ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/net/dsa/mt7530.c b/marvell/linux/drivers/net/dsa/mt7530.c
new file mode 100644
index 0000000..bba4ff0
--- /dev/null
+++ b/marvell/linux/drivers/net/dsa/mt7530.c
@@ -0,0 +1,1742 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Mediatek MT7530 DSA Switch driver
+ * Copyright (C) 2017 Sean Wang <sean.wang@mediatek.com>
+ */
+#include <linux/etherdevice.h>
+#include <linux/if_bridge.h>
+#include <linux/iopoll.h>
+#include <linux/mdio.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include <linux/of_platform.h>
+#include <linux/phylink.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+#include <linux/gpio/consumer.h>
+#include <net/dsa.h>
+
+#include "mt7530.h"
+
+/* String, offset, and register size in bytes if different from 4 bytes */
+static const struct mt7530_mib_desc mt7530_mib[] = {
+ MIB_DESC(1, 0x00, "TxDrop"),
+ MIB_DESC(1, 0x04, "TxCrcErr"),
+ MIB_DESC(1, 0x08, "TxUnicast"),
+ MIB_DESC(1, 0x0c, "TxMulticast"),
+ MIB_DESC(1, 0x10, "TxBroadcast"),
+ MIB_DESC(1, 0x14, "TxCollision"),
+ MIB_DESC(1, 0x18, "TxSingleCollision"),
+ MIB_DESC(1, 0x1c, "TxMultipleCollision"),
+ MIB_DESC(1, 0x20, "TxDeferred"),
+ MIB_DESC(1, 0x24, "TxLateCollision"),
+ MIB_DESC(1, 0x28, "TxExcessiveCollistion"),
+ MIB_DESC(1, 0x2c, "TxPause"),
+ MIB_DESC(1, 0x30, "TxPktSz64"),
+ MIB_DESC(1, 0x34, "TxPktSz65To127"),
+ MIB_DESC(1, 0x38, "TxPktSz128To255"),
+ MIB_DESC(1, 0x3c, "TxPktSz256To511"),
+ MIB_DESC(1, 0x40, "TxPktSz512To1023"),
+ MIB_DESC(1, 0x44, "Tx1024ToMax"),
+ MIB_DESC(2, 0x48, "TxBytes"),
+ MIB_DESC(1, 0x60, "RxDrop"),
+ MIB_DESC(1, 0x64, "RxFiltering"),
+ MIB_DESC(1, 0x68, "RxUnicast"),
+ MIB_DESC(1, 0x6c, "RxMulticast"),
+ MIB_DESC(1, 0x70, "RxBroadcast"),
+ MIB_DESC(1, 0x74, "RxAlignErr"),
+ MIB_DESC(1, 0x78, "RxCrcErr"),
+ MIB_DESC(1, 0x7c, "RxUnderSizeErr"),
+ MIB_DESC(1, 0x80, "RxFragErr"),
+ MIB_DESC(1, 0x84, "RxOverSzErr"),
+ MIB_DESC(1, 0x88, "RxJabberErr"),
+ MIB_DESC(1, 0x8c, "RxPause"),
+ MIB_DESC(1, 0x90, "RxPktSz64"),
+ MIB_DESC(1, 0x94, "RxPktSz65To127"),
+ MIB_DESC(1, 0x98, "RxPktSz128To255"),
+ MIB_DESC(1, 0x9c, "RxPktSz256To511"),
+ MIB_DESC(1, 0xa0, "RxPktSz512To1023"),
+ MIB_DESC(1, 0xa4, "RxPktSz1024ToMax"),
+ MIB_DESC(2, 0xa8, "RxBytes"),
+ MIB_DESC(1, 0xb0, "RxCtrlDrop"),
+ MIB_DESC(1, 0xb4, "RxIngressDrop"),
+ MIB_DESC(1, 0xb8, "RxArlDrop"),
+};
+
+static int
+core_read_mmd_indirect(struct mt7530_priv *priv, int prtad, int devad)
+{
+ struct mii_bus *bus = priv->bus;
+ int value, ret;
+
+ /* Write the desired MMD Devad */
+ ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
+ if (ret < 0)
+ goto err;
+
+ /* Write the desired MMD register address */
+ ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
+ if (ret < 0)
+ goto err;
+
+ /* Select the Function : DATA with no post increment */
+ ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
+ if (ret < 0)
+ goto err;
+
+ /* Read the content of the MMD's selected register */
+ value = bus->read(bus, 0, MII_MMD_DATA);
+
+ return value;
+err:
+ dev_err(&bus->dev, "failed to read mmd register\n");
+
+ return ret;
+}
+
+static int
+core_write_mmd_indirect(struct mt7530_priv *priv, int prtad,
+ int devad, u32 data)
+{
+ struct mii_bus *bus = priv->bus;
+ int ret;
+
+ /* Write the desired MMD Devad */
+ ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
+ if (ret < 0)
+ goto err;
+
+ /* Write the desired MMD register address */
+ ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
+ if (ret < 0)
+ goto err;
+
+ /* Select the Function : DATA with no post increment */
+ ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
+ if (ret < 0)
+ goto err;
+
+ /* Write the data into MMD's selected register */
+ ret = bus->write(bus, 0, MII_MMD_DATA, data);
+err:
+ if (ret < 0)
+ dev_err(&bus->dev,
+ "failed to write mmd register\n");
+ return ret;
+}
+
+static void
+core_write(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+ struct mii_bus *bus = priv->bus;
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
+
+ mutex_unlock(&bus->mdio_lock);
+}
+
+static void
+core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set)
+{
+ struct mii_bus *bus = priv->bus;
+ u32 val;
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2);
+ val &= ~mask;
+ val |= set;
+ core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
+
+ mutex_unlock(&bus->mdio_lock);
+}
+
+static void
+core_set(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+ core_rmw(priv, reg, 0, val);
+}
+
+static void
+core_clear(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+ core_rmw(priv, reg, val, 0);
+}
+
+static int
+mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+ struct mii_bus *bus = priv->bus;
+ u16 page, r, lo, hi;
+ int ret;
+
+ page = (reg >> 6) & 0x3ff;
+ r = (reg >> 2) & 0xf;
+ lo = val & 0xffff;
+ hi = val >> 16;
+
+ /* MT7530 uses 31 as the pseudo port */
+ ret = bus->write(bus, 0x1f, 0x1f, page);
+ if (ret < 0)
+ goto err;
+
+ ret = bus->write(bus, 0x1f, r, lo);
+ if (ret < 0)
+ goto err;
+
+ ret = bus->write(bus, 0x1f, 0x10, hi);
+err:
+ if (ret < 0)
+ dev_err(&bus->dev,
+ "failed to write mt7530 register\n");
+ return ret;
+}
+
+static u32
+mt7530_mii_read(struct mt7530_priv *priv, u32 reg)
+{
+ struct mii_bus *bus = priv->bus;
+ u16 page, r, lo, hi;
+ int ret;
+
+ page = (reg >> 6) & 0x3ff;
+ r = (reg >> 2) & 0xf;
+
+ /* MT7530 uses 31 as the pseudo port */
+ ret = bus->write(bus, 0x1f, 0x1f, page);
+ if (ret < 0) {
+ dev_err(&bus->dev,
