mirror of https://gitee.com/openkylin/linux.git
regulator: Add S5M8767A regulator driver
S5M8767A is a cost-effective PMIC which is designed for mobile applications. It includes high efficient 9 Buck converters, 28 LDOs. Especially, S5M8767A is optimized for Multi-core SOCs. And during DVFS operation, S5M8767A output stable voltage. This patch implement regulator driver for S5M8767A. Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Sangbeom Kim
Mark Brown
parent
6219929f5f
commit
9767ec7fe8
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@ -0,0 +1,834 @@
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/*
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* s5m8767.c
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd
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* http://www.samsung.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/bug.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/gpio.h>
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#include <linux/slab.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/mfd/s5m87xx/s5m-core.h>
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#include <linux/mfd/s5m87xx/s5m-pmic.h>
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struct s5m8767_info {
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struct device *dev;
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struct s5m87xx_dev *iodev;
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int num_regulators;
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struct regulator_dev **rdev;
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int ramp_delay;
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bool buck2_ramp;
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bool buck3_ramp;
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bool buck4_ramp;
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bool buck2_gpiodvs;
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bool buck3_gpiodvs;
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bool buck4_gpiodvs;
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u8 buck2_vol[8];
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u8 buck3_vol[8];
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u8 buck4_vol[8];
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int buck_gpios[3];
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int buck_gpioindex;
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};
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struct s5m_voltage_desc {
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int max;
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int min;
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int step;
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};
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static const struct s5m_voltage_desc buck_voltage_val1 = {
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.max = 2225000,
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.min = 650000,
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.step = 6250,
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};
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static const struct s5m_voltage_desc buck_voltage_val2 = {
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.max = 1600000,
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.min = 600000,
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.step = 6250,
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};
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static const struct s5m_voltage_desc buck_voltage_val3 = {
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.max = 3000000,
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.min = 750000,
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.step = 12500,
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};
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static const struct s5m_voltage_desc ldo_voltage_val1 = {
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.max = 3950000,
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.min = 800000,
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.step = 50000,
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};
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static const struct s5m_voltage_desc ldo_voltage_val2 = {
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.max = 2375000,
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.min = 800000,
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.step = 25000,
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};
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static const struct s5m_voltage_desc *reg_voltage_map[] = {
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[S5M8767_LDO1] = &ldo_voltage_val2,
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[S5M8767_LDO2] = &ldo_voltage_val2,
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[S5M8767_LDO3] = &ldo_voltage_val1,
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[S5M8767_LDO4] = &ldo_voltage_val1,
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[S5M8767_LDO5] = &ldo_voltage_val1,
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[S5M8767_LDO6] = &ldo_voltage_val2,
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[S5M8767_LDO7] = &ldo_voltage_val2,
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[S5M8767_LDO8] = &ldo_voltage_val2,
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[S5M8767_LDO9] = &ldo_voltage_val1,
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[S5M8767_LDO10] = &ldo_voltage_val1,
