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Abdurrahman Hussain
828cd614e2
pmbus_data2reg_vid() hardcoded the VR11 encoding regardless of the vrm_version configured by the driver, while pmbus_reg2data_vid() already switched on it. Any driver that selects a non-VR11 VID mode and exposes a regulator (or hwmon vout setter) sent dangerously wrong codes to PMBUS_VOUT_COMMAND -- e.g. an nvidia195mv part asked for 200 mV got the VR11 clamp to 500 mV encoded as 0xB2, which the chip interprets as 1080 mV. Mirror pmbus_reg2data_vid() so writes round-trip with reads. Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai> Assisted-by: Claude:claude-opus-4-7 [Claude Code] Link: https://lore.kernel.org/r/20260620-pmbus-data2reg-vid-v1-1-5518030432c4@nexthop.ai Fixes:068c227056("hwmon: (pmbus) Add support for VR12") Fixes:d4977c083a("hwmon: (pmbus) Add support for Intel VID protocol VR13") Fixes:9d72340b6a("hwmon: (pmbus/core) Add support for Intel IMVP9 and AMD 6.25mV modes") Fixes:969a4ec86c("hwmon: (pmbus/core) Add support for NVIDIA nvidia195mv mode") Signed-off-by: Guenter Roeck <linux@roeck-us.net>