1 /* 2 * linux/sound/soc.h -- ALSA SoC Layer 3 * 4 * Author: Liam Girdwood 5 * Created: Aug 11th 2005 6 * Copyright: Wolfson Microelectronics. PLC. 7 * 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. 11 */ 12 13 #ifndef __LINUX_SND_SOC_H 14 #define __LINUX_SND_SOC_H 15 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> 27 28 /* 29 * Convenience kcontrol builders 30 */ 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, \ 35 .invert = xinvert}) 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_SINGLE(xname, reg, shift, max, invert) \ 46 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 47 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\ 48 .put = snd_soc_put_volsw, \ 49 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 50 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ 51 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 52 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 53 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 54 .tlv.p = (tlv_array), \ 55 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\ 56 .put = snd_soc_put_volsw, \ 57 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 58 #define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \ 59 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 60 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 61 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 62 .tlv.p = (tlv_array),\ 63 .info = snd_soc_info_volsw, \ 64 .get = snd_soc_get_volsw_sx,\ 65 .put = snd_soc_put_volsw_sx, \ 66 .private_value = (unsigned long)&(struct soc_mixer_control) \ 67 {.reg = xreg, .rreg = xreg, \ 68 .shift = xshift, .rshift = xshift, \ 69 .max = xmax, .min = xmin} } 70 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \ 71 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 72 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \ 73 .put = snd_soc_put_volsw, \ 74 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \ 75 max, invert) } 76 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \ 77 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 78 .info = snd_soc_info_volsw, \ 79 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \ 80 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \ 81 xmax, xinvert) } 82 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \ 83 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 84 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 85 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 86 .tlv.p = (tlv_array), \ 87 .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \ 88 .put = snd_soc_put_volsw, \ 89 .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \ 90 max, invert) } 91 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \ 92 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 93 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 94 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 95 .tlv.p = (tlv_array), \ 96 .info = snd_soc_info_volsw, \ 97 .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \ 98 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \ 99 xmax, xinvert) } 100 #define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \ 101 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 102 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 103 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 104 .tlv.p = (tlv_array), \ 105 .info = snd_soc_info_volsw, \ 106 .get = snd_soc_get_volsw_sx, \ 107 .put = snd_soc_put_volsw_sx, \ 108 .private_value = (unsigned long)&(struct soc_mixer_control) \ 109 {.reg = xreg, .rreg = xrreg, \ 110 .shift = xshift, .rshift = xshift, \ 111 .max = xmax, .min = xmin} } 112 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, 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_s8, .get = snd_soc_get_volsw_s8, \ 118 .put = snd_soc_put_volsw_s8, \ 119 .private_value = (unsigned long)&(struct soc_mixer_control) \ 120 {.reg = xreg, .min = xmin, .max = xmax, \ 121 .platform_max = xmax} } 122 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \ 123 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ 124 .max = xmax, .texts = xtexts } 125 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \ 126 SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts) 127 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \ 128 { .max = xmax, .texts = xtexts } 129 #define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \ 130 { .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \ 131 .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues} 132 #define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \ 133 SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues) 134 #define SOC_ENUM(xname, xenum) \ 135 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\ 136 .info = snd_soc_info_enum_double, \ 137 .