+ "failed to read mt7530 register\n");
+ return ret;
+ }
+
+ lo = bus->read(bus, 0x1f, r);
+ hi = bus->read(bus, 0x1f, 0x10);
+
+ return (hi << 16) | (lo & 0xffff);
+}
+
+static void
+mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+ struct mii_bus *bus = priv->bus;
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ mt7530_mii_write(priv, reg, val);
+
+ mutex_unlock(&bus->mdio_lock);
+}
+
+static u32
+_mt7530_read(struct mt7530_dummy_poll *p)
+{
+ struct mii_bus *bus = p->priv->bus;
+ u32 val;
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ val = mt7530_mii_read(p->priv, p->reg);
+
+ mutex_unlock(&bus->mdio_lock);
+
+ return val;
+}
+
+static u32
+mt7530_read(struct mt7530_priv *priv, u32 reg)
+{
+ struct mt7530_dummy_poll p;
+
+ INIT_MT7530_DUMMY_POLL(&p, priv, reg);
+ return _mt7530_read(&p);
+}
+
+static void
+mt7530_rmw(struct mt7530_priv *priv, u32 reg,
+ u32 mask, u32 set)
+{
+ struct mii_bus *bus = priv->bus;
+ u32 val;
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ val = mt7530_mii_read(priv, reg);
+ val &= ~mask;
+ val |= set;
+ mt7530_mii_write(priv, reg, val);
+
+ mutex_unlock(&bus->mdio_lock);
+}
+
+static void
+mt7530_set(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+ mt7530_rmw(priv, reg, 0, val);
+}
+
+static void
+mt7530_clear(struct mt7530_priv *priv, u32 reg, u32 val)
+{
+ mt7530_rmw(priv, reg, val, 0);
+}
+
+static int
+mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp)
+{
+ u32 val;
+ int ret;
+ struct mt7530_dummy_poll p;
+
+ /* Set the command operating upon the MAC address entries */
+ val = ATC_BUSY | ATC_MAT(0) | cmd;
+ mt7530_write(priv, MT7530_ATC, val);
+
+ INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_ATC);
+ ret = readx_poll_timeout(_mt7530_read, &p, val,
+ !(val & ATC_BUSY), 20, 20000);
+ if (ret < 0) {
+ dev_err(priv->dev, "reset timeout\n");
+ return ret;
+ }
+
+ /* Additional sanity for read command if the specified
+ * entry is invalid
+ */
+ val = mt7530_read(priv, MT7530_ATC);
+ if ((cmd == MT7530_FDB_READ) && (val & ATC_INVALID))
+ return -EINVAL;
+
+ if (rsp)
+ *rsp = val;
+
+ return 0;
+}
+
+static void
+mt7530_fdb_read(struct mt7530_priv *priv, struct mt7530_fdb *fdb)
+{
+ u32 reg[3];
+ int i;
+
+ /* Read from ARL table into an array */
+ for (i = 0; i < 3; i++) {
+ reg[i] = mt7530_read(priv, MT7530_TSRA1 + (i * 4));
+
+ dev_dbg(priv->dev, "%s(%d) reg[%d]=0x%x\n",
+ __func__, __LINE__, i, reg[i]);
+ }
+
+ fdb->vid = (reg[1] >> CVID) & CVID_MASK;
+ fdb->aging = (reg[2] >> AGE_TIMER) & AGE_TIMER_MASK;
+ fdb->port_mask = (reg[2] >> PORT_MAP) & PORT_MAP_MASK;
+ fdb->mac[0] = (reg[0] >> MAC_BYTE_0) & MAC_BYTE_MASK;
+ fdb->mac[1] = (reg[0] >> MAC_BYTE_1) & MAC_BYTE_MASK;
+ fdb->mac[2] = (reg[0] >> MAC_BYTE_2) & MAC_BYTE_MASK;
+ fdb->mac[3] = (reg[0] >> MAC_BYTE_3) & MAC_BYTE_MASK;
+ fdb->mac[4] = (reg[1] >> MAC_BYTE_4) & MAC_BYTE_MASK;
+ fdb->mac[5] = (reg[1] >> MAC_BYTE_5) & MAC_BYTE_MASK;
+ fdb->noarp = ((reg[2] >> ENT_STATUS) & ENT_STATUS_MASK) == STATIC_ENT;
+}
+
+static void
+mt7530_fdb_write(struct mt7530_priv *priv, u16 vid,
+ u8 port_mask, const u8 *mac,
+ u8 aging, u8 type)
+{
+ u32 reg[3] = { 0 };
+ int i;
+
+ reg[1] |= vid & CVID_MASK;
+ reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER;
+ reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP;
+ /* STATIC_ENT indicate that entry is static wouldn't
+ * be aged out and STATIC_EMP specified as erasing an
+ * entry
+ */
+ reg[2] |= (type & ENT_STATUS_MASK) << ENT_STATUS;
+ reg[1] |= mac[5] << MAC_BYTE_5;
+ reg[1] |= mac[4] << MAC_BYTE_4;
+ reg[0] |= mac[3] << MAC_BYTE_3;
+ reg[0] |= mac[2] << MAC_BYTE_2;
+ reg[0] |= mac[1] << MAC_BYTE_1;
+ reg[0] |= mac[0] << MAC_BYTE_0;
+
+ /* Write array into the ARL table */
+ for (i = 0; i < 3; i++)
+ mt7530_write(priv, MT7530_ATA1 + (i * 4), reg[i]);
+}
+
+static int
+mt7530_pad_clk_setup(struct dsa_switch *ds, int mode)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 ncpo1, ssc_delta, trgint, i, xtal;
+
+ xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK;
+
+ if (xtal == HWTRAP_XTAL_20MHZ) {
+ dev_err(priv->dev,
+ "%s: MT7530 with a 20MHz XTAL is not supported!\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ switch (mode) {
+ case PHY_INTERFACE_MODE_RGMII:
+ trgint = 0;
+ /* PLL frequency: 125MHz */
+ ncpo1 = 0x0c80;
+ break;
+ case PHY_INTERFACE_MODE_TRGMII:
+ trgint = 1;
+ if (priv->id == ID_MT7621) {
+ /* PLL frequency: 125MHz: 1.0GBit */
+ if (xtal == HWTRAP_XTAL_40MHZ)
+ ncpo1 = 0x0640;
+ if (xtal == HWTRAP_XTAL_25MHZ)
+ ncpo1 = 0x0a00;
+ } else { /* PLL frequency: 250MHz: 2.0Gbit */
+ if (xtal == HWTRAP_XTAL_40MHZ)
+ ncpo1 = 0x0c80;
+ if (xtal == HWTRAP_XTAL_25MHZ)
+ ncpo1 = 0x1400;
+ }
+ break;
+ default:
+ dev_err(priv->dev, "xMII mode %d not supported\n", mode);
+ return -EINVAL;
+ }
+
+ if (xtal == HWTRAP_XTAL_25MHZ)
+ ssc_delta = 0x57;
+ else
+ ssc_delta = 0x87;
+
+ mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
+ P6_INTF_MODE(trgint));
+
+ /* Lower Tx Driving for TRGMII path */
+ for (i = 0 ; i < NUM_TRGMII_CTRL ; i++)
+ mt7530_write(priv, MT7530_TRGMII_TD_ODT(i),
+ TD_DM_DRVP(8) | TD_DM_DRVN(8));
+
+ /* Setup core clock for MT7530 */
+ /* Disable MT7530 core clock */
+ core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+
+ /* Disable PLL, since phy_device has not yet been created
+ * provided for phy_[read,write]_mmd_indirect is called, we
+ * provide our own core_write_mmd_indirect to complete this
+ * function.
