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90bb087
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linux
/
drivers
/
gpu
/
drm
/
mediatek
/
mtk_drm_plane.c
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273 lines (226 loc) · 7.63 KB
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linux
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drivers
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gpu
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drm
/
mediatek
/
mtk_drm_plane.c
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// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2015 MediaTek Inc. * Author: CK Hu <ck.hu@mediatek.com> */ #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_atomic_uapi.h> #include <drm/drm_blend.h> #include <drm/drm_fourcc.h> #include <drm/drm_framebuffer.h> #include <drm/drm_gem_atomic_helper.h> #include <drm/drm_plane_helper.h> #include "mtk_drm_crtc.h" #include "mtk_drm_ddp_comp.h" #include "mtk_drm_drv.h" #include "mtk_drm_gem.h" #include "mtk_drm_plane.h" static const u32 formats[] = { DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_BGRX8888, DRM_FORMAT_BGRA8888, DRM_FORMAT_ABGR8888, DRM_FORMAT_XBGR8888, DRM_FORMAT_RGB888, DRM_FORMAT_BGR888, DRM_FORMAT_RGB565, DRM_FORMAT_UYVY, DRM_FORMAT_YUYV, }; static void mtk_plane_reset(struct drm_plane *plane) { struct mtk_plane_state *state; if (plane->state) { __drm_atomic_helper_plane_destroy_state(plane->state); state = to_mtk_plane_state(plane->state); memset(state, 0, sizeof(*state)); } else { state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) return; } __drm_atomic_helper_plane_reset(plane, &state->base); state->base.plane = plane; state->pending.format = DRM_FORMAT_RGB565; } static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane) { struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state); struct mtk_plane_state *state; state = kmalloc(sizeof(*state), GFP_KERNEL); if (!state) return NULL; __drm_atomic_helper_plane_duplicate_state(plane, &state->base); WARN_ON(state->base.plane != plane); state->pending = old_state->pending; return &state->base; } static void mtk_drm_plane_destroy_state(struct drm_plane *plane, struct drm_plane_state *state) { __drm_atomic_helper_plane_destroy_state(state); kfree(to_mtk_plane_state(state)); } static int mtk_plane_atomic_async_check(struct drm_plane *plane, struct drm_atomic_state *state) { struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane); struct drm_crtc_state *crtc_state; int ret; if (plane != new_plane_state->crtc->cursor) return -EINVAL; if (!plane->state) return -EINVAL; if (!plane->state->fb) return -EINVAL; ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane, to_mtk_plane_state(new_plane_state)); if (ret) return ret; if (state) crtc_state = drm_atomic_get_existing_crtc_state(state, new_plane_state->crtc); else /* Special case for asynchronous cursor updates. */ crtc_state = new_plane_state->crtc->state; return drm_atomic_helper_check_plane_state(plane->state, crtc_state, DRM_PLANE_HELPER_NO_SCALING, DRM_PLANE_HELPER_NO_SCALING, true, true); } static void mtk_plane_update_new_state(struct drm_plane_state *new_state, struct mtk_plane_state *mtk_plane_state) { struct drm_framebuffer *fb = new_state->fb; struct drm_gem_object *gem; struct mtk_drm_gem_obj *mtk_gem; unsigned int pitch, format; dma_addr_t addr; gem = fb->obj[0]; mtk_gem = to_mtk_gem_obj(gem); addr = mtk_gem->dma_addr; pitch = fb->pitches[0]; format = fb->format->format; addr += (new_state->src.x1 >> 16) * fb->format->cpp[0]; addr += (new_state->src.y1 >> 16) * pitch; mtk_plane_state->pending.enable = true; mtk_plane_state->pending.pitch = pitch; mtk_plane_state->pending.format = format; mtk_plane_state->pending.addr = addr; mtk_plane_state->pending.x = new_state->dst.x1; mtk_plane_state->pending.y = new_state->dst.y1; mtk_plane_state->pending.width = drm_rect_width(&new_state->dst); mtk_plane_state->pending.height = drm_rect_height(&new_state->dst); mtk_plane_state->pending.rotation = new_state->rotation; } static void mtk_plane_atomic_async_update(struct drm_plane *plane, struct drm_atomic_state *state) { struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); struct mtk_plane_state *new_plane_state = to_mtk_plane_state(plane->state); plane->state->crtc_x = new_state->crtc_x; plane->state->crtc_y = new_state->crtc_y; plane->state->crtc_h = new_state->crtc_h; plane->state->crtc_w = new_state->crtc_w; plane->state->src_x = new_state->src_x; plane->state->src_y = new_state->src_y; plane->state->src_h = new_state->src_h; plane->state->src_w = new_state->src_w; swap(plane->state->fb, new_state->fb); mtk_plane_update_new_state(new_state, new_plane_state); wmb(); /* Make sure the above parameters are set before update */ new_plane_state->pending.async_dirty = true; mtk_drm_crtc_async_update(new_state->crtc, plane, state); } static const struct drm_plane_funcs mtk_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = drm_plane_cleanup, .reset = mtk_plane_reset, .atomic_duplicate_state = mtk_plane_duplicate_state, .atomic_destroy_state = mtk_drm_plane_destroy_state, }; static int mtk_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state) { struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane); struct drm_framebuffer *fb = new_plane_state->fb; struct drm_crtc_state *crtc_state; int ret; if (!fb) return 0; if (WARN_ON(!new_plane_state->crtc)) return 0; ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane, to_mtk_plane_state(new_plane_state)); if (ret) return ret; crtc_state = drm_atomic_get_crtc_state(state, new_plane_state->crtc); if (IS_ERR(crtc_state)) return PTR_ERR(crtc_state); return drm_atomic_helper_check_plane_state(new_plane_state, crtc_state, DRM_PLANE_HELPER_NO_SCALING, DRM_PLANE_HELPER_NO_SCALING, true, true); } static void mtk_plane_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state) { struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state); mtk_plane_state->pending.enable = false; wmb(); /* Make sure the above parameter is set before update */ mtk_plane_state->pending.dirty = true; } static void mtk_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state) { struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state); if (!new_state->crtc || WARN_ON(!new_state->fb)) return; if (!new_state->visible) { mtk_plane_atomic_disable(plane, state); return; } mtk_plane_update_new_state(new_state, mtk_plane_state); wmb(); /* Make sure the above parameters are set before update */ mtk_plane_state->pending.dirty = true; } static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = { .atomic_check = mtk_plane_atomic_check, .atomic_update = mtk_plane_atomic_update, .atomic_disable = mtk_plane_atomic_disable, .atomic_async_update = mtk_plane_atomic_async_update, .atomic_async_check = mtk_plane_atomic_async_check, }; int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, unsigned long possible_crtcs, enum drm_plane_type type, unsigned int supported_rotations) { int err; err = drm_universal_plane_init(dev, plane, possible_crtcs, &mtk_plane_funcs, formats, ARRAY_SIZE(formats), NULL, type, NULL); if (err) { DRM_ERROR("failed to initialize plane\n"); return err; } if (supported_rotations & ~DRM_MODE_ROTATE_0) { err = drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0, supported_rotations); if (err) DRM_INFO("Create rotation property failed\n"); } drm_plane_helper_add(plane, &mtk_plane_helper_funcs); return 0; }
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