974 lines
29 KiB
C
974 lines
29 KiB
C
/*
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* Voltage regulator support for AMS AS3722 PMIC
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*
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* Copyright (C) 2013 ams
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*
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* Author: Florian Lobmaier <florian.lobmaier@ams.com>
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* Author: Laxman Dewangan <ldewangan@nvidia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/err.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mfd/as3722.h>
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#include <linux/of.h>
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#include <linux/of_platform.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/slab.h>
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/* Regulator IDs */
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enum as3722_regulators_id {
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AS3722_REGULATOR_ID_SD0,
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AS3722_REGULATOR_ID_SD1,
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AS3722_REGULATOR_ID_SD2,
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AS3722_REGULATOR_ID_SD3,
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AS3722_REGULATOR_ID_SD4,
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AS3722_REGULATOR_ID_SD5,
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AS3722_REGULATOR_ID_SD6,
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AS3722_REGULATOR_ID_LDO0,
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AS3722_REGULATOR_ID_LDO1,
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AS3722_REGULATOR_ID_LDO2,
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AS3722_REGULATOR_ID_LDO3,
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AS3722_REGULATOR_ID_LDO4,
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AS3722_REGULATOR_ID_LDO5,
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AS3722_REGULATOR_ID_LDO6,
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AS3722_REGULATOR_ID_LDO7,
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AS3722_REGULATOR_ID_LDO9,
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AS3722_REGULATOR_ID_LDO10,
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AS3722_REGULATOR_ID_LDO11,
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AS3722_REGULATOR_ID_MAX,
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};
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struct as3722_register_mapping {
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u8 regulator_id;
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const char *name;
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const char *sname;
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u8 vsel_reg;
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u8 vsel_mask;
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int n_voltages;
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u32 enable_reg;
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u8 enable_mask;
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u32 control_reg;
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u8 mode_mask;
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u32 sleep_ctrl_reg;
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u8 sleep_ctrl_mask;
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};
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struct as3722_regulator_config_data {
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struct regulator_init_data *reg_init;
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bool enable_tracking;
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int ext_control;
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};
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struct as3722_regulators {
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struct device *dev;
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struct as3722 *as3722;
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struct regulator_dev *rdevs[AS3722_REGULATOR_ID_MAX];
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struct regulator_desc desc[AS3722_REGULATOR_ID_MAX];
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struct as3722_regulator_config_data
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reg_config_data[AS3722_REGULATOR_ID_MAX];
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};
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static const struct as3722_register_mapping as3722_reg_lookup[] = {
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{