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \ 138 .private_value = (unsigned long)&xenum } 139 #define SOC_VALUE_ENUM(xname, xenum) \ 140 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\ 141 .info = snd_soc_info_enum_double, \ 142 .get = snd_soc_get_value_enum_double, \ 143 .put = snd_soc_put_value_enum_double, \ 144 .private_value = (unsigned long)&xenum } 145 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\ 146 xhandler_get, xhandler_put) \ 147 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 148 .info = snd_soc_info_volsw, \ 149 .get = xhandler_get, .put = xhandler_put, \ 150 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) } 151 #define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\ 152 xhandler_get, xhandler_put) \ 153 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\ 154 .info = snd_soc_info_volsw, \ 155 .get = xhandler_get, .put = xhandler_put, \ 156 .private_value = \ 157 SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert) } 158 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\ 159 xhandler_get, xhandler_put, tlv_array) \ 160 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 161 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ 162 SNDRV_CTL_ELEM_ACCESS_READWRITE,\ 163 .tlv.p = (tlv_array), \ 164 .info = snd_soc_info_volsw, \ 165 .get = xhandler_get, .put = xhandler_put, \ 166 .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) } 167 #define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\ 168 xhandler_get, xhandler_put, tlv_array) \ 169 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 170 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 171 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 172 .tlv.p = (tlv_array), \ 173 .info = snd_soc_info_volsw, \ 174 .get = xhandler_get, .put = xhandler_put, \ 175 .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \ 176 xmax, xinvert) } 177 #define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\ 178 xhandler_get, xhandler_put, tlv_array) \ 179 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 180 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ 181 SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 182 .tlv.p = (tlv_array), \ 183 .info = snd_soc_info_volsw, \ 184 .get = xhandler_get, .put = xhandler_put, \ 185 .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \ 186 xmax, xinvert) } 187 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \ 188 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 189 .info = snd_soc_info_bool_ext, \ 190 .get = xhandler_get, .put = xhandler_put, \ 191 .private_value = xdata } 192 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \ 193 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 194 .info = snd_soc_info_enum_ext, \ 195 .get = xhandler_get, .put = xhandler_put, \ 196 .private_value = (unsigned long)&xenum } 197 198 #define SND_SOC_BYTES(xname, xbase, xregs) \ 199 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 200 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \ 201 .put = snd_soc_bytes_put, .private_value = \ 202 ((unsigned long)&(struct soc_bytes) \ 203 {.base = xbase, .num_regs = xregs }) } 204 205 #define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask) \ 206 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ 207 .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \ 208 .put = snd_soc_bytes_put, .private_value = \ 209 ((unsigned long)&(struct soc_bytes) \ 210 {.base = xbase, .num_regs = xregs, \ 211 .mask = xmask }) } 212 213 #define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \ 214 xmin, xmax, xinvert) \ 215 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \ 216 .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \ 217 .put = snd_soc_put_xr_sx, \ 218 .private_value = (unsigned long)&(struct soc_mreg_control) \ 219 {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \ 220 .invert = xinvert, .min = xmin, .max = xmax} } 221 222 #define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \ 223 SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \ 224 snd_soc_get_strobe, snd_soc_put_strobe) 225 226 /* 227 * Simplified versions of above macros, declaring a struct and calculating 228 * ARRAY_SIZE internally 229 */ 230 #define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \ 231 struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \ 232 ARRAY_SIZE(xtexts), xtexts) 233 #define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \ 234 SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts) 235 #define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \ 236 struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts) 237 #define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \ 238 struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \ 239 ARRAY_SIZE(xtexts), xtexts, xvalues) 240 #define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \ 241 SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues) 242 243 /* 244 * Component probe and remove ordering levels for components with runtime 245 * dependencies. 