diff options
| author | Petr Vandrovec <vandrove@vc.cvut.cz> | 2005-03-30 16:48:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-03-30 16:48:52 -0800 |
| commit | 2fc97ba68cb8685e2e9b4ae2899b18fd30b33dbc (patch) | |
| tree | c7f96dbe7eec975518c74b3f06a6340ca3c57cfc | |
| parent | a49b4cffbe27108ddd30dbf865fdd4b556772e0c (diff) | |
| download | history-2fc97ba68cb8685e2e9b4ae2899b18fd30b33dbc.tar.gz | |
[PATCH] Fix matroxfb on big-endian hardware
There was too much/too few byteswapping done by driver and hardware in
matroxfb on big endian hardware. Change fixes mirrored/split/corrupted
letters seen on screen when using accelerated matroxfb mode.
Patch was tested on Mips (by Peter) and x86-64 (by Petr).
Signed-off-by: Peter 'p2' De Schrijver <p2@mind.be>
Signed-off-by: Petr Vandrovec <vandrove@vc.cvut.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/video/matrox/matroxfb_accel.c | 14 | ||||
| -rw-r--r-- | drivers/video/matrox/matroxfb_base.h | 4 |
2 files changed, 13 insertions, 5 deletions
diff --git a/drivers/video/matrox/matroxfb_accel.c b/drivers/video/matrox/matroxfb_accel.c index 8f14c9b300c286..c7f3e1321224d3 100644 --- a/drivers/video/matrox/matroxfb_accel.c +++ b/drivers/video/matrox/matroxfb_accel.c @@ -438,13 +438,21 @@ static void matroxfb_1bpp_imageblit(WPMINFO u_int32_t fgx, u_int32_t bgx, } else if (step == 1) { /* Special case for 1..8bit widths */ while (height--) { - mga_writel(mmio, 0, *chardata); +#if defined(__BIG_ENDIAN) + fb_writel((*chardata) << 24, mmio.vaddr); +#else + fb_writel(*chardata, mmio.vaddr); +#endif chardata++; } } else if (step == 2) { /* Special case for 9..15bit widths */ while (height--) { - mga_writel(mmio, 0, *(u_int16_t*)chardata); +#if defined(__BIG_ENDIAN) + fb_writel((*(u_int16_t*)chardata) << 16, mmio.vaddr); +#else + fb_writel(*(u_int16_t*)chardata, mmio.vaddr); +#endif chardata += 2; } } else { @@ -454,7 +462,7 @@ static void matroxfb_1bpp_imageblit(WPMINFO u_int32_t fgx, u_int32_t bgx, for (i = 0; i < step; i += 4) { /* Hope that there are at least three readable bytes beyond the end of bitmap */ - mga_writel(mmio, 0, get_unaligned((u_int32_t*)(chardata + i))); + fb_writel(get_unaligned((u_int32_t*)(chardata + i)),mmio.vaddr); } chardata += step; } diff --git a/drivers/video/matrox/matroxfb_base.h b/drivers/video/matrox/matroxfb_base.h index 942ec768abd970..85a0b255845279 100644 --- a/drivers/video/matrox/matroxfb_base.h +++ b/drivers/video/matrox/matroxfb_base.h @@ -170,14 +170,14 @@ static inline void mga_memcpy_toio(vaddr_t va, const void* src, int len) { if ((unsigned long)src & 3) { while (len >= 4) { - writel(get_unaligned((u32 *)src), addr); + fb_writel(get_unaligned((u32 *)src), addr); addr++; len -= 4; src += 4; } } else { while (len >= 4) { - writel(*(u32 *)src, addr); + fb_writel(*(u32 *)src, addr); addr++; len -= 4; src += 4; |