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.regulator_id = AS3722_REGULATOR_ID_SD0,
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.name = "as3722-sd0",
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.vsel_reg = AS3722_SD0_VOLTAGE_REG,
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.vsel_mask = AS3722_SD_VSEL_MASK,
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.enable_reg = AS3722_SD_CONTROL_REG,
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.enable_mask = AS3722_SDn_CTRL(0),
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
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.sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK,
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.control_reg = AS3722_SD0_CONTROL_REG,
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.mode_mask = AS3722_SD0_MODE_FAST,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_SD1,
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.name = "as3722-sd1",
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.vsel_reg = AS3722_SD1_VOLTAGE_REG,
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.vsel_mask = AS3722_SD_VSEL_MASK,
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.enable_reg = AS3722_SD_CONTROL_REG,
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.enable_mask = AS3722_SDn_CTRL(1),
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
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.sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK,
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.control_reg = AS3722_SD1_CONTROL_REG,
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.mode_mask = AS3722_SD1_MODE_FAST,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_SD2,
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.name = "as3722-sd2",
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.sname = "vsup-sd2",
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.vsel_reg = AS3722_SD2_VOLTAGE_REG,
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.vsel_mask = AS3722_SD_VSEL_MASK,
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.enable_reg = AS3722_SD_CONTROL_REG,
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.enable_mask = AS3722_SDn_CTRL(2),
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
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.sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK,
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.control_reg = AS3722_SD23_CONTROL_REG,
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.mode_mask = AS3722_SD2_MODE_FAST,
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.n_voltages = AS3722_SD2_VSEL_MAX + 1,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_SD3,
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.name = "as3722-sd3",
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.sname = "vsup-sd3",
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.vsel_reg = AS3722_SD3_VOLTAGE_REG,
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.vsel_mask = AS3722_SD_VSEL_MASK,
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.enable_reg = AS3722_SD_CONTROL_REG,
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.enable_mask = AS3722_SDn_CTRL(3),
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
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.sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK,
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.control_reg = AS3722_SD23_CONTROL_REG,
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.mode_mask = AS3722_SD3_MODE_FAST,
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.n_voltages = AS3722_SD2_VSEL_MAX + 1,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_SD4,
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.name = "as3722-sd4",
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.sname = "vsup-sd4",
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.vsel_reg = AS3722_SD4_VOLTAGE_REG,
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.vsel_mask = AS3722_SD_VSEL_MASK,
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.enable_reg = AS3722_SD_CONTROL_REG,
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.enable_mask = AS3722_SDn_CTRL(4),
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
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.sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK,
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.control_reg = AS3722_SD4_CONTROL_REG,
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.mode_mask = AS3722_SD4_MODE_FAST,
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.n_voltages = AS3722_SD2_VSEL_MAX + 1,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_SD5,
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.name = "as3722-sd5",
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.sname = "vsup-sd5",
