1450 lines
31 KiB
C
1450 lines
31 KiB
C
/*
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* Realtek RTL8366 SMI interface driver
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*
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* Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/spinlock.h>
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#include <linux/skbuff.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/of_gpio.h>
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#include <linux/rtl8366.h>
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#ifdef CONFIG_RTL8366_SMI_DEBUG_FS
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#include <linux/debugfs.h>
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#endif
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#include "rtl8366_smi.h"
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#define RTL8366_SMI_ACK_RETRY_COUNT 5
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#define RTL8366_SMI_HW_STOP_DELAY 25 /* msecs */
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#define RTL8366_SMI_HW_START_DELAY 100 /* msecs */
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static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
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{
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ndelay(smi->clk_delay);
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}
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static void rtl8366_smi_start(struct rtl8366_smi *smi)
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{
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unsigned int sda = smi->gpio_sda;
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unsigned int sck = smi->gpio_sck;
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/*
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* Set GPIO pins to output mode, with initial state:
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* SCK = 0, SDA = 1
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*/
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gpio_direction_output(sck, 0);
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gpio_direction_output(sda, 1);
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rtl8366_smi_clk_delay(smi);
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/* CLK 1: 0 -> 1, 1 -> 0 */
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gpio_set_value(sck, 1);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 0);
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rtl8366_smi_clk_delay(smi);
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/* CLK 2: */
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gpio_set_value(sck, 1);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sda, 0);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 0);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sda, 1);
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}
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static void rtl8366_smi_stop(struct rtl8366_smi *smi)
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{
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unsigned int sda = smi->gpio_sda;
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unsigned int sck = smi->gpio_sck;
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sda, 0);
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gpio_set_value(sck, 1);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sda, 1);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 1);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 0);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 1);
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/* add a click */
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 0);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 1);
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/* set GPIO pins to input mode */
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gpio_direction_input(sda);
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gpio_direction_input(sck);
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}
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static void rtl8366_smi_write_bits(struct rtl8366_smi *smi, u32 data, u32 len)
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{
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unsigned int sda = smi->gpio_sda;
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unsigned int sck = smi->gpio_sck;
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for (; len > 0; len--) {
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rtl8366_smi_clk_delay(smi);
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/* prepare data */
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gpio_set_value(sda, !!(data & ( 1 << (len - 1))));
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rtl8366_smi_clk_delay(smi);
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/* clocking */
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gpio_set_value(sck, 1);
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rtl8366_smi_clk_delay(smi);
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gpio_set_value(sck, 0);
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}
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}
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static void rtl8366_smi_read_bits(struct rtl8366_smi *smi, u32 len, u32 *data)
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{
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unsigned int sda = smi->gpio_sda;
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unsigned int sck = smi->gpio_sck;
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gpio_direction_input(sda);
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for (*data = 0; len > 0; len--) {
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u32 u;
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rtl8366_smi_clk_delay(smi);
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/* clocking */
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gpio_set_value(sck, 1);
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rtl8366_smi_clk_delay(smi);
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u = !!gpio_get_value(sda);
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gpio_set_value(sck, 0);
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*data |= (u << (len - 1));
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}
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gpio_direction_output(sda, 0);
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}
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static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
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{
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int retry_cnt;
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retry_cnt = 0;
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do {
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u32 ack;
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rtl8366_smi_read_bits(smi, 1, &ack);
