]> git.karo-electronics.de Git - linux-beck.git/commitdiff
mfd: rt5033: Add Richtek RT5033 driver core.
authorBeomho Seo <beomho.seo@samsung.com>
Tue, 9 Dec 2014 12:03:51 +0000 (21:03 +0900)
committerLee Jones <lee.jones@linaro.org>
Thu, 22 Jan 2015 15:55:47 +0000 (15:55 +0000)
This patch adds a new driver for Richtek RT5033 driver.
RT5033 is a Multifunction device which includes battery charger, fuel gauge,
flash LED current source, LDO and synchronous Buck converter. It is interfaced
to host controller using I2C interface.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
drivers/mfd/Kconfig
drivers/mfd/Makefile
drivers/mfd/rt5033.c [new file with mode: 0644]
include/linux/mfd/rt5033-private.h [new file with mode: 0644]
include/linux/mfd/rt5033.h [new file with mode: 0644]

index 2e6b7311fabc896f082aae33779025fb7fa93b69..9cd2af660cc53554dbfada8d5360b9506c0242e6 100644 (file)
@@ -623,6 +623,18 @@ config MFD_RTSX_PCI
          types of memory cards, such as Memory Stick, Memory Stick Pro,
          Secure Digital and MultiMediaCard.
 
+config MFD_RT5033
+       tristate "Richtek RT5033 Power Management IC"
+       depends on I2C=y
+       select MFD_CORE
+       select REGMAP_I2C
+       help
+         This driver provides for the Richtek RT5033 Power Management IC,
+         which includes the I2C driver and the Core APIs. This driver provides
+         common support for accessing the device. The device supports multiple
+         sub-devices like charger, fuel gauge, flash LED, current source,
+         LDO and Buck.
+
 config MFD_RTSX_USB
        tristate "Realtek USB card reader"
        depends on USB
index 53467e21138118e881928944d5ae5651d3ca10cc..4059c247c59ab82440fd383eacde9c71f63ecbc6 100644 (file)
@@ -176,6 +176,7 @@ obj-$(CONFIG_MFD_IPAQ_MICRO)        += ipaq-micro.o
 obj-$(CONFIG_MFD_MENF21BMC)    += menf21bmc.o
 obj-$(CONFIG_MFD_HI6421_PMIC)  += hi6421-pmic-core.o
 obj-$(CONFIG_MFD_DLN2)         += dln2.o
+obj-$(CONFIG_MFD_RT5033)       += rt5033.o
 
 intel-soc-pmic-objs            := intel_soc_pmic_core.o intel_soc_pmic_crc.o
 obj-$(CONFIG_INTEL_SOC_PMIC)   += intel-soc-pmic.o
diff --git a/drivers/mfd/rt5033.c b/drivers/mfd/rt5033.c
new file mode 100644 (file)
index 0000000..db395a6
--- /dev/null
@@ -0,0 +1,142 @@
+/*
+ * MFD core driver for the Richtek RT5033.
+ *
+ * RT5033 comprises multiple sub-devices switcing charger, fuel gauge,
+ * flash LED, current source, LDO and BUCK regulators.
+ *
+ * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
+ * Author: Beomho Seo <beomho.seo@samsung.com>
+ *
+ * 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 bythe Free Software Foundation.
