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 static const char *wm8960_dacslope[] = {"Normal", "Sloping"}; 159 160 static const struct soc_enum wm8960_enum[] = { 161 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), 162 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), 163 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), 164 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), 165 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), 166 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), 167 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 2, 4, wm8960_adc_data_output_sel), 168 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 4, 2, wm8960_dmonomix), 169 SOC_ENUM_SINGLE(WM8960_DACCTL2, 1, 2, wm8960_dacslope), 170 }; 171 172 static const int deemph_settings[] = { 0, 32000, 44100, 48000 }; 173 174 static int wm8960_set_deemph(struct snd_soc_component *component) 175 { 176 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 177 int val, i, best; 178 179 /* If we're using deemphasis select the nearest available sample 180 * rate. 181 */ 182 if (wm8960->deemph) { 183 best = 1; 184 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) { 185 if (abs(deemph_settings[i] - wm8960->lrclk) < 186 abs(deemph_settings[best] - wm8960->lrclk)) 187 best = i; 188 } 189 190 val = best << 1; 191 } else { 192 val = 0; 193 } 194 195 dev_dbg(component->dev, "Set deemphasis %d\n", val); 196 197 return snd_soc_component_update_bits(component, WM8960_DACCTL1, 198 0x6, val); 199 } 200 201 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol, 202 struct snd_ctl_elem_value *ucontrol) 203 { 204 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 205 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 206 207 ucontrol->value.integer.value[0] = wm8960->deemph; 208 return 0; 209 } 210 211 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol, 212 struct snd_ctl_elem_value *ucontrol) 213 { 214 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 215 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 216 unsigned int deemph = ucontrol->value.integer.value[0]; 217 218 if (deemph > 1) 219 return -EINVAL; 220 221 wm8960->deemph = deemph; 222 223 return wm8960_set_deemph(component); 224 } 225 226 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); 227 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1725, 75, 0); 228 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 229 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); 230 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 231 static const DECLARE_TLV_DB_SCALE(lineinboost_tlv, -1500, 300, 1); 232 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(micboost_tlv, 233 0, 1, TLV_DB_SCALE_ITEM(0, 1300, 0), 234 2, 3, TLV_DB_SCALE_ITEM(2000, 900, 0), 235 ); 236 237 static const struct snd_kcontrol_new wm8960_snd_controls[] = { 238 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, 239 0, 63, 0, inpga_tlv), 240 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, 241 6, 1, 0), 242 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, 243 7, 1, 1), 244 245 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume", 246 WM8960_INBMIX1, 4, 7, 0, lineinboost_tlv), 247 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume", 248 WM8960_INBMIX1, 1, 7, 0, lineinboost_tlv), 249 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume", 250 WM8960_INBMIX2, 4, 7, 0, lineinboost_tlv), 251 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume", 252 WM8960_INBMIX2, 1, 7, 0, lineinboost_tlv), 253 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT1 Volume", 254 WM8960_RINPATH, 4, 3, 0, micboost_tlv), 255 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT1 Volume", 256 WM8960_LINPATH, 4, 3, 0, micboost_tlv), 257 258 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, 259 0, 255, 0, dac_tlv), 260 261 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, 262 0, 127, 0, out_tlv), 263 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, 264 7, 1, 0), 265 266 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, 267 0, 127, 0, out_tlv), 268 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, 269 7, 1, 0), 270 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), 271 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), 272 273 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), 274 SOC_ENUM("ADC Polarity", wm8960_enum[0]), 275 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), 276 277 SOC_ENUM("DAC Polarity", wm8960_enum[1]), 278 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, 279 wm8960_get_deemph, wm8960_put_deemph), 280 281 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]), 282 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]), 283 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), 284 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), 285 286 SOC_ENUM("ALC Function", wm8960_enum[4]), 287 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), 288 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), 289 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), 290 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), 