hwmon: (applesmc) Handle new temperature format
The recent Macbooks have temperature registers of a new type. This patch adds the logic to handle them. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
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@ -734,13 +734,19 @@ static ssize_t applesmc_show_temperature(struct device *dev,
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entry = applesmc_get_entry_by_index(index);
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if (IS_ERR(entry))
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return PTR_ERR(entry);
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if (entry->len > 2)
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return -EINVAL;
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ret = applesmc_read_entry(entry, buffer, 2);
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ret = applesmc_read_entry(entry, buffer, entry->len);
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if (ret)
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return ret;
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temp = buffer[0]*1000;
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temp += (buffer[1] >> 6) * 250;
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if (entry->len == 2) {
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temp = buffer[0] * 1000;
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temp += (buffer[1] >> 6) * 250;
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} else {
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temp = buffer[0] * 4000;
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}
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return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp);
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}
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