1 files changed, 34 insertions, 264 deletions

diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index b947e82bbeb1..1cef8c5cac50 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -1,27 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * 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.
+ * Based on the KMS/FB DMA helpers
+ *   Copyright (C) 2012 Analog Devices Inc.
  */
 
 #include <linux/console.h>
 
-#include "drm.h"
-#include "gem.h"
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_modeset_helper.h>
+#include <drm/drm_print.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
+#include "drm.h"
+#include "gem.h"
 
 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 				    unsigned int index)
@@ -44,6 +39,15 @@ int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 {
 	uint64_t modifier = framebuffer->modifier;
 
+	if (fourcc_mod_is_vendor(modifier, NVIDIA)) {
+		if ((modifier & DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT) == 0)
+			tiling->sector_layout = TEGRA_BO_SECTOR_LAYOUT_TEGRA;
+		else
+			tiling->sector_layout = TEGRA_BO_SECTOR_LAYOUT_GPU;
+
+		modifier &= ~DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT;
+	}
+
 	switch (modifier) {
 	case DRM_FORMAT_MOD_LINEAR:
 		tiling->mode = TEGRA_BO_TILING_MODE_PITCH;
@@ -86,6 +90,7 @@ int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 		break;
 
 	default:
+		DRM_DEBUG_KMS("unknown format modifier: %llx\n", modifier);
 		return -EINVAL;
 	}
 
@@ -97,10 +102,11 @@ static const struct drm_framebuffer_funcs tegra_fb_funcs = {
 	.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 *tegra_fb_alloc(struct drm_device *drm,
+				       const struct drm_format_info *info,
+				       const struct drm_mode_fb_cmd2 *mode_cmd,
+				       struct tegra_bo **planes,
+				       unsigned int num_planes)
 {
 	struct drm_framebuffer *fb;
 	unsigned int i;
@@ -110,7 +116,7 @@ static struct drm_framebuffer *tegra_fb_alloc(struct drm_device *drm,
 	if (!fb)
 		return ERR_PTR(-ENOMEM);
 
-	drm_helper_mode_fill_fb_struct(drm, fb, mode_cmd);
+	drm_helper_mode_fill_fb_struct(drm, fb, info, mode_cmd);
 
 	for (i = 0; i < fb->format->num_planes; i++)
 		fb->obj[i] = &planes[i]->gem;
@@ -128,20 +134,18 @@ static struct drm_framebuffer *tegra_fb_alloc(struct drm_device *drm,
 
 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 					struct drm_file *file,
+					const struct drm_format_info *info,
 					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;
+	unsigned int i;
 	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);
+	for (i = 0; i < info->num_planes; i++) {
+		unsigned int width = cmd->width / (i ? info->hsub : 1);
+		unsigned int height = cmd->height / (i ? info->vsub : 1);
 		unsigned int size, bpp;
 
 		gem = drm_gem_object_lookup(file, cmd->handles[i]);
@@ -150,20 +154,21 @@ struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 			goto unreference;
 		}
 
-		bpp = drm_format_plane_cpp(cmd->pixel_format, i);
+		bpp = info->cpp[i];
 
 		size = (height - 1) * cmd->pitches[i] +
 		       width * bpp + cmd->offsets[i];
 
 		if (gem->size < size) {
 			err = -EINVAL;
+			drm_gem_object_put(gem);
 			goto unreference;
 		}
 
 		planes[i] = to_tegra_bo(gem);
 	}
 
-	fb = tegra_fb_alloc(drm, cmd, planes, i);
+	fb = tegra_fb_alloc(drm, info, cmd, planes, i);
 	if (IS_ERR(fb)) {
 		err = PTR_ERR(fb);
 		goto unreference;
@@ -173,242 +178,7 @@ struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 
 unreference:
 	while (i--)
-		drm_gem_object_put_unlocked(&planes[i]->gem);
+		drm_gem_object_put(&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 = NULL;
-		}
-
-		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
-}