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