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 static int max8997_reg_count(struct udevice *dev) 16 { 17 return PMIC_NUM_OF_REGS; 18 } 19 20 static int max8997_write(struct udevice *dev, uint reg, const uint8_t *buff, 21 int len) 22 { 23 int ret; 24 25 ret = dm_i2c_write(dev, reg, buff, len); 26 if (ret) 27 pr_err("write error to device: %p register: %#x!", dev, reg); 28 29 return ret; 30 } 31 32 static int max8997_read(struct udevice *dev, uint reg, uint8_t *buff, int len) 33 { 34 int ret; 35 36 ret = dm_i2c_read(dev, reg, buff, len); 37 if (ret) 38 pr_err("read error from device: %p register: %#x!", dev, reg); 39 40 return ret; 41 } 42 43 static struct dm_pmic_ops max8997_ops = { 44 .reg_count = max8997_reg_count, 45 .read = max8997_read, 46 .write = max8997_write, 47 }; 48 49 static const struct udevice_id max8997_ids[] = { 50 { .compatible = "maxim,max8997" }, 51 { }, 52 }; 53 54 U_BOOT_DRIVER(pmic_max8997) = { 55 .name = "max8997_pmic", 56 .id = UCLASS_PMIC, 57 .of_match = max8997_ids, 58 .ops = &max8997_ops, 59 }; 60