Commit 1e349600 authored by Keerthy's avatar Keerthy Committed by Lee Jones
Browse files

mfd: Add LP87565 PMIC support



The LP87565 chip is a power management IC for Portable Navigation Systems
and Tablet Computing devices. It contains the following components:

        - Configurable Bucks(Single and multi-phase).
        - Configurable General Purpose Output Signals (GPO).

The LP87565-Q1 variant device uses two 2-phase outputs configuration,
Buck0 is master for Buck0/1 output and Buck2 is master for Buck2/3
output.
Signed-off-by: default avatarKeerthy <j-keerthy@ti.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent f58b14e6
TI LP87565 PMIC MFD driver
Required properties:
- compatible: "ti,lp87565", "ti,lp87565-q1"
- reg: I2C slave address.
- gpio-controller: Marks the device node as a GPIO Controller.
- #gpio-cells: Should be two. The first cell is the pin number and
the second cell is used to specify flags.
See ../gpio/gpio.txt for more information.
- xxx-in-supply: Phandle to parent supply node of each regulator
populated under regulators node. xxx should match
the supply_name populated in driver.
Example:
lp87565_pmic: pmic@60 {
compatible = "ti,lp87565-q1";
reg = <0x60>;
gpio-controller;
#gpio-cells = <2>;
buck10-in-supply = <&vsys_3v3>;
buck23-in-supply = <&vsys_3v3>;
regulators: regulators {
buck10_reg: buck10 {
/* VDD_MPU */
regulator-name = "buck10";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1250000>;
regulator-always-on;
regulator-boot-on;
};
buck23_reg: buck23 {
/* VDD_GPU */
regulator-name = "buck23";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <1250000>;
regulator-boot-on;
regulator-always-on;
};
};
};
......@@ -1351,6 +1351,20 @@ config MFD_TI_LP873X
This driver can also be built as a module. If so, the module
will be called lp873x.
config MFD_TI_LP87565
tristate "TI LP87565 Power Management IC"
depends on I2C && OF
select MFD_CORE
select REGMAP_I2C
help
If you say yes here then you get support for the LP87565 series of
Power Management Integrated Circuits (PMIC).
These include voltage regulators, thermal protection, configurable
General Purpose Outputs (GPO) that are used in portable devices.
This driver can also be built as a module. If so, the module
will be called lp87565.
config MFD_TPS65218
tristate "TI TPS65218 Power Management chips"
depends on I2C
......
......@@ -25,6 +25,7 @@ obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
obj-$(CONFIG_MFD_TI_LP873X) += lp873x.o
obj-$(CONFIG_MFD_TI_LP87565) += lp87565.o
obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o
obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
......
/*
* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
*
* Author: Keerthy <j-keerthy@ti.com>
*
* 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.
*/
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/mfd/lp87565.h>
static const struct regmap_config lp87565_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = LP87565_REG_MAX,
};
static const struct mfd_cell lp87565_cells[] = {
{ .name = "lp87565-q1-regulator", },
{ .name = "lp87565-q1-gpio", },
};
static const struct of_device_id of_lp87565_match_table[] = {
{ .compatible = "ti,lp87565", },
{
.compatible = "ti,lp87565-q1",
.data = (void *)LP87565_DEVICE_TYPE_LP87565_Q1,
},
{}
};
MODULE_DEVICE_TABLE(of, of_lp87565_match_table);
static int lp87565_probe(struct i2c_client *client,
const struct i2c_device_id *ids)
{
struct lp87565 *lp87565;
const struct of_device_id *of_id;
int ret;
unsigned int otpid;
lp87565 = devm_kzalloc(&client->dev, sizeof(*lp87565), GFP_KERNEL);
if (!lp87565)
return -ENOMEM;
lp87565->dev = &client->dev;
lp87565->regmap = devm_regmap_init_i2c(client, &lp87565_regmap_config);
if (IS_ERR(lp87565->regmap)) {
ret = PTR_ERR(lp87565->regmap);
dev_err(lp87565->dev,
"Failed to initialize register map: %d\n", ret);
return ret;
}
ret = regmap_read(lp87565->regmap, LP87565_REG_OTP_REV, &otpid);
if (ret) {
dev_err(lp87565->dev, "Failed to read OTP ID\n");
return ret;
}
lp87565->rev = otpid & LP87565_OTP_REV_OTP_ID;
of_id = of_match_device(of_lp87565_match_table, &client->dev);
if (of_id)
lp87565->dev_type = (enum lp87565_device_type)of_id->data;
i2c_set_clientdata(client, lp87565);
ret = mfd_add_devices(lp87565->dev, PLATFORM_DEVID_AUTO, lp87565_cells,
ARRAY_SIZE(lp87565_cells), NULL, 0, NULL);
return ret;
}
static const struct i2c_device_id lp87565_id_table[] = {
{ "lp87565-q1", 0 },
{ },
};
MODULE_DEVICE_TABLE(i2c, lp87565_id_table);
static struct i2c_driver lp87565_driver = {
.driver = {
.name = "lp87565",
.of_match_table = of_lp87565_match_table,
},
.probe = lp87565_probe,
.id_table = lp87565_id_table,
};
module_i2c_driver(lp87565_driver);
MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("lp87565 chip family Multi-Function Device driver");
MODULE_LICENSE("GPL v2");
/*
* Functions to access LP87565 power management chip.
