netdev - Re: [PATCH v2 09/13] can: pruss CAN driver.

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Message-ID: <1F33D30F9B2D47ECA80CEC807A6C0727@subhasishg>
Date:	Mon, 14 Feb 2011 14:15:06 +0530
From:	"Subhasish Ghosh" <subhasish@...tralsolutions.com>
To:	"Wolfgang Grandegger" <wg@...ndegger.com>
Cc:	"Kurt Van Dijck" <kurt.van.dijck@....be>,
	<davinci-linux-open-source@...ux.davincidsp.com>,
	<linux-arm-kernel@...ts.infradead.org>, <m-watkins@...com>,
	<nsekhar@...com>, <sachi@...tralsolutions.com>,
	"open list:CAN NETWORK DRIVERS" <socketcan-core@...ts.berlios.de>,
	"open list:CAN NETWORK DRIVERS" <netdev@...r.kernel.org>,
	"open list" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 09/13] can: pruss CAN driver.

That is correct, we receive only pre-programmed CAN ids and "all" or "range" 
implementation is not there in the PRU firmware.
Will check the sysfs option and update.

--------------------------------------------------
From: "Wolfgang Grandegger" <wg@...ndegger.com>
Sent: Monday, February 14, 2011 12:53 PM
To: "Subhasish Ghosh" <subhasish@...tralsolutions.com>
Cc: "Kurt Van Dijck" <kurt.van.dijck@....be>; 
<davinci-linux-open-source@...ux.davincidsp.com>; 
<linux-arm-kernel@...ts.infradead.org>; <m-watkins@...com>; 
<nsekhar@...com>; <sachi@...tralsolutions.com>; "open list:CAN NETWORK 
DRIVERS" <socketcan-core@...ts.berlios.de>; "open list:CAN NETWORK DRIVERS" 
<netdev@...r.kernel.org>; "open list" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 09/13] can: pruss CAN driver.

> On 02/14/2011 05:54 AM, Subhasish Ghosh wrote:
>> Hello,
>>
>> I had a discussion regarding this with Wolfgang:
>>
>> http://www.mail-archive.com/socketcan-users@lists.berlios.de/msg00324.html
>>
>> The problem here is that we must configure the mailbox ID's and this
>> support is not available in the socketCan sub-system.
>
> To understand you correctly. A mailbox (or message object) can *only*
> receive messages with the pre-programmed CAN id? Isn't there a chance to
> receive all or a range of CAN ids? That's a very unusual piece of
> hardware. Anyway, using kernel configuration parameters to define the
> CAN id's would be the less flexible method. The user will not have a
> chance to change them at run-time. Using SysFS files would already be
> much better.
>
> Wolfgang. 

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