[patch 37/57] DVB: s5h1411: Power down s5h1411 when not in use

From: Greg KH
Date: Tue Nov 04 2008 - 18:51:34 EST



2.6.27-stable review patch. If anyone has any objections, please let us know.

------------------
From: Devin Heitmueller <devin.heitmueller@xxxxxxxxx>

cherry picked from commit 11fc9a4a440112b5afc1a99d86ba92d70205a688

DVB: s5h1411: Power down s5h1411 when not in use

Power down the s5h1411 demodulator when not in use
(on the Pinnacle 801e, this brings idle power from
123ma down to 84ma).

Signed-off-by: Devin Heitmueller <devin.heitmueller@xxxxxxxxx>
Acked-by: Steven Toth <stoth@xxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Michael Krufky <mkrufky@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
drivers/media/dvb/frontends/s5h1411.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

--- a/drivers/media/dvb/frontends/s5h1411.c
+++ b/drivers/media/dvb/frontends/s5h1411.c
@@ -549,7 +549,7 @@ static int s5h1411_set_gpio(struct dvb_f
return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xe0, val);
}

-static int s5h1411_sleep(struct dvb_frontend *fe, int enable)
+static int s5h1411_set_powerstate(struct dvb_frontend *fe, int enable)
{
struct s5h1411_state *state = fe->demodulator_priv;

@@ -565,6 +565,11 @@ static int s5h1411_sleep(struct dvb_fron
return 0;
}

+static int s5h1411_sleep(struct dvb_frontend *fe)
+{
+ return s5h1411_set_powerstate(fe, 1);
+}
+
static int s5h1411_register_reset(struct dvb_frontend *fe)
{
struct s5h1411_state *state = fe->demodulator_priv;
@@ -614,7 +619,7 @@ static int s5h1411_init(struct dvb_front

dprintk("%s()\n", __func__);

- s5h1411_sleep(fe, 0);
+ s5h1411_set_powerstate(fe, 0);
s5h1411_register_reset(fe);

for (i = 0; i < ARRAY_SIZE(init_tab); i++)
@@ -878,6 +883,7 @@ static struct dvb_frontend_ops s5h1411_o
},

.init = s5h1411_init,
+ .sleep = s5h1411_sleep,
.i2c_gate_ctrl = s5h1411_i2c_gate_ctrl,
.set_frontend = s5h1411_set_frontend,
.get_frontend = s5h1411_get_frontend,

--
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