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60b4dd1460
User layer applications can send UIC GET/SET commands via the BSG
framework, and if the user layer application sends a UIC SET command to the
PA_PWRMODE attribute, a power mode change shall be initiated in UniPro and
two interrupts shall be triggered if the power mode is successfully
changed, i.e., UIC Command Completion interrupt and UIC Power Mode
interrupt.
The current UFS BSG code calls ufshcd_send_uic_cmd() directly, with which
the second interrupt, i.e., UIC Power Mode interrupt, shall be treated as
unhandled interrupt. In addition, after the UIC command is completed, user
layer application has to poll UniPro and/or M-PHY state machine to confirm
the power mode change is finished.
Add a new wrapper function ufshcd_send_bsg_uic_cmd() and call it from
ufs_bsg_request() so that if a UIC SET command is targeting the PA_PWRMODE
attribute it can be redirected to ufshcd_uic_pwr_ctrl().
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.