+ */
+ core_write_mmd_indirect(priv,
+ CORE_GSWPLL_GRP1,
+ MDIO_MMD_VEND2,
+ 0);
+
+ /* Set core clock into 500Mhz */
+ core_write(priv, CORE_GSWPLL_GRP2,
+ RG_GSWPLL_POSDIV_500M(1) |
+ RG_GSWPLL_FBKDIV_500M(25));
+
+ /* Enable PLL */
+ core_write(priv, CORE_GSWPLL_GRP1,
+ RG_GSWPLL_EN_PRE |
+ RG_GSWPLL_POSDIV_200M(2) |
+ RG_GSWPLL_FBKDIV_200M(32));
+
+ /* Enable MT7530 core clock */
+ core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+
+ /* Setup the MT7530 TRGMII Tx Clock */
+ core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+ core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1));
+ core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0));
+ core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta));
+ core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta));
+ core_write(priv, CORE_PLL_GROUP4,
+ RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN |
+ RG_SYSPLL_BIAS_LPF_EN);
+ core_write(priv, CORE_PLL_GROUP2,
+ RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN |
+ RG_SYSPLL_POSDIV(1));
+ core_write(priv, CORE_PLL_GROUP7,
+ RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) |
+ RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
+ core_set(priv, CORE_TRGMII_GSW_CLK_CG,
+ REG_GSWCK_EN | REG_TRGMIICK_EN);
+
+ if (!trgint)
+ for (i = 0 ; i < NUM_TRGMII_CTRL; i++)
+ mt7530_rmw(priv, MT7530_TRGMII_RD(i),
+ RD_TAP_MASK, RD_TAP(16));
+ return 0;
+}
+
+static void
+mt7530_mib_reset(struct dsa_switch *ds)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_FLUSH);
+ mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE);
+}
+
+static void
+mt7530_port_set_status(struct mt7530_priv *priv, int port, int enable)
+{
+ u32 mask = PMCR_TX_EN | PMCR_RX_EN | PMCR_FORCE_LNK;
+
+ if (enable)
+ mt7530_set(priv, MT7530_PMCR_P(port), mask);
+ else
+ mt7530_clear(priv, MT7530_PMCR_P(port), mask);
+}
+
+static int mt7530_phy_read(struct dsa_switch *ds, int port, int regnum)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ return mdiobus_read_nested(priv->bus, port, regnum);
+}
+
+static int mt7530_phy_write(struct dsa_switch *ds, int port, int regnum,
+ u16 val)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ return mdiobus_write_nested(priv->bus, port, regnum, val);
+}
+
+static void
+mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+ uint8_t *data)
+{
+ int i;
+
+ if (stringset != ETH_SS_STATS)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++)
+ strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name,
+ ETH_GSTRING_LEN);
+}
+
+static void
+mt7530_get_ethtool_stats(struct dsa_switch *ds, int port,
+ uint64_t *data)
+{
+ struct mt7530_priv *priv = ds->priv;
+ const struct mt7530_mib_desc *mib;
+ u32 reg, i;
+ u64 hi;
+
+ for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) {
+ mib = &mt7530_mib[i];
+ reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset;
+
+ data[i] = mt7530_read(priv, reg);
+ if (mib->size == 2) {
+ hi = mt7530_read(priv, reg + 4);
+ data[i] |= hi << 32;
+ }
+ }
+}
+
+static int
+mt7530_get_sset_count(struct dsa_switch *ds, int port, int sset)
+{
+ if (sset != ETH_SS_STATS)
+ return 0;
+
+ return ARRAY_SIZE(mt7530_mib);
+}
+
+static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u8 tx_delay = 0;
+ int val;
+
+ mutex_lock(&priv->reg_mutex);
+
+ val = mt7530_read(priv, MT7530_MHWTRAP);
+
+ val |= MHWTRAP_MANUAL | MHWTRAP_P5_MAC_SEL | MHWTRAP_P5_DIS;
+ val &= ~MHWTRAP_P5_RGMII_MODE & ~MHWTRAP_PHY0_SEL;
+
+ switch (priv->p5_intf_sel) {
+ case P5_INTF_SEL_PHY_P0:
+ /* MT7530_P5_MODE_GPHY_P0: 2nd GMAC -> P5 -> P0 */
+ val |= MHWTRAP_PHY0_SEL;
+ /* fall through */
+ case P5_INTF_SEL_PHY_P4:
+ /* MT7530_P5_MODE_GPHY_P4: 2nd GMAC -> P5 -> P4 */
+ val &= ~MHWTRAP_P5_MAC_SEL & ~MHWTRAP_P5_DIS;
+
+ /* Setup the MAC by default for the cpu port */
+ mt7530_write(priv, MT7530_PMCR_P(5), 0x56300);
+ break;
+ case P5_INTF_SEL_GMAC5:
+ /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
+ val &= ~MHWTRAP_P5_DIS;
+ break;
+ case P5_DISABLED:
+ interface = PHY_INTERFACE_MODE_NA;
+ break;
+ default:
+ dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
+ priv->p5_intf_sel);
+ goto unlock_exit;
+ }
+
+ /* Setup RGMII settings */
+ if (phy_interface_mode_is_rgmii(interface)) {
+ val |= MHWTRAP_P5_RGMII_MODE;
+
+ /* P5 RGMII RX Clock Control: delay setting for 1000M */
+ mt7530_write(priv, MT7530_P5RGMIIRXCR, CSR_RGMII_EDGE_ALIGN);
+
+ /* Don't set delay in DSA mode */
+ if (!dsa_is_dsa_port(priv->ds, 5) &&
+ (interface == PHY_INTERFACE_MODE_RGMII_TXID ||
+ interface == PHY_INTERFACE_MODE_RGMII_ID))
+ tx_delay = 4; /* n * 0.5 ns */
+
+ /* P5 RGMII TX Clock Control: delay x */
+ mt7530_write(priv, MT7530_P5RGMIITXCR,
+ CSR_RGMII_TXC_CFG(0x10 + tx_delay));
+
+ /* reduce P5 RGMII Tx driving, 8mA */
+ mt7530_write(priv, MT7530_IO_DRV_CR,
+ P5_IO_CLK_DRV(1) | P5_IO_DATA_DRV(1));
+ }
+
+ mt7530_write(priv, MT7530_MHWTRAP, val);
+
+ dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
+ val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));
+
+ priv->p5_interface = interface;
+
+unlock_exit:
+ mutex_unlock(&priv->reg_mutex);
+}
+
+static int
+mt7530_cpu_port_enable(struct mt7530_priv *priv,
+ int port)
+{
+ /* Enable Mediatek header mode on the cpu port */
+ mt7530_write(priv, MT7530_PVC_P(port),
+ PORT_SPEC_TAG);
+
+ /* Unknown multicast frame forwarding to the cpu port */
+ mt7530_rmw(priv, MT7530_MFC, UNM_FFP_MASK, UNM_FFP(BIT(port)));
+
+ /* Set CPU port number */
+ if (priv->id == ID_MT7530 || priv->id == ID_MT7621)
+ mt7530_rmw(priv, MT7530_MFC, CPU_MASK, CPU_EN | CPU_PORT(port));
+
+ /* CPU port gets connected to all user ports of
+ * the switch
+ */
+ mt7530_write(priv, MT7530_PCR_P(port),
+ PCR_MATRIX(dsa_user_ports(priv->ds)));
+
+ return 0;
+}
+
+static int
+mt7530_port_enable(struct dsa_switch *ds, int port,
+ struct phy_device *phy)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ if (!dsa_is_user_port(ds, port))
+ return 0;
+
+ mutex_lock(&priv->reg_mutex);
+
+ /* Allow the user port gets connected to the cpu port and also
+ * restore the port matrix if the port is the member of a certain
+ * bridge.
