mfd: lp873x: Add lp873x PMIC support
The LP873X chip is a power management IC for Portable Navigation Systems
and Tablet Computing devices. It contains the following components:
- Regulators.
- Configurable General Purpose Output Signals (GPO).
PMIC interacts with the main processor through i2c. PMIC has
couple of LDOs (Linear Regulators), couple of BUCKs (Step-Down DC-DC
Converter Cores) and GPOs (General Purpose Output Signals).
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Keerthy
Lee Jones
parent
694d0d0bb2
commit
dc21c7ad3a
@ -1224,6 +1224,20 @@ config MFD_TPS65217
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This driver can also be built as a module. If so, the module
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will be called tps65217.
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config MFD_TI_LP873X
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tristate "TI LP873X Power Management IC"
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depends on I2C
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select MFD_CORE
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select REGMAP_I2C
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help
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If you say yes here then you get support for the LP873X series of
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Power Management Integrated Circuits (PMIC).
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These include voltage regulators, thermal protection, configurable
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General Purpose Outputs (GPO) that are used in portable devices.
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This driver can also be built as a module. If so, the module
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will be called lp873x.
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config MFD_TPS65218
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tristate "TI TPS65218 Power Management chips"
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depends on I2C
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@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
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obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
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obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
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obj-$(CONFIG_MFD_TI_LP873X) += lp873x.o
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obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o
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obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
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obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o
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99
drivers/mfd/lp873x.c
Normal file
99
drivers/mfd/lp873x.c
Normal file
@ -0,0 +1,99 @@
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/*
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* Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
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*
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* Author: Keerthy <j-keerthy@ti.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
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/interrupt.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/mfd/lp873x.h>
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static const struct regmap_config lp873x_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = LP873X_REG_MAX,
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};
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static const struct mfd_cell lp873x_cells[] = {
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{ .name = "lp873x-regulator", },
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{ .name = "lp873x-gpio", },
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};
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static int lp873x_probe(struct i2c_client *client,
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const struct i2c_device_id *ids)
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{
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struct lp873x *lp873;
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int ret;
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unsigned int otpid;
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lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL);
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if (!lp873)
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return -ENOMEM;
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lp873->dev = &client->dev;
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lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config);
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if (IS_ERR(lp873->regmap)) {
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ret = PTR_ERR(lp873->regmap);
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dev_err(lp873->dev,
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"Failed to initialize register map: %d\n", ret);
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return ret;
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}
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mutex_init(&lp873->lock);
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ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
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if (ret) {
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dev_err(lp873->dev, "Failed to read OTP ID\n");
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return ret;
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}
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lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
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i2c_set_clientdata(client, lp873);
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ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
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ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
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return ret;
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}
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static const struct of_device_id of_lp873x_match_table[] = {
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{ .compatible = "ti,lp8733", },
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{ .compatible = "ti,lp8732", },
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{}
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};
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MODULE_DEVICE_TABLE(of, of_lp873x_match_table);
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static const struct i2c_device_id lp873x_id_table[] = {
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{ "lp873x", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
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static struct i2c_driver lp873x_driver = {
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.driver = {
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.name = "lp873x",
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.of_match_table = of_lp873x_match_table,
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},
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.probe = lp873x_probe,
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.id_table = lp873x_id_table,
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};
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module_i2c_driver(lp873x_driver);
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MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
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MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver");
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MODULE_LICENSE("GPL v2");
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269
include/linux/mfd/lp873x.h
Normal file
269
include/linux/mfd/lp873x.h
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@ -0,0 +1,269 @@
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/*
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* Functions to access LP873X power management chip.
