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1015 lines
26 KiB
1015 lines
26 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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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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#include <linux/err.h> |
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#include <linux/of_gpio.h> |
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#include <linux/gpio/consumer.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/samsung/core.h> |
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#include <linux/mfd/samsung/s5m8767.h> |
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#include <linux/regulator/of_regulator.h> |
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#include <linux/regmap.h> |
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#define S5M8767_OPMODE_NORMAL_MODE 0x1 |
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struct s5m8767_info { |
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struct device *dev; |
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struct sec_pmic_dev *iodev; |
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int num_regulators; |
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struct sec_opmode_data *opmode; |
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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_ds[3]; |
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int buck_gpioindex; |
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}; |
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struct sec_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 sec_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 sec_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 sec_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 sec_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 sec_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 sec_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] = &buck_voltage_val3, |
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[S5M8767_BUCK8] = &buck_voltage_val3, |
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[S5M8767_BUCK9] = &buck_voltage_val3, |
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}; |
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static const unsigned int s5m8767_opmode_reg[][4] = { |
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/* {OFF, ON, LOWPOWER, SUSPEND} */ |
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/* LDO1 ... LDO28 */ |
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{0x0, 0x3, 0x2, 0x1}, /* LDO1 */ |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x0, 0x0, 0x0}, |
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{0x0, 0x3, 0x2, 0x1}, /* LDO5 */ |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, /* LDO10 */ |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, /* LDO15 */ |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x0, 0x0, 0x0}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, /* LDO20 */ |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x0, 0x0, 0x0}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, /* LDO25 */ |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, /* LDO28 */ |
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/* BUCK1 ... BUCK9 */ |
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{0x0, 0x3, 0x1, 0x1}, /* BUCK1 */ |
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{0x0, 0x3, 0x1, 0x1}, |
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{0x0, 0x3, 0x1, 0x1}, |
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{0x0, 0x3, 0x1, 0x1}, |
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{0x0, 0x3, 0x2, 0x1}, /* BUCK5 */ |
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{0x0, 0x3, 0x1, 0x1}, |
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{0x0, 0x3, 0x1, 0x1}, |
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{0x0, 0x3, 0x1, 0x1}, |
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{0x0, 0x3, 0x1, 0x1}, /* BUCK9 */ |
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}; |
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static int s5m8767_get_register(struct s5m8767_info *s5m8767, int reg_id, |
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int *reg, int *enable_ctrl) |
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{ |
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int i; |
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unsigned int mode; |
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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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for (i = 0; i < s5m8767->num_regulators; i++) { |
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if (s5m8767->opmode[i].id == reg_id) { |
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mode = s5m8767->opmode[i].mode; |
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break; |
