1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Universal Interface for Intel High Definition Audio Codec
4  *
5  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
6  */
7 
8 #ifndef __SOUND_HDA_CODEC_H
9 #define __SOUND_HDA_CODEC_H
10 
11 #include <linux/refcount.h>
12 #include <linux/mod_devicetable.h>
13 #include <sound/info.h>
14 #include <sound/control.h>
15 #include <sound/pcm.h>
16 #include <sound/hwdep.h>
17 #include <sound/hdaudio.h>
18 #include <sound/hda_verbs.h>
19 #include <sound/hda_regmap.h>
20 
21 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
22 #define IS_CFL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa348)
23 
24 /*
25  * Structures
26  */
27 
28 struct hda_bus;
29 struct hda_beep;
30 struct hda_codec;
31 struct hda_pcm;
32 struct hda_pcm_stream;
33 
34 /*
35  * codec bus
36  *
37  * each controller needs to creata a hda_bus to assign the accessor.
38  * A hda_bus contains several codecs in the list codec_list.
39  */
40 struct hda_bus {
41 	struct hdac_bus core;
42 
43 	struct snd_card *card;
44 
45 	struct pci_dev *pci;
46 	const char *modelname;
47 
48 	struct mutex prepare_mutex;
49 
50 	/* assigned PCMs */
51 	DECLARE_BITMAP(pcm_dev_bits, SNDRV_PCM_DEVICES);
52 
53 	/* misc op flags */
54 	unsigned int allow_bus_reset:1;	/* allow bus reset at fatal error */
55 	/* status for codec/controller */
56 	unsigned int shutdown :1;	/* being unloaded */
57 	unsigned int response_reset:1;	/* controller was reset */
58 	unsigned int in_reset:1;	/* during reset operation */
59 	unsigned int no_response_fallback:1; /* don't fallback at RIRB error */
60 	unsigned int bus_probing :1;	/* during probing process */
61 	unsigned int keep_power:1;	/* keep power up for notification */
62 	unsigned int jackpoll_in_suspend:1; /* keep jack polling during
63 					     * runtime suspend
64 					     */
65 
66 	int primary_dig_out_type;	/* primary digital out PCM type */
67 	unsigned int mixer_assigned;	/* codec addr for mixer name */
68 };
69 
70 /* from hdac_bus to hda_bus */
71 #define to_hda_bus(bus)		container_of(bus, struct hda_bus, core)
72 
73 /*
74  * codec preset
75  *
76  * Known codecs have the patch to build and set up the controls/PCMs
77  * better than the generic parser.
78  */
79 typedef int (*hda_codec_patch_t)(struct hda_codec *);
80 
81 #define HDA_CODEC_ID_SKIP_PROBE		0x00000001
82 #define HDA_CODEC_ID_GENERIC_HDMI	0x00000101
83 #define HDA_CODEC_ID_GENERIC		0x00000201
84 
85 #define HDA_CODEC_REV_ENTRY(_vid, _rev, _name, _patch) \
86 	{ .vendor_id = (_vid), .rev_id = (_rev), .name = (_name), \
87 	  .api_version = HDA_DEV_LEGACY, \
88 	  .driver_data = (unsigned long)(_patch) }
89 #define HDA_CODEC_ENTRY(_vid, _name, _patch) \
90 	HDA_CODEC_REV_ENTRY(_vid, 0, _name, _patch)
91 
92 struct hda_codec_driver {
93 	struct hdac_driver core;
94 	const struct hda_device_id *id;
95 };
96 
97 int __hda_codec_driver_register(struct hda_codec_driver *drv, const char *name,
98 			       struct module *owner);
99 #define hda_codec_driver_register(drv) \
100 	__hda_codec_driver_register(drv, KBUILD_MODNAME, THIS_MODULE)
101 void hda_codec_driver_unregister(struct hda_codec_driver *drv);
102 #define module_hda_codec_driver(drv) \
103 	module_driver(drv, hda_codec_driver_register, \
104 		      hda_codec_driver_unregister)
105 
106 /* ops set by the preset patch */
107 struct hda_codec_ops {
108 	int (*build_controls)(struct hda_codec *codec);
109 	int (*build_pcms)(struct hda_codec *codec);
