| Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| Lukasz Majewski | d9db590 | 2017-02-19 23:24:36 +0100 | [diff] [blame] | 2 | /* |
| 3 | * omap_wdt.h |
| 4 | * |
| 5 | * OMAP Watchdog header file |
| 6 | * |
| 7 | * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ |
| Lukasz Majewski | d9db590 | 2017-02-19 23:24:36 +0100 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #ifndef __OMAP_WDT_H__ |
| 11 | #define __OMAP_WDT_H__ |
| 12 | |
| Simon Glass | 4dcacfc | 2020-05-10 11:40:13 -0600 | [diff] [blame] | 13 | #ifndef __ASSEMBLY__ |
| 14 | #include <linux/bitops.h> |
| 15 | #endif |
| 16 | |
| Lukasz Majewski | d9db590 | 2017-02-19 23:24:36 +0100 | [diff] [blame] | 17 | /* |
| 18 | * Watchdog: |
| 19 | * Using the prescaler, the OMAP watchdog could go for many |
| 20 | * months before firing. These limits work without scaling, |
| 21 | * with the 60 second default assumed by most tools and docs. |
| 22 | */ |
| 23 | #define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */ |
| 24 | #define TIMER_MARGIN_DEFAULT 60 /* 60 secs */ |
| 25 | #define TIMER_MARGIN_MIN 1 |
| 26 | |
| 27 | #define PTV 0 /* prescale */ |
| 28 | #define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1) |
| 29 | #define WDT_WWPS_PEND_WCLR BIT(0) |
| 30 | #define WDT_WWPS_PEND_WLDR BIT(2) |
| 31 | #define WDT_WWPS_PEND_WTGR BIT(3) |
| 32 | #define WDT_WWPS_PEND_WSPR BIT(4) |
| 33 | |
| 34 | #define WDT_WCLR_PRE BIT(5) |
| 35 | #define WDT_WCLR_PTV_OFF 2 |
| 36 | |
| 37 | /* Watchdog timer registers */ |
| 38 | struct wd_timer { |
| 39 | unsigned int resv1[4]; |
| 40 | unsigned int wdtwdsc; /* offset 0x010 */ |
| 41 | unsigned int wdtwdst; /* offset 0x014 */ |
| 42 | unsigned int wdtwisr; /* offset 0x018 */ |
| 43 | unsigned int wdtwier; /* offset 0x01C */ |
| 44 | unsigned int wdtwwer; /* offset 0x020 */ |
| 45 | unsigned int wdtwclr; /* offset 0x024 */ |
| 46 | unsigned int wdtwcrr; /* offset 0x028 */ |
| 47 | unsigned int wdtwldr; /* offset 0x02C */ |
| 48 | unsigned int wdtwtgr; /* offset 0x030 */ |
| 49 | unsigned int wdtwwps; /* offset 0x034 */ |
| 50 | unsigned int resv2[3]; |
| 51 | unsigned int wdtwdly; /* offset 0x044 */ |
| 52 | unsigned int wdtwspr; /* offset 0x048 */ |
| 53 | unsigned int resv3[1]; |
| 54 | unsigned int wdtwqeoi; /* offset 0x050 */ |
| 55 | unsigned int wdtwqstar; /* offset 0x054 */ |
| 56 | unsigned int wdtwqsta; /* offset 0x058 */ |
| 57 | unsigned int wdtwqens; /* offset 0x05C */ |
| 58 | unsigned int wdtwqenc; /* offset 0x060 */ |
| 59 | unsigned int resv4[39]; |
| 60 | unsigned int wdt_unfr; /* offset 0x100 */ |
| 61 | }; |
| 62 | |
| Suniel Mahesh | 1c783ab | 2019-07-31 21:54:06 +0530 | [diff] [blame] | 63 | struct omap3_wdt_priv { |
| 64 | struct wd_timer *regs; |
| 65 | unsigned int wdt_trgr_pattern; |
| 66 | }; |
| 67 | |
| Lukasz Majewski | d9db590 | 2017-02-19 23:24:36 +0100 | [diff] [blame] | 68 | #endif /* __OMAP_WDT_H__ */ |