1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/* Copyright Statement:
*
* This software/firmware and related documentation ("MediaTek Software") are
* protected under relevant copyright laws. The information contained herein
* is confidential and proprietary to MediaTek Inc. and/or its licensors.
* Without the prior written permission of MediaTek inc. and/or its licensors,
* any reproduction, modification, use or disclosure of MediaTek Software,
* and information contained herein, in whole or in part, shall be strictly prohibited.
*
* MediaTek Inc. (C) 2010. All rights reserved.
*
* BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
* THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OWIFIAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
* CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
* SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
* STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
* CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*
* The following software/firmware and/or related documentation ("MediaTek Software")
* have been modified by MediaTek Inc. All revisions are subject to any receiver's
* applicable license agreements with MediaTek Inc.
*/
/*
* from kevin and simplicity it by rubbitxiao
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <linux/sched.h>
#include <asm/current.h>
#include <asm/uaccess.h>
#include <linux/fcntl.h>
#include <linux/poll.h>
#include <linux/time.h>
#include <linux/delay.h>
#include <linux/miscdevice.h>
#include <linux/gpio.h>
#include <mach/wmt_iomux.h>
MODULE_LICENSE("Dual BSD/GPL");
#define WIFI_POWER_DRIVER_NAME "wmtWifi"
extern void wifi_power_ctrl_comm(int open,int mdelay);
extern void force_remove_sdio2(void);
extern void wmt_detect_sdio2(void);
static struct semaphore wr_mtx;
enum LEVEL {
LOW = 0,
HIGH,
};
static int WIFI_open(struct inode *inode, struct file *file)
{
printk("%s: major %d minor %d (pid %d)\n", __func__,
imajor(inode),
iminor(inode),
current->pid
);
return 0;
}
static int WIFI_close(struct inode *inode, struct file *file)
{
printk("%s: major %d minor %d (pid %d)\n", __func__,
imajor(inode),
iminor(inode),
current->pid
);
return 0;
}
ssize_t WIFI_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
{
int retval = -EIO;
char local[4] = {0};
static int opened = 0;
down(&wr_mtx);
if (count > 0) {
if (0 == copy_from_user(local, buf, (count > 4) ? 4 : count)) {
printk("WIFI_write %c\n", local[0]);
if (local[0] == '0' && opened == 1) {
force_remove_sdio2();
msleep(100);
//wifi_power_ctrl_comm(0,0);
gpio_direction_output(WMT_PIN_GP1_GPIO14, HIGH);
msleep(10);
gpio_direction_output(WMT_PIN_GP62_SUSGPIO1,LOW);
printk("WMT turn off WIFI OK!\n");
opened = 0;
retval = count;
}
else if (local[0] == '1' && opened == 0) {//reset pin is reversed
printk("rest / pmu_en - low\n");
gpio_direction_output(WMT_PIN_GP1_GPIO14, HIGH);
//wifi_power_ctrl_comm(0,00);
gpio_direction_output(WMT_PIN_GP62_SUSGPIO1,LOW);
msleep(100);
printk("pmu_en high with 200ms delay\n");
//wifi_power_ctrl_comm(1,100);
gpio_direction_output(WMT_PIN_GP62_SUSGPIO1,HIGH);
msleep(3);
//printk("rst pin high, with 200ms delay\n");
gpio_direction_output(WMT_PIN_GP1_GPIO14, LOW);
msleep(12);
wmt_detect_sdio2();
//wmt_detect_sdio2();
msleep(3000);
opened = 1;
retval = count;
printk("WMT turn on WIFI success!\n");
}
}
}
up(&wr_mtx);
return (retval);
}
struct file_operations wifi_fops = {
.open = WIFI_open,
.release = WIFI_close,
.write = WIFI_write,
};
static struct miscdevice wifi_power = {
.minor = MISC_DYNAMIC_MINOR,
.name = WIFI_POWER_DRIVER_NAME,
.fops = &wifi_fops,
};
static int WIFI_init(void)
{
int ret;
int ret1;
sema_init(&wr_mtx, 1);
ret = misc_register(&wifi_power);
ret1 = gpio_request(WMT_PIN_GP1_GPIO14, "wifi reset pin");
if(ret1 < 0) {
printk("reques gpio:%x failed!!! for wifi\n",WMT_PIN_GP1_GPIO14);
return -1;
}else{
printk("request gpio:%d for wifi success!!!\n",WMT_PIN_GP1_GPIO14);
}
//WMT_PIN_GP62_SUSGPIO1
ret1 = gpio_request(WMT_PIN_GP62_SUSGPIO1, "wifi power pin");
if(ret1 < 0) {
printk("reques gpio:%x failed!!! for wifi\n",WMT_PIN_GP62_SUSGPIO1);
return -1;
}else{
printk("request gpio:%d for wifi success!!!\n",WMT_PIN_GP62_SUSGPIO1);
}
gpio_direction_output(WMT_PIN_GP1_GPIO14, HIGH);
gpio_direction_output(WMT_PIN_GP62_SUSGPIO1, LOW);
return ret;
}
static void WIFI_exit(void)
{
misc_deregister(&wifi_power);
gpio_free(WMT_PIN_GP1_GPIO14);
gpio_free(WMT_PIN_GP62_SUSGPIO1);
}
module_init(WIFI_init);
module_exit(WIFI_exit);
|