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if (ack == 0)
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break;
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if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT) {
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dev_err(smi->parent, "ACK timeout\n");
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return -ETIMEDOUT;
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}
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} while (1);
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return 0;
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}
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static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
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{
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rtl8366_smi_write_bits(smi, data, 8);
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return rtl8366_smi_wait_for_ack(smi);
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}
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static int rtl8366_smi_write_byte_noack(struct rtl8366_smi *smi, u8 data)
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{
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rtl8366_smi_write_bits(smi, data, 8);
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return 0;
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}
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static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
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{
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u32 t;
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/* read data */
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rtl8366_smi_read_bits(smi, 8, &t);
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*data = (t & 0xff);
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/* send an ACK */
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rtl8366_smi_write_bits(smi, 0x00, 1);
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return 0;
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}
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static int rtl8366_smi_read_byte1(struct rtl8366_smi *smi, u8 *data)
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{
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u32 t;
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/* read data */
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rtl8366_smi_read_bits(smi, 8, &t);
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*data = (t & 0xff);
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/* send an ACK */
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rtl8366_smi_write_bits(smi, 0x01, 1);
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return 0;
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}
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int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
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{
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unsigned long flags;
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u8 lo = 0;
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u8 hi = 0;
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int ret;
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spin_lock_irqsave(&smi->lock, flags);
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rtl8366_smi_start(smi);
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/* send READ command */
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ret = rtl8366_smi_write_byte(smi, smi->cmd_read);
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if (ret)
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goto out;
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/* set ADDR[7:0] */
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ret = rtl8366_smi_write_byte(smi, addr & 0xff);
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if (ret)
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goto out;
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/* set ADDR[15:8] */
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ret = rtl8366_smi_write_byte(smi, addr >> 8);
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if (ret)
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goto out;
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/* read DATA[7:0] */
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rtl8366_smi_read_byte0(smi, &lo);
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/* read DATA[15:8] */
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rtl8366_smi_read_byte1(smi, &hi);
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*data = ((u32) lo) | (((u32) hi) << 8);
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ret = 0;
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out:
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rtl8366_smi_stop(smi);
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spin_unlock_irqrestore(&smi->lock, flags);
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return ret;
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}
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EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
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static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
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u32 addr, u32 data, bool ack)
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{
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&smi->lock, flags);
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rtl8366_smi_start(smi);
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/* send WRITE command */
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ret = rtl8366_smi_write_byte(smi, smi->cmd_write);
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if (ret)
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goto out;
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/* set ADDR[7:0] */
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ret = rtl8366_smi_write_byte(smi, addr & 0xff);
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if (ret)
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goto out;
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/* set ADDR[15:8] */
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ret = rtl8366_smi_write_byte(smi, addr >> 8);
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if (ret)
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goto out;
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/* write DATA[7:0] */
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ret = rtl8366_smi_write_byte(smi, data & 0xff);
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if (ret)
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goto out;
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/* write DATA[15:8] */
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if (ack)
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ret = rtl8366_smi_write_byte(smi, data >> 8);
