viafb: fold via_io.h into via-core.h
Preparatory move toward the ultimate goal of moving pan-subdevice stuff
into include/linux.
Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/drivers/video/via/via-core.h b/drivers/video/via/via-core.h
index 087c562..7ffb521 100644
--- a/drivers/video/via/via-core.h
+++ b/drivers/video/via/via-core.h
@@ -1,7 +1,8 @@
/*
* Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
- * Copyright 2009 Jonathan Corbet <corbet@lwn.net>
+ * Copyright 2009-2010 Jonathan Corbet <corbet@lwn.net>
+ * Copyright 2010 Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
@@ -22,6 +23,8 @@
#ifndef __VIA_CORE_H__
#define __VIA_CORE_H__
+#include <linux/types.h>
+#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
@@ -170,4 +173,47 @@
#define VGA_WIDTH 640
#define VGA_HEIGHT 480
+/*
+ * Indexed port operations. Note that these are all multi-op
+ * functions; every invocation will be racy if you're not holding
+ * reg_lock.
+ */
+
+#define VIAStatus 0x3DA /* Non-indexed port */
+#define VIACR 0x3D4
+#define VIASR 0x3C4
+#define VIAGR 0x3CE
+#define VIAAR 0x3C0
+
+static inline u8 via_read_reg(u16 port, u8 index)
+{
+ outb(index, port);
+ return inb(port + 1);
+}
+
+static inline void via_write_reg(u16 port, u8 index, u8 data)
+{
+ outb(index, port);
+ outb(data, port + 1);
+}
+
+static inline void via_write_reg_mask(u16 port, u8 index, u8 data, u8 mask)
+{
+ u8 old;
+
+ outb(index, port);
+ old = inb(port + 1);
+ outb((data & mask) | (old & ~mask), port + 1);
+}
+
+#define VIA_MISC_REG_READ 0x03CC
+#define VIA_MISC_REG_WRITE 0x03C2
+
+static inline void via_write_misc_reg_mask(u8 data, u8 mask)
+{
+ u8 old = inb(VIA_MISC_REG_READ);
+ outb((data & mask) | (old & ~mask), VIA_MISC_REG_WRITE);
+}
+
+
#endif /* __VIA_CORE_H__ */
