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Date: Mon, 6 Jun 2016 09:06:19 +0530
From: Keerthy <a0393675@...com>
To: Lee Jones <lee.jones@...aro.org>
CC: Keerthy <j-keerthy@...com>, <broonie@...nel.org>,
<tony@...mide.com>, <robh+dt@...nel.org>, <mark.rutland@....com>,
<linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] mfd: lp873x: Add lp873x PMIC support
Hi Lee Jones,
On Tuesday 17 May 2016 04:19 PM, Lee Jones wrote:
> On Tue, 17 May 2016, Keerthy wrote:
>
>>
>>
>> On Friday 13 May 2016 09:18 AM, Keerthy wrote:
>>> 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).
>>
>> Hi Lee Jones,
>>
>> I fixed your comments on v2 and posted this version last week.
>
> I can see it. It's marked as "to-review" in my Inbox.
>
> Sending pings will not speed up the process.
>
> ... and the merge window is open too.
A gentle ping on this.
>
>>> Signed-off-by: Keerthy <j-keerthy@...com>
>>> ---
>>>
>>> Changes in v3:
>>>
>>> * Reordered the probe code.
>>> * Fixed Typo in Kconfig description.
>>> * Removed unused member from struct lp873x.
>>>
>>> drivers/mfd/Kconfig | 14 +++
>>> drivers/mfd/Makefile | 2 +
>>> drivers/mfd/lp873x.c | 96 +++++++++++++++++
>>> include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
>>> 4 files changed, 376 insertions(+)
>>> create mode 100644 drivers/mfd/lp873x.c
>>> create mode 100644 include/linux/mfd/lp873x.h
>>>
>>> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
>>> index eea61e3..a7e48e7 100644
>>> --- a/drivers/mfd/Kconfig
>>> +++ b/drivers/mfd/Kconfig
>>> @@ -1185,6 +1185,20 @@ config MFD_TPS65217
>>> This driver can also be built as a module. If so, the module
>>> will be called tps65217.
>>>
>>> +config MFD_LP873X
>>> + tristate "TI LP873X Power Management IC"
>>> + depends on I2C
>>> + select MFD_CORE
>>> + select REGMAP_I2C
>>> + help
>>> + If you say yes here then you get support for the LP873X 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 lp873x.
>>> +
>>> config MFD_TPS65218
>>> tristate "TI TPS65218 Power Management chips"
>>> depends on I2C
>>> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
>>> index 5eaa6465d..617c688 100644
>>> --- a/drivers/mfd/Makefile
>>> +++ b/drivers/mfd/Makefile
>>> @@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
>>> obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
>>> obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
>>>
>>> +obj-$(CONFIG_MFD_LP873X) += lp873x.o
>>> +
>>> obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o
>>> obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
>>> obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o
>>> diff --git a/drivers/mfd/lp873x.c b/drivers/mfd/lp873x.c
>>> new file mode 100644
>>> index 0000000..ba49d56
>>> --- /dev/null
>>> +++ b/drivers/mfd/lp873x.c
>>> @@ -0,0 +1,96 @@
>>> +/*
>>> + * Copyright (C) 2016 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.
>>> + *
>>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
>>> + * kind, whether express or implied; without even the implied warranty
>>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>> + * GNU General Public License for more details.
