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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2017 * Texas Instruments Incorporated, <www.ti.com> * * Keerthy <j-keerthy@ti.com> */ #include <fdtdec.h> #include <errno.h> #include <dm.h> #include <log.h> #include <power/pmic.h> #include <power/regulator.h> #include <power/lp87565.h> static const char lp87565_buck_ctrl1[LP87565_BUCK_NUM] = {0x2, 0x4, 0x6, 0x8, 0x2, 0x6}; static const char lp87565_buck_vout[LP87565_BUCK_NUM] = {0xA, 0xC, 0xE, 0x10, 0xA, 0xE }; static int lp87565_buck_enable(struct udevice *dev, int op, bool *enable) { int ret; unsigned int adr; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); adr = uc_pdata->ctrl_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= LP87565_BUCK_MODE_MASK; if (ret) *enable = true; else *enable = false; return 0; } else if (op == PMIC_OP_SET) { if (*enable) ret |= LP87565_BUCK_MODE_MASK; else ret &= ~LP87565_BUCK_MODE_MASK; ret = pmic_reg_write(dev->parent, adr, ret); if (ret) return ret; } return 0; } static int lp87565_buck_volt2val(int uV) { if (uV > LP87565_BUCK_VOLT_MAX) return -EINVAL; else if (uV > 1400000) return (uV - 1420000) / 20000 + 0x9E; else if (uV > 730000) return (uV - 735000) / 5000 + 0x18; else if (uV >= 500000) return (uV - 500000) / 10000; else return -EINVAL; } static int lp87565_buck_val2volt(int val) { if (val > LP87565_BUCK_VOLT_MAX_HEX) return -EINVAL; else if (val > 0x9D) return 1400000 + (val - 0x9D) * 20000; else if (val > 0x17) return 730000 + (val - 0x17) * 5000; else if (val >= 0x0) return 500000 + val * 10000; else return -EINVAL; } static int lp87565_buck_val(struct udevice *dev, int op, int *uV) { unsigned int adr; int hex, ret; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); if (op == PMIC_OP_GET) *uV = 0; adr = uc_pdata->volt_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= LP87565_BUCK_VOLT_MASK; ret = lp87565_buck_val2volt(ret); if (ret < 0) return ret; *uV = ret; return 0; } hex = lp87565_buck_volt2val(*uV); if (hex < 0) return hex; ret &= 0x0; ret = hex; ret = pmic_reg_write(dev->parent, adr, ret); return ret; } static int lp87565_buck_probe(struct udevice *dev) { struct dm_regulator_uclass_plat *uc_pdata; int idx; uc_pdata = dev_get_uclass_plat(dev); uc_pdata->type = REGULATOR_TYPE_BUCK; idx = dev->driver_data; if (idx == 0 || idx == 1 || idx == 2 || idx == 3) { debug("Single phase regulator\n"); } else if (idx == 23) { idx = 5; } else if (idx == 10) { idx = 4; } else { printf("Wrong ID for regulator\n"); return -EINVAL; } uc_pdata->ctrl_reg = lp87565_buck_ctrl1[idx]; uc_pdata->volt_reg = lp87565_buck_vout[idx]; return 0; } static int buck_get_value(struct udevice *dev) { int uV; int ret; ret = lp87565_buck_val(dev, PMIC_OP_GET, &uV); if (ret) return ret; return uV; } static int buck_set_value(struct udevice *dev, int uV) { return lp87565_buck_val(dev, PMIC_OP_SET, &uV); } static int buck_get_enable(struct udevice *dev) { bool enable = false; int ret; ret = lp87565_buck_enable(dev, PMIC_OP_GET, &enable); if (ret) return ret; return enable; } static int buck_set_enable(struct udevice *dev, bool enable) { return lp87565_buck_enable(dev, PMIC_OP_SET, &enable); } static const struct dm_regulator_ops lp87565_buck_ops = { .get_value = buck_get_value, .set_value = buck_set_value, .get_enable = buck_get_enable, .set_enable = buck_set_enable, }; U_BOOT_DRIVER(lp87565_buck) = { .name = LP87565_BUCK_DRIVER, .id = UCLASS_REGULATOR, .ops = &lp87565_buck_ops, .probe = lp87565_buck_probe, }; |