2 * Realtek RTL8366 SMI interface driver
4 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/device.h>
14 #include <linux/delay.h>
15 #include <linux/gpio.h>
16 #include <linux/spinlock.h>
17 #include <linux/skbuff.h>
19 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
20 #include <linux/debugfs.h>
23 #include "rtl8366_smi.h"
25 #define RTL8366_SMI_ACK_RETRY_COUNT 5
26 #define RTL8366_SMI_CLK_DELAY 10 /* nsec */
28 static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
30 ndelay(RTL8366_SMI_CLK_DELAY);
33 static void rtl8366_smi_start(struct rtl8366_smi *smi)
35 unsigned int sda = smi->gpio_sda;
36 unsigned int sck = smi->gpio_sck;
39 * Set GPIO pins to output mode, with initial state:
42 gpio_direction_output(sck, 0);
43 gpio_direction_output(sda, 1);
44 rtl8366_smi_clk_delay(smi);
46 /* CLK 1: 0 -> 1, 1 -> 0 */
47 gpio_set_value(sck, 1);
48 rtl8366_smi_clk_delay(smi);
49 gpio_set_value(sck, 0);
50 rtl8366_smi_clk_delay(smi);
53 gpio_set_value(sck, 1);
54 rtl8366_smi_clk_delay(smi);
55 gpio_set_value(sda, 0);
56 rtl8366_smi_clk_delay(smi);
57 gpio_set_value(sck, 0);
58 rtl8366_smi_clk_delay(smi);
59 gpio_set_value(sda, 1);
62 static void rtl8366_smi_stop(struct rtl8366_smi *smi)
64 unsigned int sda = smi->gpio_sda;
65 unsigned int sck = smi->gpio_sck;
67 rtl8366_smi_clk_delay(smi);
68 gpio_set_value(sda, 0);
69 gpio_set_value(sck, 1);
70 rtl8366_smi_clk_delay(smi);
71 gpio_set_value(sda, 1);
72 rtl8366_smi_clk_delay(smi);
73 gpio_set_value(sck, 1);
74 rtl8366_smi_clk_delay(smi);
75 gpio_set_value(sck, 0);
76 rtl8366_smi_clk_delay(smi);
77 gpio_set_value(sck, 1);
80 rtl8366_smi_clk_delay(smi);
81 gpio_set_value(sck, 0);
82 rtl8366_smi_clk_delay(smi);
83 gpio_set_value(sck, 1);
85 /* set GPIO pins to input mode */
86 gpio_direction_input(sda);
87 gpio_direction_input(sck);
90 static void rtl8366_smi_write_bits(struct rtl8366_smi *smi, u32 data, u32 len)
92 unsigned int sda = smi->gpio_sda;
93 unsigned int sck = smi->gpio_sck;
95 for (; len > 0; len--) {
96 rtl8366_smi_clk_delay(smi);
99 gpio_set_value(sda, !!(data & ( 1 << (len - 1))));
100 rtl8366_smi_clk_delay(smi);
103 gpio_set_value(sck, 1);
104 rtl8366_smi_clk_delay(smi);
105 gpio_set_value(sck, 0);
109 static void rtl8366_smi_read_bits(struct rtl8366_smi *smi, u32 len, u32 *data)
111 unsigned int sda = smi->gpio_sda;
112 unsigned int sck = smi->gpio_sck;
114 gpio_direction_input(sda);
116 for (*data = 0; len > 0; len--) {
119 rtl8366_smi_clk_delay(smi);
122 gpio_set_value(sck, 1);
123 rtl8366_smi_clk_delay(smi);
124 u = !!gpio_get_value(sda);
125 gpio_set_value(sck, 0);
127 *data |= (u << (len - 1));
130 gpio_direction_output(sda, 0);
133 static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
141 rtl8366_smi_read_bits(smi, 1, &ack);
145 if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT)
152 static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
154 rtl8366_smi_write_bits(smi, data, 8);
155 return rtl8366_smi_wait_for_ack(smi);
158 static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
163 rtl8366_smi_read_bits(smi, 8, &t);
167 rtl8366_smi_write_bits(smi, 0x00, 1);
172 static int rtl8366_smi_read_byte1(struct rtl8366_smi *smi, u8 *data)
177 rtl8366_smi_read_bits(smi, 8, &t);
181 rtl8366_smi_write_bits(smi, 0x01, 1);
186 int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
193 spin_lock_irqsave(&smi->lock, flags);
195 rtl8366_smi_start(smi);
197 /* send READ command */
198 ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x01);
203 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
208 ret = rtl8366_smi_write_byte(smi, addr >> 8);
213 rtl8366_smi_read_byte0(smi, &lo);
214 /* read DATA[15:8] */
215 rtl8366_smi_read_byte1(smi, &hi);
217 *data = ((u32) lo) | (((u32) hi) << 8);
222 rtl8366_smi_stop(smi);
223 spin_unlock_irqrestore(&smi->lock, flags);
227 EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
229 int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
234 spin_lock_irqsave(&smi->lock, flags);
236 rtl8366_smi_start(smi);
238 /* send WRITE command */
239 ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x00);
244 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
249 ret = rtl8366_smi_write_byte(smi, addr >> 8);
253 /* write DATA[7:0] */
254 ret = rtl8366_smi_write_byte(smi, data & 0xff);
258 /* write DATA[15:8] */
259 ret = rtl8366_smi_write_byte(smi, data >> 8);
266 rtl8366_smi_stop(smi);
267 spin_unlock_irqrestore(&smi->lock, flags);
271 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
