108bf1c0aSAshish Jangam /* 208bf1c0aSAshish Jangam * da9052-regulator.c: Regulator driver for DA9052 308bf1c0aSAshish Jangam * 408bf1c0aSAshish Jangam * Copyright(c) 2011 Dialog Semiconductor Ltd. 508bf1c0aSAshish Jangam * 608bf1c0aSAshish Jangam * Author: David Dajun Chen <dchen@diasemi.com> 708bf1c0aSAshish Jangam * 808bf1c0aSAshish Jangam * This program is free software; you can redistribute it and/or modify 908bf1c0aSAshish Jangam * it under the terms of the GNU General Public License as published by 1008bf1c0aSAshish Jangam * the Free Software Foundation; either version 2 of the License, or 1108bf1c0aSAshish Jangam * (at your option) any later version. 1208bf1c0aSAshish Jangam * 1308bf1c0aSAshish Jangam */ 1408bf1c0aSAshish Jangam 1508bf1c0aSAshish Jangam #include <linux/module.h> 1608bf1c0aSAshish Jangam #include <linux/moduleparam.h> 1708bf1c0aSAshish Jangam #include <linux/init.h> 1808bf1c0aSAshish Jangam #include <linux/err.h> 1908bf1c0aSAshish Jangam #include <linux/platform_device.h> 2008bf1c0aSAshish Jangam #include <linux/regulator/driver.h> 2108bf1c0aSAshish Jangam #include <linux/regulator/machine.h> 2208bf1c0aSAshish Jangam 2308bf1c0aSAshish Jangam #include <linux/mfd/da9052/da9052.h> 2408bf1c0aSAshish Jangam #include <linux/mfd/da9052/reg.h> 2508bf1c0aSAshish Jangam #include <linux/mfd/da9052/pdata.h> 2608bf1c0aSAshish Jangam 2708bf1c0aSAshish Jangam /* Buck step size */ 2808bf1c0aSAshish Jangam #define DA9052_BUCK_PERI_3uV_STEP 100000 2908bf1c0aSAshish Jangam #define DA9052_BUCK_PERI_REG_MAP_UPTO_3uV 24 3008bf1c0aSAshish Jangam #define DA9052_CONST_3uV 3000000 3108bf1c0aSAshish Jangam 3208bf1c0aSAshish Jangam #define DA9052_MIN_UA 0 3308bf1c0aSAshish Jangam #define DA9052_MAX_UA 3 3408bf1c0aSAshish Jangam #define DA9052_CURRENT_RANGE 4 3508bf1c0aSAshish Jangam 3608bf1c0aSAshish Jangam /* Bit masks */ 3708bf1c0aSAshish Jangam #define DA9052_BUCK_ILIM_MASK_EVEN 0x0c 3808bf1c0aSAshish Jangam #define DA9052_BUCK_ILIM_MASK_ODD 0xc0 3908bf1c0aSAshish Jangam 4008bf1c0aSAshish Jangam static const u32 da9052_current_limits[3][4] = { 4108bf1c0aSAshish Jangam {700000, 800000, 1000000, 1200000}, /* DA9052-BC BUCKs */ 4208bf1c0aSAshish Jangam {1600000, 2000000, 2400000, 3000000}, /* DA9053-AA/Bx BUCK-CORE */ 4308bf1c0aSAshish Jangam {800000, 1000000, 1200000, 1500000}, /* DA9053-AA/Bx BUCK-PRO, 4408bf1c0aSAshish Jangam * BUCK-MEM and BUCK-PERI 4508bf1c0aSAshish Jangam */ 4608bf1c0aSAshish Jangam }; 4708bf1c0aSAshish Jangam 4808bf1c0aSAshish Jangam struct da9052_regulator_info { 4908bf1c0aSAshish Jangam struct regulator_desc reg_desc; 5008bf1c0aSAshish Jangam int step_uV; 5108bf1c0aSAshish Jangam int min_uV; 5208bf1c0aSAshish Jangam int max_uV; 5308bf1c0aSAshish Jangam unsigned char volt_shift; 5408bf1c0aSAshish Jangam unsigned char en_bit; 5508bf1c0aSAshish Jangam unsigned char activate_bit; 5608bf1c0aSAshish Jangam }; 5708bf1c0aSAshish Jangam 5808bf1c0aSAshish Jangam struct da9052_regulator { 5908bf1c0aSAshish Jangam struct da9052 *da9052; 6008bf1c0aSAshish Jangam struct da9052_regulator_info *info; 6108bf1c0aSAshish Jangam struct regulator_dev *rdev; 6208bf1c0aSAshish Jangam }; 6308bf1c0aSAshish Jangam 6408bf1c0aSAshish Jangam static int verify_range(struct da9052_regulator_info *info, 6508bf1c0aSAshish Jangam int min_uV, int max_uV) 6608bf1c0aSAshish Jangam { 6708bf1c0aSAshish Jangam if (min_uV > info->max_uV || max_uV < info->min_uV) 6808bf1c0aSAshish Jangam return -EINVAL; 6908bf1c0aSAshish Jangam 7008bf1c0aSAshish Jangam return 0; 7108bf1c0aSAshish Jangam } 7208bf1c0aSAshish Jangam 7308bf1c0aSAshish Jangam static int da9052_regulator_enable(struct regulator_dev *rdev) 7408bf1c0aSAshish Jangam { 7508bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 7608bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 