From 0c57067430a2b729bc08c92b17eb4f29d9bbfaae Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Sat, 6 Oct 2012 20:47:46 +0530 Subject: regulator: tps51632: Add tps51632 regulator driver The TPS51632 is a driverless step down controller with serial control. Advanced features such as D-Cap+ architecture with overlapping pulse support and OSR overshoot reduction provide fast transient response, lowest output capacitance and high efficiency. The TPS51632 supports both I2C and DVFS interfaces (through PWM) for dynamic control of the output voltage and current monitor telemetry. Add regulator driver for TPS51632. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- drivers/regulator/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/regulator/Makefile') diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index e431eed8a878..ec1aec460bf6 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o +obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o -- cgit v1.2.3 From 31e54086dd7bb86ad40f1d76a9063f2a95866b87 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Mon, 24 Sep 2012 18:56:54 +0100 Subject: regulator: Versatile Express regulator driver Implementation of the regulator framework driver for the Versatile Express voltage control. Devices without voltage constraints (ie. "regulator-[min|max]-microvolt" properties in the DT node) are treated as fixed (or rather read-only) regulators. Signed-off-by: Pawel Moll Signed-off-by: Mark Brown --- .../devicetree/bindings/regulator/vexpress.txt | 32 +++++ drivers/regulator/Kconfig | 7 + drivers/regulator/Makefile | 1 + drivers/regulator/vexpress.c | 146 +++++++++++++++++++++ 4 files changed, 186 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/vexpress.txt create mode 100644 drivers/regulator/vexpress.c (limited to 'drivers/regulator/Makefile') diff --git a/Documentation/devicetree/bindings/regulator/vexpress.txt b/Documentation/devicetree/bindings/regulator/vexpress.txt new file mode 100644 index 000000000000..d775f72487aa --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/vexpress.txt @@ -0,0 +1,32 @@ +Versatile Express voltage regulators +------------------------------------ + +Requires node properties: +- "compatible" value: "arm,vexpress-volt" +- "arm,vexpress-sysreg,func" when controlled via vexpress-sysreg + (see Documentation/devicetree/bindings/arm/vexpress-sysreg.txt + for more details) + +Required regulator properties: +- "regulator-name" +- "regulator-always-on" + +Optional regulator properties: +- "regulator-min-microvolt" +- "regulator-max-microvolt" + +See Documentation/devicetree/bindings/regulator/regulator.txt +for more details about the regulator properties. + +When no "regulator-[min|max]-microvolt" properties are defined, +the device is treated as fixed (or rather "read-only") regulator. + +Example: + volt@0 { + compatible = "arm,vexpress-volt"; + arm,vexpress-sysreg,func = <2 0>; + regulator-name = "Cores"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1050000>; + regulator-always-on; + }; diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 67d47b59a66d..b44b019b9433 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -422,6 +422,13 @@ config REGULATOR_TWL4030 This driver supports the voltage regulators provided by this family of companion chips. +config REGULATOR_VEXPRESS + tristate "Versatile Express regulators" + depends on VEXPRESS_CONFIG + help + This driver provides support for voltage regulators available + on the ARM Ltd's Versatile Express platform. + config REGULATOR_WM831X tristate "Wolfson Microelectronics WM831x PMIC regulators" depends on MFD_WM831X diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index e431eed8a878..9fa7a7bc42d8 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -57,6 +57,7 @@ obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o +obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o diff --git a/drivers/regulator/vexpress.c b/drivers/regulator/vexpress.c new file mode 100644 index 000000000000..1702945a93a9 --- /dev/null +++ b/drivers/regulator/vexpress.c @@ -0,0 +1,146 @@ +/* + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Copyright (C) 2012 ARM Limited + */ + +#define DRVNAME "vexpress-regulator" +#define pr_fmt(fmt) DRVNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include + +struct vexpress_regulator { + struct regulator_desc desc; + struct regulator_dev *regdev; + struct vexpress_config_func *func; +}; + +static int vexpress_regulator_get_voltage(struct regulator_dev *regdev) +{ + struct vexpress_regulator *reg = rdev_get_drvdata(regdev); + u32 uV; + int err = vexpress_config_read(reg->func, 0, &uV); + + return err ? err : uV; +} + +static int vexpress_regulator_set_voltage(struct regulator_dev *regdev, + int min_uV, int max_uV, unsigned *selector) +{ + struct vexpress_regulator *reg = rdev_get_drvdata(regdev); + + return vexpress_config_write(reg->func, 0, min_uV); +} + +static struct regulator_ops vexpress_regulator_ops_ro = { + .get_voltage = vexpress_regulator_get_voltage, +}; + +static struct regulator_ops vexpress_regulator_ops = { + .get_voltage = vexpress_regulator_get_voltage, + .set_voltage = vexpress_regulator_set_voltage, +}; + +static int vexpress_regulator_probe(struct platform_device *pdev) +{ + int err; + struct vexpress_regulator *reg; + struct regulator_init_data *init_data; + struct regulator_config config = { }; + + reg = devm_kzalloc(&pdev->dev, sizeof(*reg), GFP_KERNEL); + if (!reg) { + err = -ENOMEM; + goto error_kzalloc; + } + + reg->func = vexpress_config_func_get_by_dev(&pdev->dev); + if (!reg->func) { + err = -ENXIO; + goto error_get_func; + } + + reg->desc.name = dev_name(&pdev->dev); + reg->desc.type = REGULATOR_VOLTAGE; + reg->desc.owner = THIS_MODULE; + reg->desc.continuous_voltage_range = true; + + init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node); + if (!init_data) { + err = -EINVAL; + goto error_get_regulator_init_data; + } + + init_data->constraints.apply_uV = 0; + if (init_data->constraints.min_uV && init_data->constraints.max_uV) + reg->desc.ops = &vexpress_regulator_ops; + else + reg->desc.ops = &vexpress_regulator_ops_ro; + + config.dev = &pdev->dev; + config.init_data = init_data; + config.driver_data = reg; + config.of_node = pdev->dev.of_node; + + reg->regdev = regulator_register(®->desc, &config); + if (IS_ERR(reg->regdev)) { + err = PTR_ERR(reg->regdev); + goto error_regulator_register; + } + + platform_set_drvdata(pdev, reg); + + return 0; + +error_regulator_register: +error_get_regulator_init_data: + vexpress_config_func_put(reg->func); +error_get_func: +error_kzalloc: + return err; +} + +static int __devexit vexpress_regulator_remove(struct platform_device *pdev) +{ + struct vexpress_regulator *reg = platform_get_drvdata(pdev); + + vexpress_config_func_put(reg->func); + regulator_unregister(reg->regdev); + + return 0; +} + +static struct of_device_id vexpress_regulator_of_match[] = { + { .compatible = "arm,vexpress-volt", }, +}; + +static struct platform_driver vexpress_regulator_driver = { + .probe = vexpress_regulator_probe, + .remove = __devexit_p(vexpress_regulator_remove), + .driver = { + .name = DRVNAME, + .owner = THIS_MODULE, + .of_match_table = vexpress_regulator_of_match, + }, +}; + +module_platform_driver(vexpress_regulator_driver); + +MODULE_AUTHOR("Pawel Moll "); +MODULE_DESCRIPTION("Versatile Express regulator"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:vexpress-regulator"); -- cgit v1.2.3 From 1a0bb679bcee5233dc5134e4f5fbf97d8caf8bbb Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Sun, 11 Nov 2012 20:42:01 +0530 Subject: regulator: tps80031: add regulator driver for tps80031 Add regulator driver for Texas Instrument TPS80031/TPS80032 device. TPS80031/ TPS80032 Fully Integrated Power Management with Power Path and Battery Charger. It has 5 configurable step-down converters, 11 general purpose LDOs, VBUS generator and digital output to control regulators. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- drivers/regulator/Kconfig | 9 + drivers/regulator/Makefile | 1 + drivers/regulator/tps80031-regulator.c | 789 +++++++++++++++++++++++++++++++++ 3 files changed, 799 insertions(+) create mode 100644 drivers/regulator/tps80031-regulator.c (limited to 'drivers/regulator/Makefile') diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 67d47b59a66d..2a1554b57104 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -415,6 +415,15 @@ config REGULATOR_TPS65912 help This driver supports TPS65912 voltage regulator chip. +config REGULATOR_TPS80031 + tristate "TI TPS80031/TPS80032 power regualtor driver" + depends on MFD_TPS80031 + help + TPS80031/ TPS80032 Fully Integrated Power Management with Power + Path and Battery Charger. It has 5 configurable step-down + converters, 11 general purpose LDOs, VBUS generator and digital + output to control regulators. + config REGULATOR_TWL4030 bool "TI TWL4030/TWL5030/TWL6030/TPS659x0 PMIC" depends on TWL4030_CORE diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index e431eed8a878..e5882668618f 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -56,6 +56,7 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o +obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o diff --git a/drivers/regulator/tps80031-regulator.c b/drivers/regulator/tps80031-regulator.c new file mode 100644 index 000000000000..04844780b56c --- /dev/null +++ b/drivers/regulator/tps80031-regulator.c @@ -0,0 +1,789 @@ +/* + * tps80031-regulator.c -- TI TPS80031 regulator driver. + * + * Regulator driver for TITPS80031/TPS80032 Fully Integrated Power + * Management with Power Path and Battery Charger. + * + * Copyright (c) 2012, NVIDIA Corporation. + * + * Author: Laxman Dewangan + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, + * whether express or implied; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Flags for DCDC Voltage reading */ +#define DCDC_OFFSET_EN BIT(0) +#define DCDC_EXTENDED_EN BIT(1) +#define TRACK_MODE_ENABLE BIT(2) + +#define SMPS_MULTOFFSET_VIO BIT(1) +#define SMPS_MULTOFFSET_SMPS1 BIT(3) +#define SMPS_MULTOFFSET_SMPS2 BIT(4) +#define SMPS_MULTOFFSET_SMPS3 BIT(6) +#define SMPS_MULTOFFSET_SMPS4 BIT(0) + +#define SMPS_CMD_MASK 0xC0 +#define SMPS_VSEL_MASK 0x3F +#define LDO_VSEL_MASK 0x1F +#define LDO_TRACK_VSEL_MASK 0x3F + +#define MISC2_LDOUSB_IN_VSYS BIT(4) +#define MISC2_LDOUSB_IN_PMID BIT(3) +#define MISC2_LDOUSB_IN_MASK 0x18 + +#define MISC2_LDO3_SEL_VIB_VAL BIT(0) +#define MISC2_LDO3_SEL_VIB_MASK 0x1 + +#define BOOST_HW_PWR_EN BIT(5) +#define BOOST_HW_PWR_EN_MASK BIT(5) + +#define OPA_MODE_EN BIT(6) +#define OPA_MODE_EN_MASK BIT(6) + +#define USB_VBUS_CTRL_SET 0x04 +#define USB_VBUS_CTRL_CLR 0x05 +#define VBUS_DISCHRG 0x20 + +struct tps80031_regulator_info { + /* Regulator register address.*/ + u8 trans_reg; + u8 state_reg; + u8 force_reg; + u8 volt_reg; + u8 volt_id; + + /*Power request bits */ + int preq_bit; + + /* used by regulator core */ + struct regulator_desc desc; + +}; + +struct tps80031_regulator { + struct device *dev; + struct regulator_dev *rdev; + struct tps80031_regulator_info *rinfo; + + u8 device_flags; + unsigned int config_flags; + unsigned int ext_ctrl_flag; +}; + +static inline struct device *to_tps80031_dev(struct regulator_dev *rdev) +{ + return rdev_get_dev(rdev)->parent->parent; +} + +static int tps80031_reg_is_enabled(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + u8 reg_val; + int ret; + + if (ri->ext_ctrl_flag & EXT_PWR_REQ) + return true; + + ret = tps80031_read(parent, SLAVE_ID1, ri->rinfo->state_reg, ®_val); + if (ret < 0) { + dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n", + ri->rinfo->state_reg, ret); + return ret; + } + return ((reg_val & STATE_MASK) == STATE_ON); +} + +static int tps80031_reg_enable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + if (ri->ext_ctrl_flag & EXT_PWR_REQ) + return 0; + + ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->state_reg, + STATE_ON, STATE_MASK); + if (ret < 0) { + dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", + ri->rinfo->state_reg, ret); + return ret; + } + return ret; +} + +static int