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1// SPDX-License-Identifier: MIT2/*3 * Copyright © 2023 Intel Corporation4 */5 6#include "i915_drv.h"7#include "intel_crtc.h"8#include "intel_display_types.h"9#include "intel_sprite_uapi.h"10 11static bool has_dst_key_in_primary_plane(struct drm_i915_private *dev_priv)12{13 return DISPLAY_VER(dev_priv) >= 9;14}15 16static void intel_plane_set_ckey(struct intel_plane_state *plane_state,17 const struct drm_intel_sprite_colorkey *set)18{19 struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);20 struct drm_i915_private *dev_priv = to_i915(plane->base.dev);21 struct drm_intel_sprite_colorkey *key = &plane_state->ckey;22 23 *key = *set;24 25 /*26 * We want src key enabled on the27 * sprite and not on the primary.28 */29 if (plane->id == PLANE_PRIMARY &&30 set->flags & I915_SET_COLORKEY_SOURCE)31 key->flags = 0;32 33 /*34 * On SKL+ we want dst key enabled on35 * the primary and not on the sprite.36 */37 if (DISPLAY_VER(dev_priv) >= 9 && plane->id != PLANE_PRIMARY &&38 set->flags & I915_SET_COLORKEY_DESTINATION)39 key->flags = 0;40}41 42int intel_sprite_set_colorkey_ioctl(struct drm_device *dev, void *data,43 struct drm_file *file_priv)44{45 struct drm_i915_private *dev_priv = to_i915(dev);46 struct drm_intel_sprite_colorkey *set = data;47 struct drm_plane *plane;48 struct drm_plane_state *plane_state;49 struct drm_atomic_state *state;50 struct drm_modeset_acquire_ctx ctx;51 int ret = 0;52 53 /* ignore the pointless "none" flag */54 set->flags &= ~I915_SET_COLORKEY_NONE;55 56 if (set->flags & ~(I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))57 return -EINVAL;58 59 /* Make sure we don't try to enable both src & dest simultaneously */60 if ((set->flags & (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE)) == (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))61 return -EINVAL;62 63 if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&64 set->flags & I915_SET_COLORKEY_DESTINATION)65 return -EINVAL;66 67 plane = drm_plane_find(dev, file_priv, set->plane_id);68 if (!plane || plane->type != DRM_PLANE_TYPE_OVERLAY)69 return -ENOENT;70 71 /*72 * SKL+ only plane 2 can do destination keying against plane 1.73 * Also multiple planes can't do destination keying on the same74 * pipe simultaneously.75 */76 if (DISPLAY_VER(dev_priv) >= 9 &&77 to_intel_plane(plane)->id >= PLANE_3 &&78 set->flags & I915_SET_COLORKEY_DESTINATION)79 return -EINVAL;80 81 drm_modeset_acquire_init(&ctx, 0);82 83 state = drm_atomic_state_alloc(plane->dev);84 if (!state) {85 ret = -ENOMEM;86 goto out;87 }88 state->acquire_ctx = &ctx;89 to_intel_atomic_state(state)->internal = true;90 91 while (1) {92 plane_state = drm_atomic_get_plane_state(state, plane);93 ret = PTR_ERR_OR_ZERO(plane_state);94 if (!ret)95 intel_plane_set_ckey(to_intel_plane_state(plane_state), set);96 97 /*98 * On some platforms we have to configure99 * the dst colorkey on the primary plane.100 */101 if (!ret && has_dst_key_in_primary_plane(dev_priv)) {102 struct intel_crtc *crtc =103 intel_crtc_for_pipe(dev_priv,104 to_intel_plane(plane)->pipe);105 106 plane_state = drm_atomic_get_plane_state(state,107 crtc->base.primary);108 ret = PTR_ERR_OR_ZERO(plane_state);109 if (!ret)110 intel_plane_set_ckey(to_intel_plane_state(plane_state), set);111 }112 113 if (!ret)114 ret = drm_atomic_commit(state);115 116 if (ret != -EDEADLK)117 break;118 119 drm_atomic_state_clear(state);120 drm_modeset_backoff(&ctx);121 }122 123 drm_atomic_state_put(state);124out:125 drm_modeset_drop_locks(&ctx);126 drm_modeset_acquire_fini(&ctx);127 return ret;128}129