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753 lines
20 KiB
753 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// tps80031-regulator.c -- TI TPS80031 regulator driver. |
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// |
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// Regulator driver for TI TPS80031/TPS80032 Fully Integrated Power |
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// Management with Power Path and Battery Charger. |
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// |
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// Copyright (c) 2012, NVIDIA Corporation. |
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// |
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// Author: Laxman Dewangan <[email protected]> |
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#include <linux/delay.h> |
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#include <linux/err.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/mfd/tps80031.h> |
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#include <linux/module.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/slab.h> |
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/* Flags for DCDC Voltage reading */ |
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#define DCDC_OFFSET_EN BIT(0) |
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#define DCDC_EXTENDED_EN BIT(1) |
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#define TRACK_MODE_ENABLE BIT(2) |
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#define SMPS_MULTOFFSET_VIO BIT(1) |
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#define SMPS_MULTOFFSET_SMPS1 BIT(3) |
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#define SMPS_MULTOFFSET_SMPS2 BIT(4) |
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#define SMPS_MULTOFFSET_SMPS3 BIT(6) |
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#define SMPS_MULTOFFSET_SMPS4 BIT(0) |
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#define SMPS_CMD_MASK 0xC0 |
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#define SMPS_VSEL_MASK 0x3F |
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#define LDO_VSEL_MASK 0x1F |
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#define LDO_TRACK_VSEL_MASK 0x3F |
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#define MISC2_LDOUSB_IN_VSYS BIT(4) |
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#define MISC2_LDOUSB_IN_PMID BIT(3) |
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#define MISC2_LDOUSB_IN_MASK 0x18 |
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#define MISC2_LDO3_SEL_VIB_VAL BIT(0) |
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#define MISC2_LDO3_SEL_VIB_MASK 0x1 |
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#define BOOST_HW_PWR_EN BIT(5) |
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#define BOOST_HW_PWR_EN_MASK BIT(5) |
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#define OPA_MODE_EN BIT(6) |
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#define OPA_MODE_EN_MASK BIT(6) |
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#define USB_VBUS_CTRL_SET 0x04 |
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#define USB_VBUS_CTRL_CLR 0x05 |
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#define VBUS_DISCHRG 0x20 |
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struct tps80031_regulator_info { |
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/* Regulator register address.*/ |
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u8 trans_reg; |
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u8 state_reg; |
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u8 force_reg; |
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u8 volt_reg; |
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u8 volt_id; |
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/*Power request bits */ |
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int preq_bit; |
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/* used by regulator core */ |
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struct regulator_desc desc; |
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}; |
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struct tps80031_regulator { |
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struct device *dev; |
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struct tps80031_regulator_info *rinfo; |
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u8 device_flags; |
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unsigned int config_flags; |
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unsigned int ext_ctrl_flag; |
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}; |
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static inline struct device *to_tps80031_dev(struct regulator_dev *rdev) |
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{ |
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return rdev_get_dev(rdev)->parent->parent; |
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} |
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static int tps80031_reg_is_enabled(struct regulator_dev *rdev) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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u8 reg_val; |
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int ret; |
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if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) |
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return true; |
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ret = tps80031_read(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, |
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®_val); |
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if (ret < 0) { |
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dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n", |
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ri->rinfo->state_reg, ret); |
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return ret; |
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} |
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return (reg_val & TPS80031_STATE_MASK) == TPS80031_STATE_ON; |
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} |
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static int tps80031_reg_enable(struct regulator_dev *rdev) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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int ret; |
