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>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index d6f8b3b6af40..90f7859bb48e 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -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. */