291 SOC_ENUM("ALC Mode", wm8960_enum[5]), 292 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), 293 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), 294 295 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), 296 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), 297 298 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC, 299 0, 255, 0, adc_tlv), 300 301 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", 302 WM8960_BYPASS1, 4, 7, 1, bypass_tlv), 303 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", 304 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), 305 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", 306 WM8960_BYPASS2, 4, 7, 1, bypass_tlv), 307 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", 308 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), 309 310 SOC_ENUM("ADC Data Output Select", wm8960_enum[6]), 311 SOC_ENUM("DAC Mono Mix", wm8960_enum[7]), 312 SOC_ENUM("DAC Filter Characteristics", wm8960_enum[8]), 313 }; 314 315 static const struct snd_kcontrol_new wm8960_lin_boost[] = { 316 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), 317 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), 318 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), 319 }; 320 321 static const struct snd_kcontrol_new wm8960_lin[] = { 322 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), 323 }; 324 325 static const struct snd_kcontrol_new wm8960_rin_boost[] = { 326 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), 327 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), 328 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), 329 }; 330 331 static const struct snd_kcontrol_new wm8960_rin[] = { 332 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), 333 }; 334 335 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { 336 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), 337 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), 338 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), 339 }; 340 341 static const struct snd_kcontrol_new wm8960_routput_mixer[] = { 342 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), 343 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), 344 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), 345 }; 346 347 static const struct snd_kcontrol_new wm8960_mono_out[] = { 348 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), 349 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), 350 }; 351 352 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { 353 SND_SOC_DAPM_INPUT("LINPUT1"), 354 SND_SOC_DAPM_INPUT("RINPUT1"), 355 SND_SOC_DAPM_INPUT("LINPUT2"), 356 SND_SOC_DAPM_INPUT("RINPUT2"), 357 SND_SOC_DAPM_INPUT("LINPUT3"), 358 SND_SOC_DAPM_INPUT("RINPUT3"), 359 360 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0), 361 362 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, 363 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), 364 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, 365 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), 366 367 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, 368 wm8960_lin, ARRAY_SIZE(wm8960_lin)), 369 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, 370 wm8960_rin, ARRAY_SIZE(wm8960_rin)), 371 372 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0), 373 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0), 374 375 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), 376 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), 377 378 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, 379 &wm8960_loutput_mixer[0], 380 ARRAY_SIZE(wm8960_loutput_mixer)), 381 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, 382 &wm8960_routput_mixer[0], 383 ARRAY_SIZE(wm8960_routput_mixer)), 384 385 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), 386 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), 387 388 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), 389 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), 390 391 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), 392 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), 393 394 SND_SOC_DAPM_OUTPUT("SPK_LP"), 395 SND_SOC_DAPM_OUTPUT("SPK_LN"), 396 SND_SOC_DAPM_OUTPUT("HP_L"), 397 SND_SOC_DAPM_OUTPUT("HP_R"), 398 SND_SOC_DAPM_OUTPUT("SPK_RP"), 399 SND_SOC_DAPM_OUTPUT("SPK_RN"), 400 SND_SOC_DAPM_OUTPUT("OUT3"), 401 }; 402 403 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = { 404 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, 405 &wm8960_mono_out[0], 406 ARRAY_SIZE(wm8960_mono_out)), 407 }; 408 409 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */ 410 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = { 411 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0), 412 }; 413 414 static const struct snd_soc_dapm_route audio_paths[] = { 415 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, 416 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, 417 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, 418 419 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer" }, 420 { "Left Input Mixer", "Boost