1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
new file mode 100644
index 0000000000..bfd93902b4
--- /dev/null
+++ b/drivers/mfd/axp20x-i2c.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * I2C driver for the X-Powers' Power Management ICs
+ *
+ * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
+ * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
+ * as well as configurable GPIOs.
+ *
+ * This driver supports the I2C variants.
+ *
+ * Copyright (C) 2014 Carlo Caione
+ *
+ * Author: Carlo Caione <carlo@caione.org>
+ */
+
+#include <common.h>
+#include <of.h>
+#include <linux/err.h>
+#include <i2c/i2c.h>
+#include <module.h>
+#include <linux/mfd/axp20x.h>
+#include <linux/regmap.h>
+
+static int axp20x_i2c_probe(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct axp20x_dev *axp20x;
+	int ret;
+
+	axp20x = xzalloc(sizeof(*axp20x));
+
+	axp20x->dev = dev;
+
+	ret = axp20x_match_device(axp20x);
+	if (ret)
+		return ret;
+
+	axp20x->regmap = regmap_init_i2c(client, axp20x->regmap_cfg);
+	if (IS_ERR(axp20x->regmap))
+		return dev_err_probe(dev, PTR_ERR(axp20x->regmap),
+				     "regmap init failed\n");
+
+	ret = axp20x_device_probe(axp20x);
+	if (ret)
+		return ret;
+
+	return regmap_register_cdev(axp20x->regmap, NULL);
+}
+
+static const struct of_device_id axp20x_i2c_of_match[] = {
+	{ .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
+	{ .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
+	{ .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
+	{ .compatible = "x-powers,axp313a", .data = (void *)AXP313A_ID },
+	{ .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
+	{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
+	{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
+	{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
+
+static struct driver axp20x_i2c_driver = {
+	.name		= "axp20x-i2c",
+	.probe		= axp20x_i2c_probe,
+	.of_compatible	= DRV_OF_COMPAT(axp20x_i2c_of_match),
+};
+
+coredevice_i2c_driver(axp20x_i2c_driver);
+
+MODULE_DESCRIPTION("PMIC MFD I2C driver for AXP20X");
+MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
+MODULE_LICENSE("GPL");