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);
snd_soc_dai_activate(struct snd_soc_dai * dai,int stream)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 }
snd_soc_dai_deactivate(struct snd_soc_dai * dai,int stream)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 /* for Playback/Capture */
427 struct snd_soc_dai_stream {
428 	struct snd_soc_dapm_widget *widget;
429 
430 	unsigned int active;	/* usage count */
431 	unsigned int tdm_mask;	/* CODEC TDM slot masks and params (for fixup) */
432 
433 	void *dma_data;		/* DAI DMA data */
434 };
435 
436 /*
437  * Digital Audio Interface runtime data.
438  *
439  * Holds runtime data for a DAI.
440  */
441 struct snd_soc_dai {
442 	const char *name;
443 	int id;
444 	struct device *dev;
445 
446 	/* driver ops */
447 	struct snd_soc_dai_driver *driver;
448 
449 	/* DAI runtime info */
450 	struct snd_soc_dai_stream stream[SNDRV_PCM_STREAM_LAST + 1];
451 
452 	/* Symmetry data - only valid if symmetry is being enforced */
453 	unsigned int rate;
454 	unsigned int channels;
455 	unsigned int sample_bits;
456 
457 	/* parent platform/codec */
458 	struct snd_soc_component *component;
459 
460 	struct list_head list;
461 
462 	/* function mark */
463 	struct snd_pcm_substream *mark_startup;
464 	struct snd_pcm_substream *mark_hw_params;
465 	struct snd_pcm_substream *mark_trigger;
466 	struct snd_compr_stream  *mark_compr_startup;
467 
468 	/* bit field */
469 	unsigned int probed:1;
470 };
471 
472 static inline struct snd_soc_pcm_stream *
snd_soc_dai_get_pcm_stream(const struct snd_soc_dai * dai,int stream)473 snd_soc_dai_get_pcm_stream(const struct snd_soc_dai *dai, int stream)
474 {
475 	return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
476 		&dai->driver->playback : &dai->driver->capture;
477 }
478 
479 #define snd_soc_dai_get_widget_playback(dai)	snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_PLAYBACK)
480 #define snd_soc_dai_get_widget_capture(dai)	snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_CAPTURE)
481 static inline
snd_soc_dai_get_widget(struct snd_soc_dai * dai,int stream)482 struct snd_soc_dapm_widget *snd_soc_dai_get_widget(struct snd_soc_dai *dai, int stream)
483 {
484 	return dai->stream[stream].widget;
485 }
486 
487 #define snd_soc_dai_set_widget_playback(dai, widget)	snd_soc_dai_set_widget(dai, SNDRV_PCM_STREAM_PLAYBACK, widget)
488 #define snd_soc_dai_set_widget_capture(dai,  widget)	snd_soc_dai_set_widget(dai, SNDRV_PCM_STREAM_CAPTURE,  widget)
489 static inline
snd_soc_dai_set_widget(struct snd_soc_dai * dai,int stream,struct snd_soc_dapm_widget * widget)490 void snd_soc_dai_set_widget(struct snd_soc_dai *dai, int stream, struct snd_soc_dapm_widget *widget)
491 {
492 	dai->stream[stream].widget = widget;
493 }
494 
495 #define snd_soc_dai_dma_data_get_playback(dai)	snd_soc_dai_dma_data_get(dai, SNDRV_PCM_STREAM_PLAYBACK)
496 #define snd_soc_dai_dma_data_get_capture(dai)	snd_soc_dai_dma_data_get(dai, SNDRV_PCM_STREAM_CAPTURE)
497 #define snd_soc_dai_get_dma_data(dai, ss)	snd_soc_dai_dma_data_get(dai, ss->stream)
snd_soc_dai_dma_data_get(const struct snd_soc_dai * dai,int stream)498 static inline void *snd_soc_dai_dma_data_get(const struct snd_soc_dai *dai, int stream)
499 {
500 	return dai->stream[stream].dma_data;
501 }
502 
503 #define snd_soc_dai_dma_data_set_playback(dai, data)	snd_soc_dai_dma_data_set(dai, SNDRV_PCM_STREAM_PLAYBACK, data)
