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drm/sun4i: backend: Remove the MBUS quirks

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Now that the MBUS quirks are applied by our global notifier, we can
remove them from our DRM driver.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Maxime Ripard 2020-11-06 15:55:05 +01:00
parent b4bdc4fbf8
commit 756668ba68
1 changed files with 0 additions and 19 deletions
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19
drivers/gpu/drm/sun4i/sun4i_backend.c
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@ -805,25 +805,6 @@ static int sun4i_backend_bind(struct device *dev, struct device *master,
ret = of_dma_configure(drm->dev, dev->of_node, true);
if (ret)
return ret;
} else {
/*
* If we don't have the interconnect property, most likely
* because of an old DT, we need to set the DMA offset by hand
* on our device since the RAM mapping is at 0 for the DMA bus,
* unlike the CPU.
*
* XXX(hch): this has no business in a driver and needs to move
* to the device tree.
*
* If we have two subsequent calls to dma_direct_set_offset
* returns -EINVAL. Unfortunately, this happens when we have two
* backends in the system, and will result in the driver
* reporting an error while it has been setup properly before.
* Ignore EINVAL, but it should really be removed eventually.
*/
ret = dma_direct_set_offset(drm->dev, PHYS_OFFSET, 0, SZ_4G);
if (ret && ret != -EINVAL)
return ret;
}
backend->engine.node = dev->of_node;