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regulator: pf1550: Add support for regulator
Add regulator support for the pf1550 PMIC. Signed-off-by: Samuel Kayode <samuel.kayode@savoirfairelinux.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Mark Brown <broonie@kernel.org> Tested-by: Sean Nyekjaer <sean@geanix.com> Link: https://patch.msgid.link/20251001-pf1550-v12-3-a3302aa41687@savoirfairelinux.com Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Samuel Kayode
Lee Jones
parent
ebaec90ec0
commit
7320d41c29
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@ -1086,6 +1086,15 @@ config REGULATOR_PV88090
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Say y here to support the voltage regulators and convertors
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on PV88090
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config REGULATOR_PF1550
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tristate "NXP PF1550 regulator"
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depends on MFD_PF1550
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help
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Say y here to select this option to enable the regulators on
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the PF1550 PMICs.
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This driver controls the PF1550 regulators via I2C bus.
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The regulators include three bucks and three ldos.
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config REGULATOR_PWM
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tristate "PWM voltage regulator"
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depends on PWM
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@ -128,6 +128,7 @@ obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
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obj-$(CONFIG_REGULATOR_PCA9450) += pca9450-regulator.o
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obj-$(CONFIG_REGULATOR_PF0900) += pf0900-regulator.o
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obj-$(CONFIG_REGULATOR_PF9453) += pf9453-regulator.o
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obj-$(CONFIG_REGULATOR_PF1550) += pf1550-regulator.o
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obj-$(CONFIG_REGULATOR_PF530X) += pf530x-regulator.o
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obj-$(CONFIG_REGULATOR_PF8X00) += pf8x00-regulator.o
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obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
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429
drivers/regulator/pf1550-regulator.c
Normal file
429
drivers/regulator/pf1550-regulator.c
Normal file
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@ -0,0 +1,429 @@
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// SPDX-License-Identifier: GPL-2.0
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//
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// regulator driver for the PF1550
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//
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// Copyright (C) 2016 Freescale Semiconductor, Inc.
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// Robin Gong <yibin.gong@freescale.com>
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//
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// Portions Copyright (c) 2025 Savoir-faire Linux Inc.
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// Samuel Kayode <samuel.kayode@savoirfairelinux.com>
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//
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/pf1550.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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#define PF1550_REGULATOR_IRQ_NR 11
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#define PF1550_MAX_REGULATOR 7
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struct pf1550_desc {
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struct regulator_desc desc;
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unsigned char stby_reg;
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unsigned char stby_mask;
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unsigned char stby_enable_reg;
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unsigned char stby_enable_mask;
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};
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struct pf1550_regulator_info {
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struct device *dev;
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const struct pf1550_ddata *pf1550;
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struct pf1550_desc regulator_descs[PF1550_MAX_REGULATOR];
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struct regulator_dev *rdevs[PF1550_MAX_REGULATOR];
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};
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static const int pf1550_sw12_volts[] = {
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1100000, 1200000, 1350000, 1500000, 1800000, 2500000, 3000000, 3300000,
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};
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static const int pf1550_ldo13_volts[] = {
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750000, 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000,
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1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000,
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1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000,
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2600000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000,
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};
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static int pf1550_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
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{
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int id = rdev_get_id(rdev);
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unsigned int ramp_bits = 0;
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int ret;
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if (id > PF1550_VREFDDR)
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return -EACCES;
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if (ramp_delay < 0 || ramp_delay > 6250)
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return -EINVAL;
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ramp_delay = 6250 / ramp_delay;
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ramp_bits = ramp_delay >> 1;
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ret = regmap_update_bits(rdev->regmap, rdev->desc->vsel_reg + 4, 0x10,
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ramp_bits << 4);
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if (ret < 0)
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dev_err(&rdev->dev, "ramp failed, err %d\n", ret);
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return ret;
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}
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static int pf1550_set_suspend_enable(struct regulator_dev *rdev)
