| Balaji Rao | 08c3e06 | 2009-01-09 01:49:26 +0100 | [diff] [blame] | 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 | |
| 65 | extern int |
| 66 | pcf50633_adc_async_read(struct pcf50633 *pcf, int mux, int avg, |
| 67 | void (*callback)(struct pcf50633 *, void *, int), |
| 68 | void *callback_param); |
| 69 | extern int |
| 70 | pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg); |
| 71 | |
| 72 | #endif /* __LINUX_PCF50633_ADC_H */ |