projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 22e8f189 TK |
1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* | |
| a94a4071 | 3 | * Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com/ |
| 22e8f189 TK |
4 | * Tero Kristo <t-kristo@ti.com> |
| 5 | */ | |
| 6 | ||
| d678a59d | 7 | #include <common.h> |
| 22e8f189 TK |
8 | #include <dm.h> |
| 9 | #include <i2c.h> | |
| 336d4615 | 10 | #include <dm/device_compat.h> |
| 22e8f189 TK |
11 | #include <power/regulator.h> |
| 12 | ||
| 13 | #define TPS62360_REG_SET0 0 | |
| 14 | ||
| 15 | #define TPS62360_I2C_CHIP 0x60 | |
| 16 | ||
| 17 | #define TPS62360_VSEL_STEPSIZE 10000 /* In uV */ | |
| 18 | ||
| 19 | struct tps62360_regulator_config { | |
| 20 | u32 vmin; | |
| 21 | u32 vmax; | |
| 22 | }; | |
| 23 | ||
| 24 | struct tps62360_regulator_pdata { | |
| 25 | u8 vsel_offset; | |
| 26 | struct udevice *i2c; | |
| 27 | struct tps62360_regulator_config *config; | |
| 28 | }; | |
| 29 | ||
| 30 | /* | |
| 31 | * TPS62362/TPS62363 are just re-using these values for now, their preset | |
| 32 | * voltage values are just different compared to TPS62360/TPS62361. | |
| 33 | */ | |
| 34 | static struct tps62360_regulator_config tps62360_data = { | |
| 35 | .vmin = 770000, | |
| 36 | .vmax = 1400000, | |
| 37 | }; | |
| 38 | ||
| 39 | static struct tps62360_regulator_config tps62361_data = { | |
| 40 | .vmin = 500000, | |
| 41 | .vmax = 1770000, | |
| 42 | }; | |
| 43 | ||
| 44 | static int tps62360_regulator_set_value(struct udevice *dev, int uV) | |
| 45 | { | |
| c69cda25 | 46 | struct tps62360_regulator_pdata *pdata = dev_get_plat(dev); |
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47 | u8 regval; |
| 48 | ||
| 49 | if (uV < pdata->config->vmin || uV > pdata->config->vmax) | |
| 50 | return -EINVAL; | |
| 51 | ||
| 52 | uV -= pdata->config->vmin; | |
| 53 | ||
| 54 | uV = DIV_ROUND_UP(uV, TPS62360_VSEL_STEPSIZE); | |
| 55 | ||
| 56 | if (uV > U8_MAX) | |
| 57 | return -EINVAL; | |
| 58 | ||
| 59 | regval = (u8)uV; | |
| 60 | ||
| 61 | return dm_i2c_write(pdata->i2c, TPS62360_REG_SET0 + pdata->vsel_offset, | |
| 62 | ®val, 1); | |
| 63 | } | |
| 64 | ||
| 65 | static int tps62360_regulator_get_value(struct udevice *dev) | |
| 66 | { | |
| 67 | u8 regval; | |
| 68 | int ret; | |
| c69cda25 | 69 | struct tps62360_regulator_pdata *pdata = dev_get_plat(dev); |
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70 | |
| 71 | ret = dm_i2c_read(pdata->i2c, TPS62360_REG_SET0 + pdata->vsel_offset, | |
| 72 | ®val, 1); | |
| 73 | if (ret) { | |
| 74 | dev_err(dev, "i2c read failed: %d\n", ret); | |
| 75 | return ret; | |
| 76 | } | |
| 77 | ||
| 78 | return (u32)regval * TPS62360_VSEL_STEPSIZE + pdata->config->vmin; | |
| 79 | } | |
| 80 | ||
| 17aaa42e | 81 | static int tps62360_regulator_probe(struct udevice *dev) |
| 22e8f189 | 82 | { |
| c69cda25 | 83 | struct tps62360_regulator_pdata *pdata = dev_get_plat(dev); |
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84 | u8 vsel0; |
| 85 | u8 vsel1; | |
| 86 | int ret; | |
| 87 | ||
| 88 | pdata->config = (void *)dev_get_driver_data(dev); | |
| 89 | ||
| 90 | vsel0 = dev_read_bool(dev, "ti,vsel0-state-high"); | |
| 91 | vsel1 = dev_read_bool(dev, "ti,vsel1-state-high"); | |
| 92 | ||
| 93 | pdata->vsel_offset = vsel0 + vsel1 * 2; | |
| 94 | ||
| 95 | ret = i2c_get_chip(dev->parent, TPS62360_I2C_CHIP, 1, &pdata->i2c); | |
| 96 | if (ret) { | |
| 97 | dev_err(dev, "i2c dev get failed.\n"); | |
| 98 | return ret; | |
| 99 | } | |
| 100 | ||
| 101 | return 0; | |
| 102 | } | |
| 103 | ||
| 104 | static const struct dm_regulator_ops tps62360_regulator_ops = { | |
| 105 | .get_value = tps62360_regulator_get_value, | |
| 106 | .set_value = tps62360_regulator_set_value, | |
| 107 | }; | |
| 108 | ||
| 109 | static const struct udevice_id tps62360_regulator_ids[] = { | |
| 110 | { .compatible = "ti,tps62360", .data = (ulong)&tps62360_data }, | |
| 111 | { .compatible = "ti,tps62361", .data = (ulong)&tps62361_data }, | |
| 112 | { .compatible = "ti,tps62362", .data = (ulong)&tps62360_data }, | |
| 113 | { .compatible = "ti,tps62363", .data = (ulong)&tps62361_data }, | |
| 114 | { }, | |
| 115 | }; | |
| 116 | ||
| 117 | U_BOOT_DRIVER(tps62360_regulator) = { | |
| 118 | .name = "tps62360_regulator", | |
| 119 | .id = UCLASS_REGULATOR, | |
| 120 | .ops = &tps62360_regulator_ops, | |
| 121 | .of_match = tps62360_regulator_ids, | |
| caa4daa2 | 122 | .plat_auto = sizeof(struct tps62360_regulator_pdata), |
| 17aaa42e | 123 | .probe = tps62360_regulator_probe, |
| 22e8f189 | 124 | }; |