linux-imx
Public
Source
committed 3d628b29dbe72
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*/73
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val = val * 300;74
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break;75
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default:76
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return -EINVAL;77
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}78
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return val;80
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}81
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static ssize_t ltc4260_show_value(struct device *dev,82
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static ssize_t ltc4260_value_show(struct device *dev,83
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struct device_attribute *da, char *buf)84
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{85
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);86
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int value;87
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value = ltc4260_get_value(dev, attr->index);89
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if (value < 0)90
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return value;91
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return snprintf(buf, PAGE_SIZE, "%d\n", value);92
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}93
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static ssize_t ltc4260_show_bool(struct device *dev,94
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static ssize_t ltc4260_bool_show(struct device *dev,95
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struct device_attribute *da, char *buf)96
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{97
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);98
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struct regmap *regmap = dev_get_drvdata(dev);99
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unsigned int fault;100
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int ret;101
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ret = regmap_read(regmap, LTC4260_FAULT, &fault);103
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if (ret < 0)104
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return ret;105
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fault &= attr->index;107
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if (fault) /* Clear reported faults in chip register */108
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regmap_update_bits(regmap, LTC4260_FAULT, attr->index, 0);109
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return snprintf(buf, PAGE_SIZE, "%d\n", !!fault);111
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}112
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/* Voltages */114
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static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc4260_show_value, NULL,115
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LTC4260_SOURCE);116
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static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc4260_show_value, NULL,117
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LTC4260_ADIN);114
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static SENSOR_DEVICE_ATTR_RO(in1_input, ltc4260_value, LTC4260_SOURCE);115
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static SENSOR_DEVICE_ATTR_RO(in2_input, ltc4260_value, LTC4260_ADIN);118
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/*120
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* Voltage alarms121
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* UV/OV faults are associated with the input voltage, and the POWER BAD and122
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* FET SHORT faults are associated with the output voltage.123
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*/124
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static SENSOR_DEVICE_ATTR(in1_min_alarm, S_IRUGO, ltc4260_show_bool, NULL,125
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FAULT_UV);126
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static SENSOR_DEVICE_ATTR(in1_max_alarm, S_IRUGO, ltc4260_show_bool, NULL,127
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FAULT_OV);128
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static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, ltc4260_show_bool, NULL,129
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FAULT_POWER_BAD | FAULT_FET_SHORT);122
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static SENSOR_DEVICE_ATTR_RO(in1_min_alarm, ltc4260_bool, FAULT_UV);123
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static SENSOR_DEVICE_ATTR_RO(in1_max_alarm, ltc4260_bool, FAULT_OV);124
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static SENSOR_DEVICE_ATTR_RO(in2_alarm, ltc4260_bool,125
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FAULT_POWER_BAD | FAULT_FET_SHORT);130
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/* Current (via sense resistor) */132
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static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc4260_show_value, NULL,133
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LTC4260_SENSE);128
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static SENSOR_DEVICE_ATTR_RO(curr1_input, ltc4260_value, LTC4260_SENSE);134
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/* Overcurrent alarm */136
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static SENSOR_DEVICE_ATTR(curr1_max_alarm, S_IRUGO, ltc4260_show_bool, NULL,137
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FAULT_OC);131
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static SENSOR_DEVICE_ATTR_RO(curr1_max_alarm, ltc4260_bool, FAULT_OC);138
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static struct attribute *ltc4260_attrs[] = {140
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&sensor_dev_attr_in1_input.dev_attr.attr,141
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&sensor_dev_attr_in1_min_alarm.dev_attr.attr,142
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&sensor_dev_attr_in1_max_alarm.dev_attr.attr,143
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&sensor_dev_attr_in2_input.dev_attr.attr,144
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&sensor_dev_attr_in2_alarm.dev_attr.attr,145
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&sensor_dev_attr_curr1_input.dev_attr.attr,147
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&sensor_dev_attr_curr1_max_alarm.dev_attr.attr,