2 * linux/sound/soc.h -- ALSA SoC Layer
4 * Author: Liam Girdwood
5 * Created: Aug 11th 2005
6 * Copyright: Wolfson Microelectronics. PLC.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #ifndef __LINUX_SND_SOC_H
14 #define __LINUX_SND_SOC_H
16 #include <linux/platform_device.h>
17 #include <linux/types.h>
18 #include <linux/notifier.h>
19 #include <linux/workqueue.h>
20 #include <linux/interrupt.h>
21 #include <linux/kernel.h>
22 #include <linux/regmap.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/control.h>
26 #include <sound/ac97_codec.h>
29 * Convenience kcontrol builders
31 #define SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, xmax, xinvert) \
32 ((unsigned long)&(struct soc_mixer_control) \
33 {.reg = xreg, .rreg = xreg, .shift = shift_left, \
34 .rshift = shift_right, .max = xmax, .platform_max = xmax, \
36 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
37 SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert)
38 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
39 ((unsigned long)&(struct soc_mixer_control) \
40 {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
41 #define SOC_DOUBLE_R_VALUE(xlreg, xrreg, xshift, xmax, xinvert) \
42 ((unsigned long)&(struct soc_mixer_control) \
43 {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
44 .max = xmax, .platform_max = xmax, .invert = xinvert})
45 #define SOC_DOUBLE_R_RANGE_VALUE(xlreg, xrreg, xshift, xmin, xmax, xinvert) \
46 ((unsigned long)&(struct soc_mixer_control) \
47 {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
48 .min = xmin, .max = xmax, .platform_max = xmax, .invert = xinvert})
49 #define SOC_SINGLE(xname, reg, shift, max, invert) \
50 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
51 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
52 .put = snd_soc_put_volsw, \
53 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
54 #define SOC_SINGLE_RANGE(xname, xreg, xshift, xmin, xmax, xinvert) \
55 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
56 .info = snd_soc_info_volsw_range, .get = snd_soc_get_volsw_range, \
57 .put = snd_soc_put_volsw_range, \
58 .private_value = (unsigned long)&(struct soc_mixer_control) \
59 {.reg = xreg, .shift = xshift, .min = xmin,\
60 .max = xmax, .platform_max = xmax, .invert = xinvert} }
61 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
62 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
63 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
64 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
65 .tlv.p = (tlv_array), \
66 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
67 .put = snd_soc_put_volsw, \
68 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
69 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \
70 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
71 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
72 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
73 .tlv.p = (tlv_array),\
74 .info = snd_soc_info_volsw, \
75 .get = snd_soc_get_volsw_sx,\
76 .put = snd_soc_put_volsw_sx, \
77 .private_value = (unsigned long)&(struct soc_mixer_control) \
78 {.reg = xreg, .rreg = xreg, \
79 .shift = xshift, .rshift = xshift, \
80 .max = xmax, .min = xmin} }
81 #define SOC_SINGLE_RANGE_TLV(xname, xreg, xshift, xmin, xmax, xinvert, tlv_array) \
82 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
83 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
84 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
85 .tlv.p = (tlv_array), \
86 .info = snd_soc_info_volsw_range, \
87 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
88 .private_value = (unsigned long)&(struct soc_mixer_control) \
89 {.reg = xreg, .shift = xshift, .min = xmin,\
90 .max = xmax, .platform_max = xmax, .invert = xinvert} }
91 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
92 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
93 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
94 .put = snd_soc_put_volsw, \
95 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
97 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
98 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
99 .info = snd_soc_info_volsw, \
100 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
101 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
103 #define SOC_DOUBLE_R_RANGE(xname, reg_left, reg_right, xshift, xmin, \
105 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
106 .info = snd_soc_info_volsw_range, \
107 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
108 .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
109 xshift, xmin, xmax, xinvert) }
110 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
111 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
112 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
113 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
114 .tlv.p = (tlv_array), \
115 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
116 .put = snd_soc_put_volsw, \
117 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
119 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
120 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
121 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
122 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
123 .tlv.p = (tlv_array), \
124 .info = snd_soc_info_volsw, \
125 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
126 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
128 #define SOC_DOUBLE_R_RANGE_TLV(xname, reg_left, reg_right, xshift, xmin, \
129 xmax, xinvert, tlv_array) \
130 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
131 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
132 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
133 .tlv.p = (tlv_array), \
134 .info = snd_soc_info_volsw_range, \
135 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
136 .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
137 xshift, xmin, xmax, xinvert) }
138 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \
139 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
140 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
141 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
142 .tlv.p = (tlv_array), \
143 .info = snd_soc_info_volsw, \
144 .get = snd_soc_get_volsw_sx, \
145 .put = snd_soc_put_volsw_sx, \
146 .private_value = (unsigned long)&(struct soc_mixer_control) \
147 {.reg = xreg, .rreg = xrreg, \
