From: Olivier Grenie <olivier.gre...@dibcom.fr>
This patch improves the overall driver performance in
diversity-reception scenarios.
Signed-off-by: Olivier Grenie <olivier.gre...@dibcom.fr>
Signed-off-by: Patrick Boettcher <patrick.boettc...@dibcom.fr>
---
drivers/media/dvb/dvb-usb/dib0700_devices.c | 1 +
drivers/media/dvb/frontends/dib7000p.c | 6 +++++-
drivers/media/dvb/frontends/dib7000p.h | 2 ++
3 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c
b/drivers/media/dvb/dvb-usb/dib0700_devices.c
index f9766c7..6015cfd 100644
--- a/drivers/media/dvb/dvb-usb/dib0700_devices.c
+++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c
@@ -956,6 +956,7 @@ static struct dib7000p_config dib7770p_dib7000p_config = {
.hostbus_diversity = 1,
.enable_current_mirror = 1,
+ .disable_sample_and_hold = 0,
};
static int stk7770p_frontend_attach(struct dvb_usb_adapter *adap)
diff --git a/drivers/media/dvb/frontends/dib7000p.c
b/drivers/media/dvb/frontends/dib7000p.c
index 73f59ab..3aed0d4 100644
--- a/drivers/media/dvb/frontends/dib7000p.c
+++ b/drivers/media/dvb/frontends/dib7000p.c
@@ -260,6 +260,7 @@ static void dib7000p_set_adc_state(struct dib7000p_state
*state, enum dibx000_ad
// dprintk( "908: %x, 909: %x\n", reg_908, reg_909);
+ reg_909 |= (state->cfg.disable_sample_and_hold & 1) << 4;
reg_908 |= (state->cfg.enable_current_mirror & 1) << 7;
dib7000p_write_word(state, 908, reg_908);
@@ -780,7 +781,10 @@ static void dib7000p_set_channel(struct dib7000p_state
*state, struct dvb_fronte
default:
case GUARD_INTERVAL_1_32: value *= 1; break;
}
- state->div_sync_wait = (value * 3) / 2 + 32; // add 50% SFN margin +
compensate for one DVSY-fifo TODO
+ if (state->cfg.diversity_delay == 0)
+ state->div_sync_wait = (value * 3) / 2 + 48; // add 50% SFN
margin + compensate for one DVSY-fifo
+ else
+ state->div_sync_wait = (value * 3) / 2 +
state->cfg.diversity_delay; // add 50% SFN margin + compensate for one DVSY-fifo
/* deactive the possibility of diversity reception if extended
interleaver */
state->div_force_off = !1 && ch->u.ofdm.transmission_mode !=
TRANSMISSION_MODE_8K;
diff --git a/drivers/media/dvb/frontends/dib7000p.h
b/drivers/media/dvb/frontends/dib7000p.h
index 04a7449..da17345 100644
--- a/drivers/media/dvb/frontends/dib7000p.h
+++ b/drivers/media/dvb/frontends/dib7000p.h
@@ -33,8 +33,10 @@ struct dib7000p_config {
int (*agc_control) (struct dvb_frontend *, u8 before);
u8 output_mode;
+ u8 disable_sample_and_hold : 1;
u8 enable_current_mirror : 1;
+ u8 diversity_delay;
};
--
1.7.0.4
--
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