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path: root/drivers/media/dvb/frontends/s5h1409.c
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Diffstat (limited to 'drivers/media/dvb/frontends/s5h1409.c')
-rw-r--r--drivers/media/dvb/frontends/s5h1409.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409.c
index fb3011518427..85fba581c5ab 100644
--- a/drivers/media/dvb/frontends/s5h1409.c
+++ b/drivers/media/dvb/frontends/s5h1409.c
@@ -614,6 +614,21 @@ static int s5h1409_init(struct dvb_frontend *fe)
/* The datasheet says that after initialisation, VSB is default */
state->current_modulation = VSB_8;
+ /* Optimize for the HVR-1600 if appropriate. Note that some of these
+ may get folded into the generic case after testing with other
+ devices */
+ if (state->config->hvr1600_opt == S5H1409_HVR1600_OPTIMIZE) {
+ /* VSB AGC REF */
+ s5h1409_writereg(state, 0x09, 0x0050);
+
+ /* Unknown but Windows driver does it... */
+ s5h1409_writereg(state, 0x21, 0x0001);
+ s5h1409_writereg(state, 0x50, 0x030e);
+
+ /* QAM AGC REF */
+ s5h1409_writereg(state, 0x82, 0x0800);
+ }
+
if (state->config->output_mode == S5H1409_SERIAL_OUTPUT)
s5h1409_writereg(state, 0xab,
s5h1409_readreg(state, 0xab) | 0x100); /* Serial */