mirror of https://gitee.com/openkylin/linux.git
116 lines
4.2 KiB
C
116 lines
4.2 KiB
C
/*
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* Copyright (C) 2011-2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef DRM_PLANE_HELPER_H
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#define DRM_PLANE_HELPER_H
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#include <drm/drm_rect.h>
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#include <drm/drm_crtc.h>
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/*
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* Drivers that don't allow primary plane scaling may pass this macro in place
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* of the min/max scale parameters of the update checker function.
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*
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* Due to src being in 16.16 fixed point and dest being in integer pixels,
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* 1<<16 represents no scaling.
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*/
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#define DRM_PLANE_HELPER_NO_SCALING (1<<16)
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/**
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* DOC: plane helpers
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*
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* Helper functions to assist with creation and handling of CRTC primary
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* planes.
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*/
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int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
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const struct drm_crtc_funcs *funcs);
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/**
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* drm_plane_helper_funcs - helper operations for CRTCs
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* @prepare_fb: prepare a framebuffer for use by the plane
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* @cleanup_fb: cleanup a framebuffer when it's no longer used by the plane
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* @atomic_check: check that a given atomic state is valid and can be applied
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* @atomic_update: apply an atomic state to the plane (mandatory)
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* @atomic_disable: disable the plane
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*
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* The helper operations are called by the mid-layer CRTC helper.
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*/
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struct drm_plane_helper_funcs {
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int (*prepare_fb)(struct drm_plane *plane,
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struct drm_framebuffer *fb,
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const struct drm_plane_state *new_state);
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void (*cleanup_fb)(struct drm_plane *plane,
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struct drm_framebuffer *fb,
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const struct drm_plane_state *old_state);
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int (*atomic_check)(struct drm_plane *plane,
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struct drm_plane_state *state);
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void (*atomic_update)(struct drm_plane *plane,
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struct drm_plane_state *old_state);
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void (*atomic_disable)(struct drm_plane *plane,
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struct drm_plane_state *old_state);
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};
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static inline void drm_plane_helper_add(struct drm_plane *plane,
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const struct drm_plane_helper_funcs *funcs)
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{
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plane->helper_private = funcs;
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}
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int drm_plane_helper_check_update(struct drm_plane *plane,
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struct drm_crtc *crtc,
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struct drm_framebuffer *fb,
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struct drm_rect *src,
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struct drm_rect *dest,
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const struct drm_rect *clip,
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int min_scale,
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int max_scale,
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bool can_position,
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bool can_update_disabled,
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bool *visible);
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int drm_primary_helper_update(struct drm_plane *plane,
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struct drm_crtc *crtc,
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struct drm_framebuffer *fb,
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int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y,
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uint32_t src_w, uint32_t src_h);
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int drm_primary_helper_disable(struct drm_plane *plane);
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void drm_primary_helper_destroy(struct drm_plane *plane);
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extern const struct drm_plane_funcs drm_primary_helper_funcs;
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int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
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struct drm_framebuffer *fb,
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int crtc_x, int crtc_y,
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unsigned int crtc_w, unsigned int crtc_h,
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uint32_t src_x, uint32_t src_y,
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uint32_t src_w, uint32_t src_h);
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int drm_plane_helper_disable(struct drm_plane *plane);
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/* For use by drm_crtc_helper.c */
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int drm_plane_helper_commit(struct drm_plane *plane,
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struct drm_plane_state *plane_state,
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struct drm_framebuffer *old_fb);
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#endif
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