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/of_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/rt5033.h>
+#include <linux/mfd/rt5033-private.h>
+
+static const struct regmap_irq rt5033_irqs[] = {
+       { .mask = RT5033_PMIC_IRQ_BUCKOCP, },
+       { .mask = RT5033_PMIC_IRQ_BUCKLV, },
+       { .mask = RT5033_PMIC_IRQ_SAFELDOLV, },
+       { .mask = RT5033_PMIC_IRQ_LDOLV, },
+       { .mask = RT5033_PMIC_IRQ_OT, },
+       { .mask = RT5033_PMIC_IRQ_VDDA_UV, },
+};
+
+static const struct regmap_irq_chip rt5033_irq_chip = {
+       .name           = "rt5033",
+       .status_base    = RT5033_REG_PMIC_IRQ_STAT,
+       .mask_base      = RT5033_REG_PMIC_IRQ_CTRL,
+       .mask_invert    = true,
+       .num_regs       = 1,
+       .irqs           = rt5033_irqs,
+       .num_irqs       = ARRAY_SIZE(rt5033_irqs),
+};
+
+static const struct mfd_cell rt5033_devs[] = {
+       { .name = "rt5033-regulator", },
+       {
+               .name = "rt5033-charger",
+               .of_compatible = "richtek,rt5033-charger",
+       }, {
+               .name = "rt5033-battery",
+               .of_compatible = "richtek,rt5033-battery",
+       },
+};
+
+static const struct regmap_config rt5033_regmap_config = {
+       .reg_bits       = 8,
+       .val_bits       = 8,
+       .max_register   = RT5033_REG_END,
+};
+
+static int rt5033_i2c_probe(struct i2c_client *i2c,
+                               const struct i2c_device_id *id)
+{
+       struct rt5033_dev *rt5033;
+       unsigned int dev_id;
+       int ret;
+
+       rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL);
+       if (!rt5033)
+               return -ENOMEM;
+
+       i2c_set_clientdata(i2c, rt5033);
+       rt5033->dev = &i2c->dev;
+       rt5033->irq = i2c->irq;
+       rt5033->wakeup = true;
+
+       rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config);
+       if (IS_ERR(rt5033->regmap)) {
+               dev_err(&i2c->dev, "Failed to allocate register map.\n");
+               return PTR_ERR(rt5033->regmap);
+       }
+
+       ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id);
+       if (ret) {
+               dev_err(&i2c->dev, "Device not found\n");
+               return -ENODEV;
+       }
+       dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id);
+
+       ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq,
+                       IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+                       0, &rt5033_irq_chip, &rt5033->irq_data);
+       if (ret) {
+               dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
+                                                       rt5033->irq, ret);
+               return ret;
+       }
+
+       ret = mfd_add_devices(rt5033->dev, -1, rt5033_devs,
+                       ARRAY_SIZE(rt5033_devs), NULL, 0,
+                       regmap_irq_get_domain(rt5033->irq_data));
+       if (ret < 0) {
+               dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n");
+               return ret;
+       }
+
+       device_init_wakeup(rt5033->dev, rt5033->wakeup);
+
+       return 0;
+}
+
+static int rt5033_i2c_remove(struct i2c_client *i2c)
+{
+       mfd_remove_devices(&i2c->dev);
+
+       return 0;
+}
+
+static const struct i2c_device_id rt5033_i2c_id[] = {
+       { "rt5033", },
+       { }
+};
+MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id);
+
+static const struct of_device_id rt5033_dt_match[] = {
+       { .compatible = "richtek,rt5033", },
+       { }
+};
+
+static struct i2c_driver rt5033_driver = {
+       .driver = {
+               .name = "rt5033",
+               .of_match_table = of_match_ptr(rt5033_dt_match),
+       },
+       .probe = rt5033_i2c_probe,
+       .remove = rt5033_i2c_remove,
+       .id_table = rt5033_i2c_id,
+};
+module_i2c_driver(rt5033_driver);
+
+MODULE_ALIAS("i2c:rt5033");
+MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver");
+MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h
new file mode 100644 (file)
index 0000000..1b63fc2
--- /dev/null
@@ -0,0 +1,260 @@
+/*
+ * MFD core driver for Richtek RT5033
+ *
+ * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
+ * Author: Beomho Seo <beomho.seo@samsung.com>
+ *
