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Subject[PATCH v4 0/2] hwmon: (ucd9000) Add gpio and debugfs interfaces
The ucd9000 series chips have gpio pins. Add a gpio chip interface to the ucd
device so that users can query and set the state of the gpio pins.

Add a debugfs interface using the existing pmbus debugfs directory to provide
MFR_STATUS and the status of the gpi faults to users.

Changes since v3:
- remove setting of gpio_chip->owner
- format the mfr_status data
- switch to #ifdef rather than #if IS_ENABLED for debugfs

Changes since v2:
- split the gpio registration into it's own function

Changes since v1:
- dropped dev_err messages
- made gpio chip registration conditional on having gpio pins
- made mfr_status debugfs attribute more simple

Christopher Bostic (2):
hwmon: (ucd9000) Add gpio chip interface
hwmon: (ucd9000) Add debugfs attributes to provide mfr_status

drivers/hwmon/pmbus/ucd9000.c | 354 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 353 insertions(+), 1 deletion(-)


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