Commit graph

53 commits

Author SHA1 Message Date
Linus Torvalds
fc2ce3ee10 hwmon updates for v7.2
* New drivers for the following chips
 
 - Analog Devices LTC4283 Swap Controller
 
 - Analog Devices MAX20830
 
 - Analog Devices MAX20860A
 
 - ARCTIC Fan Controller
 
 - Delta E50SN12051
 
 - Luxshare LX1308
 
 - Microchip EMC1812/13/14/15/33
 
 - Monolithic MP2985
 
 - Murata D1U74T PSU
 
 * New chip support added to existing drivers
 
 - asus-ec-sensors: Support for ROG MAXIMUS Z790 EXTREME, ROG STRIX B850-E
   GAMING WIFI, and ROG STRIX B650E-E GAMING WIFI
 
 - dell-smm: Add Dell Latitude 7530 to fan control whitelist
 
 - nct6683: Support for ASRock Z890 Pro-A
 
 - pmbus: Support for Flex BMR316, BMR321, BMR350 and BMR351
 
 - pmbus/max34440: Support for ADPM12250
 
 - pmbus/xdp720: Support for Infineon xdp730, and fix driver issues
   reported by Sashiko
 
 * New functionality
 
 - Add support for update_interval_us chip attribute, and support it
   in ina238 driver
 
 - Add support for guard() and scoped_guard() for subsystem locks,
   and use it in adt7411, ina2xx, and lm90 drivers
 
 - emc2305: Support configurable fan PWM at shutdown
 
 - lm63: Expose PWM frequency and LUT hysteresis as writable
 
 - lm75: Support active-high alert polarity
 
 - nct7802: Add time step attributes for tweaking responsiveness
 
 - pmbus/adm1266: Add rtc debugfs entries for rtc, powerup_counter,
   clear_blackbox, and firmware_revision
 
 - raspberrypi: Fix delayed-work teardown race, add voltage input support
   as well as voltage domain IDs
 
 mcp9982: Add support for reporting external diode faults
 
 * Miscellaneous bug fixes, changes and improvements
 
 - Use named initializers for platform_device_id arrays and
   i2c_device_data, and remove unused driver data
 
 - Various drivers: Move MODULE_DEVICE_TABLE next to the table itself
 
 - ads7871: Convert to hwmon_device_register_with_info(), and use
   DMA-safe buffer for SPI writes
 
 - adt7411: document supported sysfs attributes
 
 - adt7462: Add of_match_table to support devicetree
 
 - adt7475: Add explicit header include
 
 - coretemp; Fix outdated documentation, coding style issues, and
   replace hardcoded core count with dynamic value
 
 - cros_ec: Drop unused assignment of platform_device_id driver data
 
 - emc2305: Fix fan channel index handling
 
 - gpd-fan: Reject EC PWM value 0 as invalid, fix race condition between
   device removal and sysfs access, upgrade log level from warn to err for
   platform device creation failure, initialize EC before registering hwmon
   device, drop global driver data and use per-device allocation
 
 - htu31: document debugfs serial_number
 
 - ina238: Add support for samples and update_interval
 
 - it87: Clamp negative values to zero in set_fan()
 
 - lm75: Add explicit header include, Add explicit default cases in
   lm75_is_visible(), and add section for sysfs interface to documentation
 
