[PATCH] atyfb: Fix hardware cursor handling
Fix image and color handling in atyfb_cursor() - In the 2-bit scheme of the cursor image, just set the first bit to be always zero (turn off transparency and/or XOR), and just do the masking manually - The cursor color is converted into 32-bit RGBA8888 using struct fb_cmap. Each component in the cmap is u16 in size, so mask the upper 8 bits. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -66,11 +66,6 @@ static const u8 cursor_bits_lookup[16] = {
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0x01, 0x41, 0x11, 0x51, 0x05, 0x45, 0x15, 0x55
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};
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static const u8 cursor_mask_lookup[16] = {
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0xaa, 0x2a, 0x8a, 0x0a, 0xa2, 0x22, 0x82, 0x02,
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0xa8, 0x28, 0x88, 0x08, 0xa0, 0x20, 0x80, 0x00
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};
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static int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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@ -130,13 +125,13 @@ static int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
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fg_idx = cursor->image.fg_color;
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bg_idx = cursor->image.bg_color;
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fg = (info->cmap.red[fg_idx] << 24) |
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(info->cmap.green[fg_idx] << 16) |
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(info->cmap.blue[fg_idx] << 8) | 15;
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fg = ((info->cmap.red[fg_idx] & 0xff) << 24) |
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((info->cmap.green[fg_idx] & 0xff) << 16) |
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((info->cmap.blue[fg_idx] & 0xff) << 8) | 0xff;
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bg = (info->cmap.red[bg_idx] << 24) |
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(info->cmap.green[bg_idx] << 16) |
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(info->cmap.blue[bg_idx] << 8);
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bg = ((info->cmap.red[bg_idx] & 0xff) << 24) |
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((info->cmap.green[bg_idx] & 0xff) << 16) |
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((info->cmap.blue[bg_idx] & 0xff) << 8);
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wait_for_fifo(2, par);
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aty_st_le32(CUR_CLR0, bg, par);
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@ -166,19 +161,17 @@ static int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
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switch (cursor->rop) {
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case ROP_XOR:
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// Upper 4 bits of mask data
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fb_writeb(cursor_mask_lookup[m >> 4 ] |
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cursor_bits_lookup[(b ^ m) >> 4], dst++);
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fb_writeb(cursor_bits_lookup[(b ^ m) >> 4], dst++);
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// Lower 4 bits of mask
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fb_writeb(cursor_mask_lookup[m & 0x0f ] |
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cursor_bits_lookup[(b ^ m) & 0x0f], dst++);
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fb_writeb(cursor_bits_lookup[(b ^ m) & 0x0f],
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dst++);
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break;
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case ROP_COPY:
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// Upper 4 bits of mask data
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fb_writeb(cursor_mask_lookup[m >> 4 ] |
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cursor_bits_lookup[(b & m) >> 4], dst++);
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fb_writeb(cursor_bits_lookup[(b & m) >> 4], dst++);
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// Lower 4 bits of mask
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fb_writeb(cursor_mask_lookup[m & 0x0f ] |
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cursor_bits_lookup[(b & m) & 0x0f], dst++);
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fb_writeb(cursor_bits_lookup[(b & m) & 0x0f],
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dst++);
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break;
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}
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}
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