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1 /* SPDX-License-Identifier: GPL-2.0
2  *
3  * soc-component.h
4  *
5  * Copyright (C) 2019 Renesas Electronics Corp.
6  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7  */
8 #ifndef __SOC_COMPONENT_H
9 #define __SOC_COMPONENT_H
10 
11 #include <sound/soc.h>
12 
13 /*
14  * Component probe and remove ordering levels for components with runtime
15  * dependencies.
16  */
17 #define SND_SOC_COMP_ORDER_FIRST	-2
18 #define SND_SOC_COMP_ORDER_EARLY	-1
19 #define SND_SOC_COMP_ORDER_NORMAL	 0
20 #define SND_SOC_COMP_ORDER_LATE		 1
21 #define SND_SOC_COMP_ORDER_LAST		 2
22 
23 #define for_each_comp_order(order)		\
24 	for (order  = SND_SOC_COMP_ORDER_FIRST;	\
25 	     order <= SND_SOC_COMP_ORDER_LAST;	\
26 	     order++)
27 
28 /* component interface */
29 struct snd_compress_ops {
30 	int (*open)(struct snd_soc_component *component,
31 		    struct snd_compr_stream *stream);
32 	int (*free)(struct snd_soc_component *component,
33 		    struct snd_compr_stream *stream);
34 	int (*set_params)(struct snd_soc_component *component,
35 			  struct snd_compr_stream *stream,
36 			  struct snd_compr_params *params);
37 	int (*get_params)(struct snd_soc_component *component,
38 			  struct snd_compr_stream *stream,
39 			  struct snd_codec *params);
40 	int (*set_metadata)(struct snd_soc_component *component,
41 			    struct snd_compr_stream *stream,
42 			    struct snd_compr_metadata *metadata);
43 	int (*get_metadata)(struct snd_soc_component *component,
44 			    struct snd_compr_stream *stream,
45 			    struct snd_compr_metadata *metadata);
46 	int (*trigger)(struct snd_soc_component *component,
47 		       struct snd_compr_stream *stream, int cmd);
48 	int (*pointer)(struct snd_soc_component *component,
49 		       struct snd_compr_stream *stream,
50 		       struct snd_compr_tstamp *tstamp);
51 	int (*copy)(struct snd_soc_component *component,
52 		    struct snd_compr_stream *stream, char __user *buf,
53 		    size_t count);
54 	int (*mmap)(struct snd_soc_component *component,
55 		    struct snd_compr_stream *stream,
56 		    struct vm_area_struct *vma);
57 	int (*ack)(struct snd_soc_component *component,
58 		   struct snd_compr_stream *stream, size_t bytes);
59 	int (*get_caps)(struct snd_soc_component *component,
60 			struct snd_compr_stream *stream,
61 			struct snd_compr_caps *caps);
62 	int (*get_codec_caps)(struct snd_soc_component *component,
63 			      struct snd_compr_stream *stream,
64 			      struct snd_compr_codec_caps *codec);
65 };
66 
67 struct snd_soc_component_driver {
68 	const char *name;
69 
70 	/* Default control and setup, added after probe() is run */
71 	const struct snd_kcontrol_new *controls;
72 	unsigned int num_controls;
73 	const struct snd_soc_dapm_widget *dapm_widgets;
74 	unsigned int num_dapm_widgets;
75 	const struct snd_soc_dapm_route *dapm_routes;
76 	unsigned int num_dapm_routes;
77 
78 	int (*probe)(struct snd_soc_component *component);
79 	void (*remove)(struct snd_soc_component *component);
80 	int (*suspend)(struct snd_soc_component *component);
81 	int (*resume)(struct snd_soc_component *component);
82 
83 	unsigned int (*read)(struct snd_soc_component *component,
84 			     unsigned int reg);
85 	int (*write)(struct snd_soc_component *component,
86 		     unsigned int reg, unsigned int val);
87 
88 	/* pcm creation and destruction */
89 	int (*pcm_construct)(struct snd_soc_component *component,
90 			     struct snd_soc_pcm_runtime *rtd);
