kernel.git/drivers/hwmon/lm75.c, branch linux-5.5.y

hwmon: (lm75) Aproximate sample times to data-sheet values

2019-09-04T18:06:47Z

Current sample time values are over estimated, this patches applies values closer to the ones defined in the data-sheets. Signed-off-by: Iker Perez del Palomar Sustatxa [groeck: resolved conflicts; use default conversion times] Signed-off-by: Guenter Roeck

hwmon: (lm75) Add support for writing sampling period on PCT2075

2019-09-03T19:47:17Z

For PCT7027, the sampling period is configured using a dedicated register. Signed-off-by: Guenter Roeck

hwmon: (lm75) Add support for writing conversion time for TMP112

2019-09-03T19:47:17Z

TMP112 uses an uncommon method to write the conversion time: its configuration register is 16 bit wide, and the conversion time is configured in its second byte. Signed-off-by: Guenter Roeck

hwmon: (lm75) Move updating the sample interval to its own function

2019-09-03T19:47:17Z

We'll need per-chip handling for updating the sample interval. To prepare for it, separate the code implementing it into its own function. Signed-off-by: Guenter Roeck

hwmon: (lm75) Support configuring the sample time for various chips

2019-09-03T19:47:17Z

The conversion (sample) time is configurable for several chips supported by the lm75 driver. With the necessary infrastructure in place, enable this support for all chips using the configuration register for this purpose. DS1775: Conversion time: 187.5, 375, 750, 1500 ms Sensor resolution: 9, 10, 11, 12 bit DS75, STDS75: Conversion time: 150, 300, 600, 1200 ms Sensor resolution: 9, 10, 11, 12 bit DS7505: Conversion time: 25, 50, 100, 200 ms Sensor resolution: 9, 10, 11, 12 bit MCP980[0123]: Conversion time: 75, 150, 300, 600 ms Sensor resolution: 9, 10, 11, 12 bit TMP100, TMP101: Conversion time: 75, 150, 300, 600 ms Sensor resolution: 9, 10, 11, 12 bit TMP75, TMP105, TMP175, TMP275: Conversion time: 38, 75, 150, 300 ms Sensor resolution: 9, 10, 11, 12 bit While doing this, it became obvious that the masks and values to set the converion (sample) time is similar for all those chips, and that other chips with configurable sample times will need separate code anyway. For that reason, replace the sample_set_masks and sample_clr_mask configuration parameters with a single array and with a constant. Signed-off-by: Guenter Roeck

hwmon: (lm75) Modularize lm75_write and make hwmon_chip writable

2019-09-03T19:47:17Z

* Create two separate functions to write into hwmon_temp and hwmon_chip. * Call the functions from lm75_write. * Make hwm_chip writable if the chip supports more than one sample time. Signed-off-by: Iker Perez del Palomar Sustatxa Link: https://lore.kernel.org/r/20190808080246.8371-5-iker.perez@codethink.co.uk Signed-off-by: Guenter Roeck

hwmon: (lm75) Add new fields into lm75_params_

2019-09-03T19:47:17Z

The new fields are included to prepare the driver for next patch. The fields are: * *resolutions: Stores all the supported resolutions by the device. * num_sample_times: Stores the number of possible sample times. * *sample_times: Stores all the possible sample times to be set. * sample_set_masks: The set_masks for the possible sample times * sample_clr_mask: Clear mask to set the default sample time. Signed-off-by: Iker Perez del Palomar Sustatxa Link: https://lore.kernel.org/r/20190808080246.8371-4-iker.perez@codethink.co.uk [groeck: Minor structure documentation fixes] Signed-off-by: Guenter Roeck

hwmon: (lm75) Create function from code to write into registers

2019-09-03T19:47:17Z

Wrap the existing code to write configurations into registers in a function. Added error handling to the function. Signed-off-by: Iker Perez del Palomar Sustatxa Link: https://lore.kernel.org/r/20190808080246.8371-3-iker.perez@codethink.co.uk Signed-off-by: Guenter Roeck

hwmon: (lm75) Create structure to save all the configuration parameters.

2019-09-03T19:47:17Z

* Add to lm75_data kind field to store the kind of device the driver is working with. * Add an structure to store the configuration parameters of all the supported devices. * Delete resolution_limits from lm75_data and include them in the structure described above. * Add a pointer to the configuration parameters structure to be used as a reference to obtain the parameters. * Delete switch-case approach to get the device configuration parameters. * The structure is cleaner and easier to maintain. Signed-off-by: Iker Perez del Palomar Sustatxa Link: https://lore.kernel.org/r/20190808080246.8371-2-iker.perez@codethink.co.uk Signed-off-by: Guenter Roeck

hwmon: (lm75) add support for PCT2075

2019-09-03T19:47:17Z

The NXP PCT2075 is largely compatible with other chips already supported by the LM75 driver. It uses an 11-bit resolution and defaults to 100 ms sampling period. The datasheet is here: https://www.nxp.com/docs/en/data-sheet/PCT2075.pdf Signed-off-by: Daniel Mack Link: https://lore.kernel.org/r/20190711124504.7580-2-daniel@zonque.org [groeck: Documentation update] Signed-off-by: Guenter Roeck