1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2017 Texas Instruments Incorporated, <www.ti.com> 4 * Keerthy <j-keerthy (at) ti.com> 5 */ 6 7 #include <common.h> 8 #include <fdtdec.h> 9 #include <errno.h> 10 #include <dm.h> 11 #include <i2c.h> 12 #include <power/pmic.h> 13 #include <power/regulator.h> 14 #include <power/lp87565.h> 15 #include <dm/device.h> 16 17 static const struct pmic_child_info pmic_children_info[] = { 18 { .prefix = "buck", .driver = LP87565_BUCK_DRIVER }, 19 { }, 20 }; 21 22 static int lp87565_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 pr_err("write error to device: %p register: %#x!", dev, reg); 30 31 return ret; 32 } 33 34 static int lp87565_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 pr_err("read error from device: %p register: %#x!", dev, reg); 41 42 return ret; 43 } 44 45 static int lp87565_bind(struct udevice *dev) 46 { 47 ofnode regulators_node; 48 int children; 49 50 regulators_node = dev_read_subnode(dev, "regulators"); 51 if (!ofnode_valid(regulators_node)) { 52 debug("%s: %s regulators subnode not found!", __func__, 53 dev->name); 54 return -ENXIO; 55 } 56 57 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); 58 59 children = pmic_bind_children(dev, regulators_node, pmic_children_info); 60 if (!children) 61 printf("%s: %s - no child found\n", __func__, dev->name); 62 63 /* Always return success for this device */ 64 return 0; 65 } 66 67 static struct dm_pmic_ops lp87565_ops = { 68 .read = lp87565_read, 69 .write = lp87565_write, 70 }; 71 72 static const struct udevice_id lp87565_ids[] = { 73 { .compatible = "ti,lp87565", .data = LP87565 }, 74 { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 }, 75 { } 76 }; 77 78 U_BOOT_DRIVER(pmic_lp87565) = { 79 .name = "lp87565_pmic", 80 .id = UCLASS_PMIC, 81 .of_match = lp87565_ids, 82 .bind = lp87565_bind, 83 .ops = &lp87565_ops, 84 }; 85
