| Message ID | 1657780937-20891-3-git-send-email-u0084500@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add Richtek RT5120 PMIC support | expand |
On Thu, 14 Jul 2022, cy_huang wrote: > From: ChiYuan Huang <cy_huang@richtek.com> > > Add Richtek RT5120 PMIC I2C driver. > > Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> > --- > Since v3: > - Use a 'dev' variable and dev_err_probe to decrease the LOC in mfd. > > --- > drivers/mfd/Kconfig | 12 +++++ > drivers/mfd/Makefile | 1 + > drivers/mfd/rt5120.c | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 134 insertions(+) > create mode 100644 drivers/mfd/rt5120.c Mostly good, couple of nits. > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 3b59456..866619c 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -1127,6 +1127,18 @@ config MFD_RT5033 > sub-devices like charger, fuel gauge, flash LED, current source, > LDO and Buck. > > +config MFD_RT5120 > + tristate "Richtek RT5120 Power Management IC" > + depends on I2C > + select MFD_CORE > + select REGMAP_I2C > + select REGMAP_IRQ > + help > + The enables support for Richtek RT5120 PMIC. It includes four high > + efficiency buck converters and one LDO voltage regulator. The device > + is targeted at providing the CPU voltage, memory, I/O and peripheral > + power rails in home entertainment devices. > + > config MFD_RC5T583 > bool "Ricoh RC5T583 Power Management system device" > depends on I2C=y > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index 858cacf..27e8add 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -234,6 +234,7 @@ obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o > obj-$(CONFIG_MFD_DLN2) += dln2.o > obj-$(CONFIG_MFD_RT4831) += rt4831.o > obj-$(CONFIG_MFD_RT5033) += rt5033.o > +obj-$(CONFIG_MFD_RT5120) += rt5120.o > obj-$(CONFIG_MFD_SKY81452) += sky81452.o > > intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o > diff --git a/drivers/mfd/rt5120.c b/drivers/mfd/rt5120.c > new file mode 100644 > index 00000000..12372fa > --- /dev/null > +++ b/drivers/mfd/rt5120.c > @@ -0,0 +1,121 @@ > +// SPDX-License-Identifier: GPL-2.0+ No Copyright? > +#include <linux/i2c.h> > +#include <linux/kernel.h> > +#include <linux/mfd/core.h> > +#include <linux/module.h> > +#include <linux/mod_devicetable.h> > +#include <linux/regmap.h> > + > +#define RT5120_REG_INTENABLE 0x1D > +#define RT5120_REG_INTSTAT 0x1E > +#define RT5120_REG_FZCMODE 0x44 > + > +#define RT5120_INT_HOTDIE 0 > +#define RT5120_INT_PWRKEY_REL 5 > +#define RT5120_INT_PWRKEY_PRESS 6 > + > +static const struct regmap_range rt5120_rd_yes_ranges[] = { > + regmap_reg_range(0x03, 0x13), > + regmap_reg_range(0x1c, 0x20), > + regmap_reg_range(0x44, 0x44) > +}; > + > +static const struct regmap_range rt5120_wr_yes_ranges[] = { > + regmap_reg_range(0x06, 0x13), > + regmap_reg_range(0x1c, 0x20), > + regmap_reg_range(0x44, 0x44) > +}; > + > +static const struct regmap_access_table rt5120_rd_table = { > + .yes_ranges = rt5120_rd_yes_ranges, > + .n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges), > +}; > + > +static const struct regmap_access_table rt5120_wr_table = { > + .yes_ranges = rt5120_wr_yes_ranges, > + .n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges), > +}; > + > +static const struct regmap_config rt5120_regmap_config = { > + .reg_bits = 8, > + .val_bits = 8, > + .max_register = RT5120_REG_FZCMODE, > + > + .wr_table = &rt5120_wr_table, > + .rd_table = &rt5120_rd_table, > +}; > + > +static const struct regmap_irq rt5120_irqs[] = { > + REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8), > + REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8), > + REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8) > +}; > + > +static const struct regmap_irq_chip rt5120_irq_chip = { > + .name = "rt5120-pmic", > + .status_base = RT5120_REG_INTSTAT, > + .mask_base = RT5120_REG_INTENABLE, > + .ack_base = RT5120_REG_INTSTAT, > + .mask_invert = true, > + .use_ack = true, > + .num_regs = 1, > + .irqs = rt5120_irqs, > + .num_irqs = ARRAY_SIZE(rt5120_irqs), > +}; > + > +static const struct resource rt5120_regulator_resources[] = { > + DEFINE_RES_IRQ(RT5120_INT_HOTDIE) > +}; > + > +static const struct resource rt5120_pwrkey_resources[] = { > + DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"), > + DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release") > +}; > + > +static const struct mfd_cell rt5120_devs[] = { > + MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources), > + MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, > + "richtek,rt5120-pwrkey") This can be on one line if you want. > +}; > + > +static int rt5120_probe(struct i2c_client *i2c) > +{ > + struct device *dev = &i2c->dev; > + struct regmap *regmap; > + struct regmap_irq_chip_data *irq_data; > + int ret; > + > + regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config); > + if (IS_ERR(regmap)) > + return dev_err_probe(dev, PTR_ERR(regmap), > + "Failed to init regmap\n"); > + > + ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0, > + &rt5120_irq_chip, &irq_data); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to add irq chip\n"); "IRQ" > + return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs, > + ARRAY_SIZE(rt5120_devs), NULL, 0, > + regmap_irq_get_domain(irq_data)); > +} > + > +static const struct of_device_id rt5120_device_match_table[] = { > + { .compatible = "richtek,rt5120" }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, rt5120_device_match_table); > + > +static struct i2c_driver rt5120_driver = { > + .driver = { > + .name = "rt5120", > + .of_match_table = rt5120_device_match_table, > + }, > + .probe_new = rt5120_probe, > +}; > +module_i2c_driver(rt5120_driver); > + > +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); > +MODULE_DESCRIPTION("Richtek RT5120 I2C driver"); > +MODULE_LICENSE("GPL v2");
