regulator: Support ROHM BD71815 regulators
Support voltage control for regulators on ROHM BD71815 PMIC. ROHM BD71815 contains 5 bucks, 7 LDOs and a boost (intended for LED). Bucks 1 and 2 support HW state based voltage level and enable states. Other regulators support HW state based enable states. All bucks and LDOs 1-5 allow voltage changes for RUN state and LDO4 can be enabled/disabled via GPIO. LDO3 does support changing between two predetermined voltages by using a GPIO but this functionality is not included in this commit. This work is derived from driver originally written by Tony Luo <luofc@embedinfo.com> - although not much of original work is left. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Matti Vaittinen
Lee Jones
parent
18f3c62586
commit
1aad39001e
@ -204,6 +204,17 @@ config REGULATOR_BD70528
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This driver can also be built as a module. If so, the module
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will be called bd70528-regulator.
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config REGULATOR_BD71815
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tristate "ROHM BD71815 Power Regulator"
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depends on MFD_ROHM_BD71828
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help
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This driver supports voltage regulators on ROHM BD71815 PMIC.
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This will enable support for the software controllable buck
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and LDO regulators and a current regulator for LEDs.
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This driver can also be built as a module. If so, the module
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will be called bd71815-regulator.
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config REGULATOR_BD71828
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tristate "ROHM BD71828 Power Regulator"
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depends on MFD_ROHM_BD71828
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@ -30,6 +30,7 @@ obj-$(CONFIG_REGULATOR_ATC260X) += atc260x-regulator.o
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obj-$(CONFIG_REGULATOR_AXP20X) += axp20x-regulator.o
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obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o
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obj-$(CONFIG_REGULATOR_BD70528) += bd70528-regulator.o
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obj-$(CONFIG_REGULATOR_BD71815) += bd71815-regulator.o
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obj-$(CONFIG_REGULATOR_BD71828) += bd71828-regulator.o
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obj-$(CONFIG_REGULATOR_BD718XX) += bd718x7-regulator.o
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obj-$(CONFIG_REGULATOR_BD9571MWV) += bd9571mwv-regulator.o
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652
drivers/regulator/bd71815-regulator.c
Normal file
652
drivers/regulator/bd71815-regulator.c
Normal file
@ -0,0 +1,652 @@
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// SPDX-License-Identifier: GPL-2.0-only
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//
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// Copyright 2014 Embest Technology Co. Ltd. Inc.
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// bd71815-regulator.c ROHM BD71815 regulator driver
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//
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// Author: Tony Luo <luofc@embedinfo.com>
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//
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// Partially rewritten at 2021 by
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// Matti Vaittinen <matti.vaitinen@fi.rohmeurope.com>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/mfd/rohm-generic.h>
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#include <linux/mfd/rohm-bd71815.h>
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#include <linux/regulator/of_regulator.h>
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struct bd71815_regulator {
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struct regulator_desc desc;
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const struct rohm_dvs_config *dvs;
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};
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struct bd71815_pmic {
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struct bd71815_regulator descs[BD71815_REGULATOR_CNT];
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struct regmap *regmap;
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struct device *dev;
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struct gpio_descs *gps;
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struct regulator_dev *rdev[BD71815_REGULATOR_CNT];
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};
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static const int bd7181x_wled_currents[] = {
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10, 20, 30, 50, 70, 100, 200, 300, 500, 700, 1000, 2000, 3000, 4000,
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5000, 6000, 7000, 8000, 9000, 10000, 11000, 12000, 13000, 14000, 15000,
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16000, 17000, 18000, 19000, 20000, 21000, 22000, 23000, 24000, 25000,
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};
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static const struct rohm_dvs_config buck1_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK1_VOLT_H,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_reg = BD71815_REG_BUCK1_VOLT_L,
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.suspend_mask = BD71815_VOLT_MASK,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_reg = BD71815_REG_BUCK1_VOLT_L,
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.lpsr_mask = BD71815_VOLT_MASK,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config buck2_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK2_VOLT_H,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_reg = BD71815_REG_BUCK2_VOLT_L,
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.suspend_mask = BD71815_VOLT_MASK,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_reg = BD71815_REG_BUCK2_VOLT_L,
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.lpsr_mask = BD71815_VOLT_MASK,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config buck3_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK3_VOLT,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config buck4_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK4_VOLT,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo1_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE1,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO1_RUN_ON,
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.snvs_on_mask = LDO1_SNVS_ON,
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.suspend_on_mask = LDO1_SUSP_ON,
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.lpsr_on_mask = LDO1_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo2_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE2,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO2_RUN_ON,
