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-rw-r--r--drivers/media/dvb/frontends/s5h1409.c15
-rw-r--r--drivers/media/dvb/frontends/s5h1409.h7
-rw-r--r--drivers/media/video/cx18/cx18-dvb.c3
3 files changed, 24 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409.c
index fb301151842..85fba581c5a 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 */
diff --git a/drivers/media/dvb/frontends/s5h1409.h b/drivers/media/dvb/frontends/s5h1409.h
index 070d9743e33..91f2ebd1a53 100644
--- a/drivers/media/dvb/frontends/s5h1409.h
+++ b/drivers/media/dvb/frontends/s5h1409.h
@@ -57,6 +57,13 @@ struct s5h1409_config {
#define S5H1409_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK 2
#define S5H1409_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK 3
u16 mpeg_timing;
+
+ /* HVR-1600 optimizations (to better work with MXL5005s)
+ Note: some of these are likely to be folded into the generic driver
+ after being regression tested with other boards */
+#define S5H1409_HVR1600_NOOPTIMIZE 0
+#define S5H1409_HVR1600_OPTIMIZE 1
+ u8 hvr1600_opt;
};
#if defined(CONFIG_DVB_S5H1409) || (defined(CONFIG_DVB_S5H1409_MODULE) \
diff --git a/drivers/media/video/cx18/cx18-dvb.c b/drivers/media/video/cx18/cx18-dvb.c
index 51a0c33b25b..f402e798e32 100644
--- a/drivers/media/video/cx18/cx18-dvb.c
+++ b/drivers/media/video/cx18/cx18-dvb.c
@@ -71,7 +71,8 @@ static struct s5h1409_config hauppauge_hvr1600_config = {
.qam_if = 44000,
.inversion = S5H1409_INVERSION_OFF,
.status_mode = S5H1409_DEMODLOCKING,
- .mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
+ .mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
+ .hvr1600_opt = S5H1409_HVR1600_OPTIMIZE
};
/*