v4.19.13 snapshot.
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
new file mode 100644
index 0000000..4c22cdd
--- /dev/null
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -0,0 +1,436 @@
+/*
+ * Copyright (C) 2012-2013 Avionic Design GmbH
+ * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
+ *
+ * Based on the KMS/FB CMA helpers
+ * Copyright (C) 2012 Analog Device Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/console.h>
+
+#include "drm.h"
+#include "gem.h"
+#include <drm/drm_gem_framebuffer_helper.h>
+
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+static inline struct tegra_fbdev *to_tegra_fbdev(struct drm_fb_helper *helper)
+{
+ return container_of(helper, struct tegra_fbdev, base);
+}
+#endif
+
+struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
+ unsigned int index)
+{
+ return to_tegra_bo(drm_gem_fb_get_obj(framebuffer, index));
+}
+
+bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer)
+{
+ struct tegra_bo *bo = tegra_fb_get_plane(framebuffer, 0);
+
+ if (bo->flags & TEGRA_BO_BOTTOM_UP)
+ return true;
+
+ return false;
+}
+
+int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
+ struct tegra_bo_tiling *tiling)
+{
+ uint64_t modifier = framebuffer->modifier;
+
+ switch (modifier) {
+ case DRM_FORMAT_MOD_LINEAR:
+ tiling->mode = TEGRA_BO_TILING_MODE_PITCH;
+ tiling->value = 0;
+ break;
+
+ case DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED:
+ tiling->mode = TEGRA_BO_TILING_MODE_TILED;
+ tiling->value = 0;
+ break;
+
+ case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0):
+ tiling->mode = TEGRA_BO_TILING_MODE_BLOCK;
+ tiling->value = 0;
+ break;
+
+ case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1):
+ tiling->mode = TEGRA_BO_TILING_MODE_BLOCK;
+ tiling->value = 1;
+ break;
+
+ case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2):
+ tiling->mode = TEGRA_BO_TILING_MODE_BLOCK;
+ tiling->value = 2;
+ break;
+
+ case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3):
+ tiling->mode = TEGRA_BO_TILING_MODE_BLOCK;
+ tiling->value = 3;
+ break;
+
+ case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4):
+ tiling->mode = TEGRA_BO_TILING_MODE_BLOCK;
+ tiling->value = 4;
+ break;
+
+ case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5):
+ tiling->mode = TEGRA_BO_TILING_MODE_BLOCK;
+ tiling->value = 5;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct drm_framebuffer_funcs tegra_fb_funcs = {
+ .destroy = drm_gem_fb_destroy,
+ .create_handle = drm_gem_fb_create_handle,
+};
+
+static struct drm_framebuffer *tegra_fb_alloc(struct drm_device *drm,
+ const struct drm_mode_fb_cmd2 *mode_cmd,
+ struct tegra_bo **planes,
+ unsigned int num_planes)
+{
+ struct drm_framebuffer *fb;
+ unsigned int i;
+ int err;
+
+ fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+ if (!fb)
+ return ERR_PTR(-ENOMEM);
+
+ drm_helper_mode_fill_fb_struct(drm, fb, mode_cmd);
+
+ for (i = 0; i < fb->format->num_planes; i++)
+ fb->obj[i] = &planes[i]->gem;
+
+ err = drm_framebuffer_init(drm, fb, &tegra_fb_funcs);
+ if (err < 0) {
+ dev_err(drm->dev, "failed to initialize framebuffer: %d\n",
+ err);
+ kfree(fb);
+ return ERR_PTR(err);
+ }
+
+ return fb;
+}
+
+struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
+ struct drm_file *file,
+ const struct drm_mode_fb_cmd2 *cmd)
+{
+ unsigned int hsub, vsub, i;
+ struct tegra_bo *planes[4];
+ struct drm_gem_object *gem;
+ struct drm_framebuffer *fb;
+ int err;
+
+ hsub = drm_format_horz_chroma_subsampling(cmd->pixel_format);