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.snvs_on_mask = LDO2_SNVS_ON,
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.suspend_on_mask = LDO2_SUSP_ON,
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.lpsr_on_mask = LDO2_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo3_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE2,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO3_RUN_ON,
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.snvs_on_mask = LDO3_SNVS_ON,
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.suspend_on_mask = LDO3_SUSP_ON,
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.lpsr_on_mask = LDO3_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo4_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE3,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO4_RUN_ON,
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.snvs_on_mask = LDO4_SNVS_ON,
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.suspend_on_mask = LDO4_SUSP_ON,
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.lpsr_on_mask = LDO4_LPSR_ON,
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};
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static const struct rohm_dvs_config ldo5_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_LDO_MODE3,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = LDO5_RUN_ON,
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.snvs_on_mask = LDO5_SNVS_ON,
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.suspend_on_mask = LDO5_SUSP_ON,
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.lpsr_on_mask = LDO5_LPSR_ON,
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};
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static const struct rohm_dvs_config dvref_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_on_mask = DVREF_RUN_ON,
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.snvs_on_mask = DVREF_SNVS_ON,
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.suspend_on_mask = DVREF_SUSP_ON,
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.lpsr_on_mask = DVREF_LPSR_ON,
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};
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static const struct rohm_dvs_config ldolpsr_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_on_mask = DVREF_RUN_ON,
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.snvs_on_mask = DVREF_SNVS_ON,
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.suspend_on_mask = DVREF_SUSP_ON,
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.lpsr_on_mask = DVREF_LPSR_ON,
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};
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static const struct rohm_dvs_config buck5_dvs = {
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.level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_SNVS |
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ROHM_DVS_LEVEL_SUSPEND | ROHM_DVS_LEVEL_LPSR,
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.run_reg = BD71815_REG_BUCK5_VOLT,
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.run_mask = BD71815_VOLT_MASK,
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.run_on_mask = BD71815_BUCK_RUN_ON,
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.snvs_on_mask = BD71815_BUCK_SNVS_ON,
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.suspend_on_mask = BD71815_BUCK_SUSP_ON,
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.lpsr_on_mask = BD71815_BUCK_LPSR_ON,
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};
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static int set_hw_dvs_levels(struct device_node *np,
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const struct regulator_desc *desc,
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struct regulator_config *cfg)
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{
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struct bd71815_regulator *data;
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data = container_of(desc, struct bd71815_regulator, desc);
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return rohm_regulator_set_dvs_levels(data->dvs, np, desc, cfg->regmap);
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}
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/*
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* Bucks 1 and 2 have two voltage selection registers where selected
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* voltage can be set. Which of the registers is used can be either controlled
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* by a control bit in register - or by HW state. If HW state specific voltages
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* are given - then we assume HW state based control should be used.
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*
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* If volatge value is updated to currently selected register - then output
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* voltage is immediately changed no matter what is set as ramp rate. Thus we
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* default changing voltage by writing new value to inactive register and
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* then updating the 'register selection' bit. This naturally only works when
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* HW state machine is not used to select the voltage.
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*/
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static int buck12_set_hw_dvs_levels(struct device_node *np,
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const struct regulator_desc *desc,
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struct regulator_config *cfg)
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{
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struct bd71815_regulator *data;
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int ret = 0, val;
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data = container_of(desc, struct bd71815_regulator, desc);
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if (of_find_property(np, "rohm,dvs-run-voltage", NULL) ||
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of_find_property(np, "rohm,dvs-suspend-voltage", NULL) ||
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of_find_property(np, "rohm,dvs-lpsr-voltage", NULL) ||
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of_find_property(np, "rohm,dvs-snvs-voltage", NULL)) {
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ret = regmap_read(cfg->regmap, desc->vsel_reg, &val);
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if (ret)
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return ret;
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if (!(BD71815_BUCK_STBY_DVS & val) &&
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!(BD71815_BUCK_DVSSEL & val)) {
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int val2;
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/*
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* We are currently using voltage from _L.
