Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1 | /* |
| 2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management |
| 3 | * |
| 4 | * Copyright 2005 Wolfson Microelectronics PLC. |
| 5 | * Author: Liam Girdwood |
| 6 | * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | * |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 13 | * Features: |
| 14 | * o Changes power status of internal codec blocks depending on the |
| 15 | * dynamic configuration of codec internal audio paths and active |
| 16 | * DAC's/ADC's. |
| 17 | * o Platform power domain - can support external components i.e. amps and |
| 18 | * mic/meadphone insertion events. |
| 19 | * o Automatic Mic Bias support |
| 20 | * o Jack insertion power event initiation - e.g. hp insertion will enable |
| 21 | * sinks, dacs, etc |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 22 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 23 | * device reopen. |
| 24 | * |
| 25 | * Todo: |
| 26 | * o DAPM power change sequencing - allow for configurable per |
| 27 | * codec sequences. |
| 28 | * o Support for analogue bias optimisation. |
| 29 | * o Support for reduced codec oversampling rates. |
| 30 | * o Support for reduced codec bias currents. |
| 31 | */ |
| 32 | |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/moduleparam.h> |
| 35 | #include <linux/init.h> |
| 36 | #include <linux/delay.h> |
| 37 | #include <linux/pm.h> |
| 38 | #include <linux/bitops.h> |
| 39 | #include <linux/platform_device.h> |
| 40 | #include <linux/jiffies.h> |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 41 | #include <sound/core.h> |
| 42 | #include <sound/pcm.h> |
| 43 | #include <sound/pcm_params.h> |
| 44 | #include <sound/soc-dapm.h> |
| 45 | #include <sound/initval.h> |
| 46 | |
| 47 | /* debug */ |
Mark Brown | c1286b8 | 2008-07-07 19:26:03 +0100 | [diff] [blame] | 48 | #ifdef DEBUG |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 49 | #define dump_dapm(codec, action) dbg_dump_dapm(codec, action) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 50 | #else |
| 51 | #define dump_dapm(codec, action) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 52 | #endif |
| 53 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 54 | /* dapm power sequences - make this per codec in the future */ |
| 55 | static int dapm_up_seq[] = { |
| 56 | snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic, |
| 57 | snd_soc_dapm_mux, snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_pga, |
| 58 | snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post |
| 59 | }; |
| 60 | static int dapm_down_seq[] = { |
| 61 | snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, |
| 62 | snd_soc_dapm_pga, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic, |
| 63 | snd_soc_dapm_micbias, snd_soc_dapm_mux, snd_soc_dapm_post |
| 64 | }; |
| 65 | |
| 66 | static int dapm_status = 1; |
| 67 | module_param(dapm_status, int, 0); |
| 68 | MODULE_PARM_DESC(dapm_status, "enable DPM sysfs entries"); |
| 69 | |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 70 | static unsigned int pop_time; |
| 71 | |
| 72 | static void pop_wait(void) |
| 73 | { |
| 74 | if (pop_time) |
| 75 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); |
| 76 | } |
| 77 | |
| 78 | static void pop_dbg(const char *fmt, ...) |
| 79 | { |
| 80 | va_list args; |
| 81 | |
| 82 | va_start(args, fmt); |
| 83 | |
| 84 | if (pop_time) { |
| 85 | vprintk(fmt, args); |
| 86 | pop_wait(); |
| 87 | } |
| 88 | |
| 89 | va_end(args); |
| 90 | } |
| 91 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 92 | /* create a new dapm widget */ |
Takashi Iwai | 88cb429 | 2007-02-05 14:56:20 +0100 | [diff] [blame] | 93 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 94 | const struct snd_soc_dapm_widget *_widget) |
| 95 | { |
Takashi Iwai | 88cb429 | 2007-02-05 14:56:20 +0100 | [diff] [blame] | 96 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | /* set up initial codec paths */ |
| 100 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, |
| 101 | struct snd_soc_dapm_path *p, int i) |
| 102 | { |
| 103 | switch (w->id) { |
| 104 | case snd_soc_dapm_switch: |
| 105 | case snd_soc_dapm_mixer: { |
| 106 | int val; |
| 107 | int reg = w->kcontrols[i].private_value & 0xff; |
| 108 | int shift = (w->kcontrols[i].private_value >> 8) & 0x0f; |
| 109 | int mask = (w->kcontrols[i].private_value >> 16) & 0xff; |
| 110 | int invert = (w->kcontrols[i].private_value >> 24) & 0x01; |
| 111 | |
| 112 | val = snd_soc_read(w->codec, reg); |
| 113 | val = (val >> shift) & mask; |
| 114 | |
| 115 | if ((invert && !val) || (!invert && val)) |
| 116 | p->connect = 1; |
| 117 | else |
| 118 | p->connect = 0; |
| 119 | } |
| 120 | break; |
| 121 | case snd_soc_dapm_mux: { |
| 122 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; |
| 123 | int val, item, bitmask; |
| 124 | |
| 125 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) |
| 126 | ; |
| 127 | val = snd_soc_read(w->codec, e->reg); |
| 128 | item = (val >> e->shift_l) & (bitmask - 1); |
| 129 | |
| 130 | p->connect = 0; |
| 131 | for (i = 0; i < e->mask; i++) { |
| 132 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
| 133 | p->connect = 1; |
| 134 | } |
| 135 | } |
| 136 | break; |
| 137 | /* does not effect routing - always connected */ |
| 138 | case snd_soc_dapm_pga: |
| 139 | case snd_soc_dapm_output: |
| 140 | case snd_soc_dapm_adc: |
| 141 | case snd_soc_dapm_input: |
| 142 | case snd_soc_dapm_dac: |
| 143 | case snd_soc_dapm_micbias: |
| 144 | case snd_soc_dapm_vmid: |
| 145 | p->connect = 1; |
| 146 | break; |
| 147 | /* does effect routing - dynamically connected */ |
| 148 | case snd_soc_dapm_hp: |
| 149 | case snd_soc_dapm_mic: |
| 150 | case snd_soc_dapm_spk: |
| 151 | case snd_soc_dapm_line: |
| 152 | case snd_soc_dapm_pre: |
| 153 | case snd_soc_dapm_post: |
| 154 | p->connect = 0; |
| 155 | break; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /* connect mux widget to it's interconnecting audio paths */ |
| 160 | static int dapm_connect_mux(struct snd_soc_codec *codec, |
| 161 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
| 162 | struct snd_soc_dapm_path *path, const char *control_name, |
| 163 | const struct snd_kcontrol_new *kcontrol) |
| 164 | { |
| 165 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 166 | int i; |
| 167 | |
| 168 | for (i = 0; i < e->mask; i++) { |
| 169 | if (!(strcmp(control_name, e->texts[i]))) { |
| 170 | list_add(&path->list, &codec->dapm_paths); |
| 171 | list_add(&path->list_sink, &dest->sources); |
| 172 | list_add(&path->list_source, &src->sinks); |
| 173 | path->name = (char*)e->texts[i]; |
| 174 | dapm_set_path_status(dest, path, 0); |
| 175 | return 0; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | return -ENODEV; |
| 180 | } |
| 181 | |
| 182 | /* connect mixer widget to it's interconnecting audio paths */ |
| 183 | static int dapm_connect_mixer(struct snd_soc_codec *codec, |
| 184 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
| 185 | struct snd_soc_dapm_path *path, const char *control_name) |
| 186 | { |
| 187 | int i; |
| 188 | |
| 189 | /* search for mixer kcontrol */ |
| 190 | for (i = 0; i < dest->num_kcontrols; i++) { |
| 191 | if (!strcmp(control_name, dest->kcontrols[i].name)) { |
| 192 | list_add(&path->list, &codec->dapm_paths); |
| 193 | list_add(&path->list_sink, &dest->sources); |
| 194 | list_add(&path->list_source, &src->sinks); |
| 195 | path->name = dest->kcontrols[i].name; |
| 196 | dapm_set_path_status(dest, path, i); |
| 197 | return 0; |
| 198 | } |
| 199 | } |