+ vsub = drm_format_vert_chroma_subsampling(cmd->pixel_format);
+
+ for (i = 0; i < drm_format_num_planes(cmd->pixel_format); i++) {
+ unsigned int width = cmd->width / (i ? hsub : 1);
+ unsigned int height = cmd->height / (i ? vsub : 1);
+ unsigned int size, bpp;
+
+ gem = drm_gem_object_lookup(file, cmd->handles[i]);
+ if (!gem) {
+ err = -ENXIO;
+ goto unreference;
+ }
+
+ bpp = drm_format_plane_cpp(cmd->pixel_format, i);
+
+ size = (height - 1) * cmd->pitches[i] +
+ width * bpp + cmd->offsets[i];
+
+ if (gem->size < size) {
+ err = -EINVAL;
+ goto unreference;
+ }
+
+ planes[i] = to_tegra_bo(gem);
+ }
+
+ fb = tegra_fb_alloc(drm, cmd, planes, i);
+ if (IS_ERR(fb)) {
+ err = PTR_ERR(fb);
+ goto unreference;
+ }
+
+ return fb;
+
+unreference:
+ while (i--)
+ drm_gem_object_put_unlocked(&planes[i]->gem);
+
+ return ERR_PTR(err);
+}
+
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+static int tegra_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+ struct drm_fb_helper *helper = info->par;
+ struct tegra_bo *bo;
+ int err;
+
+ bo = tegra_fb_get_plane(helper->fb, 0);
+
+ err = drm_gem_mmap_obj(&bo->gem, bo->gem.size, vma);
+ if (err < 0)
+ return err;
+
+ return __tegra_gem_mmap(&bo->gem, vma);
+}
+
+static struct fb_ops tegra_fb_ops = {
+ .owner = THIS_MODULE,
+ DRM_FB_HELPER_DEFAULT_OPS,
+ .fb_fillrect = drm_fb_helper_sys_fillrect,
+ .fb_copyarea = drm_fb_helper_sys_copyarea,
+ .fb_imageblit = drm_fb_helper_sys_imageblit,
+ .fb_mmap = tegra_fb_mmap,
+};
+
+static int tegra_fbdev_probe(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
+{
+ struct tegra_fbdev *fbdev = to_tegra_fbdev(helper);
+ struct tegra_drm *tegra = helper->dev->dev_private;
+ struct drm_device *drm = helper->dev;
+ struct drm_mode_fb_cmd2 cmd = { 0 };
+ unsigned int bytes_per_pixel;
+ struct drm_framebuffer *fb;
+ unsigned long offset;
+ struct fb_info *info;
+ struct tegra_bo *bo;
+ size_t size;
+ int err;
+
+ bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
+
+ cmd.width = sizes->surface_width;
+ cmd.height = sizes->surface_height;
+ cmd.pitches[0] = round_up(sizes->surface_width * bytes_per_pixel,
+ tegra->pitch_align);
+
+ cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
+ sizes->surface_depth);
+
+ size = cmd.pitches[0] * cmd.height;
+
+ bo = tegra_bo_create(drm, size, 0);
+ if (IS_ERR(bo))
+ return PTR_ERR(bo);
+
+ info = drm_fb_helper_alloc_fbi(helper);
+ if (IS_ERR(info)) {
+ dev_err(drm->dev, "failed to allocate framebuffer info\n");
+ drm_gem_object_put_unlocked(&bo->gem);
+ return PTR_ERR(info);
+ }
+
+ fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
+ if (IS_ERR(fbdev->fb)) {
+ err = PTR_ERR(fbdev->fb);
+ dev_err(drm->dev, "failed to allocate DRM framebuffer: %d\n",
+ err);
+ drm_gem_object_put_unlocked(&bo->gem);
+ return PTR_ERR(fbdev->fb);
+ }
+
+ fb = fbdev->fb;
+ helper->fb = fb;
+ helper->fbdev = info;
+
+ info->par = helper;
+ info->flags = FBINFO_FLAG_DEFAULT;
+ info->fbops = &tegra_fb_ops;
+
+ drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
+ drm_fb_helper_fill_var(info, helper, fb->width, fb->height);
+
+ offset = info->var.xoffset * bytes_per_pixel +
+ info->var.yoffset * fb->pitches[0];
+
+ if (bo->pages) {
+ bo->vaddr = vmap(bo->pages, bo->num_pages, VM_MAP,
+ pgprot_writecombine(PAGE_KERNEL));
+ if (!bo->vaddr) {
+ dev_err(drm->dev, "failed to vmap() framebuffer\n");
+ err = -ENOMEM;
+ goto destroy;
+ }
+ }
+
+ drm->mode_config.fb_base = (resource_size_t)bo->paddr;
+ info->screen_base = (void __iomem *)bo->vaddr + offset;