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[S5M8767_LDO11] = &ldo_voltage_val1,
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[S5M8767_LDO12] = &ldo_voltage_val1,
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[S5M8767_LDO13] = &ldo_voltage_val1,
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[S5M8767_LDO14] = &ldo_voltage_val1,
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[S5M8767_LDO15] = &ldo_voltage_val2,
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[S5M8767_LDO16] = &ldo_voltage_val1,
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[S5M8767_LDO17] = &ldo_voltage_val1,
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[S5M8767_LDO18] = &ldo_voltage_val1,
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[S5M8767_LDO19] = &ldo_voltage_val1,
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[S5M8767_LDO20] = &ldo_voltage_val1,
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[S5M8767_LDO21] = &ldo_voltage_val1,
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[S5M8767_LDO22] = &ldo_voltage_val1,
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[S5M8767_LDO23] = &ldo_voltage_val1,
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[S5M8767_LDO24] = &ldo_voltage_val1,
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[S5M8767_LDO25] = &ldo_voltage_val1,
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[S5M8767_LDO26] = &ldo_voltage_val1,
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[S5M8767_LDO27] = &ldo_voltage_val1,
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[S5M8767_LDO28] = &ldo_voltage_val1,
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[S5M8767_BUCK1] = &buck_voltage_val1,
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[S5M8767_BUCK2] = &buck_voltage_val2,
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[S5M8767_BUCK3] = &buck_voltage_val2,
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[S5M8767_BUCK4] = &buck_voltage_val2,
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[S5M8767_BUCK5] = &buck_voltage_val1,
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[S5M8767_BUCK6] = &buck_voltage_val1,
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[S5M8767_BUCK7] = NULL,
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[S5M8767_BUCK8] = NULL,
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[S5M8767_BUCK9] = &buck_voltage_val3,
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};
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static inline int s5m8767_get_reg_id(struct regulator_dev *rdev)
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{
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return rdev_get_id(rdev);
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}
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static int s5m8767_list_voltage(struct regulator_dev *rdev,
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unsigned int selector)
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{
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const struct s5m_voltage_desc *desc;
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int reg_id = s5m8767_get_reg_id(rdev);
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int val;
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if (reg_id >= ARRAY_SIZE(reg_voltage_map) || reg_id < 0)
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return -EINVAL;
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desc = reg_voltage_map[reg_id];
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if (desc == NULL)
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return -EINVAL;
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val = desc->min + desc->step * selector;
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if (val > desc->max)
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return -EINVAL;
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return val;
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}
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static int s5m8767_get_register(struct regulator_dev *rdev, int *reg)
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{
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int reg_id = s5m8767_get_reg_id(rdev);
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switch (reg_id) {
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case S5M8767_LDO1 ... S5M8767_LDO2:
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*reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
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break;
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case S5M8767_LDO3 ... S5M8767_LDO28:
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*reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
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break;
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case S5M8767_BUCK1:
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*reg = S5M8767_REG_BUCK1CTRL1;
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break;
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case S5M8767_BUCK2 ... S5M8767_BUCK4:
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*reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9;
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break;
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case S5M8767_BUCK5:
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*reg = S5M8767_REG_BUCK5CTRL1;
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break;
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case S5M8767_BUCK6 ... S5M8767_BUCK9:
