Commit 644fde1c authored Nov 13, 2018 by Marek Szyprowski Committed by Greg Kroah-Hartman Dec 13, 2019

extcon: max8997: Fix lack of path setting in USB device mode



[ Upstream commit a2dc50914744eea9f83a70a5db0486be625e5dc0 ]

MAX8997 driver disables automatic path selection from MicroUSB connector
and manually sets path to either UART or USB lines. However the code for
setting USB path worked only for USB host mode (when ID pin is set
to ground). When standard USB cable (USB device mode) is connected, path
registers are not touched. This means that once the non-USB accessory is
connected to MAX8997-operated micro USB port, the path is no longer set
to USB and USB device mode doesn't work. This patch fixes it by setting
USB path both for USB and USB host modes.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 2c0ba770

drivers/extcon/extcon-max8997.c

+4 −6

Original line number	Diff line number	Diff line
		@@ -321,13 +321,11 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info,
		{
		int ret = 0;

		if (usb_type == MAX8997_USB_HOST) {
		ret = max8997_muic_set_path(info, info->path_usb, attached);
		if (ret < 0) {
		dev_err(info->dev, "failed to update muic register\n");
		return ret;
		}
		}

		switch (usb_type) {
		case MAX8997_USB_HOST: