Geert Uytterhoeven fda4ae1819
misc: panel: Abstract temporary backlight handling ...
Currently the periodic scan timer is used for three purposes,
entangling keypad and display handling, which are both optional:
1. Scanning the keypad,
2. Flashing the backlight when a key is pressed,
3. Disabling temporary backlighting after a fixed period of time.
Abstract the second purpose using a new lcd_poke() function.
Make the non-periodic temporary backlight handling independent from
keypad handling by converting it to a delayed workqueue.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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