| 200 | return -ENODEV; |
| 201 | } |
| 202 | |
| 203 | /* update dapm codec register bits */ |
| 204 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) |
| 205 | { |
| 206 | int change, power; |
| 207 | unsigned short old, new; |
| 208 | struct snd_soc_codec *codec = widget->codec; |
| 209 | |
| 210 | /* check for valid widgets */ |
| 211 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || |
| 212 | widget->id == snd_soc_dapm_output || |
| 213 | widget->id == snd_soc_dapm_hp || |
| 214 | widget->id == snd_soc_dapm_mic || |
| 215 | widget->id == snd_soc_dapm_line || |
| 216 | widget->id == snd_soc_dapm_spk) |
| 217 | return 0; |
| 218 | |
| 219 | power = widget->power; |
| 220 | if (widget->invert) |
| 221 | power = (power ? 0:1); |
| 222 | |
| 223 | old = snd_soc_read(codec, widget->reg); |
| 224 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); |
| 225 | |
| 226 | change = old != new; |
| 227 | if (change) { |
| 228 | pop_dbg("pop test %s : %s in %d ms\n", widget->name, |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 229 | widget->power ? "on" : "off", pop_time); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 230 | snd_soc_write(codec, widget->reg, new); |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 231 | pop_wait(); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 232 | } |
Mark Brown | c1286b8 | 2008-07-07 19:26:03 +0100 | [diff] [blame] | 233 | pr_debug("reg %x old %x new %x change %d\n", widget->reg, |
| 234 | old, new, change); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 235 | return change; |
| 236 | } |
| 237 | |
| 238 | /* ramps the volume up or down to minimise pops before or after a |
| 239 | * DAPM power event */ |
| 240 | static int dapm_set_pga(struct snd_soc_dapm_widget *widget, int power) |
| 241 | { |
| 242 | const struct snd_kcontrol_new *k = widget->kcontrols; |
| 243 | |
| 244 | if (widget->muted && !power) |
| 245 | return 0; |
| 246 | if (!widget->muted && power) |
| 247 | return 0; |
| 248 | |
| 249 | if (widget->num_kcontrols && k) { |
| 250 | int reg = k->private_value & 0xff; |
| 251 | int shift = (k->private_value >> 8) & 0x0f; |
| 252 | int mask = (k->private_value >> 16) & 0xff; |
| 253 | int invert = (k->private_value >> 24) & 0x01; |
| 254 | |
| 255 | if (power) { |
| 256 | int i; |
| 257 | /* power up has happended, increase volume to last level */ |
| 258 | if (invert) { |
| 259 | for (i = mask; i > widget->saved_value; i--) |
| 260 | snd_soc_update_bits(widget->codec, reg, mask, i); |
| 261 | } else { |
| 262 | for (i = 0; i < widget->saved_value; i++) |
| 263 | snd_soc_update_bits(widget->codec, reg, mask, i); |
| 264 | } |
| 265 | widget->muted = 0; |
| 266 | } else { |
| 267 | /* power down is about to occur, decrease volume to mute */ |
| 268 | int val = snd_soc_read(widget->codec, reg); |
| 269 | int i = widget->saved_value = (val >> shift) & mask; |
| 270 | if (invert) { |
| 271 | for (; i < mask; i++) |
| 272 | snd_soc_update_bits(widget->codec, reg, mask, i); |
| 273 | } else { |
| 274 | for (; i > 0; i--) |
| 275 | snd_soc_update_bits(widget->codec, reg, mask, i); |
| 276 | } |
| 277 | widget->muted = 1; |
| 278 | } |
| 279 | } |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | /* create new dapm mixer control */ |
| 284 | static int dapm_new_mixer(struct snd_soc_codec *codec, |
| 285 | struct snd_soc_dapm_widget *w) |
| 286 | { |
| 287 | int i, ret = 0; |
| 288 | char name[32]; |
| 289 | struct snd_soc_dapm_path *path; |
| 290 | |
| 291 | /* add kcontrol */ |
| 292 | for (i = 0; i < w->num_kcontrols; i++) { |
| 293 | |
| 294 | /* match name */ |
| 295 | list_for_each_entry(path, &w->sources, list_sink) { |
| 296 | |
| 297 | /* mixer/mux paths name must match control name */ |
| 298 | if (path->name != (char*)w->kcontrols[i].name) |
| 299 | continue; |
| 300 | |
| 301 | /* add dapm control with long name */ |
| 302 | snprintf(name, 32, "%s %s", w->name, w->kcontrols[i].name); |
| 303 | path->long_name = kstrdup (name, GFP_KERNEL); |
| 304 | if (path->long_name == NULL) |
| 305 | return -ENOMEM; |
| 306 | |
| 307 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
| 308 | path->long_name); |
| 309 | ret = snd_ctl_add(codec->card, path->kcontrol); |
| 310 | if (ret < 0) { |
| 311 | printk(KERN_ERR "asoc: failed to add dapm kcontrol %s\n", |
| 312 | path->long_name); |
| 313 | kfree(path->long_name); |
| 314 | path->long_name = NULL; |
| 315 | return ret; |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | return ret; |
| 320 | } |
| 321 | |
| 322 | /* create new dapm mux control */ |
| 323 | static int dapm_new_mux(struct snd_soc_codec *codec, |
| 324 | struct snd_soc_dapm_widget *w) |
| 325 | { |
| 326 | struct snd_soc_dapm_path *path = NULL; |
| 327 | struct snd_kcontrol *kcontrol; |
| 328 | int ret = 0; |
| 329 | |
| 330 | if (!w->num_kcontrols) { |
| 331 | printk(KERN_ERR "asoc: mux %s has no controls\n", w->name); |
| 332 | return -EINVAL; |
| 333 | } |
| 334 | |
| 335 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); |
| 336 | ret = snd_ctl_add(codec->card, kcontrol); |
| 337 | if (ret < 0) |
| 338 | goto err; |
| 339 | |
| 340 | list_for_each_entry(path, &w->sources, list_sink) |
| 341 | path->kcontrol = kcontrol; |
| 342 | |
| 343 | return ret; |
| 344 | |
| 345 | err: |
| 346 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); |
| 347 | return ret; |
| 348 | } |
| 349 | |
| 350 | /* create new dapm volume control */ |
| 351 | static int dapm_new_pga(struct snd_soc_codec *codec, |
| 352 | struct snd_soc_dapm_widget *w) |
| 353 | { |
| 354 | struct snd_kcontrol *kcontrol; |
| 355 | int ret = 0; |
| 356 | |
| 357 | if (!w->num_kcontrols) |
| 358 | return -EINVAL; |
| 359 | |
| 360 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); |
| 361 | ret = snd_ctl_add(codec->card, kcontrol); |
| 362 | if (ret < 0) { |
| 363 | printk(KERN_ERR "asoc: failed to add kcontrol %s\n", w->name); |
| 364 | return ret; |
| 365 | } |
| 366 | |
| 367 | return ret; |
| 368 | } |
| 369 | |
| 370 | /* reset 'walked' bit for each dapm path */ |
| 371 | static inline void dapm_clear_walk(struct snd_soc_codec *codec) |
| 372 | { |
| 373 | struct snd_soc_dapm_path *p; |
| 374 | |
| 375 | list_for_each_entry(p, &codec->dapm_paths, list) |
| 376 | p->walked = 0; |
| 377 | } |
| 378 | |
| 379 | /* |
| 380 | * Recursively check for a completed path to an active or physically connected |
| 381 | * output widget. Returns number of complete paths. |
| 382 | */ |
| 383 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) |
| 384 | { |
| 385 | struct snd_soc_dapm_path *path; |
| 386 | int con = 0; |
| 387 | |
| 388 | if (widget->id == snd_soc_dapm_adc && widget->active) |
| 389 | return 1; |
| 390 | |
| 391 | if (widget->connected) { |
| 392 | /* connected pin ? */ |
| 393 | if (widget->id == snd_soc_dapm_output && !widget->ext) |
| 394 | return 1; |
| 395 | |
| 396 | /* connected jack or spk ? */ |
| 397 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || |
| 398 | widget->id == snd_soc_dapm_line) |
| 399 | return 1; |
| 400 | } |
| 401 | |
| 402 | list_for_each_entry(path, &widget->sinks, list_source) { |
| 403 | if (path->walked) |
| 404 | continue; |
| 405 | |
| 406 | if (path->sink && path->connect) { |
| 407 | path->walked = 1; |
| 408 | con += is_connected_output_ep(path->sink); |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | return con; |
| 413 | } |
| 414 | |
| 415 | /* |
| 416 | * Recursively check for a completed path to an active or physically connected |
| 417 | * input widget. Returns number of complete paths. |
| 418 | */ |
| 419 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) |
