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542 lines
16 KiB
542 lines
16 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Regulator driver for TI TPS6586x |
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* |
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* Copyright (C) 2010 Compulab Ltd. |
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* Author: Mike Rapoport <[email protected]> |
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* |
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* Based on da903x |
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* Copyright (C) 2006-2008 Marvell International Ltd. |
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* Copyright (C) 2008 Compulab Ltd. |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/err.h> |
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#include <linux/of.h> |
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#include <linux/slab.h> |
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#include <linux/platform_device.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/machine.h> |
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#include <linux/regulator/of_regulator.h> |
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#include <linux/mfd/tps6586x.h> |
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/* supply control and voltage setting */ |
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#define TPS6586X_SUPPLYENA 0x10 |
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#define TPS6586X_SUPPLYENB 0x11 |
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#define TPS6586X_SUPPLYENC 0x12 |
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#define TPS6586X_SUPPLYEND 0x13 |
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#define TPS6586X_SUPPLYENE 0x14 |
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#define TPS6586X_VCC1 0x20 |
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#define TPS6586X_VCC2 0x21 |
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#define TPS6586X_SM1V1 0x23 |
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#define TPS6586X_SM1V2 0x24 |
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#define TPS6586X_SM1SL 0x25 |
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#define TPS6586X_SM0V1 0x26 |
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#define TPS6586X_SM0V2 0x27 |
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#define TPS6586X_SM0SL 0x28 |
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#define TPS6586X_LDO2AV1 0x29 |
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#define TPS6586X_LDO2AV2 0x2A |
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#define TPS6586X_LDO2BV1 0x2F |
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#define TPS6586X_LDO2BV2 0x30 |
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#define TPS6586X_LDO4V1 0x32 |
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#define TPS6586X_LDO4V2 0x33 |
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/* converter settings */ |
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#define TPS6586X_SUPPLYV1 0x41 |
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#define TPS6586X_SUPPLYV2 0x42 |
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#define TPS6586X_SUPPLYV3 0x43 |
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#define TPS6586X_SUPPLYV4 0x44 |
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#define TPS6586X_SUPPLYV5 0x45 |
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#define TPS6586X_SUPPLYV6 0x46 |
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#define TPS6586X_SMODE1 0x47 |
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#define TPS6586X_SMODE2 0x48 |
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struct tps6586x_regulator { |
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struct regulator_desc desc; |
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int enable_bit[2]; |
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int enable_reg[2]; |
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}; |
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static const struct regulator_ops tps6586x_rw_regulator_ops = { |
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.list_voltage = regulator_list_voltage_table, |
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.map_voltage = regulator_map_voltage_ascend, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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}; |
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static const struct regulator_ops tps6586x_rw_linear_regulator_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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}; |
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static const struct regulator_ops tps6586x_ro_regulator_ops = { |
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.list_voltage = regulator_list_voltage_table, |
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.map_voltage = regulator_map_voltage_ascend, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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}; |
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static const struct regulator_ops tps6586x_sys_regulator_ops = { |
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}; |
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static const unsigned int tps6586x_ldo0_voltages[] = { |
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1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
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}; |
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static const unsigned int tps6586x_ldo_voltages[] = { |
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1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
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}; |
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static const unsigned int tps658640_rtc_voltages[] = { |
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2500000, 2850000, 3100000, 3300000, |
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}; |
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#define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \ |
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ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
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.desc = { \ |
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.supply_name = _pin_name, \ |
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.name = "REG-" #_id, \ |
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.ops = &tps6586x_## _ops ## _regulator_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.id = TPS6586X_ID_##_id, \ |
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.n_voltages = ARRAY_SIZE(vdata##_voltages), \ |
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.volt_table = vdata##_voltages, \ |
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.owner = THIS_MODULE, \ |
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.enable_reg = TPS6586X_SUPPLY##ereg0, \ |
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.enable_mask = 1 << (ebit0), \ |
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.vsel_reg = TPS6586X_##vreg, \ |
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.vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
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.apply_reg = (goreg), \ |
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.apply_bit = (gobit), \ |
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}, \ |
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.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
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.enable_bit[0] = (ebit0), \ |
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.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
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.enable_bit[1] = (ebit1), |
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#define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \ |
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uv_step, vreg, shift, nbits, ereg0, \ |
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ebit0, ereg1, ebit1, goreg, gobit) \ |
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.desc = { \ |
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.supply_name = _pin_name, \ |
