1 /* 2 * wm8960.c -- WM8960 ALSA SoC Audio driver 3 * 4 * Copyright 2007-11 Wolfson Microelectronics, plc 5 * 6 * Author: Liam Girdwood 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/init.h> 16 #include <linux/delay.h> 17 #include <linux/pm.h> 18 #include <linux/clk.h> 19 #include <linux/i2c.h> 20 #include <linux/slab.h> 21 #include <sound/core.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 #include <sound/soc.h> 25 #include <sound/initval.h> 26 #include <sound/tlv.h> 27 #include <sound/wm8960.h> 28 29 #include "wm8960.h" 30 31 /* R25 - Power 1 */ 32 #define WM8960_VMID_MASK 0x180 33 #define WM8960_VREF 0x40 34 35 /* R26 - Power 2 */ 36 #define WM8960_PWR2_LOUT1 0x40 37 #define WM8960_PWR2_ROUT1 0x20 38 #define WM8960_PWR2_OUT3 0x02 39 40 /* R28 - Anti-pop 1 */ 41 #define WM8960_POBCTRL 0x80 42 #define WM8960_BUFDCOPEN 0x10 43 #define WM8960_BUFIOEN 0x08 44 #define WM8960_SOFT_ST 0x04 45 #define WM8960_HPSTBY 0x01 46 47 /* R29 - Anti-pop 2 */ 48 #define WM8960_DISOP 0x40 49 #define WM8960_DRES_MASK 0x30 50 51 static bool is_pll_freq_available(unsigned int source, unsigned int target); 52 static int wm8960_set_pll(struct snd_soc_component *component, 53 unsigned int freq_in, unsigned int freq_out); 54 /* 55 * wm8960 register cache 56 * We can't read the WM8960 register space when we are 57 * using 2 wire for device control, so we cache them instead. 58 */ 59 static const struct reg_default wm8960_reg_defaults[] = { 60 { 0x0, 0x00a7 }, 61 { 0x1, 0x00a7 }, 62 { 0x2, 0x0000 }, 63 { 0x3, 0x0000 }, 64 { 0x4, 0x0000 }, 65 { 0x5, 0x0008 }, 66 { 0x6, 0x0000 }, 67 { 0x7, 0x000a }, 68 { 0x8, 0x01c0 }, 69 { 0x9, 0x0000 }, 70 { 0xa, 0x00ff }, 71 { 0xb, 0x00ff }, 72 73 { 0x10, 0x0000 }, 74 { 0x11, 0x007b }, 75 { 0x12, 0x0100 }, 76 { 0x13, 0x0032 }, 77 { 0x14, 0x0000 }, 78 { 0x15, 0x00c3 }, 79 { 0x16, 0x00c3 }, 80 { 0x17, 0x01c0 }, 81 { 0x18, 0x0000 }, 82 { 0x19, 0x0000 }, 83 { 0x1a, 0x0000 }, 84 { 0x1b, 0x0000 }, 85 { 0x1c, 0x0000 }, 86 { 0x1d, 0x0000 }, 87 88 { 0x20, 0x0100 }, 89 { 0x21, 0x0100 }, 90 { 0x22, 0x0050 }, 91 92 { 0x25, 0x0050 }, 93 { 0x26, 0x0000 }, 94 { 0x27, 0x0000 }, 95 { 0x28, 0x0000 }, 96 { 0x29, 0x0000 }, 97 { 0x2a, 0x0040 }, 98 { 0x2b, 0x0000 }, 99 { 0x2c, 0x0000 }, 100 { 0x2d, 0x0050 }, 101 { 0x2e, 0x0050 }, 102 { 0x2f, 0x0000 }, 103 { 0x30, 0x0002 }, 104 { 0x31, 0x0037 }, 105 106 { 0x33, 0x0080 }, 107 { 0x34, 0x0008 }, 108 { 0x35, 0x0031 }, 109 { 0x36, 0x0026 }, 110 { 0x37, 0x00e9 }, 111 }; 112 113 static bool wm8960_volatile(struct device *dev, unsigned int reg) 114 { 115 switch (reg) { 116 case WM8960_RESET: 117 return true; 118 default: 119 return false; 120 } 121 } 122 123 struct wm8960_priv { 124 struct clk *mclk; 125 struct regmap *regmap; 126 int (*set_bias_level)(struct snd_soc_component *, 127 enum snd_soc_bias_level level); 128 struct snd_soc_dapm_widget *lout1; 129 struct snd_soc_dapm_widget *rout1; 130 struct snd_soc_dapm_widget *out3; 131 bool deemph; 132 int lrclk; 133 int bclk; 134 int sysclk; 135 int clk_id; 136 int freq_in; 137 bool is_stream_in_use[2]; 138 struct wm8960_data pdata; 139 }; 140 141 #define wm8960_reset(c) regmap_write(c, WM8960_RESET, 0) 142 143 /* enumerated controls */ 144 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", 145 "Right Inverted", "Stereo Inversion"}; 146 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; 147 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; 148 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; 149 static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; 150 static const char *wm8960_adc_data_output_sel[] = { 151 "Left Data = Left ADC; Right Data = Right ADC", 152 "Left Data = Left ADC; Right Data = Left ADC", 153 "Left Data = Right ADC; Right Data = Right ADC", 154 "Left Data = Right ADC; Right Data = Left ADC", 155 }; 156 static const char *wm8960_dmonomix[] = {"Stereo", "Mono"}; 157 158 static const struct soc_enum wm8960_enum[] = { 159 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), 160 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), 161 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), 162 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), 163 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), 164 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), 165 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 2, 4, wm8960_adc_data_output_sel), 166 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 4, 2, wm8960_dmonomix), 167 }; 168 169 static const int deemph_settings[] = { 0, 32000, 44100, 48000 }; 170 171 static int wm8960_set_deemph(struct snd_soc_component *component) 172 { 173 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 174 int val, i, best; 175 176 /* If we're using deemphasis select the nearest available sample 177 * rate. 178 */ 179 if (wm8960->deemph) { 180 best = 1; 181 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) { 182 if (abs(deemph_settings[i] - wm8960->lrclk) < 183 abs(deemph_settings[best] - wm8960->lrclk)) 184 best = i; 185 } 186 187 val = best << 1; 188 } else { 189 val = 0; 190 } 191 192 dev_dbg(component->dev, "Set deemphasis %d\n", val); 193 194 return snd_soc_component_update_bits(component, WM8960_DACCTL1, 195 0x6, val); 196 } 197 198 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol, 199 struct snd_ctl_elem_value *ucontrol) 200 { 201 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 202 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 203 204 ucontrol->value.integer.value[0] = wm8960->deemph; 205 return 0; 206 } 207 208 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol, 209 