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https://github.com/AsahiLinux/u-boot
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96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
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*/
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#include <common.h>
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#include <dm.h>
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#include <i2c.h>
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#include <log.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/tps65910_pmic.h>
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER },
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{ .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER },
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{ .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER },
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{ },
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};
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static int pmic_tps65910_reg_count(struct udevice *dev)
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{
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return TPS65910_NUM_REGS;
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}
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static int pmic_tps65910_write(struct udevice *dev, uint reg, const u8 *buffer,
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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, buffer, len);
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if (ret)
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pr_err("%s write error on register %02x\n", dev->name, reg);
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return ret;
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}
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static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer,
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int len)
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{
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int ret;
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ret = dm_i2c_read(dev, reg, buffer, len);
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if (ret)
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pr_err("%s read error on register %02x\n", dev->name, reg);
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return ret;
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}
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static int pmic_tps65910_bind(struct udevice *dev)
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{
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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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debug("%s regulators subnode not found\n", dev->name);
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return -EINVAL;
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}
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children = pmic_bind_children(dev, regulators_node, pmic_children_info);
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if (!children)
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debug("%s has no children (regulators)\n", dev->name);
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return 0;
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}
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static int pmic_tps65910_probe(struct udevice *dev)
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{
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/* use I2C control interface instead of I2C smartreflex interface to
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* access smartrefelex registers VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG
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* and VDD2_SR_REG
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*/
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return pmic_clrsetbits(dev, TPS65910_REG_DEVICE_CTRL, 0,
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TPS65910_I2C_SEL_MASK);
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}
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static struct dm_pmic_ops pmic_tps65910_ops = {
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.reg_count = pmic_tps65910_reg_count,
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.read = pmic_tps65910_read,
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.write = pmic_tps65910_write,
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};
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static const struct udevice_id pmic_tps65910_match[] = {
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{ .compatible = "ti,tps65910" },
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{ /* sentinel */ }
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};
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U_BOOT_DRIVER(pmic_tps65910) = {
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.name = "pmic_tps65910",
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.id = UCLASS_PMIC,
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.of_match = pmic_tps65910_match,
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.bind = pmic_tps65910_bind,
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.probe = pmic_tps65910_probe,
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.ops = &pmic_tps65910_ops,
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};
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