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>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index dcf3504ebab7b58749275d7370c6d774520a31e2..ad04eddfa405e5fa3fb906765d46ae20b8c6bbc1 100644 (file)
--- 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,