mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 21:38:59 +07:00
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
|
/*
|
||
|
|
* 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
|