diff options
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/Makefile | 4 | ||||
| -rw-r--r-- | drivers/mfd/ucb1x00-assabet.c | 73 |
2 files changed, 77 insertions, 0 deletions
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index a05cd15..adb29b5 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -6,3 +6,7 @@ obj-$(CONFIG_MCP) += mcp-core.o obj-$(CONFIG_MCP_SA11X0) += mcp-sa11x0.o obj-$(CONFIG_MCP_UCB1200) += ucb1x00-core.o obj-$(CONFIG_MCP_UCB1200_TS) += ucb1x00-ts.o + +ifeq ($(CONFIG_SA1100_ASSABET),y) +obj-$(CONFIG_MCP_UCB1200) += ucb1x00-assabet.o +endif diff --git a/drivers/mfd/ucb1x00-assabet.c b/drivers/mfd/ucb1x00-assabet.c new file mode 100644 index 0000000..e325fa7 --- /dev/null +++ b/drivers/mfd/ucb1x00-assabet.c @@ -0,0 +1,73 @@ +/* + * linux/drivers/mfd/ucb1x00-assabet.c + * + * Copyright (C) 2001-2003 Russell King, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. + * + * We handle the machine-specific bits of the UCB1x00 driver here. + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/fs.h> +#include <linux/proc_fs.h> +#include <linux/device.h> + +#include <asm/dma.h> + +#include "ucb1x00.h" + +#define UCB1X00_ATTR(name,input)\ +static ssize_t name##_show(struct class_device *dev, char *buf) \ +{ \ + struct ucb1x00 *ucb = classdev_to_ucb1x00(dev); \ + int val; \ + ucb1x00_adc_enable(ucb); \ + val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC); \ + ucb1x00_adc_disable(ucb); \ + return sprintf(buf, "%d\n", val); \ +} \ +static CLASS_DEVICE_ATTR(name,0444,name##_show,NULL) + +UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1); +UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0); +UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2); + +static int ucb1x00_assabet_add(struct ucb1x00_dev *dev) +{ + class_device_create_file(&dev->ucb->cdev, &class_device_attr_vbatt); + class_device_create_file(&dev->ucb->cdev, &class_device_attr_vcharger); + class_device_create_file(&dev->ucb->cdev, &class_device_attr_batt_temp); + return 0; +} + +static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev) +{ + class_device_remove_file(&dev->ucb->cdev, &class_device_attr_batt_temp); + class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vcharger); + class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vbatt); +} + +static struct ucb1x00_driver ucb1x00_assabet_driver = { + .add = ucb1x00_assabet_add, + .remove = ucb1x00_assabet_remove, +}; + +static int __init ucb1x00_assabet_init(void) +{ + return ucb1x00_register_driver(&ucb1x00_assabet_driver); +} + +static void __exit ucb1x00_assabet_exit(void) +{ + ucb1x00_unregister_driver(&ucb1x00_assabet_driver); +} + +module_init(ucb1x00_assabet_init); +module_exit(ucb1x00_assabet_exit); + +MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>"); +MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver"); +MODULE_LICENSE("GPL"); |
