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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2015-2016 MediaTek Inc.4 * Author: Houlong Wei <houlong.wei@mediatek.com>5 * Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>6 */7 8#include "mtk_mdp_core.h"9#include "mtk_mdp_vpu.h"10#include "mtk_vpu.h"11 12 13static inline struct mtk_mdp_ctx *vpu_to_ctx(struct mtk_mdp_vpu *vpu)14{15 return container_of(vpu, struct mtk_mdp_ctx, vpu);16}17 18static void mtk_mdp_vpu_handle_init_ack(const struct mdp_ipi_comm_ack *msg)19{20 struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)21 (unsigned long)msg->ap_inst;22 23 /* mapping VPU address to kernel virtual address */24 vpu->vsi = (struct mdp_process_vsi *)25 vpu_mapping_dm_addr(vpu->pdev, msg->vpu_inst_addr);26 vpu->inst_addr = msg->vpu_inst_addr;27}28 29static void mtk_mdp_vpu_ipi_handler(void *data, unsigned int len,30 void *priv)31{32 const struct mdp_ipi_comm_ack *msg = data;33 unsigned int msg_id = msg->msg_id;34 struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)35 (unsigned long)msg->ap_inst;36 struct mtk_mdp_ctx *ctx;37 38 vpu->failure = msg->status;39 if (!vpu->failure) {40 switch (msg_id) {41 case VPU_MDP_INIT_ACK:42 mtk_mdp_vpu_handle_init_ack(data);43 break;44 case VPU_MDP_DEINIT_ACK:45 case VPU_MDP_PROCESS_ACK:46 break;47 default:48 ctx = vpu_to_ctx(vpu);49 dev_err(&ctx->mdp_dev->pdev->dev,50 "handle unknown ipi msg:0x%x\n",51 msg_id);52 break;53 }54 } else {55 ctx = vpu_to_ctx(vpu);56 mtk_mdp_dbg(0, "[%d]:msg 0x%x, failure:%d", ctx->id,57 msg_id, vpu->failure);58 }59}60 61int mtk_mdp_vpu_register(struct platform_device *pdev)62{63 struct mtk_mdp_dev *mdp = platform_get_drvdata(pdev);64 int err;65 66 err = vpu_ipi_register(mdp->vpu_dev, IPI_MDP,67 mtk_mdp_vpu_ipi_handler, "mdp_vpu", NULL);68 if (err)69 dev_err(&mdp->pdev->dev,70 "vpu_ipi_registration fail status=%d\n", err);71 72 return err;73}74 75static int mtk_mdp_vpu_send_msg(void *msg, int len, struct mtk_mdp_vpu *vpu,76 int id)77{78 struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);79 int err;80 81 if (!vpu->pdev) {82 mtk_mdp_dbg(1, "[%d]:vpu pdev is NULL", ctx->id);83 return -EINVAL;84 }85 86 mutex_lock(&ctx->mdp_dev->vpulock);87 err = vpu_ipi_send(vpu->pdev, (enum ipi_id)id, msg, len);88 if (err)89 dev_err(&ctx->mdp_dev->pdev->dev,90 "vpu_ipi_send fail status %d\n", err);91 mutex_unlock(&ctx->mdp_dev->vpulock);92 93 return err;94}95 96static int mtk_mdp_vpu_send_ap_ipi(struct mtk_mdp_vpu *vpu, uint32_t msg_id)97{98 int err;99 struct mdp_ipi_comm msg;100 101 msg.msg_id = msg_id;102 msg.ipi_id = IPI_MDP;103 msg.vpu_inst_addr = vpu->inst_addr;104 msg.ap_inst = (unsigned long)vpu;105 err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);106 if (!err && vpu->failure)107 err = -EINVAL;108 109 return err;110}111 112int mtk_mdp_vpu_init(struct mtk_mdp_vpu *vpu)113{114 int err;115 struct mdp_ipi_init msg;116 struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);117 118 vpu->pdev = ctx->mdp_dev->vpu_dev;119 120 msg.msg_id = AP_MDP_INIT;121 msg.ipi_id = IPI_MDP;122 msg.ap_inst = (unsigned long)vpu;123 err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);124 if (!err && vpu->failure)125 err = -EINVAL;126 127 return err;128}129 130int mtk_mdp_vpu_deinit(struct mtk_mdp_vpu *vpu)131{132 return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_DEINIT);133}134 135int mtk_mdp_vpu_process(struct mtk_mdp_vpu *vpu)136{137 return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_PROCESS);138}139