diff options
| author | Devin Heitmueller <dheitmueller@linuxtv.org> | 2009-03-11 09:00:34 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 19:43:24 +0400 |
| commit | 7bf63eda681e095ca3c39d075354053107febf80 (patch) | |
| tree | 84b4a7a6b23bdbd88a3b17bdb0df02fa52c27e12 /drivers/media/dvb/frontends/au8522_dig.c | |
| parent | 083a17317be27a0f33d999b4360320b322a8b55b (diff) | |
| download | linux-7bf63eda681e095ca3c39d075354053107febf80.tar.xz | |
V4L/DVB (11063): au8522: power down the digital demod when not in use
When the au8522 is idle, put the chip into a low power mode (reduces power
consumption from 450ma to 346ma)
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>
Diffstat (limited to 'drivers/media/dvb/frontends/au8522_dig.c')
| -rw-r--r-- | drivers/media/dvb/frontends/au8522_dig.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/au8522_dig.c b/drivers/media/dvb/frontends/au8522_dig.c index 17bdbe2c67e6..fa3ecbed1e58 100644 --- a/drivers/media/dvb/frontends/au8522_dig.c +++ b/drivers/media/dvb/frontends/au8522_dig.c @@ -617,6 +617,9 @@ int au8522_sleep(struct dvb_frontend *fe) /* turn off led */ au8522_led_ctrl(state, 0); + /* Power down the chip */ + au8522_writereg(state, 0xa4, 1 << 5); + state->current_frequency = 0; return 0; |