230 lines
6 KiB
C
230 lines
6 KiB
C
/*
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* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
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* Author:Mark Yao <mark.yao@rock-chips.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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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 <linux/kernel.h>
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#include <drm/drm.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include "rockchip_drm_drv.h"
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#include "rockchip_drm_fb.h"
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#include "rockchip_drm_gem.h"
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#include "rockchip_drm_psr.h"
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static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
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struct drm_file *file,
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unsigned int flags, unsigned int color,
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struct drm_clip_rect *clips,
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unsigned int num_clips)
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{
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rockchip_drm_psr_flush_all(fb->dev);
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return 0;
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}
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static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
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.destroy = drm_gem_fb_destroy,
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.create_handle = drm_gem_fb_create_handle,
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.dirty = rockchip_drm_fb_dirty,
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};
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static struct drm_framebuffer *
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rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object **obj, unsigned int num_planes)
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{
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struct drm_framebuffer *fb;
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int ret;
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int i;
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fb = kzalloc(sizeof(*fb), GFP_KERNEL);
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if (!fb)
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return ERR_PTR(-ENOMEM);
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drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
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for (i = 0; i < num_planes; i++)
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fb->obj[i] = obj[i];
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ret = drm_framebuffer_init(dev, fb, &rockchip_drm_fb_funcs);
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if (ret) {
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DRM_DEV_ERROR(dev->dev,
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"Failed to initialize framebuffer: %d\n",
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ret);
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kfree(fb);
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return ERR_PTR(ret);
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}
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return fb;
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}
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static struct drm_framebuffer *
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rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
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const struct drm_mode_fb_cmd2 *mode_cmd)
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{
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struct drm_framebuffer *fb;
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struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER];
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struct drm_gem_object *obj;
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unsigned int hsub;
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unsigned int vsub;
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int num_planes;
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int ret;
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int i;
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hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
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vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
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num_planes = min(drm_format_num_planes(mode_cmd->pixel_format),
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ROCKCHIP_MAX_FB_BUFFER);
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for (i = 0; i < num_planes; i++) {
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unsigned int width = mode_cmd->width / (i ? hsub : 1);
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unsigned int height = mode_cmd->height / (i ? vsub : 1);
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unsigned int min_size;
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obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
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if (!obj) {
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DRM_DEV_ERROR(dev->dev,
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"Failed to lookup GEM object\n");
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ret = -ENXIO;
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goto err_gem_object_unreference;
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}
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min_size = (height - 1) * mode_cmd->pitches[i] +
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mode_cmd->offsets[i] +
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width * drm_format_plane_cpp(mode_cmd->pixel_format, i);
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if (obj->size < min_size) {
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drm_gem_object_put_unlocked(obj);
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ret = -EINVAL;
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goto err_gem_object_unreference;
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}
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objs[i] = obj;
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}
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fb = rockchip_fb_alloc(dev, mode_cmd, objs, i);
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if (IS_ERR(fb)) {
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ret = PTR_ERR(fb);
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goto err_gem_object_unreference;
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}
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return fb;
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err_gem_object_unreference:
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for (i--; i >= 0; i--)
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drm_gem_object_put_unlocked(objs[i]);
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return ERR_PTR(ret);
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}
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static void
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rockchip_drm_psr_inhibit_get_state(struct drm_atomic_state *state)
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{
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struct drm_crtc *crtc;
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struct drm_crtc_state *crtc_state;
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struct drm_encoder *encoder;
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u32 encoder_mask = 0;
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int i;
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for_each_old_crtc_in_state(state, crtc, crtc_state, i) {
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encoder_mask |= crtc_state->encoder_mask;
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encoder_mask |= crtc->state->encoder_mask;
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}
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drm_for_each_encoder_mask(encoder, state->dev, encoder_mask)
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rockchip_drm_psr_inhibit_get(encoder);
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}
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static void
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rockchip_drm_psr_inhibit_put_state(struct drm_atomic_state *state)
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{
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struct drm_crtc *crtc;
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struct drm_crtc_state *crtc_state;
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struct drm_encoder *encoder;
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u32 encoder_mask = 0;
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int i;
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for_each_old_crtc_in_state(state, crtc, crtc_state, i) {
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encoder_mask |= crtc_state->encoder_mask;
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encoder_mask |= crtc->state->encoder_mask;
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}
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drm_for_each_encoder_mask(encoder, state->dev, encoder_mask)
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rockchip_drm_psr_inhibit_put(encoder);
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}
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static void
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rockchip_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state)
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{
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struct drm_device *dev = old_state->dev;
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rockchip_drm_psr_inhibit_get_state(old_state);
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drm_atomic_helper_commit_modeset_disables(dev, old_state);
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drm_atomic_helper_commit_modeset_enables(dev, old_state);
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drm_atomic_helper_commit_planes(dev, old_state,
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DRM_PLANE_COMMIT_ACTIVE_ONLY);
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rockchip_drm_psr_inhibit_put_state(old_state);
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drm_atomic_helper_commit_hw_done(old_state);
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drm_atomic_helper_wait_for_vblanks(dev, old_state);
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drm_atomic_helper_cleanup_planes(dev, old_state);
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}
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static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
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.atomic_commit_tail = rockchip_atomic_helper_commit_tail_rpm,
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};
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static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
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.fb_create = rockchip_user_fb_create,
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.output_poll_changed = drm_fb_helper_output_poll_changed,
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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struct drm_framebuffer *
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rockchip_drm_framebuffer_init(struct drm_device *dev,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object *obj)
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{
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struct drm_framebuffer *fb;
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fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
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if (IS_ERR(fb))
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return ERR_CAST(fb);
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return fb;
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}
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void rockchip_drm_mode_config_init(struct drm_device *dev)
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{
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dev->mode_config.min_width = 0;
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dev->mode_config.min_height = 0;
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/*
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* set max width and height as default value(4096x4096).
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* this value would be used to check framebuffer size limitation
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* at drm_mode_addfb().
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*/
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dev->mode_config.max_width = 4096;
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dev->mode_config.max_height = 4096;
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dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
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dev->mode_config.helper_private = &rockchip_mode_config_helpers;
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}
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