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#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h> // for msleep
#include <mach/hardware.h>//for REG32_VAL
#include <linux/gpio.h>
#include <mach/wmt_iomux.h>
#include <asm/atomic.h> // for atomic_inc atomis_dec added by rubbitxiao
#include <linux/etherdevice.h>
//added begin by rubbit
extern int wmt_getsyspara(char *varname, unsigned char *varval, int *varlen);
extern int wmt_setsyspara(char *varname, char *varval);
//#define WMT_PIN_GP2_SUSGPIO1 19
#define WIFI_POWER_PIN WMT_PIN_GP62_SUSGPIO1
//if you use API in the file ,you should #include <mach/wmt_misc.h>
void detect_wifi_module(void * pbool)
{
int retval = -1;
int varlen = 127;
char buf[200] = {0};
char *wifi;
char *bt;
char *gps;
char *tmp;
printk("detect_wifi_module\n");
retval = wmt_getsyspara("wmt.wifi.bluetooth.gps", buf, &varlen);
if(!retval)
{
//sscanf(buf, "%s:%s:%s",wifi,bt,gps);
if(strlen(buf) == 0) {
printk("uboot enviroment variant(wmt.wifi.bluetooth.gp) is not connect\n");
*(bool*)pbool = false;
return ;
}
tmp = buf;
printk("buf:%s\n",buf);
wifi = strsep(&tmp,":");
bt = strsep(&tmp,":");
gps = strsep(&tmp,":");
printk("wifi:%s, bt:%s, gps:%s\n",wifi,bt,gps);
if(!strncmp(wifi,"mtk_6620",8)) {
*(bool*)pbool = true;
printk("detect mtk_6620 modules:%d\n",*(bool*)pbool);
} else {
*(bool*)pbool = false;
printk("wifi_module:%s---%d\n",wifi,*(bool*)pbool);
}
return ;
}
printk("have not set uboot enviroment variant:wmt.wifi.bluetooth.gps\n");
return;
}
int bt_is_mtk6622 = -1;
int is_mtk6622(void)
{
if(bt_is_mtk6622==-1){
int retval = -1;
int varlen = 127;
char buf[200] = {0};
retval = wmt_getsyspara("wmt.bt.param", buf, &varlen);
bt_is_mtk6622 = 0;
if(!retval)
{
if(!strcmp(buf,"mtk_6622"))
bt_is_mtk6622 = 1;
}
}
return bt_is_mtk6622;
}
int bt_is_rda5991 = -1;
int is_rda5991(void)
{
if(bt_is_rda5991==-1){
int retval = -1;
int varlen = 127;
char buf[200] = {0};
retval = wmt_getsyspara("wmt.bt.param", buf, &varlen);
bt_is_rda5991 = 0;
if(!retval)
{
if(!strcmp(buf,"rda_5991"))
bt_is_rda5991 = 1;
}
}
return bt_is_rda5991;
}
struct wifi_gpio {
int name;
int active;
int delay;
int skip;
};
enum LEVEL {
LOW = 0,
HIGH,
};
static struct wifi_gpio l_wifi_gpio = {
.name = WIFI_POWER_PIN,
.active = 0,
.delay = 0,
.skip = 0x0,
};
int wifi_power_pin(int gpioNum, unsigned int active, int open)
{
int ret = 0;
if(open){
ret = gpio_request(gpioNum, "wifi power pin");
if(ret < 0) {
printk("reques gpio:%x failed!!! for wifi\n",gpioNum);
return -1;
}else{
printk("request gpio:%d for wifi success!!!\n", gpioNum);
}
if(active)
gpio_direction_output(gpioNum, HIGH);
else
gpio_direction_output(gpioNum, LOW);
printk("power on wifi\n");
} else {
if(active)
gpio_direction_output(gpioNum, LOW);
else
gpio_direction_output(gpioNum, HIGH);
printk("power down wifi\n");
gpio_free(gpioNum);
printk("release gpio\n");
}
}
atomic_t gVwifiPower = ATOMIC_INIT(0);
/*
*
* wmt.gpo.wifi format is the following:
* gpionum : active level : delay
*
* if mdelay is not set, then use l_wifi_gpio.delay as a open delay
* if mdelay is set, then use medlay as a open delay, althrough l_wifi_gpio.delay
