70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/*
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* Copyright (C) 2020-2022 Artinchip Technology Co. Ltd
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* author: artinchip
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* Desc: ve module interface
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* ve is a singleton pattern. there ara three functions in this module:
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* 1) open ve device
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* 2) get the ve device resource
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* 3) map the register space
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* 4) get physic address of a dma-buf
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*/
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#ifndef VE_H
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#define VE_H
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/**
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* ve_open_device - open ve device, return ve fd
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*/
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int ve_open_device(void);
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/**
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* ve_close_device - close ve device
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*/
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void ve_close_device(void);
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/**
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* ve_get_reg_base - get the register virtual address, it must call after ve_open_device
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*/
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unsigned long ve_get_reg_base(void);
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/**
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* ve_reset - ve hardware reset. used if ve work error (decode fail or timeout)
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*/
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int ve_reset(void);
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/**
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* ve_get_client- get ve device resource
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*/
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int ve_get_client(void);
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/**
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* ve_put_client- release ve device resource
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*/
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int ve_put_client(void);
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/**
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* ve_wait - ve wait irq
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* @reg_status: return value of ve status register
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* return: wait interrupt timeout if < 0
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*/
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int ve_wait(unsigned int *reg_status);
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/**
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* ve_add_dma_buf - add a dma-buf to ve driver and get the physic address
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* @dma_buf_fd: fd of dma-buf
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* @phy_addr: physic address of this dma-buf
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*/
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int ve_add_dma_buf(int dma_buf_fd, unsigned int *phy_addr);
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/**
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* ve_rm_dma_buf - remove the dma-buf from ve driver
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* @dma_buf_fd: fd of dma-buf
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* @phy_addr: physic address of this dma-buf
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*/
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int ve_rm_dma_buf(int dma_buf_fd, unsigned int phy_addr);
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#endif /* VE_H */
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