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.vsel_reg = AS3722_SD5_VOLTAGE_REG,
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.vsel_mask = AS3722_SD_VSEL_MASK,
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.enable_reg = AS3722_SD_CONTROL_REG,
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.enable_mask = AS3722_SDn_CTRL(5),
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
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.sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK,
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.control_reg = AS3722_SD5_CONTROL_REG,
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.mode_mask = AS3722_SD5_MODE_FAST,
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.n_voltages = AS3722_SD2_VSEL_MAX + 1,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_SD6,
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.name = "as3722-sd6",
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.vsel_reg = AS3722_SD6_VOLTAGE_REG,
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.vsel_mask = AS3722_SD_VSEL_MASK,
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.enable_reg = AS3722_SD_CONTROL_REG,
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.enable_mask = AS3722_SDn_CTRL(6),
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
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.sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK,
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.control_reg = AS3722_SD6_CONTROL_REG,
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.mode_mask = AS3722_SD6_MODE_FAST,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO0,
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.name = "as3722-ldo0",
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.sname = "vin-ldo0",
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.vsel_reg = AS3722_LDO0_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO0_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO0_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
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.sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO0_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO1,
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.name = "as3722-ldo1",
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.sname = "vin-ldo1-6",
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.vsel_reg = AS3722_LDO1_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO1_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
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.sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO2,
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.name = "as3722-ldo2",
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.sname = "vin-ldo2-5-7",
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.vsel_reg = AS3722_LDO2_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO2_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
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.sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO3,
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.name = "as3722-ldo3",
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.sname = "vin-ldo3-4",
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.vsel_reg = AS3722_LDO3_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO3_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO3_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
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.sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO3_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO4,
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.name = "as3722-ldo4",
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.sname = "vin-ldo3-4",
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.vsel_reg = AS3722_LDO4_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO4_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
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.sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO5,
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.name = "as3722-ldo5",
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.sname = "vin-ldo2-5-7",
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.vsel_reg = AS3722_LDO5_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO5_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
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.sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO6,
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.name = "as3722-ldo6",
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.sname = "vin-ldo1-6",
