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, 103 insertions, 0 deletions

diff --git a/kernel/drivers/pcmcia/sa1100_shannon.c b/kernel/drivers/pcmcia/sa1100_shannon.c
new file mode 100644
index 000000000..b07a2dc32
--- /dev/null
+++ b/kernel/drivers/pcmcia/sa1100_shannon.c
@@ -0,0 +1,103 @@
+/*
+ * drivers/pcmcia/sa1100_shannon.c
+ *
+ * PCMCIA implementation routines for Shannon
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <mach/shannon.h>
+#include <asm/irq.h>
+#include "sa1100_generic.h"
+
+static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	/* All those are inputs */
+	GAFR &= ~(GPIO_GPIO(SHANNON_GPIO_EJECT_0) |
+		  GPIO_GPIO(SHANNON_GPIO_EJECT_1) |
+		  GPIO_GPIO(SHANNON_GPIO_RDY_0) |
+		  GPIO_GPIO(SHANNON_GPIO_RDY_1));
+
+	if (skt->nr == 0) {
+		skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_0;
+		skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_0";
+		skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_0;
+		skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_0";
+	} else {
+		skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_1;
+		skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_1";
+		skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_1;
+		skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_1";
+	}
+
+	return 0;
+}
+
+static void
+shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+			    struct pcmcia_state *state)
+{
+	switch (skt->nr) {
+	case 0:
+		state->bvd1   = 1; 
+		state->bvd2   = 1; 
+		state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
+		state->vs_Xv  = 0;
+		break;
+
+	case 1:
+		state->bvd1   = 1; 
+		state->bvd2   = 1; 
+		state->vs_3v  = 1; /* FIXME Can only apply 3.3V on Shannon. */
+		state->vs_Xv  = 0;
+		break;
+	}
+}
+
+static int
+shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+				const socket_state_t *state)
+{
+	switch (state->Vcc) {
+	case 0:	/* power off */
+		printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__);
+		break;
+	case 50:
+		printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__);
+	case 33:
+		break;
+	default:
+		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+		       __func__, state->Vcc);
+		return -1;
+	}
+
+	printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__);
+	
+	/* Silently ignore Vpp, output enable, speaker enable. */
+
+	return 0;
+}
+
+static struct pcmcia_low_level shannon_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+	.hw_init		= shannon_pcmcia_hw_init,
+	.socket_state		= shannon_pcmcia_socket_state,
+	.configure_socket	= shannon_pcmcia_configure_socket,
+};
+
+int pcmcia_shannon_init(struct device *dev)
+{
+	int ret = -ENODEV;
+
+	if (machine_is_shannon())
+		ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2);
+
+	return ret;
+}