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349 lines
8.9 KiB
349 lines
8.9 KiB
7 years ago
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/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
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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 and
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* only version 2 as 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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*/
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#define pr_fmt(fmt) "%s: " fmt, __func__
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/major.h>
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#include <linux/pm_runtime.h>
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#include <linux/uaccess.h>
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#include <linux/delay.h>
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#include <linux/msm_mdp.h>
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#include <linux/memblock.h>
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#include <linux/file.h>
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#include <soc/qcom/event_timer.h>
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#include "mdp3_ctrl.h"
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#include "mdp3.h"
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#include "mdp3_ppp.h"
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#include "mdp3_ctrl.h"
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#include "mdss_fb.h"
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#include "mdss_sync.h"
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enum {
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MDP3_RELEASE_FENCE = 0,
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MDP3_RETIRE_FENCE,
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};
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static struct mdss_fence *__mdp3_create_fence(struct msm_fb_data_type *mfd,
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struct msm_sync_pt_data *sync_pt_data, u32 fence_type,
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int *fence_fd, int value)
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{
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struct mdss_fence *sync_fence = NULL;
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char fence_name[32];
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struct mdp3_session_data *mdp3_session;
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mdp3_session = (struct mdp3_session_data *)mfd->mdp.private1;
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if (fence_type == MDP3_RETIRE_FENCE)
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snprintf(fence_name, sizeof(fence_name), "fb%d_retire",
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mfd->index);
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else
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snprintf(fence_name, sizeof(fence_name), "fb%d_release",
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mfd->index);
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if ((fence_type == MDP3_RETIRE_FENCE) &&
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(mfd->panel.type == MIPI_CMD_PANEL)) {
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if (sync_pt_data->timeline_retire) {
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value = sync_pt_data->timeline_retire->value + 1 +
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mdp3_session->retire_cnt++;
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sync_fence = mdss_fb_sync_get_fence(
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sync_pt_data->timeline_retire,
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fence_name, value);
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} else {
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return ERR_PTR(-EPERM);
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}
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} else {
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if (fence_type == MDP3_RETIRE_FENCE)
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sync_fence = mdss_fb_sync_get_fence(
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sync_pt_data->timeline_retire,
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fence_name, value);
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else
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sync_fence = mdss_fb_sync_get_fence(
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sync_pt_data->timeline,
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fence_name, value);
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}
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if (IS_ERR_OR_NULL(sync_fence)) {
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pr_err("%s: unable to retrieve release fence\n", fence_name);
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goto end;
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}
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*fence_fd = mdss_get_sync_fence_fd(sync_fence);
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if (*fence_fd < 0) {
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pr_err("%s: get_unused_fd_flags failed error:0x%x\n",
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fence_name, *fence_fd);
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mdss_put_sync_fence(sync_fence);
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sync_fence = NULL;
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goto end;
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}
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pr_debug("%s:val=%d\n", mdss_get_sync_fence_name(sync_fence), value);
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end:
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return sync_fence;
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}
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/*
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* __handle_buffer_fences() - copy sync fences and return release
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* fence to caller.
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*
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* This function copies all input sync fences to acquire fence array and
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* returns release fences to caller. It acts like buff_sync ioctl.
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*/
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static int __mdp3_handle_buffer_fences(struct msm_fb_data_type *mfd,
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struct mdp_layer_commit_v1 *commit, struct mdp_input_layer *layer_list)
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{
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struct mdss_fence *fence, *release_fence, *retire_fence;
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struct msm_sync_pt_data *sync_pt_data = NULL;
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struct mdp_input_layer *layer;
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int value;
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u32 acq_fen_count, i, ret = 0;
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u32 layer_count = commit->input_layer_cnt;
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sync_pt_data = &mfd->mdp_sync_pt_data;
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if (!sync_pt_data) {
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pr_err("sync point data are NULL\n");
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return -EINVAL;
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}
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i = mdss_fb_wait_for_fence(sync_pt_data);
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if (i > 0)
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pr_warn("%s: waited on %d active fences\n",
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sync_pt_data->fence_name, i);
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mutex_lock(&sync_pt_data->sync_mutex);
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for (i = 0, acq_fen_count = 0; i < layer_count; i++) {
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layer = &layer_list[i];
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if (layer->buffer.fence < 0)
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continue;
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fence = mdss_get_fd_sync_fence(layer->buffer.fence);
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if (!fence) {
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pr_err("%s: sync fence get failed! fd=%d\n",
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sync_pt_data->fence_name, layer->buffer.fence);
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ret = -EINVAL;
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goto sync_fence_err;
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} else {
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sync_pt_data->acq_fen[acq_fen_count++] = fence;
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}
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}
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sync_pt_data->acq_fen_cnt = acq_fen_count;
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if (ret)
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goto sync_fence_err;
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value = sync_pt_data->threshold +
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atomic_read(&sync_pt_data->commit_cnt);
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release_fence = __mdp3_create_fence(mfd, sync_pt_data,
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MDP3_RELEASE_FENCE, &commit->release_fence, value);
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if (IS_ERR_OR_NULL(release_fence)) {
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pr_err("unable to retrieve release fence\n");
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ret = PTR_ERR(release_fence);
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goto release_fence_err;
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}
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retire_fence = __mdp3_create_fence(mfd, sync_pt_data,
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MDP3_RETIRE_FENCE, &commit->retire_fence, value);
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if (IS_ERR_OR_NULL(retire_fence)) {
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pr_err("unable to retrieve retire fence\n");
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ret = PTR_ERR(retire_fence);
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goto retire_fence_err;
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}
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mutex_unlock(&sync_pt_data->sync_mutex);
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return ret;
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retire_fence_err:
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put_unused_fd(commit->release_fence);
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mdss_put_sync_fence(release_fence);
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release_fence_err:
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commit->retire_fence = -1;
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commit->release_fence = -1;