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} |
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} |
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if (i >= s5m8767->num_regulators) |
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return -EINVAL; |
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*enable_ctrl = s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT; |
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return 0; |
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} |
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static int s5m8767_get_vsel_reg(int reg_id, struct s5m8767_info *s5m8767) |
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{ |
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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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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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reg = S5M8767_REG_BUCK3DVS1; |
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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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reg = S5M8767_REG_BUCK4DVS1; |
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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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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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return reg; |
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} |
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static int s5m8767_convert_voltage_to_sel(const struct sec_voltage_desc *desc, |
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int min_vol) |
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{ |
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int selector = 0; |
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if (desc == NULL) |
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return -EINVAL; |
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if (min_vol > desc->max) |
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return -EINVAL; |
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if (min_vol < desc->min) |
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min_vol = desc->min; |
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selector = DIV_ROUND_UP(min_vol - desc->min, desc->step); |
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if (desc->min + desc->step * selector > desc->max) |
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return -EINVAL; |
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return selector; |
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} |
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static inline int 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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return 0; |
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} |
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static inline int 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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return 0; |
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} |
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static int s5m8767_set_voltage_sel(struct regulator_dev *rdev, |
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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 = rdev_get_id(rdev); |
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int old_index, index = 0; |
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u8 *buck234_vol = NULL; |
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switch (reg_id) { |
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case S5M8767_LDO1 ... S5M8767_LDO28: |
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break; |
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case S5M8767_BUCK1 ... S5M8767_BUCK6: |
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if (reg_id == S5M8767_BUCK2 && s5m8767->buck2_gpiodvs) |
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buck234_vol = &s5m8767->buck2_vol[0]; |
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else if (reg_id == S5M8767_BUCK3 && s5m8767->buck3_gpiodvs) |
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buck234_vol = &s5m8767->buck3_vol[0]; |
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else if (reg_id == S5M8767_BUCK4 && s5m8767->buck4_gpiodvs) |
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buck234_vol = &s5m8767->buck4_vol[0]; |
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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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break; |
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default: |
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return -EINVAL; |
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} |
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/* buck234_vol != NULL means to control buck234 voltage via DVS GPIO */ |
