1 // SPDX-License-Identifier: MIT
2 /*
3 * Copyright © 2023 Intel Corporation
4 */
5
6 #include <linux/kobject.h>
7 #include <linux/sysfs.h>
8 #include <drm/drm_managed.h>
9
10 #include "xe_tile.h"
11 #include "xe_tile_sysfs.h"
12
xe_tile_sysfs_kobj_release(struct kobject * kobj)13 static void xe_tile_sysfs_kobj_release(struct kobject *kobj)
14 {
15 kfree(kobj);
16 }
17
18 static const struct kobj_type xe_tile_sysfs_kobj_type = {
19 .release = xe_tile_sysfs_kobj_release,
20 .sysfs_ops = &kobj_sysfs_ops,
21 };
22
tile_sysfs_fini(struct drm_device * drm,void * arg)23 static void tile_sysfs_fini(struct drm_device *drm, void *arg)
24 {
25 struct xe_tile *tile = arg;
26
27 kobject_put(tile->sysfs);
28 }
29
xe_tile_sysfs_init(struct xe_tile * tile)30 void xe_tile_sysfs_init(struct xe_tile *tile)
31 {
32 struct xe_device *xe = tile_to_xe(tile);
33 struct device *dev = xe->drm.dev;
34 struct kobj_tile *kt;
35 int err;
36
37 kt = kzalloc(sizeof(*kt), GFP_KERNEL);
38 if (!kt)
39 return;
40
41 kobject_init(&kt->base, &xe_tile_sysfs_kobj_type);
42 kt->tile = tile;
43
44 err = kobject_add(&kt->base, &dev->kobj, "tile%d", tile->id);
45 if (err) {
46 kobject_put(&kt->base);
47 drm_warn(&xe->drm, "failed to register TILE sysfs directory, err: %d\n", err);
48 return;
49 }
50
51 tile->sysfs = &kt->base;
52
53 err = drmm_add_action_or_reset(&xe->drm, tile_sysfs_fini, tile);
54 if (err)
55 drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",
56 __func__, err);
57 }
58