*
* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
*
* 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.
*/
#ifndef __LINUX_MFD_LP87565_H
#define __LINUX_MFD_LP87565_H
#include <linux/i2c.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
enum lp87565_device_type {
LP87565_DEVICE_TYPE_UNKNOWN = 0,
LP87565_DEVICE_TYPE_LP87565_Q1,
};
/* All register addresses */
#define LP87565_REG_DEV_REV 0X00
#define LP87565_REG_OTP_REV 0X01
#define LP87565_REG_BUCK0_CTRL_1 0X02
#define LP87565_REG_BUCK0_CTRL_2 0X03
#define LP87565_REG_BUCK1_CTRL_1 0X04
#define LP87565_REG_BUCK1_CTRL_2 0X05
#define LP87565_REG_BUCK2_CTRL_1 0X06
#define LP87565_REG_BUCK2_CTRL_2 0X07
#define LP87565_REG_BUCK3_CTRL_1 0X08
#define LP87565_REG_BUCK3_CTRL_2 0X09
#define LP87565_REG_BUCK0_VOUT 0X0A
#define LP87565_REG_BUCK0_FLOOR_VOUT 0X0B
#define LP87565_REG_BUCK1_VOUT 0X0C
#define LP87565_REG_BUCK1_FLOOR_VOUT 0X0D
#define LP87565_REG_BUCK2_VOUT 0X0E
#define LP87565_REG_BUCK2_FLOOR_VOUT 0X0F
#define LP87565_REG_BUCK3_VOUT 0X10
#define LP87565_REG_BUCK3_FLOOR_VOUT 0X11
#define LP87565_REG_BUCK0_DELAY 0X12
#define LP87565_REG_BUCK1_DELAY 0X13
#define LP87565_REG_BUCK2_DELAY 0X14
#define LP87565_REG_BUCK3_DELAY 0X15
#define LP87565_REG_GPO2_DELAY 0X16
#define LP87565_REG_GPO3_DELAY 0X17
#define LP87565_REG_RESET 0X18
#define LP87565_REG_CONFIG 0X19
#define LP87565_REG_INT_TOP_1 0X1A
#define LP87565_REG_INT_TOP_2 0X1B
#define LP87565_REG_INT_BUCK_0_1 0X1C
#define LP87565_REG_INT_BUCK_2_3 0X1D
#define LP87565_REG_TOP_STAT 0X1E
#define LP87565_REG_BUCK_0_1_STAT 0X1F
#define LP87565_REG_BUCK_2_3_STAT 0x20
#define LP87565_REG_TOP_MASK_1 0x21
#define LP87565_REG_TOP_MASK_2 0x22
#define LP87565_REG_BUCK_0_1_MASK 0x23
#define LP87565_REG_BUCK_2_3_MASK 0x24
#define LP87565_REG_SEL_I_LOAD 0x25
#define LP87565_REG_I_LOAD_2 0x26
#define LP87565_REG_I_LOAD_1 0x27
#define LP87565_REG_PGOOD_CTRL1 0x28
#define LP87565_REG_PGOOD_CTRL2 0x29
#define LP87565_REG_PGOOD_FLT 0x2A
#define LP87565_REG_PLL_CTRL 0x2B
#define LP87565_REG_PIN_FUNCTION 0x2C
#define LP87565_REG_GPIO_CONFIG 0x2D
#define LP87565_REG_GPIO_IN 0x2E
#define LP87565_REG_GPIO_OUT 0x2F
#define LP87565_REG_MAX LP87565_REG_GPIO_OUT
/* Register field definitions */
#define LP87565_DEV_REV_DEV_ID 0xC0
#define LP87565_DEV_REV_ALL_LAYER 0x30
#define LP87565_DEV_REV_METAL_LAYER 0x0F
#define LP87565_OTP_REV_OTP_ID 0xFF
#define LP87565_BUCK_CTRL_1_EN BIT(7)
#define LP87565_BUCK_CTRL_1_EN_PIN_CTRL BIT(6)