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sync_fence_err:
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for (i = 0; i < sync_pt_data->acq_fen_cnt; i++)
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mdss_put_sync_fence(sync_pt_data->acq_fen[i]);
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sync_pt_data->acq_fen_cnt = 0;
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mutex_unlock(&sync_pt_data->sync_mutex);
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return ret;
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}
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/*
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* __map_layer_buffer() - map input layer buffer
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*
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*/
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static int __mdp3_map_layer_buffer(struct msm_fb_data_type *mfd,
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struct mdp_input_layer *input_layer)
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{
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struct mdp3_session_data *mdp3_session = mfd->mdp.private1;
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struct mdp3_dma *dma = mdp3_session->dma;
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struct mdp_input_layer *layer = NULL;
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struct mdp_layer_buffer *buffer;
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struct msmfb_data img;
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bool is_panel_type_cmd = false;
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struct mdp3_img_data data;
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int rc = 0;
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layer = &input_layer[0];
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buffer = &layer->buffer;
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/* current implementation only supports one plane mapping */
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if (buffer->planes[0].fd < 0) {
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pr_err("invalid file descriptor for layer buffer\n");
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goto err;
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}
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memset(&img, 0, sizeof(img));
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img.memory_id = buffer->planes[0].fd;
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img.offset = buffer->planes[0].offset;
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memset(&data, 0, sizeof(struct mdp3_img_data));
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if (mfd->panel.type == MIPI_CMD_PANEL)
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is_panel_type_cmd = true;
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if (is_panel_type_cmd) {
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rc = mdp3_iommu_enable(MDP3_CLIENT_DMA_P);
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if (rc) {
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pr_err("fail to enable iommu\n");
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return rc;
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}
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}
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rc = mdp3_get_img(&img, &data, MDP3_CLIENT_DMA_P);
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if (rc) {
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pr_err("fail to get overlay buffer\n");
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goto err;
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}
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if (data.len < dma->source_config.stride * dma->source_config.height) {
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pr_err("buf size(0x%lx) is smaller than dma config(0x%x)\n",
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data.len, (dma->source_config.stride *
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dma->source_config.height));
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mdp3_put_img(&data, MDP3_CLIENT_DMA_P);
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rc = -EINVAL;
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goto err;
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}
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rc = mdp3_bufq_push(&mdp3_session->bufq_in, &data);
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if (rc) {
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pr_err("fail to queue the overlay buffer, buffer drop\n");
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mdp3_put_img(&data, MDP3_CLIENT_DMA_P);
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goto err;
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}
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rc = 0;
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err:
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if (is_panel_type_cmd)
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mdp3_iommu_disable(MDP3_CLIENT_DMA_P);
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return rc;
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}
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int mdp3_layer_pre_commit(struct msm_fb_data_type *mfd,
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struct file *file, struct mdp_layer_commit_v1 *commit)
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{
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int ret;
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struct mdp_input_layer *layer, *layer_list;
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struct mdp3_session_data *mdp3_session;
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struct mdp3_dma *dma;
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int layer_count = commit->input_layer_cnt;
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int stride, format;
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/* Handle NULL commit */
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if (!layer_count) {
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pr_debug("Handle NULL commit\n");
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return 0;
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}
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mdp3_session = mfd->mdp.private1;
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dma = mdp3_session->dma;
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mutex_lock(&mdp3_session->lock);
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mdp3_bufq_deinit(&mdp3_session->bufq_in);
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layer_list = commit->input_layers;
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layer = &layer_list[0];
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stride = layer->buffer.width * ppp_bpp(layer->buffer.format);
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format = mdp3_ctrl_get_source_format(layer->buffer.format);
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pr_debug("stride:%d layer_width:%d", stride, layer->buffer.width);
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if ((dma->source_config.format != format) ||
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(dma->source_config.stride != stride)) {
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dma->source_config.format = format;
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dma->source_config.stride = stride;
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dma->output_config.pack_pattern =
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mdp3_ctrl_get_pack_pattern(layer->buffer.format);
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dma->update_src_cfg = true;
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}
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mdp3_session->overlay.id = 1;
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ret = __mdp3_handle_buffer_fences(mfd, commit, layer_list);
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if (ret) {
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pr_err("Failed to handle buffer fences\n");
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mutex_unlock(&mdp3_session->lock);
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return ret;
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}
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ret = __mdp3_map_layer_buffer(mfd, layer);
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if (ret) {
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pr_err("Failed to map buffer\n");
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mutex_unlock(&mdp3_session->lock);
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return ret;
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}
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pr_debug("mdp3 precommit ret = %d\n", ret);
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mutex_unlock(&mdp3_session->lock);
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return ret;
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}
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/*
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* mdp3_layer_atomic_validate() - validate input layers
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* @mfd: Framebuffer data structure for display
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* @commit: Commit version-1 structure for display
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*
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* This function validates only input layers received from client. It
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* does perform any validation for mdp_output_layer defined for writeback
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* display.
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*/
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int mdp3_layer_atomic_validate(struct msm_fb_data_type *mfd,
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struct file *file, struct mdp_layer_commit_v1 *commit)
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{
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struct mdp3_session_data *mdp3_session;
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if (!mfd || !commit) {
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pr_err("invalid input params\n");
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return -EINVAL;
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}
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if (mdss_fb_is_power_off(mfd)) {
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pr_err("display interface is in off state fb:%d\n",
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mfd->index);
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return -EPERM;
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}
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mdp3_session = mfd->mdp.private1;
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if (mdp3_session->in_splash_screen) {
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mdp3_ctrl_reset(mfd);
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mdp3_session->in_splash_screen = 0;
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}
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return 0;
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}
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