diff options
Diffstat (limited to 'arch/x86/include/asm/apb_timer.h')
| -rw-r--r-- | arch/x86/include/asm/apb_timer.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/x86/include/asm/apb_timer.h b/arch/x86/include/asm/apb_timer.h new file mode 100644 index 000000000..87ce8e963 --- /dev/null +++ b/arch/x86/include/asm/apb_timer.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * apb_timer.h: Driver for Langwell APB timer based on Synopsis DesignWare + * + * (C) Copyright 2009 Intel Corporation + * Author: Jacob Pan (jacob.jun.pan@intel.com) + * + * Note: + */ + +#ifndef ASM_X86_APBT_H +#define ASM_X86_APBT_H +#include <linux/sfi.h> + +#ifdef CONFIG_APB_TIMER + +/* default memory mapped register base */ +#define LNW_SCU_ADDR 0xFF100000 +#define LNW_EXT_TIMER_OFFSET 0x1B800 +#define APBT_DEFAULT_BASE (LNW_SCU_ADDR+LNW_EXT_TIMER_OFFSET) +#define LNW_EXT_TIMER_PGOFFSET 0x800 + +/* APBT clock speed range from PCLK to fabric base, 25-100MHz */ +#define APBT_MAX_FREQ 50000000 +#define APBT_MIN_FREQ 1000000 +#define APBT_MMAP_SIZE 1024 + +extern void apbt_time_init(void); +extern void apbt_setup_secondary_clock(void); + +extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint); +extern void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr); +extern int sfi_mtimer_num; + +#else /* CONFIG_APB_TIMER */ + +static inline void apbt_time_init(void) { } + +#endif +#endif /* ASM_X86_APBT_H */ |