summaryrefslogtreecommitdiffstats
path: root/target/linux/ramips/patches-4.4/0505-net-next-mediatek-add-support-for-rt2880.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/ramips/patches-4.4/0505-net-next-mediatek-add-support-for-rt2880.patch')
-rw-r--r--target/linux/ramips/patches-4.4/0505-net-next-mediatek-add-support-for-rt2880.patch351
1 files changed, 351 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-4.4/0505-net-next-mediatek-add-support-for-rt2880.patch b/target/linux/ramips/patches-4.4/0505-net-next-mediatek-add-support-for-rt2880.patch
new file mode 100644
index 0000000000..8ed00e38a6
--- /dev/null
+++ b/target/linux/ramips/patches-4.4/0505-net-next-mediatek-add-support-for-rt2880.patch
@@ -0,0 +1,351 @@
+From f8c8f4bd2a13e0cc060c93812377373d436f7f02 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Wed, 18 Nov 2015 03:13:05 +0100
+Subject: [PATCH 505/513] net-next: mediatek: add support for rt2880
+
+rt2880 is the oldest SoC with this core. It has a single gBit port that will
+normally be attached to an external phy of switch. The patch also adds the
+code required to drive the mdio bus.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+Signed-off-by: Michael Lee <igvtee@gmail.com>
+---
+ drivers/net/ethernet/mediatek/mdio_rt2880.c | 222 +++++++++++++++++++++++++++
+ drivers/net/ethernet/mediatek/mdio_rt2880.h | 23 +++
+ drivers/net/ethernet/mediatek/soc_rt2880.c | 76 +++++++++
+ 3 files changed, 321 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/mdio_rt2880.c
+ create mode 100644 drivers/net/ethernet/mediatek/mdio_rt2880.h
+ create mode 100644 drivers/net/ethernet/mediatek/soc_rt2880.c
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mdio_rt2880.c
+@@ -0,0 +1,222 @@
++/* This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; version 2 of the License
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * Copyright (C) 2009-2015 John Crispin <blogic@openwrt.org>
++ * Copyright (C) 2009-2015 Felix Fietkau <nbd@openwrt.org>
++ * Copyright (C) 2013-2015 Michael Lee <igvtee@gmail.com>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/of_net.h>
++#include <linux/of_mdio.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio_rt2880.h"
++#include "mdio.h"
++
++#define FE_MDIO_RETRY 1000
++
++static unsigned char *rt2880_speed_str(struct fe_priv *priv)
++{
++ switch (priv->phy->speed[0]) {
++ case SPEED_1000:
++ return "1000";
++ case SPEED_100:
++ return "100";
++ case SPEED_10:
++ return "10";
++ }
++
++ return "?";
++}
++
++void rt2880_mdio_link_adjust(struct fe_priv *priv, int port)
++{
++ u32 mdio_cfg;
++
++ if (!priv->link[0]) {
++ netif_carrier_off(priv->netdev);
++ netdev_info(priv->netdev, "link down\n");
++ return;
++ }
++
++ mdio_cfg = FE_MDIO_CFG_TX_CLK_SKEW_200 |
++ FE_MDIO_CFG_RX_CLK_SKEW_200 |
++ FE_MDIO_CFG_GP1_FRC_EN;
++
++ if (priv->phy->duplex[0] == DUPLEX_FULL)
++ mdio_cfg |= FE_MDIO_CFG_GP1_DUPLEX;
++
++ if (priv->phy->tx_fc[0])
++ mdio_cfg |= FE_MDIO_CFG_GP1_FC_TX;
++
++ if (priv->phy->rx_fc[0])
++ mdio_cfg |= FE_MDIO_CFG_GP1_FC_RX;
++
++ switch (priv->phy->speed[0]) {
++ case SPEED_10:
++ mdio_cfg |= FE_MDIO_CFG_GP1_SPEED_10;
++ break;
++ case SPEED_100:
++ mdio_cfg |= FE_MDIO_CFG_GP1_SPEED_100;
++ break;
