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authorDennis Munsie <dmunsie@cecropia.com>2006-10-03 04:14:42 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-03 11:04:09 -0400
commitfc5891c8a3ba284f13994d7bc1f1bfa8283982de (patch)
treea9361f04236b60e0c1a8b1158e490b505c0961f4 /include/linux/fb.h
parent66cf75121b1c8128ef9ab2d772c5654ae00c4284 (diff)
[PATCH] fbdev: Add generic ddc read functionality
Adds functionality to read the EDID information over the DDC bus in a generic way. This code is based on the DDC implementation in the radeon driver. [adaplas] - separate from fbmon.c and place in new file fb_ddc.c - remove dependency to CONFIG_I2C and CONFIG_I2C_ALGOBIT, otherwise, feature will not compile if i2c support is compiled as a module - feature is selectable only by drivers needing it. It must have a 'select FB_DDC if xxx' in Kconfig - change printk's to dev_*, the i2c people prefers it Signed-off-by: Dennis Munsie <dmunsie@cecropia.com> Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/fb.h')
-rw-r--r--include/linux/fb.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 2f335e966011..37aab314f0c4 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -2,6 +2,7 @@
2#define _LINUX_FB_H 2#define _LINUX_FB_H
3 3
4#include <asm/types.h> 4#include <asm/types.h>
5#include <linux/i2c.h>
5 6
6/* Definitions of frame buffers */ 7/* Definitions of frame buffers */
7 8
@@ -940,6 +941,7 @@ extern void fb_edid_to_monspecs(unsigned char *edid,
940 struct fb_monspecs *specs); 941 struct fb_monspecs *specs);
941extern void fb_destroy_modedb(struct fb_videomode *modedb); 942extern void fb_destroy_modedb(struct fb_videomode *modedb);
942extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); 943extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
944extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
943 945
944/* drivers/video/modedb.c */ 946/* drivers/video/modedb.c */
945#define VESA_MODEDB_SIZE 34 947#define VESA_MODEDB_SIZE 34