Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Saravanan Sekar <> | Subject | [PATCH 2/5] mfd: mp2629: Add support for mps battery charger | Date | Thu, 12 Mar 2020 18:26:46 +0100 |
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mp2629 is a highly-integrated switching-mode battery charge management device for single-cell Li-ion or Li-polymer battery.
Add MFD core enables chip access for ADC driver for battery readings, and a power supply battery-charger driver
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com> --- drivers/mfd/Kconfig | 43 +++++---------- drivers/mfd/Makefile | 4 +- drivers/mfd/mp2629.c | 109 +++++++++++++++++++++++++++++++++++++ include/linux/mfd/mp2629.h | 34 ++++++++++++ 4 files changed, 158 insertions(+), 32 deletions(-) create mode 100644 drivers/mfd/mp2629.c create mode 100644 include/linux/mfd/mp2629.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3c547ed575e6..6371ffb33a81 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -434,6 +434,15 @@ config MFD_MC13XXX_I2C help Select this if your MC13xxx is connected via an I2C bus. +config MFD_MP2629 + bool "Monolithic power system MP2629 ADC and Battery charger" + depends on I2C + select REGMAP_I2C + help + Select this option to enable support for Monolithic power system + Battery charger. This provides ADC, thermal, Battery charger power + management functions on the systems. + config MFD_MXS_LRADC tristate "Freescale i.MX23/i.MX28 LRADC" depends on ARCH_MXS || COMPILE_TEST @@ -642,19 +651,6 @@ config MFD_IPAQ_MICRO AT90LS8535 microcontroller flashed with a special iPAQ firmware using the custom protocol implemented in this driver. -config MFD_IQS62X - tristate "Azoteq IQS620A/621/622/624/625 core support" - depends on I2C - select MFD_CORE - select REGMAP_I2C - help - Say Y here if you want to build core support for the Azoteq IQS620A, - IQS621, IQS622, IQS624 and IQS625 multi-function sensors. Additional - options must be selected to enable device-specific functions. - - To compile this driver as a module, choose M here: the module will - be called iqs62x. - config MFD_JANZ_CMODIO tristate "Janz CMOD-IO PCI MODULbus Carrier Board" select MFD_CORE @@ -906,7 +902,6 @@ config MFD_CPCAP tristate "Support for Motorola CPCAP" depends on SPI depends on OF || COMPILE_TEST - select MFD_CORE select REGMAP_SPI select REGMAP_IRQ help @@ -1215,7 +1210,7 @@ config AB8500_CORE chip. This connects to U8500 either on the SSP/SPI bus (deprecated since hardware version v1.0) or the I2C bus via PRCMU. It also adds the irq_chip parts for handling the Mixed Signal chip events. - This chip embeds various other multimedia functionalities as well. + This chip embeds various other multimedia funtionalities as well. config AB8500_DEBUG bool "Enable debug info via debugfs" @@ -1865,7 +1860,7 @@ config MFD_WM8994 has on board GPIO and regulator functionality which is supported via the relevant subsystems. This driver provides core support for the WM8994, in order to use the actual - functionality of the device other drivers must be enabled. + functionaltiy of the device other drivers must be enabled. config MFD_WM97xx tristate "Wolfson Microelectronics WM97xx" @@ -1878,7 +1873,7 @@ config MFD_WM97xx designed for smartphone applications. As well as audio functionality it has on board GPIO and a touchscreen functionality which is supported via the relevant subsystems. This driver provides core - support for the WM97xx, in order to use the actual functionality of + support for the WM97xx, in order to use the actual functionaltiy of the device other drivers must be enabled. config MFD_STW481X @@ -1971,7 +1966,7 @@ config MFD_STPMIC1 Support for ST Microelectronics STPMIC1 PMIC. STPMIC1 has power on key, watchdog and regulator functionalities which are supported via the relevant subsystems. This driver provides core support for the - STPMIC1. In order to use the actual functionality of the device other + STPMIC1. In order to use the actual functionaltiy of the device other drivers must be enabled. To compile this driver as a module, choose M here: the @@ -1990,18 +1985,6 @@ config MFD_STMFX additional drivers must be enabled in order to use the functionality of the device. -config MFD_WCD934X - tristate "Support for WCD9340/WCD9341 Codec" - depends on SLIMBUS - select REGMAP - select REGMAP_SLIMBUS - select REGMAP_IRQ - select MFD_CORE - help - Support for the Qualcomm WCD9340/WCD9341 Codec. - This driver provides common support WCD934x audio codec and its - associated Pin Controller, Soundwire Controller and Audio codec. - menu "Multimedia Capabilities Port drivers" depends on ARCH_SA1100 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index f935d10cbf0f..b91db03d041a 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -58,7 +58,6 @@ endif ifeq ($(CONFIG_MFD_CS47L24),y) obj-$(CONFIG_MFD_ARIZONA) += cs47l24-tables.o endif -obj-$(CONFIG_MFD_WCD934X) += wcd934x.o obj-$(CONFIG_MFD_WM8400) += wm8400-core.o wm831x-objs := wm831x-core.o wm831x-irq.o wm831x-otp.o wm831x-objs += wm831x-auxadc.o @@ -170,6 +169,8 @@ obj-$(CONFIG_MFD_MAX8925) += max8925.o obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o obj-$(CONFIG_MFD_MAX8998) += max8998.o max8998-irq.o +obj-$(CONFIG_MFD_MP2629) += mp2629.o + pcf50633-objs := pcf50633-core.o pcf50633-irq.o obj-$(CONFIG_MFD_PCF50633) += pcf50633.o obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o @@ -226,7 +227,6 @@ obj-$(CONFIG_MFD_AS3711) += as3711.o obj-$(CONFIG_MFD_AS3722) += as3722.o obj-$(CONFIG_MFD_STW481X) += stw481x.o obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o -obj-$(CONFIG_MFD_IQS62X) += iqs62x.o obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o diff --git a/drivers/mfd/mp2629.c b/drivers/mfd/mp2629.c new file mode 100644 index 000000000000..6b7a11555760 --- /dev/null +++ b/drivers/mfd/mp2629.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * MP2629 MFD Driver for ADC and battery charger + * + * Copyright 2020 Monolithic Power Systems, Inc + * + * Author: Saravanan Sekar <sravanhome@gmail.com> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/irq.h> +#include <linux/interrupt.h> +#include <linux/mfd/core.h> +#include <linux/mfd/mp2629.h> + +enum { + MP2629_MFD_ADC, + MP2629_MFD_CHARGER, + MP2629_MFD_MAX +}; + +static const struct mfd_cell mp2629mfd[] = { + [MP2629_MFD_ADC] = { + .name = "mp2629_adc", + .of_compatible = "mps,mp2629_adc", + }, + [MP2629_MFD_CHARGER] = { + .name = "mp2629_charger", + .of_compatible = "mps,mp2629_charger", + } +}; + +static const struct regmap_config mp2629_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x17, +}; + +int mp2629_set_value(struct regmap *map, u8 reg, u8 mask, unsigned int val) +{ + return regmap_update_bits(map, reg, mask, val); +} +EXPORT_SYMBOL(mp2629_set_value); + +int mp2629_get_value(struct regmap *map, u8 reg, unsigned int *val) +{ + return regmap_read(map, reg, val); +} +EXPORT_SYMBOL(mp2629_get_value); + +static int mp2629_probe(struct i2c_client *client) +{ + struct mp2629_info *info; + int ret; + + info = devm_kzalloc(&client->dev, sizeof(struct mp2629_info), + GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->dev = &client->dev; + info->irq = client->irq; + i2c_set_clientdata(client, info); + + info->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config); + if (IS_ERR(info->regmap)) { + dev_err(info->dev, "Failed to allocate regmap!\n"); + return PTR_ERR(info->regmap); + } + + ret = devm_mfd_add_devices(info->dev, -1, mp2629mfd, + ARRAY_SIZE(mp2629mfd), NULL, + 0, NULL); + if (ret) + dev_err(info->dev, "Failed to add mfd %d\n", ret); + + return ret; +} + +static const struct of_device_id mp2629_of_match[] = { + { .compatible = "mps,mp2629"}, + {}, +}; +MODULE_DEVICE_TABLE(of, mp2629_of_match); + +static const struct i2c_device_id mp2629_id[] = { + { "mp2629", }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, mp2629_id); + +static struct i2c_driver mp2629_driver = { + .driver = { + .name = "mp2629", + .of_match_table = of_match_ptr(mp2629_of_match), + }, + .probe_new = mp2629_probe, + .id_table = mp2629_id, +}; +module_i2c_driver(mp2629_driver); + +MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>"); +MODULE_DESCRIPTION("MP2629 Battery charger mfd driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/mp2629.h b/include/linux/mfd/mp2629.h new file mode 100644 index 000000000000..4af9defd0c45 --- /dev/null +++ b/include/linux/mfd/mp2629.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * mp2629.h - register definitions for mp2629 charger + * + * Copyright 2020 Monolithic Power Systems, Inc + * + */ + +#ifndef __MP2629_H__ +#define __MP2629_H__ + +#include <linux/platform_device.h> +#include <linux/i2c.h> +#include <linux/regmap.h> + +struct mp2629_info { + struct device *dev; + struct regmap *regmap; + int irq; +}; + +enum mp2629_adc_chan { + MP2629_BATT_VOLT, + MP2629_SYSTEM_VOLT, + MP2629_INPUT_VOLT, + MP2629_BATT_CURRENT, + MP2629_INPUT_CURRENT, + MP2629_ADC_CHAN_END +}; + +int mp2629_set_value(struct regmap *map, u8 reg, u8 mask, unsigned int val); +int mp2629_get_value(struct regmap *map, u8 reg, unsigned int *val); + +#endif -- 2.17.1
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