>>> + */
>>> +
>>> +#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/lp873x.h>
>>> +
>>> +static const struct regmap_config lp873x_regmap_config = {
>>> + .reg_bits = 8,
>>> + .val_bits = 8,
>>> + .max_register = LP873X_REG_MAX,
>>> +};
>>> +
>>> +static const struct mfd_cell lp873x_cells[] = {
>>> + { .name = "lp873x-regulator", },
>>> +};
>>> +
>>> +static int lp873x_probe(struct i2c_client *client,
>>> + const struct i2c_device_id *ids)
>>> +{
>>> + struct lp873x *lp873;
>>> + int ret;
>>> + unsigned int otpid;
>>> +
>>> + lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL);
>>> + if (!lp873)
>>> + return -ENOMEM;
>>> +
>>> + lp873->dev = &client->dev;
>>> +
>>> + lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config);
>>> + if (IS_ERR(lp873->regmap)) {
>>> + ret = PTR_ERR(lp873->regmap);
>>> + dev_err(lp873->dev, "Failed to initialize register map: %d\n",
>>> + ret);
>>> + return ret;
>>> + }
>>> +
>>> + mutex_init(&lp873->lp873_lock);
>>> +
>>> + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
>>> + if (ret) {
>>> + dev_err(lp873->dev, "Failed to read OTP ID\n");
>>> + return ret;
>>> + }
>>> +
>>> + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
>>> + i2c_set_clientdata(client, lp873);
>>> + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
>>> + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static const struct of_device_id of_lp873x_match_table[] = {
>>> + { .compatible = "ti,lp8733", },
>>> + { .compatible = "ti,lp8732", },
>>> + {}
>>> +};
>>> +MODULE_DEVICE_TABLE(of, of_lp873x_match_table);
>>> +
>>> +static const struct i2c_device_id lp873x_id_table[] = {
>>> + { "lp873x", LP873X },
>>> + { "lp8732", LP873X },
>>> + { "lp8733", LP873X },
>>> + { },
>>> +};
>>> +MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
>>> +
>>> +static struct i2c_driver lp873x_driver = {
>>> + .driver = {
>>> + .name = "lp873x",
>>> + .of_match_table = of_lp873x_match_table,
>>> + },
>>> + .probe = lp873x_probe,
>>> + .id_table = lp873x_id_table,
>>> +};
>>> +module_i2c_driver(lp873x_driver);
>>> +
>>> +MODULE_AUTHOR("J Keerthy <j-keerthy@...com>");
>>> +MODULE_DESCRIPTION("LP873X chip family multi-function driver");
>>> +MODULE_LICENSE("GPL v2");
>>> diff --git a/include/linux/mfd/lp873x.h b/include/linux/mfd/lp873x.h
>>> new file mode 100644
>>> index 0000000..fb7ec55
>>> --- /dev/null
>>> +++ b/include/linux/mfd/lp873x.h
>>> @@ -0,0 +1,264 @@
>>> +/*
>>> + * Functions to access LP873X power management chip.
>>> + *
>>> + * Copyright (C) 2016 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.
>>> + *
>>> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
>>> + * kind, whether express or implied; without even the implied warranty
>>> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>>> + * GNU General Public License for more details.
>>> + */
>>> +
>>> +#ifndef __LINUX_MFD_LP873X_H
