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-rw-r--r--meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0072-usb-hub-disable-autosuspend-for-SMSC-hubs.patch51
1 files changed, 51 insertions, 0 deletions
diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0072-usb-hub-disable-autosuspend-for-SMSC-hubs.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0072-usb-hub-disable-autosuspend-for-SMSC-hubs.patch
new file mode 100644
index 0000000..4989e05
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0072-usb-hub-disable-autosuspend-for-SMSC-hubs.patch
@@ -0,0 +1,51 @@
+From 8276db72581e4d1e3f89ccce84555c9fea145e16 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 hubs
+
+Disable autosuspend for SMSC hubs (USB5534B/USB2134B devices)
+This is a workaround for RCar Gen3 XHCI
+
+Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
+---
+ drivers/usb/core/hub.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index cbb1467..2c4c006 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -34,7 +34,9 @@
+ #include "otg_whitelist.h"
+
+ #define USB_VENDOR_GENESYS_LOGIC 0x05e3
++#define USB_VENDOR_SMSC 0x0424
+ #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 +1847,9 @@ 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 +5231,10 @@ 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_GENESYS_LOGIC,
+--
+1.9.1
+