110 	int (*init)(struct hda_codec *codec);
111 	void (*free)(struct hda_codec *codec);
112 	void (*unsol_event)(struct hda_codec *codec, unsigned int res);
113 	void (*set_power_state)(struct hda_codec *codec, hda_nid_t fg,
114 				unsigned int power_state);
115 #ifdef CONFIG_PM
116 	int (*suspend)(struct hda_codec *codec);
117 	int (*resume)(struct hda_codec *codec);
118 	int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid);
119 #endif
120 	void (*stream_pm)(struct hda_codec *codec, hda_nid_t nid, bool on);
121 };
122 
123 /* PCM callbacks */
124 struct hda_pcm_ops {
125 	int (*open)(struct hda_pcm_stream *info, struct hda_codec *codec,
126 		    struct snd_pcm_substream *substream);
127 	int (*close)(struct hda_pcm_stream *info, struct hda_codec *codec,
128 		     struct snd_pcm_substream *substream);
129 	int (*prepare)(struct hda_pcm_stream *info, struct hda_codec *codec,
130 		       unsigned int stream_tag, unsigned int format,
131 		       struct snd_pcm_substream *substream);
132 	int (*cleanup)(struct hda_pcm_stream *info, struct hda_codec *codec,
133 		       struct snd_pcm_substream *substream);
134 	unsigned int (*get_delay)(struct hda_pcm_stream *info,
135 				  struct hda_codec *codec,
136 				  struct snd_pcm_substream *substream);
137 };
138 
139 /* PCM information for each substream */
140 struct hda_pcm_stream {
141 	unsigned int substreams;	/* number of substreams, 0 = not exist*/
142 	unsigned int channels_min;	/* min. number of channels */
143 	unsigned int channels_max;	/* max. number of channels */
144 	hda_nid_t nid;	/* default NID to query rates/formats/bps, or set up */
145 	u32 rates;	/* supported rates */
146 	u64 formats;	/* supported formats (SNDRV_PCM_FMTBIT_) */
147 	unsigned int maxbps;	/* supported max. bit per sample */
148 	const struct snd_pcm_chmap_elem *chmap; /* chmap to override */
149 	struct hda_pcm_ops ops;
150 };
151 
152 /* PCM types */
153 enum {
154 	HDA_PCM_TYPE_AUDIO,
155 	HDA_PCM_TYPE_SPDIF,
156 	HDA_PCM_TYPE_HDMI,
157 	HDA_PCM_TYPE_MODEM,
158 	HDA_PCM_NTYPES
159 };
160 
161 #define SNDRV_PCM_INVALID_DEVICE	(-1)
162 /* for PCM creation */
163 struct hda_pcm {
164 	char *name;
165 	struct hda_pcm_stream stream[2];
166 	unsigned int pcm_type;	/* HDA_PCM_TYPE_XXX */
167 	int device;		/* device number to assign */
168 	struct snd_pcm *pcm;	/* assigned PCM instance */
169 	bool own_chmap;		/* codec driver provides own channel maps */
170 	/* private: */
171 	struct hda_codec *codec;
172 	struct list_head list;
173 	unsigned int disconnected:1;
174 };
175 
176 /* codec information */
177 struct hda_codec {
178 	struct hdac_device core;
179 	struct hda_bus *bus;
180 	struct snd_card *card;
181 	unsigned int addr;	/* codec addr*/
182 	u32 probe_id; /* overridden id for probing */
183 
184 	/* detected preset */
185 	const struct hda_device_id *preset;
186 	const char *modelname;	/* model name for preset */
187 
188 	/* set by patch */
189 	struct hda_codec_ops patch_ops;
190 
191 	/* PCM to create, set by patch_ops.build_pcms callback */
192 	struct list_head pcm_list_head;
193 	refcount_t pcm_ref;
194 	wait_queue_head_t remove_sleep;
195 
196 	/* codec specific info */
197 	void *spec;
198 
199 	/* beep device */
200 	struct hda_beep *beep;
201 	unsigned int beep_mode;
202 
203 	/* widget capabilities cache */
204 	u32 *wcaps;
205 
206 	struct snd_array mixers;	/* list of assigned mixer elements */
207 	struct snd_array nids;		/* list of mapped mixer elements */
208 
