linux-imx
Public
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committed 17c45c4d06a91
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return max1111_read(&the_max1111->spi->dev, channel);92
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}93
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EXPORT_SYMBOL(max1111_read_channel);94
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#endif95
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/*97
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* NOTE: SPI devices do not have a default 'name' attribute, which is98
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* likely to be used by hwmon applications to distinguish between99
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* different devices, explicitly add a name attribute here.100
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*/101
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static ssize_t show_name(struct device *dev,101
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static ssize_t name_show(struct device *dev,102
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struct device_attribute *attr, char *buf)103
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{104
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return sprintf(buf, "%s\n", to_spi_device(dev)->modalias);105
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}106
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static ssize_t show_adc(struct device *dev,108
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struct device_attribute *attr, char *buf)109
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{110
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struct max1111_data *data = dev_get_drvdata(dev);111
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int channel = to_sensor_dev_attr(attr)->index;118
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/*119
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* Assume the reference voltage to be 2.048V or 4.096V, with an 8-bit120
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* sample. The LSB weight is 8mV or 16mV depending on the chip type.121
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*/122
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return sprintf(buf, "%d\n", ret * data->lsb);123
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}124
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#define MAX1111_ADC_ATTR(_id) \126
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SENSOR_DEVICE_ATTR(in##_id##_input, S_IRUGO, show_adc, NULL, _id)127
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static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);128
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static DEVICE_ATTR_RO(name);129
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static MAX1111_ADC_ATTR(0);130
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static MAX1111_ADC_ATTR(1);131
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static MAX1111_ADC_ATTR(2);132
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static MAX1111_ADC_ATTR(3);133
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static MAX1111_ADC_ATTR(4);134
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static MAX1111_ADC_ATTR(5);135
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static MAX1111_ADC_ATTR(6);136
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static MAX1111_ADC_ATTR(7);137
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static struct attribute *max1111_attributes[] = {