+ */
+ priv->ports[port].pm |= PCR_MATRIX(BIT(MT7530_CPU_PORT));
+ priv->ports[port].enable = true;
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
+ priv->ports[port].pm);
+ mt7530_port_set_status(priv, port, 0);
+
+ mutex_unlock(&priv->reg_mutex);
+
+ return 0;
+}
+
+static void
+mt7530_port_disable(struct dsa_switch *ds, int port)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ if (!dsa_is_user_port(ds, port))
+ return;
+
+ mutex_lock(&priv->reg_mutex);
+
+ /* Clear up all port matrix which could be restored in the next
+ * enablement for the port.
+ */
+ priv->ports[port].enable = false;
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
+ PCR_MATRIX_CLR);
+ mt7530_port_set_status(priv, port, 0);
+
+ mutex_unlock(&priv->reg_mutex);
+}
+
+static void
+mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 stp_state;
+
+ switch (state) {
+ case BR_STATE_DISABLED:
+ stp_state = MT7530_STP_DISABLED;
+ break;
+ case BR_STATE_BLOCKING:
+ stp_state = MT7530_STP_BLOCKING;
+ break;
+ case BR_STATE_LISTENING:
+ stp_state = MT7530_STP_LISTENING;
+ break;
+ case BR_STATE_LEARNING:
+ stp_state = MT7530_STP_LEARNING;
+ break;
+ case BR_STATE_FORWARDING:
+ default:
+ stp_state = MT7530_STP_FORWARDING;
+ break;
+ }
+
+ mt7530_rmw(priv, MT7530_SSP_P(port), FID_PST_MASK, stp_state);
+}
+
+static int
+mt7530_port_bridge_join(struct dsa_switch *ds, int port,
+ struct net_device *bridge)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 port_bitmap = BIT(MT7530_CPU_PORT);
+ int i;
+
+ mutex_lock(&priv->reg_mutex);
+
+ for (i = 0; i < MT7530_NUM_PORTS; i++) {
+ /* Add this port to the port matrix of the other ports in the
+ * same bridge. If the port is disabled, port matrix is kept
+ * and not being setup until the port becomes enabled.
+ */
+ if (dsa_is_user_port(ds, i) && i != port) {
+ if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ continue;
+ if (priv->ports[i].enable)
+ mt7530_set(priv, MT7530_PCR_P(i),
+ PCR_MATRIX(BIT(port)));
+ priv->ports[i].pm |= PCR_MATRIX(BIT(port));
+
+ port_bitmap |= BIT(i);
+ }
+ }
+
+ /* Add the all other ports to this port matrix. */
+ if (priv->ports[port].enable)
+ mt7530_rmw(priv, MT7530_PCR_P(port),
+ PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap));
+ priv->ports[port].pm |= PCR_MATRIX(port_bitmap);
+
+ mutex_unlock(&priv->reg_mutex);
+
+ return 0;
+}
+
+static void
+mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
+{
+ struct mt7530_priv *priv = ds->priv;
+ bool all_user_ports_removed = true;
+ int i;
+
+ /* When a port is removed from the bridge, the port would be set up
+ * back to the default as is at initial boot which is a VLAN-unaware
+ * port.
+ */
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
+ MT7530_PORT_MATRIX_MODE);
+ mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
+ VLAN_ATTR(MT7530_VLAN_TRANSPARENT) |
+ PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+
+ for (i = 0; i < MT7530_NUM_PORTS; i++) {
+ if (dsa_is_user_port(ds, i) &&
+ dsa_port_is_vlan_filtering(&ds->ports[i])) {
+ all_user_ports_removed = false;
+ break;
+ }
+ }
+
+ /* CPU port also does the same thing until all user ports belonging to
+ * the CPU port get out of VLAN filtering mode.
+ */
+ if (all_user_ports_removed) {
+ mt7530_write(priv, MT7530_PCR_P(MT7530_CPU_PORT),
+ PCR_MATRIX(dsa_user_ports(priv->ds)));
+ mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT), PORT_SPEC_TAG
+ | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+ }
+}
+
+static void
+mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ /* Trapped into security mode allows packet forwarding through VLAN
+ * table lookup. CPU port is set to fallback mode to let untagged
+ * frames pass through.
+ */
+ if (dsa_is_cpu_port(ds, port))
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
+ MT7530_PORT_FALLBACK_MODE);
+ else
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
+ MT7530_PORT_SECURITY_MODE);
+
+ /* Set the port as a user port which is to be able to recognize VID
+ * from incoming packets before fetching entry within the VLAN table.
+ */
+ mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
+ VLAN_ATTR(MT7530_VLAN_USER) |
+ PVC_EG_TAG(MT7530_VLAN_EG_DISABLED));
+}
+
+static void
+mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
+ struct net_device *bridge)
+{
+ struct mt7530_priv *priv = ds->priv;
+ int i;
+
+ mutex_lock(&priv->reg_mutex);
+
+ for (i = 0; i < MT7530_NUM_PORTS; i++) {
+ /* Remove this port from the port matrix of the other ports
+ * in the same bridge. If the port is disabled, port matrix
+ * is kept and not being setup until the port becomes enabled.
+ */
+ if (dsa_is_user_port(ds, i) && i != port) {
+ if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ continue;
+ if (priv->ports[i].enable)
+ mt7530_clear(priv, MT7530_PCR_P(i),
+ PCR_MATRIX(BIT(port)));
+ priv->ports[i].pm &= ~PCR_MATRIX(BIT(port));
+ }
+ }
+
+ /* Set the cpu port to be the only one in the port matrix of
+ * this port.
