV_PCM_STREAM_LAST + 1]; /* usage count */ 435 436 struct snd_soc_dapm_widget *playback_widget; 437 struct snd_soc_dapm_widget *capture_widget; 438 439 /* DAI DMA data */ 440 void *playback_dma_data; 441 void *capture_dma_data; 442 443 /* Symmetry data - only valid if symmetry is being enforced */ 444 unsigned int rate; 445 unsigned int channels; 446 unsigned int sample_bits; 447 448 /* parent platform/codec */ 449 struct snd_soc_component *component; 450 451 /* CODEC TDM slot masks and params (for fixup) */ 452 unsigned int tx_mask; 453 unsigned int rx_mask; 454 455 struct list_head list; 456 457 /* function mark */ 458 struct snd_pcm_substream *mark_startup; 459 struct snd_pcm_substream *mark_hw_params; 460 struct snd_pcm_substream *mark_trigger; 461 struct snd_compr_stream *mark_compr_startup; 462 463 /* bit field */ 464 unsigned int probed:1; 465 }; 466 467 static inline struct snd_soc_pcm_stream * 468 snd_soc_dai_get_pcm_stream(const struct snd_soc_dai *dai, int stream) 469 { 470 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? 471 &dai->driver->playback : &dai->driver->capture; 472 } 473 474 static inline 475 struct snd_soc_dapm_widget *snd_soc_dai_get_widget( 476 struct snd_soc_dai *dai, int stream) 477 { 478 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? 479 dai->playback_widget : dai->capture_widget; 480 } 481 482 static inline void *snd_soc_dai_get_dma_data(const struct snd_soc_dai *dai, 483 const struct snd_pcm_substream *ss) 484 { 485 return (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) ? 486 dai->playback_dma_data : dai->capture_dma_data; 487 } 488 489 static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai *dai, 490 const struct snd_pcm_substream *ss, 491 void *data) 492 { 493 if (ss->stream == SNDRV_PCM_STREAM_PLAYBACK) 494 dai->playback_dma_data = data; 495 else 496 dai->capture_dma_data = data; 497 } 498 499 static inline void snd_soc_dai_init_dma_data(struct snd_soc_dai *dai, 500 void *playback, void *capture) 501 { 502 dai->playback_dma_data = playback; 503 dai->capture_dma_data = capture; 504 } 505 506 static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai, 507 void *data) 508 { 509 dev_set_drvdata(dai->dev, data); 510 } 511 512 static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai) 513 { 514 return dev_get_drvdata(dai->dev); 515 } 516 517 /** 518 * snd_soc_dai_set_stream() - Configures a DAI for stream operation 519 * @dai: DAI 520 * @stream: STREAM (opaque structure depending on DAI type) 521 * @direction: Stream direction(Playback/Capture) 522 * Some subsystems, such as SoundWire, don't have a notion of direction and we reuse 523 * the ASoC stream direction to configure sink/source ports. 524 * Playback maps to source ports and Capture for sink ports. 525 * 526 * This should be invoked with NULL to clear the stream set previously. 527 * Returns 0 on success, a negative error code otherwise. 528 */ 529 static inline int snd_soc_dai_set_stream(struct snd_soc_dai *dai, 530 void *stream, int direction) 531 { 532 if (dai->driver->ops->set_stream) 533 return dai->driver->ops->set_stream(dai, stream, direction); 534 else 535 return -ENOTSUPP; 536 } 537 538 /** 539 * snd_soc_dai_get_stream() - Retrieves stream from DAI 540 * @dai: DAI 541 * @direction: Stream direction(Playback/Capture) 542 * 543 * This routine only retrieves that was previously configured 544 * with snd_soc_dai_get_stream() 545 * 546 * Returns pointer to stream or an ERR_PTR value, e.g. 547 * ERR_PTR(-ENOTSUPP) if callback is not supported; 548 */ 549 static inline void *snd_soc_dai_get_stream(struct snd_soc_dai *dai, 550 int direction) 551 { 552 if (dai->driver->ops->get_stream) 553 return dai->driver->ops->get_stream(dai, direction); 554 else 555 return ERR_PTR(-ENOTSUPP); 556 } 557 558 static inline unsigned int 559 snd_soc_dai_stream_active(struct snd_soc_dai *dai, int stream) 560 { 561 return dai->stream_active[stream]; 562 } 563 564 #endif 565