Switch", "LINPUT1" }, /* Really Boost Switch */ 421 { "Left Input Mixer", NULL, "LINPUT2" }, 422 { "Left Input Mixer", NULL, "LINPUT3" }, 423 424 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, 425 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, 426 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, 427 428 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer" }, 429 { "Right Input Mixer", "Boost Switch", "RINPUT1" }, /* Really Boost Switch */ 430 { "Right Input Mixer", NULL, "RINPUT2" }, 431 { "Right Input Mixer", NULL, "RINPUT3" }, 432 433 { "Left ADC", NULL, "Left Input Mixer" }, 434 { "Right ADC", NULL, "Right Input Mixer" }, 435 436 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, 437 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer" }, 438 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, 439 440 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, 441 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" }, 442 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, 443 444 { "LOUT1 PGA", NULL, "Left Output Mixer" }, 445 { "ROUT1 PGA", NULL, "Right Output Mixer" }, 446 447 { "HP_L", NULL, "LOUT1 PGA" }, 448 { "HP_R", NULL, "ROUT1 PGA" }, 449 450 { "Left Speaker PGA", NULL, "Left Output Mixer" }, 451 { "Right Speaker PGA", NULL, "Right Output Mixer" }, 452 453 { "Left Speaker Output", NULL, "Left Speaker PGA" }, 454 { "Right Speaker Output", NULL, "Right Speaker PGA" }, 455 456 { "SPK_LN", NULL, "Left Speaker Output" }, 457 { "SPK_LP", NULL, "Left Speaker Output" }, 458 { "SPK_RN", NULL, "Right Speaker Output" }, 459 { "SPK_RP", NULL, "Right Speaker Output" }, 460 }; 461 462 static const struct snd_soc_dapm_route audio_paths_out3[] = { 463 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, 464 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, 465 466 { "OUT3", NULL, "Mono Output Mixer", } 467 }; 468 469 static const struct snd_soc_dapm_route audio_paths_capless[] = { 470 { "HP_L", NULL, "OUT3 VMID" }, 471 { "HP_R", NULL, "OUT3 VMID" }, 472 473 { "OUT3 VMID", NULL, "Left Output Mixer" }, 474 { "OUT3 VMID", NULL, "Right Output Mixer" }, 475 }; 476 477 static int wm8960_add_widgets(struct snd_soc_component *component) 478 { 479 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 480 struct wm8960_data *pdata = &wm8960->pdata; 481 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 482 struct snd_soc_dapm_widget *w; 483 484 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets, 485 ARRAY_SIZE(wm8960_dapm_widgets)); 486 487 snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths)); 488 489 /* In capless mode OUT3 is used to provide VMID for the 490 * headphone outputs, otherwise it is used as a mono mixer. 491 */ 492 if (pdata && pdata->capless) { 493 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless, 494 ARRAY_SIZE(wm8960_dapm_widgets_capless)); 495 496 snd_soc_dapm_add_routes(dapm, audio_paths_capless, 497 ARRAY_SIZE(audio_paths_capless)); 498 } else { 499 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3, 500 ARRAY_SIZE(wm8960_dapm_widgets_out3)); 501 502 snd_soc_dapm_add_routes(dapm, audio_paths_out3, 503 ARRAY_SIZE(audio_paths_out3)); 504 } 505 506 /* We need to power up the headphone output stage out of 507 * sequence for capless mode. To save scanning the widget 508 * list each time to find the desired power state do so now 509 * and save the result. 510 */ 511 list_for_each_entry(w, &component->card->widgets, list) { 512 if (w->dapm != dapm) 513 continue; 514 if (strcmp(w->name, "LOUT1 PGA") == 0) 515 wm8960->lout1 = w; 516 if (strcmp(w->name, "ROUT1 PGA") == 0) 517 wm8960->rout1 = w; 518 if (strcmp(w->name, "OUT3 VMID") == 0) 519 wm8960->out3 = w; 520 } 521 522 return 0; 523 } 524 525 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, 526 unsigned int fmt) 527 { 528 struct snd_soc_component *component = codec_dai->component; 529 u16 iface = 0; 530 531 /* set master/slave audio interface */ 532 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 533 case SND_SOC_DAIFMT_CBM_CFM: 534 iface |= 0x0040; 535 break; 536 case SND_SOC_DAIFMT_CBS_CFS: 537 break; 538 default: 539 return -EINVAL; 540 } 541 542 /* interface format */ 543 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 544 case SND_SOC_DAIFMT_I2S: 545 iface |= 0x0002; 546 break; 547 case SND_SOC_DAIFMT_RIGHT_J: 548 break; 549 case SND_SOC_DAIFMT_LEFT_J: 550 iface |= 0x0001; 551 break; 552 case SND_SOC_DAIFMT_DSP_A: 553 iface |= 0x0003; 554 break; 555 case SND_SOC_DAIFMT_DSP_B: 556 iface |= 0x0013; 557 break; 558 default: 559 return -EINVAL; 560 } 561 562 /* clock inversion */ 563 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 564 case SND_SOC_DAIFMT_NB_NF: 565 break; 566 case SND_SOC_DAIFMT_IB_IF: 567 iface |= 0x0090; 568 break; 569 case SND_SOC_DAIFMT_IB_NF: 570 iface |= 0x0080; 571 break; 572 case SND_SOC_DAIFMT_NB_IF: 573 iface |= 0x0010; 574 break; 575 default: 576 return -EINVAL; 577 } 578 579 /* set iface */ 580 snd_soc_component_write(component, WM8960_IFACE1, iface); 581 return 0; 582 } 583 584 static struct { 585 int rate; 586 unsigned int val; 587 } alc_rates[] = { 588 { 48000, 