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if (buck234_vol) { |
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while (*buck234_vol != selector) { |
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buck234_vol++; |
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index++; |
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} |
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old_index = s5m8767->buck_gpioindex; |
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s5m8767->buck_gpioindex = index; |
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if (index > old_index) |
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return s5m8767_set_high(s5m8767); |
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else |
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return s5m8767_set_low(s5m8767); |
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} else { |
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return regulator_set_voltage_sel_regmap(rdev, selector); |
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} |
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} |
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static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev, |
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unsigned int old_sel, |
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unsigned int new_sel) |
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{ |
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struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); |
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if ((old_sel < new_sel) && s5m8767->ramp_delay) |
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return DIV_ROUND_UP(rdev->desc->uV_step * (new_sel - old_sel), |
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s5m8767->ramp_delay * 1000); |
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return 0; |
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} |
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static const struct regulator_ops s5m8767_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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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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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = s5m8767_set_voltage_sel, |
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.set_voltage_time_sel = s5m8767_set_voltage_time_sel, |
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}; |
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static const struct regulator_ops s5m8767_buck78_ops = { |
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.list_voltage = regulator_list_voltage_linear, |
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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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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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}; |
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#define s5m8767_regulator_desc(_name) { \ |
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.name = #_name, \ |
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.id = S5M8767_##_name, \ |
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.ops = &s5m8767_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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} |
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#define s5m8767_regulator_buck78_desc(_name) { \ |
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.name = #_name, \ |
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.id = S5M8767_##_name, \ |
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.ops = &s5m8767_buck78_ops, \ |
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.type = REGULATOR_VOLTAGE, \ |
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.owner = THIS_MODULE, \ |
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} |
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static struct regulator_desc regulators[] = { |
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s5m8767_regulator_desc(LDO1), |
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s5m8767_regulator_desc(LDO2), |
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s5m8767_regulator_desc(LDO3), |
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s5m8767_regulator_desc(LDO4), |
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s5m8767_regulator_desc(LDO5), |
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s5m8767_regulator_desc(LDO6), |
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s5m8767_regulator_desc(LDO7), |
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s5m8767_regulator_desc(LDO8), |
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s5m8767_regulator_desc(LDO9), |
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s5m8767_regulator_desc(LDO10), |
