1 /* 2 * wm8988.c -- WM8988 ALSA SoC audio driver 3 * 4 * Copyright 2009 Wolfson Microelectronics plc 5 * Copyright 2005 Openedhand Ltd. 6 * 7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/init.h> 17 #include <linux/delay.h> 18 #include <linux/pm.h> 19 #include <linux/i2c.h> 20 #include <linux/spi/spi.h> 21 #include <linux/platform_device.h> 22 #include <sound/core.h> 23 #include <sound/pcm.h> 24 #include <sound/pcm_params.h> 25 #include <sound/tlv.h> 26 #include <sound/soc.h> 27 #include <sound/soc-dapm.h> 28 #include <sound/initval.h> 29 30 #include "wm8988.h" 31 32 /* 33 * wm8988 register cache 34 * We can't read the WM8988 register space when we 35 * are using 2 wire for device control, so we cache them instead. 36 */ 37 static const u16 wm8988_reg[] = { 38 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 39 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 40 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 41 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 42 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 43 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 44 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 45 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 46 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 47 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 48 0x0079, 0x0079, 0x0079, /* 40 */ 49 }; 50 51 /* codec private data */ 52 struct wm8988_priv { 53 unsigned int sysclk; 54 struct snd_soc_codec codec; 55 struct snd_pcm_hw_constraint_list *sysclk_constraints; 56 u16 reg_cache[WM8988_NUM_REG]; 57 }; 58 59 60 /* 61 * read wm8988 register cache 62 */ 63 static inline unsigned int wm8988_read_reg_cache(struct snd_soc_codec *codec, 64 unsigned int reg) 65 { 66 u16 *cache = codec->reg_cache; 67 if (reg > WM8988_NUM_REG) 68 return -1; 69 return cache[reg]; 70 } 71 72 /* 73 * write wm8988 register cache 74 */ 75 static inline void wm8988_write_reg_cache(struct snd_soc_codec *codec, 76 unsigned int reg, unsigned int value) 77 { 78 u16 *cache = codec->reg_cache; 79 if (reg > WM8988_NUM_REG) 80 return; 81 cache[reg] = value; 82 } 83 84 static int wm8988_write(struct snd_soc_codec *codec, unsigned int reg, 85 unsigned int value) 86 { 87 u8 data[2]; 88 89 /* data is 90 * D15..D9 WM8753 register offset 91 * D8...D0 register data 92 */ 93 data[0] = (reg << 1) | ((value >> 8) & 0x0001); 94 data[1] = value & 0x00ff; 95 96 wm8988_write_reg_cache(codec, reg, value); 97 if (codec->hw_write(codec->control_data, data, 2) == 2) 98 return 0; 99 else 100 return -EIO; 101 } 102 103 #define wm8988_reset(c) wm8988_write(c, WM8988_RESET, 0) 104 105 /* 106 * WM8988 Controls 107 */ 108 109 static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"}; 110 static const struct soc_enum bass_boost = 111 SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt); 112 113 static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" }; 114 static const struct soc_enum bass_filter = 115 SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt); 116 117 static const char *treble_txt[] = {"8kHz", "4kHz"}; 118 static const struct soc_enum treble = 119 SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt); 120 121 static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"}; 122 static const struct soc_enum stereo_3d_lc = 123 SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt); 124 125 static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"}; 126 static const struct soc_enum stereo_3d_uc = 127 SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt); 128 129 static const char *stereo_3d_func_txt[] = {"Capture", "Playback"}; 130 static const struct soc_enum stereo_3d_func = 131 SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt); 132 133 static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"}; 134 static const struct soc_enum alc_func = 135 SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt); 136 137 static const char *ng_type_txt[] = {"Constant PGA Gain", 138 "Mute ADC Output"}; 139 static const struct soc_enum ng_type = 140 SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt); 