[linux-dvb] some questions on cx23885/xc3028
Ronald DELOBEL
ronald.delobel at club-internet.fr
Mon Dec 24 18:37:20 CET 2007
On Sun, 23 Dec 2007 16:53:03 -0500
Steven Toth <stoth at linuxtv.org> wrote:
> Ronald DELOBEL wrote:
> > Hi,
> >
> > I have bought a tv/dvb-t card which is unsupported at this time, this
> > is a leadtek winfast PxDVR 3200 H.
> > Product summary (as far as i can tell): cx23885 bridge, cx23417 encoder,
> > xc3028 tuner, zl10353 demod.
> >
> > I have looked around the v4l-dvb tree, and finally got some results
> > today (ok, actually, I have just copied the parts I suspected to match
> > the card, I don't *really* now what I am doing).
>
> Welcome, you've come to the right place to learn. :)
>
> I would say this, the very best you can hope to achieve right now with
> the card is to get DVB-T working. This should easily be acheivable.
> Drivers for the analog parts are under development.
>
> >
> > So I have some questions:
> >
> > Shouldn't the tuner (0xc2) be shown by the i2c scan?
>
> No. This does not surprise me.
>
> The tuner will not show up in an i2c scan if it's being held
> electrically in reset using a GPIO between the '885 and the tuner, or if
> it's located behind an I2C gate which is closed on the 353.
>
> The best way to determine GPIO configuration is described below.
I have followed your advice and created a small wiki page
http://www.linuxtv.org/wiki/index.php/Leadtek_Winfast_PxDVR_3200_H
with the 3 regspy's dumps (external links because I can't upload *.txt
files or didn't found how)
>
> > I've tried w_scan, unsucceffuly :
> > w_scan version 20070909
> > Info: using DVB adapter auto detection.
> > Found DVB-T frontend. Using adapter /dev/dvb/adapter0/frontend0
> > -_-_-_-_ Getting frontend capabilities-_-_-_-_
> > frontend Zarlink ZL10353 DVB-T supports
> > INVERSION_AUTO
> > QAM_AUTO
> > TRANSMISSION_MODE_AUTO
> > GUARD_INTERVAL_AUTO
> > HIERARCHY_AUTO
> > FEC_AUTO
> >
> > the frontend seems to be correctly recognized (no?) but a full scan show nothing.
> > In the dmesg output there is nothing about firmware loading, doesn't xc3028 need one?
>
> Yes, the 3028 expects to load firmware, but the 3028 driver is lot being
> attached - so you're not seeing errors - yet.
>
> > About firmware, I have two *.rom files which I got from windows install: wf23885C.rom and wf416enc.rom,
> > maybe xc2028 one is in this first, how to extract/use it?
>
> No, neither of these files are for the 3028. The first is for the
> bridge, but you don't need it yet. The second is for the encoder, and
> you don't need that yet either.
>
> The 3028 firmware will be compiled directly into the leadtek driver.
> However, that firmware is available on the web for download in other
> places. I think the wiki at linuxtv.org describes this. If not, ask here.
The v4l wiki doesn't provide much informations about this, the em2880
page redirects me to http://mcentral.de/wiki/index.php/Em2880 which I
already know (I own a A16D card too), should I download firmwares from
there?
There is a firmware-tool in v4l2-apps/util/xc3028-firmware/ but I don't
know what to provide to it.
> > Last question: how can I know what to use portb or portc?
>
> This will be answered along with my GPIO reference below.
I think that's portc : VID_C_INT_MSK is 00011101 for digital whereas
the same value is affected to VID_A_INT_MSK when in analog, am I on
right track?
> >
> > The following is dmesg output after modprobe cx23885 and tveeprom:
> >
> > cx23885 driver version 0.0.1 loaded
> > ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 18 (level, low) -> IRQ 18
> > CORE cx23885[0]: subsystem: 107d:6681, board: Leadtek Winfast PxDVR
> > 3200 H [card=7,autodetected] cx23885[0]: i2c bus 0 registered
> > cx23885[0]: i2c scan: found device @ 0x1e [???]
> > cx23885[0]: i2c scan: found device @ 0xa0 [eeprom]
> > cx23885[0]: i2c bus 1 registered
> > cx23885[0]: i2c bus 2 registered
> > cx23885[0]: i2c scan: found device @ 0x66 [???]
> > cx23885[0]: i2c scan: found device @ 0x88 [cx25837]
> > cx23885[0]: i2c scan: found device @ 0x98 [???]