| 420 | { |
| 421 | struct snd_soc_dapm_path *path; |
| 422 | int con = 0; |
| 423 | |
| 424 | /* active stream ? */ |
| 425 | if (widget->id == snd_soc_dapm_dac && widget->active) |
| 426 | return 1; |
| 427 | |
| 428 | if (widget->connected) { |
| 429 | /* connected pin ? */ |
| 430 | if (widget->id == snd_soc_dapm_input && !widget->ext) |
| 431 | return 1; |
| 432 | |
| 433 | /* connected VMID/Bias for lower pops */ |
| 434 | if (widget->id == snd_soc_dapm_vmid) |
| 435 | return 1; |
| 436 | |
| 437 | /* connected jack ? */ |
| 438 | if (widget->id == snd_soc_dapm_mic || widget->id == snd_soc_dapm_line) |
| 439 | return 1; |
| 440 | } |
| 441 | |
| 442 | list_for_each_entry(path, &widget->sources, list_sink) { |
| 443 | if (path->walked) |
| 444 | continue; |
| 445 | |
| 446 | if (path->source && path->connect) { |
| 447 | path->walked = 1; |
| 448 | con += is_connected_input_ep(path->source); |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | return con; |
| 453 | } |
| 454 | |
| 455 | /* |
Jarkko Nikula | e2be2cc | 2008-06-25 14:42:07 +0300 | [diff] [blame] | 456 | * Handler for generic register modifier widget. |
| 457 | */ |
| 458 | int dapm_reg_event(struct snd_soc_dapm_widget *w, |
| 459 | struct snd_kcontrol *kcontrol, int event) |
| 460 | { |
| 461 | unsigned int val; |
| 462 | |
| 463 | if (SND_SOC_DAPM_EVENT_ON(event)) |
| 464 | val = w->on_val; |
| 465 | else |
| 466 | val = w->off_val; |
| 467 | |
| 468 | snd_soc_update_bits(w->codec, -(w->reg + 1), |
| 469 | w->mask << w->shift, val << w->shift); |
| 470 | |
| 471 | return 0; |
| 472 | } |
| 473 | |
| 474 | /* |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 475 | * Scan each dapm widget for complete audio path. |
| 476 | * A complete path is a route that has valid endpoints i.e.:- |
| 477 | * |
| 478 | * o DAC to output pin. |
| 479 | * o Input Pin to ADC. |
| 480 | * o Input pin to Output pin (bypass, sidetone) |
| 481 | * o DAC to ADC (loopback). |
| 482 | */ |
Adrian Bunk | d9c96cf | 2006-11-28 12:10:09 +0100 | [diff] [blame] | 483 | static int dapm_power_widgets(struct snd_soc_codec *codec, int event) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 484 | { |
| 485 | struct snd_soc_dapm_widget *w; |
| 486 | int in, out, i, c = 1, *seq = NULL, ret = 0, power_change, power; |
| 487 | |
| 488 | /* do we have a sequenced stream event */ |
| 489 | if (event == SND_SOC_DAPM_STREAM_START) { |
| 490 | c = ARRAY_SIZE(dapm_up_seq); |
| 491 | seq = dapm_up_seq; |
| 492 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { |
| 493 | c = ARRAY_SIZE(dapm_down_seq); |
| 494 | seq = dapm_down_seq; |
| 495 | } |
| 496 | |
| 497 | for(i = 0; i < c; i++) { |
| 498 | list_for_each_entry(w, &codec->dapm_widgets, list) { |
| 499 | |
| 500 | /* is widget in stream order */ |
| 501 | if (seq && seq[i] && w->id != seq[i]) |
| 502 | continue; |
| 503 | |
| 504 | /* vmid - no action */ |
| 505 | if (w->id == snd_soc_dapm_vmid) |
| 506 | continue; |
| 507 | |
| 508 | /* active ADC */ |
| 509 | if (w->id == snd_soc_dapm_adc && w->active) { |
| 510 | in = is_connected_input_ep(w); |
| 511 | dapm_clear_walk(w->codec); |
| 512 | w->power = (in != 0) ? 1 : 0; |
| 513 | dapm_update_bits(w); |
| 514 | continue; |
| 515 | } |
| 516 | |
| 517 | /* active DAC */ |
| 518 | if (w->id == snd_soc_dapm_dac && w->active) { |
| 519 | out = is_connected_output_ep(w); |
| 520 | dapm_clear_walk(w->codec); |
| 521 | w->power = (out != 0) ? 1 : 0; |
| 522 | dapm_update_bits(w); |
| 523 | continue; |
| 524 | } |
| 525 | |
| 526 | /* programmable gain/attenuation */ |
| 527 | if (w->id == snd_soc_dapm_pga) { |
| 528 | int on; |
| 529 | in = is_connected_input_ep(w); |
| 530 | dapm_clear_walk(w->codec); |
| 531 | out = is_connected_output_ep(w); |
| 532 | dapm_clear_walk(w->codec); |
| 533 | w->power = on = (out != 0 && in != 0) ? 1 : 0; |
| 534 | |
| 535 | if (!on) |
| 536 | dapm_set_pga(w, on); /* lower volume to reduce pops */ |
| 537 | dapm_update_bits(w); |
| 538 | if (on) |
| 539 | dapm_set_pga(w, on); /* restore volume from zero */ |
| 540 | |
| 541 | continue; |
| 542 | } |
| 543 | |
| 544 | /* pre and post event widgets */ |
| 545 | if (w->id == snd_soc_dapm_pre) { |
| 546 | if (!w->event) |
| 547 | continue; |
| 548 | |
| 549 | if (event == SND_SOC_DAPM_STREAM_START) { |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 550 | ret = w->event(w, |
| 551 | NULL, SND_SOC_DAPM_PRE_PMU); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 552 | if (ret < 0) |
| 553 | return ret; |
| 554 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 555 | ret = w->event(w, |
| 556 | NULL, SND_SOC_DAPM_PRE_PMD); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 557 | if (ret < 0) |
| 558 | return ret; |
| 559 | } |
| 560 | continue; |
| 561 | } |
| 562 | if (w->id == snd_soc_dapm_post) { |
| 563 | if (!w->event) |
| 564 | continue; |
| 565 | |
| 566 | if (event == SND_SOC_DAPM_STREAM_START) { |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 567 | ret = w->event(w, |
| 568 | NULL, SND_SOC_DAPM_POST_PMU); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 569 | if (ret < 0) |
| 570 | return ret; |
| 571 | } else if (event == SND_SOC_DAPM_STREAM_STOP) { |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 572 | ret = w->event(w, |
| 573 | NULL, SND_SOC_DAPM_POST_PMD); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 574 | if (ret < 0) |
| 575 | return ret; |
| 576 | } |
| 577 | continue; |
| 578 | } |
| 579 | |
| 580 | /* all other widgets */ |
| 581 | in = is_connected_input_ep(w); |
| 582 | dapm_clear_walk(w->codec); |
| 583 | out = is_connected_output_ep(w); |
| 584 | dapm_clear_walk(w->codec); |
| 585 | power = (out != 0 && in != 0) ? 1 : 0; |
| 586 | power_change = (w->power == power) ? 0: 1; |
| 587 | w->power = power; |
| 588 | |
Mark Brown | 2927d6e | 2008-07-17 15:06:50 +0100 | [diff] [blame^] | 589 | if (!power_change) |
| 590 | continue; |
| 591 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 592 | /* call any power change event handlers */ |
Mark Brown | 2927d6e | 2008-07-17 15:06:50 +0100 | [diff] [blame^] | 593 | if (w->event) |
| 594 | pr_debug("power %s event for %s flags %x\n", |
| 595 | w->power ? "on" : "off", |
| 596 | w->name, w->event_flags); |
| 597 | |
| 598 | /* power up pre event */ |
| 599 | if (power && w->event && |
| 600 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { |
| 601 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); |
| 602 | if (ret < 0) |
| 603 | return ret; |
| 604 | } |
| 605 | |
| 606 | /* power down pre event */ |
| 607 | if (!power && w->event && |
| 608 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { |
| 609 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); |
| 610 | if (ret < 0) |
| 611 | return ret; |
| 612 | } |
| 613 | |
| 614 | dapm_update_bits(w); |
| 615 | |
| 616 | /* power up post event */ |
| 617 | if (power && w->event && |
| 618 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { |
| 619 | ret = w->event(w, |
| 620 | NULL, SND_SOC_DAPM_POST_PMU); |
| 621 | if (ret < 0) |
| 622 | return ret; |
| 623 | } |
| 624 | |
| 625 | /* power down post event */ |
| 626 | if (!power && w->event && |
| 627 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { |
| 628 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); |
| 629 | if (ret < 0) |
| 630 | return ret; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 631 | } |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | return ret; |
| 636 | } |
| 637 | |