148 .shift = xshift, .rshift = xshift, \
149 .max = xmax, .min = xmin} }
150 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
151 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
152 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
153 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
154 .tlv.p = (tlv_array), \
155 .info = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
156 .put = snd_soc_put_volsw_s8, \
157 .private_value = (unsigned long)&(struct soc_mixer_control) \
158 {.reg = xreg, .min = xmin, .max = xmax, \
159 .platform_max = xmax} }
160 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
161 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
162 .max = xmax, .texts = xtexts }
163 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
164 SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
165 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
166 { .max = xmax, .texts = xtexts }
167 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
168 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
169 .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
170 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
171 SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
172 #define SOC_ENUM(xname, xenum) \
173 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
174 .info = snd_soc_info_enum_double, \
175 .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
176 .private_value = (unsigned long)&xenum }
177 #define SOC_VALUE_ENUM(xname, xenum) \
178 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
179 .info = snd_soc_info_enum_double, \
180 .get = snd_soc_get_value_enum_double, \
181 .put = snd_soc_put_value_enum_double, \
182 .private_value = (unsigned long)&xenum }
183 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
184 xhandler_get, xhandler_put) \
185 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
186 .info = snd_soc_info_volsw, \
187 .get = xhandler_get, .put = xhandler_put, \
188 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
189 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\
190 xhandler_get, xhandler_put) \
191 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
192 .info = snd_soc_info_volsw, \
193 .get = xhandler_get, .put = xhandler_put, \
195 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert) }
196 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
197 xhandler_get, xhandler_put, tlv_array) \
198 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
199 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
200 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
201 .tlv.p = (tlv_array), \
202 .info = snd_soc_info_volsw, \
203 .get = xhandler_get, .put = xhandler_put, \
204 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
205 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
206 xhandler_get, xhandler_put, tlv_array) \
207 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
208 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
209 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
210 .tlv.p = (tlv_array), \
211 .info = snd_soc_info_volsw, \
212 .get = xhandler_get, .put = xhandler_put, \
213 .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \
215 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
216 xhandler_get, xhandler_put, tlv_array) \
217 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
218 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
219 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
220 .tlv.p = (tlv_array), \
221 .info = snd_soc_info_volsw, \
222 .get = xhandler_get, .put = xhandler_put, \
223 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
225 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
226 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
227 .info = snd_soc_info_bool_ext, \
228 .get = xhandler_get, .put = xhandler_put, \
229 .private_value = xdata }
230 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
231 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
232 .info = snd_soc_info_enum_ext, \
233 .get = xhandler_get, .put = xhandler_put, \
234 .private_value = (unsigned long)&xenum }
236 #define SND_SOC_BYTES(xname, xbase, xregs) \
237 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
238 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
239 .put = snd_soc_bytes_put, .private_value = \
240 ((unsigned long)&(struct soc_bytes) \
241 {.base = xbase, .num_regs = xregs }) }
243 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask) \
244 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
245 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
246 .put = snd_soc_bytes_put, .private_value = \
247 ((unsigned long)&(struct soc_bytes) \
248 {.base = xbase, .num_regs = xregs, \
251 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \
252 xmin, xmax, xinvert) \
253 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
254 .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \
255 .put = snd_soc_put_xr_sx, \
256 .private_value = (unsigned long)&(struct soc_mreg_control) \
257 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
258 .invert = xinvert, .min = xmin, .max = xmax} }
260 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
261 SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
262 snd_soc_get_strobe, snd_soc_put_strobe)
265 * Simplified versions of above macros, declaring a struct and calculating
266 * ARRAY_SIZE internally
268 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
269 struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
270 ARRAY_SIZE(xtexts), xtexts)
271 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
272 SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
273 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
274 struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
275 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
276 struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
277 ARRAY_SIZE(xtexts), xtexts, xvalues)
278 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
279 SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
282 * Component probe and remove ordering levels for components with runtime
285 #define SND_SOC_COMP_ORDER_FIRST -2
286 #define SND_SOC_COMP_ORDER_EARLY -1
287 #define SND_SOC_COMP_ORDER_NORMAL 0
288 #define SND_SOC_COMP_ORDER_LATE 1
289 #define SND_SOC_COMP_ORDER_LAST 2
294 * @ON: Bias is fully on for audio playback and capture operations.
