diff options
Diffstat (limited to 'drivers/gpu/host1x/drm/fb.c')
| -rw-r--r-- | drivers/gpu/host1x/drm/fb.c | 374 |
1 files changed, 0 insertions, 374 deletions
diff --git a/drivers/gpu/host1x/drm/fb.c b/drivers/gpu/host1x/drm/fb.c deleted file mode 100644 index 979a3e32b78b..000000000000 --- a/drivers/gpu/host1x/drm/fb.c +++ /dev/null @@ -1,374 +0,0 @@ -/* - * 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/module.h> - -#include "drm.h" -#include "gem.h" - -static inline struct tegra_fb *to_tegra_fb(struct drm_framebuffer *fb) -{ - return container_of(fb, struct tegra_fb, base); -} - -static inline struct tegra_fbdev *to_tegra_fbdev(struct drm_fb_helper *helper) -{ - return container_of(helper, struct tegra_fbdev, base); -} - -struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, - unsigned int index) -{ - struct tegra_fb *fb = to_tegra_fb(framebuffer); - - if (index >= drm_format_num_planes(framebuffer->pixel_format)) - return NULL; - - return fb->planes[index]; -} - -static void tegra_fb_destroy(struct drm_framebuffer *framebuffer) -{ - struct tegra_fb *fb = to_tegra_fb(framebuffer); - unsigned int i; - - for (i = 0; i < fb->num_planes; i++) { - struct tegra_bo *bo = fb->planes[i]; - - if (bo) - drm_gem_object_unreference_unlocked(&bo->gem); - } - - drm_framebuffer_cleanup(framebuffer); - kfree(fb->planes); - kfree(fb); -} - -static int tegra_fb_create_handle(struct drm_framebuffer *framebuffer, - struct drm_file *file, unsigned int *handle) -{ - struct tegra_fb *fb = to_tegra_fb(framebuffer); - - return drm_gem_handle_create(file, &fb->planes[0]->gem, handle); -} - -static struct drm_framebuffer_funcs tegra_fb_funcs = { - .destroy = tegra_fb_destroy, - .create_handle = tegra_fb_create_handle, -}; - -static struct tegra_fb *tegra_fb_alloc(struct drm_device *drm, - struct drm_mode_fb_cmd2 *mode_cmd, - struct tegra_bo **planes, - unsigned int num_planes) -{ - struct tegra_fb *fb; - unsigned int i; - int err; - - fb = kzalloc(sizeof(*fb), GFP_KERNEL); - if (!fb) - return ERR_PTR(-ENOMEM); - - fb->planes = kzalloc(num_planes * sizeof(*planes), GFP_KERNEL); - if (!fb->planes) - return ERR_PTR(-ENOMEM); - - fb->num_planes = num_planes; - - drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd); - - for (i = 0; i < fb->num_planes; i++) - fb->planes[i] = planes[i]; - - err = drm_framebuffer_init(drm, &fb->base, &tegra_fb_funcs); - if (err < 0) { - dev_err(drm->dev, "failed to initialize framebuffer: %d\n", - err); - kfree(fb->planes); - kfree(fb); - return ERR_PTR(err); - } - - return fb; -} - -static struct drm_framebuffer *tegra_fb_create(struct drm_device *drm, - struct drm_file *file, - struct drm_mode_fb_cmd2 *cmd) -{ - unsigned int hsub, vsub, i; - struct tegra_bo *planes[4]; - struct drm_gem_object *gem; - struct tegra_fb *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(drm, 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->base; - -unreference: - while (i--) - drm_gem_object_unreference_unlocked(&planes[i]->gem); - - return ERR_PTR(err); -} - -static struct fb_ops tegra_fb_ops = { - .owner = THIS_MODULE, - .fb_fillrect = sys_fillrect, - .fb_copyarea = sys_copyarea, - .fb_imageblit = sys_imageblit, - .fb_check_var = drm_fb_helper_check_var, - .fb_set_par = drm_fb_helper_set_par, - .fb_blank = drm_fb_helper_blank, - .fb_pan_display = drm_fb_helper_pan_display, - .fb_setcmap = drm_fb_helper_setcmap, -}; - -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 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] = sizes->surface_width * bytes_per_pixel; - 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); - if (IS_ERR(bo)) - return PTR_ERR(bo); - - info = framebuffer_alloc(0, drm->dev); - if (!info) { - dev_err(drm->dev, "failed to allocate framebuffer