918 lines
23 KiB
C
918 lines
23 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Driver for the Texas Instruments DP83869 PHY
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* Copyright (C) 2019 Texas Instruments Inc.
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*/
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#include <linux/ethtool.h>
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#include <linux/etherdevice.h>
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#include <linux/kernel.h>
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#include <linux/mii.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/phy.h>
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#include <linux/delay.h>
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#include <linux/bitfield.h>
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#include <dt-bindings/net/ti-dp83869.h>
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#define DP83869_PHY_ID 0x2000a0f1
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#define DP83561_PHY_ID 0x2000a1a4
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#define DP83869_DEVADDR 0x1f
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#define MII_DP83869_PHYCTRL 0x10
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#define MII_DP83869_MICR 0x12
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#define MII_DP83869_ISR 0x13
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#define DP83869_CFG2 0x14
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#define DP83869_CTRL 0x1f
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#define DP83869_CFG4 0x1e
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/* Extended Registers */
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#define DP83869_GEN_CFG3 0x0031
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#define DP83869_RGMIICTL 0x0032
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#define DP83869_STRAP_STS1 0x006e
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#define DP83869_RGMIIDCTL 0x0086
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#define DP83869_RXFCFG 0x0134
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#define DP83869_RXFPMD1 0x0136
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#define DP83869_RXFPMD2 0x0137
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#define DP83869_RXFPMD3 0x0138
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#define DP83869_RXFSOP1 0x0139
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#define DP83869_RXFSOP2 0x013A
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#define DP83869_RXFSOP3 0x013B
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#define DP83869_IO_MUX_CFG 0x0170
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#define DP83869_OP_MODE 0x01df
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#define DP83869_FX_CTRL 0x0c00
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#define DP83869_SW_RESET BIT(15)
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#define DP83869_SW_RESTART BIT(14)
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/* MICR Interrupt bits */
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#define MII_DP83869_MICR_AN_ERR_INT_EN BIT(15)
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#define MII_DP83869_MICR_SPEED_CHNG_INT_EN BIT(14)
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#define MII_DP83869_MICR_DUP_MODE_CHNG_INT_EN BIT(13)
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#define MII_DP83869_MICR_PAGE_RXD_INT_EN BIT(12)
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#define MII_DP83869_MICR_AUTONEG_COMP_INT_EN BIT(11)
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#define MII_DP83869_MICR_LINK_STS_CHNG_INT_EN BIT(10)
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#define MII_DP83869_MICR_FALSE_CARRIER_INT_EN BIT(8)
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#define MII_DP83869_MICR_SLEEP_MODE_CHNG_INT_EN BIT(4)
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#define MII_DP83869_MICR_WOL_INT_EN BIT(3)
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#define MII_DP83869_MICR_XGMII_ERR_INT_EN BIT(2)
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#define MII_DP83869_MICR_POL_CHNG_INT_EN BIT(1)
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#define MII_DP83869_MICR_JABBER_INT_EN BIT(0)
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#define MII_DP83869_BMCR_DEFAULT (BMCR_ANENABLE | \
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BMCR_FULLDPLX | \
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BMCR_SPEED1000)
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#define MII_DP83869_FIBER_ADVERTISE (ADVERTISED_FIBRE | \
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ADVERTISED_Pause | \
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ADVERTISED_Asym_Pause)
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/* This is the same bit mask as the BMCR so re-use the BMCR default */
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#define DP83869_FX_CTRL_DEFAULT MII_DP83869_BMCR_DEFAULT
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/* CFG1 bits */
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#define DP83869_CFG1_DEFAULT (ADVERTISE_1000HALF | \
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ADVERTISE_1000FULL | \
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CTL1000_AS_MASTER)
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/* RGMIICTL bits */
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#define DP83869_RGMII_TX_CLK_DELAY_EN BIT(1)
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#define DP83869_RGMII_RX_CLK_DELAY_EN BIT(0)
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/* RGMIIDCTL */
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#define DP83869_RGMII_CLK_DELAY_SHIFT 4
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#define DP83869_CLK_DELAY_DEF 7
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/* STRAP_STS1 bits */
