drm: bpp and depth changes require full mode sets
To properly drive a framebuffer with a new depth or bpp, dither settings and link bandwidth calculations may change, so make sure we go through a full mode set in that case. Reported-by: NChris Wilson <chris@chris-wilson.co.uk> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org> Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk> Signed-off-by: NKeith Packard <keithp@keithp.com>
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