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))
28 extern __iomem void *ltq_ebu_membase;
29 
30 /* spinlock all ebu i/o */
31 extern spinlock_t ebu_lock;
32 
33 /* some irq helpers */
34 extern void ltq_disable_irq(struct irq_data *data);
35 extern void ltq_mask_and_ack_irq(struct irq_data *data);
36 extern void ltq_enable_irq(struct irq_data *data);
37 extern int ltq_eiu_get_irq(int exin);
38 
39 /* clock handling */
40 extern int clk_activate(struct clk *clk);
41 extern void clk_deactivate(struct clk *clk);
42 extern struct clk *clk_get_cpu(void);
43 extern struct clk *clk_get_fpi(void);
44 extern struct clk *clk_get_io(void);
45 extern struct clk *clk_get_ppe(void);
46 
47 /* find out what bootsource we have */
48 extern unsigned char ltq_boot_select(void);
49 /* find out what caused the last cpu reset */
50 extern int ltq_reset_cause(void);
51 
52 #define IOPORT_RESOURCE_START	0x10000000
53 #define IOPORT_RESOURCE_END	0xffffffff
54 #define IOMEM_RESOURCE_START	0x10000000
55 #define IOMEM_RESOURCE_END	0xffffffff
56 
57 #endif
58