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#define DP83869_STRAP_OP_MODE_MASK GENMASK(2, 0)
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#define DP83869_STRAP_STS1_RESERVED BIT(11)
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#define DP83869_STRAP_MIRROR_ENABLED BIT(12)
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/* PHYCTRL bits */
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#define DP83869_RX_FIFO_SHIFT 12
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#define DP83869_TX_FIFO_SHIFT 14
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/* PHY_CTRL lower bytes 0x48 are declared as reserved */
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#define DP83869_PHY_CTRL_DEFAULT 0x48
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#define DP83869_PHYCR_FIFO_DEPTH_MASK GENMASK(15, 12)
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#define DP83869_PHYCR_RESERVED_MASK BIT(11)
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/* IO_MUX_CFG bits */
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#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL 0x1f
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#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX 0x0
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#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN 0x1f
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#define DP83869_IO_MUX_CFG_CLK_O_SEL_MASK (0x1f << 8)
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#define DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT 8
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/* CFG3 bits */
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#define DP83869_CFG3_PORT_MIRROR_EN BIT(0)
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/* CFG4 bits */
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#define DP83869_INT_OE BIT(7)
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/* OP MODE */
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#define DP83869_OP_MODE_MII BIT(5)
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#define DP83869_SGMII_RGMII_BRIDGE BIT(6)
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/* RXFCFG bits*/
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#define DP83869_WOL_MAGIC_EN BIT(0)
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#define DP83869_WOL_PATTERN_EN BIT(1)
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#define DP83869_WOL_BCAST_EN BIT(2)
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#define DP83869_WOL_UCAST_EN BIT(4)
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#define DP83869_WOL_SEC_EN BIT(5)
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#define DP83869_WOL_ENH_MAC BIT(7)
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/* CFG2 bits */
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#define DP83869_DOWNSHIFT_EN (BIT(8) | BIT(9))
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#define DP83869_DOWNSHIFT_ATTEMPT_MASK (BIT(10) | BIT(11))
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#define DP83869_DOWNSHIFT_1_COUNT_VAL 0
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#define DP83869_DOWNSHIFT_2_COUNT_VAL 1
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#define DP83869_DOWNSHIFT_4_COUNT_VAL 2
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#define DP83869_DOWNSHIFT_8_COUNT_VAL 3
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#define DP83869_DOWNSHIFT_1_COUNT 1
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#define DP83869_DOWNSHIFT_2_COUNT 2
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#define DP83869_DOWNSHIFT_4_COUNT 4
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#define DP83869_DOWNSHIFT_8_COUNT 8
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enum {
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DP83869_PORT_MIRRORING_KEEP,
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DP83869_PORT_MIRRORING_EN,
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DP83869_PORT_MIRRORING_DIS,
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};
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struct dp83869_private {
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int tx_fifo_depth;
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int rx_fifo_depth;
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s32 rx_int_delay;
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s32 tx_int_delay;
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int io_impedance;
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int port_mirroring;
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bool rxctrl_strap_quirk;
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int clk_output_sel;
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int mode;
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};
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static int dp83869_read_status(struct phy_device *phydev)
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{
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struct dp83869_private *dp83869 = phydev->priv;
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int ret;
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ret = genphy_read_status(phydev);
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if (ret)
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return ret;
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if (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported)) {
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if (phydev->link) {
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if (dp83869->mode == DP83869_RGMII_100_BASE)
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phydev->speed = SPEED_100;
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} else {
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phydev->speed = SPEED_UNKNOWN;
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phydev->duplex = DUPLEX_UNKNOWN;
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}
