+++ /dev/null
-/* 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@nbd.name>
- * Copyright (C) 2013-2015 Michael Lee <igvtee@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/platform_device.h>
-#include <linux/of_device.h>
-#include <linux/of_irq.h>
-
-#include <ralink_regs.h>
-
-#include "mtk_eth_soc.h"
-#include "gsw_mt7620.h"
-
-void mtk_switch_w32(struct mt7620_gsw *gsw, u32 val, unsigned reg)
-{
- iowrite32(val, gsw->base + reg);
-}
-
-u32 mtk_switch_r32(struct mt7620_gsw *gsw, unsigned reg)
-{
- return ioread32(gsw->base + reg);
-}
-
-static irqreturn_t gsw_interrupt_mt7620(int irq, void *_priv)
-{
- struct fe_priv *priv = (struct fe_priv *)_priv;
- struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
- u32 status;
- int i, max = (gsw->port4 == PORT4_EPHY) ? (4) : (3);
-
- status = mtk_switch_r32(gsw, GSW_REG_ISR);
- if (status & PORT_IRQ_ST_CHG)
- for (i = 0; i <= max; i++) {
- u32 status = mtk_switch_r32(gsw, GSW_REG_PORT_STATUS(i));
- int link = status & 0x1;
-
- if (link != priv->link[i])
- mt7620_print_link_state(priv, i, link,
- (status >> 2) & 3,
- (status & 0x2));
-
- priv->link[i] = link;
- }
- mt7620_handle_carrier(priv);
- mtk_switch_w32(gsw, status, GSW_REG_ISR);
-
- return IRQ_HANDLED;
-}
-
-static int mt7620_mdio_mode(struct device_node *eth_node)
-{
- struct device_node *phy_node, *mdiobus_node;
- const __be32 *id;
- int ret = 0;
-
- mdiobus_node = of_get_child_by_name(eth_node, "mdio-bus");
-
- if (mdiobus_node) {
- if (of_property_read_bool(mdiobus_node, "mediatek,mdio-mode"))
- ret = 1;
-
- for_each_child_of_node(mdiobus_node, phy_node) {
- id = of_get_property(phy_node, "reg", NULL);
- if (id && (be32_to_cpu(*id) == 0x1f))
- ret = 1;
- }
-
- of_node_put(mdiobus_node);
- }
-
- return ret;
-}
-
-static void mt7620_hw_init(struct mt7620_gsw *gsw, int mdio_mode)
-{
- u32 i;
- u32 val;
- u32 is_BGA = (rt_sysc_r32(0x0c) >> 16) & 1;
-
- rt_sysc_w32(rt_sysc_r32(SYSC_REG_CFG1) | BIT(8), SYSC_REG_CFG1);
- mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_CKGCR) & ~(0x3 << 4), GSW_REG_CKGCR);
-
- /* Enable MIB stats */
- mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_MIB_CNT_EN) | (1 << 1), GSW_REG_MIB_CNT_EN);
-
- if (mdio_mode) {
- u32 val;
-
- /* turn off ephy and set phy base addr to 12 */
- mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_GPC1) |
- (0x1f << 24) | (0xc << 16),
- GSW_REG_GPC1);
-
- /* set MT7530 central align */
- val = mt7530_mdio_r32(gsw, 0x7830);
- val &= ~BIT(0);
- val |= BIT(1);
- mt7530_mdio_w32(gsw, 0x7830, val);
-
- val = mt7530_mdio_r32(gsw, 0x7a40);
- val &= ~BIT(30);
- mt7530_mdio_w32(gsw, 0x7a40, val);
-
- mt7530_mdio_w32(gsw, 0x7a78, 0x855);
- } else {
-
- if (gsw->ephy_base) {
- /* set phy base addr to ephy_base */
- mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_GPC1) |
- (gsw->ephy_base << 16),
- GSW_REG_GPC1);
- fe_reset(BIT(24)); /* Resets the Ethernet PHY block. */
- }
-
- /* global page 4 */
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 31, 0x4000);
-
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 17, 0x7444);
- if (is_BGA)
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 19, 0x0114);
- else
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 19, 0x0117);
-
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 22, 0x10cf);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 25, 0x6212);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 26, 0x0777);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 29, 0x4000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 28, 0xc077);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 24, 0x0000);
-
- /* global page 3 */
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 31, 0x3000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 17, 0x4838);
-
- /* global page 2 */
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 31, 0x2000);
- if (is_BGA) {
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 21, 0x0515);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 22, 0x0053);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 23, 0x00bf);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 24, 0x0aaf);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 25, 0x0fad);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 26, 0x0fc1);
- } else {