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else
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ret = rtl8366_smi_write_byte_noack(smi, data >> 8);
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if (ret)
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goto out;
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ret = 0;
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out:
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rtl8366_smi_stop(smi);
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spin_unlock_irqrestore(&smi->lock, flags);
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return ret;
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}
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int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
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{
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return __rtl8366_smi_write_reg(smi, addr, data, true);
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}
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EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
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int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data)
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{
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return __rtl8366_smi_write_reg(smi, addr, data, false);
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}
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EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack);
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int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
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{
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u32 t;
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int err;
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err = rtl8366_smi_read_reg(smi, addr, &t);
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if (err)
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return err;
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err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
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return err;
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}
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EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
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static int rtl8366_reset(struct rtl8366_smi *smi)
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{
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if (smi->hw_reset) {
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smi->hw_reset(true);
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msleep(RTL8366_SMI_HW_STOP_DELAY);
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smi->hw_reset(false);
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msleep(RTL8366_SMI_HW_START_DELAY);
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return 0;
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}
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return smi->ops->reset_chip(smi);
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}
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static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
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{
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int err;
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int i;
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*used = 0;
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for (i = 0; i < smi->num_ports; i++) {
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int index = 0;
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err = smi->ops->get_mc_index(smi, i, &index);
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if (err)
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return err;
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if (mc_index == index) {
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*used = 1;
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break;
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}
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}
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return 0;
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}
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static int rtl8366_set_vlan(struct rtl8366_smi *smi, int vid, u32 member,
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u32 untag, u32 fid)
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{
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struct rtl8366_vlan_4k vlan4k;
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int err;
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int i;
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/* Update the 4K table */
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err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
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if (err)
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return err;
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vlan4k.member = member;
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vlan4k.untag = untag;
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vlan4k.fid = fid;
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err = smi->ops->set_vlan_4k(smi, &vlan4k);
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if (err)
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return err;
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/* Try to find an existing MC entry for this VID */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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struct rtl8366_vlan_mc vlanmc;
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err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
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if (err)
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return err;
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if (vid == vlanmc.vid) {
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/* update the MC entry */
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vlanmc.member = member;
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vlanmc.untag = untag;
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vlanmc.fid = fid;
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err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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break;
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}
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}
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return err;
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}
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static int rtl8366_get_pvid(struct rtl8366_smi *smi, int port, int *val)
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{
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struct rtl8366_vlan_mc vlanmc;
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int err;