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.vsel_reg = AS3722_LDO6_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO6_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
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.sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO7,
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.name = "as3722-ldo7",
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.sname = "vin-ldo2-5-7",
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.vsel_reg = AS3722_LDO7_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL0_REG,
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.enable_mask = AS3722_LDO7_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
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.sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO9,
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.name = "as3722-ldo9",
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.sname = "vin-ldo9-10",
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.vsel_reg = AS3722_LDO9_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL1_REG,
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.enable_mask = AS3722_LDO9_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
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.sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO10,
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.name = "as3722-ldo10",
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.sname = "vin-ldo9-10",
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.vsel_reg = AS3722_LDO10_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL1_REG,
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.enable_mask = AS3722_LDO10_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
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.sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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{
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.regulator_id = AS3722_REGULATOR_ID_LDO11,
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.name = "as3722-ldo11",
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.sname = "vin-ldo11",
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.vsel_reg = AS3722_LDO11_VOLTAGE_REG,
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.vsel_mask = AS3722_LDO_VSEL_MASK,
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.enable_reg = AS3722_LDOCONTROL1_REG,
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.enable_mask = AS3722_LDO11_CTRL,
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.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
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.sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK,
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.n_voltages = AS3722_LDO_NUM_VOLT,
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},
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};
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static const int as3722_ldo_current[] = { 150000, 300000 };
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static const int as3722_sd016_current[] = { 2500000, 3000000, 3500000 };
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static int as3722_current_to_index(int min_uA, int max_uA,
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const int *curr_table, int n_currents)
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{
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int i;
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for (i = n_currents - 1; i >= 0; i--) {
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if ((min_uA <= curr_table[i]) && (curr_table[i] <= max_uA))
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return i;
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}
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return -EINVAL;
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}
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static int as3722_ldo_get_current_limit(struct regulator_dev *rdev)
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{
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struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
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struct as3722 *as3722 = as3722_regs->as3722;
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int id = rdev_get_id(rdev);
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u32 val;
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int ret;
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ret = as3722_read(as3722, as3722_reg_lookup[id].vsel_reg, &val);
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if (ret < 0) {
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dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
