xref: /openbmc/linux/include/sound/soc-dai.h (revision 868eb92b)
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 const char *snd_soc_dai_name_get(struct snd_soc_dai *dai);
275 
276 struct snd_soc_dai_ops {
277 	/* DAI driver callbacks */
278 	int (*probe)(struct snd_soc_dai *dai);
279 	int (*remove)(struct snd_soc_dai *dai);
280 	/* compress dai */
281 	int (*compress_new)(struct snd_soc_pcm_runtime *rtd, int num);
282 	/* Optional Callback used at pcm creation*/
283 	int (*pcm_new)(struct snd_soc_pcm_runtime *rtd,
284 		       struct snd_soc_dai *dai);
285 
286 	/*
287 	 * DAI clocking configuration, all optional.
288 	 * Called by soc_card drivers, normally in their hw_params.
289 	 */
290 	int (*set_sysclk)(struct snd_soc_dai *dai,
291 		int clk_id, unsigned int freq, int dir);
292 	int (*set_pll)(struct snd_soc_dai *dai, int pll_id, int source,
293 		unsigned int freq_in, unsigned int freq_out);
294 	int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div);
295 	int (*set_bclk_ratio)(struct snd_soc_dai *dai, unsigned int ratio);
296 
297 	/*
298 	 * DAI format configuration
299 	 * Called by soc_card drivers, normally in their hw_params.
300 	 */
301 	int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt);
302 	int (*xlate_tdm_slot_mask)(unsigned int slots,
303 		unsigned int *tx_mask, unsigned int *rx_mask);
304 	int (*set_tdm_slot)(struct snd_soc_dai *dai,
305 		unsigned int tx_mask, unsigned int rx_mask,
306 		int slots, int slot_width);
307 	int (*set_channel_map)(struct snd_soc_dai *dai,
308 		unsigned int tx_num, unsigned int *tx_slot,
309 		unsigned int rx_num, unsigned int *rx_slot);
310 	int (*get_channel_map)(struct snd_soc_dai *dai,
311 			unsigned int *tx_num, unsigned int *tx_slot,
312 			unsigned int *rx_num, unsigned int *rx_slot);
313 	int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
314 
315 	int (*set_stream)(struct snd_soc_dai *dai,
316 			  void *stream, int direction);
317 	void *(*get_stream)(struct snd_soc_dai *dai, int direction);
318 
319 	/*
320 	 * DAI digital mute - optional.
321 	 * Called by soc-core to minimise any pops.
322 	 */
323 	int (*mute_stream)(struct snd_soc_dai *dai, int mute, int stream);
324 
325 	/*
326 	 * ALSA PCM audio operations - all optional.
327 	 * Called by soc-core during audio PCM operations.
328 	 */
329 	int (*startup)(struct snd_pcm_substream *,
330 		struct snd_soc_dai *);
331 	void (*shutdown)(struct snd_pcm_substream *,
332 		struct snd_soc_dai *);
333 	int (*hw_params)(struct snd_pcm_substream *,
334 		struct snd_pcm_hw_params *, struct snd_soc_dai *);
335 	int (*hw_free)(struct snd_pcm_substream *,
336 		struct snd_soc_dai *);
337 	int (*prepare)(struct snd_pcm_substream *,
338 		struct snd_soc_dai *);
339 	/*
340 	 * NOTE: Commands passed to the trigger function are not necessarily
341 	 * compatible with the current state of the dai. For example this
342 	 * sequence of commands is possible: START STOP STOP.
343 	 * So do not unconditionally use refcounting functions in the trigger
344 	 * function, e.g. clk_enable/disable.
345 	 */
346 	int (*trigger)(struct snd_pcm_substream *, int,
347 		struct snd_soc_dai *);
348 	int (*bespoke_trigger)(struct snd_pcm_substream *, int,
349 		struct snd_soc_dai *);
350 	/*
351 	 * For hardware based FIFO caused delay reporting.
352 	 * Optional.
353 	 */
354 	snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
355 		struct snd_soc_dai *);
356 
357 	/*
358 	 * Format list for auto selection.
359 	 * Format will be increased if priority format was
360 	 * not selected.
