d7734b7409
Call atomic_helper_check_plane_state to clip plane coordinates. Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/b8c1bfed8b5720cc4794ace41cf49af66c99a48c.1532446182.git.hamohammed.sa@gmail.com
121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include "vkms_drv.h"
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#include <drm/drm_plane_helper.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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static const struct drm_plane_funcs vkms_plane_funcs = {
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.update_plane = drm_atomic_helper_update_plane,
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.disable_plane = drm_atomic_helper_disable_plane,
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.destroy = drm_plane_cleanup,
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.reset = drm_atomic_helper_plane_reset,
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.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
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};
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static void vkms_primary_plane_update(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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}
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static int vkms_plane_atomic_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct drm_crtc_state *crtc_state;
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int ret;
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if (!state->fb | !state->crtc)
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return 0;
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crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
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if (IS_ERR(crtc_state))
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return PTR_ERR(crtc_state);
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ret = drm_atomic_helper_check_plane_state(state, crtc_state,
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DRM_PLANE_HELPER_NO_SCALING,
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DRM_PLANE_HELPER_NO_SCALING,
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false, true);
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if (ret != 0)
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return ret;
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/* for now primary plane must be visible and full screen */
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if (!state->visible)
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return -EINVAL;
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return 0;
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}
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static int vkms_prepare_fb(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct drm_gem_object *gem_obj;
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struct vkms_gem_object *vkms_obj;
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int ret;
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if (!state->fb)
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return 0;
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gem_obj = drm_gem_fb_get_obj(state->fb, 0);
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vkms_obj = drm_gem_to_vkms_gem(gem_obj);
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ret = vkms_gem_vmap(gem_obj);
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if (ret)
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DRM_ERROR("vmap failed: %d\n", ret);
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return drm_gem_fb_prepare_fb(plane, state);
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}
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static void vkms_cleanup_fb(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct drm_gem_object *gem_obj;
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if (!old_state->fb)
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return;
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gem_obj = drm_gem_fb_get_obj(old_state->fb, 0);
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vkms_gem_vunmap(gem_obj);
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}
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static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {
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.atomic_update = vkms_primary_plane_update,
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.atomic_check = vkms_plane_atomic_check,
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.prepare_fb = vkms_prepare_fb,
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.cleanup_fb = vkms_cleanup_fb,
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};
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struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev)
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{
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struct drm_device *dev = &vkmsdev->drm;
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struct drm_plane *plane;
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const u32 *formats;
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int ret, nformats;
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plane = kzalloc(sizeof(*plane), GFP_KERNEL);
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if (!plane)
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return ERR_PTR(-ENOMEM);
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formats = vkms_formats;
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nformats = ARRAY_SIZE(vkms_formats);
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ret = drm_universal_plane_init(dev, plane, 0,
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&vkms_plane_funcs,
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formats, nformats,
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NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
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if (ret) {
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kfree(plane);
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return ERR_PTR(ret);
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}
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drm_plane_helper_add(plane, &vkms_primary_helper_funcs);
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return plane;
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}
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