On 06/03/2015 12:29 PM, Olli Salonen wrote:
I'm seeing the same issue as well. I thought that maybe some recent Si2168 changes did impact this, but it does not seem to be the case. I made a quick test myself. I reverted the latest si2168 patches one by one, but that did not remedy the situation. Anyway, the kernel log does not seem to indicate that the si2168_cmd_execute itself would fail (which is what happens after the I2C error handling patch in case the demod sets the error bit). olli@dl160:~/src/media_tree/drivers/media/dvb-frontends$ git log --oneline si2168.c d4b3830 Revert "[media] si2168: add support for gapped clock" eb62eb1 Revert "[media] si2168: add I2C error handling" 7adf99d [media] si2168: add I2C error handling 8117a31 [media] si2168: add support for gapped clock 17d4d6a [media] si2168: add support for 1.7MHz bandwidth 683e98b [media] si2168: return error if set_frontend is called with invalid para c32b281 [media] si2168: change firmware variable name and type 9b7839c [media] si2168: print chip version dmesg lines when it fails (this is with a card that has worked before): [66661.336898] saa7164[0]: registered device video0 [mpeg] [66661.567295] saa7164[0]: registered device video1 [mpeg] [66661.778660] saa7164[0]: registered device vbi0 [vbi] [66661.778817] saa7164[0]: registered device vbi1 [vbi] [66675.175508] si2168:si2168_init: si2168 2-0064: [66675.187299] si2168:si2168_cmd_execute: si2168 2-0064: cmd execution took 6 ms [66675.194105] si2168:si2168_cmd_execute: si2168 2-0064: cmd execution took 2 ms [OLLI: The result of this I2C cmd must be bogus] [66675.194110] si2168 2-0064: unknown chip version Si2168- [66675.200244] si2168:si2168_init: si2168 2-0064: failed=-22 [66675.213020] si2157 0-0060: found a 'Silicon Labs Si2157-A30' [66675.242856] si2157 0-0060: firmware version: 3.0.5
Okei, so it has been working earlier... Could you enable I2C debugs to see what kind of data that command returns?
What I suspect in first hand is that Windows driver has downloaded firmware to chip and linux driver does it again, but with incompatible firmware, which leads to situation it starts failing. But if that is issue you likely already noted it.
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