91 	void (*pcm_destruct)(struct snd_soc_component *component,
92 			     struct snd_pcm *pcm);
93 
94 	/* component wide operations */
95 	int (*set_sysclk)(struct snd_soc_component *component,
96 			  int clk_id, int source, unsigned int freq, int dir);
97 	int (*set_pll)(struct snd_soc_component *component, int pll_id,
98 		       int source, unsigned int freq_in, unsigned int freq_out);
99 	int (*set_jack)(struct snd_soc_component *component,
100 			struct snd_soc_jack *jack,  void *data);
101 
102 	/* DT */
103 	int (*of_xlate_dai_name)(struct snd_soc_component *component,
104 				 struct of_phandle_args *args,
105 				 const char **dai_name);
106 	int (*of_xlate_dai_id)(struct snd_soc_component *comment,
107 			       struct device_node *endpoint);
108 	void (*seq_notifier)(struct snd_soc_component *component,
109 			     enum snd_soc_dapm_type type, int subseq);
110 	int (*stream_event)(struct snd_soc_component *component, int event);
111 	int (*set_bias_level)(struct snd_soc_component *component,
112 			      enum snd_soc_bias_level level);
113 
114 	int (*open)(struct snd_soc_component *component,
115 		    struct snd_pcm_substream *substream);
116 	int (*close)(struct snd_soc_component *component,
117 		     struct snd_pcm_substream *substream);
118 	int (*ioctl)(struct snd_soc_component *component,
119 		     struct snd_pcm_substream *substream,
120 		     unsigned int cmd, void *arg);
121 	int (*hw_params)(struct snd_soc_component *component,
122 			 struct snd_pcm_substream *substream,
123 			 struct snd_pcm_hw_params *params);
124 	int (*hw_free)(struct snd_soc_component *component,
125 		       struct snd_pcm_substream *substream);
126 	int (*prepare)(struct snd_soc_component *component,
127 		       struct snd_pcm_substream *substream);
128 	int (*trigger)(struct snd_soc_component *component,
129 		       struct snd_pcm_substream *substream, int cmd);
130 	int (*sync_stop)(struct snd_soc_component *component,
131 			 struct snd_pcm_substream *substream);
132 	snd_pcm_uframes_t (*pointer)(struct snd_soc_component *component,
133 				     struct snd_pcm_substream *substream);
134 	int (*get_time_info)(struct snd_soc_component *component,
135 		struct snd_pcm_substream *substream, struct timespec64 *system_ts,
136 		struct timespec64 *audio_ts,
137 		struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
138 		struct snd_pcm_audio_tstamp_report *audio_tstamp_report);
139 	int (*copy_user)(struct snd_soc_component *component,
140 			 struct snd_pcm_substream *substream, int channel,
141 			 unsigned long pos, void __user *buf,
142 			 unsigned long bytes);
143 	struct page *(*page)(struct snd_soc_component *component,
144 			     struct snd_pcm_substream *substream,
145 			     unsigned long offset);
146 	int (*mmap)(struct snd_soc_component *component,
147 		    struct snd_pcm_substream *substream,
148 		    struct vm_area_struct *vma);
149 	int (*ack)(struct snd_soc_component *component,
150 		   struct snd_pcm_substream *substream);
151 
152 	const struct snd_compress_ops *compress_ops;
153 
154 	/* probe ordering - for components with runtime dependencies */
155 	int probe_order;
156 	int remove_order;
157 
158 	/*
159 	 * signal if the module handling the component should not be removed
160 	 * if a pcm is open. Setting this would prevent the module
161 	 * refcount being incremented in probe() but allow it be incremented
162 	 * when a pcm is opened and decremented when it is closed.
