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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-08-28 22:56:47 +0200 |
|---|---|---|
| committer | Hans Verkuil <hverkuil@xs4all.nl> | 2007-08-28 22:56:47 +0200 |
| commit | bfdfc0fe0d54a9f85ab488d74118652b6023ce5f (patch) | |
| tree | 027cab14e0026cf315527878a49312a27d7df2f7 | |
| parent | 2db901634dc12a5abf91e98cfd829e839bc58cb6 (diff) | |
| download | mediapointer-dvb-s2-bfdfc0fe0d54a9f85ab488d74118652b6023ce5f.tar.gz mediapointer-dvb-s2-bfdfc0fe0d54a9f85ab488d74118652b6023ce5f.tar.bz2 | |
cx25840: add a few 10 microsecond delays
From: Tyler Trafford <ttrafford@gmail.com>
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>
| -rw-r--r-- | linux/drivers/media/video/cx25840/cx25840-core.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/linux/drivers/media/video/cx25840/cx25840-core.c b/linux/drivers/media/video/cx25840/cx25840-core.c index 2a24fc38a..febda8867 100644 --- a/linux/drivers/media/video/cx25840/cx25840-core.c +++ b/linux/drivers/media/video/cx25840/cx25840-core.c @@ -144,7 +144,9 @@ 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); @@ -158,6 +160,7 @@ 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); @@ -176,9 +179,7 @@ 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. */ |