| 1 | /* |
| 2 | * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM |
| 3 | * and audio CODEC devices |
| 4 | * |
| 5 | * Copyright (C) 2005-2006 Texas Instruments, Inc. |
| 6 | * |
| 7 | * Modifications to defer interrupt handling to a kernel thread: |
| 8 | * Copyright (C) 2006 MontaVista Software, Inc. |
| 9 | * |
| 10 | * Based on tlv320aic23.c: |
| 11 | * Copyright (c) by Kai Svahn <kai.svahn@nokia.com> |
| 12 | * |
| 13 | * Code cleanup and modifications to IRQ handler. |
| 14 | * by syed khasim <x0khasim@ti.com> |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License as published by |
| 18 | * the Free Software Foundation; either version 2 of the License, or |
| 19 | * (at your option) any later version. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, |
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | * GNU General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 29 | */ |
| 30 | |
| 31 | #include <linux/init.h> |
| 32 | #include <linux/mutex.h> |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/platform_device.h> |
| 35 | #include <linux/regmap.h> |
| 36 | #include <linux/clk.h> |
| 37 | #include <linux/err.h> |
| 38 | #include <linux/device.h> |
| 39 | #include <linux/of.h> |
| 40 | #include <linux/of_irq.h> |
| 41 | #include <linux/of_platform.h> |
| 42 | #include <linux/irq.h> |
| 43 | #include <linux/irqdomain.h> |
| 44 | |
| 45 | #include <linux/regulator/machine.h> |
| 46 | |
| 47 | #include <linux/i2c.h> |
| 48 | #include <linux/i2c/twl.h> |
| 49 | |
| 50 | /* Register descriptions for audio */ |
| 51 | #include <linux/mfd/twl4030-audio.h> |
| 52 | |
| 53 | #include "twl-core.h" |
| 54 | |
| 55 | /* |
| 56 | * The TWL4030 "Triton 2" is one of a family of a multi-function "Power |
| 57 | * Management and System Companion Device" chips originally designed for |
| 58 | * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, |
| 59 | * often at around 3 Mbit/sec, including for interrupt handling. |
| 60 | * |
| 61 | * This driver core provides genirq support for the interrupts emitted, |
| 62 | * by the various modules, and exports register access primitives. |
| 63 | * |
| 64 | * FIXME this driver currently requires use of the first interrupt line |
| 65 | * (and associated registers). |
| 66 | */ |
| 67 | |
| 68 | #define DRIVER_NAME "twl" |
| 69 | |
| 70 | /* Triton Core internal information (BEGIN) */ |
| 71 | |
| 72 | /* Base Address defns for twl4030_map[] */ |
| 73 | |
| 74 | /* subchip/slave 0 - USB ID */ |
| 75 | #define TWL4030_BASEADD_USB 0x0000 |
| 76 | |
| 77 | /* subchip/slave 1 - AUD ID */ |
| 78 | #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 |
| 79 | #define TWL4030_BASEADD_GPIO 0x0098 |
| 80 | #define TWL4030_BASEADD_INTBR 0x0085 |
| 81 | #define TWL4030_BASEADD_PIH 0x0080 |
| 82 | #define TWL4030_BASEADD_TEST 0x004C |
| 83 | |
| 84 | /* subchip/slave 2 - AUX ID */ |
| 85 | #define TWL4030_BASEADD_INTERRUPTS 0x00B9 |
| 86 | #define TWL4030_BASEADD_LED 0x00EE |
| 87 | #define TWL4030_BASEADD_MADC 0x0000 |
| 88 | #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 |
| 89 | #define TWL4030_BASEADD_PRECHARGE 0x00AA |
| 90 | #define TWL4030_BASEADD_PWM 0x00F8 |
| 91 | #define TWL4030_BASEADD_KEYPAD 0x00D2 |
| 92 | |
| 93 | #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ |
| 94 | #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's |
| 95 | one */ |
| 96 | |
| 97 | /* subchip/slave 3 - POWER ID */ |
| 98 | #define TWL4030_BASEADD_BACKUP 0x0014 |
| 99 | #define TWL4030_BASEADD_INT 0x002E |
| 100 | #define TWL4030_BASEADD_PM_MASTER 0x0036 |
| 101 | #define TWL4030_BASEADD_PM_RECEIVER 0x005B |
| 102 | #define TWL4030_BASEADD_RTC 0x001C |
| 103 | #define TWL4030_BASEADD_SECURED_REG 0x0000 |
| 104 | |
| 105 | /* Triton Core internal information (END) */ |
| 106 | |
| 107 | |
| 108 | /* subchip/slave 0 0x48 - POWER */ |
| 109 | #define TWL6030_BASEADD_RTC 0x0000 |
| 110 | #define TWL6030_BASEADD_SECURED_REG 0x0017 |
| 111 | #define TWL6030_BASEADD_PM_MASTER 0x001F |
| 112 | #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ |
| 113 | #define TWL6030_BASEADD_PM_MISC 0x00E2 |
| 114 | #define TWL6030_BASEADD_PM_PUPD 0x00F0 |
| 115 | |
| 116 | /* subchip/slave 1 0x49 - FEATURE */ |
| 117 | #define TWL6030_BASEADD_USB 0x0000 |
| 118 | #define TWL6030_BASEADD_GPADC_CTRL 0x002E |
| 119 | #define TWL6030_BASEADD_AUX 0x0090 |
| 120 | #define TWL6030_BASEADD_PWM 0x00BA |
| 121 | #define TWL6030_BASEADD_GASGAUGE 0x00C0 |
| 122 | #define TWL6030_BASEADD_PIH 0x00D0 |
| 123 | #define TWL6030_BASEADD_CHARGER 0x00E0 |
| 124 | #define TWL6032_BASEADD_CHARGER 0x00DA |
| 125 | #define TWL6030_BASEADD_LED 0x00F4 |
| 126 | |
| 127 | /* subchip/slave 2 0x4A - DFT */ |
| 128 | #define TWL6030_BASEADD_DIEID 0x00C0 |
| 129 | |
| 130 | /* subchip/slave 3 0x4B - AUDIO */ |
| 131 | #define TWL6030_BASEADD_AUDIO 0x0000 |
| 132 | #define TWL6030_BASEADD_RSV 0x0000 |
| 133 | #define TWL6030_BASEADD_ZERO 0x0000 |
| 134 | |
| 135 | /* Few power values */ |
| 136 | #define R_CFG_BOOT 0x05 |
| 137 | |
| 138 | /* some fields in R_CFG_BOOT */ |
| 139 | #define HFCLK_FREQ_19p2_MHZ (1 << 0) |
| 140 | #define HFCLK_FREQ_26_MHZ (2 << 0) |
| 141 | #define HFCLK_FREQ_38p4_MHZ (3 << 0) |
| 142 | #define HIGH_PERF_SQ (1 << 3) |
| 143 | #define CK32K_LOWPWR_EN (1 << 7) |
| 144 | |
| 145 | /*----------------------------------------------------------------------*/ |
