AST_HWC_SIZE
for (i = 0; i < AST_HWC_SIZE; i += 2)
memcpy_toio(dst, src, AST_HWC_SIZE);
dst += AST_HWC_SIZE;
u8 __iomem *sig = dst + AST_HWC_SIZE; /* TODO: Use mapping abstraction properly */
return AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE;
u8 argb4444[AST_HWC_SIZE];