[linux-dvb] Kworld DVB-T 210 - dvb tuning problem
Hartmut Hackmann
hartmut.hackmann at t-online.de
Sat Apr 12 00:14:36 CEST 2008
Hi, Tim
timf schrieb:
> hermann pitton wrote:
>> Am Freitag, den 11.04.2008, 00:08 +0200 schrieb Hartmut Hackmann:
>>
>>> HI, Tim
>>>
>>> timf schrieb:
>>>
>>>> Hi Hartmut,
>>>> OK, found some more spare time, but very, very frustrated!
>>>>
>>>> 1) Tried ubuntu 7.04, 7.10, 8.04
>>>> Tried with just modules that exist in kernel (no v4l-dvb)
>>>> Tried v4l-dvb from June 2007 and tried current v4l-dvb
>>>> Tried with/without Hartmut patch - changeset 7376 49ba58715fe0
>>>> Tried with .gpio_config = TDA10046_GP11_I, or .gpio_config =
>>>> TDA10046_GP01_I,
>>>> Tried using configs in saa7134-dvb.c matching tiger, tiger_s,
>>>> pinnacle 310i, twinhan 3056
>>>>
>>>> # Australia / Perth (Roleystone transmitter)
>>>> # T freq bw fec_hi fec_lo mod transmission-mode guard-interval
>>>> hierarchy
>>>> # SBS
>>>> T 704500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE
>>>> # ABC
>>>> T 725500000 7MHz 3/4 NONE QAM64 8k 1/16 NONE
>>>> # Seven
>>>> T 746500000 7MHz 2/3 NONE QAM64 8k 1/16 NONE
>>>> # Nine
>>>> T 767500000 7MHz 3/4 NONE QAM64 8k 1/16 NONE
>>>> # Ten
>>>> T 788500000 7MHz 3/4 NONE QAM64 8k 1/16 NONE
>>>>
>>>> 2) I have these saa7134 cards:
>>>> - pinnacle 310i
>>>> - kworld 210
>>>>
>>>> This cx88 card:
>>>> - dvico DVB-T Pro hybrid (analog tv not work)
>>>>
>>>> - problem only occurs with kworld 210 in linux (works fine in WinXP)
>>>>
>>>> 3) In WinXP, all channels, both analog tv and dvb-t found
>>>>
>>>> 4) In linux, if start dvb-t first, never scans SBS - dmesg1
>>>>
>>>> 5) In linux, if start analog tv first, stop, then start dvb-t, scan
>>>> finds SBS - dmesg2
>>>>
>>>>
>>> a) The pinnacle 310i finds everything?
>>> It has the same chipset, but an almost perfectly handled tuner
>>> chip...
>>> This means that your initial config file is ok...
>>> b) Does this mean that in case 4, all other channels are found?
>>> c) Case 5: This finds everything?
>>> d) What happens if you use the scan data of the pinnacle card?
>>> Does it tune SBS? Does it just take more time to stabilize?
>>> This can be understood.
>>> e) Just to be sure: did you clarify the open point with .antenna_switch
>>> (i think so)
>>> f) the kernel logs are as expected.
>>> <snip>
>>>
>>>
>>>
>>>> 6) Herman mentioned something called a "mode-switch" in the
>>>> archives, but not any description.
>>>>
>>> I guess he meant the switching between analog, radio and dvb-t. This
>>> is the
>>> GPIO handling and card depending.
>>>
>>
>> Tim must have it from when I mentioned the special case of card=87 and
>> 94.
>>
>>
>>>> I tried to find some data sheets for tda8275 tda8290 but only found
>>>> the publicity pdf file from Phillips,
>>>> so at least I can see they go together, so I presume this
>>>> "mode-switch" is coded into those modules.
>>>> But those modules work for all other cards, so now I'm lost again.
>>>>
>>>> What else should I try?
>>>>
>>>>
>>> If my assumptions above are wrong, there is one other chance:
>>> Recently i saw another card that does the (unusual) mode switching
>>> like card 87. So to be sure, you might try to force this card type (be
>>> aware of the antenna inputs, if in doubt, try both.
>>>
>>> Best regards
>>> Hartmut
>>>
>>>
>>
>> For the Medion8800 Quad and CTX948 also showing this issue, needs to
>> tune analog first to have good recepton on DVB-T, they are a little
>> weaker on analog than other cards, but after that on DVB-T, they are as
>> good than known good others.
>>
>> Cheers,
>> Hermann
>>
>>
>>
> Hi Hartmut and Hermann,
>
> a) The pinnacle 310i finds everything?
> It has the same chipset, but an almost perfectly handled tuner chip...
> This means that your initial config file is ok...
