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