1 /* 2 * Copyright (c) 2015 Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef __SYSCON_H 9 #define __SYSCON_H 10 11 /** 12 * struct syscon_uc_info - Information stored by the syscon UCLASS_UCLASS 13 * 14 * @regmap: Register map for this controller 15 */ 16 struct syscon_uc_info { 17 struct regmap *regmap; 18 }; 19 20 /* So far there are no ops so this is a placeholder */ 21 struct syscon_ops { 22 }; 23 24 #define syscon_get_ops(dev) ((struct syscon_ops *)(dev)->driver->ops) 25 26 /** 27 * syscon_get_regmap() - Get access to a register map 28 * 29 * @dev: Device to check (UCLASS_SCON) 30 * @info: Returns regmap for the device 31 * @return 0 if OK, -ve on error 32 */ 33 struct regmap *syscon_get_regmap(struct udevice *dev); 34 35 /** 36 * syscon_get_regmap_by_driver_data() - Look up a controller by its ID 37 * 38 * Each system controller can be accessed by its driver data, which is 39 * assumed to be unique through the scope of all system controllers that 40 * are in use. This function looks up the regmap given this driver data. 41 * 42 * @driver_data: Driver data value to look up 43 * @return register map correponding to @driver_data, or -ve error code 44 */ 45 struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data); 46 47 /** 48 * syscon_get_first_range() - get the first memory range from a syscon regmap 49 * 50 * @driver_data: Driver data value to look up 51 * @return first region of register map correponding to @driver_data, or 52 * -ve error code 53 */ 54 void *syscon_get_first_range(ulong driver_data); 55 56 #endif 57