273 int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
278 err = rtl8366_smi_read_reg(smi, addr, &t);
282 err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
286 EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
288 static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
294 for (i = 0; i < smi->num_ports; i++) {
297 err = smi->ops->get_mc_index(smi, i, &index);
301 if (mc_index == index) {
310 int rtl8366_set_vlan(struct rtl8366_smi *smi, int vid, u32 member, u32 untag,
313 struct rtl8366_vlan_4k vlan4k;
317 /* Update the 4K table */
318 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
322 vlan4k.member = member;
323 vlan4k.untag = untag;
325 err = smi->ops->set_vlan_4k(smi, &vlan4k);
329 /* Try to find an existing MC entry for this VID */
330 for (i = 0; i < smi->num_vlan_mc; i++) {
331 struct rtl8366_vlan_mc vlanmc;
333 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
337 if (vid == vlanmc.vid) {
338 /* update the MC entry */
339 vlanmc.member = member;
340 vlanmc.untag = untag;
343 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
350 EXPORT_SYMBOL_GPL(rtl8366_set_vlan);
352 static int rtl8366_get_pvid(struct rtl8366_smi *smi, int port, int *val)
354 struct rtl8366_vlan_mc vlanmc;
358 err = smi->ops->get_mc_index(smi, port, &index);
362 err = smi->ops->get_vlan_mc(smi, index, &vlanmc);
370 static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
373 struct rtl8366_vlan_mc vlanmc;
374 struct rtl8366_vlan_4k vlan4k;
378 /* Try to find an existing MC entry for this VID */
379 for (i = 0; i < smi->num_vlan_mc; i++) {
380 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
384 if (vid == vlanmc.vid) {
385 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
389 err = smi->ops->set_mc_index(smi, port, i);
394 /* We have no MC entry for this VID, try to find an empty one */
395 for (i = 0; i < smi->num_vlan_mc; i++) {
396 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
400 if (vlanmc.vid == 0 && vlanmc.member == 0) {
401 /* Update the entry from the 4K table */
402 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
407 vlanmc.member = vlan4k.member;
408 vlanmc.untag = vlan4k.untag;
409 vlanmc.fid = vlan4k.fid;
410 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
414 err = smi->ops->set_mc_index(smi, port, i);
419 /* MC table is full, try to find an unused entry and replace it */
420 for (i = 0; i < smi->num_vlan_mc; i++) {
423 err = rtl8366_mc_is_used(smi, i, &used);
428 /* Update the entry from the 4K table */
429 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
434 vlanmc.member = vlan4k.member;
435 vlanmc.untag = vlan4k.untag;
436 vlanmc.fid = vlan4k.fid;
437 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
441 err = smi->ops->set_mc_index(smi, port, i);
447 "all VLAN member configurations are in use\n");
452 int rtl8366_reset_vlan(struct rtl8366_smi *smi)
454 struct rtl8366_vlan_mc vlanmc;
458 /* clear VLAN member configurations */
464 for (i = 0; i < smi->num_vlan_mc; i++) {
465 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
470 for (i = 0; i < smi->num_ports; i++) {
471 if (i == smi->cpu_port)
474 err = rtl8366_set_vlan(smi, (i + 1),
475 (1 << i) | (1 << smi->cpu_port),
476 (1 << i) | (1 << smi->cpu_port),
481 err = rtl8366_set_pvid(smi, i, (i + 1));
488 EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
490 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
491 int rtl8366_debugfs_open(struct inode *inode, struct file *file)
493 file->private_data = inode->i_private;
496 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
498 static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
499 char __user *user_buf,
500 size_t count, loff_t *ppos)
502 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
504 char *buf = smi->buf;
506 len += snprintf(buf + len, sizeof(smi->buf) - len,
507 "%2s %6s %4s %6s %6s %3s\n",
508 "id", "vid","prio", "member", "untag", "fid");
510 for (i = 0; i < smi->num_vlan_mc; ++i) {
511 struct rtl8366_vlan_mc vlanmc;
513 smi->ops->get_vlan_mc(smi, i, &vlanmc);
515 len += snprintf(buf + len, sizeof(smi->buf) - len,
516 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
517 i, vlanmc.vid, vlanmc.priority,
518 vlanmc.member, vlanmc.untag, vlanmc.fid);
521 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
524 static ssize_t rtl8366_read_debugfs_reg(struct file *file,
525 char __user *user_buf,
526 size_t count, loff_t *ppos)
528 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
