ssp.h

linux-2.6.15.6

/*
 *  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);
void 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