On Sat, 30 Aug 2014, Beniamino Galvani wrote: > Ricoh RN5T618 is a power management IC which integrates 3 step-down > DCDC converters, 7 low-dropout regulators, a Li-ion battery charger, > fuel gauge, ADC, GPIOs and a watchdog timer. > > This commit adds a MFD core driver to support the I2C communication > with the device. > > Signed-off-by: Beniamino Galvani <b.galvani@xxxxxxxxx> > --- > drivers/mfd/Kconfig | 11 +++ > drivers/mfd/Makefile | 1 + > drivers/mfd/rn5t618.c | 134 +++++++++++++++++++++++++ > include/linux/mfd/rn5t618.h | 228 +++++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 374 insertions(+) > create mode 100644 drivers/mfd/rn5t618.c > create mode 100644 include/linux/mfd/rn5t618.h Applied thanks. > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 8d5fad2..843da5d 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -582,6 +582,17 @@ config MFD_RC5T583 > Additional drivers must be enabled in order to use the > different functionality of the device. > > +config MFD_RN5T618 > + tristate "Ricoh RN5T5618 PMIC" > + depends on I2C > + select MFD_CORE > + select REGMAP_I2C > + help > + Say yes here to add support for the Ricoh RN5T618 PMIC. This > + driver provides common support for accessing the device, > + additional drivers must be enabled in order to use the > + functionality of the device. > + > config MFD_SEC_CORE > bool "SAMSUNG Electronics PMIC Series Support" > depends on I2C=y > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index f001487..b945899 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -160,6 +160,7 @@ obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o > obj-$(CONFIG_MFD_PALMAS) += palmas.o > obj-$(CONFIG_MFD_VIPERBOARD) += viperboard.o > obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o > +obj-$(CONFIG_MFD_RN5T618) += rn5t618.o > obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o > obj-$(CONFIG_MFD_SYSCON) += syscon.o > obj-$(CONFIG_MFD_LM3533) += lm3533-core.o lm3533-ctrlbank.o > diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c > new file mode 100644 > index 0000000..6668571 > --- /dev/null > +++ b/drivers/mfd/rn5t618.c > @@ -0,0 +1,134 @@ > +/* > + * MFD core driver for Ricoh RN5T618 PMIC > + * > + * Copyright (C) 2014 Beniamino Galvani <b.galvani@xxxxxxxxx> > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License > + * version 2 as published by the Free Software Foundation. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program. If not, see <http://www.gnu.org/licenses/>. > + */ > + > +#include <linux/i2c.h> > +#include <linux/mfd/core.h> > +#include <linux/mfd/rn5t618.h> > +#include <linux/module.h> > +#include <linux/regmap.h> > + > +static const struct mfd_cell rn5t618_cells[] = { > + { .name = "rn5t618-regulator" }, > + { .name = "rn5t618-wdt" }, > +}; > + > +static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg) > +{ > + switch (reg) { > + case RN5T618_WATCHDOGCNT: > + case RN5T618_DCIRQ: > + case RN5T618_ILIMDATAH ... RN5T618_AIN0DATAL: > + case RN5T618_IR_ADC1 ... RN5T618_IR_ADC3: > + case RN5T618_IR_GPR: > + case RN5T618_IR_GPF: > + case RN5T618_MON_IOIN: > + case RN5T618_INTMON: > + return true; > + default: > + return false; > + } > +} > + > +static const struct regmap_config rn5t618_regmap_config = { > + .reg_bits = 8, > + .val_bits = 