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, 106 insertions, 0 deletions

diff --git a/kernel/drivers/pcmcia/sa1100_assabet.c b/kernel/drivers/pcmcia/sa1100_assabet.c
new file mode 100644
index 000000000..44cfc4416
--- /dev/null
+++ b/kernel/drivers/pcmcia/sa1100_assabet.c
@@ -0,0 +1,106 @@
+/*
+ * drivers/pcmcia/sa1100_assabet.c
+ *
+ * PCMCIA implementation routines for Assabet
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+#include <mach/assabet.h>
+
+#include "sa1100_generic.h"
+
+static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
+	skt->stat[SOC_STAT_CD].name = "CF CD";
+	skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
+	skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
+	skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
+	skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
+	skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
+	skt->stat[SOC_STAT_RDY].name = "CF RDY";
+
+	return 0;
+}
+
+static void
+assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+	state->vs_3v  = 1; /* Can only apply 3.3V on Assabet. */
+	state->vs_Xv  = 0;
+}
+
+static int
+assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
+{
+	unsigned int mask;
+
+	switch (state->Vcc) {
+	case 0:
+		mask = 0;
+		break;
+
+	case 50:
+		printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
+			__func__);
+
+	case 33:  /* Can only apply 3.3V to the CF slot. */
+		mask = ASSABET_BCR_CF_PWR;
+		break;
+
+	default:
+		printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
+			state->Vcc);
+		return -1;
+	}
+
+	/* Silently ignore Vpp, speaker enable. */
+
+	if (state->flags & SS_RESET)
+		mask |= ASSABET_BCR_CF_RST;
+	if (!(state->flags & SS_OUTPUT_ENA))
+		mask |= ASSABET_BCR_CF_BUS_OFF;
+
+	ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR |
+			ASSABET_BCR_CF_BUS_OFF, mask);
+
+	return 0;
+}
+
+/*
+ * Disable card status IRQs on suspend.
+ */
+static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+	/*
+	 * Tristate the CF bus signals.  Also assert CF
+	 * reset as per user guide page 4-11.
+	 */
+	ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
+}
+
+static struct pcmcia_low_level assabet_pcmcia_ops = { 
+	.owner			= THIS_MODULE,
+	.hw_init		= assabet_pcmcia_hw_init,
+	.socket_state		= assabet_pcmcia_socket_state,
+	.configure_socket	= assabet_pcmcia_configure_socket,
+	.socket_suspend		= assabet_pcmcia_socket_suspend,
+};
+
+int pcmcia_assabet_init(struct device *dev)
+{
+	int ret = -ENODEV;
+
+	if (machine_is_assabet() && !machine_has_neponset())
+		ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
+
+	return ret;
+}