1 /* 2 * Copyright (C) 2004 Texas Instruments, Inc. 3 * 4 * Some parts based tps65010.c: 5 * Copyright (C) 2004 Texas Instruments and 6 * Copyright (C) 2004-2005 David Brownell 7 * 8 * Some parts based on tlv320aic24.c: 9 * Copyright (C) by Kai Svahn <kai.svahn@nokia.com> 10 * 11 * Changes for interrupt handling and clean-up by 12 * Tony Lindgren <tony@atomide.com> and Imre Deak <imre.deak@nokia.com> 13 * Cleanup and generalized support for voltage setting by 14 * Juha Yrjola 15 * Added support for controlling VCORE and regulator sleep states, 16 * Amit Kucheria <amit.kucheria@nokia.com> 17 * Copyright (C) 2005, 2006 Nokia Corporation 18 * 19 * This program is free software; you can redistribute it and/or modify 20 * it under the terms of the GNU General Public License as published by 21 * the Free Software Foundation; either version 2 of the License, or 22 * (at your option) any later version. 23 * 24 * This program is distributed in the hope that it will be useful, 25 * but WITHOUT ANY WARRANTY; without even the implied warranty of 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 27 * GNU General Public License for more details. 28 * 29 * You should have received a copy of the GNU General Public License 30 * along with this program; if not, write to the Free Software 31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 32 */ 33 34 #include <linux/module.h> 35 #include <linux/i2c.h> 36 #include <linux/interrupt.h> 37 #include <linux/sched.h> 38 #include <linux/mutex.h> 39 #include <linux/workqueue.h> 40 #include <linux/delay.h> 41 #include <linux/rtc.h> 42 #include <linux/bcd.h> 43 #include <linux/slab.h> 44 #include <linux/mfd/menelaus.h> 45 46 #include <asm/mach/irq.h> 47 48 #include <asm/gpio.h> 49 50 #define DRIVER_NAME "menelaus" 51 52 #define MENELAUS_I2C_ADDRESS 0x72 53 54 #define MENELAUS_REV 0x01 55 #define MENELAUS_VCORE_CTRL1 0x02 56 #define MENELAUS_VCORE_CTRL2 0x03 57 #define MENELAUS_VCORE_CTRL3 0x04 58 #define MENELAUS_VCORE_CTRL4 0x05 59 #define MENELAUS_VCORE_CTRL5 0x06 60 #define MENELAUS_DCDC_CTRL1 0x07 61 #define MENELAUS_DCDC_CTRL2 0x08 62 #define MENELAUS_DCDC_CTRL3 0x09 63 #define MENELAUS_LDO_CTRL1 0x0A 64 #define MENELAUS_LDO_CTRL2 0x0B 65 #define MENELAUS_LDO_CTRL3 0x0C 66 #define MENELAUS_LDO_CTRL4 0x0D 67 #define MENELAUS_LDO_CTRL5 0x0E 68 #define MENELAUS_LDO_CTRL6 0x0F 69 #define MENELAUS_LDO_CTRL7 0x10 70 #define MENELAUS_LDO_CTRL8 0x11 71 #define MENELAUS_SLEEP_CTRL1 0x12 72 #define MENELAUS_SLEEP_CTRL2 0x13 73 #define MENELAUS_DEVICE_OFF 0x14 74 #define MENELAUS_OSC_CTRL 0x15 75 #define MENELAUS_DETECT_CTRL 0x16 76 #define MENELAUS_INT_MASK1 0x17 77 #define MENELAUS_INT_MASK2 0x18 78 #define MENELAUS_INT_STATUS1 0x19 79 #define MENELAUS_INT_STATUS2 0x1A 80 #define MENELAUS_INT_ACK1 0x1B 81 #define MENELAUS_INT_ACK2 0x1C 82 #define MENELAUS_GPIO_CTRL 0x1D 83 #define MENELAUS_GPIO_IN 0x1E 84 #define MENELAUS_GPIO_OUT 0x1F 85 #define MENELAUS_BBSMS 0x20 86 #define MENELAUS_RTC_CTRL 0x21 87 #define MENELAUS_RTC_UPDATE 0x22 88 #define MENELAUS_RTC_SEC 0x23 89 #define MENELAUS_RTC_MIN 0x24 90 #define MENELAUS_RTC_HR 0x25 91 #define MENELAUS_RTC_DAY 0x26 92 #define MENELAUS_RTC_MON 0x27 93 #define MENELAUS_RTC_YR 0x28 94 #define MENELAUS_RTC_WKDAY 0x29 95 #define MENELAUS_RTC_AL_SEC 0x2A 96 #define MENELAUS_RTC_AL_MIN 0x2B 97 #define MENELAUS_RTC_AL_HR 0x2C 98 #define MENELAUS_RTC_AL_DAY 0x2D 99 #define MENELAUS_RTC_AL_MON 0x2E 100 #define MENELAUS_RTC_AL_YR 0x2F 101 #define MENELAUS_RTC_COMP_MSB 0x30 102 #define MENELAUS_RTC_COMP_LSB 0x31 103 #define MENELAUS_S1_PULL_EN 0x32 104 #define MENELAUS_S1_PULL_DIR 0x33 105 #define MENELAUS_S2_PULL_EN 0x34 106 #define MENELAUS_S2_PULL_DIR 0x35 107 #define MENELAUS_MCT_CTRL1 0x36 108 #define MENELAUS_MCT_CTRL2 0x37 109 #define MENELAUS_MCT_CTRL3 0x38 110 #define MENELAUS_MCT_PIN_ST 0x39 111 #define MENELAUS_DEBOUNCE1 0x3A 112 113 #define IH_MENELAUS_IRQS 12 114 #define MENELAUS_MMC_S1CD_IRQ 0 /* MMC slot 1 card change */ 115 #define MENELAUS_MMC_S2CD_IRQ 1 /* MMC slot 2 card change */ 116 #define MENELAUS_MMC_S1D1_IRQ 2 /* MMC DAT1 low in slot 1 */ 117 #define MENELAUS_MMC_S2D1_IRQ 3 /* MMC DAT1 low in slot 2 */ 118 #define MENELAUS_LOWBAT_IRQ 4 /* Low battery */ 119 #define MENELAUS_HOTDIE_IRQ 5 /* Hot die detect */ 120 #define MENELAUS_UVLO_IRQ 6 /* UVLO detect */ 121 #define MENELAUS_TSHUT_IRQ 7 /* Thermal shutdown */ 122 #define