295 * @PREPARE: Prepare for audio operations. Called before DAPM switching for
296 * stream start and stop operations.
297 * @STANDBY: Low power standby state when no playback/capture operations are
298 * in progress. NOTE: The transition time between STANDBY and ON
299 * should be as fast as possible and no longer than 10ms.
300 * @OFF: Power Off. No restrictions on transition times.
302 enum snd_soc_bias_level {
303 SND_SOC_BIAS_OFF = 0,
304 SND_SOC_BIAS_STANDBY = 1,
305 SND_SOC_BIAS_PREPARE = 2,
312 struct snd_soc_pcm_stream;
314 struct snd_soc_pcm_runtime;
316 struct snd_soc_dai_driver;
317 struct snd_soc_platform;
318 struct snd_soc_dai_link;
319 struct snd_soc_platform_driver;
320 struct snd_soc_codec;
321 struct snd_soc_codec_driver;
324 struct snd_soc_jack_zone;
325 struct snd_soc_jack_pin;
326 struct snd_soc_cache_ops;
327 #include <sound/soc-dapm.h>
328 #include <sound/soc-dpcm.h>
330 #ifdef CONFIG_GPIOLIB
331 struct snd_soc_jack_gpio;
334 typedef int (*hw_write_t)(void *,const char* ,int);
336 extern struct snd_ac97_bus_ops soc_ac97_ops;
338 enum snd_soc_control_type {
344 enum snd_soc_compress_type {
345 SND_SOC_FLAT_COMPRESSION = 1,
348 enum snd_soc_pcm_subclass {
349 SND_SOC_PCM_CLASS_PCM = 0,
350 SND_SOC_PCM_CLASS_BE = 1,
353 enum snd_soc_card_subclass {
354 SND_SOC_CARD_CLASS_INIT = 0,
355 SND_SOC_CARD_CLASS_RUNTIME = 1,
358 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
359 int source, unsigned int freq, int dir);
360 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
361 unsigned int freq_in, unsigned int freq_out);
363 int snd_soc_register_card(struct snd_soc_card *card);
364 int snd_soc_unregister_card(struct snd_soc_card *card);
365 int snd_soc_suspend(struct device *dev);
366 int snd_soc_resume(struct device *dev);
367 int snd_soc_poweroff(struct device *dev);
368 int snd_soc_register_platform(struct device *dev,
369 struct snd_soc_platform_driver *platform_drv);
370 void snd_soc_unregister_platform(struct device *dev);
371 int snd_soc_register_codec(struct device *dev,
372 const struct snd_soc_codec_driver *codec_drv,
373 struct snd_soc_dai_driver *dai_drv, int num_dai);
374 void snd_soc_unregister_codec(struct device *dev);
375 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
377 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
379 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
381 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
382 int addr_bits, int data_bits,
383 enum snd_soc_control_type control);
384 int snd_soc_cache_sync(struct snd_soc_codec *codec);
385 int snd_soc_cache_init(struct snd_soc_codec *codec);
386 int snd_soc_cache_exit(struct snd_soc_codec *codec);
387 int snd_soc_cache_write(struct snd_soc_codec *codec,
388 unsigned int reg, unsigned int value);
389 int snd_soc_cache_read(struct snd_soc_codec *codec,
390 unsigned int reg, unsigned int *value);
391 int snd_soc_default_volatile_register(struct snd_soc_codec *codec,
393 int snd_soc_default_readable_register(struct snd_soc_codec *codec,
395 int snd_soc_default_writable_register(struct snd_soc_codec *codec,
397 int snd_soc_platform_read(struct snd_soc_platform *platform,
399 int snd_soc_platform_write(struct snd_soc_platform *platform,
400 unsigned int reg, unsigned int val);
401 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
403 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
404 const char *dai_link, int stream);
405 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
406 const char *dai_link);
408 /* Utility functions to get clock rates from various things */
409 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
410 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
411 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
412 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
414 /* set runtime hw params */
415 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
416 const struct snd_pcm_hardware *hw);
418 int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
419 int cmd, struct snd_soc_platform *platform);
422 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
423 struct snd_soc_jack *jack);
424 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
425 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
426 struct snd_soc_jack_pin *pins);
427 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
428 struct notifier_block *nb);
429 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
