mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-18 03:23:53 -04:00
regulator: Use container_of_const() when all types are
Merge series from Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>: Use container_of_const(), which is preferred over container_of(), when the argument 'ptr' and returned pointer are already const, for better code safety and readability. Some drivers already have const everywhere, so container_of_const can be directly used. In few other drivers, the final pointer can be constified that way.
This commit is contained in:
Mark Brown
@@ -605,6 +605,22 @@ config MFD_MX25_TSADC
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i.MX25 processors. They consist of a conversion queue for general
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purpose ADC and a queue for Touchscreens.
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config MFD_PF1550
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tristate "NXP PF1550 PMIC Support"
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depends on I2C=y && OF
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select MFD_CORE
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select REGMAP_I2C
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select REGMAP_IRQ
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help
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Say yes here to add support for NXP PF1550. This is a companion Power
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Management IC with regulators, onkey, and charger control on chip.
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This driver provides common support for accessing the device;
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additional drivers must be enabled in order to use the functionality
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of the device.
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This driver can also be built as a module and if so will be called
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pf1550.
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config MFD_HI6421_PMIC
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tristate "HiSilicon Hi6421 PMU/Codec IC"
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depends on OF
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@@ -122,6 +122,8 @@ obj-$(CONFIG_MFD_MC13XXX) += mc13xxx-core.o
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obj-$(CONFIG_MFD_MC13XXX_SPI) += mc13xxx-spi.o
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obj-$(CONFIG_MFD_MC13XXX_I2C) += mc13xxx-i2c.o
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obj-$(CONFIG_MFD_PF1550) += pf1550.o
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obj-$(CONFIG_MFD_NCT6694) += nct6694.o
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obj-$(CONFIG_MFD_CORE) += mfd-core.o
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367
drivers/mfd/pf1550.c
Normal file
367
drivers/mfd/pf1550.c
Normal file
@@ -0,0 +1,367 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Core 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/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/pf1550.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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static const struct regmap_config pf1550_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = PF1550_PMIC_REG_END,
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};
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static const struct regmap_irq pf1550_irqs[] = {
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REGMAP_IRQ_REG(PF1550_IRQ_CHG, 0, IRQ_CHG),
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REGMAP_IRQ_REG(PF1550_IRQ_REGULATOR, 0, IRQ_REGULATOR),
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REGMAP_IRQ_REG(PF1550_IRQ_ONKEY, 0, IRQ_ONKEY),
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};
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static const struct regmap_irq_chip pf1550_irq_chip = {
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.name = "pf1550",
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.status_base = PF1550_PMIC_REG_INT_CATEGORY,
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.init_ack_masked = 1,
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.num_regs = 1,
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.irqs = pf1550_irqs,
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.num_irqs = ARRAY_SIZE(pf1550_irqs),
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};
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static const struct regmap_irq pf1550_regulator_irqs[] = {
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW1_LS, 0, PMIC_IRQ_SW1_LS),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW2_LS, 0, PMIC_IRQ_SW2_LS),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW3_LS, 0, PMIC_IRQ_SW3_LS),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW1_HS, 3, PMIC_IRQ_SW1_HS),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW2_HS, 3, PMIC_IRQ_SW2_HS),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_SW3_HS, 3, PMIC_IRQ_SW3_HS),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_LDO1_FAULT, 16, PMIC_IRQ_LDO1_FAULT),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_LDO2_FAULT, 16, PMIC_IRQ_LDO2_FAULT),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_LDO3_FAULT, 16, PMIC_IRQ_LDO3_FAULT),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_TEMP_110, 24, PMIC_IRQ_TEMP_110),
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REGMAP_IRQ_REG(PF1550_PMIC_IRQ_TEMP_125, 24, PMIC_IRQ_TEMP_125),
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};
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static const struct regmap_irq_chip pf1550_regulator_irq_chip = {
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.name = "pf1550-regulator",
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.status_base = PF1550_PMIC_REG_SW_INT_STAT0,
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.ack_base = PF1550_PMIC_REG_SW_INT_STAT0,
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.mask_base = PF1550_PMIC_REG_SW_INT_MASK0,
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.use_ack = 1,
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.init_ack_masked = 1,
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.num_regs = 25,
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.irqs = pf1550_regulator_irqs,
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.num_irqs = ARRAY_SIZE(pf1550_regulator_irqs),
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};
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static const struct resource regulator_resources[] = {
