Source of ds620.c - linux-imx - PHYTEC BitBucket (Stash)

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​
        data->last_updated = jiffies;
        data->valid = 1;
    }
abort:
    mutex_unlock(&data->update_lock);
​
    return ret;
}
​
static ssize_t show_temp(struct device *dev, struct device_attribute *da,
static ssize_t temp_show(struct device *dev, struct device_attribute *da,
             char *buf)
{
    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
    struct ds620_data *data = ds620_update_client(dev);
​
    if (IS_ERR(data))
        return PTR_ERR(data);
​
    return sprintf(buf, "%d\n", ((data->temp[attr->index] / 8) * 625) / 10);
}
​
static ssize_t set_temp(struct device *dev, struct device_attribute *da,
            const char *buf, size_t count)
static ssize_t temp_store(struct device *dev, struct device_attribute *da,
              const char *buf, size_t count)
{
    int res;
    long val;
​
    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
    struct ds620_data *data = dev_get_drvdata(dev);
    struct i2c_client *client = data->client;
​
    res = kstrtol(buf, 10, &val);
​
Show more
    val = (clamp_val(val, -128000, 128000) * 10 / 625) * 8;
​
    mutex_lock(&data->update_lock);
    data->temp[attr->index] = val;
    i2c_smbus_write_word_swapped(client, DS620_REG_TEMP[attr->index],
                     data->temp[attr->index]);
    mutex_unlock(&data->update_lock);
    return count;
}
​
static ssize_t show_alarm(struct device *dev, struct device_attribute *da,
static ssize_t alarm_show(struct device *dev, struct device_attribute *da,
              char *buf)
{
    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
    struct ds620_data *data = ds620_update_client(dev);
    struct i2c_client *client;
    u16 conf, new_conf;
    int res;
​
    if (IS_ERR(data))
        return PTR_ERR(data);
Show more
    if (conf != new_conf) {
        res = i2c_smbus_write_word_swapped(client, DS620_REG_CONF,
                           new_conf);
        if (res < 0)
            return res;
    }
​
    return sprintf(buf, "%d\n", !!(conf & attr->index));
}
​
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp, set_temp, 1);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp, set_temp, 2);
static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL,
              DS620_REG_CONFIG_TLF);
static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL,
              DS620_REG_CONFIG_THF);
static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_min, temp, 1);
static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, 2);
static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, alarm, DS620_REG_CONFIG_TLF);
static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, DS620_REG_CONFIG_THF);
​
static struct attribute *ds620_attrs[] = {
    &sensor_dev_attr_temp1_input.dev_attr.attr,
    &sensor_dev_attr_temp1_min.dev_attr.attr,
    &sensor_dev_attr_temp1_max.dev_attr.attr,
    &sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
    &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
    NULL
};
​