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}
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return 0;
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}
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static int dp83869_ack_interrupt(struct phy_device *phydev)
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{
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int err = phy_read(phydev, MII_DP83869_ISR);
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if (err < 0)
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return err;
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return 0;
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}
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static int dp83869_config_intr(struct phy_device *phydev)
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{
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int micr_status = 0, err;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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err = dp83869_ack_interrupt(phydev);
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if (err)
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return err;
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micr_status = phy_read(phydev, MII_DP83869_MICR);
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if (micr_status < 0)
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return micr_status;
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micr_status |=
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(MII_DP83869_MICR_AN_ERR_INT_EN |
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MII_DP83869_MICR_SPEED_CHNG_INT_EN |
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MII_DP83869_MICR_AUTONEG_COMP_INT_EN |
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MII_DP83869_MICR_LINK_STS_CHNG_INT_EN |
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MII_DP83869_MICR_DUP_MODE_CHNG_INT_EN |
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MII_DP83869_MICR_SLEEP_MODE_CHNG_INT_EN);
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err = phy_write(phydev, MII_DP83869_MICR, micr_status);
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} else {
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err = phy_write(phydev, MII_DP83869_MICR, micr_status);
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if (err)
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return err;
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err = dp83869_ack_interrupt(phydev);
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}
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return err;
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}
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static irqreturn_t dp83869_handle_interrupt(struct phy_device *phydev)
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{
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int irq_status, irq_enabled;
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irq_status = phy_read(phydev, MII_DP83869_ISR);
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if (irq_status < 0) {
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phy_error(phydev);
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return IRQ_NONE;
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}
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irq_enabled = phy_read(phydev, MII_DP83869_MICR);
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if (irq_enabled < 0) {
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phy_error(phydev);
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return IRQ_NONE;
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}
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if (!(irq_status & irq_enabled))
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return IRQ_NONE;
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phy_trigger_machine(phydev);
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return IRQ_HANDLED;
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}
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static int dp83869_set_wol(struct phy_device *phydev,
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struct ethtool_wolinfo *wol)
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{
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struct net_device *ndev = phydev->attached_dev;
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int val_rxcfg, val_micr;
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const u8 *mac;
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int ret;
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val_rxcfg = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RXFCFG);
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if (val_rxcfg < 0)
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return val_rxcfg;
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val_micr = phy_read(phydev, MII_DP83869_MICR);
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if (val_micr < 0)
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return val_micr;
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if (wol->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_UCAST |
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WAKE_BCAST)) {
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val_rxcfg |= DP83869_WOL_ENH_MAC;
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val_micr |= MII_DP83869_MICR_WOL_INT_EN;
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if (wol->wolopts & WAKE_MAGIC ||
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wol->wolopts & WAKE_MAGICSECURE) {
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mac = (const u8 *)ndev->dev_addr;
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if (!is_valid_ether_addr(mac))
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return -EINVAL;
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ret = phy_write_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFPMD1,