> > tveeprom 1-0050: full 256-byte eeprom dump:
> > tveeprom 1-0050: 00: 08 00 18 03 00 00 03 ff 20 00 13 00 00 00 00 00
> > tveeprom 1-0050: 10: 20 00 13 00 00 00 00 00 20 00 13 00 00 00 00 00
> > tveeprom 1-0050: 20: 20 00 13 00 00 00 00 00 20 00 13 00 00 00 00 00
> > tveeprom 1-0050: 30: 20 00 13 00 00 00 00 00 20 00 13 00 00 00 00 13
> > tveeprom 1-0050: 40: 20 00 13 00 00 00 00 00 20 00 13 00 00 00 00 00
> > tveeprom 1-0050: 50: 08 00 18 03 00 00 03 9d 0c 03 05 00 0e 01 00 00
> > tveeprom 1-0050: 60: 20 00 13 00 00 00 00 00 50 03 05 00 04 80 00 08
> > tveeprom 1-0050: 70: 2c 00 05 00 7d 10 81 66 0c 03 05 80 0e 01 00 00
> > tveeprom 1-0050: 80: 82 01 00 22 78 00 00 00 ff ff ff ff ff ff ff ff
> > tveeprom 1-0050: 90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > tveeprom 1-0050: a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > tveeprom 1-0050: b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > tveeprom 1-0050: c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > tveeprom 1-0050: d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > tveeprom 1-0050: e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > tveeprom 1-0050: f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > cx23885[0]: cx23885 based dvb card
> > xc2028 1-0061: type set to XCeive xc2028/xc3028 tuner
> > DVB: registering new adapter (cx23885[0])
> > DVB: registering frontend 0 (Zarlink ZL10353 DVB-T)...
> > cx23885[0]/0: found at 0000:02:00.0, rev: 2, irq: 18, latency: 0, mmio:
> > 0xfda00000
> > PCI: Setting latency timer of device 0000:02:00.0 to 64
> >
> > And result of messing around:
> >
> > diff -r 3683fd95d4ad linux/drivers/media/video/cx23885/cx23885-cards.c
> > --- a/linux/drivers/media/video/cx23885/cx23885-cards.c Sun Dec 23 08:15:42 2007 -0200
> > +++ b/linux/drivers/media/video/cx23885/cx23885-cards.c Sun Dec 23 20:57:57 2007 +0100
> > @@ -122,6 +122,22 @@ struct cx23885_board cx23885_boards[] =
> > .name = "Hauppauge WinTV-HVR1500",
> > .portc = CX23885_MPEG_DVB,
> > },
> > + [CX23885_BOARD_LEADTEK_WINFAST3200] = {
> > + .name = "Leadtek Winfast PxDVR 3200 H",
> > + .portc = CX23885_MPEG_DVB,
> > + /*
> > + .input = {{
> > + .type = CX23885_VMUX_TELEVISION,
> > + .vmux = 2,
> > + },{
> > + .type = CX23885_VMUX_COMPOSITE1,
> > + .vmux = 1,
> > + },{
> > + .type = CX23885_VMUX_SVIDEO,
> > + .vmux = 3,
> > + }},
> > + */
> > + },
> > };
>
> For the time being, you don't need to define .input, they are not used
> in the digital driver - although they will be used by analog.
Ok, I leave this part aside for the moment.
> > const unsigned int cx23885_bcount = ARRAY_SIZE(cx23885_boards);
> >
> > @@ -161,7 +177,11 @@ struct cx23885_subid cx23885_subids[] =
> > .subvendor = 0x0070,
> > .subdevice = 0x7717,
> > .card = CX23885_BOARD_HAUPPAUGE_HVR1500,
> > - },
> > + },{
> > + .subvendor = 0x107d,
> > + .subdevice = 0x6681,
> > + .card = CX23885_BOARD_LEADTEK_WINFAST3200,
> > + }
> > };
> > const unsigned int cx23885_idcount = ARRAY_SIZE(cx23885_subids);
> >
> > @@ -250,6 +270,9 @@ void cx23885_gpio_setup(struct cx23885_d
> >
> > cx_set(GP0_IO, 0x00040004); /* Bring the tuner out of reset */
> > break;
> > + case CX23885_BOARD_LEADTEK_WINFAST3200:
> > + cx_set(GP0_IO, 0x00040004);
> > + break;
> > }
> > }
>
> This is a guess, right? It's a bad idea to guess with GPIO's unless you
> know what you're doing, you could be driving current into a part that
> doesn't like it. This can break hardware.
Yes this was a guess based on the content of the inf file:
HKR,"DriverData","tuner_reset_gpio_bit", 0x00010001, 0x02, 0x00, 0x00,
0x00
and the following in cx23885-cards.c:
/* GPIO-0 cx24227 demodulator */
/* GPIO-2 xc3028 tuner */
/* Put the parts into reset */
cx_set(GP0_IO, 0x00050000);
cx_clear(GP0_IO, 0x00000005);
for me this was 2^0 2^2, and since there is only an xc3028 on my card I
have tried 2^2 alone.
Hopefully this didn't break anything, but now I know it's better not to
play with that.
Now, I obtained GP0_IO value (00070404) from RegSpy, could it be as
simple as using this 'as is'?
[....]
>>
> > Thanks for any help.
> >
>
> The first thing you need to do is download this project and install it
> on a windows box with your leadtek card:
>
> http://deinterlace.sourceforge.net/
>
> Then download this:
>
> http://www.steventoth.net/anonfiles/RegSpy.exe
>
> Start the regspy tool and then start the leadtek Tv application and
> switch to DVB-T mode, make sure video is playing then use the regspy
> tool to dump the register contents to file.
>
> Then switch to analog mode, ensure the encoder is running and use regspy
> to dump the register values again, to another file.
>
> Finally, stop the TV application, and dump the register values again.
>
> Perhaps you could create a page on the WIKI and upload these files?
> Among other things, these files will us what GPIO values should be used,
> and whether it's using portb or c for DVB-T.
>
> Please ensure all email traffic is posted to this list.
>
> Regards,
>
> Steve
>
Thanks to read this until the end.
Merry christmas to everybody.
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