tps80031_reg_disable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + if (ri->ext_ctrl_flag & EXT_PWR_REQ) + return 0; + + ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->state_reg, + STATE_OFF, STATE_MASK); + if (ret < 0) + dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", + ri->rinfo->state_reg, ret); + return ret; +} + +/* DCDC voltages for the selector of 58 to 63 */ +static int tps80031_dcdc_voltages[4][5] = { + { 1350, 1500, 1800, 1900, 2100}, + { 1350, 1500, 1800, 1900, 2100}, + { 2084, 2315, 2778, 2932, 3241}, + { 4167, 2315, 2778, 2932, 3241}, +}; + +static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + int volt_index = ri->device_flags & 0x3; + + if (sel == 0) + return 0; + else if (sel < 58) + return regulator_list_voltage_linear(rdev, sel - 1); + else + return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000; +} + +static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev, + unsigned vsel) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + u8 reg_val; + + if (ri->rinfo->force_reg) { + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->force_reg, ®_val); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + ri->rinfo->force_reg, ret); + return ret; + } + if (!(reg_val & SMPS_CMD_MASK)) { + ret = tps80031_update(parent, ri->rinfo->volt_id, + ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK); + if (ret < 0) + dev_err(ri->dev, + "reg 0x%02x update failed, e = %d\n", + ri->rinfo->force_reg, ret); + return ret; + } + } + ret = tps80031_update(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK); + if (ret < 0) + dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n", + ri->rinfo->volt_reg, ret); + return ret; +} + +static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + uint8_t vsel = 0; + int ret; + + if (ri->rinfo->force_reg) { + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->force_reg, &vsel); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + ri->rinfo->force_reg, ret); + return ret; + } + + if (!(vsel & SMPS_CMD_MASK)) + return vsel & SMPS_VSEL_MASK; + } + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, &vsel); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + ri->rinfo->volt_reg, ret); + return ret; + } + return vsel & SMPS_VSEL_MASK; +} + +static int tps80031_ldo_set_voltage_sel(struct regulator_dev *rdev, + unsigned sel) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + /* Check for valid setting for TPS80031 or TPS80032-ES1.0 */ + if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) && + (ri->device_flags & TRACK_MODE_ENABLE)) { + unsigned nvsel = (sel) & 0x1F; + if (((tps80031_get_chip_info(parent) == TPS80031) || + ((tps80031_get_chip_info(parent) == TPS80032) && + (tps80031_get_pmu_version(parent) == 0x0))) && + ((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) { + dev_err(ri->dev, + "Invalid sel %d in track mode LDO2\n", + nvsel); + return -EINVAL; + } + } + + ret = tps80031_write(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, sel); + if (ret < 0) + dev_err(ri->dev, "Error in writing reg 0x%02x, e = %d\n", + ri->rinfo->volt_reg, ret); + return ret; +} + +static int tps80031_ldo_get_voltage_sel(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + uint8_t vsel; + int ret; + + ret = tps80031_read(parent, ri->rinfo->volt_id, + ri->rinfo->volt_reg, &vsel); + if (ret < 0) { + dev_err(ri->dev, "Error in writing the Voltage register\n"); + return ret; + } + return vsel & rdev->desc->vsel_mask; +} + +static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, unsigned sel) +{ + if (sel == 0) + return 0; + else + return regulator_list_voltage_linear(rdev, sel - 1); +} + +static int tps80031_vbus_is_enabled(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret = -EIO; + uint8_t ctrl1 = 0; + uint8_t ctrl3 = 0; + + ret = tps80031_read(parent, SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL1, &ctrl1); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + ret = tps80031_read(parent, SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL3, &ctrl3); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN)) + return 