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*reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
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{
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struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
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int ret, reg;
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int mask = 0xc0, pattern = 0xc0;
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u8 val;
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ret = s5m8767_get_register(rdev, ®);
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if (ret == -EINVAL)
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return 1;
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else if (ret)
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return ret;
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ret = s5m_reg_read(s5m8767->iodev, reg, &val);
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if (ret)
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return ret;
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return (val & mask) == pattern;
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}
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static int s5m8767_reg_enable(struct regulator_dev *rdev)
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{
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struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
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int ret, reg;
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int mask = 0xc0, pattern = 0xc0;
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ret = s5m8767_get_register(rdev, ®);
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if (ret)
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return ret;
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return s5m_reg_update(s5m8767->iodev, reg, pattern, mask);
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}
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static int s5m8767_reg_disable(struct regulator_dev *rdev)
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{
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struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
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int ret, reg;
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int mask = 0xc0, pattern = 0xc0;
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ret = s5m8767_get_register(rdev, ®);
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if (ret)
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return ret;
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return s5m_reg_update(s5m8767->iodev, reg, ~pattern, mask);
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}
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static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
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{
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int reg_id = s5m8767_get_reg_id(rdev);
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int reg;
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switch (reg_id) {
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case S5M8767_LDO1 ... S5M8767_LDO2:
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reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
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break;
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case S5M8767_LDO3 ... S5M8767_LDO28:
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reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
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break;
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case S5M8767_BUCK1:
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reg = S5M8767_REG_BUCK1CTRL2;
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break;
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case S5M8767_BUCK2:
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reg = S5M8767_REG_BUCK2DVS1;
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break;
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case S5M8767_BUCK3:
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reg = S5M8767_REG_BUCK3DVS1;
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break;
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case S5M8767_BUCK4:
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reg = S5M8767_REG_BUCK4DVS1;
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break;
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case S5M8767_BUCK5:
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reg = S5M8767_REG_BUCK5CTRL2;
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break;
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case S5M8767_BUCK6 ... S5M8767_BUCK9:
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reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
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break;
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default:
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return -EINVAL;
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}
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*_reg = reg;
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return 0;
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}
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static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
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int reg, mask = 0xff, ret;
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int reg_id = s5m8767_get_reg_id(rdev);