246 */ 247 #define SND_SOC_COMP_ORDER_FIRST -2 248 #define SND_SOC_COMP_ORDER_EARLY -1 249 #define SND_SOC_COMP_ORDER_NORMAL 0 250 #define SND_SOC_COMP_ORDER_LATE 1 251 #define SND_SOC_COMP_ORDER_LAST 2 252 253 /* 254 * Bias levels 255 * 256 * @ON: Bias is fully on for audio playback and capture operations. 257 * @PREPARE: Prepare for audio operations. Called before DAPM switching for 258 * stream start and stop operations. 259 * @STANDBY: Low power standby state when no playback/capture operations are 260 * in progress. NOTE: The transition time between STANDBY and ON 261 * should be as fast as possible and no longer than 10ms. 262 * @OFF: Power Off. No restrictions on transition times. 263 */ 264 enum snd_soc_bias_level { 265 SND_SOC_BIAS_OFF = 0, 266 SND_SOC_BIAS_STANDBY = 1, 267 SND_SOC_BIAS_PREPARE = 2, 268 SND_SOC_BIAS_ON = 3, 269 }; 270 271 struct device_node; 272 struct snd_jack; 273 struct snd_soc_card; 274 struct snd_soc_pcm_stream; 275 struct snd_soc_ops; 276 struct snd_soc_pcm_runtime; 277 struct snd_soc_dai; 278 struct snd_soc_dai_driver; 279 struct snd_soc_platform; 280 struct snd_soc_dai_link; 281 struct snd_soc_platform_driver; 282 struct snd_soc_codec; 283 struct snd_soc_codec_driver; 284 struct soc_enum; 285 struct snd_soc_jack; 286 struct snd_soc_jack_zone; 287 struct snd_soc_jack_pin; 288 struct snd_soc_cache_ops; 289 #include <sound/soc-dapm.h> 290 #include <sound/soc-dpcm.h> 291 292 #ifdef CONFIG_GPIOLIB 293 struct snd_soc_jack_gpio; 294 #endif 295 296 typedef int (*hw_write_t)(void *,const char* ,int); 297 298 extern struct snd_ac97_bus_ops soc_ac97_ops; 299 300 enum snd_soc_control_type { 301 SND_SOC_I2C = 1, 302 SND_SOC_SPI, 303 SND_SOC_REGMAP, 304 }; 305 306 enum snd_soc_compress_type { 307 SND_SOC_FLAT_COMPRESSION = 1, 308 }; 309 310 enum snd_soc_pcm_subclass { 311 SND_SOC_PCM_CLASS_PCM = 0, 312 SND_SOC_PCM_CLASS_BE = 1, 313 }; 314 315 enum snd_soc_card_subclass { 316 SND_SOC_CARD_CLASS_INIT = 0, 317 SND_SOC_CARD_CLASS_RUNTIME = 1, 318 }; 319 320 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id, 321 int source, unsigned int freq, int dir); 322 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source, 323 unsigned int freq_in, unsigned int freq_out); 324 325 int snd_soc_register_card(struct snd_soc_card *card); 326 int snd_soc_unregister_card(struct snd_soc_card *card); 327 int snd_soc_suspend(struct device *dev); 328 int snd_soc_resume(struct device *dev); 329 int snd_soc_poweroff(struct device *dev); 330 int snd_soc_register_platform(struct device *dev, 331 struct snd_soc_platform_driver *platform_drv); 332 void snd_soc_unregister_platform(struct device *dev); 333 int snd_soc_register_codec(struct device *dev, 334 const struct snd_soc_codec_driver *codec_drv, 335 struct snd_soc_dai_driver *dai_drv, int num_dai); 336 void snd_soc_unregister_codec(struct device *dev); 337 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, 338 unsigned int reg); 339 int snd_soc_codec_readable_register(struct snd_soc_codec *codec, 340 unsigned int reg); 341 int snd_soc_codec_writable_register(struct snd_soc_codec *codec, 342 unsigned int reg); 343 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec, 344 int addr_bits, int data_bits, 345 enum snd_soc_control_type control); 346 int snd_soc_cache_sync(struct snd_soc_codec *codec); 347 int snd_soc_cache_init(struct snd_soc_codec *codec); 348 int snd_soc_cache_exit(struct snd_soc_codec *codec); 349 int snd_soc_cache_write(struct snd_soc_codec *codec, 350 unsigned int reg, unsigned int value); 351 int snd_soc_cache_read(struct snd_soc_codec *codec, 352 unsigned int reg, unsigned int *value); 353 int snd_soc_default_volatile_register(struct snd_soc_codec *codec, 354 unsigned int reg); 355 int snd_soc_default_readable_register(struct snd_soc_codec *codec, 356 unsigned int reg); 357 int snd_soc_default_writable_register(struct snd_soc_codec *codec, 358 unsigned int reg); 359 int snd_soc_platform_read(struct snd_soc_platform *platform, 360 unsigned int reg); 361 int snd_soc_platform_write(struct snd_soc_platform *platform, 362 unsigned int reg, unsigned int val); 363 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num); 364 365 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, 366 const char *dai_link, int stream); 367 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, 368 const char *dai_link); 369 370 /* Utility functions