Commit graph

34 commits

Author SHA1 Message Date
Axel Lin
99765db299 hwmon: (lm77) Prevent overflow problem when writing large limits
On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip.
Clamp the input values to the supported limits first to fix the problem.

For set_temp_hyst:
As Guenter pointed out that the temperature is read as unsigned and stored in
an unsigned long. This is wrong; nothing in the datasheet suggests that the
value (the absolute temperature) must be positive.
So change it to signed.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-07-31 09:41:46 -07:00
Guenter Roeck
5975dfbf40 hwmon: (lm77) Convert to use devm_hwmon_device_register_with_groups
Use devm_hwmon_device_register_with_groups API to attach attributes
to hwmon device, simplify code, and reduce code size.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-05-21 16:02:21 -07:00
Guenter Roeck
48dbd6ff14 hwmon: (lm77) Drop function macros
Function macros make the code harder to read and increase code size,
so drop them.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-05-21 16:02:20 -07:00
Guenter Roeck
50bf46509f hwmon: (lm77) Do not preserve hysteresis when updating critical temp limit
Updating the hysteresis value when updating the critical temperature limit
was following the rule of 'least surprise'. However, it had the undesirable
side effect of changing the hysteresis for all other attributes, which
defeats the purpose of least surprise. In addition, it could result in
invalid hysteresis values if the resulting hysteresis was too large. In such
cases the resulting hysteresis ended up changed anyway, which again defeats
the purpose. So drop that code and document the new behavior.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-05-21 16:02:20 -07:00
Guenter Roeck
9f9edcd4c3 hwmon: (lm77) Rearrange code to no longer require forward declarations
Forward declarations are easy to avoid and unnecessary.
Rearrange code to avoid it.

No functional change.

Acked-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-05-21 16:02:20 -07:00
Guenter Roeck
d9ee59751e hwmon: (lm77) Drop FSF mailing address
The FSF mailing address changes over time, so drop it.

No functional change.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-05-21 16:02:20 -07:00
Jean Delvare
6cf0a91ebe hwmon: Avoid initializing the same field twice
All hwmon drivers allocate their data structure with some form of
kzalloc, so setting data fields to zero explicitly is a waste of time.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
2014-04-04 18:01:34 +02:00
Guenter Roeck
2a844c148e hwmon: Replace SENSORS_LIMIT with clamp_val
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>
2013-01-25 21:03:54 -08:00
Guenter Roeck
52714c04df hwmon: (lm77) Convert to use devm_ functions
Convert to use devm_ functions to reduce code size and simplify the code.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
2012-07-21 21:48:40 -07:00
Guenter Roeck
efd2d117ae hwmon: (lm77) Improve code readability
Rename new_client variable, and define new variable for client->dev.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
2012-07-21 21:48:40 -07:00
Guenter Roeck
02fe2fd949 hwmon: (lm77) Fix checkpatch issues
Fixed:
ERROR: code indent should use tabs where possible
ERROR: do not use assignment in if condition
ERROR: trailing whitespace
WARNING: line over 80 characters
WARNING: please, no space before tabs
WARNING: simple_strtol is obsolete, use kstrtol instead
WARNING: simple_strtoul is obsolete, use kstrtoul instead

Modify multi-line comments to follow Documentation/CodingStyle.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18 18:27:24 -07:00
Axel Lin
f0967eea80 hwmon: convert drivers/hwmon/* to use module_i2c_driver()
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>
2012-03-18 18:26:50 -07:00
Jean Delvare
90f4102ce5 hwmon: Use i2c_smbus_{read,write}_word_swapped
Make use of the new i2c_smbus_{read,write}_word_swapped functions.
This makes the driver code more compact and readable. It also ensures
proper error handling.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>
2011-11-04 12:00:47 +01:00
Jean Delvare
1f86df49dd i2c: Drop I2C_CLIENT_INSMOD_1
This macro simply declares an enum, so drivers might as well declare
it themselves.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:26 +01:00
Jean Delvare
c3813d6af1 i2c: Get rid of struct i2c_client_address_data
Struct i2c_client_address_data only contains one field at this point,
which makes its usefulness questionable. Get rid of it and pass simple
address lists around instead.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:25 +01:00
Jean Delvare
310ec79210 i2c: Drop the kind parameter from detect callbacks
The "kind" parameter always has value -1, and nobody is using it any
longer, so we can remove it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:23 +01:00
Jean Delvare
747d9bedc3 hwmon: (lm77) Clean up detect function
As kind is now hard-coded to -1, there is room for code clean-ups.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-12-09 20:35:52 +01:00
Jean Delvare
a189dd62d3 hwmon: (lm77) Convert to a new-style i2c driver
The new-style lm77 driver implements the optional detect() callback
to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Andras Bali <drewie@freemail.hu>
2008-07-16 19:30:13 +02:00
Mark M. Hoffman
25e9c86d5a hwmon: normal_i2c arrays should be const
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-18 21:58:15 -05:00
Jean Delvare
1f52af0f69 hwmon: (lm77) Add individual alarm files
The new libsensors needs this. As the old library never had support for
the lm77 driver, I even dropped the legacy "alarms" file.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-07 20:39:44 -05:00
Tony Jones
1beeffe433 hwmon: Convert from class_device to device
Convert from class_device to device for hwmon_device_register/unregister