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u8 val;
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ret = s5m8767_get_voltage_register(rdev, ®);
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if (ret)
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return ret;
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switch (reg_id) {
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case S5M8767_LDO1 ... S5M8767_LDO28:
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mask = 0x3f;
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break;
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case S5M8767_BUCK2:
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if (s5m8767->buck2_gpiodvs)
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reg += s5m8767->buck_gpioindex;
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break;
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case S5M8767_BUCK3:
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if (s5m8767->buck3_gpiodvs)
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reg += s5m8767->buck_gpioindex;
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break;
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case S5M8767_BUCK4:
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if (s5m8767->buck4_gpiodvs)
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reg += s5m8767->buck_gpioindex;
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break;
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}
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ret = s5m_reg_read(s5m8767->iodev, reg, &val);
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if (ret)
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return ret;
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val &= mask;
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return val;
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}
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static inline int s5m8767_convert_voltage(
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const struct s5m_voltage_desc *desc,
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int min_vol, int max_vol)
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{
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int out_vol = 0;
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if (desc == NULL)
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return -EINVAL;
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if (max_vol < desc->min || min_vol > desc->max)
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return -EINVAL;
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out_vol = (min_vol - desc->min) / desc->step;
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if (desc->min + desc->step * out_vol > max_vol)
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return -EINVAL;
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return out_vol;
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}
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static int s5m8767_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV, unsigned *selector)
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{
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struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
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int min_vol = min_uV, max_vol = max_uV;
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const struct s5m_voltage_desc *desc;
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int reg_id = s5m8767_get_reg_id(rdev);
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int reg, mask, ret;
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int i;
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u8 val;
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switch (reg_id) {
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case S5M8767_LDO1 ... S5M8767_LDO28:
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mask = 0x3f;
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break;
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case S5M8767_BUCK1 ... S5M8767_BUCK6:
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mask = 0xff;
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break;
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case S5M8767_BUCK7 ... S5M8767_BUCK8:
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return -EINVAL;
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case S5M8767_BUCK9:
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mask = 0xff;
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break;
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default:
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return -EINVAL;
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}
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desc = reg_voltage_map[reg_id];
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i = s5m8767_convert_voltage(desc, min_vol, max_vol);
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if (i < 0)
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return i;
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ret = s5m8767_get_voltage_register(rdev, ®);
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if (ret)
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return ret;
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s5m_reg_read(s5m8767->iodev, reg, &val);
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val = val & mask;
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ret = s5m_reg_write(s5m8767->iodev, reg, val);