* is specified by uboot var, if l_wifi_gpio.delay is not specified by uboot var,
* which have a default value of 1000ms
*/
void wifi_power_ctrl_comm(int open,int mdelay)
{
int ret=0;
int varlen = 127;
int retval;
char buf[200]={0};
printk("wifi_power_ctrl %d, delay:%d\n",open,l_wifi_gpio.delay);
// if(!open){
// //wait 200 ms for drv to stop
// msleep(200);
// }
if(open)
{
if( atomic_inc_return(&gVwifiPower) > 1 )
{
printk("gVwifiPower:%d\n",atomic_read(&gVwifiPower));
return;
}
}else
{
if(atomic_read(&gVwifiPower)<=0){
printk("power off before power on\n");
return;
}
if(atomic_dec_return(&gVwifiPower) > 0 )
{
printk("gVwifiPower:%d\n",atomic_read(&gVwifiPower));
return;
}
}
/*
* setenv wmt.gpo.wifi 9c:1:0
*/
retval = wmt_getsyspara("wmt.gpo.wifi", buf, &varlen);
if(!retval)
{
sscanf(buf, "%x:%x:%d", &(l_wifi_gpio.name), &(l_wifi_gpio.active), &(l_wifi_gpio.delay));
printk("wifi power up:%s\n", buf);
printk("name:0x%x,active:0x%x,open delay:%d\n", l_wifi_gpio.name,l_wifi_gpio.active,l_wifi_gpio.delay);
// l_wifi_gpio.skip = 0x01;
}else{
printk("use default wifi gpio: susgpio1\n");
printk("name:0x%x,active:0x%x,open delay:%d\n", l_wifi_gpio.name,l_wifi_gpio.active,l_wifi_gpio.delay);
// l_wifi_gpio.skip = 0x01;
}
next:
//excute_gpio_op(open);
wifi_power_pin(l_wifi_gpio.name, l_wifi_gpio.active, open);
if(open){
//wait 1 sec to hw init
if(mdelay)
msleep(mdelay);
else
msleep(l_wifi_gpio.delay);
}
}
void wifi_power_ctrl(int open)
{
wifi_power_ctrl_comm(open,1000);//unit is msec
//wifi_power_ctrl_comm(open,0x0);//unit is msec
}
/*
* wifi mac uboot variant:
* wmt.wifi.mac xx:xx:xx:xx:xx:xx
*/
static int is_dir_exit(const char* filename)
{
struct file *filep = NULL;
filep = filp_open(filename, O_RDONLY, 0);
if(IS_ERR(filep)){
printk("file %s do not exit\n",filename);
return 0x00;
}
filp_close(filep, 0);
return 1;
}
static int get_wifi_mac(const char * mac_name,unsigned char *buf_mac)
{
unsigned char buf[200];
int varlen =127;
int retval;
memset(buf,0,sizeof(buf));
retval = wmt_getsyspara(mac_name, buf, &varlen);
if(!retval)
{
sscanf(buf, "%x:%x:%x:%x:%x:%x", &(buf_mac[0]),&(buf_mac[1]),&(buf_mac[2]),
&(buf_mac[3]),&(buf_mac[4]),&(buf_mac[5]));
printk("wifi mac:%s\n", buf);
return 0x0;
}else{
printk("uboot variant:%s do not exit\n",mac_name);
random_ether_addr(buf_mac);
buf_mac[0] = 0x00;//prevent multi broadcast address
sprintf(buf,"%x:%x:%x:%x:%x:%x",buf_mac[0],buf_mac[1],buf_mac[2],
buf_mac[3],buf_mac[4],buf_mac[5]);
wmt_setsyspara(mac_name, buf);
return 0x01;
}
}
int generate_wifi_mac(unsigned char *buf_mac)
{
if(is_dir_exit("/system")){//means we do not generate mac address when firmware installing
return get_wifi_mac("wmt.wifi.mac",buf_mac);
}
return -1;
}
int irq_int_status(void)
{
unsigned long flags;
flags = arch_local_save_flags();
if(arch_irqs_disabled_flags(flags)){
printk("irq interruption disabled\n");
}else{
printk("irq interruption enabled\n");
}
}
EXPORT_SYMBOL(generate_wifi_mac);
EXPORT_SYMBOL(is_mtk6622);
EXPORT_SYMBOL(is_rda5991);
EXPORT_SYMBOL(wifi_power_ctrl);
EXPORT_SYMBOL(wifi_power_ctrl_comm);
EXPORT_SYMBOL(irq_int_status);
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