projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 57251285 SG |
1 | /* |
| 2 | * Copyright (c) 2015 Google, Inc | |
| 3 | * Written by Simon Glass <[email protected]> | |
| 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 | ||
| ac94b7bc SG |
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 controller given this driver data. | |
| 41 | * | |
| 42 | * @driver_data: Driver data value to look up | |
| 43 | * @devp: Returns the controller correponding to @driver_data | |
| 44 | * @return 0 on success, -ENODEV if the ID was not found, or other -ve error | |
| 45 | * code | |
| 46 | */ | |
| 47 | int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp); | |
| 48 | ||
| 57251285 SG |
49 | /** |
| 50 | * syscon_get_regmap_by_driver_data() - Look up a controller by its ID | |
| 51 | * | |
| 52 | * Each system controller can be accessed by its driver data, which is | |
| 53 | * assumed to be unique through the scope of all system controllers that | |
| 54 | * are in use. This function looks up the regmap given this driver data. | |
| 55 | * | |
| 56 | * @driver_data: Driver data value to look up | |
| 57 | * @return register map correponding to @driver_data, or -ve error code | |
| 58 | */ | |
| 59 | struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data); | |
| 60 | ||
| 61 | /** | |
| 62 | * syscon_get_first_range() - get the first memory range from a syscon regmap | |
| 63 | * | |
| 64 | * @driver_data: Driver data value to look up | |
| 65 | * @return first region of register map correponding to @driver_data, or | |
| 66 | * -ve error code | |
| 67 | */ | |
| 68 | void *syscon_get_first_range(ulong driver_data); | |
| 69 | ||
| 70 | #endif |