diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fb.c')
-rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fb.c | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c index 4ef4cd3f9936..7413f4b729b0 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fb.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c @@ -30,10 +30,13 @@ #include <drm/drm_crtc.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_fb_helper.h> +#include <uapi/drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_fb.h" #include "exynos_drm_gem.h" +#include "exynos_drm_iommu.h" +#include "exynos_drm_encoder.h" #define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb) @@ -50,6 +53,32 @@ struct exynos_drm_fb { struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER]; }; +static int check_fb_gem_memory_type(struct drm_device *drm_dev, + struct exynos_drm_gem_obj *exynos_gem_obj) +{ + unsigned int flags; + + /* + * if exynos drm driver supports iommu then framebuffer can use + * all the buffer types. + */ + if (is_drm_iommu_supported(drm_dev)) + return 0; + + flags = exynos_gem_obj->flags; + + /* + * without iommu support, not support physically non-continuous memory + * for framebuffer. + */ + if (IS_NONCONTIG_BUFFER(flags)) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + return -EINVAL; + } + + return 0; +} + static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) { struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); @@ -57,6 +86,9 @@ static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) DRM_DEBUG_KMS("%s\n", __FILE__); + /* make sure that overlay data are updated before relesing fb. */ + exynos_drm_encoder_complete_scanout(fb); + drm_framebuffer_cleanup(fb); for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem_obj); i++) { @@ -128,14 +160,25 @@ exynos_drm_framebuffer_init(struct drm_device *dev, struct drm_gem_object *obj) { struct exynos_drm_fb *exynos_fb; + struct exynos_drm_gem_obj *exynos_gem_obj; int ret; + exynos_gem_obj = to_exynos_gem_obj(obj); + + ret = check_fb_gem_memory_type(dev, exynos_gem_obj); + if (ret < 0) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + return ERR_PTR(-EINVAL); + } + exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); if (!exynos_fb) { DRM_ERROR("failed to allocate exynos drm framebuffer\n"); return ERR_PTR(-ENOMEM); } + exynos_fb->exynos_gem_obj[0] = exynos_gem_obj; + ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); if (ret) { DRM_ERROR("failed to initialize framebuffer\n"); @@ -143,7 +186,6 @@ exynos_drm_framebuffer_init(struct drm_device *dev, } drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); - exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); return &exynos_fb->fb; } @@ -214,6 +256,9 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt); for (i = 1; i < exynos_fb->buf_cnt; i++) { + struct exynos_drm_gem_obj *exynos_gem_obj; + int ret; + obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[i]); if (!obj) { @@ -222,6 +267,15 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, return ERR_PTR(-ENOENT); } + exynos_gem_obj = to_exynos_gem_obj(obj); + + ret = check_fb_gem_memory_type(dev, exynos_gem_obj); + if (ret < 0) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + exynos_drm_fb_destroy(fb); + return ERR_PTR(ret); + } + exynos_fb->exynos_gem_obj[i] = to_exynos_gem_obj(obj); } |