From 2cd1de0a0ff1d3da08ff1f1437cf4a44deae6a00 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Sun, 4 Jan 2009 11:58:20 +0100 Subject: fbdev: c2p - Extract common c2p core to c2p_core.h Signed-off-by: Geert Uytterhoeven --- drivers/video/c2p.c | 92 +---------------------------------------------------- 1 file changed, 1 insertion(+), 91 deletions(-) (limited to 'drivers/video/c2p.c') diff --git a/drivers/video/c2p.c b/drivers/video/c2p.c index c170fff0d35..1238c8b912e 100644 --- a/drivers/video/c2p.c +++ b/drivers/video/c2p.c @@ -3,10 +3,6 @@ * * Copyright (C) 2003-2008 Geert Uytterhoeven * - * NOTES: - * - This code was inspired by Scout's C2P tutorial - * - It assumes to run on a big endian system - * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive * for more details. @@ -18,82 +14,7 @@ #include #include "c2p.h" - - - /* - * Basic transpose step - */ - -static inline void _transp(u32 d[], unsigned int i1, unsigned int i2, - unsigned int shift, u32 mask) -{ - u32 t = (d[i1] ^ (d[i2] >> shift)) & mask; - - d[i1] ^= t; - d[i2] ^= t << shift; -} - -extern void c2p_unsupported(void); - -static inline u32 get_mask(unsigned int n) -{ - switch (n) { - case 1: - return 0x55555555; - - case 2: - return 0x33333333; - - case 4: - return 0x0f0f0f0f; - - case 8: - return 0x00ff00ff; - - case 16: - return 0x0000ffff; - } - - c2p_unsupported(); - return 0; -} - -static inline void transp8(u32 d[], unsigned int n, unsigned int m) -{ - u32 mask = get_mask(n); - - switch (m) { - case 1: - /* First n x 1 block */ - _transp(d, 0, 1, n, mask); - /* Second n x 1 block */ - _transp(d, 2, 3, n, mask); - /* Third n x 1 block */ - _transp(d, 4, 5, n, mask); - /* Fourth n x 1 block */ - _transp(d, 6, 7, n, mask); - return; - - case 2: - /* First n x 2 block */ - _transp(d, 0, 2, n, mask); - _transp(d, 1, 3, n, mask); - /* Second n x 2 block */ - _transp(d, 4, 6, n, mask); - _transp(d, 5, 7, n, mask); - return; - - case 4: - /* Single n x 4 block */ - _transp(d, 0, 4, n, mask); - _transp(d, 1, 5, n, mask); - _transp(d, 2, 6, n, mask); - _transp(d, 3, 7, n, mask); - return; - } - - c2p_unsupported(); -} +#include "c2p_core.h" /* @@ -120,17 +41,6 @@ static void c2p_32x8(u32 d[8]) static const int perm_c2p_32x8[8] = { 7, 5, 3, 1, 6, 4, 2, 0 }; - /* - * Compose two values, using a bitmask as decision value - * This is equivalent to (a & mask) | (b & ~mask) - */ - -static inline u32 comp(u32 a, u32 b, u32 mask) -{ - return ((a ^ b) & mask) ^ b; -} - - /* * Store a full block of planar data after c2p conversion */ -- cgit v1.2.3