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 wm8960_volatile(struct device * dev,unsigned int reg)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 #define WM8960_NUM_SUPPLIES 5 124 static const char *wm8960_supply_names[WM8960_NUM_SUPPLIES] = { 125 "DCVDD", 126 "DBVDD", 127 "AVDD", 128 "SPKVDD1", 129 "SPKVDD2", 130 }; 131 132 struct wm8960_priv { 133 struct clk *mclk; 134 struct regmap *regmap; 135 int (*set_bias_level)(struct snd_soc_component *, 136 enum snd_soc_bias_level level); 137 struct snd_soc_dapm_widget *lout1; 138 struct snd_soc_dapm_widget *rout1; 139 struct snd_soc_dapm_widget *out3; 140 bool deemph; 141 int lrclk; 142 int bclk; 143 int sysclk; 144 int clk_id; 145 int freq_in; 146 bool is_stream_in_use[2]; 147 struct wm8960_data pdata; 148 ktime_t dsch_start; 149 struct regulator_bulk_data supplies[WM8960_NUM_SUPPLIES]; 150 }; 151 152 #define wm8960_reset(c) regmap_write(c, WM8960_RESET, 0) 153 154 /* enumerated controls */ 155 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", 156 "Right Inverted", "Stereo Inversion"}; 157 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; 158 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; 159 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; 160 static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; 161 static const char *wm8960_adc_data_output_sel[] = { 162 "Left Data = Left ADC; Right Data = Right ADC", 163 "Left Data = Left ADC; Right Data = Left ADC", 164 "Left Data = Right ADC; Right Data = Right ADC", 165 "Left Data = Right ADC; Right Data = Left ADC", 166 }; 167 static const char *wm8960_dmonomix[] = {"Stereo", "Mono"}; 168 static const char *wm8960_dacslope[] = {"Normal", "Sloping"}; 169 170 static const struct soc_enum wm8960_enum[] = { 171 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), 172 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), 173 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), 174 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), 175 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), 176 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), 177 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 2, 4, wm8960_adc_data_output_sel), 178 SOC_ENUM_SINGLE(WM8960_ADDCTL1, 4, 2, wm8960_dmonomix), 179 SOC_ENUM_SINGLE(WM8960_DACCTL2, 1, 2, wm8960_dacslope), 180 }; 181 182 static const int deemph_settings[] = { 0, 32000, 44100, 48000 }; 183 wm8960_set_deemph(struct snd_soc_component * component)184 static int wm8960_set_deemph(struct snd_soc_component *component) 185 { 186 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 187 int val, i, best; 188 189 /* If we're using deemphasis select the nearest available sample 190 * rate. 191 */ 192 if (wm8960->deemph) { 193 best = 1; 194 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) { 195 if (abs(deemph_settings[i] - wm8960->lrclk) < 196 abs(deemph_settings[best] - wm8960->lrclk)) 197 best = i; 198 } 199 200 val = best << 1; 201 } else { 202 val = 0; 203 } 204 205 dev_dbg(component->dev, "Set deemphasis %d\n", val); 206 207 return snd_soc_component_update_bits(component, WM8960_DACCTL1, 208 0x6, val); 209 } 210 wm8960_get_deemph(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)211 static int wm8960_get_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); 216 217 ucontrol->value.integer.value[0] = wm8960->deemph; 218 return 0; 219 } 220 wm8960_put_deemph(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)221 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol, 222 struct snd_ctl_elem_value *ucontrol) 223 { 224 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); 225 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 226 unsigned int deemph = ucontrol->value.integer.value[0]; 227 228 if (deemph > 1) 229 return -EINVAL; 230 231 wm8960->deemph = deemph; 232 233 return wm8960_set_deemph(component); 234 } 235 236 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); 237 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1725, 75, 0); 238 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 239 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); 240 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 241 static const DECLARE_TLV_DB_SCALE(lineinboost_tlv, -1500, 300, 1); 242 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(micboost_tlv, 243 0, 1, TLV_DB_SCALE_ITEM(0, 1300, 0), 244 2, 3, TLV_DB_SCALE_ITEM(2000, 900, 0), 245 ); 246 247 static const struct snd_kcontrol_new wm8960_snd_controls[] = { 248 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, 249 0, 63, 0, inpga_tlv), 250 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, 251 6, 1, 0), 252 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, 253 7, 1, 1), 254 255 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume", 256 WM8960_INBMIX1, 4, 7, 0, lineinboost_tlv), 257 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume", 258 WM8960_INBMIX1, 1, 7, 0, lineinboost_tlv), 259 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume", 260 WM8960_INBMIX2, 4, 7, 0, lineinboost_tlv), 261 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume", 262 WM8960_INBMIX2, 1, 7, 0, lineinboost_tlv), 263 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT1 Volume", 264 WM8960_RINPATH, 4, 3, 0, micboost_tlv), 265 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT1 Volume", 266 WM8960_LINPATH, 4, 3, 0, micboost_tlv), 267 268 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, 269 0, 255, 0, dac_tlv), 270 271 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, 272 0, 127, 0, out_tlv), 273 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, 274 7, 1, 0), 275 276 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, 277 0, 127, 0, out_tlv), 278 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, 279 7, 1, 0), 280 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), 281 