[media] drxk: Fix bogus signal strength indicator

The DVBv3 signal strength indicator is bogus: it doesn't range
from 0 to 65535 as it would be expected. Also, 0 means the max
signal strength.
Now that a better way to estimate it was added, use the new
way.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb-frontends/drxk_hard.c b/drivers/media/dvb-frontends/drxk_hard.c
index 6e25053..fc93bd3 100644 (file)
--- a/drivers/media/dvb-frontends/drxk_hard.c
+++ b/drivers/media/dvb-frontends/drxk_hard.c
@@ -2490,32 +2490,6 @@ error:
        return status;
 }
 
-static int ReadIFAgc(struct drxk_state *state, u32 *pValue)
-{
-       u16 agcDacLvl;
-       int status;
-       u16 Level = 0;
-
-       dprintk(1, "\n");
-
-       status = read16(state, IQM_AF_AGC_IF__A, &agcDacLvl);
-       if (status < 0) {
-               printk(KERN_ERR "drxk: Error %d on %s\n", status, __func__);
-               return status;
-       }
-
-       *pValue = 0;
-
-       if (agcDacLvl > DRXK_AGC_DAC_OFFSET)
-               Level = agcDacLvl - DRXK_AGC_DAC_OFFSET;
-       if (Level < 14000)
-               *pValue = (14000 - Level) / 4;
-       else
-               *pValue = 0;
-
-       return status;
-}
-
 static int GetQAMSignalToNoise(struct drxk_state *state,
                               s32 *pSignalToNoise)
 {
@@ -6484,7 +6458,7 @@ static int get_strength(struct drxk_state *state, u64 *strength)
         * If it can't be measured (AGC is disabled), just show 100%.
         */
        if (totalGain > 0)
-               *strength = (65535UL * atten / totalGain);
+               *strength = (65535UL * atten / totalGain / 100);
        else
                *strength = 65535;
 
@@ -6633,7 +6607,7 @@ static int drxk_read_signal_strength(struct dvb_frontend *fe,
                                     u16 *strength)
 {
        struct drxk_state *state = fe->demodulator_priv;
-       u32 val = 0;
+       struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 
        dprintk(1, "\n");
 
@@ -6642,8 +6616,7 @@ static int drxk_read_signal_strength(struct dvb_frontend *fe,
        if (state->m_DrxkState == DRXK_UNINITIALIZED)
                return -EAGAIN;
 
-       ReadIFAgc(state, &val);
-       *strength = val & 0xffff;
+       *strength = c->strength.stat[0].uvalue;
        return 0;
 }