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authorKrzysztof Helt <krzysztof.h1@wp.pl>2008-02-06 12:39:37 +0300
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-06 21:41:17 +0300
commitbc9c6a175fa8123587668c38959a105e3ccb6bbd (patch)
tree2dd0225546ed1c66a4a7a648de370b9c7b912be6 /drivers/video
parenta782eed655de49faa4895ae6143c3891985e4d98 (diff)
downloadlinux-bc9c6a175fa8123587668c38959a105e3ccb6bbd.tar.xz
pm2fb: big endian fix
Fix garbled letters on big endian machines with acceleration enabled. This makes pm2fb works fine with full acceleration on sparc machine (card known as Sun PGX-32 or TechSource Raptor GFX-8P). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/pm2fb.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index 5591dfb22b18..30181b593829 100644
--- a/drivers/video/pm2fb.c
+++ b/drivers/video/pm2fb.c
@@ -1159,6 +1159,11 @@ static void pm2fb_imageblit(struct fb_info *info, const struct fb_image *image)
u32 fgx, bgx;
const u32 *src = (const u32 *)image->data;
u32 xres = (info->var.xres + 31) & ~31;
+ int raster_mode = 1; /* invert bits */
+
+#ifdef __LITTLE_ENDIAN
+ raster_mode |= 3 << 7; /* reverse byte order */
+#endif
if (info->state != FBINFO_STATE_RUNNING)
return;
@@ -1208,9 +1213,8 @@ static void pm2fb_imageblit(struct fb_info *info, const struct fb_image *image)
pm2_WR(par, PM2R_RENDER,
PM2F_RENDER_RECTANGLE |
PM2F_INCREASE_X | PM2F_INCREASE_Y);
- /* BitMapPackEachScanline & invert bits and byte order*/
- /* force background */
- pm2_WR(par, PM2R_RASTERIZER_MODE, (1 << 9) | 1 | (3 << 7));
+ /* BitMapPackEachScanline */
+ pm2_WR(par, PM2R_RASTERIZER_MODE, raster_mode | (1 << 9));
pm2_WR(par, PM2R_CONSTANT_COLOR, fgx);
pm2_WR(par, PM2R_RENDER,
PM2F_RENDER_RECTANGLE |
@@ -1224,8 +1228,7 @@ static void pm2fb_imageblit(struct fb_info *info, const struct fb_image *image)
PM2F_RENDER_RECTANGLE |
PM2F_RENDER_FASTFILL |
PM2F_INCREASE_X | PM2F_INCREASE_Y);
- /* invert bits and byte order*/
- pm2_WR(par, PM2R_RASTERIZER_MODE, 1 | (3 << 7));
+ pm2_WR(par, PM2R_RASTERIZER_MODE, raster_mode);
pm2_WR(par, PM2R_FB_BLOCK_COLOR, fgx);
pm2_WR(par, PM2R_RENDER,
PM2F_RENDER_RECTANGLE |