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| author | Devin Heitmueller <dheitmueller@linuxtv.org> | 2009-03-11 02:00:34 -0400 |
|---|---|---|
| committer | Devin Heitmueller <dheitmueller@linuxtv.org> | 2009-03-11 02:00:34 -0400 |
| commit | c55d671ee9eb267b04c218863cd9a577fa036dbc (patch) | |
| tree | 4ac8e9fe30a4fbcfe92bf4bd0974a5ccd1a19386 /linux/drivers/media/dvb | |
| parent | fe041f64faf5fecd2b6a9edecf7c74bb7cf71c95 (diff) | |
| download | mediapointer-dvb-s2-c55d671ee9eb267b04c218863cd9a577fa036dbc.tar.gz mediapointer-dvb-s2-c55d671ee9eb267b04c218863cd9a577fa036dbc.tar.bz2 | |
au8522: power down the digital demod when not in use
From: Devin Heitmueller <dheitmueller@linuxtv.org>
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.
Priority: normal
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Diffstat (limited to 'linux/drivers/media/dvb')
| -rw-r--r-- | linux/drivers/media/dvb/frontends/au8522_dig.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/linux/drivers/media/dvb/frontends/au8522_dig.c b/linux/drivers/media/dvb/frontends/au8522_dig.c index e63e17827..a78636286 100644 --- a/linux/drivers/media/dvb/frontends/au8522_dig.c +++ b/linux/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; |