1 #include <linux/module.h>
2 #include <linux/netdevice.h>
5 #include <linux/usb/cdc.h>
6 #include <linux/usb/usbnet.h>
8 #define RTL815x_REQT_READ 0xc0
9 #define RTL815x_REQT_WRITE 0x40
10 #define RTL815x_REQ_GET_REGS 0x05
11 #define RTL815x_REQ_SET_REGS 0x05
13 #define MCU_TYPE_PLA 0x0100
14 #define OCP_BASE 0xe86c
15 #define BASE_MII 0xa400
17 #define BYTE_EN_DWORD 0xff
18 #define BYTE_EN_WORD 0x33
19 #define BYTE_EN_BYTE 0x11
21 #define R815x_PHY_ID 32
22 #define REALTEK_VENDOR_ID 0x0bda
25 static int pla_read_word(struct usb_device *udev, u16 index)
33 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
34 RTL815x_REQ_GET_REGS, RTL815x_REQT_READ,
35 index, MCU_TYPE_PLA, &ocp_data, sizeof(ocp_data),
40 data = __le32_to_cpu(ocp_data);
47 static int pla_write_word(struct usb_device *udev, u16 index, u32 data)
51 u16 byen = BYTE_EN_WORD;
64 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
65 RTL815x_REQ_GET_REGS, RTL815x_REQT_READ,
66 index, MCU_TYPE_PLA, &ocp_data, sizeof(ocp_data),
71 data |= __le32_to_cpu(ocp_data) & ~mask;
72 ocp_data = __cpu_to_le32(data);
74 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
75 RTL815x_REQ_SET_REGS, RTL815x_REQT_WRITE,
76 index, MCU_TYPE_PLA | byen, &ocp_data,
77 sizeof(ocp_data), 500);
82 static int ocp_reg_read(struct usbnet *dev, u16 addr)
84 u16 ocp_base, ocp_index;
87 ocp_base = addr & 0xf000;
88 ret = pla_write_word(dev->udev, OCP_BASE, ocp_base);
92 ocp_index = (addr & 0x0fff) | 0xb000;
93 ret = pla_read_word(dev->udev, ocp_index);
99 static int ocp_reg_write(struct usbnet *dev, u16 addr, u16 data)
101 u16 ocp_base, ocp_index;
104 ocp_base = addr & 0xf000;
105 ret = pla_write_word(dev->udev, OCP_BASE, ocp_base);
109 ocp_index = (addr & 0x0fff) | 0xb000;
110 ret = pla_write_word(dev->udev, ocp_index, data);
116 static int r815x_mdio_read(struct net_device *netdev, int phy_id, int reg)
118 struct usbnet *dev = netdev_priv(netdev);
120 if (phy_id != R815x_PHY_ID)
123 return ocp_reg_read(dev, BASE_MII + reg * 2);
127 void r815x_mdio_write(struct net_device *netdev, int phy_id, int reg, int val)
129 struct usbnet *dev = netdev_priv(netdev);
131 if (phy_id != R815x_PHY_ID)
134 ocp_reg_write(dev, BASE_MII + reg * 2, val);
137 static int r8153_bind(struct usbnet *dev, struct usb_interface *intf)
141 status = usbnet_cdc_bind(dev, intf);
145 dev->mii.dev = dev->net;
146 dev->mii.mdio_read = r815x_mdio_read;
147 dev->mii.mdio_write = r815x_mdio_write;
148 dev->mii.phy_id_mask = 0x3f;
149 dev->mii.reg_num_mask = 0x1f;
150 dev->mii.phy_id = R815x_PHY_ID;
151 dev->mii.supports_gmii = 1;
156 static int r8152_bind(struct usbnet *dev, struct usb_interface *intf)
160 status = usbnet_cdc_bind(dev, intf);
164 dev->mii.dev = dev->net;
165 dev->mii.mdio_read = r815x_mdio_read;
166 dev->mii.mdio_write = r815x_mdio_write;
167 dev->mii.phy_id_mask = 0x3f;
168 dev->mii.reg_num_mask = 0x1f;
169 dev->mii.phy_id = R815x_PHY_ID;
170 dev->mii.supports_gmii = 0;
175 static const struct driver_info r8152_info = {
176 .description = "RTL8152 ECM Device",
177 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
179 .unbind = usbnet_cdc_unbind,
180 .status = usbnet_cdc_status,
181 .manage_power = usbnet_manage_power,
184 static const struct driver_info r8153_info = {
185 .description = "RTL8153 ECM Device",
186 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
188 .unbind = usbnet_cdc_unbind,
189 .status = usbnet_cdc_status,
190 .manage_power = usbnet_manage_power,
193 static const struct usb_device_id products[] = {
195 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
196 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
197 #if defined(CONFIG_USB_RTL8152) || defined(CONFIG_USB_RTL8152_MODULE)
200 .driver_info = (unsigned long) &r8152_info,
205 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
206 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
207 #if defined(CONFIG_USB_RTL8153) || defined(CONFIG_USB_RTL8153_MODULE)
210 .driver_info = (unsigned long) &r8153_info,
216 MODULE_DEVICE_TABLE(usb, products);
218 static struct usb_driver r815x_driver = {
220 .id_table = products,
221 .probe = usbnet_probe,
222 .disconnect = usbnet_disconnect,
223 .suspend = usbnet_suspend,
224 .resume = usbnet_resume,
225 .reset_resume = usbnet_resume,
226 .supports_autosuspend = 1,
227 .disable_hub_initiated_lpm = 1,
230 module_usb_driver(r815x_driver);
232 MODULE_AUTHOR("Hayes Wang");
233 MODULE_DESCRIPTION("Realtek USB ECM device");
234 MODULE_LICENSE("GPL");