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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 <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Laxman Dewangan
Mark Brown
parent
77b67063bb
commit
1a0bb679bc
@ -415,6 +415,15 @@ config REGULATOR_TPS65912
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help
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This driver supports TPS65912 voltage regulator chip.
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config REGULATOR_TPS80031
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tristate "TI TPS80031/TPS80032 power regualtor driver"
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depends on MFD_TPS80031
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help
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TPS80031/ TPS80032 Fully Integrated Power Management with Power
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Path and Battery Charger. It has 5 configurable step-down
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converters, 11 general purpose LDOs, VBUS generator and digital
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output to control regulators.
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config REGULATOR_TWL4030
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bool "TI TWL4030/TWL5030/TWL6030/TPS659x0 PMIC"
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depends on TWL4030_CORE
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@ -56,6 +56,7 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
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obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
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obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
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obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
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obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o
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obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
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obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o
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obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o
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789
drivers/regulator/tps80031-regulator.c
Normal file
789
drivers/regulator/tps80031-regulator.c
Normal file
@ -0,0 +1,789 @@
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/*
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* tps80031-regulator.c -- TI TPS80031 regulator driver.
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*
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* Regulator driver for TITPS80031/TPS80032 Fully Integrated Power
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* Management with Power Path and Battery Charger.
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*
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* Copyright (c) 2012, NVIDIA Corporation.
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*
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* Author: Laxman Dewangan <ldewangan@nvidia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
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* whether express or implied; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307, USA
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*/
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/mfd/tps80031.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/slab.h>
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/* Flags for DCDC Voltage reading */
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#define DCDC_OFFSET_EN BIT(0)
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#define DCDC_EXTENDED_EN BIT(1)
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#define TRACK_MODE_ENABLE BIT(2)
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#define SMPS_MULTOFFSET_VIO BIT(1)
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#define SMPS_MULTOFFSET_SMPS1 BIT(3)
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#define SMPS_MULTOFFSET_SMPS2 BIT(4)
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#define SMPS_MULTOFFSET_SMPS3 BIT(6)
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#define SMPS_MULTOFFSET_SMPS4 BIT(0)
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#define SMPS_CMD_MASK 0xC0
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#define SMPS_VSEL_MASK 0x3F
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#define LDO_VSEL_MASK 0x1F
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#define LDO_TRACK_VSEL_MASK 0x3F
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#define MISC2_LDOUSB_IN_VSYS BIT(4)
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#define MISC2_LDOUSB_IN_PMID BIT(3)
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#define MISC2_LDOUSB_IN_MASK 0x18
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#define MISC2_LDO3_SEL_VIB_VAL BIT(0)
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#define MISC2_LDO3_SEL_VIB_MASK 0x1
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#define BOOST_HW_PWR_EN BIT(5)
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#define BOOST_HW_PWR_EN_MASK BIT(5)
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#define OPA_MODE_EN BIT(6)
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#define OPA_MODE_EN_MASK BIT(6)
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#define USB_VBUS_CTRL_SET 0x04
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#define USB_VBUS_CTRL_CLR 0x05
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#define VBUS_DISCHRG 0x20
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struct tps80031_regulator_info {
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/* Regulator register address.*/
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u8 trans_reg;
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u8 state_reg;
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u8 force_reg;
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u8 volt_reg;
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u8 volt_id;
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/*Power request bits */
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int preq_bit;
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/* used by regulator core */
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struct regulator_desc desc;
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};
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struct tps80031_regulator {
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struct device *dev;
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struct regulator_dev *rdev;
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struct tps80031_regulator_info *rinfo;
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u8 device_flags;
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unsigned int config_flags;
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unsigned int ext_ctrl_flag;
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};
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static inline struct device *to_tps80031_dev(struct regulator_dev *rdev)
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{
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return rdev_get_dev(rdev)->parent->parent;
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}
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static int tps80031_reg_is_enabled(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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u8 reg_val;
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int ret;
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if (ri->ext_ctrl_flag & EXT_PWR_REQ)
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return true;
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ret = tps80031_read(parent, SLAVE_ID1, ri->rinfo->state_reg, ®_val);
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if (ret < 0) {
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dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n",
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ri->rinfo->state_reg, ret);
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return ret;
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}
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return ((reg_val & STATE_MASK) == STATE_ON);
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}
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static int tps80031_reg_enable(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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int ret;
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if (ri->ext_ctrl_flag & EXT_PWR_REQ)
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return 0;
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ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->state_reg,
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STATE_ON, STATE_MASK);
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if (ret < 0) {
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dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
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ri->rinfo->state_reg, ret);
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return ret;
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}
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return ret;
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}
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static int tps80031_reg_disable(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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int ret;
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if (ri->ext_ctrl_flag & EXT_PWR_REQ)
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return 0;
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ret = tps80031_update(parent, SLAVE_ID1, ri->rinfo->state_reg,
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STATE_OFF, STATE_MASK);
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if (ret < 0)
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dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
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ri->rinfo->state_reg, ret);
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return ret;
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}
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/* DCDC voltages for the selector of 58 to 63 */
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static int tps80031_dcdc_voltages[4][5] = {
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{ 1350, 1500, 1800, 1900, 2100},
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{ 1350, 1500, 1800, 1900, 2100},
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{ 2084, 2315, 2778, 2932, 3241},
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{ 4167, 2315, 2778, 2932, 3241},
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};
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static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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int volt_index = ri->device_flags & 0x3;
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if (sel == 0)
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return 0;
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else if (sel < 58)
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return regulator_list_voltage_linear(rdev, sel - 1);
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else
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return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000;
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}
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static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev,
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unsigned vsel)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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int ret;
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u8 reg_val;
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if (ri->rinfo->force_reg) {
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ret = tps80031_read(parent, ri->rinfo->volt_id,
