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, .shift = xshift, .min = xmin,\
62 .max = xmax, .platform_max = xmax, .invert = xinvert} }
63 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
64 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
65 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
66 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
67 .tlv.p = (tlv_array), \
68 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
69 .put = snd_soc_put_volsw, \
70 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
71 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \
72 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
73 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
74 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
75 .tlv.p = (tlv_array),\
76 .info = snd_soc_info_volsw, \
77 .get = snd_soc_get_volsw_sx,\
78 .put = snd_soc_put_volsw_sx, \
79 .private_value = (unsigned long)&(struct soc_mixer_control) \
80 {.reg = xreg, .rreg = xreg, \
81 .shift = xshift, .rshift = xshift, \
82 .max = xmax, .min = xmin} }
83 #define SOC_SINGLE_RANGE_TLV(xname, xreg, xshift, xmin, xmax, xinvert, tlv_array) \
84 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
85 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
86 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
87 .tlv.p = (tlv_array), \
88 .info = snd_soc_info_volsw_range, \
89 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
90 .private_value = (unsigned long)&(struct soc_mixer_control) \
91 {.reg = xreg, .shift = xshift, .min = xmin,\
92 .max = xmax, .platform_max = xmax, .invert = xinvert} }
93 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
94 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
95 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
96 .put = snd_soc_put_volsw, \
97 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
99 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
100 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
101 .info = snd_soc_info_volsw, \
102 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
103 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
105 #define SOC_DOUBLE_R_RANGE(xname, reg_left, reg_right, xshift, xmin, \
107 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
108 .info = snd_soc_info_volsw_range, \
109 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
110 .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
111 xshift, xmin, xmax, xinvert) }
112 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
113 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
114 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
115 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
116 .tlv.p = (tlv_array), \
117 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
118 .put = snd_soc_put_volsw, \
119 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
121 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
122 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
123 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
124 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
125 .tlv.p = (tlv_array), \
126 .info = snd_soc_info_volsw, \
127 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
128 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
130 #define SOC_DOUBLE_R_RANGE_TLV(xname, reg_left, reg_right, xshift, xmin, \
131 xmax, xinvert, tlv_array) \
132 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
133 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
134 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
135 .tlv.p = (tlv_array), \
136 .info = snd_soc_info_volsw_range, \
137 .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
138 .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
139 xshift, xmin, xmax, xinvert) }
140 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \
141 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
142 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
143 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
144 .tlv.p = (tlv_array), \
145 .info = snd_soc_info_volsw, \
146 .get = snd_soc_get_volsw_sx, \
147 .put = snd_soc_put_volsw_sx, \
148 .private_value = (unsigned long)&(struct soc_mixer_control) \
149 {.reg = xreg, .rreg = xrreg, \
150 .shift = xshift, .rshift = xshift, \
151 .max = xmax, .min = xmin} }
152 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
153 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
154 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
155 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
156 .tlv.p = (tlv_array), \
157 .info = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
158 .put = snd_soc_put_volsw_s8, \
159 .private_value = (unsigned long)&(struct soc_mixer_control) \
160 {.reg = xreg, .min = xmin, .max = xmax, \
161 .platform_max = xmax} }
162 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
163 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
164 .max = xmax, .texts = xtexts, \
165 .mask = xmax ? roundup_pow_of_two(xmax) - 1 : 0}
166 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
167 SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
168 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
169 { .max = xmax, .texts = xtexts }
170 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
171 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
172 .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
173 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
174 SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
175 #define SOC_ENUM(xname, xenum) \
