diff options
Diffstat (limited to 'drivers/media/dvb/frontends/mt352.c')
| -rw-r--r-- | drivers/media/dvb/frontends/mt352.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/media/dvb/frontends/mt352.c b/drivers/media/dvb/frontends/mt352.c index d32dc4de9e7f..cc1bc0edd65e 100644 --- a/drivers/media/dvb/frontends/mt352.c +++ b/drivers/media/dvb/frontends/mt352.c @@ -462,9 +462,11 @@ static int mt352_read_signal_strength(struct dvb_frontend* fe, u16* strength) { struct mt352_state* state = fe->demodulator_priv; - u16 signal = ((mt352_read_register(state, AGC_GAIN_1) << 8) & 0x0f) | - (mt352_read_register(state, AGC_GAIN_0)); + /* align the 12 bit AGC gain with the most significant bits */ + u16 signal = ((mt352_read_register(state, AGC_GAIN_1) & 0x0f) << 12) | + (mt352_read_register(state, AGC_GAIN_0) << 4); + /* inverse of gain is signal strength */ *strength = ~signal; return 0; } |