8, > + .volatile_reg = rn5t618_volatile_reg, > + .max_register = RN5T618_MAX_REG, > + .cache_type = REGCACHE_RBTREE, > +}; > + > +static struct rn5t618 *rn5t618_pm_power_off; > + > +static void rn5t618_power_off(void) > +{ > + /* disable automatic repower-on */ > + regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_REPCNT, > + RN5T618_REPCNT_REPWRON, 0); > + /* start power-off sequence */ > + regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_SLPCNT, > + RN5T618_SLPCNT_SWPWROFF, RN5T618_SLPCNT_SWPWROFF); > +} > + > +static int rn5t618_i2c_probe(struct i2c_client *i2c, > + const struct i2c_device_id *id) > +{ > + struct rn5t618 *priv; > + int ret; > + > + priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL); > + if (!priv) > + return -ENOMEM; > + > + i2c_set_clientdata(i2c, priv); > + > + priv->regmap = devm_regmap_init_i2c(i2c, &rn5t618_regmap_config); > + if (IS_ERR(priv->regmap)) { > + ret = PTR_ERR(priv->regmap); > + dev_err(&i2c->dev, "regmap init failed: %d\n", ret); > + return ret; > + } > + > + ret = mfd_add_devices(&i2c->dev, -1, rn5t618_cells, > + ARRAY_SIZE(rn5t618_cells), NULL, 0, NULL); > + if (ret) { > + dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret); > + return ret; > + } > + > + if (!pm_power_off) { > + rn5t618_pm_power_off = priv; > + pm_power_off = rn5t618_power_off; > + } > + > + return 0; > +} > + > +static int rn5t618_i2c_remove(struct i2c_client *i2c) > +{ > + struct rn5t618 *priv = i2c_get_clientdata(i2c); > + > + if (priv == rn5t618_pm_power_off) { > + rn5t618_pm_power_off = NULL; > + pm_power_off = NULL; > + } > + > + mfd_remove_devices(&i2c->dev); > + return 0; > +} > + > +static const struct of_device_id rn5t618_of_match[] = { > + { .compatible = "ricoh,rn5t618" }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, rn5t618_of_match); > + > +static const struct i2c_device_id rn5t618_i2c_id[] = { > + { } > +}; > +MODULE_DEVICE_TABLE(i2c, rn5t618_i2c_id); > + > +static struct i2c_driver rn5t618_i2c_driver = { > + .driver = { > + .name = "rn5t618", > + .of_match_table = of_match_ptr(rn5t618_of_match), > + }, > + .probe = rn5t618_i2c_probe, > + .remove = rn5t618_i2c_remove, > + .id_table = rn5t618_i2c_id, > +}; > + > +module_i2c_driver(rn5t618_i2c_driver); > + > +MODULE_AUTHOR("Beniamino Galvani <b.galvani@xxxxxxxxx>"); > +MODULE_DESCRIPTION("Ricoh RN5T618 MFD driver"); > +MODULE_LICENSE("GPL v2"); > diff --git a/include/linux/mfd/rn5t618.h b/include/linux/mfd/rn5t618.h > new file mode 100644 > index 0000000..c72d534 > --- /dev/null > +++ b/include/linux/mfd/rn5t618.h > @@ -0,0 +1,228 @@ > +/* > + * MFD core driver for Ricoh RN5T618 PMIC > + * > + * Copyright (C) 2014 Beniamino Galvani <b.galvani@xxxxxxxxx> > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License > + * version 2 as published by the Free Software Foundation. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program. If not, see <http://www.gnu.org/licenses/>. > + */ > + > +#ifndef __LINUX_MFD_RN5T618_H > +#define __LINUX_MFD_RN5T618_H > + > +#include <linux/regmap.h> > + > +#define RN5T618_LSIVER 0x00 > +#define RN5T618_OTPVER 0x01 > +#define RN5T618_IODAC 0x02 > +#define RN5T618_VINDAC 0x03 > +#define RN5T618_CPUCNT 0x06 > +#define RN5T618_PSWR 0x07 > +#define RN5T618_PONHIS 0x09 > +#define RN5T618_POFFHIS 0x0a > +#define RN5T618_WATCHDOG 0x0b > +#define RN5T618_WATCHDOGCNT 0x0c > +#define RN5T618_PWRFUNC 0x0d > +#define RN5T618_SLPCNT 0x0e > +#define RN5T618_REPCNT 0x0f > +#define RN5T618_PWRONTIMSET 0x10 > +#define RN5T618_NOETIMSETCNT 0x11 > +#define RN5T618_PWRIREN 0x12 > +#define RN5T618_PWRIRQ 0x13 > +#define RN5T618_PWRMON 0x14 > +#define RN5T618_PWRIRSEL 0x15 > +#define RN5T618_DC1_SLOT 0x16 > +#define RN5T618_DC2_SLOT 0x17 > +#define RN5T618_DC3_SLOT 0x18 > +#define RN5T618_LDO1_SLOT 0x1b > +#define RN5T618_LDO2_SLOT 0x1c > +#define RN5T618_LDO3_SLOT 0x1d > +#define RN5T618_LDO4_SLOT 0x1e > +#define RN5T618_LDO5_SLOT 0x1f > +#define RN5T618_PSO0_SLOT 0x25 > +#define RN5T618_PSO1_SLOT 0x26 > +#define RN5T618_PSO2_SLOT 0x27 > +#define RN5T618_PSO3_SLOT 0x28 > +#define RN5T618_LDORTC1_SLOT 0x2a > +#define RN5T618_DC1CTL 0x2c > +#define RN5T618_DC1CTL2 0x2d > +#define RN5T618_DC2CTL 0x2e > +#define RN5T618_DC2CTL2 0x2f > +#define RN5T618_DC3CTL 0x30 > +#define RN5T618_DC3CTL2 0x31 > +#define RN5T618_DC1DAC 0x36 > +#define RN5T618_DC2DAC 0x37 > +#define RN5T618_DC3DAC 0x38 > +#define RN5T618_DC1DAC_SLP 0x3b > +#define RN5T618_DC2DAC_SLP 0x3c > +#define RN5T618_DC3DAC_SLP 0x3d > +#define RN5T618_DCIREN 0x40 > +#define RN5T618_DCIRQ 0x41 > +#define RN5T618_DCIRMON 0x42 > +#define RN5T618_LDOEN1 0x44 > +#define RN5T618_LDOEN2 0x45 > +#define RN5T618_LDODIS 0x46 > +#define RN5T618_LDO1DAC 0x4c > +#define RN5T618_LDO2DAC 0x4d > +#define RN5T618_LDO3DAC 0x4e > +#define RN5T618_LDO4DAC 0x4f > +#define RN5T618_LDO5DAC 0x50 > +#define RN5T618_LDORTCDAC 0x56 > +#define RN5T618_LDORTC2DAC 0x57 > +#define RN5T618_LDO1DAC_SLP 0x58 > +#define RN5T618_LDO2DAC_SLP 0x59 > +#define RN5T618_LDO3DAC_SLP 0x5a > +#define RN5T618_LDO4DAC_SLP 0x5b > +#define RN5T618_LDO5DAC_SLP 0x5c > +#define RN5T618_ADCCNT1 0x64 > +#define RN5T618_ADCCNT2 0x65 > +#define RN5T618_ADCCNT3 0x66 > +#define RN5T618_ILIMDATAH 0x68 > +#define RN5T618_ILIMDATAL 0x69 > +#define RN5T618_VBATDATAH 0x6a > +#define RN5T618_VBATDATAL 0x6b > +#define RN5T618_VADPDATAH 0x6c > +#define RN5T618_VADPDATAL 0x6d > +#define RN5T618_VUSBDATAH 0x6e > +#define RN5T618_VUSBDATAL 0x6f > +#define RN5T618_VSYSDATAH 0x70 > +#define RN5T618_VSYSDATAL 0x71 > +#define RN5T618_VTHMDATAH 0x72 > +#define RN5T618_VTHMDATAL 0x73 > +#define RN5T618_AIN1DATAH 0x74 > +#define RN5T618_AIN1DATAL 0x75 > +#define RN5T618_AIN0DATAH 0x76 > +#define RN5T618_AIN0DATAL 0x77 > +#define RN5T618_ILIMTHL 0x78 > +#define RN5T618_ILIMTHH 0x79 > +#define RN5T618_VBATTHL 0x7a > +#define RN5T618_VBATTHH 0x7b > +#define RN5T618_VADPTHL 0x7c > +#define RN5T618_VADPTHH 0x7d > +#define RN5T618_VUSBTHL 0x7e > +#define RN5T618_VUSBTHH 0x7f > +#define RN5T618_VSYSTHL 0x80 > +#define RN5T618_VSYSTHH 0x81 > +#define RN5T618_VTHMTHL 0x82 > +#define RN5T618_VTHMTHH 0x83 > +#define RN5T618_AIN1THL 0x84 > +#define RN5T618_AIN1THH 0x85 > +#define RN5T618_AIN0THL 0x86 > +#define RN5T618_AIN0THH 0x87 > +#define RN5T618_EN_ADCIR1 0x88 > +#define RN5T618_EN_ADCIR2 0x89 > +#define RN5T618_EN_ADCIR3 0x8a > +#define RN5T618_IR_ADC1 0x8c > +#define RN5T618_IR_ADC2 0x8d > +#define RN5T618_IR_ADC3 0x8e > +#define RN5T618_IOSEL 0x90 > +#define RN5T618_IOOUT 0x91 > +#define RN5T618_GPEDGE1 0x92 > +#define RN5T618_GPEDGE2 0x93 > +#define RN5T618_EN_GPIR 0x94 > +#define