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s5m8767_regulator_desc(LDO11), |
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s5m8767_regulator_desc(LDO12), |
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s5m8767_regulator_desc(LDO13), |
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s5m8767_regulator_desc(LDO14), |
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s5m8767_regulator_desc(LDO15), |
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s5m8767_regulator_desc(LDO16), |
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s5m8767_regulator_desc(LDO17), |
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s5m8767_regulator_desc(LDO18), |
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s5m8767_regulator_desc(LDO19), |
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s5m8767_regulator_desc(LDO20), |
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s5m8767_regulator_desc(LDO21), |
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s5m8767_regulator_desc(LDO22), |
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s5m8767_regulator_desc(LDO23), |
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s5m8767_regulator_desc(LDO24), |
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s5m8767_regulator_desc(LDO25), |
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s5m8767_regulator_desc(LDO26), |
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s5m8767_regulator_desc(LDO27), |
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s5m8767_regulator_desc(LDO28), |
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s5m8767_regulator_desc(BUCK1), |
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s5m8767_regulator_desc(BUCK2), |
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s5m8767_regulator_desc(BUCK3), |
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s5m8767_regulator_desc(BUCK4), |
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s5m8767_regulator_desc(BUCK5), |
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s5m8767_regulator_desc(BUCK6), |
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s5m8767_regulator_buck78_desc(BUCK7), |
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s5m8767_regulator_buck78_desc(BUCK8), |
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s5m8767_regulator_desc(BUCK9), |
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}; |
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|
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/* |
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* Enable GPIO control over BUCK9 in regulator_config for that regulator. |
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*/ |
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static void s5m8767_regulator_config_ext_control(struct s5m8767_info *s5m8767, |
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struct sec_regulator_data *rdata, |
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struct regulator_config *config) |
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{ |
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int i, mode = 0; |
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|
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if (rdata->id != S5M8767_BUCK9) |
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return; |
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|
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/* Check if opmode for regulator matches S5M8767_ENCTRL_USE_GPIO */ |
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for (i = 0; i < s5m8767->num_regulators; i++) { |
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const struct sec_opmode_data *opmode = &s5m8767->opmode[i]; |
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if (opmode->id == rdata->id) { |
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mode = s5m8767_opmode_reg[rdata->id][opmode->mode]; |
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break; |
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} |
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} |
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if (mode != S5M8767_ENCTRL_USE_GPIO) { |
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dev_warn(s5m8767->dev, |
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"ext-control for %pOFn: mismatched op_mode (%x), ignoring\n", |
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rdata->reg_node, mode); |
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return; |
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} |
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|
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if (!rdata->ext_control_gpiod) { |
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dev_warn(s5m8767->dev, |
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"ext-control for %pOFn: GPIO not valid, ignoring\n", |
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rdata->reg_node); |
