1 /* 2 * ALSA SoC WM9090 driver 3 * 4 * Copyright 2009, 2010 Wolfson Microelectronics 5 * 6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * version 2 as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20 * 02110-1301 USA 21 */ 22 23 #include <linux/module.h> 24 #include <linux/errno.h> 25 #include <linux/device.h> 26 #include <linux/i2c.h> 27 #include <linux/delay.h> 28 #include <linux/slab.h> 29 #include <sound/initval.h> 30 #include <sound/soc.h> 31 #include <sound/soc-dapm.h> 32 #include <sound/tlv.h> 33 #include <sound/wm9090.h> 34 35 #include "wm9090.h" 36 37 static const u16 wm9090_reg_defaults[] = { 38 0x9093, /* R0 - Software Reset */ 39 0x0006, /* R1 - Power Management (1) */ 40 0x6000, /* R2 - Power Management (2) */ 41 0x0000, /* R3 - Power Management (3) */ 42 0x0000, /* R4 */ 43 0x0000, /* R5 */ 44 0x01C0, /* R6 - Clocking 1 */ 45 0x0000, /* R7 */ 46 0x0000, /* R8 */ 47 0x0000, /* R9 */ 48 0x0000, /* R10 */ 49 0x0000, /* R11 */ 50 0x0000, /* R12 */ 51 0x0000, /* R13 */ 52 0x0000, /* R14 */ 53 0x0000, /* R15 */ 54 0x0000, /* R16 */ 55 0x0000, /* R17 */ 56 0x0000, /* R18 */ 57 0x0000, /* R19 */ 58 0x0000, /* R20 */ 59 0x0000, /* R21 */ 60 0x0003, /* R22 - IN1 Line Control */ 61 0x0003, /* R23 - IN2 Line Control */ 62 0x0083, /* R24 - IN1 Line Input A Volume */ 63 0x0083, /* R25 - IN1 Line Input B Volume */ 64 0x0083, /* R26 - IN2 Line Input A Volume */ 65 0x0083, /* R27 - IN2 Line Input B Volume */ 66 0x002D, /* R28 - Left Output Volume */ 67 0x002D, /* R29 - Right Output Volume */ 68 0x0000, /* R30 */ 69 0x0000, /* R31 */ 70 0x0000, /* R32 */ 71 0x0000, /* R33 */ 72 0x0100, /* R34 - SPKMIXL Attenuation */ 73 0x0000, /* R35 */ 74 0x0010, /* R36 - SPKOUT Mixers */ 75 0x0140, /* R37 - ClassD3 */ 76 0x0039, /* R38 - Speaker Volume Left */ 77 0x0000, /* R39 */ 78 0x0000, /* R40 */ 79 0x0000, /* R41 */ 80 0x0000, /* R42 */ 81 0x0000, /* R43 */ 82 0x0000, /* R44 */ 83 0x0000, /* R45 - Output Mixer1 */ 84 0x0000, /* R46 - Output Mixer2 */ 85 0x0100, /* R47 - Output Mixer3 */ 86 0x0100, /* R48 - Output Mixer4 */ 87 0x0000, /* R49 */ 88 0x0000, /* R50 */ 89 0x0000, /* R51 */ 90 0x0000, /* R52 */ 91 0x0000, /* R53 */ 92 0x0000, /* R54 - Speaker Mixer */ 93 0x0000, /* R55 */ 94 0x0000, /* R56 */ 95 0x000D, /* R57 - AntiPOP2 */ 96 0x0000, /* R58 */ 97 0x0000, /* R59 */ 98 0x0000, /* R60 */ 99 0x0000, /* R61 */ 100 0x0000, /* R62 */ 101 0x0000, /* R63 */ 102 0x0000, /* R64 */ 103 0x0000, /* R65 */ 104 0x0000, /* R66 */ 105 0x0000, /* R67 */ 106 0x0000, /* R68 */ 107 0x0000, /* R69 */ 108 0x0000, /* R70 - Write Sequencer 0 */ 109 0x0000, /* R71 - Write Sequencer 1 */ 110 0x0000, /* R72 - Write Sequencer 2 */ 111 0x0000, /* R73 - Write Sequencer 3 */ 112 0x0000, /* R74 - Write Sequencer 4 */ 113 0x0000, /* R75 - Write Sequencer 5 */ 114 0x1F25, /* R76 - Charge Pump 1 */ 115 0x0000, /* R77 */ 116 0x0000, /* R78 */ 117 0x0000, /* R79 */ 118 0x0000, /* R80 */ 119 0x0000, /* R81 */ 120 0x0000, /* R82 */ 121 0x0000, /* R83 */ 122 0x0000, /* R84 - DC Servo 0 */ 123 0x054A, /* R85 - DC Servo 1 */ 124 0x0000, /* R86 */ 125 0x0000, /* R87 - DC Servo 3 */ 126 0x0000, /* R88 - DC Servo Readback 0 */ 127 0x0000, /* R89 - DC Servo Readback 1 */ 128 0x0000, /* R90 - DC Servo Readback 2 */ 129 0x0000, /* R91 */ 130 0x0000, /* R92 */ 131 0x0000, /* R93 */ 132 0x0000, /* R94 */ 133 0x0000, /* R95 */ 134 0x0100, /* R96 - Analogue HP 0 */ 135 0x0000, /* R97 */ 136 0x8640, /* R98 - AGC Control 0 */ 137 0xC000, /* R99 - AGC Control 1 */ 138 0x0200, /* R100 - AGC Control 2 */ 139 }; 140 