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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright © 2014 Broadcom
*/
#include <linux/seq_file.h>
#include <linux/circ_buf.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <drm/drmP.h>
#include "vc4_drv.h"
#include "vc4_regs.h"
struct vc4_debugfs_info_entry {
struct list_head link;
struct drm_info_list info;
};
/**
* Called at drm_dev_register() time on each of the minors registered
* by the DRM device, to attach the debugfs files.
*/
int
vc4_debugfs_init(struct drm_minor *minor)
{
struct vc4_dev *vc4 = to_vc4_dev(minor->dev);
struct vc4_debugfs_info_entry *entry;
struct dentry *dentry;
dentry = debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
minor->debugfs_root,
&vc4->load_tracker_enabled);
if (!dentry)
return -ENOMEM;
list_for_each_entry(entry, &vc4->debugfs_list, link) {
int ret = drm_debugfs_create_files(&entry->info, 1,
minor->debugfs_root, minor);
if (ret)
return ret;
}
return 0;
}
static int vc4_debugfs_regset32(struct seq_file *m, void *unused)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
struct debugfs_regset32 *regset = node->info_ent->data;
struct drm_printer p = drm_seq_file_printer(m);
drm_print_regset32(&p, regset);
return 0;
}
/**
* Registers a debugfs file with a callback function for a vc4 component.
*
* This is like drm_debugfs_create_files(), but that can only be
* called a given DRM minor, while the various VC4 components want to
* register their debugfs files during the component bind process. We
* track the request and delay it to be called on each minor during
* vc4_debugfs_init().
*/
void vc4_debugfs_add_file(struct drm_device *dev,
const char *name,
int (*show)(struct seq_file*, void*),
void *data)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct vc4_debugfs_info_entry *entry =
devm_kzalloc(dev->dev, sizeof(*entry), GFP_KERNEL);
if (!entry)
return;
entry->info.name = name;
entry->info.show = show;
entry->info.data = data;
list_add(&entry->link, &vc4->debugfs_list);
}
void vc4_debugfs_add_regset32(struct drm_device *drm,
const char *name,
struct debugfs_regset32 *regset)
{
vc4_debugfs_add_file(drm, name, vc4_debugfs_regset32, regset);
}
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