>>> +#define __LINUX_MFD_LP873X_H
>>> +
>>> +#include <linux/i2c.h>
>>> +#include <linux/regulator/driver.h>
>>> +#include <linux/regulator/machine.h>
>>> +
>>> +/* LP873x chip id list */
>>> +#define LP873X 0x00
>>> +
>>> +/* All register addresses */
>>> +#define LP873X_REG_DEV_REV 0X00
>>> +#define LP873X_REG_OTP_REV 0X01
>>> +#define LP873X_REG_BUCK0_CTRL_1 0X02
>>> +#define LP873X_REG_BUCK0_CTRL_2 0X03
>>> +#define LP873X_REG_BUCK1_CTRL_1 0X04
>>> +#define LP873X_REG_BUCK1_CTRL_2 0X05
>>> +#define LP873X_REG_BUCK0_VOUT 0X06
>>> +#define LP873X_REG_BUCK1_VOUT 0X07
>>> +#define LP873X_REG_LDO0_CTRL 0X08
>>> +#define LP873X_REG_LDO1_CTRL 0X09
>>> +#define LP873X_REG_LDO0_VOUT 0X0A
>>> +#define LP873X_REG_LDO1_VOUT 0X0B
>>> +#define LP873X_REG_BUCK0_DELAY 0X0C
>>> +#define LP873X_REG_BUCK1_DELAY 0X0D
>>> +#define LP873X_REG_LDO0_DELAY 0X0E
>>> +#define LP873X_REG_LDO1_DELAY 0X0F
>>> +#define LP873X_REG_GPO_DELAY 0X10
>>> +#define LP873X_REG_GPO2_DELAY 0X11
>>> +#define LP873X_REG_GPO_CTRL 0X12
>>> +#define LP873X_REG_CONFIG 0X13
>>> +#define LP873X_REG_PLL_CTRL 0X14
>>> +#define LP873X_REG_PGOOD_CTRL1 0X15
>>> +#define LP873X_REG_PGOOD_CTRL2 0X16
>>> +#define LP873X_REG_PG_FAULT 0X17
>>> +#define LP873X_REG_RESET 0X18
>>> +#define LP873X_REG_INT_TOP_1 0X19
>>> +#define LP873X_REG_INT_TOP_2 0X1A
>>> +#define LP873X_REG_INT_BUCK 0X1B
>>> +#define LP873X_REG_INT_LDO 0X1C
>>> +#define LP873X_REG_TOP_STAT 0X1D
>>> +#define LP873X_REG_BUCK_STAT 0X1E
>>> +#define LP873X_REG_LDO_STAT 0x1F
>>> +#define LP873X_REG_TOP_MASK_1 0x20
>>> +#define LP873X_REG_TOP_MASK_2 0x21
>>> +#define LP873X_REG_BUCK_MASK 0x22
>>> +#define LP873X_REG_LDO_MASK 0x23
>>> +#define LP873X_REG_SEL_I_LOAD 0x24
>>> +#define LP873X_REG_I_LOAD_2 0x25
>>> +#define LP873X_REG_I_LOAD_1 0x26
>>> +
>>> +#define LP873X_REG_MAX LP873X_REG_I_LOAD_1
>>> +
>>> +/* Register field definitions */
>>> +#define LP873X_DEV_REV_DEV_ID 0xC0
>>> +#define LP873X_DEV_REV_ALL_LAYER 0x30
>>> +#define LP873X_DEV_REV_METAL_LAYER 0x0F
>>> +
>>> +#define LP873X_OTP_REV_OTP_ID 0xFF
>>> +
>>> +#define LP873X_BUCK0_CTRL_1_BUCK0_FPWM BIT(3)
>>> +#define LP873X_BUCK0_CTRL_1_BUCK0_RDIS_EN BIT(2)
>>> +#define LP873X_BUCK0_CTRL_1_BUCK0_EN_PIN_CTRL BIT(1)
>>> +#define LP873X_BUCK0_CTRL_1_BUCK0_EN BIT(0)
>>> +
>>> +#define LP873X_BUCK0_CTRL_2_BUCK0_ILIM 0x38
>>> +#define LP873X_BUCK0_CTRL_2_BUCK0_SLEW_RATE 0x07
>>> +
>>> +#define LP873X_BUCK1_CTRL_1_BUCK1_FPWM BIT(3)
>>> +#define LP873X_BUCK1_CTRL_1_BUCK1_RDIS_EN BIT(2)
>>> +#define LP873X_BUCK1_CTRL_1_BUCK1_EN_PIN_CTRL BIT(1)
>>> +#define LP873X_BUCK1_CTRL_1_BUCK1_EN BIT(0)
>>> +
>>> +#define LP873X_BUCK1_CTRL_2_BUCK1_ILIM 0x38
>>> +#define LP873X_BUCK1_CTRL_2_BUCK1_SLEW_RATE 0x07
>>> +
>>> +#define LP873X_BUCK0_VOUT_BUCK0_VSET 0xFF
>>> +
>>> +#define LP873X_BUCK1_VOUT_BUCK1_VSET 0xFF
>>> +
>>> +#define LP873X_LDO0_CTRL_LDO0_RDIS_EN BIT(2)