176 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
177 .info = snd_soc_info_enum_double, \
178 .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
179 .private_value = (unsigned long)&xenum }
180 #define SOC_VALUE_ENUM(xname, xenum) \
181 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
182 .info = snd_soc_info_enum_double, \
183 .get = snd_soc_get_value_enum_double, \
184 .put = snd_soc_put_value_enum_double, \
185 .private_value = (unsigned long)&xenum }
186 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
187 xhandler_get, xhandler_put) \
188 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
189 .info = snd_soc_info_volsw, \
190 .get = xhandler_get, .put = xhandler_put, \
191 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
192 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\
193 xhandler_get, xhandler_put) \
194 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
195 .info = snd_soc_info_volsw, \
196 .get = xhandler_get, .put = xhandler_put, \
198 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert) }
199 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
200 xhandler_get, xhandler_put, tlv_array) \
201 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
202 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
203 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
204 .tlv.p = (tlv_array), \
205 .info = snd_soc_info_volsw, \
206 .get = xhandler_get, .put = xhandler_put, \
207 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
208 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
209 xhandler_get, xhandler_put, tlv_array) \
210 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
211 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
212 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
213 .tlv.p = (tlv_array), \
214 .info = snd_soc_info_volsw, \
215 .get = xhandler_get, .put = xhandler_put, \
216 .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \
218 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
219 xhandler_get, xhandler_put, tlv_array) \
220 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
221 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
222 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
223 .tlv.p = (tlv_array), \
224 .info = snd_soc_info_volsw, \
225 .get = xhandler_get, .put = xhandler_put, \
226 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
228 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
229 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
230 .info = snd_soc_info_bool_ext, \
231 .get = xhandler_get, .put = xhandler_put, \
232 .private_value = xdata }
233 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
234 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
235 .info = snd_soc_info_enum_ext, \
236 .get = xhandler_get, .put = xhandler_put, \
237 .private_value = (unsigned long)&xenum }
239 #define SND_SOC_BYTES(xname, xbase, xregs) \
240 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
241 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
242 .put = snd_soc_bytes_put, .private_value = \
243 ((unsigned long)&(struct soc_bytes) \
244 {.base = xbase, .num_regs = xregs }) }
246 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask) \
247 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
248 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
249 .put = snd_soc_bytes_put, .private_value = \
250 ((unsigned long)&(struct soc_bytes) \
251 {.base = xbase, .num_regs = xregs, \
254 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \
255 xmin, xmax, xinvert) \
256 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
257 .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \
258 .put = snd_soc_put_xr_sx, \
259 .private_value = (unsigned long)&(struct soc_mreg_control) \
260 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
261 .invert = xinvert, .min = xmin, .max = xmax} }
263 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
264 SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
265 snd_soc_get_strobe, snd_soc_put_strobe)
268 * Simplified versions of above macros, declaring a struct and calculating
269 * ARRAY_SIZE internally
271 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
272 struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
273 ARRAY_SIZE(xtexts), xtexts)
274 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
275 SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
276 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
277 struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
278 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
279 struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
280 ARRAY_SIZE(xtexts), xtexts, xvalues)
281 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
282 SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
285 * Component probe and remove ordering levels for components with runtime
288 #define SND_SOC_COMP_ORDER_FIRST -2
289 #define SND_SOC_COMP_ORDER_EARLY -1
290 #define SND_SOC_COMP_ORDER_NORMAL 0
291 #define SND_SOC_COMP_ORDER_LATE 1
292 #define SND_SOC_COMP_ORDER_LAST 2
297 * @ON: Bias is fully on for audio playback and capture operations.
298 * @PREPARE: Prepare for audio operations. Called before DAPM switching for
299 * stream start and stop operations.
300 * @STANDBY: Low power standby state when no playback/capture operations are
301 * in progress. NOTE: The transition time between STANDBY and ON
302 * should be as fast as possible and no longer than 10ms.
303 * @OFF: Power Off. No restrictions on transition times.
