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Message-ID: <20090715135808.GA19054@srcf.ucam.org> Date: Wed, 15 Jul 2009 14:58:08 +0100 From: Matthew Garrett <mjg59@...f.ucam.org> To: Richard Purdie <rpurdie@...ys.net> Cc: Zhang Rui <rui.zhang@...el.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>, "lenb@...nel.org" <lenb@...nel.org>, "corentincj@...aif.net" <corentincj@...aif.net> Subject: Re: [PATCH 1/3] backlight: Allow drivers to update the core, and generate events on changes On Wed, Jul 15, 2009 at 10:11:29AM +0100, Richard Purdie wrote: > So there are basically two values we're ever interested in at a given > point in time. The current ambient light reading and the corresponding > display luminance adjustment. Both of those could just be exposed as an > input device really? The alternative would be hwmon, I guess. > Agreed, userspace should be where policy is decided. Having a standalone > module which connected the two together with a "default" policy might be > acceptable too though? If userspace then wants to handle things it just > makes sure the module is not loaded. You want smoothing even in a default policy, and doing that well might be a bit much for the kernel? -- Matthew Garrett | mjg59@...f.ucam.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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