^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // helpers.c -- Voltage/Current Regulator framework helper functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright 2007, 2008 Wolfson Microelectronics PLC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) // Copyright 2008 SlimLogic Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/regulator/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * regulator_is_enabled_regmap - standard is_enabled() for regmap users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Regulators that use regmap for their register I/O can set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * enable_reg and enable_mask fields in their descriptor and then use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * this as their is_enabled operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) int regulator_is_enabled_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) val &= rdev->desc->enable_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (rdev->desc->enable_is_inverted) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (rdev->desc->enable_val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return val != rdev->desc->enable_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return val == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (rdev->desc->enable_val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return val == rdev->desc->enable_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return val != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) EXPORT_SYMBOL_GPL(regulator_is_enabled_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * regulator_enable_regmap - standard enable() for regmap users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * Regulators that use regmap for their register I/O can set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * enable_reg and enable_mask fields in their descriptor and then use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * this as their enable() operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) int regulator_enable_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (rdev->desc->enable_is_inverted) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) val = rdev->desc->disable_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) val = rdev->desc->enable_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (!val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) val = rdev->desc->enable_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) rdev->desc->enable_mask, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) EXPORT_SYMBOL_GPL(regulator_enable_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * regulator_disable_regmap - standard disable() for regmap users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Regulators that use regmap for their register I/O can set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * enable_reg and enable_mask fields in their descriptor and then use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * this as their disable() operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int regulator_disable_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (rdev->desc->enable_is_inverted) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) val = rdev->desc->enable_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (!val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) val = rdev->desc->enable_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) val = rdev->desc->disable_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) rdev->desc->enable_mask, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) EXPORT_SYMBOL_GPL(regulator_disable_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static int regulator_range_selector_to_index(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) unsigned int rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (!rdev->desc->linear_range_selectors)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) rval &= rdev->desc->vsel_range_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (rdev->desc->linear_range_selectors[i] == rval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * regulator_get_voltage_sel_pickable_regmap - pickable range get_voltage_sel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * Regulators that use regmap for their register I/O and use pickable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * ranges can set the vsel_reg, vsel_mask, vsel_range_reg and vsel_range_mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * fields in their descriptor and then use this as their get_voltage_vsel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int regulator_get_voltage_sel_pickable_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) unsigned int r_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) unsigned int voltages = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) const struct linear_range *r = rdev->desc->linear_ranges;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (!r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) ret = regmap_read(rdev->regmap, rdev->desc->vsel_range_reg, &r_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) val &= rdev->desc->vsel_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) val >>= ffs(rdev->desc->vsel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) range = regulator_range_selector_to_index(rdev, r_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (range < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) voltages = linear_range_values_in_range_array(r, range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return val + voltages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) EXPORT_SYMBOL_GPL(regulator_get_voltage_sel_pickable_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * regulator_set_voltage_sel_pickable_regmap - pickable range set_voltage_sel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * @sel: Selector to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * Regulators that use regmap for their register I/O and use pickable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * ranges can set the vsel_reg, vsel_mask, vsel_range_reg and vsel_range_mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * fields in their descriptor and then use this as their set_voltage_vsel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int regulator_set_voltage_sel_pickable_regmap(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) unsigned int sel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) unsigned int range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) unsigned int voltages_in_range = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) const struct linear_range *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) r = &rdev->desc->linear_ranges[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) voltages_in_range = linear_range_values_in_range(r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (sel < voltages_in_range)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) sel -= voltages_in_range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (i == rdev->desc->n_linear_ranges)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) sel <<= ffs(rdev->desc->vsel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) sel += rdev->desc->linear_ranges[i].min_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) range = rdev->desc->linear_range_selectors[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (rdev->desc->vsel_reg == rdev->desc->vsel_range_reg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) ret = regmap_update_bits(rdev->regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) rdev->desc->vsel_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) rdev->desc->vsel_range_mask |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) rdev->desc->vsel_mask, sel | range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ret = regmap_update_bits(rdev->regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) rdev->desc->vsel_range_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) rdev->desc->vsel_range_mask, range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) ret = regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) rdev->desc->vsel_mask, sel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (rdev->desc->apply_bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) rdev->desc->apply_bit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) rdev->desc->apply_bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) EXPORT_SYMBOL_GPL(regulator_set_voltage_sel_pickable_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * regulator_get_voltage_sel_regmap - standard get_voltage_sel for regmap users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * Regulators that use regmap for their register I/O can set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * vsel_reg and vsel_mask fields in their descriptor and then use this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * as their get_voltage_vsel operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) int regulator_get_voltage_sel_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) val &= rdev->desc->vsel_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) val >>= ffs(rdev->desc->vsel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) EXPORT_SYMBOL_GPL(regulator_get_voltage_sel_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * regulator_set_voltage_sel_regmap - standard set_voltage_sel for regmap users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * @sel: Selector to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * Regulators that use regmap for their register I/O can set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * vsel_reg and vsel_mask fields in their descriptor and then use this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * as their set_voltage_vsel operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int regulator_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) sel <<= ffs(rdev->desc->vsel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) ret = regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) rdev->desc->vsel_mask, sel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (rdev->desc->apply_bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) rdev->desc->apply_bit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) rdev->desc->apply_bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) EXPORT_SYMBOL_GPL(regulator_set_voltage_sel_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * regulator_map_voltage_iterate - map_voltage() based on list_voltage()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * @rdev: Regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * @min_uV: Lower bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * @max_uV: Upper bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * Drivers implementing set_voltage_sel() and list_voltage() can use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * this as their map_voltage() operation. It will find a suitable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * voltage by calling list_voltage() until it gets something in bounds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * for the requested voltages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) int regulator_map_voltage_iterate(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) int min_uV, int max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) int best_val = INT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) int selector = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) /* Find the smallest voltage that falls within the specified
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * range.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) for (i = 0; i < rdev->desc->n_voltages; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) ret = rdev->desc->ops->list_voltage(rdev, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (ret < best_val && ret >= min_uV && ret <= max_uV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) best_val = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) selector = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (best_val != INT_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) return selector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) EXPORT_SYMBOL_GPL(regulator_map_voltage_iterate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * regulator_map_voltage_ascend - map_voltage() for ascendant voltage list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * @rdev: Regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * @min_uV: Lower bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * @max_uV: Upper bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * Drivers that have ascendant voltage list can use this as their
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) * map_voltage() operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) int regulator_map_voltage_ascend(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) int min_uV, int max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) for (i = 0; i < rdev->desc->n_voltages; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) ret = rdev->desc->ops->list_voltage(rdev, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (ret > max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if (ret >= min_uV && ret <= max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) EXPORT_SYMBOL_GPL(regulator_map_voltage_ascend);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * regulator_map_voltage_linear - map_voltage() for simple linear mappings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) * @rdev: Regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * @min_uV: Lower bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * @max_uV: Upper bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * Drivers providing min_uV and uV_step in their regulator_desc can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * use this as their map_voltage() operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) int regulator_map_voltage_linear(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int min_uV, int max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int ret, voltage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) /* Allow uV_step to be 0 for fixed voltage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (rdev->desc->n_voltages == 1 && rdev->desc->uV_step == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (min_uV <= rdev->desc->min_uV && rdev->desc->min_uV <= max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (!rdev->desc->uV_step) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) BUG_ON(!rdev->desc->uV_step);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (min_uV < rdev->desc->min_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) min_uV = rdev->desc->min_uV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) ret = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) ret += rdev->desc->linear_min_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) /* Map back into a voltage to verify we're still in bounds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) voltage = rdev->desc->ops->list_voltage(rdev, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (voltage < min_uV || voltage > max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) EXPORT_SYMBOL_GPL(regulator_map_voltage_linear);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * regulator_map_voltage_linear_range - map_voltage() for multiple linear ranges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * @rdev: Regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * @min_uV: Lower bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * @max_uV: Upper bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * Drivers providing linear_ranges in their descriptor can use this as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * their map_voltage() callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) int regulator_map_voltage_linear_range(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) int min_uV, int max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) const struct linear_range *range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) unsigned int sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) bool found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) int voltage, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (!rdev->desc->n_linear_ranges) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) BUG_ON(!rdev->desc->n_linear_ranges);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) range = &rdev->desc->linear_ranges[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) ret = linear_range_get_selector_high(range, min_uV, &sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) &found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) ret = sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) * Map back into a voltage to verify we're still in bounds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) * If we are not, then continue checking rest of the ranges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) voltage = rdev->desc->ops->list_voltage(rdev, sel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (voltage >= min_uV && voltage <= max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (i == rdev->desc->n_linear_ranges)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) * regulator_map_voltage_pickable_linear_range - map_voltage, pickable ranges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) * @rdev: Regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * @min_uV: Lower bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * @max_uV: Upper bound for voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) * Drivers providing pickable linear_ranges in their descriptor can use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * this as their map_voltage() callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) int regulator_map_voltage_pickable_linear_range(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) int min_uV, int max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) const struct linear_range *range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) int voltage, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) unsigned int selector = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (!rdev->desc->n_linear_ranges) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) BUG_ON(!rdev->desc->n_linear_ranges);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) int linear_max_uV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) bool found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) unsigned int sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) range = &rdev->desc->linear_ranges[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) linear_max_uV = linear_range_get_max_value(range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (!(min_uV <= linear_max_uV && max_uV >= range->min)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) selector += linear_range_values_in_range(range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) ret = linear_range_get_selector_high(range, min_uV, &sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) &found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) selector += linear_range_values_in_range(range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ret = selector + sel - range->min_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) voltage = rdev->desc->ops->list_voltage(rdev, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * Map back into a voltage to verify we're still in bounds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * We may have overlapping voltage ranges. Hence we don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * exit but retry until we have checked all ranges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (voltage < min_uV || voltage > max_uV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) selector += linear_range_values_in_range(range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (i == rdev->desc->n_linear_ranges)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) EXPORT_SYMBOL_GPL(regulator_map_voltage_pickable_linear_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) * regulator_list_voltage_linear - List voltages with simple calculation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) * @rdev: Regulator device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) * @selector: Selector to convert into a voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * Regulators with a simple linear mapping between voltages and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * selectors can set min_uV and uV_step in the regulator descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * and then use this function as their list_voltage() operation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) int regulator_list_voltage_linear(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) unsigned int selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (selector >= rdev->desc->n_voltages)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (selector < rdev->desc->linear_min_sel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) selector -= rdev->desc->linear_min_sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) return rdev->desc->min_uV + (rdev->desc->uV_step * selector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) EXPORT_SYMBOL_GPL(regulator_list_voltage_linear);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * regulator_list_voltage_pickable_linear_range - pickable range list voltages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * @rdev: Regulator device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) * @selector: Selector to convert into a voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) * list_voltage() operation, intended to be used by drivers utilizing pickable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * ranges helpers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) int regulator_list_voltage_pickable_linear_range(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) unsigned int selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) const struct linear_range *range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) unsigned int all_sels = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (!rdev->desc->n_linear_ranges) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) BUG_ON(!rdev->desc->n_linear_ranges);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) unsigned int sel_indexes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) range = &rdev->desc->linear_ranges[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) sel_indexes = linear_range_values_in_range(range) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) if (all_sels + sel_indexes >= selector) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) selector -= all_sels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) * As we see here, pickable ranges work only as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * long as the first selector for each pickable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) * range is 0, and the each subsequent range for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * this 'pick' follow immediately at next unused
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) * selector (Eg. there is no gaps between ranges).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * I think this is fine but it probably should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) * documented. OTOH, whole pickable range stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) * might benefit from some documentation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) return range->min + (range->step * selector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) all_sels += (sel_indexes + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) EXPORT_SYMBOL_GPL(regulator_list_voltage_pickable_linear_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) * regulator_desc_list_voltage_linear_range - List voltages for linear ranges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) * @desc: Regulator desc for regulator which volatges are to be listed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * @selector: Selector to convert into a voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * Regulators with a series of simple linear mappings between voltages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) * and selectors who have set linear_ranges in the regulator descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) * can use this function prior regulator registration to list voltages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) * This is useful when voltages need to be listed during device-tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) * parsing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) int regulator_desc_list_voltage_linear_range(const struct regulator_desc *desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) unsigned int selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) BUG_ON(!desc->n_linear_ranges);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) ret = linear_range_get_value_array(desc->linear_ranges,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) desc->n_linear_ranges, selector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) EXPORT_SYMBOL_GPL(regulator_desc_list_voltage_linear_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * regulator_list_voltage_linear_range - List voltages for linear ranges
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * @rdev: Regulator device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * @selector: Selector to convert into a voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * Regulators with a series of simple linear mappings between voltages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * and selectors can set linear_ranges in the regulator descriptor and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * then use this function as their list_voltage() operation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) int regulator_list_voltage_linear_range(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) unsigned int selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) return regulator_desc_list_voltage_linear_range(rdev->desc, selector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) EXPORT_SYMBOL_GPL(regulator_list_voltage_linear_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * regulator_list_voltage_table - List voltages with table based mapping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * @rdev: Regulator device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) * @selector: Selector to convert into a voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) * Regulators with table based mapping between voltages and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) * selectors can set volt_table in the regulator descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) * and then use this function as their list_voltage() operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) int regulator_list_voltage_table(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) unsigned int selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (!rdev->desc->volt_table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) BUG_ON(!rdev->desc->volt_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) if (selector >= rdev->desc->n_voltages)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) return rdev->desc->volt_table[selector];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) EXPORT_SYMBOL_GPL(regulator_list_voltage_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) * regulator_set_bypass_regmap - Default set_bypass() using regmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * @rdev: device to operate on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * @enable: state to set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) if (enable) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) val = rdev->desc->bypass_val_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (!val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) val = rdev->desc->bypass_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) val = rdev->desc->bypass_val_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) return regmap_update_bits(rdev->regmap, rdev->desc->bypass_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) rdev->desc->bypass_mask, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) EXPORT_SYMBOL_GPL(regulator_set_bypass_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) * regulator_set_soft_start_regmap - Default set_soft_start() using regmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * @rdev: device to operate on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) int regulator_set_soft_start_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) val = rdev->desc->soft_start_val_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) if (!val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) val = rdev->desc->soft_start_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) return regmap_update_bits(rdev->regmap, rdev->desc->soft_start_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) rdev->desc->soft_start_mask, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) EXPORT_SYMBOL_GPL(regulator_set_soft_start_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) * regulator_set_pull_down_regmap - Default set_pull_down() using regmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) * @rdev: device to operate on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) int regulator_set_pull_down_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) val = rdev->desc->pull_down_val_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (!val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) val = rdev->desc->pull_down_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) return regmap_update_bits(rdev->regmap, rdev->desc->pull_down_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) rdev->desc->pull_down_mask, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) EXPORT_SYMBOL_GPL(regulator_set_pull_down_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) * regulator_get_bypass_regmap - Default get_bypass() using regmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) * @rdev: device to operate on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) * @enable: current state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) unsigned int val_on = rdev->desc->bypass_val_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) ret = regmap_read(rdev->regmap, rdev->desc->bypass_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (!val_on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) val_on = rdev->desc->bypass_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) *enable = (val & rdev->desc->bypass_mask) == val_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) EXPORT_SYMBOL_GPL(regulator_get_bypass_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) * regulator_set_active_discharge_regmap - Default set_active_discharge()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) * using regmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) * @rdev: device to operate on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) * @enable: state to set, 0 to disable and 1 to enable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) int regulator_set_active_discharge_regmap(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) val = rdev->desc->active_discharge_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) val = rdev->desc->active_discharge_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) return regmap_update_bits(rdev->regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) rdev->desc->active_discharge_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) rdev->desc->active_discharge_mask, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) EXPORT_SYMBOL_GPL(regulator_set_active_discharge_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) * regulator_set_current_limit_regmap - set_current_limit for regmap users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) * @min_uA: Lower bound for current limit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) * @max_uA: Upper bound for current limit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) * Regulators that use regmap for their register I/O can set curr_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) * csel_reg and csel_mask fields in their descriptor and then use this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) * as their set_current_limit operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) int regulator_set_current_limit_regmap(struct regulator_dev *rdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) int min_uA, int max_uA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) unsigned int n_currents = rdev->desc->n_current_limits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) int i, sel = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) if (n_currents == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) if (rdev->desc->curr_table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) const unsigned int *curr_table = rdev->desc->curr_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) bool ascend = curr_table[n_currents - 1] > curr_table[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) /* search for closest to maximum */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (ascend) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) for (i = n_currents - 1; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) if (min_uA <= curr_table[i] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) curr_table[i] <= max_uA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) sel = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) for (i = 0; i < n_currents; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) if (min_uA <= curr_table[i] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) curr_table[i] <= max_uA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) sel = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) if (sel < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) sel <<= ffs(rdev->desc->csel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) return regmap_update_bits(rdev->regmap, rdev->desc->csel_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) rdev->desc->csel_mask, sel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) EXPORT_SYMBOL_GPL(regulator_set_current_limit_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * regulator_get_current_limit_regmap - get_current_limit for regmap users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) * @rdev: regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * Regulators that use regmap for their register I/O can set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) * csel_reg and csel_mask fields in their descriptor and then use this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * as their get_current_limit operation, saving some code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) int regulator_get_current_limit_regmap(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) val &= rdev->desc->csel_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) val >>= ffs(rdev->desc->csel_mask) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) if (rdev->desc->curr_table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (val >= rdev->desc->n_current_limits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) return rdev->desc->curr_table[val];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) EXPORT_SYMBOL_GPL(regulator_get_current_limit_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) * regulator_bulk_set_supply_names - initialize the 'supply' fields in an array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * of regulator_bulk_data structs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * @consumers: array of regulator_bulk_data entries to initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) * @supply_names: array of supply name strings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) * @num_supplies: number of supply names to initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) * Note: the 'consumers' array must be the size of 'num_supplies'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) void regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) const char *const *supply_names,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) unsigned int num_supplies)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) for (i = 0; i < num_supplies; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) consumers[i].supply = supply_names[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) EXPORT_SYMBOL_GPL(regulator_bulk_set_supply_names);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) * regulator_is_equal - test whether two regulators are the same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) * @reg1: first regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) * @reg2: second regulator to operate on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) return reg1->rdev == reg2->rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) EXPORT_SYMBOL_GPL(regulator_is_equal);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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