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*
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* Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.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
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __LINUX_MFD_LP873X_H
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#define __LINUX_MFD_LP873X_H
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#include <linux/i2c.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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/* LP873x chip id list */
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#define LP873X 0x00
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/* All register addresses */
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#define LP873X_REG_DEV_REV 0X00
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#define LP873X_REG_OTP_REV 0X01
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#define LP873X_REG_BUCK0_CTRL_1 0X02
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#define LP873X_REG_BUCK0_CTRL_2 0X03
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#define LP873X_REG_BUCK1_CTRL_1 0X04
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#define LP873X_REG_BUCK1_CTRL_2 0X05
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#define LP873X_REG_BUCK0_VOUT 0X06
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#define LP873X_REG_BUCK1_VOUT 0X07
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#define LP873X_REG_LDO0_CTRL 0X08
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#define LP873X_REG_LDO1_CTRL 0X09
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#define LP873X_REG_LDO0_VOUT 0X0A
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#define LP873X_REG_LDO1_VOUT 0X0B
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#define LP873X_REG_BUCK0_DELAY 0X0C
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#define LP873X_REG_BUCK1_DELAY 0X0D
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#define LP873X_REG_LDO0_DELAY 0X0E
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#define LP873X_REG_LDO1_DELAY 0X0F
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#define LP873X_REG_GPO_DELAY 0X10
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#define LP873X_REG_GPO2_DELAY 0X11
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#define LP873X_REG_GPO_CTRL 0X12
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#define LP873X_REG_CONFIG 0X13
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#define LP873X_REG_PLL_CTRL 0X14
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#define LP873X_REG_PGOOD_CTRL1 0X15
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#define LP873X_REG_PGOOD_CTRL2 0X16
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#define LP873X_REG_PG_FAULT 0X17
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#define LP873X_REG_RESET 0X18
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#define LP873X_REG_INT_TOP_1 0X19
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#define LP873X_REG_INT_TOP_2 0X1A
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#define LP873X_REG_INT_BUCK 0X1B
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#define LP873X_REG_INT_LDO 0X1C
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#define LP873X_REG_TOP_STAT 0X1D
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#define LP873X_REG_BUCK_STAT 0X1E
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#define LP873X_REG_LDO_STAT 0x1F
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#define LP873X_REG_TOP_MASK_1 0x20
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#define LP873X_REG_TOP_MASK_2 0x21
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#define LP873X_REG_BUCK_MASK 0x22
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#define LP873X_REG_LDO_MASK 0x23
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#define LP873X_REG_SEL_I_LOAD 0x24
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#define LP873X_REG_I_LOAD_2 0x25
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#define LP873X_REG_I_LOAD_1 0x26
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#define LP873X_REG_MAX LP873X_REG_I_LOAD_1
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/* Register field definitions */
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#define LP873X_DEV_REV_DEV_ID 0xC0
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#define LP873X_DEV_REV_ALL_LAYER 0x30
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#define LP873X_DEV_REV_METAL_LAYER 0x0F
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#define LP873X_OTP_REV_OTP_ID 0xFF
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#define LP873X_BUCK0_CTRL_1_BUCK0_FPWM BIT(3)
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#define LP873X_BUCK0_CTRL_1_BUCK0_RDIS_EN BIT(2)
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#define LP873X_BUCK0_CTRL_1_BUCK0_EN_PIN_CTRL BIT(1)
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#define LP873X_BUCK0_CTRL_1_BUCK0_EN BIT(0)
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#define LP873X_BUCK0_CTRL_2_BUCK0_ILIM 0x38
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#define LP873X_BUCK0_CTRL_2_BUCK0_SLEW_RATE 0x07
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#define LP873X_BUCK1_CTRL_1_BUCK1_FPWM BIT(3)
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#define LP873X_BUCK1_CTRL_1_BUCK1_RDIS_EN BIT(2)
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#define LP873X_BUCK1_CTRL_1_BUCK1_EN_PIN_CTRL BIT(1)
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#define LP873X_BUCK1_CTRL_1_BUCK1_EN BIT(0)
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#define LP873X_BUCK1_CTRL_2_BUCK1_ILIM 0x38
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#define LP873X_BUCK1_CTRL_2_BUCK1_SLEW_RATE 0x07
