/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_HPET_H
#define _ASM_HPET_H

#ifdef CONFIG_RS780_HPET

#define HPET_MMAP_SIZE          1024

#define HPET_ID                 0x000
#define HPET_PERIOD             0x004
#define HPET_CFG                0x010
#define HPET_STATUS             0x020
#define HPET_COUNTER    0x0f0

#define HPET_Tn_CFG(n)          (0x100 + 0x20 * n)
#define HPET_Tn_CMP(n)          (0x108 + 0x20 * n)
#define HPET_Tn_ROUTE(n)        (0x110 + 0x20 * n)

#define HPET_T0_IRS             0x001
#define HPET_T1_IRS             0x002
#define HPET_T3_IRS             0x004

#define HPET_T0_CFG             0x100
#define HPET_T0_CMP             0x108
#define HPET_T0_ROUTE   0x110
#define HPET_T1_CFG             0x120
#define HPET_T1_CMP             0x128
#define HPET_T1_ROUTE   0x130
#define HPET_T2_CFG             0x140
#define HPET_T2_CMP             0x148
#define HPET_T2_ROUTE   0x150

#define HPET_ID_REV                     0x000000ff
#define HPET_ID_NUMBER          0x00001f00
#define HPET_ID_64BIT           0x00002000
#define HPET_ID_LEGSUP          0x00008000
#define HPET_ID_VENDOR          0xffff0000
#define HPET_ID_NUMBER_SHIFT    8
#define HPET_ID_VENDOR_SHIFT    16

#define HPET_CFG_ENABLE         0x001
#define HPET_CFG_LEGACY         0x002
#define HPET_LEGACY_8254                2
#define HPET_LEGACY_RTC         8

#define HPET_TN_LEVEL           0x0002
#define HPET_TN_ENABLE          0x0004
#define HPET_TN_PERIODIC        0x0008
#define HPET_TN_PERIODIC_CAP    0x0010
#define HPET_TN_64BIT_CAP       0x0020
#define HPET_TN_SETVAL          0x0040
#define HPET_TN_32BIT           0x0100
#define HPET_TN_ROUTE           0x3e00
#define HPET_TN_FSB                     0x4000
#define HPET_TN_FSB_CAP         0x8000
#define HPET_TN_ROUTE_SHIFT     9

/* Max HPET Period is 10^8 femto sec as in HPET spec */
#define HPET_MAX_PERIOD         100000000UL
/*
 * Min HPET period is 10^5 femto sec just for safety. If it is less than this,
 * then 32 bit HPET counter wrapsaround in less than 0.5 sec.
 */
#define HPET_MIN_PERIOD         100000UL

#define HPET_ADDR               0x20000
#define HPET_MMIO_ADDR  0x90000e0000020000
#define HPET_FREQ               14318780
#define HPET_COMPARE_VAL        ((HPET_FREQ + HZ / 2) / HZ)
#define HPET_T0_IRQ             0

extern void __init setup_hpet_timer(void);
#endif /* CONFIG_RS780_HPET */
#endif /* _ASM_HPET_H */