mfd: Support ROHM BD9576MUF and BD9573MUF
Add core support for ROHM BD9576MUF and BD9573MUF PMICs which are mainly used to power the R-Car series processors. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Matti Vaittinen
Lee Jones
Родитель
bd4cefe20e
Коммит
b1b3ced389
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@ -1989,6 +1989,17 @@ config MFD_ROHM_BD71828
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Also included is a Coulomb counter, a real-time clock (RTC), and
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a 32.768 kHz clock gate.
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config MFD_ROHM_BD957XMUF
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tristate "ROHM BD9576MUF and BD9573MUF Power Management ICs"
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depends on I2C=y
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depends on OF
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select REGMAP_I2C
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select MFD_CORE
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help
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Select this option to get support for the ROHM BD9576MUF and
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BD9573MUF Power Management ICs. BD9576 and BD9573 are primarily
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designed to be used to power R-Car series processors.
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config MFD_STM32_LPTIMER
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tristate "Support for STM32 Low-Power Timer"
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depends on (ARCH_STM32 && OF) || COMPILE_TEST
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@ -261,6 +261,7 @@ obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o
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obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-bd70528.o
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obj-$(CONFIG_MFD_ROHM_BD71828) += rohm-bd71828.o
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obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
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obj-$(CONFIG_MFD_ROHM_BD957XMUF) += rohm-bd9576.o
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obj-$(CONFIG_MFD_STMFX) += stmfx.o
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obj-$(CONFIG_MFD_KHADAS_MCU) += khadas-mcu.o
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obj-$(CONFIG_MFD_ACER_A500_EC) += acer-ec-a500.o
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@ -0,0 +1,109 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2021 ROHM Semiconductors
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*
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* ROHM BD9576MUF and BD9573MUF PMIC driver
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*/
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/irq.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/rohm-bd957x.h>
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#include <linux/mfd/rohm-generic.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/types.h>
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static struct mfd_cell bd9573_mfd_cells[] = {
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{ .name = "bd9573-regulator", },
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{ .name = "bd9576-wdt", },
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};
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static struct mfd_cell bd9576_mfd_cells[] = {
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{ .name = "bd9576-regulator", },
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{ .name = "bd9576-wdt", },
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};
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static const struct regmap_range volatile_ranges[] = {
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regmap_reg_range(BD957X_REG_SMRB_ASSERT, BD957X_REG_SMRB_ASSERT),
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regmap_reg_range(BD957X_REG_PMIC_INTERNAL_STAT,
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BD957X_REG_PMIC_INTERNAL_STAT),
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regmap_reg_range(BD957X_REG_INT_THERM_STAT, BD957X_REG_INT_THERM_STAT),
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regmap_reg_range(BD957X_REG_INT_OVP_STAT, BD957X_REG_INT_SYS_STAT),
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regmap_reg_range(BD957X_REG_INT_MAIN_STAT, BD957X_REG_INT_MAIN_STAT),
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};
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static const struct regmap_access_table volatile_regs = {
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.yes_ranges = &volatile_ranges[0],
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.n_yes_ranges = ARRAY_SIZE(volatile_ranges),
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};
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static struct regmap_config bd957x_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.volatile_table = &volatile_regs,
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.max_register = BD957X_MAX_REGISTER,
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.cache_type = REGCACHE_RBTREE,
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};
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static int bd957x_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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int ret;
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struct regmap *regmap;
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struct mfd_cell *cells;
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int num_cells;
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unsigned long chip_type;
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chip_type = (unsigned long)of_device_get_match_data(&i2c->dev);
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switch (chip_type) {
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case ROHM_CHIP_TYPE_BD9576:
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cells = bd9576_mfd_cells;
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num_cells = ARRAY_SIZE(bd9576_mfd_cells);
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break;
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case ROHM_CHIP_TYPE_BD9573:
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cells = bd9573_mfd_cells;
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num_cells = ARRAY_SIZE(bd9573_mfd_cells);
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break;
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default:
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dev_err(&i2c->dev, "Unknown device type");
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return -EINVAL;
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}