7708bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 7808bf1c0aSAshish Jangam 7908bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, 8008bf1c0aSAshish Jangam DA9052_BUCKCORE_REG + offset, 8108bf1c0aSAshish Jangam 1 << info->en_bit, 1 << info->en_bit); 8208bf1c0aSAshish Jangam } 8308bf1c0aSAshish Jangam 8408bf1c0aSAshish Jangam static int da9052_regulator_disable(struct regulator_dev *rdev) 8508bf1c0aSAshish Jangam { 8608bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 8708bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 8808bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 8908bf1c0aSAshish Jangam 9008bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, 9108bf1c0aSAshish Jangam DA9052_BUCKCORE_REG + offset, 9208bf1c0aSAshish Jangam 1 << info->en_bit, 0); 9308bf1c0aSAshish Jangam } 9408bf1c0aSAshish Jangam 9508bf1c0aSAshish Jangam static int da9052_regulator_is_enabled(struct regulator_dev *rdev) 9608bf1c0aSAshish Jangam { 9708bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 9808bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 9908bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 10008bf1c0aSAshish Jangam int ret; 10108bf1c0aSAshish Jangam 10208bf1c0aSAshish Jangam ret = da9052_reg_read(regulator->da9052, DA9052_BUCKCORE_REG + offset); 10308bf1c0aSAshish Jangam if (ret < 0) 10408bf1c0aSAshish Jangam return ret; 10508bf1c0aSAshish Jangam 10608bf1c0aSAshish Jangam return ret & (1 << info->en_bit); 10708bf1c0aSAshish Jangam } 10808bf1c0aSAshish Jangam 10908bf1c0aSAshish Jangam static int da9052_dcdc_get_current_limit(struct regulator_dev *rdev) 11008bf1c0aSAshish Jangam { 11108bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 11208bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 11308bf1c0aSAshish Jangam int ret, row = 2; 11408bf1c0aSAshish Jangam 11508bf1c0aSAshish Jangam ret = da9052_reg_read(regulator->da9052, DA9052_BUCKA_REG + offset/2); 11608bf1c0aSAshish Jangam if (ret < 0) 11708bf1c0aSAshish Jangam return ret; 11808bf1c0aSAshish Jangam 11908bf1c0aSAshish Jangam /* Determine the even or odd position of the buck current limit 12008bf1c0aSAshish Jangam * register field 12108bf1c0aSAshish Jangam */ 12208bf1c0aSAshish Jangam if (offset % 2 == 0) 12308bf1c0aSAshish Jangam ret = (ret & DA9052_BUCK_ILIM_MASK_EVEN) >> 2; 12408bf1c0aSAshish Jangam else 12508bf1c0aSAshish Jangam ret = (ret & DA9052_BUCK_ILIM_MASK_ODD) >> 6; 12608bf1c0aSAshish Jangam 12708bf1c0aSAshish Jangam /* Select the appropriate current limit range */ 12808bf1c0aSAshish Jangam if (regulator->da9052->chip_id == DA9052) 12908bf1c0aSAshish Jangam row = 0; 13008bf1c0aSAshish Jangam else if (offset == 0) 13108bf1c0aSAshish Jangam row = 1; 13208bf1c0aSAshish Jangam 13308bf1c0aSAshish Jangam return da9052_current_limits[row][ret]; 13408bf1c0aSAshish Jangam } 13508bf1c0aSAshish Jangam 13608bf1c0aSAshish Jangam static int da9052_dcdc_set_current_limit(struct regulator_dev *rdev, int min_uA, 13708bf1c0aSAshish Jangam int max_uA) 13808bf1c0aSAshish Jangam { 13908bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 14008bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 14108bf1c0aSAshish Jangam int reg_val = 0; 14208bf1c0aSAshish Jangam int i, row = 2; 14308bf1c0aSAshish Jangam 14408bf1c0aSAshish Jangam /* Select the appropriate current limit range */ 14508bf1c0aSAshish Jangam if (regulator->da9052->chip_id == DA9052) 14608bf1c0aSAshish Jangam row = 0; 14708bf1c0aSAshish Jangam else if (offset == 0) 14808bf1c0aSAshish Jangam row = 1; 14908bf1c0aSAshish Jangam 15008bf1c0aSAshish Jangam if (min_uA > da9052_current_limits[row][DA9052_MAX_UA] || 15108bf1c0aSAshish Jangam max_uA < da9052_current_limits[row][DA9052_MIN_UA]) 15208bf1c0aSAshish Jangam return -EINVAL; 15308bf1c0aSAshish Jangam 15408bf1c0aSAshish Jangam for (i = 0; i < DA9052_CURRENT_RANGE; i++) { 15508bf1c0aSAshish Jangam if (min_uA <= da9052_current_limits[row][i]) { 15608bf1c0aSAshish Jangam reg_val = i; 15708bf1c0aSAshish Jangam break; 15808bf1c0aSAshish Jangam } 15908bf1c0aSAshish Jangam } 16008bf1c0aSAshish Jangam 16108bf1c0aSAshish Jangam /* Determine the even or odd position of the buck current limit 16208bf1c0aSAshish Jangam * register field 16308bf1c0aSAshish Jangam */ 16408bf1c0aSAshish Jangam if (offset % 2 == 0) 16508bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, 16608bf1c0aSAshish Jangam DA9052_BUCKA_REG + offset/2, 16708bf1c0aSAshish Jangam DA9052_BUCK_ILIM_MASK_EVEN, 16808bf1c0aSAshish Jangam reg_val << 2); 16908bf1c0aSAshish Jangam else 17008bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, 17108bf1c0aSAshish Jangam DA9052_BUCKA_REG + offset/2, 17208bf1c0aSAshish Jangam DA9052_BUCK_ILIM_MASK_ODD, 17308bf1c0aSAshish Jangam reg_val << 6); 17408bf1c0aSAshish Jangam } 17508bf1c0aSAshish Jangam 17608bf1c0aSAshish Jangam static int da9052_list_buckperi_voltage(struct regulator_dev *rdev, 17708bf1c0aSAshish Jangam unsigned int selector) 17808bf1c0aSAshish Jangam { 17908bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 18008bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 18108bf1c0aSAshish Jangam int volt_uV; 18208bf1c0aSAshish Jangam 18308bf1c0aSAshish Jangam if ((regulator->da9052->chip_id == DA9052) && 18408bf1c0aSAshish Jangam (selector >= DA9052_BUCK_PERI_REG_MAP_UPTO_3uV)) { 18508bf1c0aSAshish Jangam volt_uV = ((DA9052_BUCK_PERI_REG_MAP_UPTO_3uV * info->step_uV) 18608bf1c0aSAshish Jangam + info->min_uV); 18708bf1c0aSAshish Jangam volt_uV += (selector - DA9052_BUCK_PERI_REG_MAP_UPTO_3uV) 18808bf1c0aSAshish Jangam * (DA9052_BUCK_PERI_3uV_STEP); 18908bf1c0aSAshish Jangam } else 19008bf1c0aSAshish Jangam volt_uV = (selector * info->step_uV) + info->min_uV; 19108bf1c0aSAshish Jangam 19208bf1c0aSAshish Jangam if (volt_uV > info->max_uV) 19308bf1c0aSAshish Jangam return -EINVAL; 19408bf1c0aSAshish Jangam 19508bf1c0aSAshish Jangam return volt_uV; 19608bf1c0aSAshish Jangam } 19708bf1c0aSAshish Jangam 19808bf1c0aSAshish Jangam static int da9052_list_voltage(struct regulator_dev *rdev, 19908bf1c0aSAshish Jangam unsigned int selector) 20008bf1c0aSAshish Jangam { 20108bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 20208bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 20308bf1c0aSAshish Jangam int volt_uV; 20408bf1c0aSAshish Jangam 20508bf1c0aSAshish Jangam volt_uV = info->min_uV + info->step_uV * selector; 20608bf1c0aSAshish Jangam 20708bf1c0aSAshish Jangam if (volt_uV > info->max_uV) 20808bf1c0aSAshish Jangam return -EINVAL; 20908bf1c0aSAshish Jangam 21008bf1c0aSAshish Jangam return volt_uV; 21108bf1c0aSAshish Jangam } 21208bf1c0aSAshish Jangam 21308bf1c0aSAshish Jangam static int da9052_regulator_set_voltage_int(struct regulator_dev *rdev, 21408bf1c0aSAshish Jangam int min_uV, int max_uV, 21508bf1c0aSAshish Jangam unsigned int *selector) 21608bf1c0aSAshish Jangam { 21708bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 21808bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 21908bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 22008bf1c0aSAshish Jangam int ret; 22108bf1c0aSAshish Jangam 22208bf1c0aSAshish Jangam ret = verify_range(info, min_uV, max_uV); 22308bf1c0aSAshish Jangam if (ret < 0) 22408bf1c0aSAshish Jangam return ret; 22508bf1c0aSAshish Jangam 22608bf1c0aSAshish Jangam if (min_uV < info->min_uV) 22708bf1c0aSAshish Jangam min_uV = info->min_uV; 22808bf1c0aSAshish Jangam 22908bf1c0aSAshish Jangam *selector = (min_uV - info->min_uV) / info->step_uV; 23008bf1c0aSAshish Jangam 23108bf1c0aSAshish Jangam ret = da9052_list_voltage(rdev, *selector); 23208bf1c0aSAshish Jangam if (ret < 0) 23308bf1c0aSAshish Jangam return ret; 23408bf1c0aSAshish Jangam 