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), 282 283 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), 284 SOC_ENUM("ADC Polarity", wm8960_enum[0]), 285 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), 286 287 SOC_ENUM("DAC Polarity", wm8960_enum[1]), 288 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, 289 wm8960_get_deemph, wm8960_put_deemph), 290 291 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]), 292 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]), 293 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), 294 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), 295 296 SOC_ENUM("ALC Function", wm8960_enum[4]), 297 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), 298 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), 299 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), 300 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), 301 SOC_ENUM("ALC Mode", wm8960_enum[5]), 302 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), 303 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), 304 305 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), 306 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), 307 308 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC, 309 0, 255, 0, adc_tlv), 310 311 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", 312 WM8960_BYPASS1, 4, 7, 1, bypass_tlv), 313 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", 314 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), 315 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", 316 WM8960_BYPASS2, 4, 7, 1, bypass_tlv), 317 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", 318 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), 319 320 SOC_ENUM("ADC Data Output Select", wm8960_enum[6]), 321 SOC_ENUM("DAC Mono Mix", wm8960_enum[7]), 322 SOC_ENUM("DAC Filter Characteristics", wm8960_enum[8]), 323 }; 324 325 static const struct snd_kcontrol_new wm8960_lin_boost[] = { 326 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), 327 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), 328 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), 329 }; 330 331 static const struct snd_kcontrol_new wm8960_lin[] = { 332 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), 333 }; 334 335 static const struct snd_kcontrol_new wm8960_rin_boost[] = { 336 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), 337 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), 338 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), 339 }; 340 341 static const struct snd_kcontrol_new wm8960_rin[] = { 342 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), 343 }; 344 345 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { 346 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), 347 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), 348 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), 349 }; 350 351 static const struct snd_kcontrol_new wm8960_routput_mixer[] = { 352 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), 353 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), 354 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), 355 }; 356 357 static const struct snd_kcontrol_new wm8960_mono_out[] = { 358 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), 359 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), 360 }; 361 362 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { 363 SND_SOC_DAPM_INPUT("LINPUT1"), 364 SND_SOC_DAPM_INPUT("RINPUT1"), 365 SND_SOC_DAPM_INPUT("LINPUT2"), 366 SND_SOC_DAPM_INPUT("RINPUT2"), 367 SND_SOC_DAPM_INPUT("LINPUT3"), 368 SND_SOC_DAPM_INPUT("RINPUT3"), 369 370 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0), 371 372 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, 373 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), 374 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, 375 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), 376 377 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, 378 wm8960_lin, ARRAY_SIZE(wm8960_lin)), 379 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, 380 wm8960_rin, ARRAY_SIZE(wm8960_rin)), 381 382 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0), 383 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0), 384 385 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), 386 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), 387 388 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, 389 &wm8960_loutput_mixer[0], 390 ARRAY_SIZE(wm8960_loutput_mixer)), 391 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, 392 &wm8960_routput_mixer[0], 393 ARRAY_SIZE(wm8960_routput_mixer)), 394 395 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), 396 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), 397 398 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), 399 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), 400 401 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), 402 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), 403 404 SND_SOC_DAPM_OUTPUT("SPK_LP"), 405 SND_SOC_DAPM_OUTPUT("SPK_LN"), 406 SND_SOC_DAPM_OUTPUT("HP_L"), 407 SND_SOC_DAPM_OUTPUT("HP_R"), 408 SND_SOC_DAPM_OUTPUT("SPK_RP"), 409 SND_SOC_DAPM_OUTPUT("SPK_RN"), 410 SND_SOC_DAPM_OUTPUT("OUT3"), 411 }; 412 413 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = { 414 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, 415 &wm8960_mono_out[0], 416 ARRAY_SIZE(wm8960_mono_out)), 417 }; 418 419 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */ 420 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = { 421 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0), 422 }; 423 424 static const struct snd_soc_dapm_route audio_paths[] = { 425 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, 426 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, 427 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, 