struct snd_ctl_elem_value *ucontrol) 210 { 211 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 212 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 213 unsigned int deemph = ucontrol->value.integer.value[0]; 214 215 if (deemph > 1) 216 return -EINVAL; 217 218 wm8960->deemph = deemph; 219 220 return wm8960_set_deemph(component); 221 } 222 223 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); 224 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1725, 75, 0); 225 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 226 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); 227 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 228 static const DECLARE_TLV_DB_SCALE(lineinboost_tlv, -1500, 300, 1); 229 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(micboost_tlv, 230 0, 1, TLV_DB_SCALE_ITEM(0, 1300, 0), 231 2, 3, TLV_DB_SCALE_ITEM(2000, 900, 0), 232 ); 233 234 static const struct snd_kcontrol_new wm8960_snd_controls[] = { 235 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, 236 0, 63, 0, inpga_tlv), 237 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, 238 6, 1, 0), 239 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, 240 7, 1, 1), 241 242 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume", 243 WM8960_INBMIX1, 4, 7, 0, lineinboost_tlv), 244 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume", 245 WM8960_INBMIX1, 1, 7, 0, lineinboost_tlv), 246 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume", 247 WM8960_INBMIX2, 4, 7, 0, lineinboost_tlv), 248 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume", 249 WM8960_INBMIX2, 1, 7, 0, lineinboost_tlv), 250 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT1 Volume", 251 WM8960_RINPATH, 4, 3, 0, micboost_tlv), 252 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT1 Volume", 253 WM8960_LINPATH, 4, 3, 0, micboost_tlv), 254 255 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, 256 0, 255, 0, dac_tlv), 257 258 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, 259 0, 127, 0, out_tlv), 260 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, 261 7, 1, 0), 262 263 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, 264 0, 127, 0, out_tlv), 265 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, 266 7, 1, 0), 267 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), 268 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), 269 270 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), 271 SOC_ENUM("ADC Polarity", wm8960_enum[0]), 272 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), 273 274 SOC_ENUM("DAC Polarity", wm8960_enum[1]), 275 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, 276 wm8960_get_deemph, wm8960_put_deemph), 277 278 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]), 279 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]), 280 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), 281 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), 282 283 SOC_ENUM("ALC Function", wm8960_enum[4]), 284 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), 285 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), 286 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), 287 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), 288 SOC_ENUM("ALC Mode", wm8960_enum[5]), 289 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), 290 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), 291 292 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), 293 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), 294 295 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC, 296 0, 255, 0, adc_tlv), 297 298 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", 299 WM8960_BYPASS1, 4, 7, 1, bypass_tlv), 300 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", 301 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), 302 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", 303 WM8960_BYPASS2, 4, 7, 1, bypass_tlv), 304 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", 305 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), 306 307 SOC_ENUM("ADC Data Output Select", wm8960_enum[6]), 308 SOC_ENUM("DAC Mono Mix", wm8960_enum[7]), 309 }; 310 311 static const struct snd_kcontrol_new wm8960_lin_boost[] = { 312 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), 313 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), 314 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), 315 }; 316 317 static const struct snd_kcontrol_new wm8960_lin[] = { 318 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), 319 }; 320 321 static const struct snd_kcontrol_new wm8960_rin_boost[] = { 322 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), 323 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), 324 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), 325 }; 326 327 static const struct snd_kcontrol_new wm8960_rin[] = { 328 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), 329 }; 330 331 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { 332 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), 333 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), 334 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), 335 }; 336 337 static const struct snd_kcontrol_new wm8960_routput_mixer[] = { 338 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), 339 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), 340 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), 341 }; 342 343 static const struct snd_kcontrol_new wm8960_mono_out[] = { 344 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), 