0 }, 589 { 44100, 0 }, 590 { 32000, 1 }, 591 { 22050, 2 }, 592 { 24000, 2 }, 593 { 16000, 3 }, 594 { 11025, 4 }, 595 { 12000, 4 }, 596 { 8000, 5 }, 597 }; 598 599 /* -1 for reserved value */ 600 static const int sysclk_divs[] = { 1, -1, 2, -1 }; 601 602 /* Multiply 256 for internal 256 div */ 603 static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 }; 604 605 /* Multiply 10 to eliminate decimials */ 606 static const int bclk_divs[] = { 607 10, 15, 20, 30, 40, 55, 60, 80, 110, 608 120, 160, 220, 240, 320, 320, 320 609 }; 610 611 /** 612 * wm8960_configure_sysclk - checks if there is a sysclk frequency available 613 * The sysclk must be chosen such that: 614 * - sysclk = MCLK / sysclk_divs 615 * - lrclk = sysclk / dac_divs 616 * - 10 * bclk = sysclk / bclk_divs 617 * 618 * @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; 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 } 660 if (k != ARRAY_SIZE(bclk_divs)) 661 break; 662 } 663 if (j != ARRAY_SIZE(dac_divs)) 664 break; 665 } 666 return *bclk_idx; 667 } 668 669 /** 670 * wm8960_configure_pll - checks if there is a PLL out frequency available 671 * The PLL out frequency must be chosen such that: 672 * - sysclk = lrclk * dac_divs 673 * - freq_out = sysclk * sysclk_divs 674 * - 10 * sysclk = bclk * bclk_divs 675 * 676 * If we cannot find an exact match for (sysclk, lrclk, bclk) 677 * triplet, we relax the bclk such that bclk is chosen as the 678 * closest available frequency greater than expected bclk. 679 * 680 * @component: component structure 681 * @freq_in: input frequency used to derive freq out via PLL 682 * @sysclk_idx: sysclk_divs index for found sysclk 683 * @dac_idx: dac_divs index for found lrclk 684 * @bclk_idx: bclk_divs index for found bclk 685 * 686 * Returns: 687 * < 0, in case no PLL frequency out available was found 688 * >=0, in case we could derive bclk, lrclk, sysclk from PLL out using 689 * (@sysclk_idx, @dac_idx, @bclk_idx) dividers 690 */ 691 static 692 int wm8960_configure_pll(struct snd_soc_component *component, int freq_in, 693 int *sysclk_idx, int *dac_idx, int *bclk_idx) 694 { 695 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 696 int sysclk, bclk, lrclk, freq_out; 697 int diff, closest, best_freq_out; 698 int i, j, k; 699 700 bclk = wm8960->bclk; 701 lrclk = wm8960->lrclk; 702 closest = freq_in; 703 704 best_freq_out = -EINVAL; 705 *sysclk_idx = *dac_idx = *bclk_idx = -1; 706 707 /* 708 * From Datasheet, the PLL performs best when f2 is between 709 * 90MHz and 100MHz, the desired sysclk output is 11.2896MHz 710 * or 12.288MHz, then sysclkdiv = 2 is the best choice. 711 * So search sysclk_divs from 2 to 1 other than from 1 to 2. 712 */ 713 for (i = ARRAY_SIZE(sysclk_divs) - 1; i >= 0; --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_read(component, WM8960_IFACE1); 749 int i, j, k; 750 int ret; 751 752 /* 753 * For Slave mode clocking should still be configured, 754 * so this if statement should be removed, but some platform 755 * may not work if the sysclk is not configured, to avoid such 756 * compatible issue, just add '!wm8960->sysclk' condition in 757 * this if statement. 758 */ 759 if (!(iface1 & (1 << 6)) && !wm8960->sysclk) { 760 dev_warn(component->dev, 761 "slave mode, but proceeding with no clock configuration\n"); 762 return 0; 763 } 764 765 if (wm8960->clk_id != WM8960_SYSCLK_MCLK && !wm8960->freq_in) { 766 dev_err(component->dev, "No MCLK configured\n"); 767 return -EINVAL; 768 } 769 770 freq_in = wm8960->freq_in; 771 /* 772 * If it's sysclk auto mode, check if the MCLK can provide sysclk or 773 * not. If MCLK can provide sysclk, using MCLK to provide sysclk 774 * directly. Otherwise, auto select a available pll out frequency 775 * and set PLL. 776 */ 777 if (wm8960->clk_id == WM8960_SYSCLK_AUTO) { 778 /* disable the PLL and using MCLK to provide sysclk */ 779 wm8960_set_pll(component, 0, 0); 780 freq_out = freq_in; 781 } else if (wm8960->sysclk) { 782 freq_out = wm8960->sysclk; 783 } else { 784 dev_err(component->dev, "No SYSCLK configured\n"); 785 return -EINVAL; 786 } 787 788 if (wm8960->clk_id != WM8960_SYSCLK_PLL) { 789 ret = wm8960_configure_sysclk(wm8960, freq_out, &i, &j, &k); 790 if (ret >= 0) { 791 goto configure_clock; 792 } else if (wm8960->clk_id != WM8960_SYSCLK_AUTO) { 793 dev_err(component->dev, "failed to configure clock\n"); 794 return -EINVAL; 795 } 796 } 797 798 freq_out = wm8960_configure_pll(component, freq_in, &i, &j, &k); 799 if (freq_out < 0) { 800 dev_err(component->dev, "failed to configure clock via PLL\n"); 801 return freq_out; 802 } 803 wm8960_set_pll(component, freq_in, freq_out); 804 805 configure_clock: 806 /* configure sysclk clock */ 807 snd_soc_component_update_bits(component, WM8960_CLOCK1, 3 << 1, i << 1); 808 809 /* configure frame clock */ 810 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 3, j << 3); 811 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 6, j << 6); 812 813 /* configure bit clock */ 814 snd_soc_component_update_bits(component, WM8960_CLOCK2, 0xf, k); 815 816 return 0; 817 } 818 819 static int wm8960_hw_params(struct snd_pcm_substream *substream, 820 