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*selector = i;
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return ret;
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}
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static inline void s5m8767_set_high(struct s5m8767_info *s5m8767)
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{
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int temp_index = s5m8767->buck_gpioindex;
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gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
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gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
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gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
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}
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static inline void s5m8767_set_low(struct s5m8767_info *s5m8767)
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{
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int temp_index = s5m8767->buck_gpioindex;
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gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
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gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
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gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
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}
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static int s5m8767_set_voltage_buck(struct regulator_dev *rdev,
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int min_uV, int max_uV, unsigned *selector)
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{
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struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
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int reg_id = s5m8767_get_reg_id(rdev);
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const struct s5m_voltage_desc *desc;
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int new_val, old_val, i = 0;
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int min_vol = min_uV, max_vol = max_uV;
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if (reg_id < S5M8767_BUCK1 || reg_id > S5M8767_BUCK6)
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return -EINVAL;
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switch (reg_id) {
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case S5M8767_BUCK1:
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return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
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case S5M8767_BUCK2 ... S5M8767_BUCK4:
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break;
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case S5M8767_BUCK5 ... S5M8767_BUCK6:
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return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
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case S5M8767_BUCK9:
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return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
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}
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desc = reg_voltage_map[reg_id];
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new_val = s5m8767_convert_voltage(desc, min_vol, max_vol);
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if (new_val < 0)
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return new_val;
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switch (reg_id) {
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case S5M8767_BUCK2:
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if (s5m8767->buck2_gpiodvs) {
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while (s5m8767->buck2_vol[i] != new_val)
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i++;
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} else
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return s5m8767_set_voltage(rdev, min_uV,
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max_uV, selector);
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break;
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case S5M8767_BUCK3:
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if (s5m8767->buck3_gpiodvs) {
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while (s5m8767->buck3_vol[i] != new_val)
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i++;
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} else
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return s5m8767_set_voltage(rdev, min_uV,
|
||||
max_uV, selector);
|
||||
break;
|
||||
case S5M8767_BUCK4:
|
||||
if (s5m8767->buck3_gpiodvs) {
|
||||
while (s5m8767->buck4_vol[i] != new_val)
|
||||
i++;
|
||||
} else
|
||||
return s5m8767_set_voltage(rdev, min_uV,
|
||||
max_uV, selector);
|
||||
break;
|
||||
}
|
||||
|
||||
old_val = s5m8767->buck_gpioindex;
|
||||
s5m8767->buck_gpioindex = i;
|
||||
|
||||
if (i > old_val)
|
||||
s5m8767_set_high(s5m8767);
|
||||
else
|
||||
s5m8767_set_low(s5m8767);
|
||||
|
||||
*selector = new_val;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
|
||||
unsigned int old_sel,
|
||||
unsigned int new_sel)
|
||||
{
|
||||
struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
|
||||
const struct s5m_voltage_desc *desc;
|
||||
int reg_id = s5m8767_get_reg_id(rdev);
|
||||
int mask;
|
||||
int new_val, old_val;
|
||||
|
||||
switch (reg_id) {
|
||||
case S5M8767_LDO1 ... S5M8767_LDO28:
|
||||
mask = 0x3f;
|
||||
break;
|
||||
case S5M8767_BUCK1 ... S5M8767_BUCK6:
|
||||
