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[93.207.255.229]) by smtp.gmail.com with ESMTPSA id r9sm19158549wma.47.2020.03.22.15.46.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Mar 2020 15:46:35 -0700 (PDT) From: Saravanan Sekar To: lee.jones@linaro.org, robh+dt@kernel.org, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, sre@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pm@vger.kernel.org, Saravanan Sekar Subject: [PATCH v4 2/5] mfd: mp2629: Add support for mps battery charger Date: Sun, 22 Mar 2020 23:46:23 +0100 Message-Id: <20200322224626.13160-3-sravanhome@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200322224626.13160-1-sravanhome@gmail.com> References: <20200322224626.13160-1-sravanhome@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- drivers/mfd/Kconfig | 9 +++ drivers/mfd/Makefile | 2 + drivers/mfd/mp2629.c | 116 +++++++++++++++++++++++++++++++++++++ include/linux/mfd/mp2629.h | 22 +++++++ 4 files changed, 149 insertions(+) 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..6614e5cff881 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 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index f935d10cbf0f..d6c210f96d02 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -170,6 +170,8 @@ 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 diff --git a/drivers/mfd/mp2629.c b/drivers/mfd/mp2629.c new file mode 100644 index 000000000000..41a4082387ce --- /dev/null +++ b/drivers/mfd/mp2629.c @@ -0,0 +1,116 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * MP2629 MFD Driver for ADC and battery charger + * + * Copyright 2020 Monolithic Power Systems, Inc + * + * Author: Saravanan Sekar + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +enum { + MP2629_MFD_ADC, + MP2629_MFD_CHARGER, + MP2629_MFD_MAX +}; + +static struct resource mp2629_irq_rsrc[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static 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", + .resources = mp2629_irq_rsrc, + .num_resources = ARRAY_SIZE(mp2629_irq_rsrc), + } +}; + +static const struct regmap_config mp2629_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x17, +}; + +static int mp2629_probe(struct i2c_client *client) +{ + struct mp2629_info *info; + struct resource *resources; + int ret; + int i; + + info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->dev = &client->dev; + 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); + } + + for (i = 0; i < MP2629_MFD_MAX; i++) { + mp2629mfd[i].platform_data = &info->regmap; + mp2629mfd[i].pdata_size = sizeof(info->regmap); + + resources = (struct resource *)mp2629mfd[i].resources; + if (resources) { + resources[0].start = client->irq; + resources[0].end = client->irq; + } + } + + ret = devm_mfd_add_devices(info->dev, PLATFORM_DEVID_NONE, 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 = mp2629_of_match, + }, + .probe_new = mp2629_probe, + .id_table = mp2629_id, +}; +module_i2c_driver(mp2629_driver); + +MODULE_AUTHOR("Saravanan Sekar "); +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..371e44330ba8 --- /dev/null +++ b/include/linux/mfd/mp2629.h @@ -0,0 +1,22 @@ +/* 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 + +struct device; +struct regmap; + +struct mp2629_info { + struct device *dev; + struct regmap *regmap; +}; + +#endif -- 2.17.1