Source of ltc2945.c - linux-imx - PHYTEC BitBucket (Stash)

Ignore whitespace
Show whitespace characters
Hide e-diff
Unified diff
Side-by-side diff
Source viewDiff to previous
 
         * in mOhm.
         */
        val = DIV_ROUND_CLOSEST(val, 25);
        break;
    default:
        return -EINVAL;
    }
    return val;
}
​
static ssize_t ltc2945_show_value(struct device *dev,
static ssize_t ltc2945_value_show(struct device *dev,
                  struct device_attribute *da, char *buf)
{
    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
    long long value;
​
    value = ltc2945_reg_to_val(dev, attr->index);
    if (value < 0)
        return value;
    return snprintf(buf, PAGE_SIZE, "%lld\n", value);
}
​
static ssize_t ltc2945_set_value(struct device *dev,
                     struct device_attribute *da,
                     const char *buf, size_t count)
static ssize_t ltc2945_value_store(struct device *dev,
                   struct device_attribute *da,
                   const char *buf, size_t count)
{
    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
    struct regmap *regmap = dev_get_drvdata(dev);
    u8 reg = attr->index;
    unsigned long val;
    u8 regbuf[3];
    int num_regs;
    int regval;
    int ret;
​
Show more
    } else {
        regval = clamp_val(regval, 0, 0xfff) << 4;
        regbuf[0] = regval >> 8;
        regbuf[1] = regval & 0xff;
        num_regs = 2;
    }
    ret = regmap_bulk_write(regmap, reg, regbuf, num_regs);
    return ret < 0 ? ret : count;
}
​
static ssize_t ltc2945_reset_history(struct device *dev,
static ssize_t ltc2945_history_store(struct device *dev,
                     struct device_attribute *da,
                     const char *buf, size_t count)
{
    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
    struct regmap *regmap = dev_get_drvdata(dev);
    u8 reg = attr->index;
    int num_regs = is_power_reg(reg) ? 3 : 2;
    u8 buf_min[3] = { 0xff, 0xff, 0xff };
    u8 buf_max[3] = { 0, 0, 0 };
    unsigned long val;
Show more
    }
    /* Reset maximum */
    ret = regmap_bulk_write(regmap, reg, buf_max, num_regs);
​
    /* Try resetting test mode even if there was an error */
    regmap_update_bits(regmap, LTC2945_CONTROL, CONTROL_TEST_MODE, 0);
​
    return ret ? : count;
}
​
static ssize_t ltc2945_show_bool(struct device *dev,
static ssize_t ltc2945_bool_show(struct device *dev,
                 struct device_attribute *da, char *buf)
{
    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
    struct regmap *regmap = dev_get_drvdata(dev);
    unsigned int fault;
    int ret;
​
    ret = regmap_read(regmap, LTC2945_FAULT, &fault);
    if (ret < 0)
        return ret;
​
    fault &= attr->index;
    if (fault)      /* Clear reported faults in chip register */
        regmap_update_bits(regmap, LTC2945_FAULT, attr->index, 0);
​
    return snprintf(buf, PAGE_SIZE, "%d\n", !!fault);
}
​
/* Input voltages */
​
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_VIN_H);
static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MIN_VIN_THRES_H);
static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MAX_VIN_THRES_H);
static SENSOR_DEVICE_ATTR(in1_lowest, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_MIN_VIN_H);
static SENSOR_DEVICE_ATTR(in1_highest, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_MAX_VIN_H);
static SENSOR_DEVICE_ATTR(in1_reset_history, S_IWUSR, NULL,
              ltc2945_reset_history, LTC2945_MIN_VIN_H);
​
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_ADIN_H);
static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MIN_ADIN_THRES_H);
static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MAX_ADIN_THRES_H);
static SENSOR_DEVICE_ATTR(in2_lowest, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_MIN_ADIN_H);
static SENSOR_DEVICE_ATTR(in2_highest, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_MAX_ADIN_H);
static SENSOR_DEVICE_ATTR(in2_reset_history, S_IWUSR, NULL,
              ltc2945_reset_history, LTC2945_MIN_ADIN_H);
static SENSOR_DEVICE_ATTR_RO(in1_input, ltc2945_value, LTC2945_VIN_H);
static SENSOR_DEVICE_ATTR_RW(in1_min, ltc2945_value, LTC2945_MIN_VIN_THRES_H);
static SENSOR_DEVICE_ATTR_RW(in1_max, ltc2945_value, LTC2945_MAX_VIN_THRES_H);
static SENSOR_DEVICE_ATTR_RO(in1_lowest, ltc2945_value, LTC2945_MIN_VIN_H);
static SENSOR_DEVICE_ATTR_RO(in1_highest, ltc2945_value, LTC2945_MAX_VIN_H);
static SENSOR_DEVICE_ATTR_WO(in1_reset_history, ltc2945_history,
                 LTC2945_MIN_VIN_H);
​
static SENSOR_DEVICE_ATTR_RO(in2_input, ltc2945_value, LTC2945_ADIN_H);
static SENSOR_DEVICE_ATTR_RW(in2_min, ltc2945_value, LTC2945_MIN_ADIN_THRES_H);
static SENSOR_DEVICE_ATTR_RW(in2_max, ltc2945_value, LTC2945_MAX_ADIN_THRES_H);
