Re: FB_EVENT (blank and unblank?)

On Sunday 28 November 2004 08:59, Richard Purdie wrote:

Antonino A. Daplas:

quoted

quoted

My Issue: I have a backlight driver that shares no code with the
framebuffer driver - the hardware is totally separate. I have there
written
them as two spate drivers which seems to make sense. The problem is that
there is no method to communicate blanking to the external backlight
driver
(which is all it needs to know about). Obviously I can add links between

Of course there is.  Your backlight driver does a
register_backlight_controllers().  Then your fb driver does a
set_backlight_enable(!blank) in its xxxfb_blank implementation.

Yes, you could do that. I was trying to look for a method than meant no
specific action by the framebuffer driver was required. It shouldn't have
to care if a backlight is present or not...

Ah, when you explained it like that, then it does sound very reasonable.
Okay, I think that can be added.  I think we will need only 1 event
FB_EVENT_BLANK, then in fb_event.data, the blanking level.

We can do it similarly with the mode switch event, differentiate if the
request is coming from userspace or the kernel.

Tony





-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now. 
http://productguide.itmanagersjournal.com/