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video: fbdev: ssd1307fb: Cache address ranges
authorGeert Uytterhoeven <geert@linux-m68k.org>
Tue, 27 Jul 2021 13:47:30 +0000 (15:47 +0200)
committerSam Ravnborg <sam@ravnborg.org>
Tue, 27 Jul 2021 15:18:26 +0000 (17:18 +0200)
commit833d14a4bf83b9be89e407b8d99b462172fe0a40
tree2428855554c0033ee47d2ce3d4275869839c0da2tree | snapshot
parent251e48a1db758ad7151e2dce146e63d9f4baf94bcommit | diff
video: fbdev: ssd1307fb: Cache address ranges

Cache the column and page ranges, to avoid doing unneeded I2C transfers
when the values haven't changed.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727134730.3765898-6-geert@linux-m68k.org
drivers/video/fbdev/ssd1307fb.c diff | blob | history
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