struct snd_pcm_hw_params *params, 821 struct snd_soc_dai *dai) 822 { 823 struct snd_soc_component *component = dai->component; 824 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 825 u16 iface = snd_soc_component_read(component, WM8960_IFACE1) & 0xfff3; 826 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 827 int i; 828 829 wm8960->bclk = snd_soc_params_to_bclk(params); 830 if (params_channels(params) == 1) 831 wm8960->bclk *= 2; 832 833 /* bit size */ 834 switch (params_width(params)) { 835 case 16: 836 break; 837 case 20: 838 iface |= 0x0004; 839 break; 840 case 24: 841 iface |= 0x0008; 842 break; 843 case 32: 844 /* right justify mode does not support 32 word length */ 845 if ((iface & 0x3) != 0) { 846 iface |= 0x000c; 847 break; 848 } 849 fallthrough; 850 default: 851 dev_err(component->dev, "unsupported width %d\n", 852 params_width(params)); 853 return -EINVAL; 854 } 855 856 wm8960->lrclk = params_rate(params); 857 /* Update filters for the new rate */ 858 if (tx) { 859 wm8960_set_deemph(component); 860 } else { 861 for (i = 0; i < ARRAY_SIZE(alc_rates); i++) 862 if (alc_rates[i].rate == params_rate(params)) 863 snd_soc_component_update_bits(component, 864 WM8960_ADDCTL3, 0x7, 865 alc_rates[i].val); 866 } 867 868 /* set iface */ 869 snd_soc_component_write(component, WM8960_IFACE1, iface); 870 871 wm8960->is_stream_in_use[tx] = true; 872 873 if (!wm8960->is_stream_in_use[!tx]) 874 return wm8960_configure_clocking(component); 875 876 return 0; 877 } 878 879 static int wm8960_hw_free(struct snd_pcm_substream *substream, 880 struct snd_soc_dai *dai) 881 { 882 struct snd_soc_component *component = dai->component; 883 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 884 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 885 886 wm8960->is_stream_in_use[tx] = false; 887 888 return 0; 889 } 890 891 static int wm8960_mute(struct snd_soc_dai *dai, int mute, int direction) 892 { 893 struct snd_soc_component *component = dai->component; 894 895 if (mute) 896 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0x8); 897 else 898 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0); 899 return 0; 900 } 901 902 static int wm8960_set_bias_level_out3(struct snd_soc_component *component, 903 enum snd_soc_bias_level level) 904 { 905 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 906 u16 pm2 = snd_soc_component_read(component, WM8960_POWER2); 907 int ret; 908 ktime_t tout; 909 910 switch (level) { 911 case SND_SOC_BIAS_ON: 912 break; 913 914 case SND_SOC_BIAS_PREPARE: 915 switch (snd_soc_component_get_bias_level(component)) { 916 case SND_SOC_BIAS_STANDBY: 917 if (!IS_ERR(wm8960->mclk)) { 918 ret = clk_prepare_enable(wm8960->mclk); 919 if (ret) { 920 dev_err(component->dev, 921 "Failed to enable MCLK: %d\n", 922 ret); 923 return ret; 924 } 925 } 926 927 ret = wm8960_configure_clocking(component); 928 if (ret) 929 return ret; 930 931 /* Set VMID to 2x50k */ 932 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x80); 933 break; 934 935 case SND_SOC_BIAS_ON: 936 /* 937 * If it's sysclk auto mode, and the pll is enabled, 938 * disable the pll 939 */ 940 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 941 wm8960_set_pll(component, 0, 0); 942 943 if (!IS_ERR(wm8960->mclk)) 944 clk_disable_unprepare(wm8960->mclk); 945 break; 946 947 default: 948 break; 949 } 950 951 break; 952 953 case SND_SOC_BIAS_STANDBY: 954 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 955 /* ensure discharge is complete */ 956 tout = WM8960_DSCH_TOUT - ktime_ms_delta(ktime_get(), wm8960->dsch_start); 957 if (tout > 0) 958 msleep(tout); 959 960 regcache_sync(wm8960->regmap); 961 962 /* Enable anti-pop features */ 963 snd_soc_component_write(component, WM8960_APOP1, 964 WM8960_POBCTRL | WM8960_SOFT_ST | 965 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 966 967 /* Enable & ramp VMID at 2x50k */ 968 snd_soc_component_update_bits(component, WM8960_POWER1, 0x80, 0x80); 969 msleep(100); 970 971 /* Enable VREF */ 972 snd_soc_component_update_bits(component, WM8960_POWER1, WM8960_VREF, 973 WM8960_VREF); 974 975 /* Disable anti-pop features */ 976 snd_soc_component_write(component, WM8960_APOP1, WM8960_BUFIOEN); 977 } 978 979 /* Set VMID to 2x250k */ 980 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x100); 981 break; 982 983 case SND_SOC_BIAS_OFF: 984 /* Enable anti-pop features */ 985 snd_soc_component_write(component, WM8960_APOP1, 986 WM8960_POBCTRL | WM8960_SOFT_ST | 987 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 988 989 /* Disable VMID and VREF, mark discharge */ 990 snd_soc_component_write(component, WM8960_POWER1, 0); 991 wm8960->dsch_start = ktime_get(); 992 break; 993 } 994 995 return 0; 996 } 997 998 static int wm8960_set_bias_level_capless(struct snd_soc_component *component, 999 enum snd_soc_bias_level level) 1000 { 1001 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1002 u16 pm2 = snd_soc_component_read(component, WM8960_POWER2); 1003 int reg, ret; 1004 1005 switch (level) { 1006 case SND_SOC_BIAS_ON: 1007 break; 1008 1009 case SND_SOC_BIAS_PREPARE: 1010 switch (snd_soc_component_get_bias_level(component)) { 