345 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), 346 }; 347 348 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { 349 SND_SOC_DAPM_INPUT("LINPUT1"), 350 SND_SOC_DAPM_INPUT("RINPUT1"), 351 SND_SOC_DAPM_INPUT("LINPUT2"), 352 SND_SOC_DAPM_INPUT("RINPUT2"), 353 SND_SOC_DAPM_INPUT("LINPUT3"), 354 SND_SOC_DAPM_INPUT("RINPUT3"), 355 356 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0), 357 358 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, 359 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), 360 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, 361 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), 362 363 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, 364 wm8960_lin, ARRAY_SIZE(wm8960_lin)), 365 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, 366 wm8960_rin, ARRAY_SIZE(wm8960_rin)), 367 368 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0), 369 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0), 370 371 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), 372 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), 373 374 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, 375 &wm8960_loutput_mixer[0], 376 ARRAY_SIZE(wm8960_loutput_mixer)), 377 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, 378 &wm8960_routput_mixer[0], 379 ARRAY_SIZE(wm8960_routput_mixer)), 380 381 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), 382 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), 383 384 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), 385 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), 386 387 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), 388 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), 389 390 SND_SOC_DAPM_OUTPUT("SPK_LP"), 391 SND_SOC_DAPM_OUTPUT("SPK_LN"), 392 SND_SOC_DAPM_OUTPUT("HP_L"), 393 SND_SOC_DAPM_OUTPUT("HP_R"), 394 SND_SOC_DAPM_OUTPUT("SPK_RP"), 395 SND_SOC_DAPM_OUTPUT("SPK_RN"), 396 SND_SOC_DAPM_OUTPUT("OUT3"), 397 }; 398 399 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = { 400 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, 401 &wm8960_mono_out[0], 402 ARRAY_SIZE(wm8960_mono_out)), 403 }; 404 405 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */ 406 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = { 407 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0), 408 }; 409 410 static const struct snd_soc_dapm_route audio_paths[] = { 411 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, 412 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, 413 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, 414 415 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer" }, 416 { "Left Input Mixer", "Boost Switch", "LINPUT1" }, /* Really Boost Switch */ 417 { "Left Input Mixer", NULL, "LINPUT2" }, 418 { "Left Input Mixer", NULL, "LINPUT3" }, 419 420 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, 421 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, 422 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, 423 424 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer" }, 425 { "Right Input Mixer", "Boost Switch", "RINPUT1" }, /* Really Boost Switch */ 426 { "Right Input Mixer", NULL, "RINPUT2" }, 427 { "Right Input Mixer", NULL, "RINPUT3" }, 428 429 { "Left ADC", NULL, "Left Input Mixer" }, 430 { "Right ADC", NULL, "Right Input Mixer" }, 431 432 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, 433 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer" }, 434 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, 435 436 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, 437 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" }, 438 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, 439 440 { "LOUT1 PGA", NULL, "Left Output Mixer" }, 441 { "ROUT1 PGA", NULL, "Right Output Mixer" }, 442 443 { "HP_L", NULL, "LOUT1 PGA" }, 444 { "HP_R", NULL, "ROUT1 PGA" }, 445 446 { "Left Speaker PGA", NULL, "Left Output Mixer" }, 447 { "Right Speaker PGA", NULL, "Right Output Mixer" }, 448 449 { "Left Speaker Output", NULL, "Left Speaker PGA" }, 450 { "Right Speaker Output", NULL, "Right Speaker PGA" }, 451 452 { "SPK_LN", NULL, "Left Speaker Output" }, 453 { "SPK_LP", NULL, "Left Speaker Output" }, 454 { "SPK_RN", NULL, "Right Speaker Output" }, 455 { "SPK_RP", NULL, "Right Speaker Output" }, 456 }; 457 458 static const struct snd_soc_dapm_route audio_paths_out3[] = { 459 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, 460 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, 461 462 { "OUT3", NULL, "Mono Output Mixer", } 463 }; 464 465 static const struct snd_soc_dapm_route audio_paths_capless[] = { 466 { "HP_L", NULL, "OUT3 VMID" }, 467 { "HP_R", NULL, "OUT3 VMID" }, 468 469 { "OUT3 VMID", NULL, "Left Output Mixer" }, 470 { "OUT3 VMID", NULL, "Right Output Mixer" }, 471 }; 472 473 static int wm8960_add_widgets(struct snd_soc_component *component) 474 { 475 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 476 struct wm8960_data *pdata = &wm8960->pdata; 477 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 478 struct snd_soc_dapm_widget *w; 479 480 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets, 481 ARRAY_SIZE(wm8960_dapm_widgets)); 482 483 snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths)); 484 485 /* In capless mode OUT3 is used to provide VMID for the 486 * headphone outputs, otherwise it is used as a mono mixer. 