+ * 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 bythe Free Software Foundation.
+ */
+
+#ifndef __RT5033_PRIVATE_H__
+#define __RT5033_PRIVATE_H__
+
+enum rt5033_reg {
+       RT5033_REG_CHG_STAT             = 0x00,
+       RT5033_REG_CHG_CTRL1            = 0x01,
+       RT5033_REG_CHG_CTRL2            = 0x02,
+       RT5033_REG_DEVICE_ID            = 0x03,
+       RT5033_REG_CHG_CTRL3            = 0x04,
+       RT5033_REG_CHG_CTRL4            = 0x05,
+       RT5033_REG_CHG_CTRL5            = 0x06,
+       RT5033_REG_RT_CTRL0             = 0x07,
+       RT5033_REG_CHG_RESET            = 0x08,
+       /* Reserved 0x09~0x18 */
+       RT5033_REG_RT_CTRL1             = 0x19,
+       /* Reserved 0x1A~0x20 */
+       RT5033_REG_FLED_FUNCTION1       = 0x21,
+       RT5033_REG_FLED_FUNCTION2       = 0x22,
+       RT5033_REG_FLED_STROBE_CTRL1    = 0x23,
+       RT5033_REG_FLED_STROBE_CTRL2    = 0x24,
+       RT5033_REG_FLED_CTRL1           = 0x25,
+       RT5033_REG_FLED_CTRL2           = 0x26,
+       RT5033_REG_FLED_CTRL3           = 0x27,
+       RT5033_REG_FLED_CTRL4           = 0x28,
+       RT5033_REG_FLED_CTRL5           = 0x29,
+       /* Reserved 0x2A~0x40 */
+       RT5033_REG_CTRL                 = 0x41,
+       RT5033_REG_BUCK_CTRL            = 0x42,
+       RT5033_REG_LDO_CTRL             = 0x43,
+       /* Reserved 0x44~0x46 */
+       RT5033_REG_MANUAL_RESET_CTRL    = 0x47,
+       /* Reserved 0x48~0x5F */
+       RT5033_REG_CHG_IRQ1             = 0x60,
+       RT5033_REG_CHG_IRQ2             = 0x61,
+       RT5033_REG_CHG_IRQ3             = 0x62,
+       RT5033_REG_CHG_IRQ1_CTRL        = 0x63,
+       RT5033_REG_CHG_IRQ2_CTRL        = 0x64,
+       RT5033_REG_CHG_IRQ3_CTRL        = 0x65,
+       RT5033_REG_LED_IRQ_STAT         = 0x66,
+       RT5033_REG_LED_IRQ_CTRL         = 0x67,
+       RT5033_REG_PMIC_IRQ_STAT        = 0x68,
+       RT5033_REG_PMIC_IRQ_CTRL        = 0x69,
+       RT5033_REG_SHDN_CTRL            = 0x6A,
+       RT5033_REG_OFF_EVENT            = 0x6B,
+
+       RT5033_REG_END,
+};
+
+/* RT5033 Charger state register */
+#define RT5033_CHG_STAT_MASK           0x20
+#define RT5033_CHG_STAT_DISCHARGING    0x00
+#define RT5033_CHG_STAT_FULL           0x10
+#define RT5033_CHG_STAT_CHARGING       0x20
+#define RT5033_CHG_STAT_NOT_CHARGING   0x30
+#define RT5033_CHG_STAT_TYPE_MASK      0x60
+#define RT5033_CHG_STAT_TYPE_PRE       0x20
+#define RT5033_CHG_STAT_TYPE_FAST      0x60
+
+/* RT5033 CHGCTRL1 register */
+#define RT5033_CHGCTRL1_IAICR_MASK     0xe0
+#define RT5033_CHGCTRL1_MODE_MASK      0x01
+
+/* RT5033 CHGCTRL2 register */
+#define RT5033_CHGCTRL2_CV_MASK                0xfc
+
+/* RT5033 CHGCTRL3 register */
+#define RT5033_CHGCTRL3_CFO_EN_MASK    0x40
+#define RT5033_CHGCTRL3_TIMER_MASK     0x38
+#define RT5033_CHGCTRL3_TIMER_EN_MASK  0x01
+
+/* RT5033 CHGCTRL4 register */
+#define RT5033_CHGCTRL4_EOC_MASK       0x07
+#define RT5033_CHGCTRL4_IPREC_MASK     0x18
+
+/* RT5033 CHGCTRL5 register */
+#define RT5033_CHGCTRL5_VPREC_MASK     0x0f
+#define RT5033_CHGCTRL5_ICHG_MASK      0xf0
+#define RT5033_CHGCTRL5_ICHG_SHIFT     0x04
+#define RT5033_CHG_MAX_CURRENT         0x0d
+
+/* RT5033 RT CTRL1 register */
+#define RT5033_RT_CTRL1_UUG_MASK       0x02
+#define RT5033_RT_HZ_MASK              0x01
+
+/* RT5033 control register */
+#define RT5033_CTRL_FCCM_BUCK_MASK             0x00
+#define RT5033_CTRL_BUCKOMS_MASK               0x01
+#define RT5033_CTRL_LDOOMS_MASK                        0x02
+#define RT5033_CTRL_SLDOOMS_MASK               0x03
+#define RT5033_CTRL_EN_BUCK_MASK               0x04
+#define RT5033_CTRL_EN_LDO_MASK                        0x05
+#define RT5033_CTRL_EN_SAFE_LDO_MASK           0x06
+#define RT5033_CTRL_LDO_SLEEP_MASK             0x07
+
+/* RT5033 BUCK control register */
+#define RT5033_BUCK_CTRL_MASK                  0x1f
+
+/* RT5033 LDO control register */
+#define RT5033_LDO_CTRL_MASK                   0x1f
+
+/* RT5033 charger property - model, manufacturer */
+
+#define RT5033_CHARGER_MODEL   "RT5033WSC Charger"
+#define RT5033_MANUFACTURER    "Richtek Technology Corporation"
+
+/*
+ * RT5033 charger fast-charge current lmits (as in CHGCTRL1 register),
+ * AICR mode limits the input current for example,
+ * the AIRC 100 mode limits the input current to 100 mA.
