diff options
Diffstat (limited to 'drivers/staging/iio/adc/adt7410.c')
| -rw-r--r-- | drivers/staging/iio/adc/adt7410.c | 64 |
1 files changed, 31 insertions, 33 deletions
diff --git a/drivers/staging/iio/adc/adt7410.c b/drivers/staging/iio/adc/adt7410.c index 917b6921e24d..4157596ea3b0 100644 --- a/drivers/staging/iio/adc/adt7410.c +++ b/drivers/staging/iio/adc/adt7410.c @@ -257,7 +257,7 @@ static ssize_t adt7410_store_resolution(struct device *dev, chip->config = config; - return ret; + return len; } static IIO_DEVICE_ATTR(resolution, S_IRUGO | S_IWUSR, @@ -293,26 +293,17 @@ static ssize_t adt7410_convert_temperature(struct adt7410_chip_info *chip, { char sign = ' '; - if (chip->config & ADT7410_RESOLUTION) { - if (data & ADT7410_T16_VALUE_SIGN) { - /* convert supplement to positive value */ - data = (u16)((ADT7410_T16_VALUE_SIGN << 1) - (u32)data); - sign = '-'; - } - return sprintf(buf, "%c%d.%.7d\n", sign, - (data >> ADT7410_T16_VALUE_FLOAT_OFFSET), - (data & ADT7410_T16_VALUE_FLOAT_MASK) * 78125); - } else { - if (data & ADT7410_T13_VALUE_SIGN) { - /* convert supplement to positive value */ - data >>= ADT7410_T13_VALUE_OFFSET; - data = (ADT7410_T13_VALUE_SIGN << 1) - data; - sign = '-'; - } - return sprintf(buf, "%c%d.%.4d\n", sign, - (data >> ADT7410_T13_VALUE_FLOAT_OFFSET), - (data & ADT7410_T13_VALUE_FLOAT_MASK) * 625); + if (!(chip->config & ADT7410_RESOLUTION)) + data &= ~0x7; + + if (data & ADT7410_T16_VALUE_SIGN) { + /* convert supplement to positive value */ + data = (u16)((ADT7410_T16_VALUE_SIGN << 1) - (u32)data); + sign = '-'; } + return sprintf(buf, "%c%d.%.7d\n", sign, + (data >> ADT7410_T16_VALUE_FLOAT_OFFSET), + (data & ADT7410_T16_VALUE_FLOAT_MASK) * 78125); } static ssize_t adt7410_show_value(struct device *dev, @@ -720,6 +711,7 @@ static int __devinit adt7410_probe(struct i2c_client *client, struct iio_dev *indio_dev; int ret = 0; unsigned long *adt7410_platform_data = client->dev.platform_data; + unsigned long local_pdata[] = {0, 0}; indio_dev = iio_device_alloc(sizeof(*chip)); if (indio_dev == NULL) { @@ -737,12 +729,15 @@ static int __devinit adt7410_probe(struct i2c_client *client, indio_dev->info = &adt7410_info; indio_dev->modes = INDIO_DIRECT_MODE; + if (!adt7410_platform_data) + adt7410_platform_data = local_pdata; + /* CT critcal temperature event. line 0 */ if (client->irq) { ret = request_threaded_irq(client->irq, NULL, &adt7410_event_handler, - IRQF_TRIGGER_LOW, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, id->name, indio_dev); if (ret) @@ -754,20 +749,23 @@ static int __devinit adt7410_probe(struct i2c_client *client, ret = request_threaded_irq(adt7410_platform_data[0], NULL, &adt7410_event_handler, - adt7410_platform_data[1], + adt7410_platform_data[1] | + IRQF_ONESHOT, id->name, indio_dev); if (ret) goto error_unreg_ct_irq; } - if (client->irq && adt7410_platform_data[0]) { + ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); + if (ret) { + ret = -EIO; + goto error_unreg_int_irq; + } - ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config); - if (ret) { - ret = -EIO; - goto error_unreg_int_irq; - } + chip->config |= ADT7410_RESOLUTION; + + if (client->irq && adt7410_platform_data[0]) { /* set irq polarity low level */ chip->config &= ~ADT7410_CT_POLARITY; @@ -776,12 +774,12 @@ static int __devinit adt7410_probe(struct i2c_client *client, chip->config |= ADT7410_INT_POLARITY; else chip->config &= ~ADT7410_INT_POLARITY; + } - ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, chip->config); - if (ret) { - ret = -EIO; - goto error_unreg_int_irq; - } + ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, chip->config); + if (ret) { + ret = -EIO; + goto error_unreg_int_irq; } ret = iio_device_register(indio_dev); if (ret) |