141 142 static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 143 static const struct soc_enum deemph = 144 SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt); 145 146 static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert", 147 "L + R Invert"}; 148 static const struct soc_enum adcpol = 149 SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt); 150 151 static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0); 152 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); 153 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 154 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 155 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0); 156 157 static const struct snd_kcontrol_new wm8988_snd_controls[] = { 158 159 SOC_ENUM("Bass Boost", bass_boost), 160 SOC_ENUM("Bass Filter", bass_filter), 161 SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1), 162 163 SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0), 164 SOC_ENUM("Treble Cut-off", treble), 165 166 SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0), 167 SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0), 168 SOC_ENUM("3D Lower Cut-off", stereo_3d_lc), 169 SOC_ENUM("3D Upper Cut-off", stereo_3d_uc), 170 SOC_ENUM("3D Mode", stereo_3d_func), 171 172 SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0), 173 SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0), 174 SOC_ENUM("ALC Capture Function", alc_func), 175 SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0), 176 SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0), 177 SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0), 178 SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0), 179 SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0), 180 SOC_ENUM("ALC Capture NG Type", ng_type), 181 SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0), 182 183 SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0), 184 185 SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC, 186 0, 255, 0, adc_tlv), 187 SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL, 188 0, 63, 0, pga_tlv), 189 SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0), 190 SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1), 191 192 SOC_ENUM("Playback De-emphasis", deemph), 193 194 SOC_ENUM("Capture Polarity", adcpol), 195 SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0), 196 SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0), 197 198 SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv), 199 200 SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1, 201 bypass_tlv), 202 SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1, 203 bypass_tlv), 204 SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1, 205 bypass_tlv), 206 SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1, 207 bypass_tlv), 208 209 SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V, 210 WM8988_ROUT1V, 7, 1, 0), 211 SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V, 212 0, 127, 0, out_tlv), 213 214 SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V, 215 WM8988_ROUT2V, 7, 1, 0), 216 SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V, 217 0, 127, 0, out_tlv), 218 219 }; 220 221 /* 222 * DAPM Controls 223 */ 224 225 static int wm8988_lrc_control(struct snd_soc_dapm_widget *w, 226 struct snd_kcontrol *kcontrol, int event) 227 { 228 struct snd_soc_codec *codec = w->codec; 229 u16 adctl2 = wm8988_read_reg_cache(codec, WM8988_ADCTL2); 230 231 /* Use the DAC to gate LRC if active, otherwise use ADC */ 232 if (wm8988_read_reg_cache(codec, WM8988_PWR2) & 0x180) 233 adctl2 &= ~0x4; 234 else 235 adctl2 |= 0x4; 236 237 return wm8988_write(codec, WM8988_ADCTL2, adctl2); 238 } 239 240 static const char *wm8988_line_texts[] = { 241 "Line 1", "Line 2", "PGA", "Differential"}; 242 243 static const unsigned int wm8988_line_values[] = { 244 0, 1, 3, 4}; 245 246 static const struct soc_enum wm8988_lline_enum = 247 SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7, 248 ARRAY_SIZE(wm8988_line_texts), 249 wm8988_line_texts, 250 wm8988_line_values); 251 static const