1011 case SND_SOC_BIAS_STANDBY: 1012 /* Enable anti pop mode */ 1013 snd_soc_component_update_bits(component, WM8960_APOP1, 1014 WM8960_POBCTRL | WM8960_SOFT_ST | 1015 WM8960_BUFDCOPEN, 1016 WM8960_POBCTRL | WM8960_SOFT_ST | 1017 WM8960_BUFDCOPEN); 1018 1019 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */ 1020 reg = 0; 1021 if (wm8960->lout1 && wm8960->lout1->power) 1022 reg |= WM8960_PWR2_LOUT1; 1023 if (wm8960->rout1 && wm8960->rout1->power) 1024 reg |= WM8960_PWR2_ROUT1; 1025 if (wm8960->out3 && wm8960->out3->power) 1026 reg |= WM8960_PWR2_OUT3; 1027 snd_soc_component_update_bits(component, WM8960_POWER2, 1028 WM8960_PWR2_LOUT1 | 1029 WM8960_PWR2_ROUT1 | 1030 WM8960_PWR2_OUT3, reg); 1031 1032 /* Enable VMID at 2*50k */ 1033 snd_soc_component_update_bits(component, WM8960_POWER1, 1034 WM8960_VMID_MASK, 0x80); 1035 1036 /* Ramp */ 1037 msleep(100); 1038 1039 /* Enable VREF */ 1040 snd_soc_component_update_bits(component, WM8960_POWER1, 1041 WM8960_VREF, WM8960_VREF); 1042 1043 msleep(100); 1044 1045 if (!IS_ERR(wm8960->mclk)) { 1046 ret = clk_prepare_enable(wm8960->mclk); 1047 if (ret) { 1048 dev_err(component->dev, 1049 "Failed to enable MCLK: %d\n", 1050 ret); 1051 return ret; 1052 } 1053 } 1054 1055 ret = wm8960_configure_clocking(component); 1056 if (ret) 1057 return ret; 1058 1059 break; 1060 1061 case SND_SOC_BIAS_ON: 1062 /* 1063 * If it's sysclk auto mode, and the pll is enabled, 1064 * disable the pll 1065 */ 1066 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 1067 wm8960_set_pll(component, 0, 0); 1068 1069 if (!IS_ERR(wm8960->mclk)) 1070 clk_disable_unprepare(wm8960->mclk); 1071 1072 /* Enable anti-pop mode */ 1073 snd_soc_component_update_bits(component, WM8960_APOP1, 1074 WM8960_POBCTRL | WM8960_SOFT_ST | 1075 WM8960_BUFDCOPEN, 1076 WM8960_POBCTRL | WM8960_SOFT_ST | 1077 WM8960_BUFDCOPEN); 1078 1079 /* Disable VMID and VREF */ 1080 snd_soc_component_update_bits(component, WM8960_POWER1, 1081 WM8960_VREF | WM8960_VMID_MASK, 0); 1082 break; 1083 1084 case SND_SOC_BIAS_OFF: 1085 regcache_sync(wm8960->regmap); 1086 break; 1087 default: 1088 break; 1089 } 1090 break; 1091 1092 case SND_SOC_BIAS_STANDBY: 1093 switch (snd_soc_component_get_bias_level(component)) { 1094 case SND_SOC_BIAS_PREPARE: 1095 /* Disable HP discharge */ 1096 snd_soc_component_update_bits(component, WM8960_APOP2, 1097 WM8960_DISOP | WM8960_DRES_MASK, 1098 0); 1099 1100 /* Disable anti-pop features */ 1101 snd_soc_component_update_bits(component, WM8960_APOP1, 1102 WM8960_POBCTRL | WM8960_SOFT_ST | 1103 WM8960_BUFDCOPEN, 1104 WM8960_POBCTRL | WM8960_SOFT_ST | 1105 WM8960_BUFDCOPEN); 1106 break; 1107 1108 default: 1109 break; 1110 } 1111 break; 1112 1113 case SND_SOC_BIAS_OFF: 1114 break; 1115 } 1116 1117 return 0; 1118 } 1119 1120 /* PLL divisors */ 1121 struct _pll_div { 1122 u32 pre_div:1; 1123 u32 n:4; 1124 u32 k:24; 1125 }; 1126 1127 static bool is_pll_freq_available(unsigned int source, unsigned int target) 1128 { 1129 unsigned int Ndiv; 1130 1131 if (source == 0 || target == 0) 1132 return false; 1133 1134 /* Scale up target to PLL operating frequency */ 1135 target *= 4; 1136 Ndiv = target / source; 1137 1138 if (Ndiv < 6) { 1139 source >>= 1; 1140 Ndiv = target / source; 1141 } 1142 1143 if ((Ndiv < 6) || (Ndiv > 12)) 1144 return false; 1145 1146 return true; 1147 } 1148 1149 /* The size in bits of the pll divide multiplied by 10 1150 * to allow rounding later */ 1151 #define FIXED_PLL_SIZE ((1 << 24) * 10) 1152 1153 static int pll_factors(unsigned int source, unsigned int target, 1154 struct _pll_div *pll_div) 1155 { 1156 unsigned long long Kpart; 1157 unsigned int K, Ndiv, Nmod; 1158 1159 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); 1160 1161 /* Scale up target to PLL operating frequency */ 1162 target *= 4; 1163 1164 Ndiv = target / source; 1165 if (Ndiv < 6) { 1166 source >>= 1; 1167 pll_div->pre_div = 1; 1168 Ndiv = target / source; 1169 } else 1170 pll_div->pre_div = 0; 1171 1172 if ((Ndiv < 6) || (Ndiv > 12)) { 1173 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); 1174 return -EINVAL; 1175 } 1176 1177 pll_div->n = Ndiv; 1178 Nmod = target % source; 1179 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 1180 1181 do_div(Kpart, source); 1182 1183 K = Kpart & 0xFFFFFFFF; 1184 1185 /* Check if we need to round */ 1186 if ((K % 10) >= 5) 1187 K += 5; 1188 1189 /* Move down to proper range now rounding is done */ 1190 K /= 10; 1191 1192 pll_div->k = K; 1193 1194 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", 1195 pll_div->n, pll_div->k, pll_div->pre_div); 1196 1197 return 0; 1198 } 1199 1200 static int wm8960_set_pll(struct snd_soc_component *component, 1201 unsigned int freq_in, unsigned int freq_out) 1202 { 1203 u16 reg; 1204 static struct _pll_div pll_div; 1205 int ret; 1206 1207 if (freq_in && freq_out) { 1208 ret = pll_factors(freq_in, freq_out, &pll_div); 1209 if (ret != 0) 1210 return ret; 1211 } 1212 1213 /* Disable the PLL: even if we are changing the frequency the 1214 * PLL needs to be disabled while we do so. */ 1215 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0); 1216 