This series enables provisioning UFS devices using the existing sysfs interface. This functionality is primarily useful along the assembly line, but might also be useful for end users that receive devices that aren't locked down. Changes since v1: - Reworked the interface to show each unit of the config descriptor as a separate directory, rather than the previous method I had of a file for selecting the unit, and then a common set of files that interacted with whichever unit was selected. I did some kobject magic to accomplish this. I noticed from Greg KH's reply to Sayali's patches [1] that configfs might be the preferred method. Let me know if I should abandon this series in favor of Sayali's, with the possible exception of "Make sysfs attributes writable". - Squashed documentation changes into their respective code changes. - I decided to keep the config descriptor attributes as their own files, rather than hiding writes behind device descriptor and unit descriptor, as I think that's more future proof and true to the UFS spec. [1] https://lkml.org/lkml/2018/6/8/210 Evan Green (4): scsi: ufs: Add Configuration Descriptor to sysfs scsi: ufs: Make sysfs attributes writable scsi: ufs: Refactor descriptor read for write scsi: ufs: Enable writing config descriptor Documentation/ABI/testing/sysfs-driver-ufs | 156 ++++++++++-- drivers/scsi/ufs/ufs-sysfs.c | 367 +++++++++++++++++++++++++++-- drivers/scsi/ufs/ufs-sysfs.h | 1 + drivers/scsi/ufs/ufs.h | 29 +++ drivers/scsi/ufs/ufshcd.c | 110 ++++++--- drivers/scsi/ufs/ufshcd.h | 30 ++- 6 files changed, 620 insertions(+), 73 deletions(-) -- 2.13.5
