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, 236 insertions, 0 deletions

diff --git a/kernel/drivers/pcmcia/sa1111_lubbock.c b/kernel/drivers/pcmcia/sa1111_lubbock.c
new file mode 100644
index 000000000..c5caf5790
--- /dev/null
+++ b/kernel/drivers/pcmcia/sa1111_lubbock.c
@@ -0,0 +1,236 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_lubbock.c
+ *
+ * Author:	George Davis
+ * Created:	Jan 10, 2002
+ * Copyright:	MontaVista Software Inc.
+ *
+ * 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.
+ *
+ * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c
+ *
+ * Lubbock PCMCIA specific routines.
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <mach/hardware.h>
+#include <asm/hardware/sa1111.h>
+#include <asm/mach-types.h>
+#include <mach/lubbock.h>
+
+#include "sa1111_generic.h"
+
+static int
+lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+				const socket_state_t *state)
+{
+	struct sa1111_pcmcia_socket *s = to_skt(skt);
+	unsigned int pa_dwr_mask, pa_dwr_set, misc_mask, misc_set;
+	int ret = 0;
+
+	pa_dwr_mask = pa_dwr_set = misc_mask = misc_set = 0;
+
+	/* Lubbock uses the Maxim MAX1602, with the following connections:
+	 *
+	 * Socket 0 (PCMCIA):
+	 *	MAX1602	Lubbock		Register
+	 *	Pin	Signal
+	 *	-----	-------		----------------------
+	 *	A0VPP	S0_PWR0		SA-1111 GPIO A<0>
+	 *	A1VPP	S0_PWR1		SA-1111 GPIO A<1>
+	 *	A0VCC	S0_PWR2		SA-1111 GPIO A<2>
+	 *	A1VCC	S0_PWR3		SA-1111 GPIO A<3>
+	 *	VX	VCC
+	 *	VY	+3.3V
+	 *	12IN	+12V
+	 *	CODE	+3.3V		Cirrus  Code, CODE = High (VY)
+	 *
+	 * Socket 1 (CF):
+	 *	MAX1602	Lubbock		Register
+	 *	Pin	Signal
+	 *	-----	-------		----------------------
+	 *	A0VPP	GND		VPP is not connected
+	 *	A1VPP	GND		VPP is not connected
+	 *	A0VCC	S1_PWR0		MISC_WR<14>
+	 *	A1VCC	S1_PWR1		MISC_WR<15>
+	 *	VX	VCC
+	 *	VY	+3.3V
+	 *	12IN	GND		VPP is not connected
+	 *	CODE	+3.3V		Cirrus  Code, CODE = High (VY)
+	 *
+	 */
+
+ again:
+	switch (skt->nr) {
+	case 0:
+		pa_dwr_mask = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
+
+		switch (state->Vcc) {
+		case 0: /* Hi-Z */
+			break;
+
+		case 33: /* VY */
+			pa_dwr_set |= GPIO_A3;
+			break;
+
+		case 50: /* VX */
+			pa_dwr_set |= GPIO_A2;
+			break;
+
+		default:
+			printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+			       __func__, state->Vcc);
+			ret = -1;
+		}
+
+		switch (state->Vpp) {
+		case 0: /* Hi-Z */
+			break;
+
+		case 120: /* 12IN */
+			pa_dwr_set |= GPIO_A1;
+			break;
+
+		default: /* VCC */
+			if (state->Vpp == state->Vcc)
+				pa_dwr_set |= GPIO_A0;
+			else {
+				printk(KERN_ERR "%s(): unrecognized Vpp %u\n",
+				       __func__, state->Vpp);
+				ret = -1;
+				break;
+			}
+		}
+		break;
+
+	case 1:
+		misc_mask = (1 << 15) | (1 << 14);
+
+		switch (state->Vcc) {
+		case 0: /* Hi-Z */
+			break;
+
+		case 33: /* VY */
+			misc_set |= 1 << 15;
+			break;
+
+		case 50: /* VX */
+			misc_set |= 1 << 14;
+			break;
+
+		default:
+			printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+			       __func__, state->Vcc);
+			ret = -1;
+			break;
+		}
+
+		if (state->Vpp != state->Vcc && state->Vpp != 0) {
+			printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n",
+			       __func__, state->Vpp);
+			ret = -1;
+			break;
+		}
+		break;
+
+	default:
+		ret = -1;
+	}
+
+	if (ret == 0)
+		ret = sa1111_pcmcia_configure_socket(skt, state);
+
+	if (ret == 0) {
+		lubbock_set_misc_wr(misc_mask, misc_set);
+		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
+	}
+
+#if 1
+	if (ret == 0 && state->Vcc == 33) {
+		struct pcmcia_state new_state;
+
+		/*
+		 * HACK ALERT:
+		 * We can't sense the voltage properly on Lubbock before
+		 * actually applying some power to the socket (catch 22).
+		 * Resense the socket Voltage Sense pins after applying
+		 * socket power.
+		 *
+		 * Note: It takes about 2.5ms for the MAX1602 VCC output
+		 * to rise.
+		 */
+		mdelay(3);
+
+		sa1111_pcmcia_socket_state(skt, &new_state);
+
+		if (!new_state.vs_3v && !new_state.vs_Xv) {
+			/*
+			 * Switch to 5V,  Configure socket with 5V voltage
+			 */
+			lubbock_set_misc_wr(misc_mask, 0);
+			sa1111_set_io(s->dev, pa_dwr_mask, 0);
+
+			/*
+			 * It takes about 100ms to turn off Vcc.
+			 */
+			mdelay(100);
+
+			/*
+			 * We need to hack around the const qualifier as
+			 * well to keep this ugly workaround localized and
+			 * not force it to the rest of the code. Barf bags
+			 * available in the seat pocket in front of you!
+			 */
+			((socket_state_t *)state)->Vcc = 50;
+			((socket_state_t *)state)->Vpp = 50;
+			goto again;
+		}
+	}
+#endif
+
+	return ret;
+}
+
+static struct pcmcia_low_level lubbock_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+	.configure_socket	= lubbock_pcmcia_configure_socket,
+	.first			= 0,
+	.nr			= 2,
+};
+
+#include "pxa2xx_base.h"
+
+int pcmcia_lubbock_init(struct sa1111_dev *sadev)
+{
+	int ret = -ENODEV;
+
+	if (machine_is_lubbock()) {
+		/*
+		 * Set GPIO_A<3:0> to be outputs for the MAX1600,
+		 * and switch to standby mode.
+		 */
+		sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
+		sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
+		sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
+
+		/* Set CF Socket 1 power to standby mode. */
+		lubbock_set_misc_wr((1 << 15) | (1 << 14), 0);
+
+		pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops);
+		pxa2xx_configure_sockets(&sadev->dev);
+		ret = sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops,
+				pxa2xx_drv_pcmcia_add_one);
+	}
+
+	return ret;
+}
+
+MODULE_LICENSE("GPL");