1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * wm8960.c -- WM8960 ALSA SoC Audio driver 4 * 5 * Copyright 2007-11 Wolfson Microelectronics, plc 6 * 7 * Author: Liam Girdwood 8 */ 9 10 #include <linux/module.h> 11 #include <linux/moduleparam.h> 12 #include <linux/init.h> 13 #include <linux/delay.h> 14 #include <linux/pm.h> 15 #include <linux/clk.h> 16 #include <linux/i2c.h> 17 #include <linux/acpi.h> 18 #include <linux/slab.h> 19 #include <sound/core.h> 20 #include <sound/pcm.h> 21 #include <sound/pcm_params.h> 22 #include <sound/soc.h> 23 #include <sound/initval.h> 24 #include <sound/tlv.h> 25 #include <sound/wm8960.h> 26 27 #include "wm8960.h" 28 29 /* R25 - Power 1 */ 30 #define WM8960_VMID_MASK 0x180 31 #define WM8960_VREF 0x40 32 33 /* R26 - Power 2 */ 34 #define WM8960_PWR2_LOUT1 0x40 35 #define WM8960_PWR2_ROUT1 0x20 36 #define WM8960_PWR2_OUT3 0x02 37 38 /* R28 - Anti-pop 1 */ 39 #define WM8960_POBCTRL 0x80 40 #define WM8960_BUFDCOPEN 0x10 41 #define WM8960_BUFIOEN 0x08 42 #define WM8960_SOFT_ST 0x04 43 #define WM8960_HPSTBY 0x01 44 45 /* R29 - Anti-pop 2 */ 46 #define WM8960_DISOP 0x40 47 #define WM8960_DRES_MASK 0x30 48 49 #define WM8960_DSCH_TOUT 600 /* discharge timeout, ms */ 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 ktime_t dsch_start; 140 }; 141 142 #define wm8960_reset(c) regmap_write(c, WM8960_RESET, 0) 143 144 /* enumerated controls */ 145 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", 146 "Right Inverted", "Stereo Inversion"}; 147 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; 148 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; 149 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; 150 static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; 151 static const char *wm8960_adc_data_output_sel[] = { 152 "Left Data = Left ADC; Right Data = Right ADC", 153 "Left Data = Left ADC; Right Data = Left ADC", 154 "Left Data = Right ADC; Right Data = Right ADC", 155 "Left Data = Right ADC; Right Data = Left ADC", 156 }; 157 static const char *wm8960_dmonomix[] = {"Stereo", "Mono"}; 158 159 static const struct soc_enum wm8960_enum[] = { 160 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), 161 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), 162 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), 163 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), 164 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), 165 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), 166 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 2, 4, wm8960_adc_data_output_sel), 167 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 4, 2, wm8960_dmonomix), 168 }; 169 170 static const int deemph_settings[] = { 0, 32000, 44100, 48000 }; 171 172 static int wm8960_set_deemph(struct snd_soc_component *component) 173 { 174 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 175 int val, i, best; 176 177 /* If we're using deemphasis select the nearest available sample 178 * rate. 179 */ 180 if (wm8960->deemph) { 181 best = 1; 182 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) { 183 if (abs(deemph_settings[i] - wm8960->lrclk) < 184 abs(deemph_settings[best] - wm8960->lrclk)) 185 best = i; 186 } 187 188 val = best << 1; 189 } else { 190 val = 0; 191 } 192 193 dev_dbg(component->dev, "Set deemphasis %d\n", val); 194 195 return snd_soc_component_update_bits(component, WM8960_DACCTL1, 196 0x6, val); 197 } 198 199 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol, 200 struct snd_ctl_elem_value *ucontrol) 201 { 202 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 203 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 204 205 ucontrol->value.integer.value[0] = wm8960->deemph; 206 return 0; 207 } 208 209 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol, 210 struct snd_ctl_elem_value *ucontrol) 211 { 212 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 213 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 214 unsigned int deemph = ucontrol->value.integer.value[0]; 215 216 if (deemph > 1) 217 return -EINVAL; 218 219 wm8960->deemph = deemph; 220 221 return wm8960_set_deemph(component); 222 } 223 224 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); 225 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1725, 75, 0); 226 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 227 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); 228 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 229 static const DECLARE_TLV_DB_SCALE(lineinboost_tlv, -1500, 300, 1); 230 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(micboost_tlv, 231 0, 1, TLV_DB_SCALE_ITEM(0, 1300, 0), 232 2, 3, TLV_DB_SCALE_ITEM(2000, 900, 0), 233 ); 234 235 static const struct snd_kcontrol_new wm8960_snd_controls[] = { 236 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, 237 0, 63, 0, inpga_tlv), 238 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, 239 6, 1, 0), 240 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, 241 7, 1, 1), 242 243 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume", 244 WM8960_INBMIX1, 4, 7, 0, lineinboost_tlv), 245 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume", 246 WM8960_INBMIX1, 1, 7, 0, lineinboost_tlv), 247 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume", 248 WM8960_INBMIX2, 4, 7, 0, lineinboost_tlv), 249 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume", 250 WM8960_INBMIX2, 1, 7, 0, lineinboost_tlv), 251 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT1 Volume", 252 WM8960_RINPATH, 4, 3, 0, micboost_tlv), 253 