Em 30-06-2012 19:32, Martin Blumenstingl escreveu:
> 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.
>
> Signed-off-by: Martin Blumenstingl <martin.blumensti...@googlemail.com>
> ---
> drivers/media/dvb/ddbridge/ddbridge-core.c | 1 +
> drivers/media/dvb/frontends/drxk.h | 11 ++-
> drivers/media/dvb/frontends/drxk_hard.c | 105
> ++++++++++++++++++++++-------
> drivers/media/dvb/frontends/drxk_hard.h | 1 +
> drivers/media/dvb/ngene/ngene-cards.c | 1 +
> drivers/media/video/em28xx/em28xx-dvb.c | 4 ++
> 6 files changed, 96 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/media/dvb/ddbridge/ddbridge-core.c
> b/drivers/media/dvb/ddbridge/ddbridge-core.c
> index 131b938..ebf3f05 100644
> --- a/drivers/media/dvb/ddbridge/ddbridge-core.c
> +++ b/drivers/media/dvb/ddbridge/ddbridge-core.c
> @@ -578,6 +578,7 @@ static int demod_attach_drxk(struct ddb_input *input)
>
> memset(&config, 0, sizeof(config));
> config.microcode_name = "drxk_a3.mc";
> + config.qam_demod_parameter_count = 4;
> config.adr = 0x29 + (input->nr & 1);
>
> fe = input->fe = dvb_attach(drxk_attach, &config, i2c);
> diff --git a/drivers/media/dvb/frontends/drxk.h
> b/drivers/media/dvb/frontends/drxk.h
> index 9d64e4f..19a8114 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) \
> diff --git a/drivers/media/dvb/frontends/drxk_hard.c
> b/drivers/media/dvb/frontends/drxk_hard.c
> index 8fa28bb..ef146ca 100644
> --- a/drivers/media/dvb/frontends/drxk_hard.c
> +++ b/drivers/media/dvb/frontends/drxk_hard.c
> @@ -5415,12 +5415,59 @@ static int GetQAMLockStatus(struct drxk_state *state,
> u32 *pLockStatus)
> #define QAM_LOCKRANGE__M 0x10
> #define QAM_LOCKRANGE_NORMAL 0x10
>
> +static int QAMDemodulatorCommand(struct drxk_state *state, int
> numberOfParameters)
> +{
> + int status;
> + u16 cmdResult;
> + u16 setParamParameters[4] = { 0, 0, 0, 0 };
> +
> + setParamParameters[0] = state->m_Constellation; /* modulation */
> + setParamParameters[1] = DRXK_QAM_I12_J17; /* interleave mode */
> +
> + if (numberOfParameters == 2) {
> + u16 setEnvParameters[1] = { 0 };
> +
> + if (state->m_OperationMode == OM_QAM_ITU_C)
> + setEnvParameters[0] = QAM_TOP_ANNEX_C;
> + else
> + setEnvParameters[0] = QAM_TOP_ANNEX_A;
> +
> + 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;
> +
> + status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM |
> SCU_RAM_COMMAND_CMD_DEMOD_SET_PARAM,
> + numberOfParameters, setParamParameters, 1,
> &cmdResult);
> + } else if (numberOfParameters == 4) {
> + if (state->m_OperationMode == OM_QAM_ITU_C)
> + setParamParameters[2] = QAM_TOP_ANNEX_C;
> + else
> + setParamParameters[2] = QAM_TOP_ANNEX_A;
> +
> + setParamParameters[3] |= (QAM_MIRROR_AUTO_ON);
> + /* Env parameters */
> + /* check for LOCKRANGE Extented */
> + /* setParamParameters[3] |= QAM_LOCKRANGE_NORMAL; */
> +
> + status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM |
> SCU_RAM_COMMAND_CMD_DEMOD_SET_PARAM,
> + numberOfParameters, setParamParameters, 1,
> &cmdResult);
> + } else {
> + printk(KERN_WARNING "drxk: Unknown QAM demodulator parameter "
> + "count %d\n", numberOfParameters);
> + }
> +
> +error:
> + if (status < 0)
> + printk(KERN_WARNING "drxk: Warning %d on %s\n", status,
> __func__);
> + return status;
> +}
> +
> static int SetQAM(struct drxk_state *state, u16 IntermediateFreqkHz,
> s32 tunerFreqOffset)
> {
> int status;
> - u16 setParamParameters[4] = { 0, 0, 0, 0 };
> u16 cmdResult;
> + int qamDemodParamCount = state->qam_demod_parameter_count;
>
> dprintk(1, "\n");
> /*
> @@ -5472,34 +5519,39 @@ static int SetQAM(struct drxk_state *state, u16
> IntermediateFreqkHz,
> }
> if (status < 0)
> goto error;
> - setParamParameters[0] = state->m_Constellation; /* modulation */
> - setParamParameters[1] = DRXK_QAM_I12_J17; /* interleave mode */
> - if (state->m_OperationMode == OM_QAM_ITU_C)
> - setParamParameters[2] = QAM_TOP_ANNEX_C;
> - else
> - setParamParameters[2] = QAM_TOP_ANNEX_A;
> - setParamParameters[3] |= (QAM_MIRROR_AUTO_ON);
> - /* Env parameters */
> - /* check for LOCKRANGE Extented */
> - /* setParamParameters[3] |= QAM_LOCKRANGE_NORMAL; */
>
> - 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 */
> - if (state->m_OperationMode == OM_QAM_ITU_C)
> - setParamParameters[0] = QAM_TOP_ANNEX_C;
> - else
> - setParamParameters[0] = QAM_TOP_ANNEX_A;
> - status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM |
> SCU_RAM_COMMAND_CMD_DEMOD_SET_ENV, 1, setParamParameters, 1, &cmdResult);
> - if (status < 0)
> - goto error;
> + // Use the 4-parameter if it's requested or we're probing for
> + // the correct command.
Please, don't use C99 comments. They're forbidden at the Linux Kernel.
Also, please check your patches using scripts/checkpatch.pl. It helps
to identify issues like that.
Regards,
Mauro
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