305 enum snd_soc_bias_level {
306 SND_SOC_BIAS_OFF = 0,
307 SND_SOC_BIAS_STANDBY = 1,
308 SND_SOC_BIAS_PREPARE = 2,
315 struct snd_soc_pcm_stream;
317 struct snd_soc_pcm_runtime;
319 struct snd_soc_dai_driver;
320 struct snd_soc_platform;
321 struct snd_soc_dai_link;
322 struct snd_soc_platform_driver;
323 struct snd_soc_codec;
324 struct snd_soc_codec_driver;
327 struct snd_soc_jack_zone;
328 struct snd_soc_jack_pin;
329 struct snd_soc_cache_ops;
330 #include <sound/soc-dapm.h>
331 #include <sound/soc-dpcm.h>
333 #ifdef CONFIG_GPIOLIB
334 struct snd_soc_jack_gpio;
337 typedef int (*hw_write_t)(void *,const char* ,int);
339 extern struct snd_ac97_bus_ops soc_ac97_ops;
341 enum snd_soc_control_type {
347 enum snd_soc_compress_type {
348 SND_SOC_FLAT_COMPRESSION = 1,
351 enum snd_soc_pcm_subclass {
352 SND_SOC_PCM_CLASS_PCM = 0,
353 SND_SOC_PCM_CLASS_BE = 1,
356 enum snd_soc_card_subclass {
357 SND_SOC_CARD_CLASS_INIT = 0,
358 SND_SOC_CARD_CLASS_RUNTIME = 1,
361 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
362 int source, unsigned int freq, int dir);
363 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
364 unsigned int freq_in, unsigned int freq_out);
366 int snd_soc_register_card(struct snd_soc_card *card);
367 int snd_soc_unregister_card(struct snd_soc_card *card);
368 int snd_soc_suspend(struct device *dev);
369 int snd_soc_resume(struct device *dev);
370 int snd_soc_poweroff(struct device *dev);
371 int snd_soc_register_platform(struct device *dev,
372 struct snd_soc_platform_driver *platform_drv);
373 void snd_soc_unregister_platform(struct device *dev);
374 int snd_soc_register_codec(struct device *dev,
375 const struct snd_soc_codec_driver *codec_drv,
376 struct snd_soc_dai_driver *dai_drv, int num_dai);
377 void snd_soc_unregister_codec(struct device *dev);
378 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
380 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
382 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
384 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
385 int addr_bits, int data_bits,
386 enum snd_soc_control_type control);
387 int snd_soc_cache_sync(struct snd_soc_codec *codec);
388 int snd_soc_cache_init(struct snd_soc_codec *codec);
389 int snd_soc_cache_exit(struct snd_soc_codec *codec);
390 int snd_soc_cache_write(struct snd_soc_codec *codec,
391 unsigned int reg, unsigned int value);
392 int snd_soc_cache_read(struct snd_soc_codec *codec,
393 unsigned int reg, unsigned int *value);
394 int snd_soc_default_volatile_register(struct snd_soc_codec *codec,
396 int snd_soc_default_readable_register(struct snd_soc_codec *codec,
398 int snd_soc_default_writable_register(struct snd_soc_codec *codec,
400 int snd_soc_platform_read(struct snd_soc_platform *platform,
402 int snd_soc_platform_write(struct snd_soc_platform *platform,
403 unsigned int reg, unsigned int val);
404 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
405 int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num);
407 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
408 const char *dai_link, int stream);
409 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
410 const char *dai_link);
412 /* Utility functions to get clock rates from various things */
413 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
414 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
415 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
416 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
418 /* set runtime hw params */
419 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
420 const struct snd_pcm_hardware *hw);
422 int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
423 int cmd, struct snd_soc_platform *platform);
426 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
427 struct snd_soc_jack *jack);
428 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
429 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
430 struct snd_soc_jack_pin *pins);
431 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
432 struct notifier_block *nb);
433 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
434 struct notifier_block *nb);
435 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
436 struct snd_soc_jack_zone *zones);
437 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
438 #ifdef CONFIG_GPIOLIB
439 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
440 struct snd_soc_jack_gpio *gpios);