+ */
+ if (priv->ports[port].enable)
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
+ PCR_MATRIX(BIT(MT7530_CPU_PORT)));
+ priv->ports[port].pm = PCR_MATRIX(BIT(MT7530_CPU_PORT));
+
+ mutex_unlock(&priv->reg_mutex);
+}
+
+static int
+mt7530_port_fdb_add(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid)
+{
+ struct mt7530_priv *priv = ds->priv;
+ int ret;
+ u8 port_mask = BIT(port);
+
+ mutex_lock(&priv->reg_mutex);
+ mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
+ ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
+ mutex_unlock(&priv->reg_mutex);
+
+ return ret;
+}
+
+static int
+mt7530_port_fdb_del(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid)
+{
+ struct mt7530_priv *priv = ds->priv;
+ int ret;
+ u8 port_mask = BIT(port);
+
+ mutex_lock(&priv->reg_mutex);
+ mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_EMP);
+ ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
+ mutex_unlock(&priv->reg_mutex);
+
+ return ret;
+}
+
+static int
+mt7530_port_fdb_dump(struct dsa_switch *ds, int port,
+ dsa_fdb_dump_cb_t *cb, void *data)
+{
+ struct mt7530_priv *priv = ds->priv;
+ struct mt7530_fdb _fdb = { 0 };
+ int cnt = MT7530_NUM_FDB_RECORDS;
+ int ret = 0;
+ u32 rsp = 0;
+
+ mutex_lock(&priv->reg_mutex);
+
+ ret = mt7530_fdb_cmd(priv, MT7530_FDB_START, &rsp);
+ if (ret < 0)
+ goto err;
+
+ do {
+ if (rsp & ATC_SRCH_HIT) {
+ mt7530_fdb_read(priv, &_fdb);
+ if (_fdb.port_mask & BIT(port)) {
+ ret = cb(_fdb.mac, _fdb.vid, _fdb.noarp,
+ data);
+ if (ret < 0)
+ break;
+ }
+ }
+ } while (--cnt &&
+ !(rsp & ATC_SRCH_END) &&
+ !mt7530_fdb_cmd(priv, MT7530_FDB_NEXT, &rsp));
+err:
+ mutex_unlock(&priv->reg_mutex);
+
+ return 0;
+}
+
+static int
+mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid)
+{
+ struct mt7530_dummy_poll p;
+ u32 val;
+ int ret;
+
+ val = VTCR_BUSY | VTCR_FUNC(cmd) | vid;
+ mt7530_write(priv, MT7530_VTCR, val);
+
+ INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_VTCR);
+ ret = readx_poll_timeout(_mt7530_read, &p, val,
+ !(val & VTCR_BUSY), 20, 20000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ return ret;
+ }
+
+ val = mt7530_read(priv, MT7530_VTCR);
+ if (val & VTCR_INVALID) {
+ dev_err(priv->dev, "read VTCR invalid\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+mt7530_port_vlan_filtering(struct dsa_switch *ds, int port,
+ bool vlan_filtering)
+{
+ if (vlan_filtering) {
+ /* The port is being kept as VLAN-unaware port when bridge is
+ * set up with vlan_filtering not being set, Otherwise, the
+ * port and the corresponding CPU port is required the setup
+ * for becoming a VLAN-aware port.
+ */
+ mt7530_port_set_vlan_aware(ds, port);
+ mt7530_port_set_vlan_aware(ds, MT7530_CPU_PORT);
+ } else {
+ mt7530_port_set_vlan_unaware(ds, port);
+ }
+
+ return 0;
+}
+
+static int
+mt7530_port_vlan_prepare(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ /* nothing needed */
+
+ return 0;
+}
+
+static void
+mt7530_hw_vlan_add(struct mt7530_priv *priv,
+ struct mt7530_hw_vlan_entry *entry)
+{
+ u8 new_members;
+ u32 val;
+
+ new_members = entry->old_members | BIT(entry->port) |
+ BIT(MT7530_CPU_PORT);
+
+ /* Validate the entry with independent learning, create egress tag per
+ * VLAN and joining the port as one of the port members.
+ */
+ val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | VLAN_VALID;
+ mt7530_write(priv, MT7530_VAWD1, val);
+
+ /* Decide whether adding tag or not for those outgoing packets from the
+ * port inside the VLAN.
+ */
+ val = entry->untagged ? MT7530_VLAN_EGRESS_UNTAG :
+ MT7530_VLAN_EGRESS_TAG;
+ mt7530_rmw(priv, MT7530_VAWD2,
+ ETAG_CTRL_P_MASK(entry->port),
+ ETAG_CTRL_P(entry->port, val));
+
+ /* CPU port is always taken as a tagged port for serving more than one
+ * VLANs across and also being applied with egress type stack mode for
+ * that VLAN tags would be appended after hardware special tag used as
+ * DSA tag.
+ */
+ mt7530_rmw(priv, MT7530_VAWD2,
+ ETAG_CTRL_P_MASK(MT7530_CPU_PORT),
+ ETAG_CTRL_P(MT7530_CPU_PORT,
+ MT7530_VLAN_EGRESS_STACK));
+}
+
+static void
+mt7530_hw_vlan_del(struct mt7530_priv *priv,
+ struct mt7530_hw_vlan_entry *entry)
+{
+ u8 new_members;
+ u32 val;
+
+ new_members = entry->old_members & ~BIT(entry->port);
+
+ val = mt7530_read(priv, MT7530_VAWD1);
+ if (!(val & VLAN_VALID)) {
+ dev_err(priv->dev,
+ "Cannot be deleted due to invalid entry\n");
+ return;
+ }
+
+ /* If certain member apart from CPU port is still alive in the VLAN,
+ * the entry would be kept valid. Otherwise, the entry is got to be
+ * disabled.
+ */
+ if (new_members && new_members != BIT(MT7530_CPU_PORT)) {
+ val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) |
+ VLAN_VALID;
+ mt7530_write(priv, MT7530_VAWD1, val);
+ } else {
+ mt7530_write(priv, MT7530_VAWD1, 0);
+ mt7530_write(priv, MT7530_VAWD2, 0);
+ }
+}
+
+static void
+mt7530_hw_vlan_update(struct mt7530_priv *priv, u16 vid,
+ struct mt7530_hw_vlan_entry *entry,
+ mt7530_vlan_op vlan_op)
+{
+ u32 val;
+
+ /* Fetch entry */
+ mt7530_vlan_cmd(priv, MT7530_VTCR_RD_VID, vid);
+
+ val = mt7530_read(priv, MT7530_VAWD1);
+
+ entry->old_members = (val >> PORT_MEM_SHFT) & PORT_MEM_MASK;
+
+ /* Manipulate entry */
+ vlan_op(priv, entry);
+
+ /* Flush result to hardware */
+ mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, vid);
+}
+
+static void
+mt7530_port_vlan_add(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+ bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+ struct mt7530_hw_vlan_entry new_entry;
+ struct mt7530_priv *priv = ds->priv;
+ u16 vid;
+
+ mutex_lock(&priv->reg_mutex);
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
+ mt7530_hw_vlan_entry_init(&new_entry, port, untagged);
+ mt7530_hw_vlan_update(priv, vid, &new_entry,
+ mt7530_hw_vlan_add);
+ }
+
+ if (pvid) {
+ mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
+ G0_PORT_VID(vlan->vid_end));
+ priv->ports[port].pvid = vlan->vid_end;
+ }
+
+ mutex_unlock(&priv->reg_mutex);
+}
+
+static int
+mt7530_port_vlan_del(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct mt7530_hw_vlan_entry target_entry;
+ struct mt7530_priv *priv = ds->priv;
+ u16 vid, pvid;
+
+ mutex_lock(&priv->reg_mutex);
+
+ pvid = priv->ports[port].pvid;
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
+ mt7530_hw_vlan_entry_init(&target_entry, port, 0);
+ mt7530_hw_vlan_update(priv, vid, &target_entry,
+ mt7530_hw_vlan_del);
+
+ /* PVID is being restored to the default whenever the PVID port
+ * is being removed from the VLAN.
