Re: em28xx: msi Digivox ATSC board id [0db0:8810]

[Antti Palosaari <crope@iki.fi>]

On 12/06/2012 12:33 AM, Matthew Gyurgyik wrote:
> On 12/05/2012 05:01 PM, Antti Palosaari wrote:
>> OK, fine, I was then wrong. I have to say you have a lot of channels
>> over there what I can see from scan result [1]. Those channels which
>> says "tuning failed" are channels where is no transmission and those
>> "filter timeout pid" means there is ta ransmission and demod locks.
>> Here in Finland we have only ~4 MUX DVB-T and maybe other 4 for DVB-T2.
>>
>> It is then actually working quite well from the developer point of
>> view (as demod loses lock when antenna is unplugged). It means tuner
>> and demodular are working but interface (transport stream interface,
>> TS IF) between demod and USB-bridge is still broken.
>>
>> I tried to look again your sniff if I can see what it does just before
>> streaming starts, but unfortunately there is no any mention about
>> those streaming packets (isoc packets where picture stream is going).
>> Did you remove those yourself?
>>
> No I did not remove the the streaming packets. However I did use the
> parse-usbsnoop.php script to generate parsed-usbsnoop.txt. The original
> snooping log is 354M (I'm assuming it has stream data in it).
>
> I have put the entire log on the server ~85MB bzipped:
> http://pyther.net/a/digivox_atsc/UsbSnoop.log.bz2
>
> Let me know if you think I should do another snoop.

It was good snoop. I didn't saw nothing very interesting. But, I think I 
found the reason. Just add that one line writing 0x42 to register 0x0d. 
IIRC I saw earlier it caused that kind of bug...

+static struct em28xx_reg_seq msi_digivox_atsc[] = {
+	{EM2874_R80_GPIO, 0xff, 0xff,  50}, /* GPIO_0=1 */
+	{0x0d,            0xff, 0xff,   0},
+	{EM2874_R80_GPIO, 0xfe, 0xff,   0}, /* GPIO_0=0 */
	{0x0d,            0x42, 0xff,   0},
+	{EM2874_R80_GPIO, 0xbe, 0xff, 135}, /* GPIO_6=0 */
+	{EM2874_R80_GPIO, 0xfe, 0xff, 135}, /* GPIO_6=1 */
+	{EM2874_R80_GPIO, 0x7e, 0xff,  20}, /* GPIO_7=0 */
+	{             -1,   -1,   -1,  -1},
+};

regards
Antti


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