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/*
* Header for the SUDMAC driver
*
* Copyright (C) 2013 Renesas Solutions Corp.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*/
#ifndef SUDMAC_H
#define SUDMAC_H
#include <linux/dmaengine.h>
#include <linux/shdma-base.h>
#include <linux/types.h>
/* Used by slave DMA clients to request DMA to/from a specific peripheral */
struct sudmac_slave {
struct shdma_slave shdma_slave; /* Set by the platform */
};
/*
* Supplied by platforms to specify, how a DMA channel has to be configured for
* a certain peripheral
*/
struct sudmac_slave_config {
int slave_id;
};
struct sudmac_channel {
unsigned long offset;
unsigned long config;
unsigned long wait; /* The configuable range is 0 to 3 */
unsigned long dint_end_bit;
};
struct sudmac_pdata {
const struct sudmac_slave_config *slave;
int slave_num;
const struct sudmac_channel *channel;
int channel_num;
};
/* Definitions for the sudmac_channel.config */
#define SUDMAC_TX_BUFFER_MODE BIT(0)
#define SUDMAC_RX_END_MODE BIT(1)
/* Definitions for the sudmac_channel.dint_end_bit */
#define SUDMAC_DMA_BIT_CH0 BIT(0)
#define SUDMAC_DMA_BIT_CH1 BIT(1)
#endif