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int index;
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err = smi->ops->get_mc_index(smi, port, &index);
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if (err)
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return err;
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err = smi->ops->get_vlan_mc(smi, index, &vlanmc);
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if (err)
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return err;
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*val = vlanmc.vid;
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return 0;
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}
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static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
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unsigned vid)
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{
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struct rtl8366_vlan_mc vlanmc;
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struct rtl8366_vlan_4k vlan4k;
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int err;
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int i;
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/* Try to find an existing MC entry for this VID */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
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if (err)
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return err;
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if (vid == vlanmc.vid) {
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err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (err)
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return err;
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err = smi->ops->set_mc_index(smi, port, i);
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return err;
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}
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}
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/* We have no MC entry for this VID, try to find an empty one */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
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if (err)
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return err;
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if (vlanmc.vid == 0 && vlanmc.member == 0) {
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/* Update the entry from the 4K table */
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err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
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if (err)
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return err;
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vlanmc.vid = vid;
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vlanmc.member = vlan4k.member;
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vlanmc.untag = vlan4k.untag;
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vlanmc.fid = vlan4k.fid;
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err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (err)
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return err;
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err = smi->ops->set_mc_index(smi, port, i);
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return err;
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}
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}
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/* MC table is full, try to find an unused entry and replace it */
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for (i = 0; i < smi->num_vlan_mc; i++) {
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int used;
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err = rtl8366_mc_is_used(smi, i, &used);
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if (err)
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return err;
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if (!used) {
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/* Update the entry from the 4K table */
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err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
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if (err)
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return err;
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vlanmc.vid = vid;
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vlanmc.member = vlan4k.member;
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vlanmc.untag = vlan4k.untag;
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vlanmc.fid = vlan4k.fid;
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err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
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if (err)
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return err;
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err = smi->ops->set_mc_index(smi, port, i);
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return err;
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}
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}
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dev_err(smi->parent,
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"all VLAN member configurations are in use\n");
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return -ENOSPC;
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}
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int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
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{
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int err;
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err = smi->ops->enable_vlan(smi, enable);
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if (err)
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return err;
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smi->vlan_enabled = enable;
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if (!enable) {
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smi->vlan4k_enabled = 0;
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err = smi->ops->enable_vlan4k(smi, enable);
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
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static int rtl8366_enable_vlan4k(struct rtl8366_smi *smi, int enable)
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{
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int err;
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if (enable) {
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err = smi->ops->enable_vlan(smi, enable);
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if (err)
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return err;
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smi->vlan_enabled = enable;
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}
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err = smi->ops->enable_vlan4k(smi, enable);
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if (err)
