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path: root/drivers/net/dsa/mt7530.c
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Diffstat (limited to 'drivers/net/dsa/mt7530.c')
-rw-r--r--drivers/net/dsa/mt7530.c3417
1 files changed, 3417 insertions, 0 deletions
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
new file mode 100644
index 000000000..b988c8a40
--- /dev/null
+++ b/drivers/net/dsa/mt7530.c
@@ -0,0 +1,3417 @@
+// 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_irq.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 <linux/gpio/driver.h>
+#include <net/dsa.h>
+
+#include "mt7530.h"
+
+static struct mt753x_pcs *pcs_to_mt753x_pcs(struct phylink_pcs *pcs)
+{
+ return container_of(pcs, struct mt753x_pcs, pcs);
+}
+
+/* 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"),
+};
+
+/* Since phy_device has not yet been created and
+ * phy_{read,write}_mmd_indirect is not available, we provide our own
+ * core_{read,write}_mmd_indirect with core_{clear,write,set} wrappers
+ * to complete this function.
+ */
+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_unlocked_read(struct mt7530_dummy_poll *p)
+{
+ return mt7530_mii_read(p->priv, p->reg);
+}
+
+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[1] |= ATA2_IVL;
+ reg[1] |= ATA2_FID(FID_BRIDGED);
+ 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]);
+}
+
+/* Set up switch core clock for MT7530 */
+static void mt7530_pll_setup(struct mt7530_priv *priv)
+{
+ /* Disable core clock */
+ core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+
+ /* Disable PLL */
+ core_write(priv, CORE_GSWPLL_GRP1, 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));
+
+ udelay(20);
+
+ /* Enable core clock */
+ core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
+}
+
+/* Setup port 6 interface mode and TRGMII TX circuit */
+static int
+mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 ncpo1, ssc_delta, trgint, 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 (interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ trgint = 0;
+ break;
+ case PHY_INTERFACE_MODE_TRGMII:
+ trgint = 1;
+ if (xtal == HWTRAP_XTAL_25MHZ)
+ ssc_delta = 0x57;
+ else
+ ssc_delta = 0x87;
+ 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 interface %d not supported\n",
+ interface);
+ return -EINVAL;
+ }
+
+ mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
+ P6_INTF_MODE(trgint));
+
+ if (trgint) {
+ /* Disable the MT7530 TRGMII clocks */
+ core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN);
+
+ /* Setup the MT7530 TRGMII Tx Clock */
+ 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);
+
+ /* Enable the MT7530 TRGMII clocks */
+ core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN);
+ }
+
+ return 0;
+}
+
+static bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv)
+{
+ u32 val;
+
+ val = mt7530_read(priv, MT7531_TOP_SIG_SR);
+
+ return (val & PAD_DUAL_SGMII_EN) != 0;
+}
+
+static int
+mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface)
+{
+ return 0;
+}
+
+static void
+mt7531_pll_setup(struct mt7530_priv *priv)
+{
+ u32 top_sig;
+ u32 hwstrap;
+ u32 xtal;
+ u32 val;
+
+ if (mt7531_dual_sgmii_supported(priv))
+ return;
+
+ val = mt7530_read(priv, MT7531_CREV);
+ top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR);
+ hwstrap = mt7530_read(priv, MT7531_HWTRAP);
+ if ((val & CHIP_REV_M) > 0)
+ xtal = (top_sig & PAD_MCM_SMI_EN) ? HWTRAP_XTAL_FSEL_40MHZ :
+ HWTRAP_XTAL_FSEL_25MHZ;
+ else
+ xtal = hwstrap & HWTRAP_XTAL_FSEL_MASK;
+
+ /* Step 1 : Disable MT7531 COREPLL */
+ val = mt7530_read(priv, MT7531_PLLGP_EN);
+ val &= ~EN_COREPLL;
+ mt7530_write(priv, MT7531_PLLGP_EN, val);
+
+ /* Step 2: switch to XTAL output */
+ val = mt7530_read(priv, MT7531_PLLGP_EN);
+ val |= SW_CLKSW;
+ mt7530_write(priv, MT7531_PLLGP_EN, val);
+
+ val = mt7530_read(priv, MT7531_PLLGP_CR0);
+ val &= ~RG_COREPLL_EN;
+ mt7530_write(priv, MT7531_PLLGP_CR0, val);
+
+ /* Step 3: disable PLLGP and enable program PLLGP */
+ val = mt7530_read(priv, MT7531_PLLGP_EN);
+ val |= SW_PLLGP;
+ mt7530_write(priv, MT7531_PLLGP_EN, val);
+
+ /* Step 4: program COREPLL output frequency to 500MHz */
+ val = mt7530_read(priv, MT7531_PLLGP_CR0);
+ val &= ~RG_COREPLL_POSDIV_M;
+ val |= 2 << RG_COREPLL_POSDIV_S;
+ mt7530_write(priv, MT7531_PLLGP_CR0, val);
+ usleep_range(25, 35);
+
+ switch (xtal) {
+ case HWTRAP_XTAL_FSEL_25MHZ:
+ val = mt7530_read(priv, MT7531_PLLGP_CR0);
+ val &= ~RG_COREPLL_SDM_PCW_M;
+ val |= 0x140000 << RG_COREPLL_SDM_PCW_S;
+ mt7530_write(priv, MT7531_PLLGP_CR0, val);
+ break;
+ case HWTRAP_XTAL_FSEL_40MHZ:
+ val = mt7530_read(priv, MT7531_PLLGP_CR0);
+ val &= ~RG_COREPLL_SDM_PCW_M;
+ val |= 0x190000 << RG_COREPLL_SDM_PCW_S;
+ mt7530_write(priv, MT7531_PLLGP_CR0, val);
+ break;
+ }
+
+ /* Set feedback divide ratio update signal to high */
+ val = mt7530_read(priv, MT7531_PLLGP_CR0);
+ val |= RG_COREPLL_SDM_PCW_CHG;
+ mt7530_write(priv, MT7531_PLLGP_CR0, val);
+ /* Wait for at least 16 XTAL clocks */
+ usleep_range(10, 20);
+
+ /* Step 5: set feedback divide ratio update signal to low */
+ val = mt7530_read(priv, MT7531_PLLGP_CR0);
+ val &= ~RG_COREPLL_SDM_PCW_CHG;
+ mt7530_write(priv, MT7531_PLLGP_CR0, val);
+
+ /* Enable 325M clock for SGMII */
+ mt7530_write(priv, MT7531_ANA_PLLGP_CR5, 0xad0000);
+
+ /* Enable 250SSC clock for RGMII */
+ mt7530_write(priv, MT7531_ANA_PLLGP_CR2, 0x4f40000);
+
+ /* Step 6: Enable MT7531 PLL */
+ val = mt7530_read(priv, MT7531_PLLGP_CR0);
+ val |= RG_COREPLL_EN;
+ mt7530_write(priv, MT7531_PLLGP_CR0, val);
+
+ val = mt7530_read(priv, MT7531_PLLGP_EN);
+ val |= EN_COREPLL;
+ mt7530_write(priv, MT7531_PLLGP_EN, val);
+ usleep_range(25, 35);
+}
+
+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 int mt7530_phy_read(struct mt7530_priv *priv, int port, int regnum)
+{
+ return mdiobus_read_nested(priv->bus, port, regnum);
+}
+
+static int mt7530_phy_write(struct mt7530_priv *priv, int port, int regnum,
+ u16 val)
+{
+ return mdiobus_write_nested(priv->bus, port, regnum, val);
+}
+
+static int
+mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
+ int regnum)
+{
+ struct mii_bus *bus = priv->bus;
+ struct mt7530_dummy_poll p;
+ u32 reg, val;
+ int ret;
+
+ INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
+ MT7531_MDIO_DEV_ADDR(devad) | regnum;
+ mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ reg = MT7531_MDIO_CL45_READ | MT7531_MDIO_PHY_ADDR(port) |
+ MT7531_MDIO_DEV_ADDR(devad);
+ mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ ret = val & MT7531_MDIO_RW_DATA_MASK;
+out:
+ mutex_unlock(&bus->mdio_lock);
+
+ return ret;
+}
+
