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>

diff --git a/drivers/video/pm2fb.c b/drivers/video/pm2fb.c
index 5591dfb..30181b5 100644 (file)
--- 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 |