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return err;
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|
smi->vlan4k_enabled = enable;
|
|
return 0;
|
|
}
|
|
|
|
int rtl8366_enable_all_ports(struct rtl8366_smi *smi, int enable)
|
|
{
|
|
int port;
|
|
int err;
|
|
|
|
for (port = 0; port < smi->num_ports; port++) {
|
|
err = smi->ops->enable_port(smi, port, enable);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_enable_all_ports);
|
|
|
|
int rtl8366_reset_vlan(struct rtl8366_smi *smi)
|
|
{
|
|
struct rtl8366_vlan_mc vlanmc;
|
|
int err;
|
|
int i;
|
|
|
|
rtl8366_enable_vlan(smi, 0);
|
|
rtl8366_enable_vlan4k(smi, 0);
|
|
|
|
/* clear VLAN member configurations */
|
|
vlanmc.vid = 0;
|
|
vlanmc.priority = 0;
|
|
vlanmc.member = 0;
|
|
vlanmc.untag = 0;
|
|
vlanmc.fid = 0;
|
|
for (i = 0; i < smi->num_vlan_mc; i++) {
|
|
err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
|
|
|
|
static int rtl8366_init_vlan(struct rtl8366_smi *smi)
|
|
{
|
|
int port;
|
|
int err;
|
|
|
|
err = rtl8366_reset_vlan(smi);
|
|
if (err)
|
|
return err;
|
|
|
|
for (port = 0; port < smi->num_ports; port++) {
|
|
u32 mask;
|
|
|
|
if (port == smi->cpu_port)
|
|
mask = (1 << smi->num_ports) - 1;
|
|
else
|
|
mask = (1 << port) | (1 << smi->cpu_port);
|
|
|
|
err = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
|
|
if (err)
|
|
return err;
|
|
|
|
err = rtl8366_set_pvid(smi, port, (port + 1));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return rtl8366_enable_vlan(smi, 1);
|
|
}
|
|
|
|
#ifdef CONFIG_RTL8366_SMI_DEBUG_FS
|
|
int rtl8366_debugfs_open(struct inode *inode, struct file *file)
|
|
{
|
|
file->private_data = inode->i_private;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
|
|
|
|
static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
|
|
char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
|
|
int i, len = 0;
|
|
char *buf = smi->buf;
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%2s %6s %4s %6s %6s %3s\n",
|
|
"id", "vid","prio", "member", "untag", "fid");
|
|
|
|
for (i = 0; i < smi->num_vlan_mc; ++i) {
|
|
struct rtl8366_vlan_mc vlanmc;
|
|
|
|
smi->ops->get_vlan_mc(smi, i, &vlanmc);
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%2d %6d %4d 0x%04x 0x%04x %3d\n",
|
|
i, vlanmc.vid, vlanmc.priority,
|
|
vlanmc.member, vlanmc.untag, vlanmc.fid);
|
|
}
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
}
|
|
|
|
#define RTL8366_VLAN4K_PAGE_SIZE 64
|
|
#define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
|
|
|
|
static ssize_t rtl8366_read_debugfs_vlan_4k(struct file *file,
|
|
char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
|
|
int i, len = 0;
|
|
int offset;
|
|
char *buf = smi->buf;
|
|
|
|
if (smi->dbg_vlan_4k_page >= RTL8366_VLAN4K_NUM_PAGES) {
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"invalid page: %u\n", smi->dbg_vlan_4k_page);
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
}
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%4s %6s %6s %3s\n",
|
|
"vid", "member", "untag", "fid");
|
|
|
|
offset = RTL8366_VLAN4K_PAGE_SIZE * smi->dbg_vlan_4k_page;
|
|
for (i = 0; i < RTL8366_VLAN4K_PAGE_SIZE; i++) {
|
|
struct rtl8366_vlan_4k vlan4k;
|
|
|
|
smi->ops->get_vlan_4k(smi, offset + i, &vlan4k);
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%4d 0x%04x 0x%04x %3d\n",
|
|
vlan4k.vid, vlan4k.member,
|
|
vlan4k.untag, vlan4k.fid);
|
|
}
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
}
|
|
|
|
static ssize_t rtl8366_read_debugfs_pvid(struct file *file,
|
|
char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
|
|
char *buf = smi->buf;
|
|
int len = 0;
|
|
int i;
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len, "%4s %4s\n",
|
|
"port", "pvid");
|
|
|
|
for (i = 0; i < smi->num_ports; i++) {
|
|
int pvid;
|
|
int err;
|
|
|
|
err = rtl8366_get_pvid(smi, i, &pvid);
|
|
if (err)
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%4d error\n", i);
|
|
else
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%4d %4d\n", i, pvid);
|
|
}
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
}
|
|
|
|
static ssize_t rtl8366_read_debugfs_reg(struct file *file,
|
|
char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
|
|
u32 t, reg = smi->dbg_reg;
|
|
int err, len = 0;
|
|
char *buf = smi->buf;
|
|
|
|
memset(buf, '\0', sizeof(smi->buf));
|
|
|
|
err = rtl8366_smi_read_reg(smi, reg, &t);
|
|
if (err) {
|
|
len += snprintf(buf, sizeof(smi->buf),
|
|
"Read failed (reg: 0x%04x)\n", reg);
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
}
|
|
|
|
len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
|
|
reg, t);
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
}
|
|
|
|
static ssize_t rtl8366_write_debugfs_reg(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
|
|
unsigned long data;
|
|
u32 reg = smi->dbg_reg;
|
|
int err;
|
|
size_t len;
|
|
char *buf = smi->buf;
|
|
|
|
len = min(count, sizeof(smi->buf) - 1);
|
|
if (copy_from_user(buf, user_buf, len)) {
|
|
dev_err(smi->parent, "copy from user failed\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
buf[len] = '\0';
|
|
if (len > 0 && buf[len - 1] == '\n')
|
|
buf[len - 1] = '\0';
|
|
|
|
|
|
if (strict_strtoul(buf, 16, &data)) {
|
|
dev_err(smi->parent, "Invalid reg value %s\n", buf);
|
|
} else {
|
|
err = rtl8366_smi_write_reg(smi, reg, data);
|
|
if (err) {
|
|
dev_err(smi->parent,
|
|
"writing reg 0x%04x val 0x%04lx failed\n",
|
|
reg, data);
|
|
}
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
|
|
char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct rtl8366_smi *smi = file->private_data;
|
|
int i, j, len = 0;
|
|
char *buf = smi->buf;
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
|
|
"Counter");
|
|
|
|
for (i = 0; i < smi->num_ports; i++) {
|
|
char port_buf[10];
|
|
|
|
snprintf(port_buf, sizeof(port_buf), "Port %d", i);
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
|
|
port_buf);
|
|
}
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
|
|
|
|
for (i = 0; i < smi->num_mib_counters; i++) {
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
|
|
smi->mib_counters[i].name);
|
|
for (j = 0; j < smi->num_ports; j++) {
|
|
unsigned long long counter = 0;
|
|
|
|
if (!smi->ops->get_mib_counter(smi, i, j, &counter))
|
|
len += snprintf(buf + len,
|
|
sizeof(smi->buf) - len,
|
|
"%12llu ", counter);
|
|
else
|
|
len += snprintf(buf + len,
|
|
sizeof(smi->buf) - len,
|
|
"%12s ", "error");
|
|
}
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
|
|
}
|
|
|
|
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
|
|
}
|
|
|
|
static const struct file_operations fops_rtl8366_regs = {
|
|
.read = rtl8366_read_debugfs_reg,
|
|
.write = rtl8366_write_debugfs_reg,
|
|
.open = rtl8366_debugfs_open,
|
|
.owner = THIS_MODULE
|
|
};
|
|
|
|
static const struct file_operations fops_rtl8366_vlan_mc = {
|
|
.read = rtl8366_read_debugfs_vlan_mc,
|
|
.open = rtl8366_debugfs_open,
|
|
.owner = THIS_MODULE
|
|
};
|
|
|
|
static const struct file_operations fops_rtl8366_vlan_4k = {
|
|
.read = rtl8366_read_debugfs_vlan_4k,
|
|
.open = rtl8366_debugfs_open,
|
|
.owner = THIS_MODULE
|
|
};
|
|
|
|
static const struct file_operations fops_rtl8366_pvid = {
|
|
.read = rtl8366_read_debugfs_pvid,
|
|
