123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
- * Tero Kristo <t-kristo@ti.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <i2c.h>
- #include <dm/device_compat.h>
- #include <power/regulator.h>
- #define TPS62360_REG_SET0 0
- #define TPS62360_I2C_CHIP 0x60
- #define TPS62360_VSEL_STEPSIZE 10000 /* In uV */
- struct tps62360_regulator_config {
- u32 vmin;
- u32 vmax;
- };
- struct tps62360_regulator_pdata {
- u8 vsel_offset;
- struct udevice *i2c;
- struct tps62360_regulator_config *config;
- };
- /*
- * TPS62362/TPS62363 are just re-using these values for now, their preset
- * voltage values are just different compared to TPS62360/TPS62361.
- */
- static struct tps62360_regulator_config tps62360_data = {
- .vmin = 770000,
- .vmax = 1400000,
- };
- static struct tps62360_regulator_config tps62361_data = {
- .vmin = 500000,
- .vmax = 1770000,
- };
- static int tps62360_regulator_set_value(struct udevice *dev, int uV)
- {
- struct tps62360_regulator_pdata *pdata = dev_get_plat(dev);
- u8 regval;
- if (uV < pdata->config->vmin || uV > pdata->config->vmax)
- return -EINVAL;
- uV -= pdata->config->vmin;
- uV = DIV_ROUND_UP(uV, TPS62360_VSEL_STEPSIZE);
- if (uV > U8_MAX)
- return -EINVAL;
- regval = (u8)uV;
- return dm_i2c_write(pdata->i2c, TPS62360_REG_SET0 + pdata->vsel_offset,
- ®val, 1);
- }
- static int tps62360_regulator_get_value(struct udevice *dev)
- {
- u8 regval;
- int ret;
- struct tps62360_regulator_pdata *pdata = dev_get_plat(dev);
- ret = dm_i2c_read(pdata->i2c, TPS62360_REG_SET0 + pdata->vsel_offset,
- ®val, 1);
- if (ret) {
- dev_err(dev, "i2c read failed: %d\n", ret);
- return ret;
- }
- return (u32)regval * TPS62360_VSEL_STEPSIZE + pdata->config->vmin;
- }
- static int tps62360_regulator_probe(struct udevice *dev)
- {
- struct tps62360_regulator_pdata *pdata = dev_get_plat(dev);
- u8 vsel0;
- u8 vsel1;
- int ret;
- pdata->config = (void *)dev_get_driver_data(dev);
- vsel0 = dev_read_bool(dev, "ti,vsel0-state-high");
- vsel1 = dev_read_bool(dev, "ti,vsel1-state-high");
- pdata->vsel_offset = vsel0 + vsel1 * 2;
- ret = i2c_get_chip(dev->parent, TPS62360_I2C_CHIP, 1, &pdata->i2c);
- if (ret) {
- dev_err(dev, "i2c dev get failed.\n");
- return ret;
- }
- return 0;
- }
- static const struct dm_regulator_ops tps62360_regulator_ops = {
- .get_value = tps62360_regulator_get_value,
- .set_value = tps62360_regulator_set_value,
- };
- static const struct udevice_id tps62360_regulator_ids[] = {
- { .compatible = "ti,tps62360", .data = (ulong)&tps62360_data },
- { .compatible = "ti,tps62361", .data = (ulong)&tps62361_data },
- { .compatible = "ti,tps62362", .data = (ulong)&tps62360_data },
- { .compatible = "ti,tps62363", .data = (ulong)&tps62361_data },
- { },
- };
- U_BOOT_DRIVER(tps62360_regulator) = {
- .name = "tps62360_regulator",
- .id = UCLASS_REGULATOR,
- .ops = &tps62360_regulator_ops,
- .of_match = tps62360_regulator_ids,
- .plat_auto = sizeof(struct tps62360_regulator_pdata),
- .probe = tps62360_regulator_probe,
- };
|