Mark Brown | c1286b8 | 2008-07-07 19:26:03 +0100 | [diff] [blame] | 638 | #ifdef DEBUG |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 639 | static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) |
| 640 | { |
| 641 | struct snd_soc_dapm_widget *w; |
| 642 | struct snd_soc_dapm_path *p = NULL; |
| 643 | int in, out; |
| 644 | |
| 645 | printk("DAPM %s %s\n", codec->name, action); |
| 646 | |
| 647 | list_for_each_entry(w, &codec->dapm_widgets, list) { |
| 648 | |
| 649 | /* only display widgets that effect routing */ |
| 650 | switch (w->id) { |
| 651 | case snd_soc_dapm_pre: |
| 652 | case snd_soc_dapm_post: |
| 653 | case snd_soc_dapm_vmid: |
| 654 | continue; |
| 655 | case snd_soc_dapm_mux: |
| 656 | case snd_soc_dapm_output: |
| 657 | case snd_soc_dapm_input: |
| 658 | case snd_soc_dapm_switch: |
| 659 | case snd_soc_dapm_hp: |
| 660 | case snd_soc_dapm_mic: |
| 661 | case snd_soc_dapm_spk: |
| 662 | case snd_soc_dapm_line: |
| 663 | case snd_soc_dapm_micbias: |
| 664 | case snd_soc_dapm_dac: |
| 665 | case snd_soc_dapm_adc: |
| 666 | case snd_soc_dapm_pga: |
| 667 | case snd_soc_dapm_mixer: |
| 668 | if (w->name) { |
| 669 | in = is_connected_input_ep(w); |
| 670 | dapm_clear_walk(w->codec); |
| 671 | out = is_connected_output_ep(w); |
| 672 | dapm_clear_walk(w->codec); |
| 673 | printk("%s: %s in %d out %d\n", w->name, |
| 674 | w->power ? "On":"Off",in, out); |
| 675 | |
| 676 | list_for_each_entry(p, &w->sources, list_sink) { |
| 677 | if (p->connect) |
| 678 | printk(" in %s %s\n", p->name ? p->name : "static", |
| 679 | p->source->name); |
| 680 | } |
| 681 | list_for_each_entry(p, &w->sinks, list_source) { |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 682 | if (p->connect) |
| 683 | printk(" out %s %s\n", p->name ? p->name : "static", |
| 684 | p->sink->name); |
| 685 | } |
| 686 | } |
| 687 | break; |
| 688 | } |
| 689 | } |
| 690 | } |
| 691 | #endif |
| 692 | |
| 693 | /* test and update the power status of a mux widget */ |
Adrian Bunk | d9c96cf | 2006-11-28 12:10:09 +0100 | [diff] [blame] | 694 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
| 695 | struct snd_kcontrol *kcontrol, int mask, |
| 696 | int val, struct soc_enum* e) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 697 | { |
| 698 | struct snd_soc_dapm_path *path; |
| 699 | int found = 0; |
| 700 | |
| 701 | if (widget->id != snd_soc_dapm_mux) |
| 702 | return -ENODEV; |
| 703 | |
| 704 | if (!snd_soc_test_bits(widget->codec, e->reg, mask, val)) |
| 705 | return 0; |
| 706 | |
| 707 | /* find dapm widget path assoc with kcontrol */ |
| 708 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { |
| 709 | if (path->kcontrol != kcontrol) |
| 710 | continue; |
| 711 | |
| 712 | if (!path->name || ! e->texts[val]) |
| 713 | continue; |
| 714 | |
| 715 | found = 1; |
| 716 | /* we now need to match the string in the enum to the path */ |
| 717 | if (!(strcmp(path->name, e->texts[val]))) |
| 718 | path->connect = 1; /* new connection */ |
| 719 | else |
| 720 | path->connect = 0; /* old connection must be powered down */ |
| 721 | } |
| 722 | |
Mark Brown | 3fccd8b | 2008-07-07 19:26:04 +0100 | [diff] [blame] | 723 | if (found) { |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 724 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
Mark Brown | 3fccd8b | 2008-07-07 19:26:04 +0100 | [diff] [blame] | 725 | dump_dapm(widget->codec, "mux power update"); |
| 726 | } |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 727 | |
| 728 | return 0; |
| 729 | } |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 730 | |
Milan plzik | 1b075e3 | 2008-01-10 14:39:46 +0100 | [diff] [blame] | 731 | /* test and update the power status of a mixer or switch widget */ |
Adrian Bunk | d9c96cf | 2006-11-28 12:10:09 +0100 | [diff] [blame] | 732 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
| 733 | struct snd_kcontrol *kcontrol, int reg, |
| 734 | int val_mask, int val, int invert) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 735 | { |
| 736 | struct snd_soc_dapm_path *path; |
| 737 | int found = 0; |
| 738 | |
Milan plzik | 1b075e3 | 2008-01-10 14:39:46 +0100 | [diff] [blame] | 739 | if (widget->id != snd_soc_dapm_mixer && |
| 740 | widget->id != snd_soc_dapm_switch) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 741 | return -ENODEV; |
| 742 | |
| 743 | if (!snd_soc_test_bits(widget->codec, reg, val_mask, val)) |
| 744 | return 0; |
| 745 | |
| 746 | /* find dapm widget path assoc with kcontrol */ |
| 747 | list_for_each_entry(path, &widget->codec->dapm_paths, list) { |
| 748 | if (path->kcontrol != kcontrol) |
| 749 | continue; |
| 750 | |
| 751 | /* found, now check type */ |
| 752 | found = 1; |
| 753 | if (val) |
| 754 | /* new connection */ |
| 755 | path->connect = invert ? 0:1; |
| 756 | else |
| 757 | /* old connection must be powered down */ |
| 758 | path->connect = invert ? 1:0; |
| 759 | break; |
| 760 | } |
| 761 | |
Mark Brown | 3fccd8b | 2008-07-07 19:26:04 +0100 | [diff] [blame] | 762 | if (found) { |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 763 | dapm_power_widgets(widget->codec, SND_SOC_DAPM_STREAM_NOP); |
Mark Brown | 3fccd8b | 2008-07-07 19:26:04 +0100 | [diff] [blame] | 764 | dump_dapm(widget->codec, "mixer power update"); |
| 765 | } |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 766 | |
| 767 | return 0; |
| 768 | } |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 769 | |
| 770 | /* show dapm widget status in sys fs */ |
| 771 | static ssize_t dapm_widget_show(struct device *dev, |
| 772 | struct device_attribute *attr, char *buf) |
| 773 | { |
| 774 | struct snd_soc_device *devdata = dev_get_drvdata(dev); |
| 775 | struct snd_soc_codec *codec = devdata->codec; |
| 776 | struct snd_soc_dapm_widget *w; |
| 777 | int count = 0; |
| 778 | char *state = "not set"; |
| 779 | |
| 780 | list_for_each_entry(w, &codec->dapm_widgets, list) { |
| 781 | |
| 782 | /* only display widgets that burnm power */ |
| 783 | switch (w->id) { |
| 784 | case snd_soc_dapm_hp: |
| 785 | case snd_soc_dapm_mic: |
| 786 | case snd_soc_dapm_spk: |
| 787 | case snd_soc_dapm_line: |
| 788 | case snd_soc_dapm_micbias: |
| 789 | case snd_soc_dapm_dac: |
| 790 | case snd_soc_dapm_adc: |
| 791 | case snd_soc_dapm_pga: |
| 792 | case snd_soc_dapm_mixer: |
| 793 | if (w->name) |
| 794 | count += sprintf(buf + count, "%s: %s\n", |
| 795 | w->name, w->power ? "On":"Off"); |
| 796 | break; |
| 797 | default: |
| 798 | break; |
| 799 | } |
| 800 | } |
| 801 | |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 802 | switch (codec->bias_level) { |
| 803 | case SND_SOC_BIAS_ON: |
| 804 | state = "On"; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 805 | break; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 806 | case SND_SOC_BIAS_PREPARE: |
| 807 | state = "Prepare"; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 808 | break; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 809 | case SND_SOC_BIAS_STANDBY: |
| 810 | state = "Standby"; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 811 | break; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 812 | case SND_SOC_BIAS_OFF: |
| 813 | state = "Off"; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 814 | break; |
| 815 | } |
| 816 | count += sprintf(buf + count, "PM State: %s\n", state); |
| 817 | |
| 818 | return count; |
| 819 | } |
| 820 | |
| 821 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); |
| 822 | |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 823 | /* pop/click delay times */ |
| 824 | static ssize_t dapm_pop_time_show(struct device *dev, |
| 825 | struct device_attribute *attr, char *buf) |
| 826 | { |
