1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Marvell Bluetooth driver: debugfs related functions
4 *
5 * Copyright (C) 2009, Marvell International Ltd.
6 **/
7
8#include <linux/debugfs.h>
9#include <linux/slab.h>
10
11#include <net/bluetooth/bluetooth.h>
12#include <net/bluetooth/hci_core.h>
13
14#include "btmrvl_drv.h"
15
16struct btmrvl_debugfs_data {
17	struct dentry *config_dir;
18	struct dentry *status_dir;
19};
20
21static ssize_t btmrvl_hscfgcmd_write(struct file *file,
22			const char __user *ubuf, size_t count, loff_t *ppos)
23{
24	struct btmrvl_private *priv = file->private_data;
25	long result, ret;
26
27	ret = kstrtol_from_user(ubuf, count, 10, &result);
28	if (ret)
29		return ret;
30
31	priv->btmrvl_dev.hscfgcmd = result;
32
33	if (priv->btmrvl_dev.hscfgcmd) {
34		btmrvl_prepare_command(priv);
35		wake_up_interruptible(&priv->main_thread.wait_q);
36	}
37
38	return count;
39}
40
41static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
42						size_t count, loff_t *ppos)
43{
44	struct btmrvl_private *priv = file->private_data;
45	char buf[16];
46	int ret;
47
48	ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
49						priv->btmrvl_dev.hscfgcmd);
50
51	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
52}
53
54static const struct file_operations btmrvl_hscfgcmd_fops = {
55	.read	= btmrvl_hscfgcmd_read,
56	.write	= btmrvl_hscfgcmd_write,
57	.open	= simple_open,
58	.llseek = default_llseek,
59};
60
61static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
62						size_t count, loff_t *ppos)
63{
64	struct btmrvl_private *priv = file->private_data;
65	long result, ret;
66
67	ret = kstrtol_from_user(ubuf, count, 10, &result);
68	if (ret)
69		return ret;
70
71	priv->btmrvl_dev.pscmd = result;
72
73	if (priv->btmrvl_dev.pscmd) {
74		btmrvl_prepare_command(priv);
75		wake_up_interruptible(&priv->main_thread.wait_q);
76	}
77
78	return count;
79
80}
81
82static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
83						size_t count, loff_t *ppos)
84{
85	struct btmrvl_private *priv = file->private_data;
86	char buf[16];
87	int ret;
88
89	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
90
91	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
92}
93
94static const struct file_operations btmrvl_pscmd_fops = {
95	.read = btmrvl_pscmd_read,
96	.write = btmrvl_pscmd_write,
97	.open = simple_open,
98	.llseek = default_llseek,
99};
100
101static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
102						size_t count, loff_t *ppos)
103{
104	struct btmrvl_private *priv = file->private_data;
105	long result, ret;
106
107	ret = kstrtol_from_user(ubuf, count, 10, &result);
108	if (ret)
109		return ret;
110
111	priv->btmrvl_dev.hscmd = result;
112	if (priv->btmrvl_dev.hscmd) {
113		btmrvl_prepare_command(priv);
114		wake_up_interruptible(&priv->main_thread.wait_q);
115	}
116
117	return count;
118}
119
120static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
121						size_t count, loff_t *ppos)
122{
123	struct btmrvl_private *priv = file->private_data;
124	char buf[16];
125	int ret;
126
127	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
128
129	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
130}
131
132static const struct file_operations btmrvl_hscmd_fops = {
133	.read	= btmrvl_hscmd_read,
134	.write	= btmrvl_hscmd_write,
135	.open	= simple_open,
136	.llseek = default_llseek,
137};
138
139void btmrvl_debugfs_init(struct hci_dev *hdev)
140{
141	struct btmrvl_private *priv = hci_get_drvdata(hdev);
142	struct btmrvl_debugfs_data *dbg;
143
144	if (!hdev->debugfs)
145		return;
146
147	dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
148	priv->debugfs_data = dbg;
149
150	if (!dbg) {
151		BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
152		return;
153	}
154
155	dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
156
157	debugfs_create_u8("psmode", 0644, dbg->config_dir,
158			  &priv->btmrvl_dev.psmode);
159	debugfs_create_file("pscmd", 0644, dbg->config_dir,
160			    priv, &btmrvl_pscmd_fops);
161	debugfs_create_x16("gpiogap", 0644, dbg->config_dir,
162			   &priv->btmrvl_dev.gpio_gap);
163	debugfs_create_u8("hsmode", 0644, dbg->config_dir,
164			  &priv->btmrvl_dev.hsmode);
165	debugfs_create_file("hscmd", 0644, dbg->config_dir,
166			    priv, &btmrvl_hscmd_fops);
167	debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
168			    priv, &btmrvl_hscfgcmd_fops);
169
170	dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
171	debugfs_create_u8("curpsmode", 0444, dbg->status_dir,
172			  &priv->adapter->psmode);
173	debugfs_create_u8("psstate", 0444, dbg->status_dir,
174			  &priv->adapter->ps_state);
175	debugfs_create_u8("hsstate", 0444, dbg->status_dir,
176			  &priv->adapter->hs_state);
177	debugfs_create_u8("txdnldready", 0444, dbg->status_dir,
178			  &priv->btmrvl_dev.tx_dnld_rdy);
179}
180
181void btmrvl_debugfs_remove(struct hci_dev *hdev)
182{
183	struct btmrvl_private *priv = hci_get_drvdata(hdev);
184	struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
185
186	if (!dbg)
187		return;
188
189	debugfs_remove_recursive(dbg->config_dir);
190	debugfs_remove_recursive(dbg->status_dir);
191
192	kfree(dbg);
193}
194