1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Wolfson WM97xx -- Core device 4 * 5 * Copyright (C) 2017 Robert Jarzmik 6 * 7 * Features: 8 * - an AC97 audio codec 9 * - a touchscreen driver 10 * - a GPIO block 11 */ 12 13 #include <linux/device.h> 14 #include <linux/mfd/core.h> 15 #include <linux/mfd/wm97xx.h> 16 #include <linux/module.h> 17 #include <linux/regmap.h> 18 #include <linux/slab.h> 19 #include <linux/wm97xx.h> 20 #include <sound/ac97/codec.h> 21 #include <sound/ac97/compat.h> 22 23 #define WM9705_VENDOR_ID 0x574d4c05 24 #define WM9712_VENDOR_ID 0x574d4c12 25 #define WM9713_VENDOR_ID 0x574d4c13 26 #define WM97xx_VENDOR_ID_MASK 0xffffffff 27 28 struct wm97xx_priv { 29 struct regmap *regmap; 30 struct snd_ac97 *ac97; 31 struct device *dev; 32 struct wm97xx_platform_data codec_pdata; 33 }; 34 35 static bool wm97xx_readable_reg(struct device *dev, unsigned int reg) 36 { 37 switch (reg) { 38 case AC97_RESET ... AC97_PCM_SURR_DAC_RATE: 39 case AC97_PCM_LR_ADC_RATE: 40 case AC97_CENTER_LFE_MASTER: 41 case AC97_SPDIF ... AC97_LINE1_LEVEL: 42 case AC97_GPIO_CFG ... 0x5c: 43 case AC97_CODEC_CLASS_REV ... AC97_PCI_SID: 44 case 0x74 ... AC97_VENDOR_ID2: 45 return true; 46 default: 47 return false; 48 } 49 } 50 51 static bool wm97xx_writeable_reg(struct device *dev, unsigned int reg) 52 { 53 switch (reg) { 54 case AC97_VENDOR_ID1: 55 case AC97_VENDOR_ID2: 56 return false; 57 default: 58 return wm97xx_readable_reg(dev, reg); 59 } 60 } 61 62 static const struct reg_default wm9705_reg_defaults[] = { 63 { 0x02, 0x8000 }, 64 { 0x04, 0x8000 }, 65 { 0x06, 0x8000 }, 66 { 0x0a, 0x8000 }, 67 { 0x0c, 0x8008 }, 68 { 0x0e, 0x8008 }, 69 { 0x10, 0x8808 }, 70 { 0x12, 0x8808 }, 71 { 0x14, 0x8808 }, 72 { 0x16, 0x8808 }, 73 { 0x18, 0x8808 }, 74 { 0x1a, 0x0000 }, 75 { 0x1c, 0x8000 }, 76 { 0x20, 0x0000 }, 77 { 0x22, 0x0000 }, 78 { 0x26, 0x000f }, 79 { 0x28, 0x0605 }, 80 { 0x2a, 0x0000 }, 81 { 0x2c, 0xbb80 }, 82 { 0x32, 0xbb80 }, 83 { 0x34, 0x2000 }, 84 { 0x5a, 0x0000 }, 85 { 0x5c, 0x0000 }, 86 { 0x72, 0x0808 }, 87 { 0x74, 0x0000 }, 88 { 0x76, 0x0006 }, 89 { 0x78, 0x0000 }, 90 { 0x7a, 0x0000 }, 91 }; 92 93 static const struct regmap_config wm9705_regmap_config = { 94 .reg_bits = 16, 95 .reg_stride = 2, 96 .val_bits = 16, 97 .max_register = 0x7e, 98 .cache_type = REGCACHE_MAPLE, 99 100 .reg_defaults = wm9705_reg_defaults, 101 .num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults), 102 .volatile_reg = regmap_ac97_default_volatile, 103 .readable_reg = wm97xx_readable_reg, 104 .writeable_reg = wm97xx_writeable_reg, 105 }; 106 107 static