If CONFIG_USB_NET_CDCETHER is enabled, support ECM mode through cdc_ether
driver.
Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
---
drivers/net/usb/r8152.c | 255 ++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 247 insertions(+), 8 deletions(-)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 8468704..c4e8339 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -27,6 +27,7 @@
#include <linux/usb/cdc.h>
#include <linux/suspend.h>
#include <linux/acpi.h>
+#include <linux/usb/usbnet.h>
/* Information for net-next */
#define NETNEXT_VERSION "08"
@@ -4402,6 +4403,243 @@ static void rtl8152_disconnect(struct usb_interface *intf)
}
}
+static int rtl_usbnet_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ switch (id->bInterfaceClass) {
+ case USB_CLASS_VENDOR_SPEC:
+ return rtl8152_probe(intf, id);
+#if IS_ENABLED(CONFIG_USB_NET_CDCETHER)
+ case USB_CLASS_COMM:
+ if (id->bInterfaceSubClass == USB_CDC_SUBCLASS_ETHERNET &&
+ id->bInterfaceProtocol == USB_CDC_PROTO_NONE)
+ return usbnet_probe(intf, id);
+#endif
+ default:
+ return -ENODEV;
+ }
+}
+
+static void rtl_usbnet_disconnect(struct usb_interface *intf)
+{
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ switch (alt->desc.bInterfaceClass) {
+ case USB_CLASS_VENDOR_SPEC:
+ rtl8152_disconnect(intf);
+ break;
+#if IS_ENABLED(CONFIG_USB_NET_CDCETHER)
+ case USB_CLASS_COMM:
+ if (alt->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_ETHERNET &&
+ alt->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE) {
+ usbnet_disconnect(intf);
+ break;
+ }
+#endif
+ default:
+ break;
+ }
+}
+
+static int rtl_usbnet_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ switch (alt->desc.bInterfaceClass) {
+ case USB_CLASS_VENDOR_SPEC:
+ return rtl8152_suspend(intf, message);
+#if IS_ENABLED(CONFIG_USB_NET_CDCETHER)
+ case USB_CLASS_COMM:
+ if (alt->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_ETHERNET &&
+ alt->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE)
+ return usbnet_suspend(intf, message);
+#endif
+ default:
+ return -ENODEV;
+ }
+}
+
+static int rtl_usbnet_resume(struct usb_interface *intf)
+{
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ switch (alt->desc.bInterfaceClass) {
+ case USB_CLASS_VENDOR_SPEC:
+ return rtl8152_resume(intf);
+#if IS_ENABLED(CONFIG_USB_NET_CDCETHER)
+ case USB_CLASS_COMM:
+ if (alt->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_ETHERNET &&
+ alt->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE)
+ return usbnet_resume(intf);
+#endif
+ default:
+ return -ENODEV;
+ }
+}
+
+static int rtl_usbnet_reset_resume(struct usb_interface *intf)
+{
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ switch (alt->desc.bInterfaceClass) {
+ case USB_CLASS_VENDOR_SPEC:
+ return rtl8152_reset_resume(intf);
+#if IS_ENABLED(CONFIG_USB_NET_CDCETHER)
+ case USB_CLASS_COMM:
+ if (alt->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_ETHERNET &&
+ alt->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE)
+ return usbnet_resume(intf);
+#endif
+ default:
+ return -ENODEV;
+ }
+}
+
+static int rtl_usbnet_pre_reset(struct usb_interface *intf)
+{
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ if (!usb_get_intfdata(intf))
+ return 0;
+
+ switch (alt->desc.bInterfaceClass) {
+ case USB_CLASS_VENDOR_SPEC:
+ return rtl8152_pre_reset(intf);
+ default:
+ return 1;
+ }
+}
+
+static int rtl_usbnet_post_reset(struct usb_interface *intf)
+{
+ struct usb_host_interface *alt = intf->cur_altsetting;
+
+ if (!usb_get_intfdata(intf))
+ return 0;
+
+ switch (alt->desc.bInterfaceClass) {
+ case USB_CLASS_VENDOR_SPEC:
+ return rtl8152_post_reset(intf);
+ default:
+ return 1;
+ }
+}
+
+#if IS_ENABLED(CONFIG_USB_NET_CDCETHER)
+
+static int r815x_mdio_read(struct net_device *netdev, int phy_id, int reg)
+{
+ struct usbnet *dev = netdev_priv(netdev);
+ __le32 tmp;
+ u16 index;
+ u8 shift;
+ int err;
+
+ if (phy_id != R8152_PHY_ID)
+ return -EINVAL;
+
+ index = 0xB400 + reg * 2;
+ shift = index & 2;
+ index &= ~3;
+
+ err = usbnet_read_cmd(dev, RTL8152_REQ_GET_REGS, RTL8152_REQT_READ,
+ index, MCU_TYPE_PLA, &tmp, sizeof(tmp));
+
+ if (err > 0) {
+ err = __le32_to_cpu(tmp);
+ err >>= (shift * 8);
+ err &= 0xffff;
+ }
+
+ return err;
+}
+
+static
+void r815x_mdio_write(struct net_device *netdev, int phy_id, int reg, int val)
+{
+ struct usbnet *dev = netdev_priv(netdev);
+ __le32 tmp;
+ u16 index;
+ u16 byen = BYTE_EN_WORD;
+ u8 shift;
+
+ if (phy_id != R8152_PHY_ID)
+ return;
+
+ val &= 0xffff;
+ index = 0xB400 + reg * 2;
+ shift = index & 2;
+ index &= ~3;
+
+ if (shift) {
+ byen <<= shift;
+ val <<= (shift * 8);
+ }
+
+ tmp = __cpu_to_le32(val);
+
+ usbnet_write_cmd(dev, RTL8152_REQ_GET_REGS, RTL8152_REQT_WRITE, index,
+ MCU_TYPE_PLA | byen, &tmp, sizeof(tmp));
+}
+
+static int rtl_ecm_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ __le32 tmp;
+ int err;
+
+ err = usbnet_cdc_bind(dev, intf);
+ if (err < 0)
+ goto err1;
+
+ tmp = __cpu_to_le32(0xa000);
+ err = usbnet_write_cmd(dev, RTL8152_REQ_GET_REGS, RTL8152_REQT_WRITE,
+ PLA_OCP_GPHY_BASE, MCU_TYPE_PLA | BYTE_EN_WORD,
+ &tmp, sizeof(tmp));
+ if (err < 0)
+ goto err2;
+
+ dev->mii.dev = dev->net;
+ dev->mii.mdio_read = r815x_mdio_read;
+ dev->mii.mdio_write = r815x_mdio_write;
+ dev->mii.phy_id_mask = 0x3f;
+ dev->mii.reg_num_mask = 0x1f;
+ dev->mii.phy_id = R8152_PHY_ID;
+
+ switch (rtl_get_version(intf)) {
+ case RTL_VER_01:
+ case RTL_VER_02:
+ dev->mii.supports_gmii = 0;
+ break;
+ default:
+ dev->mii.supports_gmii = 1;
+ break;
+ }
+
+ return 0;
+
+err2:
+ usbnet_cdc_unbind(dev, intf);
+err1:
+ return err;
+}
+
+static const struct driver_info rtl_ecm_info = {
+ .description = "RTL8152/RTL8153 ECM Device",
+ .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
+ .bind = rtl_ecm_bind,
+ .unbind = usbnet_cdc_unbind,
+ .status = usbnet_cdc_status,
+ .manage_power = usbnet_manage_power,
+};
+
+#define RTL_ECM_INFO ((unsigned long)&rtl_ecm_info)
+
+#else
+
+#define RTL_ECM_INFO 0
+
+#endif
+
#define REALTEK_USB_DEVICE(vend, prod) \
.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
USB_DEVICE_ID_MATCH_INT_CLASS, \
@@ -4416,7 +4654,8 @@ static void rtl8152_disconnect(struct usb_interface *intf)
.idProduct = (prod), \
.bInterfaceClass = USB_CLASS_COMM, \
.bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
- .bInterfaceProtocol = USB_CDC_PROTO_NONE
+ .bInterfaceProtocol = USB_CDC_PROTO_NONE, \
+ .driver_info = RTL_ECM_INFO,
/* table of devices that work with this driver */
static struct usb_device_id rtl8152_table[] = {
@@ -4434,13 +4673,13 @@ MODULE_DEVICE_TABLE(usb, rtl8152_table);
static struct usb_driver rtl8152_driver = {
.name = MODULENAME,
.id_table = rtl8152_table,
- .probe = rtl8152_probe,
- .disconnect = rtl8152_disconnect,
- .suspend = rtl8152_suspend,
- .resume = rtl8152_resume,
- .reset_resume = rtl8152_reset_resume,
- .pre_reset = rtl8152_pre_reset,
- .post_reset = rtl8152_post_reset,
+ .probe = rtl_usbnet_probe,
+ .disconnect = rtl_usbnet_disconnect,
+ .suspend = rtl_usbnet_suspend,
+ .resume = rtl_usbnet_resume,
+ .reset_resume = rtl_usbnet_reset_resume,
+ .pre_reset = rtl_usbnet_pre_reset,
+ .post_reset = rtl_usbnet_post_reset,
.supports_autosuspend = 1,
.disable_hub_initiated_lpm = 1,
};
--
2.7.4
--
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