23508bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, 23608bf1c0aSAshish Jangam DA9052_BUCKCORE_REG + offset, 23708bf1c0aSAshish Jangam (1 << info->volt_shift) - 1, *selector); 23808bf1c0aSAshish Jangam } 23908bf1c0aSAshish Jangam 24008bf1c0aSAshish Jangam static int da9052_set_ldo_voltage(struct regulator_dev *rdev, 24108bf1c0aSAshish Jangam int min_uV, int max_uV, 24208bf1c0aSAshish Jangam unsigned int *selector) 24308bf1c0aSAshish Jangam { 24408bf1c0aSAshish Jangam return da9052_regulator_set_voltage_int(rdev, min_uV, max_uV, selector); 24508bf1c0aSAshish Jangam } 24608bf1c0aSAshish Jangam 24708bf1c0aSAshish Jangam static int da9052_set_ldo5_6_voltage(struct regulator_dev *rdev, 24808bf1c0aSAshish Jangam int min_uV, int max_uV, 24908bf1c0aSAshish Jangam unsigned int *selector) 25008bf1c0aSAshish Jangam { 25108bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 25208bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 25308bf1c0aSAshish Jangam int ret; 25408bf1c0aSAshish Jangam 25508bf1c0aSAshish Jangam ret = da9052_regulator_set_voltage_int(rdev, min_uV, max_uV, selector); 25608bf1c0aSAshish Jangam if (ret < 0) 25708bf1c0aSAshish Jangam return ret; 25808bf1c0aSAshish Jangam 25908bf1c0aSAshish Jangam /* Some LDOs are DVC controlled which requires enabling of 26008bf1c0aSAshish Jangam * the LDO activate bit to implment the changes on the 26108bf1c0aSAshish Jangam * LDO output. 26208bf1c0aSAshish Jangam */ 26308bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, DA9052_SUPPLY_REG, 0, 26408bf1c0aSAshish Jangam info->activate_bit); 26508bf1c0aSAshish Jangam } 26608bf1c0aSAshish Jangam 26708bf1c0aSAshish Jangam static int da9052_set_dcdc_voltage(struct regulator_dev *rdev, 26808bf1c0aSAshish Jangam int min_uV, int max_uV, 26908bf1c0aSAshish Jangam unsigned int *selector) 27008bf1c0aSAshish Jangam { 27108bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 27208bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 27308bf1c0aSAshish Jangam int ret; 27408bf1c0aSAshish Jangam 27508bf1c0aSAshish Jangam ret = da9052_regulator_set_voltage_int(rdev, min_uV, max_uV, selector); 27608bf1c0aSAshish Jangam if (ret < 0) 27708bf1c0aSAshish Jangam return ret; 27808bf1c0aSAshish Jangam 27908bf1c0aSAshish Jangam /* Some DCDCs are DVC controlled which requires enabling of 28008bf1c0aSAshish Jangam * the DCDC activate bit to implment the changes on the 28108bf1c0aSAshish Jangam * DCDC output. 28208bf1c0aSAshish Jangam */ 28308bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, DA9052_SUPPLY_REG, 0, 28408bf1c0aSAshish Jangam info->activate_bit); 28508bf1c0aSAshish Jangam } 28608bf1c0aSAshish Jangam 28708bf1c0aSAshish Jangam static int da9052_get_regulator_voltage_sel(struct regulator_dev *rdev) 28808bf1c0aSAshish Jangam { 28908bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 29008bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 29108bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 29208bf1c0aSAshish Jangam int ret; 29308bf1c0aSAshish Jangam 29408bf1c0aSAshish Jangam ret = da9052_reg_read(regulator->da9052, DA9052_BUCKCORE_REG + offset); 29508bf1c0aSAshish Jangam if (ret < 0) 29608bf1c0aSAshish Jangam return ret; 29708bf1c0aSAshish Jangam 29808bf1c0aSAshish Jangam ret &= ((1 << info->volt_shift) - 1); 29908bf1c0aSAshish Jangam 30008bf1c0aSAshish Jangam return ret; 30108bf1c0aSAshish Jangam } 30208bf1c0aSAshish Jangam 30308bf1c0aSAshish Jangam static int da9052_set_buckperi_voltage(struct regulator_dev *rdev, int min_uV, 30408bf1c0aSAshish Jangam int max_uV, unsigned int *selector) 30508bf1c0aSAshish Jangam { 30608bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 30708bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 30808bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 30908bf1c0aSAshish Jangam int