441 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
442 struct snd_soc_jack_gpio *gpios);
445 /* codec register bit access */
446 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
447 unsigned int mask, unsigned int value);
448 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
449 unsigned short reg, unsigned int mask,
451 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
452 unsigned int mask, unsigned int value);
454 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
455 struct snd_ac97_bus_ops *ops, int num);
456 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
461 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
462 void *data, const char *long_name,
464 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
465 const struct snd_kcontrol_new *controls, int num_controls);
466 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
467 const struct snd_kcontrol_new *controls, int num_controls);
468 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
469 const struct snd_kcontrol_new *controls, int num_controls);
470 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
471 const struct snd_kcontrol_new *controls, int num_controls);
472 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
473 struct snd_ctl_elem_info *uinfo);
474 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
475 struct snd_ctl_elem_info *uinfo);
476 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
477 struct snd_ctl_elem_value *ucontrol);
478 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
479 struct snd_ctl_elem_value *ucontrol);
480 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
481 struct snd_ctl_elem_value *ucontrol);
482 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
483 struct snd_ctl_elem_value *ucontrol);
484 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
485 struct snd_ctl_elem_info *uinfo);
486 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
487 struct snd_ctl_elem_info *uinfo);
488 #define snd_soc_info_bool_ext snd_ctl_boolean_mono_info
489 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
490 struct snd_ctl_elem_value *ucontrol);
491 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
492 struct snd_ctl_elem_value *ucontrol);
493 #define snd_soc_get_volsw_2r snd_soc_get_volsw
494 #define snd_soc_put_volsw_2r snd_soc_put_volsw
495 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
496 struct snd_ctl_elem_value *ucontrol);
497 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
498 struct snd_ctl_elem_value *ucontrol);
499 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
500 struct snd_ctl_elem_info *uinfo);
501 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
502 struct snd_ctl_elem_value *ucontrol);
503 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
504 struct snd_ctl_elem_value *ucontrol);
505 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
506 struct snd_ctl_elem_info *uinfo);
507 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
508 struct snd_ctl_elem_value *ucontrol);
509 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
510 struct snd_ctl_elem_value *ucontrol);
511 int snd_soc_limit_volume(struct snd_soc_codec *codec,
512 const char *name, int max);
513 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
514 struct snd_ctl_elem_info *uinfo);
515 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
516 struct snd_ctl_elem_value *ucontrol);
517 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
518 struct snd_ctl_elem_value *ucontrol);
519 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
520 struct snd_ctl_elem_info *uinfo);
521 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
522 struct snd_ctl_elem_value *ucontrol);
523 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
524 struct snd_ctl_elem_value *ucontrol);
525 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
526 struct snd_ctl_elem_value *ucontrol);
527 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
528 struct snd_ctl_elem_value *ucontrol);
531 * struct snd_soc_reg_access - Describes whether a given register is
532 * readable, writable or volatile.
534 * @reg: the register number
535 * @read: whether this register is readable
536 * @write: whether this register is writable
537 * @vol: whether this register is volatile
539 struct snd_soc_reg_access {
547 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
549 * @pin: name of the pin to update