| 827 | return sprintf(buf, "%d\n", pop_time); |
| 828 | } |
| 829 | |
| 830 | static ssize_t dapm_pop_time_store(struct device *dev, |
| 831 | struct device_attribute *attr, |
| 832 | const char *buf, size_t count) |
| 833 | |
| 834 | { |
Mark Brown | 73ead48 | 2008-07-04 16:01:14 +0100 | [diff] [blame] | 835 | unsigned long val; |
| 836 | |
| 837 | if (strict_strtoul(buf, 10, &val) >= 0) |
| 838 | pop_time = val; |
| 839 | else |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 840 | printk(KERN_ERR "Unable to parse pop_time setting\n"); |
| 841 | |
| 842 | return count; |
| 843 | } |
| 844 | |
| 845 | static DEVICE_ATTR(dapm_pop_time, 0744, dapm_pop_time_show, |
| 846 | dapm_pop_time_store); |
| 847 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 848 | int snd_soc_dapm_sys_add(struct device *dev) |
| 849 | { |
| 850 | int ret = 0; |
| 851 | |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 852 | if (dapm_status) { |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 853 | ret = device_create_file(dev, &dev_attr_dapm_widget); |
| 854 | |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 855 | if (ret == 0) |
| 856 | ret = device_create_file(dev, &dev_attr_dapm_pop_time); |
| 857 | } |
| 858 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 859 | return ret; |
| 860 | } |
| 861 | |
| 862 | static void snd_soc_dapm_sys_remove(struct device *dev) |
| 863 | { |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 864 | if (dapm_status) { |
| 865 | device_remove_file(dev, &dev_attr_dapm_pop_time); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 866 | device_remove_file(dev, &dev_attr_dapm_widget); |
Mark Brown | 15e4c72 | 2008-07-02 11:51:20 +0100 | [diff] [blame] | 867 | } |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 868 | } |
| 869 | |
| 870 | /* free all dapm widgets and resources */ |
Adrian Bunk | d9c96cf | 2006-11-28 12:10:09 +0100 | [diff] [blame] | 871 | static void dapm_free_widgets(struct snd_soc_codec *codec) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 872 | { |
| 873 | struct snd_soc_dapm_widget *w, *next_w; |
| 874 | struct snd_soc_dapm_path *p, *next_p; |
| 875 | |
| 876 | list_for_each_entry_safe(w, next_w, &codec->dapm_widgets, list) { |
| 877 | list_del(&w->list); |
| 878 | kfree(w); |
| 879 | } |
| 880 | |
| 881 | list_for_each_entry_safe(p, next_p, &codec->dapm_paths, list) { |
| 882 | list_del(&p->list); |
| 883 | kfree(p->long_name); |
| 884 | kfree(p); |
| 885 | } |
| 886 | } |
| 887 | |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 888 | static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec, |
| 889 | char *pin, int status) |
| 890 | { |
| 891 | struct snd_soc_dapm_widget *w; |
| 892 | |
| 893 | list_for_each_entry(w, &codec->dapm_widgets, list) { |
| 894 | if (!strcmp(w->name, pin)) { |
Mark Brown | c1286b8 | 2008-07-07 19:26:03 +0100 | [diff] [blame] | 895 | pr_debug("dapm: %s: pin %s\n", codec->name, pin); |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 896 | w->connected = status; |
| 897 | return 0; |
| 898 | } |
| 899 | } |
| 900 | |
Mark Brown | c1286b8 | 2008-07-07 19:26:03 +0100 | [diff] [blame] | 901 | pr_err("dapm: %s: configuring unknown pin %s\n", codec->name, pin); |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 902 | return -EINVAL; |
| 903 | } |
| 904 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 905 | /** |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 906 | * snd_soc_dapm_sync - scan and power dapm paths |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 907 | * @codec: audio codec |
| 908 | * |
| 909 | * Walks all dapm audio paths and powers widgets according to their |
| 910 | * stream or path usage. |
| 911 | * |
| 912 | * Returns 0 for success. |
| 913 | */ |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 914 | int snd_soc_dapm_sync(struct snd_soc_codec *codec) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 915 | { |
Mark Brown | 3fccd8b | 2008-07-07 19:26:04 +0100 | [diff] [blame] | 916 | int ret = dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
| 917 | dump_dapm(codec, "sync"); |
| 918 | return ret; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 919 | } |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 920 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 921 | |
Mark Brown | 105f1c2 | 2008-05-13 14:52:19 +0200 | [diff] [blame] | 922 | static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, |
| 923 | const char *sink, const char *control, const char *source) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 924 | { |
| 925 | struct snd_soc_dapm_path *path; |
| 926 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; |
| 927 | int ret = 0; |
| 928 | |
| 929 | /* find src and dest widgets */ |
| 930 | list_for_each_entry(w, &codec->dapm_widgets, list) { |
| 931 | |
| 932 | if (!wsink && !(strcmp(w->name, sink))) { |
| 933 | wsink = w; |
| 934 | continue; |
| 935 | } |
| 936 | if (!wsource && !(strcmp(w->name, source))) { |
| 937 | wsource = w; |
| 938 | } |
| 939 | } |
| 940 | |
| 941 | if (wsource == NULL || wsink == NULL) |
| 942 | return -ENODEV; |
| 943 | |
| 944 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); |
| 945 | if (!path) |
| 946 | return -ENOMEM; |
| 947 | |
| 948 | path->source = wsource; |
| 949 | path->sink = wsink; |
| 950 | INIT_LIST_HEAD(&path->list); |
| 951 | INIT_LIST_HEAD(&path->list_source); |
| 952 | INIT_LIST_HEAD(&path->list_sink); |
| 953 | |
| 954 | /* check for external widgets */ |
| 955 | if (wsink->id == snd_soc_dapm_input) { |
| 956 | if (wsource->id == snd_soc_dapm_micbias || |
| 957 | wsource->id == snd_soc_dapm_mic || |
Seth Forshee | 1e39221 | 2007-04-16 15:36:42 +0200 | [diff] [blame] | 958 | wsink->id == snd_soc_dapm_line || |
| 959 | wsink->id == snd_soc_dapm_output) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 960 | wsink->ext = 1; |
| 961 | } |
| 962 | if (wsource->id == snd_soc_dapm_output) { |
| 963 | if (wsink->id == snd_soc_dapm_spk || |
| 964 | wsink->id == snd_soc_dapm_hp || |
Seth Forshee | 1e39221 | 2007-04-16 15:36:42 +0200 | [diff] [blame] | 965 | wsink->id == snd_soc_dapm_line || |
| 966 | wsink->id == snd_soc_dapm_input) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 967 | wsource->ext = 1; |
| 968 | } |
| 969 | |
| 970 | /* connect static paths */ |
| 971 | if (control == NULL) { |
| 972 | list_add(&path->list, &codec->dapm_paths); |
| 973 | list_add(&path->list_sink, &wsink->sources); |
| 974 | list_add(&path->list_source, &wsource->sinks); |
| 975 | path->connect = 1; |
| 976 | return 0; |
| 977 | } |
| 978 | |
| 979 | /* connect dynamic paths */ |
| 980 | switch(wsink->id) { |
| 981 | case snd_soc_dapm_adc: |
| 982 | case snd_soc_dapm_dac: |
| 983 | case snd_soc_dapm_pga: |
| 984 | case snd_soc_dapm_input: |
| 985 | case snd_soc_dapm_output: |
| 986 | case snd_soc_dapm_micbias: |
| 987 | case snd_soc_dapm_vmid: |
| 988 | case snd_soc_dapm_pre: |
| 989 | case snd_soc_dapm_post: |
| 990 | list_add(&path->list, &codec->dapm_paths); |
| 991 | list_add(&path->list_sink, &wsink->sources); |
| 992 | list_add(&path->list_source, &wsource->sinks); |
| 993 | path->connect = 1; |
| 994 | return 0; |
| 995 | case snd_soc_dapm_mux: |
| 996 | ret = dapm_connect_mux(codec, wsource, wsink, path, control, |
| 997 | &wsink->kcontrols[0]); |
| 998 | if (ret != 0) |
| 999 | goto err; |
| 1000 | break; |
| 1001 | case snd_soc_dapm_switch: |
| 1002 | case snd_soc_dapm_mixer: |
| 1003 | ret = dapm_connect_mixer(codec, wsource, wsink, path, control); |
| 1004 | if (ret != 0) |
| 1005 | goto err; |
| 1006 | break; |
| 1007 | case snd_soc_dapm_hp: |