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.name = "REG-" #_id, \ |
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.ops = &tps6586x_## _ops ## _regulator_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.id = TPS6586X_ID_##_id, \ |
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.n_voltages = n_volt, \ |
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.min_uV = min_uv, \ |
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.uV_step = uv_step, \ |
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.owner = THIS_MODULE, \ |
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.enable_reg = TPS6586X_SUPPLY##ereg0, \ |
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.enable_mask = 1 << (ebit0), \ |
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.vsel_reg = TPS6586X_##vreg, \ |
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.vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
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.apply_reg = (goreg), \ |
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.apply_bit = (gobit), \ |
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}, \ |
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.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
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.enable_bit[0] = (ebit0), \ |
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.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
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.enable_bit[1] = (ebit1), |
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#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
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ereg0, ebit0, ereg1, ebit1) \ |
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{ \ |
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TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \ |
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ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
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} |
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#define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \ |
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shift, nbits, ereg0, ebit0, ereg1, ebit1) \ |
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{ \ |
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TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \ |
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min_uv, uv_step, vreg, shift, nbits, \ |
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ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
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} |
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#define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
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ereg0, ebit0, ereg1, ebit1) \ |
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{ \ |
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TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \ |
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ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
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} |
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#define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \ |
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nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
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{ \ |
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TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \ |
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min_uv, uv_step, vreg, shift, nbits, \ |
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ereg0, ebit0, ereg1, ebit1, goreg, \ |
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gobit) \ |
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} |
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#define TPS6586X_SYS_REGULATOR() \ |
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{ \ |
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.desc = { \ |
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.supply_name = "sys", \ |
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.name = "REG-SYS", \ |
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.ops = &tps6586x_sys_regulator_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.id = TPS6586X_ID_SYS, \ |
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.owner = THIS_MODULE, \ |
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}, \ |
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} |
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static struct tps6586x_regulator tps6586x_regulator[] = { |
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TPS6586X_SYS_REGULATOR(), |
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TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0, |
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END, 0), |
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TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2, |
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END, 2), |
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TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6, |
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ENE, 6), |
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TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4, |
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END, 4), |
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TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5, |
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END, 5), |
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TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6, |
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END, 6), |
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TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7, |
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ENE, 7), |
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TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7, |
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V4, 7), |
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TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1, |
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0, 5, ENC, 1, END, 1), |
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TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2, |
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0, 5, ENC, 7, END, 7), |
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TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5, |
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ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)), |
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TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5, |
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ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)), |
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TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5, |
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ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)), |
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TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5, |
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ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)), |
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}; |
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static struct tps6586x_regulator tps658623_regulator[] = { |
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TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2, |
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0, 5, ENC, 7, END, 7), |
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}; |
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static struct tps6586x_regulator tps658640_regulator[] = { |
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TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3, |
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ENC, 2, END, 2), |
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TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3, |
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ENE, 6, ENE, 6), |
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TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3, |
