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, 169 insertions, 0 deletions

diff --git a/kernel/drivers/pcmcia/pxa2xx_colibri.c b/kernel/drivers/pcmcia/pxa2xx_colibri.c
new file mode 100644
index 000000000..4dee7b2a8
--- /dev/null
+++ b/kernel/drivers/pcmcia/pxa2xx_colibri.c
@@ -0,0 +1,169 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_colibri.c
+ *
+ * Driver for Toradex Colibri PXA270 CF socket
+ *
+ * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * 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/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+
+#include "soc_common.h"
+
+#define	COLIBRI270_RESET_GPIO	53
+#define	COLIBRI270_PPEN_GPIO	107
+#define	COLIBRI270_BVD1_GPIO	83
+#define	COLIBRI270_BVD2_GPIO	82
+#define	COLIBRI270_DETECT_GPIO	84
+#define	COLIBRI270_READY_GPIO	1
+
+#define	COLIBRI320_RESET_GPIO	77
+#define	COLIBRI320_PPEN_GPIO	57
+#define	COLIBRI320_BVD1_GPIO	53
+#define	COLIBRI320_BVD2_GPIO	79
+#define	COLIBRI320_DETECT_GPIO	81
+#define	COLIBRI320_READY_GPIO	29
+
+enum {
+	DETECT = 0,
+	READY = 1,
+	BVD1 = 2,
+	BVD2 = 3,
+	PPEN = 4,
+	RESET = 5,
+};
+
+/* Contents of this array are configured on-the-fly in init function */
+static struct gpio colibri_pcmcia_gpios[] = {
+	{ 0,	GPIOF_IN,	"PCMCIA Detect" },
+	{ 0,	GPIOF_IN,	"PCMCIA Ready" },
+	{ 0,	GPIOF_IN,	"PCMCIA BVD1" },
+	{ 0,	GPIOF_IN,	"PCMCIA BVD2" },
+	{ 0,	GPIOF_INIT_LOW,	"PCMCIA PPEN" },
+	{ 0,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
+};
+
+static int colibri_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	int ret;
+
+	ret = gpio_request_array(colibri_pcmcia_gpios,
+				ARRAY_SIZE(colibri_pcmcia_gpios));
+	if (ret)
+		goto err1;
+
+	skt->socket.pci_irq = gpio_to_irq(colibri_pcmcia_gpios[READY].gpio);
+	skt->stat[SOC_STAT_CD].irq = gpio_to_irq(colibri_pcmcia_gpios[DETECT].gpio);
+	skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
+
+err1:
+	return ret;
+}
+
+static void colibri_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+	gpio_free_array(colibri_pcmcia_gpios,
+			ARRAY_SIZE(colibri_pcmcia_gpios));
+}
+
+static void colibri_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+					struct pcmcia_state *state)
+{
+
+	state->detect = !!gpio_get_value(colibri_pcmcia_gpios[DETECT].gpio);
+	state->ready  = !!gpio_get_value(colibri_pcmcia_gpios[READY].gpio);
+	state->bvd1   = !!gpio_get_value(colibri_pcmcia_gpios[BVD1].gpio);
+	state->bvd2   = !!gpio_get_value(colibri_pcmcia_gpios[BVD2].gpio);
+	state->vs_3v  = 1;
+	state->vs_Xv  = 0;
+}
+
+static int
+colibri_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+				const socket_state_t *state)
+{
+	gpio_set_value(colibri_pcmcia_gpios[PPEN].gpio,
+			!(state->Vcc == 33 && state->Vpp < 50));
+	gpio_set_value(colibri_pcmcia_gpios[RESET].gpio,
+			state->flags & SS_RESET);
+	return 0;
+}
+
+static struct pcmcia_low_level colibri_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+
+	.first			= 0,
+	.nr			= 1,
+
+	.hw_init		= colibri_pcmcia_hw_init,
+	.hw_shutdown		= colibri_pcmcia_hw_shutdown,
+
+	.socket_state		= colibri_pcmcia_socket_state,
+	.configure_socket	= colibri_pcmcia_configure_socket,
+};
+
+static struct platform_device *colibri_pcmcia_device;
+
+static int __init colibri_pcmcia_init(void)
+{
+	int ret;
+
+	if (!machine_is_colibri() && !machine_is_colibri320())
+		return -ENODEV;
+
+	colibri_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+	if (!colibri_pcmcia_device)
+		return -ENOMEM;
+
+	/* Colibri PXA270 */
+	if (machine_is_colibri()) {
+		colibri_pcmcia_gpios[RESET].gpio	= COLIBRI270_RESET_GPIO;
+		colibri_pcmcia_gpios[PPEN].gpio		= COLIBRI270_PPEN_GPIO;
+		colibri_pcmcia_gpios[BVD1].gpio		= COLIBRI270_BVD1_GPIO;
+		colibri_pcmcia_gpios[BVD2].gpio		= COLIBRI270_BVD2_GPIO;
+		colibri_pcmcia_gpios[DETECT].gpio	= COLIBRI270_DETECT_GPIO;
+		colibri_pcmcia_gpios[READY].gpio	= COLIBRI270_READY_GPIO;
+	/* Colibri PXA320 */
+	} else if (machine_is_colibri320()) {
+		colibri_pcmcia_gpios[RESET].gpio	= COLIBRI320_RESET_GPIO;
+		colibri_pcmcia_gpios[PPEN].gpio		= COLIBRI320_PPEN_GPIO;
+		colibri_pcmcia_gpios[BVD1].gpio		= COLIBRI320_BVD1_GPIO;
+		colibri_pcmcia_gpios[BVD2].gpio		= COLIBRI320_BVD2_GPIO;
+		colibri_pcmcia_gpios[DETECT].gpio	= COLIBRI320_DETECT_GPIO;
+		colibri_pcmcia_gpios[READY].gpio	= COLIBRI320_READY_GPIO;
+	}
+
+	ret = platform_device_add_data(colibri_pcmcia_device,
+		&colibri_pcmcia_ops, sizeof(colibri_pcmcia_ops));
+
+	if (!ret)
+		ret = platform_device_add(colibri_pcmcia_device);
+
+	if (ret)
+		platform_device_put(colibri_pcmcia_device);
+
+	return ret;
+}
+
+static void __exit colibri_pcmcia_exit(void)
+{
+	platform_device_unregister(colibri_pcmcia_device);
+}
+
+module_init(colibri_pcmcia_init);
+module_exit(colibri_pcmcia_exit);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270/PXA320");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_LICENSE("GPL");