/*
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* (C) Copyright 2007-2013
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Jerry Wang <wangflord@allwinnertech.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/arch/usb.h>
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#define SUNXI_USB_DMA_A50_MAX (8)
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static uint usb_hd;
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static uint usb_dma_used[SUNXI_USB_DMA_A50_MAX];
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/*
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************************************************************************************************************
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*
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* function
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*
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* name :
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*
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* parmeters :
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*
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* return :
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*
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* note :
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*
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*
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************************************************************************************************************
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*/
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static int __usb_index_check(uint dma_index)
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{
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if(dma_index > SUNXI_USB_DMA_A50_MAX)
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{
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printf("usb dma %d is overrange\n", dma_index);
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return -1;
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}
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if(!usb_dma_used[dma_index])
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{
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printf("usb dma %d is not used\n", dma_index);
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return -1;
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}
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return 0;
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}
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/*
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****************************************************************************************************
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*
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* DMAC_RequestDma
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*
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* Description:
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* request dma
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*
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* Parameters:
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* type 0: normal timer
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* 1: special timer
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* Return value:
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* dma handler
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* if 0, fail
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****************************************************************************************************
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*/
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int usb_dma_init(uint husb)
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{
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usb_hd = husb;
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return 0;
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}
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/*
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****************************************************************************************************
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*
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* DMAC_RequestDma
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*
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* Description:
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* request dma
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*
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* Parameters:
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* type 0: normal timer
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* 1: special timer
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* Return value:
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* dma handler
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* if 0, fail
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****************************************************************************************************
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*/
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uint usb_dma_request(void)
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{
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int i;
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for(i=1;i<SUNXI_USB_DMA_A50_MAX;i++)
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{
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if(usb_dma_used[i] == 0)
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{
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usb_dma_used[i] = 1;
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return i;
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}
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}
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return 0;
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}
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/*
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****************************************************************************************************
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*
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* DMAC_ReleaseDma
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*
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* Description:
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* release dma
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*
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* Parameters:
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* hDma dma handler
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*
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* Return value:
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* EPDK_OK/FAIL
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****************************************************************************************************
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*/
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int usb_dma_release(uint dma_index)
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{
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int ret;
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ret = __usb_index_check(dma_index);
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if(ret)
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{
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return ret;
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}
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usb_dma_used[dma_index] = 0;
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return 0;
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}
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/*
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****************************************************************************************************
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*
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* sunxi_dma_setting
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*
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* Description:
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* start interrupt
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*
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* Parameters:
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*
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*
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*
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*
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*
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*
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* Return value:
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*
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*
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**********************************************************************************************************************
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*/
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int usb_dma_setting(uint dma_index, uint trans_dir, uint ep)
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{
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int ret;
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ret = __usb_index_check(dma_index);
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if(ret)
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{
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return ret;
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}
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return USBC_Dma_Set_ChannalPara(usb_hd, dma_index, trans_dir, ep);
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}
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/*
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**********************************************************************************************************************
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*
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* sunxi_dma_start
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*
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* Description:
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*
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*
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* Parameters:
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*
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*
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* Return value:
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*
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*
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****************************************************************************************************
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*/
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int usb_dma_set_pktlen(uint dma_index, uint pkt_len)
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{
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int ret;
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ret = __usb_index_check(dma_index);
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if(ret)
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{
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return ret;
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}
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return USBC_Dma_Set_PktLen(usb_hd, dma_index, pkt_len);
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}
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/*
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**********************************************************************************************************************
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*
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* sunxi_dma_start
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*
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* Description:
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*
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*
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* Parameters:
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*
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*
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* Return value:
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*
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*
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****************************************************************************************************
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*/
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int usb_dma_start(uint dma_index, uint addr, uint bytes)
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{
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int ret;
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ret = __usb_index_check(dma_index);
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if(ret)
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{
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return ret;
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}
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return USBC_Dma_Start(usb_hd, dma_index, addr, bytes);
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}
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/*
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**********************************************************************************************************************
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*
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* usb_dma_int_enable
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*
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* Description:
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*
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*
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* Parameters:
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*
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*
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* Return value:
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*
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*
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**********************************************************************************************************************
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*/
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int usb_dma_stop(uint dma_index)
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{
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int ret;
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ret = __usb_index_check(dma_index);
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if(ret)
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{
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return ret;
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}
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return USBC_Dma_Int_Stop(usb_hd, dma_index);
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}
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/*
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**********************************************************************************************************************
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*
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* usb_dma_int_query
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*
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* Description:
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*
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*
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* Parameters:
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*
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*
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* Return value:
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*
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*
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**********************************************************************************************************************
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*/
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int usb_dma_int_query(uint dma_index)
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{
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return USBC_Dma_Int_Query(usb_hd);
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}
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/*
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**********************************************************************************************************************
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*
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* usb_dma_int_query
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*
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* Description:
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*
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*
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* Parameters:
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*
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*
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* Return value:
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*
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*
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**********************************************************************************************************************
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*/
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int usb_dma_int_clear(void)
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{
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return USBC_Dma_Int_Clear(usb_hd);
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}
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