Refactor parity calculations to use the standard parity8() helper.
This change eliminates redundant implementations.
Co-developed-by: Yu-Chun Lin <eleanor15x@gmail.com>
Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com>
Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
#include "saa711x_regs.h"
+#include <linux/bitops.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
0x00, 0x00
};
-static int saa711x_odd_parity(u8 c)
-{
- c ^= (c >> 4);
- c ^= (c >> 2);
- c ^= (c >> 1);
-
- return c & 1;
-}
-
static int saa711x_decode_vps(u8 *dst, u8 *p)
{
static const u8 biphase_tbl[] = {
vbi->type = V4L2_SLICED_TELETEXT_B;
break;
case 4:
- if (!saa711x_odd_parity(p[0]) || !saa711x_odd_parity(p[1]))
+ if (!parity8(p[0]) || !parity8(p[1]))
return 0;
vbi->type = V4L2_SLICED_CAPTION_525;
break;