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if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) |
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return 0; |
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ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, |
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TPS80031_STATE_ON, TPS80031_STATE_MASK); |
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if (ret < 0) { |
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dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", |
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ri->rinfo->state_reg, ret); |
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return ret; |
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} |
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return ret; |
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} |
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static int tps80031_reg_disable(struct regulator_dev *rdev) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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int ret; |
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if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) |
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return 0; |
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ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, |
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TPS80031_STATE_OFF, TPS80031_STATE_MASK); |
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if (ret < 0) |
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dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", |
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ri->rinfo->state_reg, ret); |
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return ret; |
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} |
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/* DCDC voltages for the selector of 58 to 63 */ |
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static const int tps80031_dcdc_voltages[4][5] = { |
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{ 1350, 1500, 1800, 1900, 2100}, |
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{ 1350, 1500, 1800, 1900, 2100}, |
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{ 2084, 2315, 2778, 2932, 3241}, |
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{ 4167, 2315, 2778, 2932, 3241}, |
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}; |
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static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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int volt_index = ri->device_flags & 0x3; |
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if (sel == 0) |
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return 0; |
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else if (sel < 58) |
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return regulator_list_voltage_linear(rdev, sel - 1); |
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else |
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return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000; |
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} |
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static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev, |
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unsigned vsel) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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int ret; |
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u8 reg_val; |
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if (ri->rinfo->force_reg) { |
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ret = tps80031_read(parent, ri->rinfo->volt_id, |
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ri->rinfo->force_reg, ®_val); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", |
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ri->rinfo->force_reg, ret); |
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return ret; |
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} |
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if (!(reg_val & SMPS_CMD_MASK)) { |
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ret = tps80031_update(parent, ri->rinfo->volt_id, |
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ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK); |
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if (ret < 0) |
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dev_err(ri->dev, |
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"reg 0x%02x update failed, e = %d\n", |
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ri->rinfo->force_reg, ret); |
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return ret; |
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} |
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} |
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ret = tps80031_update(parent, ri->rinfo->volt_id, |
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ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK); |
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if (ret < 0) |
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dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n", |
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ri->rinfo->volt_reg, ret); |
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return ret; |
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} |
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static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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uint8_t vsel = 0; |
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int ret; |
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if (ri->rinfo->force_reg) { |
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ret = tps80031_read(parent, ri->rinfo->volt_id, |
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ri->rinfo->force_reg, &vsel); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", |
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ri->rinfo->force_reg, ret); |
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return ret; |
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} |
