Olof Johansson 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. > What I've done in the past is to use module_param() to define variables that get set when the module is loaded. Then all you need to do is edit the /etc/modules file and change the parameter value. However, this technique is only efficient if only a few parameters will ever change. If you need to change more than a few parameters, Olof's suggestion would be preferred.
Carlos _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