209 	struct list_head conn_list;	/* linked-list of connection-list */
210 
211 	struct mutex spdif_mutex;
212 	struct mutex control_mutex;
213 	struct snd_array spdif_out;
214 	unsigned int spdif_in_enable;	/* SPDIF input enable? */
215 	const hda_nid_t *follower_dig_outs; /* optional digital out follower widgets */
216 	struct snd_array init_pins;	/* initial (BIOS) pin configurations */
217 	struct snd_array driver_pins;	/* pin configs set by codec parser */
218 	struct snd_array cvt_setups;	/* audio convert setups */
219 
220 	struct mutex user_mutex;
221 #ifdef CONFIG_SND_HDA_RECONFIG
222 	struct snd_array init_verbs;	/* additional init verbs */
223 	struct snd_array hints;		/* additional hints */
224 	struct snd_array user_pins;	/* default pin configs to override */
225 #endif
226 
227 #ifdef CONFIG_SND_HDA_HWDEP
228 	struct snd_hwdep *hwdep;	/* assigned hwdep device */
229 #endif
230 
231 	/* misc flags */
232 	unsigned int configured:1; /* codec was configured */
233 	unsigned int in_freeing:1; /* being released */
234 	unsigned int registered:1; /* codec was registered */
235 	unsigned int display_power_control:1; /* needs display power */
236 	unsigned int spdif_status_reset :1; /* needs to toggle SPDIF for each
237 					     * status change
238 					     * (e.g. Realtek codecs)
239 					     */
240 	unsigned int pin_amp_workaround:1; /* pin out-amp takes index
241 					    * (e.g. Conexant codecs)
242 					    */
243 	unsigned int single_adc_amp:1; /* adc in-amp takes no index
244 					* (e.g. CX20549 codec)
245 					*/
246 	unsigned int no_sticky_stream:1; /* no sticky-PCM stream assignment */
247 	unsigned int pins_shutup:1;	/* pins are shut up */
248 	unsigned int no_trigger_sense:1; /* don't trigger at pin-sensing */
249 	unsigned int no_jack_detect:1;	/* Machine has no jack-detection */
250 	unsigned int inv_eapd:1; /* broken h/w: inverted EAPD control */
251 	unsigned int inv_jack_detect:1;	/* broken h/w: inverted detection bit */
252 	unsigned int pcm_format_first:1; /* PCM format must be set first */
253 	unsigned int cached_write:1;	/* write only to caches */
254 	unsigned int dp_mst:1; /* support DP1.2 Multi-stream transport */
255 	unsigned int dump_coef:1; /* dump processing coefs in codec proc file */
256 	unsigned int power_save_node:1; /* advanced PM for each widget */
257 	unsigned int auto_runtime_pm:1; /* enable automatic codec runtime pm */
258 	unsigned int force_pin_prefix:1; /* Add location prefix */
259 	unsigned int link_down_at_suspend:1; /* link down at runtime suspend */
260 	unsigned int relaxed_resume:1;	/* don't resume forcibly for jack */
261 	unsigned int forced_resume:1; /* forced resume for jack */
262 	unsigned int mst_no_extra_pcms:1; /* no backup PCMs for DP-MST */
263 
264 #ifdef CONFIG_PM
265 	unsigned long power_on_acct;
266 	unsigned long power_off_acct;
267 	unsigned long power_jiffies;
268 #endif
269 
270 	/* filter the requested power state per nid */
271 	unsigned int (*power_filter)(struct hda_codec *codec, hda_nid_t nid,
272 				     unsigned int power_state);
273 
274 	/* codec-specific additional proc output */
275 	void (*proc_widget_hook)(struct snd_info_buffer *buffer,
276 				 struct hda_codec *codec, hda_nid_t nid);
277 
278 	/* jack detection */
279 	struct snd_array jacktbl;
280 	unsigned long jackpoll_interval; /* In jiffies. Zero means no poll, rely on unsol events */
281 	struct delayed_work jackpoll_work;
282 
283 	int depop_delay; /* depop delay in ms, -1 for default delay time */