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if (!(vsel & SMPS_CMD_MASK)) |
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return vsel & SMPS_VSEL_MASK; |
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} |
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ret = tps80031_read(parent, ri->rinfo->volt_id, |
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ri->rinfo->volt_reg, &vsel); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", |
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ri->rinfo->volt_reg, ret); |
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return ret; |
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} |
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return vsel & SMPS_VSEL_MASK; |
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} |
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static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, |
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unsigned int sel) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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/* Check for valid setting for TPS80031 or TPS80032-ES1.0 */ |
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if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) && |
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(ri->device_flags & TRACK_MODE_ENABLE)) { |
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unsigned nvsel = (sel) & 0x1F; |
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if (((tps80031_get_chip_info(parent) == TPS80031) || |
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((tps80031_get_chip_info(parent) == TPS80032) && |
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(tps80031_get_pmu_version(parent) == 0x0))) && |
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((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) { |
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dev_err(ri->dev, |
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"Invalid sel %d in track mode LDO2\n", |
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nvsel); |
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return -EINVAL; |
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} |
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} |
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return regulator_list_voltage_linear(rdev, sel); |
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} |
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static int tps80031_ldo_map_voltage(struct regulator_dev *rdev, |
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int min_uV, int max_uV) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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/* Check for valid setting for TPS80031 or TPS80032-ES1.0 */ |
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if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) && |
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(ri->device_flags & TRACK_MODE_ENABLE)) { |
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if (((tps80031_get_chip_info(parent) == TPS80031) || |
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((tps80031_get_chip_info(parent) == TPS80032) && |
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(tps80031_get_pmu_version(parent) == 0x0)))) { |
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return regulator_map_voltage_iterate(rdev, min_uV, |
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max_uV); |
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} |
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} |
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return regulator_map_voltage_linear(rdev, min_uV, max_uV); |
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} |
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static int tps80031_vbus_is_enabled(struct regulator_dev *rdev) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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int ret; |
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uint8_t ctrl1 = 0; |
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uint8_t ctrl3 = 0; |
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ret = tps80031_read(parent, TPS80031_SLAVE_ID2, |
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TPS80031_CHARGERUSB_CTRL1, &ctrl1); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", |
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TPS80031_CHARGERUSB_CTRL1, ret); |
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return ret; |
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} |
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ret = tps80031_read(parent, TPS80031_SLAVE_ID2, |
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TPS80031_CHARGERUSB_CTRL3, &ctrl3); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", |
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TPS80031_CHARGERUSB_CTRL3, ret); |
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return ret; |
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} |
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if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN)) |
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return 1; |
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return ret; |
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} |
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static int tps80031_vbus_enable(struct regulator_dev *rdev) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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int ret; |
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ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2, |
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TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", |
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TPS80031_CHARGERUSB_CTRL1, ret); |
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return ret; |
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} |
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ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2, |
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TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", |
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TPS80031_CHARGERUSB_CTRL3, ret); |
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return ret; |
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} |
