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drm: omapdrm: dss: Set the DMA coherent mask 

When merging the omapdrm and omapdss drivers the omapdrm virtual
platform device will disappear, and the omapdss platform device will be
used for DMA memory allocation. To prepare for that, set the DMA
coherent mask for the device.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Laurent Pinchart 2017-10-13 17:59:01 +03:00 committed by Tomi Valkeinen
parent 2cd3e6834d
commit a921c1a8ed
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/omapdrm/dss/dss.c
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@ -23,6 +23,7 @@
#define DSS_SUBSYS_NAME "DSS"
#include <linux/debugfs.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/io.h>
@ -1441,6 +1442,12 @@ static int dss_probe(struct platform_device *pdev)
dss.pdev = pdev;
r = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (r) {
dev_err(&pdev->dev, "Failed to set the DMA mask\n");
return r;
}
/*
* The various OMAP3-based SoCs can't be told apart using the compatible
* string, use SoC device matching.