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{
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const struct pf1550_desc *desc = container_of(rdev->desc,
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struct pf1550_desc,
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desc);
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unsigned int val = desc->stby_enable_mask;
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return regmap_update_bits(rdev->regmap, desc->stby_enable_reg,
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desc->stby_enable_mask, val);
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}
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static int pf1550_set_suspend_disable(struct regulator_dev *rdev)
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{
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const struct pf1550_desc *desc = container_of(rdev->desc,
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struct pf1550_desc,
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desc);
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return regmap_update_bits(rdev->regmap, desc->stby_enable_reg,
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desc->stby_enable_mask, 0);
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}
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static int pf1550_buck_set_table_suspend_voltage(struct regulator_dev *rdev,
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int uV)
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{
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const struct pf1550_desc *desc = container_of(rdev->desc,
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struct pf1550_desc,
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desc);
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int ret;
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ret = regulator_map_voltage_ascend(rdev, uV, uV);
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if (ret < 0) {
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dev_err(rdev_get_dev(rdev), "failed to map %i uV\n", uV);
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return ret;
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}
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return regmap_update_bits(rdev->regmap, desc->stby_reg,
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desc->stby_mask, ret);
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}
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static int pf1550_buck_set_linear_suspend_voltage(struct regulator_dev *rdev,
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int uV)
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{
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const struct pf1550_desc *desc = container_of(rdev->desc,
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struct pf1550_desc,
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desc);
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int ret;
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ret = regulator_map_voltage_linear(rdev, uV, uV);
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if (ret < 0) {
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dev_err(rdev_get_dev(rdev), "failed to map %i uV\n", uV);
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return ret;
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}
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return regmap_update_bits(rdev->regmap, desc->stby_reg,
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desc->stby_mask, ret);
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}
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static const struct regulator_ops pf1550_sw1_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_suspend_enable = pf1550_set_suspend_enable,
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.set_suspend_disable = pf1550_set_suspend_disable,
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.is_enabled = regulator_is_enabled_regmap,
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.list_voltage = regulator_list_voltage_table,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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.set_suspend_voltage = pf1550_buck_set_table_suspend_voltage,
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.map_voltage = regulator_map_voltage_ascend,
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.set_ramp_delay = pf1550_set_ramp_delay,
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};
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static const struct regulator_ops pf1550_sw2_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_suspend_enable = pf1550_set_suspend_enable,
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.set_suspend_disable = pf1550_set_suspend_disable,
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.is_enabled = regulator_is_enabled_regmap,
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.list_voltage = regulator_list_voltage_linear,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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.set_suspend_voltage = pf1550_buck_set_linear_suspend_voltage,
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.map_voltage = regulator_map_voltage_linear,
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.set_ramp_delay = pf1550_set_ramp_delay,
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};
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static const struct regulator_ops pf1550_ldo1_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_suspend_enable = pf1550_set_suspend_enable,
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.set_suspend_disable = pf1550_set_suspend_disable,
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.is_enabled = regulator_is_enabled_regmap,
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.list_voltage = regulator_list_voltage_table,
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.map_voltage = regulator_map_voltage_ascend,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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};
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static const struct regulator_ops pf1550_ldo2_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_suspend_enable = pf1550_set_suspend_enable,
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.set_suspend_disable = pf1550_set_suspend_disable,
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.is_enabled = regulator_is_enabled_regmap,
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.list_voltage = regulator_list_voltage_linear,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.map_voltage = regulator_map_voltage_linear,
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};
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static const struct regulator_ops pf1550_fixed_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.set_suspend_enable = pf1550_set_suspend_enable,
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.set_suspend_disable = pf1550_set_suspend_disable,
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.is_enabled = regulator_is_enabled_regmap,