#define LP87565_BUCK_CTRL_1_PIN_SELECT_EN 0x30
#define LP87565_BUCK_CTRL_1_ROOF_FLOOR_EN BIT(3)
#define LP87565_BUCK_CTRL_1_RDIS_EN BIT(2)
#define LP87565_BUCK_CTRL_1_FPWM BIT(1)
/* Bit0 is reserved for BUCK1 and BUCK3 and valid only for BUCK0 and BUCK2 */
#define LP87565_BUCK_CTRL_1_FPWM_MP_0_2 BIT(0)
#define LP87565_BUCK_CTRL_2_ILIM 0x38
#define LP87565_BUCK_CTRL_2_SLEW_RATE 0x07
#define LP87565_BUCK_VSET 0xFF
#define LP87565_BUCK_FLOOR_VSET 0xFF
#define LP87565_BUCK_SHUTDOWN_DELAY 0xF0
#define LP87565_BUCK_STARTUP_DELAY 0x0F
#define LP87565_GPIO_SHUTDOWN_DELAY 0xF0
#define LP87565_GPIO_STARTUP_DELAY 0x0F
#define LP87565_RESET_SW_RESET BIT(0)
#define LP87565_CONFIG_DOUBLE_DELAY BIT(7)
#define LP87565_CONFIG_CLKIN_PD BIT(6)
#define LP87565_CONFIG_EN4_PD BIT(5)
#define LP87565_CONFIG_EN3_PD BIT(4)
#define LP87565_CONFIG_TDIE_WARN_LEVEL BIT(3)
#define LP87565_CONFIG_EN2_PD BIT(2)
#define LP87565_CONFIG_EN1_PD BIT(1)
#define LP87565_INT_GPIO BIT(7)
#define LP87565_INT_BUCK23 BIT(6)
#define LP87565_INT_BUCK01 BIT(5)
#define LP87565_NO_SYNC_CLK BIT(4)
#define LP87565_TDIE_SD BIT(3)
#define LP87565_TDIE_WARN BIT(2)
#define LP87565_INT_OVP BIT(1)
#define LP87565_I_LOAD_READY BIT(0)
#define LP87565_INT_TOP2_RESET_REG BIT(0)
#define LP87565_BUCK1_PG_INT BIT(6)
#define LP87565_BUCK1_SC_INT BIT(5)
#define LP87565_BUCK1_ILIM_INT BIT(4)
#define LP87565_BUCK0_PG_INT BIT(2)
#define LP87565_BUCK0_SC_INT BIT(1)
#define LP87565_BUCK0_ILIM_INT BIT(0)
#define LP87565_BUCK3_PG_INT BIT(6)
#define LP87565_BUCK3_SC_INT BIT(5)
#define LP87565_BUCK3_ILIM_INT BIT(4)
#define LP87565_BUCK2_PG_INT BIT(2)
#define LP87565_BUCK2_SC_INT BIT(1)
#define LP87565_BUCK2_ILIM_INT BIT(0)
#define LP87565_SYNC_CLK_STAT BIT(4)
#define LP87565_TDIE_SD_STAT BIT(3)
#define LP87565_TDIE_WARN_STAT BIT(2)
#define LP87565_OVP_STAT BIT(1)
#define LP87565_BUCK1_STAT BIT(7)
#define LP87565_BUCK1_PG_STAT BIT(6)
#define LP87565_BUCK1_ILIM_STAT BIT(4)
#define LP87565_BUCK0_STAT BIT(3)
#define LP87565_BUCK0_PG_STAT BIT(2)
#define LP87565_BUCK0_ILIM_STAT BIT(0)
#define LP87565_BUCK3_STAT BIT(7)
#define LP87565_BUCK3_PG_STAT BIT(6)
#define LP87565_BUCK3_ILIM_STAT BIT(4)
#define LP87565_BUCK2_STAT BIT(3)
#define LP87565_BUCK2_PG_STAT BIT(2)
#define LP87565_BUCK2_ILIM_STAT BIT(0)
#define LPL87565_GPIO_MASK BIT(7)
#define LPL87565_SYNC_CLK_MASK BIT(4)
#define LPL87565_TDIE_WARN_MASK BIT(2)
#define LPL87565_I_LOAD_READY_MASK BIT(0)