struct snd_kcontrol_new wm8988_left_line_controls = 252 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum); 253 254 static const struct soc_enum wm8988_rline_enum = 255 SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7, 256 ARRAY_SIZE(wm8988_line_texts), 257 wm8988_line_texts, 258 wm8988_line_values); 259 static const struct snd_kcontrol_new wm8988_right_line_controls = 260 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum); 261 262 /* Left Mixer */ 263 static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = { 264 SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0), 265 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0), 266 SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0), 267 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0), 268 }; 269 270 /* Right Mixer */ 271 static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = { 272 SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0), 273 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0), 274 SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0), 275 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0), 276 }; 277 278 static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"}; 279 static const unsigned int wm8988_pga_val[] = { 0, 1, 3 }; 280 281 /* Left PGA Mux */ 282 static const struct soc_enum wm8988_lpga_enum = 283 SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3, 284 ARRAY_SIZE(wm8988_pga_sel), 285 wm8988_pga_sel, 286 wm8988_pga_val); 287 static const struct snd_kcontrol_new wm8988_left_pga_controls = 288 SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum); 289 290 /* Right PGA Mux */ 291 static const struct soc_enum wm8988_rpga_enum = 292 SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3, 293 ARRAY_SIZE(wm8988_pga_sel), 294 wm8988_pga_sel, 295 wm8988_pga_val); 296 static const struct snd_kcontrol_new wm8988_right_pga_controls = 297 SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum); 298 299 /* Differential Mux */ 300 static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"}; 301 static const struct soc_enum diffmux = 302 SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel); 303 static const struct snd_kcontrol_new wm8988_diffmux_controls = 304 SOC_DAPM_ENUM("Route", diffmux); 305 306 /* Mono ADC Mux */ 307 static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)", 308 "Mono (Right)", "Digital Mono"}; 309 static const struct soc_enum monomux = 310 SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux); 311 static const struct snd_kcontrol_new wm8988_monomux_controls = 312 SOC_DAPM_ENUM("Route", monomux); 313 314 static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = { 315 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1, 1, 0), 316 317 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0, 318 &wm8988_diffmux_controls), 319 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, 320 &wm8988_monomux_controls), 321 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, 322 &wm8988_monomux_controls), 323 324 SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0, 325 &wm8988_left_pga_controls), 326 SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0, 327 &wm8988_right_pga_controls), 328 329 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, 330 &wm8988_left_line_controls), 331 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, 332 &wm8988_right_line_controls), 333 334 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0), 335 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0), 336 337 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0), 338 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0), 339 340 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, 341 &wm8988_left_mixer_controls[0], 342 ARRAY_SIZE(wm8988_left_mixer_controls)), 343 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, 344 &wm8988_right_mixer_controls[0], 345 ARRAY_SIZE(wm8988_right_mixer_controls)), 346 347 SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0), 348 SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0), 349 SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0), 