info\n"); - tegra_bo_free_object(&bo->gem); - return -ENOMEM; - } - - fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1); - if (IS_ERR(fbdev->fb)) { - dev_err(drm->dev, "failed to allocate DRM framebuffer\n"); - err = PTR_ERR(fbdev->fb); - goto release; - } - - fb = &fbdev->fb->base; - helper->fb = fb; - helper->fbdev = info; - - info->par = helper; - info->flags = FBINFO_FLAG_DEFAULT; - info->fbops = &tegra_fb_ops; - - err = fb_alloc_cmap(&info->cmap, 256, 0); - if (err < 0) { - dev_err(drm->dev, "failed to allocate color map: %d\n", err); - goto destroy; - } - - drm_fb_helper_fill_fix(info, fb->pitches[0], fb->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]; - - drm->mode_config.fb_base = (resource_size_t)bo->paddr; - info->screen_base = 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_unregister_private(fb); - tegra_fb_destroy(fb); -release: - framebuffer_release(info); - return err; -} - -static 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, - unsigned int preferred_bpp, - unsigned int num_crtc, - unsigned int max_connectors) -{ - struct drm_fb_helper *helper; - struct tegra_fbdev *fbdev; - int err; - - fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); - if (!fbdev) { - dev_err(drm->dev, "failed to allocate DRM fbdev\n"); - return ERR_PTR(-ENOMEM); - } - - fbdev->base.funcs = &tegra_fb_helper_funcs; - helper = &fbdev->base; - - err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors); - if (err < 0) { - dev_err(drm->dev, "failed to initialize DRM FB helper\n"); - goto free; - } - - err = drm_fb_helper_single_add_all_connectors(&fbdev->base); - if (err < 0) { - dev_err(drm->dev, "failed to add connectors\n"); - goto fini; - } - - drm_helper_disable_unused_functions(drm); - - err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp); - if (err < 0) { - dev_err(drm->dev, "failed to set initial configuration\n"); - goto fini; - } - - return fbdev; - -fini: - drm_fb_helper_fini(&fbdev->base); -free: - kfree(fbdev); - return ERR_PTR(err); -} - -static void tegra_fbdev_free(struct tegra_fbdev *fbdev) -{ - struct fb_info *info = fbdev->base.fbdev; - - if (info) { - int err; - - err = unregister_framebuffer(info); - if (err < 0) - DRM_DEBUG_KMS("failed to unregister framebuffer\n"); - - if (info->cmap.len) - fb_dealloc_cmap(&info->cmap); - - framebuffer_release(info); - } - - if (fbdev->fb) { - drm_framebuffer_unregister_private(&fbdev->fb->base); - tegra_fb_destroy(&fbdev->fb->base); - } - - drm_fb_helper_fini(&fbdev->base); - kfree(fbdev); -} - -static void tegra_fb_output_poll_changed(struct drm_device *drm) -{ - struct host1x_drm *host1x = drm->dev_private; - - if (host1x->fbdev) - drm_fb_helper_hotplug_event(&host1x->fbdev->base); -} - -static const struct drm_mode_config_funcs tegra_drm_mode_funcs = { - .fb_create = tegra_fb_create, - .output_poll_changed = tegra_fb_output_poll_changed, -}; - -int tegra_drm_fb_init(struct drm_device *drm) -{ - struct host1x_drm *host1x = drm->dev_private; - struct tegra_fbdev *fbdev; - - drm->mode_config.min_width = 0; - drm->mode_config.min_height = 0; - - drm->mode_config.max_width = 4096; - drm->mode_config.max_height = 4096; - - drm->mode_config.funcs = &tegra_drm_mode_funcs; - - fbdev = tegra_fbdev_create(drm, 32, drm->mode_config.num_crtc, - drm->mode_config.num_connector); - if (IS_ERR(fbdev)) - return PTR_ERR(fbdev); - - host1x->fbdev = fbdev; - - return 0; -} - -void tegra_drm_fb_exit(struct drm_device *drm) -{ - struct host1x_drm *host1x = drm->dev_private; - - tegra_fbdev_free(host1x->fbdev); -} - -void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev) -{ - if (fbdev) { - drm_modeset_lock_all(fbdev->base.dev); - drm_fb_helper_restore_fbdev_mode(&fbdev->base); - drm_modeset_unlock_all(fbdev->base.dev); - } -} |