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as3722_reg_lookup[id].vsel_reg, ret);
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return ret;
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}
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if (val & AS3722_LDO_ILIMIT_MASK)
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return 300000;
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return 150000;
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}
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static int as3722_ldo_set_current_limit(struct regulator_dev *rdev,
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int min_uA, int max_uA)
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{
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struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
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struct as3722 *as3722 = as3722_regs->as3722;
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int id = rdev_get_id(rdev);
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int ret;
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u32 reg = 0;
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ret = as3722_current_to_index(min_uA, max_uA, as3722_ldo_current,
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ARRAY_SIZE(as3722_ldo_current));
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if (ret < 0) {
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dev_err(as3722_regs->dev,
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"Current range min:max = %d:%d does not support\n",
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min_uA, max_uA);
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return ret;
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}
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if (ret)
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reg = AS3722_LDO_ILIMIT_BIT;
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return as3722_update_bits(as3722, as3722_reg_lookup[id].vsel_reg,
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AS3722_LDO_ILIMIT_MASK, reg);
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}
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static const struct regulator_ops as3722_ldo0_ops = {
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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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.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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.get_current_limit = as3722_ldo_get_current_limit,
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.set_current_limit = as3722_ldo_set_current_limit,
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};
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static const struct regulator_ops as3722_ldo0_extcntrl_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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.get_current_limit = as3722_ldo_get_current_limit,
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.set_current_limit = as3722_ldo_set_current_limit,
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};
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static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg,
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int id, u8 mode)
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{
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struct as3722 *as3722 = as3722_reg->as3722;
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switch (mode) {
|
|
case AS3722_LDO3_MODE_PMOS:
|
|
case AS3722_LDO3_MODE_PMOS_TRACKING:
|
|
case AS3722_LDO3_MODE_NMOS:
|
|
case AS3722_LDO3_MODE_SWITCH:
|
|
return as3722_update_bits(as3722,
|
|
as3722_reg_lookup[id].vsel_reg,
|
|
AS3722_LDO3_MODE_MASK, mode);
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev)
|
|
{
|
|
return 150000;
|
|
}
|
|
|
|
static const struct regulator_ops as3722_ldo3_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_current_limit = as3722_ldo3_get_current_limit,
|
|
};
|
|
|
|
static const struct regulator_ops as3722_ldo3_extcntrl_ops = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_current_limit = as3722_ldo3_get_current_limit,
|
|
};
|
|
|
|
static const struct regulator_ops as3722_ldo6_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.get_current_limit = as3722_ldo_get_current_limit,
|
|
.set_current_limit = as3722_ldo_set_current_limit,
|
|
.get_bypass = regulator_get_bypass_regmap,
|
|
.set_bypass = regulator_set_bypass_regmap,
|
|
};
|
|
|
|
static const struct regulator_ops as3722_ldo6_extcntrl_ops = {
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.get_current_limit = as3722_ldo_get_current_limit,
|
|
.set_current_limit = as3722_ldo_set_current_limit,
|
|
