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V4L/DVB (3514): SAA7113 doesn't have auto std chroma detection mode

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This patch makes chroma standard selection based at possible values,
according with datasheet.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2006-03-14 16:33:33 -03:00 committed by Linus Torvalds
parent f5762e441d
commit f89982a978
1 changed files with 29 additions and 0 deletions
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29
drivers/media/video/saa7115.c
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@ -713,6 +713,35 @@ static void saa7115_set_v4lstd(struct i2c_client *client, v4l2_std_id std)
saa7115_writeregs(client, saa7115_cfg_50hz_video);
}
/* Register 0E - Bits D6-D4 on NO-AUTO mode
(SAA7113 doesn't have auto mode)
50 Hz / 625 lines 60 Hz / 525 lines
000 PAL BGDHI (4.43Mhz) NTSC M (3.58MHz)
001 NTSC 4.43 (50 Hz) PAL 4.43 (60 Hz)
010 Combination-PAL N (3.58MHz) NTSC 4.43 (60 Hz)
011 NTSC N (3.58MHz) PAL M (3.58MHz)
100 reserved NTSC-Japan (3.58MHz)
*/
if (state->ident == V4L2_IDENT_SAA7113) {
u8 reg = saa7115_read(client, 0x0e) & 0x8f;
if (std & V4L2_STD_PAL) {
if (std == V4L2_STD_PAL_M) {
reg|=0x30;
} else if (std == V4L2_STD_PAL_N) {
reg|=0x20;
} else if (std == V4L2_STD_PAL_60) {
reg|=0x10;
}
} else if (std & V4L2_STD_NTSC) {
if (std == V4L2_STD_NTSC_M_JP) {
reg|=0x40;
}
}
saa7115_write(client, 0x0e, reg);
}
state->std = std;
/* restart task B if needed */