 - pmbus/lm25066: Fix PMBus coefficients for LM5064/5066/5066i
 
 - tmp102: Use device_property_read_string API
 
 - tmp401: Read "ti,n-factor" as signed
 
 - Convert zyxel,nsa320-mcu to DT schema
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEiHPvMQj9QTOCiqgVyx8mb86fmYEFAmowFrQACgkQyx8mb86f
 mYHgww/7B620RT1wqLdMizetj/nvYx83LFfBWQTljwCJaOHpX+1Ym1gTQpItNuec
 k0OdgkhoEzlemvo4CCNl6rKwH8WYyGcDrXkS8mPDKcbaDPT9c9SSXkzbsTSeNOFc
 N+PVjy1GA3h3uVxS9eG1+BVXpY4MGnDwN1zfGBZY0XjEzxzw9YIee3qQ6AncHAjn
 6x0n3H3p0B3uZaazyC+6Po1OH3BbvI1mgVAbhYlkf8Z9QAzLggEZWCmM7WtsqQip
 Jd9wsCGq3t6q+tKWOt955DxNEMj97QEHo4LhVQ5Ezr5wQ7GTHv9k8Ygswb+wVYNB
 OUK8pCVZJ2E6IFF6m2O2jJyzscijGGT9cifnJkopvk01Z1kTGggs8W2gQwlhE10T
 ir3gT6fAUoVy/R+t2Tqj633UiBNW3OofzwwhJ9W5m2Kej64W9KFp+2R1VageaPU2
 7J96Kdc8OUipaTf11XoqUR1JtiIvOg/UMEMgGwR3ihMjW6/tEq0hBWIGiNlY50ZK
 NdricCRKN3ujWvNSQRFoQl32UWuGONhE1P0bAvitmrMKyitYsEQMMFXm7ja5xqZO
 OogVAEaakzjqtMFk7MbZpBkYHYndtaDMu2L0HytlFifCvUqiqCqjmHBKzxk6zHPs
 +j6VP62fQ5iVffu6lpn0N505vtbon19JEP8JKB5JSJDgcAHUBJA=
 =mDMd
 -----END PGP SIGNATURE-----

Merge tag 'hwmon-for-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "New drivers for the following chips:
   - Analog Devices LTC4283 Swap Controller
   - Analog Devices MAX20830
   - Analog Devices MAX20860A
   - ARCTIC Fan Controller
   - Delta E50SN12051
   - Luxshare LX1308
   - Microchip EMC1812/13/14/15/33
   - Monolithic MP2985
   - Murata D1U74T PSU

  New chip support added to existing drivers:
   - asus-ec-sensors: Support for ROG MAXIMUS Z790 EXTREME, ROG STRIX
     B850-E GAMING WIFI, and ROG STRIX B650E-E GAMING WIFI
   - dell-smm: Add Dell Latitude 7530 to fan control whitelist
   - nct6683: Support for ASRock Z890 Pro-A
   - pmbus: Support for Flex BMR316, BMR321, BMR350 and BMR351
   - pmbus/max34440: Support for ADPM12250
   - pmbus/xdp720: Support for Infineon xdp730, and fix driver issues
     reported by Sashiko

  New functionality:
   - Add support for update_interval_us chip attribute, and support it
     in ina238 driver
   - Add support for guard() and scoped_guard() for subsystem locks, and
     use it in adt7411, ina2xx, and lm90 drivers
   - emc2305: Support configurable fan PWM at shutdown
   - lm63: Expose PWM frequency and LUT hysteresis as writable
   - lm75: Support active-high alert polarity
   - nct7802: Add time step attributes for tweaking responsiveness
   - pmbus/adm1266: Add rtc debugfs entries for rtc, powerup_counter,
     clear_blackbox, and firmware_revision
   - raspberrypi: Fix delayed-work teardown race, add voltage input
     support as well as voltage domain IDs
   - mcp9982: Add support for reporting external diode faults