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* We'd better copy it to _H and switch to it to
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* avoid shutting us down if LPSR or SUSPEND is set to
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* disabled. _L value is at reg _H + 1
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*/
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ret = regmap_read(cfg->regmap, desc->vsel_reg + 1,
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&val2);
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if (ret)
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return ret;
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ret = regmap_update_bits(cfg->regmap, desc->vsel_reg,
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BD71815_VOLT_MASK |
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BD71815_BUCK_DVSSEL,
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val2 | BD71815_BUCK_DVSSEL);
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if (ret)
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return ret;
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}
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ret = rohm_regulator_set_dvs_levels(data->dvs, np, desc,
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cfg->regmap);
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if (ret)
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return ret;
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/*
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* DVS levels were given => use HW-state machine for voltage
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* controls. NOTE: AFAIK, This means that if voltage is changed
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* by SW the ramp-rate is not respected. Should we disable
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* SW voltage control when the HW state machine is used?
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*/
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ret = regmap_update_bits(cfg->regmap, desc->vsel_reg,
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BD71815_BUCK_STBY_DVS,
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BD71815_BUCK_STBY_DVS);
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}
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return ret;
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}
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/*
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* BUCK1/2
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* BUCK1RAMPRATE[1:0] BUCK1 DVS ramp rate setting
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* 00: 10.00mV/usec 10mV 1uS
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* 01: 5.00mV/usec 10mV 2uS
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* 10: 2.50mV/usec 10mV 4uS
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* 11: 1.25mV/usec 10mV 8uS
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*/
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static const unsigned int bd7181x_ramp_table[] = { 1250, 2500, 5000, 10000 };
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static int bd7181x_led_set_current_limit(struct regulator_dev *rdev,
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int min_uA, int max_uA)
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{
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int ret;
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int onstatus;
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onstatus = regulator_is_enabled_regmap(rdev);
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ret = regulator_set_current_limit_regmap(rdev, min_uA, max_uA);
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if (!ret) {
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int newstatus;
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newstatus = regulator_is_enabled_regmap(rdev);
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if (onstatus != newstatus) {
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/*
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* HW FIX: spurious led status change detected. Toggle
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* state as a workaround
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*/
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if (onstatus)
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ret = regulator_enable_regmap(rdev);
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else
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ret = regulator_disable_regmap(rdev);
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if (ret)
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dev_err(rdev_get_dev(rdev),
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"failed to revert the LED state (%d)\n",
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ret);
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}
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}
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return ret;
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}
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static int bd7181x_buck12_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct bd71815_pmic *pmic = rdev_get_drvdata(rdev);
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int rid = rdev_get_id(rdev);
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int ret, regh, regl, val;
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regh = BD71815_REG_BUCK1_VOLT_H + rid * 0x2;
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regl = BD71815_REG_BUCK1_VOLT_L + rid * 0x2;
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ret = regmap_read(pmic->regmap, regh, &val);
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if (ret)
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return ret;
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/*
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* If we use HW state machine based voltage reg selection - then we
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* return BD71815_REG_BUCK1_VOLT_H which is used at RUN.
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* Else we do return the BD71815_REG_BUCK1_VOLT_H or
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* BD71815_REG_BUCK1_VOLT_L depending on which is selected to be used
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* by BD71815_BUCK_DVSSEL bit
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*/
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if ((!(val & BD71815_BUCK_STBY_DVS)) && (!(val & BD71815_BUCK_DVSSEL)))
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ret = regmap_read(pmic->regmap, regl, &val);
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if (ret)
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return ret;
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return val & BD71815_VOLT_MASK;
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}
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/*
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* For Buck 1/2.
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*/
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static int bd7181x_buck12_set_voltage_sel(struct regulator_dev *rdev,
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unsigned int sel)
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{
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struct bd71815_pmic *pmic = rdev_get_drvdata(rdev);
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int rid = rdev_get_id(rdev);
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int ret, val, reg, regh, regl;
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regh = BD71815_REG_BUCK1_VOLT_H + rid*0x2;
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regl = BD71815_REG_BUCK1_VOLT_L + rid*0x2;
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ret = regmap_read(pmic->regmap, regh, &val);
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if (ret)
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return ret;
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/*
|
||||
* If bucks 1 & 2 are controlled by state machine - then the RUN state
|
||||
* voltage is set to BD71815_REG_BUCK1_VOLT_H. Changing SUSPEND/LPSR
|
||||
* voltages at runtime is not supported by this driver.
