LXR linux/include/linux/mfd/abx500/ab8500-gpadc.h

   1/*
   2 * Copyright (C) 2010 ST-Ericsson SA
   3 * Licensed under GPLv2.
   4 *
   5 * Author: Arun R Murthy <arun.murthy@stericsson.com>
   6 * Author: Daniel Willerud <daniel.willerud@stericsson.com>
   7 * Author: M'boumba Cedric Madianga <cedric.madianga@stericsson.com>
   8 */
   9
  10#ifndef _AB8500_GPADC_H
  11#define _AB8500_GPADC_H
  12
  13/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2
  14 * and ADCHwSel[4:0] in GPADCCtrl3 ) */
  15#define BAT_CTRL                0x01
  16#define BTEMP_BALL              0x02
  17#define MAIN_CHARGER_V          0x03
  18#define ACC_DETECT1             0x04
  19#define ACC_DETECT2             0x05
  20#define ADC_AUX1                0x06
  21#define ADC_AUX2                0x07
  22#define MAIN_BAT_V              0x08
  23#define VBUS_V                  0x09
  24#define MAIN_CHARGER_C          0x0A
  25#define USB_CHARGER_C           0x0B
  26#define BK_BAT_V                0x0C
  27#define DIE_TEMP                0x0D
  28#define USB_ID                  0x0E
  29#define XTAL_TEMP               0x12
  30#define VBAT_TRUE_MEAS          0x13
  31#define BAT_CTRL_AND_IBAT       0x1C
  32#define VBAT_MEAS_AND_IBAT      0x1D
  33#define VBAT_TRUE_MEAS_AND_IBAT 0x1E
  34#define BAT_TEMP_AND_IBAT       0x1F
  35
  36/* Virtual channel used only for ibat convertion to ampere
  37 * Battery current conversion (ibat) cannot be requested as a single conversion
  38 *  but it is always in combination with other input requests
  39 */
  40#define IBAT_VIRTUAL_CHANNEL            0xFF
  41
  42#define SAMPLE_1        1
  43#define SAMPLE_4        4
  44#define SAMPLE_8        8
  45#define SAMPLE_16       16
  46#define RISING_EDGE     0
  47#define FALLING_EDGE    1
  48
  49/* Arbitrary ADC conversion type constants */
  50#define ADC_SW                          0
  51#define ADC_HW                          1
  52
  53struct ab8500_gpadc;
  54
  55struct ab8500_gpadc *ab8500_gpadc_get(char *name);
  56int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
  57                u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
  58static inline int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel)
  59{
  60        return ab8500_gpadc_sw_hw_convert(gpadc, channel,
  61                        SAMPLE_16, 0, 0, ADC_SW);
  62}
  63
  64int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
  65                u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
  66int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
  67                u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type,
  68                int *ibat);
  69int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
  70                u8 channel, int ad_value);
  71void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc,
  72                        u16 *vmain_l, u16 *vmain_h, u16 *btemp_l, u16 *btemp_h,
  73                        u16 *vbat_l, u16 *vbat_h, u16 *ibat_l, u16 *ibat_h);
  74
  75#endif /* _AB8500_GPADC_H */
  76