| 146 | |
| 147 | /* Structure for each TWL4030/TWL6030 Slave */ |
| 148 | struct twl_client { |
| 149 | struct i2c_client *client; |
| 150 | struct regmap *regmap; |
| 151 | }; |
| 152 | |
| 153 | /* mapping the module id to slave id and base address */ |
| 154 | struct twl_mapping { |
| 155 | unsigned char sid; /* Slave ID */ |
| 156 | unsigned char base; /* base address */ |
| 157 | }; |
| 158 | |
| 159 | struct twl_private { |
| 160 | bool ready; /* The core driver is ready to be used */ |
| 161 | u32 twl_idcode; /* TWL IDCODE Register value */ |
| 162 | unsigned int twl_id; |
| 163 | |
| 164 | struct twl_mapping *twl_map; |
| 165 | struct twl_client *twl_modules; |
| 166 | }; |
| 167 | |
| 168 | static struct twl_private *twl_priv; |
| 169 | |
| 170 | static struct twl_mapping twl4030_map[] = { |
| 171 | /* |
| 172 | * NOTE: don't change this table without updating the |
| 173 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
| 174 | * so they continue to match the order in this table. |
| 175 | */ |
| 176 | |
| 177 | /* Common IPs */ |
| 178 | { 0, TWL4030_BASEADD_USB }, |
| 179 | { 1, TWL4030_BASEADD_PIH }, |
| 180 | { 2, TWL4030_BASEADD_MAIN_CHARGE }, |
| 181 | { 3, TWL4030_BASEADD_PM_MASTER }, |
| 182 | { 3, TWL4030_BASEADD_PM_RECEIVER }, |
| 183 | |
| 184 | { 3, TWL4030_BASEADD_RTC }, |
| 185 | { 2, TWL4030_BASEADD_PWM }, |
| 186 | { 2, TWL4030_BASEADD_LED }, |
| 187 | { 3, TWL4030_BASEADD_SECURED_REG }, |
| 188 | |
| 189 | /* TWL4030 specific IPs */ |
| 190 | { 1, TWL4030_BASEADD_AUDIO_VOICE }, |
| 191 | { 1, TWL4030_BASEADD_GPIO }, |
| 192 | { 1, TWL4030_BASEADD_INTBR }, |
| 193 | { 1, TWL4030_BASEADD_TEST }, |
| 194 | { 2, TWL4030_BASEADD_KEYPAD }, |
| 195 | |
| 196 | { 2, TWL4030_BASEADD_MADC }, |
| 197 | { 2, TWL4030_BASEADD_INTERRUPTS }, |
| 198 | { 2, TWL4030_BASEADD_PRECHARGE }, |
| 199 | { 3, TWL4030_BASEADD_BACKUP }, |
| 200 | { 3, TWL4030_BASEADD_INT }, |
| 201 | |
| 202 | { 2, TWL5031_BASEADD_ACCESSORY }, |
| 203 | { 2, TWL5031_BASEADD_INTERRUPTS }, |
| 204 | }; |
| 205 | |
| 206 | static struct reg_default twl4030_49_defaults[] = { |
| 207 | /* Audio Registers */ |
| 208 | { 0x01, 0x00}, /* CODEC_MODE */ |
| 209 | { 0x02, 0x00}, /* OPTION */ |
| 210 | /* 0x03 Unused */ |
| 211 | { 0x04, 0x00}, /* MICBIAS_CTL */ |
| 212 | { 0x05, 0x00}, /* ANAMICL */ |
| 213 | { 0x06, 0x00}, /* ANAMICR */ |
| 214 | { 0x07, 0x00}, /* AVADC_CTL */ |
| 215 | { 0x08, 0x00}, /* ADCMICSEL */ |
| 216 | { 0x09, 0x00}, /* DIGMIXING */ |
| 217 | { 0x0a, 0x0f}, /* ATXL1PGA */ |
| 218 | { 0x0b, 0x0f}, /* ATXR1PGA */ |
| 219 | { 0x0c, 0x0f}, /* AVTXL2PGA */ |
| 220 | { 0x0d, 0x0f}, /* AVTXR2PGA */ |
| 221 | { 0x0e, 0x00}, /* AUDIO_IF */ |
| 222 | { 0x0f, 0x00}, /* VOICE_IF */ |
| 223 | { 0x10, 0x3f}, /* ARXR1PGA */ |
| 224 | { 0x11, 0x3f}, /* ARXL1PGA */ |
| 225 | { 0x12, 0x3f}, /* ARXR2PGA */ |
| 226 | { 0x13, 0x3f}, /* ARXL2PGA */ |
| 227 | { 0x14, 0x25}, /* VRXPGA */ |
| 228 | { 0x15, 0x00}, /* VSTPGA */ |
| 229 | { 0x16, 0x00}, /* VRX2ARXPGA */ |
| 230 | { 0x17, 0x00}, /* AVDAC_CTL */ |
| 231 | { 0x18, 0x00}, /* ARX2VTXPGA */ |
| 232 | { 0x19, 0x32}, /* ARXL1_APGA_CTL*/ |
| 233 | { 0x1a, 0x32}, /* ARXR1_APGA_CTL*/ |
| 234 | { 0x1b, 0x32}, /* ARXL2_APGA_CTL*/ |
| 235 | { 0x1c, 0x32}, /* ARXR2_APGA_CTL*/ |
| 236 | { 0x1d, 0x00}, /* ATX2ARXPGA */ |
| 237 | { 0x1e, 0x00}, /* BT_IF */ |
| 238 | { 0x1f, 0x55}, /* BTPGA */ |
| 239 | { 0x20, 0x00}, /* BTSTPGA */ |
| 240 | { 0x21, 0x00}, /* EAR_CTL */ |
| 241 | { 0x22, 0x00}, /* HS_SEL */ |
| 242 | { 0x23, 0x00}, /* HS_GAIN_SET */ |
| 243 | { 0x24, 0x00}, /* HS_POPN_SET */ |
| 244 | { 0x25, 0x00}, /* PREDL_CTL */ |
| 245 | { 0x26, 0x00}, /* PREDR_CTL */ |
| 246 | { 0x27, 0x00}, /* PRECKL_CTL */ |
| 247 | { 0x28, 0x00}, /* PRECKR_CTL */ |
| 248 | { 0x29, 0x00}, /* HFL_CTL */ |
| 249 | { 0x2a, 0x00}, /* HFR_CTL */ |
| 250 | { 0x2b, 0x05}, /* ALC_CTL */ |
| 251 | { 0x2c, 0x00}, /* ALC_SET1 */ |
| 252 | { 0x2d, 0x00}, /* ALC_SET2 */ |
| 253 | { 0x2e, 0x00}, /* BOOST_CTL */ |
| 254 | { 0x2f, 0x00}, /* SOFTVOL_CTL */ |
| 255 | { 0x30, 0x13}, /* DTMF_FREQSEL */ |
| 256 | { 0x31, 0x00}, /* DTMF_TONEXT1H */ |
| 257 | { 0x32, 0x00}, /* DTMF_TONEXT1L */ |
| 258 | { 0x33, 0x00}, /* DTMF_TONEXT2H */ |
| 259 | { 0x34, 0x00}, /* DTMF_TONEXT2L */ |
| 260 | { 0x35, 0x79}, /* DTMF_TONOFF */ |
| 261 | { 0x36, 0x11}, /* DTMF_WANONOFF */ |
| 262 | { 0x37, 0x00}, /* I2S_RX_SCRAMBLE_H */ |
| 263 | { 0x38, 0x00}, /* I2S_RX_SCRAMBLE_M */ |
| 264 | { 0x39, 0x00}, /* I2S_RX_SCRAMBLE_L */ |
| 265 | { 0x3a, 0x06}, /* APLL_CTL */ |
| 266 | { 0x3b, 0x00}, /* DTMF_CTL */ |
| 267 | { 0x3c, 0x44}, /* DTMF_PGA_CTL2 (0x3C) */ |
| 268 | { 0x3d, 0x69}, /* DTMF_PGA_CTL1 (0x3D) */ |
| 269 | { 0x3e, 0x00}, /* MISC_SET_1 */ |
| 270 | { 0x3f, 0x00}, /* PCMBTMUX */ |
| 271 | /* 0x40 - 0x42 Unused */ |
| 272 | { 0x43, 0x00}, /* RX_PATH_SEL */ |
| 273 | { 0x44, 0x32}, /* VDL_APGA_CTL */ |
| 274 | { 0x45, 0x00}, /* VIBRA_CTL */ |
| 275 | { 0x46, 0x00}, /* VIBRA_SET */ |
| 276 | { 0x47, 0x00}, /* VIBRA_PWM_SET */ |
| 277 | { 0x48, 0x00}, /* ANAMIC_GAIN */ |
| 278 | { 0x49, 0x00}, /* MISC_SET_2 */ |
| 279 | /* End of Audio Registers */ |
| 280 | }; |
| 281 | |
| 282 | static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg) |
| 283 | { |
| 284 | switch (reg) { |
| 285 | case 0: |
| 286 | case 3: |
| 287 | case 40: |
| 288 | case 41: |
| 289 | case 42: |