141 /* This struct is used to save the context */ 142 struct wm9090_priv { 143 struct mutex mutex; 144 struct wm9090_platform_data pdata; 145 void *control_data; 146 }; 147 148 static int wm9090_volatile(unsigned int reg) 149 { 150 switch (reg) { 151 case WM9090_SOFTWARE_RESET: 152 case WM9090_DC_SERVO_0: 153 case WM9090_DC_SERVO_READBACK_0: 154 case WM9090_DC_SERVO_READBACK_1: 155 case WM9090_DC_SERVO_READBACK_2: 156 return 1; 157 158 default: 159 return 0; 160 } 161 } 162 163 static void wait_for_dc_servo(struct snd_soc_codec *codec) 164 { 165 unsigned int reg; 166 int count = 0; 167 168 dev_dbg(codec->dev, "Waiting for DC servo...\n"); 169 do { 170 count++; 171 msleep(1); 172 reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0); 173 dev_dbg(codec->dev, "DC servo status: %x\n", reg); 174 } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK) 175 != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000); 176 177 if ((reg & WM9090_DCS_CAL_COMPLETE_MASK) 178 != WM9090_DCS_CAL_COMPLETE_MASK) 179 dev_err(codec->dev, "Timed out waiting for DC Servo\n"); 180 } 181 182 static const unsigned int in_tlv[] = { 183 TLV_DB_RANGE_HEAD(6), 184 0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0), 185 1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0), 186 4, 6, TLV_DB_SCALE_ITEM(600, 600, 0), 187 }; 188 static const unsigned int mix_tlv[] = { 189 TLV_DB_RANGE_HEAD(4), 190 0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0), 191 3, 3, TLV_DB_SCALE_ITEM(0, 0, 0), 192 }; 193 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0); 194 static const unsigned int spkboost_tlv[] = { 195 TLV_DB_RANGE_HEAD(7), 196 0, 6, TLV_DB_SCALE_ITEM(0, 150, 0), 197 7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0), 198 }; 199 200 static const struct snd_kcontrol_new wm9090_controls[] = { 201 SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0, 202 in_tlv), 203 SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1), 204 SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0), 205 206 SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0, 207 in_tlv), 208 SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1), 209 SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0), 210 211 SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1), 212 SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1, 213 mix_tlv), 214 SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1, 215 mix_tlv), 216 217 SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1), 218 SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1, 219 mix_tlv), 220 SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1, 221 mix_tlv), 222 223 SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1), 224 SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1, 225 mix_tlv), 226 SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1, 227 mix_tlv), 228 229 SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME, 230 WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv), 231 SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME, 232 WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1), 233 SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME, 234 WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0), 235 236 SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0, 237 out_tlv), 238 SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1), 239 SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0), 240 SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv), 241 }; 242 243 static const struct