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT1 Volume", 254 WM8960_LINPATH, 4, 3, 0, micboost_tlv), 255 256 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, 257 0, 255, 0, dac_tlv), 258 259 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, 260 0, 127, 0, out_tlv), 261 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, 262 7, 1, 0), 263 264 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, 265 0, 127, 0, out_tlv), 266 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, 267 7, 1, 0), 268 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), 269 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), 270 271 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), 272 SOC_ENUM("ADC Polarity", wm8960_enum[0]), 273 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), 274 275 SOC_ENUM("DAC Polarity", wm8960_enum[1]), 276 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, 277 wm8960_get_deemph, wm8960_put_deemph), 278 279 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]), 280 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]), 281 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), 282 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), 283 284 SOC_ENUM("ALC Function", wm8960_enum[4]), 285 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), 286 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), 287 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), 288 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), 289 SOC_ENUM("ALC Mode", wm8960_enum[5]), 290 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), 291 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), 292 293 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), 294 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), 295 296 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC, 297 0, 255, 0, adc_tlv), 298 299 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", 300 WM8960_BYPASS1, 4, 7, 1, bypass_tlv), 301 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", 302 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), 303 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", 304 WM8960_BYPASS2, 4, 7, 1, bypass_tlv), 305 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", 306 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), 307 308 SOC_ENUM("ADC Data Output Select", wm8960_enum[6]), 309 SOC_ENUM("DAC Mono Mix", wm8960_enum[7]), 310 }; 311 312 static const struct snd_kcontrol_new wm8960_lin_boost[] = { 313 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), 314 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), 315 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), 316 }; 317 318 static const struct snd_kcontrol_new wm8960_lin[] = { 319 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), 320 }; 321 322 static const struct snd_kcontrol_new wm8960_rin_boost[] = { 323 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), 324 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), 325 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), 326 }; 327 328 static const struct snd_kcontrol_new wm8960_rin[] = { 329 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), 330 }; 331 332 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { 333 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), 334 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), 335 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), 336 }; 337 338 static const struct snd_kcontrol_new wm8960_routput_mixer[] = { 339 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), 340 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), 341 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), 342 }; 343 344 static const struct snd_kcontrol_new wm8960_mono_out[] = { 345 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), 346 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), 347 }; 348 349 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { 350 SND_SOC_DAPM_INPUT("LINPUT1"), 351 SND_SOC_DAPM_INPUT("RINPUT1"), 352 SND_SOC_DAPM_INPUT("LINPUT2"), 353 SND_SOC_DAPM_INPUT("RINPUT2"), 354 SND_SOC_DAPM_INPUT("LINPUT3"), 355 SND_SOC_DAPM_INPUT("RINPUT3"), 356 357 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0), 358 359 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, 360 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), 361 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, 362 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), 363 364 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, 365 wm8960_lin, ARRAY_SIZE(wm8960_lin)), 366 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, 367 wm8960_rin, ARRAY_SIZE(wm8960_rin)), 368 369 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0), 370 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0), 371 372 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), 373 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), 374 375 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, 376 &wm8960_loutput_mixer[0], 377 ARRAY_SIZE(wm8960_loutput_mixer)), 378 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, 379 &wm8960_routput_mixer[0], 380 ARRAY_SIZE(wm8960_routput_mixer)), 381 382 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), 383 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), 384 385 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), 386 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), 387 388 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), 389 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), 390 391 