Messages in this thread | | | Date | Thu, 16 Nov 2006 09:45:03 +0100 | From | "Miguel Ojeda" <> | Subject | Re: ACPI output/lcd/auxdisplay mess |
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On 11/15/06, James Simmons <jsimmons@infradead.org> wrote: > > > Well, we were aware of video/backlight/* (read below). Anyway, > > auxdisplay doesn't create a class; it did in first versions, but right > > now it behaves just like a framebuffer, no classes in the playground > > (maybe you read a old version?). > ... > > However, auxdisplay means "auxiliary display device drivers", not _the > > display_. In such folder we can put every > > auxiliar-optional-secundary-rare display (not just LCDs, framebuffers, > > ...) who has special requirements (like parport wiring, fixed refresh > > rate, different properties...). Also, things like "set_contrast", > > "max_constrast", "set_power"... didn't seem very appropriate. > > Is it a framebuffer device ? The framebuffer layer is abstracted to work > with such devices. >
cfag12864bcfb is a "fbdev" (actually, it is a "fb wrapper" for cfag12864b, so it behaves like a framebuffer, although it is not an usual framebuffer. f.e. it has asynchronous refresh rate, a mmaped page to appear to be a fb...).
Still, it is not the front panel lcd of any specific device like PDA, so people that expects only their primary video/ displays may be confused if it appears at such section. So we decided to go away from video/. Maybe we can change the description, as right now it only refers to front panel lcds.
-- Miguel Ojeda http://maxextreme.googlepages.com/index.htm - 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/
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