Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 107 insertions, 0 deletions

diff --git a/kernel/include/linux/mfd/max14577.h b/kernel/include/linux/mfd/max14577.h
new file mode 100644
index 000000000..ccfaf952c
--- /dev/null
+++ b/kernel/include/linux/mfd/max14577.h
@@ -0,0 +1,107 @@
+/*
+ * max14577.h - Driver for the Maxim 14577/77836
+ *
+ * Copyright (C) 2014 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.
+ *
+ * MAX77836 has additional PMIC and Fuel-Gauge on different I2C slave
+ * addresses.
+ */
+
+#ifndef __MAX14577_H__
+#define __MAX14577_H__
+
+#include <linux/regulator/consumer.h>
+
+/* MAX14577 regulator IDs */
+enum max14577_regulators {
+	MAX14577_SAFEOUT = 0,
+	MAX14577_CHARGER,
+
+	MAX14577_REGULATOR_NUM,
+};
+
+/* MAX77836 regulator IDs */
+enum max77836_regulators {
+	MAX77836_SAFEOUT = 0,
+	MAX77836_CHARGER,
+	MAX77836_LDO1,
+	MAX77836_LDO2,
+
+	MAX77836_REGULATOR_NUM,
+};
+
+struct max14577_regulator_platform_data {
+	int id;
+	struct regulator_init_data *initdata;
+	struct device_node *of_node;
+};
+
+struct max14577_charger_platform_data {
+	u32 constant_uvolt;
+	u32 fast_charge_uamp;
+	u32 eoc_uamp;
+	u32 ovp_uvolt;
+};
+
+/*
+ * 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;
+};
+
+/*
+ * Valid limits of current for max14577 and max77836 chargers.
+ * They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4
+ * register for given chipset.
+ */
+struct maxim_charger_current {
+	/* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */
+	unsigned int min;
+	/*
+	 * Minimal current when high setting is active,
+	 * set in CHGCTRL4/MBCICHWRCH, uA
+	 */
+	unsigned int high_start;
+	/* Value of one step in high setting, uA */
+	unsigned int high_step;
+	/* Maximum current of high setting, uA */
+	unsigned int max;
+};
+
+extern const struct maxim_charger_current maxim_charger_currents[];
+extern int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits,
+		unsigned int min_ua, unsigned int max_ua, u8 *dst);
+
+#endif /* __MAX14577_H__ */