![Ville Syrjälä](/assets/img/avatar_default.png)
drm_plane_helper_check_update() isn't a transitional helper, so let's rename it to drm_atomic_helper_check_plane_state() and move it into drm_atomic_helper.c. v2: Fix the WARNs about plane_state->crtc matching crtc_state->crtc Cc: Daniel Vetter <daniel@ffwll.ch> Suggested-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171101201619.6175-1-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
188 lines
5 KiB
C
188 lines
5 KiB
C
/*
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* Copyright (c) 2015 MediaTek Inc.
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* Author: CK Hu <ck.hu@mediatek.com>
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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 version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <drm/drmP.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_plane_helper.h>
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#include "mtk_drm_crtc.h"
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#include "mtk_drm_ddp_comp.h"
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#include "mtk_drm_drv.h"
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#include "mtk_drm_fb.h"
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#include "mtk_drm_gem.h"
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#include "mtk_drm_plane.h"
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static const u32 formats[] = {
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DRM_FORMAT_XRGB8888,
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DRM_FORMAT_ARGB8888,
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DRM_FORMAT_RGB565,
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DRM_FORMAT_UYVY,
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DRM_FORMAT_YUYV,
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};
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static void mtk_plane_reset(struct drm_plane *plane)
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{
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struct mtk_plane_state *state;
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if (plane->state) {
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__drm_atomic_helper_plane_destroy_state(plane->state);
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state = to_mtk_plane_state(plane->state);
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memset(state, 0, sizeof(*state));
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} else {
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state = kzalloc(sizeof(*state), GFP_KERNEL);
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if (!state)
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return;
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plane->state = &state->base;
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}
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state->base.plane = plane;
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state->pending.format = DRM_FORMAT_RGB565;
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}
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static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane)
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{
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struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state);
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struct mtk_plane_state *state;
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state = kzalloc(sizeof(*state), GFP_KERNEL);
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if (!state)
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return NULL;
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__drm_atomic_helper_plane_duplicate_state(plane, &state->base);
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WARN_ON(state->base.plane != plane);
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state->pending = old_state->pending;
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return &state->base;
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}
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static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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__drm_atomic_helper_plane_destroy_state(state);
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kfree(to_mtk_plane_state(state));
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}
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static const struct drm_plane_funcs mtk_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 = mtk_plane_reset,
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.atomic_duplicate_state = mtk_plane_duplicate_state,
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.atomic_destroy_state = mtk_drm_plane_destroy_state,
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};
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static int mtk_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_framebuffer *fb = state->fb;
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struct drm_crtc_state *crtc_state;
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struct drm_rect clip = { 0, };
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if (!fb)
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return 0;
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if (!mtk_fb_get_gem_obj(fb)) {
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DRM_DEBUG_KMS("buffer is null\n");
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return -EFAULT;
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}
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if (!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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clip.x2 = crtc_state->mode.hdisplay;
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clip.y2 = crtc_state->mode.vdisplay;
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return drm_atomic_helper_check_plane_state(state, crtc_state, &clip,
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DRM_PLANE_HELPER_NO_SCALING,
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DRM_PLANE_HELPER_NO_SCALING,
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true, true);
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}
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static void mtk_plane_atomic_update(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
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struct drm_crtc *crtc = plane->state->crtc;
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struct drm_framebuffer *fb = plane->state->fb;
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struct drm_gem_object *gem;
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struct mtk_drm_gem_obj *mtk_gem;
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unsigned int pitch, format;
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dma_addr_t addr;
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if (!crtc || WARN_ON(!fb))
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return;
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gem = mtk_fb_get_gem_obj(fb);
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mtk_gem = to_mtk_gem_obj(gem);
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addr = mtk_gem->dma_addr;
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pitch = fb->pitches[0];
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format = fb->format->format;
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addr += (plane->state->src.x1 >> 16) * fb->format->cpp[0];
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addr += (plane->state->src.y1 >> 16) * pitch;
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state->pending.enable = true;
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state->pending.pitch = pitch;
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state->pending.format = format;
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state->pending.addr = addr;
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state->pending.x = plane->state->dst.x1;
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state->pending.y = plane->state->dst.y1;
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state->pending.width = drm_rect_width(&plane->state->dst);
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state->pending.height = drm_rect_height(&plane->state->dst);
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wmb(); /* Make sure the above parameters are set before update */
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state->pending.dirty = true;
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}
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static void mtk_plane_atomic_disable(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
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state->pending.enable = false;
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wmb(); /* Make sure the above parameter is set before update */
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state->pending.dirty = true;
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}
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static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
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.atomic_check = mtk_plane_atomic_check,
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.atomic_update = mtk_plane_atomic_update,
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.atomic_disable = mtk_plane_atomic_disable,
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};
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int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
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unsigned long possible_crtcs, enum drm_plane_type type)
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{
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int err;
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err = drm_universal_plane_init(dev, plane, possible_crtcs,
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&mtk_plane_funcs, formats,
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ARRAY_SIZE(formats), NULL, type, NULL);
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if (err) {
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DRM_ERROR("failed to initialize plane\n");
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return err;
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}
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drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
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return 0;
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}
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