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ri->rinfo->force_reg, ®_val);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
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ri->rinfo->force_reg, ret);
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return ret;
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}
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if (!(reg_val & SMPS_CMD_MASK)) {
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ret = tps80031_update(parent, ri->rinfo->volt_id,
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ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK);
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if (ret < 0)
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dev_err(ri->dev,
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"reg 0x%02x update failed, e = %d\n",
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ri->rinfo->force_reg, ret);
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return ret;
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}
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}
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ret = tps80031_update(parent, ri->rinfo->volt_id,
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ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK);
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if (ret < 0)
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dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n",
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ri->rinfo->volt_reg, ret);
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return ret;
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}
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static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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uint8_t vsel = 0;
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int ret;
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if (ri->rinfo->force_reg) {
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ret = tps80031_read(parent, ri->rinfo->volt_id,
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ri->rinfo->force_reg, &vsel);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
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ri->rinfo->force_reg, ret);
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return ret;
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}
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if (!(vsel & SMPS_CMD_MASK))
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return vsel & SMPS_VSEL_MASK;
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}
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ret = tps80031_read(parent, ri->rinfo->volt_id,
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ri->rinfo->volt_reg, &vsel);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
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ri->rinfo->volt_reg, ret);
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return ret;
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}
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return vsel & SMPS_VSEL_MASK;
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}
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static int tps80031_ldo_set_voltage_sel(struct regulator_dev *rdev,
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unsigned sel)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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int ret;
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/* Check for valid setting for TPS80031 or TPS80032-ES1.0 */
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if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) &&
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(ri->device_flags & TRACK_MODE_ENABLE)) {
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unsigned nvsel = (sel) & 0x1F;
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if (((tps80031_get_chip_info(parent) == TPS80031) ||
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((tps80031_get_chip_info(parent) == TPS80032) &&
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(tps80031_get_pmu_version(parent) == 0x0))) &&
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((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) {
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dev_err(ri->dev,
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"Invalid sel %d in track mode LDO2\n",
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nvsel);
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return -EINVAL;
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}
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}
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ret = tps80031_write(parent, ri->rinfo->volt_id,
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ri->rinfo->volt_reg, sel);
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if (ret < 0)
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dev_err(ri->dev, "Error in writing reg 0x%02x, e = %d\n",
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ri->rinfo->volt_reg, ret);
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return ret;
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}
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static int tps80031_ldo_get_voltage_sel(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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uint8_t vsel;
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int ret;
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ret = tps80031_read(parent, ri->rinfo->volt_id,
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ri->rinfo->volt_reg, &vsel);
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if (ret < 0) {
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dev_err(ri->dev, "Error in writing the Voltage register\n");
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return ret;
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}
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return vsel & rdev->desc->vsel_mask;
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}
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static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
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{
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if (sel == 0)
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return 0;
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else
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return regulator_list_voltage_linear(rdev, sel - 1);
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}
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static int tps80031_vbus_is_enabled(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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int ret = -EIO;
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uint8_t ctrl1 = 0;
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uint8_t ctrl3 = 0;
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ret = tps80031_read(parent, SLAVE_ID2,
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TPS80031_CHARGERUSB_CTRL1, &ctrl1);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
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TPS80031_CHARGERUSB_CTRL1, ret);
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return ret;
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}
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ret = tps80031_read(parent, SLAVE_ID2,
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TPS80031_CHARGERUSB_CTRL3, &ctrl3);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
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TPS80031_CHARGERUSB_CTRL1, ret);
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return ret;
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}
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if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN))
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return 1;
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return ret;
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}
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static int tps80031_vbus_enable(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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int ret;
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ret = tps80031_set_bits(parent, SLAVE_ID2,
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TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
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TPS80031_CHARGERUSB_CTRL1, ret);
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return ret;
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}
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ret = tps80031_set_bits(parent, SLAVE_ID2,
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TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
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TPS80031_CHARGERUSB_CTRL3, ret);
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return ret;
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}
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return ret;
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}
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static int tps80031_vbus_disable(struct regulator_dev *rdev)
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{
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struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps80031_dev(rdev);
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int ret = 0;
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if (ri->config_flags & VBUS_DISCHRG_EN_PDN) {
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ret = tps80031_write(parent, SLAVE_ID2,
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USB_VBUS_CTRL_SET, VBUS_DISCHRG);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
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USB_VBUS_CTRL_SET, ret);
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return ret;
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}
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}
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ret = tps80031_clr_bits(parent, SLAVE_ID2,
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TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
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TPS80031_CHARGERUSB_CTRL1, ret);
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return ret;
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}
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ret = tps80031_clr_bits(parent, SLAVE_ID2,
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TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
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TPS80031_CHARGERUSB_CTRL3, ret);
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return ret;
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}
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mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000));
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if (ri->config_flags & VBUS_DISCHRG_EN_PDN) {
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ret = tps80031_write(parent, SLAVE_ID2,
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USB_VBUS_CTRL_CLR, VBUS_DISCHRG);
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if (ret < 0) {
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dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
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USB_VBUS_CTRL_CLR, ret);
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return ret;
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}
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}
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return ret;
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}
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static struct regulator_ops tps80031_dcdc_ops = {
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.list_voltage = tps80031_dcdc_list_voltage,
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.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 <ldewangan@nvidia.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue
Block a user