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 <linux/log2.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/compress_driver.h>
27 #include <sound/control.h>
28 #include <sound/ac97_codec.h>
31 * Convenience kcontrol builders
33 #define SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, xmax, xinvert) \
34 ((unsigned long)&(struct soc_mixer_control) \
35 {.reg = xreg, .rreg = xreg, .shift = shift_left, \
36 .rshift = shift_right, .max = xmax, .platform_max = xmax, \
38 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
39 SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert)
40 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
41 ((unsigned long)&(struct soc_mixer_control) \
42 {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
43 #define SOC_DOUBLE_R_VALUE(xlreg, xrreg, xshift, xmax, xinvert) \
44 ((unsigned long)&(struct soc_mixer_control) \
45 {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
46 .max = xmax, .platform_max = xmax, .invert = xinvert})
47 #define SOC_DOUBLE_R_RANGE_VALUE(xlreg, xrreg, xshift, xmin, xmax, xinvert) \
48 ((unsigned long)&(struct soc_mixer_control) \
49 {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
50 .min = xmin, .max = xmax, .platform_max = xmax, .invert = xinvert})
51 #define SOC_SINGLE(xname, reg, shift, max, invert) \
52 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
53 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
54 .put = snd_soc_put_volsw, \
55 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
56 #define SOC_SINGLE_RANGE(xname, xreg, xshift, xmin, xmax, xinvert) \
57 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
58 .info = snd_soc_info_volsw_range, .get = snd_soc_get_volsw_range, \
59 .put = snd_soc_put_volsw_range, \
60 .private_value = (unsigned long)&(struct soc_mixer_control) \
61 {.reg = xreg, .rreg = xreg, .shift = xshift, \
62 .rshift = xshift, .min = xmin, .max = xmax, \
63 .platform_max = xmax, .invert = xinvert} }
64 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
65 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
66 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
67 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
68 .tlv.p = (tlv_array), \
69 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
70 .put = snd_soc_put_volsw, \
71 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
72 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \
73 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
74 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
75 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
76 .tlv.p = (tlv_array),\
77 .info = snd_soc_info_volsw, \
78 .get = snd_soc_get_volsw_sx,\
79 .put = snd_soc_put_volsw_sx, \
80 .private_value = (unsigned long)&(struct soc_mixer_control) \
81 {.reg = xreg, .rreg = xreg, \
82 .shift = xshift, .rshift = xshift, \
83 .max = xmax, .min = xmin} }
84 #define SOC_SINGLE_RANGE_TLV(xname, xreg, xshift, xmin, xmax, xinvert, tlv_array) \
85 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
86 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
87 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
88 .tlv.p = (tlv_array), \
89 .info = snd_soc_info_volsw_range, \
90 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
91 .private_value = (unsigned long)&(struct soc_mixer_control) \
92 {.reg = xreg, .rreg = xreg, .shift = xshift, \
93 .rshift = xshift, .min = xmin, .max = xmax, \
94 .platform_max = xmax, .invert = xinvert} }
95 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
96 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
97 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
98 .put = snd_soc_put_volsw, \
99 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
101 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
102 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
103 .info = snd_soc_info_volsw, \
104 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
105 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
107 #define SOC_DOUBLE_R_RANGE(xname, reg_left, reg_right, xshift, xmin, \
109 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
110 .info = snd_soc_info_volsw_range, \
111 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
112 .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
113 xshift, xmin, xmax, xinvert) }
114 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
115 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
116 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
117 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
118 .tlv.p = (tlv_array), \
119 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
120 .put = snd_soc_put_volsw, \
121 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
123 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
124 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
125 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
126 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
127 .tlv.p = (tlv_array), \
128 .info = snd_soc_info_volsw, \
129 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
130 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
132 #define SOC_DOUBLE_R_RANGE_TLV(xname, reg_left, reg_right, xshift, xmin, \
133 xmax, xinvert, tlv_array) \
134 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
135 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
136 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
137 .tlv.p = (tlv_array), \
138 .info = snd_soc_info_volsw_range, \
139 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
140 .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
141 xshift, xmin, xmax, xinvert) }
142 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \
143 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
144 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
145 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
146 .tlv.p = (tlv_array), \
147 .info = snd_soc_info_volsw, \
148 .get = snd_soc_get_volsw_sx, \
149 .put = snd_soc_put_volsw_sx, \
150 .private_value = (unsigned long)&(struct soc_mixer_control) \
151 {.reg = xreg, .rreg = xrreg, \
152 .shift = xshift, .rshift = xshift, \
153 .max = xmax, .min = xmin} }
154 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
155 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