+static int
+mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
+ int regnum, u32 data)
+{
+ struct mii_bus *bus = priv->bus;
+ struct mt7530_dummy_poll p;
+ u32 val, reg;
+ int ret;
+
+ INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
+ MT7531_MDIO_DEV_ADDR(devad) | regnum;
+ mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ reg = MT7531_MDIO_CL45_WRITE | MT7531_MDIO_PHY_ADDR(port) |
+ MT7531_MDIO_DEV_ADDR(devad) | data;
+ mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+out:
+ mutex_unlock(&bus->mdio_lock);
+
+ return ret;
+}
+
+static int
+mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
+{
+ struct mii_bus *bus = priv->bus;
+ struct mt7530_dummy_poll p;
+ int ret;
+ u32 val;
+
+ INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ val = MT7531_MDIO_CL22_READ | MT7531_MDIO_PHY_ADDR(port) |
+ MT7531_MDIO_REG_ADDR(regnum);
+
+ mt7530_mii_write(priv, MT7531_PHY_IAC, val | MT7531_PHY_ACS_ST);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ ret = val & MT7531_MDIO_RW_DATA_MASK;
+out:
+ mutex_unlock(&bus->mdio_lock);
+
+ return ret;
+}
+
+static int
+mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
+ u16 data)
+{
+ struct mii_bus *bus = priv->bus;
+ struct mt7530_dummy_poll p;
+ int ret;
+ u32 reg;
+
+ INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
+ !(reg & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+ reg = MT7531_MDIO_CL22_WRITE | MT7531_MDIO_PHY_ADDR(port) |
+ MT7531_MDIO_REG_ADDR(regnum) | data;
+
+ mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
+
+ ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
+ !(reg & MT7531_PHY_ACS_ST), 20, 100000);
+ if (ret < 0) {
+ dev_err(priv->dev, "poll timeout\n");
+ goto out;
+ }
+
+out:
+ mutex_unlock(&bus->mdio_lock);
+
+ return ret;
+}
+
+static int
+mt7531_ind_phy_read(struct mt7530_priv *priv, int port, int regnum)
+{
+ int devad;
+ int ret;
+
+ if (regnum & MII_ADDR_C45) {
+ devad = (regnum >> MII_DEVADDR_C45_SHIFT) & 0x1f;
+ ret = mt7531_ind_c45_phy_read(priv, port, devad,
+ regnum & MII_REGADDR_C45_MASK);
+ } else {
+ ret = mt7531_ind_c22_phy_read(priv, port, regnum);
+ }
+
+ return ret;
+}
+
+static int
+mt7531_ind_phy_write(struct mt7530_priv *priv, int port, int regnum,
+ u16 data)
+{
+ int devad;
+ int ret;
+
+ if (regnum & MII_ADDR_C45) {
+ devad = (regnum >> MII_DEVADDR_C45_SHIFT) & 0x1f;
+ ret = mt7531_ind_c45_phy_write(priv, port, devad,
+ regnum & MII_REGADDR_C45_MASK,
+ data);
+ } else {
+ ret = mt7531_ind_c22_phy_write(priv, port, regnum, data);
+ }
+
+ return ret;
+}
+
+static int
+mt753x_phy_read(struct mii_bus *bus, int port, int regnum)
+{
+ struct mt7530_priv *priv = bus->priv;
+
+ return priv->info->phy_read(priv, port, regnum);
+}
+
+static int
+mt753x_phy_write(struct mii_bus *bus, int port, int regnum, u16 val)
+{
+ struct mt7530_priv *priv = bus->priv;
+
+ return priv->info->phy_write(priv, 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 int
+mt7530_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
+{
+ struct mt7530_priv *priv = ds->priv;
+ unsigned int secs = msecs / 1000;
+ unsigned int tmp_age_count;
+ unsigned int error = -1;
+ unsigned int age_count;
+ unsigned int age_unit;
+
+ /* Applied timer is (AGE_CNT + 1) * (AGE_UNIT + 1) seconds */
+ if (secs < 1 || secs > (AGE_CNT_MAX + 1) * (AGE_UNIT_MAX + 1))
+ return -ERANGE;
+
+ /* iterate through all possible age_count to find the closest pair */
+ for (tmp_age_count = 0; tmp_age_count <= AGE_CNT_MAX; ++tmp_age_count) {
+ unsigned int tmp_age_unit = secs / (tmp_age_count + 1) - 1;
+
+ if (tmp_age_unit <= AGE_UNIT_MAX) {
+ unsigned int tmp_error = secs -
+ (tmp_age_count + 1) * (tmp_age_unit + 1);
+
+ /* found a closer pair */
+ if (error > tmp_error) {
+ error = tmp_error;
+ age_count = tmp_age_count;
+ age_unit = tmp_age_unit;
+ }
+
+ /* found the exact match, so break the loop */
+ if (!error)
+ break;
+ }
+ }
+
+ mt7530_write(priv, MT7530_AAC, AGE_CNT(age_count) | AGE_UNIT(age_unit));
+
+ return 0;
+}
+
+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;
+ fallthrough;
+ 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 void
+mt753x_trap_frames(struct mt7530_priv *priv)
+{
+ /* Trap BPDUs to the CPU port(s) */
+ mt7530_rmw(priv, MT753X_BPC, MT753X_BPDU_PORT_FW_MASK,
+ MT753X_BPDU_CPU_ONLY);
+
+ /* Trap 802.1X PAE frames to the CPU port(s) */
+ mt7530_rmw(priv, MT753X_BPC, MT753X_PAE_PORT_FW_MASK,
+ MT753X_PAE_PORT_FW(MT753X_BPDU_CPU_ONLY));
+
+ /* Trap LLDP frames with :0E MAC DA to the CPU port(s) */
+ mt7530_rmw(priv, MT753X_RGAC2, MT753X_R0E_PORT_FW_MASK,
+ MT753X_R0E_PORT_FW(MT753X_BPDU_CPU_ONLY));
+}
+
+static int
+mt753x_cpu_port_enable(struct dsa_switch *ds, int port)
+{
+ struct mt7530_priv *priv = ds->priv;
+ int ret;
+
+ /* Setup max capability of CPU port at first */
+ if (priv->info->cpu_port_config) {
+ ret = priv->info->cpu_port_config(ds, port);
+ if (ret)
+ return ret;
+ }
+
+ /* Enable Mediatek header mode on the cpu port */
+ mt7530_write(priv, MT7530_PVC_P(port),
+ PORT_SPEC_TAG);
+
+ /* Enable flooding on the CPU port */
+ mt7530_set(priv, MT7530_MFC, BC_FFP(BIT(port)) | UNM_FFP(BIT(port)) |
+ UNU_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)));
+
+ /* Set to fallback mode for independent VLAN learning */
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
+ MT7530_PORT_FALLBACK_MODE);
+
+ return 0;
+}
+
+static int
+mt7530_port_enable(struct dsa_switch *ds, int port,
+ struct phy_device *phy)
+{
+ struct dsa_port *dp = dsa_to_port(ds, port);
+ struct mt7530_priv *priv = ds->priv;
+
+ 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.
+ */
+ if (dsa_port_is_user(dp)) {
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+
+ priv->ports[port].pm |= PCR_MATRIX(BIT(cpu_dp->index));
+ }
+ priv->ports[port].enable = true;
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
+ priv->ports[port].pm);
+ mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
+
+ mutex_unlock(&priv->reg_mutex);
+
+ return 0;
+}
+
+static void
+mt7530_port_disable(struct dsa_switch *ds, int port)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ 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_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
+
+ mutex_unlock(&priv->reg_mutex);
+}
+
+static int
+mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
+{
+ struct mt7530_priv *priv = ds->priv;
+ struct mii_bus *bus = priv->bus;
+ int length;
+ u32 val;
+
+ /* When a new MTU is set, DSA always set the CPU port's MTU to the
+ * largest MTU of the slave ports. Because the switch only has a global
+ * RX length register, only allowing CPU port here is enough.