487 */ 488 if (pdata && pdata->capless) { 489 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless, 490 ARRAY_SIZE(wm8960_dapm_widgets_capless)); 491 492 snd_soc_dapm_add_routes(dapm, audio_paths_capless, 493 ARRAY_SIZE(audio_paths_capless)); 494 } else { 495 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3, 496 ARRAY_SIZE(wm8960_dapm_widgets_out3)); 497 498 snd_soc_dapm_add_routes(dapm, audio_paths_out3, 499 ARRAY_SIZE(audio_paths_out3)); 500 } 501 502 /* We need to power up the headphone output stage out of 503 * sequence for capless mode. To save scanning the widget 504 * list each time to find the desired power state do so now 505 * and save the result. 506 */ 507 list_for_each_entry(w, &component->card->widgets, list) { 508 if (w->dapm != dapm) 509 continue; 510 if (strcmp(w->name, "LOUT1 PGA") == 0) 511 wm8960->lout1 = w; 512 if (strcmp(w->name, "ROUT1 PGA") == 0) 513 wm8960->rout1 = w; 514 if (strcmp(w->name, "OUT3 VMID") == 0) 515 wm8960->out3 = w; 516 } 517 518 return 0; 519 } 520 521 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, 522 unsigned int fmt) 523 { 524 struct snd_soc_component *component = codec_dai->component; 525 u16 iface = 0; 526 527 /* set master/slave audio interface */ 528 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 529 case SND_SOC_DAIFMT_CBM_CFM: 530 iface |= 0x0040; 531 break; 532 case SND_SOC_DAIFMT_CBS_CFS: 533 break; 534 default: 535 return -EINVAL; 536 } 537 538 /* interface format */ 539 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 540 case SND_SOC_DAIFMT_I2S: 541 iface |= 0x0002; 542 break; 543 case SND_SOC_DAIFMT_RIGHT_J: 544 break; 545 case SND_SOC_DAIFMT_LEFT_J: 546 iface |= 0x0001; 547 break; 548 case SND_SOC_DAIFMT_DSP_A: 549 iface |= 0x0003; 550 break; 551 case SND_SOC_DAIFMT_DSP_B: 552 iface |= 0x0013; 553 break; 554 default: 555 return -EINVAL; 556 } 557 558 /* clock inversion */ 559 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 560 case SND_SOC_DAIFMT_NB_NF: 561 break; 562 case SND_SOC_DAIFMT_IB_IF: 563 iface |= 0x0090; 564 break; 565 case SND_SOC_DAIFMT_IB_NF: 566 iface |= 0x0080; 567 break; 568 case SND_SOC_DAIFMT_NB_IF: 569 iface |= 0x0010; 570 break; 571 default: 572 return -EINVAL; 573 } 574 575 /* set iface */ 576 snd_soc_component_write(component, WM8960_IFACE1, iface); 577 return 0; 578 } 579 580 static struct { 581 int rate; 582 unsigned int val; 583 } alc_rates[] = { 584 { 48000, 0 }, 585 { 44100, 0 }, 586 { 32000, 1 }, 587 { 22050, 2 }, 588 { 24000, 2 }, 589 { 16000, 3 }, 590 { 11025, 4 }, 591 { 12000, 4 }, 592 { 8000, 5 }, 593 }; 594 595 /* -1 for reserved value */ 596 static const int sysclk_divs[] = { 1, -1, 2, -1 }; 597 598 /* Multiply 256 for internal 256 div */ 599 static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 }; 600 601 /* Multiply 10 to eliminate decimials */ 602 static const int bclk_divs[] = { 603 10, 15, 20, 30, 40, 55, 60, 80, 110, 604 120, 160, 220, 240, 320, 320, 320 605 }; 606 607 /** 608 * wm8960_configure_sysclk - checks if there is a sysclk frequency available 609 * The sysclk must be chosen such that: 610 * - sysclk = MCLK / sysclk_divs 611 * - lrclk = sysclk / dac_divs 612 * - 10 * bclk = sysclk / bclk_divs 613 * 614 * If we cannot find an exact match for (sysclk, lrclk, bclk) 615 * triplet, we relax the bclk such that bclk is chosen as the 616 * closest available frequency greater than expected bclk. 617 * 618 * @wm8960_priv: wm8960 codec private data 619 * @mclk: MCLK used to derive sysclk 620 * @sysclk_idx: sysclk_divs index for found sysclk 621 * @dac_idx: dac_divs index for found lrclk 622 * @bclk_idx: bclk_divs index for found bclk 623 * 624 * Returns: 625 * -1, in case no sysclk frequency available found 626 * >=0, in case we could derive bclk and lrclk from sysclk using 627 * (@sysclk_idx, @dac_idx, @bclk_idx) dividers 628 */ 629 static 630 int wm8960_configure_sysclk(struct wm8960_priv *wm8960, int mclk, 631 int *sysclk_idx, int *dac_idx, int *bclk_idx) 632 { 633 int sysclk, bclk, lrclk; 634 int i, j, k; 635 int diff, closest = mclk; 636 637 /* marker for no match */ 638 *bclk_idx = -1; 639 640 bclk = wm8960->bclk; 641 lrclk = wm8960->lrclk; 642 643 /* check if the sysclk frequency is available. */ 644 for (i = 0; i < ARRAY_SIZE(sysclk_divs); ++i) { 645 if (sysclk_divs[i] == -1) 646 continue; 647 sysclk = mclk / sysclk_divs[i]; 648 for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) { 649 if (sysclk != dac_divs[j] * lrclk) 650 continue; 651 for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) { 652 diff = sysclk - bclk * bclk_divs[k] / 10; 653 if (diff == 0) { 654 *sysclk_idx = i; 655 *dac_idx = j; 656 *bclk_idx = k; 657 break; 658 } 659 if (diff > 0 && closest > diff) { 660 *sysclk_idx = i; 661 *dac_idx = j; 662 *bclk_idx = k; 663 closest = diff; 664 } 665 } 666 if (k != ARRAY_SIZE(bclk_divs)) 667 break; 668 } 669 if (j != ARRAY_SIZE(dac_divs)) 670 break; 671 } 672 return *bclk_idx; 673 } 674 675 /** 676 * wm8960_configure_pll - checks if there is a PLL out frequency available 677 * The PLL out frequency must be chosen such that: 678 * - sysclk = lrclk * dac_divs 679 * - freq_out = sysclk * sysclk_divs 680 * - 10 * sysclk = bclk * bclk_divs 681 * 682 * If we cannot find an exact match for (sysclk, lrclk, bclk) 683 * triplet, we relax the bclk such that bclk is chosen as the 684 * closest available frequency greater than expected bclk. 685 * 686 * @component: component structure 687 * @freq_in: input frequency used to derive freq out via PLL 688 * @sysclk_idx: sysclk_divs index for found sysclk 689 * @dac_idx: dac_divs index for found lrclk 690 * @bclk_idx: bclk_divs index for found bclk 691 * 692 * Returns: 693 * < 0, in case no PLL frequency out available was found 694 * >=0, in case we could