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3b59456..866619c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1127,6 +1127,18 @@ config MFD_RT5033 sub-devices like charger, fuel gauge, flash LED, current source, LDO and Buck. +config MFD_RT5120 + tristate "Richtek RT5120 Power Management IC" + depends on I2C + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + help + The enables support for Richtek RT5120 PMIC. It includes four high + efficiency buck converters and one LDO voltage regulator. The device + is targeted at providing the CPU voltage, memory, I/O and peripheral + power rails in home entertainment devices. + config MFD_RC5T583 bool "Ricoh RC5T583 Power Management system device" depends on I2C=y diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 858cacf..27e8add 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -234,6 +234,7 @@ obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o obj-$(CONFIG_MFD_DLN2) += dln2.o obj-$(CONFIG_MFD_RT4831) += rt4831.o obj-$(CONFIG_MFD_RT5033) += rt5033.o +obj-$(CONFIG_MFD_RT5120) += rt5120.o obj-$(CONFIG_MFD_SKY81452) += sky81452.o intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o diff --git a/drivers/mfd/rt5120.c b/drivers/mfd/rt5120.c new file mode 100644 index 00000000..12372fa --- /dev/null +++ b/drivers/mfd/rt5120.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/regmap.h> + +#define RT5120_REG_INTENABLE 0x1D +#define RT5120_REG_INTSTAT 0x1E +#define RT5120_REG_FZCMODE 0x44 + +#define RT5120_INT_HOTDIE 0 +#define RT5120_INT_PWRKEY_REL 5 +#define RT5120_INT_PWRKEY_PRESS 6 + +static const struct regmap_range rt5120_rd_yes_ranges[] = { + regmap_reg_range(0x03, 0x13), + regmap_reg_range(0x1c, 0x20), + regmap_reg_range(0x44, 0x44) +}; + +static const struct regmap_range rt5120_wr_yes_ranges[] = { + regmap_reg_range(0x06, 0x13), + regmap_reg_range(0x1c, 0x20), + regmap_reg_range(0x44, 0x44) +}; + +static const struct regmap_access_table rt5120_rd_table = { + .yes_ranges = rt5120_rd_yes_ranges, + .n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges), +}; + +static const struct regmap_access_table rt5120_wr_table = { + .yes_ranges = rt5120_wr_yes_ranges, + .n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges), +}; + +static const struct regmap_config rt5120_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = RT5120_REG_FZCMODE, + + .wr_table = &rt5120_wr_table, + .rd_table = &rt5120_rd_table, +}; + +static const struct regmap_irq rt5120_irqs[] = { + REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8), + REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8), + REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8) +}; + +static const struct regmap_irq_chip rt5120_irq_chip = { + .name = "rt5120-pmic", + .status_base = RT5120_REG_INTSTAT, + .mask_base = RT5120_REG_INTENABLE, + .ack_base = RT5120_REG_INTSTAT, + .mask_invert = true, + .use_ack = true, + .num_regs = 1, + .irqs = rt5120_irqs, + .num_irqs = ARRAY_SIZE(rt5120_irqs), +}; + +static const struct resource rt5120_regulator_resources[] = { + DEFINE_RES_IRQ(RT5120_INT_HOTDIE) +}; + +static const struct resource rt5120_pwrkey_resources[] = { + DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"), + DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release") +}; + +static const struct mfd_cell rt5120_devs[] = { + MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources), + MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, + "richtek,rt5120-pwrkey") +}; + +static int rt5120_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct regmap *regmap; + struct regmap_irq_chip_data *irq_data; + int ret; + + regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), + "Failed to init regmap\n"); + + ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0, + &rt5120_irq_chip, &irq_data); + if (ret) + return dev_err_probe(dev, ret, "Failed to add irq chip\n"); + + return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs, + ARRAY_SIZE(rt5120_devs), NULL, 0, + regmap_irq_get_domain(irq_data)); +} + +static const struct of_device_id rt5120_device_match_table[] = { + { .compatible = "richtek,rt5120" }, + {} +}; +MODULE_DEVICE_TABLE(of, rt5120_device_match_table); + +static struct i2c_driver rt5120_driver = { + .driver = { + .name = "rt5120", + .of_match_table = rt5120_device_match_table, + }, + .probe_new = rt5120_probe, +}; +module_i2c_driver(rt5120_driver); + +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); +MODULE_DESCRIPTION("Richtek RT5120 I2C driver"); +MODULE_LICENSE("GPL v2");