/* * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd * Author:Mark Yao * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include "rockchip_drm_drv.h" #include "rockchip_drm_fb.h" #include "rockchip_drm_gem.h" #include "rockchip_drm_psr.h" #define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb) struct rockchip_drm_fb { struct drm_framebuffer fb; struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER]; }; struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb, unsigned int plane) { struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb); if (plane >= ROCKCHIP_MAX_FB_BUFFER) return NULL; return rk_fb->obj[plane]; } static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb) { struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb); int i; for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++) drm_gem_object_unreference_unlocked(rockchip_fb->obj[i]); drm_framebuffer_cleanup(fb); kfree(rockchip_fb); } static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb, struct drm_file *file_priv, unsigned int *handle) { struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb); return drm_gem_handle_create(file_priv, rockchip_fb->obj[0], handle); } static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb, struct drm_file *file, unsigned int flags, unsigned int color, struct drm_clip_rect *clips, unsigned int num_clips) { rockchip_drm_psr_flush_all(fb->dev); return 0; } static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = { .destroy = rockchip_drm_fb_destroy, .create_handle = rockchip_drm_fb_create_handle, .dirty = rockchip_drm_fb_dirty, }; static struct rockchip_drm_fb * rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **obj, unsigned int num_planes) { struct rockchip_drm_fb *rockchip_fb; int ret; int i; rockchip_fb = kzalloc(sizeof(*rockchip_fb), GFP_KERNEL); if (!rockchip_fb) return ERR_PTR(-ENOMEM); drm_helper_mode_fill_fb_struct(&rockchip_fb->fb, mode_cmd); for (i = 0; i < num_planes; i++) rockchip_fb->obj[i] = obj[i]; ret = drm_framebuffer_init(dev, &rockchip_fb->fb, &rockchip_drm_fb_funcs); if (ret) { dev_err(dev->dev, "Failed to initialize framebuffer: %d\n", ret); kfree(rockchip_fb); return ERR_PTR(ret); } return rockchip_fb; } static struct drm_framebuffer * rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd) { struct rockchip_drm_fb *rockchip_fb; struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER]; struct drm_gem_object *obj; unsigned int hsub; unsigned int vsub; int num_planes; int ret; int i; hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format); vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format); num_planes = min(drm_format_num_planes(mode_cmd->pixel_format), ROCKCHIP_MAX_FB_BUFFER); for (i = 0; i < num_planes; i++) { unsigned int width = mode_cmd->width / (i ? hsub : 1); unsigned int height = mode_cmd->height / (i ? vsub : 1); unsigned int min_size; obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]); if (!obj) { dev_err(dev->dev, "Failed to lookup GEM object\n"); ret = -ENXIO; goto err_gem_object_unreference; } min_size = (height - 1) * mode_cmd->pitches[i] + mode_cmd->offsets[i] + width * drm_format_plane_cpp(mode_cmd->pixel_format, i); if (obj->size < min_size) { drm_gem_object_unreference_unlocked(obj); ret = -EINVAL; goto err_gem_object_unreference; } objs[i] = obj; } rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, objs, i); if (IS_ERR(rockchip_fb)) { ret = PTR_ERR(rockchip_fb); goto err_gem_object_unreference; } return &rockchip_fb->fb; err_gem_object_unreference: for (i--; i >= 0; i--) drm_gem_object_unreference_unlocked(objs[i]); return ERR_PTR(ret); } static void rockchip_drm_output_poll_changed(struct drm_device *dev) { struct rockchip_drm_private *private = dev->dev_private; struct drm_fb_helper *fb_helper = &private->fbdev_helper; if (fb_helper) drm_fb_helper_hotplug_event(fb_helper); } static void rockchip_atomic_commit_tail(struct drm_atomic_state *state) { struct drm_device *dev = state->dev; drm_atomic_helper_commit_modeset_disables(dev, state); drm_atomic_helper_commit_modeset_enables(dev, state); drm_atomic_helper_commit_planes(dev, state, DRM_PLANE_COMMIT_ACTIVE_ONLY); drm_atomic_helper_commit_hw_done(state); drm_atomic_helper_wait_for_vblanks(dev, state); drm_atomic_helper_cleanup_planes(dev, state); } static struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = { .atomic_commit_tail = rockchip_atomic_commit_tail, }; static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = { .fb_create = rockchip_user_fb_create, .output_poll_changed = rockchip_drm_output_poll_changed, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; struct drm_framebuffer * rockchip_drm_framebuffer_init(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object *obj) { struct rockchip_drm_fb *rockchip_fb; rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1); if (IS_ERR(rockchip_fb)) return NULL; return &rockchip_fb->fb; } void rockchip_drm_mode_config_init(struct drm_device *dev) { dev->mode_config.min_width = 0; dev->mode_config.min_height = 0; /* * set max width and height as default value(4096x4096). * this value would be used to check framebuffer size limitation * at drm_mode_addfb(). */ dev->mode_config.max_width = 4096; dev->mode_config.max_height = 4096; dev->mode_config.funcs = &rockchip_drm_mode_config_funcs; dev->mode_config.helper_private = &rockchip_mode_config_helpers; }