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.blumenstingl@xxxxxxxxxxxxxx>
---
drivers/media/dvb/ddbridge/ddbridge-core.c | 1 +
drivers/media/dvb/frontends/drxk.h | 11 ++-
drivers/media/dvb/frontends/drxk_hard.c | 112 ++++++++++++++++++++++-------
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, 104 insertions(+), 26 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..d615d7d 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..07b362f 100644
--- a/drivers/media/dvb/frontends/drxk_hard.c
+++ b/drivers/media/dvb/frontends/drxk_hard.c
@@ -5415,12 +5415,67 @@ 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 +5527,40 @@ 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. */
+ if (state->qam_demod_parameter_count == 4
+ || !state->qam_demod_parameter_count) {
+ qamDemodParamCount = 4;
+ status = QAMDemodulatorCommand(state, qamDemodParamCount);
+ }
- setParamParameters[0] = state->m_Constellation; /* modulation */
- 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);
+ /* Use the 2-parameter command if it was requested or if we're
+ * probing for the correct command and the 4-parameter command
+ * failed. */
+ if (state->qam_demod_parameter_count == 2
+ || (!state->qam_demod_parameter_count && status < 0)) {
+ qamDemodParamCount = 2;
+ status = QAMDemodulatorCommand(state, qamDemodParamCount);
}
- if (status < 0)
+
+ if (status < 0) {
+ dprintk(1, "Could not set demodulator parameters. Make "
+ "sure qam_demod_parameter_count (%d) is correct for "
+ "your firmware (%s).\n",
+ state->qam_demod_parameter_count,
+ state->microcode_name);
goto error;
+ } else if (!state->qam_demod_parameter_count) {
+ dprintk(1, "Auto-probing the correct QAM demodulator command "
+ "parameters was successful - using %d parameters.\n",
+ qamDemodParamCount);
+
+ /* One of our commands was successful. We don't need to
+ /* auto-probe anymore, now that we got the correct command. */
+ state->qam_demod_parameter_count = qamDemodParamCount;
+ }
/*
* STEP 3: enable the system in a mode where the ADC provides valid
@@ -6502,6 +6563,7 @@ struct dvb_frontend *drxk_attach(const struct drxk_config *config,
state->demod_address = adr;
state->single_master = config->single_master;
state->microcode_name = config->microcode_name;
+ state->qam_demod_parameter_count = config->qam_demod_parameter_count;
state->no_i2c_bridge = config->no_i2c_bridge;
state->antenna_gpio = config->antenna_gpio;
state->antenna_dvbt = config->antenna_dvbt;
diff --git a/drivers/media/dvb/frontends/drxk_hard.h b/drivers/media/dvb/frontends/drxk_hard.h
index f417797..6bb9fc4 100644
--- a/drivers/media/dvb/frontends/drxk_hard.h
+++ b/drivers/media/dvb/frontends/drxk_hard.h
@@ -353,6 +353,7 @@ struct drxk_state {
const char *microcode_name;
struct completion fw_wait_load;
const struct firmware *fw;
+ int qam_demod_parameter_count;
};
#define NEVER_LOCK 0
diff --git a/drivers/media/dvb/ngene/ngene-cards.c b/drivers/media/dvb/ngene/ngene-cards.c
index 7539a5d..72ee8de 100644
--- a/drivers/media/dvb/ngene/ngene-cards.c
+++ b/drivers/media/dvb/ngene/ngene-cards.c
@@ -217,6 +217,7 @@ static int demod_attach_drxk(struct ngene_channel *chan,
memset(&config, 0, sizeof(config));
config.microcode_name = "drxk_a3.mc";
+ config.qam_demod_parameter_count = 4;
config.adr = 0x29 + (chan->number ^ 2);
chan->fe = dvb_attach(drxk_attach, &config, i2c);
diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c
index f8ffe10..a16531f 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -315,6 +315,7 @@ static struct drxk_config terratec_h5_drxk = {
.single_master = 1,
.no_i2c_bridge = 1,
.microcode_name = "dvb-usb-terratec-h5-drxk.fw",
+ .qam_demod_parameter_count = 2,
};
static struct drxk_config hauppauge_930c_drxk = {
@@ -323,6 +324,7 @@ static struct drxk_config hauppauge_930c_drxk = {
.no_i2c_bridge = 1,
.microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
.chunk_size = 56,
+ .qam_demod_parameter_count = 2,
};
struct drxk_config terratec_htc_stick_drxk = {
@@ -331,6 +333,7 @@ struct drxk_config terratec_htc_stick_drxk = {
.no_i2c_bridge = 1,
.microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
.chunk_size = 54,
+ .qam_demod_parameter_count = 2,
/* Required for the antenna_gpio to disable LNA. */
.antenna_dvbt = true,
/* The windows driver uses the same. This will disable LNA. */
@@ -347,6 +350,7 @@ static struct drxk_config pctv_520e_drxk = {
.adr = 0x29,
.single_master = 1,
.microcode_name = "dvb-demod-drxk-pctv.fw",
+ .qam_demod_parameter_count = 2,
.chunk_size = 58,
.antenna_dvbt = true, /* disable LNA */
.antenna_gpio = (1 << 2), /* disable LNA */
--
1.7.11.1
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