430 struct notifier_block *nb);
431 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
432 struct snd_soc_jack_zone *zones);
433 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
434 #ifdef CONFIG_GPIOLIB
435 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
436 struct snd_soc_jack_gpio *gpios);
437 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
438 struct snd_soc_jack_gpio *gpios);
441 /* codec register bit access */
442 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
443 unsigned int mask, unsigned int value);
444 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
445 unsigned short reg, unsigned int mask,
447 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
448 unsigned int mask, unsigned int value);
450 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
451 struct snd_ac97_bus_ops *ops, int num);
452 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
457 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
458 void *data, const char *long_name,
460 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
461 const struct snd_kcontrol_new *controls, int num_controls);
462 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
463 const struct snd_kcontrol_new *controls, int num_controls);
464 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
465 const struct snd_kcontrol_new *controls, int num_controls);
466 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
467 const struct snd_kcontrol_new *controls, int num_controls);
468 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
469 struct snd_ctl_elem_info *uinfo);
470 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
471 struct snd_ctl_elem_info *uinfo);
472 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
473 struct snd_ctl_elem_value *ucontrol);
474 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
475 struct snd_ctl_elem_value *ucontrol);
476 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
477 struct snd_ctl_elem_value *ucontrol);
478 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
479 struct snd_ctl_elem_value *ucontrol);
480 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
481 struct snd_ctl_elem_info *uinfo);
482 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
483 struct snd_ctl_elem_info *uinfo);
484 #define snd_soc_info_bool_ext snd_ctl_boolean_mono_info
485 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
486 struct snd_ctl_elem_value *ucontrol);
487 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
488 struct snd_ctl_elem_value *ucontrol);
489 #define snd_soc_get_volsw_2r snd_soc_get_volsw
490 #define snd_soc_put_volsw_2r snd_soc_put_volsw
491 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
492 struct snd_ctl_elem_value *ucontrol);
493 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
494 struct snd_ctl_elem_value *ucontrol);
495 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
496 struct snd_ctl_elem_info *uinfo);
497 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
498 struct snd_ctl_elem_value *ucontrol);
499 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
500 struct snd_ctl_elem_value *ucontrol);
501 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
502 struct snd_ctl_elem_info *uinfo);
503 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
504 struct snd_ctl_elem_value *ucontrol);
505 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
506 struct snd_ctl_elem_value *ucontrol);
507 int snd_soc_limit_volume(struct snd_soc_codec *codec,
508 const char *name, int max);
509 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
510 struct snd_ctl_elem_info *uinfo);
511 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
512 struct snd_ctl_elem_value *ucontrol);
513 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
514 struct snd_ctl_elem_value *ucontrol);
515 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
516 struct snd_ctl_elem_info *uinfo);
517 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
518 struct snd_ctl_elem_value *ucontrol);
519 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
520 struct snd_ctl_elem_value *ucontrol);
521 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
522 struct snd_ctl_elem_value *ucontrol);
523 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
524 struct snd_ctl_elem_value *ucontrol);
527 * struct snd_soc_reg_access - Describes whether a given register is
528 * readable, writable or volatile.