  Miscellaneous bug fixes, changes and improvements:
   - Use named initializers for platform_device_id arrays and
     i2c_device_data, and remove unused driver data
   - Various drivers: Move MODULE_DEVICE_TABLE next to the table itself
   - ads7871: Convert to hwmon_device_register_with_info(), and use
     DMA-safe buffer for SPI writes
   - adt7411: document supported sysfs attributes
   - adt7462: Add of_match_table to support devicetree
   - adt7475: Add explicit header include
   - coretemp; Fix outdated documentation, coding style issues, and
     replace hardcoded core count with dynamic value
   - cros_ec: Drop unused assignment of platform_device_id driver data
   - emc2305: Fix fan channel index handling
   - gpd-fan: Reject EC PWM value 0 as invalid, fix race condition
     between device removal and sysfs access, upgrade log level from
     warn to err for platform device creation failure, initialize EC
     before registering hwmon device, drop global driver data and use
     per-device allocation
   - htu31: document debugfs serial_number
   - ina238: Add support for samples and update_interval
   - it87: Clamp negative values to zero in set_fan()
   - lm75: Add explicit header include, Add explicit default cases in
     lm75_is_visible(), and add section for sysfs interface to
     documentation
   - pmbus/lm25066: Fix PMBus coefficients for LM5064/5066/5066i
   - tmp102: Use device_property_read_string API
   - tmp401: Read "ti,n-factor" as signed
   - Convert zyxel,nsa320-mcu to DT schema"

* tag 'hwmon-for-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (81 commits)
  hwmon: tmp401: Read "ti,n-factor" as signed
  hwmon: (pmbus/lm25066) Fix PMBus coefficients for LM5064/5066/5066i
  hwmon: (gpd-fan) Reject EC PWM value 0 as invalid
  hwmon: (dell-smm) Add Dell Latitude 7530 to fan control whitelist
  hwmon: temperature: add support for EMC1812
  dt-bindings: hwmon: temperature: add support for EMC1812
  hwmon: (gpd-fan): fix race condition between device removal and sysfs access
  hwmon: (gpd-fan): upgrade log level from warn to err for platform device creation failure
  hwmon: (gpd-fan): Initialize EC before registering hwmon device
  hwmon: (gpd-fan): drop global driver data and use per-device allocation
  hwmon: (pmbus/max34440): add support adpm12250
  hwmon: (ina238) Add update_interval_us attribute
  hwmon: Add update_interval_us chip attribute
  hwmon: (ina238) Add support for samples and update_interval
  gpio: gpio-ltc4283: Add support for the LTC4283 Swap Controller
  hwmon: ltc4283: Add support for the LTC4283 Swap Controller
  dt-bindings: hwmon: Document the LTC4283 Swap Controller
  hwmon: (pmbus/xdp720) Fix driver issues xdp720/730
  hwmon: (pmbus/xdp720) Add support for efuse xdp730
  dt-bindings: hwmon/pmbus: Add Infineon xdp730
  ...
2026-06-16 08:10:21 +05:30
Uwe Kleine-König (The Capable Hub)
4a9e6a9230 hwmon: Use named initializers for arrays of i2c_device_data
While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.

The mentioned robustness is relevant for a planned change to struct
i2c_device_id that replaces .driver_data by an anonymous union.

While touching all these arrays, unify indention and usage of commas.

This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/65b77bcd452752c36d866069cc5790b26d2bf8dc.1778688803.git.u.kleine-koenig@baylibre.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-06-09 08:22:59 -07:00
Daniel Lezcano
8e1529e793
thermal/of: Rename the devm_thermal_of_cooling_device_register() function
To clarify that the function operates on child nodes, rename:

          devm_thermal_of_cooling_device_register()
	                     |
			     v
       devm_thermal_of_child_cooling_device_register()

Used the command:

     	 find . -type f -name '*.[ch]' -exec \
	 sed -i 's/devm_thermal_of_cooling_device_register/\
	 devm_thermal_of_child_cooling_device_register/g' {} \;

Did not used clang-format-diff because it does not indent correctly
and checkpatch complained. Manually reindented to make checkpatch
happy

This prepares for upcoming support of cooling devices identified by
an ID rather than device tree child nodes.

No functional change.

