Merge remote-tracking branch 'regmap/fix/debugfs' into tmp

[karo-tx-linux.git] / drivers / gpu / drm / exynos / exynos_drm_fbdev.c

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index f433eb7533a97e9550f86f2f94c4f5fa173d0427..71f867340a88b43a98572c1b84c6776528e919fc 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -6,24 +6,10 @@
  *     Joonyoung Shim <jy0922.shim@samsung.com>
  *     Seung-Woo Kim <sw0312.kim@samsung.com>
  *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
  */
 
 #include <drm/drmP.h>
@@ -34,6 +20,7 @@
 #include "exynos_drm_drv.h"
 #include "exynos_drm_fb.h"
 #include "exynos_drm_gem.h"
+#include "exynos_drm_iommu.h"
 
 #define MAX_CONNECTOR          4
 #define PREFERRED_BPP          32
@@ -111,9 +98,18 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
 
        /* map pages with kernel virtual space. */
        if (!buffer->kvaddr) {
-               unsigned int nr_pages = buffer->size >> PAGE_SHIFT;
-               buffer->kvaddr = vmap(buffer->pages, nr_pages, VM_MAP,
+               if (is_drm_iommu_supported(dev)) {
+                       unsigned int nr_pages = buffer->size >> PAGE_SHIFT;
+
+                       buffer->kvaddr = vmap(buffer->pages, nr_pages, VM_MAP,
                                        pgprot_writecombine(PAGE_KERNEL));
+               } else {
+                       phys_addr_t dma_addr = buffer->dma_addr;
+                       if (dma_addr)
+                               buffer->kvaddr = phys_to_virt(dma_addr);
+                       else
+                               buffer->kvaddr = (void __iomem *)NULL;
+               }
                if (!buffer->kvaddr) {
                        DRM_ERROR("failed to map pages to kernel space.\n");
                        return -EIO;
@@ -128,8 +124,12 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
 
        dev->mode_config.fb_base = (resource_size_t)buffer->dma_addr;
        fbi->screen_base = buffer->kvaddr + offset;
-       fbi->fix.smem_start = (unsigned long)
+       if (is_drm_iommu_supported(dev))
+               fbi->fix.smem_start = (unsigned long)
                        (page_to_phys(sg_page(buffer->sgt->sgl)) + offset);
+       else
+               fbi->fix.smem_start = (unsigned long)buffer->dma_addr;
+
        fbi->screen_size = size;
        fbi->fix.smem_len = size;
 
@@ -320,7 +320,7 @@ static void exynos_drm_fbdev_destroy(struct drm_device *dev,
        struct exynos_drm_gem_obj *exynos_gem_obj = exynos_fbd->exynos_gem_obj;
        struct drm_framebuffer *fb;
 
-       if (exynos_gem_obj->buffer->kvaddr)
+       if (is_drm_iommu_supported(dev) && exynos_gem_obj->buffer->kvaddr)
                vunmap(exynos_gem_obj->buffer->kvaddr);
 
        /* release drm framebuffer and real buffer */