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Commit 38051450 authored by Tyler Trafford's avatar Tyler Trafford Committed by Mauro Carvalho Chehab
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V4L/DVB (6124): cx25840: add a few 10 microsecond delays 



There were a couple of places in the cx25840 initialization where the
datasheet called for a 10 microsecond delay, which we ignored because
of the 10 usec I2C delay. Put them in anyway now that the I2C delay
was decreased to 5 usec.

Signed-off-by: default avatarTyler Trafford <ttrafford@gmail.com>
Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 51b39dfa

drivers/media/video/cx25840/cx25840-core.c

+4 −3
Original line number Diff line number Diff line
@@ -133,7 +133,9 @@ static void init_dll1(struct i2c_client *client) 
	cx25840_write(client, 0x159, 0x23);

	cx25840_write(client, 0x15a, 0x87);

	cx25840_write(client, 0x15b, 0x06);

	udelay(10);

	cx25840_write(client, 0x159, 0xe1);

	udelay(10);

	cx25840_write(client, 0x15a, 0x86);

	cx25840_write(client, 0x159, 0xe0);

	cx25840_write(client, 0x159, 0xe1);
@@ -147,6 +149,7 @@ static void init_dll2(struct i2c_client *client) 
	cx25840_write(client, 0x15d, 0xe3);

	cx25840_write(client, 0x15e, 0x86);

	cx25840_write(client, 0x15f, 0x06);

	udelay(10);

	cx25840_write(client, 0x15d, 0xe1);

	cx25840_write(client, 0x15d, 0xe0);

	cx25840_write(client, 0x15d, 0xe1);
@@ -165,9 +168,7 @@ static void cx25836_initialize(struct i2c_client *client) 
	/* 3c. */

	cx25840_and_or(client, 0x159, ~0x02, 0x02);

	/* 3d. */

	/* There should be a 10-us delay here, but since the

	   i2c bus already has a 10-us delay we don't need to do

	   anything */

	udelay(10);

	/* 3e. */

	cx25840_and_or(client, 0x159, ~0x02, 0x00);

	/* 3f. */