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);
snd_soc_dai_activate(struct snd_soc_dai * dai,int stream)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 }
snd_soc_dai_deactivate(struct snd_soc_dai * dai,int stream)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 *
snd_soc_dai_get_pcm_stream(const struct snd_soc_dai * dai,int 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
snd_soc_dai_get_widget(struct snd_soc_dai * dai,int stream)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 
snd_soc_dai_get_dma_data(const struct snd_soc_dai * dai,const struct snd_pcm_substream * ss)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 
snd_soc_dai_set_dma_data(struct snd_soc_dai * dai,const struct snd_pcm_substream * ss,void * data)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 
snd_soc_dai_init_dma_data(struct snd_soc_dai * dai,void * playback,void * capture)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 
snd_soc_dai_set_drvdata(struct snd_soc_dai * dai,void * data)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 
snd_soc_dai_get_drvdata(struct snd_soc_dai * dai)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  */
snd_soc_dai_set_stream(struct snd_soc_dai * dai,void * stream,int direction)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  */
snd_soc_dai_get_stream(struct snd_soc_dai * dai,int direction)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
snd_soc_dai_stream_active(struct snd_soc_dai * dai,int stream)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