+ */
+#define RT5033_AICR_100_MODE                   0x20
+#define RT5033_AICR_500_MODE                   0x40
+#define RT5033_AICR_700_MODE                   0x60
+#define RT5033_AICR_900_MODE                   0x80
+#define RT5033_AICR_1500_MODE                  0xc0
+#define RT5033_AICR_2000_MODE                  0xe0
+#define RT5033_AICR_MODE_MASK                  0xe0
+
+/* RT5033 use internal timer need to set time */
+#define RT5033_FAST_CHARGE_TIMER4              0x00
+#define RT5033_FAST_CHARGE_TIMER6              0x01
+#define RT5033_FAST_CHARGE_TIMER8              0x02
+#define RT5033_FAST_CHARGE_TIMER9              0x03
+#define RT5033_FAST_CHARGE_TIMER12             0x04
+#define RT5033_FAST_CHARGE_TIMER14             0x05
+#define RT5033_FAST_CHARGE_TIMER16             0x06
+
+#define RT5033_INT_TIMER_ENABLE                        0x01
+
+/* RT5033 charger termination enable mask */
+#define RT5033_TE_ENABLE_MASK                  0x08
+
+/*
+ * RT5033 charger opa mode. RT50300 have two opa mode charger mode
+ * and boost mode for OTG
+ */
+
+#define RT5033_CHARGER_MODE                    0x00
+#define RT5033_BOOST_MODE                      0x01
+
+/* RT5033 charger termination enable */
+#define RT5033_TE_ENABLE                       0x08
+
+/* RT5033 charger CFO enable */
+#define RT5033_CFO_ENABLE                      0x40
+
+/* RT5033 charger constant charge voltage (as in CHGCTRL2 register), uV */
+#define RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN 3650000U
+#define RT5033_CHARGER_CONST_VOLTAGE_STEP_NUM   25000U
+#define RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX 4400000U
+
+/* RT5033 charger pre-charge current limits (as in CHGCTRL4 register), uA */
+#define RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN   350000U
+#define RT5033_CHARGER_PRE_CURRENT_STEP_NUM    100000U
+#define RT5033_CHARGER_PRE_CURRENT_LIMIT_MAX   650000U
+
+/* RT5033 charger fast-charge current (as in CHGCTRL5 register), uA */
+#define RT5033_CHARGER_FAST_CURRENT_MIN                700000U
+#define RT5033_CHARGER_FAST_CURRENT_STEP_NUM   100000U
+#define RT5033_CHARGER_FAST_CURRENT_MAX                2000000U
+
+/*
+ * RT5033 charger const-charge end of charger current (
+ * as in CHGCTRL4 register), uA
+ */
+#define RT5033_CHARGER_EOC_MIN                 150000U
+#define RT5033_CHARGER_EOC_REF                 300000U
+#define RT5033_CHARGER_EOC_STEP_NUM1           50000U
+#define RT5033_CHARGER_EOC_STEP_NUM2           100000U
+#define RT5033_CHARGER_EOC_MAX                 600000U
+
+/*
+ * RT5033 charger pre-charge threshold volt limits
+ * (as in CHGCTRL5 register), uV
+ */
+
+#define RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN 2300000U
+#define RT5033_CHARGER_PRE_THRESHOLD_STEP_NUM  100000U
+#define RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MAX 3800000U
+
+/*
+ * RT5033 charger enable UUG, If UUG enable MOS auto control by H/W charger
+ * circuit.