>
> Answer - Yes, the non-working remote (and constant unknown key messages)
> is all that is
> wrong with the pinnacle 310i.
> I tested it for your new tda8290 tda8275 patches - didn't I send you the
> results?
> It works fine!
>
> b) Does this mean that in case 4, all other channels are found?
>
> Answer - In linux, if start dvb-t first, never scans SBS
> - yes all other channels are viewable/scannable.
>
> c) Case 5: This finds everything?
>
> Answer - In linux, if start analog tv first, stop, then start dvb-t,
> scan finds SBS
> - yes all channels are viewable/scannable.
>
> d) What happens if you use the scan data of the pinnacle card?
> Does it tune SBS? Does it just take more time to stabilize?
> This can be understood.
>
> Answer - the same answer applies as for b) and c)
>
> e) Just to be sure: did you clarify the open point with .antenna_switch
> (i think so)
>
> Answer - yes that was me being over-enthusiastic - made no difference
> as you pointed out.
>
>
> OK, this modification has achieved, I think success. I can now view/scan
> all channels
> in analog tv or dvb-t in either order.
> That is, I now don't have to start analog tv first, before dvb-t will
> start.
>
> In saa7134- cards.c - no change.
>
> In saa7134-dvb.c:
>
> Remove this:
> ------------------------------------
> static struct tda1004x_config kworld_dvb_t_210_config = {
> .demod_address = 0x08,
> .invert = 1,
> .invert_oclk = 0,
> .xtal_freq = TDA10046_XTAL_16M,
> .agc_config = TDA10046_AGC_TDA827X,
> .gpio_config = TDA10046_GP11_I,
> .if_freq = TDA10046_FREQ_045,
> .i2c_gate = 0x4b,
> .tuner_address = 0x61,
> .antenna_switch= 1,
> .request_firmware = philips_tda1004x_request_firmware
> };
> ------------------------------
>
> Add this:
>
> ------------------------------
> static int kw210_tuner_init(struct dvb_frontend *fe)
> {
> struct saa7134_dev *dev = fe->dvb->priv;
> philips_tda827x_tuner_init(fe);
> /* route TDA8275a AGC input to the channel decoder */
> saa7134_set_gpio(dev, 22, 1);
> return 0;
> }
>
> static int kw210_tuner_sleep(struct dvb_frontend *fe)
> {
> struct saa7134_dev *dev = fe->dvb->priv;
> /* route TDA8275a AGC input to the analog IF chip*/
> saa7134_set_gpio(dev, 22, 0);
> philips_tda827x_tuner_sleep(fe);
> return 0;
> }
>
> static struct tda827x_config kw210_cfg = {
> .tuner_callback = saa7134_tuner_callback,
> .init = kw210_tuner_init,
> .sleep = kw210_tuner_sleep,
> .config = 0
> };
>
> static struct tda1004x_config kworld_dvb_t_210_config = {
> .demod_address = 0x08,
> .invert = 1,
> .invert_oclk = 0,
> .xtal_freq = TDA10046_XTAL_16M,
> .agc_config = TDA10046_AGC_TDA827X,
> .gpio_config = TDA10046_GP11_I,
> .if_freq = TDA10046_FREQ_045,
> .tuner_address = 0x61,
> .request_firmware = philips_tda1004x_request_firmware
> };
> ----------------------------
>
> Change this:
>
> case SAA7134_BOARD_KWORLD_DVBT_210:
> dev->dvb.frontend = dvb_attach(tda10046_attach,
> &kworld_dvb_t_210_config, &dev->i2c_adap);
> if (dev->dvb.frontend) {
> if (dvb_attach(tda827x_attach,dev->dvb.frontend,
> kworld_dvb_t_210_config.tuner_address, &dev->i2c_adap,
> &kw210_cfg) == NULL) {
> wprintk("no tda827x tuner found at addr: %02x\n",
> kworld_dvb_t_210_config.tuner_address);
> }
> }
> break;
> ---------------------------------------------
>
> However, I need you to explain something for me.
>
> There is no difference if I use this:
>
> saa7134_set_gpio(dev, 22, 1);
>
> or this:
>
> saa7134_set_gpio(dev, 21, 1);
>
> I await your guidance, meanwhile I shall apply my
> modification to enable the remote and ensure it
> doesn't have any effect.
>
> Many thanks to you both,
>
> Regards,
> Tim
>
Again progress, excellent!
I think we will need one further interation. If i go through your
changes and comments, i come to the opinion that we will get the same
with less changes. But if i understand this right, its astonishing that your
card worked a bit. But let me go through your last patch again tomorrow -
i am too tired now.
Best regards
Hartmut
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