Signed-off-by: Daniel Lezcano <daniel.lezcano@oss.qualcomm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Link: https://patch.msgid.link/20260526140802.1059293-18-daniel.lezcano@oss.qualcomm.com
2026-06-03 09:12:53 +02:00
Amay Agarwal
c9d468ba1b hwmon: (max6650) Replace sprintf() with sysfs_emit()
Replace sprintf() with sysfs_emit() when writing to sysfs buffers.

sysfs_emit() performs proper bounds checking and is the preferred
helper for sysfs output.

No functional change intended.

Signed-off-by: Amay Agarwal <tt@turingtested.xyz>
Link: https://lore.kernel.org/r/20260303152456.35763-5-tt@turingtested.xyz
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-03-30 19:45:05 -07:00
Rob Herring
5cfc392cc9 hwmon: (max6650) Use i2c_get_match_data()
Use preferred i2c_get_match_data() instead of of_match_device() and
i2c_match_id() to get the driver match data. With this, adjust the
includes to explicitly include the correct headers.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231115205703.3730448-1-robh@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-12-11 06:20:28 -08:00
Uwe Kleine-König
1975d16786 hwmon: Switch i2c drivers back to use .probe()
After commit b8a1a4cd5a ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230505131718.1210071-1-u.kleine-koenig@pengutronix.de
[groeck: Added missing change in pmbus/acbel-fsg032.c]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-06-08 06:41:17 -07:00
Krzysztof Kozlowski
1c80f98754 hwmon: max6650: constify pointers to hwmon_channel_info
Statically allocated array of pointed to hwmon_channel_info can be made
const for safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-04-19 07:08:37 -07:00
Tian Tao
f1fc688c65 hwmon: (max6650) Switch to using the new API kobj_to_dev()
Switch to using the new API kobj_to_dev() to fix the below warnning:
drivers/hwmon/max6650.c:324:60-61: WARNING opportunity for
kobj_to_dev().

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Link: https://lore.kernel.org/r/1609376621-46463-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-01-27 17:44:18 -08:00
Stephen Kitt
6748703856 hwmon: use simple i2c probe function
Many hwmon drivers don't use the id information provided by the old
i2c probe function, and the remainder can easily be adapted to the new
form ("probe_new") by calling i2c_match_id explicitly.

This avoids scanning the identifier tables during probes.

Drivers which didn't use the id are converted as-is; drivers which did
are modified as follows:

* if the information in i2c_client is sufficient, that's used instead
  (client->name);
* anything else is handled by calling i2c_match_id() with the same
  level of error-handling (if any) as before.

A few drivers aren't included in this patch because they have a
different set of maintainers. They will be covered by other patches.

Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20200813160222.1503401-1-steve@sk2.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-09-23 09:42:39 -07:00
Arnd Bergmann
3253854dc1 hwmon: (max6650) Fix unused variable warning
The newly added variable is only used in an #if block:

drivers/hwmon/max6650.c: In function 'max6650_probe':
drivers/hwmon/max6650.c:766:33: error: unused variable 'cooling_dev' [-Werror=unused-variable]

Change the #if to if() so the compiler can see what is actually
going on.

Fixes: a8463754a5a9 ("hwmon: (max6650) Use devm function to register thermal device")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
228b9e196a hwmon: (max6650) Fix minor formatting issues
CHECK: struct mutex definition without comment
CHECK: Alignment should match open parenthesis

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
0c4a71d365 hwmon: (max6650) Improve error handling in max6650_update_device
Pass errors from i2c_smbus_read_byte_data() back to the caller of
max6650_update_device().

