Hi,

On Mon, Dec 28, 2020 at 07:37:11PM +0530, Shah, Nehal-bakulchandra wrote:

On 11/26/2020 9:48 PM, Shah, Nehal-bakulchandra wrote:

quoted

On 11/26/2020 5:47 PM, Heikki Krogerus wrote:

quoted

On Wed, Nov 25, 2020 at 08:51:24PM +0530, Shah, Nehal-bakulchandra wrote:

quoted

Hi Heikki,

I am working on the project with PD controller as TPS6598x. The current
implementation of TPS6598x does not invoke display alt mode driver .

Can you help me to understand how to achieve this?

You should be able to get an idea how to achieve that for example by
checking how we did it for UCSI: drivers/usb/typec/ucsi/displayport.c

I think you should start by first only registering the alternate mode
without any control. That way you should not need to deal with
anything else except the DP SID Status register.

After that we can add control as the next step.

If you need more help, let me know.

Br,

Thanks for the input. I will have a look.

regards

Nehal

I am not able to understand who will trigger ucsi_displayport_exit ? for enter
mode , i understood it goes through vdm statemachine. But how exit is getting
triggered?.

ucsi_displayport_exit() ends up being called when the displayport
altmode driver (drivers/usb/typec/altmodes/displayport.c) executes
typec_altmode_exit().

Br,

-- 
heikki