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