#define LPL87565_RESET_REG_MASK BIT(0)
#define LPL87565_BUCK1_PG_MASK BIT(6)
#define LPL87565_BUCK1_ILIM_MASK BIT(4)
#define LPL87565_BUCK0_PG_MASK BIT(2)
#define LPL87565_BUCK0_ILIM_MASK BIT(0)
#define LPL87565_BUCK3_PG_MASK BIT(6)
#define LPL87565_BUCK3_ILIM_MASK BIT(4)
#define LPL87565_BUCK2_PG_MASK BIT(2)
#define LPL87565_BUCK2_ILIM_MASK BIT(0)
#define LP87565_LOAD_CURRENT_BUCK_SELECT 0x3
#define LP87565_I_LOAD2_BUCK_LOAD_CURRENT 0x3
#define LP87565_I_LOAD1_BUCK_LOAD_CURRENT 0xFF
#define LP87565_PG3_SEL 0xC0
#define LP87565_PG2_SEL 0x30
#define LP87565_PG1_SEL 0x0C
#define LP87565_PG0_SEL 0x03
#define LP87565_HALF_DAY BIT(7)
#define LP87565_EN_PG0_NINT BIT(6)
#define LP87565_PGOOD_SET_DELAY BIT(5)
#define LP87565_EN_PGFLT_STAT BIT(4)
#define LP87565_PGOOD_WINDOW BIT(2)
#define LP87565_PGOOD_OD BIT(1)
#define LP87565_PGOOD_POL BIT(0)
#define LP87565_PG3_FLT BIT(3)
#define LP87565_PG2_FLT BIT(2)
#define LP87565_PG1_FLT BIT(1)
#define LP87565_PG0_FLT BIT(0)
#define LP87565_PLL_MODE 0xC0
#define LP87565_EXT_CLK_FREQ 0x1F
#define LP87565_EN_SPREAD_SPEC BIT(7)
#define LP87565_EN_PIN_CTRL_GPIO3 BIT(6)
#define LP87565_EN_PIN_SELECT_GPIO3 BIT(5)
#define LP87565_EN_PIN_CTRL_GPIO2 BIT(4)
#define LP87565_EN_PIN_SELECT_GPIO2 BIT(3)
#define LP87565_GPIO3_SEL BIT(2)
#define LP87565_GPIO2_SEL BIT(1)
#define LP87565_GPIO1_SEL BIT(0)
#define LP87565_GOIO3_OD BIT(6)
#define LP87565_GOIO2_OD BIT(5)
#define LP87565_GOIO1_OD BIT(4)
#define LP87565_GOIO3_DIR BIT(2)
#define LP87565_GOIO2_DIR BIT(1)
#define LP87565_GOIO1_DIR BIT(0)
#define LP87565_GOIO3_IN BIT(2)
#define LP87565_GOIO2_IN BIT(1)
#define LP87565_GOIO1_IN BIT(0)
#define LP87565_GOIO3_OUT BIT(2)
#define LP87565_GOIO2_OUT BIT(1)
#define LP87565_GOIO1_OUT BIT(0)
/* Number of step-down converters available */
#define LP87565_NUM_BUCK 6
enum LP87565_regulator_id {
/* BUCK's */
LP87565_BUCK_0,
LP87565_BUCK_1,
LP87565_BUCK_2,
LP87565_BUCK_3,
LP87565_BUCK_10,
LP87565_BUCK_23,
};
/**
* struct LP87565 - state holder for the LP87565 driver
* @dev: struct device pointer for MFD device
* @rev: revision of the LP87565
* @dev_type: The device type for example lp87565-q1
* @lock: lock guarding the data structure
* @regmap: register map of the LP87565 PMIC
*
* Device data may be used to access the LP87565 chip
*/
struct lp87565 {
struct device *dev;
u8 rev;
u8 dev_type;
struct regmap *regmap;
};
#endif /* __LINUX_MFD_LP87565_H */
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