derive bclk, lrclk, sysclk from PLL out using 695 * (@sysclk_idx, @dac_idx, @bclk_idx) dividers 696 */ 697 static 698 int wm8960_configure_pll(struct snd_soc_component *component, int freq_in, 699 int *sysclk_idx, int *dac_idx, int *bclk_idx) 700 { 701 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 702 int sysclk, bclk, lrclk, freq_out; 703 int diff, closest, best_freq_out; 704 int i, j, k; 705 706 bclk = wm8960->bclk; 707 lrclk = wm8960->lrclk; 708 closest = freq_in; 709 710 best_freq_out = -EINVAL; 711 *sysclk_idx = *dac_idx = *bclk_idx = -1; 712 713 for (i = 0; i < ARRAY_SIZE(sysclk_divs); ++i) { 714 if (sysclk_divs[i] == -1) 715 continue; 716 for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) { 717 sysclk = lrclk * dac_divs[j]; 718 freq_out = sysclk * sysclk_divs[i]; 719 720 for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) { 721 if (!is_pll_freq_available(freq_in, freq_out)) 722 continue; 723 724 diff = sysclk - bclk * bclk_divs[k] / 10; 725 if (diff == 0) { 726 *sysclk_idx = i; 727 *dac_idx = j; 728 *bclk_idx = k; 729 return freq_out; 730 } 731 if (diff > 0 && closest > diff) { 732 *sysclk_idx = i; 733 *dac_idx = j; 734 *bclk_idx = k; 735 closest = diff; 736 best_freq_out = freq_out; 737 } 738 } 739 } 740 } 741 742 return best_freq_out; 743 } 744 static int wm8960_configure_clocking(struct snd_soc_component *component) 745 { 746 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 747 int freq_out, freq_in; 748 u16 iface1 = snd_soc_component_read32(component, WM8960_IFACE1); 749 int i, j, k; 750 int ret; 751 752 if (!(iface1 & (1<<6))) { 753 dev_dbg(component->dev, 754 "Codec is slave mode, no need to configure clock\n"); 755 return 0; 756 } 757 758 if (wm8960->clk_id != WM8960_SYSCLK_MCLK && !wm8960->freq_in) { 759 dev_err(component->dev, "No MCLK configured\n"); 760 return -EINVAL; 761 } 762 763 freq_in = wm8960->freq_in; 764 /* 765 * If it's sysclk auto mode, check if the MCLK can provide sysclk or 766 * not. If MCLK can provide sysclk, using MCLK to provide sysclk 767 * directly. Otherwise, auto select a available pll out frequency 768 * and set PLL. 769 */ 770 if (wm8960->clk_id == WM8960_SYSCLK_AUTO) { 771 /* disable the PLL and using MCLK to provide sysclk */ 772 wm8960_set_pll(component, 0, 0); 773 freq_out = freq_in; 774 } else if (wm8960->sysclk) { 775 freq_out = wm8960->sysclk; 776 } else { 777 dev_err(component->dev, "No SYSCLK configured\n"); 778 return -EINVAL; 779 } 780 781 if (wm8960->clk_id != WM8960_SYSCLK_PLL) { 782 ret = wm8960_configure_sysclk(wm8960, freq_out, &i, &j, &k); 783 if (ret >= 0) { 784 goto configure_clock; 785 } else if (wm8960->clk_id != WM8960_SYSCLK_AUTO) { 786 dev_err(component->dev, "failed to configure clock\n"); 787 return -EINVAL; 788 } 789 } 790 791 freq_out = wm8960_configure_pll(component, freq_in, &i, &j, &k); 792 if (freq_out < 0) { 793 dev_err(component->dev, "failed to configure clock via PLL\n"); 794 return freq_out; 795 } 796 wm8960_set_pll(component, freq_in, freq_out); 797 798 configure_clock: 799 /* configure sysclk clock */ 800 snd_soc_component_update_bits(component, WM8960_CLOCK1, 3 << 1, i << 1); 801 802 /* configure frame clock */ 803 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 3, j << 3); 804 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 6, j << 6); 805 806 /* configure bit clock */ 807 snd_soc_component_update_bits(component, WM8960_CLOCK2, 0xf, k); 808 809 return 0; 810 } 811 812 static int wm8960_hw_params(struct snd_pcm_substream *substream, 813 struct snd_pcm_hw_params *params, 814 struct snd_soc_dai *dai) 815 { 816 struct snd_soc_component *component = dai->component; 817 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 818 u16 iface = snd_soc_component_read32(component, WM8960_IFACE1) & 0xfff3; 819 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 820 int i; 821 822 wm8960->bclk = snd_soc_params_to_bclk(params); 823 if (params_channels(params) == 1) 824 wm8960->bclk *= 2; 825 826 /* bit size */ 827 switch (params_width(params)) { 828 case 16: 829 break; 830 case 20: 831 iface |= 0x0004; 832 break; 833 case 24: 834 iface |= 0x0008; 835 break; 836 case 32: 837 /* right justify mode does not support 32 word length */ 838 if ((iface & 0x3) != 0) { 839 iface |= 0x000c; 840 break; 841 } 842 default: 843 dev_err(component->dev, "unsupported width %d\n", 844 params_width(params)); 845 return -EINVAL; 846 } 847 848 wm8960->lrclk = params_rate(params); 849 /* Update filters for the new rate */ 850 if (tx) { 851 wm8960_set_deemph(component); 852 } else { 853 for (i = 0; i < ARRAY_SIZE(alc_rates); i++) 854 if (alc_rates[i].rate == params_rate(params)) 855 snd_soc_component_update_bits(component, 856 WM8960_ADDCTL3, 0x7, 857 alc_rates[i].val); 858 } 859 860 /* set iface */ 861 snd_soc_component_write(component, WM8960_IFACE1, iface); 862 863 wm8960->is_stream_in_use[tx] = true; 864 865 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_ON && 866 !wm8960->is_stream_in_use[!tx]) 867 return wm8960_configure_clocking(component); 868 869 return 0; 870 } 871 872 static int wm8960_hw_free(struct snd_pcm_substream *substream, 873 struct snd_soc_dai *dai) 874 { 875 struct snd_soc_component *component = dai->component; 876 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 877 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 878 879 wm8960->is_stream_in_use[tx] = false; 880 881 return 0; 882 } 883 884 static int wm8960_mute(struct snd_soc_dai *dai, int mute) 885 { 886 struct snd_soc_component *component = dai->component; 887 888 if (mute) 889 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0x8); 