| Message ID | 185621c77e5eaecea239e0146ea48bc7a2648b9f.1611324968.git.matti.vaittinen@fi.rohmeurope.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Support ROHM BD9576MUF and BD9573MUF PMICs | expand |
On Fri, 22 Jan 2021, Matti Vaittinen wrote: > 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> > --- > Changes since v6: > - no changes > drivers/mfd/Kconfig | 11 ++++ > drivers/mfd/Makefile | 1 + > drivers/mfd/rohm-bd9576.c | 108 +++++++++++++++++++++++++++++++ > include/linux/mfd/rohm-bd957x.h | 59 +++++++++++++++++ > include/linux/mfd/rohm-generic.h | 2 + > 5 files changed, 181 insertions(+) > create mode 100644 drivers/mfd/rohm-bd9576.c > create mode 100644 include/linux/mfd/rohm-bd957x.h > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index bdfce7b15621..53c7c96283bd 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -1998,6 +1998,17 @@ 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 14fdb188af02..e58fae024bb2 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -262,6 +262,7 @@ 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 > > diff --git a/drivers/mfd/rohm-bd9576.c b/drivers/mfd/rohm-bd9576.c > new file mode 100644 > index 000000000000..f4dd9e438427 > --- /dev/null > +++ b/drivers/mfd/rohm-bd9576.c > @@ -0,0 +1,108 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > +// > +// Copyright (C) 2020 ROHM Semiconductors > +// > +// ROHM BD9576MUF and BD9573MUF PMIC driver No C++ comments (save the SPDX line) please. > +#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-pmic", }, > + { .name = "bd9576-wdt", }, > +}; > + > +static struct mfd_cell bd9576_mfd_cells[] = { > + { .name = "bd9576-pmic", }, > + { .name = "bd9576-wdt", }, > +}; What is a PMIC in this context? To me a PMIC is a bunch of devices. What is this probing? Maybe this is *-regulator? > +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 *mfd; > + int cells; > + unsigned long chip_type; > + > + chip_type = (unsigned long)of_device_get_match_data(&i2c->dev); > + > + switch (chip_type) { > + case ROHM_CHIP_TYPE_BD9576: > + mfd = bd9576_mfd_cells; > + cells = ARRAY_SIZE(bd9576_mfd_cells); > + break; > + case ROHM_CHIP_TYPE_BD9573: > + mfd = bd9573_mfd_cells; > + 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, mfd, cells, This nomenclature is confusing. cells and num_cells would clear it up. > + 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..3e7ca6fe5d4f > --- /dev/null > +++ b/include/linux/mfd/rohm-bd957x.h > @@ -0,0 +1,59 @@ > +/* SPDX-License-Identifier: GPL-2.0-or-later */ > +/* Copyright (C) 2020 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 Nit: Can you tab these out for improved readability please? > +#endif > diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h > index 4283b5b33e04..58b4f1a0f4af 100644 > --- a/include/linux/mfd/rohm-generic.h > +++ b/include/linux/mfd/rohm-generic.h > @@ -12,6 +12,8 @@ enum rohm_chip_type { > ROHM_CHIP_TYPE_BD71847, > ROHM_CHIP_TYPE_BD70528, > ROHM_CHIP_TYPE_BD71828, > + ROHM_CHIP_TYPE_BD9576, > + ROHM_CHIP_TYPE_BD9573, > ROHM_CHIP_TYPE_AMOUNT > }; > -- Lee Jones [李琼斯] Senior Technical Lead - Developer Services Linaro.org │ Open source software for Arm SoCs Follow Linaro: Facebook | Twitter | Blog
Hello Lee, On Tue, 2021-02-09 at 14:55 +0000, Lee Jones wrote: > On Fri, 22 Jan 2021, Matti Vaittinen wrote: > > > 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> > > --- > > + > > +static struct mfd_cell bd9573_mfd_cells[] = { > > + { .name = "bd9573-pmic", }, > > + { .name = "bd9576-wdt", }, > > +}; > > + > > +static struct mfd_cell bd9576_mfd_cells[] = { > > + { .name = "bd9576-pmic", }, > > + { .name = "bd9576-wdt", }, > > +}; > > What is a PMIC in this context? > > To me a PMIC is a bunch of devices. What is this probing? I agree. PMIC is the IC as a whole. This name was not the best one. > > Maybe this is *-regulator? That would be more descriptive and I can change this. However, it means I need to change the already applied regulator part too. Furthermore, all other ROHM PMIC drivers I've written use the <part-name>-pmic for regulators and so does a few other drivers at least for ICs from Maxim, Samsung and TI. That's why I don't think the <partname>-pmic is that confusing. If it was my decision, I would stick with the pmic for the sake of the consistency. + > > + ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, mfd, > > cells, > > This nomenclature is confusing. > > cells and num_cells would clear it up. I can change it. + > > +#define BD957X_MAX_REGISTER 0x61 > > Nit: Can you tab these out for improved readability please? Sure, no problem. Thanks for the review! Best Regards --Matti -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. "non cogito me" dixit Rene Descarte, deinde evanescavit (Thanks for the translation Simon)
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index bdfce7b15621..53c7c96283bd 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1998,6 +1998,17 @@ 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 14fdb188af02..e58fae024bb2 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -262,6 +262,7 @@ 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 diff --git a/drivers/mfd/rohm-bd9576.c b/drivers/mfd/rohm-bd9576.c new file mode 100644 index 000000000000..f4dd9e438427 --- /dev/null +++ b/drivers/mfd/rohm-bd9576.c @@ -0,0 +1,108 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// +// Copyright (C) 2020 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-pmic", }, + { .name = "bd9576-wdt", }, +}; + +static struct mfd_cell bd9576_mfd_cells[] = { + { .name = "bd9576-pmic", }, + { .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 *mfd; + int cells; + unsigned long chip_type; + + chip_type = (unsigned long)of_device_get_match_data(&i2c->dev); + + switch (chip_type) { + case ROHM_CHIP_TYPE_BD9576: + mfd = bd9576_mfd_cells; + cells = ARRAY_SIZE(bd9576_mfd_cells); + break; + case ROHM_CHIP_TYPE_BD9573: + mfd = bd9573_mfd_cells; + 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, mfd, 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..3e7ca6fe5d4f --- /dev/null +++ b/include/linux/mfd/rohm-bd957x.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Copyright (C) 2020 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 4283b5b33e04..58b4f1a0f4af 100644 --- a/include/linux/mfd/rohm-generic.h +++ b/include/linux/mfd/rohm-generic.h @@ -12,6 +12,8 @@ enum rohm_chip_type { ROHM_CHIP_TYPE_BD71847, ROHM_CHIP_TYPE_BD70528, ROHM_CHIP_TYPE_BD71828, + ROHM_CHIP_TYPE_BD9576, + ROHM_CHIP_TYPE_BD9573, ROHM_CHIP_TYPE_AMOUNT };
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> --- Changes since v6: - no changes drivers/mfd/Kconfig | 11 ++++ drivers/mfd/Makefile | 1 + drivers/mfd/rohm-bd9576.c | 108 +++++++++++++++++++++++++++++++ include/linux/mfd/rohm-bd957x.h | 59 +++++++++++++++++ include/linux/mfd/rohm-generic.h | 2 + 5 files changed, 181 insertions(+) create mode 100644 drivers/mfd/rohm-bd9576.c create mode 100644 include/linux/mfd/rohm-bd957x.h