mfd: max14577: Add max14577 MFD driver core

This patch adds max14577 core/irq driver to support MUIC(Micro USB IC)
device and charger device and support irq domain method to control
internal interrupt of max14577 device. Also, this patch supports DT
binding with max14577_i2c_parse_dt().

The MAXIM 14577 chip contains Micro-USB Interface Circuit and Li+ Battery
Charger. It contains accessory and USB charger detection logic. It supports
USB 2.0 Hi-Speed, UART and stereo audio signals over Micro-USB connector.

The battery charger is compliant with the USB Battery Charging Specification
Revision 1.1. It has also SFOUT LDO output for powering USB devices.

Reviewed-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/include/linux/mfd/max14577.h b/include/linux/mfd/max14577.h
new file mode 100644
index 000000000000..247b021dfaaf
--- /dev/null
+++ b/include/linux/mfd/max14577.h
@@ -0,0 +1,69 @@
+/*
+ * max14577.h - Driver for the Maxim 14577
+ *
+ * Copyright (C) 2013 Samsung Electrnoics
+ * Chanwoo Choi <cw00.choi@samsung.com>
+ * Krzysztof Kozlowski <k.kozlowski@samsung.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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * This driver is based on max8997.h
+ *
+ * MAX14577 has MUIC, Charger devices.
+ * The devices share the same I2C bus and interrupt line
+ * included in this mfd driver.
+ */
+
+#ifndef __MAX14577_H__
+#define __MAX14577_H__
+
+#include <linux/mfd/max14577-private.h>
+#include <linux/regulator/consumer.h>
+
+/*
+ * MAX14577 Regulator
+ */
+
+/* MAX14577 regulator IDs */
+enum max14577_regulators {
+	MAX14577_SAFEOUT = 0,
+	MAX14577_CHARGER,
+
+	MAX14577_REG_MAX,
+};
+
+struct max14577_regulator_platform_data {
+	int id;
+	struct regulator_init_data *initdata;
+	struct device_node *of_node;
+};
+
+/*
+ * MAX14577 MFD platform data
+ */
+struct max14577_platform_data {
+	/* IRQ */
+	int irq_base;
+
+	/* current control GPIOs */
+	int gpio_pogo_vbatt_en;
+	int gpio_pogo_vbus_en;
+
+	/* current control GPIO control function */
+	int (*set_gpio_pogo_vbatt_en) (int gpio_val);
+	int (*set_gpio_pogo_vbus_en) (int gpio_val);
+
+	int (*set_gpio_pogo_cb) (int new_dev);
+
+	struct max14577_regulator_platform_data *regulators;
+};
+
+#endif /* __MAX14577_H__ */