| 290 | return false; |
| 291 | default: |
| 292 | return true; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | static const struct regmap_range twl4030_49_volatile_ranges[] = { |
| 297 | regmap_reg_range(TWL4030_BASEADD_TEST, 0xff), |
| 298 | }; |
| 299 | |
| 300 | static const struct regmap_access_table twl4030_49_volatile_table = { |
| 301 | .yes_ranges = twl4030_49_volatile_ranges, |
| 302 | .n_yes_ranges = ARRAY_SIZE(twl4030_49_volatile_ranges), |
| 303 | }; |
| 304 | |
| 305 | static struct regmap_config twl4030_regmap_config[4] = { |
| 306 | { |
| 307 | /* Address 0x48 */ |
| 308 | .reg_bits = 8, |
| 309 | .val_bits = 8, |
| 310 | .max_register = 0xff, |
| 311 | }, |
| 312 | { |
| 313 | /* Address 0x49 */ |
| 314 | .reg_bits = 8, |
| 315 | .val_bits = 8, |
| 316 | .max_register = 0xff, |
| 317 | |
| 318 | .readable_reg = twl4030_49_nop_reg, |
| 319 | .writeable_reg = twl4030_49_nop_reg, |
| 320 | |
| 321 | .volatile_table = &twl4030_49_volatile_table, |
| 322 | |
| 323 | .reg_defaults = twl4030_49_defaults, |
| 324 | .num_reg_defaults = ARRAY_SIZE(twl4030_49_defaults), |
| 325 | .cache_type = REGCACHE_RBTREE, |
| 326 | }, |
| 327 | { |
| 328 | /* Address 0x4a */ |
| 329 | .reg_bits = 8, |
| 330 | .val_bits = 8, |
| 331 | .max_register = 0xff, |
| 332 | }, |
| 333 | { |
| 334 | /* Address 0x4b */ |
| 335 | .reg_bits = 8, |
| 336 | .val_bits = 8, |
| 337 | .max_register = 0xff, |
| 338 | }, |
| 339 | }; |
| 340 | |
| 341 | static struct twl_mapping twl6030_map[] = { |
| 342 | /* |
| 343 | * NOTE: don't change this table without updating the |
| 344 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
| 345 | * so they continue to match the order in this table. |
| 346 | */ |
| 347 | |
| 348 | /* Common IPs */ |
| 349 | { 1, TWL6030_BASEADD_USB }, |
| 350 | { 1, TWL6030_BASEADD_PIH }, |
| 351 | { 1, TWL6030_BASEADD_CHARGER }, |
| 352 | { 0, TWL6030_BASEADD_PM_MASTER }, |
| 353 | { 0, TWL6030_BASEADD_PM_SLAVE_MISC }, |
| 354 | |
| 355 | { 0, TWL6030_BASEADD_RTC }, |
| 356 | { 1, TWL6030_BASEADD_PWM }, |
| 357 | { 1, TWL6030_BASEADD_LED }, |
| 358 | { 0, TWL6030_BASEADD_SECURED_REG }, |
| 359 | |
| 360 | /* TWL6030 specific IPs */ |
| 361 | { 0, TWL6030_BASEADD_ZERO }, |
| 362 | { 1, TWL6030_BASEADD_ZERO }, |
| 363 | { 2, TWL6030_BASEADD_ZERO }, |
| 364 | { 1, TWL6030_BASEADD_GPADC_CTRL }, |
| 365 | { 1, TWL6030_BASEADD_GASGAUGE }, |
| 366 | }; |
| 367 | |
| 368 | static struct regmap_config twl6030_regmap_config[3] = { |
| 369 | { |
| 370 | /* Address 0x48 */ |
| 371 | .reg_bits = 8, |
| 372 | .val_bits = 8, |
| 373 | .max_register = 0xff, |
| 374 | }, |
| 375 | { |
| 376 | /* Address 0x49 */ |
| 377 | .reg_bits = 8, |
| 378 | .val_bits = 8, |
| 379 | .max_register = 0xff, |
| 380 | }, |
| 381 | { |
| 382 | /* Address 0x4a */ |
| 383 | .reg_bits = 8, |
| 384 | .val_bits = 8, |
| 385 | .max_register = 0xff, |
| 386 | }, |
| 387 | }; |
| 388 | |
| 389 | /*----------------------------------------------------------------------*/ |
| 390 | |
| 391 | static inline int twl_get_num_slaves(void) |
| 392 | { |
| 393 | if (twl_class_is_4030()) |
| 394 | return 4; /* TWL4030 class have four slave address */ |
| 395 | else |
| 396 | return 3; /* TWL6030 class have three slave address */ |
| 397 | } |
| 398 | |
| 399 | static inline int twl_get_last_module(void) |
| 400 | { |
| 401 | if (twl_class_is_4030()) |
| 402 | return TWL4030_MODULE_LAST; |
| 403 | else |
| 404 | return TWL6030_MODULE_LAST; |
| 405 | } |
| 406 | |
| 407 | /* Exported Functions */ |
| 408 | |
| 409 | unsigned int twl_rev(void) |
| 410 | { |
| 411 | return twl_priv ? twl_priv->twl_id : 0; |
| 412 | } |
| 413 | EXPORT_SYMBOL(twl_rev); |
| 414 | |
| 415 | /** |
| 416 | * twl_get_regmap - Get the regmap associated with the given module |
| 417 | * @mod_no: module number |
| 418 | * |
| 419 | * Returns the regmap pointer or NULL in case of failure. |
| 420 | */ |
| 421 | static struct regmap *twl_get_regmap(u8 mod_no) |
| 422 | { |
| 423 | int sid; |
| 424 | struct twl_client *twl; |
| 425 | |
| 426 | if (unlikely(!twl_priv || !twl_priv->ready)) { |
| 427 | pr_err("%s: not initialized\n", DRIVER_NAME); |
| 428 | return NULL; |
| 429 | } |
| 430 | if (unlikely(mod_no >= twl_get_last_module())) { |
| 431 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
| 432 | return NULL; |
| 433 | } |
| 434 | |
| 435 | sid = twl_priv->twl_map[mod_no].sid; |
| 436 | twl = &twl_priv->twl_modules[sid]; |
| 437 | |
| 438 | return twl->regmap; |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 |
| 443 | * @mod_no: module number |
| 444 | * @value: an array of num_bytes+1 containing data to write |
| 445 | * @reg: register address (just offset will do) |
| 446 | * @num_bytes: number of bytes to transfer |
| 447 | * |
| 448 | * Returns the result of operation - 0 is success |
| 449 | */ |
| 450 | int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
| 451 | { |
| 452 | struct regmap *regmap = twl_get_regmap(mod_no); |
| 453 | int ret; |
| 454 | |
| 455 | if (!regmap) |
| 456 | return -EPERM; |
| 457 | |
| 458 | ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg, |
| 459 | value, num_bytes); |
| 460 | |
| 461 | if (ret) |
| 462 | pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n", |
| 463 | DRIVER_NAME, mod_no, reg, num_bytes); |
| 464 | |
| 465 | return ret; |
| 466 | } |
| 467 | EXPORT_SYMBOL(twl_i2c_write); |