snd_kcontrol_new wm9090_in1_se_controls[] = { 244 SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0, 245 in_tlv), 246 SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1), 247 SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0), 248 249 SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1, 250 mix_tlv), 251 SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1, 252 mix_tlv), 253 SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1, 254 mix_tlv), 255 }; 256 257 static const struct snd_kcontrol_new wm9090_in2_se_controls[] = { 258 SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0, 259 in_tlv), 260 SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1), 261 SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0), 262 263 SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1, 264 mix_tlv), 265 SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1, 266 mix_tlv), 267 SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1, 268 mix_tlv), 269 }; 270 271 static int hp_ev(struct snd_soc_dapm_widget *w, 272 struct snd_kcontrol *kcontrol, int event) 273 { 274 struct snd_soc_codec *codec = w->codec; 275 unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0); 276 277 switch (event) { 278 case SND_SOC_DAPM_POST_PMU: 279 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1, 280 WM9090_CP_ENA, WM9090_CP_ENA); 281 282 msleep(5); 283 284 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, 285 WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA, 286 WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA); 287 288 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY; 289 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg); 290 291 /* Start the DC servo. We don't currently use the 292 * ability to save the state since we don't have full 293 * control of the analogue paths and they can change 294 * DC offsets; see the WM8904 driver for an example of 295 * doing so. 296 */ 297 snd_soc_write(codec, WM9090_DC_SERVO_0, 298 WM9090_DCS_ENA_CHAN_0 | 299 WM9090_DCS_ENA_CHAN_1 | 300 WM9090_DCS_TRIG_STARTUP_1 | 301 WM9090_DCS_TRIG_STARTUP_0); 302 wait_for_dc_servo(codec); 303 304 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT | 305 WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT; 306 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg); 307 break; 308 309 case SND_SOC_DAPM_PRE_PMD: 310 reg &= ~(WM9090_HPOUT1L_RMV_SHORT | 311 WM9090_HPOUT1L_DLY | 312 WM9090_HPOUT1L_OUTP | 313 WM9090_HPOUT1R_RMV_SHORT | 314 WM9090_HPOUT1R_DLY | 315 WM9090_HPOUT1R_OUTP); 316 317 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg); 318 319 snd_soc_write(codec, WM9090_DC_SERVO_0, 0); 320 321 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, 322 WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA, 323 0); 324 325 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1, 326 WM9090_CP_ENA, 0); 327 break; 328 } 329 330 return 0; 331 } 332 333 static const struct snd_kcontrol_new spkmix[] = { 334 SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0), 335 SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0), 336 SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0), 337 SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0), 338 }; 339 340 static const struct snd_kcontrol_new spkout[] = { 341 SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0), 342 }; 343 344 static const struct snd_kcontrol_new mixoutl[] = { 345 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0), 346 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0), 