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
  53 struct ab8500_gpadc;
  54
  55 struct ab8500_gpadc *ab8500_gpadc_get(char *name);
  56 int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
  57                 u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
  58 static 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
  64 int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
  65                 u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type);
  66 int 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);
  69 int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
  70                 u8 channel, int ad_value);
  71 void 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 */