diff options
Diffstat (limited to 'drivers/gpu/drm/exynos')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index f433eb7..eae064a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -34,6 +34,7 @@ #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 +112,18 @@ 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 +138,12 @@ 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 +334,7 @@ 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 */ |
