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Commit dcdea261 authored by Henrik Rydberg's avatar Henrik Rydberg Committed by Guenter Roeck
Browse files

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: default avatarHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
parent 9792dadf

drivers/hwmon/applesmc.c

+9 −3
Original line number Diff line number Diff line
@@ -734,13 +734,19 @@ static ssize_t applesmc_show_temperature(struct device *dev, 
	entry = applesmc_get_entry_by_index(index);

	if (IS_ERR(entry))

		return PTR_ERR(entry);

	if (entry->len > 2)

		return -EINVAL;



	ret = applesmc_read_entry(entry, buffer, 2);

	ret = applesmc_read_entry(entry, buffer, entry->len);

	if (ret)

		return ret;



	if (entry->len == 2) {

		temp = buffer[0] * 1000;

		temp += (buffer[1] >> 6) * 250;

	} else {

		temp = buffer[0] * 4000;

	}



	return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp);

}