163 	 */
164 	unsigned int module_get_upon_open:1;
165 
166 	/* bits */
167 	unsigned int idle_bias_on:1;
168 	unsigned int suspend_bias_off:1;
169 	unsigned int use_pmdown_time:1; /* care pmdown_time at stop */
170 	unsigned int endianness:1;
171 	unsigned int non_legacy_dai_naming:1;
172 
173 	/* this component uses topology and ignore machine driver FEs */
174 	const char *ignore_machine;
175 	const char *topology_name_prefix;
176 	int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
177 				  struct snd_pcm_hw_params *params);
178 	bool use_dai_pcm_id;	/* use DAI link PCM ID as PCM device number */
179 	int be_pcm_base;	/* base device ID for all BE PCMs */
180 };
181 
182 struct snd_soc_component {
183 	const char *name;
184 	int id;
185 	const char *name_prefix;
186 	struct device *dev;
187 	struct snd_soc_card *card;
188 
189 	unsigned int active;
190 
191 	unsigned int suspended:1; /* is in suspend PM state */
192 
193 	struct list_head list;
194 	struct list_head card_aux_list; /* for auxiliary bound components */
195 	struct list_head card_list;
196 
197 	const struct snd_soc_component_driver *driver;
198 
199 	struct list_head dai_list;
200 	int num_dai;
201 
202 	struct regmap *regmap;
203 	int val_bytes;
204 
205 	struct mutex io_mutex;
206 
207 	/* attached dynamic objects */
208 	struct list_head dobj_list;
209 
210 	/*
211 	 * DO NOT use any of the fields below in drivers, they are temporary and
212 	 * are going to be removed again soon. If you use them in driver code
213 	 * the driver will be marked as BROKEN when these fields are removed.
214 	 */
215 
216 	/* Don't use these, use snd_soc_component_get_dapm() */
217 	struct snd_soc_dapm_context dapm;
218 
219 	/* machine specific init */
220 	int (*init)(struct snd_soc_component *component);
221 
222 	/* function mark */
223 	struct snd_pcm_substream *mark_module;
224 	struct snd_pcm_substream *mark_open;
225 	void *mark_pm;
226 
227 #ifdef CONFIG_DEBUG_FS
228 	struct dentry *debugfs_root;
229 	const char *debugfs_prefix;
230 #endif
231 };
232 
233 #define for_each_component_dais(component, dai)\
234 	list_for_each_entry(dai, &(component)->dai_list, list)
235 #define for_each_component_dais_safe(component, dai, _dai)\
236 	list_for_each_entry_safe(dai, _dai, &(component)->dai_list, list)
237 
238 /**
239  * snd_soc_dapm_to_component() - Casts a DAPM context to the component it is
240  *  embedded in
241  * @dapm: The DAPM context to cast to the component
242  *
243  * This function must only be used on DAPM contexts that are known to be part of
244  * a component (e.g. in a component driver). Otherwise the behavior is
245  * undefined.
246  */
snd_soc_dapm_to_component(struct snd_soc_dapm_context * dapm)247 static inline struct snd_soc_component *snd_soc_dapm_to_component(
248 	struct snd_soc_dapm_context *dapm)
249 {
250 	return container_of(dapm, struct snd_soc_component, dapm);
251 }
252 
253 /**
254  * snd_soc_component_get_dapm() - Returns the DAPM context associated with a
255  *  component
256  * @component: The component for which to get the DAPM context
257  */
snd_soc_component_get_dapm(struct snd_soc_component * component)258 static inline struct snd_soc_dapm_context *snd_soc_component_get_dapm(
259 	struct snd_soc_component *component)
260 {
261 	return &component->dapm;
262 }
263 
264 /**
265  * snd_soc_component_init_bias_level() - Initialize COMPONENT DAPM bias level
266  * @component: The COMPONENT for which to initialize the DAPM bias level
267  * @level: The DAPM level to initialize to
268  *
269  * Initializes the COMPONENT DAPM bias level. See snd_soc_dapm_init_bias_level()
270  */
271 static inline void
snd_soc_component_init_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)272 snd_soc_component_init_bias_level(struct snd_soc_component *component,
273 				  enum snd_soc_bias_level level)
274 {
275 	snd_soc_dapm_init_bias_level(
276 		snd_soc_component_get_dapm(component), level);
277 }
278 
279 /**
280  * snd_soc_component_get_bias_level() - Get current COMPONENT DAPM bias level
281  * @component: The COMPONENT for which to get the DAPM bias level
282  *
283  * Returns: The current DAPM bias level of the COMPONENT.
284  */
285 static inline enum snd_soc_bias_level
snd_soc_component_get_bias_level(struct snd_soc_component * component)286 snd_soc_component_get_bias_level(struct snd_soc_component *component)
287 {
288 	return snd_soc_dapm_get_bias_level(
289 		snd_soc_component_get_dapm(component));
290 }
291 
292 /**
293  * snd_soc_component_force_bias_level() - Set the COMPONENT DAPM bias level
294  * @component: The COMPONENT for which to set the level
295  * @level: The level to set to
296  *
297  * Forces the COMPONENT bias level to a specific state. See
298  * snd_soc_dapm_force_bias_level().