347 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0), 348 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0), 349 }; 350 351 static const struct snd_kcontrol_new mixoutr[] = { 352 SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0), 353 SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0), 354 SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0), 355 SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0), 356 }; 357 358 static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = { 359 SND_SOC_DAPM_INPUT("IN1+"), 360 SND_SOC_DAPM_INPUT("IN1-"), 361 SND_SOC_DAPM_INPUT("IN2+"), 362 SND_SOC_DAPM_INPUT("IN2-"), 363 364 SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0), 365 366 SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0), 367 SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0), 368 SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0), 369 SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0), 370 371 SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0, 372 spkmix, ARRAY_SIZE(spkmix)), 373 SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0, 374 mixoutl, ARRAY_SIZE(mixoutl)), 375 SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0, 376 mixoutr, ARRAY_SIZE(mixoutr)), 377 378 SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0, 379 hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 380 381 SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0), 382 SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0, 383 spkout, ARRAY_SIZE(spkout)), 384 385 SND_SOC_DAPM_OUTPUT("HPR"), 386 SND_SOC_DAPM_OUTPUT("HPL"), 387 SND_SOC_DAPM_OUTPUT("Speaker"), 388 }; 389 390 static const struct snd_soc_dapm_route audio_map[] = { 391 { "IN1A PGA", NULL, "IN1+" }, 392 { "IN2A PGA", NULL, "IN2+" }, 393 394 { "SPKMIX", "IN1A Switch", "IN1A PGA" }, 395 { "SPKMIX", "IN2A Switch", "IN2A PGA" }, 396 397 { "MIXOUTL", "IN1A Switch", "IN1A PGA" }, 398 { "MIXOUTL", "IN2A Switch", "IN2A PGA" }, 399 400 { "MIXOUTR", "IN1A Switch", "IN1A PGA" }, 401 { "MIXOUTR", "IN2A Switch", "IN2A PGA" }, 402 403 { "HP PGA", NULL, "OSC" }, 404 { "HP PGA", NULL, "MIXOUTL" }, 405 { "HP PGA", NULL, "MIXOUTR" }, 406 407 { "HPL", NULL, "HP PGA" }, 408 { "HPR", NULL, "HP PGA" }, 409 410 { "SPKPGA", NULL, "OSC" }, 411 { "SPKPGA", NULL, "SPKMIX" }, 412 413 { "SPKOUT", "Mixer Switch", "SPKPGA" }, 414 415 { "Speaker", NULL, "SPKOUT" }, 416 }; 417 418 static const struct snd_soc_dapm_route audio_map_in1_se[] = { 419 { "IN1B PGA", NULL, "IN1-" }, 420 421 { "SPKMIX", "IN1B Switch", "IN1B PGA" }, 422 { "MIXOUTL", "IN1B Switch", "IN1B PGA" }, 423 { "MIXOUTR", "IN1B Switch", "IN1B PGA" }, 424 }; 425 426 static const struct snd_soc_dapm_route audio_map_in1_diff[] = { 427 { "IN1A PGA", NULL, "IN1-" }, 428 }; 429 430 static const struct snd_soc_dapm_route audio_map_in2_se[] = { 431 { "IN2B PGA", NULL, "IN2-" }, 432 433 { "SPKMIX", "IN2B Switch", "IN2B PGA" }, 434 { "MIXOUTL", "IN2B Switch", "IN2B PGA" }, 435 { "MIXOUTR", "IN2B Switch", "IN2B PGA" }, 436 }; 437 438 static const struct snd_soc_dapm_route audio_map_in2_diff[] = { 439 { "IN2A PGA", NULL, "IN2-" }, 440 }; 441 442 static int wm9090_add_controls(struct snd_soc_codec *codec) 443 { 444 struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec); 445 int i; 446 447 snd_soc_dapm_new_controls(codec, wm9090_dapm_widgets, 448 ARRAY_SIZE(wm9090_dapm_widgets)); 449 450 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 451 452 snd_soc_add_controls(codec, wm9090_controls, 453 ARRAY_SIZE(wm9090_controls)); 454 455 