[PATCH] s3c2410fb: ARM S3C2410 framebuffer driver

This set of two patches add support for the framebuffer of the Samsung S3C2410
ARM SoC.  This driver was started about one year ago and is now used on iPAQ
h1930/h1940, Acer n30 and probably other s3c2410-based machines I'm not aware
of.  I've also heard yesterday that it's working also on iPAQ rx3715/rx3115
(s3c2440-based machines).

Signed-Off-By: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Ben Dooks <ben@trinity.fluff.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 86 insertions, 0 deletions

diff --git a/include/asm-arm/arch-s3c2410/fb.h b/include/asm-arm/arch-s3c2410/fb.h
new file mode 100644
index 000000000000..ac57bc887d82
--- /dev/null
+++ b/include/asm-arm/arch-s3c2410/fb.h
@@ -0,0 +1,69 @@
+/* linux/include/asm/arch-s3c2410/fb.h
+ *
+ * Copyright (c) 2004 Arnaud Patard <arnaud.patard@rtp-net.org>
+ *
+ * Inspired by pxafb.h
+ *
+ * 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.
+ *
+ *
+ *  Changelog:
+ *      07-Sep-2004     RTP     Created file
+ *      03-Nov-2004     BJD     Updated and minor cleanups
+ *      03-Aug-2005     RTP     Renamed to fb.h
+*/
+
+#ifndef __ASM_ARM_FB_H
+#define __ASM_ARM_FB_H
+
+#include <asm/arch/regs-lcd.h>
+
+struct s3c2410fb_val {
+        unsigned int    defval;
+        unsigned int    min;
+        unsigned int    max;
+};
+
+struct s3c2410fb_hw {
+        unsigned long   lcdcon1;
+        unsigned long   lcdcon2;
+        unsigned long   lcdcon3;
+        unsigned long   lcdcon4;
+        unsigned long   lcdcon5;
+};
+
+struct s3c2410fb_mach_info {
+        unsigned char   fixed_syncs;    /* do not update sync/border */
+
+        /* Screen size */
+        int             width;
+        int             height;
+
+        /* Screen info */
+        struct s3c2410fb_val xres;
+        struct s3c2410fb_val yres;
+        struct s3c2410fb_val bpp;
+
+        /* lcd configuration registers */
+        struct s3c2410fb_hw  regs;
+
+        /* GPIOs */
+
+        unsigned long   gpcup;
+        unsigned long   gpcup_mask;
+        unsigned long   gpccon;
+        unsigned long   gpccon_mask;
+        unsigned long   gpdup;
+        unsigned long   gpdup_mask;
+        unsigned long   gpdcon;
+        unsigned long   gpdcon_mask;
+
+        /* lpc3600 control register */
+        unsigned long   lpcsel;
+};
+
+void __init set_s3c2410fb_info(struct s3c2410fb_mach_info *hard_s3c2410fb_info);
+
+#endif /* __ASM_ARM_FB_H */
diff --git a/include/asm-arm/arch-s3c2410/regs-lcd.h b/include/asm-arm/arch-s3c2410/regs-lcd.h
index 7f882ea92b2a..b6b1b4e8bbeb 100644
--- a/include/asm-arm/arch-s3c2410/regs-lcd.h
+++ b/include/asm-arm/arch-s3c2410/regs-lcd.h
@@ -51,21 +51,32 @@
 
 #define S3C2410_LCDCON1_ENVID      (1)
 
+#define S3C2410_LCDCON1_MODEMASK    0x1E
+
 #define S3C2410_LCDCON2_VBPD(x)     ((x) << 24)
 #define S3C2410_LCDCON2_LINEVAL(x)  ((x) << 14)
 #define S3C2410_LCDCON2_VFPD(x)     ((x) << 6)
 #define S3C2410_LCDCON2_VSPW(x)     ((x) << 0)
 
+#define S3C2410_LCDCON2_GET_VBPD(x) ( ((x) >> 24) & 0xFF)
+#define S3C2410_LCDCON2_GET_VFPD(x) ( ((x) >>  6) & 0xFF)
+#define S3C2410_LCDCON2_GET_VSPW(x) ( ((x) >>  0) & 0x3F)
+
 #define S3C2410_LCDCON3_HBPD(x)     ((x) << 19)
 #define S3C2410_LCDCON3_WDLY(x)     ((x) << 19)
 #define S3C2410_LCDCON3_HOZVAL(x)   ((x) << 8)
 #define S3C2410_LCDCON3_HFPD(x)     ((x) << 0)
 #define S3C2410_LCDCON3_LINEBLANK(x)((x) << 0)
 
+#define S3C2410_LCDCON3_GET_HBPD(x) ( ((x) >> 19) & 0x7F)
+#define S3C2410_LCDCON3_GET_HFPD(x) ( ((x) >>  0) & 0xFF)
+
 #define S3C2410_LCDCON4_MVAL(x)     ((x) << 8)
 #define S3C2410_LCDCON4_HSPW(x)     ((x) << 0)
 #define S3C2410_LCDCON4_WLH(x)      ((x) << 0)
 
+#define S3C2410_LCDCON4_GET_HSPW(x) ( ((x) >>  0) & 0xFF)
+
 #define S3C2410_LCDCON5_BPP24BL     (1<<12)
 #define S3C2410_LCDCON5_FRM565      (1<<11)
 #define S3C2410_LCDCON5_INVVCLK     (1<<10)
@@ -100,10 +111,16 @@
 #define S3C2410_DITHMODE   S3C2410_LCDREG(0x4C)
 #define S3C2410_TPAL       S3C2410_LCDREG(0x50)
 
+#define S3C2410_TPAL_EN         (1<<24)
+
 /* interrupt info */
 #define S3C2410_LCDINTPND  S3C2410_LCDREG(0x54)
 #define S3C2410_LCDSRCPND  S3C2410_LCDREG(0x58)
 #define S3C2410_LCDINTMSK  S3C2410_LCDREG(0x5C)
+#define S3C2410_LCDINT_FIWSEL   (1<<2)
+#define S3C2410_LCDINT_FRSYNC   (1<<1)
+#define S3C2410_LCDINT_FICNT    (1<<0)
+
 #define S3C2410_LPCSEL     S3C2410_LCDREG(0x60)
 
 #define S3C2410_TFTPAL(x)  S3C2410_LCDREG((0x400 + (x)*4))