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| author | Marko Kohtala | 2019-06-18 10:41:09 +0300 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz | 2019-07-23 17:18:19 +0200 |
| commit | b0020d8af991a904de57dbd9a7bc7a61982a6a8c (patch) | |
| tree | 8644811d4e2be773dcb84185f3c84e0053be198b /Documentation | |
| parent | dd9782834dd9dde3624ff1acea8859f3d3e792d4 (diff) | |
video: ssd1307fb: Handle width and height that are not multiple of 8
Some displays have dimensions that are not multiple of eight, for example
height of 36, but the driver divided the dimensions by 8. Defining display
to the next multiple of 8 is not good as then the display registers get
configured to dimensions that do not match. This contradicts intructions
by some display manufacturers.
Use DIV_ROUND_UP to multiple of 8 when needed so correct values can be
used.
The ssd1307fb_update_display bit reordering receives a simplification in
the process.
Signed-off-by: Marko Kohtala <marko.kohtala@okoko.fi>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190618074111.9309-5-marko.kohtala@okoko.fi
Diffstat (limited to 'Documentation')
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