++ case SPEED_1000:
++ mdio_cfg |= FE_MDIO_CFG_GP1_SPEED_1000;
++ break;
++ default:
++ BUG();
++ }
++
++ fe_w32(mdio_cfg, FE_MDIO_CFG);
++
++ netif_carrier_on(priv->netdev);
++ netdev_info(priv->netdev, "link up (%sMbps/%s duplex)\n",
++ rt2880_speed_str(priv),
++ (priv->phy->duplex[0] == DUPLEX_FULL) ? "Full" : "Half");
++}
++
++static int rt2880_mdio_wait_ready(struct fe_priv *priv)
++{
++ int retries;
++
++ retries = FE_MDIO_RETRY;
++ while (1) {
++ u32 t;
++
++ t = fe_r32(FE_MDIO_ACCESS);
++ if ((t & BIT(31)) == 0)
++ return 0;
++
++ if (retries-- == 0)
++ break;
++
++ udelay(1);
++ }
++
++ dev_err(priv->device, "MDIO operation timed out\n");
++ return -ETIMEDOUT;
++}
++
++int rt2880_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg)
++{
++ struct fe_priv *priv = bus->priv;
++ int err;
++ u32 t;
++
++ err = rt2880_mdio_wait_ready(priv);
++ if (err)
++ return 0xffff;
++
++ t = (phy_addr << 24) | (phy_reg << 16);
++ fe_w32(t, FE_MDIO_ACCESS);
++ t |= BIT(31);
++ fe_w32(t, FE_MDIO_ACCESS);
++
++ err = rt2880_mdio_wait_ready(priv);
++ if (err)
++ return 0xffff;
++
++ pr_debug("%s: addr=%04x, reg=%04x, value=%04x\n", __func__,
++ phy_addr, phy_reg, fe_r32(FE_MDIO_ACCESS) & 0xffff);
++
++ return fe_r32(FE_MDIO_ACCESS) & 0xffff;
++}
++
++int rt2880_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val)
++{
++ struct fe_priv *priv = bus->priv;
++ int err;
++ u32 t;
++
++ pr_debug("%s: addr=%04x, reg=%04x, value=%04x\n", __func__,
++ phy_addr, phy_reg, fe_r32(FE_MDIO_ACCESS) & 0xffff);
++
++ err = rt2880_mdio_wait_ready(priv);
++ if (err)
++ return err;
++
++ t = (1 << 30) | (phy_addr << 24) | (phy_reg << 16) | val;
++ fe_w32(t, FE_MDIO_ACCESS);
++ t |= BIT(31);
++ fe_w32(t, FE_MDIO_ACCESS);
++
++ return rt2880_mdio_wait_ready(priv);
++}
++
++void rt2880_port_init(struct fe_priv *priv, struct device_node *np)
++{
++ const __be32 *id = of_get_property(np, "reg", NULL);
++ const __be32 *link;
++ int size;
++ int phy_mode;
++
++ if (!id || (be32_to_cpu(*id) != 0)) {
++ pr_err("%s: invalid port id\n", np->name);
++ return;
++ }
++
++ priv->phy->phy_fixed[0] = of_get_property(np,
++ "mediatek,fixed-link", &size);
++ if (priv->phy->phy_fixed[0] &&
++ (size != (4 * sizeof(*priv->phy->phy_fixed[0])))) {
++ pr_err("%s: invalid fixed link property\n", np->name);
++ priv->phy->phy_fixed[0] = NULL;
++ return;
++ }
++
++ phy_mode = of_get_phy_mode(np);
++ switch (phy_mode) {
++ case PHY_INTERFACE_MODE_RGMII:
++ break;
++ case PHY_INTERFACE_MODE_MII:
++ break;
++ case PHY_INTERFACE_MODE_RMII:
++ break;
++ default:
++ if (!priv->phy->phy_fixed[0])
++ dev_err(priv->device, "port %d - invalid phy mode\n",
++ priv->phy->speed[0]);
++ break;
++ }
++
++ priv->phy->phy_node[0] = of_parse_phandle(np, "phy-handle", 0);
++ if (!priv->phy->phy_node[0] && !priv->phy->phy_fixed[0])
++ return;
++
++ if (priv->phy->phy_fixed[0]) {
++ link = priv->phy->phy_fixed[0];
++ priv->phy->speed[0] = be32_to_cpup(link++);
++ priv->phy->duplex[0] = be32_to_cpup(link++);
++ priv->phy->tx_fc[0] = be32_to_cpup(link++);
++ priv->phy->rx_fc[0] = be32_to_cpup(link++);
++
++ priv->link[0] = 1;
++ switch (priv->phy->speed[0]) {
++ case SPEED_10:
++ break;
++ case SPEED_100:
++ break;
++ case SPEED_1000:
++ break;
