/*
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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 "usbc_i.h"
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/*
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***********************************************************************************
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* USBC_Dma_Set_ChannalPara
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*
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* Description:
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* 查询fifo是否为空
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*
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* Arguments:
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* hUSB : input. USBC_open_otg获得的句柄, 记录了USBC所需要的一些关键数据
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*
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*
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* Returns:
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*
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* note:
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* 无
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*
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***********************************************************************************
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*/
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int USBC_Dma_Set_ChannalPara(__hdle hUSB, __u32 dma_chan, __u32 trans_dir, __u32 ep_type)
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{
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__usbc_otg_t *usbc_otg = (__usbc_otg_t *)hUSB;
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uint reg_val;
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if(usbc_otg == NULL)
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{
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return -1;
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}
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reg_val = readl(usbc_otg->base_addr + USBC_REG_o_DMA_CONFIG + 0x10 * dma_chan);
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reg_val &= ~((1 << 4) | (0xf << 0));
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reg_val |= ((trans_dir & 1) << 4);
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reg_val |= ((ep_type & 0xf) << 0);
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writel(reg_val, usbc_otg->base_addr + USBC_REG_o_DMA_CONFIG + 0x10 * dma_chan);
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return 0;
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}
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/*
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***********************************************************************************
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* USBC_Dma_Set_PktLen
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*
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* Description:
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* 查询fifo是否为空
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*
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* Arguments:
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* hUSB : input. USBC_open_otg获得的句柄, 记录了USBC所需要的一些关键数据
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*
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*
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* Returns:
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*
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* note:
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* 无
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*
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***********************************************************************************
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*/
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int USBC_Dma_Set_PktLen(__hdle hUSB, __u32 dma_chan, __u32 pkt_len)
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{
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__usbc_otg_t *usbc_otg = (__usbc_otg_t *)hUSB;
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uint reg_val;
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if(usbc_otg == NULL)
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{
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return -1;
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}
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reg_val = readl(usbc_otg->base_addr + USBC_REG_o_DMA_CONFIG + 0x10 * dma_chan);
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reg_val &= ~(0x7ff << 16);
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//1650 burst len: datawidth is 32bit = 4byte,so burst len = pkt_len/4
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//reg_val |= (((pkt_len/4) & 0x7ff) << 16);
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//1667 burst len : datawidth is 8bit, so burst len = 1byte
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reg_val |= (((pkt_len) & 0x7ff) << 16);
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writel(reg_val, usbc_otg->base_addr + USBC_REG_o_DMA_CONFIG + 0x10 * dma_chan);
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return 0;
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}
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/*
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***********************************************************************************
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* USBC_Dma_Start
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*
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* Description:
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* 查询fifo是否为空
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*
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* Arguments:
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* hUSB : input. USBC_open_otg获得的句柄, 记录了USBC所需要的一些关键数据
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*
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*
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* Returns:
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*
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* note:
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* 无
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*
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***********************************************************************************
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*/
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int USBC_Dma_Start(__hdle hUSB, __u32 dma_chan, __u32 addr, __u32 pkt_len)
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{
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__usbc_otg_t *usbc_otg = (__usbc_otg_t *)hUSB;
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uint reg_val;
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if(usbc_otg == NULL)
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{
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return -1;
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}
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if(pkt_len & 0x03)
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{
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return -1;
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}
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reg_val = readl(usbc_otg->base_addr + USBC_REG_o_DMA_ENABLE);
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reg_val |= (1 << (dma_chan & 0xff));
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writel(reg_val, usbc_otg->base_addr + USBC_REG_o_DMA_ENABLE);
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writel(addr, usbc_otg->base_addr + USBC_REG_o_DMA_ADDR + 0x10 * dma_chan);
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//1650 datawidth is 32 bit.so size=len/4
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//writel(pkt_len/4, usbc_otg->base_addr + USBC_REG_o_DMA_SIZE + 0x10 * dma_chan);
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//1667 datawidth is 8bit
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writel(pkt_len, usbc_otg->base_addr + USBC_REG_o_DMA_SIZE + 0x10 * dma_chan);
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reg_val = readl(usbc_otg->base_addr + USBC_REG_o_DMA_CONFIG + 0x10 * dma_chan);
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reg_val |= (1U << 31);
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writel(reg_val, usbc_otg->base_addr + USBC_REG_o_DMA_CONFIG + 0x10 * dma_chan);
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return 0;
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}
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/*
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***********************************************************************************
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* USBC_Dma_Int_Stop
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*
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* Description:
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* 查询fifo是否为空
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*
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* Arguments:
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* hUSB : input. USBC_open_otg获得的句柄, 记录了USBC所需要的一些关键数据
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*
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*
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* Returns:
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*
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* note:
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* 无
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*
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***********************************************************************************
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*/
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int USBC_Dma_Int_Stop(__hdle hUSB, __u32 dma_chan)
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{
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__usbc_otg_t *usbc_otg = (__usbc_otg_t *)hUSB;
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uint reg_val;
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if(usbc_otg == NULL)
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{
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return -1;
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}
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reg_val = readl(usbc_otg->base_addr + USBC_REG_o_DMA_ENABLE);
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reg_val &= ~(1 << (dma_chan & 0xff));
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writel(reg_val, usbc_otg->base_addr + USBC_REG_o_DMA_ENABLE);
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return 0;
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}
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/*
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***********************************************************************************
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* USBC_Dma_Int_Query
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*
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* Description:
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* 查询fifo是否为空
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*
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* Arguments:
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* hUSB : input. USBC_open_otg获得的句柄, 记录了USBC所需要的一些关键数据
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*
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*
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* Returns:
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*
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* note:
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* 无
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*
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***********************************************************************************
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*/
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int USBC_Dma_Int_Query(__hdle hUSB)
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{
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__usbc_otg_t *usbc_otg = (__usbc_otg_t *)hUSB;
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if(usbc_otg == NULL)
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{
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return -1;
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}
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return readl(usbc_otg->base_addr + USBC_REG_o_DMA_STATUS);
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}
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/*
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***********************************************************************************
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* USBC_Dma_Int_Clear
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*
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* Description:
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* 查询fifo是否为空
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*
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* Arguments:
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* hUSB : input. USBC_open_otg获得的句柄, 记录了USBC所需要的一些关键数据
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*
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*
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* Returns:
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*
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* note:
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* 无
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*
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***********************************************************************************
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*/
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int USBC_Dma_Int_Clear(__hdle hUSB)
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{
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__usbc_otg_t *usbc_otg = (__usbc_otg_t *)hUSB;
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if(usbc_otg == NULL)
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{
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return -1;
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}
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writel(0xff, usbc_otg->base_addr + USBC_REG_o_DMA_STATUS);
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return 0;
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}
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