diff options
| author | Devin Heitmueller <dheitmueller@kernellabs.com> | 2009-10-27 23:33:21 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:41:22 -0200 |
| commit | af5c8e1523edf792f57ec938aef9423783af25e1 (patch) | |
| tree | 7201a2e68340906dc2dc0dbe963332fbeac5eaf0 /drivers/media/dvb/frontends | |
| parent | f57b17c3956f2e1e70f63dd2ed8088b582f3915e (diff) | |
V4L/DVB (13329): s5h1409: provide HVR-1600 specific optimizations
Perform some optimization of the register configuration based on a trace
of the HVR-1600 Windows i2c traffic (and consultation with Steven Toth).
Note that some of these values may be able to be moved into the common driver,
but I am holding off on that until they can be tested with other boards.
This work was sponsored by ONELAN Limited.
Cc: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends')
| -rw-r--r-- | drivers/media/dvb/frontends/s5h1409.c | 15 | ||||
| -rw-r--r-- | drivers/media/dvb/frontends/s5h1409.h | 7 |
2 files changed, 22 insertions, 0 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) \ |