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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | /* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright (c) 2021 Linaro Limited * Author: AKASHI Takahiro */ #ifndef _DM_TAG_H #define _DM_TAG_H #include <linux/list.h> #include <linux/types.h> struct udevice; enum dm_tag_t { /* EFI_LOADER */ DM_TAG_EFI = 0, DM_TAG_COUNT, }; /** * dmtag_node * * @sibling: List of dm-tag nodes * @dev: Associated udevice * @tag: Tag type * @ptr: Pointer as a value * @val: Value */ struct dmtag_node { struct list_head sibling; struct udevice *dev; enum dm_tag_t tag; union { void *ptr; ulong val; }; }; /** * dev_tag_set_ptr() - set a tag's value as a pointer * @dev: Device to operate * @tag: Tag type * @ptr: Pointer to set * * Set the value, @ptr, as of @tag associated with the device, @dev * * Return: 0 on success, -ve on error */ int dev_tag_set_ptr(struct udevice *dev, enum dm_tag_t tag, void *ptr); /** * dev_tag_set_val() set a tag's value as an integer * @dev: Device to operate * @tag: Tag type * @val: Value to set * * Set the value, @val, as of @tag associated with the device, @dev * * Return: on success, -ve on error */ int dev_tag_set_val(struct udevice *dev, enum dm_tag_t tag, ulong val); /** * dev_tag_get_ptr() - get a tag's value as a pointer * @dev: Device to operate * @tag: Tag type * @ptrp: Pointer to tag's value (pointer) * * Get a tag's value as a pointer * * Return: on success, -ve on error */ int dev_tag_get_ptr(struct udevice *dev, enum dm_tag_t tag, void **ptrp); /** * dev_tag_get_val() - get a tag's value as an integer * @dev: Device to operate * @tag: Tag type * @valp: Pointer to tag's value (ulong) * * Get a tag's value as an integer * * Return: 0 on success, -ve on error */ int dev_tag_get_val(struct udevice *dev, enum dm_tag_t tag, ulong *valp); /** * dev_tag_del() - delete a tag * @dev: Device to operate * @tag: Tag type * * Delete a tag of @tag associated with the device, @dev * * Return: 0 on success, -ve on error */ int dev_tag_del(struct udevice *dev, enum dm_tag_t tag); /** * dev_tag_del_all() - delete all tags * @dev: Device to operate * * Delete all the tags associated with the device, @dev * * Return: 0 on success, -ve on error */ int dev_tag_del_all(struct udevice *dev); #endif /* _DM_TAG_H */ |