to get clock rates from various things */ 371 int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots); 372 int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params); 373 int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots); 374 int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms); 375 376 /* set runtime hw params */ 377 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, 378 const struct snd_pcm_hardware *hw); 379 380 int snd_soc_platform_trigger(struct snd_pcm_substream *substream, 381 int cmd, struct snd_soc_platform *platform); 382 383 /* Jack reporting */ 384 int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type, 385 struct snd_soc_jack *jack); 386 void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask); 387 int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, 388 struct snd_soc_jack_pin *pins); 389 void snd_soc_jack_notifier_register(struct snd_soc_jack *jack, 390 struct notifier_block *nb); 391 void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack, 392 struct notifier_block *nb); 393 int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count, 394 struct snd_soc_jack_zone *zones); 395 int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage); 396 #ifdef CONFIG_GPIOLIB 397 int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count, 398 struct snd_soc_jack_gpio *gpios); 399 void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, 400 struct snd_soc_jack_gpio *gpios); 401 #endif 402 403 /* codec register bit access */ 404 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, 405 unsigned int mask, unsigned int value); 406 int snd_soc_update_bits_locked(struct snd_soc_codec *codec, 407 unsigned short reg, unsigned int mask, 408 unsigned int value); 409 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, 410 unsigned int mask, unsigned int value); 411 412 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, 413 struct snd_ac97_bus_ops *ops, int num); 414 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec); 415 416 /* 417 *Controls 418 */ 419 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, 420 void *data, const char *long_name, 421 const char *prefix); 422 int snd_soc_add_codec_controls(struct snd_soc_codec *codec, 423 const struct snd_kcontrol_new *controls, int num_controls); 424 int snd_soc_add_platform_controls(struct snd_soc_platform *platform, 425 const struct snd_kcontrol_new *controls, int num_controls); 426 int snd_soc_add_card_controls(struct snd_soc_card *soc_card, 427 const struct snd_kcontrol_new *controls, int num_controls); 428 int snd_soc_add_dai_controls(struct snd_soc_dai *dai, 429 const struct snd_kcontrol_new *controls, int num_controls); 430 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, 431 struct snd_ctl_elem_info *uinfo); 432 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, 433 struct snd_ctl_elem_info *uinfo); 434 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, 435 struct snd_ctl_elem_value *ucontrol); 436 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, 437 struct snd_ctl_elem_value *ucontrol); 438 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, 439 struct snd_ctl_elem_value *ucontrol); 440 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, 441 struct snd_ctl_elem_value *ucontrol); 442 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, 443 struct snd_ctl_elem_info *uinfo); 444 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, 445 struct snd_ctl_elem_info *uinfo); 446 #define snd_soc_info_bool_ext snd_ctl_boolean_mono_info 447 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, 448 struct snd_ctl_elem_value *ucontrol); 449 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, 450 struct snd_ctl_elem_value *ucontrol); 451 #define snd_soc_get_volsw_2r snd_soc_get_volsw 452 #define snd_soc_put_volsw_2r snd_soc_put_volsw 453 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, 454 struct snd_ctl_elem_value *ucontrol); 455 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, 456 struct snd_ctl_elem_value *ucontrol); 457 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, 458 struct snd_ctl_elem_info *uinfo); 459 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, 460 struct snd_ctl_elem_value *ucontrol); 461 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, 462 struct snd_ctl_elem_value *ucontrol); 463 int snd_soc_limit_volume(struct snd_soc_codec *codec, 464 const char *name, int max); 465 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, 466 struct snd_ctl_elem_info *uinfo); 467 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, 468 struct snd_ctl_elem_value *ucontrol); 469 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, 470 struct snd_ctl_elem_value *ucontrol); 471 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, 472 struct snd_ctl_elem_info *uinfo); 473 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, 474 struct snd_ctl_elem_value *ucontrol); 475 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, 476 struct snd_ctl_elem_value *ucontrol); 477 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, 478 struct snd_ctl_elem_value *ucontrol); 479 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, 480 struct snd_ctl_elem_value *ucontrol); 481 482 /** 483 * struct snd_soc_reg_access - Describes whether a given register is 484 * readable, writable or volatile. 