+ */
+ if (!dsa_is_cpu_port(ds, port))
+ return 0;
+
+ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
+
+ val = mt7530_mii_read(priv, MT7530_GMACCR);
+ val &= ~MAX_RX_PKT_LEN_MASK;
+
+ /* RX length also includes Ethernet header, MTK tag, and FCS length */
+ length = new_mtu + ETH_HLEN + MTK_HDR_LEN + ETH_FCS_LEN;
+ if (length <= 1522) {
+ val |= MAX_RX_PKT_LEN_1522;
+ } else if (length <= 1536) {
+ val |= MAX_RX_PKT_LEN_1536;
+ } else if (length <= 1552) {
+ val |= MAX_RX_PKT_LEN_1552;
+ } else {
+ val &= ~MAX_RX_JUMBO_MASK;
+ val |= MAX_RX_JUMBO(DIV_ROUND_UP(length, 1024));
+ val |= MAX_RX_PKT_LEN_JUMBO;
+ }
+
+ mt7530_mii_write(priv, MT7530_GMACCR, val);
+
+ mutex_unlock(&bus->mdio_lock);
+
+ return 0;
+}
+
+static int
+mt7530_port_max_mtu(struct dsa_switch *ds, int port)
+{
+ return MT7530_MAX_MTU;
+}
+
+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(FID_BRIDGED),
+ FID_PST(FID_BRIDGED, stp_state));
+}
+
+static int
+mt7530_port_pre_bridge_flags(struct dsa_switch *ds, int port,
+ struct switchdev_brport_flags flags,
+ struct netlink_ext_ack *extack)
+{
+ if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
+ BR_BCAST_FLOOD))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int
+mt7530_port_bridge_flags(struct dsa_switch *ds, int port,
+ struct switchdev_brport_flags flags,
+ struct netlink_ext_ack *extack)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ if (flags.mask & BR_LEARNING)
+ mt7530_rmw(priv, MT7530_PSC_P(port), SA_DIS,
+ flags.val & BR_LEARNING ? 0 : SA_DIS);
+
+ if (flags.mask & BR_FLOOD)
+ mt7530_rmw(priv, MT7530_MFC, UNU_FFP(BIT(port)),
+ flags.val & BR_FLOOD ? UNU_FFP(BIT(port)) : 0);
+
+ if (flags.mask & BR_MCAST_FLOOD)
+ mt7530_rmw(priv, MT7530_MFC, UNM_FFP(BIT(port)),
+ flags.val & BR_MCAST_FLOOD ? UNM_FFP(BIT(port)) : 0);
+
+ if (flags.mask & BR_BCAST_FLOOD)
+ mt7530_rmw(priv, MT7530_MFC, BC_FFP(BIT(port)),
+ flags.val & BR_BCAST_FLOOD ? BC_FFP(BIT(port)) : 0);
+
+ return 0;
+}
+
+static int
+mt7530_port_bridge_join(struct dsa_switch *ds, int port,
+ struct dsa_bridge bridge, bool *tx_fwd_offload,
+ struct netlink_ext_ack *extack)
+{
+ struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+ u32 port_bitmap = BIT(cpu_dp->index);
+ struct mt7530_priv *priv = ds->priv;
+
+ mutex_lock(&priv->reg_mutex);
+
+ dsa_switch_for_each_user_port(other_dp, ds) {
+ int other_port = other_dp->index;
+
+ if (dp == other_dp)
+ continue;
+
+ /* 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_port_offloads_bridge(other_dp, &bridge))
+ continue;
+
+ if (priv->ports[other_port].enable)
+ mt7530_set(priv, MT7530_PCR_P(other_port),
+ PCR_MATRIX(BIT(port)));
+ priv->ports[other_port].pm |= PCR_MATRIX(BIT(port));
+
+ port_bitmap |= BIT(other_port);
+ }
+
+ /* 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);
+
+ /* Set to fallback mode for independent VLAN learning */
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
+ MT7530_PORT_FALLBACK_MODE);
+
+ 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;
+
+ /* This is called after .port_bridge_leave when leaving a VLAN-aware
+ * bridge. Don't set standalone ports to fallback mode.
+ */
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, port)))
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
+ MT7530_PORT_FALLBACK_MODE);
+
+ mt7530_rmw(priv, MT7530_PVC_P(port),
+ VLAN_ATTR_MASK | PVC_EG_TAG_MASK | ACC_FRM_MASK,
+ VLAN_ATTR(MT7530_VLAN_TRANSPARENT) |
+ PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT) |
+ MT7530_VLAN_ACC_ALL);
+
+ /* Set PVID to 0 */
+ mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
+ G0_PORT_VID_DEF);
+
+ for (i = 0; i < MT7530_NUM_PORTS; i++) {
+ if (dsa_is_user_port(ds, i) &&
+ dsa_port_is_vlan_filtering(dsa_to_port(ds, 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) {
+ struct dsa_port *dp = dsa_to_port(ds, port);
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+
+ mt7530_write(priv, MT7530_PCR_P(cpu_dp->index),
+ PCR_MATRIX(dsa_user_ports(priv->ds)));
+ mt7530_write(priv, MT7530_PVC_P(cpu_dp->index), 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.
+ */
+ if (dsa_is_user_port(ds, port)) {
+ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
+ MT7530_PORT_SECURITY_MODE);
+ mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
+ G0_PORT_VID(priv->ports[port].pvid));
+
+ /* Only accept tagged frames if PVID is not set */
+ if (!priv->ports[port].pvid)
+ mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
+ MT7530_VLAN_ACC_TAGGED);
+
+ /* 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));
+ } else {
+ /* Also set CPU ports to the "user" VLAN port attribute, to
+ * allow VLAN classification, but keep the EG_TAG attribute as
+ * "consistent" (i.o.w. don't change its value) for packets
+ * received by the switch from the CPU, so that tagged packets
+ * are forwarded to user ports as tagged, and untagged as
+ * untagged.
+ */
+ mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK,
+ VLAN_ATTR(MT7530_VLAN_USER));
+ }
+}
+
+static void
+mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
+ struct dsa_bridge bridge)
+{
+ struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+ struct mt7530_priv *priv = ds->priv;
+
+ mutex_lock(&priv->reg_mutex);
+
+ dsa_switch_for_each_user_port(other_dp, ds) {
+ int other_port = other_dp->index;
+
+ if (dp == other_dp)
+ continue;
+
+ /* 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_port_offloads_bridge(other_dp, &bridge))
+ continue;
+
+ if (priv->ports[other_port].enable)
+ mt7530_clear(priv, MT7530_PCR_P(other_port),
+ PCR_MATRIX(BIT(port)));
+ priv->ports[other_port].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(cpu_dp->index)));
+ priv->ports[port].pm = PCR_MATRIX(BIT(cpu_dp->index));
+
+ /* 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);
+
+ mutex_unlock(&priv->reg_mutex);
+}
+
+static int
+mt7530_port_fdb_add(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid,
+ struct dsa_db db)
+{
+ 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 dsa_db db)
+{
+ 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_port_mdb_add(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_mdb *mdb,
+ struct dsa_db db)
+{
+ struct mt7530_priv *priv = ds->priv;
+ const u8 *addr = mdb->addr;
+ u16 vid = mdb->vid;
+ u8 port_mask = 0;
+ int ret;
+
+ mutex_lock(&priv->reg_mutex);
+
+ mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
+ if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
+ port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
+ & PORT_MAP_MASK;
+
+ port_mask |= BIT(port);
+ 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_mdb_del(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_mdb *mdb,
+ struct dsa_db db)
+{
+ struct mt7530_priv *priv = ds->priv;
+ const u8 *addr = mdb->addr;
+ u16 vid = mdb->vid;
+ u8 port_mask = 0;
+ int ret;
+
+ mutex_lock(&priv->reg_mutex);
+
+ mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
+ if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
+ port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
+ & PORT_MAP_MASK;
+
+ port_mask &= ~BIT(port);
+ mt7530_fdb_write(priv, vid, port_mask, addr, -1,
+ port_mask ? STATIC_ENT : STATIC_EMP);
+ ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
+
+ mutex_unlock(&priv->reg_mutex);
+
+ return ret;
+}
+
+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,
+ struct netlink_ext_ack *extack)
+{
+ struct dsa_port *dp = dsa_to_port(ds, port);
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+
+ 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, cpu_dp->index);
+ } else {
+ mt7530_port_set_vlan_unaware(ds, port);
+ }
+
+ return 0;
+}
+
+static void
+mt7530_hw_vlan_add(struct mt7530_priv *priv,
+ struct mt7530_hw_vlan_entry *entry)
+{
+ struct dsa_port *dp = dsa_to_port(priv->ds, entry->port);
+ u8 new_members;
+ u32 val;
+
+ new_members = entry->old_members | BIT(entry->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) | FID(FID_BRIDGED) |
+ VLAN_VALID;
+ mt7530_write(priv, MT7530_VAWD1, val);
+
+ /* Decide whether adding tag or not for those outgoing packets from the
+ * port inside the VLAN.
+ * 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.
+ */
+ if (dsa_port_is_cpu(dp))
+ val = MT7530_VLAN_EGRESS_STACK;
+ else if (entry->untagged)
+ val = MT7530_VLAN_EGRESS_UNTAG;
+ else
+ val = MT7530_VLAN_EGRESS_TAG;
+ mt7530_rmw(priv, MT7530_VAWD2,
+ ETAG_CTRL_P_MASK(entry->port),
+ ETAG_CTRL_P(entry->port, val));
+}
+
+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 (new_members) {
+ 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 int
+mt7530_setup_vlan0(struct mt7530_priv *priv)
+{
+ u32 val;
+
+ /* Validate the entry with independent learning, keep the original
+ * ingress tag attribute.
