linux-toradex.git/drivers/hwmon/jc42.c, branch v7.0-rc2

hwmon: (jc42) Rely on subsystem locking

2025-10-15T18:02:43+00:00

Attribute access is now serialized in the hardware monitoring core,
so locking in the driver code is no longer necessary. Drop it.

Signed-off-by: Guenter Roeck

hwmon: (jc42) Drop of_match_ptr() protection

2024-11-12T21:54:55+00:00

This prevents use of this driver with ACPI via PRP0001 and
is an example of an anti pattern I'm trying to remove from
the kernel. Hence drop from this driver.

Also switch of.h for mod_devicetable.h include given use of
struct of_device_id which is defined in that header.

Reported-by: Konstantin Aladyshev 
Closes: https://lore.kernel.org/r/CACSj6VW7WKv5tiAkLCvSujENJvXq1Mc7_7vtkQsRSz3JGY0i3Q@mail.gmail.com
Signed-off-by: Andy Shevchenko 
Message-ID: <20241108124348.1392473-1-andriy.shevchenko@linux.intel.com>
Signed-off-by: Guenter Roeck

[PATCH} hwmon: (jc42) Properly detect TSE2004-compliant devices again

2024-10-15T02:14:08+00:00

Commit b3e992f69c23 ("hwmon: (jc42)  Strengthen detect function")
attempted to make the detect function more robust for
TSE2004-compliant devices by checking capability bits which, according
to the JEDEC 21-C specification, should always be set. Unfortunately,
not all real-world implementations fully adhere to this specification,
so this change caused a regression.

Stop testing bit 7 (EVSD) of the Capabilities register, as it was
found to be 0 on one real-world device.

Also stop testing bits 0 (EVENT) and 2 (RANGE) as vendor datasheets
(Renesas TSE2004GB2B0, ST STTS2004) suggest that they may not always
be set either.

Signed-off-by: Jean Delvare 
Message-ID: <20241014141204.026f4641@endymion.delvare>
Fixes: b3e992f69c23 ("hwmon: (jc42)  Strengthen detect function")
Message-ID: <20241014220426.0c8f4d9c@endymion.delvare>
Signed-off-by: Guenter Roeck

hwmon: (jc42) Strengthen detect function

2024-06-30T20:15:26+00:00

Configuration register bit 5 must read 0 for all JC42.4 compliant chips.
Several capability register bits must be set for all TSE2004 compliant
chips. Use that information to strengthen the detect function.

Signed-off-by: Guenter Roeck

hwmon: (jc42) Use common device ID for TSE2004av compliant sensors

2024-06-30T20:15:23+00:00

TSE2004av standardizes the device ID of compliant temperature sensors to
be 0x22xx, where xx is the device revision. Use a single define for all
TSE2004av compliant temperature sensors, and relax the device id mask to
match the upper 8 bit of the device id register.

Signed-off-by: Guenter Roeck

hwmon: Drop explicit initialization of struct i2c_device_id::driver_data to 0

2024-05-01T14:47:49+00:00

These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20240430085654.1028864-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Guenter Roeck

hwmon: (jc42) Remove I2C_CLASS_SPD support

2024-04-28T17:08:33+00:00

Last host driver supporting I2C_CLASS_SPD was i801. Now that I2C_CLASS_SPD
support has been removed there, we can remove it here too.

Signed-off-by: Heiner Kallweit 
Link: https://lore.kernel.org/r/3c4a1715-bfbb-4ae2-b35f-2f20f95e4932@gmail.com
Signed-off-by: Guenter Roeck

hwmon: (jc42) convert to use maple tree register cache

2024-02-25T20:37:36+00:00

The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache.

Signed-off-by: Bo Liu 
Link: https://lore.kernel.org/r/20240202071628.40990-1-liubo03@inspur.com
Signed-off-by: Guenter Roeck

hwmon: Switch i2c drivers back to use .probe()

2023-06-08T13:41:17+00:00

After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("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 
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

hwmon: jc42: constify pointers to hwmon_channel_info

2023-04-19T14:08:35+00:00

Statically allocated array of pointed to hwmon_channel_info can be made
const for safety.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Guenter Roeck