Re: HVR-930C DVB-T mode report

[Mauro Carvalho Chehab <mchehab@redhat.com>]

On 08-12-2011 12:00, Fredrik Lingvall wrote:
> On 12/08/11 11:12, Mauro Carvalho Chehab wrote:
>>> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
>>> Scanning 7MHz frequencies...
>>> 177500: (time: 00:00)
>>> 184500: (time: 00:03)
>>>
>>> [...]
>>> 834000: (time: 02:46) (time: 02:48)
>>> 842000: (time: 02:50)
>>> 850000: (time: 02:52) (time: 02:55)
>>> 858000: (time: 02:56) (time: 02:58)
>>>
>>> ERROR: Sorry - i couldn't get any working frequency/transponder
>>> Nothing to scan!!
>>
>>
>> With regards to Italy, w_scan does something different than scan. The auto-italy
>> table used by scan tries several channels with both 8MHz and 7MHz, while w_scan
>> only tries 7MHz for VHF. This might explain the issue, if you're still able to
>> scan/tune with scan and if you have a good antenna.
>>>
>>>
>>> Regards
>>>
>>> Eddi
>>
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>
> Are there similar problems while scanning DVB-C nets with w_scan?
>
> And, is there a "scan everything" table for dvbscan?

No. Both w_scan/dvbscan get the same channels, and they match the channels
available at the STB and with other boards.

Btw, drivers/media/common/tuners/xc5000.c doesn't support 7MHz for DVB-T:

		case BANDWIDTH_7_MHZ:
			printk(KERN_ERR "xc5000 bandwidth 7MHz not supported\n");
			return -EINVAL;

This may explain why you're getting so few channels on it. Only channels marked as
8MHz will be tuned.

I _suspect_ that:
		case BANDWIDTH_7_MHZ:
		case BANDWIDTH_8_MHZ:
			priv->bandwidth = BANDWIDTH_8_MHZ;
			priv->video_standard = DTV8;
			priv->freq_hz = params->frequency - 2750000;
			break;

would be the right thing to do.

Regards,
Mauro