if (wm9090->pdata.lin1_diff) { 456 snd_soc_dapm_add_routes(codec, audio_map_in1_diff, 457 ARRAY_SIZE(audio_map_in1_diff)); 458 } else { 459 snd_soc_dapm_add_routes(codec, audio_map_in1_se, 460 ARRAY_SIZE(audio_map_in1_se)); 461 snd_soc_add_controls(codec, wm9090_in1_se_controls, 462 ARRAY_SIZE(wm9090_in1_se_controls)); 463 } 464 465 if (wm9090->pdata.lin2_diff) { 466 snd_soc_dapm_add_routes(codec, audio_map_in2_diff, 467 ARRAY_SIZE(audio_map_in2_diff)); 468 } else { 469 snd_soc_dapm_add_routes(codec, audio_map_in2_se, 470 ARRAY_SIZE(audio_map_in2_se)); 471 snd_soc_add_controls(codec, wm9090_in2_se_controls, 472 ARRAY_SIZE(wm9090_in2_se_controls)); 473 } 474 475 if (wm9090->pdata.agc_ena) { 476 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++) 477 snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i, 478 wm9090->pdata.agc[i]); 479 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3, 480 WM9090_AGC_ENA, WM9090_AGC_ENA); 481 } else { 482 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3, 483 WM9090_AGC_ENA, 0); 484 } 485 486 return 0; 487 488 } 489 490 /* 491 * The machine driver should call this from their set_bias_level; if there 492 * isn't one then this can just be set as the set_bias_level function. 493 */ 494 static int wm9090_set_bias_level(struct snd_soc_codec *codec, 495 enum snd_soc_bias_level level) 496 { 497 u16 *reg_cache = codec->reg_cache; 498 int i, ret; 499 500 switch (level) { 501 case SND_SOC_BIAS_ON: 502 break; 503 504 case SND_SOC_BIAS_PREPARE: 505 snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA, 506 WM9090_VMID_ENA); 507 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, 508 WM9090_BIAS_ENA | 509 WM9090_VMID_RES_MASK, 510 WM9090_BIAS_ENA | 511 1 << WM9090_VMID_RES_SHIFT); 512 msleep(1); /* Probably an overestimate */ 513 break; 514 515 case SND_SOC_BIAS_STANDBY: 516 if (codec->bias_level == SND_SOC_BIAS_OFF) { 517 /* Restore the register cache */ 518 for (i = 1; i < codec->driver->reg_cache_size; i++) { 519 if (reg_cache[i] == wm9090_reg_defaults[i]) 520 continue; 521 if (wm9090_volatile(i)) 522 continue; 523 524 ret = snd_soc_write(codec, i, reg_cache[i]); 525 if (ret != 0) 526 dev_warn(codec->dev, 527 "Failed to restore register %d: %d\n", 528 i, ret); 529 } 530 } 531 532 /* We keep VMID off during standby since the combination of 533 * ground referenced outputs and class D speaker mean that 534 * latency is not an issue. 535 */ 536 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1, 537 WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0); 538 snd_soc_update_bits(codec, WM9090_ANTIPOP2, 539 WM9090_VMID_ENA, 0); 540 break; 541 542 case SND_SOC_BIAS_OFF: 543 break; 544 } 545 546 codec->bias_level = level; 547 548 return 0; 549 } 550 551 static int wm9090_probe(struct snd_soc_codec *codec) 552 { 553 struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec); 554 u16 *reg_cache = codec->reg_cache; 555 int ret; 556 557 codec->control_data = wm9090->control_data; 558 ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C); 559 if (ret != 0) { 560 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 561 return ret; 562 } 563 564 ret = snd_soc_read(codec, WM9090_SOFTWARE_RESET); 565 if (ret < 0) 566 return ret; 567 if (ret != wm9090_reg_defaults[WM9090_SOFTWARE_RESET]) { 568 dev_err(codec->dev, "Device is not a WM9090, ID=%x\n", ret); 569 return -EINVAL; 570 } 571 572 ret = snd_soc_write(codec, WM9090_SOFTWARE_RESET, 0); 573 if (ret < 0) 574 return ret; 575 576 /* Configure some defaults; they will be written out when