284 
285 	/* fix-up list */
286 	int fixup_id;
287 	const struct hda_fixup *fixup_list;
288 	const char *fixup_name;
289 
290 	/* additional init verbs */
291 	struct snd_array verbs;
292 };
293 
294 #define dev_to_hda_codec(_dev)	container_of(_dev, struct hda_codec, core.dev)
295 #define hda_codec_dev(_dev)	(&(_dev)->core.dev)
296 
297 #define hdac_to_hda_priv(_hdac) \
298 			container_of(_hdac, struct hdac_hda_priv, codec.core)
299 #define hdac_to_hda_codec(_hdac) container_of(_hdac, struct hda_codec, core)
300 
301 #define list_for_each_codec(c, bus) \
302 	list_for_each_entry(c, &(bus)->core.codec_list, core.list)
303 #define list_for_each_codec_safe(c, n, bus)				\
304 	list_for_each_entry_safe(c, n, &(bus)->core.codec_list, core.list)
305 
306 /* snd_hda_codec_read/write optional flags */
307 #define HDA_RW_NO_RESPONSE_FALLBACK	(1 << 0)
308 
309 /*
310  * constructors
311  */
312 __printf(3, 4) struct hda_codec *
313 snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr,
314 			  const char *fmt, ...);
315 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
316 		      unsigned int codec_addr, struct hda_codec **codecp);
317 int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
318 		      unsigned int codec_addr, struct hda_codec *codec,
319 		      bool snddev_managed);
320 int snd_hda_codec_configure(struct hda_codec *codec);
321 int snd_hda_codec_update_widgets(struct hda_codec *codec);
322 void snd_hda_codec_register(struct hda_codec *codec);
323 void snd_hda_codec_unregister(struct hda_codec *codec);
324 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec);
325 
326 /*
327  * low level functions
328  */
329 static inline unsigned int
snd_hda_codec_read(struct hda_codec * codec,hda_nid_t nid,int flags,unsigned int verb,unsigned int parm)330 snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid,
331 				int flags,
332 				unsigned int verb, unsigned int parm)
333 {
334 	return snd_hdac_codec_read(&codec->core, nid, flags, verb, parm);
335 }
336 
337 static inline int
snd_hda_codec_write(struct hda_codec * codec,hda_nid_t nid,int flags,unsigned int verb,unsigned int parm)338 snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int flags,
339 			unsigned int verb, unsigned int parm)
340 {
341 	return snd_hdac_codec_write(&codec->core, nid, flags, verb, parm);
342 }
343 
344 #define snd_hda_param_read(codec, nid, param) \
345 	snd_hdac_read_parm(&(codec)->core, nid, param)
346 #define snd_hda_get_sub_nodes(codec, nid, start_nid) \
347 	snd_hdac_get_sub_nodes(&(codec)->core, nid, start_nid)
348 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
349 			    hda_nid_t *conn_list, int max_conns);
350 static inline int
snd_hda_get_num_conns(struct hda_codec * codec,hda_nid_t nid)351 snd_hda_get_num_conns(struct hda_codec *codec, hda_nid_t nid)
352 {
353 	return snd_hda_get_connections(codec, nid, NULL, 0);
354 }
355 
356 #define snd_hda_get_raw_connections(codec, nid, list, max_conns) \
357 	snd_hdac_get_connections(&(codec)->core, nid, list, max_conns)
358 #define snd_hda_get_num_raw_conns(codec, nid) \
359 	snd_hdac_get_connections(&(codec)->core, nid, NULL, 0)
360 
361 int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid,
362 			  const hda_nid_t **listp);
363 int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int nums,
364 			  const hda_nid_t *list);
365 int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
366 			   hda_nid_t nid, int recursive);
