Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 59dcd948 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab Committed by Linus Torvalds
Browse files

[PATCH] v4l: PAL-M support fix for CX88 chipsets 



This patch fixes PAL-M chroma subcarrier frequency (FSC) to its correct
value of 3.5756115 MHz and adjusts horizontal total samples for PAL-M,
according with formula Line Draw Time / (4*FSC).

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@brturbo.com.br>
Cc: <video4linux-list@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent f246a817

drivers/media/video/cx88/cx88-core.c

+9 −0
Original line number Diff line number Diff line
@@ -736,6 +736,10 @@ static unsigned int inline norm_fsc8(struct cx88_tvnorm *norm) 
{

	static const unsigned int ntsc = 28636360;

	static const unsigned int pal  = 35468950;

	static const unsigned int palm  = 28604892;



	if (norm->id & V4L2_STD_PAL_M)

		return palm;



	return (norm->id & V4L2_STD_625_50) ? pal : ntsc;

}
@@ -749,6 +753,11 @@ static unsigned int inline norm_notchfilter(struct cx88_tvnorm *norm) 


static unsigned int inline norm_htotal(struct cx88_tvnorm *norm)

{

	/* Should always be Line Draw Time / (4*FSC) */



	if (norm->id & V4L2_STD_PAL_M)

		return 909;



	return (norm->id & V4L2_STD_625_50) ? 1135 : 910;

}