we 577 * bring the bias up. 578 */ 579 reg_cache[WM9090_IN1_LINE_INPUT_A_VOLUME] |= WM9090_IN1_VU 580 | WM9090_IN1A_ZC; 581 reg_cache[WM9090_IN1_LINE_INPUT_B_VOLUME] |= WM9090_IN1_VU 582 | WM9090_IN1B_ZC; 583 reg_cache[WM9090_IN2_LINE_INPUT_A_VOLUME] |= WM9090_IN2_VU 584 | WM9090_IN2A_ZC; 585 reg_cache[WM9090_IN2_LINE_INPUT_B_VOLUME] |= WM9090_IN2_VU 586 | WM9090_IN2B_ZC; 587 reg_cache[WM9090_SPEAKER_VOLUME_LEFT] |= 588 WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC; 589 reg_cache[WM9090_LEFT_OUTPUT_VOLUME] |= 590 WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC; 591 reg_cache[WM9090_RIGHT_OUTPUT_VOLUME] |= 592 WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC; 593 594 reg_cache[WM9090_CLOCKING_1] |= WM9090_TOCLK_ENA; 595 596 wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 597 598 wm9090_add_controls(codec); 599 600 return 0; 601 } 602 603 #ifdef CONFIG_PM 604 static int wm9090_suspend(struct snd_soc_codec *codec, pm_message_t state) 605 { 606 wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF); 607 608 return 0; 609 } 610 611 static int wm9090_resume(struct snd_soc_codec *codec) 612 { 613 wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 614 615 return 0; 616 } 617 #else 618 #define wm9090_suspend NULL 619 #define wm9090_resume NULL 620 #endif 621 622 static int wm9090_remove(struct snd_soc_codec *codec) 623 { 624 wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF); 625 626 return 0; 627 } 628 629 static struct snd_soc_codec_driver soc_codec_dev_wm9090 = { 630 .probe = wm9090_probe, 631 .remove = wm9090_remove, 632 .suspend = wm9090_suspend, 633 .resume = wm9090_resume, 634 .set_bias_level = wm9090_set_bias_level, 635 .reg_cache_size = (WM9090_MAX_REGISTER + 1), 636 .reg_word_size = sizeof(u16), 637 .reg_cache_default = wm9090_reg_defaults, 638 .volatile_register = wm9090_volatile, 639 }; 640 641 static int wm9090_i2c_probe(struct i2c_client *i2c, 642 const struct i2c_device_id *id) 643 { 644 struct wm9090_priv *wm9090; 645 int ret; 646 647 wm9090 = kzalloc(sizeof(*wm9090), GFP_KERNEL); 648 if (wm9090 == NULL) { 649 dev_err(&i2c->dev, "Can not allocate memory\n"); 650 return -ENOMEM; 651 } 652 653 if (i2c->dev.platform_data) 654 memcpy(&wm9090->pdata, i2c->dev.platform_data, 655 sizeof(wm9090->pdata)); 656 657 i2c_set_clientdata(i2c, wm9090); 658 wm9090->control_data = i2c; 659 mutex_init(&wm9090->mutex); 660 661 ret = snd_soc_register_codec(&i2c->dev, 662 &soc_codec_dev_wm9090, NULL, 0); 663 if (ret < 0) 664 kfree(wm9090); 665 return ret; 666 } 667 668 static int __devexit wm9090_i2c_remove(struct i2c_client *i2c) 669 { 670 struct wm9090_priv *wm9090 = i2c_get_clientdata(i2c); 671 672 snd_soc_unregister_codec(&i2c->dev); 673 kfree(wm9090); 674 675 return 0; 676 } 677 678 static const struct i2c_device_id wm9090_id[] = { 679 { "wm9090", 0 }, 680 { } 681 }; 682 MODULE_DEVICE_TABLE(i2c, wm9090_id); 683 684 static struct i2c_driver wm9090_i2c_driver = { 685 .driver = { 686 .name = "wm9090-codec", 687 .owner = THIS_MODULE, 688 }, 689 .probe = wm9090_i2c_probe, 690 .remove = __devexit_p(wm9090_i2c_remove), 691 .id_table = wm9090_id, 692 }; 693 694 static int __init wm9090_init(void) 695 { 696 return i2c_add_driver(&wm9090_i2c_driver); 697 } 698 module_init(wm9090_init); 699 700 static void __exit wm9090_exit(void) 701 { 702 i2c_del_driver(&wm9090_i2c_driver); 703 } 704 module_exit(wm9090_exit); 705 706 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 707 MODULE_DESCRIPTION("WM9090 ASoC driver"); 708 MODULE_LICENSE("GPL"); 709