static SENSOR_DEVICE_ATTR_RO(in2_lowest, ltc2945_value, LTC2945_MIN_ADIN_H);
static SENSOR_DEVICE_ATTR_RO(in2_highest, ltc2945_value, LTC2945_MAX_ADIN_H);
static SENSOR_DEVICE_ATTR_WO(in2_reset_history, ltc2945_history,
                 LTC2945_MIN_ADIN_H);
​
/* Voltage alarms */
​
static SENSOR_DEVICE_ATTR(in1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_VIN_UV);
static SENSOR_DEVICE_ATTR(in1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_VIN_OV);
static SENSOR_DEVICE_ATTR(in2_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_ADIN_UV);
static SENSOR_DEVICE_ATTR(in2_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_ADIN_OV);
static SENSOR_DEVICE_ATTR_RO(in1_min_alarm, ltc2945_bool, FAULT_VIN_UV);
static SENSOR_DEVICE_ATTR_RO(in1_max_alarm, ltc2945_bool, FAULT_VIN_OV);
static SENSOR_DEVICE_ATTR_RO(in2_min_alarm, ltc2945_bool, FAULT_ADIN_UV);
static SENSOR_DEVICE_ATTR_RO(in2_max_alarm, ltc2945_bool, FAULT_ADIN_OV);
​
/* Currents (via sense resistor) */
​
static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_SENSE_H);
static SENSOR_DEVICE_ATTR(curr1_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MIN_SENSE_THRES_H);
static SENSOR_DEVICE_ATTR(curr1_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MAX_SENSE_THRES_H);
static SENSOR_DEVICE_ATTR(curr1_lowest, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_MIN_SENSE_H);
static SENSOR_DEVICE_ATTR(curr1_highest, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_MAX_SENSE_H);
static SENSOR_DEVICE_ATTR(curr1_reset_history, S_IWUSR, NULL,
              ltc2945_reset_history, LTC2945_MIN_SENSE_H);
static SENSOR_DEVICE_ATTR_RO(curr1_input, ltc2945_value, LTC2945_SENSE_H);
static SENSOR_DEVICE_ATTR_RW(curr1_min, ltc2945_value,
                 LTC2945_MIN_SENSE_THRES_H);
static SENSOR_DEVICE_ATTR_RW(curr1_max, ltc2945_value,
                 LTC2945_MAX_SENSE_THRES_H);
static SENSOR_DEVICE_ATTR_RO(curr1_lowest, ltc2945_value, LTC2945_MIN_SENSE_H);
static SENSOR_DEVICE_ATTR_RO(curr1_highest, ltc2945_value,
                 LTC2945_MAX_SENSE_H);
static SENSOR_DEVICE_ATTR_WO(curr1_reset_history, ltc2945_history,
                 LTC2945_MIN_SENSE_H);
​
/* Current alarms */
​
static SENSOR_DEVICE_ATTR(curr1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_SENSE_UV);
static SENSOR_DEVICE_ATTR(curr1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_SENSE_OV);
static SENSOR_DEVICE_ATTR_RO(curr1_min_alarm, ltc2945_bool, FAULT_SENSE_UV);
static SENSOR_DEVICE_ATTR_RO(curr1_max_alarm, ltc2945_bool, FAULT_SENSE_OV);
​
/* Power */
​
static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, ltc2945_show_value, NULL,
              LTC2945_POWER_H);
static SENSOR_DEVICE_ATTR(power1_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MIN_POWER_THRES_H);
static SENSOR_DEVICE_ATTR(power1_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
              ltc2945_set_value, LTC2945_MAX_POWER_THRES_H);
static SENSOR_DEVICE_ATTR(power1_input_lowest, S_IRUGO, ltc2945_show_value,
              NULL, LTC2945_MIN_POWER_H);
static SENSOR_DEVICE_ATTR(power1_input_highest, S_IRUGO, ltc2945_show_value,
              NULL, LTC2945_MAX_POWER_H);
static SENSOR_DEVICE_ATTR(power1_reset_history, S_IWUSR, NULL,
              ltc2945_reset_history, LTC2945_MIN_POWER_H);
static SENSOR_DEVICE_ATTR_RO(power1_input, ltc2945_value, LTC2945_POWER_H);
static SENSOR_DEVICE_ATTR_RW(power1_min, ltc2945_value,
                 LTC2945_MIN_POWER_THRES_H);
static SENSOR_DEVICE_ATTR_RW(power1_max, ltc2945_value,
                 LTC2945_MAX_POWER_THRES_H);
static SENSOR_DEVICE_ATTR_RO(power1_input_lowest, ltc2945_value,
                 LTC2945_MIN_POWER_H);
static SENSOR_DEVICE_ATTR_RO(power1_input_highest, ltc2945_value,
                 LTC2945_MAX_POWER_H);
static SENSOR_DEVICE_ATTR_WO(power1_reset_history, ltc2945_history,
                 LTC2945_MIN_POWER_H);
​
/* Power alarms */
​
static SENSOR_DEVICE_ATTR(power1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_POWER_UV);
static SENSOR_DEVICE_ATTR(power1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
              FAULT_POWER_OV);
static SENSOR_DEVICE_ATTR_RO(power1_min_alarm, ltc2945_bool, FAULT_POWER_UV);
static SENSOR_DEVICE_ATTR_RO(power1_max_alarm, ltc2945_bool, FAULT_POWER_OV);
​
static struct attribute *ltc2945_attrs[] = {
    &sensor_dev_attr_in1_input.dev_attr.attr,
    &sensor_dev_attr_in1_min.dev_attr.attr,
    &sensor_dev_attr_in1_max.dev_attr.attr,
    &sensor_dev_attr_in1_lowest.dev_attr.attr,
    &sensor_dev_attr_in1_highest.dev_attr.attr,
    &sensor_dev_attr_in1_reset_history.dev_attr.attr,
    &sensor_dev_attr_in1_min_alarm.dev_attr.attr,
    &sensor_dev_attr_in1_max_alarm.dev_attr.attr,