From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001
From: Yunhong Jiang <yunhong.jiang@intel.com>
Date: Tue, 4 Aug 2015 12:17:53 -0700
Subject: 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>
---
 kernel/include/linux/scx200_gpio.h | 88 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 kernel/include/linux/scx200_gpio.h

(limited to 'kernel/include/linux/scx200_gpio.h')

diff --git a/kernel/include/linux/scx200_gpio.h b/kernel/include/linux/scx200_gpio.h
new file mode 100644
index 000000000..ece4e553e
--- /dev/null
+++ b/kernel/include/linux/scx200_gpio.h
@@ -0,0 +1,88 @@
+u32 scx200_gpio_configure(unsigned index, u32 set, u32 clear);
+
+extern unsigned scx200_gpio_base;
+extern unsigned long scx200_gpio_shadow[2];
+extern struct nsc_gpio_ops scx200_gpio_ops;
+
+#define scx200_gpio_present() (scx200_gpio_base!=0)
+
+/* Definitions to make sure I do the same thing in all functions */
+#define __SCx200_GPIO_BANK unsigned bank = index>>5
+#define __SCx200_GPIO_IOADDR unsigned short ioaddr = scx200_gpio_base+0x10*bank
+#define __SCx200_GPIO_SHADOW unsigned long *shadow = scx200_gpio_shadow+bank
+#define __SCx200_GPIO_INDEX index &= 31
+
+#define __SCx200_GPIO_OUT __asm__ __volatile__("outsl":"=mS" (shadow):"d" (ioaddr), "0" (shadow))
+
+/* returns the value of the GPIO pin */
+
+static inline int scx200_gpio_get(unsigned index) {
+	__SCx200_GPIO_BANK;
+	__SCx200_GPIO_IOADDR + 0x04;
+	__SCx200_GPIO_INDEX;
+		
+	return (inl(ioaddr) & (1<<index)) ? 1 : 0;
+}
+
+/* return the value driven on the GPIO signal (the value that will be
+   driven if the GPIO is configured as an output, it might not be the
+   state of the GPIO right now if the GPIO is configured as an input) */
+
+static inline int scx200_gpio_current(unsigned index) {
+        __SCx200_GPIO_BANK;
+	__SCx200_GPIO_INDEX;
+		
+	return (scx200_gpio_shadow[bank] & (1<<index)) ? 1 : 0;
+}
+
+/* drive the GPIO signal high */
+
+static inline void scx200_gpio_set_high(unsigned index) {
+	__SCx200_GPIO_BANK;
+	__SCx200_GPIO_IOADDR;
+	__SCx200_GPIO_SHADOW;
+	__SCx200_GPIO_INDEX;
+	set_bit(index, shadow);	/* __set_bit()? */
+	__SCx200_GPIO_OUT;
+}
+
+/* drive the GPIO signal low */
+
+static inline void scx200_gpio_set_low(unsigned index) {
+	__SCx200_GPIO_BANK;
+	__SCx200_GPIO_IOADDR;
+	__SCx200_GPIO_SHADOW;
+	__SCx200_GPIO_INDEX;
+	clear_bit(index, shadow); /* __clear_bit()? */
+	__SCx200_GPIO_OUT;
+}
+
+/* drive the GPIO signal to state */
+
+static inline void scx200_gpio_set(unsigned index, int state) {
+	__SCx200_GPIO_BANK;
+	__SCx200_GPIO_IOADDR;
+	__SCx200_GPIO_SHADOW;
+	__SCx200_GPIO_INDEX;
+	if (state)
+		set_bit(index, shadow);
+	else
+		clear_bit(index, shadow);
+	__SCx200_GPIO_OUT;
+}
+
+/* toggle the GPIO signal */
+static inline void scx200_gpio_change(unsigned index) {
+	__SCx200_GPIO_BANK;
+	__SCx200_GPIO_IOADDR;
+	__SCx200_GPIO_SHADOW;
+	__SCx200_GPIO_INDEX;
+	change_bit(index, shadow);
+	__SCx200_GPIO_OUT;
+}
+
+#undef __SCx200_GPIO_BANK
+#undef __SCx200_GPIO_IOADDR
+#undef __SCx200_GPIO_SHADOW
+#undef __SCx200_GPIO_INDEX
+#undef __SCx200_GPIO_OUT
-- 
cgit 1.2.3-korg