MENELAUS_RTCTMR_IRQ 8 /* RTC timer */ 123 #define MENELAUS_RTCALM_IRQ 9 /* RTC alarm */ 124 #define MENELAUS_RTCERR_IRQ 10 /* RTC error */ 125 #define MENELAUS_PSHBTN_IRQ 11 /* Push button */ 126 #define MENELAUS_RESERVED12_IRQ 12 /* Reserved */ 127 #define MENELAUS_RESERVED13_IRQ 13 /* Reserved */ 128 #define MENELAUS_RESERVED14_IRQ 14 /* Reserved */ 129 #define MENELAUS_RESERVED15_IRQ 15 /* Reserved */ 130 131 /* VCORE_CTRL1 register */ 132 #define VCORE_CTRL1_BYP_COMP (1 << 5) 133 #define VCORE_CTRL1_HW_NSW (1 << 7) 134 135 /* GPIO_CTRL register */ 136 #define GPIO_CTRL_SLOTSELEN (1 << 5) 137 #define GPIO_CTRL_SLPCTLEN (1 << 6) 138 #define GPIO1_DIR_INPUT (1 << 0) 139 #define GPIO2_DIR_INPUT (1 << 1) 140 #define GPIO3_DIR_INPUT (1 << 2) 141 142 /* MCT_CTRL1 register */ 143 #define MCT_CTRL1_S1_CMD_OD (1 << 2) 144 #define MCT_CTRL1_S2_CMD_OD (1 << 3) 145 146 /* MCT_CTRL2 register */ 147 #define MCT_CTRL2_VS2_SEL_D0 (1 << 0) 148 #define MCT_CTRL2_VS2_SEL_D1 (1 << 1) 149 #define MCT_CTRL2_S1CD_BUFEN (1 << 4) 150 #define MCT_CTRL2_S2CD_BUFEN (1 << 5) 151 #define MCT_CTRL2_S1CD_DBEN (1 << 6) 152 #define MCT_CTRL2_S2CD_BEN (1 << 7) 153 154 /* MCT_CTRL3 register */ 155 #define MCT_CTRL3_SLOT1_EN (1 << 0) 156 #define MCT_CTRL3_SLOT2_EN (1 << 1) 157 #define MCT_CTRL3_S1_AUTO_EN (1 << 2) 158 #define MCT_CTRL3_S2_AUTO_EN (1 << 3) 159 160 /* MCT_PIN_ST register */ 161 #define MCT_PIN_ST_S1_CD_ST (1 << 0) 162 #define MCT_PIN_ST_S2_CD_ST (1 << 1) 163 164 static void menelaus_work(struct work_struct *_menelaus); 165 166 struct menelaus_chip { 167 struct mutex lock; 168 struct i2c_client *client; 169 struct work_struct work; 170 #ifdef CONFIG_RTC_DRV_TWL92330 171 struct rtc_device *rtc; 172 u8 rtc_control; 173 unsigned uie:1; 174 #endif 175 unsigned vcore_hw_mode:1; 176 u8 mask1, mask2; 177 void (*handlers[16])(struct menelaus_chip *); 178 void (*mmc_callback)(void *data, u8 mask); 179 void *mmc_callback_data; 180 }; 181 182 static struct menelaus_chip *the_menelaus; 183 184 static int menelaus_write_reg(int reg, u8 value) 185 { 186 int val = i2c_smbus_write_byte_data(the_menelaus->client, reg, value); 187 188 if (val < 0) { 189 pr_err(DRIVER_NAME ": write error"); 190 return val; 191 } 192 193 return 0; 194 } 195 196 static int menelaus_read_reg(int reg) 197 { 198 int val = i2c_smbus_read_byte_data(the_menelaus->client, reg); 199 200 if (val < 0) 201 pr_err(DRIVER_NAME ": read error"); 202 203 return val; 204 } 205 206 static int menelaus_enable_irq(int irq) 207 { 208 if (irq > 7) { 209 irq -= 8; 210 the_menelaus->mask2 &= ~(1 << irq); 211 return menelaus_write_reg(MENELAUS_INT_MASK2, 212 the_menelaus->mask2); 213 } else { 214 the_menelaus->mask1 &= ~(1 << irq); 215 return menelaus_write_reg(MENELAUS_INT_MASK1, 216 the_menelaus->mask1); 217 } 218 } 219 220 static int menelaus_disable_irq(int irq) 221 { 222 if (irq > 7) { 223 irq -= 8; 224 the_menelaus->mask2 |= (1 << irq); 225 return menelaus_write_reg(MENELAUS_INT_MASK2, 226 the_menelaus->mask2); 227 } else { 228 the_menelaus->mask1 |= (1 << irq); 229 return menelaus_write_reg(MENELAUS_INT_MASK1, 230 the_menelaus->mask1); 231 } 232 } 233 234 static int menelaus_ack_irq(int irq) 235 { 236 if (irq > 7) 237 return menelaus_write_reg(MENELAUS_INT_ACK2, 1 << (irq - 8)); 238 else 239 return menelaus_write_reg(MENELAUS_INT_ACK1, 1 << irq); 240 } 241 242 /* Adds a handler for an interrupt. Does not run in interrupt context */ 243 static int menelaus_add_irq_work(int irq, 244 void (*handler)(struct menelaus_chip *)) 245 { 246 int ret = 0; 247 248 mutex_lock(&the_menelaus->lock); 249 the_menelaus->handlers[irq] = handler; 250 ret = menelaus_enable_irq(irq); 251 mutex_unlock(&the_menelaus->lock); 252 253 return ret; 254 } 255 256 /* Removes handler for an interrupt */ 257 static int menelaus_remove_irq_work(int irq) 258 { 259 int ret = 0; 260 261 mutex_lock(&the_menelaus->lock); 262 ret = menelaus_disable_irq(irq); 263 the_menelaus->handlers[irq] = NULL; 264 mutex_unlock(&the_menelaus->lock); 265 266 return ret; 267 } 268 269 /* 270 * Gets scheduled when a card detect interrupt happens. Note that in some cases 271 * this line is wired to card cover switch rather than the card detect switch 272 * in each slot. In this case the cards are not seen by menelaus. 273 * FIXME: Add handling for D1 too 274 */ 275 static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw) 276 { 277 int reg; 278 unsigned char card_mask = 0; 279 280 reg = menelaus_read_reg(MENELAUS_MCT_PIN_ST); 281 if (reg < 0) 282 return; 283 284 if (!