530 * @reg: the register number
531 * @read: whether this register is readable
532 * @write: whether this register is writable
533 * @vol: whether this register is volatile
535 struct snd_soc_reg_access {
543 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
545 * @pin: name of the pin to update
546 * @mask: bits to check for in reported jack status
547 * @invert: if non-zero then pin is enabled when status is not reported
549 struct snd_soc_jack_pin {
550 struct list_head list;
557 * struct snd_soc_jack_zone - Describes voltage zones of jack detection
559 * @min_mv: start voltage in mv
560 * @max_mv: end voltage in mv
561 * @jack_type: type of jack that is expected for this voltage
562 * @debounce_time: debounce_time for jack, codec driver should wait for this
563 * duration before reading the adc for voltages
564 * @:list: list container
566 struct snd_soc_jack_zone {
569 unsigned int jack_type;
570 unsigned int debounce_time;
571 struct list_head list;
575 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
579 * @report: value to report when jack detected
580 * @invert: report presence in low state
581 * @debouce_time: debouce time in ms
582 * @wake: enable as wake source
583 * @jack_status_check: callback function which overrides the detection
584 * to provide more complex checks (eg, reading an
587 #ifdef CONFIG_GPIOLIB
588 struct snd_soc_jack_gpio {
596 struct snd_soc_jack *jack;
597 struct delayed_work work;
599 int (*jack_status_check)(void);
603 struct snd_soc_jack {
605 struct snd_jack *jack;
606 struct snd_soc_codec *codec;
607 struct list_head pins;
609 struct blocking_notifier_head notifier;
610 struct list_head jack_zones;
613 /* SoC PCM stream information */
614 struct snd_soc_pcm_stream {
615 const char *stream_name;
616 u64 formats; /* SNDRV_PCM_FMTBIT_* */
617 unsigned int rates; /* SNDRV_PCM_RATE_* */
618 unsigned int rate_min; /* min rate */
619 unsigned int rate_max; /* max rate */
620 unsigned int channels_min; /* min channels */
621 unsigned int channels_max; /* max channels */
622 unsigned int sig_bits; /* number of bits of content */
627 int (*startup)(struct snd_pcm_substream *);
628 void (*shutdown)(struct snd_pcm_substream *);
629 int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
630 int (*hw_free)(struct snd_pcm_substream *);
631 int (*prepare)(struct snd_pcm_substream *);
632 int (*trigger)(struct snd_pcm_substream *, int);
636 struct snd_soc_cache_ops {
638 enum snd_soc_compress_type id;
639 int (*init)(struct snd_soc_codec *codec);
640 int (*exit)(struct snd_soc_codec *codec);
641 int (*read)(struct snd_soc_codec *codec, unsigned int reg,
642 unsigned int *value);
643 int (*write)(struct snd_soc_codec *codec, unsigned int reg,
645 int (*sync)(struct snd_soc_codec *codec);
648 /* SoC Audio Codec device */
649 struct snd_soc_codec {
651 const char *name_prefix;
654 const struct snd_soc_codec_driver *driver;
657 struct snd_soc_card *card;
658 struct list_head list;
659 struct list_head card_list;
661 enum snd_soc_compress_type compress_type;
662 size_t reg_size; /* reg_cache_size * reg_word_size */
663 int (*volatile_register)(struct snd_soc_codec *, unsigned int);
664 int (*readable_register)(struct snd_soc_codec *, unsigned int);
665 int (*writable_register)(struct snd_soc_codec *, unsigned int);
668 struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */
670 unsigned int cache_bypass:1; /* Suppress access to the cache */
671 unsigned int suspended:1; /* Codec is in suspend PM state */
672 unsigned int probed:1; /* Codec has been probed */
673 unsigned int ac97_registered:1; /* Codec has been AC97 registered */
674 unsigned int ac97_created:1; /* Codec has been created by SoC */
675 unsigned int sysfs_registered:1; /* codec has been sysfs registered */
676 unsigned int cache_init:1; /* codec cache has been initialized */
677 unsigned int using_regmap:1; /* using regmap access */
678 u32 cache_only; /* Suppress writes to hardware */
679 u32 cache_sync; /* Cache needs to be synced to hardware */
682 void *control_data; /* codec control (i2c/3wire) data */
683 enum snd_soc_control_type control_type;
685 unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
686 unsigned int (*read)(struct snd_soc_codec *, unsigned int);
687 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