SND_SOC_DAPM_OUTPUT("SPK_LP"), 392 SND_SOC_DAPM_OUTPUT("SPK_LN"), 393 SND_SOC_DAPM_OUTPUT("HP_L"), 394 SND_SOC_DAPM_OUTPUT("HP_R"), 395 SND_SOC_DAPM_OUTPUT("SPK_RP"), 396 SND_SOC_DAPM_OUTPUT("SPK_RN"), 397 SND_SOC_DAPM_OUTPUT("OUT3"), 398 }; 399 400 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = { 401 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, 402 &wm8960_mono_out[0], 403 ARRAY_SIZE(wm8960_mono_out)), 404 }; 405 406 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */ 407 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = { 408 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0), 409 }; 410 411 static const struct snd_soc_dapm_route audio_paths[] = { 412 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, 413 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, 414 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, 415 416 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer" }, 417 { "Left Input Mixer", "Boost Switch", "LINPUT1" }, /* Really Boost Switch */ 418 { "Left Input Mixer", NULL, "LINPUT2" }, 419 { "Left Input Mixer", NULL, "LINPUT3" }, 420 421 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, 422 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, 423 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, 424 425 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer" }, 426 { "Right Input Mixer", "Boost Switch", "RINPUT1" }, /* Really Boost Switch */ 427 { "Right Input Mixer", NULL, "RINPUT2" }, 428 { "Right Input Mixer", NULL, "RINPUT3" }, 429 430 { "Left ADC", NULL, "Left Input Mixer" }, 431 { "Right ADC", NULL, "Right Input Mixer" }, 432 433 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, 434 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer" }, 435 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, 436 437 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, 438 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" }, 439 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, 440 441 { "LOUT1 PGA", NULL, "Left Output Mixer" }, 442 { "ROUT1 PGA", NULL, "Right Output Mixer" }, 443 444 { "HP_L", NULL, "LOUT1 PGA" }, 445 { "HP_R", NULL, "ROUT1 PGA" }, 446 447 { "Left Speaker PGA", NULL, "Left Output Mixer" }, 448 { "Right Speaker PGA", NULL, "Right Output Mixer" }, 449 450 { "Left Speaker Output", NULL, "Left Speaker PGA" }, 451 { "Right Speaker Output", NULL, "Right Speaker PGA" }, 452 453 { "SPK_LN", NULL, "Left Speaker Output" }, 454 { "SPK_LP", NULL, "Left Speaker Output" }, 455 { "SPK_RN", NULL, "Right Speaker Output" }, 456 { "SPK_RP", NULL, "Right Speaker Output" }, 457 }; 458 459 static const struct snd_soc_dapm_route audio_paths_out3[] = { 460 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, 461 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, 462 463 { "OUT3", NULL, "Mono Output Mixer", } 464 }; 465 466 static const struct snd_soc_dapm_route audio_paths_capless[] = { 467 { "HP_L", NULL, "OUT3 VMID" }, 468 { "HP_R", NULL, "OUT3 VMID" }, 469 470 { "OUT3 VMID", NULL, "Left Output Mixer" }, 471 { "OUT3 VMID", NULL, "Right Output Mixer" }, 472 }; 473 474 static int wm8960_add_widgets(struct snd_soc_component *component) 475 { 476 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 477 struct wm8960_data *pdata = &wm8960->pdata; 478 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 479 struct snd_soc_dapm_widget *w; 480 481 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets, 482 ARRAY_SIZE(wm8960_dapm_widgets)); 483 484 snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths)); 485 486 /* In capless mode OUT3 is used to provide VMID for the 487 * headphone outputs, otherwise it is used as a mono mixer. 488 */ 489 if (pdata && pdata->capless) { 490 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless, 491 ARRAY_SIZE(wm8960_dapm_widgets_capless)); 492 493 snd_soc_dapm_add_routes(dapm, audio_paths_capless, 494 ARRAY_SIZE(audio_paths_capless)); 495 } else { 496 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3, 497 ARRAY_SIZE(wm8960_dapm_widgets_out3)); 498 499 snd_soc_dapm_add_routes(dapm, audio_paths_out3, 500 ARRAY_SIZE(audio_paths_out3)); 501 } 502 503 /* We need to power up the headphone output stage out of 504 * sequence for capless mode. To save scanning the widget 505 * list each time to find the desired power state do so now 506 * and save the result. 507 */ 508 list_for_each_entry(w, &component->card->widgets, list) { 509 if (w->dapm != dapm) 510 continue; 511 if (strcmp(w->name, "LOUT1 PGA") == 0) 512 wm8960->lout1 = w; 513 if (strcmp(w->name, "ROUT1 PGA") == 0) 514 wm8960->rout1 = w; 515 if (strcmp(w->name, "OUT3 VMID") == 0) 516 wm8960->out3 = w; 517 } 518 519 return 0; 520 } 521 522 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, 523 unsigned int fmt) 524 { 525 struct snd_soc_component *component = codec_dai->component; 526 u16 iface = 0; 527 528 /* set master/slave audio interface */ 529 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 530 case SND_SOC_DAIFMT_CBM_CFM: 531 iface |= 0x0040; 532 break; 533 case SND_SOC_DAIFMT_CBS_CFS: 534 break; 535 default: 536 return -EINVAL; 537 } 538 539 /* interface format */ 540 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 541 case SND_SOC_DAIFMT_I2S: 542 iface |= 0x0002; 543 break; 544 case SND_SOC_DAIFMT_RIGHT_J: 545 break; 546 case SND_SOC_DAIFMT_LEFT_J: 547 iface |= 0x0001; 548 break; 549 case SND_SOC_DAIFMT_DSP_A: 550 iface |= 0x0003; 551 break; 552 case SND_SOC_DAIFMT_DSP_B: 553 iface |= 0x0013; 554 break; 555 default: 556 return -EINVAL; 557 } 558 559 /* clock