mask = 0xff;
|
||||
break;
|
||||
case S5M8767_BUCK7 ... S5M8767_BUCK8:
|
||||
return -EINVAL;
|
||||
case S5M8767_BUCK9:
|
||||
mask = 0xff;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
desc = reg_voltage_map[reg_id];
|
||||
|
||||
new_val = s5m8767_convert_voltage(desc, new_sel, new_sel);
|
||||
if (new_val < 0)
|
||||
return new_val;
|
||||
|
||||
old_val = s5m8767_convert_voltage(desc, old_sel, old_sel);
|
||||
if (old_val < 0)
|
||||
return old_val;
|
||||
|
||||
if (old_sel < new_sel)
|
||||
return DIV_ROUND_UP(desc->step * (new_val - old_val),
|
||||
s5m8767->ramp_delay);
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct regulator_ops s5m8767_ldo_ops = {
|
||||
.list_voltage = s5m8767_list_voltage,
|
||||
.is_enabled = s5m8767_reg_is_enabled,
|
||||
.enable = s5m8767_reg_enable,
|
||||
.disable = s5m8767_reg_disable,
|
||||
.get_voltage_sel = s5m8767_get_voltage_sel,
|
||||
.set_voltage = s5m8767_set_voltage,
|
||||
.set_voltage_time_sel = s5m8767_set_voltage_time_sel,
|
||||
};
|
||||
|
||||
static struct regulator_ops s5m8767_buck_ops = {
|
||||
.list_voltage = s5m8767_list_voltage,
|
||||
.is_enabled = s5m8767_reg_is_enabled,
|
||||
.enable = s5m8767_reg_enable,
|
||||
.disable = s5m8767_reg_disable,
|
||||
.get_voltage_sel = s5m8767_get_voltage_sel,
|
||||
.set_voltage = s5m8767_set_voltage_buck,
|
||||
.set_voltage_time_sel = s5m8767_set_voltage_time_sel,
|
||||
};
|
||||
|
||||
#define regulator_desc_ldo(num) { \
|
||||
.name = "LDO"#num, \
|
||||
.id = S5M8767_LDO##num, \
|
||||
.ops = &s5m8767_ldo_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.owner = THIS_MODULE, \
|
||||
}
|
||||
#define regulator_desc_buck(num) { \
|
||||
.name = "BUCK"#num, \
|
||||
.id = S5M8767_BUCK##num, \
|
||||
.ops = &s5m8767_buck_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.owner = THIS_MODULE, \
|
||||
}
|
||||
|
||||
static struct regulator_desc regulators[] = {
|
||||
regulator_desc_ldo(1),
|
||||
regulator_desc_ldo(2),
|
||||
regulator_desc_ldo(3),
|
||||
regulator_desc_ldo(4),
|
||||
regulator_desc_ldo(5),
|
||||
regulator_desc_ldo(6),
|
||||
regulator_desc_ldo(7),
|
||||
regulator_desc_ldo(8),
|
||||
regulator_desc_ldo(9),
|
||||
regulator_desc_ldo(10),
|
||||
regulator_desc_ldo(11),
|
||||
regulator_desc_ldo(12),
|
||||
regulator_desc_ldo(13),
|
||||
regulator_desc_ldo(14),
|
||||
regulator_desc_ldo(15),
|
||||
regulator_desc_ldo(16),
|
||||
regulator_desc_ldo(17),
|
||||
regulator_desc_ldo(18),
|
||||
regulator_desc_ldo(19),
|
||||
regulator_desc_ldo(20),
|
||||
regulator_desc_ldo(21),
|
||||
regulator_desc_ldo(22),
|
||||
regulator_desc_ldo(23),
|
||||
regulator_desc_ldo(24),
|
||||
regulator_desc_ldo(25),
|
||||
regulator_desc_ldo(26),
|
||||
regulator_desc_ldo(27),
|
||||
regulator_desc_ldo(28),
|
||||
regulator_desc_buck(1),
|
||||
regulator_desc_buck(2),
|
||||
regulator_desc_buck(3),
|
||||
regulator_desc_buck(4),
|
||||
regulator_desc_buck(5),
|
||||
regulator_desc_buck(6),
|
||||
regulator_desc_buck(7),
|
||||
regulator_desc_buck(8),
|
||||
regulator_desc_buck(9),
|
||||
};
|
||||
|
||||
static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct s5m87xx_dev *iodev = dev_get_drvdata(pdev->dev.parent);
|
||||
struct s5m_platform_data *pdata = dev_get_platdata(iodev->dev);
|
||||
struct regulator_dev **rdev;
|
||||
struct s5m8767_info *s5m8767;
|
||||
struct i2c_client *i2c;
|
||||
int i, ret, size, reg;
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(pdev->dev.parent, "Platform data not supplied\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
|
||||
GFP_KERNEL);
|
||||
if (!s5m8767)
|
||||
return -ENOMEM;
|
||||
|
||||
size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
|
||||
s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
|
||||
if (!s5m8767->rdev)
|
||||
return -ENOMEM;
|
||||
|
||||
rdev = s5m8767->rdev;
|
||||
s5m8767->dev = &pdev->dev;
|
||||
s5m8767->iodev = iodev;
|
||||
s5m8767->num_regulators = S5M8767_REG_MAX - 2;
|
||||
platform_set_drvdata(pdev, s5m8767);
|
||||
i2c = s5m8767->iodev->i2c;
|
||||
|
||||
s5m8767->buck_gpioindex = pdata->buck_default_idx;
|
||||
s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
|
||||
s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
|
||||
s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
|
||||
s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
|
||||
s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
|
||||
s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
|
||||
s5m8767->ramp_delay = pdata->buck_ramp_delay;
|
||||
s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
|
||||
s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
|
||||
s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
|
||||
|
||||
for (i = 0; i < 8; i++) {
|
||||
if (s5m8767->buck2_gpiodvs) {
|
||||
s5m8767->buck2_vol[i] =
|
||||
s5m8767_convert_voltage(
|
||||
&buck_voltage_val2,
|
||||
pdata->buck2_voltage[i],
|
||||
pdata->buck2_voltage[i] +
|
||||
buck_voltage_val2.step);
|
||||
}
|
||||
|
||||
if (s5m8767->buck3_gpiodvs) {
|
||||
s5m8767->buck3_vol[i] =
|
||||
s5m8767_convert_voltage(
|
||||
&buck_voltage_val2,
|
||||
pdata->buck3_voltage[i],
|
||||
pdata->buck3_voltage[i] +
|
||||
buck_voltage_val2.step);
|
||||
}
|
||||
|
||||
if (s5m8767->buck4_gpiodvs) {
|
||||
s5m8767->buck4_vol[i] =
|
||||
s5m8767_convert_voltage(
|
||||
&buck_voltage_val2,
|
||||
pdata->buck4_voltage[i],
|
||||
pdata->buck4_voltage[i] +
|
||||
buck_voltage_val2.step);
|
||||
}
|
||||
}
|
||||
|
||||
if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
|
||||
pdata->buck4_gpiodvs) {
|
||||
if (gpio_is_valid(pdata->buck_gpios[0]) &&
|
||||
gpio_is_valid(pdata->buck_gpios[1]) &&
|
||||
