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From: Antti Palosaari <crope@iki.fi>
To: Malcolm Priestley <tvboxspy@gmail.com>,
	David Howells <dhowells@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org
Subject: Re: [PATCH 2/2] ts2020: Provide DVBv5 API signal strength
Date: Wed, 03 Jun 2015 14:13:25 +0300	[thread overview]
Message-ID: <556EE155.1000508@iki.fi> (raw)
In-Reply-To: <55677568.4070603@gmail.com>

On 05/28/2015 11:07 PM, Malcolm Priestley wrote:
> On 28/05/15 11:08, David Howells wrote:
>> Malcolm Priestley <tvboxspy@gmail.com> wrote:
>>
>>> Statistics polling can not be done by lmedm04 driver's implementation of
>>> M88RS2000/TS2020 because I2C messages stop the devices demuxer.

I did make tests (using that same lme2510 + rs2000 device) and didn't 
saw the issue TS was lost. Could test and and tell me how to reproduce it?
Signal strength returned was quite boring though, about same value all 
the time, but it is different issue...

>>>
>>> So any polling must be a config option for this driver.
>>
>> Ummm...  I presume a runtime config option is okay.
>
> Yes, also, the workqueue appears not to be initialized when using the
> dvb attached method.
>
>>
>> Also, does that mean that the lmedm04 driver can't be made compatible
>> with the
>> DVBv5 API?
>
> No, the driver will have to implement its own version. It doesn't need a
> polling thread it simply gets it directly from its interrupt urb buffer.

I assume lme2510 firmware will read signal strength from rs2000 and it 
is returned then directly by USB interface.

regards
Antti

-- 
http://palosaari.fi/

  parent reply	other threads:[~2015-06-03 11:13 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-26 15:04 [PATCH 1/2] TS2020: Calculate tuner gain correctly David Howells
2015-05-26 15:04 ` [PATCH 2/2] ts2020: Provide DVBv5 API signal strength David Howells
2015-05-26 18:58   ` Malcolm Priestley
2015-05-28 10:08     ` David Howells
2015-05-28 20:07       ` Malcolm Priestley
2015-06-03 10:17         ` David Howells
2015-06-03 15:15           ` Malcolm Priestley
2015-06-03 16:37             ` David Howells
2015-06-03 16:43               ` Antti Palosaari
2015-06-03 17:04                 ` Malcolm Priestley
2015-06-03 17:15                 ` David Howells
2015-06-03 16:44               ` Malcolm Priestley
2015-06-03 11:13         ` Antti Palosaari [this message]
2015-06-03 15:57           ` Malcolm Priestley
2015-06-03 11:35     ` [PATCH] ts2020: Allow stats polling to be suppressed David Howells
2015-06-03 18:33       ` Malcolm Priestley

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