1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2015-2016 MediaTek Inc.
4 * Author: Houlong Wei <houlong.wei@mediatek.com>
5 * Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
8 #include "mtk_mdp_core.h"
9 #include "mtk_mdp_vpu.h"
13 static inline struct mtk_mdp_ctx *vpu_to_ctx(struct mtk_mdp_vpu *vpu)
15 return container_of(vpu, struct mtk_mdp_ctx, vpu);
18 static void mtk_mdp_vpu_handle_init_ack(struct mdp_ipi_comm_ack *msg)
20 struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
21 (unsigned long)msg->ap_inst;
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;
29 static void mtk_mdp_vpu_ipi_handler(void *data, unsigned int len, void *priv)
31 unsigned int msg_id = *(unsigned int *)data;
32 struct mdp_ipi_comm_ack *msg = (struct mdp_ipi_comm_ack *)data;
33 struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
34 (unsigned long)msg->ap_inst;
35 struct mtk_mdp_ctx *ctx;
37 vpu->failure = msg->status;
40 case VPU_MDP_INIT_ACK:
41 mtk_mdp_vpu_handle_init_ack(data);
43 case VPU_MDP_DEINIT_ACK:
44 case VPU_MDP_PROCESS_ACK:
47 ctx = vpu_to_ctx(vpu);
48 dev_err(&ctx->mdp_dev->pdev->dev,
49 "handle unknown ipi msg:0x%x\n",
54 ctx = vpu_to_ctx(vpu);
55 mtk_mdp_dbg(0, "[%d]:msg 0x%x, failure:%d", ctx->id,
56 msg_id, vpu->failure);
60 int mtk_mdp_vpu_register(struct platform_device *pdev)
62 struct mtk_mdp_dev *mdp = platform_get_drvdata(pdev);
65 err = vpu_ipi_register(mdp->vpu_dev, IPI_MDP,
66 mtk_mdp_vpu_ipi_handler, "mdp_vpu", NULL);
68 dev_err(&mdp->pdev->dev,
69 "vpu_ipi_registration fail status=%d\n", err);
74 static int mtk_mdp_vpu_send_msg(void *msg, int len, struct mtk_mdp_vpu *vpu,
77 struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
81 mtk_mdp_dbg(1, "[%d]:vpu pdev is NULL", ctx->id);
85 mutex_lock(&ctx->mdp_dev->vpulock);
86 err = vpu_ipi_send(vpu->pdev, (enum ipi_id)id, msg, len);
88 dev_err(&ctx->mdp_dev->pdev->dev,
89 "vpu_ipi_send fail status %d\n", err);
90 mutex_unlock(&ctx->mdp_dev->vpulock);
95 static int mtk_mdp_vpu_send_ap_ipi(struct mtk_mdp_vpu *vpu, uint32_t msg_id)
98 struct mdp_ipi_comm msg;
101 msg.ipi_id = IPI_MDP;
102 msg.vpu_inst_addr = vpu->inst_addr;
103 msg.ap_inst = (unsigned long)vpu;
104 err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
105 if (!err && vpu->failure)
111 int mtk_mdp_vpu_init(struct mtk_mdp_vpu *vpu)
114 struct mdp_ipi_init msg;
115 struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
117 vpu->pdev = ctx->mdp_dev->vpu_dev;
119 msg.msg_id = AP_MDP_INIT;
120 msg.ipi_id = IPI_MDP;
121 msg.ap_inst = (unsigned long)vpu;
122 err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
123 if (!err && vpu->failure)
129 int mtk_mdp_vpu_deinit(struct mtk_mdp_vpu *vpu)
131 return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_DEINIT);
134 int mtk_mdp_vpu_process(struct mtk_mdp_vpu *vpu)
136 return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_PROCESS);