1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2013 Samsung Electronics Co., Ltd. 4 * Tomasz Figa <t.figa@samsung.com> 5 * Copyright (c) 2004 Simtec Electronics 6 * http://armlinux.simtec.co.uk/ 7 * Written by Ben Dooks, <ben@simtec.co.uk> 8 */ 9 10 #ifndef __LINUX_SOC_SAMSUNG_S3C_PM_H 11 #define __LINUX_SOC_SAMSUNG_S3C_PM_H __FILE__ 12 13 #include <linux/types.h> 14 15 /* PM debug functions */ 16 17 /** 18 * struct pm_uart_save - save block for core UART 19 * @ulcon: Save value for S3C2410_ULCON 20 * @ucon: Save value for S3C2410_UCON 21 * @ufcon: Save value for S3C2410_UFCON 22 * @umcon: Save value for S3C2410_UMCON 23 * @ubrdiv: Save value for S3C2410_UBRDIV 24 * 25 * Save block for UART registers to be held over sleep and restored if they 26 * are needed (say by debug). 27 */ 28 struct pm_uart_save { 29 u32 ulcon; 30 u32 ucon; 31 u32 ufcon; 32 u32 umcon; 33 u32 ubrdiv; 34 u32 udivslot; 35 }; 36 37 #ifdef CONFIG_SAMSUNG_PM_DEBUG 38 /** 39 * s3c_pm_dbg() - low level debug function for use in suspend/resume. 40 * @msg: The message to print. 41 * 42 * This function is used mainly to debug the resume process before the system 43 * can rely on printk/console output. It uses the low-level debugging output 44 * routine printascii() to do its work. 45 */ 46 extern void s3c_pm_dbg(const char *msg, ...); 47 48 #define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt) 49 50 extern void s3c_pm_save_uarts(bool is_s3c24xx); 51 extern void s3c_pm_restore_uarts(bool is_s3c24xx); 52 53 #ifdef CONFIG_ARCH_S3C64XX 54 extern void s3c_pm_arch_update_uart(void __iomem *regs, 55 struct pm_uart_save *save); 56 #else 57 static inline void 58 s3c_pm_arch_update_uart(void __iomem *regs, struct pm_uart_save *save) 59 { 60 } 61 #endif 62 63 #else 64 #define S3C_PMDBG(fmt...) pr_debug(fmt) 65 66 static inline void s3c_pm_save_uarts(bool is_s3c24xx) { } 67 static inline void s3c_pm_restore_uarts(bool is_s3c24xx) { } 68 #endif 69 70 /* suspend memory checking */ 71 72 #ifdef CONFIG_SAMSUNG_PM_CHECK 73 extern void s3c_pm_check_prepare(void); 74 extern void s3c_pm_check_restore(void); 75 extern void s3c_pm_check_cleanup(void); 76 extern void s3c_pm_check_store(void); 77 #else 78 #define s3c_pm_check_prepare() do { } while (0) 79 #define s3c_pm_check_restore() do { } while (0) 80 #define s3c_pm_check_cleanup() do { } while (0) 81 #define s3c_pm_check_store() do { } while (0) 82 #endif 83 84 /* system device subsystems */ 85 86 extern struct bus_type s3c2410_subsys; 87 extern struct bus_type s3c2410a_subsys; 88 extern struct bus_type s3c2412_subsys; 89 extern struct bus_type s3c2416_subsys; 90 extern struct bus_type s3c2440_subsys; 91 extern struct bus_type s3c2442_subsys; 92 extern struct bus_type s3c2443_subsys; 93 94 #endif 95