(reg & 0x1)) 285 card_mask |= MCT_PIN_ST_S1_CD_ST; 286 287 if (!(reg & 0x2)) 288 card_mask |= MCT_PIN_ST_S2_CD_ST; 289 290 if (menelaus_hw->mmc_callback) 291 menelaus_hw->mmc_callback(menelaus_hw->mmc_callback_data, 292 card_mask); 293 } 294 295 /* 296 * Toggles the MMC slots between open-drain and push-pull mode. 297 */ 298 int menelaus_set_mmc_opendrain(int slot, int enable) 299 { 300 int ret, val; 301 302 if (slot != 1 && slot != 2) 303 return -EINVAL; 304 mutex_lock(&the_menelaus->lock); 305 ret = menelaus_read_reg(MENELAUS_MCT_CTRL1); 306 if (ret < 0) { 307 mutex_unlock(&the_menelaus->lock); 308 return ret; 309 } 310 val = ret; 311 if (slot == 1) { 312 if (enable) 313 val |= MCT_CTRL1_S1_CMD_OD; 314 else 315 val &= ~MCT_CTRL1_S1_CMD_OD; 316 } else { 317 if (enable) 318 val |= MCT_CTRL1_S2_CMD_OD; 319 else 320 val &= ~MCT_CTRL1_S2_CMD_OD; 321 } 322 ret = menelaus_write_reg(MENELAUS_MCT_CTRL1, val); 323 mutex_unlock(&the_menelaus->lock); 324 325 return ret; 326 } 327 EXPORT_SYMBOL(menelaus_set_mmc_opendrain); 328 329 int menelaus_set_slot_sel(int enable) 330 { 331 int ret; 332 333 mutex_lock(&the_menelaus->lock); 334 ret = menelaus_read_reg(MENELAUS_GPIO_CTRL); 335 if (ret < 0) 336 goto out; 337 ret |= GPIO2_DIR_INPUT; 338 if (enable) 339 ret |= GPIO_CTRL_SLOTSELEN; 340 else 341 ret &= ~GPIO_CTRL_SLOTSELEN; 342 ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret); 343 out: 344 mutex_unlock(&the_menelaus->lock); 345 return ret; 346 } 347 EXPORT_SYMBOL(menelaus_set_slot_sel); 348 349 int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en) 350 { 351 int ret, val; 352 353 if (slot != 1 && slot != 2) 354 return -EINVAL; 355 if (power >= 3) 356 return -EINVAL; 357 358 mutex_lock(&the_menelaus->lock); 359 360 ret = menelaus_read_reg(MENELAUS_MCT_CTRL2); 361 if (ret < 0) 362 goto out; 363 val = ret; 364 if (slot == 1) { 365 if (cd_en) 366 val |= MCT_CTRL2_S1CD_BUFEN | MCT_CTRL2_S1CD_DBEN; 367 else 368 val &= ~(MCT_CTRL2_S1CD_BUFEN | MCT_CTRL2_S1CD_DBEN); 369 } else { 370 if (cd_en) 371 val |= MCT_CTRL2_S2CD_BUFEN | MCT_CTRL2_S2CD_BEN; 372 else 373 val &= ~(MCT_CTRL2_S2CD_BUFEN | MCT_CTRL2_S2CD_BEN); 374 } 375 ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, val); 376 if (ret < 0) 377 goto out; 378 379 ret = menelaus_read_reg(MENELAUS_MCT_CTRL3); 380 if (ret < 0) 381 goto out; 382 val = ret; 383 if (slot == 1) { 384 if (enable) 385 val |= MCT_CTRL3_SLOT1_EN; 386 else 387 val &= ~MCT_CTRL3_SLOT1_EN; 388 } else { 389 int b; 390 391 if (enable) 392 val |= MCT_CTRL3_SLOT2_EN; 393 else 394 val &= ~MCT_CTRL3_SLOT2_EN; 395 b = menelaus_read_reg(MENELAUS_MCT_CTRL2); 396 b &= ~(MCT_CTRL2_VS2_SEL_D0 | MCT_CTRL2_VS2_SEL_D1); 397 b |= power; 398 ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, b); 399 if (ret < 0) 400 goto out; 401 } 402 /* Disable autonomous shutdown */ 403 val &= ~(MCT_CTRL3_S1_AUTO_EN | MCT_CTRL3_S2_AUTO_EN); 404 ret = menelaus_write_reg(MENELAUS_MCT_CTRL3, val); 405 out: 406 mutex_unlock(&the_menelaus->lock); 407 return ret; 408 } 409 EXPORT_SYMBOL(menelaus_set_mmc_slot); 410 411 int menelaus_register_mmc_callback(void (*callback)(void *data, u8 card_mask), 412 void *data) 413 { 414 int ret = 0; 415 416 the_menelaus->mmc_callback_data = data; 417 the_menelaus->mmc_callback = callback; 418 ret = menelaus_add_irq_work(MENELAUS_MMC_S1CD_IRQ, 419 menelaus_mmc_cd_work); 420 if (ret < 0) 421 return ret; 422 ret = menelaus_add_irq_work(MENELAUS_MMC_S2CD_IRQ, 423 menelaus_mmc_cd_work); 424 if (ret < 0) 425 return ret; 426 ret = menelaus_add_irq_work(MENELAUS_MMC_S1D1_IRQ, 427 menelaus_mmc_cd_work); 428 if (ret < 0) 429 return ret; 430 ret = menelaus_add_irq_work(MENELAUS_MMC_S2D1_IRQ, 431 menelaus_mmc_cd_work); 432 433 return ret; 434 } 435 EXPORT_SYMBOL(menelaus_register_mmc_callback); 436 437 void menelaus_unregister_mmc_callback(void) 438 { 439 menelaus_remove_irq_work(MENELAUS_MMC_S1CD_IRQ); 440 menelaus_remove_irq_work(MENELAUS_MMC_S2CD_IRQ); 441 menelaus_remove_irq_work(MENELAUS_MMC_S1D1_IRQ); 442 menelaus_remove_irq_work(MENELAUS_MMC_S2D1_IRQ); 443 444 the_menelaus->mmc_callback = NULL; 445 the_menelaus->mmc_callback_data = NULL; 446 } 447 EXPORT_SYMBOL(menelaus_unregister_mmc_callback); 448 449 struct menelaus_vtg { 450 const char *name; 451 u8 vtg_reg; 452 u8 vtg_shift; 453 u8 vtg_bits; 454 u8 mode_reg; 455 }; 456 457 struct menelaus_vtg_value { 458 u16 vtg; 459 u16 val; 460 }; 461 462 static int menelaus_set_voltage(const struct menelaus_vtg *vtg, int mV, 463 int vtg_val, int mode) 464 { 465 int val, ret; 466 struct i2c_client *c = the_menelaus->client; 467 468 mutex_lock(&the_menelaus->lock); 469 470 ret = menelaus_read_reg(vtg->vtg_reg); 471 if (ret < 0) 472 goto out; 473 val = ret & ~(((1 << vtg->vtg_bits) - 1) << vtg->vtg_shift); 474 val |= vtg_val << vtg->vtg_shift; 475 476 dev_dbg(&c->dev, "Setting voltage '%s'" 477 "to %d mV (reg 0x%02x, val 0x%02x)\n", 478 vtg->name, mV, vtg->vtg_reg, val); 479 480 ret = menelaus_write_reg(vtg->vtg_reg, val); 481 if (ret < 0) 482 goto out; 483 ret = menelaus_write_reg(vtg->mode_reg, mode); 484 out: 485 mutex_unlock(&the_menelaus->lock); 486 if (ret == 0) { 487 /* Wait for voltage to stabilize */ 488 msleep(1); 489 } 490 return ret; 491 } 492 493 static int menelaus_get_vtg_value(int vtg, const struct menelaus_vtg_value *tbl, 494 int n) 495 { 496 int i; 497 498 for (i = 0; i < n; i++, tbl++) 499 if (tbl->vtg == vtg) 500 return tbl->val; 501 return -EINVAL; 502 } 503 504 /* 505 * Vcore can be programmed in two ways: 506 * SW-controlled: Required voltage is programmed into VCORE_CTRL1 507 * HW-controlled: Required range (roof-floor) is programmed into VCORE_CTRL3 508 * and VCORE_CTRL4 509 * 510 * Call correct 'set' function accordingly 511 */ 512 513 static const struct menelaus_vtg_value vcore_values[] = { 514 { 1000, 0 }, 515 { 1025, 1 }, 516 { 1050, 2 }, 517 { 1075, 3 }, 518 { 1100, 4 }, 519 { 1125, 5 }, 520 { 1150, 6 }, 521 { 1175, 7 }, 522 { 1200, 8 }, 523 { 1225, 9 }, 524 { 1250, 10 }, 525 { 1275, 11 }, 526 { 1300, 12 }, 527 { 1325, 13 }, 528 { 1350, 14 }, 529 { 1375, 15 }, 530 { 1400, 16 }, 531 { 1425, 17 }, 532 { 1450, 18 }, 533 }; 534 535 int menelaus_set_vcore_sw(unsigned int mV) 536 { 537 int val, ret; 538 struct i2c_client *c = the_menelaus->client; 539 540 val = menelaus_get_vtg_value(mV, vcore_values, 541 ARRAY_SIZE(vcore_values)); 542 if (val < 0) 543 return -EINVAL; 544 545 dev_dbg(&c->dev, "Setting VCORE to %d mV (val 0x%02x)\n", mV, val); 546 547 /* Set SW mode and the voltage in one go. */ 548 mutex_lock(&the_menelaus->lock); 549 ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val); 550 if (ret == 0) 551 the_menelaus->vcore_hw_mode = 0; 552 mutex_unlock(&the_menelaus->lock); 553 msleep(1); 554 555 return ret; 556 } 557 558 int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV) 559 { 560 int fval, rval, val, ret; 561 struct i2c_client *c = the_menelaus->client; 562 563 rval = menelaus_get_vtg_value(roof_mV, vcore_values, 564 ARRAY_SIZE(vcore_values)); 565 if (rval < 0) 566 return -EINVAL; 567 fval = menelaus_get_vtg_value(floor_mV, vcore_values, 568 ARRAY_SIZE(vcore_values)); 569 if (fval < 0) 570 return -EINVAL; 571 572 dev_dbg(&c->dev, "Setting VCORE FLOOR to %d mV and ROOF to %d mV\n", 573 floor_mV, roof_mV); 574 575 mutex_lock(&the_menelaus->lock); 576 ret = menelaus_write_reg(MENELAUS_VCORE_CTRL3, fval); 577 if (ret < 0) 578 goto out; 579 ret = menelaus_write_reg(MENELAUS_VCORE_CTRL4, rval); 580 if (ret < 0) 581 goto out; 582 if (!the_menelaus->vcore_hw_mode) { 583 val = menelaus_read_reg(MENELAUS_VCORE_CTRL1); 584 /* HW mode, turn OFF byte comparator */ 585 val |= (VCORE_CTRL1_HW_NSW | VCORE_CTRL1_BYP_COMP); 586 ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val); 587 the_menelaus->vcore_hw_mode = 1; 588 } 589 msleep(1); 590 out: 591 mutex_unlock(&the_menelaus->lock); 592 return ret; 593 } 594 595 static const struct menelaus_vtg vmem_vtg = { 596 .name = "VMEM", 597 .vtg_reg = MENELAUS_LDO_CTRL1, 598 .vtg_shift = 0, 599 .vtg_bits = 2, 600 .mode_reg = MENELAUS_LDO_CTRL3, 601 }; 602 603 static const struct menelaus_vtg_value vmem_values[] = { 604 { 1500, 0 }, 605 { 1800, 1 }, 606 { 1900, 2 }, 607 { 2500, 3 }, 608 }; 609 610 int menelaus_set_vmem(unsigned int mV) 611 { 612 int val; 613 614 if (mV == 0) 615 return menelaus_set_voltage(&vmem_vtg, 0, 0, 0); 616 617 val = menelaus_get_vtg_value(mV, vmem_values, ARRAY_SIZE(vmem_values)); 618 if (val < 0) 619 return -EINVAL; 620 return menelaus_set_voltage(&vmem_vtg, mV, val, 0x02); 621 } 622 EXPORT_SYMBOL(menelaus_set_vmem); 623 624 static const struct menelaus_vtg vio_vtg = { 625 .name = "VIO", 626 .vtg_reg = MENELAUS_LDO_CTRL1, 627 .vtg_shift = 2, 628 .vtg_bits = 2, 629 .mode_reg = MENELAUS_LDO_CTRL4, 630 }; 631 632 static const struct menelaus_vtg_value vio_values[] = { 633 { 1500, 0 }, 634 { 1800, 1 }, 635 { 2500, 2 }, 636 { 2800, 3 }, 637 }; 638 639 int menelaus_set_vio(unsigned int mV) 640 { 641 int val; 642 643 if (mV == 0) 644 return menelaus_set_voltage(&vio_vtg, 0, 0, 0); 645 646 val = menelaus_get_vtg_value(mV, vio_values, ARRAY_SIZE(vio_values)); 647 if (val < 0) 648 return -EINVAL; 649 return menelaus_set_voltage(&vio_vtg, mV, val, 0x02); 650 } 651 EXPORT_SYMBOL(menelaus_set_vio); 652 653 static const struct menelaus_vtg_value vdcdc_values[] = { 654 { 1500, 0 }, 655 { 1800, 1 }, 656 { 2000, 2 }, 657 { 2200, 3 }, 658 { 2400, 4 }, 659 { 2800, 5 }, 660 { 3000, 6 }, 661 { 3300, 7 }, 662 }; 663 664 static const struct menelaus_vtg vdcdc2_vtg = { 665 .name = "VDCDC2", 666 .vtg_reg = MENELAUS_DCDC_CTRL1, 667 .vtg_shift = 0, 668 .vtg_bits = 3, 669 .mode_reg = MENELAUS_DCDC_CTRL2, 670 }; 671 672 static const struct menelaus_vtg vdcdc3_vtg = { 673 .name = "VDCDC3", 674 .vtg_reg = MENELAUS_DCDC_CTRL1, 675 .vtg_shift = 3, 676 .vtg_bits = 3, 677 .mode_reg = MENELAUS_DCDC_CTRL3, 678 }; 679 680 int menelaus_set_vdcdc(int dcdc, unsigned int mV) 681 { 682 const struct menelaus_vtg *vtg; 683 int val; 684 685 if (dcdc != 2 && dcdc != 3) 686 return -EINVAL; 687 if (dcdc == 2) 688 vtg = &vdcdc2_vtg; 689 else 690 vtg = &vdcdc3_vtg; 691 692 if (mV == 0) 693 return menelaus_set_voltage(vtg, 0, 0, 0); 694 695 val = menelaus_get_vtg_value(mV, vdcdc_values, 696 ARRAY_SIZE(vdcdc_values)); 697 if (val < 0) 698 return -EINVAL; 699 return menelaus_set_voltage(vtg, mV, val, 0x03); 700 } 701 702 static const struct menelaus_vtg_value vmmc_values[] = { 703 { 1850, 0 }, 704 { 2800, 1 }, 705 { 3000, 2 }, 706 { 3100, 3 }, 707 }; 708 709 static const struct menelaus_vtg vmmc_vtg = { 710 .name = "VMMC", 711 .vtg_reg = MENELAUS_LDO_CTRL1, 712 .vtg_shift = 6, 713 .vtg_bits = 2, 714 .mode_reg = MENELAUS_LDO_CTRL7, 715 }; 716 717 int menelaus_set_vmmc(unsigned int mV) 718 { 719 int val; 720 721 if (mV == 0) 722 return menelaus_set_voltage(&vmmc_vtg, 0, 0, 0); 723 724 val = menelaus_get_vtg_value(mV, vmmc_values, ARRAY_SIZE(vmmc_values)); 725 if (val < 0) 726 return -EINVAL; 727 return menelaus_set_voltage(&vmmc_vtg, mV, val, 0x02); 728 } 729 EXPORT_SYMBOL(menelaus_set_vmmc); 730 731 732 static const struct menelaus_vtg_value vaux_values[] = { 733 { 1500, 0 }, 734 { 1800, 1 }, 735 { 2500, 2 }, 736 { 2800, 3 }, 737 }; 738 739 static const struct menelaus_vtg vaux_vtg = { 740 .name = "VAUX", 741 .vtg_reg = MENELAUS_LDO_CTRL1, 742 .vtg_shift = 4, 743 .vtg_bits = 2, 744 .mode_reg = MENELAUS_LDO_CTRL6, 745 }; 746 747 int menelaus_set_vaux(unsigned int mV) 748 { 749 int val; 750 751 if (mV == 0) 752 return menelaus_set_voltage(&vaux_vtg, 0, 0, 0); 753 754 val = menelaus_get_vtg_value(mV, vaux_values, ARRAY_SIZE(vaux_values)); 755 if (val < 0) 756 return -EINVAL; 757 return menelaus_set_voltage(&vaux_vtg, mV, val, 0x02); 758 } 759 EXPORT_SYMBOL(menelaus_set_vaux); 760 761 int menelaus_get_slot_pin_states(void) 762 { 763 return menelaus_read_reg(MENELAUS_MCT_PIN_ST); 764 } 765 EXPORT_SYMBOL(menelaus_get_slot_pin_states); 766 767 int menelaus_set_regulator_sleep(int enable, u32 val) 768 { 769 int t, ret; 770 struct i2c_client *c = the_menelaus->client; 771 772 mutex_lock(&the_menelaus->lock); 773 ret = menelaus_write_reg(MENELAUS_SLEEP_CTRL2, val); 774 if (ret < 0) 775 goto out; 776 777 dev_dbg(&c->dev, "regulator sleep configuration: %02x\n", val); 778 779 ret = menelaus_read_reg(MENELAUS_GPIO_CTRL); 780 if (ret < 0) 781 goto out; 782 t = (GPIO_CTRL_SLPCTLEN | GPIO3_DIR_INPUT); 783 if (enable) 784 ret |= t; 785 else 786 ret &= ~t; 787 ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret); 788 out: 789 mutex_unlock(&the_menelaus->lock); 790 return ret; 791 } 792 793 /*-----------------------------------------------------------------------*/ 794 795 /* Handles Menelaus interrupts. Does not run in interrupt context */ 796 static void menelaus_work(struct work_struct *_menelaus) 797 { 798 struct menelaus_chip *menelaus = 799 container_of(_menelaus, struct menelaus_chip, work); 800 void (*handler)(struct menelaus_chip *menelaus); 801 802 while (1) { 803 unsigned isr; 804 805 isr = (menelaus_read_reg(MENELAUS_INT_STATUS2) 806 & ~menelaus->mask2) << 8; 807 isr |= menelaus_read_reg(MENELAUS_INT_STATUS1) 808 & ~menelaus->mask1; 