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Commit 45b0bc49 authored by Mayank Rana's avatar Mayank Rana
Browse files

usb: pd: start USB host mode with DR_SWAP when current_dr is UFP 



Commit 38e9b250 ("usb: pd: Start USB host mode functionality with
SRC_STARTUP") has removed functionality which was starting USB host
mode after finding DP capable device. This results into no USB host
mode functionality with DR_SWAP request when current_dr is UFP. Fix
this issue by starting USB host mode with super speed on receiving
DR_SWAP request when current_dr is UFP.

CRs-Fixed: 2082369
Change-Id: I47ab6d55f495c6884eb5b6bb18181aa8deaf0ac1
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent 70be28c9

drivers/usb/pd/policy_engine.c

+2 −1
Original line number Diff line number Diff line
@@ -1432,6 +1432,7 @@ static void reset_vdm_state(struct usbpd *pd) 
static void dr_swap(struct usbpd *pd)

{

	reset_vdm_state(pd);

	usbpd_dbg(&pd->dev, "dr_swap: current_dr(%d)\n", pd->current_dr);



	if (pd->current_dr == DR_DFP) {

		stop_usb_host(pd);
@@ -1439,9 +1440,9 @@ static void dr_swap(struct usbpd *pd) 
		pd->current_dr = DR_UFP;

	} else if (pd->current_dr == DR_UFP) {

		stop_usb_peripheral(pd);

		start_usb_host(pd, true);

		pd->current_dr = DR_DFP;



		/* don't start USB host until after SVDM discovery */

		usbpd_send_svdm(pd, USBPD_SID, USBPD_SVDM_DISCOVER_IDENTITY,

				SVDM_CMD_TYPE_INITIATOR, 0, NULL, 0);

	}