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/*
* ssp.h
*
* Copyright (C) 2003 Russell King, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This driver supports the following PXA CPU/SSP ports:-
*
* PXA250 SSP
* PXA255 SSP, NSSP
* PXA26x SSP, NSSP, ASSP
* PXA27x SSP1, SSP2, SSP3
*/
#ifndef SSP_H
#define SSP_H
/*
* SSP initialisation flags
*/
#define SSP_NO_IRQ 0x1 /* don't register an irq handler in SSP driver */
struct ssp_state {
u32 cr0;
u32 cr1;
u32 to;
u32 psp;
};
struct ssp_dev {
u32 port;
u32 mode;
u32 flags;
u32 psp_flags;
u32 speed;
int irq;
};
int ssp_write_word(struct ssp_dev *dev, u32 data);
int ssp_read_word(struct ssp_dev *dev, u32 *data);
int ssp_flush(struct ssp_dev *dev);
void ssp_enable(struct ssp_dev *dev);
void ssp_disable(struct ssp_dev *dev);
void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp);
void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp);
int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags);
int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed);
void ssp_exit(struct ssp_dev *dev);
#endif
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