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author | 2008-04-28 02:14:49 -0700 | |
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committer | 2008-04-28 08:58:35 -0700 | |
commit | e4c690e061b909127ab0f12e929f82f3f39ec953 (patch) | |
tree | b798bbda541f615cd4830cad96ed3f58db1fd19c /drivers/video/sysimgblt.c | |
parent | fbdev: make the best-fit section of fb_find_mode return the closest matching ... (diff) | |
download | linux-e4c690e061b909127ab0f12e929f82f3f39ec953.tar.gz linux-e4c690e061b909127ab0f12e929f82f3f39ec953.tar.bz2 linux-e4c690e061b909127ab0f12e929f82f3f39ec953.zip |
fb: add support for foreign endianness
Add support for the framebuffers with non-native endianness. This is done via
FBINFO_FOREIGN_ENDIAN flag that will be used by the drivers. Depending on the
host endianness this flag will be overwritten by FBINFO_BE_MATH internal flag,
or cleared.
Tested to work on MPC8360E-RDK (BE) + Fujitsu MINT framebuffer (LE).
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: <Valdis.Kletnieks@vt.edu>
Cc: Clemens Koller <clemens.koller@anagramm.de>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/sysimgblt.c')
-rw-r--r-- | drivers/video/sysimgblt.c | 47 |
1 files changed, 22 insertions, 25 deletions
diff --git a/drivers/video/sysimgblt.c b/drivers/video/sysimgblt.c index bd7e7e9d155f..88daa9b6f69a 100644 --- a/drivers/video/sysimgblt.c +++ b/drivers/video/sysimgblt.c @@ -23,30 +23,26 @@ #define DPRINTK(fmt, args...) #endif -static const u32 cfb_tab8[] = { -#if defined(__BIG_ENDIAN) +static const u32 cfb_tab8_be[] = { 0x00000000,0x000000ff,0x0000ff00,0x0000ffff, 0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff, 0xff000000,0xff0000ff,0xff00ff00,0xff00ffff, 0xffff0000,0xffff00ff,0xffffff00,0xffffffff -#elif defined(__LITTLE_ENDIAN) +}; + +static const u32 cfb_tab8_le[] = { 0x00000000,0xff000000,0x00ff0000,0xffff0000, 0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00, 0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff, 0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff -#else -#error FIXME: No endianness?? -#endif }; -static const u32 cfb_tab16[] = { -#if defined(__BIG_ENDIAN) +static const u32 cfb_tab16_be[] = { 0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff -#elif defined(__LITTLE_ENDIAN) +}; + +static const u32 cfb_tab16_le[] = { 0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff -#else -#error FIXME: No endianness?? -#endif }; static const u32 cfb_tab32[] = { @@ -72,7 +68,7 @@ static void color_imageblit(const struct fb_image *image, struct fb_info *p, val = 0; if (start_index) { - u32 start_mask = ~(FB_SHIFT_HIGH(~(u32)0, + u32 start_mask = ~(FB_SHIFT_HIGH(p, ~(u32)0, start_index)); val = *dst & start_mask; shift = start_index; @@ -83,20 +79,20 @@ static void color_imageblit(const struct fb_image *image, struct fb_info *p, color = palette[*src]; else color = *src; - color <<= FB_LEFT_POS(bpp); - val |= FB_SHIFT_HIGH(color, shift); + color <<= FB_LEFT_POS(p, bpp); + val |= FB_SHIFT_HIGH(p, color, shift); if (shift >= null_bits) { *dst++ = val; val = (shift == null_bits) ? 0 : - FB_SHIFT_LOW(color, 32 - shift); + FB_SHIFT_LOW(p, color, 32 - shift); } shift += bpp; shift &= (32 - 1); src++; } if (shift) { - u32 end_mask = FB_SHIFT_HIGH(~(u32)0, shift); + u32 end_mask = FB_SHIFT_HIGH(p, ~(u32)0, shift); *dst &= end_mask; *dst |= val; @@ -125,8 +121,8 @@ static void slow_imageblit(const struct fb_image *image, struct fb_info *p, u32 i, j, l; dst2 = dst1; - fgcolor <<= FB_LEFT_POS(bpp); - bgcolor <<= FB_LEFT_POS(bpp); + fgcolor <<= FB_LEFT_POS(p, bpp); + bgcolor <<= FB_LEFT_POS(p, bpp); for (i = image->height; i--; ) { shift = val = 0; @@ -137,7 +133,8 @@ static void slow_imageblit(const struct fb_image *image, struct fb_info *p, /* write leading bits */ if (start_index) { - u32 start_mask = ~(FB_SHIFT_HIGH(~(u32)0,start_index)); + u32 start_mask = ~(FB_SHIFT_HIGH(p, ~(u32)0, + start_index)); val = *dst & start_mask; shift = start_index; } @@ -145,13 +142,13 @@ static void slow_imageblit(const struct fb_image *image, struct fb_info *p, while (j--) { l--; color = (*s & (1 << l)) ? fgcolor : bgcolor; - val |= FB_SHIFT_HIGH(color, shift); + val |= FB_SHIFT_HIGH(p, color, shift); /* Did the bitshift spill bits to the next long? */ if (shift >= null_bits) { *dst++ = val; val = (shift == null_bits) ? 0 : - FB_SHIFT_LOW(color,32 - shift); + FB_SHIFT_LOW(p, color, 32 - shift); } shift += bpp; shift &= (32 - 1); @@ -160,7 +157,7 @@ static void slow_imageblit(const struct fb_image *image, struct fb_info *p, /* write trailing bits */ if (shift) { - u32 end_mask = FB_SHIFT_HIGH(~(u32)0, shift); + u32 end_mask = FB_SHIFT_HIGH(p, ~(u32)0, shift); *dst &= end_mask; *dst |= val; @@ -199,10 +196,10 @@ static void fast_imageblit(const struct fb_image *image, struct fb_info *p, switch (bpp) { case 8: - tab = cfb_tab8; + tab = fb_be_math(p) ? cfb_tab8_be : cfb_tab8_le; break; case 16: - tab = cfb_tab16; + tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le; break; case 32: default: |