|
||||
*/
|
||||
if (((val & BD71815_BUCK_STBY_DVS))) {
|
||||
return regmap_update_bits(pmic->regmap, regh, BD71815_VOLT_MASK,
|
||||
sel);
|
||||
}
|
||||
/* Update new voltage to the register which is not selected now */
|
||||
if (val & BD71815_BUCK_DVSSEL)
|
||||
reg = regl;
|
||||
else
|
||||
reg = regh;
|
||||
|
||||
ret = regmap_update_bits(pmic->regmap, reg, BD71815_VOLT_MASK, sel);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Select the other DVS register to be used */
|
||||
return regmap_update_bits(pmic->regmap, regh, BD71815_BUCK_DVSSEL, ~val);
|
||||
}
|
||||
|
||||
static const struct regulator_ops bd7181x_ldo_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
};
|
||||
|
||||
static const struct regulator_ops bd7181x_fixed_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
};
|
||||
|
||||
static const struct regulator_ops bd7181x_buck_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
||||
};
|
||||
|
||||
static const struct regulator_ops bd7181x_buck12_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.list_voltage = regulator_list_voltage_linear,
|
||||
.set_voltage_sel = bd7181x_buck12_set_voltage_sel,
|
||||
.get_voltage_sel = bd7181x_buck12_get_voltage_sel,
|
||||
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
||||
.set_ramp_delay = regulator_set_ramp_delay_regmap,
|
||||
};
|
||||
|
||||
static const struct regulator_ops bd7181x_led_regulator_ops = {
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.set_current_limit = bd7181x_led_set_current_limit,
|
||||
.get_current_limit = regulator_get_current_limit_regmap,
|
||||
};
|
||||
|
||||
#define BD71815_FIXED_REG(_name, _id, ereg, emsk, voltage, _dvs) \
|
||||
[(_id)] = { \
|
||||
.desc = { \
|
||||
.name = #_name, \
|
||||
.of_match = of_match_ptr(#_name), \
|
||||
.regulators_node = of_match_ptr("regulators"), \
|
||||
.n_voltages = 1, \
|
||||
.ops = &bd7181x_fixed_regulator_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = (_id), \
|
||||
.owner = THIS_MODULE, \
|
||||
.min_uV = (voltage), \
|
||||
.enable_reg = (ereg), \
|
||||
.enable_mask = (emsk), \
|
||||
.of_parse_cb = set_hw_dvs_levels, \
|
||||
}, \
|
||||
.dvs = (_dvs), \
|
||||
}
|
||||
|
||||
#define BD71815_BUCK_REG(_name, _id, vsel, ereg, min, max, step, _dvs) \
|
||||
[(_id)] = { \
|
||||
.desc = { \
|
||||
.name = #_name, \
|
||||
.of_match = of_match_ptr(#_name), \
|
||||
.regulators_node = of_match_ptr("regulators"), \
|
||||
.n_voltages = ((max) - (min)) / (step) + 1, \
|
||||
.ops = &bd7181x_buck_regulator_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = (_id), \
|
||||
.owner = THIS_MODULE, \
|
||||
.min_uV = (min), \
|
||||
.uV_step = (step), \
|
||||
.vsel_reg = (vsel), \
|
||||
.vsel_mask = BD71815_VOLT_MASK, \
|
||||
.enable_reg = (ereg), \
|
||||
.enable_mask = BD71815_BUCK_RUN_ON, \
|
||||
.of_parse_cb = set_hw_dvs_levels, \
|
||||
}, \
|
||||
.dvs = (_dvs), \
|
||||
}
|
||||
|
||||
#define BD71815_BUCK12_REG(_name, _id, vsel, ereg, min, max, step, \
|
||||
_dvs) \
|
||||
[(_id)] = { \
|
||||
.desc = { \
|
||||
.name = #_name, \
|
||||
.of_match = of_match_ptr(#_name), \
|
||||
.regulators_node = of_match_ptr("regulators"), \
|
||||
.n_voltages = ((max) - (min)) / (step) + 1, \
