148c92022SRussell King /* 248c92022SRussell King * linux/drivers/mfd/ucb1x00-assabet.c 348c92022SRussell King * 448c92022SRussell King * Copyright (C) 2001-2003 Russell King, All Rights Reserved. 548c92022SRussell King * 648c92022SRussell King * This program is free software; you can redistribute it and/or modify 748c92022SRussell King * it under the terms of the GNU General Public License as published by 848c92022SRussell King * the Free Software Foundation; either version 2 of the License. 948c92022SRussell King * 1048c92022SRussell King * We handle the machine-specific bits of the UCB1x00 driver here. 1148c92022SRussell King */ 1248c92022SRussell King #include <linux/module.h> 1348c92022SRussell King #include <linux/init.h> 1448c92022SRussell King #include <linux/fs.h> 1548c92022SRussell King #include <linux/proc_fs.h> 1648c92022SRussell King #include <linux/device.h> 1748c92022SRussell King 1848c92022SRussell King #include <asm/dma.h> 1948c92022SRussell King 2048c92022SRussell King #include "ucb1x00.h" 2148c92022SRussell King 2248c92022SRussell King #define UCB1X00_ATTR(name,input)\ 230c55445fSTony Jones static ssize_t name##_show(struct device *dev, struct device_attribute *attr, 240c55445fSTony Jones char *buf) \ 2548c92022SRussell King { \ 2648c92022SRussell King struct ucb1x00 *ucb = classdev_to_ucb1x00(dev); \ 2748c92022SRussell King int val; \ 2848c92022SRussell King ucb1x00_adc_enable(ucb); \ 2948c92022SRussell King val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC); \ 3048c92022SRussell King ucb1x00_adc_disable(ucb); \ 3148c92022SRussell King return sprintf(buf, "%d\n", val); \ 3248c92022SRussell King } \ 330c55445fSTony Jones static DEVICE_ATTR(name,0444,name##_show,NULL) 3448c92022SRussell King 3548c92022SRussell King UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1); 3648c92022SRussell King UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0); 3748c92022SRussell King UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2); 3848c92022SRussell King 3948c92022SRussell King static int ucb1x00_assabet_add(struct ucb1x00_dev *dev) 4048c92022SRussell King { 410c55445fSTony Jones device_create_file(&dev->ucb->dev, &device_attr_vbatt); 420c55445fSTony Jones device_create_file(&dev->ucb->dev, &device_attr_vcharger); 430c55445fSTony Jones device_create_file(&dev->ucb->dev, &device_attr_batt_temp); 4448c92022SRussell King return 0; 4548c92022SRussell King } 4648c92022SRussell King 4748c92022SRussell King static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev) 4848c92022SRussell King { 490c55445fSTony Jones device_remove_file(&dev->ucb->cdev, &device_attr_batt_temp); 500c55445fSTony Jones device_remove_file(&dev->ucb->cdev, &device_attr_vcharger); 510c55445fSTony Jones device_remove_file(&dev->ucb->cdev, &device_attr_vbatt); 5248c92022SRussell King } 5348c92022SRussell King 5448c92022SRussell King static struct ucb1x00_driver ucb1x00_assabet_driver = { 5548c92022SRussell King .add = ucb1x00_assabet_add, 5648c92022SRussell King .remove = ucb1x00_assabet_remove, 5748c92022SRussell King }; 5848c92022SRussell King 5948c92022SRussell King static int __init ucb1x00_assabet_init(void) 6048c92022SRussell King { 6148c92022SRussell King return ucb1x00_register_driver(&ucb1x00_assabet_driver); 6248c92022SRussell King } 6348c92022SRussell King 6448c92022SRussell King static void __exit ucb1x00_assabet_exit(void) 6548c92022SRussell King { 6648c92022SRussell King ucb1x00_unregister_driver(&ucb1x00_assabet_driver); 6748c92022SRussell King } 6848c92022SRussell King 6948c92022SRussell King module_init(ucb1x00_assabet_init); 7048c92022SRussell King module_exit(ucb1x00_assabet_exit); 7148c92022SRussell King 7248c92022SRussell King MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>"); 7348c92022SRussell King MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver"); 7448c92022SRussell King MODULE_LICENSE("GPL"); 75