struct mfd_cell wm9705_cells[] = { 108 { .name = "wm9705-codec", }, 109 { .name = "wm97xx-ts", }, 110 }; 111 112 static bool wm9712_volatile_reg(struct device *dev, unsigned int reg) 113 { 114 switch (reg) { 115 case AC97_REC_GAIN: 116 return true; 117 default: 118 return regmap_ac97_default_volatile(dev, reg); 119 } 120 } 121 122 static const struct reg_default wm9712_reg_defaults[] = { 123 { 0x02, 0x8000 }, 124 { 0x04, 0x8000 }, 125 { 0x06, 0x8000 }, 126 { 0x08, 0x0f0f }, 127 { 0x0a, 0xaaa0 }, 128 { 0x0c, 0xc008 }, 129 { 0x0e, 0x6808 }, 130 { 0x10, 0xe808 }, 131 { 0x12, 0xaaa0 }, 132 { 0x14, 0xad00 }, 133 { 0x16, 0x8000 }, 134 { 0x18, 0xe808 }, 135 { 0x1a, 0x3000 }, 136 { 0x1c, 0x8000 }, 137 { 0x20, 0x0000 }, 138 { 0x22, 0x0000 }, 139 { 0x26, 0x000f }, 140 { 0x28, 0x0605 }, 141 { 0x2a, 0x0410 }, 142 { 0x2c, 0xbb80 }, 143 { 0x2e, 0xbb80 }, 144 { 0x32, 0xbb80 }, 145 { 0x34, 0x2000 }, 146 { 0x4c, 0xf83e }, 147 { 0x4e, 0xffff }, 148 { 0x50, 0x0000 }, 149 { 0x52, 0x0000 }, 150 { 0x56, 0xf83e }, 151 { 0x58, 0x0008 }, 152 { 0x5c, 0x0000 }, 153 { 0x60, 0xb032 }, 154 { 0x62, 0x3e00 }, 155 { 0x64, 0x0000 }, 156 { 0x76, 0x0006 }, 157 { 0x78, 0x0001 }, 158 { 0x7a, 0x0000 }, 159 }; 160 161 static const struct regmap_config wm9712_regmap_config = { 162 .reg_bits = 16, 163 .reg_stride = 2, 164 .val_bits = 16, 165 .max_register = 0x7e, 166 .cache_type = REGCACHE_MAPLE, 167 168 .reg_defaults = wm9712_reg_defaults, 169 .num_reg_defaults = ARRAY_SIZE(wm9712_reg_defaults), 170 .volatile_reg = wm9712_volatile_reg, 171 .readable_reg = wm97xx_readable_reg, 172 .writeable_reg = wm97xx_writeable_reg, 173 }; 174 175 static struct mfd_cell wm9712_cells[] = { 176 { .name = "wm9712-codec", }, 177 { .name = "wm97xx-ts", }, 178 }; 179 180 static const struct reg_default wm9713_reg_defaults[] = { 181 { 0x02, 0x8080 }, /* Speaker Output Volume */ 182 { 0x04, 0x8080 }, /* Headphone Output Volume */ 183 { 0x06, 0x8080 }, /* Out3/OUT4 Volume */ 184 { 0x08, 0xc880 }, /* Mono Volume */ 185 { 0x0a, 0xe808 }, /* LINEIN Volume */ 186 { 0x0c, 0xe808 }, /* DAC PGA Volume */ 187 { 0x0e, 0x0808 }, /* MIC PGA Volume */ 188 { 0x10, 0x00da }, /* MIC Routing Control */ 189 { 0x12, 0x8000 }, /* Record PGA Volume */ 190 { 0x14, 0xd600 }, /* Record Routing */ 191 { 0x16, 0xaaa0 }, /* PCBEEP Volume */ 192 { 0x18, 0xaaa0 }, /* VxDAC Volume */ 193 { 0x1a, 0xaaa0 }, /* AUXDAC Volume */ 194 { 0x1c, 0x0000 }, /* Output PGA Mux */ 195 { 0x1e, 0x0000 }, /* DAC 3D control */ 196 { 0x20, 0x0f0f }, /* DAC Tone Control*/ 197 { 0x22, 0x0040 }, /* MIC Input Select & Bias */ 198 { 