(please CC me in any replies). There is some interest into adding Linux support to control the MIC muted LED in thinkpads, as it appears that Lenovo did not go the safer (and OS-agnostic) way and did not slave the MIC to an EC-controlled analog switch as they do for the speakers. Still, I do not like the idea of doing this LED control through userspace. I'd prefer to do that just as a last resort: if some hardware has the UI to notify the user when a MIC is active, we should strive to make that UI something the user can trust not to be so easily subverted. Therefore, I'd greatly prefer if we could keep this stuff in-kernel somehow. Would it be possible for ALSA to provide a set of standard LED triggers related to the common mixer controls, that we could hook to in platform devices? That would be a nice, generic solution that could be used by anyone who wants to provide interesting LEDs tied to ALSA mixer controls... I'd probably need to get a new feature added to the LED class to support hidden LEDs (ones that are not exposed to userspace) or to come up with a clean way for platform devices to hook to standard LED triggers without going through the LED class, but that's not an ALSA problem... -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
