Hey, that's your problem :] Driver development is all the time resolving
this kind of issues and you really need to resolve those yourself.
You will need to get I2C communication working with all the chips. First
si2168 demod and after it answers to I2C you will need to get connection
to Si2157 tuner. After both of those are answering you could try to get
tuning tests to see if demod locks. After demod locks you know tuner is
working and also demod is somehow working. If demod lock but there is no
picture you know problem is TS interface. Try different TS settings for
both USB-bridge and demod - those should match. If it does not starts
working then you have to look sniffs and start replacing driver code
with data from sniffs to until it starts working => problematic setting
is found.
regards
Antti
On 07/10/2016 12:18 AM, Oleh Kravchenko wrote:
Hello!
I'm started playing i2c, but stuck with unknown error for me - 32 (EPIPE?):
[ 5651.958763] cx231xx #0 at cx231xx_i2c_xfer: write stop addr=0x60
len=15: c0 00 00 00 00 01 01 01 01 01 01 02 00 00 01
[ 5651.958774] cx231xx #0: (pipe 0x80001000): OUT: 40 02 21 c0 00 00
0f 00
[ 5651.958775] >>> c0 00 00 00 00 01 01 01 01 01 01 02 00 00 01FAILED!
[ 5651.959110] cx231xx 1-2:1.1: cx231xx_send_usb_command: failed with
status --32
[ 5651.959111] cx231xx #0 at cx231xx_i2c_xfer: ERROR: -32
How this error can be fixed? :)
On 04.07.16 21:47, Antti Palosaari wrote:
Hello
On 07/04/2016 09:38 PM, Oleh Kravchenko wrote:
Hello Antti!
I started reverse-engineering of my new TV tuner "Evromedia USB Full
Hybrid Full HD" and discovered that start sequence is different from
si2157.c:
i2c_read_C1
1 \xFE
i2c_write_C0
15 \xC0\x00\x00\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01
Do you familiar with this revision?
Should I merge my changes to si2158.c?
Or define another driver?
According to chip markings those are tuner Si2158-A20 and demod
Si2168-A30. Both are supported already by si2157 and si2168 drivers.
Difference is just some settings. You need to identify which setting is
wrong and add that to configuration options. It should be pretty easy to
find it from the I2C dumps and just testing.
regards
Antti
--
http://palosaari.fi/
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