809 if (!isr) 810 break; 811 812 while (isr) { 813 int irq = fls(isr) - 1; 814 isr &= ~(1 << irq); 815 816 mutex_lock(&menelaus->lock); 817 menelaus_disable_irq(irq); 818 menelaus_ack_irq(irq); 819 handler = menelaus->handlers[irq]; 820 if (handler) 821 handler(menelaus); 822 menelaus_enable_irq(irq); 823 mutex_unlock(&menelaus->lock); 824 } 825 } 826 enable_irq(menelaus->client->irq); 827 } 828 829 /* 830 * We cannot use I2C in interrupt context, so we just schedule work. 831 */ 832 static irqreturn_t menelaus_irq(int irq, void *_menelaus) 833 { 834 struct menelaus_chip *menelaus = _menelaus; 835 836 disable_irq_nosync(irq); 837 (void)schedule_work(&menelaus->work); 838 839 return IRQ_HANDLED; 840 } 841 842 /*-----------------------------------------------------------------------*/ 843 844 /* 845 * The RTC needs to be set once, then it runs on backup battery power. 846 * It supports alarms, including system wake alarms (from some modes); 847 * and 1/second IRQs if requested. 848 */ 849 #ifdef CONFIG_RTC_DRV_TWL92330 850 851 #define RTC_CTRL_RTC_EN (1 << 0) 852 #define RTC_CTRL_AL_EN (1 << 1) 853 #define RTC_CTRL_MODE12 (1 << 2) 854 #define RTC_CTRL_EVERY_MASK (3 << 3) 855 #define RTC_CTRL_EVERY_SEC (0 << 3) 856 #define RTC_CTRL_EVERY_MIN (1 << 3) 857 #define RTC_CTRL_EVERY_HR (2 << 3) 858 #define RTC_CTRL_EVERY_DAY (3 << 3) 859 860 #define RTC_UPDATE_EVERY 0x08 861 862 #define RTC_HR_PM (1 << 7) 863 864 static void menelaus_to_time(char *regs, struct rtc_time *t) 865 { 866 t->tm_sec = bcd2bin(regs[0]); 867 t->tm_min = bcd2bin(regs[1]); 868 if (the_menelaus->rtc_control & RTC_CTRL_MODE12) { 869 t->tm_hour = bcd2bin(regs[2] & 0x1f) - 1; 870 if (regs[2] & RTC_HR_PM) 871 t->tm_hour += 12; 872 } else 873 t->tm_hour = bcd2bin(regs[2] & 0x3f); 874 t->tm_mday = bcd2bin(regs[3]); 875 t->tm_mon = bcd2bin(regs[4]) - 1; 876 t->tm_year = bcd2bin(regs[5]) + 100; 877 } 878 879 static int time_to_menelaus(struct rtc_time *t, int regnum) 880 { 881 int hour, status; 882 883 status = menelaus_write_reg(regnum++, bin2bcd(t->tm_sec)); 884 if (status < 0) 885 goto fail; 886 887 status = menelaus_write_reg(regnum++, bin2bcd(t->tm_min)); 888 if (status < 0) 889 goto fail; 890 891 if (the_menelaus->rtc_control & RTC_CTRL_MODE12) { 892 hour = t->tm_hour + 1; 893 if (hour > 12) 894 hour = RTC_HR_PM | bin2bcd(hour - 12); 895 else 896 hour = bin2bcd(hour); 897 } else 898 hour = bin2bcd(t->tm_hour); 899 status = menelaus_write_reg(regnum++, hour); 900 if (status < 0) 901 goto fail; 902 903 status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mday)); 904 if (status < 0) 905 goto fail; 906 907 status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mon + 1)); 908 if (status < 0) 909 goto fail; 910 911 status = menelaus_write_reg(regnum++, bin2bcd(t->tm_year - 100)); 912 if (status < 0) 913 goto fail; 914 915 return 0; 916 fail: 917 dev_err(&the_menelaus->client->dev, "rtc write reg %02x, err %d\n", 918 --regnum, status); 919 return status; 920 } 921 922 static int menelaus_read_time(struct device *dev, struct rtc_time *t) 923 { 924 struct i2c_msg msg[2]; 925 char regs[7]; 926 int status; 927 928 /* block read date and time registers */ 929 regs[0] = MENELAUS_RTC_SEC; 930 931 msg[0].addr = MENELAUS_I2C_ADDRESS; 932 msg[0].flags = 0; 933 msg[0].len = 1; 934 msg[0].buf = regs; 935 936 msg[1].addr = MENELAUS_I2C_ADDRESS; 937 msg[1].flags = I2C_M_RD; 938 msg[1].len = sizeof(regs); 939 msg[1].buf = regs; 940 941 status = i2c_transfer(the_menelaus->client->adapter, msg, 2); 942 if (status != 2) { 943 dev_err(dev, "%s error %d\n", "read", status); 944 return -EIO; 945 } 946 947 menelaus_to_time(regs, t); 948 t->tm_wday = bcd2bin(regs[6]); 949 950 return 0; 951 } 952 953 static int menelaus_set_time(struct device *dev, struct rtc_time *t) 954 { 955 int status; 956 957 /* write date and time registers */ 958 status = time_to_menelaus(t, MENELAUS_RTC_SEC); 959 if (status < 0) 960 return status; 961 status = menelaus_write_reg(MENELAUS_RTC_WKDAY, bin2bcd(t->tm_wday)); 962 if (status < 0) { 963 dev_err(&the_menelaus->client->dev, "rtc write reg %02x " 964 "err %d\n", MENELAUS_RTC_WKDAY, status); 965 return status; 966 } 967 968 /* now commit the write */ 969 status = menelaus_write_reg(MENELAUS_RTC_UPDATE, RTC_UPDATE_EVERY); 970 if (status < 0) 971 dev_err(&the_menelaus->client->dev, "rtc commit time, err %d\n", 972 status); 973 974 return 0; 975 } 976 