From: Li Jun <jun.li@xxxxxxx>
We only have below cases to disconnect line when suspend:
1. Device mode without connection to any host/charger(no vbus).
2. Device mode connect to a charger, usb suspend when
system is entering suspend.
This patch can fix cases, when usb phy wrongly does disconnect
line in case usb host enters suspend but vbus is off.
Fixes: 7b09e67639("usb: phy: mxs: refine mxs_phy_disconnect_line")
Signed-off-by: Li Jun <jun.li@xxxxxxx>
Signed-off-by: Igor Opaniuk <igor.opaniuk@xxxxxxxxxxx>
---
v2:
- restored original commit author
- fixed build for multi_v7
drivers/usb/phy/phy-mxs-usb.c | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index 70b8c8248caf..f58ea923c7eb 100644
--- a/drivers/usb/phy/phy-mxs-usb.c
+++ b/drivers/usb/phy/phy-mxs-usb.c
@@ -204,6 +204,7 @@ struct mxs_phy {
int port_id;
u32 tx_reg_set;
u32 tx_reg_mask;
+ enum usb_current_mode mode;
};
static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy)
@@ -386,17 +387,6 @@ static void __mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool disconnect)
usleep_range(500, 1000);
}
-static bool mxs_phy_is_otg_host(struct mxs_phy *mxs_phy)
-{
- void __iomem *base = mxs_phy->phy.io_priv;
- u32 phyctrl = readl(base + HW_USBPHY_CTRL);
-
- if (IS_ENABLED(CONFIG_USB_OTG) &&
- !(phyctrl & BM_USBPHY_CTRL_OTG_ID_VALUE))
- return true;
-
- return false;
-}
static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on)
{
@@ -412,13 +402,26 @@ static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on)
vbus_is_on = mxs_phy_get_vbus_status(mxs_phy);
- if (on && !vbus_is_on && !mxs_phy_is_otg_host(mxs_phy))
+ if (on && ((!vbus_is_on && mxs_phy->mode != USB_CURRENT_MODE_HOST)))
__mxs_phy_disconnect_line(mxs_phy, true);
else
__mxs_phy_disconnect_line(mxs_phy, false);
}
+/*
+ * Set the usb current role for phy.
+ */
+static int mxs_phy_set_mode(struct usb_phy *phy,
+ enum usb_current_mode mode)
+{
+ struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+ mxs_phy->mode = mode;
+
+ return 0;
+}
+
static int mxs_phy_init(struct usb_phy *phy)
{
int ret;
@@ -796,6 +799,7 @@ static int mxs_phy_probe(struct platform_device *pdev)
mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect;
mxs_phy->phy.type = USB_PHY_TYPE_USB2;
mxs_phy->phy.set_wakeup = mxs_phy_set_wakeup;
+ mxs_phy->phy.set_mode = mxs_phy_set_mode;
mxs_phy->phy.charger_detect = mxs_phy_charger_detect;
mxs_phy->clk = clk;
--
2.17.1
