drm: omapdrm: Map pages for DMA in DMA_TO_DEVICE direction

The display engine only reads from memory, there's no need to use
bidirectional DMA mappings. Use DMA_TO_DEVICE instead.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c
index 94aef52c36ad..461fbb5c0075 100644
--- a/drivers/gpu/drm/omapdrm/omap_gem.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem.c
@@ -254,7 +254,7 @@ static int omap_gem_attach_pages(struct drm_gem_object *obj)
 
                 for (i = 0; i < npages; i++) {
                         addrs[i] = dma_map_page(dev->dev, pages[i],
-                                        0, PAGE_SIZE, DMA_BIDIRECTIONAL);
+                                        0, PAGE_SIZE, DMA_TO_DEVICE);
 
                         if (dma_mapping_error(dev->dev, addrs[i])) {
                                 dev_warn(dev->dev,
@@ -262,7 +262,7 @@ static int omap_gem_attach_pages(struct drm_gem_object *obj)
 
                                 for (i = i - 1; i >= 0; --i) {
                                         dma_unmap_page(dev->dev, addrs[i],
-                                                PAGE_SIZE, DMA_BIDIRECTIONAL);
+                                                PAGE_SIZE, DMA_TO_DEVICE);
                                 }
 
                                 ret = -ENOMEM;
@@ -322,7 +322,7 @@ static void omap_gem_detach_pages(struct drm_gem_object *obj)
         for (i = 0; i < npages; i++) {
                 if (omap_obj->dma_addrs[i])
                         dma_unmap_page(obj->dev->dev, omap_obj->dma_addrs[i],
-                                       PAGE_SIZE, DMA_BIDIRECTIONAL);
+                                       PAGE_SIZE, DMA_TO_DEVICE);
         }
 
         kfree(omap_obj->dma_addrs);
@@ -744,7 +744,7 @@ void omap_gem_cpu_sync_page(struct drm_gem_object *obj, int pgoff)
 
         if (omap_obj->dma_addrs[pgoff]) {
                 dma_unmap_page(dev->dev, omap_obj->dma_addrs[pgoff],
-                                PAGE_SIZE, DMA_BIDIRECTIONAL);
+                                PAGE_SIZE, DMA_TO_DEVICE);
                 omap_obj->dma_addrs[pgoff] = 0;
         }
 }
@@ -767,8 +767,7 @@ void omap_gem_dma_sync_buffer(struct drm_gem_object *obj,
                         dma_addr_t addr;
 
                         addr = dma_map_page(dev->dev, pages[i], 0,
-                                            PAGE_SIZE, DMA_BIDIRECTIONAL);
-
+                                            PAGE_SIZE, dir);
                         if (dma_mapping_error(dev->dev, addr)) {
                                 dev_warn(dev->dev, "%s: failed to map page\n",
                                         __func__);