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/*
* Copyright (c) 2015-2016 MediaTek Inc.
* Author: Houlong Wei <houlong.wei@mediatek.com>
* Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "mtk_mdp_core.h"
#include "mtk_mdp_vpu.h"
#include "mtk_vpu.h"
static inline struct mtk_mdp_ctx *vpu_to_ctx(struct mtk_mdp_vpu *vpu)
{
return container_of(vpu, struct mtk_mdp_ctx, vpu);
}
static void mtk_mdp_vpu_handle_init_ack(struct mdp_ipi_comm_ack *msg)
{
struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
(unsigned long)msg->ap_inst;
/* mapping VPU address to kernel virtual address */
vpu->vsi = (struct mdp_process_vsi *)
vpu_mapping_dm_addr(vpu->pdev, msg->vpu_inst_addr);
vpu->inst_addr = msg->vpu_inst_addr;
}
static void mtk_mdp_vpu_ipi_handler(void *data, unsigned int len, void *priv)
{
unsigned int msg_id = *(unsigned int *)data;
struct mdp_ipi_comm_ack *msg = (struct mdp_ipi_comm_ack *)data;
struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
(unsigned long)msg->ap_inst;
struct mtk_mdp_ctx *ctx;
vpu->failure = msg->status;
if (!vpu->failure) {
switch (msg_id) {
case VPU_MDP_INIT_ACK:
mtk_mdp_vpu_handle_init_ack(data);
break;
case VPU_MDP_DEINIT_ACK:
case VPU_MDP_PROCESS_ACK:
break;
default:
ctx = vpu_to_ctx(vpu);
dev_err(&ctx->mdp_dev->pdev->dev,
"handle unknown ipi msg:0x%x\n",
msg_id);
break;
}
} else {
ctx = vpu_to_ctx(vpu);
mtk_mdp_dbg(0, "[%d]:msg 0x%x, failure:%d", ctx->id,
msg_id, vpu->failure);
}
}
int mtk_mdp_vpu_register(struct platform_device *pdev)
{
struct mtk_mdp_dev *mdp = platform_get_drvdata(pdev);
int err;
err = vpu_ipi_register(mdp->vpu_dev, IPI_MDP,
mtk_mdp_vpu_ipi_handler, "mdp_vpu", NULL);
if (err)
dev_err(&mdp->pdev->dev,
"vpu_ipi_registration fail status=%d\n", err);
return err;
}
static int mtk_mdp_vpu_send_msg(void *msg, int len, struct mtk_mdp_vpu *vpu,
int id)
{
struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
int err;
if (!vpu->pdev) {
mtk_mdp_dbg(1, "[%d]:vpu pdev is NULL", ctx->id);
return -EINVAL;
}
mutex_lock(&ctx->mdp_dev->vpulock);
err = vpu_ipi_send(vpu->pdev, (enum ipi_id)id, msg, len);
if (err)
dev_err(&ctx->mdp_dev->pdev->dev,
"vpu_ipi_send fail status %d\n", err);
mutex_unlock(&ctx->mdp_dev->vpulock);
return err;
}
static int mtk_mdp_vpu_send_ap_ipi(struct mtk_mdp_vpu *vpu, uint32_t msg_id)
{
int err;
struct mdp_ipi_comm msg;
msg.msg_id = msg_id;
msg.ipi_id = IPI_MDP;
msg.vpu_inst_addr = vpu->inst_addr;
msg.ap_inst = (unsigned long)vpu;
err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
if (!err && vpu->failure)
err = -EINVAL;
return err;
}
int mtk_mdp_vpu_init(struct mtk_mdp_vpu *vpu)
{
int err;
struct mdp_ipi_init msg;
struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
vpu->pdev = ctx->mdp_dev->vpu_dev;
msg.msg_id = AP_MDP_INIT;
msg.ipi_id = IPI_MDP;
msg.ap_inst = (unsigned long)vpu;
err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
if (!err && vpu->failure)
err = -EINVAL;
return err;
}
int mtk_mdp_vpu_deinit(struct mtk_mdp_vpu *vpu)
{
return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_DEINIT);
}
int mtk_mdp_vpu_process(struct mtk_mdp_vpu *vpu)
{
return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_PROCESS);
}
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