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#define LP873X_BUCK0_VOUT_BUCK0_VSET 0xFF
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#define LP873X_BUCK1_VOUT_BUCK1_VSET 0xFF
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#define LP873X_LDO0_CTRL_LDO0_RDIS_EN BIT(2)
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#define LP873X_LDO0_CTRL_LDO0_EN_PIN_CTRL BIT(1)
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#define LP873X_LDO0_CTRL_LDO0_EN BIT(0)
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#define LP873X_LDO1_CTRL_LDO1_RDIS_EN BIT(2)
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#define LP873X_LDO1_CTRL_LDO1_EN_PIN_CTRL BIT(1)
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#define LP873X_LDO1_CTRL_LDO1_EN BIT(0)
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#define LP873X_LDO0_VOUT_LDO0_VSET 0x1F
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#define LP873X_LDO1_VOUT_LDO1_VSET 0x1F
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#define LP873X_BUCK0_DELAY_BUCK0_SD_DELAY 0xF0
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#define LP873X_BUCK0_DELAY_BUCK0_SU_DELAY 0x0F
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#define LP873X_BUCK1_DELAY_BUCK1_SD_DELAY 0xF0
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#define LP873X_BUCK1_DELAY_BUCK1_SU_DELAY 0x0F
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#define LP873X_LDO0_DELAY_LDO0_SD_DELAY 0xF0
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#define LP873X_LDO0_DELAY_LDO0_SU_DELAY 0x0F
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#define LP873X_LDO1_DELAY_LDO1_SD_DELAY 0xF0
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#define LP873X_LDO1_DELAY_LDO1_SU_DELAY 0x0F
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#define LP873X_GPO_DELAY_GPO_SD_DELAY 0xF0
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#define LP873X_GPO_DELAY_GPO_SU_DELAY 0x0F
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#define LP873X_GPO2_DELAY_GPO2_SD_DELAY 0xF0
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#define LP873X_GPO2_DELAY_GPO2_SU_DELAY 0x0F
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#define LP873X_GPO_CTRL_GPO2_OD BIT(6)
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#define LP873X_GPO_CTRL_GPO2_EN_PIN_CTRL BIT(5)
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#define LP873X_GPO_CTRL_GPO2_EN BIT(4)
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#define LP873X_GPO_CTRL_GPO_OD BIT(2)
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#define LP873X_GPO_CTRL_GPO_EN_PIN_CTRL BIT(1)
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#define LP873X_GPO_CTRL_GPO_EN BIT(0)
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#define LP873X_CONFIG_SU_DELAY_SEL BIT(6)
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#define LP873X_CONFIG_SD_DELAY_SEL BIT(5)
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#define LP873X_CONFIG_CLKIN_PIN_SEL BIT(4)
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#define LP873X_CONFIG_CLKIN_PD BIT(3)
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#define LP873X_CONFIG_EN_PD BIT(2)
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#define LP873X_CONFIG_TDIE_WARN_LEVEL BIT(1)
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#define LP873X_EN_SPREAD_SPEC BIT(0)
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#define LP873X_PLL_CTRL_EN_PLL BIT(6)
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#define LP873X_EXT_CLK_FREQ 0x1F
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#define LP873X_PGOOD_CTRL1_PGOOD_POL BIT(7)
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#define LP873X_PGOOD_CTRL1_PGOOD_OD BIT(6)
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#define LP873X_PGOOD_CTRL1_PGOOD_WINDOW_LDO BIT(5)
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#define LP873X_PGOOD_CTRL1_PGOOD_WINDOWN_BUCK BIT(4)
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#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO1 BIT(3)
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#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO0 BIT(2)
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#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK1 BIT(1)
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#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK0 BIT(0)
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#define LP873X_PGOOD_CTRL2_EN_PGOOD_TWARN BIT(2)
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#define LP873X_PGOOD_CTRL2_EN_PG_FAULT_GATE BIT(1)
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#define LP873X_PGOOD_CTRL2_PGOOD_MODE BIT(0)
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#define LP873X_PG_FAULT_PG_FAULT_LDO1 BIT(3)
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#define LP873X_PG_FAULT_PG_FAULT_LDO0 BIT(2)
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#define LP873X_PG_FAULT_PG_FAULT_BUCK1 BIT(1)
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#define LP873X_PG_FAULT_PG_FAULT_BUCK0 BIT(0)
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#define LP873X_RESET_SW_RESET BIT(0)
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#define LP873X_INT_TOP_1_PGOOD_INT BIT(7)
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#define LP873X_INT_TOP_1_LDO_INT BIT(6)
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#define LP873X_INT_TOP_1_BUCK_INT BIT(5)
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#define LP873X_INT_TOP_1_SYNC_CLK_INT BIT(4)
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#define LP873X_INT_TOP_1_TDIE_SD_INT BIT(3)
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#define LP873X_INT_TOP_1_TDIE_WARN_INT BIT(2)
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#define LP873X_INT_TOP_1_OVP_INT BIT(1)
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#define LP873X_INT_TOP_1_I_MEAS_INT BIT(0)
