diff options
| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2012-07-05 00:36:55 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-06 21:54:43 +0400 |
| commit | 9e23f50a762c236049b4965a42d86d55fcdbbfb3 (patch) | |
| tree | 1e98cb690824382058e222e9fed4261f3552549d /drivers/media/dvb/frontends/drxk.h | |
| parent | 22a09b439af25fefbe0ebd1c6c2a0d81e923f2f5 (diff) | |
| download | linux-9e23f50a762c236049b4965a42d86d55fcdbbfb3.tar.xz | |
[media] drxk: Make the QAM demodulator command parameters configurable
Currently there are two different implementations (in the firmware) for
the QAM demodulator command: one takes 4 and the other takes 2
parameters. The driver shows an error in dmesg When using the
4-parameter command with firmware that implements the 2-parameter
command. Unfortunately this happens every time when chaning the
frequency (on DVB-C).
This patch simply makes configurable, how many command parameters will
be used. All existing drxk_config instances using the "drxk_a3.mc" were
updated because this firmware is the only loadable firmware where the
QAM demodulator command takes 4 parameters. Some firmwares in the ROM
might also use it. The drxk instances in the em28xx-dvb driver were also
updated to silence the warnings.
If no qam_demod_parameter_count is given in the drxk_config struct, then
the correct number of parameters will be auto-detected.
[mchehab@redhat.com: Fix a small CodingStyle issue at one comment]
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends/drxk.h')
| -rw-r--r-- | drivers/media/dvb/frontends/drxk.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/drxk.h b/drivers/media/dvb/frontends/drxk.h index 9d64e4fea066..d615d7d055a2 100644 --- a/drivers/media/dvb/frontends/drxk.h +++ b/drivers/media/dvb/frontends/drxk.h @@ -20,6 +20,14 @@ * means that 1=DVBC, 0 = DVBT. Zero means the opposite. * @mpeg_out_clk_strength: DRXK Mpeg output clock drive strength. * @microcode_name: Name of the firmware file with the microcode + * @qam_demod_parameter_count: The number of parameters used for the command + * to set the demodulator parameters. All + * firmwares are using the 2-parameter commmand. + * An exception is the "drxk_a3.mc" firmware, + * which uses the 4-parameter command. + * A value of 0 (default) or lower indicates that + * the correct number of parameters will be + * automatically detected. * * On the *_gpio vars, bit 0 is UIO-1, bit 1 is UIO-2 and bit 2 is * UIO-3. @@ -38,7 +46,8 @@ struct drxk_config { u8 mpeg_out_clk_strength; int chunk_size; - const char *microcode_name; + const char *microcode_name; + int qam_demod_parameter_count; }; #if defined(CONFIG_DVB_DRXK) || (defined(CONFIG_DVB_DRXK_MODULE) \ |