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:30 -04:00
Christian Hohnstaedt
5bfedac045 hwmon: Allow writing of negative trigger temperatures
- replace differing temperature variable types by long
- use strtol() instead of strtoul() for conversion

Signed-off-by: Christian Hohnstaedt <chohnstaedt@innominate.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:29 -04:00
Mark M. Hoffman
0501a3816e hwmon: Fix unchecked return status, batch 2
hwmon: Fix unchecked return status, batch 2

Fix up some hwmon drivers so that they no longer ignore return status
from device_create_file().

Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28 15:31:17 -07:00
Ingo Molnar
9a61bf6300 [PATCH] hwmon: Semaphore to mutex conversions
convert drivers/hwmon/*.c semaphore use to mutexes.

the conversion was generated via scripts, and the result was validated
automatically via a script as well.

all affected hwmon drivers were build-tested.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-23 14:21:52 -08:00
Jean Delvare
413b645150 [PATCH] hwmon: Fix negative temperature readings in lm77 driver
Fix negative temperature readings in lm77 driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Michael Renzmann <mrenzmann@otaku42.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-06 12:02:14 -08:00
Greg Kroah-Hartman
2b48716d1d [PATCH] I2C: Remove .owner setting from i2c_driver as it's no longer needed
Now that i2c_add_driver() doesn't need the module owner to be set by
hand, we can delete it from the drivers.  This patch catches all of the
drivers that I found in the current tree (if a driver sets the .owner by
hand, it's not a problem, just not needed.)

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Jean Delvare <khali@linux-fr.org>
2006-01-05 22:16:25 -08:00
Laurent Riffard
cdaf79349c [PATCH] i2c: Drop i2c_driver.{owner,name}, 3 of 11
We should use the i2c_driver.driver's .name and .owner fields
instead of the i2c_driver's ones.

This patch updates the hwmon drivers.

Signed-off-by: Laurent Riffard <laurent.riffard@free.fr>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05 22:16:23 -08:00
Jean Delvare
8a9947552d [PATCH] i2c: Drop i2c_driver.flags, 2 of 3
Just about every i2c chip driver sets the I2C_DF_NOTIFY flag, so we
can simply make it the default and drop the flag. If any driver really
doesn't want to be notified when i2c adapters are added, that driver
can simply omit to set .attach_adapter. This approach is also more
robust as it prevents accidental NULL pointer dereferences.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05 22:16:21 -08:00
Deepak Saxena
ba9c2e8d15 [PATCH] hwmon: kzalloc conversion
Use kzalloc instead of kmalloc+memset in all hardware monitoring
drivers.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 14:02:12 -07:00
Jean Delvare
f4b5026120 [PATCH] hwmon: hwmon vs i2c, second round (06/11)
The only thing left in i2c-sensor.h are module parameter definition
macros. It's only an extension of what i2c.h offers, and this extension
is not sensors-specific. As a matter of fact, a few non-sensors drivers
use them. So we better merge them in i2c.h, and get rid of i2c-sensor.h
altogether.

Signed-off-by: Jean Delvare <khali@linux-fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05 09:14:21 -07:00
Jean Delvare
2ed2dc3c11 [PATCH] hwmon: hwmon vs i2c, second round (04/11)
i2c_probe and i2c_detect now do the exact same thing and operate on
the same data structure, so we can have everyone call i2c_probe.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05 09:14:20 -07:00
Jean Delvare
5071860aba [PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (7/9)
Kill normal_isa in header files, documentation and all chip drivers, as
it is no more used.

normal_i2c could be renamed to normal, but I decided not to do so at the
moment, so as to limit the number of changes. This might be done later
as part of the i2c_probe/i2c_detect merge.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05 09:14:12 -07:00
Mark M. Hoffman
943b0830ce [PATCH] I2C hwmon: add hwmon sysfs class to drivers
This patch modifies sensors chip drivers to make use of the new
sysfs class "hwmon".

Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05 09:14:08 -07:00
Jean Delvare
8d5d45fb14 [PATCH] I2C: Move hwmon drivers (2/3)
Part 2: Move the driver files themselves.

Note that the patch "adds trailing whitespace", because it does move the
files as-is, and some files happen to have trailing whitespace.

From: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-11 14:42:50 -07:00
Renamed from drivers/i2c/chips/lm77.c (Browse further)