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mac[1] << 8 | mac[0]);
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if (ret)
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return ret;
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ret = phy_write_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFPMD2,
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mac[3] << 8 | mac[2]);
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if (ret)
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return ret;
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ret = phy_write_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFPMD3,
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mac[5] << 8 | mac[4]);
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if (ret)
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return ret;
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val_rxcfg |= DP83869_WOL_MAGIC_EN;
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} else {
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val_rxcfg &= ~DP83869_WOL_MAGIC_EN;
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}
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if (wol->wolopts & WAKE_MAGICSECURE) {
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ret = phy_write_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFSOP1,
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(wol->sopass[1] << 8) | wol->sopass[0]);
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if (ret)
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return ret;
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ret = phy_write_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFSOP2,
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(wol->sopass[3] << 8) | wol->sopass[2]);
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if (ret)
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return ret;
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ret = phy_write_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFSOP3,
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(wol->sopass[5] << 8) | wol->sopass[4]);
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if (ret)
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return ret;
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val_rxcfg |= DP83869_WOL_SEC_EN;
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} else {
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val_rxcfg &= ~DP83869_WOL_SEC_EN;
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}
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if (wol->wolopts & WAKE_UCAST)
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val_rxcfg |= DP83869_WOL_UCAST_EN;
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else
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val_rxcfg &= ~DP83869_WOL_UCAST_EN;
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if (wol->wolopts & WAKE_BCAST)
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val_rxcfg |= DP83869_WOL_BCAST_EN;
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else
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val_rxcfg &= ~DP83869_WOL_BCAST_EN;
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} else {
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val_rxcfg &= ~DP83869_WOL_ENH_MAC;
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val_micr &= ~MII_DP83869_MICR_WOL_INT_EN;
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}
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ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFCFG, val_rxcfg);
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if (ret)
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return ret;
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return phy_write(phydev, MII_DP83869_MICR, val_micr);
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}
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static void dp83869_get_wol(struct phy_device *phydev,
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struct ethtool_wolinfo *wol)
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{
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int value, sopass_val;
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wol->supported = (WAKE_UCAST | WAKE_BCAST | WAKE_MAGIC |
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WAKE_MAGICSECURE);
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wol->wolopts = 0;
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value = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RXFCFG);
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if (value < 0) {
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phydev_err(phydev, "Failed to read RX CFG\n");
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return;
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}
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if (value & DP83869_WOL_UCAST_EN)
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wol->wolopts |= WAKE_UCAST;
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if (value & DP83869_WOL_BCAST_EN)
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wol->wolopts |= WAKE_BCAST;
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if (value & DP83869_WOL_MAGIC_EN)
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wol->wolopts |= WAKE_MAGIC;
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if (value & DP83869_WOL_SEC_EN) {
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sopass_val = phy_read_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFSOP1);
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if (sopass_val < 0) {
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phydev_err(phydev, "Failed to read RX SOP 1\n");
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return;
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}
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wol->sopass[0] = (sopass_val & 0xff);
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wol->sopass[1] = (sopass_val >> 8);