504 #define snd_soc_dai_dma_data_set_capture(dai,  data)	snd_soc_dai_dma_data_set(dai, SNDRV_PCM_STREAM_CAPTURE,  data)
505 #define snd_soc_dai_set_dma_data(dai, ss, data)		snd_soc_dai_dma_data_set(dai, ss->stream, data)
snd_soc_dai_dma_data_set(struct snd_soc_dai * dai,int stream,void * data)506 static inline void snd_soc_dai_dma_data_set(struct snd_soc_dai *dai, int stream, void *data)
507 {
508 	dai->stream[stream].dma_data = data;
509 }
510 
snd_soc_dai_init_dma_data(struct snd_soc_dai * dai,void * playback,void * capture)511 static inline void snd_soc_dai_init_dma_data(struct snd_soc_dai *dai, void *playback, void *capture)
512 {
513 	snd_soc_dai_dma_data_set_playback(dai, playback);
514 	snd_soc_dai_dma_data_set_capture(dai,  capture);
515 }
516 
snd_soc_dai_tdm_mask_get(struct snd_soc_dai * dai,int stream)517 static inline unsigned int snd_soc_dai_tdm_mask_get(struct snd_soc_dai *dai, int stream)
518 {
519 	return dai->stream[stream].tdm_mask;
520 }
521 
snd_soc_dai_tdm_mask_set(struct snd_soc_dai * dai,int stream,unsigned int tdm_mask)522 static inline void snd_soc_dai_tdm_mask_set(struct snd_soc_dai *dai, int stream,
523 					    unsigned int tdm_mask)
524 {
525 	dai->stream[stream].tdm_mask = tdm_mask;
526 }
527 
snd_soc_dai_stream_active(struct snd_soc_dai * dai,int stream)528 static inline unsigned int snd_soc_dai_stream_active(struct snd_soc_dai *dai, int stream)
529 {
530 	/* see snd_soc_dai_action() for setup */
531 	return dai->stream[stream].active;
532 }
533 
snd_soc_dai_set_drvdata(struct snd_soc_dai * dai,void * data)534 static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai,
535 		void *data)
536 {
537 	dev_set_drvdata(dai->dev, data);
538 }
539 
snd_soc_dai_get_drvdata(struct snd_soc_dai * dai)540 static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai)
541 {
542 	return dev_get_drvdata(dai->dev);
543 }
544 
545 /**
546  * snd_soc_dai_set_stream() - Configures a DAI for stream operation
547  * @dai: DAI
548  * @stream: STREAM (opaque structure depending on DAI type)
549  * @direction: Stream direction(Playback/Capture)
550  * Some subsystems, such as SoundWire, don't have a notion of direction and we reuse
551  * the ASoC stream direction to configure sink/source ports.
552  * Playback maps to source ports and Capture for sink ports.
553  *
554  * This should be invoked with NULL to clear the stream set previously.
555  * Returns 0 on success, a negative error code otherwise.
556  */
snd_soc_dai_set_stream(struct snd_soc_dai * dai,void * stream,int direction)557 static inline int snd_soc_dai_set_stream(struct snd_soc_dai *dai,
558 					 void *stream, int direction)
559 {
560 	if (dai->driver->ops->set_stream)
561 		return dai->driver->ops->set_stream(dai, stream, direction);
562 	else
563 		return -ENOTSUPP;
564 }
565 
566 /**
567  * snd_soc_dai_get_stream() - Retrieves stream from DAI
568  * @dai: DAI
569  * @direction: Stream direction(Playback/Capture)
570  *
571  * This routine only retrieves that was previously configured
572  * with snd_soc_dai_get_stream()
573  *
574  * Returns pointer to stream or an ERR_PTR value, e.g.
575  * ERR_PTR(-ENOTSUPP) if callback is not supported;
576  */
snd_soc_dai_get_stream(struct snd_soc_dai * dai,int direction)577 static inline void *snd_soc_dai_get_stream(struct snd_soc_dai *dai,
578 					   int direction)
579 {
580 	if (dai->driver->ops->get_stream)
581 		return dai->driver->ops->get_stream(dai, direction);
582 	else
583 		return ERR_PTR(-ENOTSUPP);
584 }
585 
586 #endif
587