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, 100 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-omap2/gpmc-smsc911x.c b/kernel/arch/arm/mach-omap2/gpmc-smsc911x.c
new file mode 100644
index 000000000..2757504a1
--- /dev/null
+++ b/kernel/arch/arm/mach-omap2/gpmc-smsc911x.c
@@ -0,0 +1,100 @@
+/*
+ * linux/arch/arm/mach-omap2/gpmc-smsc911x.c
+ *
+ * Copyright (C) 2009 Li-Pro.Net
+ * Stephan Linz <linz@li-pro.net>
+ *
+ * Modified from linux/arch/arm/mach-omap2/gpmc-smc91x.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/smsc911x.h>
+
+#include "gpmc.h"
+#include "gpmc-smsc911x.h"
+
+static struct resource gpmc_smsc911x_resources[] = {
+	[0] = {
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.flags		= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
+	},
+};
+
+static struct smsc911x_platform_config gpmc_smsc911x_config = {
+	.phy_interface	= PHY_INTERFACE_MODE_MII,
+	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
+	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
+};
+
+/*
+ * Initialize smsc911x device connected to the GPMC. Note that we
+ * assume that pin multiplexing is done in the board-*.c file,
+ * or in the bootloader.
+ */
+void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *gpmc_cfg)
+{
+	struct platform_device *pdev;
+	unsigned long cs_mem_base;
+	int ret;
+
+	if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
+		pr_err("Failed to request GPMC mem region\n");
+		return;
+	}
+
+	gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;
+	gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;
+
+	if (gpio_request_one(gpmc_cfg->gpio_irq, GPIOF_IN, "smsc911x irq")) {
+		pr_err("Failed to request IRQ GPIO%d\n", gpmc_cfg->gpio_irq);
+		goto free1;
+	}
+
+	gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
+
+	if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
+		ret = gpio_request_one(gpmc_cfg->gpio_reset,
+				       GPIOF_OUT_INIT_HIGH, "smsc911x reset");
+		if (ret) {
+			pr_err("Failed to request reset GPIO%d\n",
+			       gpmc_cfg->gpio_reset);
+			goto free2;
+		}
+
+		gpio_set_value(gpmc_cfg->gpio_reset, 0);
+		msleep(100);
+		gpio_set_value(gpmc_cfg->gpio_reset, 1);
+	}
+
+	gpmc_smsc911x_config.flags = gpmc_cfg->flags ? : SMSC911X_USE_16BIT;
+
+	pdev = platform_device_register_resndata(NULL, "smsc911x", gpmc_cfg->id,
+		 gpmc_smsc911x_resources, ARRAY_SIZE(gpmc_smsc911x_resources),
+		 &gpmc_smsc911x_config, sizeof(gpmc_smsc911x_config));
+	if (IS_ERR(pdev)) {
+		pr_err("Unable to register platform device\n");
+		gpio_free(gpmc_cfg->gpio_reset);
+		goto free2;
+	}
+
+	return;
+
+free2:
+	gpio_free(gpmc_cfg->gpio_irq);
+free1:
+	gpmc_cs_free(gpmc_cfg->cs);
+
+	pr_err("Could not initialize smsc911x device\n");
+}