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: Keerthy <j-keerthy@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 1428814..94ad2c1 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1351,6 +1351,20 @@
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 6f6aed8..080793b 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -25,6 +25,7 @@
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 0000000..340ad0c
--- /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");
