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1 | /* |
2 | * Copyright (C) 2013 Google, Inc | |
3 | * | |
4 | * (C) Copyright 2012 | |
5 | * Pavel Herrmann <morpheus.ibis@gmail.com> | |
6 | * Marek Vasut <marex@denx.de> | |
7 | * | |
8 | * SPDX-License-Identifier: GPL-2.0+ | |
9 | */ | |
10 | ||
11 | #ifndef _DM_DEVICE_INTERNAL_H | |
12 | #define _DM_DEVICE_INTERNAL_H | |
13 | ||
14 | struct device; | |
15 | ||
16 | /** | |
17 | * device_bind() - Create a device and bind it to a driver | |
18 | * | |
19 | * Called to set up a new device attached to a driver. The device will either | |
20 | * have platdata, or a device tree node which can be used to create the | |
21 | * platdata. | |
22 | * | |
23 | * Once bound a device exists but is not yet active until device_probe() is | |
24 | * called. | |
25 | * | |
26 | * @parent: Pointer to device's parent, under which this driver will exist | |
27 | * @drv: Device's driver | |
28 | * @name: Name of device (e.g. device tree node name) | |
29 | * @platdata: Pointer to data for this device - the structure is device- | |
30 | * specific but may include the device's I/O address, etc.. This is NULL for | |
31 | * devices which use device tree. | |
32 | * @of_offset: Offset of device tree node for this device. This is -1 for | |
33 | * devices which don't use device tree. | |
34 | * @devp: Returns a pointer to the bound device | |
35 | * @return 0 if OK, -ve on error | |
36 | */ | |
37 | int device_bind(struct device *parent, struct driver *drv, | |
38 | const char *name, void *platdata, int of_offset, | |
39 | struct device **devp); | |
40 | ||
41 | /** | |
42 | * device_bind_by_name: Create a device and bind it to a driver | |
43 | * | |
44 | * This is a helper function used to bind devices which do not use device | |
45 | * tree. | |
46 | * | |
47 | * @parent: Pointer to device's parent | |
48 | * @info: Name and platdata for this device | |
49 | * @devp: Returns a pointer to the bound device | |
50 | * @return 0 if OK, -ve on error | |
51 | */ | |
52 | int device_bind_by_name(struct device *parent, const struct driver_info *info, | |
53 | struct device **devp); | |
54 | ||
55 | /** | |
56 | * device_probe() - Probe a device, activating it | |
57 | * | |
58 | * Activate a device so that it is ready for use. All its parents are probed | |
59 | * first. | |
60 | * | |
61 | * @dev: Pointer to device to probe | |
62 | * @return 0 if OK, -ve on error | |
63 | */ | |
64 | int device_probe(struct device *dev); | |
65 | ||
66 | /** | |
67 | * device_remove() - Remove a device, de-activating it | |
68 | * | |
69 | * De-activate a device so that it is no longer ready for use. All its | |
70 | * children are deactivated first. | |
71 | * | |
72 | * @dev: Pointer to device to remove | |
73 | * @return 0 if OK, -ve on error (an error here is normally a very bad thing) | |
74 | */ | |
75 | int device_remove(struct device *dev); | |
76 | ||
77 | /** | |
78 | * device_unbind() - Unbind a device, destroying it | |
79 | * | |
80 | * Unbind a device and remove all memory used by it | |
81 | * | |
82 | * @dev: Pointer to device to unbind | |
83 | * @return 0 if OK, -ve on error | |
84 | */ | |
85 | int device_unbind(struct device *dev); | |
86 | ||
87 | #endif |