UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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

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>
This commit is contained in:
Marek Szyprowski 2018-11-13 16:38:47 +01:00 committed by Chanwoo Choi
parent 3e34c81989
commit a2dc509147
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/extcon/extcon-max8997.c
View File

@ -311,12 +311,10 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info,
{ {
int ret = 0; int ret = 0;
if (usb_type == MAX8997_USB_HOST) { ret = max8997_muic_set_path(info, info->path_usb, attached);
ret = max8997_muic_set_path(info, info->path_usb, attached); if (ret < 0) {
if (ret < 0) { dev_err(info->dev, "failed to update muic register\n");
dev_err(info->dev, "failed to update muic register\n"); return ret;
return ret;
}
} }
switch (usb_type) { switch (usb_type) {