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