1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * adc.h  -- Driver for NXP PCF50633 ADC
4  *
5  * (C) 2006-2008 by Openmoko, Inc.
6  * All rights reserved.
7  */
8 
9 #ifndef __LINUX_MFD_PCF50633_ADC_H
10 #define __LINUX_MFD_PCF50633_ADC_H
11 
12 #include <linux/mfd/pcf50633/core.h>
13 #include <linux/platform_device.h>
14 
15 /* ADC Registers */
16 #define PCF50633_REG_ADCC3		0x52
17 #define PCF50633_REG_ADCC2		0x53
18 #define PCF50633_REG_ADCC1		0x54
19 #define PCF50633_REG_ADCS1		0x55
20 #define PCF50633_REG_ADCS2		0x56
21 #define PCF50633_REG_ADCS3		0x57
22 
23 #define PCF50633_ADCC1_ADCSTART		0x01
24 #define PCF50633_ADCC1_RES_8BIT		0x02
25 #define PCF50633_ADCC1_RES_10BIT	0x00
26 #define PCF50633_ADCC1_AVERAGE_NO	0x00
27 #define PCF50633_ADCC1_AVERAGE_4	0x04
28 #define PCF50633_ADCC1_AVERAGE_8	0x08
29 #define PCF50633_ADCC1_AVERAGE_16	0x0c
30 #define PCF50633_ADCC1_MUX_BATSNS_RES	0x00
31 #define PCF50633_ADCC1_MUX_BATSNS_SUBTR	0x10
32 #define PCF50633_ADCC1_MUX_ADCIN2_RES	0x20
33 #define PCF50633_ADCC1_MUX_ADCIN2_SUBTR	0x30
34 #define PCF50633_ADCC1_MUX_BATTEMP	0x60
35 #define PCF50633_ADCC1_MUX_ADCIN1	0x70
36 #define PCF50633_ADCC1_AVERAGE_MASK	0x0c
37 #define PCF50633_ADCC1_ADCMUX_MASK	0xf0
38 
39 #define PCF50633_ADCC2_RATIO_NONE	0x00
40 #define PCF50633_ADCC2_RATIO_BATTEMP	0x01
41 #define PCF50633_ADCC2_RATIO_ADCIN1	0x02
42 #define PCF50633_ADCC2_RATIO_BOTH	0x03
43 #define PCF50633_ADCC2_RATIOSETTL_100US 0x04
44 
45 #define PCF50633_ADCC3_ACCSW_EN		0x01
46 #define PCF50633_ADCC3_NTCSW_EN		0x04
47 #define PCF50633_ADCC3_RES_DIV_TWO	0x10
48 #define PCF50633_ADCC3_RES_DIV_THREE	0x00
49 
50 #define PCF50633_ADCS3_REF_NTCSW	0x00
51 #define PCF50633_ADCS3_REF_ACCSW	0x10
52 #define PCF50633_ADCS3_REF_2V0		0x20
53 #define PCF50633_ADCS3_REF_VISA		0x30
54 #define PCF50633_ADCS3_REF_2V0_2	0x70
55 #define PCF50633_ADCS3_ADCRDY		0x80
56 
57 #define PCF50633_ADCS3_ADCDAT1L_MASK	0x03
58 #define PCF50633_ADCS3_ADCDAT2L_MASK	0x0c
59 #define PCF50633_ADCS3_ADCDAT2L_SHIFT	2
60 #define PCF50633_ASCS3_REF_MASK		0x70
61 
62 extern int
63 pcf50633_adc_async_read(struct pcf50633 *pcf, int mux, int avg,
64 		void (*callback)(struct pcf50633 *, void *, int),
65 		void *callback_param);
66 extern int
67 pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg);
68 
69 #endif /* __LINUX_PCF50633_ADC_H */
70