428 429 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer" }, 430 { "Left Input Mixer", "Boost Switch", "LINPUT1" }, /* Really Boost Switch */ 431 { "Left Input Mixer", NULL, "LINPUT2" }, 432 { "Left Input Mixer", NULL, "LINPUT3" }, 433 434 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, 435 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, 436 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, 437 438 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer" }, 439 { "Right Input Mixer", "Boost Switch", "RINPUT1" }, /* Really Boost Switch */ 440 { "Right Input Mixer", NULL, "RINPUT2" }, 441 { "Right Input Mixer", NULL, "RINPUT3" }, 442 443 { "Left ADC", NULL, "Left Input Mixer" }, 444 { "Right ADC", NULL, "Right Input Mixer" }, 445 446 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, 447 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer" }, 448 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, 449 450 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, 451 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" }, 452 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, 453 454 { "LOUT1 PGA", NULL, "Left Output Mixer" }, 455 { "ROUT1 PGA", NULL, "Right Output Mixer" }, 456 457 { "HP_L", NULL, "LOUT1 PGA" }, 458 { "HP_R", NULL, "ROUT1 PGA" }, 459 460 { "Left Speaker PGA", NULL, "Left Output Mixer" }, 461 { "Right Speaker PGA", NULL, "Right Output Mixer" }, 462 463 { "Left Speaker Output", NULL, "Left Speaker PGA" }, 464 { "Right Speaker Output", NULL, "Right Speaker PGA" }, 465 466 { "SPK_LN", NULL, "Left Speaker Output" }, 467 { "SPK_LP", NULL, "Left Speaker Output" }, 468 { "SPK_RN", NULL, "Right Speaker Output" }, 469 { "SPK_RP", NULL, "Right Speaker Output" }, 470 }; 471 472 static const struct snd_soc_dapm_route audio_paths_out3[] = { 473 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, 474 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, 475 476 { "OUT3", NULL, "Mono Output Mixer", } 477 }; 478 479 static const struct snd_soc_dapm_route audio_paths_capless[] = { 480 { "HP_L", NULL, "OUT3 VMID" }, 481 { "HP_R", NULL, "OUT3 VMID" }, 482 483 { "OUT3 VMID", NULL, "Left Output Mixer" }, 484 { "OUT3 VMID", NULL, "Right Output Mixer" }, 485 }; 486 wm8960_add_widgets(struct snd_soc_component * component)487 static int wm8960_add_widgets(struct snd_soc_component *component) 488 { 489 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 490 struct wm8960_data *pdata = &wm8960->pdata; 491 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 492 struct snd_soc_dapm_widget *w; 493 494 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets, 495 ARRAY_SIZE(wm8960_dapm_widgets)); 496 497 snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths)); 498 499 /* In capless mode OUT3 is used to provide VMID for the 500 * headphone outputs, otherwise it is used as a mono mixer. 501 */ 502 if (pdata && pdata->capless) { 503 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless, 504 ARRAY_SIZE(wm8960_dapm_widgets_capless)); 505 506 snd_soc_dapm_add_routes(dapm, audio_paths_capless, 507 ARRAY_SIZE(audio_paths_capless)); 508 } else { 509 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3, 510 ARRAY_SIZE(wm8960_dapm_widgets_out3)); 511 512 snd_soc_dapm_add_routes(dapm, audio_paths_out3, 513 ARRAY_SIZE(audio_paths_out3)); 514 } 515 516 /* We need to power up the headphone output stage out of 517 * sequence for capless mode. To save scanning the widget 518 * list each time to find the desired power state do so now 519 * and save the result. 520 */ 521 list_for_each_entry(w, &component->card->widgets, list) { 522 if (w->dapm != dapm) 523 continue; 524 if (strcmp(w->name, "LOUT1 PGA") == 0) 525 wm8960->lout1 = w; 526 if (strcmp(w->name, "ROUT1 PGA") == 0) 527 wm8960->rout1 = w; 528 if (strcmp(w->name, "OUT3 VMID") == 0) 529 wm8960->out3 = w; 530 } 531 532 return 0; 533 } 534 wm8960_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)535 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, 536 unsigned int fmt) 537 { 538 struct snd_soc_component *component = codec_dai->component; 539 u16 iface = 0; 540 541 /* set master/slave audio interface */ 542 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 543 case SND_SOC_DAIFMT_CBM_CFM: 544 iface |= 0x0040; 545 break; 546 case SND_SOC_DAIFMT_CBS_CFS: 547 break; 548 default: 549 return -EINVAL; 550 } 551 552 /* interface format */ 553 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 554 case SND_SOC_DAIFMT_I2S: 555 iface |= 0x0002; 556 break; 557 case SND_SOC_DAIFMT_RIGHT_J: 558 break; 559 case SND_SOC_DAIFMT_LEFT_J: 560 iface |= 0x0001; 561 break; 562 case SND_SOC_DAIFMT_DSP_A: 563 iface |= 0x0003; 564 break; 565 case SND_SOC_DAIFMT_DSP_B: 566 iface |= 0x0013; 567 break; 568 default: 569 return -EINVAL; 570 } 571 572 /* clock inversion */ 573 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 574 case SND_SOC_DAIFMT_NB_NF: 575 break; 576 case SND_SOC_DAIFMT_IB_IF: 577 iface |= 0x0090; 578 break; 579 case SND_SOC_DAIFMT_IB_NF: 580 iface |= 0x0080; 581 break; 582 case SND_SOC_DAIFMT_NB_IF: 583 iface |= 0x0010; 584 break; 585 default: 586 return -EINVAL; 587 } 588 589 /* set iface */ 590 snd_soc_component_write(component, WM8960_IFACE1, iface); 591 return 0; 592 } 593 594 static struct { 595 int rate; 596 unsigned int val; 597 } alc_rates[] = { 598 { 48000, 0 }, 599 { 44100, 0 }, 600 { 32000, 1 }, 601 { 22050, 2 }, 602 { 24000, 2 }, 603 { 16000, 3 }, 604 { 11025, 4 }, 605 { 12000, 4 }, 606 { 8000, 5 }, 607 }; 608 609 /* -1 for reserved value */ 610 static const int sysclk_divs[] = { 1, -1, 2, -1 }; 611 612 /* Multiply 256 for internal 256 div */ 613 static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 }; 614 615 /* Multiply 10 to eliminate decimials */ 616 static const int bclk_divs[] = { 617 10, 15, 20, 30, 40, 55, 60, 80, 110, 618 120, 160, 220, 240, 320, 320, 320 619 }; 620 