| 468 | |
| 469 | /** |
| 470 | * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 |
| 471 | * @mod_no: module number |
| 472 | * @value: an array of num_bytes containing data to be read |
| 473 | * @reg: register address (just offset will do) |
| 474 | * @num_bytes: number of bytes to transfer |
| 475 | * |
| 476 | * Returns result of operation - num_bytes is success else failure. |
| 477 | */ |
| 478 | int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
| 479 | { |
| 480 | struct regmap *regmap = twl_get_regmap(mod_no); |
| 481 | int ret; |
| 482 | |
| 483 | if (!regmap) |
| 484 | return -EPERM; |
| 485 | |
| 486 | ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg, |
| 487 | value, num_bytes); |
| 488 | |
| 489 | if (ret) |
| 490 | pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n", |
| 491 | DRIVER_NAME, mod_no, reg, num_bytes); |
| 492 | |
| 493 | return ret; |
| 494 | } |
| 495 | EXPORT_SYMBOL(twl_i2c_read); |
| 496 | |
| 497 | /** |
| 498 | * twl_regcache_bypass - Configure the regcache bypass for the regmap associated |
| 499 | * with the module |
| 500 | * @mod_no: module number |
| 501 | * @enable: Regcache bypass state |
| 502 | * |
| 503 | * Returns 0 else failure. |
| 504 | */ |
| 505 | int twl_set_regcache_bypass(u8 mod_no, bool enable) |
| 506 | { |
| 507 | struct regmap *regmap = twl_get_regmap(mod_no); |
| 508 | |
| 509 | if (!regmap) |
| 510 | return -EPERM; |
| 511 | |
| 512 | regcache_cache_bypass(regmap, enable); |
| 513 | |
| 514 | return 0; |
| 515 | } |
| 516 | EXPORT_SYMBOL(twl_set_regcache_bypass); |
| 517 | |
| 518 | /*----------------------------------------------------------------------*/ |
| 519 | |
| 520 | /** |
| 521 | * twl_read_idcode_register - API to read the IDCODE register. |
| 522 | * |
| 523 | * Unlocks the IDCODE register and read the 32 bit value. |
| 524 | */ |
| 525 | static int twl_read_idcode_register(void) |
| 526 | { |
| 527 | int err; |
| 528 | |
| 529 | err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, |
| 530 | REG_UNLOCK_TEST_REG); |
| 531 | if (err) { |
| 532 | pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); |
| 533 | goto fail; |
| 534 | } |
| 535 | |
| 536 | err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode), |
| 537 | REG_IDCODE_7_0, 4); |
| 538 | if (err) { |
| 539 | pr_err("TWL4030: unable to read IDCODE -%d\n", err); |
| 540 | goto fail; |
| 541 | } |
| 542 | |
| 543 | err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); |
| 544 | if (err) |
| 545 | pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); |
| 546 | fail: |
| 547 | return err; |
| 548 | } |
| 549 | |
| 550 | /** |
| 551 | * twl_get_type - API to get TWL Si type. |
| 552 | * |
| 553 | * Api to get the TWL Si type from IDCODE value. |
| 554 | */ |
| 555 | int twl_get_type(void) |
| 556 | { |
| 557 | return TWL_SIL_TYPE(twl_priv->twl_idcode); |
| 558 | } |
| 559 | EXPORT_SYMBOL_GPL(twl_get_type); |
| 560 | |
| 561 | /** |
| 562 | * twl_get_version - API to get TWL Si version. |
| 563 | * |
| 564 | * Api to get the TWL Si version from IDCODE value. |
| 565 | */ |
| 566 | int twl_get_version(void) |
| 567 | { |
| 568 | return TWL_SIL_REV(twl_priv->twl_idcode); |
| 569 | } |
| 570 | EXPORT_SYMBOL_GPL(twl_get_version); |
| 571 | |
| 572 | /** |
| 573 | * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate. |
| 574 | * |
| 575 | * Api to get the TWL HFCLK rate based on BOOT_CFG register. |
| 576 | */ |
| 577 | int twl_get_hfclk_rate(void) |
| 578 | { |
| 579 | u8 ctrl; |
| 580 | int rate; |
| 581 | |
| 582 | twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT); |
| 583 | |
| 584 | switch (ctrl & 0x3) { |
| 585 | case HFCLK_FREQ_19p2_MHZ: |
| 586 | rate = 19200000; |
| 587 | break; |
| 588 | case HFCLK_FREQ_26_MHZ: |
| 589 | rate = 26000000; |
| 590 | break; |
| 591 | case HFCLK_FREQ_38p4_MHZ: |
| 592 | rate = 38400000; |
| 593 | break; |
| 594 | default: |
| 595 | pr_err("TWL4030: HFCLK is not configured\n"); |
| 596 | rate = -EINVAL; |
| 597 | break; |
| 598 | } |
| 599 | |
| 600 | return rate; |
| 601 | } |
| 602 | EXPORT_SYMBOL_GPL(twl_get_hfclk_rate); |
| 603 | |
| 604 | static struct device * |
| 605 | add_numbered_child(unsigned mod_no, const char *name, int num, |
| 606 | void *pdata, unsigned pdata_len, |
| 607 | bool can_wakeup, int irq0, int irq1) |
| 608 | { |
| 609 | struct platform_device *pdev; |
| 610 | struct twl_client *twl; |
| 611 | int status, sid; |
| 612 | |
| 613 | if (unlikely(mod_no >= twl_get_last_module())) { |
| 614 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
| 615 | return ERR_PTR(-EPERM); |
| 616 | } |
| 617 | sid = twl_priv->twl_map[mod_no].sid; |
| 618 | twl = &twl_priv->twl_modules[sid]; |
| 619 | |
| 620 | pdev = platform_device_alloc(name, num); |
| 621 | if (!pdev) { |
| 622 | dev_dbg(&twl->client->dev, "can't alloc dev\n"); |
| 623 | status = -ENOMEM; |
| 624 | goto err; |
| 625 | } |
| 626 | |
| 627 | pdev->dev.parent = &twl->client->dev; |
| 628 | |
| 629 | if (pdata) { |
| 630 | status = platform_device_add_data(pdev, pdata, pdata_len); |
| 631 | if (status < 0) { |
| 632 | dev_dbg(&pdev->dev, "can't add platform_data\n"); |
| 633 | goto err; |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | if (irq0) { |
| 638 | struct resource r[2] = { |
| 639 | { .start = irq0, .flags = IORESOURCE_IRQ, }, |
| 640 | { .start = irq1, .flags = IORESOURCE_IRQ, }, |