.get_bypass = regulator_get_bypass_regmap,
|
|
.set_bypass = regulator_set_bypass_regmap,
|
|
};
|
|
|
|
static const struct regulator_linear_range as3722_ldo_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
|
|
REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000),
|
|
REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000),
|
|
};
|
|
|
|
static const struct regulator_ops as3722_ldo_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.get_current_limit = as3722_ldo_get_current_limit,
|
|
.set_current_limit = as3722_ldo_set_current_limit,
|
|
};
|
|
|
|
static const struct regulator_ops as3722_ldo_extcntrl_ops = {
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.get_current_limit = as3722_ldo_get_current_limit,
|
|
.set_current_limit = as3722_ldo_set_current_limit,
|
|
};
|
|
|
|
static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev)
|
|
{
|
|
struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
|
|
struct as3722 *as3722 = as3722_regs->as3722;
|
|
int id = rdev_get_id(rdev);
|
|
u32 val;
|
|
int ret;
|
|
|
|
if (!as3722_reg_lookup[id].control_reg)
|
|
return -ENOTSUPP;
|
|
|
|
ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val);
|
|
if (ret < 0) {
|
|
dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
|
|
as3722_reg_lookup[id].control_reg, ret);
|
|
return ret;
|
|
}
|
|
|
|
if (val & as3722_reg_lookup[id].mode_mask)
|
|
return REGULATOR_MODE_FAST;
|
|
else
|
|
return REGULATOR_MODE_NORMAL;
|
|
}
|
|
|
|
static int as3722_sd_set_mode(struct regulator_dev *rdev,
|
|
unsigned int mode)
|
|
{
|
|
struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
|
|
struct as3722 *as3722 = as3722_regs->as3722;
|
|
u8 id = rdev_get_id(rdev);
|
|
u8 val = 0;
|
|
int ret;
|
|
|
|
if (!as3722_reg_lookup[id].control_reg)
|
|
return -ERANGE;
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_FAST:
|
|
val = as3722_reg_lookup[id].mode_mask;
|
|
case REGULATOR_MODE_NORMAL: /* fall down */
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg,
|
|
as3722_reg_lookup[id].mode_mask, val);
|
|
if (ret < 0) {
|
|
dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
|
|
as3722_reg_lookup[id].control_reg, ret);
|
|
return ret;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int as3722_sd016_get_current_limit(struct regulator_dev *rdev)
|
|
{
|
|
struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
|
|
struct as3722 *as3722 = as3722_regs->as3722;
|
|
int id = rdev_get_id(rdev);
|
|
u32 val, reg;
|
|
int mask;
|
|
int ret;
|
|
|
|
switch (id) {
|
|
case AS3722_REGULATOR_ID_SD0:
|
|
reg = AS3722_OVCURRENT_REG;
|
|
mask = AS3722_OVCURRENT_SD0_TRIP_MASK;
|
|
break;
|
|
case AS3722_REGULATOR_ID_SD1:
|
|
reg = AS3722_OVCURRENT_REG;
|
|
mask = AS3722_OVCURRENT_SD1_TRIP_MASK;
|
|
break;
|
|
case AS3722_REGULATOR_ID_SD6:
|
|
reg = AS3722_OVCURRENT_DEB_REG;
|
|
mask = AS3722_OVCURRENT_SD6_TRIP_MASK;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
ret = as3722_read(as3722, reg, &val);
|
|
if (ret < 0) {
|
|
dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
|
|
reg, ret);
|
|
return ret;
|
|
}
|
|
val &= mask;
|
|
val >>= ffs(mask) - 1;
|
|
if (val == 3)
|
|
return -EINVAL;
|
|
return as3722_sd016_current[val];
|
|
}
|
|
|
|
static int as3722_sd016_set_current_limit(struct regulator_dev *rdev,
|
|
int min_uA, int max_uA)
|
|
{
|
|
struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
|
|
struct as3722 *as3722 = as3722_regs->as3722;
|
|
int id = rdev_get_id(rdev);
|
|
int ret;
|
|
int val;
|
|
int mask;
|
|
u32 reg;
|
|
|
|
ret = as3722_current_to_index(min_uA, max_uA, as3722_sd016_current,
|
|
ARRAY_SIZE(as3722_sd016_current));
|
|
if (ret < 0) {
|
|
dev_err(as3722_regs->dev,
|
|
"Current range min:max = %d:%d does not support\n",
|
|
min_uA, max_uA);
|
|
return ret;
|
|
}
|
|
|
|
switch (id) {
|
|
case AS3722_REGULATOR_ID_SD0:
|
|
reg = AS3722_OVCURRENT_REG;
|
|
mask = AS3722_OVCURRENT_SD0_TRIP_MASK;
|
|
break;
|
|
case AS3722_REGULATOR_ID_SD1:
|
|
reg = AS3722_OVCURRENT_REG;
|
|
mask = AS3722_OVCURRENT_SD1_TRIP_MASK;
|
|
break;
|
|
case AS3722_REGULATOR_ID_SD6:
|
|
reg = AS3722_OVCURRENT_DEB_REG;
|
|
mask = AS3722_OVCURRENT_SD6_TRIP_MASK;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
ret <<= ffs(mask) - 1;
|
|
val = ret & mask;
|
|
return as3722_update_bits(as3722, reg, mask, val);
|
|
}
|
|
|
|
static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs)
|
|
{
|
|
int err;
|
|
unsigned val;
|
|
|
|
err = as3722_read(as3722_regs->as3722, AS3722_FUSE7_REG, &val);
|
|
if (err < 0) {
|
|
dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
|
|
AS3722_FUSE7_REG, err);
|
|
return false;
|
|
}
|
|
if (val & AS3722_FUSE7_SD0_LOW_VOLTAGE)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static const struct regulator_linear_range as3722_sd2345_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
|
|
REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500),
|
|
REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
|
|
REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000),
|
|
};
|
|
|
|
static const struct regulator_ops as3722_sd016_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_current_limit = as3722_sd016_get_current_limit,
|
|
.set_current_limit = as3722_sd016_set_current_limit,
|
|
.get_mode = as3722_sd_get_mode,
|
|
.set_mode = as3722_sd_set_mode,
|
|
};
|
|
|
|
static const struct regulator_ops as3722_sd016_extcntrl_ops = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_current_limit = as3722_sd016_get_current_limit,
|
|
.set_current_limit = as3722_sd016_set_current_limit,
|
|
.get_mode = as3722_sd_get_mode,
|
|
.set_mode = as3722_sd_set_mode,
|
|
};
|
|
|
|
static const struct regulator_ops as3722_sd2345_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.get_mode = as3722_sd_get_mode,
|
|
.set_mode = as3722_sd_set_mode,
|
|
};
|
|
|
|
static const struct regulator_ops as3722_sd2345_extcntrl_ops = {
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.get_mode = as3722_sd_get_mode,
|
|
.set_mode = as3722_sd_set_mode,
|
|
};
|
|
|
|
static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id,
|
|
int ext_pwr_ctrl)
|
|
{
|
|
int ret;
|
|
unsigned int val;
|
|
|
|
if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) ||
|
|
(ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3))
|
|
return -EINVAL;
|
|
|
|
val = ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1);
|
|
ret = as3722_update_bits(as3722_regs->as3722,
|
|
as3722_reg_lookup[id].sleep_ctrl_reg,
|
|
as3722_reg_lookup[id].sleep_ctrl_mask, val);
|
|
if (ret < 0)
|
|
dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
|
|
as3722_reg_lookup[id].sleep_ctrl_reg, ret);
|
|
return ret;
|
|
}
|
|
|
|
static struct of_regulator_match as3722_regulator_matches[] = {
|
|
{ .name = "sd0", },
|
|
{ .name = "sd1", },
|
|
{ .name = "sd2", },
|
|
{ .name = "sd3", },
|
|
{ .name = "sd4", },
|
|
{ .name = "sd5", },
|
|
{ .name = "sd6", },
|
|
{ .name = "ldo0", },
|
|
{ .name = "ldo1", },
|
|
{ .name = "ldo2", },
|
|
{ .name = "ldo3", },
|
|
{ .name = "ldo4", },
|
|
{ .name = "ldo5", },
|
|
{ .name = "ldo6", },
|
|
{ .name = "ldo7", },
|
|
{ .name = "ldo9", },
|
|
{ .name = "ldo10", },
|
|
{ .name = "ldo11", },
|
|
};
|
|
|
|
static int as3722_get_regulator_dt_data(struct platform_device *pdev,
|
|
struct as3722_regulators *as3722_regs)
|
|
{
|
|
struct device_node *np;
|
|
struct as3722_regulator_config_data *reg_config;
|
|
u32 prop;
|
|
int id;
|
|
int ret;
|
|
|
|
np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
|
|
if (!np) {
|
|
dev_err(&pdev->dev, "Device is not having regulators node\n");
|
|
return -ENODEV;
|
|
}
|
|
pdev->dev.of_node = np;
|
|
|
|
ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches,
|
|
ARRAY_SIZE(as3722_regulator_matches));
|
|
of_node_put(np);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) {
|
|
struct device_node *reg_node;
|
|
|
|
reg_config = &as3722_regs->reg_config_data[id];
|
|
reg_config->reg_init = as3722_regulator_matches[id].init_data;
|
|
reg_node = as3722_regulator_matches[id].of_node;
|
|
|
|
if (!reg_config->reg_init || !reg_node)
|
|
continue;
|
|
|
|
ret = of_property_read_u32(reg_node, "ams,ext-control", &prop);
|
|
if (!ret) {
|
|
if (prop < 3)
|
|
reg_config->ext_control = prop;
|
|
else
|
|
dev_warn(&pdev->dev,
|
|
"ext-control have invalid option: %u\n",
|
|
prop);
|
|
}
|
|
reg_config->enable_tracking =
|
|
of_property_read_bool(reg_node, "ams,enable-tracking");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int as3722_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
|
|
struct as3722_regulators *as3722_regs;
|
|
struct as3722_regulator_config_data *reg_config;
|
|
struct regulator_dev *rdev;
|
|
struct regulator_config config = { };
|
|
const struct regulator_ops *ops;
|
|
int id;
|
|
int ret;
|
|
|
|
as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs),
|
|
GFP_KERNEL);
|
|
if (!as3722_regs)
|
|
return -ENOMEM;
|
|
|
|
as3722_regs->dev = &pdev->dev;
|
|
as3722_regs->as3722 = as3722;
|
|
platform_set_drvdata(pdev, as3722_regs);
|
|
|
|
ret = as3722_get_regulator_dt_data(pdev, as3722_regs);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
config.dev = &pdev->dev;
|
|
config.driver_data = as3722_regs;
|
|
config.regmap = as3722->regmap;
|
|
|
|
for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
|
|
reg_config = &as3722_regs->reg_config_data[id];
|
|
|
|
as3722_regs->desc[id].name = as3722_reg_lookup[id].name;
|
|
as3722_regs->desc[id].supply_name = as3722_reg_lookup[id].sname;
|
|
as3722_regs->desc[id].id = as3722_reg_lookup[id].regulator_id;
|
|
as3722_regs->desc[id].n_voltages =
|
|
as3722_reg_lookup[id].n_voltages;
|
|
as3722_regs->desc[id].type = REGULATOR_VOLTAGE;
|
|