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.list_voltage = regulator_list_voltage_linear,
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};
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#define PF_VREF(_chip, match, _name, voltage) { \
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.desc = { \
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.name = #_name, \
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.of_match = of_match_ptr(match), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = 1, \
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.ops = &pf1550_fixed_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = _chip ## _ ## _name, \
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.owner = THIS_MODULE, \
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.min_uV = (voltage), \
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.enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.enable_mask = 0x1, \
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}, \
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.stby_enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.stby_enable_mask = 0x2, \
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}
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#define PF_SW(_chip, match, _name, min, max, mask, step) { \
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.desc = { \
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.name = #_name, \
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.of_match = of_match_ptr(match), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = ((max) - (min)) / (step) + 1, \
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.ops = &pf1550_sw2_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = _chip ## _ ## _name, \
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.owner = THIS_MODULE, \
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.min_uV = (min), \
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.uV_step = (step), \
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.linear_min_sel = 0, \
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.vsel_reg = _chip ## _PMIC_REG_ ## _name ## _VOLT, \
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.vsel_mask = (mask), \
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.enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.enable_mask = 0x1, \
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}, \
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.stby_reg = _chip ## _PMIC_REG_ ## _name ## _STBY_VOLT, \
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.stby_mask = (mask), \
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.stby_enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.stby_enable_mask = 0x2, \
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}
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#define PF_LDO1(_chip, match, _name, mask, voltages) { \
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.desc = { \
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.name = #_name, \
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.of_match = of_match_ptr(match), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = ARRAY_SIZE(voltages), \
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.ops = &pf1550_ldo1_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = _chip ## _ ## _name, \
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.owner = THIS_MODULE, \
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.volt_table = voltages, \
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.vsel_reg = _chip ## _PMIC_REG_ ## _name ## _VOLT, \
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.vsel_mask = (mask), \
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.enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.enable_mask = 0x1, \
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}, \
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.stby_enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.stby_enable_mask = 0x2, \
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}
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#define PF_LDO2(_chip, match, _name, mask, min, max, step) { \
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.desc = { \
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.name = #_name, \
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.of_match = of_match_ptr(match), \
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.regulators_node = of_match_ptr("regulators"), \
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.n_voltages = ((max) - (min)) / (step) + 1, \
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.ops = &pf1550_ldo2_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = _chip ## _ ## _name, \
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.owner = THIS_MODULE, \
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.min_uV = (min), \
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.uV_step = (step), \
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.linear_min_sel = 0, \
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.vsel_reg = _chip ## _PMIC_REG_ ## _name ## _VOLT, \
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.vsel_mask = (mask), \
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.enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.enable_mask = 0x1, \
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}, \
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.stby_enable_reg = _chip ## _PMIC_REG_ ## _name ## _CTRL, \
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.stby_enable_mask = 0x2, \
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}
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static struct pf1550_desc pf1550_regulators[] = {
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PF_SW(PF1550, "sw1", SW1, 600000, 1387500, 0x3f, 12500),
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PF_SW(PF1550, "sw2", SW2, 600000, 1387500, 0x3f, 12500),
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PF_SW(PF1550, "sw3", SW3, 1800000, 3300000, 0xf, 100000),
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PF_VREF(PF1550, "vrefddr", VREFDDR, 1200000),
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PF_LDO1(PF1550, "ldo1", LDO1, 0x1f, pf1550_ldo13_volts),
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PF_LDO2(PF1550, "ldo2", LDO2, 0xf, 1800000, 3300000, 100000),
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PF_LDO1(PF1550, "ldo3", LDO3, 0x1f, pf1550_ldo13_volts),
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};
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static irqreturn_t pf1550_regulator_irq_handler(int irq, void *data)
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{
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struct pf1550_regulator_info *info = data;
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struct device *dev = info->dev;
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struct platform_device *pdev = to_platform_device(dev);
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int i, irq_type = -1;
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unsigned int event;
