drm/mipi_dbi: Add support for display offsets
If the resolution of the TFT display is smaller than the maximum resolution supported by the display controller, the display may be connected to the driver output arrays with a horizontal and/or vertical offset, leading to a shifted image. Add support for specifying these offsets. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200115124548.3951-4-geert+renesas@glider.be
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