diff options
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/lp87565.txt | 43 | ||||
| -rw-r--r-- | drivers/mfd/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mfd/lp87565.c | 100 | ||||
| -rw-r--r-- | include/linux/mfd/lp87565.h | 270 |
5 files changed, 428 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/lp87565.txt b/Documentation/devicetree/bindings/mfd/lp87565.txt new file mode 100644 index 000000000000..a48df7c08ab0 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/lp87565.txt @@ -0,0 +1,43 @@ +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; + }; + }; +}; diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 1428814c33f9..94ad2c1c3d90 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -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 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 6f6aed8cfccc..080793b3fd0e 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -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 diff --git a/drivers/mfd/lp87565.c b/drivers/mfd/lp87565.c new file mode 100644 index 000000000000..340ad0c63744 --- /dev/null +++ b/drivers/mfd/lp87565.c @@ -0,0 +1,100 @@ +/* + * 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"); diff --git a/include/linux/mfd/lp87565.h b/include/linux/mfd/lp87565.h new file mode 100644 index 000000000000..d0c91ba65525 --- /dev/null +++ b/include/linux/mfd/lp87565.h @@ -0,0 +1,270 @@ +/* + * 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 */ |