350 SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0), 351 352 SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control), 353 354 SND_SOC_DAPM_OUTPUT("LOUT1"), 355 SND_SOC_DAPM_OUTPUT("ROUT1"), 356 SND_SOC_DAPM_OUTPUT("LOUT2"), 357 SND_SOC_DAPM_OUTPUT("ROUT2"), 358 SND_SOC_DAPM_OUTPUT("VREF"), 359 360 SND_SOC_DAPM_INPUT("LINPUT1"), 361 SND_SOC_DAPM_INPUT("LINPUT2"), 362 SND_SOC_DAPM_INPUT("RINPUT1"), 363 SND_SOC_DAPM_INPUT("RINPUT2"), 364 }; 365 366 static const struct snd_soc_dapm_route audio_map[] = { 367 368 { "Left Line Mux", "Line 1", "LINPUT1" }, 369 { "Left Line Mux", "Line 2", "LINPUT2" }, 370 { "Left Line Mux", "PGA", "Left PGA Mux" }, 371 { "Left Line Mux", "Differential", "Differential Mux" }, 372 373 { "Right Line Mux", "Line 1", "RINPUT1" }, 374 { "Right Line Mux", "Line 2", "RINPUT2" }, 375 { "Right Line Mux", "PGA", "Right PGA Mux" }, 376 { "Right Line Mux", "Differential", "Differential Mux" }, 377 378 { "Left PGA Mux", "Line 1", "LINPUT1" }, 379 { "Left PGA Mux", "Line 2", "LINPUT2" }, 380 { "Left PGA Mux", "Differential", "Differential Mux" }, 381 382 { "Right PGA Mux", "Line 1", "RINPUT1" }, 383 { "Right PGA Mux", "Line 2", "RINPUT2" }, 384 { "Right PGA Mux", "Differential", "Differential Mux" }, 385 386 { "Differential Mux", "Line 1", "LINPUT1" }, 387 { "Differential Mux", "Line 1", "RINPUT1" }, 388 { "Differential Mux", "Line 2", "LINPUT2" }, 389 { "Differential Mux", "Line 2", "RINPUT2" }, 390 391 { "Left ADC Mux", "Stereo", "Left PGA Mux" }, 392 { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" }, 393 { "Left ADC Mux", "Digital Mono", "Left PGA Mux" }, 394 395 { "Right ADC Mux", "Stereo", "Right PGA Mux" }, 396 { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" }, 397 { "Right ADC Mux", "Digital Mono", "Right PGA Mux" }, 398 399 { "Left ADC", NULL, "Left ADC Mux" }, 400 { "Right ADC", NULL, "Right ADC Mux" }, 401 402 { "Left Line Mux", "Line 1", "LINPUT1" }, 403 { "Left Line Mux", "Line 2", "LINPUT2" }, 404 { "Left Line Mux", "PGA", "Left PGA Mux" }, 405 { "Left Line Mux", "Differential", "Differential Mux" }, 406 407 { "Right Line Mux", "Line 1", "RINPUT1" }, 408 { "Right Line Mux", "Line 2", "RINPUT2" }, 409 { "Right Line Mux", "PGA", "Right PGA Mux" }, 410 { "Right Line Mux", "Differential", "Differential Mux" }, 411 412 { "Left Mixer", "Playback Switch", "Left DAC" }, 413 { "Left Mixer", "Left Bypass Switch", "Left Line Mux" }, 414 { "Left Mixer", "Right Playback Switch", "Right DAC" }, 415 { "Left Mixer", "Right Bypass Switch", "Right Line Mux" }, 416 417 { "Right Mixer", "Left Playback Switch", "Left DAC" }, 418 { "Right Mixer", "Left Bypass Switch", "Left Line Mux" }, 419 { "Right Mixer", "Playback Switch", "Right DAC" }, 420 { "Right Mixer", "Right Bypass Switch", "Right Line Mux" }, 421 422 { "Left Out 1", NULL, "Left Mixer" }, 423 { "LOUT1", NULL, "Left Out 1" }, 424 { "Right Out 1", NULL, "Right Mixer" }, 425 { "ROUT1", NULL, "Right Out 1" }, 426 427 { "Left Out 2", NULL, "Left Mixer" }, 428 { "LOUT2", NULL, "Left Out 2" }, 429 { "Right Out 2", NULL, "Right Mixer" }, 430 { "ROUT2", NULL, "Right Out 2" }, 431 }; 432 433 struct _coeff_div { 434 u32 mclk; 435 u32 rate; 436 u16 fs; 437 u8 sr:5; 438 u8 usb:1; 439 }; 440 441 /* codec hifi mclk clock divider coefficients */ 442 static const struct _coeff_div coeff_div[] = { 443 /* 8k */ 444 {12288000, 8000, 1536, 0x6, 0x0}, 445 {11289600, 8000, 1408, 0x16, 0x0}, 446 {18432000, 8000, 2304, 0x7, 0x0}, 447 {16934400, 8000, 2112, 0x17, 0x0}, 448 {12000000, 8000, 1500, 0x6, 0x1}, 449 450 /* 11.025k */ 451 {11289600, 11025, 1024, 0x18, 0x0}, 452 {16934400, 11025, 1536, 0x19, 0x0}, 453 {12000000, 11025, 1088, 0x19, 0x1}, 454 455 /* 16k */ 456 {12288000, 16000, 768, 0xa, 0x0}, 457 {18432000, 16000, 1152, 0xb, 0x0}, 458 {12000000, 16000, 750, 0xa, 0x1}, 459 460 /* 22.05k */ 461 {11289600, 22050, 512, 0x1a, 0x0}, 462 {16934400, 22050, 768, 0x1b, 0x0}, 463 {12000000, 22050, 544, 0x1b, 0x1}, 464 465 /* 32k */ 466 {12288000, 32000, 384, 0xc, 0x0}, 467 {18432000, 32000, 576, 0xd, 0x0}, 468 {12000000, 32000, 375, 0xa, 