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Commit 9b1743cb authored by Linyu Yuan's avatar Linyu Yuan
Browse files

usb: misc: nb7vpq904m: disable chip when boot up without cable 



When boot up without USB cable, first UCSI_GET_CONNECTOR_STATUS command
will return all zero message,

Example UCSI IPC log:
40.319381997:   sync_write: CONTROL: 12 00 01 00 00 00 00 00
40.319507987:   read: CCI: 00 09 00 80
40.319620018:   read: MSG_IN: 00 00 00 00 00 00 00 00 00

Disable chip when connect status not set.

Change-Id: I6c91e462b10a8fc6798d95148be799706861ab46
Signed-off-by: default avatarLinyu Yuan <linyyuan@codeaurora.org>
parent b5c362f0

drivers/usb/misc/ssusb-redriver-nb7vpq904m.c

+13 −10
Original line number Diff line number Diff line
@@ -458,13 +458,17 @@ static int ssusb_redriver_ucsi_notifier(struct notifier_block *nb, 
	if (info->connect && !info->partner_change)

		return NOTIFY_DONE;



	if (!info->connect) {

		if (info->partner_usb || info->partner_alternate_mode)

			dev_err(redriver->dev, "set partner when no connection\n");

		op_mode = OP_MODE_NONE;

	} else if (info->partner_usb && info->partner_alternate_mode) {

		/*

		 * when connect a DP only cable,

		 * ucsi set usb flag first, then set usb and alternate mode

		 * after dp start link training.

		 * it should only set alternate_mode flag ???

		 */

	if (info->partner_usb && info->partner_alternate_mode) {

		if (redriver->op_mode == OP_MODE_DP)

			return NOTIFY_OK;

		op_mode = OP_MODE_USB_AND_DP;
@@ -472,10 +476,9 @@ static int ssusb_redriver_ucsi_notifier(struct notifier_block *nb, 
		if (redriver->op_mode == OP_MODE_DP)

			return NOTIFY_OK;

		op_mode = OP_MODE_USB;

	}

	else if (info->partner_alternate_mode)

	} else if (info->partner_alternate_mode) {

		op_mode = OP_MODE_DP;

	else

	} else

		op_mode = OP_MODE_NONE;



	if (redriver->op_mode == op_mode)