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: Tyler Trafford <ttrafford@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index d6f8b3b..90f7859 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -133,7 +133,9 @@
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 @@
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 @@
/* 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. */