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0); 1217 1218 if (!freq_in || !freq_out) 1219 return 0; 1220 1221 reg = snd_soc_component_read(component, WM8960_PLL1) & ~0x3f; 1222 reg |= pll_div.pre_div << 4; 1223 reg |= pll_div.n; 1224 1225 if (pll_div.k) { 1226 reg |= 0x20; 1227 1228 snd_soc_component_write(component, WM8960_PLL2, (pll_div.k >> 16) & 0xff); 1229 snd_soc_component_write(component, WM8960_PLL3, (pll_div.k >> 8) & 0xff); 1230 snd_soc_component_write(component, WM8960_PLL4, pll_div.k & 0xff); 1231 } 1232 snd_soc_component_write(component, WM8960_PLL1, reg); 1233 1234 /* Turn it on */ 1235 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0x1); 1236 msleep(250); 1237 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0x1); 1238 1239 return 0; 1240 } 1241 1242 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 1243 int source, unsigned int freq_in, unsigned int freq_out) 1244 { 1245 struct snd_soc_component *component = codec_dai->component; 1246 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1247 1248 wm8960->freq_in = freq_in; 1249 1250 if (pll_id == WM8960_SYSCLK_AUTO) 1251 return 0; 1252 1253 return wm8960_set_pll(component, freq_in, freq_out); 1254 } 1255 1256 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 1257 int div_id, int div) 1258 { 1259 struct snd_soc_component *component = codec_dai->component; 1260 u16 reg; 1261 1262 switch (div_id) { 1263 case WM8960_SYSCLKDIV: 1264 reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1f9; 1265 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1266 break; 1267 case WM8960_DACDIV: 1268 reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1c7; 1269 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1270 break; 1271 case WM8960_OPCLKDIV: 1272 reg = snd_soc_component_read(component, WM8960_PLL1) & 0x03f; 1273 snd_soc_component_write(component, WM8960_PLL1, reg | div); 1274 break; 1275 case WM8960_DCLKDIV: 1276 reg = snd_soc_component_read(component, WM8960_CLOCK2) & 0x03f; 1277 snd_soc_component_write(component, WM8960_CLOCK2, reg | div); 1278 break; 1279 case WM8960_TOCLKSEL: 1280 reg = snd_soc_component_read(component, WM8960_ADDCTL1) & 0x1fd; 1281 snd_soc_component_write(component, WM8960_ADDCTL1, reg | div); 1282 break; 1283 default: 1284 return -EINVAL; 1285 } 1286 1287 return 0; 1288 } 1289 1290 static int wm8960_set_bias_level(struct snd_soc_component *component, 1291 enum snd_soc_bias_level level) 1292 { 1293 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1294 1295 return wm8960->set_bias_level(component, level); 1296 } 1297 1298 static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, 1299 unsigned int freq, int dir) 1300 { 1301 struct snd_soc_component *component = dai->component; 1302 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1303 1304 switch (clk_id) { 1305 case WM8960_SYSCLK_MCLK: 1306 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1307 0x1, WM8960_SYSCLK_MCLK); 1308 break; 1309 case WM8960_SYSCLK_PLL: 1310 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1311 0x1, WM8960_SYSCLK_PLL); 1312 break; 1313 case WM8960_SYSCLK_AUTO: 1314 break; 1315 default: 1316 return -EINVAL; 1317 } 1318 1319 wm8960->sysclk = freq; 1320 wm8960->clk_id = clk_id; 1321 1322 return 0; 1323 } 1324 1325 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 1326 1327 #define WM8960_FORMATS \ 1328 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 1329 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 1330 1331 static const struct snd_soc_dai_ops wm8960_dai_ops = { 1332 .hw_params = wm8960_hw_params, 1333 .hw_free = wm8960_hw_free, 1334 .mute_stream = wm8960_mute, 1335 .set_fmt = wm8960_set_dai_fmt, 1336 .set_clkdiv = wm8960_set_dai_clkdiv, 1337 .set_pll = wm8960_set_dai_pll, 1338 .set_sysclk = wm8960_set_dai_sysclk, 1339 .no_capture_mute = 1, 1340 }; 1341 1342 static struct snd_soc_dai_driver wm8960_dai = { 1343 .name = "wm8960-hifi", 1344 .playback = { 1345 .stream_name = "Playback", 1346 .channels_min = 1, 1347 .channels_max = 2, 1348 .rates = WM8960_RATES, 1349 .formats = WM8960_FORMATS,}, 1350 .capture = { 1351 .stream_name = "Capture", 1352 .channels_min = 1, 1353 .channels_max = 2, 1354 .rates = WM8960_RATES, 1355 .formats = WM8960_FORMATS,}, 1356 .ops = &wm8960_dai_ops, 1357 .symmetric_rate = 1, 1358 }; 1359 1360 static int wm8960_probe(struct snd_soc_component *component) 1361 { 1362 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1363 struct wm8960_data *pdata = &wm8960->pdata; 1364 1365 if (pdata->capless) 1366 wm8960->set_bias_level = wm8960_set_bias_level_capless; 1367 else 1368 wm8960->set_bias_level = wm8960_set_bias_level_out3; 1369 1370 snd_soc_add_component_controls(component, wm8960_snd_controls, 1371 ARRAY_SIZE(wm8960_snd_controls)); 1372 wm8960_add_widgets(component); 1373 1374 return 0; 1375 } 1376 1377 static const struct snd_soc_component_driver soc_component_dev_wm8960 = { 1378 .probe = wm8960_probe, 1379 .set_bias_level = wm8960_set_bias_level, 1380 .suspend_bias_off = 1, 1381 .idle_bias_on = 1, 1382 .use_pmdown_time = 1, 1383 .endianness = 1, 1384 }; 1385 1386 static const struct regmap_config wm8960_regmap = { 1387 .reg_bits = 7, 1388 .val_bits = 9, 1389 .max_register = WM8960_PLL4, 1390 1391 .reg_defaults = wm8960_reg_defaults, 1392 .