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ENC, 4, END, 4), |
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TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3, |
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ENC, 5, END, 5), |
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TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3, |
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ENC, 6, END, 6), |
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TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3, |
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ENE, 7, ENE, 7), |
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TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2, |
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0, 5, ENC, 7, END, 7), |
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TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2, |
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V4, 7, V4, 7), |
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}; |
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static struct tps6586x_regulator tps658643_regulator[] = { |
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TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2, |
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0, 5, ENC, 7, END, 7), |
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}; |
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/* |
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* TPS6586X has 2 enable bits that are OR'ed to determine the actual |
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* regulator state. Clearing one of this bits allows switching |
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* regulator on and of with single register write. |
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*/ |
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static inline int tps6586x_regulator_preinit(struct device *parent, |
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struct tps6586x_regulator *ri) |
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{ |
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uint8_t val1, val2; |
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int ret; |
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if (ri->enable_reg[0] == ri->enable_reg[1] && |
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ri->enable_bit[0] == ri->enable_bit[1]) |
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return 0; |
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ret = tps6586x_read(parent, ri->enable_reg[0], &val1); |
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if (ret) |
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return ret; |
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ret = tps6586x_read(parent, ri->enable_reg[1], &val2); |
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if (ret) |
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return ret; |
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if (!(val2 & (1 << ri->enable_bit[1]))) |
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return 0; |
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/* |
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* The regulator is on, but it's enabled with the bit we don't |
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* want to use, so we switch the enable bits |
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*/ |
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if (!(val1 & (1 << ri->enable_bit[0]))) { |
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ret = tps6586x_set_bits(parent, ri->enable_reg[0], |
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1 << ri->enable_bit[0]); |
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if (ret) |
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return ret; |
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} |
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return tps6586x_clr_bits(parent, ri->enable_reg[1], |
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1 << ri->enable_bit[1]); |
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} |
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static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev, |
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int id, struct regulator_init_data *p) |
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{ |
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struct device *parent = pdev->dev.parent; |
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struct tps6586x_settings *setting = p->driver_data; |
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uint8_t reg; |
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if (setting == NULL) |
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return 0; |
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if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET)) |
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return 0; |
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/* only SM0 and SM1 can have the slew rate settings */ |
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switch (id) { |
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case TPS6586X_ID_SM_0: |
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reg = TPS6586X_SM0SL; |
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break; |
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case TPS6586X_ID_SM_1: |
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reg = TPS6586X_SM1SL; |
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break; |
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default: |
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dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n"); |
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return -EINVAL; |
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} |
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return tps6586x_write(parent, reg, |
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setting->slew_rate & TPS6586X_SLEW_RATE_MASK); |
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} |
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static struct tps6586x_regulator *find_regulator_info(int id, int version) |
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{ |
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struct tps6586x_regulator *ri; |
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struct tps6586x_regulator *table = NULL; |
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int num; |
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int i; |
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switch (version) { |
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case TPS658623: |
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case TPS658624: |
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table = tps658623_regulator; |
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num = ARRAY_SIZE(tps658623_regulator); |
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break; |
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case TPS658640: |
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case TPS658640v2: |
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table = tps658640_regulator; |
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num = ARRAY_SIZE(tps658640_regulator); |
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break; |
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case TPS658643: |
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table = tps658643_regulator; |
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num = ARRAY_SIZE(tps658643_regulator); |
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break; |
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} |
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/* Search version specific table first */ |
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if (table) { |
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for (i = 0; i < num; i++) { |
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ri = &table[i]; |
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if (ri->desc.id == id) |
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return ri; |
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} |
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} |