>>> +#define LP873X_LDO0_CTRL_LDO0_EN_PIN_CTRL BIT(1)
>>> +#define LP873X_LDO0_CTRL_LDO0_EN BIT(0)
>>> +
>>> +#define LP873X_LDO1_CTRL_LDO1_RDIS_EN BIT(2)
>>> +#define LP873X_LDO1_CTRL_LDO1_EN_PIN_CTRL BIT(1)
>>> +#define LP873X_LDO1_CTRL_LDO1_EN BIT(0)
>>> +
>>> +#define LP873X_LDO0_VOUT_LDO0_VSET 0x1F
>>> +
>>> +#define LP873X_LDO1_VOUT_LDO1_VSET 0x1F
>>> +
>>> +#define LP873X_BUCK0_DELAY_BUCK0_SD_DELAY 0xF0
>>> +#define LP873X_BUCK0_DELAY_BUCK0_SU_DELAY 0x0F
>>> +
>>> +#define LP873X_BUCK1_DELAY_BUCK1_SD_DELAY 0xF0
>>> +#define LP873X_BUCK1_DELAY_BUCK1_SU_DELAY 0x0F
>>> +
>>> +#define LP873X_LDO0_DELAY_LDO0_SD_DELAY 0xF0
>>> +#define LP873X_LDO0_DELAY_LDO0_SU_DELAY 0x0F
>>> +
>>> +#define LP873X_LDO1_DELAY_LDO1_SD_DELAY 0xF0
>>> +#define LP873X_LDO1_DELAY_LDO1_SU_DELAY 0x0F
>>> +
>>> +#define LP873X_GPO_DELAY_GPO_SD_DELAY 0xF0
>>> +#define LP873X_GPO_DELAY_GPO_SU_DELAY 0x0F
>>> +
>>> +#define LP873X_GPO2_DELAY_GPO2_SD_DELAY 0xF0
>>> +#define LP873X_GPO2_DELAY_GPO2_SU_DELAY 0x0F
>>> +
>>> +#define LP873X_GPO_CTRL_GPO2_OD BIT(6)
>>> +#define LP873X_GPO_CTRL_GPO2_EN_PIN_CTRL BIT(5)
>>> +#define LP873X_GPO_CTRL_GPO2_EN BIT(4)
>>> +#define LP873X_GPO_CTRL_GPO_OD BIT(2)
>>> +#define LP873X_GPO_CTRL_GPO_EN_PIN_CTRL BIT(1)
>>> +#define LP873X_GPO_CTRL_GPO_EN BIT(0)
>>> +
>>> +#define LP873X_CONFIG_SU_DELAY_SEL BIT(6)
>>> +#define LP873X_CONFIG_SD_DELAY_SEL BIT(5)
>>> +#define LP873X_CONFIG_CLKIN_PIN_SEL BIT(4)
>>> +#define LP873X_CONFIG_CLKIN_PD BIT(3)
>>> +#define LP873X_CONFIG_EN_PD BIT(2)
>>> +#define LP873X_CONFIG_TDIE_WARN_LEVEL BIT(1)
>>> +#define LP873X_EN_SPREAD_SPEC BIT(0)
>>> +
>>> +#define LP873X_PLL_CTRL_EN_PLL BIT(6)
>>> +#define LP873X_EXT_CLK_FREQ 0x1F
>>> +
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_POL BIT(7)
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_OD BIT(6)
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_WINDOW_LDO BIT(5)
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_WINDOWN_BUCK BIT(4)
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO1 BIT(3)
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO0 BIT(2)
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK1 BIT(1)
>>> +#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK0 BIT(0)
>>> +
>>> +#define LP873X_PGOOD_CTRL2_EN_PGOOD_TWARN BIT(2)
>>> +#define LP873X_PGOOD_CTRL2_EN_PG_FAULT_GATE BIT(1)
>>> +#define LP873X_PGOOD_CTRL2_PGOOD_MODE BIT(0)
>>> +
>>> +#define LP873X_PG_FAULT_PG_FAULT_LDO1 BIT(3)
>>> +#define LP873X_PG_FAULT_PG_FAULT_LDO0 BIT(2)
>>> +#define LP873X_PG_FAULT_PG_FAULT_BUCK1 BIT(1)
>>> +#define LP873X_PG_FAULT_PG_FAULT_BUCK0 BIT(0)
>>> +
>>> +#define LP873X_RESET_SW_RESET BIT(0)
>>> +
>>> +#define LP873X_INT_TOP_1_PGOOD_INT BIT(7)
>>> +#define LP873X_INT_TOP_1_LDO_INT BIT(6)
>>> +#define LP873X_INT_TOP_1_BUCK_INT BIT(5)
>>> +#define LP873X_INT_TOP_1_SYNC_CLK_INT BIT(4)
>>> +#define LP873X_INT_TOP_1_TDIE_SD_INT BIT(3)