299  */
300 static inline int
snd_soc_component_force_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)301 snd_soc_component_force_bias_level(struct snd_soc_component *component,
302 				   enum snd_soc_bias_level level)
303 {
304 	return snd_soc_dapm_force_bias_level(
305 		snd_soc_component_get_dapm(component),
306 		level);
307 }
308 
309 /**
310  * snd_soc_dapm_kcontrol_component() - Returns the component associated to a
311  * kcontrol
312  * @kcontrol: The kcontrol
313  *
314  * This function must only be used on DAPM contexts that are known to be part of
315  * a COMPONENT (e.g. in a COMPONENT driver). Otherwise the behavior is undefined
316  */
snd_soc_dapm_kcontrol_component(struct snd_kcontrol * kcontrol)317 static inline struct snd_soc_component *snd_soc_dapm_kcontrol_component(
318 	struct snd_kcontrol *kcontrol)
319 {
320 	return snd_soc_dapm_to_component(snd_soc_dapm_kcontrol_dapm(kcontrol));
321 }
322 
323 /**
324  * snd_soc_component_cache_sync() - Sync the register cache with the hardware
325  * @component: COMPONENT to sync
326  *
327  * Note: This function will call regcache_sync()
328  */
snd_soc_component_cache_sync(struct snd_soc_component * component)329 static inline int snd_soc_component_cache_sync(
330 	struct snd_soc_component *component)
331 {
332 	return regcache_sync(component->regmap);
333 }
334 
335 void snd_soc_component_set_aux(struct snd_soc_component *component,
336 			       struct snd_soc_aux_dev *aux);
337 int snd_soc_component_init(struct snd_soc_component *component);
338 
339 /* component IO */
340 unsigned int snd_soc_component_read(struct snd_soc_component *component,
341 				      unsigned int reg);
342 int snd_soc_component_write(struct snd_soc_component *component,
343 			    unsigned int reg, unsigned int val);
344 int snd_soc_component_update_bits(struct snd_soc_component *component,
345 				  unsigned int reg, unsigned int mask,
346 				  unsigned int val);
347 int snd_soc_component_update_bits_async(struct snd_soc_component *component,
348 					unsigned int reg, unsigned int mask,
349 					unsigned int val);
350 void snd_soc_component_async_complete(struct snd_soc_component *component);
351 int snd_soc_component_test_bits(struct snd_soc_component *component,
352 				unsigned int reg, unsigned int mask,
353 				unsigned int value);
354 
355 /* component wide operations */
356 int snd_soc_component_set_sysclk(struct snd_soc_component *component,
357 				 int clk_id, int source,
358 				 unsigned int freq, int dir);
359 int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id,
360 			      int source, unsigned int freq_in,
361 			      unsigned int freq_out);
362 int snd_soc_component_set_jack(struct snd_soc_component *component,
363 			       struct snd_soc_jack *jack, void *data);
364 
365 void snd_soc_component_seq_notifier(struct snd_soc_component *component,
366 				    enum snd_soc_dapm_type type, int subseq);
367 int snd_soc_component_stream_event(struct snd_soc_component *component,
368 				   int event);
369 int snd_soc_component_set_bias_level(struct snd_soc_component *component,
370 				     enum snd_soc_bias_level level);
371 
372 void snd_soc_component_setup_regmap(struct snd_soc_component *component);
373 #ifdef CONFIG_REGMAP
374 void snd_soc_component_init_regmap(struct snd_soc_component *component,
375 				   struct regmap *regmap);
376 void snd_soc_component_exit_regmap(struct snd_soc_component *component);
377 #endif
378 
379 #define snd_soc_component_module_get_when_probe(component)\
380 	snd_soc_component_module_get(component, NULL, 0)
381 #define snd_soc_component_module_get_when_open(component, substream)	\
382 	snd_soc_component_module_get(component, substream, 1)
383 int snd_soc_component_module_get(struct snd_soc_component *component,
384 				 struct snd_pcm_substream *substream,
385 				 int upon_open);
386 #define snd_soc_component_module_put_when_remove(component)	\
387 	snd_soc_component_module_put(component, NULL, 0, 0)
388 #define snd_soc_component_module_put_when_close(component, substream, rollback) \
389 	snd_soc_component_module_put(component, substream, 1, rollback)
390 void snd_soc_component_module_put(struct snd_soc_component *component,