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return; |
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} |
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|
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config->ena_gpiod = rdata->ext_control_gpiod; |
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} |
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|
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/* |
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* Turn on GPIO control over BUCK9. |
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*/ |
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static int s5m8767_enable_ext_control(struct s5m8767_info *s5m8767, |
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struct regulator_dev *rdev) |
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{ |
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int id = rdev_get_id(rdev); |
|
int ret, reg, enable_ctrl; |
|
|
|
if (id != S5M8767_BUCK9) |
|
return -EINVAL; |
|
|
|
ret = s5m8767_get_register(s5m8767, id, ®, &enable_ctrl); |
|
if (ret) |
|
return ret; |
|
|
|
return regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
reg, S5M8767_ENCTRL_MASK, |
|
S5M8767_ENCTRL_USE_GPIO << S5M8767_ENCTRL_SHIFT); |
|
} |
|
|
|
|
|
#ifdef CONFIG_OF |
|
static int s5m8767_pmic_dt_parse_dvs_gpio(struct sec_pmic_dev *iodev, |
|
struct sec_platform_data *pdata, |
|
struct device_node *pmic_np) |
|
{ |
|
int i, gpio; |
|
|
|
for (i = 0; i < 3; i++) { |
|
gpio = of_get_named_gpio(pmic_np, |
|
"s5m8767,pmic-buck-dvs-gpios", i); |
|
if (!gpio_is_valid(gpio)) { |
|
dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio); |
|
return -EINVAL; |
|
} |
|
pdata->buck_gpios[i] = gpio; |
|
} |
|
return 0; |
|
} |
|
|
|
static int s5m8767_pmic_dt_parse_ds_gpio(struct sec_pmic_dev *iodev, |
|
struct sec_platform_data *pdata, |
|
struct device_node *pmic_np) |
|
{ |
|
int i, gpio; |
|
|
|
for (i = 0; i < 3; i++) { |
|
gpio = of_get_named_gpio(pmic_np, |
|
"s5m8767,pmic-buck-ds-gpios", i); |
|
if (!gpio_is_valid(gpio)) { |
|
dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio); |
|
return -EINVAL; |
|
} |
|
pdata->buck_ds[i] = gpio; |
|
} |
|
return 0; |
|
} |
|
|
|
static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev, |
|
struct sec_platform_data *pdata) |
|
{ |
|
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); |
|
struct device_node *pmic_np, *regulators_np, *reg_np; |
|
struct sec_regulator_data *rdata; |
|
struct sec_opmode_data *rmode; |
|
unsigned int i, dvs_voltage_nr = 8, ret; |
|
|
|
pmic_np = iodev->dev->of_node; |
|
if (!pmic_np) { |
|
dev_err(iodev->dev, "could not find pmic sub-node\n"); |
|
return -ENODEV; |
|
} |
|
|
|
regulators_np = of_get_child_by_name(pmic_np, "regulators"); |
|
if (!regulators_np) { |
|
dev_err(iodev->dev, "could not find regulators sub-node\n"); |
|
return -EINVAL; |
|
} |
|
|
|
/* count the number of regulators to be supported in pmic */ |
|
pdata->num_regulators = of_get_child_count(regulators_np); |
|
|
|
rdata = devm_kcalloc(&pdev->dev, |
|
pdata->num_regulators, sizeof(*rdata), |
|
GFP_KERNEL); |
|
if (!rdata) { |
|
of_node_put(regulators_np); |
|
return -ENOMEM; |
|
} |
|
|
|
rmode = devm_kcalloc(&pdev->dev, |
|
pdata->num_regulators, sizeof(*rmode), |
|
GFP_KERNEL); |
|
if (!rmode) { |
|
of_node_put(regulators_np); |
|
return -ENOMEM; |
|
} |
|
|
|
pdata->regulators = rdata; |
|
pdata->opmode = rmode; |
|
for_each_child_of_node(regulators_np, reg_np) { |
|
for (i = 0; i < ARRAY_SIZE(regulators); i++) |
|
if (of_node_name_eq(reg_np, regulators[i].name)) |
|
break; |
|
|
|
if (i == ARRAY_SIZE(regulators)) { |
|
dev_warn(iodev->dev, |
|
"don't know how to configure regulator %pOFn\n", |
|
reg_np); |
|
continue; |
|
} |
|
|
|
rdata->ext_control_gpiod = devm_fwnode_gpiod_get( |
|
&pdev->dev, |
|
of_fwnode_handle(reg_np), |
|
"s5m8767,pmic-ext-control", |
|
GPIOD_OUT_HIGH | GPIOD_FLAGS_BIT_NONEXCLUSIVE, |
|
"s5m8767"); |
|
if (PTR_ERR(rdata->ext_control_gpiod) == -ENOENT) { |
|
rdata->ext_control_gpiod = NULL; |
|
} else if (IS_ERR(rdata->ext_control_gpiod)) { |
|
of_node_put(reg_np); |
|
of_node_put(regulators_np); |
|
return PTR_ERR(rdata->ext_control_gpiod); |
|
} |
|
|
|
rdata->id = i; |
|
rdata->initdata = of_get_regulator_init_data( |
|
&pdev->dev, reg_np, |
|
®ulators[i]); |
|
rdata->reg_node = reg_np; |
|
rdata++; |
|
rmode->id = i; |
|
if (of_property_read_u32(reg_np, "op_mode", |
|
&rmode->mode)) { |
|
dev_warn(iodev->dev, |
|
"no op_mode property at %pOF\n", |
|
reg_np); |
|
|
|
rmode->mode = S5M8767_OPMODE_NORMAL_MODE; |
|
} |
|
rmode++; |
|
} |
|
|
|
of_node_put(regulators_np); |
|
|
|
if (of_get_property(pmic_np, "s5m8767,pmic-buck2-uses-gpio-dvs", NULL)) { |
|
pdata->buck2_gpiodvs = true; |
|
|
|
if (of_property_read_u32_array(pmic_np, |
|
"s5m8767,pmic-buck2-dvs-voltage", |
|
pdata->buck2_voltage, dvs_voltage_nr)) { |
|
dev_err(iodev->dev, "buck2 voltages not specified\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (of_get_property(pmic_np, "s5m8767,pmic-buck3-uses-gpio-dvs", NULL)) { |