+ */
+ if (pvid == vid)
+ pvid = G0_PORT_VID_DEF;
+ }
+
+ mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK, pvid);
+ priv->ports[port].pvid = pvid;
+
+ mutex_unlock(&priv->reg_mutex);
+
+ return 0;
+}
+
+static int mt7530_port_mirror_add(struct dsa_switch *ds, int port,
+ struct dsa_mall_mirror_tc_entry *mirror,
+ bool ingress)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 val;
+
+ /* Check for existent entry */
+ if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
+ return -EEXIST;
+
+ val = mt7530_read(priv, MT7530_MFC);
+
+ /* MT7530 only supports one monitor port */
+ if (val & MIRROR_EN && MIRROR_PORT(val) != mirror->to_local_port)
+ return -EEXIST;
+
+ val |= MIRROR_EN;
+ val &= ~MIRROR_MASK;
+ val |= mirror->to_local_port;
+ mt7530_write(priv, MT7530_MFC, val);
+
+ val = mt7530_read(priv, MT7530_PCR_P(port));
+ if (ingress) {
+ val |= PORT_RX_MIR;
+ priv->mirror_rx |= BIT(port);
+ } else {
+ val |= PORT_TX_MIR;
+ priv->mirror_tx |= BIT(port);
+ }
+ mt7530_write(priv, MT7530_PCR_P(port), val);
+
+ return 0;
+}
+
+static void mt7530_port_mirror_del(struct dsa_switch *ds, int port,
+ struct dsa_mall_mirror_tc_entry *mirror)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 val;
+
+ val = mt7530_read(priv, MT7530_PCR_P(port));
+ if (mirror->ingress) {
+ val &= ~PORT_RX_MIR;
+ priv->mirror_rx &= ~BIT(port);
+ } else {
+ val &= ~PORT_TX_MIR;
+ priv->mirror_tx &= ~BIT(port);
+ }
+ mt7530_write(priv, MT7530_PCR_P(port), val);
+
+ if (!priv->mirror_rx && !priv->mirror_tx) {
+ val = mt7530_read(priv, MT7530_MFC);
+ val &= ~MIRROR_EN;
+ mt7530_write(priv, MT7530_MFC, val);
+ }
+}
+
+static enum dsa_tag_protocol
+mtk_get_tag_protocol(struct dsa_switch *ds, int port,
+ enum dsa_tag_protocol mp)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ if (port != MT7530_CPU_PORT) {
+ dev_warn(priv->dev,
+ "port not matched with tagging CPU port\n");
+ return DSA_TAG_PROTO_NONE;
+ } else {
+ return DSA_TAG_PROTO_MTK;
+ }
+}
+
+static int
+mt7530_setup(struct dsa_switch *ds)
+{
+ struct mt7530_priv *priv = ds->priv;
+ struct device_node *phy_node;
+ struct device_node *mac_np;
+ struct mt7530_dummy_poll p;
+ phy_interface_t interface;
+ struct device_node *dn;
+ u32 id, val;
+ int ret, i;
+
+ /* The parent node of master netdev which holds the common system
+ * controller also is the container for two GMACs nodes representing
+ * as two netdev instances.
+ */
+ dn = ds->ports[MT7530_CPU_PORT].master->dev.of_node->parent;
+ ds->configure_vlan_while_not_filtering = true;
+
+ if (priv->id == ID_MT7530) {
+ regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
+ ret = regulator_enable(priv->core_pwr);
+ if (ret < 0) {
+ dev_err(priv->dev,
+ "Failed to enable core power: %d\n", ret);
+ return ret;
+ }
+
+ regulator_set_voltage(priv->io_pwr, 3300000, 3300000);
+ ret = regulator_enable(priv->io_pwr);
+ if (ret < 0) {
+ dev_err(priv->dev, "Failed to enable io pwr: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ /* Reset whole chip through gpio pin or memory-mapped registers for
+ * different type of hardware
+ */
+ if (priv->mcm) {
+ reset_control_assert(priv->rstc);
+ usleep_range(1000, 1100);
+ reset_control_deassert(priv->rstc);
+ } else {
+ gpiod_set_value_cansleep(priv->reset, 0);
+ usleep_range(1000, 1100);
+ gpiod_set_value_cansleep(priv->reset, 1);
+ }
+
+ /* Waiting for MT7530 got to stable */
+ INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
+ ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
+ 20, 1000000);
+ if (ret < 0) {
+ dev_err(priv->dev, "reset timeout\n");
+ return ret;
+ }
+
+ id = mt7530_read(priv, MT7530_CREV);
+ id >>= CHIP_NAME_SHIFT;
+ if (id != MT7530_ID) {
+ dev_err(priv->dev, "chip %x can't be supported\n", id);
+ return -ENODEV;
+ }
+
+ /* Reset the switch through internal reset */
+ mt7530_write(priv, MT7530_SYS_CTRL,
+ SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
+ SYS_CTRL_REG_RST);
+
+ /* Enable Port 6 only; P5 as GMAC5 which currently is not supported */
+ val = mt7530_read(priv, MT7530_MHWTRAP);
+ val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
+ val |= MHWTRAP_MANUAL;
+ mt7530_write(priv, MT7530_MHWTRAP, val);
+
+ priv->p6_interface = PHY_INTERFACE_MODE_NA;
+
+ /* Enable and reset MIB counters */
+ mt7530_mib_reset(ds);
+
+ for (i = 0; i < MT7530_NUM_PORTS; i++) {
+ /* Disable forwarding by default on all ports */
+ mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
+ PCR_MATRIX_CLR);
+
+ if (dsa_is_cpu_port(ds, i))
+ mt7530_cpu_port_enable(priv, i);
+ else
+ mt7530_port_disable(ds, i);
+
+ /* Enable consistent egress tag */
+ mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
+ PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+ }
+
+ /* Setup port 5 */
+ priv->p5_intf_sel = P5_DISABLED;
+ interface = PHY_INTERFACE_MODE_NA;
+
+ if (!dsa_is_unused_port(ds, 5)) {
+ priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
+ interface = of_get_phy_mode(ds->ports[5].dn);
+ } else {
+ /* Scan the ethernet nodes. look for GMAC1, lookup used phy */
+ for_each_child_of_node(dn, mac_np) {
+ if (!of_device_is_compatible(mac_np,
+ "mediatek,eth-mac"))
+ continue;
+
+ ret = of_property_read_u32(mac_np, "reg", &id);
+ if (ret < 0 || id != 1)
+ continue;
+
+ phy_node = of_parse_phandle(mac_np, "phy-handle", 0);
+ if (!phy_node)
+ continue;
+
+ if (phy_node->parent == priv->dev->of_node->parent) {
+ interface = of_get_phy_mode(mac_np);
+ id = of_mdio_parse_addr(ds->dev, phy_node);
+ if (id == 0)
+ priv->p5_intf_sel = P5_INTF_SEL_PHY_P0;