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for (i = 0; i < PF1550_REGULATOR_IRQ_NR; i++)
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if (irq == platform_get_irq(pdev, i))
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irq_type = i;
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switch (irq_type) {
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/* The _LS interrupts indicate over-current event. The _HS interrupts
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* which are more accurate and can detect catastrophic faults, issue
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* an error event. The current limit FAULT interrupt is similar to the
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* _HS'
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*/
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case PF1550_PMIC_IRQ_SW1_LS:
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case PF1550_PMIC_IRQ_SW2_LS:
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case PF1550_PMIC_IRQ_SW3_LS:
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event = REGULATOR_EVENT_OVER_CURRENT_WARN;
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for (i = 0; i < PF1550_MAX_REGULATOR; i++)
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if (!strcmp(rdev_get_name(info->rdevs[i]), "SW3"))
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regulator_notifier_call_chain(info->rdevs[i],
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event, NULL);
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break;
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case PF1550_PMIC_IRQ_SW1_HS:
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case PF1550_PMIC_IRQ_SW2_HS:
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case PF1550_PMIC_IRQ_SW3_HS:
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event = REGULATOR_EVENT_OVER_CURRENT;
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for (i = 0; i < PF1550_MAX_REGULATOR; i++)
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if (!strcmp(rdev_get_name(info->rdevs[i]), "SW3"))
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regulator_notifier_call_chain(info->rdevs[i],
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event, NULL);
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break;
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case PF1550_PMIC_IRQ_LDO1_FAULT:
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case PF1550_PMIC_IRQ_LDO2_FAULT:
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case PF1550_PMIC_IRQ_LDO3_FAULT:
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event = REGULATOR_EVENT_OVER_CURRENT;
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for (i = 0; i < PF1550_MAX_REGULATOR; i++)
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if (!strcmp(rdev_get_name(info->rdevs[i]), "LDO3"))
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regulator_notifier_call_chain(info->rdevs[i],
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event, NULL);
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break;
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case PF1550_PMIC_IRQ_TEMP_110:
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case PF1550_PMIC_IRQ_TEMP_125:
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event = REGULATOR_EVENT_OVER_TEMP;
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for (i = 0; i < PF1550_MAX_REGULATOR; i++)
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regulator_notifier_call_chain(info->rdevs[i],
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event, NULL);
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break;
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default:
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dev_err(dev, "regulator interrupt: irq %d occurred\n",
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irq_type);
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}
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return IRQ_HANDLED;
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}
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static int pf1550_regulator_probe(struct platform_device *pdev)
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{
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const struct pf1550_ddata *pf1550 = dev_get_drvdata(pdev->dev.parent);
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struct regulator_config config = { };
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struct pf1550_regulator_info *info;
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int i, irq = -1, ret = 0;
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info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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config.regmap = dev_get_regmap(pf1550->dev, NULL);
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if (!config.regmap)
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return dev_err_probe(&pdev->dev, -ENODEV,
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"failed to get parent regmap\n");
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config.dev = pf1550->dev;
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config.regmap = pf1550->regmap;
|
||||
info->dev = &pdev->dev;
|
||||
info->pf1550 = pf1550;
|
||||
|
||||
memcpy(info->regulator_descs, pf1550_regulators,
|
||||
sizeof(info->regulator_descs));
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(pf1550_regulators); i++) {
|
||||
struct regulator_desc *desc;
|
||||
|
||||
desc = &info->regulator_descs[i].desc;
|
||||
|
||||
if ((desc->id == PF1550_SW2 && !pf1550->dvs2_enable) ||
|
||||
(desc->id == PF1550_SW1 && !pf1550->dvs1_enable)) {
|
||||
/* OTP_SW2_DVS_ENB == 1? or OTP_SW1_DVS_ENB == 1? */
|
||||
desc->volt_table = pf1550_sw12_volts;
|
||||
desc->n_voltages = ARRAY_SIZE(pf1550_sw12_volts);
|
||||
desc->ops = &pf1550_sw1_ops;
|
||||
}
|
||||
|
||||
info->rdevs[i] = devm_regulator_register(&pdev->dev, desc,
|
||||
&config);
|
||||
if (IS_ERR(info->rdevs[i]))
|
||||
return dev_err_probe(&pdev->dev,
|
||||
PTR_ERR(info->rdevs[i]),
|
||||
"failed to initialize regulator-%d\n",
|
||||
i);
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, info);
|
||||
|
||||
for (i = 0; i < PF1550_REGULATOR_IRQ_NR; i++) {
|
||||
irq = platform_get_irq(pdev, i);
|
||||
if (irq < 0)
|
||||
return irq;
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
|
||||
pf1550_regulator_irq_handler,
|
||||
IRQF_NO_SUSPEND,
|
||||
"pf1550-regulator", info);
|
||||
if (ret)
|
||||
return dev_err_probe(&pdev->dev, ret,
|
||||
"failed: irq request (IRQ: %d)\n",
|
||||
i);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct platform_device_id pf1550_regulator_id[] = {
|
||||
{ "pf1550-regulator", },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, pf1550_regulator_id);
|
||||
|
||||
static struct platform_driver pf1550_regulator_driver = {
|
||||
.driver = {
|
||||
.name = "pf1550-regulator",
|
||||
},
|
||||
.probe = pf1550_regulator_probe,
|
||||
.id_table = pf1550_regulator_id,
|
||||
};
|
||||
module_platform_driver(pf1550_regulator_driver);
|
||||
|
||||
MODULE_DESCRIPTION("NXP PF1550 regulator driver");
|
||||
MODULE_AUTHOR("Robin Gong <yibin.gong@freescale.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user