| // SPDX-License-Identifier: (GPL-2.0+ OR MIT) |
| /* |
| * Copyright (c) 2019 Amlogic, Inc. All rights reserved. |
| */ |
| |
| #include <drm/drm_atomic_helper.h> |
| |
| #include "meson_fb.h" |
| #include "meson_vpu.h" |
| |
| void am_meson_fb_destroy(struct drm_framebuffer *fb) |
| { |
| struct am_meson_fb *meson_fb = to_am_meson_fb(fb); |
| int i; |
| |
| for (i = 0; i < AM_MESON_GEM_OBJECT_NUM && meson_fb->bufp[i]; i++) |
| drm_gem_object_put_unlocked(&meson_fb->bufp[i]->base); |
| drm_framebuffer_cleanup(fb); |
| if (meson_fb->logo && meson_fb->logo->alloc_flag) |
| am_meson_free_logo_memory(); |
| DRM_DEBUG("meson_fb=0x%p,\n", meson_fb); |
| kfree(meson_fb); |
| } |
| |
| int am_meson_fb_create_handle(struct drm_framebuffer *fb, |
| struct drm_file *file_priv, |
| unsigned int *handle) |
| { |
| struct am_meson_fb *meson_fb = to_am_meson_fb(fb); |
| |
| if (meson_fb->bufp[0]) |
| return drm_gem_handle_create(file_priv, |
| &meson_fb->bufp[0]->base, handle); |
| else |
| return -EFAULT; |
| } |
| |
| struct drm_framebuffer_funcs am_meson_fb_funcs = { |
| .create_handle = am_meson_fb_create_handle, //must for fbdev emulate |
| .destroy = am_meson_fb_destroy, |
| }; |
| |
| struct drm_framebuffer * |
| am_meson_fb_alloc(struct drm_device *dev, |
| struct drm_mode_fb_cmd2 *mode_cmd, |
| struct drm_gem_object *obj) |
| { |
| struct am_meson_fb *meson_fb; |
| struct am_meson_gem_object *meson_gem; |
| int ret = 0; |
| |
| meson_fb = kzalloc(sizeof(*meson_fb), GFP_KERNEL); |
| if (!meson_fb) |
| return ERR_PTR(-ENOMEM); |
| |
| if (obj) { |
| meson_gem = container_of(obj, struct am_meson_gem_object, base); |
| meson_fb->bufp[0] = meson_gem; |
| } else { |
| meson_fb->bufp[0] = NULL; |
| } |
| drm_helper_mode_fill_fb_struct(dev, &meson_fb->base, mode_cmd); |
| |
| ret = drm_framebuffer_init(dev, &meson_fb->base, |
| &am_meson_fb_funcs); |
| if (ret) { |
| dev_err(dev->dev, "Failed to initialize framebuffer: %d\n", |
| ret); |
| goto err_free_fb; |
| } |
| DRM_INFO("meson_fb[id:%d,ref:%d]=0x%p,meson_fb->bufp[0]=0x%p\n", |
| meson_fb->base.base.id, |
| kref_read(&meson_fb->base.base.refcount), |
| meson_fb, meson_fb->bufp[0]); |
| |
| return &meson_fb->base; |
| |
| err_free_fb: |
| kfree(meson_fb); |
| return ERR_PTR(ret); |
| } |
| |
| struct drm_framebuffer *am_meson_fb_create(struct drm_device *dev, |
| struct drm_file *file_priv, |
| const struct drm_mode_fb_cmd2 *mode_cmd) |
| { |
| struct am_meson_fb *meson_fb = 0; |
| struct drm_gem_object *obj = 0; |
| struct am_meson_gem_object *meson_gem; |
| int ret, i; |
| |
| meson_fb = kzalloc(sizeof(*meson_fb), GFP_KERNEL); |
| if (!meson_fb) |
| return ERR_PTR(-ENOMEM); |
| |
| /* support multi handle .*/ |
| for (i = 0; i < AM_MESON_GEM_OBJECT_NUM && mode_cmd->handles[i]; i++) { |
| obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]); |
| if (!obj) { |
| dev_err(dev->dev, "Failed to lookup GEM handle\n"); |
| kfree(meson_fb); |
| return ERR_PTR(-ENOMEM); |
| } |
| meson_gem = container_of(obj, struct am_meson_gem_object, base); |
| meson_fb->bufp[i] = meson_gem; |
| } |
| |
| drm_helper_mode_fill_fb_struct(dev, &meson_fb->base, mode_cmd); |
| |
| ret = drm_framebuffer_init(dev, &meson_fb->base, &am_meson_fb_funcs); |
| if (ret) { |
| dev_err(dev->dev, |
| "Failed to initialize framebuffer: %d\n", |
| ret); |
| drm_gem_object_put(obj); |
| kfree(meson_fb); |
| return ERR_PTR(ret); |
| } |
| DRM_DEBUG("meson_fb[id:%d,ref:%d]=0x%px,meson_fb->bufp[%d-0]=0x%p\n", |
| meson_fb->base.base.id, |
| kref_read(&meson_fb->base.base.refcount), |
| meson_fb, i, meson_fb->bufp[0]); |
| |
| return &meson_fb->base; |
| } |
| |
| struct drm_framebuffer * |
| am_meson_drm_framebuffer_init(struct drm_device *dev, |
| struct drm_mode_fb_cmd2 *mode_cmd, |
| struct drm_gem_object *obj) |
| { |
| struct drm_framebuffer *fb; |
| |
| fb = am_meson_fb_alloc(dev, mode_cmd, obj); |
| if (IS_ERR(fb)) |
| return NULL; |
| |
| return fb; |
| } |