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#define LP873X_INT_TOP_2_RESET_REG_INT BIT(0)
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#define LP873X_INT_BUCK_BUCK1_PG_INT BIT(6)
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#define LP873X_INT_BUCK_BUCK1_SC_INT BIT(5)
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#define LP873X_INT_BUCK_BUCK1_ILIM_INT BIT(4)
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#define LP873X_INT_BUCK_BUCK0_PG_INT BIT(2)
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#define LP873X_INT_BUCK_BUCK0_SC_INT BIT(1)
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#define LP873X_INT_BUCK_BUCK0_ILIM_INT BIT(0)
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#define LP873X_INT_LDO_LDO1_PG_INT BIT(6)
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#define LP873X_INT_LDO_LDO1_SC_INT BIT(5)
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#define LP873X_INT_LDO_LDO1_ILIM_INT BIT(4)
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#define LP873X_INT_LDO_LDO0_PG_INT BIT(2)
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#define LP873X_INT_LDO_LDO0_SC_INT BIT(1)
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#define LP873X_INT_LDO_LDO0_ILIM_INT BIT(0)
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#define LP873X_TOP_STAT_PGOOD_STAT BIT(7)
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#define LP873X_TOP_STAT_SYNC_CLK_STAT BIT(4)
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#define LP873X_TOP_STAT_TDIE_SD_STAT BIT(3)
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#define LP873X_TOP_STAT_TDIE_WARN_STAT BIT(2)
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#define LP873X_TOP_STAT_OVP_STAT BIT(1)
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#define LP873X_BUCK_STAT_BUCK1_STAT BIT(7)
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#define LP873X_BUCK_STAT_BUCK1_PG_STAT BIT(6)
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#define LP873X_BUCK_STAT_BUCK1_ILIM_STAT BIT(4)
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#define LP873X_BUCK_STAT_BUCK0_STAT BIT(3)
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#define LP873X_BUCK_STAT_BUCK0_PG_STAT BIT(2)
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#define LP873X_BUCK_STAT_BUCK0_ILIM_STAT BIT(0)
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#define LP873X_LDO_STAT_LDO1_STAT BIT(7)
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#define LP873X_LDO_STAT_LDO1_PG_STAT BIT(6)
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#define LP873X_LDO_STAT_LDO1_ILIM_STAT BIT(4)
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#define LP873X_LDO_STAT_LDO0_STAT BIT(3)
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#define LP873X_LDO_STAT_LDO0_PG_STAT BIT(2)
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#define LP873X_LDO_STAT_LDO0_ILIM_STAT BIT(0)
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#define LP873X_TOP_MASK_1_PGOOD_INT_MASK BIT(7)
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#define LP873X_TOP_MASK_1_SYNC_CLK_MASK BIT(4)
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#define LP873X_TOP_MASK_1_TDIE_WARN_MASK BIT(2)
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#define LP873X_TOP_MASK_1_I_MEAS_MASK BIT(0)
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#define LP873X_TOP_MASK_2_RESET_REG_MASK BIT(0)
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#define LP873X_BUCK_MASK_BUCK1_PGF_MASK BIT(7)
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#define LP873X_BUCK_MASK_BUCK1_PGR_MASK BIT(6)
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#define LP873X_BUCK_MASK_BUCK1_ILIM_MASK BIT(4)
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#define LP873X_BUCK_MASK_BUCK0_PGF_MASK BIT(3)
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#define LP873X_BUCK_MASK_BUCK0_PGR_MASK BIT(2)
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#define LP873X_BUCK_MASK_BUCK0_ILIM_MASK BIT(0)
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#define LP873X_LDO_MASK_LDO1_PGF_MASK BIT(7)
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#define LP873X_LDO_MASK_LDO1_PGR_MASK BIT(6)
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#define LP873X_LDO_MASK_LDO1_ILIM_MASK BIT(4)
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#define LP873X_LDO_MASK_LDO0_PGF_MASK BIT(3)
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#define LP873X_LDO_MASK_LDO0_PGR_MASK BIT(2)
|
||||
#define LP873X_LDO_MASK_LDO0_ILIM_MASK BIT(0)
|
||||
|
||||
#define LP873X_SEL_I_LOAD_CURRENT_BUCK_SELECT BIT(0)
|
||||
|
||||
#define LP873X_I_LOAD_2_BUCK_LOAD_CURRENT BIT(0)
|
||||
|
||||
#define LP873X_I_LOAD_1_BUCK_LOAD_CURRENT 0xFF
|
||||
|
||||
#define LP873X_MAX_REG_ID LP873X_LDO_1
|
||||
|
||||
/* Number of step-down converters available */
|
||||
#define LP873X_NUM_BUCK 2
|
||||
/* Number of LDO voltage regulators available */
|
||||
#define LP873X_NUM_LDO 2
|
||||
/* Number of total regulators available */
|
||||
#define LP873X_NUM_REGULATOR (LP873X_NUM_BUCK + LP873X_NUM_LDO)
|
||||
|
||||
enum lp873x_regulator_id {
|
||||
/* BUCK's */
|
||||
LP873X_BUCK_0,
|
||||
LP873X_BUCK_1,
|
||||
/* LDOs */
|
||||
LP873X_LDO_0,
|
||||
LP873X_LDO_1,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct lp873x - state holder for the lp873x driver
|
||||
* @dev: struct device pointer for MFD device
|
||||
* @rev: revision of the lp873x
|
||||
* @lock: lock guarding the data structure
|
||||
* @regmap: register map of the lp873x PMIC
|
||||
*
|
||||
* Device data may be used to access the LP873X chip
|
||||
*/
|
||||
struct lp873x {
|
||||
struct device *dev;
|
||||
u8 rev;
|
||||
struct mutex lock; /* lock guarding the data structure */
|
||||
struct regmap *regmap;
|
||||
};
|
||||
#endif /* __LINUX_MFD_LP873X_H */
|
||||
Loading…
Reference in New Issue
Block a user