ret; 31008bf1c0aSAshish Jangam 31108bf1c0aSAshish Jangam ret = verify_range(info, min_uV, max_uV); 31208bf1c0aSAshish Jangam if (ret < 0) 31308bf1c0aSAshish Jangam return ret; 31408bf1c0aSAshish Jangam 31508bf1c0aSAshish Jangam if (min_uV < info->min_uV) 31608bf1c0aSAshish Jangam min_uV = info->min_uV; 31708bf1c0aSAshish Jangam 31808bf1c0aSAshish Jangam if ((regulator->da9052->chip_id == DA9052) && 31908bf1c0aSAshish Jangam (min_uV >= DA9052_CONST_3uV)) 32008bf1c0aSAshish Jangam *selector = DA9052_BUCK_PERI_REG_MAP_UPTO_3uV + 32108bf1c0aSAshish Jangam ((min_uV - DA9052_CONST_3uV) / 32208bf1c0aSAshish Jangam (DA9052_BUCK_PERI_3uV_STEP)); 32308bf1c0aSAshish Jangam else 32408bf1c0aSAshish Jangam *selector = (min_uV - info->min_uV) / info->step_uV; 32508bf1c0aSAshish Jangam 32608bf1c0aSAshish Jangam ret = da9052_list_buckperi_voltage(rdev, *selector); 32708bf1c0aSAshish Jangam if (ret < 0) 32808bf1c0aSAshish Jangam return ret; 32908bf1c0aSAshish Jangam 33008bf1c0aSAshish Jangam return da9052_reg_update(regulator->da9052, 33108bf1c0aSAshish Jangam DA9052_BUCKCORE_REG + offset, 33208bf1c0aSAshish Jangam (1 << info->volt_shift) - 1, *selector); 33308bf1c0aSAshish Jangam } 33408bf1c0aSAshish Jangam 33508bf1c0aSAshish Jangam static int da9052_get_buckperi_voltage_sel(struct regulator_dev *rdev) 33608bf1c0aSAshish Jangam { 33708bf1c0aSAshish Jangam struct da9052_regulator *regulator = rdev_get_drvdata(rdev); 33808bf1c0aSAshish Jangam struct da9052_regulator_info *info = regulator->info; 33908bf1c0aSAshish Jangam int offset = rdev_get_id(rdev); 34008bf1c0aSAshish Jangam int ret; 34108bf1c0aSAshish Jangam 34208bf1c0aSAshish Jangam ret = da9052_reg_read(regulator->da9052, DA9052_BUCKCORE_REG + offset); 34308bf1c0aSAshish Jangam if (ret < 0) 34408bf1c0aSAshish Jangam return ret; 34508bf1c0aSAshish Jangam 34608bf1c0aSAshish Jangam ret &= ((1 << info->volt_shift) - 1); 34708bf1c0aSAshish Jangam 34808bf1c0aSAshish Jangam return ret; 34908bf1c0aSAshish Jangam } 35008bf1c0aSAshish Jangam 35108bf1c0aSAshish Jangam static struct regulator_ops da9052_buckperi_ops = { 35208bf1c0aSAshish Jangam .list_voltage = da9052_list_buckperi_voltage, 35308bf1c0aSAshish Jangam .get_voltage_sel = da9052_get_buckperi_voltage_sel, 35408bf1c0aSAshish Jangam .set_voltage = da9052_set_buckperi_voltage, 35508bf1c0aSAshish Jangam 35608bf1c0aSAshish Jangam .get_current_limit = da9052_dcdc_get_current_limit, 35708bf1c0aSAshish Jangam .set_current_limit = da9052_dcdc_set_current_limit, 35808bf1c0aSAshish Jangam 35908bf1c0aSAshish Jangam .is_enabled = da9052_regulator_is_enabled, 36008bf1c0aSAshish Jangam .enable = da9052_regulator_enable, 36108bf1c0aSAshish Jangam .disable = da9052_regulator_disable, 36208bf1c0aSAshish Jangam }; 36308bf1c0aSAshish Jangam 36408bf1c0aSAshish Jangam static struct regulator_ops da9052_dcdc_ops = { 36508bf1c0aSAshish Jangam .set_voltage = da9052_set_dcdc_voltage, 36608bf1c0aSAshish Jangam .get_current_limit = da9052_dcdc_get_current_limit, 36708bf1c0aSAshish Jangam .set_current_limit = da9052_dcdc_set_current_limit, 36808bf1c0aSAshish Jangam 36908bf1c0aSAshish Jangam .list_voltage = da9052_list_voltage, 37008bf1c0aSAshish Jangam .get_voltage_sel = da9052_get_regulator_voltage_sel, 37108bf1c0aSAshish Jangam .is_enabled = da9052_regulator_is_enabled, 37208bf1c0aSAshish Jangam .enable = da9052_regulator_enable, 37308bf1c0aSAshish Jangam .disable = da9052_regulator_disable, 37408bf1c0aSAshish Jangam }; 37508bf1c0aSAshish Jangam 37608bf1c0aSAshish Jangam static struct regulator_ops da9052_ldo5_6_ops = { 37708bf1c0aSAshish Jangam .set_voltage = da9052_set_ldo5_6_voltage, 37808bf1c0aSAshish Jangam 37908bf1c0aSAshish Jangam .list_voltage = da9052_list_voltage, 38008bf1c0aSAshish Jangam .get_voltage_sel = da9052_get_regulator_voltage_sel, 38108bf1c0aSAshish Jangam .is_enabled = da9052_regulator_is_enabled, 38208bf1c0aSAshish Jangam .enable = da9052_regulator_enable, 38308bf1c0aSAshish Jangam .disable = da9052_regulator_disable, 38408bf1c0aSAshish Jangam }; 38508bf1c0aSAshish Jangam 38608bf1c0aSAshish Jangam static struct regulator_ops da9052_ldo_ops = { 38708bf1c0aSAshish Jangam .set_voltage = da9052_set_ldo_voltage, 38808bf1c0aSAshish Jangam 38908bf1c0aSAshish Jangam .list_voltage = da9052_list_voltage, 39008bf1c0aSAshish Jangam .get_voltage_sel = da9052_get_regulator_voltage_sel, 39108bf1c0aSAshish Jangam .is_enabled = da9052_regulator_is_enabled, 39208bf1c0aSAshish Jangam .enable = da9052_regulator_enable, 39308bf1c0aSAshish Jangam .disable = da9052_regulator_disable, 39408bf1c0aSAshish Jangam }; 39508bf1c0aSAshish Jangam 39608bf1c0aSAshish Jangam #define DA9052_LDO5_6(_id, step, min, max, sbits, ebits, abits) \ 39708bf1c0aSAshish Jangam {\ 39808bf1c0aSAshish Jangam .reg_desc = {\ 39908bf1c0aSAshish Jangam .name = "LDO" #_id,\ 40008bf1c0aSAshish Jangam .ops = &da9052_ldo5_6_ops,\ 40108bf1c0aSAshish Jangam .type = REGULATOR_VOLTAGE,\ 40208bf1c0aSAshish Jangam .id = _id,\ 40308bf1c0aSAshish Jangam .owner = THIS_MODULE,\ 40408bf1c0aSAshish Jangam },\ 40508bf1c0aSAshish Jangam .min_uV = (min) * 1000,\ 40608bf1c0aSAshish Jangam .max_uV = (max) * 1000,\ 40708bf1c0aSAshish Jangam .step_uV = (step) * 1000,\ 40808bf1c0aSAshish Jangam .volt_shift = (sbits),\ 40908bf1c0aSAshish Jangam .en_bit = (ebits),\ 41008bf1c0aSAshish Jangam .activate_bit = (abits),\ 41108bf1c0aSAshish Jangam } 41208bf1c0aSAshish Jangam 41308bf1c0aSAshish Jangam #define DA9052_LDO(_id, step, min, max, sbits, ebits, abits) \ 41408bf1c0aSAshish Jangam {\ 41508bf1c0aSAshish Jangam .reg_desc = {\ 41608bf1c0aSAshish Jangam .name = "LDO" #_id,\ 41708bf1c0aSAshish Jangam .ops = &da9052_ldo_ops,\ 41808bf1c0aSAshish Jangam .type = REGULATOR_VOLTAGE,\ 41908bf1c0aSAshish Jangam .id = _id,\ 42008bf1c0aSAshish Jangam .owner = THIS_MODULE,\ 42108bf1c0aSAshish Jangam },\ 42208bf1c0aSAshish Jangam .min_uV = (min) * 1000,\ 42308bf1c0aSAshish Jangam .max_uV = (max) * 1000,\ 42408bf1c0aSAshish Jangam .step_uV = (step) * 1000,\ 42508bf1c0aSAshish Jangam .volt_shift = (sbits),\ 42608bf1c0aSAshish Jangam .en_bit = (ebits),\ 42708bf1c0aSAshish Jangam .activate_bit = (abits),\ 42808bf1c0aSAshish Jangam } 42908bf1c0aSAshish Jangam 43008bf1c0aSAshish Jangam #define DA9052_DCDC(_id, step, min, max, sbits, ebits, abits) \ 43108bf1c0aSAshish Jangam {\ 43208bf1c0aSAshish Jangam .reg_desc = {\ 43308bf1c0aSAshish Jangam .name = "BUCK" #_id,\ 43408bf1c0aSAshish Jangam .ops = &da9052_dcdc_ops,\ 43508bf1c0aSAshish Jangam .type = REGULATOR_VOLTAGE,\ 43608bf1c0aSAshish Jangam .id = _id,\ 43708bf1c0aSAshish Jangam .owner = THIS_MODULE,\ 43808bf1c0aSAshish Jangam },\ 43908bf1c0aSAshish Jangam .min_uV = (min) * 1000,\ 44008bf1c0aSAshish Jangam .max_uV = (max) * 1000,\ 44108bf1c0aSAshish Jangam .step_uV = (step) * 1000,\ 44208bf1c0aSAshish Jangam .volt_shift = (sbits),\ 44308bf1c0aSAshish Jangam .en_bit = (ebits),\ 44408bf1c0aSAshish Jangam .activate_bit = (abits),\ 44508bf1c0aSAshish Jangam } 44608bf1c0aSAshish Jangam 44708bf1c0aSAshish Jangam #define DA9052_BUCKPERI(_id, step, min, max, sbits, ebits, abits) \ 44808bf1c0aSAshish Jangam {\ 44908bf1c0aSAshish Jangam .reg_desc = {\ 45008bf1c0aSAshish Jangam .name = "BUCK" #_id,\ 45108bf1c0aSAshish Jangam .ops = &da9052_buckperi_ops,\ 45208bf1c0aSAshish Jangam .type = REGULATOR_VOLTAGE,\ 45308bf1c0aSAshish Jangam .id = _id,\ 45408bf1c0aSAshish Jangam .owner = THIS_MODULE,\ 45508bf1c0aSAshish Jangam },\ 45608bf1c0aSAshish Jangam .min_uV = (min) * 1000,\ 45708bf1c0aSAshish Jangam .max_uV = (max) * 1000,\ 45808bf1c0aSAshish Jangam .step_uV = (step) * 1000,\ 45908bf1c0aSAshish Jangam .volt_shift = (sbits),\ 46008bf1c0aSAshish