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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-10 14:33:29 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 17:55:51 -0300 |
| commit | 5eee2bb270e34b2e8b245838faef3f9455c69ce6 (patch) | |
| tree | 5db5785efe5d13566f598246394d6dca59ee3fc1 | |
| parent | 7558977a4ade512648bdfcc5f74dfffd7511d46f (diff) | |
| download | linux-5eee2bb270e34b2e8b245838faef3f9455c69ce6.tar.bz2 | |
[media] drxk: Add a fallback method for QAM parameter setting
The QAM standard is set using this scu_command:
SCU_RAM_COMMAND_STANDARD_QAM |
SCU_RAM_COMMAND_CMD_DEMOD_SET_PARAM
The driver implements a version that has 4 parameters, however,
Terratec H5 needs to break this into two separate commands, otherwise,
DVB-C doesn't work.
With this fix, scan is now properly working and getting the
channel list:
>>> tune to: 609000000:INVERSION_AUTO:5217000:FEC_3_4:QAM_256
>>> tuning status == 0x00
>>> tuning status == 0x07
>>> tuning status == 0x1f
0x0093 0x0026: pmt_pid 0x0758 (null) -- SporTV2 (running, scrambled)
0x0093 0x0027: pmt_pid 0x0748 (null) -- SporTV (running, scrambled)
0x0093 0x0036: pmt_pid 0x0768 (null) -- FX (running, scrambled)
0x0093 0x0052: pmt_pid 0x0788 (null) -- The History Channel (running, scrambled)
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/dvb/frontends/drxk_hard.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/drxk_hard.c b/drivers/media/dvb/frontends/drxk_hard.c index 5745f526f391..f74a17641278 100644 --- a/drivers/media/dvb/frontends/drxk_hard.c +++ b/drivers/media/dvb/frontends/drxk_hard.c @@ -5389,7 +5389,7 @@ static int SetQAM(struct drxk_state *state, u16 IntermediateFreqkHz, { int status; u8 parameterLen; - u16 setEnvParameters[5]; + u16 setEnvParameters[5] = { 0, 0, 0, 0, 0 }; u16 setParamParameters[4] = { 0, 0, 0, 0 }; u16 cmdResult; @@ -5456,9 +5456,25 @@ static int SetQAM(struct drxk_state *state, u16 IntermediateFreqkHz, setParamParameters[1] = DRXK_QAM_I12_J17; /* interleave mode */ status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_SET_PARAM, 4, setParamParameters, 1, &cmdResult); + if (status < 0) { + /* Fall-back to the simpler call */ + setParamParameters[0] = QAM_TOP_ANNEX_A; + if (state->m_OperationMode == OM_QAM_ITU_C) + setEnvParameters[0] = QAM_TOP_ANNEX_C; /* Annex */ + else + setEnvParameters[0] = 0; + + status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_SET_ENV, 1, setEnvParameters, 1, &cmdResult); if (status < 0) goto error; + setParamParameters[0] = state->m_Constellation; /* constellation */ + setParamParameters[1] = DRXK_QAM_I12_J17; /* interleave mode */ + + status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_SET_PARAM, 2, setParamParameters, 1, &cmdResult); + } + if (status < 0) + goto error; /* STEP 3: enable the system in a mode where the ADC provides valid signal setup constellation independent registers */ |