On Wed, Oct 27, 2010 at 01:24:15PM -0600, Azael Avalos wrote: > Yes, actually the ACPI video driver does a better job of detecting the > video device, > so perhaps something like the following would be better IMHO for at least the > backlight: Yeah, that looks better. > Is there an ACPI function that let's us query the display brightness? > Because TOS1900 devices lack the HCI method to query the LCD status, > and thus the proc interface will be useless, that is, if a userland (or any > other) application is using it. Ignore the proc interface. Everyone should be using sysfs now. _BQC is the standardised ACPI function for this, but it's not always implemented. > > Ugh. Use i8042_install_filter instead, and just look at the raw i8042 > > stream. That'll avoid the ugly strncmp for the device names in order to > > find the right device. > > > > Can you point me to some documents (if any) or even pieces of code > that I can look at. > > I've tried using the i8042_install_filter function, but I haven't had > any luck so far, > or perhaps I'm using it in wrong, due to my limited kernel knowledge. Take a look at the dell-laptop driver in drivers/platform/x86. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
