| Rohit Vaswani | 8f709c0 | 2013-02-13 15:49:56 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | #ifndef _WALLCLK_H |
| 14 | #define _WALLCLK_H |
| 15 | |
| 16 | /* wallclock register offset */ |
| 17 | #define CTRL_REG_OFFSET 0x0 |
| 18 | #define PULSE_CNT_REG_OFFSET 0x4 |
| 19 | #define CLK_CNT_SNAPSHOT_REG_OFFSET 0x8 |
| 20 | #define CLK_CNT_REG_OFFSET 0xC |
| 21 | #define CLK_BASE_TIME0_OFFSET 0x24 |
| 22 | #define CLK_BASE_TIME1_OFFSET 0x28 |
| 23 | |
| 24 | /* ctrl register bitmap */ |
| 25 | #define CTRL_TIME_SRC_POS 0 |
| 26 | #define CTRL_TIME_SRC_MASK 0x0000000F |
| 27 | #define CTRL_SW_BITS_POS 4 |
| 28 | #define CTRL_SW_BITS_MASK 0x7FFFFFF0 |
| 29 | #define CTRL_ENA_DIS_POS 31 |
| 30 | #define CTRL_ENABLE_MASK 0x80000000 |
| 31 | |
| 32 | /* clock rate from time source */ |
| 33 | #define CLK_RATE 122880000 /* 122.88 Mhz */ |
| 34 | #define PPNS_PULSE 2 /* PP2S */ |
| 35 | |
| 36 | #define MAX_SFN 1023 |
| 37 | #define SFN_PER_SECOND 100 |
| 38 | |
| 39 | extern int wallclk_set_sfn(u16 sfn); |
| 40 | extern int wallclk_get_sfn(void); |
| 41 | extern int wallclk_set_sfn_ref(u16 sfn); |
| 42 | extern int wallclk_get_sfn_ref(void); |
| 43 | extern int wallclk_reg_read(u32 offset, u32 *p); |
| 44 | extern int wallclk_reg_write(u32 offset, u32 value); |
| 45 | |
| 46 | #endif /* _WALLCLK_H */ |