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media: saa7115: Replace open-coded parity calculation with parity8() 

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>
This commit is contained in:
Kuan-Wei Chiu 2025-05-15 16:11:09 +08:00 committed by Hans Verkuil
parent df698f3d10
commit 118f2834b2
1 changed files with 2 additions and 10 deletions
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12
drivers/media/i2c/saa7115.c
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@ -25,6 +25,7 @@
#include "saa711x_regs.h"
#include <linux/bitops.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
@ -664,15 +665,6 @@ static const unsigned char saa7115_init_misc[] = {
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[] = {
@ -1227,7 +1219,7 @@ static int saa711x_decode_vbi_line(struct v4l2_subdev *sd, struct v4l2_decode_vb
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;