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@ -69,11 +69,18 @@ I2C_CLIENT_INSMOD_1(max1619); |
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#define MAX1619_REG_W_TCRIT_HYST 0x13 |
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/*
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* Conversions and various macros |
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* Conversions |
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*/ |
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#define TEMP_FROM_REG(val) ((val & 0x80 ? val-0x100 : val) * 1000) |
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#define TEMP_TO_REG(val) ((val < 0 ? val+0x100*1000 : val) / 1000) |
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static int temp_from_reg(int val) |
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{ |
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return (val & 0x80 ? val-0x100 : val) * 1000; |
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} |
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static int temp_to_reg(int val) |
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{ |
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return (val < 0 ? val+0x100*1000 : val) / 1000; |
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} |
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/*
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* Functions declaration |
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@ -135,7 +142,7 @@ struct max1619_data { |
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static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct max1619_data *data = max1619_update_device(dev); \
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->value)); \
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return sprintf(buf, "%d\n", temp_from_reg(data->value)); \
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} |
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show_temp(temp_input1); |
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show_temp(temp_input2); |
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@ -153,7 +160,7 @@ static ssize_t set_##value(struct device *dev, struct device_attribute *attr, co |
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long val = simple_strtol(buf, NULL, 10); \
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\
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mutex_lock(&data->update_lock); \
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data->value = TEMP_TO_REG(val); \
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data->value = temp_to_reg(val); \
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i2c_smbus_write_byte_data(client, reg, data->value); \
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mutex_unlock(&data->update_lock); \
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return count; \
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