+ */
+ val = IVL_MAC | EG_CON | PORT_MEM(MT7530_ALL_MEMBERS) | FID(FID_BRIDGED) |
+ VLAN_VALID;
+ mt7530_write(priv, MT7530_VAWD1, val);
+
+ return mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, 0);
+}
+
+static int
+mt7530_port_vlan_add(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct netlink_ext_ack *extack)
+{
+ 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;
+
+ mutex_lock(&priv->reg_mutex);
+
+ mt7530_hw_vlan_entry_init(&new_entry, port, untagged);
+ mt7530_hw_vlan_update(priv, vlan->vid, &new_entry, mt7530_hw_vlan_add);
+
+ if (pvid) {
+ priv->ports[port].pvid = vlan->vid;
+
+ /* Accept all frames if PVID is set */
+ mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
+ MT7530_VLAN_ACC_ALL);
+
+ /* Only configure PVID if VLAN filtering is enabled */
+ if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
+ mt7530_rmw(priv, MT7530_PPBV1_P(port),
+ G0_PORT_VID_MASK,
+ G0_PORT_VID(vlan->vid));
+ } else if (vlan->vid && priv->ports[port].pvid == vlan->vid) {
+ /* This VLAN is overwritten without PVID, so unset it */
+ priv->ports[port].pvid = G0_PORT_VID_DEF;
+
+ /* Only accept tagged frames if the port is VLAN-aware */
+ if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
+ mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
+ MT7530_VLAN_ACC_TAGGED);
+
+ mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
+ G0_PORT_VID_DEF);
+ }
+
+ mutex_unlock(&priv->reg_mutex);
+
+ return 0;
+}
+
+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;
+
+ mutex_lock(&priv->reg_mutex);
+
+ mt7530_hw_vlan_entry_init(&target_entry, port, 0);
+ mt7530_hw_vlan_update(priv, vlan->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 (priv->ports[port].pvid == vlan->vid) {
+ priv->ports[port].pvid = G0_PORT_VID_DEF;
+
+ /* Only accept tagged frames if the port is VLAN-aware */
+ if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
+ mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
+ MT7530_VLAN_ACC_TAGGED);
+
+ mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
+ G0_PORT_VID_DEF);
+ }
+
+
+ mutex_unlock(&priv->reg_mutex);
+
+ return 0;
+}
+
+static int mt753x_mirror_port_get(unsigned int id, u32 val)
+{
+ return (id == ID_MT7531) ? MT7531_MIRROR_PORT_GET(val) :
+ MIRROR_PORT(val);
+}
+
+static int mt753x_mirror_port_set(unsigned int id, u32 val)
+{
+ return (id == ID_MT7531) ? MT7531_MIRROR_PORT_SET(val) :
+ MIRROR_PORT(val);
+}
+
+static int mt753x_port_mirror_add(struct dsa_switch *ds, int port,
+ struct dsa_mall_mirror_tc_entry *mirror,
+ bool ingress, struct netlink_ext_ack *extack)
+{
+ struct mt7530_priv *priv = ds->priv;
+ int monitor_port;
+ u32 val;
+
+ /* Check for existent entry */
+ if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
+ return -EEXIST;
+
+ val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
+
+ /* MT7530 only supports one monitor port */
+ monitor_port = mt753x_mirror_port_get(priv->id, val);
+ if (val & MT753X_MIRROR_EN(priv->id) &&
+ monitor_port != mirror->to_local_port)
+ return -EEXIST;
+
+ val |= MT753X_MIRROR_EN(priv->id);
+ val &= ~MT753X_MIRROR_MASK(priv->id);
+ val |= mt753x_mirror_port_set(priv->id, mirror->to_local_port);
+ mt7530_write(priv, MT753X_MIRROR_REG(priv->id), 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 mt753x_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, MT753X_MIRROR_REG(priv->id));
+ val &= ~MT753X_MIRROR_EN(priv->id);
+ mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
+ }
+}
+
+static enum dsa_tag_protocol
+mtk_get_tag_protocol(struct dsa_switch *ds, int port,
+ enum dsa_tag_protocol mp)
+{
+ return DSA_TAG_PROTO_MTK;
+}
+
+#ifdef CONFIG_GPIOLIB
+static inline u32
+mt7530_gpio_to_bit(unsigned int offset)
+{
+ /* Map GPIO offset to register bit
+ * [ 2: 0] port 0 LED 0..2 as GPIO 0..2
+ * [ 6: 4] port 1 LED 0..2 as GPIO 3..5
+ * [10: 8] port 2 LED 0..2 as GPIO 6..8
+ * [14:12] port 3 LED 0..2 as GPIO 9..11
+ * [18:16] port 4 LED 0..2 as GPIO 12..14
+ */
+ return BIT(offset + offset / 3);
+}
+
+static int
+mt7530_gpio_get(struct gpio_chip *gc, unsigned int offset)
+{
+ struct mt7530_priv *priv = gpiochip_get_data(gc);
+ u32 bit = mt7530_gpio_to_bit(offset);
+
+ return !!(mt7530_read(priv, MT7530_LED_GPIO_DATA) & bit);
+}
+
+static void
+mt7530_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
+{
+ struct mt7530_priv *priv = gpiochip_get_data(gc);
+ u32 bit = mt7530_gpio_to_bit(offset);
+
+ if (value)
+ mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
+ else
+ mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
+}
+
+static int
+mt7530_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+ struct mt7530_priv *priv = gpiochip_get_data(gc);
+ u32 bit = mt7530_gpio_to_bit(offset);
+
+ return (mt7530_read(priv, MT7530_LED_GPIO_DIR) & bit) ?
+ GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
+}
+
+static int
+mt7530_gpio_direction_input(struct gpio_chip *gc, unsigned int offset)
+{
+ struct mt7530_priv *priv = gpiochip_get_data(gc);
+ u32 bit = mt7530_gpio_to_bit(offset);
+
+ mt7530_clear(priv, MT7530_LED_GPIO_OE, bit);
+ mt7530_clear(priv, MT7530_LED_GPIO_DIR, bit);
+
+ return 0;
+}
+
+static int
+mt7530_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value)
+{
+ struct mt7530_priv *priv = gpiochip_get_data(gc);
+ u32 bit = mt7530_gpio_to_bit(offset);
+
+ mt7530_set(priv, MT7530_LED_GPIO_DIR, bit);
+
+ if (value)
+ mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
+ else
+ mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
+
+ mt7530_set(priv, MT7530_LED_GPIO_OE, bit);
+
+ return 0;
+}
+
+static int
+mt7530_setup_gpio(struct mt7530_priv *priv)
+{
+ struct device *dev = priv->dev;
+ struct gpio_chip *gc;
+
+ gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
+ if (!gc)
+ return -ENOMEM;
+
+ mt7530_write(priv, MT7530_LED_GPIO_OE, 0);
+ mt7530_write(priv, MT7530_LED_GPIO_DIR, 0);
+ mt7530_write(priv, MT7530_LED_IO_MODE, 0);
+
+ gc->label = "mt7530";
+ gc->parent = dev;
+ gc->owner = THIS_MODULE;
+ gc->get_direction = mt7530_gpio_get_direction;
+ gc->direction_input = mt7530_gpio_direction_input;
+ gc->direction_output = mt7530_gpio_direction_output;
+ gc->get = mt7530_gpio_get;
+ gc->set = mt7530_gpio_set;
+ gc->base = -1;
+ gc->ngpio = 15;
+ gc->can_sleep = true;
+
+ return devm_gpiochip_add_data(dev, gc, priv);
+}
+#endif /* CONFIG_GPIOLIB */
+
+static irqreturn_t
+mt7530_irq_thread_fn(int irq, void *dev_id)
+{
+ struct mt7530_priv *priv = dev_id;
+ bool handled = false;
+ u32 val;
+ int p;
+
+ mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
+ val = mt7530_mii_read(priv, MT7530_SYS_INT_STS);
+ mt7530_mii_write(priv, MT7530_SYS_INT_STS, val);
+ mutex_unlock(&priv->bus->mdio_lock);
+
+ for (p = 0; p < MT7530_NUM_PHYS; p++) {
+ if (BIT(p) & val) {
+ unsigned int irq;
+
+ irq = irq_find_mapping(priv->irq_domain, p);
+ handle_nested_irq(irq);
+ handled = true;
+ }
+ }
+
+ return IRQ_RETVAL(handled);
+}
+
+static void
+mt7530_irq_mask(struct irq_data *d)
+{
+ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+ priv->irq_enable &= ~BIT(d->hwirq);
+}
+
+static void
+mt7530_irq_unmask(struct irq_data *d)
+{
+ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+ priv->irq_enable |= BIT(d->hwirq);
+}
+
+static void
+mt7530_irq_bus_lock(struct irq_data *d)
+{
+ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+ mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
+}
+
+static void
+mt7530_irq_bus_sync_unlock(struct irq_data *d)
+{
+ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
+
+ mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
+ mutex_unlock(&priv->bus->mdio_lock);
+}
+
+static struct irq_chip mt7530_irq_chip = {
+ .name = KBUILD_MODNAME,
+ .irq_mask = mt7530_irq_mask,
+ .irq_unmask = mt7530_irq_unmask,
+ .irq_bus_lock = mt7530_irq_bus_lock,
+ .irq_bus_sync_unlock = mt7530_irq_bus_sync_unlock,
+};
+
+static int
+mt7530_irq_map(struct irq_domain *domain, unsigned int irq,
+ irq_hw_number_t hwirq)
+{
+ irq_set_chip_data(irq, domain->host_data);
+ irq_set_chip_and_handler(irq, &mt7530_irq_chip, handle_simple_irq);
+ irq_set_nested_thread(irq, true);
+ irq_set_noprobe(irq);
+
+ return 0;
+}
+
