tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * ssp.h
3 *
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This driver supports the following PXA CPU/SSP ports:-
11 *
12 * PXA250 SSP
13 * PXA255 SSP, NSSP
14 * PXA26x SSP, NSSP, ASSP
15 * PXA27x SSP1, SSP2, SSP3
16 */
17
18#ifndef SSP_H
19#define SSP_H
20
21/*
22 * SSP initialisation flags
23 */
24#define SSP_NO_IRQ 0x1 /* don't register an irq handler in SSP driver */
25
26struct ssp_state {
27 u32 cr0;
28 u32 cr1;
29 u32 to;
30 u32 psp;
31};
32
33struct ssp_dev {
34 u32 port;
35 u32 mode;
36 u32 flags;
37 u32 psp_flags;
38 u32 speed;
39 int irq;
40};
41
42int ssp_write_word(struct ssp_dev *dev, u32 data);
43int ssp_read_word(struct ssp_dev *dev, u32 *data);
44int ssp_flush(struct ssp_dev *dev);
45void ssp_enable(struct ssp_dev *dev);
46void ssp_disable(struct ssp_dev *dev);
47void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp);
48void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp);
49int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags);
50int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed);
51void ssp_exit(struct ssp_dev *dev);
52
53#endif