156 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
157 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
158 .tlv.p = (tlv_array), \
159 .info = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
160 .put = snd_soc_put_volsw_s8, \
161 .private_value = (unsigned long)&(struct soc_mixer_control) \
162 {.reg = xreg, .min = xmin, .max = xmax, \
163 .platform_max = xmax} }
164 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
165 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
166 .max = xmax, .texts = xtexts, \
167 .mask = xmax ? roundup_pow_of_two(xmax) - 1 : 0}
168 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
169 SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
170 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
171 { .max = xmax, .texts = xtexts }
172 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
173 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
174 .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
175 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
176 SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
177 #define SOC_ENUM(xname, xenum) \
178 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
179 .info = snd_soc_info_enum_double, \
180 .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
181 .private_value = (unsigned long)&xenum }
182 #define SOC_VALUE_ENUM(xname, xenum) \
183 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
184 .info = snd_soc_info_enum_double, \
185 .get = snd_soc_get_value_enum_double, \
186 .put = snd_soc_put_value_enum_double, \
187 .private_value = (unsigned long)&xenum }
188 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
189 xhandler_get, xhandler_put) \
190 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
191 .info = snd_soc_info_volsw, \
192 .get = xhandler_get, .put = xhandler_put, \
193 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
194 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\
195 xhandler_get, xhandler_put) \
196 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
197 .info = snd_soc_info_volsw, \
198 .get = xhandler_get, .put = xhandler_put, \
200 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert) }
201 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
202 xhandler_get, xhandler_put, tlv_array) \
203 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
204 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
205 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
206 .tlv.p = (tlv_array), \
207 .info = snd_soc_info_volsw, \
208 .get = xhandler_get, .put = xhandler_put, \
209 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
210 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
211 xhandler_get, xhandler_put, tlv_array) \
212 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
213 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
214 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
215 .tlv.p = (tlv_array), \
216 .info = snd_soc_info_volsw, \
217 .get = xhandler_get, .put = xhandler_put, \
218 .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \
220 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
221 xhandler_get, xhandler_put, tlv_array) \
222 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
223 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
224 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
225 .tlv.p = (tlv_array), \
226 .info = snd_soc_info_volsw, \
227 .get = xhandler_get, .put = xhandler_put, \
228 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
230 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
231 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
232 .info = snd_soc_info_bool_ext, \
233 .get = xhandler_get, .put = xhandler_put, \
234 .private_value = xdata }
235 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
236 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
237 .info = snd_soc_info_enum_ext, \
238 .get = xhandler_get, .put = xhandler_put, \
239 .private_value = (unsigned long)&xenum }
241 #define SND_SOC_BYTES(xname, xbase, xregs) \
242 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
243 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
244 .put = snd_soc_bytes_put, .private_value = \
245 ((unsigned long)&(struct soc_bytes) \
246 {.base = xbase, .num_regs = xregs }) }
248 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask) \
249 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
250 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
251 .put = snd_soc_bytes_put, .private_value = \
252 ((unsigned long)&(struct soc_bytes) \
253 {.base = xbase, .num_regs = xregs, \
256 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \
257 xmin, xmax, xinvert) \
258 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
259 .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \
260 .put = snd_soc_put_xr_sx, \
261 .private_value = (unsigned long)&(struct soc_mreg_control) \
262 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
263 .invert = xinvert, .min = xmin, .max = xmax} }
265 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
266 SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
267 snd_soc_get_strobe, snd_soc_put_strobe)
270 * Simplified versions of above macros, declaring a struct and calculating
271 * ARRAY_SIZE internally
273 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
274 struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
275 ARRAY_SIZE(xtexts), xtexts)
276 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
277 SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
278 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
279 struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
280 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
281 struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
282 ARRAY_SIZE(xtexts), xtexts, xvalues)
283 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
284 SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
287 * Component probe and remove ordering levels for components with runtime
290 #define SND_SOC_COMP_ORDER_FIRST -2
291 #define SND_SOC_COMP_ORDER_EARLY -1
292 #define SND_SOC_COMP_ORDER_NORMAL 0
293 #define SND_SOC_COMP_ORDER_LATE 1
294 #define SND_SOC_COMP_ORDER_LAST 2
299 * @ON: Bias is fully on for audio playback and capture operations.
