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path: root/drivers/hwmon/adt7475.c
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* hwmon: (adt7475) Convert to use hwmon_device_register_with_groups()Grant McEwan2019-09-031-96/+50
| | | | | | | | | | | hwmon_device_register() is a deprecated function and produces a warning. Converting the driver to use the hwmon_device_register_with_groups() instead. Signed-off-by: Grant McEwan <grant.mcewan@alliedtelesis.co.nz> Link: https://lore.kernel.org/r/20190721225530.28799-2-grant.mcewan@alliedtelesis.co.nz Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner2019-06-191-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* hwmon: (adt7475) Fix build warningGuenter Roeck2019-04-151-1/+1
| | | | | | | | | | | If CONFIG_OF is not enabled, the following build warning is observed. drivers/hwmon/adt7475.c:171:34: warning: ‘adt7475_of_match’ defined but not used Mark adt7475_of_match as __maybe_unused to fix the problem. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Use permission specific SENSOR[_DEVICE]_ATTR variantsGuenter Roeck2018-12-161-182/+126
| | | | | | | | | | | | | | | | Use SENSOR[_DEVICE]_ATTR[_2]_{RO,RW,WO} to simplify the source code, to improve readbility, and to reduce the chance of inconsistencies. Also replace any remaining S_<PERMS> in the driver with octal values. The conversion was done automatically with coccinelle. The semantic patches and the scripts used to generate this commit log are available at https://github.com/groeck/coccinelle-patches/hwmon/. This patch does not introduce functional changes. It was verified by compiling the old and new files and comparing text and data sizes. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Make adt7475_read_word() return errorsDan Carpenter2018-08-261-5/+9
| | | | | | | | | The adt7475_read_word() function was meant to return negative error codes on failure. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Potential error pointer dereferencesDan Carpenter2018-08-261-3/+8
| | | | | | | | | | | | The adt7475_update_device() function returns error pointers. The problem is that in show_pwmfreq() we dereference it before the check. And then in pwm_use_point2_pwm_at_crit_show() there isn't a check at all. I don't know if it's required, but it silences a static checker warning and it's doesn't hurt anything to check. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Change show functions to return error data correctlyTokunori Ikegami2018-08-101-2/+38
| | | | | | | | | | | Change update device function to return an error pointer if needed, and report the error to user space. Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Chris Packham <chris.packham@alliedtelesis.co.nz> [groeck: Clarified/updated description] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Change update functions to add error handlingTokunori Ikegami2018-08-101-42/+145
| | | | | | | | | | | | | I2C SMBus sometimes returns error codes. In the error case, measurement values are updated incorrectly. The sensor application then generates warning log messages and SNMP traps. To prevent this, add error handling into the update functions. Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Chris Packham <chris.packham@alliedtelesis.co.nz> [groeck: Update description] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Change valid parameter to bool typeTokunori Ikegami2018-08-101-1/+2
| | | | | | | | | | | Currently the valid variable is of type char, but it is used as boolean. So let's change it to bool. Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Chris Packham <chris.packham@alliedtelesis.co.nz> [groeck: Update description] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Split device update function to measure and limitsTokunori Ikegami2018-08-101-101/+109
| | | | | | | | | | | The update function reads both measurement and limit values. Those parts can be split so split them for a maintainability. Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Chris Packham <chris.packham@alliedtelesis.co.nz> [groeck: Clarify description] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) constify attribute_group structures.Arvind Yadav2017-08-131-8/+8
| | | | | | | | | | | | | | | | | attribute_groups are not supposed to change at runtime. All functions working with attribute_groups provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 10055 7032 0 17087 42bf drivers/hwmon/adt7475.o File size After adding 'const': text data bss dec hex filename 10567 6520 0 17087 42bf drivers/hwmon/adt7475.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) temperature smoothingChris Packham2017-06-111-0/+91
| | | | | | | | | When enabled temperature smoothing allows ramping the fan speed over a configurable period of time instead of jumping to the new speed instantaneously. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) add high frequency supportChris Packham2017-06-111-4/+5
| | | | | | | | | | Systems using 4-wire fans usually require high frequency (22.5kHz) output on the pwm. Add 22500 as a valid option in the pwmfreq_table. In high frequency mode the low-order bit are ignored so they can safely be set to 0. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) fan stall preventionChris Packham2017-06-111-0/+50