|
||||
.ops = &bd7181x_buck12_regulator_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = (_id), \
|
||||
.owner = THIS_MODULE, \
|
||||
.min_uV = (min), \
|
||||
.uV_step = (step), \
|
||||
.vsel_reg = (vsel), \
|
||||
.vsel_mask = 0x3f, \
|
||||
.enable_reg = (ereg), \
|
||||
.enable_mask = 0x04, \
|
||||
.ramp_reg = (ereg), \
|
||||
.ramp_mask = BD71815_BUCK_RAMPRATE_MASK, \
|
||||
.ramp_delay_table = bd7181x_ramp_table, \
|
||||
.n_ramp_values = ARRAY_SIZE(bd7181x_ramp_table),\
|
||||
.of_parse_cb = buck12_set_hw_dvs_levels, \
|
||||
}, \
|
||||
.dvs = (_dvs), \
|
||||
}
|
||||
|
||||
#define BD71815_LED_REG(_name, _id, csel, mask, ereg, emsk, currents) \
|
||||
[(_id)] = { \
|
||||
.desc = { \
|
||||
.name = #_name, \
|
||||
.of_match = of_match_ptr(#_name), \
|
||||
.regulators_node = of_match_ptr("regulators"), \
|
||||
.n_current_limits = ARRAY_SIZE(currents), \
|
||||
.ops = &bd7181x_led_regulator_ops, \
|
||||
.type = REGULATOR_CURRENT, \
|
||||
.id = (_id), \
|
||||
.owner = THIS_MODULE, \
|
||||
.curr_table = currents, \
|
||||
.csel_reg = (csel), \
|
||||
.csel_mask = (mask), \
|
||||
.enable_reg = (ereg), \
|
||||
.enable_mask = (emsk), \
|
||||
}, \
|
||||
}
|
||||
|
||||
#define BD71815_LDO_REG(_name, _id, vsel, ereg, emsk, min, max, step, \
|
||||
_dvs) \
|
||||
[(_id)] = { \
|
||||
.desc = { \
|
||||
.name = #_name, \
|
||||
.of_match = of_match_ptr(#_name), \
|
||||
.regulators_node = of_match_ptr("regulators"), \
|
||||
.n_voltages = ((max) - (min)) / (step) + 1, \
|
||||
.ops = &bd7181x_ldo_regulator_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = (_id), \
|
||||
.owner = THIS_MODULE, \
|
||||
.min_uV = (min), \
|
||||
.uV_step = (step), \
|
||||
.vsel_reg = (vsel), \
|
||||
.vsel_mask = BD71815_VOLT_MASK, \
|
||||
.enable_reg = (ereg), \
|
||||
.enable_mask = (emsk), \
|
||||
.of_parse_cb = set_hw_dvs_levels, \
|
||||
}, \
|
||||
.dvs = (_dvs), \
|
||||
}
|
||||
|
||||
static struct bd71815_regulator bd71815_regulators[] = {
|
||||
BD71815_BUCK12_REG(buck1, BD71815_BUCK1, BD71815_REG_BUCK1_VOLT_H,
|
||||
BD71815_REG_BUCK1_MODE, 800000, 2000000, 25000,
|
||||
&buck1_dvs),
|
||||
BD71815_BUCK12_REG(buck2, BD71815_BUCK2, BD71815_REG_BUCK2_VOLT_H,
|
||||
BD71815_REG_BUCK2_MODE, 800000, 2000000, 25000,
|
||||
&buck2_dvs),
|
||||
BD71815_BUCK_REG(buck3, BD71815_BUCK3, BD71815_REG_BUCK3_VOLT,
|
||||
BD71815_REG_BUCK3_MODE, 1200000, 2700000, 50000,
|
||||
&buck3_dvs),
|
||||
BD71815_BUCK_REG(buck4, BD71815_BUCK4, BD71815_REG_BUCK4_VOLT,
|
||||
BD71815_REG_BUCK4_MODE, 1100000, 1850000, 25000,
|
||||
&buck4_dvs),
|
||||
BD71815_BUCK_REG(buck5, BD71815_BUCK5, BD71815_REG_BUCK5_VOLT,
|
||||
BD71815_REG_BUCK5_MODE, 1800000, 3300000, 50000,
|
||||
&buck5_dvs),
|
||||
BD71815_LDO_REG(ldo1, BD71815_LDO1, BD71815_REG_LDO1_VOLT,
|
||||
BD71815_REG_LDO_MODE1, LDO1_RUN_ON, 800000, 3300000,
|
||||
50000, &ldo1_dvs),
|
||||
BD71815_LDO_REG(ldo2, BD71815_LDO2, BD71815_REG_LDO2_VOLT,
|
||||
BD71815_REG_LDO_MODE2, LDO2_RUN_ON, 800000, 3300000,
|
||||
50000, &ldo2_dvs),
|
||||
/*
|
||||
* Let's default LDO3 to be enabled by SW. We can override ops if DT
|
||||
* says LDO3 should be enabled by HW when DCIN is connected.
