5c9ae5a875
CCGx has two copies of the firmware in addition to the bootloader. If the device is running FW1, FW2 can be updated with the new version. Dual firmware mode allows the CCG device to stay in a PD contract and support USB PD and Type-C functionality while a firmware update is in progress. First we read the currently flashed firmware version of both primary and secondary firmware and then compare it with version of firmware file to determine if flashing is required. Command framework is added to support sending commands to CCGx controller. We wait for response after sending the command and then read the response from RAB_RESPONSE register. Below commands are supported, - ENTER_FLASHING - RESET - PDPORT_ENABLE - JUMP_TO_BOOT - FLASH_ROW_RW - VALIDATE_FW Command specific mutex lock is also added to sync between driver and user threads. PD port number information is added which is required while sending PD_PORT_ENABLE command Signed-off-by: Ajay Gupta <ajayg@nvidia.com> [ heikki: Added ABI documentation. ] Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 Restructured Text 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.