aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorBalaji Rao <balajirrao@openmoko.org>2009-01-08 19:49:26 -0500
committerSamuel Ortiz <samuel@sortiz.org>2009-01-10 19:34:23 -0500
commit08c3e06a5eb27d43b712adef18379f8464425e71 (patch)
tree63950d3beac51f8ca4e51c4fae7959a50608f31e /include
parentf52046b14b1e1a8a02ae48d0c69d39c5e204644f (diff)
mfd: PCF50633 adc driver
This patch adds basic support for the PCF50633 ADC. The subtractive mode is not supported yet. Since we don't have adc subsystem, it currently lives in drivers/mfd. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Acked-by: Jonathan Cameron <jonathan.cameron@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mfd/pcf50633/adc.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/include/linux/mfd/pcf50633/adc.h b/include/linux/mfd/pcf50633/adc.h
new file mode 100644
index 000000000000..56669b4183ad
--- /dev/null
+++ b/include/linux/mfd/pcf50633/adc.h
@@ -0,0 +1,72 @@
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_10BIT 0x02
29#define PCF50633_ADCC1_AVERAGE_NO 0x00
30#define PCF50633_ADCC1_AVERAGE_4 0x04
31#define PCF50633_ADCC1_AVERAGE_8 0x08
32#define PCF50633_ADCC1_AVERAGE_16 0x0c
33#define PCF50633_ADCC1_MUX_BATSNS_RES 0x00
34#define PCF50633_ADCC1_MUX_BATSNS_SUBTR 0x10
35#define PCF50633_ADCC1_MUX_ADCIN2_RES 0x20
36#define PCF50633_ADCC1_MUX_ADCIN2_SUBTR 0x30
37#define PCF50633_ADCC1_MUX_BATTEMP 0x60
38#define PCF50633_ADCC1_MUX_ADCIN1 0x70
39#define PCF50633_ADCC1_AVERAGE_MASK 0x0c
40#define PCF50633_ADCC1_ADCMUX_MASK 0xf0
41
42#define PCF50633_ADCC2_RATIO_NONE 0x00
43#define PCF50633_ADCC2_RATIO_BATTEMP 0x01
44#define PCF50633_ADCC2_RATIO_ADCIN1 0x02
45#define PCF50633_ADCC2_RATIO_BOTH 0x03
46#define PCF50633_ADCC2_RATIOSETTL_100US 0x04
47
48#define PCF50633_ADCC3_ACCSW_EN 0x01
49#define PCF50633_ADCC3_NTCSW_EN 0x04
50#define PCF50633_ADCC3_RES_DIV_TWO 0x10
51#define PCF50633_ADCC3_RES_DIV_THREE 0x00
52
53#define PCF50633_ADCS3_REF_NTCSW 0x00
54#define PCF50633_ADCS3_REF_ACCSW 0x10
55#define PCF50633_ADCS3_REF_2V0 0x20
56#define PCF50633_ADCS3_REF_VISA 0x30
57#define PCF50633_ADCS3_REF_2V0_2 0x70
58#define PCF50633_ADCS3_ADCRDY 0x80
59
60#define PCF50633_ADCS3_ADCDAT1L_MASK 0x03
61#define PCF50633_ADCS3_ADCDAT2L_MASK 0x0c
62#define PCF50633_ADCS3_ADCDAT2L_SHIFT 2
63#define PCF50633_ASCS3_REF_MASK 0x70
64
65extern int
66pcf50633_adc_async_read(struct pcf50633 *pcf, int mux, int avg,
67 void (*callback)(struct pcf50633 *, void *, int),
68 void *callback_param);
69extern int
70pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg);
71
72#endif /* __LINUX_PCF50633_ADC_H */