|
||||
*/
|
||||
BD71815_LDO_REG(ldo3, BD71815_LDO3, BD71815_REG_LDO3_VOLT,
|
||||
BD71815_REG_LDO_MODE2, LDO3_RUN_ON, 800000, 3300000,
|
||||
50000, &ldo3_dvs),
|
||||
BD71815_LDO_REG(ldo4, BD71815_LDO4, BD71815_REG_LDO4_VOLT,
|
||||
BD71815_REG_LDO_MODE3, LDO4_RUN_ON, 800000, 3300000,
|
||||
50000, &ldo4_dvs),
|
||||
BD71815_LDO_REG(ldo5, BD71815_LDO5, BD71815_REG_LDO5_VOLT_H,
|
||||
BD71815_REG_LDO_MODE3, LDO5_RUN_ON, 800000, 3300000,
|
||||
50000, &ldo5_dvs),
|
||||
BD71815_FIXED_REG(ldodvref, BD71815_LDODVREF, BD71815_REG_LDO_MODE4,
|
||||
DVREF_RUN_ON, 3000000, &dvref_dvs),
|
||||
BD71815_FIXED_REG(ldolpsr, BD71815_LDOLPSR, BD71815_REG_LDO_MODE4,
|
||||
LDO_LPSR_RUN_ON, 1800000, &ldolpsr_dvs),
|
||||
BD71815_LED_REG(wled, BD71815_WLED, BD71815_REG_LED_DIMM, LED_DIMM_MASK,
|
||||
BD71815_REG_LED_CTRL, LED_RUN_ON,
|
||||
bd7181x_wled_currents),
|
||||
};
|
||||
|
||||
static int bd7181x_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct bd71815_pmic *pmic;
|
||||
struct regulator_config config = {};
|
||||
int i, ret;
|
||||
struct gpio_desc *ldo4_en;
|
||||
|
||||
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
|
||||
if (!pmic)
|
||||
return -ENOMEM;
|
||||
|
||||
memcpy(pmic->descs, bd71815_regulators, sizeof(pmic->descs));
|
||||
|
||||
pmic->dev = &pdev->dev;
|
||||
pmic->regmap = dev_get_regmap(pdev->dev.parent, NULL);
|
||||
if (!pmic->regmap) {
|
||||
dev_err(pmic->dev, "No parent regmap\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
platform_set_drvdata(pdev, pmic);
|
||||
ldo4_en = devm_gpiod_get_from_of_node(&pdev->dev,
|
||||
pdev->dev.parent->of_node,
|
||||
"rohm,vsel-gpios", 0,
|
||||
GPIOD_ASIS, "ldo4-en");
|
||||
|
||||
if (IS_ERR(ldo4_en)) {
|
||||
ret = PTR_ERR(ldo4_en);
|
||||
if (ret != -ENOENT)
|
||||
return ret;
|
||||
ldo4_en = NULL;
|
||||
}
|
||||
|
||||
/* Disable to go to ship-mode */
|
||||
ret = regmap_update_bits(pmic->regmap, BD71815_REG_PWRCTRL,
|
||||
RESTARTEN, 0);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
config.dev = pdev->dev.parent;
|
||||
config.regmap = pmic->regmap;
|
||||
|
||||
for (i = 0; i < BD71815_REGULATOR_CNT; i++) {
|
||||
struct regulator_desc *desc;
|
||||
struct regulator_dev *rdev;
|
||||
|
||||
desc = &pmic->descs[i].desc;
|
||||
if (i == BD71815_LDO4)
|
||||
config.ena_gpiod = ldo4_en;
|
||||
|
||||
config.driver_data = pmic;
|
||||
|
||||
rdev = devm_regulator_register(&pdev->dev, desc, &config);
|
||||
if (IS_ERR(rdev)) {
|
||||
dev_err(&pdev->dev,
|
||||
"failed to register %s regulator\n",
|
||||
desc->name);
|
||||
return PTR_ERR(rdev);
|
||||
}
|
||||
config.ena_gpiod = NULL;
|
||||
pmic->rdev[i] = rdev;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct platform_device_id bd7181x_pmic_id[] = {
|
||||
{ "bd71815-pmic", ROHM_CHIP_TYPE_BD71815 },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, bd7181x_pmic_id);
|
||||
|
||||
static struct platform_driver bd7181x_regulator = {
|
||||
.driver = {
|
||||
.name = "bd7181x-pmic",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = bd7181x_probe,
|
||||
.id_table = bd7181x_pmic_id,
|
||||
};
|
||||
module_platform_driver(bd7181x_regulator);
|
||||
|
||||
MODULE_AUTHOR("Tony Luo <luofc@embedinfo.com>");
|
||||
MODULE_DESCRIPTION("BD71815 voltage regulator driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_ALIAS("platform:bd7181x-pmic");
|
||||
Loading…
Reference in New Issue
Block a user