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
62dbe50591 hwmon: (max6650) Read non-volatile registers only once
Only tachometer and alarm status registers are modified by the chip.
All other registers only need to be read only once, and reading them
repeatedly does not add any value.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
e193acb3d6 hwmon: (max6650) Convert to use devm_hwmon_device_register_with_info
Convert driver to use devm_hwmon_device_register_with_info to simplify
the code and to reduce its size.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
0d5cc9383e hwmon: (max6650) Simplify alarm handling
Instead of re-reading the alarm register after reporting an alarm,
mark cached values as invalid. While this results in always reading all
data on subsequent reads, it is quite unlikely that such reads will
actually happen before the cache times out. The upside is avoiding
unnecessary unconditional i2c read operations.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
f5b20b11bb hwmon: (max6650) Cache alarm_en register
The alarm_en register is read each time the is_visible function is called.
Since it is a configuration register, this is completely unnecessary.
Read it once and cache its value.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
bf8c9edaa5 hwmon: (max6650) Declare valid as boolean
Declare valid as boolean to match its use case.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
b9d8de4a17 hwmon: (max6650) Improve error handling in max6650_init_client
Do not overwrite errors reported from i2c functions, and don't ignore
any errors.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
b2905bb8e1 hwmon: (max6650) Introduce pwm_to_dac and dac_to_pwm
Consolidate conversion from pwm value to dac value and from dac value
to pwm value into helper functions.

While doing this, only update the cached dac value if writing it
to the chip was successful after an update. Also, put macro argument
of DIV_FROM_REG() into (), and simplify return statement of
max6650_set_cur_state().

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
8e5e7ddd38 hwmon: (max6650) Use devm function to register thermal device
Use devm_thermal_of_cooling_device_register to register the thermal
cooling device. This lets us drop the remove function.

At the same time, use 'dev' variable in probe function consistently.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Thomas Gleixner
74ba9207e1 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
Based on 1 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 as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  675 mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:45 +02:00
Guenter Roeck
212244f76d hwmon: (max6650) Drop call to thermal_cdev_update
The call to thermal_cdev_update() causes any fan connected to the chip
to stop immediately. If the thermal subsystem is not set up to actually
handle the chip as cooling device, the remains stopped until is is
restarted manually with a write to a sysfs attribute.

There is evidence that thermal_cdev_update() should only be called from
thermal governors, not from thermal cooling device drivers. Drop the call.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Tested-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-23 06:30:38 -07:00
Jean-Francois Dagenais
4f8d374b77 hwmon: (max6650) add thermal cooling device capability
This allows max6650 devices to be referenced in dts as a cooling device.

The pwm value seems duplicated in cooling_dev_state but since pwm goes
through rounding logic into data->dac, it is modified and messes with
the thermal zone state algorithms. It's also better to serve a cache
value, thus avoiding periodic actual i2c traffic.

Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-20 07:08:15 -07:00
Guenter Roeck
2720ce7e46 hwmon: (max6650) Fix build warning
If CONFIG_OF is not enabled, the following build warning is observed.

drivers/hwmon/max6650.c:137:34: warning:
	‘max6650_dt_match’ defined but not used

Mark max6650_dt_match as __maybe_unused to fix the problem.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-15 17:19:53 -07:00
Guenter Roeck
0f50b2e850 hwmon: (max6650) Use permission specific SENSOR[_DEVICE]_ATTR variants
Use SENSOR[_DEVICE]_ATTR[_2]_{RO,RW,WO} to simplify the source code,
to improve readability, 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>
2019-02-18 14:23:29 -08:00
Guenter Roeck
4400711732 hwmon: (max6650) Auto-convert to use SENSOR_DEVICE_ATTR_{RO, RW, WO}
Conversion was done done using the coccinelle script at
https://github.com/groeck/coccinelle-patches/raw/master/hwmon/sensor-devattr-w6.cocci

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-12-16 15:13:26 -08:00
Julia Lawall
1fc673769f hwmon: (max6650) use permission-specific DEVICE_ATTR variants
Use 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>
2017-01-02 10:19:45 -08:00
Mike Looijmans
20005cc58d hwmon: (max6650) Allow fan shutdown and initial rpm target
The fan can be stopped by writing "3" to pwm1_enable in sysfs.

Add devicetree property for early initialization of the fan controller
to prevent overheating, for example when resetting the board while the
fan was completely turned off.