621 /** 622 * wm8960_configure_sysclk - checks if there is a sysclk frequency available 623 * The sysclk must be chosen such that: 624 * - sysclk = MCLK / sysclk_divs 625 * - lrclk = sysclk / dac_divs 626 * - 10 * bclk = sysclk / bclk_divs 627 * 628 * @wm8960: codec private data 629 * @mclk: MCLK used to derive sysclk 630 * @sysclk_idx: sysclk_divs index for found sysclk 631 * @dac_idx: dac_divs index for found lrclk 632 * @bclk_idx: bclk_divs index for found bclk 633 * 634 * Returns: 635 * -1, in case no sysclk frequency available found 636 * >=0, in case we could derive bclk and lrclk from sysclk using 637 * (@sysclk_idx, @dac_idx, @bclk_idx) dividers 638 */ 639 static wm8960_configure_sysclk(struct wm8960_priv * wm8960,int mclk,int * sysclk_idx,int * dac_idx,int * bclk_idx)640 int wm8960_configure_sysclk(struct wm8960_priv *wm8960, int mclk, 641 int *sysclk_idx, int *dac_idx, int *bclk_idx) 642 { 643 int sysclk, bclk, lrclk; 644 int i, j, k; 645 int diff; 646 647 /* marker for no match */ 648 *bclk_idx = -1; 649 650 bclk = wm8960->bclk; 651 lrclk = wm8960->lrclk; 652 653 /* check if the sysclk frequency is available. */ 654 for (i = 0; i < ARRAY_SIZE(sysclk_divs); ++i) { 655 if (sysclk_divs[i] == -1) 656 continue; 657 sysclk = mclk / sysclk_divs[i]; 658 for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) { 659 if (sysclk != dac_divs[j] * lrclk) 660 continue; 661 for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) { 662 diff = sysclk - bclk * bclk_divs[k] / 10; 663 if (diff == 0) { 664 *sysclk_idx = i; 665 *dac_idx = j; 666 *bclk_idx = k; 667 break; 668 } 669 } 670 if (k != ARRAY_SIZE(bclk_divs)) 671 break; 672 } 673 if (j != ARRAY_SIZE(dac_divs)) 674 break; 675 } 676 return *bclk_idx; 677 } 678 679 /** 680 * wm8960_configure_pll - checks if there is a PLL out frequency available 681 * The PLL out frequency must be chosen such that: 682 * - sysclk = lrclk * dac_divs 683 * - freq_out = sysclk * sysclk_divs 684 * - 10 * sysclk = bclk * bclk_divs 685 * 686 * If we cannot find an exact match for (sysclk, lrclk, bclk) 687 * triplet, we relax the bclk such that bclk is chosen as the 688 * closest available frequency greater than expected bclk. 689 * 690 * @component: component structure 691 * @freq_in: input frequency used to derive freq out via PLL 692 * @sysclk_idx: sysclk_divs index for found sysclk 693 * @dac_idx: dac_divs index for found lrclk 694 * @bclk_idx: bclk_divs index for found bclk 695 * 696 * Returns: 697 * < 0, in case no PLL frequency out available was found 698 * >=0, in case we could derive bclk, lrclk, sysclk from PLL out using 699 * (@sysclk_idx, @dac_idx, @bclk_idx) dividers 700 */ 701 static wm8960_configure_pll(struct snd_soc_component * component,int freq_in,int * sysclk_idx,int * dac_idx,int * bclk_idx)702 int wm8960_configure_pll(struct snd_soc_component *component, int freq_in, 703 int *sysclk_idx, int *dac_idx, int *bclk_idx) 704 { 705 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 706 int sysclk, bclk, lrclk, freq_out; 707 int diff, closest, best_freq_out; 708 int i, j, k; 709 710 bclk = wm8960->bclk; 711 lrclk = wm8960->lrclk; 712 closest = freq_in; 713 714 best_freq_out = -EINVAL; 715 *sysclk_idx = *dac_idx = *bclk_idx = -1; 716 717 /* 718 * From Datasheet, the PLL performs best when f2 is between 719 * 90MHz and 100MHz, the desired sysclk output is 11.2896MHz 720 * or 12.288MHz, then sysclkdiv = 2 is the best choice. 721 * So search sysclk_divs from 2 to 1 other than from 1 to 2. 722 */ 723 for (i = ARRAY_SIZE(sysclk_divs) - 1; i >= 0; --i) { 724 if (sysclk_divs[i] == -1) 725 continue; 726 for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) { 727 sysclk = lrclk * dac_divs[j]; 728 freq_out = sysclk * sysclk_divs[i]; 729 730 for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) { 731 if (!is_pll_freq_available(freq_in, freq_out)) 732 continue; 733 734 diff = sysclk - bclk * bclk_divs[k] / 10; 735 if (diff == 0) { 736 *sysclk_idx = i; 737 *dac_idx = j; 738 *bclk_idx = k; 739 return freq_out; 740 } 741 if (diff > 0 && closest > diff) { 742 *sysclk_idx = i; 743 *dac_idx = j; 744 *bclk_idx = k; 745 closest = diff; 746 best_freq_out = freq_out; 747 } 748 } 749 } 750 } 751 752 return best_freq_out; 753 } wm8960_configure_clocking(struct snd_soc_component * component)754 static int wm8960_configure_clocking(struct snd_soc_component *component) 755 { 756 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 757 int freq_out, freq_in; 758 u16 iface1 = snd_soc_component_read(component, WM8960_IFACE1); 759 int i, j, k; 760 int ret; 761 762 /* 763 * For Slave mode clocking should still be configured, 764 * so this if statement should be removed, but some platform 765 * may not work if the sysclk is not configured, to avoid such 766 * compatible issue, just add '!wm8960->sysclk' condition in 767 * this if statement. 768 */ 769 if (!(iface1 & (1 << 6)) && !wm8960->sysclk) { 770 dev_warn(component->dev, 771 "slave mode, but proceeding with no clock configuration\n"); 772 return 0; 773 } 774 775 if (wm8960->clk_id != WM8960_SYSCLK_MCLK && !wm8960->freq_in) { 776 dev_err(component->dev, "No MCLK configured\n"); 777 return -EINVAL; 778 } 779 780 freq_in = wm8960->freq_in; 781 /* 782 * If it's sysclk auto mode, check if the MCLK can provide sysclk or 783 * not. If MCLK can provide sysclk, using MCLK to provide sysclk 784 * directly. Otherwise, auto select a available pll out frequency 785 * and set PLL. 786 */ 787 if (wm8960->clk_id == WM8960_SYSCLK_AUTO) { 788 /* disable the PLL and using MCLK to provide sysclk */ 789 wm8960_set_pll(component, 0, 0); 790 freq_out = freq_in; 791 } else if (wm8960->sysclk) { 792 freq_out = wm8960->sysclk; 793 } else { 794 dev_err(component->dev, "No SYSCLK configured\n"); 795 return -EINVAL; 796 } 797 798 if (wm8960->clk_id != WM8960_SYSCLK_PLL) { 799 ret = wm8960_configure_sysclk(wm8960, freq_out, &i, &j, &k); 800 