| | | | | | | | | | | By default adt7475 will stop the fans (pwm duty cycle 0%) when the temperature drops past Tmin - hysteresis. Some systems want to keep the fans moving even when the temperature drops so add new sysfs attributes that configure the enhanced acoustics min 1-3 which allows the fans to run at the minimum configure pwm duty cycle. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) replace find_nearest() with find_closest()Chris Packham2017-06-111-31/+3
| | | | | | | | | | The adt7475 has had find_nearest() since it's creation in 2009. Since then find_closest() has been introduced and several drivers have been updated to use it. Update the adt7475 to use find_closest() and remove the now unused find_nearest(). Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) set start bit in probeChris Packham2017-04-211-0/+13
| | | | | | | | | | | | The ADT7475 and ADT7476 have the STRT bit cleared by default[1]. Before any monitoring activities the STRT bit needs to be set. Logically this needs to happen before any of the sensors are read so the probe() function seems the best place for it. [1] - https://www.onsemi.com/pub/Collateral/ADT7475-D.PDF Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) Add OF device ID tableJavier Martinez Canillas2017-04-021-1/+30
| | | | | | | | | | | | | 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>
* hwmon: (adt7475) use permission-specific DEVICE_ATTR variantsJulia Lawall2017-01-021-14/+14
| | | | | | | | | | | | | | Use DEVICE_ATTR_RO for read only attributes and DEVICE_ATTR_RW for read/write attributes. This simplifies the source code, improves readbility, and reduces the chance of inconsistencies. The conversion was done automatically using coccinelle. It was validated by compiling both the old and the new source code and comparing its text, data, and bss size. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> [groeck: Updated description] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* Update Jean Delvare's e-mail addressJean Delvare2014-01-291-1/+1
| | | | Signed-off-by: Jean Delvare <khali@linux-fr.org>
* hwmon: Replace SENSORS_LIMIT with clamp_valGuenter Roeck2013-01-251-9/+9
| | | | | | | | | | | | 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>
* hwmon: Add missing inclusions of <linux/jiffies.h>Jean Delvare2012-10-101-0/+1
| | | | | | | | | | | | Many hwmon drivers use jiffies but omit the inclusion of the header file. Fix that, and also fix one driver which was including the header file but didn't need it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Luca Tettamanti <kronos.it@gmail.com> Cc: Marc Hulsman <m.hulsman@tudelft.nl> Cc: Rudolf Marek <r.marek@assembler.cz>
* hwmon: (adt7475) Convert to use devm_ functionsGuenter Roeck2012-07-211-5/+2
| | | | | | | | Convert to use devm_ functions to reduce code size and simplify the code. Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
* hwmon: convert drivers/hwmon/* to use module_i2c_driver()Axel Lin2012-03-181-12/+1
| | | | | | | | | | | | | | | | | | 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>
* hwmon: (adt7475) Fix multi-line commentsGuenter Roeck2012-03-181-32/+58
| | | | | | Cc: Jean Delvare <khali@linux-fr.org> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (adt7475) fix checkpatch issuesFrans Meulenbroeks2012-03-181-1/+1
| | | | | | | | | fixed: WARNING: static const char * array should probably be static const char * const + static const char *names[] = { Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
* hwmon: replaced strict_str* with kstr*Frans Meulenbroeks2012-01-051-10/+10
| | | | | | | | | | | 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>
* hwmon: I2C addresses are constantJean Delvare2010-10-281-1/+1
| | | | | | | | | | We can mark normal_i2c const. Almost all drivers do that already, so fix the 3 remaining ones before they are used as (bad) examples for new drivers. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: George Joseph <george.joseph@fairview5.com> Reviewed-by: Guenter Roeck <guenter.roeck@ericsson.com>
* i2c: Drop I2C_CLIENT_INSMOD_2 to 8Jean Delvare2009-12-141-1/+1
| | | | | | | | | These macros simply declare an enum, so drivers might as well declare it themselves. This puts an end to the arbitrary limit of 8 chip types per i2c driver. Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Wolfram Sang <w.sang@pengutronix.de>
* i2c: Get rid of struct i2c_client_address_dataJean Delvare2009-12-141-1/+1
| | | | | | | | | 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>
* i2c: Drop the kind parameter from detect callbacksJean Delvare2009-12-141-1/+1
| | | | | | | | 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>
* hwmon: (adt7475) Add VID support for the ADT7476Jean Delvare2009-12-091-3/+63
| | | | | | | | | | The ADT7476 has 5 dedicated pins for VID input, and the +12V input can optionally be used as a 6th VID pin. Add support for VID input. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Add support for the ADT7476Jean Delvare2009-12-091-18/+62