+ */
+#define RT5033_CHARGER_UUG_ENABLE              0x02
+
+/* RT5033 charger High impedance mode */
+#define RT5033_CHARGER_HZ_DISABLE              0x00
+#define RT5033_CHARGER_HZ_ENABLE               0x01
+
+/* RT5033 regulator BUCK output voltage uV */
+#define RT5033_REGULATOR_BUCK_VOLTAGE_MIN              1000000U
+#define RT5033_REGULATOR_BUCK_VOLTAGE_MAX              3000000U
+#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP             100000U
+#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM         32
+
+/* RT5033 regulator LDO output voltage uV */
+#define RT5033_REGULATOR_LDO_VOLTAGE_MIN               1200000U
+#define RT5033_REGULATOR_LDO_VOLTAGE_MAX               3000000U
+#define RT5033_REGULATOR_LDO_VOLTAGE_STEP              100000U
+#define RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM          32
+
+/* RT5033 regulator SAFE LDO output voltage uV */
+#define RT5033_REGULATOR_SAFE_LDO_VOLTAGE              4900000U
+
+enum rt5033_fuel_reg {
+       RT5033_FUEL_REG_OCV_H           = 0x00,
+       RT5033_FUEL_REG_OCV_L           = 0x01,
+       RT5033_FUEL_REG_VBAT_H          = 0x02,
+       RT5033_FUEL_REG_VBAT_L          = 0x03,
+       RT5033_FUEL_REG_SOC_H           = 0x04,
+       RT5033_FUEL_REG_SOC_L           = 0x05,
+       RT5033_FUEL_REG_CTRL_H          = 0x06,
+       RT5033_FUEL_REG_CTRL_L          = 0x07,
+       RT5033_FUEL_REG_CRATE           = 0x08,
+       RT5033_FUEL_REG_DEVICE_ID       = 0x09,
+       RT5033_FUEL_REG_AVG_VOLT_H      = 0x0A,
+       RT5033_FUEL_REG_AVG_VOLT_L      = 0x0B,
+       RT5033_FUEL_REG_CONFIG_H        = 0x0C,
+       RT5033_FUEL_REG_CONFIG_L        = 0x0D,
+       /* Reserved 0x0E~0x0F */
+       RT5033_FUEL_REG_IRQ_CTRL        = 0x10,
+       RT5033_FUEL_REG_IRQ_FLAG        = 0x11,
+       RT5033_FUEL_VMIN                = 0x12,
+       RT5033_FUEL_SMIN                = 0x13,
+       /* Reserved 0x14~0x1F */
+       RT5033_FUEL_VGCOMP1             = 0x20,
+       RT5033_FUEL_VGCOMP2             = 0x21,
+       RT5033_FUEL_VGCOMP3             = 0x22,
+       RT5033_FUEL_VGCOMP4             = 0x23,
+       /* Reserved 0x24~0xFD */
+       RT5033_FUEL_MFA_H               = 0xFE,
+       RT5033_FUEL_MFA_L               = 0xFF,
+
+       RT5033_FUEL_REG_END,
+};
+
+/* RT5033 fuel gauge battery present property */
+#define RT5033_FUEL_BAT_PRESENT                0x02
+
+/* RT5033 PMIC interrupts */
+#define RT5033_PMIC_IRQ_BUCKOCP                2
+#define RT5033_PMIC_IRQ_BUCKLV         3
+#define RT5033_PMIC_IRQ_SAFELDOLV      4
+#define RT5033_PMIC_IRQ_LDOLV          5
+#define RT5033_PMIC_IRQ_OT             6
+#define RT5033_PMIC_IRQ_VDDA_UV                7
+
+#endif /* __RT5033_PRIVATE_H__ */
diff --git a/include/linux/mfd/rt5033.h b/include/linux/mfd/rt5033.h
new file mode 100644 (file)
index 0000000..010cff4
--- /dev/null
@@ -0,0 +1,62 @@
+/*
+ * MFD core driver for the RT5033
+ *
+ * Copyright (C) 2014 Samsung Electronics
+ * Author: Beomho Seo <beomho.seo@samsung.com>
+ *
+ * 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 bythe Free Software Foundation.
+ */
+
+#ifndef __RT5033_H__
+#define __RT5033_H__
+
+#include <linux/regulator/consumer.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/power_supply.h>
+
+/* RT5033 regulator IDs */
+enum rt5033_regulators {
+       RT5033_BUCK = 0,
+       RT5033_LDO,
+       RT5033_SAFE_LDO,
+
+       RT5033_REGULATOR_NUM,
+};
+
+struct rt5033_dev {
+       struct device *dev;
+
+       struct regmap *regmap;
+       struct regmap_irq_chip_data *irq_data;
+       int irq;
+       bool wakeup;
+};
+
+struct rt5033_battery {
+       struct i2c_client       *client;
+       struct rt5033_dev       *rt5033;
+       struct regmap           *regmap;
+       struct power_supply     psy;
+};
+
+/* RT5033 charger platform data */
+struct rt5033_charger_data {
+       unsigned int pre_uamp;
+       unsigned int pre_uvolt;
+       unsigned int const_uvolt;
+       unsigned int eoc_uamp;
+       unsigned int fast_uamp;
+};
+
+struct rt5033_charger {
+       struct device           *dev;
+       struct rt5033_dev       *rt5033;
+       struct power_supply     psy;
+
+       struct rt5033_charger_data      *chg;
+};
+
+#endif /* __RT5033_H__ */