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for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) { |
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ri = &tps6586x_regulator[i]; |
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if (ri->desc.id == id) |
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return ri; |
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} |
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return NULL; |
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} |
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#ifdef CONFIG_OF |
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static struct of_regulator_match tps6586x_matches[] = { |
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{ .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS }, |
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{ .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 }, |
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{ .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 }, |
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{ .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 }, |
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{ .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 }, |
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{ .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 }, |
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{ .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 }, |
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{ .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 }, |
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{ .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 }, |
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{ .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 }, |
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{ .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 }, |
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{ .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 }, |
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{ .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 }, |
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{ .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 }, |
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{ .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC }, |
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}; |
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static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
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struct platform_device *pdev, |
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struct of_regulator_match **tps6586x_reg_matches) |
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{ |
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const unsigned int num = ARRAY_SIZE(tps6586x_matches); |
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struct device_node *np = pdev->dev.parent->of_node; |
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struct device_node *regs; |
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const char *sys_rail = NULL; |
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unsigned int i; |
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struct tps6586x_platform_data *pdata; |
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int err; |
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regs = of_get_child_by_name(np, "regulators"); |
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if (!regs) { |
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dev_err(&pdev->dev, "regulator node not found\n"); |
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return NULL; |
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} |
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err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num); |
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of_node_put(regs); |
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if (err < 0) { |
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dev_err(&pdev->dev, "Regulator match failed, e %d\n", err); |
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return NULL; |
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} |
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pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
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if (!pdata) |
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return NULL; |
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for (i = 0; i < num; i++) { |
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uintptr_t id; |
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if (!tps6586x_matches[i].init_data) |
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continue; |
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pdata->reg_init_data[i] = tps6586x_matches[i].init_data; |
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id = (uintptr_t)tps6586x_matches[i].driver_data; |
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if (id == TPS6586X_ID_SYS) |
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sys_rail = pdata->reg_init_data[i]->constraints.name; |
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if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC)) |
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pdata->reg_init_data[i]->supply_regulator = sys_rail; |
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} |
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*tps6586x_reg_matches = tps6586x_matches; |
|
return pdata; |
|
} |
|
#else |
|
static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
|
struct platform_device *pdev, |
|
struct of_regulator_match **tps6586x_reg_matches) |
|
{ |
|
*tps6586x_reg_matches = NULL; |
|
return NULL; |
|
} |
|
#endif |
|
|
|
static int tps6586x_regulator_probe(struct platform_device *pdev) |
|
{ |
|
struct tps6586x_regulator *ri = NULL; |
|
struct regulator_config config = { }; |
|
struct regulator_dev *rdev; |
|
struct regulator_init_data *reg_data; |
|
struct tps6586x_platform_data *pdata; |
|
struct of_regulator_match *tps6586x_reg_matches = NULL; |
|
int version; |
|
int id; |
|
int err; |
|
|
|
dev_dbg(&pdev->dev, "Probing regulator\n"); |
|
|
|
pdata = dev_get_platdata(pdev->dev.parent); |
|
if ((!pdata) && (pdev->dev.parent->of_node)) |
|
pdata = tps6586x_parse_regulator_dt(pdev, |
|
&tps6586x_reg_matches); |
|
|
|
if (!pdata) { |
|
dev_err(&pdev->dev, "Platform data not available, exiting\n"); |
|
return -ENODEV; |
|
} |
|
|
|
version = tps6586x_get_version(pdev->dev.parent); |
|
|
|
for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) { |
|
reg_data = pdata->reg_init_data[id]; |
|
|
|
ri = find_regulator_info(id, version); |
|
|
|
if (!ri) { |
|
dev_err(&pdev->dev, "invalid regulator ID specified\n"); |
|
return -EINVAL; |
|
} |
|
|
|
err = tps6586x_regulator_preinit(pdev->dev.parent, ri); |
|
if (err) { |
|
dev_err(&pdev->dev, |
|
"regulator %d preinit failed, e %d\n", id, err); |
|
return err; |
|
} |
|
|
|
config.dev = pdev->dev.parent; |
|
config.init_data = reg_data; |
|
config.driver_data = ri; |
|
|
|
if (tps6586x_reg_matches) |
|
config.of_node = tps6586x_reg_matches[id].of_node; |
|
|
|
rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config); |
|
if (IS_ERR(rdev)) { |
|
dev_err(&pdev->dev, "failed to register regulator %s\n", |
|
ri->desc.name); |
|
return PTR_ERR(rdev); |
|
} |
|
|
|
if (reg_data) { |
|
err = tps6586x_regulator_set_slew_rate(pdev, id, |
|
reg_data); |
|
if (err < 0) { |
|
dev_err(&pdev->dev, |
|
"Slew rate config failed, e %d\n", err); |
|
return err; |
|
} |
|
} |
|
} |
|
|
|
platform_set_drvdata(pdev, rdev); |
|
return 0; |
|
} |
|
|
|
static struct platform_driver tps6586x_regulator_driver = { |
|
.driver = { |
|
.name = "tps6586x-regulator", |
|
}, |
|
.probe = tps6586x_regulator_probe, |
|
}; |
|
|
|
static int __init tps6586x_regulator_init(void) |
|
{ |
|
return platform_driver_register(&tps6586x_regulator_driver); |
|
} |
|
subsys_initcall(tps6586x_regulator_init); |
|
|
|
static void __exit tps6586x_regulator_exit(void) |
|
{ |
|
platform_driver_unregister(&tps6586x_regulator_driver); |
|
} |
|
module_exit(tps6586x_regulator_exit); |
|
|
|
MODULE_LICENSE("GPL"); |
|
MODULE_AUTHOR("Mike Rapoport <[email protected]>"); |
|
MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC"); |
|
MODULE_ALIAS("platform:tps6586x-regulator");
|
|
|