+ info->screen_size = size;
+ info->fix.smem_start = (unsigned long)(bo->paddr + offset);
+ info->fix.smem_len = size;
+
+ return 0;
+
+destroy:
+ drm_framebuffer_remove(fb);
+ return err;
+}
+
+static const struct drm_fb_helper_funcs tegra_fb_helper_funcs = {
+ .fb_probe = tegra_fbdev_probe,
+};
+
+static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm)
+{
+ struct tegra_fbdev *fbdev;
+
+ fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
+ if (!fbdev) {
+ dev_err(drm->dev, "failed to allocate DRM fbdev\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ drm_fb_helper_prepare(drm, &fbdev->base, &tegra_fb_helper_funcs);
+
+ return fbdev;
+}
+
+static void tegra_fbdev_free(struct tegra_fbdev *fbdev)
+{
+ kfree(fbdev);
+}
+
+static int tegra_fbdev_init(struct tegra_fbdev *fbdev,
+ unsigned int preferred_bpp,
+ unsigned int num_crtc,
+ unsigned int max_connectors)
+{
+ struct drm_device *drm = fbdev->base.dev;
+ int err;
+
+ err = drm_fb_helper_init(drm, &fbdev->base, max_connectors);
+ if (err < 0) {
+ dev_err(drm->dev, "failed to initialize DRM FB helper: %d\n",
+ err);
+ return err;
+ }
+
+ err = drm_fb_helper_single_add_all_connectors(&fbdev->base);
+ if (err < 0) {
+ dev_err(drm->dev, "failed to add connectors: %d\n", err);
+ goto fini;
+ }
+
+ err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp);
+ if (err < 0) {
+ dev_err(drm->dev, "failed to set initial configuration: %d\n",
+ err);
+ goto fini;
+ }
+
+ return 0;
+
+fini:
+ drm_fb_helper_fini(&fbdev->base);
+ return err;
+}
+
+static void tegra_fbdev_exit(struct tegra_fbdev *fbdev)
+{
+ drm_fb_helper_unregister_fbi(&fbdev->base);
+
+ if (fbdev->fb) {
+ struct tegra_bo *bo = tegra_fb_get_plane(fbdev->fb, 0);
+
+ /* Undo the special mapping we made in fbdev probe. */
+ if (bo && bo->pages) {
+ vunmap(bo->vaddr);
+ bo->vaddr = 0;
+ }
+
+ drm_framebuffer_remove(fbdev->fb);
+ }
+
+ drm_fb_helper_fini(&fbdev->base);
+ tegra_fbdev_free(fbdev);
+}
+#endif
+
+int tegra_drm_fb_prepare(struct drm_device *drm)
+{
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+ struct tegra_drm *tegra = drm->dev_private;
+
+ tegra->fbdev = tegra_fbdev_create(drm);
+ if (IS_ERR(tegra->fbdev))
+ return PTR_ERR(tegra->fbdev);
+#endif
+
+ return 0;
+}
+
+void tegra_drm_fb_free(struct drm_device *drm)
+{
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+ struct tegra_drm *tegra = drm->dev_private;
+
+ tegra_fbdev_free(tegra->fbdev);
+#endif
+}
+
+int tegra_drm_fb_init(struct drm_device *drm)
+{
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+ struct tegra_drm *tegra = drm->dev_private;
+ int err;
+
+ err = tegra_fbdev_init(tegra->fbdev, 32, drm->mode_config.num_crtc,
+ drm->mode_config.num_connector);
+ if (err < 0)
+ return err;
+#endif
+
+ return 0;
+}
+
+void tegra_drm_fb_exit(struct drm_device *drm)
+{
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+ struct tegra_drm *tegra = drm->dev_private;
+
+ tegra_fbdev_exit(tegra->fbdev);
+#endif
+}
+
+void tegra_drm_fb_suspend(struct drm_device *drm)
+{
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+ struct tegra_drm *tegra = drm->dev_private;
+
+ console_lock();
+ drm_fb_helper_set_suspend(&tegra->fbdev->base, 1);
+ console_unlock();
+#endif
+}
+
+void tegra_drm_fb_resume(struct drm_device *drm)
+{
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+ struct tegra_drm *tegra = drm->dev_private;
+
+ console_lock();
+ drm_fb_helper_set_suspend(&tegra->fbdev->base, 0);
+ console_unlock();
+#endif
+}