0x1}, 469 470 /* 44.1k */ 471 {11289600, 44100, 256, 0x10, 0x0}, 472 {16934400, 44100, 384, 0x11, 0x0}, 473 {12000000, 44100, 272, 0x11, 0x1}, 474 475 /* 48k */ 476 {12288000, 48000, 256, 0x0, 0x0}, 477 {18432000, 48000, 384, 0x1, 0x0}, 478 {12000000, 48000, 250, 0x0, 0x1}, 479 480 /* 88.2k */ 481 {11289600, 88200, 128, 0x1e, 0x0}, 482 {16934400, 88200, 192, 0x1f, 0x0}, 483 {12000000, 88200, 136, 0x1f, 0x1}, 484 485 /* 96k */ 486 {12288000, 96000, 128, 0xe, 0x0}, 487 {18432000, 96000, 192, 0xf, 0x0}, 488 {12000000, 96000, 125, 0xe, 0x1}, 489 }; 490 491 static inline int get_coeff(int mclk, int rate) 492 { 493 int i; 494 495 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 496 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 497 return i; 498 } 499 500 return -EINVAL; 501 } 502 503 /* The set of rates we can generate from the above for each SYSCLK */ 504 505 static unsigned int rates_12288[] = { 506 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000, 507 }; 508 509 static struct snd_pcm_hw_constraint_list constraints_12288 = { 510 .count = ARRAY_SIZE(rates_12288), 511 .list = rates_12288, 512 }; 513 514 static unsigned int rates_112896[] = { 515 8000, 11025, 22050, 44100, 516 }; 517 518 static struct snd_pcm_hw_constraint_list constraints_112896 = { 519 .count = ARRAY_SIZE(rates_112896), 520 .list = rates_112896, 521 }; 522 523 static unsigned int rates_12[] = { 524 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000, 525 48000, 88235, 96000, 526 }; 527 528 static struct snd_pcm_hw_constraint_list constraints_12 = { 529 .count = ARRAY_SIZE(rates_12), 530 .list = rates_12, 531 }; 532 533 /* 534 * Note that this should be called from init rather than from hw_params. 535 */ 536 static int wm8988_set_dai_sysclk(struct snd_soc_dai *codec_dai, 537 int clk_id, unsigned int freq, int dir) 538 { 539 struct snd_soc_codec *codec = codec_dai->codec; 540 struct wm8988_priv *wm8988 = codec->private_data; 541 542 switch (freq) { 543 case 11289600: 544 case 18432000: 545 case 22579200: 546 case 36864000: 547 wm8988->sysclk_constraints = &constraints_112896; 548 wm8988->sysclk = freq; 549 return 0; 550 551 case 12288000: 552 case 16934400: 553 case 24576000: 554 case 33868800: 555 wm8988->sysclk_constraints = &constraints_12288; 556 wm8988->sysclk = freq; 557 return 0; 558 559 case 12000000: 560 case 24000000: 561 wm8988->sysclk_constraints = &constraints_12; 562 wm8988->sysclk = freq; 563 return 0; 564 } 565 return -EINVAL; 566 } 567 568 static int wm8988_set_dai_fmt(struct snd_soc_dai *codec_dai, 569 unsigned int fmt) 570 { 571 struct snd_soc_codec *codec = codec_dai->codec; 572 u16 iface = 0; 573 574 /* set master/slave audio interface */ 575 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 576 case SND_SOC_DAIFMT_CBM_CFM: 577 iface = 0x0040; 578 break; 579 case SND_SOC_DAIFMT_CBS_CFS: 580 break; 581 default: 582 return -EINVAL; 583 } 584 585 /* interface format */ 586 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 587 case SND_SOC_DAIFMT_I2S: 588 iface |= 0x0002; 589 break; 590 case SND_SOC_DAIFMT_RIGHT_J: 591 break; 592 case SND_SOC_DAIFMT_LEFT_J: 593 iface |= 0x0001; 594 break; 595 case SND_SOC_DAIFMT_DSP_A: 596 iface |= 0x0003; 597 break; 598 case SND_SOC_DAIFMT_DSP_B: 599 iface |= 0x0013; 600 break; 601 default: 602 return -EINVAL; 603 } 604 605 /* clock inversion */ 606 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 607 case SND_SOC_DAIFMT_NB_NF: 608 break; 609 case SND_SOC_DAIFMT_IB_IF: 610 iface |= 0x0090; 611 break; 612 case SND_SOC_DAIFMT_IB_NF: 613 iface |= 0x0080; 614 break; 615 case SND_SOC_DAIFMT_NB_IF: 616 iface |= 0x0010; 617 break; 618 default: 619 return -EINVAL; 620 } 621 622 wm8988_write(codec, WM8988_IFACE, iface); 623 return 0; 624 } 625 626 static int wm8988_pcm_startup(struct snd_pcm_substream *substream, 627 struct snd_soc_dai *dai) 628 { 629 struct snd_soc_codec *codec = dai->codec; 630 struct wm8988_priv *wm8988 = codec->private_data; 631 632 /* The set of sample rates that can be supported depends on the 633 * MCLK supplied to the CODEC - enforce this. 634 */ 635 if (!wm8988->sysclk) { 