529 u32 t, reg = smi->dbg_reg;
531 char *buf = smi->buf;
533 memset(buf, '\0', sizeof(smi->buf));
535 err = rtl8366_smi_read_reg(smi, reg, &t);
537 len += snprintf(buf, sizeof(smi->buf),
538 "Read failed (reg: 0x%04x)\n", reg);
539 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
542 len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
545 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
548 static ssize_t rtl8366_write_debugfs_reg(struct file *file,
549 const char __user *user_buf,
550 size_t count, loff_t *ppos)
552 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
554 u32 reg = smi->dbg_reg;
557 char *buf = smi->buf;
559 len = min(count, sizeof(smi->buf) - 1);
560 if (copy_from_user(buf, user_buf, len)) {
561 dev_err(smi->parent, "copy from user failed\n");
566 if (len > 0 && buf[len - 1] == '\n')
570 if (strict_strtoul(buf, 16, &data)) {
571 dev_err(smi->parent, "Invalid reg value %s\n", buf);
573 err = rtl8366_smi_write_reg(smi, reg, data);
576 "writing reg 0x%04x val 0x%04lx failed\n",
584 static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
585 char __user *user_buf,
586 size_t count, loff_t *ppos)
588 struct rtl8366_smi *smi = file->private_data;
590 char *buf = smi->buf;
592 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
595 for (i = 0; i < smi->num_ports; i++) {
598 snprintf(port_buf, sizeof(port_buf), "Port %d", i);
599 len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
602 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
604 for (i = 0; i < smi->num_mib_counters; i++) {
605 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
606 smi->mib_counters[i].name);
607 for (j = 0; j < smi->num_ports; j++) {
608 unsigned long long counter = 0;
610 if (!smi->ops->get_mib_counter(smi, i, j, &counter))
611 len += snprintf(buf + len,
612 sizeof(smi->buf) - len,
615 len += snprintf(buf + len,
616 sizeof(smi->buf) - len,
619 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
622 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
625 static const struct file_operations fops_rtl8366_regs = {
626 .read = rtl8366_read_debugfs_reg,
627 .write = rtl8366_write_debugfs_reg,
628 .open = rtl8366_debugfs_open,
632 static const struct file_operations fops_rtl8366_vlan_mc = {
633 .read = rtl8366_read_debugfs_vlan_mc,
634 .open = rtl8366_debugfs_open,
638 static const struct file_operations fops_rtl8366_mibs = {
639 .read = rtl8366_read_debugfs_mibs,
640 .open = rtl8366_debugfs_open,
644 static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
649 if (!smi->debugfs_root)
650 smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
653 if (!smi->debugfs_root) {
654 dev_err(smi->parent, "Unable to create debugfs dir\n");
657 root = smi->debugfs_root;
659 node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
662 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
667 node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
670 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
675 node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
676 &fops_rtl8366_vlan_mc);
678 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
683 node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
686 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
690 static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
692 if (smi->debugfs_root) {
693 debugfs_remove_recursive(smi->debugfs_root);
694 smi->debugfs_root = NULL;
698 static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
699 static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
700 #endif /* CONFIG_RTL8366S_PHY_DEBUG_FS */
702 static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
707 smi->mii_bus = mdiobus_alloc();
708 if (smi->mii_bus == NULL) {
713 smi->mii_bus->priv = (void *) smi;
714 smi->mii_bus->name = dev_name(smi->parent);
715 smi->mii_bus->read = smi->ops->mii_read;
716 smi->mii_bus->write = smi->ops->mii_write;
717 snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
718 dev_name(smi->parent));
719 smi->mii_bus->parent = smi->parent;
720 smi->mii_bus->phy_mask = ~(0x1f);
721 smi->mii_bus->irq = smi->mii_irq;
722 for (i = 0; i < PHY_MAX_ADDR; i++)
723 smi->mii_irq[i] = PHY_POLL;
725 ret = mdiobus_register(smi->mii_bus);
732 mdiobus_free(smi->mii_bus);
737 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
739 mdiobus_unregister(smi->mii_bus);
740 mdiobus_free(smi->mii_bus);
743 int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
745 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
