M7350/kernel/arch/arm/mach-msm/wallclk.h
2024-09-09 08:52:07 +00:00

47 lines
1.4 KiB
C

/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef _WALLCLK_H
#define _WALLCLK_H
/* wallclock register offset */
#define CTRL_REG_OFFSET 0x0
#define PULSE_CNT_REG_OFFSET 0x4
#define CLK_CNT_SNAPSHOT_REG_OFFSET 0x8
#define CLK_CNT_REG_OFFSET 0xC
#define CLK_BASE_TIME0_OFFSET 0x24
#define CLK_BASE_TIME1_OFFSET 0x28
/* ctrl register bitmap */
#define CTRL_TIME_SRC_POS 0
#define CTRL_TIME_SRC_MASK 0x0000000F
#define CTRL_SW_BITS_POS 4
#define CTRL_SW_BITS_MASK 0x7FFFFFF0
#define CTRL_ENA_DIS_POS 31
#define CTRL_ENABLE_MASK 0x80000000
/* clock rate from time source */
#define CLK_RATE 122880000 /* 122.88 Mhz */
#define PPNS_PULSE 2 /* PP2S */
#define MAX_SFN 1023
#define SFN_PER_SECOND 100
extern int wallclk_set_sfn(u16 sfn);
extern int wallclk_get_sfn(void);
extern int wallclk_set_sfn_ref(u16 sfn);
extern int wallclk_get_sfn_ref(void);
extern int wallclk_reg_read(u32 offset, u32 *p);
extern int wallclk_reg_write(u32 offset, u32 value);
#endif /* _WALLCLK_H */