acf24a395c
Converting a driver to the atomic interface can be a daunting undertaking. One of the prerequisites is to have full universal planes support. To make that transition a bit easier this patch provides plane helpers which use the new atomic helper callbacks just only for the plane changes. This way the plane update functionality can be tested without being forced to convert everything at once. Of course a real atomic update capable driver will implement the all plane properties through the atomic interface, so these helpers are mostly transitional. But they can be used to enable proper universal plane support, especially once the crtc helpers have also been adapted. v2: Use ->atomic_duplicate_state if available. v3: Don't forget to call ->atomic_destroy_state if available. v4: Fixup kerneldoc, reported by Paulo. v5: Extract a common plane_commit helper and fix some bugs in the plane_state setup of the plane_disable implementation. v6: Fix issues with the cleanup of the old fb. Since transitional helpers can be mixed we need to assume that the old fb has been set up by a legacy path (e.g. set_config or page_flip when the primary plane is converted to use these functions already). Hence pass an additional old_fb parameter to plane_commit to do that cleanup work correctly. v7: - Fix spurious WARNING (crtc helpers really love to disable stuff harder) and fix array index bonghits. - Correctly handle the lack of plane->state object, necessary for transitional use. - Don't indicate failure if drm_vblank_get doesn't work - that's expected when the pipe is in dpms off mode. v8: Review from Sean: - s/fail/out/ to make the meaning of a label more clear. - spelling fix in the commit message. Cc: Paulo Zanoni <przanoni@gmail.com> Cc: Sean Paul <seanpaul@chromium.org> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
107 lines
3.7 KiB
C
107 lines
3.7 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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extern int drm_crtc_init(struct drm_device *dev,
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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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*
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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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void (*cleanup_fb)(struct drm_plane *plane,
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struct drm_framebuffer *fb);
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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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};
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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 = (void *)funcs;
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}
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extern 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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extern 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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extern int drm_primary_helper_disable(struct drm_plane *plane);
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extern 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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extern struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
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const uint32_t *formats,
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int num_formats);
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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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#endif
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