550 * @mask: bits to check for in reported jack status
551 * @invert: if non-zero then pin is enabled when status is not reported
553 struct snd_soc_jack_pin {
554 struct list_head list;
561 * struct snd_soc_jack_zone - Describes voltage zones of jack detection
563 * @min_mv: start voltage in mv
564 * @max_mv: end voltage in mv
565 * @jack_type: type of jack that is expected for this voltage
566 * @debounce_time: debounce_time for jack, codec driver should wait for this
567 * duration before reading the adc for voltages
568 * @:list: list container
570 struct snd_soc_jack_zone {
573 unsigned int jack_type;
574 unsigned int debounce_time;
575 struct list_head list;
579 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
583 * @report: value to report when jack detected
584 * @invert: report presence in low state
585 * @debouce_time: debouce time in ms
586 * @wake: enable as wake source
587 * @jack_status_check: callback function which overrides the detection
588 * to provide more complex checks (eg, reading an
591 #ifdef CONFIG_GPIOLIB
592 struct snd_soc_jack_gpio {
600 struct snd_soc_jack *jack;
601 struct delayed_work work;
603 int (*jack_status_check)(void);
607 struct snd_soc_jack {
609 struct snd_jack *jack;
610 struct snd_soc_codec *codec;
611 struct list_head pins;
613 struct blocking_notifier_head notifier;
614 struct list_head jack_zones;
617 /* SoC PCM stream information */
618 struct snd_soc_pcm_stream {
619 const char *stream_name;
620 u64 formats; /* SNDRV_PCM_FMTBIT_* */
621 unsigned int rates; /* SNDRV_PCM_RATE_* */
622 unsigned int rate_min; /* min rate */
623 unsigned int rate_max; /* max rate */
624 unsigned int channels_min; /* min channels */
625 unsigned int channels_max; /* max channels */
626 unsigned int sig_bits; /* number of bits of content */
631 int (*startup)(struct snd_pcm_substream *);
632 void (*shutdown)(struct snd_pcm_substream *);
633 int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
634 int (*hw_free)(struct snd_pcm_substream *);
635 int (*prepare)(struct snd_pcm_substream *);
636 int (*trigger)(struct snd_pcm_substream *, int);
639 struct snd_soc_compr_ops {
640 int (*startup)(struct snd_compr_stream *);
641 void (*shutdown)(struct snd_compr_stream *);
642 int (*set_params)(struct snd_compr_stream *);
643 int (*trigger)(struct snd_compr_stream *);
647 struct snd_soc_cache_ops {
649 enum snd_soc_compress_type id;
650 int (*init)(struct snd_soc_codec *codec);
651 int (*exit)(struct snd_soc_codec *codec);
652 int (*read)(struct snd_soc_codec *codec, unsigned int reg,
653 unsigned int *value);
654 int (*write)(struct snd_soc_codec *codec, unsigned int reg,
656 int (*sync)(struct snd_soc_codec *codec);
659 /* SoC Audio Codec device */
660 struct snd_soc_codec {
662 const char *name_prefix;
665 const struct snd_soc_codec_driver *driver;
668 struct snd_soc_card *card;
669 struct list_head list;
670 struct list_head card_list;
672 enum snd_soc_compress_type compress_type;
673 size_t reg_size; /* reg_cache_size * reg_word_size */
674 int (*volatile_register)(struct snd_soc_codec *, unsigned int);
675 int (*readable_register)(struct snd_soc_codec *, unsigned int);
676 int (*writable_register)(struct snd_soc_codec *, unsigned int);
679 struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */
681 unsigned int cache_bypass:1; /* Suppress access to the cache */
682 unsigned int suspended:1; /* Codec is in suspend PM state */
683 unsigned int probed:1; /* Codec has been probed */
684 unsigned int ac97_registered:1; /* Codec has been AC97 registered */
685 unsigned int ac97_created:1; /* Codec has been created by SoC */
686 unsigned int sysfs_registered:1; /* codec has been sysfs registered */
687 unsigned int cache_init:1; /* codec cache has been initialized */
688 unsigned int using_regmap:1; /* using regmap access */
689 u32 cache_only; /* Suppress writes to hardware */
690 u32 cache_sync; /* Cache needs to be synced to hardware */
693 void *control_data; /* codec control (i2c/3wire) data */
694 enum snd_soc_control_type control_type;
696 unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
697 unsigned int (*read)(struct snd_soc_codec *, unsigned int);
698 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
699 int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t);
701 const void *reg_def_copy;
702 const struct snd_soc_cache_ops *cache_ops;
703 struct mutex cache_rw_mutex;
707 struct snd_soc_dapm_context dapm;