300 * @PREPARE: Prepare for audio operations. Called before DAPM switching for
301 * stream start and stop operations.
302 * @STANDBY: Low power standby state when no playback/capture operations are
303 * in progress. NOTE: The transition time between STANDBY and ON
304 * should be as fast as possible and no longer than 10ms.
305 * @OFF: Power Off. No restrictions on transition times.
307 enum snd_soc_bias_level {
308 SND_SOC_BIAS_OFF = 0,
309 SND_SOC_BIAS_STANDBY = 1,
310 SND_SOC_BIAS_PREPARE = 2,
317 struct snd_soc_pcm_stream;
319 struct snd_soc_pcm_runtime;
321 struct snd_soc_dai_driver;
322 struct snd_soc_platform;
323 struct snd_soc_dai_link;
324 struct snd_soc_platform_driver;
325 struct snd_soc_codec;
326 struct snd_soc_codec_driver;
329 struct snd_soc_jack_zone;
330 struct snd_soc_jack_pin;
331 struct snd_soc_cache_ops;
332 #include <sound/soc-dapm.h>
333 #include <sound/soc-dpcm.h>
335 #ifdef CONFIG_GPIOLIB
336 struct snd_soc_jack_gpio;
339 typedef int (*hw_write_t)(void *,const char* ,int);
341 extern struct snd_ac97_bus_ops soc_ac97_ops;
343 enum snd_soc_control_type {
349 enum snd_soc_compress_type {
350 SND_SOC_FLAT_COMPRESSION = 1,
353 enum snd_soc_pcm_subclass {
354 SND_SOC_PCM_CLASS_PCM = 0,
355 SND_SOC_PCM_CLASS_BE = 1,
358 enum snd_soc_card_subclass {
359 SND_SOC_CARD_CLASS_INIT = 0,
360 SND_SOC_CARD_CLASS_RUNTIME = 1,
363 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
364 int source, unsigned int freq, int dir);
365 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
366 unsigned int freq_in, unsigned int freq_out);
368 int snd_soc_register_card(struct snd_soc_card *card);
369 int snd_soc_unregister_card(struct snd_soc_card *card);
370 int snd_soc_suspend(struct device *dev);
371 int snd_soc_resume(struct device *dev);
372 int snd_soc_poweroff(struct device *dev);
373 int snd_soc_register_platform(struct device *dev,
374 struct snd_soc_platform_driver *platform_drv);
375 void snd_soc_unregister_platform(struct device *dev);
376 int snd_soc_register_codec(struct device *dev,
377 const struct snd_soc_codec_driver *codec_drv,
378 struct snd_soc_dai_driver *dai_drv, int num_dai);
379 void snd_soc_unregister_codec(struct device *dev);
380 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
382 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
384 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
386 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
387 int addr_bits, int data_bits,
388 enum snd_soc_control_type control);
389 int snd_soc_cache_sync(struct snd_soc_codec *codec);
390 int snd_soc_cache_init(struct snd_soc_codec *codec);
391 int snd_soc_cache_exit(struct snd_soc_codec *codec);
392 int snd_soc_cache_write(struct snd_soc_codec *codec,
393 unsigned int reg, unsigned int value);
394 int snd_soc_cache_read(struct snd_soc_codec *codec,
395 unsigned int reg, unsigned int *value);
396 int snd_soc_default_volatile_register(struct snd_soc_codec *codec,
398 int snd_soc_default_readable_register(struct snd_soc_codec *codec,
400 int snd_soc_default_writable_register(struct snd_soc_codec *codec,
402 int snd_soc_platform_read(struct snd_soc_platform *platform,
404 int snd_soc_platform_write(struct snd_soc_platform *platform,
405 unsigned int reg, unsigned int val);
406 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
407 int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num);
409 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
410 const char *dai_link, int stream);
411 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
412 const char *dai_link);
414 /* Utility functions to get clock rates from various things */
415 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
416 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
417 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
418 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
420 /* set runtime hw params */
421 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
422 const struct snd_pcm_hardware *hw);
424 int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
425 int cmd, struct snd_soc_platform *platform);
428 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
429 struct snd_soc_jack *jack);
430 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
431 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
432 struct snd_soc_jack_pin *pins);
433 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
434 struct notifier_block *nb);