| 641 | }; |
| 642 | |
| 643 | status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
| 644 | if (status < 0) { |
| 645 | dev_dbg(&pdev->dev, "can't add irqs\n"); |
| 646 | goto err; |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | status = platform_device_add(pdev); |
| 651 | if (status == 0) |
| 652 | device_init_wakeup(&pdev->dev, can_wakeup); |
| 653 | |
| 654 | err: |
| 655 | if (status < 0) { |
| 656 | platform_device_put(pdev); |
| 657 | dev_err(&twl->client->dev, "can't add %s dev\n", name); |
| 658 | return ERR_PTR(status); |
| 659 | } |
| 660 | return &pdev->dev; |
| 661 | } |
| 662 | |
| 663 | static inline struct device *add_child(unsigned mod_no, const char *name, |
| 664 | void *pdata, unsigned pdata_len, |
| 665 | bool can_wakeup, int irq0, int irq1) |
| 666 | { |
| 667 | return add_numbered_child(mod_no, name, -1, pdata, pdata_len, |
| 668 | can_wakeup, irq0, irq1); |
| 669 | } |
| 670 | |
| 671 | static struct device * |
| 672 | add_regulator_linked(int num, struct regulator_init_data *pdata, |
| 673 | struct regulator_consumer_supply *consumers, |
| 674 | unsigned num_consumers, unsigned long features) |
| 675 | { |
| 676 | struct twl_regulator_driver_data drv_data; |
| 677 | |
| 678 | /* regulator framework demands init_data ... */ |
| 679 | if (!pdata) |
| 680 | return NULL; |
| 681 | |
| 682 | if (consumers) { |
| 683 | pdata->consumer_supplies = consumers; |
| 684 | pdata->num_consumer_supplies = num_consumers; |
| 685 | } |
| 686 | |
| 687 | if (pdata->driver_data) { |
| 688 | /* If we have existing drv_data, just add the flags */ |
| 689 | struct twl_regulator_driver_data *tmp; |
| 690 | tmp = pdata->driver_data; |
| 691 | tmp->features |= features; |
| 692 | } else { |
| 693 | /* add new driver data struct, used only during init */ |
| 694 | drv_data.features = features; |
| 695 | drv_data.set_voltage = NULL; |
| 696 | drv_data.get_voltage = NULL; |
| 697 | drv_data.data = NULL; |
| 698 | pdata->driver_data = &drv_data; |
| 699 | } |
| 700 | |
| 701 | /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ |
| 702 | return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num, |
| 703 | pdata, sizeof(*pdata), false, 0, 0); |
| 704 | } |
| 705 | |
| 706 | static struct device * |
| 707 | add_regulator(int num, struct regulator_init_data *pdata, |
| 708 | unsigned long features) |
| 709 | { |
| 710 | return add_regulator_linked(num, pdata, NULL, 0, features); |
| 711 | } |
| 712 | |
| 713 | /* |
| 714 | * NOTE: We know the first 8 IRQs after pdata->base_irq are |
| 715 | * for the PIH, and the next are for the PWR_INT SIH, since |
| 716 | * that's how twl_init_irq() sets things up. |
| 717 | */ |
| 718 | |
| 719 | static int |
| 720 | add_children(struct twl4030_platform_data *pdata, unsigned irq_base, |
| 721 | unsigned long features) |
| 722 | { |
| 723 | struct device *child; |
| 724 | |
| 725 | if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) { |
| 726 | child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio", |
| 727 | pdata->gpio, sizeof(*pdata->gpio), |
| 728 | false, irq_base + GPIO_INTR_OFFSET, 0); |
| 729 | if (IS_ERR(child)) |
| 730 | return PTR_ERR(child); |
| 731 | } |
| 732 | |
| 733 | if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) { |
| 734 | child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad", |
| 735 | pdata->keypad, sizeof(*pdata->keypad), |
| 736 | true, irq_base + KEYPAD_INTR_OFFSET, 0); |
| 737 | if (IS_ERR(child)) |
| 738 | return PTR_ERR(child); |
| 739 | } |
| 740 | |
| 741 | if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc && |
| 742 | twl_class_is_4030()) { |
| 743 | child = add_child(TWL4030_MODULE_MADC, "twl4030_madc", |
| 744 | pdata->madc, sizeof(*pdata->madc), |
| 745 | true, irq_base + MADC_INTR_OFFSET, 0); |
| 746 | if (IS_ERR(child)) |
| 747 | return PTR_ERR(child); |
| 748 | } |
| 749 | |
| 750 | if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) { |
| 751 | /* |
| 752 | * REVISIT platform_data here currently might expose the |
| 753 | * "msecure" line ... but for now we just expect board |
| 754 | * setup to tell the chip "it's always ok to SET_TIME". |
| 755 | * Eventually, Linux might become more aware of such |
| 756 | * HW security concerns, and "least privilege". |
| 757 | */ |
| 758 | child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0, |
| 759 | true, irq_base + RTC_INTR_OFFSET, 0); |
| 760 | if (IS_ERR(child)) |
| 761 | return PTR_ERR(child); |
| 762 | } |
| 763 | |
| 764 | if (IS_ENABLED(CONFIG_PWM_TWL)) { |
| 765 | child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0, |
| 766 | false, 0, 0); |
| 767 | if (IS_ERR(child)) |
| 768 | return PTR_ERR(child); |
| 769 | } |
| 770 | |
| 771 | if (IS_ENABLED(CONFIG_PWM_TWL_LED)) { |
| 772 | child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0, |
| 773 | false, 0, 0); |
| 774 | if (IS_ERR(child)) |
| 775 | return PTR_ERR(child); |
| 776 | } |
| 777 | |
| 778 | if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb && |
| 779 | twl_class_is_4030()) { |
| 780 | |
| 781 | static struct regulator_consumer_supply usb1v5 = { |
| 782 | .supply = "usb1v5", |
| 783 | }; |
| 784 | static struct regulator_consumer_supply usb1v8 = { |
| 785 | .supply = "usb1v8", |
| 786 | }; |
| 787 | static struct regulator_consumer_supply usb3v1[] = { |
| 788 | { .supply = "usb3v1" }, |
