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 extern unsigned int ltq_get_cpu_ver(void); 31 extern unsigned int ltq_get_soc_type(void); 32 33 /* spinlock all ebu i/o */ 34 extern spinlock_t ebu_lock; 35 36 /* some irq helpers */ 37 extern void ltq_disable_irq(struct irq_data *data); 38 extern void ltq_mask_and_ack_irq(struct irq_data *data); 39 extern void ltq_enable_irq(struct irq_data *data); 40 41 /* clock handling */ 42 extern int clk_activate(struct clk *clk); 43 extern void clk_deactivate(struct clk *clk); 44 extern struct clk *clk_get_cpu(void); 45 extern struct clk *clk_get_fpi(void); 46 extern struct clk *clk_get_io(void); 47 48 /* find out what bootsource we have */ 49 extern unsigned char ltq_boot_select(void); 50 /* find out what caused the last cpu reset */ 51 extern int ltq_reset_cause(void); 52 #define LTQ_RST_CAUSE_WDTRST 0x20 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 #define LTQ_FLASH_START 0x10000000 59 #define LTQ_FLASH_MAX 0x04000000 60 61 #endif 62