+ if (id == 4)
+ priv->p5_intf_sel = P5_INTF_SEL_PHY_P4;
+ }
+ of_node_put(phy_node);
+ break;
+ }
+ }
+
+ mt7530_setup_port5(ds, interface);
+
+ /* Flush the FDB table */
+ ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static void mt7530_phylink_mac_config(struct dsa_switch *ds, int port,
+ unsigned int mode,
+ const struct phylink_link_state *state)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 mcr_cur, mcr_new;
+
+ switch (port) {
+ case 0: /* Internal phy */
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ if (state->interface != PHY_INTERFACE_MODE_GMII)
+ return;
+ break;
+ case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
+ if (priv->p5_interface == state->interface)
+ break;
+ if (!phy_interface_mode_is_rgmii(state->interface) &&
+ state->interface != PHY_INTERFACE_MODE_MII &&
+ state->interface != PHY_INTERFACE_MODE_GMII)
+ return;
+
+ mt7530_setup_port5(ds, state->interface);
+ break;
+ case 6: /* 1st cpu port */
+ if (priv->p6_interface == state->interface)
+ break;
+
+ if (state->interface != PHY_INTERFACE_MODE_RGMII &&
+ state->interface != PHY_INTERFACE_MODE_TRGMII)
+ return;
+
+ /* Setup TX circuit incluing relevant PAD and driving */
+ mt7530_pad_clk_setup(ds, state->interface);
+
+ priv->p6_interface = state->interface;
+ break;
+ default:
+ dev_err(ds->dev, "%s: unsupported port: %i\n", __func__, port);
+ return;
+ }
+
+ if (phylink_autoneg_inband(mode)) {
+ dev_err(ds->dev, "%s: in-band negotiation unsupported\n",
+ __func__);
+ return;
+ }
+
+ mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port));
+ mcr_new = mcr_cur;
+ mcr_new &= ~(PMCR_FORCE_SPEED_1000 | PMCR_FORCE_SPEED_100 |
+ PMCR_FORCE_FDX | PMCR_TX_FC_EN | PMCR_RX_FC_EN);
+ mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN |
+ PMCR_BACKPR_EN | PMCR_FORCE_MODE;
+
+ /* Are we connected to external phy */
+ if (port == 5 && dsa_is_user_port(ds, 5))
+ mcr_new |= PMCR_EXT_PHY;
+
+ switch (state->speed) {
+ case SPEED_1000:
+ mcr_new |= PMCR_FORCE_SPEED_1000;
+ if (priv->eee_enable & BIT(port))
+ mcr_new |= PMCR_FORCE_EEE1G;
+ break;
+ case SPEED_100:
+ mcr_new |= PMCR_FORCE_SPEED_100;
+ if (priv->eee_enable & BIT(port))
+ mcr_new |= PMCR_FORCE_EEE100;
+ break;
+ }
+ if (state->duplex == DUPLEX_FULL) {
+ mcr_new |= PMCR_FORCE_FDX;
+ if (state->pause & MLO_PAUSE_TX)
+ mcr_new |= PMCR_TX_FC_EN;
+ if (state->pause & MLO_PAUSE_RX)
+ mcr_new |= PMCR_RX_FC_EN;
+ }
+
+ if (mcr_new != mcr_cur)
+ mt7530_write(priv, MT7530_PMCR_P(port), mcr_new);
+}
+
+static void mt7530_phylink_mac_link_down(struct dsa_switch *ds, int port,
+ unsigned int mode,
+ phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ mt7530_port_set_status(priv, port, 0);
+}
+
+static void mt7530_phylink_mac_link_up(struct dsa_switch *ds, int port,
+ unsigned int mode,
+ phy_interface_t interface,
+ struct phy_device *phydev)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ mt7530_port_set_status(priv, port, 1);
+}
+
+static void mt7530_phylink_validate(struct dsa_switch *ds, int port,
+ unsigned long *supported,
+ struct phylink_link_state *state)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+
+ switch (port) {
+ case 0: /* Internal phy */
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ if (state->interface != PHY_INTERFACE_MODE_NA &&
+ state->interface != PHY_INTERFACE_MODE_GMII)
+ goto unsupported;
+ break;
+ case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
+ if (state->interface != PHY_INTERFACE_MODE_NA &&
+ !phy_interface_mode_is_rgmii(state->interface) &&
+ state->interface != PHY_INTERFACE_MODE_MII &&
+ state->interface != PHY_INTERFACE_MODE_GMII)
+ goto unsupported;
+ break;
+ case 6: /* 1st cpu port */
+ if (state->interface != PHY_INTERFACE_MODE_NA &&
+ state->interface != PHY_INTERFACE_MODE_RGMII &&
+ state->interface != PHY_INTERFACE_MODE_TRGMII)
+ goto unsupported;
+ break;
+ default:
+ dev_err(ds->dev, "%s: unsupported port: %i\n", __func__, port);
+unsupported:
+ linkmode_zero(supported);
+ return;
+ }
+
+ phylink_set_port_modes(mask);
+ phylink_set(mask, Autoneg);
+
+ if (state->interface == PHY_INTERFACE_MODE_TRGMII) {
+ phylink_set(mask, 1000baseT_Full);
+ } else {
+ phylink_set(mask, 10baseT_Half);
+ phylink_set(mask, 10baseT_Full);
+ phylink_set(mask, 100baseT_Half);
+ phylink_set(mask, 100baseT_Full);
+
+ if (state->interface != PHY_INTERFACE_MODE_MII) {
+ /* This switch only supports 1G full-duplex. */
+ phylink_set(mask, 1000baseT_Full);
+ if (port == 5)
+ phylink_set(mask, 1000baseX_Full);
+ }
+ }
+
+ phylink_set(mask, Pause);
+ phylink_set(mask, Asym_Pause);
+
+ linkmode_and(supported, supported, mask);
+ linkmode_and(state->advertising, state->advertising, mask);
+}
+
+static int
+mt7530_phylink_mac_link_state(struct dsa_switch *ds, int port,
+ struct phylink_link_state *state)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 pmsr;
+
+ if (port < 0 || port >= MT7530_NUM_PORTS)
+ return -EINVAL;
+
+ pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
+
+ state->link = (pmsr & PMSR_LINK);
+ state->an_complete = state->link;
+ state->duplex = !!(pmsr & PMSR_DPX);
+
+ switch (pmsr & PMSR_SPEED_MASK) {
+ case PMSR_SPEED_10:
+ state->speed = SPEED_10;
+ break;
+ case PMSR_SPEED_100:
+ state->speed = SPEED_100;
+ break;
+ case PMSR_SPEED_1000:
+ state->speed = SPEED_1000;
+ break;
+ default:
+ state->speed = SPEED_UNKNOWN;
+ break;
+ }
+
+ state->pause &= ~(MLO_PAUSE_RX | MLO_PAUSE_TX);
+ if (pmsr & PMSR_RX_FC)
+ state->pause |= MLO_PAUSE_RX;
+ if (pmsr & PMSR_TX_FC)