688 int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t);
690 const void *reg_def_copy;
691 const struct snd_soc_cache_ops *cache_ops;
692 struct mutex cache_rw_mutex;
696 struct snd_soc_dapm_context dapm;
697 unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
699 #ifdef CONFIG_DEBUG_FS
700 struct dentry *debugfs_codec_root;
701 struct dentry *debugfs_reg;
702 struct dentry *debugfs_dapm;
707 struct snd_soc_codec_driver {
710 int (*probe)(struct snd_soc_codec *);
711 int (*remove)(struct snd_soc_codec *);
712 int (*suspend)(struct snd_soc_codec *);
713 int (*resume)(struct snd_soc_codec *);
715 /* Default control and setup, added after probe() is run */
716 const struct snd_kcontrol_new *controls;
718 const struct snd_soc_dapm_widget *dapm_widgets;
719 int num_dapm_widgets;
720 const struct snd_soc_dapm_route *dapm_routes;
723 /* codec wide operations */
724 int (*set_sysclk)(struct snd_soc_codec *codec,
725 int clk_id, int source, unsigned int freq, int dir);
726 int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
727 unsigned int freq_in, unsigned int freq_out);
730 unsigned int (*read)(struct snd_soc_codec *, unsigned int);
731 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
732 int (*display_register)(struct snd_soc_codec *, char *,
733 size_t, unsigned int);
734 int (*volatile_register)(struct snd_soc_codec *, unsigned int);
735 int (*readable_register)(struct snd_soc_codec *, unsigned int);
736 int (*writable_register)(struct snd_soc_codec *, unsigned int);
737 unsigned int reg_cache_size;
738 short reg_cache_step;
740 const void *reg_cache_default;
741 short reg_access_size;
742 const struct snd_soc_reg_access *reg_access_default;
743 enum snd_soc_compress_type compress_type;
745 /* codec bias level */
746 int (*set_bias_level)(struct snd_soc_codec *,
747 enum snd_soc_bias_level level);
750 void (*seq_notifier)(struct snd_soc_dapm_context *,
751 enum snd_soc_dapm_type, int);
753 /* codec stream completion event */
754 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
756 bool ignore_pmdown_time; /* Doesn't benefit from pmdown delay */
758 /* probe ordering - for components with runtime dependencies */
763 /* SoC platform interface */
764 struct snd_soc_platform_driver {
766 int (*probe)(struct snd_soc_platform *);
767 int (*remove)(struct snd_soc_platform *);
768 int (*suspend)(struct snd_soc_dai *dai);
769 int (*resume)(struct snd_soc_dai *dai);
771 /* pcm creation and destruction */
772 int (*pcm_new)(struct snd_soc_pcm_runtime *);
773 void (*pcm_free)(struct snd_pcm *);
775 /* Default control and setup, added after probe() is run */
776 const struct snd_kcontrol_new *controls;
778 const struct snd_soc_dapm_widget *dapm_widgets;
779 int num_dapm_widgets;
780 const struct snd_soc_dapm_route *dapm_routes;
784 * For platform caused delay reporting.
787 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
788 struct snd_soc_dai *);
790 /* platform stream ops */
791 struct snd_pcm_ops *ops;
793 /* platform stream completion event */
794 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
796 /* probe ordering - for components with runtime dependencies */
800 /* platform IO - used for platform DAPM */
801 unsigned int (*read)(struct snd_soc_platform *, unsigned int);
802 int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
803 int (*bespoke_trigger)(struct snd_pcm_substream *, int);
806 struct snd_soc_platform {
810 struct snd_soc_platform_driver *driver;
813 unsigned int suspended:1; /* platform is suspended */
814 unsigned int probed:1;
816 struct snd_soc_card *card;
817 struct list_head list;
818 struct list_head card_list;
820 struct snd_soc_dapm_context dapm;
822 #ifdef CONFIG_DEBUG_FS
823 struct dentry *debugfs_platform_root;
824 struct dentry *debugfs_dapm;
828 struct snd_soc_dai_link {
829 /* config - must be set by machine driver */
830 const char *name; /* Codec name */
831 const char *stream_name; /* Stream name */
833 * You MAY specify the link's CPU-side device, either by device name,
834 * or by DT/OF node, but not both. If this information is omitted,
835 * the CPU-side DAI is matched using .cpu_dai_name only, which hence
836 * must be globally unique. These fields are currently typically used
837 * only for codec to codec links, or systems using device tree.