if (ret >= 0) { 801 goto configure_clock; 802 } else if (wm8960->clk_id != WM8960_SYSCLK_AUTO) { 803 dev_err(component->dev, "failed to configure clock\n"); 804 return -EINVAL; 805 } 806 } 807 808 freq_out = wm8960_configure_pll(component, freq_in, &i, &j, &k); 809 if (freq_out < 0) { 810 dev_err(component->dev, "failed to configure clock via PLL\n"); 811 return freq_out; 812 } 813 wm8960_set_pll(component, freq_in, freq_out); 814 815 configure_clock: 816 /* configure sysclk clock */ 817 snd_soc_component_update_bits(component, WM8960_CLOCK1, 3 << 1, i << 1); 818 819 /* configure frame clock */ 820 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 3, j << 3); 821 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 6, j << 6); 822 823 /* configure bit clock */ 824 snd_soc_component_update_bits(component, WM8960_CLOCK2, 0xf, k); 825 826 return 0; 827 } 828 wm8960_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)829 static int wm8960_hw_params(struct snd_pcm_substream *substream, 830 struct snd_pcm_hw_params *params, 831 struct snd_soc_dai *dai) 832 { 833 struct snd_soc_component *component = dai->component; 834 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 835 u16 iface = snd_soc_component_read(component, WM8960_IFACE1) & 0xfff3; 836 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 837 int i; 838 839 wm8960->bclk = snd_soc_params_to_bclk(params); 840 if (params_channels(params) == 1) 841 wm8960->bclk *= 2; 842 843 /* bit size */ 844 switch (params_width(params)) { 845 case 16: 846 break; 847 case 20: 848 iface |= 0x0004; 849 break; 850 case 24: 851 iface |= 0x0008; 852 break; 853 case 32: 854 /* right justify mode does not support 32 word length */ 855 if ((iface & 0x3) != 0) { 856 iface |= 0x000c; 857 break; 858 } 859 fallthrough; 860 default: 861 dev_err(component->dev, "unsupported width %d\n", 862 params_width(params)); 863 return -EINVAL; 864 } 865 866 wm8960->lrclk = params_rate(params); 867 /* Update filters for the new rate */ 868 if (tx) { 869 wm8960_set_deemph(component); 870 } else { 871 for (i = 0; i < ARRAY_SIZE(alc_rates); i++) 872 if (alc_rates[i].rate == params_rate(params)) 873 snd_soc_component_update_bits(component, 874 WM8960_ADDCTL3, 0x7, 875 alc_rates[i].val); 876 } 877 878 /* set iface */ 879 snd_soc_component_write(component, WM8960_IFACE1, iface); 880 881 wm8960->is_stream_in_use[tx] = true; 882 883 if (!wm8960->is_stream_in_use[!tx]) 884 return wm8960_configure_clocking(component); 885 886 return 0; 887 } 888 wm8960_hw_free(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)889 static int wm8960_hw_free(struct snd_pcm_substream *substream, 890 struct snd_soc_dai *dai) 891 { 892 struct snd_soc_component *component = dai->component; 893 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 894 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 895 896 wm8960->is_stream_in_use[tx] = false; 897 898 return 0; 899 } 900 wm8960_mute(struct snd_soc_dai * dai,int mute,int direction)901 static int wm8960_mute(struct snd_soc_dai *dai, int mute, int direction) 902 { 903 struct snd_soc_component *component = dai->component; 904 905 if (mute) 906 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0x8); 907 else 908 snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0); 909 return 0; 910 } 911 wm8960_set_bias_level_out3(struct snd_soc_component * component,enum snd_soc_bias_level level)912 static int wm8960_set_bias_level_out3(struct snd_soc_component *component, 913 enum snd_soc_bias_level level) 914 { 915 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 916 u16 pm2 = snd_soc_component_read(component, WM8960_POWER2); 917 int ret; 918 ktime_t tout; 919 920 switch (level) { 921 case SND_SOC_BIAS_ON: 922 break; 923 924 case SND_SOC_BIAS_PREPARE: 925 switch (snd_soc_component_get_bias_level(component)) { 926 case SND_SOC_BIAS_STANDBY: 927 if (!IS_ERR(wm8960->mclk)) { 928 ret = clk_prepare_enable(wm8960->mclk); 929 if (ret) { 930 dev_err(component->dev, 931 "Failed to enable MCLK: %d\n", 932 ret); 933 return ret; 934 } 935 } 936 937 ret = wm8960_configure_clocking(component); 938 if (ret) 939 return ret; 940 941 /* Set VMID to 2x50k */ 942 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x80); 943 break; 944 945 case SND_SOC_BIAS_ON: 946 /* 947 * If it's sysclk auto mode, and the pll is enabled, 948 * disable the pll 949 */ 950 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 951 wm8960_set_pll(component, 0, 0); 952 953 if (!IS_ERR(wm8960->mclk)) 954 clk_disable_unprepare(wm8960->mclk); 955 break; 956 957 default: 958 break; 959 } 960 961 break; 962 963 case SND_SOC_BIAS_STANDBY: 964 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 965 /* ensure discharge is complete */ 966 tout = WM8960_DSCH_TOUT - ktime_ms_delta(ktime_get(), wm8960->dsch_start); 967 if (tout > 0) 968 msleep(tout); 969 970 regcache_sync(wm8960->regmap); 971 972 /* Enable anti-pop features */ 973 snd_soc_component_write(component, WM8960_APOP1, 974 WM8960_POBCTRL | WM8960_SOFT_ST | 975 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 976 977 /* Enable & ramp VMID at 2x50k */ 978 snd_soc_component_update_bits(component, WM8960_POWER1, 0x80, 0x80); 979 msleep(100); 980 981 /* Enable VREF */ 982 snd_soc_component_update_bits(component, WM8960_POWER1, WM8960_VREF, 983 WM8960_VREF); 984 985 /* Disable anti-pop features */ 986 snd_soc_component_write(component, WM8960_APOP1, WM8960_BUFIOEN); 987 } 988 989 /* Set VMID to 2x250k */ 990 snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x100); 991 break; 992 993 case SND_SOC_BIAS_OFF: 994 /* Enable anti-pop features */ 995 snd_soc_component_write(component, WM8960_APOP1, 996 WM8960_POBCTRL | WM8960_SOFT_ST | 997 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 998 999 /* Disable VMID and VREF, mark discharge */ 1000 snd_soc_component_write(component, WM8960_POWER1, 0); 1001 wm8960->dsch_start = ktime_get(); 