.open = rtl8366_debugfs_open,
|
|
.owner = THIS_MODULE
|
|
};
|
|
|
|
static const struct file_operations fops_rtl8366_mibs = {
|
|
.read = rtl8366_read_debugfs_mibs,
|
|
.open = rtl8366_debugfs_open,
|
|
.owner = THIS_MODULE
|
|
};
|
|
|
|
static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
|
|
{
|
|
struct dentry *node;
|
|
struct dentry *root;
|
|
|
|
if (!smi->debugfs_root)
|
|
smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
|
|
NULL);
|
|
|
|
if (!smi->debugfs_root) {
|
|
dev_err(smi->parent, "Unable to create debugfs dir\n");
|
|
return;
|
|
}
|
|
root = smi->debugfs_root;
|
|
|
|
node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
|
|
&smi->dbg_reg);
|
|
if (!node) {
|
|
dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
|
|
"reg");
|
|
return;
|
|
}
|
|
|
|
node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
|
|
&fops_rtl8366_regs);
|
|
if (!node) {
|
|
dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
|
|
"val");
|
|
return;
|
|
}
|
|
|
|
node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
|
|
&fops_rtl8366_vlan_mc);
|
|
if (!node) {
|
|
dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
|
|
"vlan_mc");
|
|
return;
|
|
}
|
|
|
|
node = debugfs_create_u8("vlan_4k_page", S_IRUGO | S_IWUSR, root,
|
|
&smi->dbg_vlan_4k_page);
|
|
if (!node) {
|
|
dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
|
|
"vlan_4k_page");
|
|
return;
|
|
}
|
|
|
|
node = debugfs_create_file("vlan_4k", S_IRUSR, root, smi,
|
|
&fops_rtl8366_vlan_4k);
|
|
if (!node) {
|
|
dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
|
|
"vlan_4k");
|
|
return;
|
|
}
|
|
|
|
node = debugfs_create_file("pvid", S_IRUSR, root, smi,
|
|
&fops_rtl8366_pvid);
|
|
if (!node) {
|
|
dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
|
|
"pvid");
|
|
return;
|
|
}
|
|
|
|
node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
|
|
&fops_rtl8366_mibs);
|
|
if (!node)
|
|
dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
|
|
"mibs");
|
|
}
|
|
|
|
static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
|
|
{
|
|
if (smi->debugfs_root) {
|
|
debugfs_remove_recursive(smi->debugfs_root);
|
|
smi->debugfs_root = NULL;
|
|
}
|
|
}
|
|
#else
|
|
static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
|
|
static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
|
|
#endif /* CONFIG_RTL8366_SMI_DEBUG_FS */
|
|
|
|
static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
|
|
{
|
|
int ret;
|
|
int i;
|
|
|
|
smi->mii_bus = mdiobus_alloc();
|
|
if (smi->mii_bus == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
smi->mii_bus->priv = (void *) smi;
|
|
smi->mii_bus->name = dev_name(smi->parent);
|
|
smi->mii_bus->read = smi->ops->mii_read;
|
|
smi->mii_bus->write = smi->ops->mii_write;
|
|
snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
|
|
dev_name(smi->parent));
|
|
smi->mii_bus->parent = smi->parent;
|
|
smi->mii_bus->phy_mask = ~(0x1f);
|
|
smi->mii_bus->irq = smi->mii_irq;
|
|
for (i = 0; i < PHY_MAX_ADDR; i++)
|
|
smi->mii_irq[i] = PHY_POLL;
|
|
|
|
ret = mdiobus_register(smi->mii_bus);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
return 0;
|
|
|
|
err_free:
|
|
mdiobus_free(smi->mii_bus);
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
|
|
{
|
|
mdiobus_unregister(smi->mii_bus);
|
|
mdiobus_free(smi->mii_bus);
|
|
}
|
|
|
|
int rtl8366_sw_reset_switch(struct switch_dev *dev)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
int err;
|
|
|
|
err = rtl8366_reset(smi);
|
|
if (err)
|
|
return err;
|
|
|
|
err = smi->ops->setup(smi);
|
|
if (err)
|
|
return err;
|
|
|
|
err = rtl8366_reset_vlan(smi);
|
|
if (err)
|
|
return err;
|
|
|
|
err = rtl8366_enable_vlan(smi, 1);
|
|
if (err)
|
|
return err;
|
|
|
|
return rtl8366_enable_all_ports(smi, 1);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_reset_switch);
|
|
|
|
int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
return rtl8366_get_pvid(smi, port, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
|
|
|
|
int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
return rtl8366_set_pvid(smi, port, val);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
|
|
|
|
int rtl8366_sw_get_port_mib(struct switch_dev *dev,
|
|
const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
int i, len = 0;
|
|
unsigned long long counter = 0;
|
|
char *buf = smi->buf;
|
|
|
|
if (val->port_vlan >= smi->num_ports)
|
|
return -EINVAL;
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"Port %d MIB counters\n",
|
|
val->port_vlan);
|
|
|
|
for (i = 0; i < smi->num_mib_counters; ++i) {
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%-36s: ", smi->mib_counters[i].name);
|
|
if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
|
|
&counter))
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%llu\n", counter);
|
|
else
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"%s\n", "error");
|
|
}
|
|
|
|
val->value.s = buf;
|
|
val->len = len;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
|
|
|
|
int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
|
|
const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
int i;
|
|
u32 len = 0;
|
|
struct rtl8366_vlan_4k vlan4k;
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
char *buf = smi->buf;
|
|
int err;
|
|
|
|
if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
|
|
return -EINVAL;
|
|
|
|
memset(buf, '\0', sizeof(smi->buf));
|
|
|
|
err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
|
|
if (err)
|
|
return err;
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"VLAN %d: Ports: '", vlan4k.vid);
|
|
|
|
for (i = 0; i < smi->num_ports; i++) {
|
|
if (!(vlan4k.member & (1 << i)))
|
|
continue;
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
|
|
(vlan4k.untag & (1 << i)) ? "" : "t");
|
|
}
|
|
|
|
len += snprintf(buf + len, sizeof(smi->buf) - len,
|
|
"', members=%04x, untag=%04x, fid=%u",
|
|
vlan4k.member, vlan4k.untag, vlan4k.fid);
|
|
|
|
val->value.s = buf;
|
|
val->len = len;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
|
|
|
|
int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
struct switch_port *port;
|
|
struct rtl8366_vlan_4k vlan4k;
|
|
int i;
|
|
|
|
if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
|
|
return -EINVAL;
|
|
|
|
smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
|
|
|
|
port = &val->value.ports[0];
|
|
val->len = 0;
|
|
for (i = 0; i < smi->num_ports; i++) {
|
|
if (!(vlan4k.member & BIT(i)))
|
|
continue;
|
|
|
|
port->id = i;
|
|
port->flags = (vlan4k.untag & BIT(i)) ?
|
|
0 : BIT(SWITCH_PORT_FLAG_TAGGED);
|
|
val->len++;
|
|
port++;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
|
|
|
|
int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
struct switch_port *port;
|
|
u32 member = 0;
|
|
u32 untag = 0;
|
|
int err;
|
|
int i;
|
|
|
|
if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
|
|
return -EINVAL;
|
|
|
|
port = &val->value.ports[0];
|
|
for (i = 0; i < val->len; i++, port++) {
|
|
int pvid;
|
|
member |= BIT(port->id);
|
|
|
|
if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
|
|
untag |= BIT(port->id);
|
|
|
|
/*
|
|
* To ensure that we have a valid MC entry for this VLAN,
|
|
* initialize the port VLAN ID here.
