From: Misbah khan <misbah_khan@engineer.com>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Reading a config file in a driver ....
Date: Fri, 4 Jan 2008 00:36:06 -0800 (PST) [thread overview]
Message-ID: <14612555.post@talk.nabble.com> (raw)
In-Reply-To: <20080103163019.GA4223@lixom.net>
Could you please let me know How in the driver i could be able to read the
file present in sysfs ??? Using init script how should i creat and edit the
file ????
I never had done these hence your suggession could be a better way for me to
learn it .
---Misbah
Olof Johansson-2 wrote:
>
> On Wed, Jan 02, 2008 at 09:03:20PM -0800, Misbah khan wrote:
>>
>> Hi all ....
>>
>> I am writing a LCD driver in which the default configuration for LCD
>> would
>> be loded at the Init . This default configuration if keep in the driver
>> then
>> for a change in default configuration we need to compile the driver which
>> we
>> never want . Hence we want a .config file in /etc/lcd.config dir which
>> could
>> be changed and the next boot will take this configuration as the default
>> configuration.
>>
>> I need to know How to read from the config file in the driver form the
>> dir
>> /etc/lcd.config. The driver would be installed at boot up
>
> The driver/kernel shouldn't read the file directly, if anything you
> should have a userspace tool that reads it and adjusts the driver via
> sysfs or similar. That tool can be run from some of the init scripts,
> or from the ramdisk in case you want to do it early.
>
>
> -Olof
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
>
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prev parent reply other threads:[~2008-01-04 8:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-03 5:03 Reading a config file in a driver Misbah khan
2008-01-03 16:30 ` Olof Johansson
2008-01-03 18:43 ` Carlos Munoz
2008-01-04 8:32 ` Misbah khan
2008-01-04 20:58 ` Control not branching to the instruction present at resetvec i.e 0xfffffffc ravi.rao
2008-01-05 14:19 ` Misbah khan
2008-01-04 8:36 ` Misbah khan [this message]
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