inversion */ 560 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 561 case SND_SOC_DAIFMT_NB_NF: 562 break; 563 case SND_SOC_DAIFMT_IB_IF: 564 iface |= 0x0090; 565 break; 566 case SND_SOC_DAIFMT_IB_NF: 567 iface |= 0x0080; 568 break; 569 case SND_SOC_DAIFMT_NB_IF: 570 iface |= 0x0010; 571 break; 572 default: 573 return -EINVAL; 574 } 575 576 /* set iface */ 577 snd_soc_component_write(component, WM8960_IFACE1, iface); 578 return 0; 579 } 580 581 static struct { 582 int rate; 583 unsigned int val; 584 } alc_rates[] = { 585 { 48000, 0 }, 586 { 44100, 0 }, 587 { 32000, 1 }, 588 { 22050, 2 }, 589 { 24000, 2 }, 590 { 16000, 3 }, 591 { 11025, 4 }, 592 { 12000, 4 }, 593 { 8000, 5 }, 594 }; 595 596 /* -1 for reserved value */ 597 static const int sysclk_divs[] = { 1, -1, 2, -1 }; 598 599 /* Multiply 256 for internal 256 div */ 600 static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 }; 601 602 /* Multiply 10 to eliminate decimials */ 603 static const int bclk_divs[] = { 604 10, 15, 20, 30, 40, 55, 60, 80, 110, 605 120, 160, 220, 240, 320, 320, 320 606 }; 607 608 /** 609 * wm8960_configure_sysclk - checks if there is a sysclk frequency available 610 * The sysclk must be chosen such that: 611 * - sysclk = MCLK / sysclk_divs 612 * - lrclk = sysclk / dac_divs 613 * - 10 * bclk = sysclk / bclk_divs 614 * 615 * @wm8960: codec private data 616 * @mclk: MCLK used to derive sysclk 617 * @sysclk_idx: sysclk_divs index for found sysclk 618 * @dac_idx: dac_divs index for found lrclk 619 * @bclk_idx: bclk_divs index for found bclk 620 * 621 * Returns: 622 * -1, in case no sysclk frequency available found 623 * >=0, in case we could derive bclk and lrclk from sysclk using 624 * (@sysclk_idx, @dac_idx, @bclk_idx) dividers 625 */ 626 static 627 int wm8960_configure_sysclk(struct wm8960_priv *wm8960, int mclk, 628 int *sysclk_idx, int *dac_idx, int *bclk_idx) 629 { 630 int sysclk, bclk, lrclk; 631 int i, j, k; 632 int diff; 633 634 /* marker for no match */ 635 *bclk_idx = -1; 636 637 bclk = wm8960->bclk; 638 lrclk = wm8960->lrclk; 639 640 /* check if the sysclk frequency is available. */ 641 for (i = 0; i < ARRAY_SIZE(sysclk_divs); ++i) { 642 if (sysclk_divs[i] == -1) 643 continue; 644 sysclk = mclk / sysclk_divs[i]; 645 for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) { 646 if (sysclk != dac_divs[j] * lrclk) 647 continue; 648 for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) { 649 diff = sysclk - bclk * bclk_divs[k] / 10; 650 if (diff == 0) { 651 *sysclk_idx = i; 652 *dac_idx = j; 653 *bclk_idx = k; 654 break; 655 } 656 } 657 if (k != ARRAY_SIZE(bclk_divs)) 658 break; 659 } 660 if (j != ARRAY_SIZE(dac_divs)) 661 break; 662 } 663 return *bclk_idx; 664 } 665 666 /** 667 * wm8960_configure_pll - checks if there is a PLL out frequency available 668 * The PLL out frequency must be chosen such that: 669 * - sysclk = lrclk * dac_divs 670 * - freq_out = sysclk * sysclk_divs 671 * - 10 * sysclk = bclk * bclk_divs 672 * 673 * If we cannot find an exact match for (sysclk, lrclk, bclk) 674 * triplet, we relax the bclk such that bclk is chosen as the 675 * closest available frequency greater than expected bclk. 676 * 677 * @component: component structure 678 * @freq_in: input frequency used to derive freq out via PLL 679 * @sysclk_idx: sysclk_divs index for found sysclk 680 * @dac_idx: dac_divs index for found lrclk 681 * @bclk_idx: bclk_divs index for found bclk 682 * 683 * Returns: 684 * < 0, in case no PLL frequency out available was found 685 * >=0, in case we could derive bclk, lrclk, sysclk from PLL out using 686 * (@sysclk_idx, @dac_idx, @bclk_idx) dividers 687 */ 688 static 689 int wm8960_configure_pll(struct snd_soc_component *component, int freq_in, 690 int *sysclk_idx, int *dac_idx, int *bclk_idx) 691 { 692 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 693 int sysclk, bclk, lrclk, freq_out; 694 int diff, closest, best_freq_out; 695 int i, j, k; 696 697 bclk = wm8960->bclk; 698 lrclk = wm8960->lrclk; 699 closest = freq_in; 700 701 best_freq_out = -EINVAL; 702 *sysclk_idx = *dac_idx = *bclk_idx = -1; 703 704 /* 705 * From Datasheet, the PLL performs best when f2 is between 706 * 90MHz and 100MHz, the desired sysclk output is 11.2896MHz 707 * or 12.288MHz, then sysclkdiv = 2 is the best choice. 708 * So search sysclk_divs from 2 to 1 other than from 1 to 2. 709 */ 710 for (i = ARRAY_SIZE(sysclk_divs) - 1; i >= 0; --i) { 711 if (sysclk_divs[i] == -1) 712 continue; 713 for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) { 714 sysclk = lrclk * dac_divs[j]; 715 freq_out = sysclk * sysclk_divs[i]; 716 717 for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) { 718 if (!is_pll_freq_available(freq_in, freq_out)) 719 continue; 720 721 diff = sysclk - bclk * bclk_divs[k] / 10; 722 if (diff == 0) { 723 *sysclk_idx = i; 724 *dac_idx = j; 725 *bclk_idx = k; 726 return freq_out; 727 } 728 if (diff > 0 && closest > diff) { 729 *sysclk_idx = i; 730 *dac_idx = j; 731 *bclk_idx = k; 732 closest = diff; 733 best_freq_out = freq_out; 734 } 735 } 736 } 737 } 738 739 return best_freq_out; 740 } 741 static int wm8960_configure_clocking(struct snd_soc_component *component) 742 { 743 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 744 int freq_out, freq_in; 745 u16 iface1 = snd_soc_component_read(component, WM8960_IFACE1); 746 int i, j, k; 747 int ret; 748 749 /* 750 * For Slave mode clocking should still be configured, 751 * so this if statement should be removed, but some platform 752 * may not work if the sysclk is not configured, to avoid such 753 * compatible issue, just add '!wm8960->sysclk' condition in 754 * this if statement. 