1/*
2 *  This program is free software; you can redistribute it and/or modify it
3 *  under the terms of the GNU General Public License version 2 as published
4 *  by the Free Software Foundation.
5 *
6 *  Copyright (C) 2010 John Crispin <blogic@openwrt.org>
7 */
8#ifndef _LANTIQ_H__
9#define _LANTIQ_H__
10
11#include <linux/irq.h>
12#include <linux/device.h>
13#include <linux/clk.h>
14
15/* generic reg access functions */
16#define ltq_r32(reg)		__raw_readl(reg)
17#define ltq_w32(val, reg)	__raw_writel(val, reg)
18#define ltq_w32_mask(clear, set, reg)	\
19	ltq_w32((ltq_r32(reg) & ~(clear)) | (set), reg)
20#define ltq_r8(reg)		__raw_readb(reg)
21#define ltq_w8(val, reg)	__raw_writeb(val, reg)
22
23/* register access macros for EBU and CGU */
24#define ltq_ebu_w32(x, y)	ltq_w32((x), ltq_ebu_membase + (y))
25#define ltq_ebu_r32(x)		ltq_r32(ltq_ebu_membase + (x))
26#define ltq_ebu_w32_mask(x, y, z) \
27	ltq_w32_mask(x, y, ltq_ebu_membase + (z))
28extern __iomem void *ltq_ebu_membase;
29
30/* spinlock all ebu i/o */
31extern spinlock_t ebu_lock;
32
33/* some irq helpers */
34extern void ltq_disable_irq(struct irq_data *data);
35extern void ltq_mask_and_ack_irq(struct irq_data *data);
36extern void ltq_enable_irq(struct irq_data *data);
37extern int ltq_eiu_get_irq(int exin);
38
39/* clock handling */
40extern int clk_activate(struct clk *clk);
41extern void clk_deactivate(struct clk *clk);
42extern struct clk *clk_get_cpu(void);
43extern struct clk *clk_get_fpi(void);
44extern struct clk *clk_get_io(void);
45extern struct clk *clk_get_ppe(void);
46
47/* find out what bootsource we have */
48extern unsigned char ltq_boot_select(void);
49/* find out what caused the last cpu reset */
50extern int ltq_reset_cause(void);
51/* find out the soc type */
52extern int ltq_soc_type(void);
53
54#define IOPORT_RESOURCE_START	0x10000000
55#define IOPORT_RESOURCE_END	0xffffffff
56#define IOMEM_RESOURCE_START	0x10000000
57#define IOMEM_RESOURCE_END	0xffffffff
58
59#endif
60