708 unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
710 #ifdef CONFIG_DEBUG_FS
711 struct dentry *debugfs_codec_root;
712 struct dentry *debugfs_reg;
713 struct dentry *debugfs_dapm;
718 struct snd_soc_codec_driver {
721 int (*probe)(struct snd_soc_codec *);
722 int (*remove)(struct snd_soc_codec *);
723 int (*suspend)(struct snd_soc_codec *);
724 int (*resume)(struct snd_soc_codec *);
726 /* Default control and setup, added after probe() is run */
727 const struct snd_kcontrol_new *controls;
729 const struct snd_soc_dapm_widget *dapm_widgets;
730 int num_dapm_widgets;
731 const struct snd_soc_dapm_route *dapm_routes;
734 /* codec wide operations */
735 int (*set_sysclk)(struct snd_soc_codec *codec,
736 int clk_id, int source, unsigned int freq, int dir);
737 int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
738 unsigned int freq_in, unsigned int freq_out);
741 unsigned int (*read)(struct snd_soc_codec *, unsigned int);
742 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
743 int (*display_register)(struct snd_soc_codec *, char *,
744 size_t, unsigned int);
745 int (*volatile_register)(struct snd_soc_codec *, unsigned int);
746 int (*readable_register)(struct snd_soc_codec *, unsigned int);
747 int (*writable_register)(struct snd_soc_codec *, unsigned int);
748 unsigned int reg_cache_size;
749 short reg_cache_step;
751 const void *reg_cache_default;
752 short reg_access_size;
753 const struct snd_soc_reg_access *reg_access_default;
754 enum snd_soc_compress_type compress_type;
756 /* codec bias level */
757 int (*set_bias_level)(struct snd_soc_codec *,
758 enum snd_soc_bias_level level);
761 void (*seq_notifier)(struct snd_soc_dapm_context *,
762 enum snd_soc_dapm_type, int);
764 /* codec stream completion event */
765 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
767 bool ignore_pmdown_time; /* Doesn't benefit from pmdown delay */
769 /* probe ordering - for components with runtime dependencies */
774 /* SoC platform interface */
775 struct snd_soc_platform_driver {
777 int (*probe)(struct snd_soc_platform *);
778 int (*remove)(struct snd_soc_platform *);
779 int (*suspend)(struct snd_soc_dai *dai);
780 int (*resume)(struct snd_soc_dai *dai);
782 /* pcm creation and destruction */
783 int (*pcm_new)(struct snd_soc_pcm_runtime *);
784 void (*pcm_free)(struct snd_pcm *);
786 /* Default control and setup, added after probe() is run */
787 const struct snd_kcontrol_new *controls;
789 const struct snd_soc_dapm_widget *dapm_widgets;
790 int num_dapm_widgets;
791 const struct snd_soc_dapm_route *dapm_routes;
795 * For platform caused delay reporting.
798 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
799 struct snd_soc_dai *);
801 /* platform stream pcm ops */
802 struct snd_pcm_ops *ops;
804 /* platform stream compress ops */
805 struct snd_compr_ops *compr_ops;
807 /* platform stream completion event */
808 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);
810 /* probe ordering - for components with runtime dependencies */
814 /* platform IO - used for platform DAPM */
815 unsigned int (*read)(struct snd_soc_platform *, unsigned int);
816 int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
817 int (*bespoke_trigger)(struct snd_pcm_substream *, int);
820 struct snd_soc_platform {
824 struct snd_soc_platform_driver *driver;
827 unsigned int suspended:1; /* platform is suspended */
828 unsigned int probed:1;
830 struct snd_soc_card *card;
831 struct list_head list;
832 struct list_head card_list;
834 struct snd_soc_dapm_context dapm;
836 #ifdef CONFIG_DEBUG_FS
837 struct dentry *debugfs_platform_root;
838 struct dentry *debugfs_dapm;
842 struct snd_soc_dai_link {
843 /* config - must be set by machine driver */
844 const char *name; /* Codec name */
845 const char *stream_name; /* Stream name */
847 * You MAY specify the link's CPU-side device, either by device name,
848 * or by DT/OF node, but not both. If this information is omitted,
849 * the CPU-side DAI is matched using .cpu_dai_name only, which hence
850 * must be globally unique. These fields are currently typically used
851 * only for codec to codec links, or systems using device tree.
853 const char *cpu_name;
854 const struct device_node *cpu_of_node;
856 * You MAY specify the DAI name of the CPU DAI. If this information is
857 * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node
858 * only, which only works well when that device exposes a single DAI.