755 */ 756 if (!(iface1 & (1 << 6)) && !wm8960->sysclk) { 757 dev_warn(component->dev, 758 "slave mode, but proceeding with no clock configuration\n"); 759 return 0; 760 } 761 762 if (wm8960->clk_id != WM8960_SYSCLK_MCLK && !wm8960->freq_in) { 763 dev_err(component->dev, "No MCLK configured\n"); 764 return -EINVAL; 765 } 766 767 freq_in = wm8960->freq_in; 768 /* 769 * If it's sysclk auto mode, check if the MCLK can provide sysclk or 770 * not. If MCLK can provide sysclk, using MCLK to provide sysclk 771 * directly. Otherwise, auto select a available pll out frequency 772 * and set PLL. 773 */ 774 if (wm8960->clk_id == WM8960_SYSCLK_AUTO) { 775 /* disable the PLL and using MCLK to provide sysclk */ 776 wm8960_set_pll(component, 0, 0); 777 freq_out = freq_in; 778 } else if (wm8960->sysclk) { 779 freq_out = wm8960->sysclk; 780 } else { 781 dev_err(component->dev, "No SYSCLK configured\n"); 782 return -EINVAL; 783 } 784 785 if (wm8960->clk_id != WM8960_SYSCLK_PLL) { 786 ret = wm8960_configure_sysclk(wm8960, freq_out, &i, &j, &k); 787 if (ret >= 0) { 788 goto configure_clock; 789 } else if (wm8960->clk_id != WM8960_SYSCLK_AUTO) { 790 dev_err(component->dev, "failed to configure clock\n"); 791 return -EINVAL; 792 } 793 } 794 795 freq_out = wm8960_configure_pll(component, freq_in, &i, &j, &k); 796 if (freq_out < 0) { 797 dev_err(component->dev, "failed to configure clock via PLL\n"); 798 return freq_out; 799 } 800 wm8960_set_pll(component, freq_in, freq_out); 801 802 configure_clock: 803 /* configure sysclk clock */ 804 snd_soc_component_update_bits(component, WM8960_CLOCK1, 3 << 1, i << 1); 805 806 /* configure frame clock */ 807 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 3, j << 3); 808 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 6, j << 6); 809 810 /* configure bit clock */ 811 snd_soc_component_update_bits(component, WM8960_CLOCK2, 0xf, k); 812 813 return 0; 814 } 815 816 static int wm8960_hw_params(struct snd_pcm_substream *substream, 817 struct snd_pcm_hw_params *params, 818 struct snd_soc_dai *dai) 819 { 820 struct snd_soc_component *component = dai->component; 821 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 822 u16 iface = snd_soc_component_read(component, WM8960_IFACE1) & 0xfff3; 823 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 824 int i; 825 826 wm8960->bclk = snd_soc_params_to_bclk(params); 827 if (params_channels(params) == 1) 828 wm8960->bclk *= 2; 829 830 /* bit size */ 831 switch (params_width(params)) { 832 case 16: 833 break; 834 case 20: 835 iface |= 0x0004; 836 break; 837 case 24: 838 iface |= 0x0008; 839 break; 840 case 32: 841 /* right justify mode does not support 32 word length */ 842 if ((iface & 0x3) != 0) { 843 iface |= 0x000c; 844 break; 845 } 846 fallthrough; 847 default: 848 dev_err(component->dev, "unsupported width %d\n", 849 params_width(params)); 850 return -EINVAL; 851 } 852 853 wm8960->lrclk = params_rate(params); 854 /* Update filters for the new rate */ 855 if (tx) { 856 wm8960_set_deemph(component); 857 } else { 858 for (i = 0; i < ARRAY_SIZE(alc_rates); i++) 859 if (alc_rates[i].rate == params_rate(params)) 860 snd_soc_component_update_bits(component, 861 WM8960_ADDCTL3, 0x7, 862 alc_rates[i].val); 863 } 864 865 /* set iface */ 866 snd_soc_component_write(component, WM8960_IFACE1, iface); 867 868 wm8960->is_stream_in_use[tx] = true; 869 870 if (!wm8960->is_stream_in_use[!tx]) 871 return wm8960_configure_clocking(component); 872 873 return 0; 874 } 875 876 static int wm8960_hw_free(struct snd_pcm_substream *substream, 877 struct snd_soc_dai *dai) 878 { 879 struct snd_soc_component *component = dai->component; 880 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 881 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 882 883 wm8960->is_stream_in_use[tx] = false; 884 885 return 0; 886 } 887 888 static int wm8960_mute(struct snd_soc_dai *dai, int mute, int direction) 889 { 890 struct snd_soc_component *component = dai->component; 891 892 if (mute) 893 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0x8); 894 else 895 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0); 896 return 0; 897 } 898 899 static int wm8960_set_bias_level_out3(struct snd_soc_component *component, 900 enum snd_soc_bias_level level) 901 { 902 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 903 u16 pm2 = snd_soc_component_read(component, WM8960_POWER2); 904 int ret; 905 ktime_t tout; 906 907 switch (level) { 908 case SND_SOC_BIAS_ON: 909 break; 910 911 case SND_SOC_BIAS_PREPARE: 912 switch (snd_soc_component_get_bias_level(component)) { 913 case SND_SOC_BIAS_STANDBY: 914 if (!IS_ERR(wm8960->mclk)) { 915 ret = clk_prepare_enable(wm8960->mclk); 916 if (ret) { 917 dev_err(component->dev, 918 "Failed to enable MCLK: %d\n", 919 ret); 920 return ret; 921 } 922 } 923 924 ret = wm8960_configure_clocking(component); 925 if (ret) 926 return ret; 927 928 /* Set VMID to 2x50k */ 929 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x80); 930 break; 931 932 case SND_SOC_BIAS_ON: 933 /* 934 * If it's sysclk auto mode, and the pll is enabled, 935 * disable the pll 936 */ 937 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 938 wm8960_set_pll(component, 0, 0); 939 940 if (!IS_ERR(wm8960->mclk)) 941 clk_disable_unprepare(wm8960->mclk); 942 break; 943 944 default: 945 break; 946 } 947 948 break; 949 950 case SND_SOC_BIAS_STANDBY: 951 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 952 /* ensure discharge is complete */ 953 tout = WM8960_DSCH_TOUT - ktime_ms_delta(ktime_get(), wm8960->dsch_start); 954 if (tout > 0) 955 msleep(tout); 956 957 regcache_sync(wm8960->regmap); 958 959 /* Enable anti-pop features */ 960 snd_soc_component_write(component, WM8960_APOP1, 961 WM8960_POBCTRL | WM8960_SOFT_ST | 962 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 963 964 /* Enable & ramp VMID at 2x50k */ 965 snd_soc_component_update_bits(component, WM8960_POWER1, 0x80, 0x80); 966 msleep(100); 967 968 /* Enable VREF */ 969 snd_soc_component_update_bits(component, WM8960_POWER1, WM8960_VREF, 970 WM8960_VREF); 971 972 /* Disable anti-pop features */ 973 snd_soc_component_write(component, WM8960_APOP1, WM8960_BUFIOEN); 974 } 975 976 /* Set VMID to 2x250k */ 977 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x100); 978 break; 979 980 case SND_SOC_BIAS_OFF: 981 /* Enable anti-pop features */ 982 snd_soc_component_write(component, WM8960_APOP1, 983 WM8960_POBCTRL | WM8960_SOFT_ST | 984 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 985 986 /* Disable VMID and VREF, mark discharge */ 987 snd_soc_component_write(component, WM8960_POWER1, 0); 988 wm8960->dsch_start = ktime_get(); 989 break; 990 } 991 992 return 0; 993 } 994 995 static int wm8960_set_bias_level_capless(struct snd_soc_component *component, 996 enum snd_soc_bias_level level) 997 { 998 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 999 u16 pm2 = snd_soc_component_read(component, WM8960_POWER2); 1000 int reg, ret; 1001 1002 switch (level) { 1003 case SND_SOC_BIAS_ON: 1004 break; 1005 1006 case SND_SOC_BIAS_PREPARE: 1007 switch (snd_soc_component_get_bias_level(component)) { 1008 case SND_SOC_BIAS_STANDBY: 1009 /* Enable anti pop mode */ 1010 snd_soc_component_update_bits(component, WM8960_APOP1, 1011 WM8960_POBCTRL | WM8960_SOFT_ST | 1012 WM8960_BUFDCOPEN, 1013 WM8960_POBCTRL | WM8960_SOFT_ST | 1014 WM8960_BUFDCOPEN); 1015 1016 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */ 1017 reg = 0; 1018 if (wm8960->lout1 && wm8960->lout1->power) 1019 reg |= WM8960_PWR2_LOUT1; 1020 if (wm8960->rout1 && wm8960->rout1->power) 1021 reg |= WM8960_PWR2_ROUT1; 1022 if (wm8960->out3 && wm8960->out3->power) 1023 reg |= WM8960_PWR2_OUT3; 1024 snd_soc_component_update_bits(component, WM8960_POWER2, 1025 WM8960_PWR2_LOUT1 | 1026 WM8960_PWR2_ROUT1 | 1027 WM8960_PWR2_OUT3, reg); 1028 1029 /* Enable VMID at 2*50k */ 1030 snd_soc_component_update_bits(component, WM8960_POWER1, 1031 WM8960_VMID_MASK, 0x80); 1032 1033 /* Ramp */ 1034 msleep(100); 1035 1036 /* Enable VREF */ 1037 snd_soc_component_update_bits(component, WM8960_POWER1, 1038 WM8960_VREF, WM8960_VREF); 1039 1040 msleep(100); 1041 1042 if (!IS_ERR(wm8960->mclk)) { 1043 ret = clk_prepare_enable(wm8960->mclk); 1044 if (ret) { 1045 dev_err(component->dev, 1046 "Failed to enable MCLK: %d\n", 1047 ret); 1048 return ret; 1049 } 1050 } 1051 1052 ret = wm8960_configure_clocking(component); 1053 if (ret) 1054 return ret; 1055 1056 break; 1057 1058 case SND_SOC_BIAS_ON: 1059 /* 1060 * If it's sysclk auto mode, and the pll is enabled, 1061 * disable the pll 1062 */ 1063 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 1064 wm8960_set_pll(component, 0, 0); 1065 1066 if (!IS_ERR(wm8960->mclk)) 1067 clk_disable_unprepare(wm8960->mclk); 1068 1069 /* Enable anti-pop mode */ 1070 snd_soc_component_update_bits(component, WM8960_APOP1, 1071 WM8960_POBCTRL | WM8960_SOFT_ST | 1072 WM8960_BUFDCOPEN, 1073 WM8960_POBCTRL | WM8960_SOFT_ST | 1074 WM8960_BUFDCOPEN); 1075 1076 /* Disable VMID and VREF */ 1077 snd_soc_component_update_bits(component, WM8960_POWER1, 1078 WM8960_VREF | WM8960_VMID_MASK, 0); 1079 break; 1080 1081 case SND_SOC_BIAS_OFF: 1082 regcache_sync(wm8960->regmap); 1083 break; 1084 default: 1085 break; 1086 } 1087 break; 1088 1089 case SND_SOC_BIAS_STANDBY: 1090 switch (snd_soc_component_get_bias_level(component)) { 1091 case SND_SOC_BIAS_PREPARE: 1092 /* Disable HP discharge */ 1093 snd_soc_component_update_bits(component, WM8960_APOP2, 1094 WM8960_DISOP | WM8960_DRES_MASK, 1095 0); 1096 1097 /* Disable anti-pop features */ 1098 snd_soc_component_update_bits(component, WM8960_APOP1, 1099 WM8960_POBCTRL | WM8960_SOFT_ST | 1100 WM8960_BUFDCOPEN, 1101 WM8960_POBCTRL | WM8960_SOFT_ST | 1102 WM8960_BUFDCOPEN); 1103 break; 1104 1105 default: 1106 break; 1107 } 1108 break; 1109 1110 case SND_SOC_BIAS_OFF: 1111 break; 1112 } 1113 1114 return 0; 1115 } 1116 1117 /* PLL divisors */ 1118 struct _pll_div { 1119 u32 pre_div:1; 1120 u32 n:4; 1121 u32 k:24; 1122 }; 1123 1124 static bool is_pll_freq_available(unsigned int source, unsigned int target) 1125 { 1126 unsigned int Ndiv; 1127 1128 if (source == 0 || target == 0) 1129 return false; 1130 1131 /* Scale up target to PLL operating frequency */ 1132 target *= 4; 1133 Ndiv = target / source; 1134 1135 if (Ndiv < 6) { 1136 source >>= 1; 1137 Ndiv = target / source; 1138 } 1139 1140 if ((Ndiv < 6) || (Ndiv > 12)) 1141 return false; 1142 1143 return true; 1144 } 1145 1146 /* The size in bits of the pll divide multiplied by 10 1147 * to allow rounding later */ 1148 #define FIXED_PLL_SIZE ((1 << 24) * 10) 1149 1150 static int pll_factors(unsigned int source, unsigned int target, 1151 struct _pll_div *pll_div) 1152 { 1153 unsigned long long Kpart; 1154 unsigned int K, Ndiv, Nmod; 1155 1156 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); 1157 1158 /* Scale up target to PLL operating frequency */ 1159 target *= 4; 1160 1161 Ndiv = target / source; 1162 if (Ndiv < 6) { 1163 source >>= 1; 1164 pll_div->pre_div = 1; 1165 Ndiv = target / source; 1166 } else 1167 