+static const struct irq_domain_ops mt7530_irq_domain_ops = {
+ .map = mt7530_irq_map,
+ .xlate = irq_domain_xlate_onecell,
+};
+
+static void
+mt7530_setup_mdio_irq(struct mt7530_priv *priv)
+{
+ struct dsa_switch *ds = priv->ds;
+ int p;
+
+ for (p = 0; p < MT7530_NUM_PHYS; p++) {
+ if (BIT(p) & ds->phys_mii_mask) {
+ unsigned int irq;
+
+ irq = irq_create_mapping(priv->irq_domain, p);
+ ds->slave_mii_bus->irq[p] = irq;
+ }
+ }
+}
+
+static int
+mt7530_setup_irq(struct mt7530_priv *priv)
+{
+ struct device *dev = priv->dev;
+ struct device_node *np = dev->of_node;
+ int ret;
+
+ if (!of_property_read_bool(np, "interrupt-controller")) {
+ dev_info(dev, "no interrupt support\n");
+ return 0;
+ }
+
+ priv->irq = of_irq_get(np, 0);
+ if (priv->irq <= 0) {
+ dev_err(dev, "failed to get parent IRQ: %d\n", priv->irq);
+ return priv->irq ? : -EINVAL;
+ }
+
+ priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
+ &mt7530_irq_domain_ops, priv);
+ if (!priv->irq_domain) {
+ dev_err(dev, "failed to create IRQ domain\n");
+ return -ENOMEM;
+ }
+
+ /* This register must be set for MT7530 to properly fire interrupts */
+ if (priv->id != ID_MT7531)
+ mt7530_set(priv, MT7530_TOP_SIG_CTRL, TOP_SIG_CTRL_NORMAL);
+
+ ret = request_threaded_irq(priv->irq, NULL, mt7530_irq_thread_fn,
+ IRQF_ONESHOT, KBUILD_MODNAME, priv);
+ if (ret) {
+ irq_domain_remove(priv->irq_domain);
+ dev_err(dev, "failed to request IRQ: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void
+mt7530_free_mdio_irq(struct mt7530_priv *priv)
+{
+ int p;
+
+ for (p = 0; p < MT7530_NUM_PHYS; p++) {
+ if (BIT(p) & priv->ds->phys_mii_mask) {
+ unsigned int irq;
+
+ irq = irq_find_mapping(priv->irq_domain, p);
+ irq_dispose_mapping(irq);
+ }
+ }
+}
+
+static void
+mt7530_free_irq_common(struct mt7530_priv *priv)
+{
+ free_irq(priv->irq, priv);
+ irq_domain_remove(priv->irq_domain);
+}
+
+static void
+mt7530_free_irq(struct mt7530_priv *priv)
+{
+ mt7530_free_mdio_irq(priv);
+ mt7530_free_irq_common(priv);
+}
+
+static int
+mt7530_setup_mdio(struct mt7530_priv *priv)
+{
+ struct dsa_switch *ds = priv->ds;
+ struct device *dev = priv->dev;
+ struct mii_bus *bus;
+ static int idx;
+ int ret;
+
+ bus = devm_mdiobus_alloc(dev);
+ if (!bus)
+ return -ENOMEM;
+
+ ds->slave_mii_bus = bus;
+ bus->priv = priv;
+ bus->name = KBUILD_MODNAME "-mii";
+ snprintf(bus->id, MII_BUS_ID_SIZE, KBUILD_MODNAME "-%d", idx++);
+ bus->read = mt753x_phy_read;
+ bus->write = mt753x_phy_write;
+ bus->parent = dev;
+ bus->phy_mask = ~ds->phys_mii_mask;
+
+ if (priv->irq)
+ mt7530_setup_mdio_irq(priv);
+
+ ret = devm_mdiobus_register(dev, bus);
+ if (ret) {
+ dev_err(dev, "failed to register MDIO bus: %d\n", ret);
+ if (priv->irq)
+ mt7530_free_mdio_irq(priv);
+ }
+
+ return ret;
+}
+
+static int
+mt7530_setup(struct dsa_switch *ds)
+{
+ struct mt7530_priv *priv = ds->priv;
+ struct device_node *dn = NULL;
+ struct device_node *phy_node;
+ struct device_node *mac_np;
+ struct mt7530_dummy_poll p;
+ phy_interface_t interface;
+ struct dsa_port *cpu_dp;
+ 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.
+ */
+ dsa_switch_for_each_cpu_port(cpu_dp, ds) {
+ dn = cpu_dp->master->dev.of_node->parent;
+ /* It doesn't matter which CPU port is found first,
+ * their masters should share the same parent OF node
+ */
+ break;
+ }
+
+ if (!dn) {
+ dev_err(ds->dev, "parent OF node of DSA master not found");
+ return -EINVAL;
+ }
+
+ ds->assisted_learning_on_cpu_port = true;
+ ds->mtu_enforcement_ingress = 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);
+
+ mt7530_pll_setup(priv);
+
+ /* 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));
+
+ for (i = 0; i < NUM_TRGMII_CTRL; i++)
+ mt7530_rmw(priv, MT7530_TRGMII_RD(i),
+ RD_TAP_MASK, RD_TAP(16));
+
+ /* Enable port 6 */
+ 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;
+
+ mt753x_trap_frames(priv);
+
+ /* 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);
+
+ /* Disable learning by default on all ports */
+ mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
+
+ if (dsa_is_cpu_port(ds, i)) {
+ ret = mt753x_cpu_port_enable(ds, i);
+ if (ret)
+ return ret;
+ } else {
+ mt7530_port_disable(ds, i);
+
+ /* Set default PVID to 0 on all user ports */
+ mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
+ G0_PORT_VID_DEF);
+ }
+ /* Enable consistent egress tag */
+ mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
+ PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+ }
+
+ /* Setup VLAN ID 0 for VLAN-unaware bridges */
+ ret = mt7530_setup_vlan0(priv);
+ if (ret)
+ return ret;
+
+ /* 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;
+ ret = of_get_phy_mode(dsa_to_port(ds, 5)->dn, &interface);
+ if (ret && ret != -ENODEV)
+ return ret;
+ } 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) {
+ ret = of_get_phy_mode(mac_np, &interface);
+ if (ret && ret != -ENODEV) {
+ of_node_put(mac_np);
+ of_node_put(phy_node);
+ return ret;
+ }
+ 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(mac_np);
+ of_node_put(phy_node);
+ break;
+ }
+ }
+
+#ifdef CONFIG_GPIOLIB
+ if (of_property_read_bool(priv->dev->of_node, "gpio-controller")) {
+ ret = mt7530_setup_gpio(priv);
+ if (ret)
+ return ret;
+ }
+#endif /* CONFIG_GPIOLIB */
+
+ 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 int
+mt7531_setup_common(struct dsa_switch *ds)
+{
+ struct mt7530_priv *priv = ds->priv;
+ struct dsa_port *cpu_dp;
+ int ret, i;
+
+ /* BPDU to CPU port */
+ dsa_switch_for_each_cpu_port(cpu_dp, ds) {
+ mt7530_rmw(priv, MT7531_CFC, MT7531_CPU_PMAP_MASK,
+ BIT(cpu_dp->index));
+ break;
+ }
+
+ mt753x_trap_frames(priv);
+
+ /* Enable and reset MIB counters */
+ mt7530_mib_reset(ds);
+
+ /* Disable flooding on all ports */
+ mt7530_clear(priv, MT7530_MFC, BC_FFP_MASK | UNM_FFP_MASK |
+ UNU_FFP_MASK);
+
+ 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);
+
+ /* Disable learning by default on all ports */
+ mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
+
+ mt7530_set(priv, MT7531_DBG_CNT(i), MT7531_DIS_CLR);
+
+ if (dsa_is_cpu_port(ds, i)) {
+ ret = mt753x_cpu_port_enable(ds, i);
+ if (ret)
+ return ret;
+ } else {
+ mt7530_port_disable(ds, i);
+
+ /* Set default PVID to 0 on all user ports */
+ mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
+ G0_PORT_VID_DEF);
+ }
+
+ /* Enable consistent egress tag */
+ mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
+ PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+ }
+
+ /* Flush the FDB table */
+ ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int
+mt7531_setup(struct dsa_switch *ds)
+{
+ struct mt7530_priv *priv = ds->priv;
+ struct mt7530_dummy_poll p;
+ u32 val, id;
+ int ret, i;
+
+ /* 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, MT7531_CREV);
+ id >>= CHIP_NAME_SHIFT;
+
+ if (id != MT7531_ID) {
+ dev_err(priv->dev, "chip %x can't be supported\n", id);
+ return -ENODEV;
+ }
+
+ /* all MACs must be forced link-down before sw reset */
+ for (i = 0; i < MT7530_NUM_PORTS; i++)
+ mt7530_write(priv, MT7530_PMCR_P(i), MT7531_FORCE_LNK);
+
+ /* Reset the switch through internal reset */
+ mt7530_write(priv, MT7530_SYS_CTRL,
+ SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
+ SYS_CTRL_REG_RST);
+
+ mt7531_pll_setup(priv);
+
+ if (mt7531_dual_sgmii_supported(priv)) {
+ priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII;
+
+ /* Let ds->slave_mii_bus be able to access external phy. */
+ mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK,
+ MT7531_EXT_P_MDC_11);
+ mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK,
+ MT7531_EXT_P_MDIO_12);
+ } else {
+ priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
+ }
+ dev_dbg(ds->dev, "P5 support %s interface\n",
+ p5_intf_modes(priv->p5_intf_sel));
+
+ mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK,
+ MT7531_GPIO0_INTERRUPT);
+
+ /* Let phylink decide the interface later. */
+ priv->p5_interface = PHY_INTERFACE_MODE_NA;
+ priv->p6_interface = PHY_INTERFACE_MODE_NA;
+
+ /* Enable PHY core PLL, since phy_device has not yet been created
+ * provided for phy_[read,write]_mmd_indirect is called, we provide
+ * our own mt7531_ind_mmd_phy_[read,write] to complete this
+ * function.