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return ret; |
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} |
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static int tps80031_vbus_disable(struct regulator_dev *rdev) |
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{ |
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev); |
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struct device *parent = to_tps80031_dev(rdev); |
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int ret; |
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if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) { |
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ret = tps80031_write(parent, TPS80031_SLAVE_ID2, |
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USB_VBUS_CTRL_SET, VBUS_DISCHRG); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", |
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USB_VBUS_CTRL_SET, ret); |
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return ret; |
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} |
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} |
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ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2, |
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TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", |
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TPS80031_CHARGERUSB_CTRL1, ret); |
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return ret; |
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} |
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ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2, |
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TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", |
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TPS80031_CHARGERUSB_CTRL3, ret); |
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return ret; |
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} |
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mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000)); |
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if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) { |
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ret = tps80031_write(parent, TPS80031_SLAVE_ID2, |
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USB_VBUS_CTRL_CLR, VBUS_DISCHRG); |
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if (ret < 0) { |
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dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", |
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USB_VBUS_CTRL_CLR, ret); |
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return ret; |
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} |
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} |
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return ret; |
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} |
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static const struct regulator_ops tps80031_dcdc_ops = { |
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.list_voltage = tps80031_dcdc_list_voltage, |
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.set_voltage_sel = tps80031_dcdc_set_voltage_sel, |
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.get_voltage_sel = tps80031_dcdc_get_voltage_sel, |
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.enable = tps80031_reg_enable, |
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.disable = tps80031_reg_disable, |
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.is_enabled = tps80031_reg_is_enabled, |
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}; |
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static const struct regulator_ops tps80031_ldo_ops = { |
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.list_voltage = tps80031_ldo_list_voltage, |
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.map_voltage = tps80031_ldo_map_voltage, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.enable = tps80031_reg_enable, |
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.disable = tps80031_reg_disable, |
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.is_enabled = tps80031_reg_is_enabled, |
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}; |
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static const struct regulator_ops tps80031_vbus_sw_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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.enable = tps80031_vbus_enable, |
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.disable = tps80031_vbus_disable, |
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.is_enabled = tps80031_vbus_is_enabled, |
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}; |
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static const struct regulator_ops tps80031_vbus_hw_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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}; |
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static const struct regulator_ops tps80031_ext_reg_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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.enable = tps80031_reg_enable, |
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.disable = tps80031_reg_disable, |
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.is_enabled = tps80031_reg_is_enabled, |
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}; |
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/* Non-exiting default definition for some register */ |
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#define TPS80031_SMPS3_CFG_FORCE 0 |
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#define TPS80031_SMPS4_CFG_FORCE 0 |
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#define TPS80031_VBUS_CFG_TRANS 0 |
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#define TPS80031_VBUS_CFG_STATE 0 |
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#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \ |
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{ \ |
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.trans_reg = TPS80031_##_id##_CFG_TRANS, \ |
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.state_reg = TPS80031_##_id##_CFG_STATE, \ |
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.force_reg = TPS80031_##_id##_CFG_FORCE, \ |