367 unsigned int snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid);
368 int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
369 			u8 *dev_list, int max_devices);
370 int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid);
371 int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id);
372 
373 struct hda_verb {
374 	hda_nid_t nid;
375 	u32 verb;
376 	u32 param;
377 };
378 
379 void snd_hda_sequence_write(struct hda_codec *codec,
380 			    const struct hda_verb *seq);
381 
382 /* cached write */
383 static inline int
snd_hda_codec_write_cache(struct hda_codec * codec,hda_nid_t nid,int flags,unsigned int verb,unsigned int parm)384 snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
385 			  int flags, unsigned int verb, unsigned int parm)
386 {
387 	return snd_hdac_regmap_write(&codec->core, nid, verb, parm);
388 }
389 
390 /* the struct for codec->pin_configs */
391 struct hda_pincfg {
392 	hda_nid_t nid;
393 	unsigned char ctrl;	/* original pin control value */
394 	unsigned char target;	/* target pin control value */
395 	unsigned int cfg;	/* default configuration */
396 };
397 
398 unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid);
399 int snd_hda_codec_set_pincfg(struct hda_codec *codec, hda_nid_t nid,
400 			     unsigned int cfg);
401 int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
402 		       hda_nid_t nid, unsigned int cfg); /* for hwdep */
403 void snd_hda_shutup_pins(struct hda_codec *codec);
404 
405 /* SPDIF controls */
406 struct hda_spdif_out {
407 	hda_nid_t nid;		/* Converter nid values relate to */
408 	unsigned int status;	/* IEC958 status bits */
409 	unsigned short ctls;	/* SPDIF control bits */
410 };
411 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec,
412 					       hda_nid_t nid);
413 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx);
414 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid);
415 
416 /*
417  * Mixer
418  */
419 int snd_hda_codec_build_controls(struct hda_codec *codec);
420 
421 /*
422  * PCM
423  */
424 int snd_hda_codec_parse_pcms(struct hda_codec *codec);
425 int snd_hda_codec_build_pcms(struct hda_codec *codec);
426 
427 __printf(2, 3)
428 struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
429 				      const char *fmt, ...);
430 
431 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec);
432 
snd_hda_codec_pcm_get(struct hda_pcm * pcm)433 static inline void snd_hda_codec_pcm_get(struct hda_pcm *pcm)
434 {
435 	refcount_inc(&pcm->codec->pcm_ref);
436 }
437 void snd_hda_codec_pcm_put(struct hda_pcm *pcm);
438 
439 int snd_hda_codec_prepare(struct hda_codec *codec,
440 			  struct hda_pcm_stream *hinfo,
441 			  unsigned int stream,
442 			  unsigned int format,
443 			  struct snd_pcm_substream *substream);
444 void snd_hda_codec_cleanup(struct hda_codec *codec,
445 			   struct hda_pcm_stream *hinfo,
446 			   struct snd_pcm_substream *substream);
447 
448 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
449 				u32 stream_tag,
450 				int channel_id, int format);
451 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
452 				    int do_now);
453 #define snd_hda_codec_cleanup_stream(codec, nid) \
454 	__snd_hda_codec_cleanup_stream(codec, nid, 0)
455 
456 #define snd_hda_query_supported_pcm(codec, nid, ratesp, fmtsp, bpsp) \
457 	snd_hdac_query_supported_pcm(&(codec)->core, nid, ratesp, fmtsp, bpsp)
458 #define snd_hda_is_supported_format(codec, nid, fmt) \
459 	snd_hdac_is_supported_format(&(codec)->core, nid, fmt)
460 
