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authorHans de Goede <hdegoede@redhat.com>2016-12-19 03:13:11 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2017-01-09 04:04:10 +0300
commit5757aca10146061befd168dab37fb0db1ccd8f73 (patch)
tree086cc60820669def54472a655d23b491cea890ea /drivers/extcon/extcon-axp288.c
parent5d2199ea340d158587b09e2ab95908c210fd4742 (diff)
downloadlinux-5757aca10146061befd168dab37fb0db1ccd8f73.tar.xz
extcon: axp288: Use vbus-valid instead of -present to determine cable presence
The vbus-present bit in the power status register also gets set to 1 when a usb-host cable (id-pin shorted to ground) is plugged in and a 5v boost converter is supplying 5v to the otg usb bus. This causes a "disconnect or unknown or ID event" warning in dmesg as well as the extcon device to report the last detected charger cable type as being connected even though none is connected. This commit switches to checking the vbus-valid bit instead, which is only 1 when both vbus is present and the vbus-path is enabled in the vbus-path control register (the vbus-path gets disabled when a usb-host cable is detected, to avoid the pmic drawing power from the 5v boost converter). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/extcon/extcon-axp288.c')
-rw-r--r--drivers/extcon/extcon-axp288.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c
index 98289a266810..f8a326a005ec 100644
--- a/drivers/extcon/extcon-axp288.c
+++ b/drivers/extcon/extcon-axp288.c
@@ -166,7 +166,7 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
return ret;
}
- vbus_attach = (pwr_stat & PS_STAT_VBUS_PRESENT);
+ vbus_attach = (pwr_stat & PS_STAT_VBUS_VALID);
if (!vbus_attach)
goto no_vbus;