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path: root/drivers/video/cfbimgblt.c
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Diffstat (limited to 'drivers/video/cfbimgblt.c')
-rw-r--r--drivers/video/cfbimgblt.c26
1 files changed, 4 insertions, 22 deletions
diff --git a/drivers/video/cfbimgblt.c b/drivers/video/cfbimgblt.c
index 4c123abaa843..a7770c4f17d0 100644
--- a/drivers/video/cfbimgblt.c
+++ b/drivers/video/cfbimgblt.c
@@ -80,10 +80,12 @@ static u32 cfb_tab32[] = {
#define LEFT_POS(bpp) (32 - bpp)
#define SHIFT_HIGH(val, bits) ((val) >> (bits))
#define SHIFT_LOW(val, bits) ((val) << (bits))
+#define BIT_NR(b) (7 - (b))
#else
#define LEFT_POS(bpp) (0)
#define SHIFT_HIGH(val, bits) ((val) << (bits))
#define SHIFT_LOW(val, bits) ((val) >> (bits))
+#define BIT_NR(b) (b)
#endif
static inline void color_imageblit(const struct fb_image *image,
@@ -177,7 +179,7 @@ static inline void slow_imageblit(const struct fb_image *image, struct fb_info *
while (j--) {
l--;
- color = (*s & (1 << l)) ? fgcolor : bgcolor;
+ color = (*s & 1 << (BIT_NR(l))) ? fgcolor : bgcolor;
color <<= LEFT_POS(bpp);
val |= SHIFT_HIGH(color, shift);
@@ -272,33 +274,13 @@ void cfb_imageblit(struct fb_info *p, const struct fb_image *image)
{
u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
u32 bpl = sizeof(u32), bpp = p->var.bits_per_pixel;
- u32 width = image->width, height = image->height;
+ u32 width = image->width;
u32 dx = image->dx, dy = image->dy;
- int x2, y2, vxres, vyres;
u8 __iomem *dst1;
if (p->state != FBINFO_STATE_RUNNING)
return;
- vxres = p->var.xres_virtual;
- vyres = p->var.yres_virtual;
- /*
- * We could use hardware clipping but on many cards you get around
- * hardware clipping by writing to framebuffer directly like we are
- * doing here.
- */
- if (image->dx > vxres || image->dy > vyres)
- return;
-
- x2 = image->dx + image->width;
- y2 = image->dy + image->height;
- dx = image->dx > 0 ? image->dx : 0;
- dy = image->dy > 0 ? image->dy : 0;
- x2 = x2 < vxres ? x2 : vxres;
- y2 = y2 < vyres ? y2 : vyres;
- width = x2 - dx;
- height = y2 - dy;
-
bitstart = (dy * p->fix.line_length * 8) + (dx * bpp);
start_index = bitstart & (32 - 1);
pitch_index = (p->fix.line_length & (bpl - 1)) * 8;