public inbox for linux-media@vger.kernel.org
 help / color / mirror / Atom feed
From: Daniel Exner <dex@dragonslave.de>
To: Linux Media Mailing List <linux-media@vger.kernel.org>
Cc: dex@dragonslave.de
Subject: Re: Terratec Cinergy T XS Firmware (Kernel 3.14.1)
Date: Fri, 25 Apr 2014 21:40:11 +0200	[thread overview]
Message-ID: <535ABA1B.8010701@dragonslave.de> (raw)
In-Reply-To: <20140424182626.47f5f01e@samsung.com>

[-- Attachment #1: Type: text/plain, Size: 1260 bytes --]

Hi,

Am 24.04.2014 23:26, schrieb Mauro Carvalho Chehab:
> Em Thu, 24 Apr 2014 15:24:20 -0400
> Devin Heitmueller <dheitmueller@kernellabs.com> escreveu:
[...]

> What can do, instead, is to sniff the traffic at the USB port, and get
> the proper GPIO, XCLK and I2C speed settings for this device.
> 
> My suggestion is to either run it on a QEMU VM machine, redirecting
> the USB device to the VM and sniffing the traffic on Linux, or to
> use some USB snoop software.
> 
> Take a look at: http://linuxtv.org/wiki/index.php/Bus_snooping/sniffing
> 
> We have a script that parses em28xx traffic, converting them into
> register writes. All you need to do is to sniff the traffic and check
> what GPIO registers are needed to reset the device.
> 
> Then, add the corresponding data at em28xx-cards.c.


Ok, I managed to setup a VBox with "TheOtherOS" and usbmon and sniffed
some traffic when I (virtually) plugged in the device.

The file is (compressed) about ~620 KiB.

I am honest: I have no clue what I sniffed or how I should read GPIO
registers from there.

If anyone is interested in helping me I would send the file directly.

Greetings
Daniel
-- 
Daniel Exner
Public-Key: https://www.dragonslave.de/pub_key.asc


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 901 bytes --]

      reply	other threads:[~2014-04-25 19:40 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-23 20:34 Terratec Cinergy T XS Firmware (Kernel 3.14.1) Daniel Exner
2014-04-23 20:42 ` Devin Heitmueller
2014-04-23 20:50   ` Daniel Exner
2014-04-24 11:29     ` Mauro Carvalho Chehab
2014-04-24 19:09       ` Daniel Exner
2014-04-24 19:24         ` Devin Heitmueller
2014-04-24 21:26           ` Mauro Carvalho Chehab
2014-04-25 19:40             ` Daniel Exner [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=535ABA1B.8010701@dragonslave.de \
    --to=dex@dragonslave.de \
    --cc=linux-media@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox