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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>
Add a helper function to move the cursor to the home position, so
callers no longer need access to internal state.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These definitions were never used in any publicly available version
since (at least) 2004.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
LCD_FLAG_F is the font flag, LCD_FLAG_N is the two-lines flag.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is an anonymous struct which is actually used as a bitmap. So
convert the struct to a bitmap and change code accordingly where
needed.
This also allows for a cleanup of set_data_bits and set_ctrl_bits as
they can use a common helper now. The helper can also be converted to
a for loop instead of doing bit OR. And given it is a for loop now,
bit masking (using BIT_MSK) is moved from the callers there too.
Signed-off-by: Daniel Chromik <daniel.chromik@seznam.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Acked-by: Willy Tarreau <willy@haproxy.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
