diff options
Diffstat (limited to 'drivers/hwmon/max1111.c')
| -rw-r--r-- | drivers/hwmon/max1111.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/drivers/hwmon/max1111.c b/drivers/hwmon/max1111.c index 84ef3a898707..362a40eb6129 100644 --- a/drivers/hwmon/max1111.c +++ b/drivers/hwmon/max1111.c @@ -106,11 +106,15 @@ static ssize_t show_adc(struct device *dev, if (ret < 0) return ret; - return sprintf(buf, "%d\n", ret); + /* + * assume the reference voltage to be 2.048V, with an 8-bit sample, + * the LSB weight is 8mV + */ + return sprintf(buf, "%d\n", ret * 8); } #define MAX1111_ADC_ATTR(_id) \ - SENSOR_DEVICE_ATTR(adc##_id##_in, S_IRUGO, show_adc, NULL, _id) + SENSOR_DEVICE_ATTR(in##_id##_input, S_IRUGO, show_adc, NULL, _id) static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); static MAX1111_ADC_ATTR(0); @@ -120,10 +124,10 @@ static MAX1111_ADC_ATTR(3); static struct attribute *max1111_attributes[] = { &dev_attr_name.attr, - &sensor_dev_attr_adc0_in.dev_attr.attr, - &sensor_dev_attr_adc1_in.dev_attr.attr, - &sensor_dev_attr_adc2_in.dev_attr.attr, - &sensor_dev_attr_adc3_in.dev_attr.attr, + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, NULL, }; @@ -224,17 +228,7 @@ static struct spi_driver max1111_driver = { .remove = __devexit_p(max1111_remove), }; -static int __init max1111_init(void) -{ - return spi_register_driver(&max1111_driver); -} -module_init(max1111_init); - -static void __exit max1111_exit(void) -{ - spi_unregister_driver(&max1111_driver); -} -module_exit(max1111_exit); +module_spi_driver(max1111_driver); MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"); MODULE_DESCRIPTION("MAX1111 ADC Driver"); |