Jangam .en_bit = (ebits),\ 46108bf1c0aSAshish Jangam .activate_bit = (abits),\ 46208bf1c0aSAshish Jangam } 46308bf1c0aSAshish Jangam 46408bf1c0aSAshish Jangam struct da9052_regulator_info da9052_regulator_info[] = { 46508bf1c0aSAshish Jangam /* Buck1 - 4 */ 46608bf1c0aSAshish Jangam DA9052_DCDC(0, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO), 46708bf1c0aSAshish Jangam DA9052_DCDC(1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO), 46808bf1c0aSAshish Jangam DA9052_DCDC(2, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO), 46908bf1c0aSAshish Jangam DA9052_BUCKPERI(3, 50, 1800, 3600, 5, 6, 0), 47008bf1c0aSAshish Jangam /* LD01 - LDO10 */ 47108bf1c0aSAshish Jangam DA9052_LDO(4, 50, 600, 1800, 5, 6, 0), 47208bf1c0aSAshish Jangam DA9052_LDO5_6(5, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO), 47308bf1c0aSAshish Jangam DA9052_LDO5_6(6, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO), 47408bf1c0aSAshish Jangam DA9052_LDO(7, 25, 1725, 3300, 6, 6, 0), 47508bf1c0aSAshish Jangam DA9052_LDO(8, 50, 1200, 3600, 6, 6, 0), 47608bf1c0aSAshish Jangam DA9052_LDO(9, 50, 1200, 3600, 6, 6, 0), 47708bf1c0aSAshish Jangam DA9052_LDO(10, 50, 1200, 3600, 6, 6, 0), 47808bf1c0aSAshish Jangam DA9052_LDO(11, 50, 1200, 3600, 6, 6, 0), 47908bf1c0aSAshish Jangam DA9052_LDO(12, 50, 1250, 3650, 6, 6, 0), 48008bf1c0aSAshish Jangam DA9052_LDO(13, 50, 1200, 3600, 6, 6, 0), 48108bf1c0aSAshish Jangam }; 48208bf1c0aSAshish Jangam 48308bf1c0aSAshish Jangam struct da9052_regulator_info da9053_regulator_info[] = { 48408bf1c0aSAshish Jangam /* Buck1 - 4 */ 48508bf1c0aSAshish Jangam DA9052_DCDC(0, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO), 48608bf1c0aSAshish Jangam DA9052_DCDC(1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO), 48708bf1c0aSAshish Jangam DA9052_DCDC(2, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO), 48808bf1c0aSAshish Jangam DA9052_BUCKPERI(3, 25, 925, 2500, 6, 6, 0), 48908bf1c0aSAshish Jangam /* LD01 - LDO10 */ 49008bf1c0aSAshish Jangam DA9052_LDO(4, 50, 600, 1800, 5, 6, 0), 49108bf1c0aSAshish Jangam DA9052_LDO5_6(5, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO), 49208bf1c0aSAshish Jangam DA9052_LDO5_6(6, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO), 49308bf1c0aSAshish Jangam DA9052_LDO(7, 25, 1725, 3300, 6, 6, 0), 49408bf1c0aSAshish Jangam DA9052_LDO(8, 50, 1200, 3600, 6, 6, 0), 49508bf1c0aSAshish Jangam DA9052_LDO(9, 50, 1200, 3600, 6, 6, 0), 49608bf1c0aSAshish Jangam DA9052_LDO(10, 50, 1200, 3600, 6, 6, 0), 49708bf1c0aSAshish Jangam DA9052_LDO(11, 50, 1200, 3600, 6, 6, 0), 49808bf1c0aSAshish Jangam DA9052_LDO(12, 50, 1250, 3650, 6, 6, 0), 49908bf1c0aSAshish Jangam DA9052_LDO(13, 50, 1200, 3600, 6, 6, 0), 50008bf1c0aSAshish Jangam }; 50108bf1c0aSAshish Jangam 50208bf1c0aSAshish Jangam static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id, 50308bf1c0aSAshish Jangam int id) 50408bf1c0aSAshish Jangam { 50508bf1c0aSAshish Jangam struct da9052_regulator_info *info; 50608bf1c0aSAshish Jangam int i; 50708bf1c0aSAshish Jangam 50808bf1c0aSAshish Jangam if (chip_id == DA9052) { 50908bf1c0aSAshish Jangam for (i = 0; i < ARRAY_SIZE(da9052_regulator_info); i++) { 51008bf1c0aSAshish Jangam info = &da9052_regulator_info[i]; 51108bf1c0aSAshish Jangam if (info->reg_desc.id == id) 51208bf1c0aSAshish Jangam return info; 51308bf1c0aSAshish Jangam } 51408bf1c0aSAshish Jangam } else { 51508bf1c0aSAshish Jangam for (i = 0; i < ARRAY_SIZE(da9053_regulator_info); i++) { 51608bf1c0aSAshish Jangam info = &da9053_regulator_info[i]; 51708bf1c0aSAshish Jangam if (info->reg_desc.id == id) 51808bf1c0aSAshish Jangam return info; 51908bf1c0aSAshish Jangam } 52008bf1c0aSAshish Jangam } 52108bf1c0aSAshish Jangam 52208bf1c0aSAshish Jangam return NULL; 52308bf1c0aSAshish Jangam } 52408bf1c0aSAshish Jangam 52508bf1c0aSAshish