+ */
+ val = mt7531_ind_c45_phy_read(priv, MT753X_CTRL_PHY_ADDR,
+ MDIO_MMD_VEND2, CORE_PLL_GROUP4);
+ val |= MT7531_PHY_PLL_BYPASS_MODE;
+ val &= ~MT7531_PHY_PLL_OFF;
+ mt7531_ind_c45_phy_write(priv, MT753X_CTRL_PHY_ADDR, MDIO_MMD_VEND2,
+ CORE_PLL_GROUP4, val);
+
+ mt7531_setup_common(ds);
+
+ /* Setup VLAN ID 0 for VLAN-unaware bridges */
+ ret = mt7530_setup_vlan0(priv);
+ if (ret)
+ return ret;
+
+ ds->assisted_learning_on_cpu_port = true;
+ ds->mtu_enforcement_ingress = true;
+
+ return 0;
+}
+
+static void mt7530_mac_port_get_caps(struct dsa_switch *ds, int port,
+ struct phylink_config *config)
+{
+ switch (port) {
+ case 0 ... 4: /* Internal phy */
+ __set_bit(PHY_INTERFACE_MODE_GMII,
+ config->supported_interfaces);
+ break;
+
+ case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
+ phy_interface_set_rgmii(config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_MII,
+ config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_GMII,
+ config->supported_interfaces);
+ break;
+
+ case 6: /* 1st cpu port */
+ __set_bit(PHY_INTERFACE_MODE_RGMII,
+ config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_TRGMII,
+ config->supported_interfaces);
+ break;
+ }
+}
+
+static bool mt7531_is_rgmii_port(struct mt7530_priv *priv, u32 port)
+{
+ return (port == 5) && (priv->p5_intf_sel != P5_INTF_SEL_GMAC5_SGMII);
+}
+
+static void mt7531_mac_port_get_caps(struct dsa_switch *ds, int port,
+ struct phylink_config *config)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ switch (port) {
+ case 0 ... 4: /* Internal phy */
+ __set_bit(PHY_INTERFACE_MODE_GMII,
+ config->supported_interfaces);
+ break;
+
+ case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */
+ if (mt7531_is_rgmii_port(priv, port)) {
+ phy_interface_set_rgmii(config->supported_interfaces);
+ break;
+ }
+ fallthrough;
+
+ case 6: /* 1st cpu port supports sgmii/8023z only */
+ __set_bit(PHY_INTERFACE_MODE_SGMII,
+ config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX,
+ config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_2500BASEX,
+ config->supported_interfaces);
+
+ config->mac_capabilities |= MAC_2500FD;
+ break;
+ }
+}
+
+static int
+mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ return priv->info->pad_setup(ds, state->interface);
+}
+
+static int
+mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
+ phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ /* Only need to setup port5. */
+ if (port != 5)
+ return 0;
+
+ mt7530_setup_port5(priv->ds, interface);
+
+ return 0;
+}
+
+static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port,
+ phy_interface_t interface,
+ struct phy_device *phydev)
+{
+ u32 val;
+
+ if (!mt7531_is_rgmii_port(priv, port)) {
+ dev_err(priv->dev, "RGMII mode is not available for port %d\n",
+ port);
+ return -EINVAL;
+ }
+
+ val = mt7530_read(priv, MT7531_CLKGEN_CTRL);
+ val |= GP_CLK_EN;
+ val &= ~GP_MODE_MASK;
+ val |= GP_MODE(MT7531_GP_MODE_RGMII);
+ val &= ~CLK_SKEW_IN_MASK;
+ val |= CLK_SKEW_IN(MT7531_CLK_SKEW_NO_CHG);
+ val &= ~CLK_SKEW_OUT_MASK;
+ val |= CLK_SKEW_OUT(MT7531_CLK_SKEW_NO_CHG);
+ val |= TXCLK_NO_REVERSE | RXCLK_NO_DELAY;
+
+ /* Do not adjust rgmii delay when vendor phy driver presents. */
+ if (!phydev || phy_driver_is_genphy(phydev)) {
+ val &= ~(TXCLK_NO_REVERSE | RXCLK_NO_DELAY);
+ switch (interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val |= TXCLK_NO_REVERSE;
+ val |= RXCLK_NO_DELAY;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ val |= TXCLK_NO_REVERSE;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ val |= RXCLK_NO_DELAY;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+ mt7530_write(priv, MT7531_CLKGEN_CTRL, val);
+
+ return 0;
+}
+
+static void mt7531_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface, int speed, int duplex)
+{
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
+ unsigned int val;
+
+ /* For adjusting speed and duplex of SGMII force mode. */
+ if (interface != PHY_INTERFACE_MODE_SGMII ||
+ phylink_autoneg_inband(mode))
+ return;
+
+ /* SGMII force mode setting */
+ val = mt7530_read(priv, MT7531_SGMII_MODE(port));
+ val &= ~MT7531_SGMII_IF_MODE_MASK;
+
+ switch (speed) {
+ case SPEED_10:
+ val |= MT7531_SGMII_FORCE_SPEED_10;
+ break;
+ case SPEED_100:
+ val |= MT7531_SGMII_FORCE_SPEED_100;
+ break;
+ case SPEED_1000:
+ val |= MT7531_SGMII_FORCE_SPEED_1000;
+ break;
+ }
+
+ /* MT7531 SGMII 1G force mode can only work in full duplex mode,
+ * no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
+ *
+ * The speed check is unnecessary as the MAC capabilities apply
+ * this restriction. --rmk
+ */
+ if ((speed == SPEED_10 || speed == SPEED_100) &&
+ duplex != DUPLEX_FULL)
+ val |= MT7531_SGMII_FORCE_HALF_DUPLEX;
+
+ mt7530_write(priv, MT7531_SGMII_MODE(port), val);
+}
+
+static bool mt753x_is_mac_port(u32 port)
+{
+ return (port == 5 || port == 6);
+}
+
+static int mt7531_sgmii_setup_mode_force(struct mt7530_priv *priv, u32 port,
+ phy_interface_t interface)
+{
+ u32 val;
+
+ if (!mt753x_is_mac_port(port))
+ return -EINVAL;
+
+ mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
+ MT7531_SGMII_PHYA_PWD);
+
+ val = mt7530_read(priv, MT7531_PHYA_CTRL_SIGNAL3(port));
+ val &= ~MT7531_RG_TPHY_SPEED_MASK;
+ /* Setup 2.5 times faster clock for 2.5Gbps data speeds with 10B/8B
+ * encoding.
+ */
+ val |= (interface == PHY_INTERFACE_MODE_2500BASEX) ?
