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/*
* Copyright 2012 WonderMedia Technologies, Inc. All Rights Reserved.
*
* This PROPRIETARY SOFTWARE is the property of WonderMedia Technologies, Inc.
* and may contain trade secrets and/or other confidential information of
* WonderMedia Technologies, Inc. This file shall not be disclosed to any third party,
* in whole or in part, without prior written consent of WonderMedia.
*
* THIS PROPRIETARY SOFTWARE AND ANY RELATED DOCUMENTATION ARE PROVIDED AS IS,
* WITH ALL FAULTS, AND WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED,
* AND WonderMedia TECHNOLOGIES, INC. DISCLAIMS ALL EXPRESS OR IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
*/
#include <linux/module.h> /* Specifically, a module */
#include <linux/kernel.h> /* We're doing kernel work */
#include <linux/proc_fs.h> /* Necessary because we use the proc fs */
#include <linux/uaccess.h> //for copy_from_user
#include <linux/pwm.h>
#include <mach/hardware.h>//WMT_MMAP_OFFSET
#define procfs_name "bt_test"
int skip = 0x00;
extern struct proc_dir_entry proc_root;
//extern void mt_bt_power_off(void);
//extern int mt_bt_power_on(void);
/**
* This structure hold information about the /proc file
*
*/
struct proc_dir_entry *Our_Proc_test;
extern void dump_uart_info(void);
static int procfile_read(char *buffer,
char **buffer_location,
off_t offset, int buffer_length, int *eof, void *data)
{
int ret = 0;
/*
* We give all of our information in one go, so if the
* user asks us if we have more information the
* answer should always be no.
*
* This is important because the standard read
* function from the library would continue to issue
* the read system call until the kernel replies
* that it has no more information, or until its
* buffer is filled.
*/
printk("enter dump\n");
dump_uart_info();
return ret;
}
//configure pwm1 pin
void config_pwm1_pin1(int enable)
{
int val;
if(enable) {
val = readb(0xd8110200+WMT_MMAP_OFFSET);
val &= ~(1 << 7);
writeb(val, 0xd8110200+WMT_MMAP_OFFSET);
}else{
val = readb(0xd8110200+WMT_MMAP_OFFSET);
val |= (1 << 7);
writeb(val, 0xd8110200+WMT_MMAP_OFFSET);
}
}
static struct pwm_device * g_pwm1 =NULL;
void enable_pwm1_32KHz1(int enable)
{
static int first = 0x01;
if(first) {
first = 0x00;
printk("begint ot pwm request\n");
g_pwm1 = pwm_request(0x01,"mtk6622 bluetooth 32KHz");
if(!g_pwm1){
printk("can not request pwm1 for bluetooth mtk6622\n");
return;
}
}
if(enable) {
pwm_config(g_pwm1, 15625, 31250);
pwm_enable(g_pwm1);
printk("enable 32khz output\n");
}else{
pwm_disable(g_pwm1);
printk("disable 32khz output\n");
}
}
/*
*this funciton just for facilitate debugging
*command formater: echo "digital strings" > /proc/usb_serail
* setenv wmt.6620.pmu "e3:3:D8110040:D8110080:D81100c0:D81100c4:D81100c8"
* saveenv
*/
static int procfile_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char tmp[128];
char printbuf[128];
int num;
int option;
if(buffer && !copy_from_user(tmp, buffer, sizeof(tmp))) {
num = sscanf(tmp, "%d", &option);
printk("your input: option:%d\n",option);
switch(option) {
case 0: //power off bluetooth
//mt_bt_power_off();
break;
case 1: //power on bluetooth chip
//mt_bt_power_on();
break;
case 2: //open bluetooth interruption
//mt_bt_enable_irq();
break;
case 3: //close bluetooth interruption
//mt_bt_disable_irq();
break;
case 4: //enable 32KHz
//config_pwm1_pin1(1);
//enable_pwm1_32KHz1(1);
pwm_32KHZ_control(1);
break;
case 5: //disable 32KHz
//enable_pwm1_32KHz1(0);
pwm_32KHZ_control(0);
break;
default:
printk("test command,for example: echo 1 > /proc/bt_test\n");
}
return strlen(tmp);
}else{
printk("copy_from_user failed or buffer is null\n");
}
}
int test_skeleton_proc_init(void)
{
printk("enter test_skeleton_proc_init\n");
Our_Proc_test = create_proc_entry(procfs_name, 0644, NULL);
if (Our_Proc_test == NULL) {
//remove_proc_entry(procfs_name, &proc_root);
printk(KERN_ALERT "Error: Could not initialize /proc/%s\n",
procfs_name);
return -ENOMEM;
}
Our_Proc_test->read_proc = procfile_read;
Our_Proc_test->write_proc = procfile_write;
// //Our_Proc_test->owner = THIS_MODULE;
// Our_Proc_test->mode = S_IFREG | S_IRUGO;
// Our_Proc_test->uid = 0;
// Our_Proc_test->gid = 0;
// Our_Proc_test->size = 37; //size what is its mean ?
return 0; /* everything is ok */
}
int deinit_proc_init(void)
{
if(Our_Proc_test != NULL){
remove_proc_entry(procfs_name,NULL);
Our_Proc_test = NULL;
}
return 0;
}
EXPORT_SYMBOL(test_skeleton_proc_init);
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