Also improve error reporting, I2C failures were ignored while writing
new values.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-09-08 21:34:17 -07:00
Mike Looijmans
a6cdeefeca hwmon: (max6650) Add devicetree support
Parse devicetree parameters for voltage and prescaler setting. This allows
using multiple max6550 devices with varying settings, and also makes it
possible to instantiate and configure the device using devicetree.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-09-08 21:34:17 -07:00
Guenter Roeck
71ba0f315c hwmon: (max6650) Introduce local 'dev' variable
This makes the code a bit easier to read.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-03-03 08:01:06 -08:00
Guenter Roeck
0b5e33b632 hwmon: (max6650) Drop error message after memory allocation failures
The core code already generates an error message.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-03-03 08:01:05 -08:00
Guenter Roeck
17eaa25c3e hwmon: (max6650) Convert to use devm_hwmon_device_register_with_groups
Simplify code, reduce code size, and attach sensor attributes
to hwmon device.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-03-03 08:01:05 -08:00
Guenter Roeck
1577f94bce hwmon: (max6650) Rearrange code to no longer require forward declarations
Cleanup only; no functional change.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-03-03 08:01:05 -08:00
LABBE Corentin
84fb029faa hwmon: Correct some typos
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-10-18 09:12:02 -07:00
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
94cd52027a hwmon: (max6650) Convert to use devm_ functions
Convert to use devm_ functions to reduce code size and simplify the code.

Cc: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Hans J. Koch <hjk@hansjkoch.de>
2012-07-21 21:48:37 -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
Guenter Roeck
703af96040 hwmon: (max6650) Fix multi-line comments
Cc: Hans J. Koch <hjk@hansjkoch.de>
Acked-by: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18 18:26:47 -07:00
Guenter Roeck
bafda5d0f5 hwmon: (max6650) Fix checkpatch issues
Fixed:
ERROR: do not use assignment in if condition
ERROR: open brace '{' following struct go on the same line
ERROR: spaces required around that '||' (ctx:VxV)
ERROR: switch and case should be at the same indent
WARNING: simple_strtoul is obsolete, use kstrtoul instead

Cc: Hans J. Koch <hjk@hansjkoch.de>
Acked-by: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18 18:26:44 -07:00
Al Viro
587a1f1659 switch ->is_visible() to returning umode_t
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:54:55 -05:00
Jean Delvare
9c084dae5d hwmon: (max6650) Properly support the MAX6650
The MAX6650 has only one fan input.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: "Hans J. Koch" <hjk@hansjkoch.de>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-05-25 20:43:32 +02:00
Jean Delvare
67b670ff04 hwmon: (max6650) Drop device detection
MAX6650 device detection is unreliable, we got reports of false
positives. We now have many ways to let users instantiate the devices
explicitly, so unreliable detection should be dropped.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: "Hans J. Koch" <hjk@hansjkoch.de>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-05-25 20:43:32 +02:00
Hans J. Koch
2aa25c22c4 hwmon: Change mail address of Hans J. Koch
My old mail address doesn't exist anymore. This changes all occurrences
to my new address.

Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-11-15 21:38:56 +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
52df6440a2 hwmon: Clean up detect functions
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>
2009-12-09 20:35:57 +01:00
Jiri Slaby
025dc740d0 hwmon: (max6650) Fix lock imbalance
Add omitted update_lock to one switch/case in set_div.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-07-11 13:42:37 +02:00
Christian Engelmayer
52b5226f48 hwmon: (max6650) Add support for alarms
Export the alarm flags provided by the MAX6650/MAX6651 fan-speed regulator
and monitor chips via sysfs.

Signed-off-by: Christian Engelmayer <christian.engelmayer@frequentis.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-06-15 18:39:52 +02:00
Jean Delvare
0d57abd5b8 hwmon: (max6650) Convert to a new-style i2c driver
The new-style max6650 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: Hans J. Koch <hjk@linutronix.de>
2008-07-16 19:30:16 +02:00