android内核函数说明

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pmu相关常用函数：

#include <linux/regulator/machine.h>
static struct regulator *regulator_LDO23;

regulator_LDO23 = regulator_get(NULL, "LCD_3V3");
  if (IS_ERR(regulator_LDO23)) {
   printk("failed to get resource %s\n", "LCD_3V3\n");
  }

  if(blank_mode == FB_BLANK_POWERDOWN) {
   regulator_disable(regulator_LDO23);
   printk(" Disable LCD_3V3\n");
  }
  regulator_put(regulator_LDO23);
  regulator_LDO23 = ERR_PTR(-ENODEV);

regulator_LDO23 = regulator_get(NULL, "LCD_3V3");
  if (IS_ERR(regulator_LDO23)) {
   printk("failed to get resource %s\n", "LCD_3V3\n");
  }
  regulator_enable(regulator_LDO23);
  printk(" Enable LCD_3V3\n");
  regulator_put(regulator_LDO23);
  regulator_LDO23 = ERR_PTR(-ENODEV);

######################################################################

#include <linux/wakelock.h>

struct wake_lock vbus_wake_lock;

wake_lock_init(&vbus_wake_lock, WAKE_LOCK_SUSPEND, "vbus_present");

wake_lock(&vbus_wake_lock);

wake_lock_timeout(&vbus_wake_lock, HZ / 2);

wake_unlock(&vbus_wake_lock);

#####################################################################

#include <linux/workqueue.h>

struct delayed_work charge_curr_work;

INIT_DELAYED_WORK_DEFERRABLE(&charge_curr_work, change_curr_work);

static void change_curr_work(struct work_struct *work)
{

}

schedule_delayed_work(&data->charge_curr_work, 5000);

####################################################################

#define PQ24166_DEBUG 0

void bq24166_DEBUG (char *format, ...){
#if PQ24166_DEBUG
    char    buf[512];
    va_list arg_pt;
    va_start(arg_pt, format);
    vsprintf(buf,format,arg_pt);
    printk("PQ24166_DEBUG:: %s",buf);
#endif
}

bq24166_DEBUG("+++Supply-IN disconnected\n");

####################################################################

irq_set_irq_wake(gpio_to_irq(CHARGE_USB), 1);

####################################################################

#include <plat/gpio-cfg.h>

#include <linux/gpio.h>

  err = gpio_request(EXYNOS5_GPY5(5), "GPD5");
  if (err)
  printk(KERN_ERR "#### failed to request GPD5_5 ####\n");

s3c_gpio_setpull(EXYNOS5_GPY5(5), S3C_GPIO_PULL_NONE);
gpio_direction_output(EXYNOS5_GPY5(5), 0);
gpio_free(EXYNOS5_GPY5(5));