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From f05c07d846b5b815709cd741a85e922ddb72b958 Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Fri, 11 Aug 2017 17:30:40 +0300
Subject: [PATCH] usb: hub: disable autosuspend for SMSC and TI hubs

Disable autosuspend for SMSC hubs (USB5534B/USB2134B devices) and
TI hub (TUSB8041)
This is a workaround for RCar Gen3 XHCI on VB and VB2

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
---
 drivers/usb/core/hub.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index cbb1467..6f5575f 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -34,7 +34,10 @@
 #include "otg_whitelist.h"
 
 #define USB_VENDOR_GENESYS_LOGIC		0x05e3
+#define USB_VENDOR_SMSC				0x0424
+#define USB_VENDOR_TI				0x0451
 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND	0x01
+#define HUB_QUIRK_DISABLE_AUTOSUSPEND		0x02
 
 /* Protect struct usb_device->state and ->children members
  * Note: Both are also protected by ->dev.sem, except that ->state can
@@ -1845,6 +1848,9 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	if (id->driver_info & HUB_QUIRK_CHECK_PORT_AUTOSUSPEND)
 		hub->quirk_check_port_auto_suspend = 1;
 
+	if (id->driver_info & HUB_QUIRK_DISABLE_AUTOSUSPEND)
+		pm_runtime_set_autosuspend_delay(&hdev->dev, -1);
+
 	if (hub_configure(hub, endpoint) >= 0)
 		return 0;
 
@@ -5226,6 +5232,14 @@ static void hub_event(struct work_struct *work)
 }
 
 static const struct usb_device_id hub_id_table[] = {
+    { .match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_CLASS,
+      .idVendor = USB_VENDOR_SMSC,
+      .bInterfaceClass = USB_CLASS_HUB,
+      .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
+    { .match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_CLASS,
+      .idVendor = USB_VENDOR_TI,
+      .bInterfaceClass = USB_CLASS_HUB,
+      .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
     { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
 			| USB_DEVICE_ID_MATCH_INT_CLASS,
       .idVendor = USB_VENDOR_GENESYS_LOGIC,
-- 
1.9.1