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The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.
But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Simplify code and reduce code size by using the new hwmon
registration API.
Other changes:
- Convert to use regmap, and drop local caching. This avoids reading
registers unnecessarily, and uses regmap for caching of non-volatile
registers.
- Add support for temp2_max, temp2_max_alarm, temp2_max_hyst, and
temp2_offset.
- Order include files alphabetically
- Drop FSF address
- Check errors from register read and write functions and report
to userspace.
- Accept negative hysteresis values. While unlikely, a maximum limit
_can_ be set to a value smaller than 31 degrees C, which makes negative
hysteresis values possible.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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LM95235 is register compatible to LM95245.
Also update link to LM95245 data sheet, and drop the link to the
datasheet from the driver source to simplify code maintenance.
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The hysteresis register is shared among both temperature sensors.
This means changing one also affects the other. To avoid confusion,
established way to express this is to make only the first instance writable
and keep all other instances as read-only. Otherwise users may be
confused that changing the second writable value also affects the first,
while it is more obvious that a writable value may affect a different
read-only value.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
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Simplify code, reduce code size, and attach hwmon attributes
to hwmon device.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
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It doesn't provide value to get a log message whenever the driver
updates its cached data, so drop the message.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
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Hysteresis temperatures are defined as absolute temperatures,
not as delta value from the critical temperatures.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
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data is kzalloc'd, so data->valid is already 0.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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SENSORS_LIMIT and the generic clamp_val have the same functionality,
and clamp_val is more efficient.
This patch reduces text size by 9052 bytes and bss size by 11624 bytes
for x86_64 builds.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: George Joseph <george.joseph@fairview5.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
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Convert to use devm_ functions to reduce code size and simplify the code.
Cc: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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This patch converts the drivers in drivers/hwmon/* to use the
module_i2c_driver() macro which makes the code smaller and a bit simpler.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Corentin Labbe <corentin.labbe@geomatys.fr>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Steve Glendinning <steve.glendinning@smsc.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>
Cc: David George <david.george@ska.ac.za>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Cc: Marc Hulsman <m.hulsman@tudelft.nl>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
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replaced strict_strtol with kstrtol and
replaced strict_strtuol with kstrtuol
This satisfies checkpatch -f
Compile tested only: no warnings or errors given
Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
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A hwmon driver for the National Semiconductor LM95245 dual temperature
sensors chip.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
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Javier Martinez Canillas
Guenter Roeck
Jean Delvare
Axel Lin
Frans Meulenbroeks
Alexander Stein