860 const char *cpu_dai_name;
862 * You MUST specify the link's codec, either by device name, or by
863 * DT/OF node, but not both.
865 const char *codec_name;
866 const struct device_node *codec_of_node;
867 /* You MUST specify the DAI name within the codec */
868 const char *codec_dai_name;
870 * You MAY specify the link's platform/PCM/DMA driver, either by
871 * device name, or by DT/OF node, but not both. Some forms of link
872 * do not need a platform.
874 const char *platform_name;
875 const struct device_node *platform_of_node;
876 int be_id; /* optional ID for machine driver BE identification */
878 const struct snd_soc_pcm_stream *params;
880 unsigned int dai_fmt; /* format to set on init */
882 enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */
884 /* Keep DAI active over suspend */
885 unsigned int ignore_suspend:1;
887 /* Symmetry requirements */
888 unsigned int symmetric_rates:1;
890 /* Do not create a PCM for this DAI link (Backend link) */
891 unsigned int no_pcm:1;
893 /* This DAI link can route to other DAI links at runtime (Frontend)*/
894 unsigned int dynamic:1;
896 /* pmdown_time is ignored at stop */
897 unsigned int ignore_pmdown_time:1;
899 /* codec/machine specific init - e.g. add machine controls */
900 int (*init)(struct snd_soc_pcm_runtime *rtd);
902 /* optional hw_params re-writing for BE and FE sync */
903 int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
904 struct snd_pcm_hw_params *params);
906 /* machine stream operations */
907 struct snd_soc_ops *ops;
908 struct snd_soc_compr_ops *compr_ops;
911 struct snd_soc_codec_conf {
912 const char *dev_name;
915 * optional map of kcontrol, widget and path name prefixes that are
916 * associated per device
918 const char *name_prefix;
921 * set this to the desired compression type if you want to
922 * override the one supplied in codec->driver->compress_type
924 enum snd_soc_compress_type compress_type;
927 struct snd_soc_aux_dev {
928 const char *name; /* Codec name */
929 const char *codec_name; /* for multi-codec */
931 /* codec/machine specific init - e.g. add machine controls */
932 int (*init)(struct snd_soc_dapm_context *dapm);
936 struct snd_soc_card {
938 const char *long_name;
939 const char *driver_name;
941 struct snd_card *snd_card;
942 struct module *owner;
944 struct list_head list;
946 struct mutex dapm_mutex;
950 int (*probe)(struct snd_soc_card *card);
951 int (*late_probe)(struct snd_soc_card *card);
952 int (*remove)(struct snd_soc_card *card);
954 /* the pre and post PM functions are used to do any PM work before and
955 * after the codec and DAI's do any PM work. */
956 int (*suspend_pre)(struct snd_soc_card *card);
957 int (*suspend_post)(struct snd_soc_card *card);
958 int (*resume_pre)(struct snd_soc_card *card);
959 int (*resume_post)(struct snd_soc_card *card);
962 int (*set_bias_level)(struct snd_soc_card *,
963 struct snd_soc_dapm_context *dapm,
964 enum snd_soc_bias_level level);
965 int (*set_bias_level_post)(struct snd_soc_card *,
966 struct snd_soc_dapm_context *dapm,
967 enum snd_soc_bias_level level);
971 /* CPU <--> Codec DAI links */
972 struct snd_soc_dai_link *dai_link;
974 struct snd_soc_pcm_runtime *rtd;
977 /* optional codec specific configuration */
978 struct snd_soc_codec_conf *codec_conf;
982 * optional auxiliary devices such as amplifiers or codecs with DAI
985 struct snd_soc_aux_dev *aux_dev;
987 struct snd_soc_pcm_runtime *rtd_aux;
990 const struct snd_kcontrol_new *controls;
994 * Card-specific routes and widgets.
