projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 48c92022 RK |
1 | /* |
| 2 | * linux/drivers/mfd/ucb1x00-assabet.c | |
| 3 | * | |
| 4 | * Copyright (C) 2001-2003 Russell King, All Rights Reserved. | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License. | |
| 9 | * | |
| 10 | * We handle the machine-specific bits of the UCB1x00 driver here. | |
| 11 | */ | |
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/fs.h> | |
| 15 | #include <linux/proc_fs.h> | |
| 16 | #include <linux/device.h> | |
| c8602edf | 17 | #include <linux/mfd/ucb1x00.h> |
| 48c92022 | 18 | |
| 48c92022 | 19 | #define UCB1X00_ATTR(name,input)\ |
| cd4c1eb5 | 20 | static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \ |
| 0c55445f | 21 | char *buf) \ |
| 48c92022 RK |
22 | { \ |
| 23 | struct ucb1x00 *ucb = classdev_to_ucb1x00(dev); \ | |
| 24 | int val; \ | |
| 25 | ucb1x00_adc_enable(ucb); \ | |
| 26 | val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC); \ | |
| 27 | ucb1x00_adc_disable(ucb); \ | |
| 28 | return sprintf(buf, "%d\n", val); \ | |
| 29 | } \ | |
| 0c55445f | 30 | static DEVICE_ATTR(name,0444,name##_show,NULL) |
| 48c92022 RK |
31 | |
| 32 | UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1); | |
| 33 | UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0); | |
| 34 | UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2); | |
| 35 | ||
| 36 | static int ucb1x00_assabet_add(struct ucb1x00_dev *dev) | |
| 37 | { | |
| cd4c1eb5 RK |
38 | device_create_file(&dev->ucb->dev, &dev_attr_vbatt); |
| 39 | device_create_file(&dev->ucb->dev, &dev_attr_vcharger); | |
| 40 | device_create_file(&dev->ucb->dev, &dev_attr_batt_temp); | |
| 48c92022 RK |
41 | return 0; |
| 42 | } | |
| 43 | ||
| 44 | static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev) | |
| 45 | { | |
| cd4c1eb5 RK |
46 | device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp); |
| 47 | device_remove_file(&dev->ucb->dev, &dev_attr_vcharger); | |
| 48 | device_remove_file(&dev->ucb->dev, &dev_attr_vbatt); | |
| 48c92022 RK |
49 | } |
| 50 | ||
| 51 | static struct ucb1x00_driver ucb1x00_assabet_driver = { | |
| 52 | .add = ucb1x00_assabet_add, | |
| 53 | .remove = ucb1x00_assabet_remove, | |
| 54 | }; | |
| 55 | ||
| 56 | static int __init ucb1x00_assabet_init(void) | |
| 57 | { | |
| 58 | return ucb1x00_register_driver(&ucb1x00_assabet_driver); | |
| 59 | } | |
| 60 | ||
| 61 | static void __exit ucb1x00_assabet_exit(void) | |
| 62 | { | |
| 63 | ucb1x00_unregister_driver(&ucb1x00_assabet_driver); | |
| 64 | } | |
| 65 | ||
| 66 | module_init(ucb1x00_assabet_init); | |
| 67 | module_exit(ucb1x00_assabet_exit); | |
| 68 | ||
| 69 | MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>"); | |
| 70 | MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver"); | |
| 71 | MODULE_LICENSE("GPL"); |