+ state->pause |= MLO_PAUSE_TX;
+
+ return 1;
+}
+
+static int mt7530_get_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 eeecr, pmsr;
+
+ e->eee_enabled = !!(priv->eee_enable & BIT(port));
+
+ if (e->eee_enabled) {
+ eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
+ e->tx_lpi_enabled = !(eeecr & LPI_MODE_EN);
+ e->tx_lpi_timer = (eeecr >> 4) & 0xFFF;
+ pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
+ e->eee_active = e->eee_enabled && !!(pmsr & PMSR_EEE1G);
+ } else {
+ e->tx_lpi_enabled = 0;
+ e->tx_lpi_timer = 0;
+ e->eee_active = 0;
+ }
+
+ return 0;
+}
+
+static int mt7530_set_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 eeecr;
+
+ if (e->tx_lpi_enabled && e->tx_lpi_timer > 0xFFF)
+ return -EINVAL;
+
+ if (e->eee_enabled) {
+ priv->eee_enable |= BIT(port);
+ //MT7530_PMEEECR_P
+ eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
+ eeecr &= 0xFFFF0000;
+ if (!e->tx_lpi_enabled)
+ eeecr |= LPI_MODE_EN;
+ eeecr |= LPI_THRESH(e->tx_lpi_timer);
+ mt7530_write(priv, MT7530_PMEEECR_P(port), eeecr);
+ } else {
+ priv->eee_enable &= ~(BIT(port));
+ }
+
+ return 0;
+}
+
+static const struct dsa_switch_ops mt7530_switch_ops = {
+ .get_tag_protocol = mtk_get_tag_protocol,
+ .setup = mt7530_setup,
+ .get_strings = mt7530_get_strings,
+ .phy_read = mt7530_phy_read,
+ .phy_write = mt7530_phy_write,
+ .get_ethtool_stats = mt7530_get_ethtool_stats,
+ .get_sset_count = mt7530_get_sset_count,
+ .port_enable = mt7530_port_enable,
+ .port_disable = mt7530_port_disable,
+ .port_stp_state_set = mt7530_stp_state_set,
+ .port_bridge_join = mt7530_port_bridge_join,
+ .port_bridge_leave = mt7530_port_bridge_leave,
+ .port_fdb_add = mt7530_port_fdb_add,
+ .port_fdb_del = mt7530_port_fdb_del,
+ .port_fdb_dump = mt7530_port_fdb_dump,
+ .port_vlan_filtering = mt7530_port_vlan_filtering,
+ .port_vlan_prepare = mt7530_port_vlan_prepare,
+ .port_vlan_add = mt7530_port_vlan_add,
+ .port_vlan_del = mt7530_port_vlan_del,
+ .port_mirror_add = mt7530_port_mirror_add,
+ .port_mirror_del = mt7530_port_mirror_del,
+ .phylink_validate = mt7530_phylink_validate,
+ .phylink_mac_link_state = mt7530_phylink_mac_link_state,
+ .phylink_mac_config = mt7530_phylink_mac_config,
+ .phylink_mac_link_down = mt7530_phylink_mac_link_down,
+ .phylink_mac_link_up = mt7530_phylink_mac_link_up,
+ .get_mac_eee = mt7530_get_mac_eee,
+ .set_mac_eee = mt7530_set_mac_eee,
+};
+
+static const struct of_device_id mt7530_of_match[] = {
+ { .compatible = "mediatek,mt7621", .data = (void *)ID_MT7621, },
+ { .compatible = "mediatek,mt7530", .data = (void *)ID_MT7530, },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mt7530_of_match);
+
+static int
+mt7530_probe(struct mdio_device *mdiodev)
+{
+ struct mt7530_priv *priv;
+ struct device_node *dn;
+
+ dn = mdiodev->dev.of_node;
+
+ priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->ds = dsa_switch_alloc(&mdiodev->dev, DSA_MAX_PORTS);
+ if (!priv->ds)
+ return -ENOMEM;
+
+ /* Use medatek,mcm property to distinguish hardware type that would
+ * casues a little bit differences on power-on sequence.
+ */
+ priv->mcm = of_property_read_bool(dn, "mediatek,mcm");
+ if (priv->mcm) {
+ dev_info(&mdiodev->dev, "MT7530 adapts as multi-chip module\n");
+
+ priv->rstc = devm_reset_control_get(&mdiodev->dev, "mcm");
+ if (IS_ERR(priv->rstc)) {
+ dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
+ return PTR_ERR(priv->rstc);
+ }
+ }
+
+ /* Get the hardware identifier from the devicetree node.
+ * We will need it for some of the clock and regulator setup.
+ */
+ priv->id = (unsigned int)(unsigned long)
+ of_device_get_match_data(&mdiodev->dev);
+
+ if (priv->id == ID_MT7530) {
+ priv->core_pwr = devm_regulator_get(&mdiodev->dev, "core");
+ if (IS_ERR(priv->core_pwr))
+ return PTR_ERR(priv->core_pwr);
+
+ priv->io_pwr = devm_regulator_get(&mdiodev->dev, "io");
+ if (IS_ERR(priv->io_pwr))
+ return PTR_ERR(priv->io_pwr);
+ }
+
+ /* Not MCM that indicates switch works as the remote standalone
+ * integrated circuit so the GPIO pin would be used to complete
+ * the reset, otherwise memory-mapped register accessing used
+ * through syscon provides in the case of MCM.
+ */
+ if (!priv->mcm) {
+ priv->reset = devm_gpiod_get_optional(&mdiodev->dev, "reset",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(priv->reset)) {
+ dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
+ return PTR_ERR(priv->reset);
+ }
+ }
+
+ priv->bus = mdiodev->bus;
+ priv->dev = &mdiodev->dev;
+ priv->ds->priv = priv;
+ priv->ds->ops = &mt7530_switch_ops;
+ mutex_init(&priv->reg_mutex);
+ dev_set_drvdata(&mdiodev->dev, priv);
+
+ return dsa_register_switch(priv->ds);
+}
+
+static void
+mt7530_remove(struct mdio_device *mdiodev)
+{
+ struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
+ int ret = 0;
+
+ ret = regulator_disable(priv->core_pwr);
+ if (ret < 0)
+ dev_err(priv->dev,
+ "Failed to disable core power: %d\n", ret);
+
+ ret = regulator_disable(priv->io_pwr);
+ if (ret < 0)
+ dev_err(priv->dev, "Failed to disable io pwr: %d\n",
+ ret);
+
+ dsa_unregister_switch(priv->ds);
+ mutex_destroy(&priv->reg_mutex);
+}
+
+static struct mdio_driver mt7530_mdio_driver = {
+ .probe = mt7530_probe,
+ .remove = mt7530_remove,
+ .mdiodrv.driver = {
+ .name = "mt7530",
+ .of_match_table = mt7530_of_match,
+ },
+};
+
+mdio_module_driver(mt7530_mdio_driver);
+
+MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
+MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch");
+MODULE_LICENSE("GPL");