361 	 * see
362 	 *	snd_soc_dai_get_fmt()
363 	 */
364 	u64 *auto_selectable_formats;
365 	int num_auto_selectable_formats;
366 
367 	/* probe ordering - for components with runtime dependencies */
368 	int probe_order;
369 	int remove_order;
370 
371 	/* bit field */
372 	unsigned int no_capture_mute:1;
373 	unsigned int mute_unmute_on_trigger:1;
374 };
375 
376 struct snd_soc_cdai_ops {
377 	/*
378 	 * for compress ops
379 	 */
380 	int (*startup)(struct snd_compr_stream *,
381 			struct snd_soc_dai *);
382 	int (*shutdown)(struct snd_compr_stream *,
383 			struct snd_soc_dai *);
384 	int (*set_params)(struct snd_compr_stream *,
385 			struct snd_compr_params *, struct snd_soc_dai *);
386 	int (*get_params)(struct snd_compr_stream *,
387 			struct snd_codec *, struct snd_soc_dai *);
388 	int (*set_metadata)(struct snd_compr_stream *,
389 			struct snd_compr_metadata *, struct snd_soc_dai *);
390 	int (*get_metadata)(struct snd_compr_stream *,
391 			struct snd_compr_metadata *, struct snd_soc_dai *);
392 	int (*trigger)(struct snd_compr_stream *, int,
393 			struct snd_soc_dai *);
394 	int (*pointer)(struct snd_compr_stream *,
395 			struct snd_compr_tstamp *, struct snd_soc_dai *);
396 	int (*ack)(struct snd_compr_stream *, size_t,
397 			struct snd_soc_dai *);
398 };
399 
400 /*
401  * Digital Audio Interface Driver.
402  *
403  * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97
404  * operations and capabilities. Codec and platform drivers will register this
405  * structure for every DAI they have.
406  *
407  * This structure covers the clocking, formating and ALSA operations for each
408  * interface.
409  */
410 struct snd_soc_dai_driver {
411 	/* DAI description */
412 	const char *name;
413 	unsigned int id;
414 	unsigned int base;
415 	struct snd_soc_dobj dobj;
416 	struct of_phandle_args *dai_args;
417 
418 	/* ops */
419 	const struct snd_soc_dai_ops *ops;
420 	const struct snd_soc_cdai_ops *cops;
421 
422 	/* DAI capabilities */
423 	struct snd_soc_pcm_stream capture;
424 	struct snd_soc_pcm_stream playback;
425 	unsigned int symmetric_rate:1;
426 	unsigned int symmetric_channels:1;
427 	unsigned int symmetric_sample_bits:1;
428 };
429 
430 /* for Playback/Capture */
431 struct snd_soc_dai_stream {
432 	struct snd_soc_dapm_widget *widget;
433 
434 	unsigned int active;	/* usage count */
435 	unsigned int tdm_mask;	/* CODEC TDM slot masks and params (for fixup) */
436 
437 	void *dma_data;		/* DAI DMA data */
438 };
439 
440 /*
441  * Digital Audio Interface runtime data.
442  *
443  * Holds runtime data for a DAI.
444  */
445 struct snd_soc_dai {
446 	const char *name;
447 	int id;
448 	struct device *dev;
449 
450 	/* driver ops */
451 	struct snd_soc_dai_driver *driver;
452 
453 	/* DAI runtime info */
454 	struct snd_soc_dai_stream stream[SNDRV_PCM_STREAM_LAST + 1];
455 
456 	/* Symmetry data - only valid if symmetry is being enforced */
457 	unsigned int rate;
458 	unsigned int channels;
459 	unsigned int sample_bits;
460 
461 	/* parent platform/codec */
462 	struct snd_soc_component *component;
463 
464 	struct list_head list;
465 
466 	/* function mark */
467 	struct snd_pcm_substream *mark_startup;
468 	struct snd_pcm_substream *mark_hw_params;
469 	struct snd_pcm_substream *mark_trigger;
470 	struct snd_compr_stream  *mark_compr_startup;
471 
472 	/* bit field */
473 	unsigned int probed:1;
474 };
475 
476 static inline struct snd_soc_pcm_stream *
snd_soc_dai_get_pcm_stream(const struct snd_soc_dai * dai,int stream)477 snd_soc_dai_get_pcm_stream(const struct snd_soc_dai *dai, int stream)
478 {
479 	return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
480 		&dai->driver->playback : &dai->driver->capture;
481 }
482 
483 #define snd_soc_dai_get_widget_playback(dai)	snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_PLAYBACK)
484 #define snd_soc_dai_get_widget_capture(dai)	snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_CAPTURE)
485 static inline
snd_soc_dai_get_widget(struct snd_soc_dai * dai,int stream)486 struct snd_soc_dapm_widget *snd_soc_dai_get_widget(struct snd_soc_dai *dai, int stream)
487 {
488 	return dai->stream[stream].widget;
489 }
490 
491 #define snd_soc_dai_set_widget_playback(dai, widget)	snd_soc_dai_set_widget(dai, SNDRV_PCM_STREAM_PLAYBACK, widget)