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.volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ |
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.volt_id = TPS80031_SLAVE_##_volt_id, \ |
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.preq_bit = _pbit, \ |
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.desc = { \ |
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.name = "tps80031_"#_id, \ |
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.id = TPS80031_REGULATOR_##_id, \ |
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.n_voltages = 63, \ |
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.ops = &tps80031_dcdc_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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.enable_time = 500, \ |
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}, \ |
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} |
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#define TPS80031_REG_LDO(_id, _preq_bit) \ |
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{ \ |
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.trans_reg = TPS80031_##_id##_CFG_TRANS, \ |
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.state_reg = TPS80031_##_id##_CFG_STATE, \ |
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.volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ |
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.volt_id = TPS80031_SLAVE_ID1, \ |
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.preq_bit = _preq_bit, \ |
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.desc = { \ |
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.owner = THIS_MODULE, \ |
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.name = "tps80031_"#_id, \ |
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.id = TPS80031_REGULATOR_##_id, \ |
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.ops = &tps80031_ldo_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.min_uV = 1000000, \ |
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.uV_step = 100000, \ |
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.linear_min_sel = 1, \ |
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.n_voltages = 25, \ |
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.vsel_reg = TPS80031_##_id##_CFG_VOLTAGE, \ |
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.vsel_mask = LDO_VSEL_MASK, \ |
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.enable_time = 500, \ |
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}, \ |
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} |
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#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \ |
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{ \ |
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.trans_reg = TPS80031_##_id##_CFG_TRANS, \ |
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.state_reg = TPS80031_##_id##_CFG_STATE, \ |
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.volt_id = TPS80031_SLAVE_ID1, \ |
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.preq_bit = _pbit, \ |
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.desc = { \ |
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.name = "tps80031_"#_id, \ |
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.id = TPS80031_REGULATOR_##_id, \ |
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.min_uV = max_mV * 1000, \ |
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.n_voltages = 1, \ |
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.ops = &_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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.enable_time = _delay, \ |
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}, \ |
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} |
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static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = { |
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TPS80031_REG_SMPS(VIO, ID0, 4), |
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TPS80031_REG_SMPS(SMPS1, ID0, 0), |
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TPS80031_REG_SMPS(SMPS2, ID0, 1), |
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TPS80031_REG_SMPS(SMPS3, ID1, 2), |
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TPS80031_REG_SMPS(SMPS4, ID1, 3), |
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TPS80031_REG_LDO(VANA, -1), |
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TPS80031_REG_LDO(LDO1, 8), |
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TPS80031_REG_LDO(LDO2, 9), |
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TPS80031_REG_LDO(LDO3, 10), |
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TPS80031_REG_LDO(LDO4, 11), |
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TPS80031_REG_LDO(LDO5, 12), |
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TPS80031_REG_LDO(LDO6, 13), |
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TPS80031_REG_LDO(LDO7, 14), |
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TPS80031_REG_LDO(LDOLN, 15), |
|
TPS80031_REG_LDO(LDOUSB, 5), |
|
TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_hw_ops, 100000, -1), |
|
TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16), |
|
TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17), |
|
TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18), |
|
}; |
|
|
|
static int tps80031_power_req_config(struct device *parent, |
|
struct tps80031_regulator *ri, |
|
struct tps80031_regulator_platform_data *tps80031_pdata) |
|
{ |
|
int ret = 0; |
|
|
|
if (ri->rinfo->preq_bit < 0) |
|
goto skip_pwr_req_config; |
|
|
|
ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag, |
|
ri->rinfo->preq_bit, ri->rinfo->state_reg, |
|
ri->rinfo->trans_reg); |
|
if (ret < 0) { |
|
dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret); |
|
return ret; |
|
} |
|
|
|
skip_pwr_req_config: |
|
if (tps80031_pdata->ext_ctrl_flag & TPS80031_PWR_ON_ON_SLEEP) { |
|
ret = tps80031_update(parent, TPS80031_SLAVE_ID1, |
|
ri->rinfo->trans_reg, TPS80031_TRANS_SLEEP_ON, |
|
TPS80031_TRANS_SLEEP_MASK); |
|
if (ret < 0) { |
|
dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n", |
|
ri->rinfo->trans_reg, ret); |
|
return ret; |
|
} |
|
} |
|
return ret; |
|
} |
|
|
|
static int tps80031_regulator_config(struct device *parent, |
|