839 const char *cpu_name;
840 const struct device_node *cpu_of_node;
842 * You MAY specify the DAI name of the CPU DAI. If this information is
843 * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node
844 * only, which only works well when that device exposes a single DAI.
846 const char *cpu_dai_name;
848 * You MUST specify the link's codec, either by device name, or by
849 * DT/OF node, but not both.
851 const char *codec_name;
852 const struct device_node *codec_of_node;
853 /* You MUST specify the DAI name within the codec */
854 const char *codec_dai_name;
856 * You MAY specify the link's platform/PCM/DMA driver, either by
857 * device name, or by DT/OF node, but not both. Some forms of link
858 * do not need a platform.
860 const char *platform_name;
861 const struct device_node *platform_of_node;
862 int be_id; /* optional ID for machine driver BE identification */
864 const struct snd_soc_pcm_stream *params;
866 unsigned int dai_fmt; /* format to set on init */
868 enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */
870 /* Keep DAI active over suspend */
871 unsigned int ignore_suspend:1;
873 /* Symmetry requirements */
874 unsigned int symmetric_rates:1;
876 /* Do not create a PCM for this DAI link (Backend link) */
877 unsigned int no_pcm:1;
879 /* This DAI link can route to other DAI links at runtime (Frontend)*/
880 unsigned int dynamic:1;
882 /* pmdown_time is ignored at stop */
883 unsigned int ignore_pmdown_time:1;
885 /* codec/machine specific init - e.g. add machine controls */
886 int (*init)(struct snd_soc_pcm_runtime *rtd);
888 /* optional hw_params re-writing for BE and FE sync */
889 int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
890 struct snd_pcm_hw_params *params);
892 /* machine stream operations */
893 struct snd_soc_ops *ops;
896 struct snd_soc_codec_conf {
897 const char *dev_name;
900 * optional map of kcontrol, widget and path name prefixes that are
901 * associated per device
903 const char *name_prefix;
906 * set this to the desired compression type if you want to
907 * override the one supplied in codec->driver->compress_type
909 enum snd_soc_compress_type compress_type;
912 struct snd_soc_aux_dev {
913 const char *name; /* Codec name */
914 const char *codec_name; /* for multi-codec */
916 /* codec/machine specific init - e.g. add machine controls */
917 int (*init)(struct snd_soc_dapm_context *dapm);
921 struct snd_soc_card {
923 const char *long_name;
924 const char *driver_name;
926 struct snd_card *snd_card;
927 struct module *owner;
929 struct list_head list;
931 struct mutex dapm_mutex;
935 int (*probe)(struct snd_soc_card *card);
936 int (*late_probe)(struct snd_soc_card *card);
937 int (*remove)(struct snd_soc_card *card);
939 /* the pre and post PM functions are used to do any PM work before and
940 * after the codec and DAI's do any PM work. */
941 int (*suspend_pre)(struct snd_soc_card *card);
942 int (*suspend_post)(struct snd_soc_card *card);
943 int (*resume_pre)(struct snd_soc_card *card);
944 int (*resume_post)(struct snd_soc_card *card);
947 int (*set_bias_level)(struct snd_soc_card *,
948 struct snd_soc_dapm_context *dapm,
949 enum snd_soc_bias_level level);
950 int (*set_bias_level_post)(struct snd_soc_card *,
951 struct snd_soc_dapm_context *dapm,
952 enum snd_soc_bias_level level);
956 /* CPU <--> Codec DAI links */
957 struct snd_soc_dai_link *dai_link;
959 struct snd_soc_pcm_runtime *rtd;
962 /* optional codec specific configuration */
963 struct snd_soc_codec_conf *codec_conf;
967 * optional auxiliary devices such as amplifiers or codecs with DAI
970 struct snd_soc_aux_dev *aux_dev;
972 struct snd_soc_pcm_runtime *rtd_aux;
975 const struct snd_kcontrol_new *controls;
979 * Card-specific routes and widgets.