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults), 1393 .cache_type = REGCACHE_MAPLE, 1394 1395 .volatile_reg = wm8960_volatile, 1396 }; 1397 1398 static void wm8960_set_pdata_from_of(struct i2c_client *i2c, 1399 struct wm8960_data *pdata) 1400 { 1401 const struct device_node *np = i2c->dev.of_node; 1402 1403 if (of_property_read_bool(np, "wlf,capless")) 1404 pdata->capless = true; 1405 1406 if (of_property_read_bool(np, "wlf,shared-lrclk")) 1407 pdata->shared_lrclk = true; 1408 1409 of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_cfg, 1410 ARRAY_SIZE(pdata->gpio_cfg)); 1411 1412 of_property_read_u32_array(np, "wlf,hp-cfg", pdata->hp_cfg, 1413 ARRAY_SIZE(pdata->hp_cfg)); 1414 } 1415 1416 static int wm8960_i2c_probe(struct i2c_client *i2c) 1417 { 1418 struct wm8960_data *pdata = dev_get_platdata(&i2c->dev); 1419 struct wm8960_priv *wm8960; 1420 int ret; 1421 u8 val; 1422 1423 wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv), 1424 GFP_KERNEL); 1425 if (wm8960 == NULL) 1426 return -ENOMEM; 1427 1428 wm8960->mclk = devm_clk_get(&i2c->dev, "mclk"); 1429 if (IS_ERR(wm8960->mclk)) { 1430 if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER) 1431 return -EPROBE_DEFER; 1432 } else { 1433 ret = clk_get_rate(wm8960->mclk); 1434 if (ret >= 0) { 1435 wm8960->freq_in = ret; 1436 } else { 1437 dev_err(&i2c->dev, "Failed to read MCLK rate: %d\n", 1438 ret); 1439 } 1440 } 1441 1442 wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap); 1443 if (IS_ERR(wm8960->regmap)) 1444 return PTR_ERR(wm8960->regmap); 1445 1446 if (pdata) 1447 memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data)); 1448 else if (i2c->dev.of_node) 1449 wm8960_set_pdata_from_of(i2c, &wm8960->pdata); 1450 1451 ret = i2c_master_recv(i2c, &val, sizeof(val)); 1452 if (ret >= 0) { 1453 dev_err(&i2c->dev, "Not wm8960, wm8960 reg can not read by i2c\n"); 1454 return -EINVAL; 1455 } 1456 1457 ret = wm8960_reset(wm8960->regmap); 1458 if (ret != 0) { 1459 dev_err(&i2c->dev, "Failed to issue reset\n"); 1460 return ret; 1461 } 1462 1463 if (wm8960->pdata.shared_lrclk) { 1464 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 1465 0x4, 0x4); 1466 if (ret != 0) { 1467 dev_err(&i2c->dev, "Failed to enable LRCM: %d\n", 1468 ret); 1469 return ret; 1470 } 1471 } 1472 1473 /* Latch the update bits */ 1474 regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100); 1475 regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100); 1476 regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100); 1477 regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100); 1478 regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100); 1479 regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100); 1480 regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100); 1481 regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100); 1482 regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100); 1483 regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100); 1484 1485 /* ADCLRC pin configured as GPIO. */ 1486 regmap_update_bits(wm8960->regmap, WM8960_IFACE2, 1 << 6, 1487 wm8960->pdata.gpio_cfg[0] << 6); 1488 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 0xF << 4, 1489 wm8960->pdata.gpio_cfg[1] << 4); 1490 1491 /* Enable headphone jack detect */ 1492 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 3 << 2, 1493 wm8960->pdata.hp_cfg[0] << 2); 1494 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 3 << 5, 1495 wm8960->pdata.hp_cfg[1] << 5); 1496 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL1, 3, 1497 wm8960->pdata.hp_cfg[2]); 1498 1499 i2c_set_clientdata(i2c, wm8960); 1500 1501 ret = devm_snd_soc_register_component(&i2c->dev, 1502 &soc_component_dev_wm8960, &wm8960_dai, 1); 1503 1504 return ret; 1505 } 1506 1507 static void wm8960_i2c_remove(struct i2c_client *client) 1508 {} 1509 1510 static const struct i2c_device_id wm8960_i2c_id[] = { 1511 { "wm8960", 0 }, 1512 { } 1513 }; 1514 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); 1515 1516 #if defined(CONFIG_OF) 1517 static const struct of_device_id wm8960_of_match[] = { 1518 { .compatible = "wlf,wm8960", }, 1519 { } 1520 }; 1521 MODULE_DEVICE_TABLE(of, wm8960_of_match); 1522 #endif 1523 1524 #if defined(CONFIG_ACPI) 1525 static const struct acpi_device_id wm8960_acpi_match[] = { 1526 { "1AEC8960", 0 }, /* Wolfson PCI ID + part ID */ 1527 { "10138960", 0 }, /* Cirrus Logic PCI ID + part ID */ 1528 { }, 1529 }; 1530 MODULE_DEVICE_TABLE(acpi, wm8960_acpi_match); 1531 #endif 1532 1533 static struct i2c_driver wm8960_i2c_driver = { 1534 .driver = { 1535 .name = "wm8960", 1536 .of_match_table = of_match_ptr(wm8960_of_match), 1537 .acpi_match_table = ACPI_PTR(wm8960_acpi_match), 1538 }, 1539 .probe = wm8960_i2c_probe, 1540 .remove = wm8960_i2c_remove, 1541 .id_table = wm8960_i2c_id, 1542 }; 1543 1544 module_i2c_driver(wm8960_i2c_driver); 1545 1546 MODULE_DESCRIPTION("ASoC WM8960 driver"); 1547 MODULE_AUTHOR("Liam Girdwood"); 1548 MODULE_LICENSE("GPL"); 1549