746 return rtl8366_get_pvid(smi, port, val);
748 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
750 int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
752 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
753 return rtl8366_set_pvid(smi, port, val);
755 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
757 int rtl8366_sw_get_port_mib(struct switch_dev *dev,
758 const struct switch_attr *attr,
759 struct switch_val *val)
761 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
763 unsigned long long counter = 0;
764 char *buf = smi->buf;
766 if (val->port_vlan >= smi->num_ports)
769 len += snprintf(buf + len, sizeof(smi->buf) - len,
770 "Port %d MIB counters\n",
773 for (i = 0; i < smi->num_mib_counters; ++i) {
774 len += snprintf(buf + len, sizeof(smi->buf) - len,
775 "%-36s: ", smi->mib_counters[i].name);
776 if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
778 len += snprintf(buf + len, sizeof(smi->buf) - len,
781 len += snprintf(buf + len, sizeof(smi->buf) - len,
789 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
791 int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
792 const struct switch_attr *attr,
793 struct switch_val *val)
797 struct rtl8366_vlan_4k vlan4k;
798 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
799 char *buf = smi->buf;
802 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
805 memset(buf, '\0', sizeof(smi->buf));
807 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
811 len += snprintf(buf + len, sizeof(smi->buf) - len,
812 "VLAN %d: Ports: '", vlan4k.vid);
814 for (i = 0; i < smi->num_ports; i++) {
815 if (!(vlan4k.member & (1 << i)))
818 len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
819 (vlan4k.untag & (1 << i)) ? "" : "t");
822 len += snprintf(buf + len, sizeof(smi->buf) - len,
823 "', members=%04x, untag=%04x, fid=%u",
824 vlan4k.member, vlan4k.untag, vlan4k.fid);
831 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
833 int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
835 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
836 struct switch_port *port;
837 struct rtl8366_vlan_4k vlan4k;
840 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
843 smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
845 port = &val->value.ports[0];
847 for (i = 0; i < smi->num_ports; i++) {
848 if (!(vlan4k.member & BIT(i)))
852 port->flags = (vlan4k.untag & BIT(i)) ?
853 0 : BIT(SWITCH_PORT_FLAG_TAGGED);
859 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
861 int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
863 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
864 struct switch_port *port;
869 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
872 port = &val->value.ports[0];
873 for (i = 0; i < val->len; i++, port++) {
874 member |= BIT(port->id);
876 if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
877 untag |= BIT(port->id);
880 return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
882 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
884 struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
886 struct rtl8366_smi *smi;
890 smi = kzalloc(sizeof(*smi), GFP_KERNEL);
892 dev_err(parent, "no memory for private data\n");
896 smi->parent = parent;
899 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
901 int rtl8366_smi_init(struct rtl8366_smi *smi)
908 err = gpio_request(smi->gpio_sda, dev_name(smi->parent));
910 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
915 err = gpio_request(smi->gpio_sck, dev_name(smi->parent));
917 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
922 spin_lock_init(&smi->lock);
924 dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
925 smi->gpio_sda, smi->gpio_sck);
927 err = smi->ops->detect(smi);
929 dev_err(smi->parent, "chip detection failed, err=%d\n", err);
933 err = smi->ops->setup(smi);
935 dev_err(smi->parent, "chip setup failed, err=%d\n", err);
939 err = rtl8366_smi_mii_init(smi);
943 rtl8366_debugfs_init(smi);
948 gpio_free(smi->gpio_sck);
950 gpio_free(smi->gpio_sda);
954 EXPORT_SYMBOL_GPL(rtl8366_smi_init);
956 void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
958 rtl8366_debugfs_remove(smi);
959 rtl8366_smi_mii_cleanup(smi);
960 gpio_free(smi->gpio_sck);
961 gpio_free(smi->gpio_sda);
963 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
965 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
966 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
967 MODULE_LICENSE("GPL v2");