| | | | | | | | | | | | Add support for the Analog Devices ADT7476 chip. This chip is largely compatible with the ADT7473 and ADT7475, with additional features. In particular, it has 5 voltage inputs instead of 2, and VID input pins. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Voltage attenuators can be bypassedJean Delvare2009-12-091-6/+36
| | | | | | | | | | | | | It is possible to bypass the voltage attenuators on the +2.5V, Vccp, +5V and +12V voltage monitoring inputs. This is useful to connect other voltage channels than the ones the monitoring chip was originally designed for. When this feature is enabled, we must not include the scaling factors in our computations. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Print device information on probeJean Delvare2009-12-091-0/+18
| | | | | | | | | | Print the device name and revision at probe time, as well as a list of all optional features which are available. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Handle alternative pin functionsJean Delvare2009-12-091-15/+99
| | | | | | | | | | | | | | The TACH4 pin can be used for other functions, so fan4 may not always be available. Likewise, the PWM2 pin can be used for ALERT output, in which case pwm2 is not available For the ADT7490, the +2.5 Vin pin may also be used for other functions, in which case in0 is not available. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Move sysfs files removal to a separate functionJean Delvare2009-12-091-6/+10
| | | | | | | | | | | | Move sysfs files removal to a separate function. The code is common to the device probing error path and the standard device removal path. As it will grow with future driver development, this avoids code duplication. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Add support for the ADT7490Jean Delvare2009-12-091-12/+103
| | | | | | | | | | | Add support for the Analog Devices ADT7490 chip. This chip is largely compatible with the ADT7473 and ADT7475, with additional features. In particular, it has 6 voltage inputs instead of 2. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Improve device detectionJean Delvare2009-12-091-4/+9
| | | | | | | | | | Check the value of register 0x3f as part of the device detection, to make it more robust. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Add missing static markerJean Delvare2009-12-091-1/+1
| | | | | | | | | | adt7475_attr_group is used internally only and can thus be marked static. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Rework voltage inputs handlingJean Delvare2009-12-091-35/+48
| | | | | | | | | | | Rework the handling of voltage inputs to make it possible and easy to support more inputs. This will be needed for the upcoming ADT7490 support. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Implement pwm_use_point2_pwm_at_critJean Delvare2009-12-091-0/+42
| | | | | | | | | | | Implement the non-standard pwm_use_point2_pwm_at_crit sysfs attribute as the adt7473 driver did. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: (adt7475) Add support for the ADT7473Jean Delvare2009-12-091-8/+17
| | | | | | | | | | | | | Add support for the ADT7473 to the adt7475 driver, and mark the adt7473 driver for removal. The ADT7473 and ADT7475 chips are almost the same chip and essentially compatible, so there's no point in having separate drivers for them. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>
* hwmon: Clean up detect functionsJean Delvare2009-12-091-8/+6
| | | | | | | | | | | | As kind is now hard-coded to -1, there is room for code clean-ups. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Corentin Labbe <corentin.labbe@geomatys.fr> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Riku Voipio <riku.voipio@iki.fi> Acked-by: "Hans J. Koch" <hjk@linutronix.de> Cc: Rudolf Marek <r.marek@assembler.cz>
* hwmon: (adt7475) Fix sysfs file namesJean Delvare2009-11-161-6/+6
| | | | | | | | | The adt7475 driver creates pwm#_auto_channel_temp attributes instead of the standard pwm#_auto_channels_temp. Fix it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net>
* hwmon: (adt7475) Cache limits for 60 secondsJean Delvare2009-11-161-1/+1
| | | | | | | | | | The comment says that limits are cached for 60 seconds but the code actually caches them for only 2 seconds. Align the code on the comment, as 60 seconds makes more sense. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net>
* hwmon: (adt7475) Fix temperature fault flagsJean Delvare2009-11-161-2/+1
| | | | | | | | | | | | | The logic of temperature fault flags is wrong, it shows faults when there are none and vice versa. Fix it. I can't believe this has been broken since the driver was added, 8 months ago, basically breaking temp1 and temp3, and nobody ever complained. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net>
* hwmon: Add a driver for the ADT7475 hardware monitoring chipJordan Crouse2009-01-151-0/+1221
Hwmon driver for the ADT7475 chip. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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