lkml.org 
[lkml]   [2006]   [Dec]   [9]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateSat, 9 Dec 2006 12:59:58 +0100
FromHolger Macht <>
SubjectRe: [patch 2/3] acpi: Add a docked sysfs file to the dock driver.
On Mon 04. Dec - 14:49:58, Kristen Carlson Accardi wrote:
> From: brandon@ifup.org
> 
> Add 2 sysfs files for user interface.
> 1) docked - 1/0 (read only) - indicates whether the software believes the 
> laptop is docked in a docking station.
> 2) undock - (write only) - writing to this file causes the software to
> initiate an undock request to the firmware. 

Thanks for doin this!

However, the function dock_event(...) still contains this comment:

	/*
	 * we don't do events until someone tells me that
	 * they would like to have them.
	 */
Well, I like to have them ;-)

The sysfs exports are more or less useless without events. When the dock
driver is loaded, you get a platform device below /sys. But you never know
if there will ever be a docking station connected to your
system. Userspace caring about this will have to poll the 'docked' file,
which is obviously bad.

Thanks,
	Holger
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-12-09 12:03    [from the cache]
©2003-2008