drm/exynos: add iommu support to fimd driver

The iommu will be enabled when fimd sub driver is probed and
will be disabled when removed.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index dcf3504ebab7..ad04eddfa405 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -25,6 +25,7 @@
 #include "exynos_drm_drv.h"
 #include "exynos_drm_fbdev.h"
 #include "exynos_drm_crtc.h"
+#include "exynos_drm_iommu.h"
 
 /*
  * FIMD is stand for Fully Interactive Mobile Display and
@@ -691,6 +692,10 @@ static int fimd_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
          */
         drm_dev->vblank_disable_allowed = 1;
 
+        /* attach this sub driver to iommu mapping if supported. */
+        if (is_drm_iommu_supported(drm_dev))
+                drm_iommu_attach_device(drm_dev, dev);
+
         return 0;
 }
 
@@ -698,7 +703,9 @@ static void fimd_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
 {
         DRM_DEBUG_KMS("%s\n", __FILE__);
 
-        /* TODO. */
+        /* detach this sub driver from iommu mapping if supported. */
+        if (is_drm_iommu_supported(drm_dev))
+                drm_iommu_detach_device(drm_dev, dev);
 }
 
 static int fimd_calc_clkdiv(struct fimd_context *ctx,