| 1008 | case snd_soc_dapm_mic: |
| 1009 | case snd_soc_dapm_line: |
| 1010 | case snd_soc_dapm_spk: |
| 1011 | list_add(&path->list, &codec->dapm_paths); |
| 1012 | list_add(&path->list_sink, &wsink->sources); |
| 1013 | list_add(&path->list_source, &wsource->sinks); |
| 1014 | path->connect = 0; |
| 1015 | return 0; |
| 1016 | } |
| 1017 | return 0; |
| 1018 | |
| 1019 | err: |
| 1020 | printk(KERN_WARNING "asoc: no dapm match for %s --> %s --> %s\n", source, |
| 1021 | control, sink); |
| 1022 | kfree(path); |
| 1023 | return ret; |
| 1024 | } |
Mark Brown | 105f1c2 | 2008-05-13 14:52:19 +0200 | [diff] [blame] | 1025 | |
| 1026 | /** |
| 1027 | * snd_soc_dapm_connect_input - connect dapm widgets |
| 1028 | * @codec: audio codec |
| 1029 | * @sink: name of target widget |
| 1030 | * @control: mixer control name |
| 1031 | * @source: name of source name |
| 1032 | * |
| 1033 | * Connects 2 dapm widgets together via a named audio path. The sink is |
| 1034 | * the widget receiving the audio signal, whilst the source is the sender |
| 1035 | * of the audio signal. |
| 1036 | * |
| 1037 | * This function has been deprecated in favour of snd_soc_dapm_add_routes(). |
| 1038 | * |
| 1039 | * Returns 0 for success else error. |
| 1040 | */ |
| 1041 | int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, |
| 1042 | const char *control, const char *source) |
| 1043 | { |
| 1044 | return snd_soc_dapm_add_route(codec, sink, control, source); |
| 1045 | } |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1046 | EXPORT_SYMBOL_GPL(snd_soc_dapm_connect_input); |
| 1047 | |
| 1048 | /** |
Mark Brown | 105f1c2 | 2008-05-13 14:52:19 +0200 | [diff] [blame] | 1049 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets |
| 1050 | * @codec: codec |
| 1051 | * @route: audio routes |
| 1052 | * @num: number of routes |
| 1053 | * |
| 1054 | * Connects 2 dapm widgets together via a named audio path. The sink is |
| 1055 | * the widget receiving the audio signal, whilst the source is the sender |
| 1056 | * of the audio signal. |
| 1057 | * |
| 1058 | * Returns 0 for success else error. On error all resources can be freed |
| 1059 | * with a call to snd_soc_card_free(). |
| 1060 | */ |
| 1061 | int snd_soc_dapm_add_routes(struct snd_soc_codec *codec, |
| 1062 | const struct snd_soc_dapm_route *route, int num) |
| 1063 | { |
| 1064 | int i, ret; |
| 1065 | |
| 1066 | for (i = 0; i < num; i++) { |
| 1067 | ret = snd_soc_dapm_add_route(codec, route->sink, |
| 1068 | route->control, route->source); |
| 1069 | if (ret < 0) { |
| 1070 | printk(KERN_ERR "Failed to add route %s->%s\n", |
| 1071 | route->source, |
| 1072 | route->sink); |
| 1073 | return ret; |
| 1074 | } |
| 1075 | route++; |
| 1076 | } |
| 1077 | |
| 1078 | return 0; |
| 1079 | } |
| 1080 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); |
| 1081 | |
| 1082 | /** |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1083 | * snd_soc_dapm_new_widgets - add new dapm widgets |
| 1084 | * @codec: audio codec |
| 1085 | * |
| 1086 | * Checks the codec for any new dapm widgets and creates them if found. |
| 1087 | * |
| 1088 | * Returns 0 for success. |
| 1089 | */ |
| 1090 | int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) |
| 1091 | { |
| 1092 | struct snd_soc_dapm_widget *w; |
| 1093 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1094 | list_for_each_entry(w, &codec->dapm_widgets, list) |
| 1095 | { |
| 1096 | if (w->new) |
| 1097 | continue; |
| 1098 | |
| 1099 | switch(w->id) { |
| 1100 | case snd_soc_dapm_switch: |
| 1101 | case snd_soc_dapm_mixer: |
| 1102 | dapm_new_mixer(codec, w); |
| 1103 | break; |
| 1104 | case snd_soc_dapm_mux: |
| 1105 | dapm_new_mux(codec, w); |
| 1106 | break; |
| 1107 | case snd_soc_dapm_adc: |
| 1108 | case snd_soc_dapm_dac: |
| 1109 | case snd_soc_dapm_pga: |
| 1110 | dapm_new_pga(codec, w); |
| 1111 | break; |
| 1112 | case snd_soc_dapm_input: |
| 1113 | case snd_soc_dapm_output: |
| 1114 | case snd_soc_dapm_micbias: |
| 1115 | case snd_soc_dapm_spk: |
| 1116 | case snd_soc_dapm_hp: |
| 1117 | case snd_soc_dapm_mic: |
| 1118 | case snd_soc_dapm_line: |
| 1119 | case snd_soc_dapm_vmid: |
| 1120 | case snd_soc_dapm_pre: |
| 1121 | case snd_soc_dapm_post: |
| 1122 | break; |
| 1123 | } |
| 1124 | w->new = 1; |
| 1125 | } |
| 1126 | |
| 1127 | dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1128 | return 0; |
| 1129 | } |
| 1130 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); |
| 1131 | |
| 1132 | /** |
| 1133 | * snd_soc_dapm_get_volsw - dapm mixer get callback |
| 1134 | * @kcontrol: mixer control |
| 1135 | * @uinfo: control element information |
| 1136 | * |
| 1137 | * Callback to get the value of a dapm mixer control. |
| 1138 | * |
| 1139 | * Returns 0 for success. |
| 1140 | */ |
| 1141 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, |
| 1142 | struct snd_ctl_elem_value *ucontrol) |
| 1143 | { |
| 1144 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); |
| 1145 | int reg = kcontrol->private_value & 0xff; |
| 1146 | int shift = (kcontrol->private_value >> 8) & 0x0f; |
| 1147 | int rshift = (kcontrol->private_value >> 12) & 0x0f; |
Philipp Zabel | a7a4ac8 | 2008-01-10 14:37:42 +0100 | [diff] [blame] | 1148 | int max = (kcontrol->private_value >> 16) & 0xff; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1149 | int invert = (kcontrol->private_value >> 24) & 0x01; |
Philipp Zabel | a7a4ac8 | 2008-01-10 14:37:42 +0100 | [diff] [blame] | 1150 | int mask = (1 << fls(max)) - 1; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1151 | |
| 1152 | /* return the saved value if we are powered down */ |
| 1153 | if (widget->id == snd_soc_dapm_pga && !widget->power) { |
| 1154 | ucontrol->value.integer.value[0] = widget->saved_value; |
| 1155 | return 0; |
| 1156 | } |
| 1157 | |
| 1158 | ucontrol->value.integer.value[0] = |
| 1159 | (snd_soc_read(widget->codec, reg) >> shift) & mask; |
| 1160 | if (shift != rshift) |
| 1161 | ucontrol->value.integer.value[1] = |
| 1162 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; |
| 1163 | if (invert) { |
| 1164 | ucontrol->value.integer.value[0] = |
Philipp Zabel | a7a4ac8 | 2008-01-10 14:37:42 +0100 | [diff] [blame] | 1165 | max - ucontrol->value.integer.value[0]; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1166 | if (shift != rshift) |
| 1167 | ucontrol->value.integer.value[1] = |
Philipp Zabel | a7a4ac8 | 2008-01-10 14:37:42 +0100 | [diff] [blame] | 1168 | max - ucontrol->value.integer.value[1]; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1169 | } |
| 1170 | |
| 1171 | return 0; |
| 1172 | } |
| 1173 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); |
| 1174 | |
| 1175 | /** |
| 1176 | * snd_soc_dapm_put_volsw - dapm mixer set callback |
| 1177 | * @kcontrol: mixer control |
| 1178 | * @uinfo: control element information |
| 1179 | * |
| 1180 | * Callback to set the value of a dapm mixer control. |
| 1181 | * |
| 1182 | * Returns 0 for success. |
| 1183 | */ |
| 1184 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, |
| 1185 | struct snd_ctl_elem_value *ucontrol) |
| 1186 | { |
| 1187 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); |
| 1188 | int reg = kcontrol->private_value & 0xff; |
| 1189 | int shift = (kcontrol->private_value >> 8) & 0x0f; |
| 1190 | int rshift = (kcontrol->private_value >> 12) & 0x0f; |
Philipp Zabel | a7a4ac8 | 2008-01-10 14:37:42 +0100 | [diff] [blame] | 1191 | int max = (kcontrol->private_value >> 16) & 0xff; |
| 1192 | int mask = (1 << fls(max)) - 1; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1193 | int invert = (kcontrol->private_value >> 24) & 0x01; |
