diff options
Diffstat (limited to 'drivers/gpu/host1x/dev.c')
| -rw-r--r-- | drivers/gpu/host1x/dev.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index 14c1ea7506fb..6994f8c0e02e 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -22,6 +22,10 @@ #include <trace/events/host1x.h> #undef CREATE_TRACE_POINTS +#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) +#include <asm/dma-iommu.h> +#endif + #include "bus.h" #include "channel.h" #include "debug.h" @@ -263,6 +267,17 @@ static struct iommu_domain *host1x_iommu_attach(struct host1x *host) struct iommu_domain *domain = iommu_get_domain_for_dev(host->dev); int err; +#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) + if (host->dev->archdata.mapping) { + struct dma_iommu_mapping *mapping = + to_dma_iommu_mapping(host->dev); + arm_iommu_detach_device(host->dev); + arm_iommu_release_mapping(mapping); + + domain = iommu_get_domain_for_dev(host->dev); + } +#endif + /* * We may not always want to enable IOMMU support (for example if the * host1x firewall is already enabled and we don't support addressing |