pll_div->pre_div = 0; 1168 1169 if ((Ndiv < 6) || (Ndiv > 12)) { 1170 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); 1171 return -EINVAL; 1172 } 1173 1174 pll_div->n = Ndiv; 1175 Nmod = target % source; 1176 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 1177 1178 do_div(Kpart, source); 1179 1180 K = Kpart & 0xFFFFFFFF; 1181 1182 /* Check if we need to round */ 1183 if ((K % 10) >= 5) 1184 K += 5; 1185 1186 /* Move down to proper range now rounding is done */ 1187 K /= 10; 1188 1189 pll_div->k = K; 1190 1191 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", 1192 pll_div->n, pll_div->k, pll_div->pre_div); 1193 1194 return 0; 1195 } 1196 1197 static int wm8960_set_pll(struct snd_soc_component *component, 1198 unsigned int freq_in, unsigned int freq_out) 1199 { 1200 u16 reg; 1201 static struct _pll_div pll_div; 1202 int ret; 1203 1204 if (freq_in && freq_out) { 1205 ret = pll_factors(freq_in, freq_out, &pll_div); 1206 if (ret != 0) 1207 return ret; 1208 } 1209 1210 /* Disable the PLL: even if we are changing the frequency the 1211 * PLL needs to be disabled while we do so. */ 1212 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0); 1213 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0); 1214 1215 if (!freq_in || !freq_out) 1216 return 0; 1217 1218 reg = snd_soc_component_read(component, WM8960_PLL1) & ~0x3f; 1219 reg |= pll_div.pre_div << 4; 1220 reg |= pll_div.n; 1221 1222 if (pll_div.k) { 1223 reg |= 0x20; 1224 1225 snd_soc_component_write(component, WM8960_PLL2, (pll_div.k >> 16) & 0xff); 1226 snd_soc_component_write(component, WM8960_PLL3, (pll_div.k >> 8) & 0xff); 1227 snd_soc_component_write(component, WM8960_PLL4, pll_div.k & 0xff); 1228 } 1229 snd_soc_component_write(component, WM8960_PLL1, reg); 1230 1231 /* Turn it on */ 1232 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0x1); 1233 msleep(250); 1234 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0x1); 1235 1236 return 0; 1237 } 1238 1239 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 1240 int source, unsigned int freq_in, unsigned int freq_out) 1241 { 1242 struct snd_soc_component *component = codec_dai->component; 1243 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1244 1245 wm8960->freq_in = freq_in; 1246 1247 if (pll_id == WM8960_SYSCLK_AUTO) 1248 return 0; 1249 1250 return wm8960_set_pll(component, freq_in, freq_out); 1251 } 1252 1253 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 1254 int div_id, int div) 1255 { 1256 struct snd_soc_component *component = codec_dai->component; 1257 u16 reg; 1258 1259 switch (div_id) { 1260 case WM8960_SYSCLKDIV: 1261 reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1f9; 1262 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1263 break; 1264 case WM8960_DACDIV: 1265 reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1c7; 1266 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1267 break; 1268 case WM8960_OPCLKDIV: 1269 reg = snd_soc_component_read(component, WM8960_PLL1) & 0x03f; 1270 snd_soc_component_write(component, WM8960_PLL1, reg | div); 1271 break; 1272 case WM8960_DCLKDIV: 1273 reg = snd_soc_component_read(component, WM8960_CLOCK2) & 0x03f; 1274 snd_soc_component_write(component, WM8960_CLOCK2, reg | div); 1275 break; 1276 case WM8960_TOCLKSEL: 1277 reg = snd_soc_component_read(component, WM8960_ADDCTL1) & 0x1fd; 1278 snd_soc_component_write(component, WM8960_ADDCTL1, reg | div); 1279 break; 1280 default: 1281 return -EINVAL; 1282 } 1283 1284 return 0; 1285 } 1286 1287 static int wm8960_set_bias_level(struct snd_soc_component *component, 1288 enum snd_soc_bias_level level) 1289 { 1290 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1291 1292 return wm8960->set_bias_level(component, level); 1293 } 1294 1295 static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, 1296 unsigned int freq, int dir) 1297 { 1298 struct snd_soc_component *component = dai->component; 1299 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1300 1301 switch (clk_id) { 1302 case WM8960_SYSCLK_MCLK: 1303 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1304 0x1, WM8960_SYSCLK_MCLK); 1305 break; 1306 case WM8960_SYSCLK_PLL: 1307 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1308 0x1, WM8960_SYSCLK_PLL); 1309 break; 1310 case WM8960_SYSCLK_AUTO: 1311 break; 1312 default: 1313 return -EINVAL; 1314 } 1315 1316 wm8960->sysclk = freq; 1317 wm8960->clk_id = clk_id; 1318 1319 return 0; 1320 } 1321 1322 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 1323 1324 #define WM8960_FORMATS \ 1325 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 1326 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 1327 1328 static const struct snd_soc_dai_ops wm8960_dai_ops = { 1329 .hw_params = wm8960_hw_params, 1330 .hw_free = wm8960_hw_free, 1331 .mute_stream = wm8960_mute, 1332 .set_fmt = wm8960_set_dai_fmt, 1333 .set_clkdiv = wm8960_set_dai_clkdiv, 1334 .set_pll = wm8960_set_dai_pll, 1335 .set_sysclk = wm8960_set_dai_sysclk, 1336 .no_capture_mute = 1, 1337 }; 1338 1339 static struct snd_soc_dai_driver wm8960_dai = { 1340 .name = "wm8960-hifi", 1341 .playback = { 1342 .stream_name = "Playback", 1343 .channels_min = 1, 1344 .channels_max = 2, 1345 .rates = WM8960_RATES, 1346 .formats = WM8960_FORMATS,}, 1347 .capture = { 1348 .stream_name = "Capture", 1349 .channels_min = 1, 1350 .channels_max = 2, 1351 .rates = WM8960_RATES, 1352 .formats = WM8960_FORMATS,}, 1353 .ops = &wm8960_dai_ops, 1354 .symmetric_rate = 1, 1355 }; 1356 1357 static int wm8960_probe(struct snd_soc_component *component) 1358 { 1359 