435 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
436 struct notifier_block *nb);
437 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
438 struct snd_soc_jack_zone *zones);
439 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
440 #ifdef CONFIG_GPIOLIB
441 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
442 struct snd_soc_jack_gpio *gpios);
443 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
444 struct snd_soc_jack_gpio *gpios);
447 /* codec register bit access */
448 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
449 unsigned int mask, unsigned int value);
450 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
451 unsigned short reg, unsigned int mask,
453 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
454 unsigned int mask, unsigned int value);
456 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
457 struct snd_ac97_bus_ops *ops, int num);
458 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
463 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
464 void *data, const char *long_name,
466 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
467 const struct snd_kcontrol_new *controls, int num_controls);
468 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
469 const struct snd_kcontrol_new *controls, int num_controls);
470 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
471 const struct snd_kcontrol_new *controls, int num_controls);
472 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
473 const struct snd_kcontrol_new *controls, int num_controls);
474 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
475 struct snd_ctl_elem_info *uinfo);
476 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
477 struct snd_ctl_elem_info *uinfo);
478 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
479 struct snd_ctl_elem_value *ucontrol);
480 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
481 struct snd_ctl_elem_value *ucontrol);
482 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
483 struct snd_ctl_elem_value *ucontrol);
484 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
485 struct snd_ctl_elem_value *ucontrol);
486 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
487 struct snd_ctl_elem_info *uinfo);
488 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
489 struct snd_ctl_elem_info *uinfo);
490 #define snd_soc_info_bool_ext snd_ctl_boolean_mono_info
491 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
492 struct snd_ctl_elem_value *ucontrol);
493 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
494 struct snd_ctl_elem_value *ucontrol);
495 #define snd_soc_get_volsw_2r snd_soc_get_volsw
496 #define snd_soc_put_volsw_2r snd_soc_put_volsw
497 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
498 struct snd_ctl_elem_value *ucontrol);
499 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
500 struct snd_ctl_elem_value *ucontrol);
501 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
502 struct snd_ctl_elem_info *uinfo);
503 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
504 struct snd_ctl_elem_value *ucontrol);
505 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
506 struct snd_ctl_elem_value *ucontrol);
507 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
508 struct snd_ctl_elem_info *uinfo);
509 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
510 struct snd_ctl_elem_value *ucontrol);
511 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
512 struct snd_ctl_elem_value *ucontrol);
513 int snd_soc_limit_volume(struct snd_soc_codec *codec,
514 const char *name, int max);
515 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
516 struct snd_ctl_elem_info *uinfo);
517 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
518 struct snd_ctl_elem_value *ucontrol);
519 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
520 struct snd_ctl_elem_value *ucontrol);
521 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
522 struct snd_ctl_elem_info *uinfo);
523 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
524 struct snd_ctl_elem_value *ucontrol);
525 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
526 struct snd_ctl_elem_value *ucontrol);
527 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
528 struct snd_ctl_elem_value *ucontrol);
529 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
530 struct snd_ctl_elem_value *ucontrol);
533 * struct snd_soc_reg_access - Describes whether a given register is
534 * readable, writable or volatile.