492 #define snd_soc_dai_set_widget_capture(dai,  widget)	snd_soc_dai_set_widget(dai, SNDRV_PCM_STREAM_CAPTURE,  widget)
493 static inline
snd_soc_dai_set_widget(struct snd_soc_dai * dai,int stream,struct snd_soc_dapm_widget * widget)494 void snd_soc_dai_set_widget(struct snd_soc_dai *dai, int stream, struct snd_soc_dapm_widget *widget)
495 {
496 	dai->stream[stream].widget = widget;
497 }
498 
499 #define snd_soc_dai_dma_data_get_playback(dai)	snd_soc_dai_dma_data_get(dai, SNDRV_PCM_STREAM_PLAYBACK)
500 #define snd_soc_dai_dma_data_get_capture(dai)	snd_soc_dai_dma_data_get(dai, SNDRV_PCM_STREAM_CAPTURE)
501 #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)502 static inline void *snd_soc_dai_dma_data_get(const struct snd_soc_dai *dai, int stream)
503 {
504 	return dai->stream[stream].dma_data;
505 }
506 
507 #define snd_soc_dai_dma_data_set_playback(dai, data)	snd_soc_dai_dma_data_set(dai, SNDRV_PCM_STREAM_PLAYBACK, data)
508 #define snd_soc_dai_dma_data_set_capture(dai,  data)	snd_soc_dai_dma_data_set(dai, SNDRV_PCM_STREAM_CAPTURE,  data)
509 #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)510 static inline void snd_soc_dai_dma_data_set(struct snd_soc_dai *dai, int stream, void *data)
511 {
512 	dai->stream[stream].dma_data = data;
513 }
514 
snd_soc_dai_init_dma_data(struct snd_soc_dai * dai,void * playback,void * capture)515 static inline void snd_soc_dai_init_dma_data(struct snd_soc_dai *dai, void *playback, void *capture)
516 {
517 	snd_soc_dai_dma_data_set_playback(dai, playback);
518 	snd_soc_dai_dma_data_set_capture(dai,  capture);
519 }
520 
snd_soc_dai_tdm_mask_get(struct snd_soc_dai * dai,int stream)521 static inline unsigned int snd_soc_dai_tdm_mask_get(struct snd_soc_dai *dai, int stream)
522 {
523 	return dai->stream[stream].tdm_mask;
524 }
525 
snd_soc_dai_tdm_mask_set(struct snd_soc_dai * dai,int stream,unsigned int tdm_mask)526 static inline void snd_soc_dai_tdm_mask_set(struct snd_soc_dai *dai, int stream,
527 					    unsigned int tdm_mask)
528 {
529 	dai->stream[stream].tdm_mask = tdm_mask;
530 }
531 
snd_soc_dai_stream_active(struct snd_soc_dai * dai,int stream)532 static inline unsigned int snd_soc_dai_stream_active(struct snd_soc_dai *dai, int stream)
533 {
534 	/* see snd_soc_dai_action() for setup */
535 	return dai->stream[stream].active;
536 }
537 
snd_soc_dai_set_drvdata(struct snd_soc_dai * dai,void * data)538 static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai,
539 		void *data)
540 {
541 	dev_set_drvdata(dai->dev, data);
542 }
543 
snd_soc_dai_get_drvdata(struct snd_soc_dai * dai)544 static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai)
545 {
546 	return dev_get_drvdata(dai->dev);
547 }
548 
549 /**
550  * snd_soc_dai_set_stream() - Configures a DAI for stream operation
551  * @dai: DAI
552  * @stream: STREAM (opaque structure depending on DAI type)
553  * @direction: Stream direction(Playback/Capture)
554  * Some subsystems, such as SoundWire, don't have a notion of direction and we reuse
555  * the ASoC stream direction to configure sink/source ports.
556  * Playback maps to source ports and Capture for sink ports.
557  *
558  * This should be invoked with NULL to clear the stream set previously.
559  * Returns 0 on success, a negative error code otherwise.
560  */
snd_soc_dai_set_stream(struct snd_soc_dai * dai,void * stream,int direction)561 static inline int snd_soc_dai_set_stream(struct snd_soc_dai *dai,
562 					 void *stream, int direction)
563 {
564 	if (dai->driver->ops->set_stream)
565 		return dai->driver->ops->set_stream(dai, stream, direction);
566 	else
567 		return -ENOTSUPP;
568 }
569 
570 /**
571  * snd_soc_dai_get_stream() - Retrieves stream from DAI
572  * @dai: DAI
573  * @direction: Stream direction(Playback/Capture)
574  *
575  * This routine only retrieves that was previously configured
576  * with snd_soc_dai_get_stream()
577  *
578  * Returns pointer to stream or an ERR_PTR value, e.g.
579  * ERR_PTR(-ENOTSUPP) if callback is not supported;
580  */
snd_soc_dai_get_stream(struct snd_soc_dai * dai,int direction)581 static inline void *snd_soc_dai_get_stream(struct snd_soc_dai *dai,
582 					   int direction)
583 {
584 	if (dai->driver->ops->get_stream)
585 		return dai->driver->ops->get_stream(dai, direction);
586 	else
587 		return ERR_PTR(-ENOTSUPP);
588 }
589 
590 #endif
591