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1360 struct wm8960_data *pdata = &wm8960->pdata; 1361 1362 if (pdata->capless) 1363 wm8960->set_bias_level = wm8960_set_bias_level_capless; 1364 else 1365 wm8960->set_bias_level = wm8960_set_bias_level_out3; 1366 1367 snd_soc_add_component_controls(component, wm8960_snd_controls, 1368 ARRAY_SIZE(wm8960_snd_controls)); 1369 wm8960_add_widgets(component); 1370 1371 return 0; 1372 } 1373 1374 static const struct snd_soc_component_driver soc_component_dev_wm8960 = { 1375 .probe = wm8960_probe, 1376 .set_bias_level = wm8960_set_bias_level, 1377 .suspend_bias_off = 1, 1378 .idle_bias_on = 1, 1379 .use_pmdown_time = 1, 1380 .endianness = 1, 1381 .non_legacy_dai_naming = 1, 1382 }; 1383 1384 static const struct regmap_config wm8960_regmap = { 1385 .reg_bits = 7, 1386 .val_bits = 9, 1387 .max_register = WM8960_PLL4, 1388 1389 .reg_defaults = wm8960_reg_defaults, 1390 .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults), 1391 .cache_type = REGCACHE_RBTREE, 1392 1393 .volatile_reg = wm8960_volatile, 1394 }; 1395 1396 static void wm8960_set_pdata_from_of(struct i2c_client *i2c, 1397 struct wm8960_data *pdata) 1398 { 1399 const struct device_node *np = i2c->dev.of_node; 1400 1401 if (of_property_read_bool(np, "wlf,capless")) 1402 pdata->capless = true; 1403 1404 if (of_property_read_bool(np, "wlf,shared-lrclk")) 1405 pdata->shared_lrclk = true; 1406 1407 of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_cfg, 1408 ARRAY_SIZE(pdata->gpio_cfg)); 1409 1410 of_property_read_u32_array(np, "wlf,hp-cfg", pdata->hp_cfg, 1411 ARRAY_SIZE(pdata->hp_cfg)); 1412 } 1413 1414 static int wm8960_i2c_probe(struct i2c_client *i2c) 1415 { 1416 struct wm8960_data *pdata = dev_get_platdata(&i2c->dev); 1417 struct wm8960_priv *wm8960; 1418 int ret; 1419 1420 wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv), 1421 GFP_KERNEL); 1422 if (wm8960 == NULL) 1423 return -ENOMEM; 1424 1425 wm8960->mclk = devm_clk_get(&i2c->dev, "mclk"); 1426 if (IS_ERR(wm8960->mclk)) { 1427 if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER) 1428 return -EPROBE_DEFER; 1429 } 1430 1431 wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap); 1432 if (IS_ERR(wm8960->regmap)) 1433 return PTR_ERR(wm8960->regmap); 1434 1435 if (pdata) 1436 memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data)); 1437 else if (i2c->dev.of_node) 1438 wm8960_set_pdata_from_of(i2c, &wm8960->pdata); 1439 1440 ret = wm8960_reset(wm8960->regmap); 1441 if (ret != 0) { 1442 dev_err(&i2c->dev, "Failed to issue reset\n"); 1443 return ret; 1444 } 1445 1446 if (wm8960->pdata.shared_lrclk) { 1447 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 1448 0x4, 0x4); 1449 if (ret != 0) { 1450 dev_err(&i2c->dev, "Failed to enable LRCM: %d\n", 1451 ret); 1452 return ret; 1453 } 1454 } 1455 1456 /* Latch the update bits */ 1457 regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100); 1458 regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100); 1459 regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100); 1460 regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100); 1461 regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100); 1462 regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100); 1463 regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100); 1464 regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100); 1465 regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100); 1466 regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100); 1467 1468 /* ADCLRC pin configured as GPIO. */ 1469 regmap_update_bits(wm8960->regmap, WM8960_IFACE2, 1 << 6, 1470 wm8960->pdata.gpio_cfg[0] << 6); 1471 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 0xF << 4, 1472 wm8960->pdata.gpio_cfg[1] << 4); 1473 1474 /* Enable headphone jack detect */ 1475 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 3 << 2, 1476 wm8960->pdata.hp_cfg[0] << 2); 1477 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 3 << 5, 1478 wm8960->pdata.hp_cfg[1] << 5); 1479 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL1, 3, 1480 wm8960->pdata.hp_cfg[2]); 1481 1482 i2c_set_clientdata(i2c, wm8960); 1483 1484 ret = devm_snd_soc_register_component(&i2c->dev, 1485 &soc_component_dev_wm8960, &wm8960_dai, 1); 1486 1487 return ret; 1488 } 1489 1490 static int wm8960_i2c_remove(struct i2c_client *client) 1491 { 1492 return 0; 1493 } 1494 1495 static const struct i2c_device_id wm8960_i2c_id[] = { 1496 { "wm8960", 0 }, 1497 { } 1498 }; 1499 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); 1500 1501 #if defined(CONFIG_OF) 1502 static const struct of_device_id wm8960_of_match[] = { 1503 { .compatible = "wlf,wm8960", }, 1504 { } 1505 }; 1506 MODULE_DEVICE_TABLE(of, wm8960_of_match); 1507 #endif 1508 1509 #if defined(CONFIG_ACPI) 1510 static const struct acpi_device_id wm8960_acpi_match[] = { 1511 { "1AEC8960", 0 }, /* Wolfson PCI ID + part ID */ 1512 { "10138960", 0 }, /* Cirrus Logic PCI ID + part ID */ 1513 { }, 1514 }; 1515 MODULE_DEVICE_TABLE(acpi, wm8960_acpi_match); 1516 #endif 1517 1518 static struct i2c_driver wm8960_i2c_driver = { 1519 .driver = { 1520 .name = "wm8960", 1521 .of_match_table = of_match_ptr(wm8960_of_match), 1522 .acpi_match_table = ACPI_PTR(wm8960_acpi_match), 1523 }, 1524 .probe_new = wm8960_i2c_probe, 1525 .remove = wm8960_i2c_remove, 1526 .id_table = wm8960_i2c_id, 1527 }; 1528 1529 module_i2c_driver(wm8960_i2c_driver); 1530 1531 MODULE_DESCRIPTION("ASoC WM8960 driver"); 1532 MODULE_AUTHOR("Liam Girdwood"); 1533 MODULE_LICENSE("GPL"); 1534