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| author | Maxime Ripard | 2018-01-22 10:25:20 +0100 |
|---|---|---|
| committer | Maxime Ripard | 2018-01-22 15:15:11 +0100 |
| commit | 3004f75fd4732a67ba1bd069a209957f3b3394d2 (patch) | |
| tree | fe01ce39c387b340321378d152227656adf09bc1 /drivers/gpu/drm/sun4i/sunxi_engine.h | |
| parent | drm/sun4i: engine: Add a custom crtc atomic_check (diff) | |
| download | kernel-qcow2-linux-3004f75fd4732a67ba1bd069a209957f3b3394d2.tar.gz kernel-qcow2-linux-3004f75fd4732a67ba1bd069a209957f3b3394d2.tar.xz kernel-qcow2-linux-3004f75fd4732a67ba1bd069a209957f3b3394d2.zip | |
drm/sun4i: engine: Add a VBLANK quirk callback
In some cases, the display engine needs to apply some quirks during the
VBLANK event. In the Display Engine 1.0 case for example, we can only
disable the frontend once the backend has been, which is at VBLANK.
Let's introduce a callback that can be implemented by the various engines.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7c298d43aa1500196aa5d15d7a7c0f228c7a6f3c.1516613040.git-series.maxime.ripard@free-electrons.com
Diffstat (limited to 'drivers/gpu/drm/sun4i/sunxi_engine.h')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sunxi_engine.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sunxi_engine.h b/drivers/gpu/drm/sun4i/sunxi_engine.h index b819d4f9f02f..54c029877531 100644 --- a/drivers/gpu/drm/sun4i/sunxi_engine.h +++ b/drivers/gpu/drm/sun4i/sunxi_engine.h @@ -85,6 +85,19 @@ struct sunxi_engine_ops { * This function is optional. */ void (*disable_color_correction)(struct sunxi_engine *engine); + + /** + * @vblank_quirk: + * + * This callback is used to implement engine-specific + * behaviour part of the VBLANK event. It is run with all the + * constraints of an interrupt (can't sleep, all local + * interrupts disabled) and therefore should be as fast as + * possible. + * + * This function is optional. + */ + void (*vblank_quirk)(struct sunxi_engine *engine); }; /** |