On 10/13/2014 09:44 AM, Nibble Max wrote:
M88RS6000 is the integrated chip, which includes tuner and demod.
Its internal demod is similar with M88DS3103 except some registers definition.
The main different part of this internal demod from others is its clock/pll
generation IP block sitting inside the tuner die.
So clock/pll functions should be configed through its tuner i2c bus, NOT its
demod i2c bus.
The demod of M88RS6000 need the firmware: dvb-demod-m88rs6000.fw
firmware download link:
http://www.dvbsky.net/download/linux/dvbsky-firmware.tar.gz
@@ -250,6 +251,7 @@ static int m88ds3103_set_frontend(struct dvb_frontend *fe)
u16 u16tmp, divide_ratio;
u32 tuner_frequency, target_mclk;
s32 s32tmp;
+ struct m88rs6000_mclk_config mclk_cfg;
dev_dbg(&priv->i2c->dev,
"%s: delivery_system=%d modulation=%d frequency=%d
symbol_rate=%d inversion=%d pilot=%d rolloff=%d\n",
@@ -291,6 +293,26 @@ static int m88ds3103_set_frontend(struct dvb_frontend *fe)
if (ret)
goto err;
+ if (priv->chip_id == M88RS6000_CHIP_ID) {
+ ret = m88ds3103_wr_reg(priv, 0x06, 0xe0);
+ if (ret)
+ goto err;
+ if (fe->ops.tuner_ops.set_config) {
+ /* select main mclk */
+ mclk_cfg.config_op = 0;
+ mclk_cfg.TunerfreqMHz = c->frequency / 1000;
+ mclk_cfg.SymRateKSs = c->symbol_rate / 1000;
+ ret = fe->ops.tuner_ops.set_config(fe, &mclk_cfg);
+ if (ret)
+ goto err;
+ priv->mclk_khz = mclk_cfg.MclkKHz;
+ }
+ ret = m88ds3103_wr_reg(priv, 0x06, 0x00);
+ if (ret)
+ goto err;
+ usleep_range(10000, 20000);
+ }
That looks odd and also ugly. You pass some values from demod to tuner
using set_config callback. Tuner driver can get symbol_rate and
frequency just similarly from property cache than demod. Why you do it
like that?
Clock is provided by tuner as you mention. I see you use that to pass
used clock frequency from tuner to demod. This does not look nice and I
would like to see clock framework instead. Or calculate clock on both
drivers. Does the demod clock even needs to be changed? I think it is
only TS stream size which defines used clock frequency - smaller the TS
bitstream, the smaller the clock frequency needed => optimizes power
consumption a little. But TS clock is calculated on tuner driver in any
case?
regards
Antti
--
http://palosaari.fi/
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