1002 break; 1003 } 1004 1005 return 0; 1006 } 1007 wm8960_set_bias_level_capless(struct snd_soc_component * component,enum snd_soc_bias_level level)1008 static int wm8960_set_bias_level_capless(struct snd_soc_component *component, 1009 enum snd_soc_bias_level level) 1010 { 1011 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1012 u16 pm2 = snd_soc_component_read(component, WM8960_POWER2); 1013 int reg, ret; 1014 1015 switch (level) { 1016 case SND_SOC_BIAS_ON: 1017 break; 1018 1019 case SND_SOC_BIAS_PREPARE: 1020 switch (snd_soc_component_get_bias_level(component)) { 1021 case SND_SOC_BIAS_STANDBY: 1022 /* Enable anti pop mode */ 1023 snd_soc_component_update_bits(component, WM8960_APOP1, 1024 WM8960_POBCTRL | WM8960_SOFT_ST | 1025 WM8960_BUFDCOPEN, 1026 WM8960_POBCTRL | WM8960_SOFT_ST | 1027 WM8960_BUFDCOPEN); 1028 1029 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */ 1030 reg = 0; 1031 if (wm8960->lout1 && wm8960->lout1->power) 1032 reg |= WM8960_PWR2_LOUT1; 1033 if (wm8960->rout1 && wm8960->rout1->power) 1034 reg |= WM8960_PWR2_ROUT1; 1035 if (wm8960->out3 && wm8960->out3->power) 1036 reg |= WM8960_PWR2_OUT3; 1037 snd_soc_component_update_bits(component, WM8960_POWER2, 1038 WM8960_PWR2_LOUT1 | 1039 WM8960_PWR2_ROUT1 | 1040 WM8960_PWR2_OUT3, reg); 1041 1042 /* Enable VMID at 2*50k */ 1043 snd_soc_component_update_bits(component, WM8960_POWER1, 1044 WM8960_VMID_MASK, 0x80); 1045 1046 /* Ramp */ 1047 msleep(100); 1048 1049 /* Enable VREF */ 1050 snd_soc_component_update_bits(component, WM8960_POWER1, 1051 WM8960_VREF, WM8960_VREF); 1052 1053 msleep(100); 1054 1055 if (!IS_ERR(wm8960->mclk)) { 1056 ret = clk_prepare_enable(wm8960->mclk); 1057 if (ret) { 1058 dev_err(component->dev, 1059 "Failed to enable MCLK: %d\n", 1060 ret); 1061 return ret; 1062 } 1063 } 1064 1065 ret = wm8960_configure_clocking(component); 1066 if (ret) 1067 return ret; 1068 1069 break; 1070 1071 case SND_SOC_BIAS_ON: 1072 /* 1073 * If it's sysclk auto mode, and the pll is enabled, 1074 * disable the pll 1075 */ 1076 if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1)) 1077 wm8960_set_pll(component, 0, 0); 1078 1079 if (!IS_ERR(wm8960->mclk)) 1080 clk_disable_unprepare(wm8960->mclk); 1081 1082 /* Enable anti-pop mode */ 1083 snd_soc_component_update_bits(component, WM8960_APOP1, 1084 WM8960_POBCTRL | WM8960_SOFT_ST | 1085 WM8960_BUFDCOPEN, 1086 WM8960_POBCTRL | WM8960_SOFT_ST | 1087 WM8960_BUFDCOPEN); 1088 1089 /* Disable VMID and VREF */ 1090 snd_soc_component_update_bits(component, WM8960_POWER1, 1091 WM8960_VREF | WM8960_VMID_MASK, 0); 1092 break; 1093 1094 case SND_SOC_BIAS_OFF: 1095 regcache_sync(wm8960->regmap); 1096 break; 1097 default: 1098 break; 1099 } 1100 break; 1101 1102 case SND_SOC_BIAS_STANDBY: 1103 switch (snd_soc_component_get_bias_level(component)) { 1104 case SND_SOC_BIAS_PREPARE: 1105 /* Disable HP discharge */ 1106 snd_soc_component_update_bits(component, WM8960_APOP2, 1107 WM8960_DISOP | WM8960_DRES_MASK, 1108 0); 1109 1110 /* Disable anti-pop features */ 1111 snd_soc_component_update_bits(component, WM8960_APOP1, 1112 WM8960_POBCTRL | WM8960_SOFT_ST | 1113 WM8960_BUFDCOPEN, 1114 WM8960_POBCTRL | WM8960_SOFT_ST | 1115 WM8960_BUFDCOPEN); 1116 break; 1117 1118 default: 1119 break; 1120 } 1121 break; 1122 1123 case SND_SOC_BIAS_OFF: 1124 break; 1125 } 1126 1127 return 0; 1128 } 1129 1130 /* PLL divisors */ 1131 struct _pll_div { 1132 u32 pre_div:1; 1133 u32 n:4; 1134 u32 k:24; 1135 }; 1136 is_pll_freq_available(unsigned int source,unsigned int target)1137 static bool is_pll_freq_available(unsigned int source, unsigned int target) 1138 { 1139 unsigned int Ndiv; 1140 1141 if (source == 0 || target == 0) 1142 return false; 1143 1144 /* Scale up target to PLL operating frequency */ 1145 target *= 4; 1146 Ndiv = target / source; 1147 1148 if (Ndiv < 6) { 1149 source >>= 1; 1150 Ndiv = target / source; 1151 } 1152 1153 if ((Ndiv < 6) || (Ndiv > 12)) 1154 return false; 1155 1156 return true; 1157 } 1158 1159 /* The size in bits of the pll divide multiplied by 10 1160 * to allow rounding later */ 1161 #define FIXED_PLL_SIZE ((1 << 24) * 10) 1162 pll_factors(unsigned int source,unsigned int target,struct _pll_div * pll_div)1163 static int pll_factors(unsigned int source, unsigned int target, 1164 struct _pll_div *pll_div) 1165 { 1166 unsigned long long Kpart; 1167 unsigned int K, Ndiv, Nmod; 1168 1169 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); 1170 1171 /* Scale up target to PLL operating frequency */ 1172 target *= 4; 1173 1174 Ndiv = target / source; 1175 if (Ndiv < 6) { 1176 source >>= 1; 1177 pll_div->pre_div = 1; 1178 Ndiv = target / source; 1179 } else 1180 pll_div->pre_div = 0; 1181 1182 if ((Ndiv < 6) || (Ndiv > 12)) { 1183 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); 1184 return -EINVAL; 1185 } 1186 1187 pll_div->n = Ndiv; 1188 Nmod = target % source; 1189 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 1190 1191 do_div(Kpart, source); 1192 1193 K = Kpart & 0xFFFFFFFF; 1194 1195 /* Check if we need to round */ 1196 if ((K % 10) >= 5) 1197 K += 5; 1198 1199 /* Move down to proper range now rounding is done */ 1200 K /= 10; 1201 1202 pll_div->k = K; 1203 1204 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", 1205 pll_div->n, pll_div->k, pll_div->pre_div); 1206 1207 return 0; 1208 } 1209 wm8960_set_pll(struct snd_soc_component * component,unsigned int freq_in,unsigned int freq_out)1210 static int wm8960_set_pll(struct snd_soc_component *component, 1211 unsigned int freq_in, unsigned int freq_out) 1212 { 1213 u16 reg; 1214 static struct _pll_div pll_div; 1215 int ret; 1216 1217 if (freq_in && freq_out) { 1218 ret = pll_factors(freq_in, freq_out, &pll_div); 1219 if (ret != 0) 1220 return ret; 1221 } 1222 1223 /* Disable the PLL: even if we are changing the frequency the 1224 * PLL needs to be disabled while we do so. */ 1225 