diff options
| -rw-r--r-- | drivers/mfd/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mfd/rohm-bd9576.c | 109 | ||||
| -rw-r--r-- | include/linux/mfd/rohm-bd957x.h | 59 | ||||
| -rw-r--r-- | include/linux/mfd/rohm-generic.h | 2 |
5 files changed, 182 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index b74efa469e90..f0c9529e7bfd 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1989,6 +1989,17 @@ config MFD_ROHM_BD71828 Also included is a Coulomb counter, a real-time clock (RTC), and a 32.768 kHz clock gate. +config MFD_ROHM_BD957XMUF + tristate "ROHM BD9576MUF and BD9573MUF Power Management ICs" + depends on I2C=y + depends on OF + select REGMAP_I2C + select MFD_CORE + help + Select this option to get support for the ROHM BD9576MUF and + BD9573MUF Power Management ICs. BD9576 and BD9573 are primarily + designed to be used to power R-Car series processors. + config MFD_STM32_LPTIMER tristate "Support for STM32 Low-Power Timer" depends on (ARCH_STM32 && OF) || COMPILE_TEST diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 834f5463af28..d93f6f361fd3 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -261,6 +261,7 @@ obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-bd70528.o obj-$(CONFIG_MFD_ROHM_BD71828) += rohm-bd71828.o obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o +obj-$(CONFIG_MFD_ROHM_BD957XMUF) += rohm-bd9576.o obj-$(CONFIG_MFD_STMFX) += stmfx.o obj-$(CONFIG_MFD_KHADAS_MCU) += khadas-mcu.o obj-$(CONFIG_MFD_ACER_A500_EC) += acer-ec-a500.o diff --git a/drivers/mfd/rohm-bd9576.c b/drivers/mfd/rohm-bd9576.c new file mode 100644 index 000000000000..2dbda1f401e2 --- /dev/null +++ b/drivers/mfd/rohm-bd9576.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2021 ROHM Semiconductors + * + * ROHM BD9576MUF and BD9573MUF PMIC driver + */ + +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/irq.h> +#include <linux/mfd/core.h> +#include <linux/mfd/rohm-bd957x.h> +#include <linux/mfd/rohm-generic.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regmap.h> +#include <linux/types.h> + +static struct mfd_cell bd9573_mfd_cells[] = { + { .name = "bd9573-regulator", }, + { .name = "bd9576-wdt", }, +}; + +static struct mfd_cell bd9576_mfd_cells[] = { + { .name = "bd9576-regulator", }, + { .name = "bd9576-wdt", }, +}; + +static const struct regmap_range volatile_ranges[] = { + regmap_reg_range(BD957X_REG_SMRB_ASSERT, BD957X_REG_SMRB_ASSERT), + regmap_reg_range(BD957X_REG_PMIC_INTERNAL_STAT, + BD957X_REG_PMIC_INTERNAL_STAT), + regmap_reg_range(BD957X_REG_INT_THERM_STAT, BD957X_REG_INT_THERM_STAT), + regmap_reg_range(BD957X_REG_INT_OVP_STAT, BD957X_REG_INT_SYS_STAT), + regmap_reg_range(BD957X_REG_INT_MAIN_STAT, BD957X_REG_INT_MAIN_STAT), +}; + +static const struct regmap_access_table volatile_regs = { + .yes_ranges = &volatile_ranges[0], + .n_yes_ranges = ARRAY_SIZE(volatile_ranges), +}; + +static struct regmap_config bd957x_regmap = { + .reg_bits = 8, + .val_bits = 8, + .volatile_table = &volatile_regs, + .max_register = BD957X_MAX_REGISTER, + .cache_type = REGCACHE_RBTREE, +}; + +static int bd957x_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + int ret; + struct regmap *regmap; + struct mfd_cell *cells; + int num_cells; + unsigned long chip_type; + + chip_type = (unsigned long)of_device_get_match_data(&i2c->dev); + + switch (chip_type) { + case ROHM_CHIP_TYPE_BD9576: + cells = bd9576_mfd_cells; + num_cells = ARRAY_SIZE(bd9576_mfd_cells); + break; + case ROHM_CHIP_TYPE_BD9573: + cells = bd9573_mfd_cells; + num_cells = ARRAY_SIZE(bd9573_mfd_cells); + break; + default: + dev_err(&i2c->dev, "Unknown device type"); + return -EINVAL; + } + + regmap = devm_regmap_init_i2c(i2c, &bd957x_regmap); + if (IS_ERR(regmap)) { + dev_err(&i2c->dev, "Failed to initialize Regmap\n"); + return PTR_ERR(regmap); + } + + ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, cells, + num_cells, NULL, 0, NULL); + if (ret) + dev_err(&i2c->dev, "Failed to create subdevices\n"); + + return ret; +} + +static const struct of_device_id bd957x_of_match[] = { + { .compatible = "rohm,bd9576", .data = (void *)ROHM_CHIP_TYPE_BD9576, }, + { .compatible = "rohm,bd9573", .data = (void *)ROHM_CHIP_TYPE_BD9573, }, + { }, +}; +MODULE_DEVICE_TABLE(of, bd957x_of_match); + +static struct i2c_driver bd957x_drv = { + .driver = { + .name = "rohm-bd957x", + .of_match_table = bd957x_of_match, + }, + .probe = &bd957x_i2c_probe, +}; +module_i2c_driver(bd957x_drv); + +MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); +MODULE_DESCRIPTION("ROHM BD9576MUF and BD9573MUF Power Management IC driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/rohm-bd957x.h b/include/linux/mfd/rohm-bd957x.h new file mode 100644 index 000000000000..a631abb2c101 --- /dev/null +++ b/include/linux/mfd/rohm-bd957x.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Copyright (C) 2021 ROHM Semiconductors */ + +#ifndef __LINUX_MFD_BD957X_H__ +#define __LINUX_MFD_BD957X_H__ + +enum { + BD957X_VD50, + BD957X_VD18, + BD957X_VDDDR, + BD957X_VD10, + BD957X_VOUTL1, + BD957X_VOUTS1, +}; + +#define BD957X_REG_SMRB_ASSERT 0x15 +#define BD957X_REG_PMIC_INTERNAL_STAT 0x20 +#define BD957X_REG_INT_THERM_STAT 0x23 +#define BD957X_REG_INT_THERM_MASK 0x24 +#define BD957X_REG_INT_OVP_STAT 0x25 +#define BD957X_REG_INT_SCP_STAT 0x26 +#define BD957X_REG_INT_OCP_STAT 0x27 +#define BD957X_REG_INT_OVD_STAT 0x28 +#define BD957X_REG_INT_UVD_STAT 0x29 +#define BD957X_REG_INT_UVP_STAT 0x2a +#define BD957X_REG_INT_SYS_STAT 0x2b +#define BD957X_REG_INT_SYS_MASK 0x2c +#define BD957X_REG_INT_MAIN_STAT 0x30 +#define BD957X_REG_INT_MAIN_MASK 0x31 + +#define BD957X_REG_WDT_CONF 0x16 + +#define BD957X_REG_POW_TRIGGER1 0x41 +#define BD957X_REG_POW_TRIGGER2 0x42 +#define BD957X_REG_POW_TRIGGER3 0x43 +#define BD957X_REG_POW_TRIGGER4 0x44 +#define BD957X_REG_POW_TRIGGERL1 0x45 +#define BD957X_REG_POW_TRIGGERS1 0x46 + +#define BD957X_REGULATOR_EN_MASK 0xff +#define BD957X_REGULATOR_DIS_VAL 0xff + +#define BD957X_VSEL_REG_MASK 0xff + +#define BD957X_MASK_VOUT1_TUNE 0x87 +#define BD957X_MASK_VOUT2_TUNE 0x87 +#define BD957X_MASK_VOUT3_TUNE 0x1f +#define BD957X_MASK_VOUT4_TUNE 0x1f +#define BD957X_MASK_VOUTL1_TUNE 0x87 + +#define BD957X_REG_VOUT1_TUNE 0x50 +#define BD957X_REG_VOUT2_TUNE 0x53 +#define BD957X_REG_VOUT3_TUNE 0x56 +#define BD957X_REG_VOUT4_TUNE 0x59 +#define BD957X_REG_VOUTL1_TUNE 0x5c + +#define BD957X_MAX_REGISTER 0x61 + +#endif diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h index 66f673c35303..ac6787464004 100644 --- a/include/linux/mfd/rohm-generic.h +++ b/include/linux/mfd/rohm-generic.h @@ -14,6 +14,8 @@ enum rohm_chip_type { ROHM_CHIP_TYPE_BD71828, ROHM_CHIP_TYPE_BD9571, ROHM_CHIP_TYPE_BD9574, + ROHM_CHIP_TYPE_BD9576, + ROHM_CHIP_TYPE_BD9573, ROHM_CHIP_TYPE_AMOUNT }; 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