From: Yasunari Takiguchi <yasunari.takigu...@sony.com>
This is the optimization for SPI drive current and
signal lock condition check part for BER/PER measure
to ensure BER/PER are stable
Signed-off-by: Yasunari Takiguchi <yasunari.takigu...@sony.com>
Signed-off-by: Masayuki Yamamoto <masayuki.yamam...@sony.com>
Signed-off-by: Hideki Nozawa <hideki.noz...@sony.com>
Signed-off-by: Kota Yonezawa <kota.yonez...@sony.com>
Signed-off-by: Toshihiko Matsumoto <toshihiko.matsum...@sony.com>
Signed-off-by: Satoshi Watanabe <satoshi.c.watan...@sony.com>
---
[Change list]
drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
-reduced the SPI output drive current
-optimized signal lock condition check part for BER/PER measure
to ensure BER/PER are stable
drivers/media/dvb-frontends/cxd2880/cxd2880_top.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
b/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
index d474dc1b05da..bd9101e246d5 100644
--- a/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
+++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
@@ -520,6 +520,15 @@ static int cxd2880_init(struct dvb_frontend *fe)
pr_err("cxd2880 integ init failed %d\n", ret);
return ret;
}
+
+ ret = cxd2880_tnrdmd_set_cfg(&priv->tnrdmd,
+ CXD2880_TNRDMD_CFG_TSPIN_CURRENT,
+ 0x00);
+ if (ret) {
+ mutex_unlock(priv->spi_mutex);
+ pr_err("cxd2880 set config failed %d\n", ret);
+ return ret;
+ }
mutex_unlock(priv->spi_mutex);
pr_debug("OK.\n");
@@ -1126,7 +1135,7 @@ static int cxd2880_get_stats(struct dvb_frontend *fe,
priv = fe->demodulator_priv;
c = &fe->dtv_property_cache;
- if (!(status & FE_HAS_LOCK)) {
+ if (!(status & FE_HAS_LOCK) || !(status & FE_HAS_CARRIER)) {
c->pre_bit_error.len = 1;
c->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->pre_bit_count.len = 1;
@@ -1345,7 +1354,8 @@ static int cxd2880_read_status(struct dvb_frontend *fe,
pr_debug("status %d\n", *status);
- if (priv->s == 0 && (*status & FE_HAS_LOCK)) {
+ if (priv->s == 0 && (*status & FE_HAS_LOCK) &&
+ (*status & FE_HAS_CARRIER)) {
mutex_lock(priv->spi_mutex);
if (c->delivery_system == SYS_DVBT) {
ret = cxd2880_set_ber_per_period_t(fe);
--
2.15.1
