[v8,3/3] usb: typec: ucsi: ccg: add firmware flashing support

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Tue, Apr 16, 2019 at 10:27:47AM -0700, Ajay Gupta wrote:
> From: Ajay Gupta <ajayg@nvidia.com>
> 
> 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>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
> ---
> Changes from v7->v8
> 	- Fixed comments from Greg by dropping do_flash_show()

You still have a new sysfs file without a new Documentation/ABI/ update
for it, so I will have to reject this patch again :(

I thought I said that in the last review...

thanks,

greg k-h