391 				  struct snd_pcm_substream *substream,
392 				  int upon_open, int rollback);
393 
snd_soc_component_set_drvdata(struct snd_soc_component * c,void * data)394 static inline void snd_soc_component_set_drvdata(struct snd_soc_component *c,
395 						 void *data)
396 {
397 	dev_set_drvdata(c->dev, data);
398 }
399 
snd_soc_component_get_drvdata(struct snd_soc_component * c)400 static inline void *snd_soc_component_get_drvdata(struct snd_soc_component *c)
401 {
402 	return dev_get_drvdata(c->dev);
403 }
404 
405 static inline unsigned int
snd_soc_component_active(struct snd_soc_component * component)406 snd_soc_component_active(struct snd_soc_component *component)
407 {
408 	return component->active;
409 }
410 
411 /* component pin */
412 int snd_soc_component_enable_pin(struct snd_soc_component *component,
413 				 const char *pin);
414 int snd_soc_component_enable_pin_unlocked(struct snd_soc_component *component,
415 					  const char *pin);
416 int snd_soc_component_disable_pin(struct snd_soc_component *component,
417 				  const char *pin);
418 int snd_soc_component_disable_pin_unlocked(struct snd_soc_component *component,
419 					   const char *pin);
420 int snd_soc_component_nc_pin(struct snd_soc_component *component,
421 			     const char *pin);
422 int snd_soc_component_nc_pin_unlocked(struct snd_soc_component *component,
423 				      const char *pin);
424 int snd_soc_component_get_pin_status(struct snd_soc_component *component,
425 				     const char *pin);
426 int snd_soc_component_force_enable_pin(struct snd_soc_component *component,
427 				       const char *pin);
428 int snd_soc_component_force_enable_pin_unlocked(
429 	struct snd_soc_component *component,
430 	const char *pin);
431 
432 /* component driver ops */
433 int snd_soc_component_open(struct snd_soc_component *component,
434 			   struct snd_pcm_substream *substream);
435 int snd_soc_component_close(struct snd_soc_component *component,
436 			    struct snd_pcm_substream *substream,
437 			    int rollback);
438 void snd_soc_component_suspend(struct snd_soc_component *component);
439 void snd_soc_component_resume(struct snd_soc_component *component);
440 int snd_soc_component_is_suspended(struct snd_soc_component *component);
441 int snd_soc_component_probe(struct snd_soc_component *component);
442 void snd_soc_component_remove(struct snd_soc_component *component);
443 int snd_soc_component_of_xlate_dai_id(struct snd_soc_component *component,
444 				      struct device_node *ep);
445 int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
446 					struct of_phandle_args *args,
447 					const char **dai_name);
448 
449 int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream);
450 int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
451 				unsigned int cmd, void *arg);
452 int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream);
453 int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream,
454 				    int channel, unsigned long pos,
455 				    void __user *buf, unsigned long bytes);
456 struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
457 					unsigned long offset);
458 int snd_soc_pcm_component_mmap(struct snd_pcm_substream *substream,
459 			       struct vm_area_struct *vma);
460 int snd_soc_pcm_component_new(struct snd_soc_pcm_runtime *rtd);
461 void snd_soc_pcm_component_free(struct snd_soc_pcm_runtime *rtd);
462 int snd_soc_pcm_component_prepare(struct snd_pcm_substream *substream);
463 int snd_soc_pcm_component_hw_params(struct snd_pcm_substream *substream,
464 				    struct snd_pcm_hw_params *params,
465 				    struct snd_soc_component **last);
466 void snd_soc_pcm_component_hw_free(struct snd_pcm_substream *substream,
467 				   struct snd_soc_component *last);
468 int snd_soc_pcm_component_trigger(struct snd_pcm_substream *substream,
469 				  int cmd);
470 int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,
471 					 void *stream);
472 void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
473 					  void *stream, int rollback);
474 int snd_soc_pcm_component_ack(struct snd_pcm_substream *substream);
475 
476 #endif /* __SOC_COMPONENT_H */
477