485 * 486 * @reg: the register number 487 * @read: whether this register is readable 488 * @write: whether this register is writable 489 * @vol: whether this register is volatile 490 */ 491 struct snd_soc_reg_access { 492 u16 reg; 493 u16 read; 494 u16 write; 495 u16 vol; 496 }; 497 498 /** 499 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection 500 * 501 * @pin: name of the pin to update 502 * @mask: bits to check for in reported jack status 503 * @invert: if non-zero then pin is enabled when status is not reported 504 */ 505 struct snd_soc_jack_pin { 506 struct list_head list; 507 const char *pin; 508 int mask; 509 bool invert; 510 }; 511 512 /** 513 * struct snd_soc_jack_zone - Describes voltage zones of jack detection 514 * 515 * @min_mv: start voltage in mv 516 * @max_mv: end voltage in mv 517 * @jack_type: type of jack that is expected for this voltage 518 * @debounce_time: debounce_time for jack, codec driver should wait for this 519 * duration before reading the adc for voltages 520 * @:list: list container 521 */ 522 struct snd_soc_jack_zone { 523 unsigned int min_mv; 524 unsigned int max_mv; 525 unsigned int jack_type; 526 unsigned int debounce_time; 527 struct list_head list; 528 }; 529 530 /** 531 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection 532 * 533 * @gpio: gpio number 534 * @name: gpio name 535 * @report: value to report when jack detected 536 * @invert: report presence in low state 537 * @debouce_time: debouce time in ms 538 * @wake: enable as wake source 539 * @jack_status_check: callback function which overrides the detection 540 * to provide more complex checks (eg, reading an 541 * ADC). 542 */ 543 #ifdef CONFIG_GPIOLIB 544 struct snd_soc_jack_gpio { 545 unsigned int gpio; 546 const char *name; 547 int report; 548 int invert; 549 int debounce_time; 550 bool wake; 551 552 struct snd_soc_jack *jack; 553 struct delayed_work work; 554 555 int (*jack_status_check)(void); 556 }; 557 #endif 558 559 struct snd_soc_jack { 560 struct mutex mutex; 561 struct snd_jack *jack; 562 struct snd_soc_codec *codec; 563 struct list_head pins; 564 int status; 565 struct blocking_notifier_head notifier; 566 struct list_head jack_zones; 567 }; 568 569 /* SoC PCM stream information */ 570 struct snd_soc_pcm_stream { 571 const char *stream_name; 572 u64 formats; /* SNDRV_PCM_FMTBIT_* */ 573 unsigned int rates; /* SNDRV_PCM_RATE_* */ 574 unsigned int rate_min; /* min rate */ 575 unsigned int rate_max; /* max rate */ 576 unsigned int channels_min; /* min channels */ 577 unsigned int channels_max; /* max channels */ 578 unsigned int sig_bits; /* number of bits of content */ 579 }; 580 581 /* SoC audio ops */ 582 struct snd_soc_ops { 583 int (*startup)(struct snd_pcm_substream *); 584 void (*shutdown)(struct snd_pcm_substream *); 585 int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *); 586 int (*hw_free)(struct snd_pcm_substream *); 587 int (*prepare)(struct snd_pcm_substream *); 588 int (*trigger)(struct snd_pcm_substream *, int); 589 }; 590 591 /* SoC cache ops */ 592 struct snd_soc_cache_ops { 593 const char *name; 594 enum snd_soc_compress_type id; 595 int (*init)(struct snd_soc_codec *codec); 596 int (*exit)(struct snd_soc_codec *codec); 597 int (*read)(struct snd_soc_codec *codec, unsigned int reg, 598 unsigned int *value); 599 int (*write)(struct snd_soc_codec *codec, unsigned int reg, 600 unsigned int value); 601 int (*sync)(struct snd_soc_codec *codec); 602 }; 603 604 /* SoC Audio Codec device */ 605 struct snd_soc_codec { 606 const char *name; 607 const char *name_prefix; 608 int id; 609 struct device *dev; 610 const struct snd_soc_codec_driver *driver; 611 612 struct mutex mutex; 613 struct snd_soc_card *card; 614 struct list_head list; 615 struct list_head card_list; 616 int num_dai; 617 enum snd_soc_compress_type compress_type; 618 size_t reg_size; /* reg_cache_size * reg_word_size */ 619 int (*volatile_register)(struct snd_soc_codec *, unsigned int); 620 int (*readable_register)(struct snd_soc_codec *, unsigned int); 621 int (*writable_register)(struct snd_soc_codec *, unsigned int); 622 623 /* runtime */ 624 struct snd_ac97 *ac97; /* for ad-hoc ac97 devices */ 625 unsigned int active; 626 unsigned int cache_bypass:1; /* Suppress access to the cache */ 627 unsigned int suspended:1; /* Codec is in suspend PM state */ 628 unsigned int probed:1; /* Codec has been probed */ 629 unsigned int ac97_registered:1; /* Codec has been AC97 registered */ 630 unsigned int ac97_created:1; /* Codec has been created by SoC */ 631 unsigned int sysfs_registered:1; /* codec has been sysfs registered */ 632 unsigned int cache_init:1; /* codec cache has been initialized */ 633 unsigned int using_regmap:1; /* using regmap access */ 634 u32 cache_only; /* Suppress writes to hardware */ 635 u32 cache_sync; /* Cache needs to be synced to hardware */ 636 637 /* codec IO */ 638 void *control_data; /* codec control (i2c/3wire) data */ 639 enum snd_soc_control_type control_type; 640 hw_write_t hw_write; 641 unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int); 642 unsigned int (*read)(struct snd_soc_codec *, unsigned int); 643 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int); 644 int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t); 645 void *reg_cache; 646 const void *reg_def_copy; 647 const struct snd_soc_cache_ops *cache_ops; 648 struct mutex cache_rw_mutex; 649 int val_bytes; 650 651 /* dapm */ 652 struct snd_soc_dapm_context dapm; 653 unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */ 654 655 #ifdef CONFIG_DEBUG_FS 656 struct dentry *debugfs_codec_root; 657 struct dentry *debugfs_reg; 658 struct dentry *debugfs_dapm; 659 #endif 660 }; 661 662 /* codec driver */ 663 struct snd_soc_codec_driver { 664 665 /* driver ops */ 666 int (*probe)(struct snd_soc_codec *); 667 int (*remove)(struct snd_soc_codec *); 668 int (*suspend)(struct snd_soc_codec *); 669 int (*resume)(struct snd_soc_codec *); 670 671 /* Default control and setup, added after probe() is run */ 672 const struct snd_kcontrol_new *controls; 673 int num_controls; 674 const struct snd_soc_dapm_widget *dapm_widgets; 675 int num_dapm_widgets; 676 const struct snd_soc_dapm_route *dapm_routes; 677 int num_dapm_routes; 678 679 /* codec wide operations */ 680 int (*set_sysclk)(struct snd_soc_codec *codec, 681 int clk_id, int source, unsigned int freq, int dir); 682 int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source, 683 unsigned int freq_in, unsigned int freq_out); 684 685 /* codec IO */ 686 unsigned int (*read)(struct snd_soc_codec *, unsigned int); 687 int (*write)(struct snd_soc_codec *, unsigned int, unsigned int); 688 int (*display_register)(struct snd_soc_codec *, char *, 689 size_t, unsigned int); 690 int (*volatile_register)(struct snd_soc_codec *, unsigned int); 691 int (*readable_register)(struct snd_soc_codec *, unsigned int); 692 int (*writable_register)(struct snd_soc_codec *, unsigned int); 693 unsigned int reg_cache_size; 694 short reg_cache_step; 695 short reg_word_size; 696 const void *reg_cache_default; 697 short reg_access_size; 698 const struct snd_soc_reg_access *reg_access_default; 699 enum snd_soc_compress_type compress_type; 700 701 /* codec bias level */ 702 int (*set_bias_level)(struct snd_soc_codec *, 703 enum snd_soc_bias_level level); 704 bool idle_bias_off; 705 706 void (*seq_notifier)(struct snd_soc_dapm_context *, 707 enum snd_soc_dapm_type, int); 708 709 /* codec stream completion event */ 710 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event); 711 712 bool ignore_pmdown_time; /* Doesn't benefit from pmdown delay */ 713 714 /* probe ordering - for components with runtime dependencies */ 715 int probe_order; 716 int remove_order; 717 }; 718 719 /* SoC platform interface */ 720 struct snd_soc_platform_driver { 721 722 int (*probe)(struct snd_soc_platform *); 723 int (*remove)(struct snd_soc_platform *); 724 int (*suspend)(struct snd_soc_dai *dai); 725 int (*resume)(struct snd_soc_dai *dai); 726 727 /* pcm creation and destruction */ 728 int (*pcm_new)(struct snd_soc_pcm_runtime *); 729 void (*pcm_free)(struct snd_pcm *); 730 731 /* Default control and setup, added after probe() is run */ 732 const struct snd_kcontrol_new *controls; 733 int num_controls; 734 const struct snd_soc_dapm_widget *dapm_widgets; 735 int num_dapm_widgets; 736 const struct snd_soc_dapm_route *dapm_routes; 737 int num_dapm_routes; 738 739 /* 740 * For platform caused delay reporting. 741 * Optional. 