0x24, 0x0000 }, /* Output Volume Mapping & Jack */ 199 { 0x26, 0x7f00 }, /* Powerdown Ctrl/Stat*/ 200 { 0x28, 0x0405 }, /* Extended Audio ID */ 201 { 0x2a, 0x0410 }, /* Extended Audio Start/Ctrl */ 202 { 0x2c, 0xbb80 }, /* Audio DACs Sample Rate */ 203 { 0x2e, 0xbb80 }, /* AUXDAC Sample Rate */ 204 { 0x32, 0xbb80 }, /* Audio ADCs Sample Rate */ 205 { 0x36, 0x4523 }, /* PCM codec control */ 206 { 0x3a, 0x2000 }, /* SPDIF control */ 207 { 0x3c, 0xfdff }, /* Powerdown 1 */ 208 { 0x3e, 0xffff }, /* Powerdown 2 */ 209 { 0x40, 0x0000 }, /* General Purpose */ 210 { 0x42, 0x0000 }, /* Fast Power-Up Control */ 211 { 0x44, 0x0080 }, /* MCLK/PLL Control */ 212 { 0x46, 0x0000 }, /* MCLK/PLL Control */ 213 214 { 0x4c, 0xfffe }, /* GPIO Pin Configuration */ 215 { 0x4e, 0xffff }, /* GPIO Pin Polarity / Type */ 216 { 0x50, 0x0000 }, /* GPIO Pin Sticky */ 217 { 0x52, 0x0000 }, /* GPIO Pin Wake-Up */ 218 /* GPIO Pin Status */ 219 { 0x56, 0xfffe }, /* GPIO Pin Sharing */ 220 { 0x58, 0x4000 }, /* GPIO PullUp/PullDown */ 221 { 0x5a, 0x0000 }, /* Additional Functions 1 */ 222 { 0x5c, 0x0000 }, /* Additional Functions 2 */ 223 { 0x60, 0xb032 }, /* ALC Control */ 224 { 0x62, 0x3e00 }, /* ALC / Noise Gate Control */ 225 { 0x64, 0x0000 }, /* AUXDAC input control */ 226 { 0x74, 0x0000 }, /* Digitiser Reg 1 */ 227 { 0x76, 0x0006 }, /* Digitiser Reg 2 */ 228 { 0x78, 0x0001 }, /* Digitiser Reg 3 */ 229 { 0x7a, 0x0000 }, /* Digitiser Read Back */ 230 }; 231 232 static const struct regmap_config wm9713_regmap_config = { 233 .reg_bits = 16, 234 .reg_stride = 2, 235 .val_bits = 16, 236 .max_register = 0x7e, 237 .cache_type = REGCACHE_MAPLE, 238 239 .reg_defaults = wm9713_reg_defaults, 240 .num_reg_defaults = ARRAY_SIZE(wm9713_reg_defaults), 241 .volatile_reg = regmap_ac97_default_volatile, 242 .readable_reg = wm97xx_readable_reg, 243 .writeable_reg = wm97xx_writeable_reg, 244 }; 245 246 static struct mfd_cell wm9713_cells[] = { 247 { .name = "wm9713-codec", }, 248 { .name = "wm97xx-ts", }, 249 }; 250 251 static int wm97xx_ac97_probe(struct ac97_codec_device *adev) 252 { 253 struct wm97xx_priv *wm97xx; 254 const struct regmap_config *config; 255 struct wm97xx_platform_data *codec_pdata; 256 struct mfd_cell *cells; 257 int ret = -ENODEV, nb_cells, i; 258 struct wm97xx_pdata *pdata = snd_ac97_codec_get_platdata(adev); 259 260 wm97xx = devm_kzalloc(ac97_codec_dev2dev(adev), 261 sizeof(*wm97xx), GFP_KERNEL); 262 if (!wm97xx) 263 return -ENOMEM; 264 265 wm97xx->dev = ac97_codec_dev2dev(adev); 266 wm97xx->ac97 = snd_ac97_compat_alloc(adev); 267 if (IS_ERR(wm97xx->ac97)) 