|
|
*/
|
|
err = rtl8366_get_pvid(smi, port->id, &pvid);
|
|
if (err < 0)
|
|
return err;
|
|
if (pvid == 0) {
|
|
err = rtl8366_set_pvid(smi, port->id, val->port_vlan);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
|
|
|
|
int rtl8366_sw_get_vlan_fid(struct switch_dev *dev,
|
|
const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct rtl8366_vlan_4k vlan4k;
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
int err;
|
|
|
|
if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
|
|
return -EINVAL;
|
|
|
|
err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
|
|
if (err)
|
|
return err;
|
|
|
|
val->value.i = vlan4k.fid;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid);
|
|
|
|
int rtl8366_sw_set_vlan_fid(struct switch_dev *dev,
|
|
const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct rtl8366_vlan_4k vlan4k;
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
int err;
|
|
|
|
if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
|
|
return -EINVAL;
|
|
|
|
if (val->value.i < 0 || val->value.i > attr->max)
|
|
return -EINVAL;
|
|
|
|
err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
|
|
if (err)
|
|
return err;
|
|
|
|
return rtl8366_set_vlan(smi, val->port_vlan,
|
|
vlan4k.member,
|
|
vlan4k.untag,
|
|
val->value.i);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid);
|
|
|
|
int rtl8366_sw_get_vlan_enable(struct switch_dev *dev,
|
|
const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
|
|
if (attr->ofs > 2)
|
|
return -EINVAL;
|
|
|
|
if (attr->ofs == 1)
|
|
val->value.i = smi->vlan_enabled;
|
|
else
|
|
val->value.i = smi->vlan4k_enabled;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable);
|
|
|
|
int rtl8366_sw_set_vlan_enable(struct switch_dev *dev,
|
|
const struct switch_attr *attr,
|
|
struct switch_val *val)
|
|
{
|
|
struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
|
|
int err;
|
|
|
|
if (attr->ofs > 2)
|
|
return -EINVAL;
|
|
|
|
if (attr->ofs == 1)
|
|
err = rtl8366_enable_vlan(smi, val->value.i);
|
|
else
|
|
err = rtl8366_enable_vlan4k(smi, val->value.i);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable);
|
|
|
|
struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
|
|
{
|
|
struct rtl8366_smi *smi;
|
|
|
|
BUG_ON(!parent);
|
|
|
|
smi = kzalloc(sizeof(*smi), GFP_KERNEL);
|
|
if (!smi) {
|
|
dev_err(parent, "no memory for private data\n");
|
|
return NULL;
|
|
}
|
|
|
|
smi->parent = parent;
|
|
return smi;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
|
|
|
|
static int __rtl8366_smi_init(struct rtl8366_smi *smi, const char *name)
|
|
{
|
|
int err;
|
|
|
|
err = gpio_request(smi->gpio_sda, name);
|
|
if (err) {
|
|
printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
|
|
smi->gpio_sda, err);
|
|
goto err_out;
|
|
}
|
|
|
|
err = gpio_request(smi->gpio_sck, name);
|
|
if (err) {
|
|
printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
|
|
smi->gpio_sck, err);
|
|
goto err_free_sda;
|
|
}
|
|
|
|
spin_lock_init(&smi->lock);
|
|
|
|
/* start the switch */
|
|
if (smi->hw_reset) {
|
|
smi->hw_reset(false);
|
|
msleep(RTL8366_SMI_HW_START_DELAY);
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_free_sda:
|
|
gpio_free(smi->gpio_sda);
|
|
err_out:
|
|
return err;
|
|
}
|
|
|
|
static void __rtl8366_smi_cleanup(struct rtl8366_smi *smi)
|
|
{
|
|
if (smi->hw_reset)
|
|
smi->hw_reset(true);
|
|
|
|
gpio_free(smi->gpio_sck);
|
|
gpio_free(smi->gpio_sda);
|
|
}
|
|
|
|
enum rtl8366_type rtl8366_smi_detect(struct rtl8366_platform_data *pdata)
|
|
{
|
|
static struct rtl8366_smi smi;
|
|
enum rtl8366_type type = RTL8366_TYPE_UNKNOWN;
|
|
u32 reg = 0;
|
|
|
|
