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path: root/linux/drivers/media/dvb/frontends/cx24123.c
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Diffstat (limited to 'linux/drivers/media/dvb/frontends/cx24123.c')
-rw-r--r--linux/drivers/media/dvb/frontends/cx24123.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/linux/drivers/media/dvb/frontends/cx24123.c b/linux/drivers/media/dvb/frontends/cx24123.c
index 7f729c02a..842dc9a02 100644
--- a/linux/drivers/media/dvb/frontends/cx24123.c
+++ b/linux/drivers/media/dvb/frontends/cx24123.c
@@ -202,7 +202,7 @@ static struct {
{0x06, 0x31}, /* MPEG (default) */
{0x0b, 0x00}, /* Freq search start point (default) */
{0x0c, 0x00}, /* Demodulator sample gain (default) */
- {0x0d, 0x02}, /* Frequency search range = Fsymbol / 4 (default) */
+ {0x0d, 0x7f}, /* Force driver to shift until the maximum (+-10 MHz) */
{0x0e, 0x03}, /* Default non-inverted, FEC 3/4 (default) */
{0x0f, 0xfe}, /* FEC search mask (all supported codes) */
{0x10, 0x01}, /* Default search inversion, no repeat (default) */
@@ -233,6 +233,7 @@ static struct {
{0x46, 0x0d}, /* Symbol rate estimator on (default) */
{0x56, 0xc1}, /* Error Counter = Viterbi BER */
{0x57, 0xff}, /* Error Counter Window (default) */
+ {0x5c, 0x20}, /* Acquisition AFC Expiration window (default is 0x10) */
{0x67, 0x83}, /* Non-DCII symbol clock */
};
@@ -671,6 +672,10 @@ static int cx24123_initfe(struct dvb_frontend* fe)
for (i = 0; i < sizeof(cx24123_regdata) / sizeof(cx24123_regdata[0]); i++)
cx24123_writereg(state, cx24123_regdata[i].reg, cx24123_regdata[i].data);
+ /* Set the LNB polarity */
+ if(state->config->lnb_polarity)
+ cx24123_writereg(state, 0x32, cx24123_readreg(state, 0x32) | 0x02);
+
return 0;
}
@@ -688,6 +693,9 @@ static int cx24123_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage
case SEC_VOLTAGE_18:
dprintk("%s: setting voltage 18V\n", __FUNCTION__);
return cx24123_writereg(state, 0x29, val | 0x80);
+ case SEC_VOLTAGE_OFF:
+ /* already handled in cx88-dvb */
+ return 0;
default:
return -EINVAL;
};
@@ -790,13 +798,15 @@ static int cx24123_read_status(struct dvb_frontend* fe, fe_status_t* status)
if (lock & 0x01)
*status |= FE_HAS_SIGNAL;
if (sync & 0x02)
- *status |= FE_HAS_CARRIER;
+ *status |= FE_HAS_CARRIER; /* Phase locked */
if (sync & 0x04)
*status |= FE_HAS_VITERBI;
+
+ /* Reed-Solomon Status */
if (sync & 0x08)
*status |= FE_HAS_SYNC;
if (sync & 0x80)
- *status |= FE_HAS_LOCK;
+ *status |= FE_HAS_LOCK; /*Full Sync */
return 0;
}
@@ -823,6 +833,7 @@ static int cx24123_read_ber(struct dvb_frontend* fe, u32* ber)
static int cx24123_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength)
{
struct cx24123_state *state = fe->demodulator_priv;
+
*signal_strength = cx24123_readreg(state, 0x3b) << 8; /* larger = better */
dprintk("%s: Signal strength = %d\n",__FUNCTION__,*signal_strength);