kernel/linux.git/drivers/hwmon/tmp421.c, branch v6.6.131

hwmon: Explicitly include correct DT includes

2023-08-21T13:04:29+00:00

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20230714174607.4057185-1-robh@kernel.org 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: move from strlcpy with unused retval to strscpy

2022-09-19T13:17:05+00:00

Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20220818210014.6769-1-wsa+renesas@sang-engineering.com Signed-off-by: Guenter Roeck

hwmon: (tmp421) Add of_node_put() before return

2021-10-18T14:23:21+00:00

Fix following coccicheck warning: ./drivers/hwmon/tmp421.c:416:1-23: WARNING: Function for_each_child_of_node should have of_node_put() before return. Early exits from for_each_child_of_node should decrement the node reference counter. Signed-off-by: Wan Jiabing Link: https://lore.kernel.org/r/20211018121538.16482-1-wanjiabing@vivo.com Signed-off-by: Guenter Roeck

hwmon: (tmp421) ignore non-channel related DT nodes

2021-10-15T22:55:58+00:00

In case the DT contains some nodes not describing the input channels, ignore them instead of exiting with error. Signed-off-by: Krzysztof Adamski Link: https://lore.kernel.org/r/8e9e332b18dc2cf545f8e8255157e408d356f916.1634206677.git.krzysztof.adamski@nokia.com Signed-off-by: Guenter Roeck

hwmon: (tmp421) support HWMON_T_ENABLE

2021-10-15T22:53:19+00:00

Since the recent patches added possibility of disabling sensor channels via DT, it only make sense to allow controlling that from userspace via HWMON_T_ENABLE mechanism. This patches adds support for that. Signed-off-by: Krzysztof Adamski Link: https://lore.kernel.org/r/a64c22e7323bd5a083f37aaaca91a745ac1beef3.1634206677.git.krzysztof.adamski@nokia.com Signed-off-by: Guenter Roeck

hwmon: (tmp421) really disable channels

2021-10-15T22:52:47+00:00

Recent patch added possibility to disable selected channels. That would only make sure that the ENODATA is returned for those channels but would not configure the actual hardware. With this patch, the config register is written to make sure the channels are disabled also at hardware level. Signed-off-by: Krzysztof Adamski Link: https://lore.kernel.org/r/d451cacdf21bf8eff38a47c055aad8c0c6e8755a.1634206677.git.krzysztof.adamski@nokia.com Signed-off-by: Guenter Roeck

hwmon: (tmp421) support specifying n-factor via DT

2021-10-15T22:49:32+00:00

Previous patches added a way to specify some channel specific parameters in DT and n-factor is definitely one of them. This calibration mechanism is board specific as its value depends on the diodes/transistors being connected to the sensor and thus the DT seems like a right fit for that information. It is very similar to the value of shunt resistor that some drivers allows specifying in DT. This patch adds a possibility to set n-factor for each channel via "n-factor" DT property in each channel subnode. Signed-off-by: Krzysztof Adamski Link: https://lore.kernel.org/r/69d0bfcc5ba27c67f21d3eabfb100656a14c75b9.1634206677.git.krzysztof.adamski@nokia.com Signed-off-by: Guenter Roeck

hwmon: (tmp421) support disabling channels from DT

2021-10-15T22:46:45+00:00

The previous patch introduced per channel subnodes in DT that let us specify some channel specific properties. This built a ground for easily disabling individual channels of the sensor that may not be connected to any external diode and thus are not returning any meaningful data. This patch adds support for parsing the "status" property of channels DT subnodes and makes sure the -ENODATA is returned when disabled channels value is read. Signed-off-by: Krzysztof Adamski Link: https://lore.kernel.org/r/a85d623f0792b862870933a875bdf802f4c017f1.1634206677.git.krzysztof.adamski@nokia.com Signed-off-by: Guenter Roeck

hwmon: (tmp421) add support for defining labels from DT

2021-10-15T22:44:21+00:00

tmp42x is a multichannel temperature sensor with several external channels. Since those channels can be used to connect diodes placed anywhere in the system, their meaning will vary depending on the project. For this case, the hwmon framework has an idea of labels which allows us to assign the meaning to each channel. The similar concept is already implemented in ina3221 - the label for each channel can be defined via device tree. See commit a9e9dd9c6de5 ("hwmon: (ina3221) Read channel input source info from DT") This patch adds support for similar feature to tmp421. Signed-off-by: Krzysztof Adamski Link: https://lore.kernel.org/r/dab0fda6ac0e8d7f163c3762a7fb1e595a4d8159.1634206677.git.krzysztof.adamski@nokia.com Signed-off-by: Guenter Roeck