diff mbox

[2/3] stv090x: use error counter 1 for BER estimation

Message ID 4F5CE86B.8040403@gmx.de (mailing list archive)
State Changes Requested, archived
Headers

Commit Message

Andreas Regel March 11, 2012, 6:01 p.m. UTC 
  ---
 drivers/media/dvb/frontends/stv090x.c |   30 +++++++++++++++++++++++++++++-
 1 files changed, 29 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index 6c3c095..afbd50c 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3512,6 +3512,33 @@  static int stv090x_read_status(struct dvb_frontend *fe, enum fe_status *status)
 	return 0;
 }
 
+static int stv090x_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+	struct stv090x_state *state = fe->demodulator_priv;
+
+	u32 reg, h, m, l;
+	enum fe_status status;
+
+	stv090x_read_status(fe, &status);
+	if (!(status & FE_HAS_LOCK)) {
+		*ber = 1 << 23; /* Max BER */
+	} else {
+		/* Counter 1 */
+		reg = STV090x_READ_DEMOD(state, ERRCNT12);
+		h = STV090x_GETFIELD_Px(reg, ERR_CNT12_FIELD);
+
+		reg = STV090x_READ_DEMOD(state, ERRCNT11);
+		m = STV090x_GETFIELD_Px(reg, ERR_CNT11_FIELD);
+
+		reg = STV090x_READ_DEMOD(state, ERRCNT10);
+		l = STV090x_GETFIELD_Px(reg, ERR_CNT10_FIELD);
+
+		*ber = ((h << 16) | (m << 8) | l);
+	}
+	return 0;
+}
+
+#if 0
 static int stv090x_read_per(struct dvb_frontend *fe, u32 *per)
 {
 	struct stv090x_state *state = fe->demodulator_priv;
@@ -3562,6 +3589,7 @@  err:
 	dprintk(FE_ERROR, 1, "I/O error");
 	return -1;
 }
+#endif
 
 static int stv090x_table_lookup(const struct stv090x_tab *tab, int max, int val)
 {
@@ -4740,7 +4768,7 @@  static struct dvb_frontend_ops stv090x_ops = {
 
 	.search				= stv090x_search,
 	.read_status			= stv090x_read_status,
-	.read_ber			= stv090x_read_per,
+	.read_ber			= stv090x_read_ber,
 	.read_signal_strength		= stv090x_read_signal_strength,
 	.read_snr			= stv090x_read_cnr,
 };