890 else 891 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0); 892 return 0; 893 } 894 895 static int wm8960_set_bias_level_out3(struct snd_soc_component *component, 896 enum snd_soc_bias_level level) 897 { 898 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 899 u16 pm2 = snd_soc_component_read32(component, WM8960_POWER2); 900 int ret; 901 902 switch (level) { 903 case SND_SOC_BIAS_ON: 904 break; 905 906 case SND_SOC_BIAS_PREPARE: 907 switch (snd_soc_component_get_bias_level(component)) { 908 case SND_SOC_BIAS_STANDBY: 909 if (!IS_ERR(wm8960->mclk)) { 910 ret = clk_prepare_enable(wm8960->mclk); 911 if (ret) { 912 dev_err(component->dev, 913 "Failed to enable MCLK: %d\n", 914 ret); 915 return ret; 916 } 917 } 918 919 ret = wm8960_configure_clocking(component); 920 if (ret) 921 return ret; 922 923 /* Set VMID to 2x50k */ 924 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x80); 925 break; 926 927 case SND_SOC_BIAS_ON: 928 /* 929 * If it's sysclk auto mode, and the pll is enabled, 930 * disable the pll 931 */ 932 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 933 wm8960_set_pll(component, 0, 0); 934 935 if (!IS_ERR(wm8960->mclk)) 936 clk_disable_unprepare(wm8960->mclk); 937 break; 938 939 default: 940 break; 941 } 942 943 break; 944 945 case SND_SOC_BIAS_STANDBY: 946 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 947 regcache_sync(wm8960->regmap); 948 949 /* Enable anti-pop features */ 950 snd_soc_component_write(component, WM8960_APOP1, 951 WM8960_POBCTRL | WM8960_SOFT_ST | 952 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 953 954 /* Enable & ramp VMID at 2x50k */ 955 snd_soc_component_update_bits(component, WM8960_POWER1, 0x80, 0x80); 956 msleep(100); 957 958 /* Enable VREF */ 959 snd_soc_component_update_bits(component, WM8960_POWER1, WM8960_VREF, 960 WM8960_VREF); 961 962 /* Disable anti-pop features */ 963 snd_soc_component_write(component, WM8960_APOP1, WM8960_BUFIOEN); 964 } 965 966 /* Set VMID to 2x250k */ 967 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x100); 968 break; 969 970 case SND_SOC_BIAS_OFF: 971 /* Enable anti-pop features */ 972 snd_soc_component_write(component, WM8960_APOP1, 973 WM8960_POBCTRL | WM8960_SOFT_ST | 974 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 975 976 /* Disable VMID and VREF, let them discharge */ 977 snd_soc_component_write(component, WM8960_POWER1, 0); 978 msleep(600); 979 break; 980 } 981 982 return 0; 983 } 984 985 static int wm8960_set_bias_level_capless(struct snd_soc_component *component, 986 enum snd_soc_bias_level level) 987 { 988 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 989 u16 pm2 = snd_soc_component_read32(component, WM8960_POWER2); 990 int reg, ret; 991 992 switch (level) { 993 case SND_SOC_BIAS_ON: 994 break; 995 996 case SND_SOC_BIAS_PREPARE: 997 switch (snd_soc_component_get_bias_level(component)) { 998 case SND_SOC_BIAS_STANDBY: 999 /* Enable anti pop mode */ 1000 snd_soc_component_update_bits(component, WM8960_APOP1, 1001 WM8960_POBCTRL | WM8960_SOFT_ST | 1002 WM8960_BUFDCOPEN, 1003 WM8960_POBCTRL | WM8960_SOFT_ST | 1004 WM8960_BUFDCOPEN); 1005 1006 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */ 1007 reg = 0; 1008 if (wm8960->lout1 && wm8960->lout1->power) 1009 reg |= WM8960_PWR2_LOUT1; 1010 if (wm8960->rout1 && wm8960->rout1->power) 1011 reg |= WM8960_PWR2_ROUT1; 1012 if (wm8960->out3 && wm8960->out3->power) 1013 reg |= WM8960_PWR2_OUT3; 1014 snd_soc_component_update_bits(component, WM8960_POWER2, 1015 WM8960_PWR2_LOUT1 | 1016 WM8960_PWR2_ROUT1 | 1017 WM8960_PWR2_OUT3, reg); 1018 1019 /* Enable VMID at 2*50k */ 1020 snd_soc_component_update_bits(component, WM8960_POWER1, 1021 WM8960_VMID_MASK, 0x80); 1022 1023 /* Ramp */ 1024 msleep(100); 1025 1026 /* Enable VREF */ 1027 snd_soc_component_update_bits(component, WM8960_POWER1, 1028 WM8960_VREF, WM8960_VREF); 1029 1030 msleep(100); 1031 1032 if (!IS_ERR(wm8960->mclk)) { 1033 ret = clk_prepare_enable(wm8960->mclk); 1034 if (ret) { 1035 dev_err(component->dev, 1036 "Failed to enable MCLK: %d\n", 1037 ret); 1038 return ret; 1039 } 1040 } 1041 1042 ret = wm8960_configure_clocking(component); 1043 if (ret) 1044 return ret; 1045 1046 break; 1047 1048 case SND_SOC_BIAS_ON: 1049 /* 1050 * If it's sysclk auto mode, and the pll is enabled, 1051 * disable the pll 1052 */ 1053 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 1054 wm8960_set_pll(component, 0, 0); 1055 1056 if (!IS_ERR(wm8960->mclk)) 1057 clk_disable_unprepare(wm8960->mclk); 1058 1059 /* Enable anti-pop mode */ 1060 snd_soc_component_update_bits(component, WM8960_APOP1, 1061 WM8960_POBCTRL | WM8960_SOFT_ST | 1062 WM8960_BUFDCOPEN, 1063 WM8960_POBCTRL | WM8960_SOFT_ST | 1064 WM8960_BUFDCOPEN); 1065 1066 /* Disable VMID and VREF */ 1067 snd_soc_component_update_bits(component, WM8960_POWER1, 1068 WM8960_VREF | WM8960_VMID_MASK, 0); 1069 break; 1070 1071 case SND_SOC_BIAS_OFF: 1072 regcache_sync(wm8960->regmap); 1073 break; 1074 default: 1075 break; 1076 } 1077 break; 1078 1079 case SND_SOC_BIAS_STANDBY: 1080 switch (snd_soc_component_get_bias_level(component)) { 1081 case SND_SOC_BIAS_PREPARE: 1082 /* Disable HP discharge */ 1083 snd_soc_component_update_bits(component, WM8960_APOP2, 1084 WM8960_DISOP | WM8960_DRES_MASK, 1085 0); 1086 1087 /* Disable anti-pop features */ 1088 snd_soc_component_update_bits(component, WM8960_APOP1, 1089 WM8960_POBCTRL | WM8960_SOFT_ST | 1090 WM8960_BUFDCOPEN, 1091 WM8960_POBCTRL | WM8960_SOFT_ST | 1092 WM8960_BUFDCOPEN); 1093 break; 1094 1095 default: 1096 break; 1097 } 1098 break; 1099 1100 case