636 dev_err(codec->dev, 637 "No MCLK configured, call set_sysclk() on init\n"); 638 return -EINVAL; 639 } 640 641 snd_pcm_hw_constraint_list(substream->runtime, 0, 642 SNDRV_PCM_HW_PARAM_RATE, 643 wm8988->sysclk_constraints); 644 645 return 0; 646 } 647 648 static int wm8988_pcm_hw_params(struct snd_pcm_substream *substream, 649 struct snd_pcm_hw_params *params, 650 struct snd_soc_dai *dai) 651 { 652 struct snd_soc_pcm_runtime *rtd = substream->private_data; 653 struct snd_soc_device *socdev = rtd->socdev; 654 struct snd_soc_codec *codec = socdev->card->codec; 655 struct wm8988_priv *wm8988 = codec->private_data; 656 u16 iface = wm8988_read_reg_cache(codec, WM8988_IFACE) & 0x1f3; 657 u16 srate = wm8988_read_reg_cache(codec, WM8988_SRATE) & 0x180; 658 int coeff; 659 660 coeff = get_coeff(wm8988->sysclk, params_rate(params)); 661 if (coeff < 0) { 662 coeff = get_coeff(wm8988->sysclk / 2, params_rate(params)); 663 srate |= 0x40; 664 } 665 if (coeff < 0) { 666 dev_err(codec->dev, 667 "Unable to configure sample rate %dHz with %dHz MCLK\n", 668 params_rate(params), wm8988->sysclk); 669 return coeff; 670 } 671 672 /* bit size */ 673 switch (params_format(params)) { 674 case SNDRV_PCM_FORMAT_S16_LE: 675 break; 676 case SNDRV_PCM_FORMAT_S20_3LE: 677 iface |= 0x0004; 678 break; 679 case SNDRV_PCM_FORMAT_S24_LE: 680 iface |= 0x0008; 681 break; 682 case SNDRV_PCM_FORMAT_S32_LE: 683 iface |= 0x000c; 684 break; 685 } 686 687 /* set iface & srate */ 688 wm8988_write(codec, WM8988_IFACE, iface); 689 if (coeff >= 0) 690 wm8988_write(codec, WM8988_SRATE, srate | 691 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); 692 693 return 0; 694 } 695 696 static int wm8988_mute(struct snd_soc_dai *dai, int mute) 697 { 698 struct snd_soc_codec *codec = dai->codec; 699 u16 mute_reg = wm8988_read_reg_cache(codec, WM8988_ADCDAC) & 0xfff7; 700 701 if (mute) 702 wm8988_write(codec, WM8988_ADCDAC, mute_reg | 0x8); 703 else 704 wm8988_write(codec, WM8988_ADCDAC, mute_reg); 705 return 0; 706 } 707 708 static int wm8988_set_bias_level(struct snd_soc_codec *codec, 709 enum snd_soc_bias_level level) 710 { 711 u16 pwr_reg = wm8988_read_reg_cache(codec, WM8988_PWR1) & ~0x1c1; 712 713 switch (level) { 714 case SND_SOC_BIAS_ON: 715 break; 716 717 case SND_SOC_BIAS_PREPARE: 718 /* VREF, VMID=2x50k, digital enabled */ 719 wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x00c0); 720 break; 721 722 case SND_SOC_BIAS_STANDBY: 723 if (codec->bias_level == SND_SOC_BIAS_OFF) { 724 /* VREF, VMID=2x5k */ 725 wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x1c1); 726 727 /* Charge caps */ 728 msleep(100); 729 } 730 731 /* VREF, VMID=2*500k, digital stopped */ 732 wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x0141); 733 break; 734 735 case SND_SOC_BIAS_OFF: 736 wm8988_write(codec, WM8988_PWR1, 0x0000); 737 break; 738 } 739 codec->bias_level = level; 740 return 0; 741 } 742 743 #define WM8988_RATES SNDRV_PCM_RATE_8000_96000 744 745 #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 746 SNDRV_PCM_FMTBIT_S24_LE) 747 748 static struct snd_soc_dai_ops wm8988_ops = { 749 .startup = wm8988_pcm_startup, 750 .hw_params = wm8988_pcm_hw_params, 751 .set_fmt = wm8988_set_dai_fmt, 752 .set_sysclk = wm8988_set_dai_sysclk, 753 .digital_mute = wm8988_mute, 754 }; 755 756 struct snd_soc_dai wm8988_dai = { 757 .name = "WM8988", 758 .playback = { 759 .stream_name = "Playback", 760 .channels_min = 1, 761 .channels_max = 2, 762 .rates = WM8988_RATES, 763 .formats = WM8988_FORMATS, 764 }, 765 .capture = { 766 .stream_name = "Capture", 767 .channels_min = 1, 768 .channels_max = 2, 769 .rates = WM8988_RATES, 770 .formats = WM8988_FORMATS, 771 }, 772 .ops = &wm8988_ops, 773 .symmetric_rates = 1, 774 }; 775 EXPORT_SYMBOL_GPL(wm8988_dai); 776 777 static int wm8988_suspend(struct platform_device *pdev, pm_message_t state) 778 { 779 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 780 struct snd_soc_codec *codec = socdev->card->codec; 781 782 wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF); 783 return 0; 784 } 785 786 static int wm8988_resume(struct platform_device *pdev) 787 { 788 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 789 struct snd_soc_codec *codec = socdev->card->codec; 790 int i; 791 u8 data[2]; 792 u16 *cache = codec->reg_cache; 793 794 /* Sync reg_cache with the hardware */ 795 for (i = 0; i < WM8988_NUM_REG; i++) { 796 if (i == WM8988_RESET) 797 continue; 798 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 799 data[1] = cache[i] & 0x00ff; 800 codec->hw_write(codec->control_data, data, 2); 801 } 802 803 wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 804 805 return 0; 806 } 807 808 static struct snd_soc_codec *wm8988_codec; 809 810 static int wm8988_probe(struct platform_device *pdev) 811 { 812 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 813 struct snd_soc_codec *codec; 814 int ret = 0; 815 816 if (wm8988_codec == NULL) { 817 dev_err(&pdev->dev, "Codec device not registered\n"); 818 return -ENODEV; 819 } 820 821 socdev->card->codec = wm8988_codec; 822 codec = wm8988_codec; 823 824 /* register pcms */ 825 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 826 if (ret < 0) { 827 dev_err(codec->dev, "failed to create pcms: %d\n", ret); 828 goto pcm_err; 829 } 830 831 snd_soc_add_controls(codec, wm8988_snd_controls, 832 ARRAY_SIZE(wm8988_snd_controls)); 833 snd_soc_dapm_new_controls(codec, wm8988_dapm_widgets, 834 ARRAY_SIZE(wm8988_dapm_widgets)); 835 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 836 snd_soc_dapm_new_widgets(codec); 837 838 ret = snd_soc_init_card(socdev); 839 if (ret < 0) { 840 dev_err(codec->dev, "failed to register card: %d\n", ret); 841 goto card_err; 842 } 843 844 return ret; 845 846 card_err: 847 snd_soc_free_pcms(socdev); 848 snd_soc_dapm_free(socdev); 849 pcm_err: 850 return ret; 851 } 852 853 static int wm8988_remove(struct platform_device *pdev) 854 { 855 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 856 857 snd_soc_free_pcms(socdev); 858 snd_soc_dapm_free(socdev); 859 860 return 0; 861 } 862 863 struct snd_soc_codec_device soc_codec_dev_wm8988 = { 864 .probe = wm8988_probe, 865 .remove = wm8988_remove, 866 .suspend = wm8988_suspend, 867 .resume = wm8988_resume, 868 }; 869 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8988); 870 871 static int wm8988_register(struct wm8988_priv *wm8988) 872 { 873 struct snd_soc_codec *codec = &wm8988->codec; 874 int ret; 875 u16 reg; 876 877 if (wm8988_codec) { 878 dev_err(codec->dev, "Another WM8988 is registered\n"); 879 ret = -EINVAL; 880 goto err; 881 } 882 883 mutex_init(&codec->mutex); 884 INIT_LIST_HEAD(&codec->dapm_widgets); 885 INIT_LIST_HEAD(&codec->dapm_paths); 886 887 codec->private_data = wm8988; 888 codec->name = "WM8988"; 889 codec->owner = THIS_MODULE; 890 codec->read = wm8988_read_reg_cache; 891 codec->write = wm8988_write; 892 codec->dai = &wm8988_dai; 893 codec->num_dai = 1; 894 codec->reg_cache_size = ARRAY_SIZE(wm8988->reg_cache); 895 codec->reg_cache = &wm8988->reg_cache; 896 codec->bias_level = SND_SOC_BIAS_OFF; 897 codec->set_bias_level = wm8988_set_bias_level; 898 899 memcpy(codec->reg_cache, wm8988_reg, 900 sizeof(wm8988_reg)); 901 902 ret = wm8988_reset(codec); 903 if (ret < 0) { 904 dev_err(codec->dev, "Failed to issue reset\n"); 905 return ret; 906 } 907 908 /* set the update bits (we always update left then right) */ 909 reg = wm8988_read_reg_cache(codec, WM8988_RADC); 910 wm8988_write(codec, WM8988_RADC, reg | 0x100); 911 reg = wm8988_read_reg_cache(codec, WM8988_RDAC); 912 wm8988_write(codec, WM8988_RDAC, reg | 0x0100); 913 reg = wm8988_read_reg_cache(codec, WM8988_ROUT1V); 914 wm8988_write(codec, WM8988_ROUT1V, reg | 0x0100); 915 reg = wm8988_read_reg_cache(codec, WM8988_ROUT2V); 916 wm8988_write(codec, WM8988_ROUT2V, reg | 0x0100); 917 reg = wm8988_read_reg_cache(codec, WM8988_RINVOL); 918 wm8988_write(codec, WM8988_RINVOL, reg | 0x0100); 919 920 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_STANDBY); 921 922 wm8988_dai.dev = codec->dev; 923 924 wm8988_codec = codec; 925 926 ret = snd_soc_register_codec(codec); 927 if (ret != 0) { 928 dev_err(codec->dev, "Failed to register codec: %d\n", ret); 929 return ret; 930 } 931 932 