xe_tile_sysfs.c

 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_pm.h"
11#include "xe_tile.h"
12#include "xe_tile_sysfs.h"
13#include "xe_vram_freq.h"
14
15static void xe_tile_sysfs_kobj_release(struct kobject *kobj)
16{
17	kfree(kobj);
18}
19
20static const struct kobj_type xe_tile_sysfs_kobj_type = {
21	.release = xe_tile_sysfs_kobj_release,
22	.sysfs_ops = &kobj_sysfs_ops,
23};
24
25static void tile_sysfs_fini(void *arg)
26{
27	struct xe_tile *tile = arg;
28
29	kobject_put(tile->sysfs);
30}
31
32int xe_tile_sysfs_init(struct xe_tile *tile)
33{
34	struct xe_device *xe = tile_to_xe(tile);
35	struct device *dev = xe->drm.dev;
36	struct kobj_tile *kt;
37	int err;
38
39	kt = kzalloc(sizeof(*kt), GFP_KERNEL);
40	if (!kt)
41		return -ENOMEM;
42
43	kobject_init(&kt->base, &xe_tile_sysfs_kobj_type);
44	kt->tile = tile;
45
46	err = kobject_add(&kt->base, &dev->kobj, "tile%d", tile->id);
47	if (err)
48		goto err_object;
49
50	tile->sysfs = &kt->base;
51
52	err = xe_vram_freq_sysfs_init(tile);
53	if (err)
54		goto err_object;
55
56	return devm_add_action_or_reset(xe->drm.dev, tile_sysfs_fini, tile);
57
58err_object:
59	kobject_put(&kt->base);
60	return err;
61}