536 * @reg: the register number
537 * @read: whether this register is readable
538 * @write: whether this register is writable
539 * @vol: whether this register is volatile
541 struct snd_soc_reg_access {
549 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
551 * @pin: name of the pin to update
552 * @mask: bits to check for in reported jack status
553 * @invert: if non-zero then pin is enabled when status is not reported
555 struct snd_soc_jack_pin {
556 struct list_head list;
563 * struct snd_soc_jack_zone - Describes voltage zones of jack detection
565 * @min_mv: start voltage in mv
566 * @max_mv: end voltage in mv
567 * @jack_type: type of jack that is expected for this voltage
568 * @debounce_time: debounce_time for jack, codec driver should wait for this
569 * duration before reading the adc for voltages
570 * @:list: list container
572 struct snd_soc_jack_zone {
575 unsigned int jack_type;
576 unsigned int debounce_time;
577 struct list_head list;
581 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
585 * @report: value to report when jack detected
586 * @invert: report presence in low state
587 * @debouce_time: debouce time in ms
588 * @wake: enable as wake source
589 * @jack_status_check: callback function which overrides the detection
590 * to provide more complex checks (eg, reading an
593 #ifdef CONFIG_GPIOLIB
594 struct snd_soc_jack_gpio {
602 struct snd_soc_jack *jack;
603 struct delayed_work work;
605 int (*jack_status_check)(void);
609 struct snd_soc_jack {
611 struct snd_jack *jack;
612 struct snd_soc_codec *codec;
613 struct list_head pins;
615 struct blocking_notifier_head notifier;
616 struct list_head jack_zones;
619 /* SoC PCM stream information */
620 struct snd_soc_pcm_stream {
621 const char *stream_name;
622 u64 formats; /* SNDRV_PCM_FMTBIT_* */
623 unsigned int rates; /* SNDRV_PCM_RATE_* */
624 unsigned int rate_min; /* min rate */
625 unsigned int rate_max; /* max rate */
626 unsigned int channels_min; /* min channels */
627 unsigned int channels_max; /* max channels */
628 unsigned int sig_bits; /* number of bits of content */
633 int (*startup)(struct snd_pcm_substream *);
634 void (*shutdown)(struct snd_pcm_substream *);
635 int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
636 int (*hw_free)(struct snd_pcm_substream *);
637 int (*prepare)(struct snd_pcm_substream *);
638 int (*trigger)(struct snd_pcm_substream *, int);
641 struct snd_soc_compr_ops {
642 int (*startup)(struct snd_compr_stream *);
643 void (*shutdown)(struct snd_compr_stream *);
644 int (*set_params)(struct snd_compr_stream *);
645 int (*trigger)(struct snd_compr_stream *);
649 struct snd_soc_cache_ops {
651 enum snd_soc_compress_type id;
652 int (*init)(struct snd_soc_codec *codec);
653 int (*exit)(struct snd_soc_codec *codec);
654 int (*read)(struct snd_soc_codec *codec, unsigned int reg,
655 unsigned int *value);
656 int (*write)(struct snd_soc_codec *codec, unsigned int reg,
658 int (*sync)(struct snd_soc_codec *codec);
661 /* SoC Audio Codec device */
662 struct snd_soc_codec {
664 const char *name_prefix;
667 const struct snd_soc_codec_driver *driver;
670 struct snd_soc_card *card;
671 struct list_head list;
672 struct list_head card_list;
674 enum snd_soc_compress_type compress_type;
675 size_t reg_size; /* reg_cache_size * reg_word_size */
676 int (*volatile_register)(struct snd_soc_codec *, unsigned int);
677 int (*readable_register)(struct snd_soc_codec *, unsigned int);
678 int (*writable_register)(struct snd_soc_codec *, unsigned int);
681 struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */
683 unsigned int cache_bypass:1; /* Suppress access to the cache */
684 unsigned int suspended:1; /* Codec is in suspend PM state */
685 unsigned int probed:1; /* Codec has been probed */
686 unsigned int ac97_registered:1; /* Codec has been AC97 registered */
687 unsigned int ac97_created:1; /* Codec has been created by SoC */
688 unsigned int sysfs_registered:1; /* codec has been sysfs registered */
689 unsigned int cache_init:1; /* codec cache has been initialized */
690 unsigned int using_regmap:1; /* using regmap access */
691 u32 cache_only; /* Suppress writes to hardware */
692 u32 cache_sync; /* Cache needs to be synced to hardware */
695 void *control_data; /* codec control (i2c/3wire) data */
696 enum snd_soc_control_type control_type;
698 unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
699 unsigned int (*read)(struct snd_soc_codec *, unsigned int);
