BMC/Intel-BMC/linux.git/drivers/hwmon/pmbus, branch dev-5.3

hwmon: (pmbus/ibm-cffps) Add version detection capability

2019-11-13T07:12:28+00:00

Some systems may plug in either version 1 or version 2 of the IBM common form factor power supply. Add a version-less compatibility string that tells the driver to try and detect which version of the power supply is connected. OpenBMC-Staging-Count: 1 Signed-off-by: Eddie James Link: https://lore.kernel.org/r/1570648262-25383-3-git-send-email-eajames@linux.ibm.com Signed-off-by: Guenter Roeck Signed-off-by: Joel Stanley

hwmon: (pmbus/ibm-cffps) Fix LED blink behavior

2019-11-13T07:12:23+00:00

The LED blink_set function incorrectly did not tell the PSU LED to blink if brightness was LED_OFF. Fix this, and also correct the LED_OFF command data, which should give control of the LED back to the PSU firmware. Also prevent I2C failures from getting the driver LED state out of sync and add some dev_dbg statements. OpenBMC-Staging-Count: 1 Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20191106200106.29519-3-eajames@linux.ibm.com Fixes: ef9e1cdf419a3 ("hwmon: (pmbus/cffps) Add led class device for power supply fault led") Signed-off-by: Guenter Roeck Signed-off-by: Joel Stanley

hwmon: (pmbus/ibm-cffps) Switch LEDs to blocking brightness call

2019-11-13T07:12:17+00:00

Since i2c_smbus functions can sleep, the brightness setting function for this driver must be the blocking version to avoid scheduling while atomic. OpenBMC-Staging-Count: 1 Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20191106200106.29519-2-eajames@linux.ibm.com Fixes: ef9e1cdf419a3 ("hwmon: (pmbus/cffps) Add led class device for power supply fault led") Signed-off-by: Guenter Roeck Signed-off-by: Joel Stanley

pmbus (max31785): Wrap all I2C accessors in one-shot failure handlers

2019-09-16T03:30:01+00:00

The MAX31785(A) has shown erratic behaviour across multiple system designs, unexpectedly clock stretching and NAKing transactions. Perform a one-shot retry if necessary for all access attempts. OpenBMC-Staging-Count: 9 Signed-off-by: Andrew Jeffery Tested-by: George Keishing Signed-off-by: Joel Stanley

pmbus (core): Use driver callbacks in pmbus_get_fan_rate()

2019-09-16T03:30:01+00:00

The driver may have overridden the pmbus_read_byte_data() callback, so make sure we use that to achieve expected behaviour. This helps in the MAX31785 case where we may need to perform a one-shot retry of transfers in the face of a failure. OpenBMC-Staging-Count: 9 Signed-off-by: Andrew Jeffery Reviewed-by: Eddie James Tested-by: George Keishing Signed-off-by: Joel Stanley

pmbus (core): One-shot retries for failure to set page

2019-09-16T03:30:01+00:00

Work around the shonky behaviour seen with the MAX31785 where we fail to set the page register in some circumstances. There's no real elegant way to do this. We can propagate the error up, but that forces us to retry the operation way up the call tree in any number of places. It also forces callers to split out pmbus_set_page() from the pmbus_{read,write}_{byte,word}_data() functions in order to differentiate between a failure to set the page and a failure to read a register (that might not exist, in which case an error is anticiptated). OpenBMC-Staging-Count: 9 Cc: Eddie James Cc: Matt Spinler Signed-off-by: Andrew Jeffery Reviewed-by: Eddie James Tested-by: George Keishing Signed-off-by: Joel Stanley

pmbus (max31785): Add support for devicetree configuration

2019-09-16T03:30:01+00:00

OpenBMC-Staging-Count: 9 Signed-off-by: Andrew Jeffery Tested-by: George Keishing Signed-off-by: Joel Stanley

pmbus: (ibm-cffps) Add support for version 2 of the PSU

2019-09-16T03:30:01+00:00

Version 2 of the PSU supports a second page of data and changes the format of the FW version. Use the devicetree binding to differentiate between the version the driver should use. Signed-off-by: Eddie James Link: https://lore.kernel.org/r/1567192263-15065-4-git-send-email-eajames@linux.ibm.com Signed-off-by: Guenter Roeck (cherry picked from commit 2f8a855efe8a6faf962c53af406e5ea4791b3877) Signed-off-by: Joel Stanley

hwmon: (pmbus/adm1275) Fix power sampling support

2019-06-24T01:33:01+00:00

Not every chip supported by this driver supports setting the number of samples for power averaging. Also, the power monitoring register is not always a 16-bit register, and the configuration bits used for voltage sampling are different depending on the register width. Some conditional code is needed to fix the problem. On top of all that, the compiler complains about problems with FIELD_GET and FIELD_PREP macros if the file is built with W=1. Avoid using those macros to silence the warning. Cc: Krzysztof Adamski Cc: Alexander Sverdlin Reviewed-by: Krzysztof Adamski Signed-off-by: Guenter Roeck

hwmon: (pmbus) Add Infineon IRPS5401 driver

2019-06-24T01:33:01+00:00

Add a driver to support the Infineon IRPS5401 PMIC. This chip has 5 pages corresponding to 4 switching outputs and one linear (LDO) output. The switching and LDO outputs have slightly different supported parameters. Signed-off-by: Robert Hancock Signed-off-by: Guenter Roeck