usb: mtu3: add support for usb3.1 IP

Support SuperSpeedPlus for usb3.1 device IP

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

5 files changed, 23 insertions, 12 deletions

diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h
index b0c2b5dca045..d80e4e813248 100644
--- a/drivers/usb/mtu3/mtu3.h
+++ b/drivers/usb/mtu3/mtu3.h
@@ -94,6 +94,7 @@ enum mtu3_speed {
         MTU3_SPEED_FULL = 1,
         MTU3_SPEED_HIGH = 3,
         MTU3_SPEED_SUPER = 4,
+        MTU3_SPEED_SUPER_PLUS = 5,
 };
 
 /**
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index cd4528f5f337..67f7a309aba7 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c
@@ -237,7 +237,7 @@ void mtu3_ep_stall_set(struct mtu3_ep *mep, bool set)
 
 void mtu3_dev_on_off(struct mtu3 *mtu, int is_on)
 {
-        if (mtu->is_u3_ip && (mtu->max_speed == USB_SPEED_SUPER))
+        if (mtu->is_u3_ip && mtu->max_speed >= USB_SPEED_SUPER)
                 mtu3_ss_func_set(mtu, is_on);
         else
                 mtu3_hs_softconn_set(mtu, is_on);
@@ -547,6 +547,9 @@ static void mtu3_set_speed(struct mtu3 *mtu)
                 mtu3_clrbits(mbase, U3D_USB3_CONFIG, USB3_EN);
                 /* HS/FS detected by HW */
                 mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE);
+        } else if (mtu->max_speed == USB_SPEED_SUPER) {
+                mtu3_clrbits(mtu->ippc_base, SSUSB_U3_CTRL(0),
+                             SSUSB_U3_PORT_SSP_SPEED);
         }
 
         dev_info(mtu->dev, "max_speed: %s\n",
@@ -624,6 +627,10 @@ static irqreturn_t mtu3_link_isr(struct mtu3 *mtu)
                 udev_speed = USB_SPEED_SUPER;
                 maxpkt = 512;
                 break;
+        case MTU3_SPEED_SUPER_PLUS:
+                udev_speed = USB_SPEED_SUPER_PLUS;
+                maxpkt = 512;
+                break;
         default:
                 udev_speed = USB_SPEED_UNKNOWN;
                 break;
@@ -825,14 +832,15 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb)
         case USB_SPEED_FULL:
         case USB_SPEED_HIGH:
         case USB_SPEED_SUPER:
+        case USB_SPEED_SUPER_PLUS:
                 break;
         default:
                 dev_err(dev, "invalid max_speed: %s\n",
                         usb_speed_string(mtu->max_speed));
                 /* fall through */
         case USB_SPEED_UNKNOWN:
-                /* default as SS */
-                mtu->max_speed = USB_SPEED_SUPER;
+                /* default as SSP */
+                mtu->max_speed = USB_SPEED_SUPER_PLUS;
                 break;
         }
 
diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c
index 434fca58143c..b495471f689f 100644
--- a/drivers/usb/mtu3/mtu3_gadget.c
+++ b/drivers/usb/mtu3/mtu3_gadget.c
@@ -89,6 +89,7 @@ static int mtu3_ep_enable(struct mtu3_ep *mep)
 
         switch (mtu->g.speed) {
         case USB_SPEED_SUPER:
+        case USB_SPEED_SUPER_PLUS:
                 if (usb_endpoint_xfer_int(desc) ||
                                 usb_endpoint_xfer_isoc(desc)) {
                         interval = desc->bInterval;
@@ -456,7 +457,7 @@ static int mtu3_gadget_wakeup(struct usb_gadget *gadget)
                 return  -EOPNOTSUPP;
 
         spin_lock_irqsave(&mtu->lock, flags);
-        if (mtu->g.speed == USB_SPEED_SUPER) {
+        if (mtu->g.speed >= USB_SPEED_SUPER) {
                 mtu3_setbits(mtu->mac_base, U3D_LINK_POWER_CONTROL, UX_EXIT);
         } else {
                 mtu3_setbits(mtu->mac_base, U3D_POWER_MANAGEMENT, RESUME);
diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c
index 958d74dd2b78..020b25314a68 100644
--- a/drivers/usb/mtu3/mtu3_gadget_ep0.c
+++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c
@@ -212,8 +212,8 @@ ep0_get_status(struct mtu3 *mtu, const struct usb_ctrlrequest *setup)
         case USB_RECIP_DEVICE:
                 result[0] = mtu->is_self_powered << USB_DEVICE_SELF_POWERED;
                 result[0] |= mtu->may_wakeup << USB_DEVICE_REMOTE_WAKEUP;
-                /* superspeed only */
-                if (mtu->g.speed == USB_SPEED_SUPER) {
+
+                if (mtu->g.speed >= USB_SPEED_SUPER) {
                         result[0] |= mtu->u1_enable << USB_DEV_STAT_U1_ENABLED;
                         result[0] |= mtu->u2_enable << USB_DEV_STAT_U2_ENABLED;
                 }
@@ -329,8 +329,8 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu,
                 handled = handle_test_mode(mtu, setup);
                 break;
         case USB_DEVICE_U1_ENABLE:
-                if (mtu->g.speed != USB_SPEED_SUPER ||
-                        mtu->g.state != USB_STATE_CONFIGURED)
+                if (mtu->g.speed < USB_SPEED_SUPER ||
+                    mtu->g.state != USB_STATE_CONFIGURED)
                         break;
 
                 lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL);
@@ -344,8 +344,8 @@ static int ep0_handle_feature_dev(struct mtu3 *mtu,
                 handled = 1;
                 break;
         case USB_DEVICE_U2_ENABLE:
-                if (mtu->g.speed != USB_SPEED_SUPER ||
-                        mtu->g.state != USB_STATE_CONFIGURED)
+                if (mtu->g.speed < USB_SPEED_SUPER ||
+                    mtu->g.state != USB_STATE_CONFIGURED)
                         break;
 
                 lpc = mtu3_readl(mbase, U3D_LINK_POWER_CONTROL);
@@ -384,8 +384,8 @@ static int ep0_handle_feature(struct mtu3 *mtu,
                 break;
         case USB_RECIP_INTERFACE:
                 /* superspeed only */
-                if ((value == USB_INTRF_FUNC_SUSPEND)
-                        && (mtu->g.speed == USB_SPEED_SUPER)) {
+                if (value == USB_INTRF_FUNC_SUSPEND &&
+                    mtu->g.speed >= USB_SPEED_SUPER) {
                         /*
                          * forward the request because function drivers
                          * should handle it
diff --git a/drivers/usb/mtu3/mtu3_hw_regs.h b/drivers/usb/mtu3/mtu3_hw_regs.h
index a7e35f6ad90a..6953436a1688 100644
--- a/drivers/usb/mtu3/mtu3_hw_regs.h
+++ b/drivers/usb/mtu3/mtu3_hw_regs.h
@@ -467,6 +467,7 @@
 #define SSUSB_VBUS_CHG_INT_B_EN         BIT(6)
 
 /* U3D_SSUSB_U3_CTRL_0P */
+#define SSUSB_U3_PORT_SSP_SPEED BIT(9)
 #define SSUSB_U3_PORT_HOST_SEL          BIT(2)
 #define SSUSB_U3_PORT_PDN               BIT(1)
 #define SSUSB_U3_PORT_DIS               BIT(0)