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Date: Mon, 24 Nov 2014 11:09:49 +0800
From: Hayes Wang <hayeswang@...ltek.com>
To: <netdev@...r.kernel.org>
CC: <nic_swsd@...ltek.com>, <linux-kernel@...r.kernel.org>,
<linux-usb@...r.kernel.org>, Hayes Wang <hayeswang@...ltek.com>
Subject: [PATCH net-next 2/2] r8152: use ECM mode for unsupported chips
Use usbnet_cdc_bind to initialize the chips which the driver doesn't
support yet, if the cdc_ether is set.
Signed-off-by: Hayes Wang <hayeswang@...ltek.com>
---
drivers/net/usb/r8152.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 87 insertions(+), 5 deletions(-)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 2d1c77e..9989e5b 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -25,9 +25,10 @@
#include <uapi/linux/mdio.h>
#include <linux/mdio.h>
#include <linux/usb/cdc.h>
+#include <linux/usb/usbnet.h>
/* Version Information */
-#define DRIVER_VERSION "v1.07.0 (2014/10/09)"
+#define DRIVER_VERSION "v1.08.0 (2014/11/24)"
#define DRIVER_AUTHOR "Realtek linux nic maintainers <nic_swsd@...ltek.com>"
#define DRIVER_DESC "Realtek RTL8152/RTL8153 Based USB Ethernet Adapters"
#define MODULENAME "r8152"
@@ -3219,12 +3220,24 @@ static void r8153_init(struct r8152 *tp)
rtl_tally_reset(tp);
}
+static bool rtl_vendor_mode(struct usb_interface *intf)
+{
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ return alt->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC;
+}
+
static int rtl8152_suspend(struct usb_interface *intf, pm_message_t message)
{
struct r8152 *tp = usb_get_intfdata(intf);
struct net_device *netdev = tp->netdev;
int ret = 0;
+#if defined(CONFIG_USB_NET_CDCETHER) || defined(CONFIG_USB_NET_CDCETHER_MODULE)
+ if (!rtl_vendor_mode(intf))
+ return usbnet_suspend(intf, message);
+#endif /* CONFIG_USB_NET_CDCETHER */
+
mutex_lock(&tp->control);
if (PMSG_IS_AUTO(message)) {
@@ -3261,6 +3274,11 @@ static int rtl8152_resume(struct usb_interface *intf)
{
struct r8152 *tp = usb_get_intfdata(intf);
+#if defined(CONFIG_USB_NET_CDCETHER) || defined(CONFIG_USB_NET_CDCETHER_MODULE)
+ if (!rtl_vendor_mode(intf))
+ return usbnet_resume(intf);
+#endif /* CONFIG_USB_NET_CDCETHER */
+
mutex_lock(&tp->control);
if (!test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
@@ -3742,6 +3760,17 @@ static void r8152b_get_version(struct r8152 *tp)
}
}
+static bool rtl_supported(struct usb_device *udev)
+{
+ struct r8152 fake;
+
+ memset(&fake, 0, sizeof(fake));
+ fake.udev = udev;
+ r8152b_get_version(&fake);
+
+ return fake.version != RTL_VER_UNKNOWN;
+}
+
static void rtl8152_unload(struct r8152 *tp)
{
if (test_bit(RTL8152_UNPLUG, &tp->flags))
@@ -3803,13 +3832,28 @@ static int rtl8152_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
+ bool support = rtl_supported(udev);
struct r8152 *tp;
struct net_device *netdev;
- int ret;
+ int ret = -ENODEV;
- if (udev->actconfig->desc.bConfigurationValue != 1) {
- usb_driver_set_configuration(udev, 1);
- return -ENODEV;
+ if (!rtl_vendor_mode(intf)) {
+ if (support)
+ usb_driver_set_configuration(udev, 1);
+#if defined(CONFIG_USB_NET_CDCETHER) || defined(CONFIG_USB_NET_CDCETHER_MODULE)
+ else
+ ret = usbnet_probe(intf, id);
+#endif /* CONFIG_USB_NET_CDCETHER */
+
+ return ret;
+ } else if (!support) {
+ /* The driver doesn't support this chip yet.
+ * Try to use cdc_ether.
+ */
+#if defined(CONFIG_USB_NET_CDCETHER) || defined(CONFIG_USB_NET_CDCETHER_MODULE)
+ usb_driver_set_configuration(udev, 2);
+#endif /* CONFIG_USB_NET_CDCETHER */
+ return ret;
}
usb_reset_device(udev);
@@ -3899,6 +3943,13 @@ static void rtl8152_disconnect(struct usb_interface *intf)
{
struct r8152 *tp = usb_get_intfdata(intf);
+#if defined(CONFIG_USB_NET_CDCETHER) || defined(CONFIG_USB_NET_CDCETHER_MODULE)
+ if (!rtl_vendor_mode(intf)) {
+ usbnet_disconnect(intf);
+ return;
+ }
+#endif /* CONFIG_USB_NET_CDCETHER */
+
usb_set_intfdata(intf, NULL);
if (tp) {
struct usb_device *udev = tp->udev;
@@ -3913,6 +3964,35 @@ static void rtl8152_disconnect(struct usb_interface *intf)
}
}
+#if defined(CONFIG_USB_NET_CDCETHER) || defined(CONFIG_USB_NET_CDCETHER_MODULE)
+static const struct driver_info cdc_info = {
+ .description = "r815x CDC Ethernet Device",
+ .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
+ .bind = usbnet_cdc_bind,
+ .unbind = usbnet_cdc_unbind,
+ .status = usbnet_cdc_status,
+ .manage_power = usbnet_manage_power,
+};
+
+#define REALTEK_USB_DEVICE(vend, prod) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
+ USB_DEVICE_ID_MATCH_INT_CLASS, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC \
+}, \
+{ \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | \
+ USB_DEVICE_ID_MATCH_DEVICE, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceClass = USB_CLASS_COMM, \
+ .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
+ .bInterfaceProtocol = USB_CDC_PROTO_NONE, \
+ .driver_info = (unsigned long)&cdc_info,
+
+#else
+
#define REALTEK_USB_DEVICE(vend, prod) \
.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
USB_DEVICE_ID_MATCH_INT_CLASS, \
@@ -3929,6 +4009,8 @@ static void rtl8152_disconnect(struct usb_interface *intf)
.bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
.bInterfaceProtocol = USB_CDC_PROTO_NONE
+#endif /* CONFIG_USB_NET_CDCETHER */
+
/* table of devices that work with this driver */
static struct usb_device_id rtl8152_table[] = {
{REALTEK_USB_DEVICE(VENDOR_ID_REALTEK, 0x8152)},
--
1.9.3
--
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