SND_SOC_BIAS_OFF: 1101 break; 1102 } 1103 1104 return 0; 1105 } 1106 1107 /* PLL divisors */ 1108 struct _pll_div { 1109 u32 pre_div:1; 1110 u32 n:4; 1111 u32 k:24; 1112 }; 1113 1114 static bool is_pll_freq_available(unsigned int source, unsigned int target) 1115 { 1116 unsigned int Ndiv; 1117 1118 if (source == 0 || target == 0) 1119 return false; 1120 1121 /* Scale up target to PLL operating frequency */ 1122 target *= 4; 1123 Ndiv = target / source; 1124 1125 if (Ndiv < 6) { 1126 source >>= 1; 1127 Ndiv = target / source; 1128 } 1129 1130 if ((Ndiv < 6) || (Ndiv > 12)) 1131 return false; 1132 1133 return true; 1134 } 1135 1136 /* The size in bits of the pll divide multiplied by 10 1137 * to allow rounding later */ 1138 #define FIXED_PLL_SIZE ((1 << 24) * 10) 1139 1140 static int pll_factors(unsigned int source, unsigned int target, 1141 struct _pll_div *pll_div) 1142 { 1143 unsigned long long Kpart; 1144 unsigned int K, Ndiv, Nmod; 1145 1146 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); 1147 1148 /* Scale up target to PLL operating frequency */ 1149 target *= 4; 1150 1151 Ndiv = target / source; 1152 if (Ndiv < 6) { 1153 source >>= 1; 1154 pll_div->pre_div = 1; 1155 Ndiv = target / source; 1156 } else 1157 pll_div->pre_div = 0; 1158 1159 if ((Ndiv < 6) || (Ndiv > 12)) { 1160 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); 1161 return -EINVAL; 1162 } 1163 1164 pll_div->n = Ndiv; 1165 Nmod = target % source; 1166 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 1167 1168 do_div(Kpart, source); 1169 1170 K = Kpart & 0xFFFFFFFF; 1171 1172 /* Check if we need to round */ 1173 if ((K % 10) >= 5) 1174 K += 5; 1175 1176 /* Move down to proper range now rounding is done */ 1177 K /= 10; 1178 1179 pll_div->k = K; 1180 1181 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", 1182 pll_div->n, pll_div->k, pll_div->pre_div); 1183 1184 return 0; 1185 } 1186 1187 static int wm8960_set_pll(struct snd_soc_component *component, 1188 unsigned int freq_in, unsigned int freq_out) 1189 { 1190 u16 reg; 1191 static struct _pll_div pll_div; 1192 int ret; 1193 1194 if (freq_in && freq_out) { 1195 ret = pll_factors(freq_in, freq_out, &pll_div); 1196 if (ret != 0) 1197 return ret; 1198 } 1199 1200 /* Disable the PLL: even if we are changing the frequency the 1201 * PLL needs to be disabled while we do so. */ 1202 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0); 1203 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0); 1204 1205 if (!freq_in || !freq_out) 1206 return 0; 1207 1208 reg = snd_soc_component_read32(component, WM8960_PLL1) & ~0x3f; 1209 reg |= pll_div.pre_div << 4; 1210 reg |= pll_div.n; 1211 1212 if (pll_div.k) { 1213 reg |= 0x20; 1214 1215 snd_soc_component_write(component, WM8960_PLL2, (pll_div.k >> 16) & 0xff); 1216 snd_soc_component_write(component, WM8960_PLL3, (pll_div.k >> 8) & 0xff); 1217 snd_soc_component_write(component, WM8960_PLL4, pll_div.k & 0xff); 1218 } 1219 snd_soc_component_write(component, WM8960_PLL1, reg); 1220 1221 /* Turn it on */ 1222 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0x1); 1223 msleep(250); 1224 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0x1); 1225 1226 return 0; 1227 } 1228 1229 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 1230 int source, unsigned int freq_in, unsigned int freq_out) 1231 { 1232 struct snd_soc_component *component = codec_dai->component; 1233 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1234 1235 wm8960->freq_in = freq_in; 1236 1237 if (pll_id == WM8960_SYSCLK_AUTO) 1238 return 0; 1239 1240 return wm8960_set_pll(component, freq_in, freq_out); 1241 } 1242 1243 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 1244 int div_id, int div) 1245 { 1246 struct snd_soc_component *component = codec_dai->component; 1247 u16 reg; 1248 1249 switch (div_id) { 1250 case WM8960_SYSCLKDIV: 1251 reg = snd_soc_component_read32(component, WM8960_CLOCK1) & 0x1f9; 1252 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1253 break; 1254 case WM8960_DACDIV: 1255 reg = snd_soc_component_read32(component, WM8960_CLOCK1) & 0x1c7; 1256 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1257 break; 1258 case WM8960_OPCLKDIV: 1259 reg = snd_soc_component_read32(component, WM8960_PLL1) & 0x03f; 1260 snd_soc_component_write(component, WM8960_PLL1, reg | div); 1261 break; 1262 case WM8960_DCLKDIV: 1263 reg = snd_soc_component_read32(component, WM8960_CLOCK2) & 0x03f; 1264 snd_soc_component_write(component, WM8960_CLOCK2, reg | div); 1265 break; 1266 case WM8960_TOCLKSEL: 1267 reg = snd_soc_component_read32(component, WM8960_ADDCTL1) & 0x1fd; 1268 snd_soc_component_write(component, WM8960_ADDCTL1, reg | div); 1269 break; 1270 default: 1271 return -EINVAL; 1272 } 1273 1274 return 0; 1275 } 1276 1277 static int wm8960_set_bias_level(struct snd_soc_component *component, 1278 enum snd_soc_bias_level level) 1279 { 1280 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1281 1282 return wm8960->set_bias_level(component, level); 1283 } 1284 1285 static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, 1286 unsigned int freq, int dir) 1287 { 1288 struct snd_soc_component *component = dai->component; 1289 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1290 1291 switch (clk_id) { 1292 case WM8960_SYSCLK_MCLK: 1293 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1294 0x1, WM8960_SYSCLK_MCLK); 1295 break; 1296 case WM8960_SYSCLK_PLL: 1297 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1298 0x1, WM8960_SYSCLK_PLL); 1299 break; 1300 case WM8960_SYSCLK_AUTO: 1301 break; 1302 default: 1303 return -EINVAL; 1304 } 1305 1306 wm8960->sysclk = freq; 1307 wm8960->clk_id = clk_id; 1308 1309 return 0; 1310 } 1311 1312 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 1313 1314 #define WM8960_FORMATS \ 1315 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 1316 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 1317 1318 static const struct snd_soc_dai_ops wm8960_dai_ops = { 1319 .hw_params = wm8960_hw_params, 1320 .hw_free = wm8960_hw_free, 1321 .digital_mute = wm8960_mute, 1322 .set_fmt = wm8960_set_dai_fmt, 1323 .set_clkdiv = wm8960_set_dai_clkdiv, 1324 .set_pll = wm8960_set_dai_pll, 1325 .set_sysclk = wm8960_set_dai_sysclk, 1326 }; 1327 1328 static struct snd_soc_dai_driver wm8960_dai = { 1329 .name = "wm8960-hifi", 1330 .playback = { 1331 .stream_name = "Playback", 1332 .channels_min = 1, 1333 .channels_max = 2, 1334 .rates = WM8960_RATES, 1335 .formats = WM8960_FORMATS,}, 1336 .capture = { 1337 .stream_name = "Capture", 1338 .channels_min = 1, 1339 .channels_max = 2, 1340 .rates = WM8960_RATES, 1341 .formats = WM8960_FORMATS,}, 1342 .ops = &wm8960_dai_ops, 1343 .symmetric_rates = 1, 1344 }; 1345 1346 static int wm8960_probe(struct snd_soc_component *component) 1347 { 1348 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1349 struct wm8960_data *pdata = &wm8960->pdata; 1350 1351 if (pdata->capless) 1352 wm8960->set_bias_level = wm8960_set_bias_level_capless; 1353 else 1354 wm8960->set_bias_level = wm8960_set_bias_level_out3; 1355 1356 snd_soc_add_component_controls(component, wm8960_snd_controls, 1357 ARRAY_SIZE(wm8960_snd_controls)); 1358 wm8960_add_widgets(component); 1359 1360 return 0; 1361 } 1362 1363 static const struct snd_soc_component_driver soc_component_dev_wm8960 = { 1364 .probe = wm8960_probe, 1365 .set_bias_level = wm8960_set_bias_level, 1366 .suspend_bias_off = 1, 1367 .idle_bias_on = 1, 1368 .use_pmdown_time = 1, 1369 .endianness = 1, 1370 .non_legacy_dai_naming = 1, 1371 }; 1372 1373 static const struct regmap_config wm8960_regmap = { 1374 .reg_bits = 7, 1375 .val_bits = 9, 1376 .max_register = WM8960_PLL4, 1377 1378 .reg_defaults = wm8960_reg_defaults, 1379 .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults), 1380 .cache_type = REGCACHE_RBTREE, 1381 1382 .volatile_reg = wm8960_volatile, 1383 }; 1384 1385 static void wm8960_set_pdata_from_of(struct i2c_client *i2c, 1386 struct wm8960_data *pdata) 1387 { 1388 const struct device_node *np = i2c->dev.of_node; 1389 1390 if (of_property_read_bool(np, "wlf,capless")) 1391 pdata->capless = true; 1392 1393 if (of_property_read_bool(np, "wlf,shared-lrclk")) 1394 pdata->shared_lrclk = true; 1395 } 1396 1397 static int wm8960_i2c_probe(struct i2c_client *i2c, 1398 const struct i2c_device_id *id) 1399 { 1400 struct wm8960_data *pdata = dev_get_platdata(&i2c->dev); 1401 struct wm8960_priv *wm8960; 1402 int ret; 1403 1404 wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv), 1405 GFP_KERNEL); 1406 if (wm8960 == NULL) 1407 return -ENOMEM; 1408 1409 wm8960->mclk = devm_clk_get(&i2c->dev, "mclk"); 1410 if (IS_ERR(wm8960->mclk)) { 1411 if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER) 1412 return -EPROBE_DEFER; 1413 } 1414 1415 wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap); 1416 if (IS_ERR(wm8960->regmap)) 1417 return PTR_ERR(wm8960->regmap); 1418 1419 if (pdata) 1420 memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data)); 1421 else if (i2c->dev.of_node) 1422 wm8960_set_pdata_from_of(i2c, &wm8960->pdata); 1423 1424 ret = wm8960_reset(wm8960->regmap); 1425 if (ret != 0) { 1426 dev_err(&i2c->dev, "Failed to issue reset\n"); 1427 return ret; 1428 } 1429 1430 if (wm8960->pdata.shared_lrclk) { 1431 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 1432 0x4, 0x4); 1433 if (ret != 0) { 1434 dev_err(&i2c->dev, "Failed to enable LRCM: %d\n", 1435 ret); 1436 return ret; 1437 } 1438 } 1439 1440 /* Latch the update bits */ 1441 regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100); 1442 regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100); 1443 regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100); 1444 regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100); 1445 regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100); 1446 regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100); 1447 regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100); 1448 regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100); 1449 regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100); 1450 regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100); 1451 1452 i2c_set_clientdata(i2c, wm8960); 1453 1454 ret = devm_snd_soc_register_component(&i2c->dev, 1455 &soc_component_dev_wm8960, &wm8960_dai, 1); 1456 1457 return ret; 1458 } 1459 1460 static int wm8960_i2c_remove(struct i2c_client *client) 1461 { 1462 return 0; 1463 } 1464 1465 static const struct i2c_device_id wm8960_i2c_id[] = { 1466 { "wm8960", 0 }, 1467 { } 1468 }; 1469 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); 1470 1471 static const struct of_device_id wm8960_of_match[] = { 1472 { .compatible = "wlf,wm8960", }, 1473 { } 1474 }; 1475 MODULE_DEVICE_TABLE(of, wm8960_of_match); 1476 1477 static struct i2c_driver wm8960_i2c_driver = { 1478 .driver = { 1479 .name = "wm8960", 1480 .of_match_table = wm8960_of_match, 1481 }, 1482 .probe = wm8960_i2c_probe, 1483 .remove = wm8960_i2c_remove, 1484 .id_table = wm8960_i2c_id, 1485 }; 1486 1487 module_i2c_driver(wm8960_i2c_driver); 1488 1489 MODULE_DESCRIPTION("ASoC WM8960 driver"); 1490 MODULE_AUTHOR("Liam Girdwood"); 1491 MODULE_LICENSE("GPL"); 1492