700 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
701 int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t);
703 const void *reg_def_copy;
704 const struct snd_soc_cache_ops *cache_ops;
705 struct mutex cache_rw_mutex;
709 struct snd_soc_dapm_context dapm;
710 unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
712 #ifdef CONFIG_DEBUG_FS
713 struct dentry *debugfs_codec_root;
714 struct dentry *debugfs_reg;
715 struct dentry *debugfs_dapm;
720 struct snd_soc_codec_driver {
723 int (*probe)(struct snd_soc_codec *);
724 int (*remove)(struct snd_soc_codec *);
725 int (*suspend)(struct snd_soc_codec *);
726 int (*resume)(struct snd_soc_codec *);
728 /* Default control and setup, added after probe() is run */
729 const struct snd_kcontrol_new *controls;
731 const struct snd_soc_dapm_widget *dapm_widgets;
732 int num_dapm_widgets;
733 const struct snd_soc_dapm_route *dapm_routes;
736 /* codec wide operations */
737 int (*set_sysclk)(struct snd_soc_codec *codec,
738 int clk_id, int source, unsigned int freq, int dir);
739 int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
740 unsigned int freq_in, unsigned int freq_out);
743 unsigned int (*read)(struct snd_soc_codec *, unsigned int);
744 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
745 int (*display_register)(struct snd_soc_codec *, char *,
746 size_t, unsigned int);
747 int (*volatile_register)(struct snd_soc_codec *, unsigned int);
748 int (*readable_register)(struct snd_soc_codec *, unsigned int);
749 int (*writable_register)(struct snd_soc_codec *, unsigned int);
750 unsigned int reg_cache_size;
751 short reg_cache_step;
753 const void *reg_cache_default;
754 short reg_access_size;
755 const struct snd_soc_reg_access *reg_access_default;
756 enum snd_soc_compress_type compress_type;
758 /* codec bias level */
759 int (*set_bias_level)(struct snd_soc_codec *,
760 enum snd_soc_bias_level level);
763 void (*seq_notifier)(struct snd_soc_dapm_context *,
764 enum snd_soc_dapm_type, int);
766 /* codec stream completion event */
767 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
769 bool ignore_pmdown_time; /* Doesn't benefit from pmdown delay */
771 /* probe ordering - for components with runtime dependencies */
776 /* SoC platform interface */
777 struct snd_soc_platform_driver {
779 int (*probe)(struct snd_soc_platform *);
780 int (*remove)(struct snd_soc_platform *);
781 int (*suspend)(struct snd_soc_dai *dai);
782 int (*resume)(struct snd_soc_dai *dai);
784 /* pcm creation and destruction */
785 int (*pcm_new)(struct snd_soc_pcm_runtime *);
786 void (*pcm_free)(struct snd_pcm *);
788 /* Default control and setup, added after probe() is run */
789 const struct snd_kcontrol_new *controls;
791 const struct snd_soc_dapm_widget *dapm_widgets;
792 int num_dapm_widgets;
793 const struct snd_soc_dapm_route *dapm_routes;
797 * For platform caused delay reporting.
800 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
801 struct snd_soc_dai *);
803 /* platform stream pcm ops */
804 struct snd_pcm_ops *ops;
806 /* platform stream compress ops */
807 struct snd_compr_ops *compr_ops;
809 /* platform stream completion event */
810 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
812 /* probe ordering - for components with runtime dependencies */
816 /* platform IO - used for platform DAPM */
817 unsigned int (*read)(struct snd_soc_platform *, unsigned int);
818 int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
819 int (*bespoke_trigger)(struct snd_pcm_substream *, int);
822 struct snd_soc_platform {
826 struct snd_soc_platform_driver *driver;
829 unsigned int suspended:1; /* platform is suspended */
830 unsigned int probed:1;
832 struct snd_soc_card *card;
833 struct list_head list;
834 struct list_head card_list;
836 struct snd_soc_dapm_context dapm;
838 #ifdef CONFIG_DEBUG_FS
839 struct dentry *debugfs_platform_root;
840 struct dentry *debugfs_dapm;
844 struct snd_soc_dai_link {
845 /* config - must be set by machine driver */
846 const char *name; /* Codec name */
847 const char *stream_name; /* Stream name */
849 * You MAY specify the link's CPU-side device, either by device name,
850 * or by DT/OF node, but not both. If this information is omitted,
851 * the CPU-side DAI is matched using .cpu_dai_name only, which hence
852 * must be globally unique. These fields are currently typically used
853 * only for codec to codec links, or systems using device tree.