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sopass_val = phy_read_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFSOP2);
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if (sopass_val < 0) {
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phydev_err(phydev, "Failed to read RX SOP 2\n");
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return;
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}
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wol->sopass[2] = (sopass_val & 0xff);
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wol->sopass[3] = (sopass_val >> 8);
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sopass_val = phy_read_mmd(phydev, DP83869_DEVADDR,
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DP83869_RXFSOP3);
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if (sopass_val < 0) {
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phydev_err(phydev, "Failed to read RX SOP 3\n");
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return;
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}
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wol->sopass[4] = (sopass_val & 0xff);
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wol->sopass[5] = (sopass_val >> 8);
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wol->wolopts |= WAKE_MAGICSECURE;
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}
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if (!(value & DP83869_WOL_ENH_MAC))
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wol->wolopts = 0;
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}
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static int dp83869_get_downshift(struct phy_device *phydev, u8 *data)
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{
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int val, cnt, enable, count;
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val = phy_read(phydev, DP83869_CFG2);
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if (val < 0)
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return val;
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enable = FIELD_GET(DP83869_DOWNSHIFT_EN, val);
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cnt = FIELD_GET(DP83869_DOWNSHIFT_ATTEMPT_MASK, val);
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switch (cnt) {
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case DP83869_DOWNSHIFT_1_COUNT_VAL:
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count = DP83869_DOWNSHIFT_1_COUNT;
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break;
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case DP83869_DOWNSHIFT_2_COUNT_VAL:
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count = DP83869_DOWNSHIFT_2_COUNT;
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break;
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case DP83869_DOWNSHIFT_4_COUNT_VAL:
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count = DP83869_DOWNSHIFT_4_COUNT;
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break;
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case DP83869_DOWNSHIFT_8_COUNT_VAL:
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count = DP83869_DOWNSHIFT_8_COUNT;
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break;
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default:
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return -EINVAL;
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}
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*data = enable ? count : DOWNSHIFT_DEV_DISABLE;
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return 0;
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}
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static int dp83869_set_downshift(struct phy_device *phydev, u8 cnt)
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{
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int val, count;
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if (cnt > DP83869_DOWNSHIFT_8_COUNT)
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return -EINVAL;
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if (!cnt)
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return phy_clear_bits(phydev, DP83869_CFG2,
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DP83869_DOWNSHIFT_EN);
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switch (cnt) {
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case DP83869_DOWNSHIFT_1_COUNT:
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count = DP83869_DOWNSHIFT_1_COUNT_VAL;
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break;
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case DP83869_DOWNSHIFT_2_COUNT:
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count = DP83869_DOWNSHIFT_2_COUNT_VAL;
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break;
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case DP83869_DOWNSHIFT_4_COUNT:
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count = DP83869_DOWNSHIFT_4_COUNT_VAL;
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break;
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case DP83869_DOWNSHIFT_8_COUNT:
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count = DP83869_DOWNSHIFT_8_COUNT_VAL;
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break;
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default:
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phydev_err(phydev,
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"Downshift count must be 1, 2, 4 or 8\n");
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return -EINVAL;
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}
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val = DP83869_DOWNSHIFT_EN;
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val |= FIELD_PREP(DP83869_DOWNSHIFT_ATTEMPT_MASK, count);
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|
|
return phy_modify(phydev, DP83869_CFG2,
|
|
DP83869_DOWNSHIFT_EN | DP83869_DOWNSHIFT_ATTEMPT_MASK,
|
|
val);
