gpu: host1x: Set DMA ops on device creation
authorAlexandre Courbot <acourbot@nvidia.com>
Fri, 26 Feb 2016 09:06:53 +0000 (18:06 +0900)
committerThierry Reding <treding@nvidia.com>
Fri, 4 Mar 2016 15:24:57 +0000 (16:24 +0100)
Currently host1x-instanciated devices have their dma_ops left to NULL,
which makes any DMA operation (like buffer import) on ARM64 fallback
to the dummy_dma_ops and fail with an error.

This patch calls of_dma_configure() with the host1x node when creating
such a device, so the proper DMA operations are set.

Suggested-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
drivers/gpu/host1x/bus.c

index da462af..dd2dbb9 100644 (file)
@@ -18,6 +18,7 @@
 #include <linux/host1x.h>
 #include <linux/of.h>
 #include <linux/slab.h>
+#include <linux/of_device.h>
 
 #include "bus.h"
 #include "dev.h"
@@ -394,6 +395,7 @@ static int host1x_device_add(struct host1x *host1x,
        device->dev.coherent_dma_mask = host1x->dev->coherent_dma_mask;
        device->dev.dma_mask = &device->dev.coherent_dma_mask;
        dev_set_name(&device->dev, "%s", driver->driver.name);
+       of_dma_configure(&device->dev, host1x->dev->of_node);
        device->dev.release = host1x_device_release;
        device->dev.bus = &host1x_bus_type;
        device->dev.parent = host1x->dev;