ret = snd_soc_register_dai(&wm8988_dai); 933 if (ret != 0) { 934 dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 935 snd_soc_unregister_codec(codec); 936 return ret; 937 } 938 939 return 0; 940 941 err: 942 kfree(wm8988); 943 return ret; 944 } 945 946 static void wm8988_unregister(struct wm8988_priv *wm8988) 947 { 948 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_OFF); 949 snd_soc_unregister_dai(&wm8988_dai); 950 snd_soc_unregister_codec(&wm8988->codec); 951 kfree(wm8988); 952 wm8988_codec = NULL; 953 } 954 955 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 956 static int wm8988_i2c_probe(struct i2c_client *i2c, 957 const struct i2c_device_id *id) 958 { 959 struct wm8988_priv *wm8988; 960 struct snd_soc_codec *codec; 961 962 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL); 963 if (wm8988 == NULL) 964 return -ENOMEM; 965 966 codec = &wm8988->codec; 967 codec->hw_write = (hw_write_t)i2c_master_send; 968 969 i2c_set_clientdata(i2c, wm8988); 970 codec->control_data = i2c; 971 972 codec->dev = &i2c->dev; 973 974 return wm8988_register(wm8988); 975 } 976 977 static int wm8988_i2c_remove(struct i2c_client *client) 978 { 979 struct wm8988_priv *wm8988 = i2c_get_clientdata(client); 980 wm8988_unregister(wm8988); 981 return 0; 982 } 983 984 static const struct i2c_device_id wm8988_i2c_id[] = { 985 { "wm8988", 0 }, 986 { } 987 }; 988 MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id); 989 990 static struct i2c_driver wm8988_i2c_driver = { 991 .driver = { 992 .name = "WM8988", 993 .owner = THIS_MODULE, 994 }, 995 .probe = wm8988_i2c_probe, 996 .remove = wm8988_i2c_remove, 997 .id_table = wm8988_i2c_id, 998 }; 999 #endif 1000 1001 #if defined(CONFIG_SPI_MASTER) 1002 static int wm8988_spi_write(struct spi_device *spi, const char *data, int len) 1003 { 1004 struct spi_transfer t; 1005 struct spi_message m; 1006 u8 msg[2]; 1007 1008 if (len <= 0) 1009 return 0; 1010 1011 msg[0] = data[0]; 1012 msg[1] = data[1]; 1013 1014 spi_message_init(&m); 1015 memset(&t, 0, (sizeof t)); 1016 1017 t.tx_buf = &msg[0]; 1018 t.len = len; 1019 1020 spi_message_add_tail(&t, &m); 1021 spi_sync(spi, &m); 1022 1023 return len; 1024 } 1025 1026 static int __devinit wm8988_spi_probe(struct spi_device *spi) 1027 { 1028 struct wm8988_priv *wm8988; 1029 struct snd_soc_codec *codec; 1030 1031 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL); 1032 if (wm8988 == NULL) 1033 return -ENOMEM; 1034 1035 codec = &wm8988->codec; 1036 codec->hw_write = (hw_write_t)wm8988_spi_write; 1037 codec->control_data = spi; 1038 codec->dev = &spi->dev; 1039 1040 dev_set_drvdata(&spi->dev, wm8988); 1041 1042 return wm8988_register(wm8988); 1043 } 1044 1045 static int __devexit wm8988_spi_remove(struct spi_device *spi) 1046 { 1047 struct wm8988_priv *wm8988 = dev_get_drvdata(&spi->dev); 1048 1049 wm8988_unregister(wm8988); 1050 1051 return 0; 1052 } 1053 1054 static struct spi_driver wm8988_spi_driver = { 1055 .driver = { 1056 .name = "wm8988", 1057 .bus = &spi_bus_type, 1058 .owner = THIS_MODULE, 1059 }, 1060 .probe = wm8988_spi_probe, 1061 .remove = __devexit_p(wm8988_spi_remove), 1062 }; 1063 #endif 1064 1065 static int __init wm8988_modinit(void) 1066 { 1067 int ret; 1068 1069 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 1070 ret = i2c_add_driver(&wm8988_i2c_driver); 1071 if (ret != 0) 1072 pr_err("WM8988: Unable to register I2C driver: %d\n", ret); 1073 #endif 1074 #if defined(CONFIG_SPI_MASTER) 1075 ret = spi_register_driver(&wm8988_spi_driver); 1076 if (ret != 0) 1077 pr_err("WM8988: Unable to register SPI driver: %d\n", ret); 1078 #endif 1079 return ret; 1080 } 1081 module_init(wm8988_modinit); 1082 1083 static void __exit wm8988_exit(void) 1084 { 1085 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 1086 i2c_del_driver(&wm8988_i2c_driver); 1087 #endif 1088 #if defined(CONFIG_SPI_MASTER) 1089 spi_unregister_driver(&wm8988_spi_driver); 1090 #endif 1091 } 1092 module_exit(wm8988_exit); 1093 1094 1095 MODULE_DESCRIPTION("ASoC WM8988 driver"); 1096 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 1097 MODULE_LICENSE("GPL"); 1098