target/linux/xburst/files-2.6.32/include/linux/jz4740-adc.h

   1
   2 #ifndef __LINUX_JZ4740_ADC
   3 #define __LINUX_JZ4740_ADC
   4
   5 #include <linux/device.h>
   6
   7 enum jz_adc_battery_scale {
   8         JZ_ADC_BATTERY_SCALE_2V5, /* Mesures voltages up to 2.5V */
   9         JZ_ADC_BATTERY_SCALE_7V5, /* Mesures voltages up to 7.5V */
  10 };
  11
  12 /*
  13  * jz4740_adc_read_battery_voltage - Read battery voltage from the ADC PBAT pin
  14  * @dev: Pointer to a jz4740-adc device
  15  * @scale: Whether to use 2.5V or 7.5V scale
  16  *
  17  * Returns: Battery voltage in mircovolts
  18  *
  19  * Context: Process
  20 */
  21 long jz4740_adc_read_battery_voltage(struct device *dev,
  22                                         enum jz_adc_battery_scale scale);
  23
  24
  25 #endif