1/*
2 * adc.h  -- Driver for NXP PCF50633 ADC
3 *
4 * (C) 2006-2008 by Openmoko, Inc.
5 * All rights reserved.
6 *
7 * This program is free software; you can redistribute  it and/or modify it
8 * under  the terms of  the GNU General  Public License as published by the
9 * Free Software Foundation;  either version 2 of the  License, or (at your
10 * option) any later version.
11 */
12
13#ifndef __LINUX_MFD_PCF50633_ADC_H
14#define __LINUX_MFD_PCF50633_ADC_H
15
16#include <linux/mfd/pcf50633/core.h>
17#include <linux/platform_device.h>
18
19/* ADC Registers */
20#define PCF50633_REG_ADCC3		0x52
21#define PCF50633_REG_ADCC2		0x53
22#define PCF50633_REG_ADCC1		0x54
23#define PCF50633_REG_ADCS1		0x55
24#define PCF50633_REG_ADCS2		0x56
25#define PCF50633_REG_ADCS3		0x57
26
27#define PCF50633_ADCC1_ADCSTART		0x01
28#define PCF50633_ADCC1_RES_8BIT		0x02
29#define PCF50633_ADCC1_RES_10BIT	0x00
30#define PCF50633_ADCC1_AVERAGE_NO	0x00
31#define PCF50633_ADCC1_AVERAGE_4	0x04
32#define PCF50633_ADCC1_AVERAGE_8	0x08
33#define PCF50633_ADCC1_AVERAGE_16	0x0c
34#define PCF50633_ADCC1_MUX_BATSNS_RES	0x00
35#define PCF50633_ADCC1_MUX_BATSNS_SUBTR	0x10
36#define PCF50633_ADCC1_MUX_ADCIN2_RES	0x20
37#define PCF50633_ADCC1_MUX_ADCIN2_SUBTR	0x30
38#define PCF50633_ADCC1_MUX_BATTEMP	0x60
39#define PCF50633_ADCC1_MUX_ADCIN1	0x70
40#define PCF50633_ADCC1_AVERAGE_MASK	0x0c
41#define PCF50633_ADCC1_ADCMUX_MASK	0xf0
42
43#define PCF50633_ADCC2_RATIO_NONE	0x00
44#define PCF50633_ADCC2_RATIO_BATTEMP	0x01
45#define PCF50633_ADCC2_RATIO_ADCIN1	0x02
46#define PCF50633_ADCC2_RATIO_BOTH	0x03
47#define PCF50633_ADCC2_RATIOSETTL_100US 0x04
48
49#define PCF50633_ADCC3_ACCSW_EN		0x01
50#define PCF50633_ADCC3_NTCSW_EN		0x04
51#define PCF50633_ADCC3_RES_DIV_TWO	0x10
52#define PCF50633_ADCC3_RES_DIV_THREE	0x00
53
54#define PCF50633_ADCS3_REF_NTCSW	0x00
55#define PCF50633_ADCS3_REF_ACCSW	0x10
56#define PCF50633_ADCS3_REF_2V0		0x20
57#define PCF50633_ADCS3_REF_VISA		0x30
58#define PCF50633_ADCS3_REF_2V0_2	0x70
59#define PCF50633_ADCS3_ADCRDY		0x80
60
61#define PCF50633_ADCS3_ADCDAT1L_MASK	0x03
62#define PCF50633_ADCS3_ADCDAT2L_MASK	0x0c
63#define PCF50633_ADCS3_ADCDAT2L_SHIFT	2
64#define PCF50633_ASCS3_REF_MASK		0x70
65
66extern int
67pcf50633_adc_async_read(struct pcf50633 *pcf, int mux, int avg,
68		void (*callback)(struct pcf50633 *, void *, int),
69		void *callback_param);
70extern int
71pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg);
72
73#endif /* __LINUX_PCF50633_ADC_H */
74