977 static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w) 978 { 979 struct i2c_msg msg[2]; 980 char regs[6]; 981 int status; 982 983 /* block read alarm registers */ 984 regs[0] = MENELAUS_RTC_AL_SEC; 985 986 msg[0].addr = MENELAUS_I2C_ADDRESS; 987 msg[0].flags = 0; 988 msg[0].len = 1; 989 msg[0].buf = regs; 990 991 msg[1].addr = MENELAUS_I2C_ADDRESS; 992 msg[1].flags = I2C_M_RD; 993 msg[1].len = sizeof(regs); 994 msg[1].buf = regs; 995 996 status = i2c_transfer(the_menelaus->client->adapter, msg, 2); 997 if (status != 2) { 998 dev_err(dev, "%s error %d\n", "alarm read", status); 999 return -EIO; 1000 } 1001 1002 menelaus_to_time(regs, &w->time); 1003 1004 w->enabled = !!(the_menelaus->rtc_control & RTC_CTRL_AL_EN); 1005 1006 /* NOTE we *could* check if actually pending... */ 1007 w->pending = 0; 1008 1009 return 0; 1010 } 1011 1012 static int menelaus_set_alarm(struct device *dev, struct rtc_wkalrm *w) 1013 { 1014 int status; 1015 1016 if (the_menelaus->client->irq <= 0 && w->enabled) 1017 return -ENODEV; 1018 1019 /* clear previous alarm enable */ 1020 if (the_menelaus->rtc_control & RTC_CTRL_AL_EN) { 1021 the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; 1022 status = menelaus_write_reg(MENELAUS_RTC_CTRL, 1023 the_menelaus->rtc_control); 1024 if (status < 0) 1025 return status; 1026 } 1027 1028 /* write alarm registers */ 1029 status = time_to_menelaus(&w->time, MENELAUS_RTC_AL_SEC); 1030 if (status < 0) 1031 return status; 1032 1033 /* enable alarm if requested */ 1034 if (w->enabled) { 1035 the_menelaus->rtc_control |= RTC_CTRL_AL_EN; 1036 status = menelaus_write_reg(MENELAUS_RTC_CTRL, 1037 the_menelaus->rtc_control); 1038 } 1039 1040 return status; 1041 } 1042 1043 #ifdef CONFIG_RTC_INTF_DEV 1044 1045 static void menelaus_rtc_update_work(struct menelaus_chip *m) 1046 { 1047 /* report 1/sec update */ 1048 local_irq_disable(); 1049 rtc_update_irq(m->rtc, 1, RTC_IRQF | RTC_UF); 1050 local_irq_enable(); 1051 } 1052 1053 static int menelaus_ioctl(struct device *dev, unsigned cmd, unsigned long arg) 1054 { 1055 int status; 1056 1057 if (the_menelaus->client->irq <= 0) 1058 return -ENOIOCTLCMD; 1059 1060 switch (cmd) { 1061 /* alarm IRQ */ 1062 case RTC_AIE_ON: 1063 if (the_menelaus->rtc_control & RTC_CTRL_AL_EN) 1064 return 0; 1065 the_menelaus->rtc_control |= RTC_CTRL_AL_EN; 1066 break; 1067 case RTC_AIE_OFF: 1068 if (!(the_menelaus->rtc_control & RTC_CTRL_AL_EN)) 1069 return 0; 1070 the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; 1071 break; 1072 /* 1/second "update" IRQ */ 1073 case RTC_UIE_ON: 1074 if (the_menelaus->uie) 1075 return 0; 1076 status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ); 1077 status = menelaus_add_irq_work(MENELAUS_RTCTMR_IRQ, 1078 menelaus_rtc_update_work); 1079 if (status == 0) 1080 the_menelaus->uie = 1; 1081 return status; 1082 case RTC_UIE_OFF: 1083 if (!the_menelaus->uie) 1084 return 0; 1085 status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ); 1086 if (status == 0) 1087 the_menelaus->uie = 0; 1088 return status; 1089 default: 1090 return -ENOIOCTLCMD; 1091 } 1092 return menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control); 1093 } 1094 1095 #else 1096 #define menelaus_ioctl NULL 1097 #endif 1098 1099 /* REVISIT no compensation register support ... */ 1100 1101 static const struct rtc_class_ops menelaus_rtc_ops = { 1102 .ioctl = menelaus_ioctl, 1103 .read_time = menelaus_read_time, 1104 .set_time = menelaus_set_time, 1105 .read_alarm = menelaus_read_alarm, 1106 .set_alarm = menelaus_set_alarm, 1107 }; 1108 1109 static void menelaus_rtc_alarm_work(struct menelaus_chip *m) 1110 { 1111 /* report alarm */ 1112 local_irq_disable(); 1113 rtc_update_irq(m->rtc, 1, RTC_IRQF | RTC_AF); 1114 local_irq_enable(); 1115 1116 /* then disable it; alarms are oneshot */ 1117 the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; 1118 menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control); 1119 } 1120 1121 static inline void menelaus_rtc_init(struct menelaus_chip *m) 1122 { 1123 int alarm = (m->client->irq > 0); 1124 1125 /* assume 32KDETEN pin is pulled high */ 1126 if (!