855 const char *cpu_name;
856 const struct device_node *cpu_of_node;
858 * You MAY specify the DAI name of the CPU DAI. If this information is
859 * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node
860 * only, which only works well when that device exposes a single DAI.
862 const char *cpu_dai_name;
864 * You MUST specify the link's codec, either by device name, or by
865 * DT/OF node, but not both.
867 const char *codec_name;
868 const struct device_node *codec_of_node;
869 /* You MUST specify the DAI name within the codec */
870 const char *codec_dai_name;
872 * You MAY specify the link's platform/PCM/DMA driver, either by
873 * device name, or by DT/OF node, but not both. Some forms of link
874 * do not need a platform.
876 const char *platform_name;
877 const struct device_node *platform_of_node;
878 int be_id; /* optional ID for machine driver BE identification */
880 const struct snd_soc_pcm_stream *params;
882 unsigned int dai_fmt; /* format to set on init */
884 enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */
886 /* Keep DAI active over suspend */
887 unsigned int ignore_suspend:1;
889 /* Symmetry requirements */
890 unsigned int symmetric_rates:1;
892 /* Do not create a PCM for this DAI link (Backend link) */
893 unsigned int no_pcm:1;
895 /* This DAI link can route to other DAI links at runtime (Frontend)*/
896 unsigned int dynamic:1;
898 /* pmdown_time is ignored at stop */
899 unsigned int ignore_pmdown_time:1;
901 /* codec/machine specific init - e.g. add machine controls */
902 int (*init)(struct snd_soc_pcm_runtime *rtd);
904 /* optional hw_params re-writing for BE and FE sync */
905 int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
906 struct snd_pcm_hw_params *params);
908 /* machine stream operations */
909 const struct snd_soc_ops *ops;
910 const struct snd_soc_compr_ops *compr_ops;
913 struct snd_soc_codec_conf {
914 const char *dev_name;
917 * optional map of kcontrol, widget and path name prefixes that are
918 * associated per device
920 const char *name_prefix;
923 * set this to the desired compression type if you want to
924 * override the one supplied in codec->driver->compress_type
926 enum snd_soc_compress_type compress_type;
929 struct snd_soc_aux_dev {
930 const char *name; /* Codec name */
931 const char *codec_name; /* for multi-codec */
933 /* codec/machine specific init - e.g. add machine controls */
934 int (*init)(struct snd_soc_dapm_context *dapm);
938 struct snd_soc_card {
940 const char *long_name;
941 const char *driver_name;
943 struct snd_card *snd_card;
944 struct module *owner;
946 struct list_head list;
948 struct mutex dapm_mutex;
952 int (*probe)(struct snd_soc_card *card);
953 int (*late_probe)(struct snd_soc_card *card);
954 int (*remove)(struct snd_soc_card *card);
956 /* the pre and post PM functions are used to do any PM work before and
957 * after the codec and DAI's do any PM work. */
958 int (*suspend_pre)(struct snd_soc_card *card);
959 int (*suspend_post)(struct snd_soc_card *card);
960 int (*resume_pre)(struct snd_soc_card *card);
961 int (*resume_post)(struct snd_soc_card *card);
964 int (*set_bias_level)(struct snd_soc_card *,
965 struct snd_soc_dapm_context *dapm,
966 enum snd_soc_bias_level level);
967 int (*set_bias_level_post)(struct snd_soc_card *,
968 struct snd_soc_dapm_context *dapm,
969 enum snd_soc_bias_level level);
973 /* CPU <--> Codec DAI links */
974 struct snd_soc_dai_link *dai_link;
976 struct snd_soc_pcm_runtime *rtd;
979 /* optional codec specific configuration */
980 struct snd_soc_codec_conf *codec_conf;
984 * optional auxiliary devices such as amplifiers or codecs with DAI
987 struct snd_soc_aux_dev *aux_dev;
989 struct snd_soc_pcm_runtime *rtd_aux;
992 const struct snd_kcontrol_new *controls;
996 * Card-specific routes and widgets.