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regmap = devm_regmap_init_i2c(i2c, &bd957x_regmap);
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if (IS_ERR(regmap)) {
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dev_err(&i2c->dev, "Failed to initialize Regmap\n");
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return PTR_ERR(regmap);
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}
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ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, cells,
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num_cells, NULL, 0, NULL);
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if (ret)
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dev_err(&i2c->dev, "Failed to create subdevices\n");
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return ret;
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}
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static const struct of_device_id bd957x_of_match[] = {
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{ .compatible = "rohm,bd9576", .data = (void *)ROHM_CHIP_TYPE_BD9576, },
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{ .compatible = "rohm,bd9573", .data = (void *)ROHM_CHIP_TYPE_BD9573, },
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{ },
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};
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MODULE_DEVICE_TABLE(of, bd957x_of_match);
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static struct i2c_driver bd957x_drv = {
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.driver = {
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.name = "rohm-bd957x",
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.of_match_table = bd957x_of_match,
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},
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.probe = &bd957x_i2c_probe,
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};
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module_i2c_driver(bd957x_drv);
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MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
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MODULE_DESCRIPTION("ROHM BD9576MUF and BD9573MUF Power Management IC driver");
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MODULE_LICENSE("GPL");
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@ -0,0 +1,59 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* Copyright (C) 2021 ROHM Semiconductors */
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#ifndef __LINUX_MFD_BD957X_H__
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#define __LINUX_MFD_BD957X_H__
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enum {
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BD957X_VD50,
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BD957X_VD18,
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BD957X_VDDDR,
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BD957X_VD10,
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BD957X_VOUTL1,
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BD957X_VOUTS1,
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};
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#define BD957X_REG_SMRB_ASSERT 0x15
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#define BD957X_REG_PMIC_INTERNAL_STAT 0x20
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#define BD957X_REG_INT_THERM_STAT 0x23
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#define BD957X_REG_INT_THERM_MASK 0x24
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#define BD957X_REG_INT_OVP_STAT 0x25
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#define BD957X_REG_INT_SCP_STAT 0x26
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#define BD957X_REG_INT_OCP_STAT 0x27
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#define BD957X_REG_INT_OVD_STAT 0x28
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#define BD957X_REG_INT_UVD_STAT 0x29
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#define BD957X_REG_INT_UVP_STAT 0x2a
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#define BD957X_REG_INT_SYS_STAT 0x2b
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#define BD957X_REG_INT_SYS_MASK 0x2c
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#define BD957X_REG_INT_MAIN_STAT 0x30
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#define BD957X_REG_INT_MAIN_MASK 0x31
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#define BD957X_REG_WDT_CONF 0x16
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#define BD957X_REG_POW_TRIGGER1 0x41
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#define BD957X_REG_POW_TRIGGER2 0x42
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#define BD957X_REG_POW_TRIGGER3 0x43
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#define BD957X_REG_POW_TRIGGER4 0x44
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#define BD957X_REG_POW_TRIGGERL1 0x45
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#define BD957X_REG_POW_TRIGGERS1 0x46
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#define BD957X_REGULATOR_EN_MASK 0xff
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#define BD957X_REGULATOR_DIS_VAL 0xff
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#define BD957X_VSEL_REG_MASK 0xff
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#define BD957X_MASK_VOUT1_TUNE 0x87
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#define BD957X_MASK_VOUT2_TUNE 0x87
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#define BD957X_MASK_VOUT3_TUNE 0x1f
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#define BD957X_MASK_VOUT4_TUNE 0x1f
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#define BD957X_MASK_VOUTL1_TUNE 0x87
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#define BD957X_REG_VOUT1_TUNE 0x50
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#define BD957X_REG_VOUT2_TUNE 0x53
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#define BD957X_REG_VOUT3_TUNE 0x56
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#define BD957X_REG_VOUT4_TUNE 0x59
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#define BD957X_REG_VOUTL1_TUNE 0x5c
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#define BD957X_MAX_REGISTER 0x61
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#endif
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@ -14,6 +14,8 @@ enum rohm_chip_type {
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ROHM_CHIP_TYPE_BD71828,
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ROHM_CHIP_TYPE_BD9571,
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ROHM_CHIP_TYPE_BD9574,
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ROHM_CHIP_TYPE_BD9576,
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ROHM_CHIP_TYPE_BD9573,
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ROHM_CHIP_TYPE_AMOUNT
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};
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