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW1_LS),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW2_LS),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW3_LS),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW1_HS),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW2_HS),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_SW3_HS),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_LDO1_FAULT),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_LDO2_FAULT),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_LDO3_FAULT),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_TEMP_110),
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DEFINE_RES_IRQ(PF1550_PMIC_IRQ_TEMP_125),
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};
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static const struct regmap_irq pf1550_onkey_irqs[] = {
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REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_PUSHI, 0, ONKEY_IRQ_PUSHI),
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REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_1SI, 0, ONKEY_IRQ_1SI),
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REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_2SI, 0, ONKEY_IRQ_2SI),
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REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_3SI, 0, ONKEY_IRQ_3SI),
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REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_4SI, 0, ONKEY_IRQ_4SI),
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REGMAP_IRQ_REG(PF1550_ONKEY_IRQ_8SI, 0, ONKEY_IRQ_8SI),
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};
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static const struct regmap_irq_chip pf1550_onkey_irq_chip = {
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.name = "pf1550-onkey",
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.status_base = PF1550_PMIC_REG_ONKEY_INT_STAT0,
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.ack_base = PF1550_PMIC_REG_ONKEY_INT_STAT0,
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.mask_base = PF1550_PMIC_REG_ONKEY_INT_MASK0,
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.use_ack = 1,
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.init_ack_masked = 1,
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.num_regs = 1,
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.irqs = pf1550_onkey_irqs,
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.num_irqs = ARRAY_SIZE(pf1550_onkey_irqs),
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};
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static const struct resource onkey_resources[] = {
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DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_PUSHI),
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DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_1SI),
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DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_2SI),
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DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_3SI),
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DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_4SI),
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DEFINE_RES_IRQ(PF1550_ONKEY_IRQ_8SI),
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};
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static const struct regmap_irq pf1550_charger_irqs[] = {
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REGMAP_IRQ_REG(PF1550_CHARG_IRQ_BAT2SOCI, 0, CHARG_IRQ_BAT2SOCI),
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REGMAP_IRQ_REG(PF1550_CHARG_IRQ_BATI, 0, CHARG_IRQ_BATI),
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REGMAP_IRQ_REG(PF1550_CHARG_IRQ_CHGI, 0, CHARG_IRQ_CHGI),
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REGMAP_IRQ_REG(PF1550_CHARG_IRQ_VBUSI, 0, CHARG_IRQ_VBUSI),
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REGMAP_IRQ_REG(PF1550_CHARG_IRQ_THMI, 0, CHARG_IRQ_THMI),
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};
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static const struct regmap_irq_chip pf1550_charger_irq_chip = {
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.name = "pf1550-charger",
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.status_base = PF1550_CHARG_REG_CHG_INT,
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.ack_base = PF1550_CHARG_REG_CHG_INT,
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.mask_base = PF1550_CHARG_REG_CHG_INT_MASK,
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.use_ack = 1,
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.init_ack_masked = 1,
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.num_regs = 1,
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.irqs = pf1550_charger_irqs,
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.num_irqs = ARRAY_SIZE(pf1550_charger_irqs),
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};
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static const struct resource charger_resources[] = {
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DEFINE_RES_IRQ(PF1550_CHARG_IRQ_BAT2SOCI),
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DEFINE_RES_IRQ(PF1550_CHARG_IRQ_BATI),
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DEFINE_RES_IRQ(PF1550_CHARG_IRQ_CHGI),
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DEFINE_RES_IRQ(PF1550_CHARG_IRQ_VBUSI),
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DEFINE_RES_IRQ(PF1550_CHARG_IRQ_THMI),
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};
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static const struct mfd_cell pf1550_regulator_cell = {
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.name = "pf1550-regulator",
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.num_resources = ARRAY_SIZE(regulator_resources),
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.resources = regulator_resources,
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};
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static const struct mfd_cell pf1550_onkey_cell = {
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.name = "pf1550-onkey",
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.num_resources = ARRAY_SIZE(onkey_resources),
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.resources = onkey_resources,
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};
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static const struct mfd_cell pf1550_charger_cell = {
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.name = "pf1550-charger",
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.num_resources = ARRAY_SIZE(charger_resources),
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.resources = charger_resources,
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};
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/*
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* The PF1550 is shipped in variants of A0, A1,...A9. Each variant defines a
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* configuration of the PMIC in a One-Time Programmable (OTP) memory.
