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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5d4d823d0a
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Reviewed-by: Eric Anholt <eric@anholt.net> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20190613114548.GC13119@kroah.com
93 lines
2.3 KiB
C
93 lines
2.3 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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debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
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minor->debugfs_root, &vc4->load_tracker_enabled);
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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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