996 const struct snd_soc_dapm_widget *dapm_widgets;
997 int num_dapm_widgets;
998 const struct snd_soc_dapm_route *dapm_routes;
1002 struct work_struct deferred_resume_work;
1004 /* lists of probed devices belonging to this card */
1005 struct list_head codec_dev_list;
1006 struct list_head platform_dev_list;
1007 struct list_head dai_dev_list;
1009 struct list_head widgets;
1010 struct list_head paths;
1011 struct list_head dapm_list;
1012 struct list_head dapm_dirty;
1014 /* Generic DAPM context for the card */
1015 struct snd_soc_dapm_context dapm;
1016 struct snd_soc_dapm_stats dapm_stats;
1018 #ifdef CONFIG_DEBUG_FS
1019 struct dentry *debugfs_card_root;
1020 struct dentry *debugfs_pop_time;
1027 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
1028 struct snd_soc_pcm_runtime {
1030 struct snd_soc_card *card;
1031 struct snd_soc_dai_link *dai_link;
1032 struct mutex pcm_mutex;
1033 enum snd_soc_pcm_subclass pcm_subclass;
1034 struct snd_pcm_ops ops;
1036 unsigned int dev_registered:1;
1038 /* Dynamic PCM BE runtime data */
1039 struct snd_soc_dpcm_runtime dpcm[2];
1043 /* runtime devices */
1044 struct snd_pcm *pcm;
1045 struct snd_compr *compr;
1046 struct snd_soc_codec *codec;
1047 struct snd_soc_platform *platform;
1048 struct snd_soc_dai *codec_dai;
1049 struct snd_soc_dai *cpu_dai;
1051 struct delayed_work delayed_work;
1052 #ifdef CONFIG_DEBUG_FS
1053 struct dentry *debugfs_dpcm_root;
1054 struct dentry *debugfs_dpcm_state;
1059 struct soc_mixer_control {
1060 int min, max, platform_max;
1061 unsigned int reg, rreg, shift, rshift, invert;
1070 /* multi register control */
1071 struct soc_mreg_control {
1073 unsigned int regbase, regcount, nbits, invert;
1076 /* enumerated kcontrol */
1079 unsigned short reg2;
1080 unsigned char shift_l;
1081 unsigned char shift_r;
1084 const char * const *texts;
1085 const unsigned int *values;
1090 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
1091 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1092 unsigned int reg, unsigned int val);
1093 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1094 unsigned int reg, const void *data, size_t len);
1096 /* device driver data */
1098 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
1101 card->drvdata = data;
1104 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card)
1106 return card->drvdata;
1109 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
1112 dev_set_drvdata(codec->dev, data);
1115 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
1117 return dev_get_drvdata(codec->dev);
1120 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
1123 dev_set_drvdata(platform->dev, data);
1126 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
1128 return dev_get_drvdata(platform->dev);
1131 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
1134 dev_set_drvdata(rtd->dev, data);
1137 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
1139 return dev_get_drvdata(rtd->dev);
1142 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
1144 INIT_LIST_HEAD(&card->dai_dev_list);
1145 INIT_LIST_HEAD(&card->codec_dev_list);
1146 INIT_LIST_HEAD(&card->platform_dev_list);
1147 INIT_LIST_HEAD(&card->widgets);
1148 INIT_LIST_HEAD(&card->paths);
1149 INIT_LIST_HEAD(&card->dapm_list);
1152 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)
1154 if (mc->reg == mc->rreg && mc->shift == mc->rshift)
1157 * mc->reg == mc->rreg && mc->shift != mc->rshift, or
1158 * mc->reg != mc->rreg means that the control is
1159 * stereo (bits in one register or in two registers)
1164 int snd_soc_util_init(void);
1165 void snd_soc_util_exit(void);
1167 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
1168 const char *propname);
1169 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
1170 const char *propname);
1172 #include <sound/soc-dai.h>
1174 #ifdef CONFIG_DEBUG_FS
1175 extern struct dentry *snd_soc_debugfs_root;
1178 extern const struct dev_pm_ops snd_soc_pm_ops;