1; + return ret; +} + +static int tps80031_vbus_enable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret; + + ret = tps80031_set_bits(parent, SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + + ret = tps80031_set_bits(parent, SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL3, ret); + return ret; + } + return ret; +} + +static int tps80031_vbus_disable(struct regulator_dev *rdev) +{ + struct tps80031_regulator *ri = rdev_get_drvdata(rdev); + struct device *parent = to_tps80031_dev(rdev); + int ret = 0; + + if (ri->config_flags & VBUS_DISCHRG_EN_PDN) { + ret = tps80031_write(parent, SLAVE_ID2, + USB_VBUS_CTRL_SET, VBUS_DISCHRG); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", + USB_VBUS_CTRL_SET, ret); + return ret; + } + } + + ret = tps80031_clr_bits(parent, SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL1, ret); + return ret; + } + + ret = tps80031_clr_bits(parent, SLAVE_ID2, + TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", + TPS80031_CHARGERUSB_CTRL3, ret); + return ret; + } + + mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000)); + if (ri->config_flags & VBUS_DISCHRG_EN_PDN) { + ret = tps80031_write(parent, SLAVE_ID2, + USB_VBUS_CTRL_CLR, VBUS_DISCHRG); + if (ret < 0) { + dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", + USB_VBUS_CTRL_CLR, ret); + return ret; + } + } + return ret; +} + +static struct regulator_ops tps80031_dcdc_ops = { + .list_voltage = tps80031_dcdc_list_voltage, + .set_voltage_sel = tps80031_dcdc_set_voltage_sel, + .get_voltage_sel = tps80031_dcdc_get_voltage_sel, + .enable = tps80031_reg_enable, + .disable = tps80031_reg_disable, + .is_enabled = tps80031_reg_is_enabled, +}; + +static struct regulator_ops tps80031_ldo_ops = { + .list_voltage = tps80031_ldo_list_voltage, + .set_voltage_sel = tps80031_ldo_set_voltage_sel, + .get_voltage_sel = tps80031_ldo_get_voltage_sel, + .enable = tps80031_reg_enable, + .disable = tps80031_reg_disable, + .is_enabled = tps80031_reg_is_enabled, +}; + +static struct regulator_ops tps80031_vbus_sw_ops = { + .enable = tps80031_vbus_enable, + .disable = tps80031_vbus_disable, + .is_enabled = tps80031_vbus_is_enabled, +}; + +static struct regulator_ops tps80031_vbus_hw_ops = { +}; + +static struct regulator_ops tps80031_ext_reg_ops = { + .enable = tps80031_reg_enable, + .disable = tps80031_reg_disable, + .is_enabled = tps80031_reg_is_enabled, +}; + +/* Non-exiting default definition for some register */ +#define TPS80031_SMPS3_CFG_FORCE 0 +#define TPS80031_SMPS4_CFG_FORCE 0 + +#define TPS80031_VBUS_CFG_TRANS 0 +#define TPS80031_VBUS_CFG_STATE 0 + +#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \ +{ \ + .trans_reg = TPS80031_##_id##_CFG_TRANS, \ + .state_reg = TPS80031_##_id##_CFG_STATE, \ + .force_reg = TPS80031_##_id##_CFG_FORCE, \ + .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ + .volt_id = SLAVE_##_volt_id, \ + .preq_bit = _pbit, \ + .desc = { \ + .name = "tps80031_"#_id, \ + .id = TPS80031_REGULATOR_##_id, \ + .n_voltages = 63, \ + .ops = &tps80031_dcdc_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .enable_time = 500, \ + }, \ +} + +#define TPS80031_REG_LDO(_id, _preq_bit) \ +{ \ + .trans_reg = TPS80031_##_id##_CFG_TRANS, \ + .state_reg = TPS80031_##_id##_CFG_STATE, \ + .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ + .volt_id = SLAVE_ID1, \ + .preq_bit = _preq_bit, \ + .desc = { \ + .owner = THIS_MODULE, \ + .name = "tps80031_"#_id, \ + .id = TPS80031_REGULATOR_##_id, \ + .ops = &tps80031_ldo_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = 1000000, \ + .uV_step = 100000, \ + .n_voltages = 25, \ + .vsel_mask = LDO_VSEL_MASK, \ + .enable_time = 500, \ + }, \ +} + +#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \ +{ \ + .trans_reg = TPS80031_##_id##_CFG_TRANS, \ + .state_reg = TPS80031_##_id##_CFG_STATE, \ + .volt_id = SLAVE_ID1, \ + .preq_bit = _pbit, \ + .desc = { \ + .name = "tps80031_"#_id, \ + .id = TPS80031_REGULATOR_##_id, \ + .n_voltages = 2, \ + .ops = &_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .enable_time = _delay, \ + }, \ +} + +static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = { + TPS80031_REG_SMPS(VIO, ID0, 4), + TPS80031_REG_SMPS(SMPS1, ID0, 0), + TPS80031_REG_SMPS(SMPS2, ID0, 1), + TPS80031_REG_SMPS(SMPS3, ID1, 2), + TPS80031_REG_SMPS(SMPS4, ID1, 3), + TPS80031_REG_LDO(VANA, -1), + TPS80031_REG_LDO(LDO1, 8), + TPS80031_REG_LDO(LDO2, 9), + TPS80031_REG_LDO(LDO3, 10), + TPS80031_REG_LDO(LDO4, 11), + TPS80031_REG_LDO(LDO5, 12), + TPS80031_REG_LDO(LDO6, 13), + TPS80031_REG_LDO(LDO7, 14), + TPS80031_REG_LDO(LDOLN, 15), + TPS80031_REG_LDO(LDOUSB, 5), + TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_hw_ops, 100000, -1), + TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16), + TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17), + TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18), +}; + +static int tps80031_power_req_config(struct device *parent, + struct tps80031_regulator *ri, + struct tps80031_regulator_platform_data *tps80031_pdata) +{ + int ret = 0; + + if (ri->rinfo->preq_bit < 0) + goto skip_pwr_req_config; + + ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag, + ri->rinfo->preq_bit, ri->rinfo->state_reg, + ri->rinfo->trans_reg); + if (ret < 0) { + dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret); + return ret; + } + +skip_pwr_req_config: + if (tps80031_pdata->ext_ctrl_flag & PWR_ON_ON_SLEEP) { + ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->trans_reg, + TRANS_SLEEP_ON, TRANS_SLEEP_MASK); + if (ret < 0) { + dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n", + ri->rinfo->trans_reg, ret); + return ret; + } + } + return ret; +} + +static int tps80031_regulator_config(struct device *parent, + struct tps80031_regulator *ri, + struct tps80031_regulator_platform_data *tps80031_pdata) +{ + int ret = 0; + + switch (ri->rinfo->desc.id) { + case TPS80031_REGULATOR_LDOUSB: + if (ri->config_flags & + (USBLDO_INPUT_VSYS | USBLDO_INPUT_PMID)) { + unsigned val = 0; + if (ri->config_flags & USBLDO_INPUT_VSYS) + val = MISC2_LDOUSB_IN_VSYS; + else + val = MISC2_LDOUSB_IN_PMID; + + ret = tps80031_update(parent, SLAVE_ID1, + TPS80031_MISC2, val, MISC2_LDOUSB_IN_MASK); + if (ret < 0) { + dev_err(ri->dev, + "LDOUSB config failed, e= %d\n", ret); + return ret; + } + } + break; + + case TPS80031_REGULATOR_LDO3: + if (ri->config_flags & LDO3_OUTPUT_VIB) { + ret = tps80031_update(parent, SLAVE_ID1, + TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL, + MISC2_LDO3_SEL_VIB_MASK); + if (ret < 0) { + dev_err(ri->dev, + "LDO3 config failed, e = %d\n", ret); + return ret; + } + } + break; + + case TPS80031_REGULATOR_VBUS: + /* Provide SW control Ops if VBUS is SW control */ + if (!(ri->config_flags & VBUS_SW_ONLY)) + ri->rinfo->desc.ops = &tps80031_vbus_sw_ops; + break; + default: + break; + } + + /* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */ + ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->trans_reg, + TRANS_ACTIVE_ON | TRANS_SLEEP_OFF | TRANS_OFF_OFF, + TRANS_ACTIVE_MASK | TRANS_SLEEP_MASK | TRANS_OFF_MASK); + if (ret < 0) { + dev_err(ri->dev, "trans reg update failed, e %d\n", ret); + return ret; + } + + return ret; +} + +static int check_smps_mode_mult(struct device *parent, + struct tps80031_regulator *ri) +{ + int mult_offset; + int ret; + u8 smps_offset; + u8 smps_mult; + + ret = tps80031_read(parent, SLAVE_ID1, + TPS80031_SMPS_OFFSET, &smps_offset); + if (ret < 0) { + dev_err(parent, "Error in reading smps offset register\n"); + return ret; + } + + ret = tps80031_read(parent, SLAVE_ID1, + TPS80031_SMPS_MULT, &smps_mult); + if (ret < 0) { + dev_err(parent, "Error in reading smps mult register\n"); + return ret; + } + + switch (ri->rinfo->desc.id) { + case TPS80031_REGULATOR_VIO: + mult_offset = SMPS_MULTOFFSET_VIO; + break; + case TPS80031_REGULATOR_SMPS1: + mult_offset = SMPS_MULTOFFSET_SMPS1; + break; + case TPS80031_REGULATOR_SMPS2: + mult_offset = SMPS_MULTOFFSET_SMPS2; + break; + case TPS80031_REGULATOR_SMPS3: + mult_offset = SMPS_MULTOFFSET_SMPS3; + break; + case