int thread_regulate_fan(void *data)
{
unsigned long temp;
pr_info("Thread awake\n");
while(!kthread_should_stop())
{
if(gMode == AUTO)
{
temp = exynos_thermal_get_value();
if(temp < 57)
{
set_pwm(0);
pwm_dis();
}
else if(temp >= 57 && temp < 63)
{
set_pwm(20);
pwm_en();
}
else if(temp >= 63 && temp < 68)
{
set_pwm(50);
pwm_en();
}
else if(temp >= 68)
{
set_pwm(100);
pwm_en();
}
pr_info("Temperature of exynos is : %ld.\n", temp);
}
msleep(2000);
}
return 0;
}
void KeyScan_PlayTone(UINT8 bType)
{
PWM_struct PWMInfo;
UINT32 uiKeyToneTimerID;
UINT32 uiKeyPlayTime = 100; //ms
if((ubIsPlaying)||(!bKeyToneEn))
return;
PWMInfo.uiDiv = 180;
PWMInfo.uiPrd = 20;
PWMInfo.uiOnCycle = 0;
PWMInfo.uiInv = 0;
PWMInfo.uiRise = 0;
PWMInfo.uiFall = 10;
pwm_open(PWMID_0);
pwm_set(PWMID_0, &PWMInfo);
if(timer_openAutoClose((UINT *)&uiKeyToneTimerID, (FP)KeyScan_PlayToneStop) == E_OK)
{
pwm_en(PWMID_0);
timer_set(uiKeyToneTimerID, uiKeyPlayTime, _TIMER_CTRL_ONE_SHOT|_TIMER_CTRL_INT_ENABLE, _TIMER_PLAY);
}
ubIsPlaying = TRUE;
}
static ssize_t skeleton_set_mode(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
if(count <= CMD_MAX_LEN)
{
memcpy(cmd, buf, count);
}
else
{
return 0;
}
if(strncmp(cmd, auto_str, count) == 0)
{
gMode = AUTO;
pr_info("Fan Control : chanded mode to automatic\n");
if(thread_is_running == 0)
regulation_task = kthread_run(&thread_regulate_fan,
NULL, "regulation_task");
thread_is_running = 1;
}
else if(strncmp(cmd, man_str, count) == 0)
{
gMode = MAN;
pr_info("Fan Control : changed mode to manual\n");
set_pwm(50);
pwm_en();
if(thread_is_running == 1)
kthread_stop(regulation_task);
thread_is_running = 0;
}
else gMode = AUTO;
return count;
}
/**
Play sound (beep) by using PWM
Play sound (beep) by using PWM.
@param void
@return void
*/
void GPIOMap_SoundPlayPWM(void)
{
PWM_CFG PWMInfo;
PWMInfo.uiDiv = 99; // 1500Hz (base-clock (3MHz) / (div + 1) / basic-period)
PWMInfo.uiPrd = 20; // basic period
PWMInfo.uiRise = 0; // +50
PWMInfo.uiFall = 10; // -50
PWMInfo.uiOnCycle = 50; // 33 ms
PWMInfo.uiInv = 0; // not invert
pwm_set(PWM_BEEP_SOUND, &PWMInfo);
pwm_en(PWM_BEEP_SOUND);
}
static ssize_t skeleton_set_duty(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
char * ret;
int duty;
duty = simple_strtoul(buf, &ret, 10);
pr_info("Fan Control : duty of %d trying to be set\n", duty);
if(gMode == MAN)
{
pr_info("Fan Control : duty of %d was set\n", duty);
set_pwm(duty);
pwm_en();
}
return sizeof(buf);
}