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0); 1226 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0); 1227 1228 if (!freq_in || !freq_out) 1229 return 0; 1230 1231 reg = snd_soc_component_read(component, WM8960_PLL1) & ~0x3f; 1232 reg |= pll_div.pre_div << 4; 1233 reg |= pll_div.n; 1234 1235 if (pll_div.k) { 1236 reg |= 0x20; 1237 1238 snd_soc_component_write(component, WM8960_PLL2, (pll_div.k >> 16) & 0xff); 1239 snd_soc_component_write(component, WM8960_PLL3, (pll_div.k >> 8) & 0xff); 1240 snd_soc_component_write(component, WM8960_PLL4, pll_div.k & 0xff); 1241 } 1242 snd_soc_component_write(component, WM8960_PLL1, reg); 1243 1244 /* Turn it on */ 1245 snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0x1); 1246 msleep(250); 1247 snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0x1); 1248 1249 return 0; 1250 } 1251 wm8960_set_dai_pll(struct snd_soc_dai * codec_dai,int pll_id,int source,unsigned int freq_in,unsigned int freq_out)1252 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 1253 int source, unsigned int freq_in, unsigned int freq_out) 1254 { 1255 struct snd_soc_component *component = codec_dai->component; 1256 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1257 1258 wm8960->freq_in = freq_in; 1259 1260 if (pll_id == WM8960_SYSCLK_AUTO) 1261 return 0; 1262 1263 return wm8960_set_pll(component, freq_in, freq_out); 1264 } 1265 wm8960_set_dai_clkdiv(struct snd_soc_dai * codec_dai,int div_id,int div)1266 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 1267 int div_id, int div) 1268 { 1269 struct snd_soc_component *component = codec_dai->component; 1270 u16 reg; 1271 1272 switch (div_id) { 1273 case WM8960_SYSCLKDIV: 1274 reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1f9; 1275 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1276 break; 1277 case WM8960_DACDIV: 1278 reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1c7; 1279 snd_soc_component_write(component, WM8960_CLOCK1, reg | div); 1280 break; 1281 case WM8960_OPCLKDIV: 1282 reg = snd_soc_component_read(component, WM8960_PLL1) & 0x03f; 1283 snd_soc_component_write(component, WM8960_PLL1, reg | div); 1284 break; 1285 case WM8960_DCLKDIV: 1286 reg = snd_soc_component_read(component, WM8960_CLOCK2) & 0x03f; 1287 snd_soc_component_write(component, WM8960_CLOCK2, reg | div); 1288 break; 1289 case WM8960_TOCLKSEL: 1290 reg = snd_soc_component_read(component, WM8960_ADDCTL1) & 0x1fd; 1291 snd_soc_component_write(component, WM8960_ADDCTL1, reg | div); 1292 break; 1293 default: 1294 return -EINVAL; 1295 } 1296 1297 return 0; 1298 } 1299 wm8960_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)1300 static int wm8960_set_bias_level(struct snd_soc_component *component, 1301 enum snd_soc_bias_level level) 1302 { 1303 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1304 1305 return wm8960->set_bias_level(component, level); 1306 } 1307 wm8960_set_dai_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)1308 static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, 1309 unsigned int freq, int dir) 1310 { 1311 struct snd_soc_component *component = dai->component; 1312 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1313 1314 switch (clk_id) { 1315 case WM8960_SYSCLK_MCLK: 1316 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1317 0x1, WM8960_SYSCLK_MCLK); 1318 break; 1319 case WM8960_SYSCLK_PLL: 1320 snd_soc_component_update_bits(component, WM8960_CLOCK1, 1321 0x1, WM8960_SYSCLK_PLL); 1322 break; 1323 case WM8960_SYSCLK_AUTO: 1324 break; 1325 default: 1326 return -EINVAL; 1327 } 1328 1329 wm8960->sysclk = freq; 1330 wm8960->clk_id = clk_id; 1331 1332 return 0; 1333 } 1334 1335 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 1336 1337 #define WM8960_FORMATS \ 1338 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 1339 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 1340 1341 static const struct snd_soc_dai_ops wm8960_dai_ops = { 1342 .hw_params = wm8960_hw_params, 1343 .hw_free = wm8960_hw_free, 1344 .mute_stream = wm8960_mute, 1345 .set_fmt = wm8960_set_dai_fmt, 1346 .set_clkdiv = wm8960_set_dai_clkdiv, 1347 .set_pll = wm8960_set_dai_pll, 1348 .set_sysclk = wm8960_set_dai_sysclk, 1349 .no_capture_mute = 1, 1350 }; 1351 1352 static struct snd_soc_dai_driver wm8960_dai = { 1353 .name = "wm8960-hifi", 1354 .playback = { 1355 .stream_name = "Playback", 1356 .channels_min = 1, 1357 .channels_max = 2, 1358 .rates = WM8960_RATES, 1359 .formats = WM8960_FORMATS,}, 1360 .capture = { 1361 .stream_name = "Capture", 1362 .channels_min = 1, 1363 .channels_max = 2, 1364 .rates = WM8960_RATES, 1365 .formats = WM8960_FORMATS,}, 1366 .ops = &wm8960_dai_ops, 1367 .symmetric_rate = 1, 1368 }; 1369 wm8960_probe(struct snd_soc_component * component)1370 static int wm8960_probe(struct snd_soc_component *component) 1371 { 1372 struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); 1373 struct wm8960_data *pdata = &wm8960->pdata; 1374 1375 if (pdata->capless) 1376 wm8960->set_bias_level = wm8960_set_bias_level_capless; 1377 else 1378 wm8960->set_bias_level = wm8960_set_bias_level_out3; 1379 1380 snd_soc_add_component_controls(component, wm8960_snd_controls, 1381 ARRAY_SIZE(wm8960_snd_controls)); 1382 wm8960_add_widgets(component); 1383 1384 return 0; 1385 } 1386 1387 static const struct snd_soc_component_driver soc_component_dev_wm8960 = { 1388 .probe = wm8960_probe, 1389 .set_bias_level = wm8960_set_bias_level, 1390 .suspend_bias_off = 1, 1391 .idle_bias_on = 1, 1392 .use_pmdown_time = 1, 1393 .endianness = 1, 1394 }; 1395 1396 static const struct regmap_config wm8960_regmap = { 1397 .reg_bits = 7, 1398 .val_bits = 9, 1399 .max_register = WM8960_PLL4, 1400 1401 .reg_defaults = wm8960_reg_defaults, 1402 .