| 789 | { .supply = "bci3v1" }, |
| 790 | }; |
| 791 | |
| 792 | /* First add the regulators so that they can be used by transceiver */ |
| 793 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) { |
| 794 | /* this is a template that gets copied */ |
| 795 | struct regulator_init_data usb_fixed = { |
| 796 | .constraints.valid_modes_mask = |
| 797 | REGULATOR_MODE_NORMAL |
| 798 | | REGULATOR_MODE_STANDBY, |
| 799 | .constraints.valid_ops_mask = |
| 800 | REGULATOR_CHANGE_MODE |
| 801 | | REGULATOR_CHANGE_STATUS, |
| 802 | }; |
| 803 | |
| 804 | child = add_regulator_linked(TWL4030_REG_VUSB1V5, |
| 805 | &usb_fixed, &usb1v5, 1, |
| 806 | features); |
| 807 | if (IS_ERR(child)) |
| 808 | return PTR_ERR(child); |
| 809 | |
| 810 | child = add_regulator_linked(TWL4030_REG_VUSB1V8, |
| 811 | &usb_fixed, &usb1v8, 1, |
| 812 | features); |
| 813 | if (IS_ERR(child)) |
| 814 | return PTR_ERR(child); |
| 815 | |
| 816 | child = add_regulator_linked(TWL4030_REG_VUSB3V1, |
| 817 | &usb_fixed, usb3v1, 2, |
| 818 | features); |
| 819 | if (IS_ERR(child)) |
| 820 | return PTR_ERR(child); |
| 821 | |
| 822 | } |
| 823 | |
| 824 | child = add_child(TWL_MODULE_USB, "twl4030_usb", |
| 825 | pdata->usb, sizeof(*pdata->usb), true, |
| 826 | /* irq0 = USB_PRES, irq1 = USB */ |
| 827 | irq_base + USB_PRES_INTR_OFFSET, |
| 828 | irq_base + USB_INTR_OFFSET); |
| 829 | |
| 830 | if (IS_ERR(child)) |
| 831 | return PTR_ERR(child); |
| 832 | |
| 833 | /* we need to connect regulators to this transceiver */ |
| 834 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) { |
| 835 | usb1v5.dev_name = dev_name(child); |
| 836 | usb1v8.dev_name = dev_name(child); |
| 837 | usb3v1[0].dev_name = dev_name(child); |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) { |
| 842 | child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL, |
| 843 | 0, false, 0, 0); |
| 844 | if (IS_ERR(child)) |
| 845 | return PTR_ERR(child); |
| 846 | } |
| 847 | |
| 848 | if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) { |
| 849 | child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton", |
| 850 | NULL, 0, true, irq_base + 8 + 0, 0); |
| 851 | if (IS_ERR(child)) |
| 852 | return PTR_ERR(child); |
| 853 | } |
| 854 | |
| 855 | if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio && |
| 856 | twl_class_is_4030()) { |
| 857 | child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio", |
| 858 | pdata->audio, sizeof(*pdata->audio), |
| 859 | false, 0, 0); |
| 860 | if (IS_ERR(child)) |
| 861 | return PTR_ERR(child); |
| 862 | } |
| 863 | |
| 864 | /* twl4030 regulators */ |
| 865 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) { |
| 866 | child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1, |
| 867 | features); |
| 868 | if (IS_ERR(child)) |
| 869 | return PTR_ERR(child); |
| 870 | |
| 871 | child = add_regulator(TWL4030_REG_VIO, pdata->vio, |
| 872 | features); |
| 873 | if (IS_ERR(child)) |
| 874 | return PTR_ERR(child); |
| 875 | |
| 876 | child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1, |
| 877 | features); |
| 878 | if (IS_ERR(child)) |
| 879 | return PTR_ERR(child); |
| 880 | |
| 881 | child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2, |
| 882 | features); |
| 883 | if (IS_ERR(child)) |
| 884 | return PTR_ERR(child); |
| 885 | |
| 886 | child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1, |
| 887 | features); |
| 888 | if (IS_ERR(child)) |
| 889 | return PTR_ERR(child); |
| 890 | |
| 891 | child = add_regulator(TWL4030_REG_VDAC, pdata->vdac, |
| 892 | features); |
| 893 | if (IS_ERR(child)) |
| 894 | return PTR_ERR(child); |
| 895 | |
| 896 | child = add_regulator((features & TWL4030_VAUX2) |
| 897 | ? TWL4030_REG_VAUX2_4030 |
| 898 | : TWL4030_REG_VAUX2, |
| 899 | pdata->vaux2, features); |
| 900 | if (IS_ERR(child)) |
| 901 | return PTR_ERR(child); |
| 902 | |
| 903 | child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1, |
| 904 | features); |
| 905 | if (IS_ERR(child)) |
| 906 | return PTR_ERR(child); |
| 907 | |
| 908 | child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2, |
| 909 | features); |
| 910 | if (IS_ERR(child)) |
| 911 | return PTR_ERR(child); |
| 912 | |
| 913 | child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig, |
| 914 | features); |
| 915 | if (IS_ERR(child)) |
| 916 | return PTR_ERR(child); |
| 917 | } |
| 918 | |
| 919 | /* maybe add LDOs that are omitted on cost-reduced parts */ |
| 920 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET) |
| 921 | && twl_class_is_4030()) { |
| 922 | child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2, |
| 923 | features); |
| 924 | if (IS_ERR(child)) |
| 925 | return PTR_ERR(child); |
| 926 | |
| 927 | child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2, |
| 928 | features); |
| 929 | if (IS_ERR(child)) |
| 930 | return PTR_ERR(child); |
| 931 | |
| 932 | child = add_regulator(TWL4030_REG_VSIM, pdata->vsim, |
| 933 | features); |
| 934 | if (IS_ERR(child)) |
| 935 | return PTR_ERR(child); |
| 936 | |
| 937 | child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1, |
| 938 | features); |
| 939 | if (IS_ERR(child)) |
| 940 | return PTR_ERR(child); |
| 941 | |
| 942 | child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3, |
| 943 | features); |
| 944 | if (IS_ERR(child)) |
| 945 | return PTR_ERR(child); |
| 946 | |