742 */ 743 snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *, 744 struct snd_soc_dai *); 745 746 /* platform stream ops */ 747 struct snd_pcm_ops *ops; 748 749 /* platform stream completion event */ 750 int (*stream_event)(struct snd_soc_dapm_context *dapm, int event); 751 752 /* probe ordering - for components with runtime dependencies */ 753 int probe_order; 754 int remove_order; 755 756 /* platform IO - used for platform DAPM */ 757 unsigned int (*read)(struct snd_soc_platform *, unsigned int); 758 int (*write)(struct snd_soc_platform *, unsigned int, unsigned int); 759 int (*bespoke_trigger)(struct snd_pcm_substream *, int); 760 }; 761 762 struct snd_soc_platform { 763 const char *name; 764 int id; 765 struct device *dev; 766 struct snd_soc_platform_driver *driver; 767 struct mutex mutex; 768 769 unsigned int suspended:1; /* platform is suspended */ 770 unsigned int probed:1; 771 772 struct snd_soc_card *card; 773 struct list_head list; 774 struct list_head card_list; 775 776 struct snd_soc_dapm_context dapm; 777 778 #ifdef CONFIG_DEBUG_FS 779 struct dentry *debugfs_platform_root; 780 struct dentry *debugfs_dapm; 781 #endif 782 }; 783 784 struct snd_soc_dai_link { 785 /* config - must be set by machine driver */ 786 const char *name; /* Codec name */ 787 const char *stream_name; /* Stream name */ 788 const char *codec_name; /* for multi-codec */ 789 const struct device_node *codec_of_node; 790 const char *platform_name; /* for multi-platform */ 791 const struct device_node *platform_of_node; 792 const char *cpu_dai_name; 793 const struct device_node *cpu_dai_of_node; 794 const char *codec_dai_name; 795 int be_id; /* optional ID for machine driver BE identification */ 796 797 const struct snd_soc_pcm_stream *params; 798 799 unsigned int dai_fmt; /* format to set on init */ 800 801 enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */ 802 803 /* Keep DAI active over suspend */ 804 unsigned int ignore_suspend:1; 805 806 /* Symmetry requirements */ 807 unsigned int symmetric_rates:1; 808 809 /* Do not create a PCM for this DAI link (Backend link) */ 810 unsigned int no_pcm:1; 811 812 /* This DAI link can route to other DAI links at runtime (Frontend)*/ 813 unsigned int dynamic:1; 814 815 /* pmdown_time is ignored at stop */ 816 unsigned int ignore_pmdown_time:1; 817 818 /* codec/machine specific init - e.g. add machine controls */ 819 int (*init)(struct snd_soc_pcm_runtime *rtd); 820 821 /* optional hw_params re-writing for BE and FE sync */ 822 int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd, 823 struct snd_pcm_hw_params *params); 824 825 /* machine stream operations */ 826 struct snd_soc_ops *ops; 827 }; 828 829 struct snd_soc_codec_conf { 830 const char *dev_name; 831 832 /* 833 * optional map of kcontrol, widget and path name prefixes that are 834 * associated per device 835 */ 836 const char *name_prefix; 837 838 /* 839 * set this to the desired compression type if you want to 840 * override the one supplied in codec->driver->compress_type 841 */ 842 enum snd_soc_compress_type compress_type; 843 }; 844 845 struct snd_soc_aux_dev { 846 const char *name; /* Codec name */ 847 const char *codec_name; /* for multi-codec */ 848 849 /* codec/machine specific init - e.g. add machine controls */ 850 int (*init)(struct snd_soc_dapm_context *dapm); 851 }; 852 853 /* SoC card */ 854 struct snd_soc_card { 855 const char *name; 856 const char *long_name; 857 const char *driver_name; 858 struct device *dev; 859 struct snd_card *snd_card; 860 struct module *owner; 861 862 struct list_head list; 863 struct mutex mutex; 864 struct mutex dapm_mutex; 865 866 bool instantiated; 867 868 int (*probe)(struct snd_soc_card *card); 869 int (*late_probe)(struct snd_soc_card *card); 870 int (*remove)(struct snd_soc_card *card); 871 872 /* the pre and post PM functions are used to do any PM work before and 873 * after the codec and DAI's do any PM work. */ 874 int (*suspend_pre)(struct snd_soc_card *card); 875 int (*suspend_post)(struct snd_soc_card *card); 876 int (*resume_pre)(struct snd_soc_card *card); 877 int (*resume_post)(struct snd_soc_card *card); 878 879 /* callbacks */ 880 int (*set_bias_level)(struct snd_soc_card *, 881 struct snd_soc_dapm_context *dapm, 882 enum snd_soc_bias_level level); 883 int (*set_bias_level_post)(struct snd_soc_card *, 884 struct snd_soc_dapm_context *dapm, 885 enum snd_soc_bias_level level); 886 887 long pmdown_time; 888 889 /* CPU <--> Codec DAI links */ 890 struct snd_soc_dai_link *dai_link; 891 int num_links; 892 struct snd_soc_pcm_runtime *rtd; 893 int num_rtd; 894 895 /* optional codec specific configuration */ 896 struct snd_soc_codec_conf *codec_conf; 897 int num_configs; 898 899 /* 900 * optional auxiliary devices such as amplifiers or codecs with DAI 901 * link unused 902 */ 903 struct snd_soc_aux_dev *aux_dev; 904 int num_aux_devs; 905 struct snd_soc_pcm_runtime *rtd_aux; 906 int num_aux_rtd; 907 908 const struct snd_kcontrol_new *controls; 909 int num_controls; 910 911 /* 912 * Card-specific routes and widgets. 