TPS80031_REGULATOR_SMPS4: + mult_offset = SMPS_MULTOFFSET_SMPS4; + break; + case TPS80031_REGULATOR_LDO2: + ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0; + /* TRACK mode the ldo2 varies from 600mV to 1300mV */ + if (ri->device_flags & TRACK_MODE_ENABLE) { + ri->rinfo->desc.min_uV = 600000; + ri->rinfo->desc.uV_step = 12500; + ri->rinfo->desc.n_voltages = 57; + ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK; + } + return 0; + default: + return 0; + } + + ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0; + ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0; + switch (ri->device_flags) { + case 0: + ri->rinfo->desc.min_uV = 607700; + ri->rinfo->desc.uV_step = 12660; + break; + case DCDC_OFFSET_EN: + ri->rinfo->desc.min_uV = 700000; + ri->rinfo->desc.uV_step = 12500; + break; + case DCDC_EXTENDED_EN: + ri->rinfo->desc.min_uV = 1852000; + ri->rinfo->desc.uV_step = 38600; + break; + case DCDC_OFFSET_EN | DCDC_EXTENDED_EN: + ri->rinfo->desc.min_uV = 2161000; + ri->rinfo->desc.uV_step = 38600; + break; + } + return 0; +} + +static int __devinit tps80031_regulator_probe(struct platform_device *pdev) +{ + struct tps80031_platform_data *pdata; + struct tps80031_regulator_platform_data *tps_pdata; + struct tps80031_regulator_info *rinfo; + struct tps80031_regulator *ri; + struct tps80031_regulator *pmic; + struct regulator_dev *rdev; + struct regulator_config config = { }; + int ret; + int num; + + pdata = dev_get_platdata(pdev->dev.parent); + + if (!pdata) { + dev_err(&pdev->dev, "No platform data\n"); + return -EINVAL; + } + + pmic = devm_kzalloc(&pdev->dev, + TPS80031_REGULATOR_MAX * sizeof(*pmic), GFP_KERNEL); + if (!pmic) { + dev_err(&pdev->dev, "mem alloc for pmic failed\n"); + return -ENOMEM; + } + + for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) { + tps_pdata = pdata->regulator_pdata[num]; + rinfo = &tps80031_rinfo[num]; + ri = &pmic[num]; + ri->rinfo = rinfo; + ri->dev = &pdev->dev; + + check_smps_mode_mult(pdev->dev.parent, ri); + config.dev = &pdev->dev; + config.init_data = NULL; + config.driver_data = ri; + if (tps_pdata) { + config.init_data = tps_pdata->reg_init_data; + ri->config_flags = tps_pdata->config_flags; + ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag; + ret = tps80031_regulator_config(pdev->dev.parent, + ri, tps_pdata); + if (ret < 0) { + dev_err(&pdev->dev, + "regulator config failed, e %d\n", ret); + goto fail; + } + + ret = tps80031_power_req_config(pdev->dev.parent, + ri, tps_pdata); + if (ret < 0) { + dev_err(&pdev->dev, + "pwr_req config failed, err %d\n", ret); + goto fail; + } + } + rdev = regulator_register(&ri->rinfo->desc, &config); + if (IS_ERR_OR_NULL(rdev)) { + dev_err(&pdev->dev, + "register regulator failed %s\n", + ri->rinfo->desc.name); + ret = PTR_ERR(rdev); + goto fail; + } + ri->rdev = rdev; + } + + platform_set_drvdata(pdev, pmic); + return 0; +fail: + while (--num >= 0) { + ri = &pmic[num]; + regulator_unregister(ri->rdev); + } + return ret; +} + +static int __devexit tps80031_regulator_remove(struct platform_device *pdev) +{ + struct tps80031_regulator *pmic = platform_get_drvdata(pdev); + struct tps80031_regulator *ri = NULL; + int num; + + for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) { + ri = &pmic[num]; + regulator_unregister(ri->rdev); + } + return 0; +} + +static struct platform_driver tps80031_regulator_driver = { + .driver = { + .name = "tps80031-pmic", + .owner = THIS_MODULE, + }, + .probe = tps80031_regulator_probe, + .remove = __devexit_p(tps80031_regulator_remove), +}; + +static int __init tps80031_regulator_init(void) +{ + return platform_driver_register(&tps80031_regulator_driver); +} +subsys_initcall(tps80031_regulator_init); + +static void __exit tps80031_regulator_exit(void) +{ + platform_driver_unregister(&tps80031_regulator_driver); +} +module_exit(tps80031_regulator_exit); + +MODULE_ALIAS("platform:tps80031-regulator"); +MODULE_DESCRIPTION("Regulator Driver for TI TPS80031 PMIC"); +MODULE_AUTHOR("Laxman Dewangan "); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3