RN5T618_IR_GPR 0x95 > +#define RN5T618_IR_GPF 0x96 > +#define RN5T618_MON_IOIN 0x97 > +#define RN5T618_GPLED_FUNC 0x98 > +#define RN5T618_INTPOL 0x9c > +#define RN5T618_INTEN 0x9d > +#define RN5T618_INTMON 0x9e > +#define RN5T618_PREVINDAC 0xb0 > +#define RN5T618_BATDAC 0xb1 > +#define RN5T618_CHGCTL1 0xb3 > +#define RN5T618_CHGCTL2 0xb4 > +#define RN5T618_VSYSSET 0xb5 > +#define RN5T618_REGISET1 0xb6 > +#define RN5T618_REGISET2 0xb7 > +#define RN5T618_CHGISET 0xb8 > +#define RN5T618_TIMSET 0xb9 > +#define RN5T618_BATSET1 0xba > +#define RN5T618_BATSET2 0xbb > +#define RN5T618_DIESET 0xbc > +#define RN5T618_CHGSTATE 0xbd > +#define RN5T618_CHGCTRL_IRFMASK 0xbe > +#define RN5T618_CHGSTAT_IRFMASK1 0xbf > +#define RN5T618_CHGSTAT_IRFMASK2 0xc0 > +#define RN5T618_CHGERR_IRFMASK 0xc1 > +#define RN5T618_CHGCTRL_IRR 0xc2 > +#define RN5T618_CHGSTAT_IRR1 0xc3 > +#define RN5T618_CHGSTAT_IRR2 0xc4 > +#define RN5T618_CHGERR_IRR 0xc5 > +#define RN5T618_CHGCTRL_MONI 0xc6 > +#define RN5T618_CHGSTAT_MONI1 0xc7 > +#define RN5T618_CHGSTAT_MONI2 0xc8 > +#define RN5T618_CHGERR_MONI 0xc9 > +#define RN5T618_CHGCTRL_DETMOD1 0xca > +#define RN5T618_CHGCTRL_DETMOD2 0xcb > +#define RN5T618_CHGSTAT_DETMOD1 0xcc > +#define RN5T618_CHGSTAT_DETMOD2 0xcd > +#define RN5T618_CHGSTAT_DETMOD3 0xce > +#define RN5T618_CHGERR_DETMOD1 0xcf > +#define RN5T618_CHGERR_DETMOD2 0xd0 > +#define RN5T618_CHGOSCCTL 0xd4 > +#define RN5T618_CHGOSCSCORESET1 0xd5 > +#define RN5T618_CHGOSCSCORESET2 0xd6 > +#define RN5T618_CHGOSCSCORESET3 0xd7 > +#define RN5T618_CHGOSCFREQSET1 0xd8 > +#define RN5T618_CHGOSCFREQSET2 0xd9 > +#define RN5T618_CONTROL 0xe0 > +#define RN5T618_SOC 0xe1 > +#define RN5T618_RE_CAP_H 0xe2 > +#define RN5T618_RE_CAP_L 0xe3 > +#define RN5T618_FA_CAP_H 0xe4 > +#define RN5T618_FA_CAP_L 0xe5 > +#define RN5T618_AGE 0xe6 > +#define RN5T618_TT_EMPTY_H 0xe7 > +#define RN5T618_TT_EMPTY_L 0xe8 > +#define RN5T618_TT_FULL_H 0xe9 > +#define RN5T618_TT_FULL_L 0xea > +#define RN5T618_VOLTAGE_1 0xeb > +#define RN5T618_VOLTAGE_0 0xec > +#define RN5T618_TEMP_1 0xed > +#define RN5T618_TEMP_0 0xee > +#define RN5T618_CC_CTRL 0xef > +#define RN5T618_CC_COUNT2 0xf0 > +#define RN5T618_CC_COUNT1 0xf1 > +#define RN5T618_CC_COUNT0 0xf2 > +#define RN5T618_CC_SUMREG3 0xf3 > +#define RN5T618_CC_SUMREG2 0xf4 > +#define RN5T618_CC_SUMREG1 0xf5 > +#define RN5T618_CC_SUMREG0 0xf6 > +#define RN5T618_CC_OFFREG1 0xf7 > +#define RN5T618_CC_OFFREG0 0xf8 > +#define RN5T618_CC_GAINREG1 0xf9 > +#define RN5T618_CC_GAINREG0 0xfa > +#define RN5T618_CC_AVEREG1 0xfb > +#define RN5T618_CC_AVEREG0 0xfc > +#define RN5T618_MAX_REG 0xfc > + > +#define RN5T618_REPCNT_REPWRON BIT(0) > +#define RN5T618_SLPCNT_SWPWROFF BIT(0) > +#define RN5T618_WATCHDOG_WDOGEN BIT(2) > +#define RN5T618_WATCHDOG_WDOGTIM_M (BIT(0) | BIT(1)) > +#define RN5T618_WATCHDOG_WDOGTIM_S 0 > +#define RN5T618_PWRIRQ_IR_WDOG BIT(6) > + > +enum { > + RN5T618_DCDC1, > + RN5T618_DCDC2, > + RN5T618_DCDC3, > + RN5T618_LDO1, > + RN5T618_LDO2, > + RN5T618_LDO3, > + RN5T618_LDO4, > + RN5T618_LDO5, > + RN5T618_LDORTC1, > + RN5T618_LDORTC2, > + RN5T618_REG_NUM, > +}; > + > +struct rn5t618 { > + struct regmap *regmap; > +}; > + > +#endif /* __LINUX_MFD_RN5T618_H */ -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org 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