|
pdata->buck3_gpiodvs = true; |
|
|
|
if (of_property_read_u32_array(pmic_np, |
|
"s5m8767,pmic-buck3-dvs-voltage", |
|
pdata->buck3_voltage, dvs_voltage_nr)) { |
|
dev_err(iodev->dev, "buck3 voltages not specified\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (of_get_property(pmic_np, "s5m8767,pmic-buck4-uses-gpio-dvs", NULL)) { |
|
pdata->buck4_gpiodvs = true; |
|
|
|
if (of_property_read_u32_array(pmic_np, |
|
"s5m8767,pmic-buck4-dvs-voltage", |
|
pdata->buck4_voltage, dvs_voltage_nr)) { |
|
dev_err(iodev->dev, "buck4 voltages not specified\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs || |
|
pdata->buck4_gpiodvs) { |
|
ret = s5m8767_pmic_dt_parse_dvs_gpio(iodev, pdata, pmic_np); |
|
if (ret) |
|
return -EINVAL; |
|
|
|
if (of_property_read_u32(pmic_np, |
|
"s5m8767,pmic-buck-default-dvs-idx", |
|
&pdata->buck_default_idx)) { |
|
pdata->buck_default_idx = 0; |
|
} else { |
|
if (pdata->buck_default_idx >= 8) { |
|
pdata->buck_default_idx = 0; |
|
dev_info(iodev->dev, |
|
"invalid value for default dvs index, use 0\n"); |
|
} |
|
} |
|
} |
|
|
|
ret = s5m8767_pmic_dt_parse_ds_gpio(iodev, pdata, pmic_np); |
|
if (ret) |
|
return -EINVAL; |
|
|
|
if (of_get_property(pmic_np, "s5m8767,pmic-buck2-ramp-enable", NULL)) |
|
pdata->buck2_ramp_enable = true; |
|
|
|
if (of_get_property(pmic_np, "s5m8767,pmic-buck3-ramp-enable", NULL)) |
|
pdata->buck3_ramp_enable = true; |
|
|
|
if (of_get_property(pmic_np, "s5m8767,pmic-buck4-ramp-enable", NULL)) |
|
pdata->buck4_ramp_enable = true; |
|
|
|
if (pdata->buck2_ramp_enable || pdata->buck3_ramp_enable |
|
|| pdata->buck4_ramp_enable) { |
|
if (of_property_read_u32(pmic_np, "s5m8767,pmic-buck-ramp-delay", |
|
&pdata->buck_ramp_delay)) |
|
pdata->buck_ramp_delay = 0; |
|
} |
|
|
|
return 0; |
|
} |
|
#else |
|
static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev, |
|
struct sec_platform_data *pdata) |
|
{ |
|
return 0; |
|
} |
|
#endif /* CONFIG_OF */ |
|
|
|
static int s5m8767_pmic_probe(struct platform_device *pdev) |
|
{ |
|
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); |
|
struct sec_platform_data *pdata = iodev->pdata; |
|
struct regulator_config config = { }; |
|
struct s5m8767_info *s5m8767; |
|
int i, ret, buck_init; |
|
|
|
if (!pdata) { |
|
dev_err(pdev->dev.parent, "Platform data not supplied\n"); |
|
return -ENODEV; |
|
} |
|
|
|
if (iodev->dev->of_node) { |
|
ret = s5m8767_pmic_dt_parse_pdata(pdev, pdata); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
if (pdata->buck2_gpiodvs) { |
|
if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) { |
|
dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (pdata->buck3_gpiodvs) { |
|
if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) { |
|
dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (pdata->buck4_gpiodvs) { |
|
if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) { |
|
dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info), |
|
GFP_KERNEL); |
|
if (!s5m8767) |
|
return -ENOMEM; |
|
|
|
s5m8767->dev = &pdev->dev; |
|
s5m8767->iodev = iodev; |
|
s5m8767->num_regulators = pdata->num_regulators; |
|
platform_set_drvdata(pdev, s5m8767); |
|
|
|
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->buck_ds[0] = pdata->buck_ds[0]; |
|
s5m8767->buck_ds[1] = pdata->buck_ds[1]; |
|
s5m8767->buck_ds[2] = pdata->buck_ds[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; |
|
s5m8767->opmode = pdata->opmode; |
|
|
|
buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2, |
|
pdata->buck2_init); |
|
|
|
regmap_write(s5m8767->iodev->regmap_pmic, S5M8767_REG_BUCK2DVS2, |
|
buck_init); |
|
|
|
buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2, |
|
pdata->buck3_init); |
|
|
|
regmap_write(s5m8767->iodev->regmap_pmic, S5M8767_REG_BUCK3DVS2, |
|
buck_init); |
|
|
|
buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2, |
|
pdata->buck4_init); |
|
|
|
regmap_write(s5m8767->iodev->regmap_pmic, S5M8767_REG_BUCK4DVS2, |
|
buck_init); |
|
|
|
for (i = 0; i < 8; i++) { |
|
if (s5m8767->buck2_gpiodvs) { |
|
s5m8767->buck2_vol[i] = |
|
s5m8767_convert_voltage_to_sel( |
|
&buck_voltage_val2, |
|
pdata->buck2_voltage[i]); |
|
} |
|
|
|
if (s5m8767->buck3_gpiodvs) { |
|
s5m8767->buck3_vol[i] = |
|
s5m8767_convert_voltage_to_sel( |
|
&buck_voltage_val2, |
|
pdata->buck3_voltage[i]); |
|
} |
|
|
|
if (s5m8767->buck4_gpiodvs) { |
|
s5m8767->buck4_vol[i] = |
|
s5m8767_convert_voltage_to_sel( |
|
&buck_voltage_val2, |
|
pdata->buck4_voltage[i]); |
|
} |
|
} |
|
|
|
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])) { |
|
dev_err(&pdev->dev, "GPIO NOT VALID\n"); |
|
return -EINVAL; |
|
} |
|
|
|
ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[0], |
|
"S5M8767 SET1"); |
|
if (ret) |
|
return ret; |
|
|
|
ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[1], |
|
"S5M8767 SET2"); |
|
if (ret) |
|
return ret; |
|
|
|
ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[2], |
|
"S5M8767 SET3"); |
|
if (ret) |
|
return ret; |
|
|
|