(menelaus_read_reg(MENELAUS_OSC_CTRL) & 0x80)) { 1127 dev_dbg(&m->client->dev, "no 32k oscillator\n"); 1128 return; 1129 } 1130 1131 /* support RTC alarm; it can issue wakeups */ 1132 if (alarm) { 1133 if (menelaus_add_irq_work(MENELAUS_RTCALM_IRQ, 1134 menelaus_rtc_alarm_work) < 0) { 1135 dev_err(&m->client->dev, "can't handle RTC alarm\n"); 1136 return; 1137 } 1138 device_init_wakeup(&m->client->dev, 1); 1139 } 1140 1141 /* be sure RTC is enabled; allow 1/sec irqs; leave 12hr mode alone */ 1142 m->rtc_control = menelaus_read_reg(MENELAUS_RTC_CTRL); 1143 if (!(m->rtc_control & RTC_CTRL_RTC_EN) 1144 || (m->rtc_control & RTC_CTRL_AL_EN) 1145 || (m->rtc_control & RTC_CTRL_EVERY_MASK)) { 1146 if (!(m->rtc_control & RTC_CTRL_RTC_EN)) { 1147 dev_warn(&m->client->dev, "rtc clock needs setting\n"); 1148 m->rtc_control |= RTC_CTRL_RTC_EN; 1149 } 1150 m->rtc_control &= ~RTC_CTRL_EVERY_MASK; 1151 m->rtc_control &= ~RTC_CTRL_AL_EN; 1152 menelaus_write_reg(MENELAUS_RTC_CTRL, m->rtc_control); 1153 } 1154 1155 m->rtc = rtc_device_register(DRIVER_NAME, 1156 &m->client->dev, 1157 &menelaus_rtc_ops, THIS_MODULE); 1158 if (IS_ERR(m->rtc)) { 1159 if (alarm) { 1160 menelaus_remove_irq_work(MENELAUS_RTCALM_IRQ); 1161 device_init_wakeup(&m->client->dev, 0); 1162 } 1163 dev_err(&m->client->dev, "can't register RTC: %d\n", 1164 (int) PTR_ERR(m->rtc)); 1165 the_menelaus->rtc = NULL; 1166 } 1167 } 1168 1169 #else 1170 1171 static inline void menelaus_rtc_init(struct menelaus_chip *m) 1172 { 1173 /* nothing */ 1174 } 1175 1176 #endif 1177 1178 /*-----------------------------------------------------------------------*/ 1179 1180 static struct i2c_driver menelaus_i2c_driver; 1181 1182 static int menelaus_probe(struct i2c_client *client, 1183 const struct i2c_device_id *id) 1184 { 1185 struct menelaus_chip *menelaus; 1186 int rev = 0; 1187 int err = 0; 1188 struct menelaus_platform_data *menelaus_pdata = 1189 dev_get_platdata(&client->dev); 1190 1191 if (the_menelaus) { 1192 dev_dbg(&client->dev, "only one %s for now\n", 1193 DRIVER_NAME); 1194 return -ENODEV; 1195 } 1196 1197 menelaus = devm_kzalloc(&client->dev, sizeof(*menelaus), GFP_KERNEL); 1198 if (!menelaus) 1199 return -ENOMEM; 1200 1201 i2c_set_clientdata(client, menelaus); 1202 1203 the_menelaus = menelaus; 1204 menelaus->client = client; 1205 1206 /* If a true probe check the device */ 1207 rev = menelaus_read_reg(MENELAUS_REV); 1208 if (rev < 0) { 1209 pr_err(DRIVER_NAME ": device not found"); 1210 return -ENODEV; 1211 } 1212 1213 /* Ack and disable all Menelaus interrupts */ 1214 menelaus_write_reg(MENELAUS_INT_ACK1, 0xff); 1215 menelaus_write_reg(MENELAUS_INT_ACK2, 0xff); 1216 menelaus_write_reg(MENELAUS_INT_MASK1, 0xff); 1217 menelaus_write_reg(MENELAUS_INT_MASK2, 0xff); 1218 menelaus->mask1 = 0xff; 1219 menelaus->mask2 = 0xff; 1220 1221 /* Set output buffer strengths */ 1222 menelaus_write_reg(MENELAUS_MCT_CTRL1, 0x73); 1223 1224 if (client->irq > 0) { 1225 err = request_irq(client->irq, menelaus_irq, 0, 1226 DRIVER_NAME, menelaus); 1227 if (err) { 1228 dev_dbg(&client->dev, "can't get IRQ %d, err %d\n", 1229 client->irq, err); 1230 return err; 1231 } 1232 } 1233 1234 mutex_init(&menelaus->lock); 1235 INIT_WORK(&menelaus->work, menelaus_work); 1236 1237 pr_info("Menelaus rev %d.%d\n", rev >> 4, rev & 0x0f); 1238 1239 err = menelaus_read_reg(MENELAUS_VCORE_CTRL1); 1240 if (err < 0) 1241 goto fail; 1242 if (err & BIT(7)) 1243 menelaus->vcore_hw_mode = 1; 1244 else 1245 menelaus->vcore_hw_mode = 0; 1246 1247 if (menelaus_pdata != NULL && menelaus_pdata->late_init != NULL) { 1248 err = menelaus_pdata->late_init(&client->dev); 1249 if (err < 0) 1250 goto fail; 1251 } 1252 1253 menelaus_rtc_init(menelaus); 1254 1255 return 0; 1256 fail: 1257 free_irq(client->irq, menelaus); 1258 flush_work(&menelaus->work); 1259 return err; 1260 } 1261 1262 static int __exit menelaus_remove(struct i2c_client *client) 1263 { 1264 struct menelaus_chip *menelaus = i2c_get_clientdata(client); 1265 1266 free_irq(client->irq, menelaus); 1267 flush_work(&menelaus->work); 1268 the_menelaus = NULL; 1269 return 0; 1270 } 1271 1272 static const struct i2c_device_id menelaus_id[] = { 1273 { "menelaus", 0 }, 1274 { } 1275 }; 1276 MODULE_DEVICE_TABLE(i2c, menelaus_id); 1277 1278 static struct i2c_driver menelaus_i2c_driver = { 1279 .driver = { 1280 .name = DRIVER_NAME, 1281 }, 1282 .probe = menelaus_probe, 1283 .remove = __exit_p(menelaus_remove), 1284 .id_table = menelaus_id, 1285 }; 1286 1287 module_i2c_driver(menelaus_i2c_driver); 1288 1289 MODULE_AUTHOR("Texas Instruments, Inc. (and others)"); 1290 MODULE_DESCRIPTION("I2C interface for Menelaus."); 1291 MODULE_LICENSE("GPL"); 1292