998 const struct snd_soc_dapm_widget *dapm_widgets;
999 int num_dapm_widgets;
1000 const struct snd_soc_dapm_route *dapm_routes;
1001 int num_dapm_routes;
1004 struct work_struct deferred_resume_work;
1006 /* lists of probed devices belonging to this card */
1007 struct list_head codec_dev_list;
1008 struct list_head platform_dev_list;
1009 struct list_head dai_dev_list;
1011 struct list_head widgets;
1012 struct list_head paths;
1013 struct list_head dapm_list;
1014 struct list_head dapm_dirty;
1016 /* Generic DAPM context for the card */
1017 struct snd_soc_dapm_context dapm;
1018 struct snd_soc_dapm_stats dapm_stats;
1020 #ifdef CONFIG_DEBUG_FS
1021 struct dentry *debugfs_card_root;
1022 struct dentry *debugfs_pop_time;
1029 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
1030 struct snd_soc_pcm_runtime {
1032 struct snd_soc_card *card;
1033 struct snd_soc_dai_link *dai_link;
1034 struct mutex pcm_mutex;
1035 enum snd_soc_pcm_subclass pcm_subclass;
1036 struct snd_pcm_ops ops;
1038 unsigned int dev_registered:1;
1040 /* Dynamic PCM BE runtime data */
1041 struct snd_soc_dpcm_runtime dpcm[2];
1044 unsigned char pop_wait:1;
1046 /* runtime devices */
1047 struct snd_pcm *pcm;
1048 struct snd_compr *compr;
1049 struct snd_soc_codec *codec;
1050 struct snd_soc_platform *platform;
1051 struct snd_soc_dai *codec_dai;
1052 struct snd_soc_dai *cpu_dai;
1054 struct delayed_work delayed_work;
1055 #ifdef CONFIG_DEBUG_FS
1056 struct dentry *debugfs_dpcm_root;
1057 struct dentry *debugfs_dpcm_state;
1062 struct soc_mixer_control {
1063 int min, max, platform_max;
1064 unsigned int reg, rreg, shift, rshift, invert;
1073 /* multi register control */
1074 struct soc_mreg_control {
1076 unsigned int regbase, regcount, nbits, invert;
1079 /* enumerated kcontrol */
1082 unsigned short reg2;
1083 unsigned char shift_l;
1084 unsigned char shift_r;
1087 const char * const *texts;
1088 const unsigned int *values;
1093 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
1094 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1095 unsigned int reg, unsigned int val);
1096 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1097 unsigned int reg, const void *data, size_t len);
1099 /* device driver data */
1101 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
1104 card->drvdata = data;
1107 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card)
1109 return card->drvdata;
1112 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
1115 dev_set_drvdata(codec->dev, data);
1118 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
1120 return dev_get_drvdata(codec->dev);
1123 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
1126 dev_set_drvdata(platform->dev, data);
1129 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
1131 return dev_get_drvdata(platform->dev);
1134 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
1137 dev_set_drvdata(rtd->dev, data);
1140 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
1142 return dev_get_drvdata(rtd->dev);
1145 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
1147 INIT_LIST_HEAD(&card->dai_dev_list);
1148 INIT_LIST_HEAD(&card->codec_dev_list);
1149 INIT_LIST_HEAD(&card->platform_dev_list);
1150 INIT_LIST_HEAD(&card->widgets);
1151 INIT_LIST_HEAD(&card->paths);
1152 INIT_LIST_HEAD(&card->dapm_list);
1155 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)
1157 if (mc->reg == mc->rreg && mc->shift == mc->rshift)
1160 * mc->reg == mc->rreg && mc->shift != mc->rshift, or
1161 * mc->reg != mc->rreg means that the control is
1162 * stereo (bits in one register or in two registers)
1167 int snd_soc_util_init(void);
1168 void snd_soc_util_exit(void);
1170 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
1171 const char *propname);
1172 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
1173 const char *propname);
1174 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
1175 const char *prefix);
1177 #include <sound/soc-dai.h>
1179 #ifdef CONFIG_DEBUG_FS
1180 extern struct dentry *snd_soc_debugfs_root;
1183 extern const struct dev_pm_ops snd_soc_pm_ops;