From fe041f64faf5fecd2b6a9edecf7c74bb7cf71c95 Mon Sep 17 00:00:00 2001 From: Devin Heitmueller Date: Wed, 11 Mar 2009 02:00:19 -0400 Subject: au8522: fix register read/write high bits From: Devin Heitmueller For the i2c messages to read and write registers, the two high order bits of the first byte dictates whether it is a read or a write operation. Thanks to Michael Krufky and Steven Toth for providing sample hardware, engineering level support, and testing. Priority: normal Signed-off-by: Devin Heitmueller Signed-off-by: Michael Krufky --- linux/drivers/media/dvb/frontends/au8522_dig.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/linux/drivers/media/dvb/frontends/au8522_dig.c b/linux/drivers/media/dvb/frontends/au8522_dig.c index cd8f1ec3e..e63e17827 100644 --- a/linux/drivers/media/dvb/frontends/au8522_dig.c +++ b/linux/drivers/media/dvb/frontends/au8522_dig.c @@ -40,7 +40,7 @@ static int debug; int au8522_writereg(struct au8522_state *state, u16 reg, u8 data) { int ret; - u8 buf [] = { reg >> 8, reg & 0xff, data }; + u8 buf [] = { (reg >> 8) | 0x80, reg & 0xff, data }; struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 3 }; @@ -57,7 +57,7 @@ int au8522_writereg(struct au8522_state *state, u16 reg, u8 data) u8 au8522_readreg(struct au8522_state *state, u16 reg) { int ret; - u8 b0 [] = { reg >> 8, reg & 0xff }; + u8 b0 [] = { (reg >> 8) | 0x40, reg & 0xff }; u8 b1 [] = { 0 }; struct i2c_msg msg [] = { -- cgit v1.2.3