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gerrit-public.fairphone.software / kernel / msm-5.4 / 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 / . / include / asm-x86_64 / hpet.h
blob: a3877f5709986e80f5dfdfe12b2d7a191face5ff [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame^]1#ifndef _ASM_X8664_HPET_H
2#define _ASM_X8664_HPET_H 1
3
4/*
5 * Documentation on HPET can be found at:
6 * http://www.intel.com/ial/home/sp/pcmmspec.htm
7 * ftp://download.intel.com/ial/home/sp/mmts098.pdf
8 */
9
10#define HPET_MMAP_SIZE 1024
11
12#define HPET_ID 0x000
13#define HPET_PERIOD 0x004
14#define HPET_CFG 0x010
15#define HPET_STATUS 0x020
16#define HPET_COUNTER 0x0f0
17#define HPET_T0_CFG 0x100
18#define HPET_T0_CMP 0x108
19#define HPET_T0_ROUTE 0x110
20#define HPET_T1_CFG 0x120
21#define HPET_T1_CMP 0x128
22#define HPET_T1_ROUTE 0x130
23#define HPET_T2_CFG 0x140
24#define HPET_T2_CMP 0x148
25#define HPET_T2_ROUTE 0x150
26
27#define HPET_ID_VENDOR 0xffff0000
28#define HPET_ID_LEGSUP 0x00008000
29#define HPET_ID_NUMBER 0x00001f00
30#define HPET_ID_REV 0x000000ff
31#define HPET_ID_NUMBER_SHIFT 8
32
33#define HPET_ID_VENDOR_SHIFT 16
34#define HPET_ID_VENDOR_8086 0x8086
35
36#define HPET_CFG_ENABLE 0x001
37#define HPET_CFG_LEGACY 0x002
38#define HPET_LEGACY_8254 2
39#define HPET_LEGACY_RTC 8
40
41#define HPET_TN_ENABLE 0x004
42#define HPET_TN_PERIODIC 0x008
43#define HPET_TN_PERIODIC_CAP 0x010
44#define HPET_TN_SETVAL 0x040
45#define HPET_TN_32BIT 0x100
46
47extern int is_hpet_enabled(void);
48extern int hpet_rtc_timer_init(void);
49extern int oem_force_hpet_timer(void);
50
51#ifdef CONFIG_HPET_EMULATE_RTC
52extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
53extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
54extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec);
55extern int hpet_set_periodic_freq(unsigned long freq);
56extern int hpet_rtc_dropped_irq(void);
57extern int hpet_rtc_timer_init(void);
58#endif /* CONFIG_HPET_EMULATE_RTC */
59
60#endif