as3722_regs->desc[id].owner = THIS_MODULE;
|
|
as3722_regs->desc[id].enable_reg =
|
|
as3722_reg_lookup[id].enable_reg;
|
|
as3722_regs->desc[id].enable_mask =
|
|
as3722_reg_lookup[id].enable_mask;
|
|
as3722_regs->desc[id].vsel_reg = as3722_reg_lookup[id].vsel_reg;
|
|
as3722_regs->desc[id].vsel_mask =
|
|
as3722_reg_lookup[id].vsel_mask;
|
|
switch (id) {
|
|
case AS3722_REGULATOR_ID_LDO0:
|
|
if (reg_config->ext_control)
|
|
ops = &as3722_ldo0_extcntrl_ops;
|
|
else
|
|
ops = &as3722_ldo0_ops;
|
|
as3722_regs->desc[id].min_uV = 825000;
|
|
as3722_regs->desc[id].uV_step = 25000;
|
|
as3722_regs->desc[id].linear_min_sel = 1;
|
|
as3722_regs->desc[id].enable_time = 500;
|
|
break;
|
|
case AS3722_REGULATOR_ID_LDO3:
|
|
if (reg_config->ext_control)
|
|
ops = &as3722_ldo3_extcntrl_ops;
|
|
else
|
|
ops = &as3722_ldo3_ops;
|
|
as3722_regs->desc[id].min_uV = 620000;
|
|
as3722_regs->desc[id].uV_step = 20000;
|
|
as3722_regs->desc[id].linear_min_sel = 1;
|
|
as3722_regs->desc[id].enable_time = 500;
|
|
if (reg_config->enable_tracking) {
|
|
ret = as3722_ldo3_set_tracking_mode(as3722_regs,
|
|
id, AS3722_LDO3_MODE_PMOS_TRACKING);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev,
|
|
"LDO3 tracking failed: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
}
|
|
break;
|
|
case AS3722_REGULATOR_ID_LDO6:
|
|
if (reg_config->ext_control)
|
|
ops = &as3722_ldo6_extcntrl_ops;
|
|
else
|
|
ops = &as3722_ldo6_ops;
|
|
as3722_regs->desc[id].enable_time = 500;
|
|
as3722_regs->desc[id].bypass_reg =
|
|
AS3722_LDO6_VOLTAGE_REG;
|
|
as3722_regs->desc[id].bypass_mask =
|
|
AS3722_LDO_VSEL_MASK;
|
|
as3722_regs->desc[id].bypass_val_on =
|
|
AS3722_LDO6_VSEL_BYPASS;
|
|
as3722_regs->desc[id].bypass_val_off =
|
|
AS3722_LDO6_VSEL_BYPASS;
|
|
as3722_regs->desc[id].linear_ranges = as3722_ldo_ranges;
|
|
as3722_regs->desc[id].n_linear_ranges =
|
|
ARRAY_SIZE(as3722_ldo_ranges);
|
|
break;
|
|
case AS3722_REGULATOR_ID_SD0:
|
|
case AS3722_REGULATOR_ID_SD1:
|
|
case AS3722_REGULATOR_ID_SD6:
|
|
if (reg_config->ext_control)
|
|
ops = &as3722_sd016_extcntrl_ops;
|
|
else
|
|
ops = &as3722_sd016_ops;
|
|
if (id == AS3722_REGULATOR_ID_SD0 &&
|
|
as3722_sd0_is_low_voltage(as3722_regs)) {
|
|
as3722_regs->desc[id].n_voltages =
|
|
AS3722_SD0_VSEL_LOW_VOL_MAX + 1;
|
|
as3722_regs->desc[id].min_uV = 410000;
|
|
} else {
|
|
as3722_regs->desc[id].n_voltages =
|
|
AS3722_SD0_VSEL_MAX + 1,
|
|
as3722_regs->desc[id].min_uV = 610000;
|
|
}
|
|
as3722_regs->desc[id].uV_step = 10000;
|
|
as3722_regs->desc[id].linear_min_sel = 1;
|
|
as3722_regs->desc[id].enable_time = 600;
|
|
break;
|
|
case AS3722_REGULATOR_ID_SD2:
|
|
case AS3722_REGULATOR_ID_SD3:
|
|
case AS3722_REGULATOR_ID_SD4:
|
|
case AS3722_REGULATOR_ID_SD5:
|
|
if (reg_config->ext_control)
|
|
ops = &as3722_sd2345_extcntrl_ops;
|
|
else
|
|
ops = &as3722_sd2345_ops;
|
|
as3722_regs->desc[id].linear_ranges =
|
|
as3722_sd2345_ranges;
|
|
as3722_regs->desc[id].n_linear_ranges =
|
|
ARRAY_SIZE(as3722_sd2345_ranges);
|
|
break;
|
|
default:
|
|
if (reg_config->ext_control)
|
|
ops = &as3722_ldo_extcntrl_ops;
|
|
else
|
|
ops = &as3722_ldo_ops;
|
|
as3722_regs->desc[id].enable_time = 500;
|
|
as3722_regs->desc[id].linear_ranges = as3722_ldo_ranges;
|
|
as3722_regs->desc[id].n_linear_ranges =
|
|
ARRAY_SIZE(as3722_ldo_ranges);
|
|
break;
|
|
}
|
|
as3722_regs->desc[id].ops = ops;
|
|
config.init_data = reg_config->reg_init;
|
|
config.of_node = as3722_regulator_matches[id].of_node;
|
|
rdev = devm_regulator_register(&pdev->dev,
|
|
&as3722_regs->desc[id], &config);
|
|
if (IS_ERR(rdev)) {
|
|
ret = PTR_ERR(rdev);
|
|
dev_err(&pdev->dev, "regulator %d register failed %d\n",
|
|
id, ret);
|
|
return ret;
|
|
}
|
|
|
|
as3722_regs->rdevs[id] = rdev;
|
|
if (reg_config->ext_control) {
|
|
ret = regulator_enable_regmap(rdev);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev,
|
|
"Regulator %d enable failed: %d\n",
|
|
id, ret);
|
|
return ret;
|
|
}
|
|
ret = as3722_extreg_init(as3722_regs, id,
|
|
reg_config->ext_control);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev,
|
|
"AS3722 ext control failed: %d", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id of_as3722_regulator_match[] = {
|
|
{ .compatible = "ams,as3722-regulator", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, of_as3722_regulator_match);
|
|
|
|
static struct platform_driver as3722_regulator_driver = {
|
|
.driver = {
|
|
.name = "as3722-regulator",
|
|
.of_match_table = of_as3722_regulator_match,
|
|
},
|
|
.probe = as3722_regulator_probe,
|
|
};
|
|
|
|
module_platform_driver(as3722_regulator_driver);
|
|
|
|
MODULE_ALIAS("platform:as3722-regulator");
|
|
MODULE_DESCRIPTION("AS3722 regulator driver");
|
|
MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
|
|
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
|
|
MODULE_LICENSE("GPL");
|