diff options
Diffstat (limited to 'arch/arm/mach-wmt/wmt_misc.c')
| -rwxr-xr-x | arch/arm/mach-wmt/wmt_misc.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/arch/arm/mach-wmt/wmt_misc.c b/arch/arm/mach-wmt/wmt_misc.c new file mode 100755 index 00000000..1e93c905 --- /dev/null +++ b/arch/arm/mach-wmt/wmt_misc.c @@ -0,0 +1,300 @@ +#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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