Please advise on choosing the right backlight switching framework

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Hi,

I'd like to add support for lcd backlight on/off switching on omap1 ams-delta 
board. I could potentially use omap1_bl backlight class device driver for 
this purpose, but it is not fully compatible with ams-delta, as it actually 
changes lcd contrast instead of backlight intensity on this board.
I can see two possible ways of controlling backlight on omap platforms:
1. over omapfb panel device driver, with lcd_panel.set_bklight_level(),
2. over backlight class device driver, using backlight_ops.update_status().
Which method is the preferred one, giving more chances for integration into 
the mainline kernel?

Thanks,
Janusz
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