drivers/gpu/drm/xe/xe_tile_sysfs.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/xe/xe_tile_sysfs.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/xe/xe_tile_sysfs.c
Extension
.c
Size
1170 bytes
Lines
62
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2023 Intel Corporation
 */

#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <drm/drm_managed.h>

#include "xe_device_types.h"
#include "xe_pm.h"
#include "xe_tile_sysfs.h"
#include "xe_vram_freq.h"

static void xe_tile_sysfs_kobj_release(struct kobject *kobj)
{
	kfree(kobj);
}

static const struct kobj_type xe_tile_sysfs_kobj_type = {
	.release = xe_tile_sysfs_kobj_release,
	.sysfs_ops = &kobj_sysfs_ops,
};

static void tile_sysfs_fini(void *arg)
{
	struct xe_tile *tile = arg;

	kobject_put(tile->sysfs);
}

int xe_tile_sysfs_init(struct xe_tile *tile)
{
	struct xe_device *xe = tile_to_xe(tile);
	struct device *dev = xe->drm.dev;
	struct kobj_tile *kt;
	int err;

	kt = kzalloc_obj(*kt);
	if (!kt)
		return -ENOMEM;

	kobject_init(&kt->base, &xe_tile_sysfs_kobj_type);
	kt->tile = tile;

	err = kobject_add(&kt->base, &dev->kobj, "tile%d", tile->id);
	if (err)
		goto err_object;

	tile->sysfs = &kt->base;

	err = xe_vram_freq_sysfs_init(tile);
	if (err)
		goto err_object;

	return devm_add_action_or_reset(xe->drm.dev, tile_sysfs_fini, tile);

err_object:
	kobject_put(&kt->base);
	return err;
}

Annotation

Implementation Notes