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media: cxd2880:Optimized spi drive current and BER/PER set/get condition

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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.Takiguchi@sony.com>
Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@sony.com>
Signed-off-by: Hideki Nozawa <Hideki.Nozawa@sony.com>
Signed-off-by: Kota Yonezawa <Kota.Yonezawa@sony.com>
Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@sony.com>
Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@sony.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Yasunari Takiguchi 2018-04-26 02:41:29 -04:00 committed by Mauro Carvalho Chehab
parent 447f0081fc
commit f2e7af0bae
1 changed files with 12 additions and 2 deletions
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14
drivers/media/dvb-frontends/cxd2880/cxd2880_top.c
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@ -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);