/* 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 = devm_gpio_request(&pdev->dev, pdata->buck_ds[0], "S5M8767 DS2"); |
|
if (ret) |
|
return ret; |
|
|
|
ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[1], "S5M8767 DS3"); |
|
if (ret) |
|
return ret; |
|
|
|
ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[2], "S5M8767 DS4"); |
|
if (ret) |
|
return ret; |
|
|
|
/* DS2 GPIO */ |
|
gpio_direction_output(pdata->buck_ds[0], 0x0); |
|
/* DS3 GPIO */ |
|
gpio_direction_output(pdata->buck_ds[1], 0x0); |
|
/* DS4 GPIO */ |
|
gpio_direction_output(pdata->buck_ds[2], 0x0); |
|
|
|
if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs || |
|
pdata->buck4_gpiodvs) { |
|
regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_BUCK2CTRL, 1 << 1, |
|
(pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1)); |
|
regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_BUCK3CTRL, 1 << 1, |
|
(pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1)); |
|
regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_BUCK4CTRL, 1 << 1, |
|
(pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1)); |
|
} |
|
|
|
/* Initialize GPIO DVS registers */ |
|
for (i = 0; i < 8; i++) { |
|
if (s5m8767->buck2_gpiodvs) { |
|
regmap_write(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_BUCK2DVS1 + i, |
|
s5m8767->buck2_vol[i]); |
|
} |
|
|
|
if (s5m8767->buck3_gpiodvs) { |
|
regmap_write(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_BUCK3DVS1 + i, |
|
s5m8767->buck3_vol[i]); |
|
} |
|
|
|
if (s5m8767->buck4_gpiodvs) { |
|
regmap_write(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_BUCK4DVS1 + i, |
|
s5m8767->buck4_vol[i]); |
|
} |
|
} |
|
|
|
if (s5m8767->buck2_ramp) |
|
regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_DVSRAMP, 0x08, 0x08); |
|
|
|
if (s5m8767->buck3_ramp) |
|
regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_DVSRAMP, 0x04, 0x04); |
|
|
|
if (s5m8767->buck4_ramp) |
|
regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_DVSRAMP, 0x02, 0x02); |
|
|
|
if (s5m8767->buck2_ramp || s5m8767->buck3_ramp |
|
|| s5m8767->buck4_ramp) { |
|
unsigned int val; |
|
switch (s5m8767->ramp_delay) { |
|
case 5: |
|
val = S5M8767_DVS_BUCK_RAMP_5; |
|
break; |
|
case 10: |
|
val = S5M8767_DVS_BUCK_RAMP_10; |
|
break; |
|
case 25: |
|
val = S5M8767_DVS_BUCK_RAMP_25; |
|
break; |
|
case 50: |
|
val = S5M8767_DVS_BUCK_RAMP_50; |
|
break; |
|
case 100: |
|
val = S5M8767_DVS_BUCK_RAMP_100; |
|
break; |
|
default: |
|
val = S5M8767_DVS_BUCK_RAMP_10; |
|
} |
|
regmap_update_bits(s5m8767->iodev->regmap_pmic, |
|
S5M8767_REG_DVSRAMP, |
|
S5M8767_DVS_BUCK_RAMP_MASK, |
|
val << S5M8767_DVS_BUCK_RAMP_SHIFT); |
|
} |
|
|
|
for (i = 0; i < pdata->num_regulators; i++) { |
|
const struct sec_voltage_desc *desc; |
|
int id = pdata->regulators[i].id; |
|
int enable_reg, enable_val; |
|
struct regulator_dev *rdev; |
|
|
|
desc = reg_voltage_map[id]; |
|
if (desc) { |
|
regulators[id].n_voltages = |
|
(desc->max - desc->min) / desc->step + 1; |
|
regulators[id].min_uV = desc->min; |
|
regulators[id].uV_step = desc->step; |
|
regulators[id].vsel_reg = |
|
s5m8767_get_vsel_reg(id, s5m8767); |
|
if (id < S5M8767_BUCK1) |
|
regulators[id].vsel_mask = 0x3f; |
|
else |
|
regulators[id].vsel_mask = 0xff; |
|
|
|
ret = s5m8767_get_register(s5m8767, id, &enable_reg, |
|
&enable_val); |
|
if (ret) { |
|
dev_err(s5m8767->dev, "error reading registers\n"); |
|
return ret; |
|
} |
|
regulators[id].enable_reg = enable_reg; |
|
regulators[id].enable_mask = S5M8767_ENCTRL_MASK; |
|
regulators[id].enable_val = enable_val; |
|
} |
|
|
|
config.dev = s5m8767->dev; |
|
config.init_data = pdata->regulators[i].initdata; |
|
config.driver_data = s5m8767; |
|
config.regmap = iodev->regmap_pmic; |
|
config.of_node = pdata->regulators[i].reg_node; |
|
config.ena_gpiod = NULL; |
|
if (pdata->regulators[i].ext_control_gpiod) { |
|
/* Assigns config.ena_gpiod */ |
|
s5m8767_regulator_config_ext_control(s5m8767, |
|
&pdata->regulators[i], &config); |
|
|
|
/* |
|
* Hand the GPIO descriptor management over to the |
|
* regulator core, remove it from devres management. |
|
*/ |
|
devm_gpiod_unhinge(s5m8767->dev, config.ena_gpiod); |
|
} |
|
rdev = devm_regulator_register(&pdev->dev, ®ulators[id], |
|
&config); |
|
if (IS_ERR(rdev)) { |
|
ret = PTR_ERR(rdev); |
|
dev_err(s5m8767->dev, "regulator init failed for %d\n", |
|
id); |
|
return ret; |
|
} |
|
|
|
if (pdata->regulators[i].ext_control_gpiod) { |
|
ret = s5m8767_enable_ext_control(s5m8767, rdev); |
|
if (ret < 0) { |
|
dev_err(s5m8767->dev, |
|
"failed to enable gpio control over %s: %d\n", |
|
rdev->desc->name, ret); |
|
return ret; |
|
} |
|
} |
|
} |
|
|
|
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", |
|
}, |
|
.probe = s5m8767_pmic_probe, |
|
.id_table = s5m8767_pmic_id, |
|
}; |
|
module_platform_driver(s5m8767_pmic_driver); |
|
|
|
/* Module information */ |
|
MODULE_AUTHOR("Sangbeom Kim <[email protected]>"); |
|
MODULE_DESCRIPTION("Samsung S5M8767 Regulator Driver"); |
|
MODULE_LICENSE("GPL");
|
|
|