| 947 | child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4, |
| 948 | features); |
| 949 | if (IS_ERR(child)) |
| 950 | return PTR_ERR(child); |
| 951 | } |
| 952 | |
| 953 | if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci && |
| 954 | !(features & (TPS_SUBSET | TWL5031))) { |
| 955 | child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci", |
| 956 | pdata->bci, sizeof(*pdata->bci), false, |
| 957 | /* irq0 = CHG_PRES, irq1 = BCI */ |
| 958 | irq_base + BCI_PRES_INTR_OFFSET, |
| 959 | irq_base + BCI_INTR_OFFSET); |
| 960 | if (IS_ERR(child)) |
| 961 | return PTR_ERR(child); |
| 962 | } |
| 963 | |
| 964 | if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) { |
| 965 | child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power", |
| 966 | pdata->power, sizeof(*pdata->power), false, |
| 967 | 0, 0); |
| 968 | if (IS_ERR(child)) |
| 969 | return PTR_ERR(child); |
| 970 | } |
| 971 | |
| 972 | return 0; |
| 973 | } |
| 974 | |
| 975 | /*----------------------------------------------------------------------*/ |
| 976 | |
| 977 | /* |
| 978 | * These three functions initialize the on-chip clock framework, |
| 979 | * letting it generate the right frequencies for USB, MADC, and |
| 980 | * other purposes. |
| 981 | */ |
| 982 | static inline int __init protect_pm_master(void) |
| 983 | { |
| 984 | int e = 0; |
| 985 | |
| 986 | e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, |
| 987 | TWL4030_PM_MASTER_PROTECT_KEY); |
| 988 | return e; |
| 989 | } |
| 990 | |
| 991 | static inline int __init unprotect_pm_master(void) |
| 992 | { |
| 993 | int e = 0; |
| 994 | |
| 995 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, |
| 996 | TWL4030_PM_MASTER_PROTECT_KEY); |
| 997 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, |
| 998 | TWL4030_PM_MASTER_PROTECT_KEY); |
| 999 | |
| 1000 | return e; |
| 1001 | } |
| 1002 | |
| 1003 | static void clocks_init(struct device *dev, |
| 1004 | struct twl4030_clock_init_data *clock) |
| 1005 | { |
| 1006 | int e = 0; |
| 1007 | struct clk *osc; |
| 1008 | u32 rate; |
| 1009 | u8 ctrl = HFCLK_FREQ_26_MHZ; |
| 1010 | |
| 1011 | osc = clk_get(dev, "fck"); |
| 1012 | if (IS_ERR(osc)) { |
| 1013 | printk(KERN_WARNING "Skipping twl internal clock init and " |
| 1014 | "using bootloader value (unknown osc rate)\n"); |
| 1015 | return; |
| 1016 | } |
| 1017 | |
| 1018 | rate = clk_get_rate(osc); |
| 1019 | clk_put(osc); |
| 1020 | |
| 1021 | switch (rate) { |
| 1022 | case 19200000: |
| 1023 | ctrl = HFCLK_FREQ_19p2_MHZ; |
| 1024 | break; |
| 1025 | case 26000000: |
| 1026 | ctrl = HFCLK_FREQ_26_MHZ; |
| 1027 | break; |
| 1028 | case 38400000: |
| 1029 | ctrl = HFCLK_FREQ_38p4_MHZ; |
| 1030 | break; |
| 1031 | } |
| 1032 | |
| 1033 | ctrl |= HIGH_PERF_SQ; |
| 1034 | if (clock && clock->ck32k_lowpwr_enable) |
| 1035 | ctrl |= CK32K_LOWPWR_EN; |
| 1036 | |
| 1037 | e |= unprotect_pm_master(); |
| 1038 | /* effect->MADC+USB ck en */ |
| 1039 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); |
| 1040 | e |= protect_pm_master(); |
| 1041 | |
| 1042 | if (e < 0) |
| 1043 | pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); |
| 1044 | } |
| 1045 | |
| 1046 | /*----------------------------------------------------------------------*/ |
| 1047 | |
| 1048 | |
| 1049 | static int twl_remove(struct i2c_client *client) |
| 1050 | { |
| 1051 | unsigned i, num_slaves; |
| 1052 | int status; |
| 1053 | |
| 1054 | if (twl_class_is_4030()) |
| 1055 | status = twl4030_exit_irq(); |
| 1056 | else |
| 1057 | status = twl6030_exit_irq(); |
| 1058 | |
| 1059 | if (status < 0) |
| 1060 | return status; |
| 1061 | |
| 1062 | num_slaves = twl_get_num_slaves(); |
| 1063 | for (i = 0; i < num_slaves; i++) { |
| 1064 | struct twl_client *twl = &twl_priv->twl_modules[i]; |
| 1065 | |
| 1066 | if (twl->client && twl->client != client) |
| 1067 | i2c_unregister_device(twl->client); |
| 1068 | twl->client = NULL; |
| 1069 | } |
| 1070 | twl_priv->ready = false; |
| 1071 | return 0; |
| 1072 | } |
| 1073 | |
| 1074 | static struct of_dev_auxdata twl_auxdata_lookup[] = { |
| 1075 | OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL), |
| 1076 | { /* sentinel */ }, |
| 1077 | }; |
| 1078 | |
| 1079 | /* NOTE: This driver only handles a single twl4030/tps659x0 chip */ |
| 1080 | static int |
| 1081 | twl_probe(struct i2c_client *client, const struct i2c_device_id *id) |
| 1082 | { |
| 1083 | struct twl4030_platform_data *pdata = dev_get_platdata(&client->dev); |
| 1084 | struct device_node *node = client->dev.of_node; |
| 1085 | struct platform_device *pdev; |
| 1086 | struct regmap_config *twl_regmap_config; |
| 1087 | int irq_base = 0; |
| 1088 | int status; |
| 1089 | unsigned i, num_slaves; |
| 1090 | |
| 1091 | if (!node && !pdata) { |
| 1092 | dev_err(&client->dev, "no platform data\n"); |
| 1093 | return -EINVAL; |
| 1094 | } |
| 1095 | |
| 1096 | if (twl_priv) { |
| 1097 | dev_dbg(&client->dev, "only one instance of %s allowed\n", |
| 1098 | DRIVER_NAME); |
| 1099 | return -EBUSY; |
| 1100 | } |
| 1101 | |
| 1102 | pdev = platform_device_alloc(DRIVER_NAME, -1); |
| 1103 | if (!pdev) { |
| 1104 | dev_err(&client->dev, "can't alloc pdev\n"); |
| 1105 | return -ENOMEM; |
| 1106 | } |
| 1107 | |
| 1108 | status = platform_device_add(pdev); |
| 1109 | if (status) { |
| 1110 | platform_device_put(pdev); |
| 1111 | return status; |
| 1112 | } |
| 1113 | |