++ default:
++ dev_err(priv->device, "invalid link speed: %d\n",
++ priv->phy->speed[0]);
++ priv->phy->phy_fixed[0] = 0;
++ return;
++ }
++ dev_info(priv->device, "using fixed link parameters\n");
++ rt2880_mdio_link_adjust(priv, 0);
++ return;
++ }
++
++ if (priv->phy->phy_node[0] && priv->mii_bus->phy_map[0])
++ fe_connect_phy_node(priv, priv->phy->phy_node[0]);
++}
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mdio_rt2880.h
+@@ -0,0 +1,23 @@
++/* This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; version 2 of the License
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * Copyright (C) 2009-2015 John Crispin <blogic@openwrt.org>
++ * Copyright (C) 2009-2015 Felix Fietkau <nbd@openwrt.org>
++ * Copyright (C) 2013-2015 Michael Lee <igvtee@gmail.com>
++ */
++
++#ifndef _RALINK_MDIO_RT2880_H__
++#define _RALINK_MDIO_RT2880_H__
++
++void rt2880_mdio_link_adjust(struct fe_priv *priv, int port);
++int rt2880_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg);
++int rt2880_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val);
++void rt2880_port_init(struct fe_priv *priv, struct device_node *np);
++
++#endif
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/soc_rt2880.c
+@@ -0,0 +1,76 @@
++/* This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; version 2 of the License
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * Copyright (C) 2009-2015 John Crispin <blogic@openwrt.org>
++ * Copyright (C) 2009-2015 Felix Fietkau <nbd@openwrt.org>
++ * Copyright (C) 2013-2015 Michael Lee <igvtee@gmail.com>
++ */
++
++#include <linux/module.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio_rt2880.h"
++
++#define RT2880_RESET_FE BIT(18)
++
++static void rt2880_init_data(struct fe_soc_data *data,
++ struct net_device *netdev)
++{
++ struct fe_priv *priv = netdev_priv(netdev);
++
++ priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
++ FE_FLAG_JUMBO_FRAME | FE_FLAG_CALIBRATE_CLK;
++ netdev->hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_TX;
++ /* this should work according to the datasheet but actually does not*/
++ /* netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; */
++}
++
++void rt2880_fe_reset(void)
++{
++ fe_reset(RT2880_RESET_FE);
++}
++
++static int rt2880_fwd_config(struct fe_priv *priv)
++{
++ int ret;
++
++ ret = fe_set_clock_cycle(priv);
++ if (ret)
++ return ret;
++
++ fe_fwd_config(priv);
++ fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
++ fe_csum_config(priv);
++
++ return ret;
++}
++
++struct fe_soc_data rt2880_data = {
++ .init_data = rt2880_init_data,
++ .reset_fe = rt2880_fe_reset,
++ .fwd_config = rt2880_fwd_config,
++ .pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
++ .checksum_bit = RX_DMA_L4VALID,
++ .rx_int = FE_RX_DONE_INT,
++ .tx_int = FE_TX_DONE_INT,
++ .status_int = FE_CNT_GDM_AF,
++ .mdio_read = rt2880_mdio_read,
++ .mdio_write = rt2880_mdio_write,
++ .mdio_adjust_link = rt2880_mdio_link_adjust,
++ .port_init = rt2880_port_init,
++};
++
++const struct of_device_id of_fe_match[] = {
++ { .compatible = "ralink,rt2880-eth", .data = &rt2880_data },
++ {},
++};
++
++MODULE_DEVICE_TABLE(of, of_fe_match);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-27 12:44:09 +0000