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 21, 0x0517);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 22, 0x0fd2);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 23, 0x00bf);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 24, 0x0aab);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 25, 0x00ae);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 26, 0x0fff);
- }
- /* global page 1 */
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 31, 0x1000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 17, 0xe7f8);
-
- /* turn on all PHYs */
- for (i = 0; i <= 4; i++) {
- val = _mt7620_mii_read(gsw, gsw->ephy_base + i, 0);
- val &= ~BIT(11);
- _mt7620_mii_write(gsw, gsw->ephy_base + i, 0, val);
- }
- }
-
- /* global page 0 */
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 31, 0x8000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 0, 30, 0xa000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 30, 0xa000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 2, 30, 0xa000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 3, 30, 0xa000);
-
- _mt7620_mii_write(gsw, gsw->ephy_base + 0, 4, 0x05e1);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 4, 0x05e1);
- _mt7620_mii_write(gsw, gsw->ephy_base + 2, 4, 0x05e1);
- _mt7620_mii_write(gsw, gsw->ephy_base + 3, 4, 0x05e1);
-
- /* global page 2 */
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 31, 0xa000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 0, 16, 0x1111);
- _mt7620_mii_write(gsw, gsw->ephy_base + 1, 16, 0x1010);
- _mt7620_mii_write(gsw, gsw->ephy_base + 2, 16, 0x1515);
- _mt7620_mii_write(gsw, gsw->ephy_base + 3, 16, 0x0f0f);
-
- /* CPU Port6 Force Link 1G, FC ON */
- mtk_switch_w32(gsw, 0x5e33b, GSW_REG_PORT_PMCR(6));
-
- /* Set Port 6 as CPU Port */
- mtk_switch_w32(gsw, 0x7f7f7fe0, 0x0010);
-
- /* setup port 4 */
- if (gsw->port4 == PORT4_EPHY) {
- u32 val = rt_sysc_r32(SYSC_REG_CFG1);
-
- val |= 3 << 14;
- rt_sysc_w32(val, SYSC_REG_CFG1);
- _mt7620_mii_write(gsw, gsw->ephy_base + 4, 30, 0xa000);
- _mt7620_mii_write(gsw, gsw->ephy_base + 4, 4, 0x05e1);
- _mt7620_mii_write(gsw, gsw->ephy_base + 4, 16, 0x1313);
- pr_info("gsw: setting port4 to ephy mode\n");
- } else if (!mdio_mode) {
- u32 val = rt_sysc_r32(SYSC_REG_CFG1);
-
- val &= ~(3 << 14);
- rt_sysc_w32(val, SYSC_REG_CFG1);
- pr_info("gsw: setting port4 to gmac mode\n");
- }
-}
-
-static const struct of_device_id mediatek_gsw_match[] = {
- { .compatible = "mediatek,mt7620-gsw" },
- {},
-};
-MODULE_DEVICE_TABLE(of, mediatek_gsw_match);
-
-int mtk_gsw_init(struct fe_priv *priv)
-{
- struct device_node *np = priv->switch_np;
- struct platform_device *pdev = of_find_device_by_node(np);
- struct mt7620_gsw *gsw;
-
- if (!pdev)
- return -ENODEV;
-
- if (!of_device_is_compatible(np, mediatek_gsw_match->compatible))
- return -EINVAL;
-
- gsw = platform_get_drvdata(pdev);
- priv->soc->swpriv = gsw;
-
- mt7620_hw_init(gsw, mt7620_mdio_mode(priv->dev->of_node));
-
- if (gsw->irq) {
- request_irq(gsw->irq, gsw_interrupt_mt7620, 0,
- "gsw", priv);
- mtk_switch_w32(gsw, ~PORT_IRQ_ST_CHG, GSW_REG_IMR);
- }
-
- return 0;
-}
-
-static int mt7620_gsw_probe(struct platform_device *pdev)
-{
- struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- const char *port4 = NULL;
- struct mt7620_gsw *gsw;
- struct device_node *np = pdev->dev.of_node;
- u16 val;
-
- gsw = devm_kzalloc(&pdev->dev, sizeof(struct mt7620_gsw), GFP_KERNEL);
- if (!gsw)
- return -ENOMEM;
-
- gsw->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(gsw->base))
- return PTR_ERR(gsw->base);
-
- gsw->dev = &pdev->dev;
-
- of_property_read_string(np, "mediatek,port4", &port4);
- if (port4 && !strcmp(port4, "ephy"))
- gsw->port4 = PORT4_EPHY;
- else if (port4 && !strcmp(port4, "gmac"))
- gsw->port4 = PORT4_EXT;
- else
- gsw->port4 = PORT4_EPHY;
-
- if (of_property_read_u16(np, "mediatek,ephy-base-address", &val) == 0)
- gsw->ephy_base = val;
- else
- gsw->ephy_base = 0;
-
- gsw->irq = platform_get_irq(pdev, 0);
-
- platform_set_drvdata(pdev, gsw);
-
- return 0;
-}
-
-static int mt7620_gsw_remove(struct platform_device *pdev)
-{
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-static struct platform_driver gsw_driver = {
- .probe = mt7620_gsw_probe,
- .remove = mt7620_gsw_remove,
- .driver = {
- .name = "mt7620-gsw",
- .owner = THIS_MODULE,
- .of_match_table = mediatek_gsw_match,
- },
-};
-
-module_platform_driver(gsw_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION("GBit switch driver for Mediatek MT7620 SoC");
-MODULE_VERSION(MTK_FE_DRV_VERSION);
projects / openwrt / staging / mkresin.git / blobdiff