Devices with xc5000 provide the signal strength value in dBm.
So, provide it with the proper scale to userspace.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
---
drivers/media/dvb-frontends/au8522_dig.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb-frontends/au8522_dig.c b/drivers/media/dvb-frontends/au8522_dig.c
index 22d837494cc7..518040228064 100644
--- a/drivers/media/dvb-frontends/au8522_dig.c
+++ b/drivers/media/dvb-frontends/au8522_dig.c
@@ -744,6 +744,15 @@ static void au8522_get_stats(struct dvb_frontend *fe, enum fe_status status)
fe->ops.i2c_gate_ctrl(fe, 0);
if (ret < 0)
state->strength = 0;
+
+ /*
+ * FIXME: As this frontend is used only with au0828, and,
+ * currently, the tuner is eiter xc5000 or tda18271, and
+ * only the first implements get_rf_strength(), we'll assume
+ * that the strength will be returned in dB.
+ */
+ c->strength.stat[0].svalue = 35000 - 1000 * (65535 - state->strength) / 256;
+ c->strength.stat[0].scale = FE_SCALE_DECIBEL;
} else {
u32 tmp;
/*
@@ -769,9 +778,9 @@ static void au8522_get_stats(struct dvb_frontend *fe, enum fe_status status)
state->strength = 0xffff;
else
state->strength = tmp / 8960;
+ c->strength.stat[0].uvalue = state->strength;
+ c->strength.stat[0].scale = FE_SCALE_RELATIVE;
}
- c->strength.stat[0].scale = FE_SCALE_RELATIVE;
- c->strength.stat[0].uvalue = state->strength;
/* Read UCB blocks */
if (!(status & FE_HAS_LOCK)) {
--
2.7.4
--
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