// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause /* * Copyright (C) 2018, STMicroelectronics - All Rights Reserved */ #include <common.h> #include <dm.h> #include <errno.h> #include <i2c.h> #include <power/pmic.h> #include <power/stpmu1.h> #define STMPU1_NUM_OF_REGS 0x100 #ifndef CONFIG_SPL_BUILD static const struct pmic_child_info stpmu1_children_info[] = { { .prefix = "ldo", .driver = "stpmu1_ldo" }, { .prefix = "buck", .driver = "stpmu1_buck" }, { .prefix = "vref_ddr", .driver = "stpmu1_vref_ddr" }, { .prefix = "pwr_sw", .driver = "stpmu1_pwr_sw" }, { .prefix = "boost", .driver = "stpmu1_boost" }, { }, }; #endif /* CONFIG_SPL_BUILD */ static int stpmu1_reg_count(struct udevice *dev) { return STMPU1_NUM_OF_REGS; } static int stpmu1_write(struct udevice *dev, uint reg, const uint8_t *buff, int len) { int ret; ret = dm_i2c_write(dev, reg, buff, len); if (ret) dev_err(dev, "%s: failed to write register %#x :%d", __func__, reg, ret); return ret; } static int stpmu1_read(struct udevice *dev, uint reg, uint8_t *buff, int len) { int ret; ret = dm_i2c_read(dev, reg, buff, len); if (ret) dev_err(dev, "%s: failed to read register %#x : %d", __func__, reg, ret); return ret; } static int stpmu1_bind(struct udevice *dev) { #ifndef CONFIG_SPL_BUILD ofnode regulators_node; int children; regulators_node = dev_read_subnode(dev, "regulators"); if (!ofnode_valid(regulators_node)) { dev_dbg(dev, "regulators subnode not found!"); return -ENXIO; } dev_dbg(dev, "found regulators subnode\n"); children = pmic_bind_children(dev, regulators_node, stpmu1_children_info); if (!children) dev_dbg(dev, "no child found\n"); #endif /* CONFIG_SPL_BUILD */ return 0; } static struct dm_pmic_ops stpmu1_ops = { .reg_count = stpmu1_reg_count, .read = stpmu1_read, .write = stpmu1_write, }; static const struct udevice_id stpmu1_ids[] = { { .compatible = "st,stpmu1" }, { } }; U_BOOT_DRIVER(pmic_stpmu1) = { .name = "stpmu1_pmic", .id = UCLASS_PMIC, .of_match = stpmu1_ids, .bind = stpmu1_bind, .ops = &stpmu1_ops, };