461 extern const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[];
462 
463 int snd_hda_attach_pcm_stream(struct hda_bus *_bus, struct hda_codec *codec,
464 			      struct hda_pcm *cpcm);
465 
466 /*
467  * Misc
468  */
469 void snd_hda_get_codec_name(struct hda_codec *codec, char *name, int namelen);
470 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg,
471 				    unsigned int power_state);
472 
473 int snd_hda_lock_devices(struct hda_bus *bus);
474 void snd_hda_unlock_devices(struct hda_bus *bus);
475 void snd_hda_bus_reset(struct hda_bus *bus);
476 void snd_hda_bus_reset_codecs(struct hda_bus *bus);
477 
478 int snd_hda_codec_set_name(struct hda_codec *codec, const char *name);
479 
480 /*
481  * power management
482  */
483 extern const struct dev_pm_ops hda_codec_driver_pm;
484 
485 static inline
hda_call_check_power_status(struct hda_codec * codec,hda_nid_t nid)486 int hda_call_check_power_status(struct hda_codec *codec, hda_nid_t nid)
487 {
488 #ifdef CONFIG_PM
489 	if (codec->patch_ops.check_power_status)
490 		return codec->patch_ops.check_power_status(codec, nid);
491 #endif
492 	return 0;
493 }
494 
495 /*
496  * power saving
497  */
498 #define snd_hda_power_up(codec)		snd_hdac_power_up(&(codec)->core)
499 #define snd_hda_power_up_pm(codec)	snd_hdac_power_up_pm(&(codec)->core)
500 #define snd_hda_power_down(codec)	snd_hdac_power_down(&(codec)->core)
501 #define snd_hda_power_down_pm(codec)	snd_hdac_power_down_pm(&(codec)->core)
502 #ifdef CONFIG_PM
503 void snd_hda_codec_set_power_save(struct hda_codec *codec, int delay);
504 void snd_hda_set_power_save(struct hda_bus *bus, int delay);
505 void snd_hda_update_power_acct(struct hda_codec *codec);
506 #else
snd_hda_codec_set_power_save(struct hda_codec * codec,int delay)507 static inline void snd_hda_codec_set_power_save(struct hda_codec *codec, int delay) {}
snd_hda_set_power_save(struct hda_bus * bus,int delay)508 static inline void snd_hda_set_power_save(struct hda_bus *bus, int delay) {}
509 #endif
510 
hda_codec_need_resume(struct hda_codec * codec)511 static inline bool hda_codec_need_resume(struct hda_codec *codec)
512 {
513 	return !codec->relaxed_resume && codec->jacktbl.used;
514 }
515 
516 #ifdef CONFIG_SND_HDA_PATCH_LOADER
517 /*
518  * patch firmware
519  */
520 int snd_hda_load_patch(struct hda_bus *bus, size_t size, const void *buf);
521 #endif
522 
523 #ifdef CONFIG_SND_HDA_DSP_LOADER
524 int snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format,
525 				   unsigned int size,
526 				   struct snd_dma_buffer *bufp);
527 void snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start);
528 void snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec,
529 				    struct snd_dma_buffer *dmab);
530 #else
531 static inline int
snd_hda_codec_load_dsp_prepare(struct hda_codec * codec,unsigned int format,unsigned int size,struct snd_dma_buffer * bufp)532 snd_hda_codec_load_dsp_prepare(struct hda_codec *codec, unsigned int format,
533 				unsigned int size,
534 				struct snd_dma_buffer *bufp)
535 {
536 	return -ENOSYS;
537 }
538 static inline void
snd_hda_codec_load_dsp_trigger(struct hda_codec * codec,bool start)539 snd_hda_codec_load_dsp_trigger(struct hda_codec *codec, bool start) {}
540 static inline void
snd_hda_codec_load_dsp_cleanup(struct hda_codec * codec,struct snd_dma_buffer * dmab)541 snd_hda_codec_load_dsp_cleanup(struct hda_codec *codec,
542 				struct snd_dma_buffer *dmab) {}
543 #endif
544 
545 #endif /* __SOUND_HDA_CODEC_H */
546