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, 137 insertions, 0 deletions

diff --git a/kernel/drivers/ata/pata_palmld.c b/kernel/drivers/ata/pata_palmld.c
new file mode 100644
index 000000000..8c0d7d736
--- /dev/null
+++ b/kernel/drivers/ata/pata_palmld.c
@@ -0,0 +1,137 @@
+/*
+ * drivers/ata/pata_palmld.c
+ *
+ * Driver for IDE channel in Palm LifeDrive
+ *
+ * Based on research of:
+ *		Alex Osborne <ato@meshy.org>
+ *
+ * Rewrite for mainline:
+ *		Marek Vasut <marek.vasut@gmail.com>
+ *
+ * Rewritten version based on pata_ixp4xx_cf.c:
+ * ixp4xx PATA/Compact Flash driver
+ * Copyright (C) 2006-07 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/libata.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <scsi/scsi_host.h>
+#include <mach/palmld.h>
+
+#define DRV_NAME "pata_palmld"
+
+static struct gpio palmld_hdd_gpios[] = {
+	{ GPIO_NR_PALMLD_IDE_PWEN,	GPIOF_INIT_HIGH,	"HDD Power" },
+	{ GPIO_NR_PALMLD_IDE_RESET,	GPIOF_INIT_LOW,		"HDD Reset" },
+};
+
+static struct scsi_host_template palmld_sht = {
+	ATA_PIO_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations palmld_port_ops = {
+	.inherits		= &ata_sff_port_ops,
+	.sff_data_xfer		= ata_sff_data_xfer_noirq,
+	.cable_detect		= ata_cable_40wire,
+};
+
+static int palmld_pata_probe(struct platform_device *pdev)
+{
+	struct ata_host *host;
+	struct ata_port *ap;
+	void __iomem *mem;
+	int ret;
+
+	/* allocate host */
+	host = ata_host_alloc(&pdev->dev, 1);
+	if (!host) {
+		ret = -ENOMEM;
+		goto err1;
+	}
+
+	/* remap drive's physical memory address */
+	mem = devm_ioremap(&pdev->dev, PALMLD_IDE_PHYS, 0x1000);
+	if (!mem) {
+		ret = -ENOMEM;
+		goto err1;
+	}
+
+	/* request and activate power GPIO, IRQ GPIO */
+	ret = gpio_request_array(palmld_hdd_gpios,
+				ARRAY_SIZE(palmld_hdd_gpios));
+	if (ret)
+		goto err1;
+
+	/* reset the drive */
+	gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 0);
+	msleep(30);
+	gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 1);
+	msleep(30);
+
+	/* setup the ata port */
+	ap = host->ports[0];
+	ap->ops	= &palmld_port_ops;
+	ap->pio_mask = ATA_PIO4;
+	ap->flags |= ATA_FLAG_PIO_POLLING;
+
+	/* memory mapping voodoo */
+	ap->ioaddr.cmd_addr = mem + 0x10;
+	ap->ioaddr.altstatus_addr = mem + 0xe;
+	ap->ioaddr.ctl_addr = mem + 0xe;
+
+	/* start the port */
+	ata_sff_std_ports(&ap->ioaddr);
+
+	/* activate host */
+	ret = ata_host_activate(host, 0, NULL, IRQF_TRIGGER_RISING,
+					&palmld_sht);
+	if (ret)
+		goto err2;
+
+	return ret;
+
+err2:
+	gpio_free_array(palmld_hdd_gpios, ARRAY_SIZE(palmld_hdd_gpios));
+err1:
+	return ret;
+}
+
+static int palmld_pata_remove(struct platform_device *dev)
+{
+	ata_platform_remove_one(dev);
+
+	/* power down the HDD */
+	gpio_set_value(GPIO_NR_PALMLD_IDE_PWEN, 0);
+
+	gpio_free_array(palmld_hdd_gpios, ARRAY_SIZE(palmld_hdd_gpios));
+
+	return 0;
+}
+
+static struct platform_driver palmld_pata_platform_driver = {
+	.driver	 = {
+		.name   = DRV_NAME,
+	},
+	.probe		= palmld_pata_probe,
+	.remove		= palmld_pata_remove,
+};
+
+module_platform_driver(palmld_pata_platform_driver);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("PalmLD PATA driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);