1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *
4  *  Copyright (C) 2010 John Crispin <john@phrozen.org>
5  */
6 #ifndef _LANTIQ_H__
7 #define _LANTIQ_H__
8 
9 #include <linux/irq.h>
10 #include <linux/device.h>
11 #include <linux/clk.h>
12 
13 /* generic reg access functions */
14 #define ltq_r32(reg)		__raw_readl(reg)
15 #define ltq_w32(val, reg)	__raw_writel(val, reg)
16 #define ltq_w32_mask(clear, set, reg)	\
17 	ltq_w32((ltq_r32(reg) & ~(clear)) | (set), reg)
18 #define ltq_r8(reg)		__raw_readb(reg)
19 #define ltq_w8(val, reg)	__raw_writeb(val, reg)
20 
21 /* register access macros for EBU and CGU */
22 #define ltq_ebu_w32(x, y)	ltq_w32((x), ltq_ebu_membase + (y))
23 #define ltq_ebu_r32(x)		ltq_r32(ltq_ebu_membase + (x))
24 #define ltq_ebu_w32_mask(x, y, z) \
25 	ltq_w32_mask(x, y, ltq_ebu_membase + (z))
26 extern __iomem void *ltq_ebu_membase;
27 
28 /* spinlock all ebu i/o */
29 extern spinlock_t ebu_lock;
30 
31 /* some irq helpers */
32 extern void ltq_disable_irq(struct irq_data *data);
33 extern void ltq_mask_and_ack_irq(struct irq_data *data);
34 extern void ltq_enable_irq(struct irq_data *data);
35 extern int ltq_eiu_get_irq(int exin);
36 
37 /* clock handling */
38 extern int clk_activate(struct clk *clk);
39 extern void clk_deactivate(struct clk *clk);
40 extern struct clk *clk_get_cpu(void);
41 extern struct clk *clk_get_fpi(void);
42 extern struct clk *clk_get_io(void);
43 extern struct clk *clk_get_ppe(void);
44 
45 /* find out what bootsource we have */
46 extern unsigned char ltq_boot_select(void);
47 /* find out the soc type */
48 extern int ltq_soc_type(void);
49 
50 #define IOPORT_RESOURCE_START	0x10000000
51 #define IOPORT_RESOURCE_END	0xffffffff
52 #define IOMEM_RESOURCE_START	0x10000000
53 #define IOMEM_RESOURCE_END	0xffffffff
54 
55 #endif
56