| 1194 | unsigned short val, val2, val_mask; |
| 1195 | int ret; |
| 1196 | |
| 1197 | val = (ucontrol->value.integer.value[0] & mask); |
| 1198 | |
| 1199 | if (invert) |
Philipp Zabel | a7a4ac8 | 2008-01-10 14:37:42 +0100 | [diff] [blame] | 1200 | val = max - val; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1201 | val_mask = mask << shift; |
| 1202 | val = val << shift; |
| 1203 | if (shift != rshift) { |
| 1204 | val2 = (ucontrol->value.integer.value[1] & mask); |
| 1205 | if (invert) |
Philipp Zabel | a7a4ac8 | 2008-01-10 14:37:42 +0100 | [diff] [blame] | 1206 | val2 = max - val2; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1207 | val_mask |= mask << rshift; |
| 1208 | val |= val2 << rshift; |
| 1209 | } |
| 1210 | |
| 1211 | mutex_lock(&widget->codec->mutex); |
| 1212 | widget->value = val; |
| 1213 | |
| 1214 | /* save volume value if the widget is powered down */ |
| 1215 | if (widget->id == snd_soc_dapm_pga && !widget->power) { |
| 1216 | widget->saved_value = val; |
| 1217 | mutex_unlock(&widget->codec->mutex); |
| 1218 | return 1; |
| 1219 | } |
| 1220 | |
| 1221 | dapm_mixer_update_power(widget, kcontrol, reg, val_mask, val, invert); |
| 1222 | if (widget->event) { |
| 1223 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 1224 | ret = widget->event(widget, kcontrol, |
| 1225 | SND_SOC_DAPM_PRE_REG); |
| 1226 | if (ret < 0) { |
| 1227 | ret = 1; |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1228 | goto out; |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 1229 | } |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1230 | } |
| 1231 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); |
| 1232 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 1233 | ret = widget->event(widget, kcontrol, |
| 1234 | SND_SOC_DAPM_POST_REG); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1235 | } else |
| 1236 | ret = snd_soc_update_bits(widget->codec, reg, val_mask, val); |
| 1237 | |
| 1238 | out: |
| 1239 | mutex_unlock(&widget->codec->mutex); |
| 1240 | return ret; |
| 1241 | } |
| 1242 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); |
| 1243 | |
| 1244 | /** |
| 1245 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback |
| 1246 | * @kcontrol: mixer control |
| 1247 | * @uinfo: control element information |
| 1248 | * |
| 1249 | * Callback to get the value of a dapm enumerated double mixer control. |
| 1250 | * |
| 1251 | * Returns 0 for success. |
| 1252 | */ |
| 1253 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, |
| 1254 | struct snd_ctl_elem_value *ucontrol) |
| 1255 | { |
| 1256 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); |
| 1257 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 1258 | unsigned short val, bitmask; |
| 1259 | |
| 1260 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) |
| 1261 | ; |
| 1262 | val = snd_soc_read(widget->codec, e->reg); |
| 1263 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); |
| 1264 | if (e->shift_l != e->shift_r) |
| 1265 | ucontrol->value.enumerated.item[1] = |
| 1266 | (val >> e->shift_r) & (bitmask - 1); |
| 1267 | |
| 1268 | return 0; |
| 1269 | } |
| 1270 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); |
| 1271 | |
| 1272 | /** |
| 1273 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback |
| 1274 | * @kcontrol: mixer control |
| 1275 | * @uinfo: control element information |
| 1276 | * |
| 1277 | * Callback to set the value of a dapm enumerated double mixer control. |
| 1278 | * |
| 1279 | * Returns 0 for success. |
| 1280 | */ |
| 1281 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, |
| 1282 | struct snd_ctl_elem_value *ucontrol) |
| 1283 | { |
| 1284 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); |
| 1285 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 1286 | unsigned short val, mux; |
| 1287 | unsigned short mask, bitmask; |
| 1288 | int ret = 0; |
| 1289 | |
| 1290 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) |
| 1291 | ; |
| 1292 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) |
| 1293 | return -EINVAL; |
| 1294 | mux = ucontrol->value.enumerated.item[0]; |
| 1295 | val = mux << e->shift_l; |
| 1296 | mask = (bitmask - 1) << e->shift_l; |
| 1297 | if (e->shift_l != e->shift_r) { |
| 1298 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) |
| 1299 | return -EINVAL; |
| 1300 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; |
| 1301 | mask |= (bitmask - 1) << e->shift_r; |
| 1302 | } |
| 1303 | |
| 1304 | mutex_lock(&widget->codec->mutex); |
| 1305 | widget->value = val; |
| 1306 | dapm_mux_update_power(widget, kcontrol, mask, mux, e); |
| 1307 | if (widget->event) { |
| 1308 | if (widget->event_flags & SND_SOC_DAPM_PRE_REG) { |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 1309 | ret = widget->event(widget, |
| 1310 | kcontrol, SND_SOC_DAPM_PRE_REG); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1311 | if (ret < 0) |
| 1312 | goto out; |
| 1313 | } |
| 1314 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); |
| 1315 | if (widget->event_flags & SND_SOC_DAPM_POST_REG) |
Laim Girdwood | 9af6d95 | 2008-01-10 14:41:02 +0100 | [diff] [blame] | 1316 | ret = widget->event(widget, |
| 1317 | kcontrol, SND_SOC_DAPM_POST_REG); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1318 | } else |
| 1319 | ret = snd_soc_update_bits(widget->codec, e->reg, mask, val); |
| 1320 | |
| 1321 | out: |
| 1322 | mutex_unlock(&widget->codec->mutex); |
| 1323 | return ret; |
| 1324 | } |
| 1325 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); |
| 1326 | |
| 1327 | /** |
| 1328 | * snd_soc_dapm_new_control - create new dapm control |
| 1329 | * @codec: audio codec |
| 1330 | * @widget: widget template |
| 1331 | * |
| 1332 | * Creates a new dapm control based upon the template. |
| 1333 | * |
| 1334 | * Returns 0 for success else error. |
| 1335 | */ |
| 1336 | int snd_soc_dapm_new_control(struct snd_soc_codec *codec, |
| 1337 | const struct snd_soc_dapm_widget *widget) |
| 1338 | { |
| 1339 | struct snd_soc_dapm_widget *w; |
| 1340 | |
| 1341 | if ((w = dapm_cnew_widget(widget)) == NULL) |
| 1342 | return -ENOMEM; |
| 1343 | |
| 1344 | w->codec = codec; |
| 1345 | INIT_LIST_HEAD(&w->sources); |
| 1346 | INIT_LIST_HEAD(&w->sinks); |
| 1347 | INIT_LIST_HEAD(&w->list); |
| 1348 | list_add(&w->list, &codec->dapm_widgets); |
| 1349 | |
| 1350 | /* machine layer set ups unconnected pins and insertions */ |
| 1351 | w->connected = 1; |
| 1352 | return 0; |
| 1353 | } |
| 1354 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); |
| 1355 | |
| 1356 | /** |
Mark Brown | 4ba1327 | 2008-05-13 14:51:19 +0200 | [diff] [blame] | 1357 | * snd_soc_dapm_new_controls - create new dapm controls |
| 1358 | * @codec: audio codec |
| 1359 | * @widget: widget array |
| 1360 | * @num: number of widgets |
| 1361 | * |
| 1362 | * Creates new DAPM controls based upon the templates. |
| 1363 | * |
| 1364 | * Returns 0 for success else error. |
| 1365 | */ |
| 1366 | int snd_soc_dapm_new_controls(struct snd_soc_codec *codec, |
| 1367 | const struct snd_soc_dapm_widget *widget, |
| 1368 | int num) |
| 1369 | { |
| 1370 | int i, ret; |
| 1371 | |
| 1372 | for (i = 0; i < num; i++) { |
| 1373 | ret = snd_soc_dapm_new_control(codec, widget); |
| 1374 | if (ret < 0) |
| 1375 | return ret; |
| 1376 | widget++; |
| 1377 | } |
| 1378 | return 0; |
| 1379 | } |
| 1380 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); |
| 1381 | |
| 1382 | |
| 1383 | /** |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1384 | * snd_soc_dapm_stream_event - send a stream event to the dapm core |
