diff options
| author | Devin Heitmueller <dheitmueller@linuxtv.org> | 2009-03-11 03:00:19 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 12:43:24 -0300 |
| commit | 083a17317be27a0f33d999b4360320b322a8b55b (patch) | |
| tree | 0a6248807c999fb1753f4585bad0f316d517b7a5 | |
| parent | 0c44bf362fc1f0dc927b814184d9b877a2f507cf (diff) | |
V4L/DVB (11062): au8522: fix register read/write high bits
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 <mkrufky@linuxtv.org> and Steven Toth
<stoth@linuxtv.org> for providing sample hardware, engineering level support,
and testing.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/dvb/frontends/au8522_dig.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/dvb/frontends/au8522_dig.c b/drivers/media/dvb/frontends/au8522_dig.c index 8082547c73e2..17bdbe2c67e6 100644 --- a/drivers/media/dvb/frontends/au8522_dig.c +++ b/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 [] = { |