Put demod to soft reset in order to save power when sleep. That drops
power usage ~30mA @5V on USB dongle I tested. In real life it does
not matter much as USB IF powers off demod too, but now it is done
twice - demod and USB IF.
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/dvb-frontends/rtl2832.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 70fdce4..e620a61 100644
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -410,13 +410,23 @@ static int rtl2832_sleep(struct dvb_frontend *fe)
{
struct rtl2832_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
+ int ret;
dev_dbg(&client->dev, "\n");
+
dev->sleeping = true;
/* stop statistics polling */
cancel_delayed_work_sync(&dev->stat_work);
dev->fe_status = 0;
+
+ ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x1);
+ if (ret)
+ goto err;
+
return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
}
static int rtl2832_get_tune_settings(struct dvb_frontend *fe,
--
http://palosaari.fi/
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
