diff mbox

[2/3] stb0899: store autodetected inversion while tuning in non S2 mode

Message ID 1368053456-18475-2-git-send-email-rnissl@gmx.de (mailing list archive)
State New, archived
Headers show

Commit Message

Reinhard Nissl May 8, 2013, 10:50 p.m. UTC 
In non S2 mode, the device is able to autodetect inversion. So
let's store it for tuning to S2 transponders.

Signed-off-by: Reinhard Nißl <rnissl@gmx.de>
---
 drivers/media/dvb-frontends/stb0899_algo.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox

Patch

diff --git a/drivers/media/dvb-frontends/stb0899_algo.c b/drivers/media/dvb-frontends/stb0899_algo.c
index 4b49efb..4ce542c 100644
--- a/drivers/media/dvb-frontends/stb0899_algo.c
+++ b/drivers/media/dvb-frontends/stb0899_algo.c
@@ -425,6 +425,14 @@  static enum stb0899_status stb0899_search_data(struct stb0899_state *state)
 
 	if (internal->status == DATAOK) {
 		stb0899_read_regs(state, STB0899_CFRM, cfr, 2); /* get derotator frequency */
+
+		/* store autodetected IQ swapping as default for DVB-S2 tuning */
+		reg = stb0899_read_reg(state, STB0899_IQSWAP);
+		if (STB0899_GETFIELD(SYM, reg))
+			internal->inversion = IQ_SWAP_ON;
+		else
+			internal->inversion = IQ_SWAP_OFF;
+
 		internal->derot_freq = state->config->inversion * MAKEWORD16(cfr[0], cfr[1]);
 		dprintk(state->verbose, FE_DEBUG, 1, "------> DATAOK ! Derot Freq=%d", internal->derot_freq);
 	}