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* This memory is accessed indirectly by writing valid keys to specific
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* registers of the PMIC. To read the OTP memory after writing the valid keys,
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* the OTP register address to be read is written to pf1550 register 0xc4 and
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* its value read from pf1550 register 0xc5.
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*/
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static int pf1550_read_otp(const struct pf1550_ddata *pf1550, unsigned int index,
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unsigned int *val)
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{
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int ret = 0;
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ret = regmap_write(pf1550->regmap, PF1550_PMIC_REG_KEY, PF1550_OTP_PMIC_KEY);
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if (ret)
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goto read_err;
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ret = regmap_write(pf1550->regmap, PF1550_CHARG_REG_CHGR_KEY2, PF1550_OTP_CHGR_KEY);
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if (ret)
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goto read_err;
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ret = regmap_write(pf1550->regmap, PF1550_TEST_REG_KEY3, PF1550_OTP_TEST_KEY);
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if (ret)
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goto read_err;
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ret = regmap_write(pf1550->regmap, PF1550_TEST_REG_FMRADDR, index);
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if (ret)
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goto read_err;
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ret = regmap_read(pf1550->regmap, PF1550_TEST_REG_FMRDATA, val);
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if (ret)
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goto read_err;
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return 0;
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read_err:
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return dev_err_probe(pf1550->dev, ret, "OTP reg %x not found!\n", index);
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}
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static int pf1550_i2c_probe(struct i2c_client *i2c)
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{
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const struct mfd_cell *regulator = &pf1550_regulator_cell;
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const struct mfd_cell *charger = &pf1550_charger_cell;
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const struct mfd_cell *onkey = &pf1550_onkey_cell;
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unsigned int reg_data = 0, otp_data = 0;
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struct pf1550_ddata *pf1550;
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struct irq_domain *domain;
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int irq, ret = 0;
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pf1550 = devm_kzalloc(&i2c->dev, sizeof(*pf1550), GFP_KERNEL);
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if (!pf1550)
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return -ENOMEM;
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i2c_set_clientdata(i2c, pf1550);
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pf1550->dev = &i2c->dev;
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pf1550->irq = i2c->irq;
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pf1550->regmap = devm_regmap_init_i2c(i2c, &pf1550_regmap_config);
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if (IS_ERR(pf1550->regmap))
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return dev_err_probe(pf1550->dev, PTR_ERR(pf1550->regmap),
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"failed to allocate register map\n");
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ret = regmap_read(pf1550->regmap, PF1550_PMIC_REG_DEVICE_ID, ®_data);
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if (ret < 0)
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return dev_err_probe(pf1550->dev, ret, "cannot read chip ID\n");
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if (reg_data != PF1550_DEVICE_ID)
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return dev_err_probe(pf1550->dev, -ENODEV, "invalid device ID: 0x%02x\n", reg_data);
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/* Regulator DVS for SW2 */
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ret = pf1550_read_otp(pf1550, PF1550_OTP_SW2_SW3, &otp_data);
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if (ret)
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return ret;
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/* When clear, DVS should be enabled */
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if (!(otp_data & OTP_SW2_DVS_ENB))
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pf1550->dvs2_enable = true;
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/* Regulator DVS for SW1 */
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ret = pf1550_read_otp(pf1550, PF1550_OTP_SW1_SW2, &otp_data);
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if (ret)
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return ret;
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if (!(otp_data & OTP_SW1_DVS_ENB))
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pf1550->dvs1_enable = true;
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/* Add top level interrupts */
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ret = devm_regmap_add_irq_chip(pf1550->dev, pf1550->regmap, pf1550->irq,
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IRQF_ONESHOT | IRQF_SHARED |
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IRQF_TRIGGER_FALLING,
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0, &pf1550_irq_chip,
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&pf1550->irq_data);
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if (ret)
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return ret;
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/* Add regulator */
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irq = regmap_irq_get_virq(pf1550->irq_data, PF1550_IRQ_REGULATOR);
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if (irq < 0)
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return dev_err_probe(pf1550->dev, irq,
