[Intel-gfx] [RFC] [intel-gfx] :The backlight issue when KMS is used
mjg59 at srcf.ucam.org
Tue Apr 7 01:22:56 PDT 2009
On Tue, Apr 07, 2009 at 04:20:34PM +0800, Zhang Rui wrote:
> All subsystems can register a set of callbacks for backlight control in
> its own way, e.g. ACPI, platform driver, i915.
> And the backlight manager only exports one single I/F to users, like:
> and it supports multiple modes, e.g.
> 1. generic ---ACPI
> 2. platform---platform drivers
> 3. legacy-----i915
This seems to be a lot of complexity for an uncommon case. Is there any
real need to modify the mode at runtime? What happens if the platform
driver gets loaded before i915?
Matthew Garrett | mjg59 at srcf.ucam.org
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