/*
   * 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