struct tps80031_regulator *ri, |
|
struct tps80031_regulator_platform_data *tps80031_pdata) |
|
{ |
|
int ret = 0; |
|
|
|
switch (ri->rinfo->desc.id) { |
|
case TPS80031_REGULATOR_LDOUSB: |
|
if (ri->config_flags & (TPS80031_USBLDO_INPUT_VSYS | |
|
TPS80031_USBLDO_INPUT_PMID)) { |
|
unsigned val; |
|
|
|
if (ri->config_flags & TPS80031_USBLDO_INPUT_VSYS) |
|
val = MISC2_LDOUSB_IN_VSYS; |
|
else |
|
val = MISC2_LDOUSB_IN_PMID; |
|
|
|
ret = tps80031_update(parent, TPS80031_SLAVE_ID1, |
|
TPS80031_MISC2, val, |
|
MISC2_LDOUSB_IN_MASK); |
|
if (ret < 0) { |
|
dev_err(ri->dev, |
|
"LDOUSB config failed, e= %d\n", ret); |
|
return ret; |
|
} |
|
} |
|
break; |
|
|
|
case TPS80031_REGULATOR_LDO3: |
|
if (ri->config_flags & TPS80031_LDO3_OUTPUT_VIB) { |
|
ret = tps80031_update(parent, TPS80031_SLAVE_ID1, |
|
TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL, |
|
MISC2_LDO3_SEL_VIB_MASK); |
|
if (ret < 0) { |
|
dev_err(ri->dev, |
|
"LDO3 config failed, e = %d\n", ret); |
|
return ret; |
|
} |
|
} |
|
break; |
|
|
|
case TPS80031_REGULATOR_VBUS: |
|
/* Provide SW control Ops if VBUS is SW control */ |
|
if (!(ri->config_flags & TPS80031_VBUS_SW_ONLY)) |
|
ri->rinfo->desc.ops = &tps80031_vbus_sw_ops; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
/* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */ |
|
ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->trans_reg, |
|
TPS80031_TRANS_ACTIVE_ON | TPS80031_TRANS_SLEEP_OFF | |
|
TPS80031_TRANS_OFF_OFF, TPS80031_TRANS_ACTIVE_MASK | |
|
TPS80031_TRANS_SLEEP_MASK | TPS80031_TRANS_OFF_MASK); |
|
if (ret < 0) { |
|
dev_err(ri->dev, "trans reg update failed, e %d\n", ret); |
|
return ret; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int check_smps_mode_mult(struct device *parent, |
|
struct tps80031_regulator *ri) |
|
{ |
|
int mult_offset; |
|
int ret; |
|
u8 smps_offset; |
|
u8 smps_mult; |
|
|
|
ret = tps80031_read(parent, TPS80031_SLAVE_ID1, |
|
TPS80031_SMPS_OFFSET, &smps_offset); |
|
if (ret < 0) { |
|
dev_err(parent, "Error in reading smps offset register\n"); |
|
return ret; |
|
} |
|
|
|
ret = tps80031_read(parent, TPS80031_SLAVE_ID1, |
|
TPS80031_SMPS_MULT, &smps_mult); |
|
if (ret < 0) { |
|
dev_err(parent, "Error in reading smps mult register\n"); |
|
return ret; |
|
} |
|
|
|
switch (ri->rinfo->desc.id) { |
|
case TPS80031_REGULATOR_VIO: |
|
mult_offset = SMPS_MULTOFFSET_VIO; |
|
break; |
|
case TPS80031_REGULATOR_SMPS1: |
|
mult_offset = SMPS_MULTOFFSET_SMPS1; |
|
break; |
|
case TPS80031_REGULATOR_SMPS2: |
|
mult_offset = SMPS_MULTOFFSET_SMPS2; |
|
break; |
|
case TPS80031_REGULATOR_SMPS3: |
|
mult_offset = SMPS_MULTOFFSET_SMPS3; |
|
break; |
|
case TPS80031_REGULATOR_SMPS4: |
|
mult_offset = SMPS_MULTOFFSET_SMPS4; |
|
break; |
|
case TPS80031_REGULATOR_LDO2: |
|
ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0; |
|
/* TRACK mode the ldo2 varies from 600mV to 1300mV */ |
|
if (ri->device_flags & TRACK_MODE_ENABLE) { |
|
ri->rinfo->desc.min_uV = 600000; |
|
ri->rinfo->desc.uV_step = 12500; |
|
ri->rinfo->desc.n_voltages = 57; |
|
ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK; |
|
} |
|
return 0; |
|
default: |
|
return 0; |
|
} |
|
|
|
ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0; |
|
ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0; |
|
switch (ri->device_flags) { |
|
case 0: |
|
ri->rinfo->desc.min_uV = 607700; |
|
ri->rinfo->desc.uV_step = 12660; |
|
break; |
|
case DCDC_OFFSET_EN: |
|
ri->rinfo->desc.min_uV = 700000; |
|
ri->rinfo->desc.uV_step = 12500; |
|
break; |
|
case DCDC_EXTENDED_EN: |
|
ri->rinfo->desc.min_uV = 1852000; |
|
ri->rinfo->desc.uV_step = 38600; |
|
break; |
|
case DCDC_OFFSET_EN | DCDC_EXTENDED_EN: |
|
ri->rinfo->desc.min_uV = 2161000; |
|
ri->rinfo->desc.uV_step = 38600; |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int tps80031_regulator_probe(struct platform_device *pdev) |
|
{ |
|
struct tps80031_platform_data *pdata; |
|
struct tps80031_regulator_platform_data *tps_pdata; |
|
struct tps80031_regulator *ri; |
|
struct tps80031_regulator *pmic; |
|
struct regulator_dev *rdev; |
|
struct regulator_config config = { }; |
|
struct tps80031 *tps80031_mfd = dev_get_drvdata(pdev->dev.parent); |
|
int ret; |
|
int num; |
|
|
|
pdata = dev_get_platdata(pdev->dev.parent); |
|
|
|
if (!pdata) { |
|
dev_err(&pdev->dev, "No platform data\n"); |
|
return -EINVAL; |
|
} |
|
|
|
pmic = devm_kcalloc(&pdev->dev, |
|
TPS80031_REGULATOR_MAX, sizeof(*pmic), GFP_KERNEL); |
|
if (!pmic) |
|
return -ENOMEM; |
|
|
|
for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) { |
|
tps_pdata = pdata->regulator_pdata[num]; |
|
ri = &pmic[num]; |
|
ri->rinfo = &tps80031_rinfo[num]; |
|
ri->dev = &pdev->dev; |
|
|
|
check_smps_mode_mult(pdev->dev.parent, ri); |
|
config.dev = &pdev->dev; |
|
config.init_data = NULL; |
|
config.driver_data = ri; |
|
config.regmap = tps80031_mfd->regmap[ri->rinfo->volt_id]; |
|
|
|
if (tps_pdata) { |
|
config.init_data = tps_pdata->reg_init_data; |
|
ri->config_flags = tps_pdata->config_flags; |
|
ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag; |
|
ret = tps80031_regulator_config(pdev->dev.parent, |
|
ri, tps_pdata); |
|
if (ret < 0) { |
|
dev_err(&pdev->dev, |
|
"regulator config failed, e %d\n", ret); |
|
return ret; |
|
} |
|
|
|
ret = tps80031_power_req_config(pdev->dev.parent, |
|
ri, tps_pdata); |
|
if (ret < 0) { |
|
dev_err(&pdev->dev, |
|
"pwr_req config failed, err %d\n", ret); |
|
return ret; |
|
} |
|
} |
|
rdev = devm_regulator_register(&pdev->dev, &ri->rinfo->desc, |
|
&config); |
|
if (IS_ERR(rdev)) { |
|
dev_err(&pdev->dev, |
|
"register regulator failed %s\n", |
|
ri->rinfo->desc.name); |
|
return PTR_ERR(rdev); |
|
} |
|
} |
|
|
|
platform_set_drvdata(pdev, pmic); |
|
return 0; |
|
} |
|
|
|
static struct platform_driver tps80031_regulator_driver = { |
|
.driver = { |
|
.name = "tps80031-pmic", |
|
}, |
|
.probe = tps80031_regulator_probe, |
|
}; |
|
|
|
static int __init tps80031_regulator_init(void) |
|
{ |
|
return platform_driver_register(&tps80031_regulator_driver); |
|
} |
|
subsys_initcall(tps80031_regulator_init); |
|
|
|
static void __exit tps80031_regulator_exit(void) |
|
{ |
|
platform_driver_unregister(&tps80031_regulator_driver); |
|
} |
|
module_exit(tps80031_regulator_exit); |
|
|
|
MODULE_ALIAS("platform:tps80031-regulator"); |
|
MODULE_DESCRIPTION("Regulator Driver for TI TPS80031/TPS80032 PMIC"); |
|
MODULE_AUTHOR("Laxman Dewangan <[email protected]>"); |
|
MODULE_LICENSE("GPL v2");
|
|
|