+ MT7531_RG_TPHY_SPEED_3_125G : MT7531_RG_TPHY_SPEED_1_25G;
+ mt7530_write(priv, MT7531_PHYA_CTRL_SIGNAL3(port), val);
+
+ mt7530_clear(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
+
+ /* MT7531 SGMII 1G and 2.5G force mode can only work in full duplex
+ * mode, no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
+ */
+ mt7530_rmw(priv, MT7531_SGMII_MODE(port),
+ MT7531_SGMII_IF_MODE_MASK | MT7531_SGMII_REMOTE_FAULT_DIS,
+ MT7531_SGMII_FORCE_SPEED_1000);
+
+ mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
+
+ return 0;
+}
+
+static int mt7531_sgmii_setup_mode_an(struct mt7530_priv *priv, int port,
+ phy_interface_t interface)
+{
+ if (!mt753x_is_mac_port(port))
+ return -EINVAL;
+
+ mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
+ MT7531_SGMII_PHYA_PWD);
+
+ mt7530_rmw(priv, MT7531_PHYA_CTRL_SIGNAL3(port),
+ MT7531_RG_TPHY_SPEED_MASK, MT7531_RG_TPHY_SPEED_1_25G);
+
+ mt7530_set(priv, MT7531_SGMII_MODE(port),
+ MT7531_SGMII_REMOTE_FAULT_DIS |
+ MT7531_SGMII_SPEED_DUPLEX_AN);
+
+ mt7530_rmw(priv, MT7531_PCS_SPEED_ABILITY(port),
+ MT7531_SGMII_TX_CONFIG_MASK, 1);
+
+ mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
+
+ mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_RESTART);
+
+ mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
+
+ return 0;
+}
+
+static void mt7531_pcs_an_restart(struct phylink_pcs *pcs)
+{
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
+ u32 val;
+
+ /* Only restart AN when AN is enabled */
+ val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
+ if (val & MT7531_SGMII_AN_ENABLE) {
+ val |= MT7531_SGMII_AN_RESTART;
+ mt7530_write(priv, MT7531_PCS_CONTROL_1(port), val);
+ }
+}
+
+static int
+mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
+ phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+ struct phy_device *phydev;
+ struct dsa_port *dp;
+
+ if (!mt753x_is_mac_port(port)) {
+ dev_err(priv->dev, "port %d is not a MAC port\n", port);
+ return -EINVAL;
+ }
+
+ switch (interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ dp = dsa_to_port(ds, port);
+ phydev = dp->slave->phydev;
+ return mt7531_rgmii_setup(priv, port, interface, phydev);
+ case PHY_INTERFACE_MODE_SGMII:
+ return mt7531_sgmii_setup_mode_an(priv, port, interface);
+ case PHY_INTERFACE_MODE_NA:
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ return mt7531_sgmii_setup_mode_force(priv, port, interface);
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int
+mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
+ const struct phylink_link_state *state)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ return priv->info->mac_port_config(ds, port, mode, state->interface);
+}
+
+static struct phylink_pcs *
+mt753x_phylink_mac_select_pcs(struct dsa_switch *ds, int port,
+ phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ switch (interface) {
+ case PHY_INTERFACE_MODE_TRGMII:
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ return &priv->pcs[port].pcs;
+
+ default:
+ return NULL;
+ }
+}
+
+static void
+mt753x_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 ... 4: /* Internal phy */
+ if (state->interface != PHY_INTERFACE_MODE_GMII)
+ goto unsupported;
+ break;
+ case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
+ if (priv->p5_interface == state->interface)
+ break;
+
+ if (mt753x_mac_config(ds, port, mode, state) < 0)
+ goto unsupported;
+
+ if (priv->p5_intf_sel != P5_DISABLED)
+ priv->p5_interface = state->interface;
+ break;
+ case 6: /* 1st cpu port */
+ if (priv->p6_interface == state->interface)
+ break;
+
+ mt753x_pad_setup(ds, state);
+
+ if (mt753x_mac_config(ds, port, mode, state) < 0)
+ goto unsupported;
+
+ priv->p6_interface = state->interface;
+ break;
+ default:
+unsupported:
+ dev_err(ds->dev, "%s: unsupported %s port: %i\n",
+ __func__, phy_modes(state->interface), port);
+ return;
+ }
+
+ mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port));
+ mcr_new = mcr_cur;
+ mcr_new &= ~PMCR_LINK_SETTINGS_MASK;
+ mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN |
+ PMCR_BACKPR_EN | PMCR_FORCE_MODE_ID(priv->id);
+
+ /* Are we connected to external phy */
+ if (port == 5 && dsa_is_user_port(ds, 5))
+ mcr_new |= PMCR_EXT_PHY;
+
+ if (mcr_new != mcr_cur)
+ mt7530_write(priv, MT7530_PMCR_P(port), mcr_new);
+}
+
+static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
+ unsigned int mode,
+ phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
+}
+
+static void mt753x_phylink_pcs_link_up(struct phylink_pcs *pcs,
+ unsigned int mode,
+ phy_interface_t interface,
+ int speed, int duplex)
+{
+ if (pcs->ops->pcs_link_up)
+ pcs->ops->pcs_link_up(pcs, mode, interface, speed, duplex);
+}
+
+static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port,
+ unsigned int mode,
+ phy_interface_t interface,
+ struct phy_device *phydev,
+ int speed, int duplex,
+ bool tx_pause, bool rx_pause)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 mcr;
+
+ mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK;
+
+ /* MT753x MAC works in 1G full duplex mode for all up-clocked
+ * variants.
+ */
+ if (interface == PHY_INTERFACE_MODE_TRGMII ||
+ (phy_interface_mode_is_8023z(interface))) {
+ speed = SPEED_1000;
+ duplex = DUPLEX_FULL;
+ }
+
+ switch (speed) {
+ case SPEED_1000:
+ mcr |= PMCR_FORCE_SPEED_1000;
+ break;
+ case SPEED_100:
+ mcr |= PMCR_FORCE_SPEED_100;
+ break;
+ }
+ if (duplex == DUPLEX_FULL) {
+ mcr |= PMCR_FORCE_FDX;
+ if (tx_pause)
+ mcr |= PMCR_TX_FC_EN;
+ if (rx_pause)
+ mcr |= PMCR_RX_FC_EN;
+ }
+
+ if (mode == MLO_AN_PHY && phydev && phy_init_eee(phydev, false) >= 0) {
+ switch (speed) {
+ case SPEED_1000:
+ mcr |= PMCR_FORCE_EEE1G;
+ break;
+ case SPEED_100:
+ mcr |= PMCR_FORCE_EEE100;
+ break;
+ }
+ }
+
+ mt7530_set(priv, MT7530_PMCR_P(port), mcr);
+}
+
+static int
+mt7531_cpu_port_config(struct dsa_switch *ds, int port)
+{
+ struct mt7530_priv *priv = ds->priv;
+ phy_interface_t interface;
+ int speed;
+ int ret;
+
+ switch (port) {
+ case 5:
+ if (mt7531_is_rgmii_port(priv, port))
+ interface = PHY_INTERFACE_MODE_RGMII;
+ else
+ interface = PHY_INTERFACE_MODE_2500BASEX;
+
+ priv->p5_interface = interface;
+ break;
+ case 6:
+ interface = PHY_INTERFACE_MODE_2500BASEX;
+
+ priv->p6_interface = interface;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (interface == PHY_INTERFACE_MODE_2500BASEX)
+ speed = SPEED_2500;
+ else
+ speed = SPEED_1000;
+
+ ret = mt7531_mac_config(ds, port, MLO_AN_FIXED, interface);
+ if (ret)
+ return ret;
+ mt7530_write(priv, MT7530_PMCR_P(port),
+ PMCR_CPU_PORT_SETTING(priv->id));
+ mt753x_phylink_pcs_link_up(&priv->pcs[port].pcs, MLO_AN_FIXED,
+ interface, speed, DUPLEX_FULL);
+ mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL,
+ speed, DUPLEX_FULL, true, true);
+
+ return 0;
+}
+
+static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port,
+ struct phylink_config *config)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ /* This switch only supports full-duplex at 1Gbps */
+ config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
+ MAC_10 | MAC_100 | MAC_1000FD;
+
+ if ((priv->id == ID_MT7531) && mt753x_is_mac_port(port))
+ config->mac_capabilities |= MAC_2500FD;
+
+ /* This driver does not make use of the speed, duplex, pause or the
+ * advertisement in its mac_config, so it is safe to mark this driver
+ * as non-legacy.