gpio_is_valid(pdata->buck_gpios[2])) {
|
||||
ret = gpio_request(pdata->buck_gpios[0],
|
||||
"S5M8767 SET1");
|
||||
if (ret == -EBUSY)
|
||||
dev_warn(&pdev->dev, "Duplicated gpio request for SET1\n");
|
||||
|
||||
ret = gpio_request(pdata->buck_gpios[1],
|
||||
"S5M8767 SET2");
|
||||
if (ret == -EBUSY)
|
||||
dev_warn(&pdev->dev, "Duplicated gpio request for SET2\n");
|
||||
|
||||
ret = gpio_request(pdata->buck_gpios[2],
|
||||
"S5M8767 SET3");
|
||||
if (ret == -EBUSY)
|
||||
dev_warn(&pdev->dev, "Duplicated gpio request for SET3\n");
|
||||
/* SET1 GPIO */
|
||||
gpio_direction_output(pdata->buck_gpios[0],
|
||||
(s5m8767->buck_gpioindex >> 2) & 0x1);
|
||||
/* SET2 GPIO */
|
||||
gpio_direction_output(pdata->buck_gpios[1],
|
||||
(s5m8767->buck_gpioindex >> 1) & 0x1);
|
||||
/* SET3 GPIO */
|
||||
gpio_direction_output(pdata->buck_gpios[2],
|
||||
(s5m8767->buck_gpioindex >> 0) & 0x1);
|
||||
ret = 0;
|
||||
} else {
|
||||
dev_err(&pdev->dev, "GPIO NOT VALID\n");
|
||||
ret = -EINVAL;
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
if (pdata->buck2_gpiodvs) {
|
||||
if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
|
||||
dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
|
||||
ret = -EINVAL;
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
if (pdata->buck3_gpiodvs) {
|
||||
if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
|
||||
dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
|
||||
ret = -EINVAL;
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
if (pdata->buck4_gpiodvs) {
|
||||
if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
|
||||
dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
|
||||
ret = -EINVAL;
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL,
|
||||
(pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL,
|
||||
(pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL,
|
||||
(pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
|
||||
|
||||
/* Initialize GPIO DVS registers */
|
||||
for (i = 0; i < 8; i++) {
|
||||
if (s5m8767->buck2_gpiodvs) {
|
||||
s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i,
|
||||
s5m8767->buck2_vol[i]);
|
||||
}
|
||||
|
||||
if (s5m8767->buck3_gpiodvs) {
|
||||
s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i,
|
||||
s5m8767->buck3_vol[i]);
|
||||
}
|
||||
|
||||
if (s5m8767->buck4_gpiodvs) {
|
||||
s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i,
|
||||
s5m8767->buck4_vol[i]);
|
||||
}
|
||||
}
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, 0x78, 0xff);
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, 0x58, 0xff);
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, 0x78, 0xff);
|
||||
|
||||
if (s5m8767->buck2_ramp)
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08);
|
||||
|
||||
if (s5m8767->buck3_ramp)
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04);
|
||||
|
||||
if (s5m8767->buck4_ramp)
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02);
|
||||
|
||||
if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
|
||||
|| s5m8767->buck4_ramp) {
|
||||
switch (s5m8767->ramp_delay) {
|
||||
case 15:
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
|
||||
0xc0, 0xf0);
|
||||
case 25:
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
|
||||
0xd0, 0xf0);
|
||||
case 50:
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
|
||||
0xe0, 0xf0);
|
||||
case 100:
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
|
||||
0xf0, 0xf0);
|
||||
default:
|
||||
s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
|
||||
0x90, 0xf0);
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < pdata->num_regulators; i++) {
|
||||
const struct s5m_voltage_desc *desc;
|
||||
int id = pdata->regulators[i].id;
|
||||
|
||||
desc = reg_voltage_map[id];
|
||||
if (desc)
|
||||
regulators[id].n_voltages =
|
||||
(desc->max - desc->min) / desc->step + 1;
|
||||
|
||||
rdev[i] = regulator_register(®ulators[id], s5m8767->dev,
|
||||
pdata->regulators[i].initdata, s5m8767);
|
||||
if (IS_ERR(rdev[i])) {
|
||||
ret = PTR_ERR(rdev[i]);
|
||||
dev_err(s5m8767->dev, "regulator init failed for %d\n",
|
||||
id);
|
||||
rdev[i] = NULL;
|
||||
goto err;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
err:
|
||||
for (i = 0; i < s5m8767->num_regulators; i++)
|
||||
if (rdev[i])
|
||||
regulator_unregister(rdev[i]);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit s5m8767_pmic_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev);
|
||||
struct regulator_dev **rdev = s5m8767->rdev;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < s5m8767->num_regulators; i++)
|
||||
if (rdev[i])
|
||||
regulator_unregister(rdev[i]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct platform_device_id s5m8767_pmic_id[] = {
|
||||
{ "s5m8767-pmic", 0},
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
|
||||
|
||||
static struct platform_driver s5m8767_pmic_driver = {
|
||||
.driver = {
|
||||
.name = "s5m8767-pmic",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = s5m8767_pmic_probe,
|
||||
.remove = __devexit_p(s5m8767_pmic_remove),
|
||||
.id_table = s5m8767_pmic_id,
|
||||
};
|
||||
|
||||
static int __init s5m8767_pmic_init(void)
|
||||
{
|
||||
return platform_driver_register(&s5m8767_pmic_driver);
|
||||
}
|
||||
subsys_initcall(s5m8767_pmic_init);
|
||||
|
||||
static void __exit s5m8767_pmic_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&s5m8767_pmic_driver);
|
||||
}
|
||||
module_exit(s5m8767_pmic_exit);
|
||||
|
||||
/* Module information */
|
||||
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
|
||||
MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:s5m8767-pmic");
|
||||
Loading…
Reference in New Issue