drivers/gpu/drm/imagination/pvr_debugfs.c

   1 // SPDX-License-Identifier: GPL-2.0-only OR MIT
   2 /* Copyright (c) 2023 Imagination Technologies Ltd. */
   3
   4 #include "pvr_debugfs.h"
   5
   6 #include "pvr_device.h"
   7 #include "pvr_fw_trace.h"
   8 #include "pvr_params.h"
   9
  10 #include <linux/dcache.h>
  11 #include <linux/debugfs.h>
  12 #include <linux/err.h>
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15
  16 #include <drm/drm_device.h>
  17 #include <drm/drm_file.h>
  18 #include <drm/drm_print.h>
  19
  20 static const struct pvr_debugfs_entry pvr_debugfs_entries[] = {
  21         {"pvr_params", pvr_params_debugfs_init},
  22         {"pvr_fw", pvr_fw_trace_debugfs_init},
  23 };
  24
  25 void
  26 pvr_debugfs_init(struct drm_minor *minor)
  27 {
  28         struct drm_device *drm_dev = minor->dev;
  29         struct pvr_device *pvr_dev = to_pvr_device(drm_dev);
  30         struct dentry *root = minor->debugfs_root;
  31         size_t i;
  32
  33         for (i = 0; i < ARRAY_SIZE(pvr_debugfs_entries); ++i) {
  34                 const struct pvr_debugfs_entry *entry = &pvr_debugfs_entries[i];
  35                 struct dentry *dir;
  36
  37                 dir = debugfs_create_dir(entry->name, root);
  38                 if (IS_ERR(dir)) {
  39                         drm_warn(drm_dev,
  40                                  "failed to create debugfs dir '%s' (err=%d)",
  41                                  entry->name, (int)PTR_ERR(dir));
  42                         continue;
  43                 }
  44
  45                 entry->init(pvr_dev, dir);
  46         }
  47 }
  48
  49 /*
  50  * Since all entries are created under &drm_minor->debugfs_root, there's no
  51  * need for a pvr_debugfs_fini() as DRM will clean up everything under its root
  52  * automatically.
  53  */