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 */ 54