| 1385 | * @codec: audio codec |
| 1386 | * @stream: stream name |
| 1387 | * @event: stream event |
| 1388 | * |
| 1389 | * Sends a stream event to the dapm core. The core then makes any |
| 1390 | * necessary widget power changes. |
| 1391 | * |
| 1392 | * Returns 0 for success else error. |
| 1393 | */ |
| 1394 | int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, |
| 1395 | char *stream, int event) |
| 1396 | { |
| 1397 | struct snd_soc_dapm_widget *w; |
| 1398 | |
Seth Forshee | 11da21a | 2007-02-02 17:14:19 +0100 | [diff] [blame] | 1399 | if (stream == NULL) |
| 1400 | return 0; |
| 1401 | |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1402 | mutex_lock(&codec->mutex); |
| 1403 | list_for_each_entry(w, &codec->dapm_widgets, list) |
| 1404 | { |
| 1405 | if (!w->sname) |
| 1406 | continue; |
Mark Brown | c1286b8 | 2008-07-07 19:26:03 +0100 | [diff] [blame] | 1407 | pr_debug("widget %s\n %s stream %s event %d\n", |
| 1408 | w->name, w->sname, stream, event); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1409 | if (strstr(w->sname, stream)) { |
| 1410 | switch(event) { |
| 1411 | case SND_SOC_DAPM_STREAM_START: |
| 1412 | w->active = 1; |
| 1413 | break; |
| 1414 | case SND_SOC_DAPM_STREAM_STOP: |
| 1415 | w->active = 0; |
| 1416 | break; |
| 1417 | case SND_SOC_DAPM_STREAM_SUSPEND: |
| 1418 | if (w->active) |
| 1419 | w->suspend = 1; |
| 1420 | w->active = 0; |
| 1421 | break; |
| 1422 | case SND_SOC_DAPM_STREAM_RESUME: |
| 1423 | if (w->suspend) { |
| 1424 | w->active = 1; |
| 1425 | w->suspend = 0; |
| 1426 | } |
| 1427 | break; |
| 1428 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
| 1429 | break; |
| 1430 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
| 1431 | break; |
| 1432 | } |
| 1433 | } |
| 1434 | } |
| 1435 | mutex_unlock(&codec->mutex); |
| 1436 | |
| 1437 | dapm_power_widgets(codec, event); |
Harvey Harrison | 9bf8e7d | 2008-03-03 15:32:18 -0800 | [diff] [blame] | 1438 | dump_dapm(codec, __func__); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1439 | return 0; |
| 1440 | } |
| 1441 | EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); |
| 1442 | |
| 1443 | /** |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 1444 | * snd_soc_dapm_set_bias_level - set the bias level for the system |
Liam Girdwood | 0b4d221 | 2008-01-10 14:36:20 +0100 | [diff] [blame] | 1445 | * @socdev: audio device |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 1446 | * @level: level to configure |
Liam Girdwood | 0b4d221 | 2008-01-10 14:36:20 +0100 | [diff] [blame] | 1447 | * |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 1448 | * Configure the bias (power) levels for the SoC audio device. |
Liam Girdwood | 0b4d221 | 2008-01-10 14:36:20 +0100 | [diff] [blame] | 1449 | * |
| 1450 | * Returns 0 for success else error. |
| 1451 | */ |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 1452 | int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev, |
| 1453 | enum snd_soc_bias_level level) |
Liam Girdwood | 0b4d221 | 2008-01-10 14:36:20 +0100 | [diff] [blame] | 1454 | { |
| 1455 | struct snd_soc_codec *codec = socdev->codec; |
| 1456 | struct snd_soc_machine *machine = socdev->machine; |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 1457 | int ret = 0; |
Liam Girdwood | 0b4d221 | 2008-01-10 14:36:20 +0100 | [diff] [blame] | 1458 | |
Mark Brown | 0be9898 | 2008-05-19 12:31:28 +0200 | [diff] [blame] | 1459 | if (machine->set_bias_level) |
| 1460 | ret = machine->set_bias_level(machine, level); |
| 1461 | if (ret == 0 && codec->set_bias_level) |
| 1462 | ret = codec->set_bias_level(codec, level); |
| 1463 | |
| 1464 | return ret; |
Liam Girdwood | 0b4d221 | 2008-01-10 14:36:20 +0100 | [diff] [blame] | 1465 | } |
Liam Girdwood | 0b4d221 | 2008-01-10 14:36:20 +0100 | [diff] [blame] | 1466 | |
| 1467 | /** |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1468 | * snd_soc_dapm_enable_pin - enable pin. |
| 1469 | * @snd_soc_codec: SoC codec |
| 1470 | * @pin: pin name |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1471 | * |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1472 | * Enables input/output pin and it's parents or children widgets iff there is |
| 1473 | * a valid audio route and active audio stream. |
| 1474 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 1475 | * do any widget power switching. |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1476 | */ |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1477 | int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, char *pin) |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1478 | { |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1479 | return snd_soc_dapm_set_pin(codec, pin, 1); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1480 | } |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1481 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1482 | |
| 1483 | /** |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1484 | * snd_soc_dapm_disable_pin - disable pin. |
| 1485 | * @codec: SoC codec |
| 1486 | * @pin: pin name |
Graeme Gregory | eeec12b | 2008-04-30 19:27:40 +0200 | [diff] [blame] | 1487 | * |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1488 | * Disables input/output pin and it's parents or children widgets. |
| 1489 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 1490 | * do any widget power switching. |
Graeme Gregory | eeec12b | 2008-04-30 19:27:40 +0200 | [diff] [blame] | 1491 | */ |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1492 | int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin) |
| 1493 | { |
| 1494 | return snd_soc_dapm_set_pin(codec, pin, 0); |
| 1495 | } |
| 1496 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
| 1497 | |
| 1498 | /** |
| 1499 | * snd_soc_dapm_get_pin_status - get audio pin status |
| 1500 | * @codec: audio codec |
| 1501 | * @pin: audio signal pin endpoint (or start point) |
| 1502 | * |
| 1503 | * Get audio pin status - connected or disconnected. |
| 1504 | * |
| 1505 | * Returns 1 for connected otherwise 0. |
| 1506 | */ |
| 1507 | int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, char *pin) |
Graeme Gregory | eeec12b | 2008-04-30 19:27:40 +0200 | [diff] [blame] | 1508 | { |
| 1509 | struct snd_soc_dapm_widget *w; |
| 1510 | |
| 1511 | list_for_each_entry(w, &codec->dapm_widgets, list) { |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1512 | if (!strcmp(w->name, pin)) |
Graeme Gregory | eeec12b | 2008-04-30 19:27:40 +0200 | [diff] [blame] | 1513 | return w->connected; |
| 1514 | } |
| 1515 | |
| 1516 | return 0; |
| 1517 | } |
Liam Girdwood | a530218 | 2008-07-07 13:35:17 +0100 | [diff] [blame] | 1518 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
Graeme Gregory | eeec12b | 2008-04-30 19:27:40 +0200 | [diff] [blame] | 1519 | |
| 1520 | /** |
Richard Purdie | 2b97eab | 2006-10-06 18:32:18 +0200 | [diff] [blame] | 1521 | * snd_soc_dapm_free - free dapm resources |
| 1522 | * @socdev: SoC device |
| 1523 | * |
| 1524 | * Free all dapm widgets and resources. |
| 1525 | */ |
| 1526 | void snd_soc_dapm_free(struct snd_soc_device *socdev) |
| 1527 | { |
| 1528 | struct snd_soc_codec *codec = socdev->codec; |
| 1529 | |
| 1530 | snd_soc_dapm_sys_remove(socdev->dev); |
| 1531 | dapm_free_widgets(codec); |
| 1532 | } |
| 1533 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); |
| 1534 | |
| 1535 | /* Module information */ |
| 1536 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); |
| 1537 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
| 1538 | MODULE_LICENSE("GPL"); |