X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=common%2Fusb_hub.c;h=70bc6e2931164d31fd0f86ad71a314b713870c9b;hb=19d1f1a2f3ccfbf85125150f7876ce22714b38bd;hp=086b155cb7477de8132480da305d8a482cfedc6a;hpb=a199a7244899f6385035459cbc62409bd9bbcc23;p=platform%2Fkernel%2Fu-boot.git

diff --git a/common/usb_hub.c b/common/usb_hub.c
index 086b155..70bc6e2 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -67,6 +67,26 @@ static inline bool usb_hub_is_superspeed(struct usb_device *hdev)
 	return hdev->descriptor.bDeviceProtocol == 3;
 }
 
+#ifdef CONFIG_DM_USB
+bool usb_hub_is_root_hub(struct udevice *hub)
+{
+	if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
+		return true;
+
+	return false;
+}
+
+static int usb_set_hub_depth(struct usb_device *dev, int depth)
+{
+	if (depth < 0 || depth > 4)
+		return -EINVAL;
+
+	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+		USB_REQ_SET_HUB_DEPTH, USB_DIR_OUT | USB_RT_HUB,
+		depth, 0, NULL, 0, USB_CNTL_TIMEOUT);
+}
+#endif
+
 static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
 {
 	unsigned short dtype = USB_DT_HUB;
@@ -102,9 +122,40 @@ static int usb_get_hub_status(struct usb_device *dev, void *data)
 
 int usb_get_port_status(struct usb_device *dev, int port, void *data)
 {
-	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+	int ret;
+
+	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 			USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
 			data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT);
+
+#ifdef CONFIG_DM_USB
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Translate the USB 3.0 hub port status field into the old version
+	 * that U-Boot understands. Do this only when the hub is not root hub.
+	 * For root hub, the port status field has already been translated
+	 * in the host controller driver (see xhci_submit_root() in xhci.c).
+	 *
+	 * Note: this only supports driver model.
+	 */
+
+	if (!usb_hub_is_root_hub(dev->dev) && usb_hub_is_superspeed(dev)) {
+		struct usb_port_status *status = (struct usb_port_status *)data;
+		u16 tmp = (status->wPortStatus) & USB_SS_PORT_STAT_MASK;
+
+		if (status->wPortStatus & USB_SS_PORT_STAT_POWER)
+			tmp |= USB_PORT_STAT_POWER;
+		if ((status->wPortStatus & USB_SS_PORT_STAT_SPEED) ==
+		    USB_SS_PORT_STAT_SPEED_5GBPS)
+			tmp |= USB_PORT_STAT_SUPER_SPEED;
+
+		status->wPortStatus = tmp;
+	}
+#endif
+
+	return ret;
 }
 
 
@@ -649,6 +700,56 @@ static int usb_hub_configure(struct usb_device *dev)
 		break;
 	}
 
+	switch (dev->descriptor.bDeviceProtocol) {
+	case USB_HUB_PR_FS:
+		break;
+	case USB_HUB_PR_HS_SINGLE_TT:
+		debug("Single TT\n");
+		break;
+	case USB_HUB_PR_HS_MULTI_TT:
+		ret = usb_set_interface(dev, 0, 1);
+		if (ret == 0) {
+			debug("TT per port\n");
+			hub->tt.multi = true;
+		} else {
+			debug("Using single TT (err %d)\n", ret);
+		}
+		break;
+	case USB_HUB_PR_SS:
+		/* USB 3.0 hubs don't have a TT */
+		break;
+	default:
+		debug("Unrecognized hub protocol %d\n",
+		      dev->descriptor.bDeviceProtocol);
+		break;
+	}
+
+	/* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
+	switch (hubCharacteristics & HUB_CHAR_TTTT) {
+	case HUB_TTTT_8_BITS:
+		if (dev->descriptor.bDeviceProtocol != 0) {
+			hub->tt.think_time = 666;
+			debug("TT requires at most %d FS bit times (%d ns)\n",
+			      8, hub->tt.think_time);
+		}
+		break;
+	case HUB_TTTT_16_BITS:
+		hub->tt.think_time = 666 * 2;
+		debug("TT requires at most %d FS bit times (%d ns)\n",
+		      16, hub->tt.think_time);
+		break;
+	case HUB_TTTT_24_BITS:
+		hub->tt.think_time = 666 * 3;
+		debug("TT requires at most %d FS bit times (%d ns)\n",
+		      24, hub->tt.think_time);
+		break;
+	case HUB_TTTT_32_BITS:
+		hub->tt.think_time = 666 * 4;
+		debug("TT requires at most %d FS bit times (%d ns)\n",
+		      32, hub->tt.think_time);
+		break;
+	}
+
 	debug("power on to power good time: %dms\n",
 	      descriptor->bPwrOn2PwrGood * 2);
 	debug("hub controller current requirement: %dmA\n",
@@ -685,6 +786,59 @@ static int usb_hub_configure(struct usb_device *dev)
 	debug("%sover-current condition exists\n",
 	      (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
 	      "" : "no ");
+
+#ifdef CONFIG_DM_USB
+	/*
+	 * Update USB host controller's internal representation of this hub
+	 * after the hub descriptor is fetched.
+	 */
+	ret = usb_update_hub_device(dev);
+	if (ret < 0 && ret != -ENOSYS) {
+		debug("%s: failed to update hub device for HCD (%x)\n",
+		      __func__, ret);
+		return ret;
+	}
+
+	/*
+	 * A maximum of seven tiers are allowed in a USB topology, and the
+	 * root hub occupies the first tier. The last tier ends with a normal
+	 * USB device. USB 3.0 hubs use a 20-bit field called 'route string'
+	 * to route packets to the designated downstream port. The hub uses a
+	 * hub depth value multiplied by four as an offset into the 'route
+	 * string' to locate the bits it uses to determine the downstream
+	 * port number.
+	 */
+	if (usb_hub_is_root_hub(dev->dev)) {
+		hub->hub_depth = -1;
+	} else {
+		struct udevice *hdev;
+		int depth = 0;
+
+		hdev = dev->dev->parent;
+		while (!usb_hub_is_root_hub(hdev)) {
+			depth++;
+			hdev = hdev->parent;
+		}
+
+		hub->hub_depth = depth;
+
+		if (usb_hub_is_superspeed(dev)) {
+			debug("set hub (%p) depth to %d\n", dev, depth);
+			/*
+			 * This request sets the value that the hub uses to
+			 * determine the index into the 'route string index'
+			 * for this hub.
+			 */
+			ret = usb_set_hub_depth(dev, depth);
+			if (ret < 0) {
+				debug("%s: failed to set hub depth (%lX)\n",
+				      __func__, dev->status);
+				return ret;
+			}
+		}
+	}
+#endif
+
 	usb_hub_power_on(hub);
 
 	/*