268 return PTR_ERR(wm97xx->ac97); 269 270 271 ac97_set_drvdata(adev, wm97xx); 272 dev_info(wm97xx->dev, "wm97xx core found, id=0x%x\n", 273 adev->vendor_id); 274 275 codec_pdata = &wm97xx->codec_pdata; 276 codec_pdata->ac97 = wm97xx->ac97; 277 codec_pdata->batt_pdata = pdata ? pdata->batt_pdata : NULL; 278 279 switch (adev->vendor_id) { 280 case WM9705_VENDOR_ID: 281 config = &wm9705_regmap_config; 282 cells = wm9705_cells; 283 nb_cells = ARRAY_SIZE(wm9705_cells); 284 break; 285 case WM9712_VENDOR_ID: 286 config = &wm9712_regmap_config; 287 cells = wm9712_cells; 288 nb_cells = ARRAY_SIZE(wm9712_cells); 289 break; 290 case WM9713_VENDOR_ID: 291 config = &wm9713_regmap_config; 292 cells = wm9713_cells; 293 nb_cells = ARRAY_SIZE(wm9713_cells); 294 break; 295 default: 296 goto err_free_compat; 297 } 298 299 for (i = 0; i < nb_cells; i++) { 300 cells[i].platform_data = codec_pdata; 301 cells[i].pdata_size = sizeof(*codec_pdata); 302 } 303 304 codec_pdata->regmap = devm_regmap_init_ac97(wm97xx->ac97, config); 305 if (IS_ERR(codec_pdata->regmap)) { 306 ret = PTR_ERR(codec_pdata->regmap); 307 goto err_free_compat; 308 } 309 310 ret = devm_mfd_add_devices(wm97xx->dev, PLATFORM_DEVID_NONE, 311 cells, nb_cells, NULL, 0, NULL); 312 if (ret) 313 goto err_free_compat; 314 315 return ret; 316 317 err_free_compat: 318 snd_ac97_compat_release(wm97xx->ac97); 319 return ret; 320 } 321 322 static void wm97xx_ac97_remove(struct ac97_codec_device *adev) 323 { 324 struct wm97xx_priv *wm97xx = ac97_get_drvdata(adev); 325 326 snd_ac97_compat_release(wm97xx->ac97); 327 } 328 329 static const struct ac97_id wm97xx_ac97_ids[] = { 330 { .id = WM9705_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK }, 331 { .id = WM9712_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK }, 332 { .id = WM9713_VENDOR_ID, .mask = WM97xx_VENDOR_ID_MASK }, 333 { } 334 }; 335 336 static struct ac97_codec_driver wm97xx_ac97_driver = { 337 .driver = { 338 .name = "wm97xx-core", 339 }, 340 .probe = wm97xx_ac97_probe, 341 .remove = wm97xx_ac97_remove, 342 .id_table = wm97xx_ac97_ids, 343 }; 344 345 static int __init wm97xx_module_init(void) 346 { 347 return snd_ac97_codec_driver_register(&wm97xx_ac97_driver); 348 } 349 module_init(wm97xx_module_init); 350 351 static void __exit wm97xx_module_exit(void) 352 { 353 snd_ac97_codec_driver_unregister(&wm97xx_ac97_driver); 354 } 355 module_exit(wm97xx_module_exit); 356 357 MODULE_DESCRIPTION("WM9712, WM9713 core driver"); 358 MODULE_AUTHOR("Robert Jarzmik <robert.jarzmik@free.fr>"); 359 MODULE_LICENSE("GPL"); 360 361