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults), 1403 .cache_type = REGCACHE_MAPLE, 1404 1405 .volatile_reg = wm8960_volatile, 1406 }; 1407 wm8960_set_pdata_from_of(struct i2c_client * i2c,struct wm8960_data * pdata)1408 static void wm8960_set_pdata_from_of(struct i2c_client *i2c, 1409 struct wm8960_data *pdata) 1410 { 1411 const struct device_node *np = i2c->dev.of_node; 1412 1413 if (of_property_read_bool(np, "wlf,capless")) 1414 pdata->capless = true; 1415 1416 if (of_property_read_bool(np, "wlf,shared-lrclk")) 1417 pdata->shared_lrclk = true; 1418 1419 of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_cfg, 1420 ARRAY_SIZE(pdata->gpio_cfg)); 1421 1422 of_property_read_u32_array(np, "wlf,hp-cfg", pdata->hp_cfg, 1423 ARRAY_SIZE(pdata->hp_cfg)); 1424 } 1425 wm8960_i2c_probe(struct i2c_client * i2c)1426 static int wm8960_i2c_probe(struct i2c_client *i2c) 1427 { 1428 struct wm8960_data *pdata = dev_get_platdata(&i2c->dev); 1429 struct wm8960_priv *wm8960; 1430 unsigned int i; 1431 int ret; 1432 u8 val; 1433 1434 wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv), 1435 GFP_KERNEL); 1436 if (wm8960 == NULL) 1437 return -ENOMEM; 1438 1439 wm8960->mclk = devm_clk_get(&i2c->dev, "mclk"); 1440 if (IS_ERR(wm8960->mclk)) { 1441 if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER) 1442 return -EPROBE_DEFER; 1443 } else { 1444 ret = clk_get_rate(wm8960->mclk); 1445 if (ret >= 0) { 1446 wm8960->freq_in = ret; 1447 } else { 1448 dev_err(&i2c->dev, "Failed to read MCLK rate: %d\n", 1449 ret); 1450 } 1451 } 1452 1453 for (i = 0; i < ARRAY_SIZE(wm8960->supplies); i++) 1454 wm8960->supplies[i].supply = wm8960_supply_names[i]; 1455 1456 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8960->supplies), 1457 wm8960->supplies); 1458 if (ret < 0) { 1459 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); 1460 return ret; 1461 } 1462 1463 ret = regulator_bulk_enable(ARRAY_SIZE(wm8960->supplies), 1464 wm8960->supplies); 1465 if (ret < 0) { 1466 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret); 1467 return ret; 1468 } 1469 1470 wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap); 1471 if (IS_ERR(wm8960->regmap)) { 1472 ret = PTR_ERR(wm8960->regmap); 1473 goto bulk_disable; 1474 } 1475 1476 if (pdata) 1477 memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data)); 1478 else if (i2c->dev.of_node) 1479 wm8960_set_pdata_from_of(i2c, &wm8960->pdata); 1480 1481 ret = i2c_master_recv(i2c, &val, sizeof(val)); 1482 if (ret >= 0) { 1483 dev_err(&i2c->dev, "Not wm8960, wm8960 reg can not read by i2c\n"); 1484 ret = -EINVAL; 1485 goto bulk_disable; 1486 } 1487 1488 ret = wm8960_reset(wm8960->regmap); 1489 if (ret != 0) { 1490 dev_err(&i2c->dev, "Failed to issue reset\n"); 1491 goto bulk_disable; 1492 } 1493 1494 if (wm8960->pdata.shared_lrclk) { 1495 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 1496 0x4, 0x4); 1497 if (ret != 0) { 1498 dev_err(&i2c->dev, "Failed to enable LRCM: %d\n", 1499 ret); 1500 goto bulk_disable; 1501 } 1502 } 1503 1504 /* Latch the update bits */ 1505 regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100); 1506 regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100); 1507 regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100); 1508 regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100); 1509 regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100); 1510 regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100); 1511 regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100); 1512 regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100); 1513 regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100); 1514 regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100); 1515 1516 /* ADCLRC pin configured as GPIO. */ 1517 regmap_update_bits(wm8960->regmap, WM8960_IFACE2, 1 << 6, 1518 wm8960->pdata.gpio_cfg[0] << 6); 1519 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 0xF << 4, 1520 wm8960->pdata.gpio_cfg[1] << 4); 1521 1522 /* Enable headphone jack detect */ 1523 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 3 << 2, 1524 wm8960->pdata.hp_cfg[0] << 2); 1525 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 3 << 5, 1526 wm8960->pdata.hp_cfg[1] << 5); 1527 regmap_update_bits(wm8960->regmap, WM8960_ADDCTL1, 3, 1528 wm8960->pdata.hp_cfg[2]); 1529 1530 i2c_set_clientdata(i2c, wm8960); 1531 1532 ret = devm_snd_soc_register_component(&i2c->dev, 1533 &soc_component_dev_wm8960, &wm8960_dai, 1); 1534 if (ret) 1535 goto bulk_disable; 1536 1537 return 0; 1538 1539 bulk_disable: 1540 regulator_bulk_disable(ARRAY_SIZE(wm8960->supplies), wm8960->supplies); 1541 return ret; 1542 } 1543 wm8960_i2c_remove(struct i2c_client * client)1544 static void wm8960_i2c_remove(struct i2c_client *client) 1545 { 1546 struct wm8960_priv *wm8960 = i2c_get_clientdata(client); 1547 1548 regulator_bulk_disable(ARRAY_SIZE(wm8960->supplies), wm8960->supplies); 1549 } 1550 1551 static const struct i2c_device_id wm8960_i2c_id[] = { 1552 { "wm8960", 0 }, 1553 { } 1554 }; 1555 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); 1556 1557 #if defined(CONFIG_OF) 1558 static const struct of_device_id wm8960_of_match[] = { 1559 { .compatible = "wlf,wm8960", }, 1560 { } 1561 }; 1562 MODULE_DEVICE_TABLE(of, wm8960_of_match); 1563 #endif 1564 1565 #if defined(CONFIG_ACPI) 1566 static const struct acpi_device_id wm8960_acpi_match[] = { 1567 { "1AEC8960", 0 }, /* Wolfson PCI ID + part ID */ 1568 { "10138960", 0 }, /* Cirrus Logic PCI ID + part ID */ 1569 { }, 1570 }; 1571 MODULE_DEVICE_TABLE(acpi, wm8960_acpi_match); 1572 #endif 1573 1574 static struct i2c_driver wm8960_i2c_driver = { 1575 .driver = { 1576 .name = "wm8960", 1577 .of_match_table = of_match_ptr(wm8960_of_match), 1578 .acpi_match_table = ACPI_PTR(wm8960_acpi_match), 1579 }, 1580 .probe = wm8960_i2c_probe, 1581 .remove = wm8960_i2c_remove, 1582 .id_table = wm8960_i2c_id, 1583 }; 1584 1585 module_i2c_driver(wm8960_i2c_driver); 1586 1587 MODULE_DESCRIPTION("ASoC WM8960 driver"); 1588 MODULE_AUTHOR("Liam Girdwood"); 1589 MODULE_LICENSE("GPL"); 1590