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"Failed to get parent vIRQ(%d) for chip %s\n",
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PF1550_IRQ_REGULATOR, pf1550_irq_chip.name);
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ret = devm_regmap_add_irq_chip(pf1550->dev, pf1550->regmap, irq,
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IRQF_ONESHOT | IRQF_SHARED |
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IRQF_TRIGGER_FALLING, 0,
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&pf1550_regulator_irq_chip,
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&pf1550->irq_data_regulator);
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if (ret)
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return dev_err_probe(pf1550->dev, ret, "Failed to add %s IRQ chip\n",
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pf1550_regulator_irq_chip.name);
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domain = regmap_irq_get_domain(pf1550->irq_data_regulator);
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ret = devm_mfd_add_devices(pf1550->dev, PLATFORM_DEVID_NONE, regulator, 1, NULL, 0, domain);
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if (ret)
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return ret;
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/* Add onkey */
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irq = regmap_irq_get_virq(pf1550->irq_data, PF1550_IRQ_ONKEY);
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if (irq < 0)
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return dev_err_probe(pf1550->dev, irq,
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"Failed to get parent vIRQ(%d) for chip %s\n",
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PF1550_IRQ_ONKEY, pf1550_irq_chip.name);
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ret = devm_regmap_add_irq_chip(pf1550->dev, pf1550->regmap, irq,
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IRQF_ONESHOT | IRQF_SHARED |
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IRQF_TRIGGER_FALLING, 0,
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&pf1550_onkey_irq_chip,
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&pf1550->irq_data_onkey);
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if (ret)
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return dev_err_probe(pf1550->dev, ret, "Failed to add %s IRQ chip\n",
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pf1550_onkey_irq_chip.name);
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domain = regmap_irq_get_domain(pf1550->irq_data_onkey);
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ret = devm_mfd_add_devices(pf1550->dev, PLATFORM_DEVID_NONE, onkey, 1, NULL, 0, domain);
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if (ret)
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return ret;
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|
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/* Add battery charger */
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irq = regmap_irq_get_virq(pf1550->irq_data, PF1550_IRQ_CHG);
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if (irq < 0)
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return dev_err_probe(pf1550->dev, irq,
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"Failed to get parent vIRQ(%d) for chip %s\n",
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PF1550_IRQ_CHG, pf1550_irq_chip.name);
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ret = devm_regmap_add_irq_chip(pf1550->dev, pf1550->regmap, irq,
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IRQF_ONESHOT | IRQF_SHARED |
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IRQF_TRIGGER_FALLING, 0,
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&pf1550_charger_irq_chip,
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&pf1550->irq_data_charger);
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if (ret)
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return dev_err_probe(pf1550->dev, ret, "Failed to add %s IRQ chip\n",
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pf1550_charger_irq_chip.name);
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domain = regmap_irq_get_domain(pf1550->irq_data_charger);
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return devm_mfd_add_devices(pf1550->dev, PLATFORM_DEVID_NONE, charger, 1, NULL, 0, domain);
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}
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static int pf1550_suspend(struct device *dev)
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{
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struct pf1550_ddata *pf1550 = dev_get_drvdata(dev);
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if (device_may_wakeup(dev)) {
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enable_irq_wake(pf1550->irq);
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disable_irq(pf1550->irq);
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}
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return 0;
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}
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static int pf1550_resume(struct device *dev)
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{
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struct pf1550_ddata *pf1550 = dev_get_drvdata(dev);
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if (device_may_wakeup(dev)) {
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disable_irq_wake(pf1550->irq);
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enable_irq(pf1550->irq);
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}
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return 0;
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}
|
||||
static DEFINE_SIMPLE_DEV_PM_OPS(pf1550_pm, pf1550_suspend, pf1550_resume);
|
||||
|
||||
static const struct i2c_device_id pf1550_i2c_id[] = {
|
||||
{ "pf1550" },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, pf1550_i2c_id);
|
||||
|
||||
static const struct of_device_id pf1550_dt_match[] = {
|
||||
{ .compatible = "nxp,pf1550" },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, pf1550_dt_match);
|
||||
|
||||
static struct i2c_driver pf1550_i2c_driver = {
|
||||
.driver = {
|
||||
.name = "pf1550",
|
||||
.pm = pm_sleep_ptr(&pf1550_pm),
|
||||
.of_match_table = pf1550_dt_match,
|
||||
},
|
||||
.probe = pf1550_i2c_probe,
|
||||
.id_table = pf1550_i2c_id,
|
||||
};
|
||||
module_i2c_driver(pf1550_i2c_driver);
|
||||
|
||||
MODULE_DESCRIPTION("NXP PF1550 core driver");
|
||||
MODULE_AUTHOR("Robin Gong <yibin.gong@freescale.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Reference in New Issue
Block a user