2 * Copyright (c) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
12 * struct syscon_uc_info - Information stored by the syscon UCLASS_UCLASS
14 * @regmap: Register map for this controller
16 struct syscon_uc_info {
17 struct regmap *regmap;
20 /* So far there are no ops so this is a placeholder */
24 #define syscon_get_ops(dev) ((struct syscon_ops *)(dev)->driver->ops)
26 #if CONFIG_IS_ENABLED(OF_PLATDATA)
28 * We don't support 64-bit machines. If they are so resource-contrained that
29 * they need to use OF_PLATDATA, something is horribly wrong with the
30 * education of our hardware engineers.
32 struct syscon_base_platdata {
38 * syscon_get_regmap() - Get access to a register map
40 * @dev: Device to check (UCLASS_SCON)
41 * @info: Returns regmap for the device
42 * @return 0 if OK, -ve on error
44 struct regmap *syscon_get_regmap(struct udevice *dev);
47 * syscon_get_regmap_by_driver_data() - Look up a controller by its ID
49 * Each system controller can be accessed by its driver data, which is
50 * assumed to be unique through the scope of all system controllers that
51 * are in use. This function looks up the controller given this driver data.
53 * @driver_data: Driver data value to look up
54 * @devp: Returns the controller correponding to @driver_data
55 * @return 0 on success, -ENODEV if the ID was not found, or other -ve error
58 int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp);
61 * syscon_get_regmap_by_driver_data() - Look up a controller by its ID
63 * Each system controller can be accessed by its driver data, which is
64 * assumed to be unique through the scope of all system controllers that
65 * are in use. This function looks up the regmap given this driver data.
67 * @driver_data: Driver data value to look up
68 * @return register map correponding to @driver_data, or -ve error code
70 struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data);
73 * syscon_get_first_range() - get the first memory range from a syscon regmap
75 * @driver_data: Driver data value to look up
76 * @return first region of register map correponding to @driver_data, or
79 void *syscon_get_first_range(ulong driver_data);