| 1114 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { |
| 1115 | dev_dbg(&client->dev, "can't talk I2C?\n"); |
| 1116 | status = -EIO; |
| 1117 | goto free; |
| 1118 | } |
| 1119 | |
| 1120 | twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private), |
| 1121 | GFP_KERNEL); |
| 1122 | if (!twl_priv) { |
| 1123 | status = -ENOMEM; |
| 1124 | goto free; |
| 1125 | } |
| 1126 | |
| 1127 | if ((id->driver_data) & TWL6030_CLASS) { |
| 1128 | twl_priv->twl_id = TWL6030_CLASS_ID; |
| 1129 | twl_priv->twl_map = &twl6030_map[0]; |
| 1130 | /* The charger base address is different in twl6032 */ |
| 1131 | if ((id->driver_data) & TWL6032_SUBCLASS) |
| 1132 | twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base = |
| 1133 | TWL6032_BASEADD_CHARGER; |
| 1134 | twl_regmap_config = twl6030_regmap_config; |
| 1135 | } else { |
| 1136 | twl_priv->twl_id = TWL4030_CLASS_ID; |
| 1137 | twl_priv->twl_map = &twl4030_map[0]; |
| 1138 | twl_regmap_config = twl4030_regmap_config; |
| 1139 | } |
| 1140 | |
| 1141 | num_slaves = twl_get_num_slaves(); |
| 1142 | twl_priv->twl_modules = devm_kzalloc(&client->dev, |
| 1143 | sizeof(struct twl_client) * num_slaves, |
| 1144 | GFP_KERNEL); |
| 1145 | if (!twl_priv->twl_modules) { |
| 1146 | status = -ENOMEM; |
| 1147 | goto free; |
| 1148 | } |
| 1149 | |
| 1150 | for (i = 0; i < num_slaves; i++) { |
| 1151 | struct twl_client *twl = &twl_priv->twl_modules[i]; |
| 1152 | |
| 1153 | if (i == 0) { |
| 1154 | twl->client = client; |
| 1155 | } else { |
| 1156 | twl->client = i2c_new_dummy(client->adapter, |
| 1157 | client->addr + i); |
| 1158 | if (!twl->client) { |
| 1159 | dev_err(&client->dev, |
| 1160 | "can't attach client %d\n", i); |
| 1161 | status = -ENOMEM; |
| 1162 | goto fail; |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | twl->regmap = devm_regmap_init_i2c(twl->client, |
| 1167 | &twl_regmap_config[i]); |
| 1168 | if (IS_ERR(twl->regmap)) { |
| 1169 | status = PTR_ERR(twl->regmap); |
| 1170 | dev_err(&client->dev, |
| 1171 | "Failed to allocate regmap %d, err: %d\n", i, |
| 1172 | status); |
| 1173 | goto fail; |
| 1174 | } |
| 1175 | } |
| 1176 | |
| 1177 | twl_priv->ready = true; |
| 1178 | |
| 1179 | /* setup clock framework */ |
| 1180 | clocks_init(&pdev->dev, pdata ? pdata->clock : NULL); |
| 1181 | |
| 1182 | /* read TWL IDCODE Register */ |
| 1183 | if (twl_class_is_4030()) { |
| 1184 | status = twl_read_idcode_register(); |
| 1185 | WARN(status < 0, "Error: reading twl_idcode register value\n"); |
| 1186 | } |
| 1187 | |
| 1188 | /* Maybe init the T2 Interrupt subsystem */ |
| 1189 | if (client->irq) { |
| 1190 | if (twl_class_is_4030()) { |
| 1191 | twl4030_init_chip_irq(id->name); |
| 1192 | irq_base = twl4030_init_irq(&client->dev, client->irq); |
| 1193 | } else { |
| 1194 | irq_base = twl6030_init_irq(&client->dev, client->irq); |
| 1195 | } |
| 1196 | |
| 1197 | if (irq_base < 0) { |
| 1198 | status = irq_base; |
| 1199 | goto fail; |
| 1200 | } |
| 1201 | } |
| 1202 | |
| 1203 | /* |
| 1204 | * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. |
| 1205 | * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, |
| 1206 | * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. |
| 1207 | */ |
| 1208 | if (twl_class_is_4030()) { |
| 1209 | u8 temp; |
| 1210 | |
| 1211 | twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); |
| 1212 | temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ |
| 1213 | I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); |
| 1214 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); |
| 1215 | } |
| 1216 | |
| 1217 | if (node) { |
| 1218 | if (pdata) |
| 1219 | twl_auxdata_lookup[0].platform_data = pdata->gpio; |
| 1220 | status = of_platform_populate(node, NULL, twl_auxdata_lookup, |
| 1221 | &client->dev); |
| 1222 | } else { |
| 1223 | status = add_children(pdata, irq_base, id->driver_data); |
| 1224 | } |
| 1225 | |
| 1226 | fail: |
| 1227 | if (status < 0) |
| 1228 | twl_remove(client); |
| 1229 | free: |
| 1230 | if (status < 0) |
| 1231 | platform_device_unregister(pdev); |
| 1232 | |
| 1233 | return status; |
| 1234 | } |
| 1235 | |
| 1236 | static const struct i2c_device_id twl_ids[] = { |
| 1237 | { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
| 1238 | { "twl5030", 0 }, /* T2 updated */ |
| 1239 | { "twl5031", TWL5031 }, /* TWL5030 updated */ |
| 1240 | { "tps65950", 0 }, /* catalog version of twl5030 */ |
| 1241 | { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ |
| 1242 | { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ |
| 1243 | { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED |
| 1244 | and vibrator. Charger in USB module*/ |
| 1245 | { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ |
| 1246 | { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */ |
| 1247 | { /* end of list */ }, |
| 1248 | }; |
| 1249 | MODULE_DEVICE_TABLE(i2c, twl_ids); |
| 1250 | |
| 1251 | /* One Client Driver , 4 Clients */ |
| 1252 | static struct i2c_driver twl_driver = { |
| 1253 | .driver.name = DRIVER_NAME, |
| 1254 | .id_table = twl_ids, |
| 1255 | .probe = twl_probe, |
| 1256 | .remove = twl_remove, |
| 1257 | }; |
| 1258 | |
| 1259 | module_i2c_driver(twl_driver); |
| 1260 | |
| 1261 | MODULE_AUTHOR("Texas Instruments, Inc."); |
| 1262 | MODULE_DESCRIPTION("I2C Core interface for TWL"); |
| 1263 | MODULE_LICENSE("GPL"); |