// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015-2016 MediaTek Inc.
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* Author: Houlong Wei <houlong.wei@mediatek.com>
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* Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
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*/
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#include "mtk_mdp_core.h"
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#include "mtk_mdp_vpu.h"
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#include "mtk_vpu.h"
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static inline struct mtk_mdp_ctx *vpu_to_ctx(struct mtk_mdp_vpu *vpu)
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{
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return container_of(vpu, struct mtk_mdp_ctx, vpu);
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}
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static void mtk_mdp_vpu_handle_init_ack(const struct mdp_ipi_comm_ack *msg)
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{
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struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
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(unsigned long)msg->ap_inst;
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/* mapping VPU address to kernel virtual address */
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vpu->vsi = (struct mdp_process_vsi *)
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vpu_mapping_dm_addr(vpu->pdev, msg->vpu_inst_addr);
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vpu->inst_addr = msg->vpu_inst_addr;
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}
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static void mtk_mdp_vpu_ipi_handler(const void *data, unsigned int len,
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void *priv)
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{
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const struct mdp_ipi_comm_ack *msg = data;
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unsigned int msg_id = msg->msg_id;
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struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
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(unsigned long)msg->ap_inst;
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struct mtk_mdp_ctx *ctx;
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vpu->failure = msg->status;
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if (!vpu->failure) {
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switch (msg_id) {
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case VPU_MDP_INIT_ACK:
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mtk_mdp_vpu_handle_init_ack(data);
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break;
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case VPU_MDP_DEINIT_ACK:
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case VPU_MDP_PROCESS_ACK:
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break;
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default:
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ctx = vpu_to_ctx(vpu);
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dev_err(&ctx->mdp_dev->pdev->dev,
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"handle unknown ipi msg:0x%x\n",
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msg_id);
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break;
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}
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} else {
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ctx = vpu_to_ctx(vpu);
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mtk_mdp_dbg(0, "[%d]:msg 0x%x, failure:%d", ctx->id,
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msg_id, vpu->failure);
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}
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}
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int mtk_mdp_vpu_register(struct platform_device *pdev)
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{
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struct mtk_mdp_dev *mdp = platform_get_drvdata(pdev);
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int err;
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err = vpu_ipi_register(mdp->vpu_dev, IPI_MDP,
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mtk_mdp_vpu_ipi_handler, "mdp_vpu", NULL);
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if (err)
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dev_err(&mdp->pdev->dev,
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"vpu_ipi_registration fail status=%d\n", err);
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return err;
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}
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static int mtk_mdp_vpu_send_msg(void *msg, int len, struct mtk_mdp_vpu *vpu,
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int id)
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{
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struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
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int err;
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if (!vpu->pdev) {
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mtk_mdp_dbg(1, "[%d]:vpu pdev is NULL", ctx->id);
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return -EINVAL;
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}
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mutex_lock(&ctx->mdp_dev->vpulock);
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err = vpu_ipi_send(vpu->pdev, (enum ipi_id)id, msg, len);
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if (err)
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dev_err(&ctx->mdp_dev->pdev->dev,
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"vpu_ipi_send fail status %d\n", err);
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mutex_unlock(&ctx->mdp_dev->vpulock);
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return err;
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}
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static int mtk_mdp_vpu_send_ap_ipi(struct mtk_mdp_vpu *vpu, uint32_t msg_id)
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{
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int err;
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struct mdp_ipi_comm msg;
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msg.msg_id = msg_id;
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msg.ipi_id = IPI_MDP;
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msg.vpu_inst_addr = vpu->inst_addr;
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msg.ap_inst = (unsigned long)vpu;
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err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
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if (!err && vpu->failure)
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err = -EINVAL;
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return err;
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}
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int mtk_mdp_vpu_init(struct mtk_mdp_vpu *vpu)
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{
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int err;
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struct mdp_ipi_init msg;
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struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
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vpu->pdev = ctx->mdp_dev->vpu_dev;
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msg.msg_id = AP_MDP_INIT;
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msg.ipi_id = IPI_MDP;
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msg.ap_inst = (unsigned long)vpu;
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err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
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if (!err && vpu->failure)
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err = -EINVAL;
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return err;
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}
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int mtk_mdp_vpu_deinit(struct mtk_mdp_vpu *vpu)
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{
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return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_DEINIT);
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}
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int mtk_mdp_vpu_process(struct mtk_mdp_vpu *vpu)
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{
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return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_PROCESS);
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}
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