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e31b97ef19
Fixes: c9be804c8c ("drm/vc4: Use common helpers for debugfs setup by the driver components.")
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190403213629.GA31570@lkp-ib03
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
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* Copyright © 2014 Broadcom
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/seq_file.h>
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#include <linux/circ_buf.h>
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#include <linux/ctype.h>
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#include <linux/debugfs.h>
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#include <drm/drmP.h>
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#include "vc4_drv.h"
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#include "vc4_regs.h"
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struct vc4_debugfs_info_entry {
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struct list_head link;
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struct drm_info_list info;
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};
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/**
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* Called at drm_dev_register() time on each of the minors registered
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* by the DRM device, to attach the debugfs files.
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*/
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int
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vc4_debugfs_init(struct drm_minor *minor)
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{
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struct vc4_dev *vc4 = to_vc4_dev(minor->dev);
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struct vc4_debugfs_info_entry *entry;
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struct dentry *dentry;
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dentry = debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
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minor->debugfs_root,
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&vc4->load_tracker_enabled);
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if (!dentry)
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return -ENOMEM;
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list_for_each_entry(entry, &vc4->debugfs_list, link) {
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int ret = drm_debugfs_create_files(&entry->info, 1,
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minor->debugfs_root, minor);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int vc4_debugfs_regset32(struct seq_file *m, void *unused)
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{
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struct drm_info_node *node = (struct drm_info_node *)m->private;
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struct debugfs_regset32 *regset = node->info_ent->data;
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struct drm_printer p = drm_seq_file_printer(m);
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drm_print_regset32(&p, regset);
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return 0;
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}
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/**
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* Registers a debugfs file with a callback function for a vc4 component.
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*
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* This is like drm_debugfs_create_files(), but that can only be
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* called a given DRM minor, while the various VC4 components want to
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* register their debugfs files during the component bind process. We
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* track the request and delay it to be called on each minor during
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* vc4_debugfs_init().
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*/
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void vc4_debugfs_add_file(struct drm_device *dev,
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const char *name,
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int (*show)(struct seq_file*, void*),
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void *data)
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{
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struct vc4_dev *vc4 = to_vc4_dev(dev);
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struct vc4_debugfs_info_entry *entry =
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devm_kzalloc(dev->dev, sizeof(*entry), GFP_KERNEL);
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if (!entry)
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return;
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entry->info.name = name;
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entry->info.show = show;
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entry->info.data = data;
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list_add(&entry->link, &vc4->debugfs_list);
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}
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void vc4_debugfs_add_regset32(struct drm_device *drm,
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const char *name,
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struct debugfs_regset32 *regset)
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{
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vc4_debugfs_add_file(drm, name, vc4_debugfs_regset32, regset);
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}
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