1*1a5a05daSJaehoon Chung /* 2*1a5a05daSJaehoon Chung * Copyright (C) 2016 Samsung Electronics 3*1a5a05daSJaehoon Chung * Jaehoon Chung <jh80.chung@samsung.com> 4*1a5a05daSJaehoon Chung * 5*1a5a05daSJaehoon Chung * SPDX-License-Identifier: GPL-2.0+ 6*1a5a05daSJaehoon Chung */ 7*1a5a05daSJaehoon Chung 8*1a5a05daSJaehoon Chung #include <common.h> 9*1a5a05daSJaehoon Chung #include <dm.h> 10*1a5a05daSJaehoon Chung #include <i2c.h> 11*1a5a05daSJaehoon Chung #include <power/pmic.h> 12*1a5a05daSJaehoon Chung #include <power/max8997_pmic.h> 13*1a5a05daSJaehoon Chung #include <errno.h> 14*1a5a05daSJaehoon Chung 15*1a5a05daSJaehoon Chung DECLARE_GLOBAL_DATA_PTR; 16*1a5a05daSJaehoon Chung 17*1a5a05daSJaehoon Chung static int max8997_reg_count(struct udevice *dev) 18*1a5a05daSJaehoon Chung { 19*1a5a05daSJaehoon Chung return PMIC_NUM_OF_REGS; 20*1a5a05daSJaehoon Chung } 21*1a5a05daSJaehoon Chung 22*1a5a05daSJaehoon Chung static int max8997_write(struct udevice *dev, uint reg, const uint8_t *buff, 23*1a5a05daSJaehoon Chung int len) 24*1a5a05daSJaehoon Chung { 25*1a5a05daSJaehoon Chung int ret; 26*1a5a05daSJaehoon Chung 27*1a5a05daSJaehoon Chung ret = dm_i2c_write(dev, reg, buff, len); 28*1a5a05daSJaehoon Chung if (ret) 29*1a5a05daSJaehoon Chung error("write error to device: %p register: %#x!", dev, reg); 30*1a5a05daSJaehoon Chung 31*1a5a05daSJaehoon Chung return ret; 32*1a5a05daSJaehoon Chung } 33*1a5a05daSJaehoon Chung 34*1a5a05daSJaehoon Chung static int max8997_read(struct udevice *dev, uint reg, uint8_t *buff, int len) 35*1a5a05daSJaehoon Chung { 36*1a5a05daSJaehoon Chung int ret; 37*1a5a05daSJaehoon Chung 38*1a5a05daSJaehoon Chung ret = dm_i2c_read(dev, reg, buff, len); 39*1a5a05daSJaehoon Chung if (ret) 40*1a5a05daSJaehoon Chung error("read error from device: %p register: %#x!", dev, reg); 41*1a5a05daSJaehoon Chung 42*1a5a05daSJaehoon Chung return ret; 43*1a5a05daSJaehoon Chung } 44*1a5a05daSJaehoon Chung 45*1a5a05daSJaehoon Chung static struct dm_pmic_ops max8997_ops = { 46*1a5a05daSJaehoon Chung .reg_count = max8997_reg_count, 47*1a5a05daSJaehoon Chung .read = max8997_read, 48*1a5a05daSJaehoon Chung .write = max8997_write, 49*1a5a05daSJaehoon Chung }; 50*1a5a05daSJaehoon Chung 51*1a5a05daSJaehoon Chung static const struct udevice_id max8997_ids[] = { 52*1a5a05daSJaehoon Chung { .compatible = "maxim,max8997" }, 53*1a5a05daSJaehoon Chung { }, 54*1a5a05daSJaehoon Chung }; 55*1a5a05daSJaehoon Chung 56*1a5a05daSJaehoon Chung U_BOOT_DRIVER(pmic_max8997) = { 57*1a5a05daSJaehoon Chung .name = "max8997_pmic", 58*1a5a05daSJaehoon Chung .id = UCLASS_PMIC, 59*1a5a05daSJaehoon Chung .of_match = max8997_ids, 60*1a5a05daSJaehoon Chung .ops = &max8997_ops, 61*1a5a05daSJaehoon Chung }; 62