>>> +#define LP873X_INT_TOP_1_TDIE_WARN_INT BIT(2)
>>> +#define LP873X_INT_TOP_1_OVP_INT BIT(1)
>>> +#define LP873X_INT_TOP_1_I_MEAS_INT BIT(0)
>>> +
>>> +#define LP873X_INT_TOP_2_RESET_REG_INT BIT(0)
>>> +
>>> +#define LP873X_INT_BUCK_BUCK1_PG_INT BIT(6)
>>> +#define LP873X_INT_BUCK_BUCK1_SC_INT BIT(5)
>>> +#define LP873X_INT_BUCK_BUCK1_ILIM_INT BIT(4)
>>> +#define LP873X_INT_BUCK_BUCK0_PG_INT BIT(2)
>>> +#define LP873X_INT_BUCK_BUCK0_SC_INT BIT(1)
>>> +#define LP873X_INT_BUCK_BUCK0_ILIM_INT BIT(0)
>>> +
>>> +#define LP873X_INT_LDO_LDO1_PG_INT BIT(6)
>>> +#define LP873X_INT_LDO_LDO1_SC_INT BIT(5)
>>> +#define LP873X_INT_LDO_LDO1_ILIM_INT BIT(4)
>>> +#define LP873X_INT_LDO_LDO0_PG_INT BIT(2)
>>> +#define LP873X_INT_LDO_LDO0_SC_INT BIT(1)
>>> +#define LP873X_INT_LDO_LDO0_ILIM_INT BIT(0)
>>> +
>>> +#define LP873X_TOP_STAT_PGOOD_STAT BIT(7)
>>> +#define LP873X_TOP_STAT_SYNC_CLK_STAT BIT(4)
>>> +#define LP873X_TOP_STAT_TDIE_SD_STAT BIT(3)
>>> +#define LP873X_TOP_STAT_TDIE_WARN_STAT BIT(2)
>>> +#define LP873X_TOP_STAT_OVP_STAT BIT(1)
>>> +
>>> +#define LP873X_BUCK_STAT_BUCK1_STAT BIT(7)
>>> +#define LP873X_BUCK_STAT_BUCK1_PG_STAT BIT(6)
>>> +#define LP873X_BUCK_STAT_BUCK1_ILIM_STAT BIT(4)
>>> +#define LP873X_BUCK_STAT_BUCK0_STAT BIT(3)
>>> +#define LP873X_BUCK_STAT_BUCK0_PG_STAT BIT(2)
>>> +#define LP873X_BUCK_STAT_BUCK0_ILIM_STAT BIT(0)
>>> +
>>> +#define LP873X_LDO_STAT_LDO1_STAT BIT(7)
>>> +#define LP873X_LDO_STAT_LDO1_PG_STAT BIT(6)
>>> +#define LP873X_LDO_STAT_LDO1_ILIM_STAT BIT(4)
>>> +#define LP873X_LDO_STAT_LDO0_STAT BIT(3)
>>> +#define LP873X_LDO_STAT_LDO0_PG_STAT BIT(2)
>>> +#define LP873X_LDO_STAT_LDO0_ILIM_STAT BIT(0)
>>> +
>>> +#define LP873X_TOP_MASK_1_PGOOD_INT_MASK BIT(7)
>>> +#define LP873X_TOP_MASK_1_SYNC_CLK_MASK BIT(4)
>>> +#define LP873X_TOP_MASK_1_TDIE_WARN_MASK BIT(2)
>>> +#define LP873X_TOP_MASK_1_I_MEAS_MASK BIT(0)
>>> +
>>> +#define LP873X_TOP_MASK_2_RESET_REG_MASK BIT(0)
>>> +
>>> +#define LP873X_BUCK_MASK_BUCK1_PGF_MASK BIT(7)
>>> +#define LP873X_BUCK_MASK_BUCK1_PGR_MASK BIT(6)
>>> +#define LP873X_BUCK_MASK_BUCK1_ILIM_MASK BIT(4)
>>> +#define LP873X_BUCK_MASK_BUCK0_PGF_MASK BIT(3)
>>> +#define LP873X_BUCK_MASK_BUCK0_PGR_MASK BIT(2)
>>> +#define LP873X_BUCK_MASK_BUCK0_ILIM_MASK BIT(0)
>>> +
>>> +#define LP873X_LDO_MASK_LDO1_PGF_MASK BIT(7)
>>> +#define LP873X_LDO_MASK_LDO1_PGR_MASK BIT(6)
>>> +#define LP873X_LDO_MASK_LDO1_ILIM_MASK BIT(4)
>>> +#define LP873X_LDO_MASK_LDO0_PGF_MASK BIT(3)
>>> +#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
>>> + * Device data may be used to access the LP873X chip
>>> + */
>>> +struct lp873x {
>>> + struct device *dev;
>>> + u8 rev;
>>> + struct mutex lp873_lock; /* lock guarding the data structure */
>>> + struct regmap *regmap;
>>> +};
>>> +#endif /* __LINUX_MFD_LP873X_H */
>>>
>
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