981 const struct snd_soc_dapm_widget *dapm_widgets;
982 int num_dapm_widgets;
983 const struct snd_soc_dapm_route *dapm_routes;
987 struct work_struct deferred_resume_work;
989 /* lists of probed devices belonging to this card */
990 struct list_head codec_dev_list;
991 struct list_head platform_dev_list;
992 struct list_head dai_dev_list;
994 struct list_head widgets;
995 struct list_head paths;
996 struct list_head dapm_list;
997 struct list_head dapm_dirty;
999 /* Generic DAPM context for the card */
1000 struct snd_soc_dapm_context dapm;
1001 struct snd_soc_dapm_stats dapm_stats;
1003 #ifdef CONFIG_DEBUG_FS
1004 struct dentry *debugfs_card_root;
1005 struct dentry *debugfs_pop_time;
1012 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
1013 struct snd_soc_pcm_runtime {
1015 struct snd_soc_card *card;
1016 struct snd_soc_dai_link *dai_link;
1017 struct mutex pcm_mutex;
1018 enum snd_soc_pcm_subclass pcm_subclass;
1019 struct snd_pcm_ops ops;
1021 unsigned int dev_registered:1;
1023 /* Dynamic PCM BE runtime data */
1024 struct snd_soc_dpcm_runtime dpcm[2];
1028 /* runtime devices */
1029 struct snd_pcm *pcm;
1030 struct snd_soc_codec *codec;
1031 struct snd_soc_platform *platform;
1032 struct snd_soc_dai *codec_dai;
1033 struct snd_soc_dai *cpu_dai;
1035 struct delayed_work delayed_work;
1036 #ifdef CONFIG_DEBUG_FS
1037 struct dentry *debugfs_dpcm_root;
1038 struct dentry *debugfs_dpcm_state;
1043 struct soc_mixer_control {
1044 int min, max, platform_max;
1045 unsigned int reg, rreg, shift, rshift, invert;
1054 /* multi register control */
1055 struct soc_mreg_control {
1057 unsigned int regbase, regcount, nbits, invert;
1060 /* enumerated kcontrol */
1063 unsigned short reg2;
1064 unsigned char shift_l;
1065 unsigned char shift_r;
1068 const char * const *texts;
1069 const unsigned int *values;
1074 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
1075 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1076 unsigned int reg, unsigned int val);
1077 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1078 unsigned int reg, const void *data, size_t len);
1080 /* device driver data */
1082 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
1085 card->drvdata = data;
1088 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card)
1090 return card->drvdata;
1093 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
1096 dev_set_drvdata(codec->dev, data);
1099 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
1101 return dev_get_drvdata(codec->dev);
1104 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
1107 dev_set_drvdata(platform->dev, data);
1110 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
1112 return dev_get_drvdata(platform->dev);
1115 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
1118 dev_set_drvdata(rtd->dev, data);
1121 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
1123 return dev_get_drvdata(rtd->dev);
1126 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
1128 INIT_LIST_HEAD(&card->dai_dev_list);
1129 INIT_LIST_HEAD(&card->codec_dev_list);
1130 INIT_LIST_HEAD(&card->platform_dev_list);
1131 INIT_LIST_HEAD(&card->widgets);
1132 INIT_LIST_HEAD(&card->paths);
1133 INIT_LIST_HEAD(&card->dapm_list);
1136 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)
1138 if (mc->reg == mc->rreg && mc->shift == mc->rshift)
1141 * mc->reg == mc->rreg && mc->shift != mc->rshift, or
1142 * mc->reg != mc->rreg means that the control is
1143 * stereo (bits in one register or in two registers)
1148 int snd_soc_util_init(void);
1149 void snd_soc_util_exit(void);
1151 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
1152 const char *propname);
1153 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
1154 const char *propname);
1156 #include <sound/soc-dai.h>
1158 #ifdef CONFIG_DEBUG_FS
1159 extern struct dentry *snd_soc_debugfs_root;
1162 extern const struct dev_pm_ops snd_soc_pm_ops;