913 */ 914 const struct snd_soc_dapm_widget *dapm_widgets; 915 int num_dapm_widgets; 916 const struct snd_soc_dapm_route *dapm_routes; 917 int num_dapm_routes; 918 bool fully_routed; 919 920 struct work_struct deferred_resume_work; 921 922 /* lists of probed devices belonging to this card */ 923 struct list_head codec_dev_list; 924 struct list_head platform_dev_list; 925 struct list_head dai_dev_list; 926 927 struct list_head widgets; 928 struct list_head paths; 929 struct list_head dapm_list; 930 struct list_head dapm_dirty; 931 932 /* Generic DAPM context for the card */ 933 struct snd_soc_dapm_context dapm; 934 struct snd_soc_dapm_stats dapm_stats; 935 936 #ifdef CONFIG_DEBUG_FS 937 struct dentry *debugfs_card_root; 938 struct dentry *debugfs_pop_time; 939 #endif 940 u32 pop_time; 941 942 void *drvdata; 943 }; 944 945 /* SoC machine DAI configuration, glues a codec and cpu DAI together */ 946 struct snd_soc_pcm_runtime { 947 struct device *dev; 948 struct snd_soc_card *card; 949 struct snd_soc_dai_link *dai_link; 950 struct mutex pcm_mutex; 951 enum snd_soc_pcm_subclass pcm_subclass; 952 struct snd_pcm_ops ops; 953 954 unsigned int dev_registered:1; 955 956 /* Dynamic PCM BE runtime data */ 957 struct snd_soc_dpcm_runtime dpcm[2]; 958 959 long pmdown_time; 960 961 /* runtime devices */ 962 struct snd_pcm *pcm; 963 struct snd_soc_codec *codec; 964 struct snd_soc_platform *platform; 965 struct snd_soc_dai *codec_dai; 966 struct snd_soc_dai *cpu_dai; 967 968 struct delayed_work delayed_work; 969 #ifdef CONFIG_DEBUG_FS 970 struct dentry *debugfs_dpcm_root; 971 struct dentry *debugfs_dpcm_state; 972 #endif 973 }; 974 975 /* mixer control */ 976 struct soc_mixer_control { 977 int min, max, platform_max; 978 unsigned int reg, rreg, shift, rshift, invert; 979 }; 980 981 struct soc_bytes { 982 int base; 983 int num_regs; 984 u32 mask; 985 }; 986 987 /* multi register control */ 988 struct soc_mreg_control { 989 long min, max; 990 unsigned int regbase, regcount, nbits, invert; 991 }; 992 993 /* enumerated kcontrol */ 994 struct soc_enum { 995 unsigned short reg; 996 unsigned short reg2; 997 unsigned char shift_l; 998 unsigned char shift_r; 999 unsigned int max; 1000 unsigned int mask; 1001 const char * const *texts; 1002 const unsigned int *values; 1003 void *dapm; 1004 }; 1005 1006 /* codec IO */ 1007 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg); 1008 unsigned int snd_soc_write(struct snd_soc_codec *codec, 1009 unsigned int reg, unsigned int val); 1010 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec, 1011 unsigned int reg, const void *data, size_t len); 1012 1013 /* device driver data */ 1014 1015 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card, 1016 void *data) 1017 { 1018 card->drvdata = data; 1019 } 1020 1021 static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card) 1022 { 1023 return card->drvdata; 1024 } 1025 1026 static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec, 1027 void *data) 1028 { 1029 dev_set_drvdata(codec->dev, data); 1030 } 1031 1032 static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec) 1033 { 1034 return dev_get_drvdata(codec->dev); 1035 } 1036 1037 static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform, 1038 void *data) 1039 { 1040 dev_set_drvdata(platform->dev, data); 1041 } 1042 1043 static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform) 1044 { 1045 return dev_get_drvdata(platform->dev); 1046 } 1047 1048 static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd, 1049 void *data) 1050 { 1051 dev_set_drvdata(rtd->dev, data); 1052 } 1053 1054 static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd) 1055 { 1056 return dev_get_drvdata(rtd->dev); 1057 } 1058 1059 static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card) 1060 { 1061 INIT_LIST_HEAD(&card->dai_dev_list); 1062 INIT_LIST_HEAD(&card->codec_dev_list); 1063 INIT_LIST_HEAD(&card->platform_dev_list); 1064 INIT_LIST_HEAD(&card->widgets); 1065 INIT_LIST_HEAD(&card->paths); 1066 INIT_LIST_HEAD(&card->dapm_list); 1067 } 1068 1069 static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc) 1070 { 1071 if (mc->reg == mc->rreg && mc->shift == mc->rshift) 1072 return 0; 1073 /* 1074 * mc->reg == mc->rreg && mc->shift != mc->rshift, or 1075 * mc->reg != mc->rreg means that the control is 1076 * stereo (bits in one register or in two registers) 1077 */ 1078 return 1; 1079 } 1080 1081 int snd_soc_util_init(void); 1082 void snd_soc_util_exit(void); 1083 1084 int snd_soc_of_parse_card_name(struct snd_soc_card *card, 1085 const char *propname); 1086 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, 1087 const char *propname); 1088 1089 #include <sound/soc-dai.h> 1090 1091 #ifdef CONFIG_DEBUG_FS 1092 extern struct dentry *snd_soc_debugfs_root; 1093 #endif 1094 1095 extern const struct dev_pm_ops snd_soc_pm_ops; 1096 1097 #endif 1098