Jangam static int __devinit da9052_regulator_probe(struct platform_device *pdev) 52608bf1c0aSAshish Jangam { 52708bf1c0aSAshish Jangam struct da9052_regulator *regulator; 52808bf1c0aSAshish Jangam struct da9052 *da9052; 52908bf1c0aSAshish Jangam struct da9052_pdata *pdata; 53008bf1c0aSAshish Jangam int ret; 53108bf1c0aSAshish Jangam 53208bf1c0aSAshish Jangam regulator = kzalloc(sizeof(struct da9052_regulator), GFP_KERNEL); 53308bf1c0aSAshish Jangam if (!regulator) 53408bf1c0aSAshish Jangam return -ENOMEM; 53508bf1c0aSAshish Jangam 53608bf1c0aSAshish Jangam da9052 = dev_get_drvdata(pdev->dev.parent); 53708bf1c0aSAshish Jangam pdata = da9052->dev->platform_data; 53808bf1c0aSAshish Jangam regulator->da9052 = da9052; 53908bf1c0aSAshish Jangam 54008bf1c0aSAshish Jangam regulator->info = find_regulator_info(regulator->da9052->chip_id, 54108bf1c0aSAshish Jangam pdev->id); 54208bf1c0aSAshish Jangam if (regulator->info == NULL) { 54308bf1c0aSAshish Jangam dev_err(&pdev->dev, "invalid regulator ID specified\n"); 54408bf1c0aSAshish Jangam ret = -EINVAL; 54508bf1c0aSAshish Jangam goto err; 54608bf1c0aSAshish Jangam } 54708bf1c0aSAshish Jangam regulator->rdev = regulator_register(®ulator->info->reg_desc, 54808bf1c0aSAshish Jangam &pdev->dev, 54908bf1c0aSAshish Jangam pdata->regulators[pdev->id], 550*47aed92cSMark Brown regulator, NULL); 55108bf1c0aSAshish Jangam if (IS_ERR(regulator->rdev)) { 55208bf1c0aSAshish Jangam dev_err(&pdev->dev, "failed to register regulator %s\n", 55308bf1c0aSAshish Jangam regulator->info->reg_desc.name); 55408bf1c0aSAshish Jangam ret = PTR_ERR(regulator->rdev); 55508bf1c0aSAshish Jangam goto err; 55608bf1c0aSAshish Jangam } 55708bf1c0aSAshish Jangam 55808bf1c0aSAshish Jangam platform_set_drvdata(pdev, regulator); 55908bf1c0aSAshish Jangam 56008bf1c0aSAshish Jangam return 0; 56108bf1c0aSAshish Jangam err: 56208bf1c0aSAshish Jangam kfree(regulator); 56308bf1c0aSAshish Jangam return ret; 56408bf1c0aSAshish Jangam } 56508bf1c0aSAshish Jangam 56608bf1c0aSAshish Jangam static int __devexit da9052_regulator_remove(struct platform_device *pdev) 56708bf1c0aSAshish Jangam { 56808bf1c0aSAshish Jangam struct da9052_regulator *regulator = platform_get_drvdata(pdev); 56908bf1c0aSAshish Jangam 57008bf1c0aSAshish Jangam regulator_unregister(regulator->rdev); 57108bf1c0aSAshish Jangam kfree(regulator); 57208bf1c0aSAshish Jangam 57308bf1c0aSAshish Jangam return 0; 57408bf1c0aSAshish Jangam } 57508bf1c0aSAshish Jangam 57608bf1c0aSAshish Jangam static struct platform_driver da9052_regulator_driver = { 57708bf1c0aSAshish Jangam .probe = da9052_regulator_probe, 57808bf1c0aSAshish Jangam .remove = __devexit_p(da9052_regulator_remove), 57908bf1c0aSAshish Jangam .driver = { 58008bf1c0aSAshish Jangam .name = "da9052-regulator", 58108bf1c0aSAshish Jangam .owner = THIS_MODULE, 58208bf1c0aSAshish Jangam }, 58308bf1c0aSAshish Jangam }; 58408bf1c0aSAshish Jangam 58508bf1c0aSAshish Jangam static int __init da9052_regulator_init(void) 58608bf1c0aSAshish Jangam { 58708bf1c0aSAshish Jangam return platform_driver_register(&da9052_regulator_driver); 58808bf1c0aSAshish Jangam } 58908bf1c0aSAshish Jangam subsys_initcall(da9052_regulator_init); 59008bf1c0aSAshish Jangam 59108bf1c0aSAshish Jangam static void __exit da9052_regulator_exit(void) 59208bf1c0aSAshish Jangam { 59308bf1c0aSAshish Jangam platform_driver_unregister(&da9052_regulator_driver); 59408bf1c0aSAshish Jangam } 59508bf1c0aSAshish Jangam module_exit(da9052_regulator_exit); 59608bf1c0aSAshish Jangam 59708bf1c0aSAshish Jangam MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); 59808bf1c0aSAshish Jangam MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9052 PMIC"); 59908bf1c0aSAshish Jangam MODULE_LICENSE("GPL"); 60008bf1c0aSAshish Jangam MODULE_ALIAS("platform:da9052-regulator"); 601