memset(&smi, 0, sizeof(smi));
|
|
smi.gpio_sda = pdata->gpio_sda;
|
|
smi.gpio_sck = pdata->gpio_sck;
|
|
smi.clk_delay = 10;
|
|
smi.cmd_read = 0xa9;
|
|
smi.cmd_write = 0xa8;
|
|
|
|
if (__rtl8366_smi_init(&smi, "rtl8366"))
|
|
goto out;
|
|
|
|
if (rtl8366_smi_read_reg(&smi, 0x5c, ®))
|
|
goto cleanup;
|
|
|
|
switch(reg) {
|
|
case 0x6027:
|
|
printk("Found an RTL8366S switch\n");
|
|
type = RTL8366_TYPE_S;
|
|
break;
|
|
case 0x5937:
|
|
printk("Found an RTL8366RB switch\n");
|
|
type = RTL8366_TYPE_RB;
|
|
break;
|
|
default:
|
|
printk("Found an Unknown RTL8366 switch (id=0x%04x)\n", reg);
|
|
break;
|
|
}
|
|
|
|
cleanup:
|
|
__rtl8366_smi_cleanup(&smi);
|
|
out:
|
|
return type;
|
|
}
|
|
|
|
int rtl8366_smi_init(struct rtl8366_smi *smi)
|
|
{
|
|
int err;
|
|
|
|
if (!smi->ops)
|
|
return -EINVAL;
|
|
|
|
err = __rtl8366_smi_init(smi, dev_name(smi->parent));
|
|
if (err)
|
|
goto err_out;
|
|
|
|
dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
|
|
smi->gpio_sda, smi->gpio_sck);
|
|
|
|
err = smi->ops->detect(smi);
|
|
if (err) {
|
|
dev_err(smi->parent, "chip detection failed, err=%d\n", err);
|
|
goto err_free_sck;
|
|
}
|
|
|
|
err = rtl8366_reset(smi);
|
|
if (err)
|
|
goto err_free_sck;
|
|
|
|
err = smi->ops->setup(smi);
|
|
if (err) {
|
|
dev_err(smi->parent, "chip setup failed, err=%d\n", err);
|
|
goto err_free_sck;
|
|
}
|
|
|
|
err = rtl8366_init_vlan(smi);
|
|
if (err) {
|
|
dev_err(smi->parent, "VLAN initialization failed, err=%d\n",
|
|
err);
|
|
goto err_free_sck;
|
|
}
|
|
|
|
err = rtl8366_enable_all_ports(smi, 1);
|
|
if (err)
|
|
goto err_free_sck;
|
|
|
|
err = rtl8366_smi_mii_init(smi);
|
|
if (err)
|
|
goto err_free_sck;
|
|
|
|
rtl8366_debugfs_init(smi);
|
|
|
|
return 0;
|
|
|
|
err_free_sck:
|
|
__rtl8366_smi_cleanup(smi);
|
|
err_out:
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_smi_init);
|
|
|
|
void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
|
|
{
|
|
rtl8366_debugfs_remove(smi);
|
|
rtl8366_smi_mii_cleanup(smi);
|
|
__rtl8366_smi_cleanup(smi);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
|
|
|
|
#ifdef CONFIG_OF
|
|
int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
|
|
{
|
|
int sck = of_get_named_gpio(pdev->dev.of_node, "gpio-sck", 0);
|
|
int sda = of_get_named_gpio(pdev->dev.of_node, "gpio-sda", 0);
|
|
|
|
if (!gpio_is_valid(sck) || !gpio_is_valid(sda)) {
|
|
dev_err(&pdev->dev, "gpios missing in devictree\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
smi->gpio_sda = sda;
|
|
smi->gpio_sck = sck;
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
static inline int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
|
|
{
|
|
struct rtl8366_platform_data *pdata = pdev->dev.platform_data;
|
|
|
|
if (!pdev->dev.platform_data) {
|
|
dev_err(&pdev->dev, "no platform data specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
smi->gpio_sda = pdata->gpio_sda;
|
|
smi->gpio_sck = pdata->gpio_sck;
|
|
smi->hw_reset = pdata->hw_reset;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
struct rtl8366_smi *rtl8366_smi_probe(struct platform_device *pdev)
|
|
{
|
|
struct rtl8366_smi *smi;
|
|
int err;
|
|
|
|
smi = rtl8366_smi_alloc(&pdev->dev);
|
|
if (!smi)
|
|
return NULL;
|
|
|
|
if (pdev->dev.of_node)
|
|
err = rtl8366_smi_probe_of(pdev, smi);
|
|
else
|
|
err = rtl8366_smi_probe_plat(pdev, smi);
|
|
|
|
if (err)
|
|
goto free_smi;
|
|
|
|
return smi;
|
|
|
|
free_smi:
|
|
kfree(smi);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rtl8366_smi_probe);
|
|
|
|
MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
|
|
MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
|
|
MODULE_LICENSE("GPL v2");
|