+ */
+ config->legacy_pre_march2020 = false;
+
+ priv->info->mac_port_get_caps(ds, port, config);
+}
+
+static int mt753x_pcs_validate(struct phylink_pcs *pcs,
+ unsigned long *supported,
+ const struct phylink_link_state *state)
+{
+ /* Autonegotiation is not supported in TRGMII nor 802.3z modes */
+ if (state->interface == PHY_INTERFACE_MODE_TRGMII ||
+ phy_interface_mode_is_8023z(state->interface))
+ phylink_clear(supported, Autoneg);
+
+ return 0;
+}
+
+static void mt7530_pcs_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state)
+{
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
+ u32 pmsr;
+
+ 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;
+}
+
+static int
+mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port,
+ struct phylink_link_state *state)
+{
+ u32 status, val;
+ u16 config_reg;
+
+ status = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
+ state->link = !!(status & MT7531_SGMII_LINK_STATUS);
+ state->an_complete = !!(status & MT7531_SGMII_AN_COMPLETE);
+ if (state->interface == PHY_INTERFACE_MODE_SGMII &&
+ (status & MT7531_SGMII_AN_ENABLE)) {
+ val = mt7530_read(priv, MT7531_PCS_SPEED_ABILITY(port));
+ config_reg = val >> 16;
+
+ switch (config_reg & LPA_SGMII_SPD_MASK) {
+ case LPA_SGMII_1000:
+ state->speed = SPEED_1000;
+ break;
+ case LPA_SGMII_100:
+ state->speed = SPEED_100;
+ break;
+ case LPA_SGMII_10:
+ state->speed = SPEED_10;
+ break;
+ default:
+ dev_err(priv->dev, "invalid sgmii PHY speed\n");
+ state->link = false;
+ return -EINVAL;
+ }
+
+ if (config_reg & LPA_SGMII_FULL_DUPLEX)
+ state->duplex = DUPLEX_FULL;
+ else
+ state->duplex = DUPLEX_HALF;
+ }
+
+ return 0;
+}
+
+static void
+mt7531_sgmii_pcs_get_state_inband(struct mt7530_priv *priv, int port,
+ struct phylink_link_state *state)
+{
+ unsigned int val;
+
+ val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
+ state->link = !!(val & MT7531_SGMII_LINK_STATUS);
+ if (!state->link)
+ return;
+
+ state->an_complete = state->link;
+
+ if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
+ state->speed = SPEED_2500;
+ else
+ state->speed = SPEED_1000;
+
+ state->duplex = DUPLEX_FULL;
+ state->pause = MLO_PAUSE_NONE;
+}
+
+static void mt7531_pcs_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state)
+{
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
+
+ if (state->interface == PHY_INTERFACE_MODE_SGMII) {
+ mt7531_sgmii_pcs_get_state_an(priv, port, state);
+ return;
+ } else if ((state->interface == PHY_INTERFACE_MODE_1000BASEX) ||
+ (state->interface == PHY_INTERFACE_MODE_2500BASEX)) {
+ mt7531_sgmii_pcs_get_state_inband(priv, port, state);
+ return;
+ }
+
+ state->link = false;
+}
+
+static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface,
+ const unsigned long *advertising,
+ bool permit_pause_to_mac)
+{
+ return 0;
+}
+
+static void mt7530_pcs_an_restart(struct phylink_pcs *pcs)
+{
+}
+
+static const struct phylink_pcs_ops mt7530_pcs_ops = {
+ .pcs_validate = mt753x_pcs_validate,
+ .pcs_get_state = mt7530_pcs_get_state,
+ .pcs_config = mt753x_pcs_config,
+ .pcs_an_restart = mt7530_pcs_an_restart,
+};
+
+static const struct phylink_pcs_ops mt7531_pcs_ops = {
+ .pcs_validate = mt753x_pcs_validate,
+ .pcs_get_state = mt7531_pcs_get_state,
+ .pcs_config = mt753x_pcs_config,
+ .pcs_an_restart = mt7531_pcs_an_restart,
+ .pcs_link_up = mt7531_pcs_link_up,
+};
+
+static int
+mt753x_setup(struct dsa_switch *ds)
+{
+ struct mt7530_priv *priv = ds->priv;
+ int i, ret;
+
+ /* Initialise the PCS devices */
+ for (i = 0; i < priv->ds->num_ports; i++) {
+ priv->pcs[i].pcs.ops = priv->info->pcs_ops;
+ priv->pcs[i].priv = priv;
+ priv->pcs[i].port = i;
+ if (mt753x_is_mac_port(i))
+ priv->pcs[i].pcs.poll = 1;
+ }
+
+ ret = priv->info->sw_setup(ds);
+ if (ret)
+ return ret;
+
+ ret = mt7530_setup_irq(priv);
+ if (ret)
+ return ret;
+
+ ret = mt7530_setup_mdio(priv);
+ if (ret && priv->irq)
+ mt7530_free_irq_common(priv);
+
+ return ret;
+}
+
+static int mt753x_get_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
+
+ e->tx_lpi_enabled = !(eeecr & LPI_MODE_EN);
+ e->tx_lpi_timer = GET_LPI_THRESH(eeecr);
+
+ return 0;
+}
+
+static int mt753x_set_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 set, mask = LPI_THRESH_MASK | LPI_MODE_EN;
+
+ if (e->tx_lpi_timer > 0xFFF)
+ return -EINVAL;
+
+ set = SET_LPI_THRESH(e->tx_lpi_timer);
+ if (!e->tx_lpi_enabled)
+ /* Force LPI Mode without a delay */
+ set |= LPI_MODE_EN;
+ mt7530_rmw(priv, MT7530_PMEEECR_P(port), mask, set);
+
+ return 0;
+}
+
+static const struct dsa_switch_ops mt7530_switch_ops = {
+ .get_tag_protocol = mtk_get_tag_protocol,
+ .setup = mt753x_setup,
+ .get_strings = mt7530_get_strings,
+ .get_ethtool_stats = mt7530_get_ethtool_stats,
+ .get_sset_count = mt7530_get_sset_count,
+ .set_ageing_time = mt7530_set_ageing_time,
+ .port_enable = mt7530_port_enable,
+ .port_disable = mt7530_port_disable,
+ .port_change_mtu = mt7530_port_change_mtu,
+ .port_max_mtu = mt7530_port_max_mtu,
+ .port_stp_state_set = mt7530_stp_state_set,
+ .port_pre_bridge_flags = mt7530_port_pre_bridge_flags,
+ .port_bridge_flags = mt7530_port_bridge_flags,
+ .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_mdb_add = mt7530_port_mdb_add,
+ .port_mdb_del = mt7530_port_mdb_del,
+ .port_vlan_filtering = mt7530_port_vlan_filtering,
+ .port_vlan_add = mt7530_port_vlan_add,
+ .port_vlan_del = mt7530_port_vlan_del,
+ .port_mirror_add = mt753x_port_mirror_add,
+ .port_mirror_del = mt753x_port_mirror_del,
+ .phylink_get_caps = mt753x_phylink_get_caps,
+ .phylink_mac_select_pcs = mt753x_phylink_mac_select_pcs,
+ .phylink_mac_config = mt753x_phylink_mac_config,
+ .phylink_mac_link_down = mt753x_phylink_mac_link_down,
+ .phylink_mac_link_up = mt753x_phylink_mac_link_up,
+ .get_mac_eee = mt753x_get_mac_eee,
+ .set_mac_eee = mt753x_set_mac_eee,
+};
+
+static const struct mt753x_info mt753x_table[] = {
+ [ID_MT7621] = {
+ .id = ID_MT7621,
+ .pcs_ops = &mt7530_pcs_ops,
+ .sw_setup = mt7530_setup,
+ .phy_read = mt7530_phy_read,
+ .phy_write = mt7530_phy_write,
+ .pad_setup = mt7530_pad_clk_setup,
+ .mac_port_get_caps = mt7530_mac_port_get_caps,
+ .mac_port_config = mt7530_mac_config,
+ },
+ [ID_MT7530] = {
+ .id = ID_MT7530,
+ .pcs_ops = &mt7530_pcs_ops,
+ .sw_setup = mt7530_setup,
+ .phy_read = mt7530_phy_read,
+ .phy_write = mt7530_phy_write,
+ .pad_setup = mt7530_pad_clk_setup,
+ .mac_port_get_caps = mt7530_mac_port_get_caps,
+ .mac_port_config = mt7530_mac_config,
+ },
+ [ID_MT7531] = {
+ .id = ID_MT7531,
+ .pcs_ops = &mt7531_pcs_ops,
+ .sw_setup = mt7531_setup,
+ .phy_read = mt7531_ind_phy_read,
+ .phy_write = mt7531_ind_phy_write,
+ .pad_setup = mt7531_pad_setup,
+ .cpu_port_config = mt7531_cpu_port_config,
+ .mac_port_get_caps = mt7531_mac_port_get_caps,
+ .mac_port_config = mt7531_mac_config,
+ },
+};
+
+static const struct of_device_id mt7530_of_match[] = {
+ { .compatible = "mediatek,mt7621", .data = &mt753x_table[ID_MT7621], },
+ { .compatible = "mediatek,mt7530", .data = &mt753x_table[ID_MT7530], },
+ { .compatible = "mediatek,mt7531", .data = &mt753x_table[ID_MT7531], },
+ { /* 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 = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL);
+ if (!priv->ds)
+ return -ENOMEM;
+
+ priv->ds->dev = &mdiodev->dev;
+ priv->ds->num_ports = MT7530_NUM_PORTS;
+
+ /* 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->info = of_device_get_match_data(&mdiodev->dev);
+ if (!priv->info)
+ return -EINVAL;
+
+ /* Sanity check if these required device operations are filled
+ * properly.
+ */
+ if (!priv->info->sw_setup || !priv->info->pad_setup ||
+ !priv->info->phy_read || !priv->info->phy_write ||
+ !priv->info->mac_port_get_caps ||
+ !priv->info->mac_port_config)
+ return -EINVAL;
+
+ priv->id = priv->info->id;
+
+ 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;
+
+ if (!priv)
+ return;
+
+ 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);
+
+ if (priv->irq)
+ mt7530_free_irq(priv);
+
+ dsa_unregister_switch(priv->ds);
+ mutex_destroy(&priv->reg_mutex);
+}
+
+static void mt7530_shutdown(struct mdio_device *mdiodev)
+{
+ struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
+
+ if (!priv)
+ return;
+
+ dsa_switch_shutdown(priv->ds);
+
+ dev_set_drvdata(&mdiodev->dev, NULL);
+}
+
+static struct mdio_driver mt7530_mdio_driver = {
+ .probe = mt7530_probe,
+ .remove = mt7530_remove,
+ .shutdown = mt7530_shutdown,
+ .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");