|
|
}
|
|
|
|
static int dp83869_get_tunable(struct phy_device *phydev,
|
|
struct ethtool_tunable *tuna, void *data)
|
|
{
|
|
switch (tuna->id) {
|
|
case ETHTOOL_PHY_DOWNSHIFT:
|
|
return dp83869_get_downshift(phydev, data);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static int dp83869_set_tunable(struct phy_device *phydev,
|
|
struct ethtool_tunable *tuna, const void *data)
|
|
{
|
|
switch (tuna->id) {
|
|
case ETHTOOL_PHY_DOWNSHIFT:
|
|
return dp83869_set_downshift(phydev, *(const u8 *)data);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static int dp83869_config_port_mirroring(struct phy_device *phydev)
|
|
{
|
|
struct dp83869_private *dp83869 = phydev->priv;
|
|
|
|
if (dp83869->port_mirroring == DP83869_PORT_MIRRORING_EN)
|
|
return phy_set_bits_mmd(phydev, DP83869_DEVADDR,
|
|
DP83869_GEN_CFG3,
|
|
DP83869_CFG3_PORT_MIRROR_EN);
|
|
else
|
|
return phy_clear_bits_mmd(phydev, DP83869_DEVADDR,
|
|
DP83869_GEN_CFG3,
|
|
DP83869_CFG3_PORT_MIRROR_EN);
|
|
}
|
|
|
|
static int dp83869_set_strapped_mode(struct phy_device *phydev)
|
|
{
|
|
struct dp83869_private *dp83869 = phydev->priv;
|
|
int val;
|
|
|
|
val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_STRAP_STS1);
|
|
if (val < 0)
|
|
return val;
|
|
|
|
dp83869->mode = val & DP83869_STRAP_OP_MODE_MASK;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_OF_MDIO)
|
|
static const int dp83869_internal_delay[] = {250, 500, 750, 1000, 1250, 1500,
|
|
1750, 2000, 2250, 2500, 2750, 3000,
|
|
3250, 3500, 3750, 4000};
|
|
|
|
static int dp83869_of_init(struct phy_device *phydev)
|
|
{
|
|
struct dp83869_private *dp83869 = phydev->priv;
|
|
struct device *dev = &phydev->mdio.dev;
|
|
struct device_node *of_node = dev->of_node;
|
|
int delay_size = ARRAY_SIZE(dp83869_internal_delay);
|
|
int ret;
|
|
|
|
if (!of_node)
|
|
return -ENODEV;
|
|
|
|
dp83869->io_impedance = -EINVAL;
|
|
|
|
/* Optional configuration */
|
|
ret = of_property_read_u32(of_node, "ti,clk-output-sel",
|
|
&dp83869->clk_output_sel);
|
|
if (ret || dp83869->clk_output_sel > DP83869_CLK_O_SEL_REF_CLK)
|
|
dp83869->clk_output_sel = DP83869_CLK_O_SEL_REF_CLK;
|
|
|
|
ret = of_property_read_u32(of_node, "ti,op-mode", &dp83869->mode);
|
|
if (ret == 0) {
|
|
if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET ||
|
|
dp83869->mode > DP83869_SGMII_COPPER_ETHERNET)
|
|
return -EINVAL;
|
|
} else {
|
|
ret = dp83869_set_strapped_mode(phydev);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (of_property_read_bool(of_node, "ti,max-output-impedance"))
|
|
dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX;
|
|
else if (of_property_read_bool(of_node, "ti,min-output-impedance"))
|
|
dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN;
|
|
|
|
if (of_property_read_bool(of_node, "enet-phy-lane-swap")) {
|
|
dp83869->port_mirroring = DP83869_PORT_MIRRORING_EN;
|
|
} else {
|
|
/* If the lane swap is not in the DT then check the straps */
|
|
ret = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_STRAP_STS1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (ret & DP83869_STRAP_MIRROR_ENABLED)
|
|
dp83869->port_mirroring = DP83869_PORT_MIRRORING_EN;
|
|
else
|
|
dp83869->port_mirroring = DP83869_PORT_MIRRORING_DIS;
|
|
|
|
ret = 0;
|
|
}
|
|
|
|
if (of_property_read_u32(of_node, "rx-fifo-depth",
|
|
&dp83869->rx_fifo_depth))
|
|
dp83869->rx_fifo_depth = DP83869_PHYCR_FIFO_DEPTH_4_B_NIB;
|
|
|
|
if (of_property_read_u32(of_node, "tx-fifo-depth",
|
|
&dp83869->tx_fifo_depth))
|
|
dp83869->tx_fifo_depth = DP83869_PHYCR_FIFO_DEPTH_4_B_NIB;
|
|
|
|
dp83869->rx_int_delay = phy_get_internal_delay(phydev, dev,
|
|
&dp83869_internal_delay[0],
|
|
delay_size, true);
|
|
if (dp83869->rx_int_delay < 0)
|
|
dp83869->rx_int_delay =
|
|
dp83869_internal_delay[DP83869_CLK_DELAY_DEF];
|
|
|
|
dp83869->tx_int_delay = phy_get_internal_delay(phydev, dev,
|
|
&dp83869_internal_delay[0],
|
|
delay_size, false);
|
|
if (dp83869->tx_int_delay < 0)
|
|
dp83869->tx_int_delay =
|
|
dp83869_internal_delay[DP83869_CLK_DELAY_DEF];
|
|
|
|
return ret;
|
|
}
|
|
#else
|
|
static int dp83869_of_init(struct phy_device *phydev)
|
|
{
|
|
return dp83869_set_strapped_mode(phydev);
|
|
}
|
|
#endif /* CONFIG_OF_MDIO */
|
|
|
|
static int dp83869_configure_rgmii(struct phy_device *phydev,
|
|
struct dp83869_private *dp83869)
|
|
{
|
|
int ret = 0, val;
|
|
|
|
if (phy_interface_is_rgmii(phydev)) {
|
|
val = phy_read(phydev, MII_DP83869_PHYCTRL);
|
|
if (val < 0)
|
|
return val;
|
|
|
|
val &= ~DP83869_PHYCR_FIFO_DEPTH_MASK;
|
|
val |= (dp83869->tx_fifo_depth << DP83869_TX_FIFO_SHIFT);
|
|
val |= (dp83869->rx_fifo_depth << DP83869_RX_FIFO_SHIFT);
|
|
|
|
ret = phy_write(phydev, MII_DP83869_PHYCTRL, val);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (dp83869->io_impedance >= 0)
|
|
ret = phy_modify_mmd(phydev, DP83869_DEVADDR,
|
|
DP83869_IO_MUX_CFG,
|
|
DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL,
|
|
dp83869->io_impedance &
|
|
DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dp83869_configure_fiber(struct phy_device *phydev,
|
|
struct dp83869_private *dp83869)
|
|
{
|
|
int bmcr;
|
|
int ret;
|
|
|
|
/* Only allow advertising what this PHY supports */
|
|
linkmode_and(phydev->advertising, phydev->advertising,
|
|
phydev->supported);
|
|
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported);
|
|
linkmode_set_bit(ADVERTISED_FIBRE, phydev->advertising);
|
|
|
|
if (dp83869->mode == DP83869_RGMII_1000_BASE) {
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
|
|
phydev->supported);
|
|
} else {
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT,
|
|
phydev->supported);
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Half_BIT,
|
|
phydev->supported);
|
|
|
|
/* Auto neg is not supported in 100base FX mode */
|
|
bmcr = phy_read(phydev, MII_BMCR);
|
|
if (bmcr < 0)
|
|
return bmcr;
|
|
|
|
phydev->autoneg = AUTONEG_DISABLE;
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->advertising);
|
|
|
|
if (bmcr & BMCR_ANENABLE) {
|
|
ret = phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Update advertising from supported */
|
|
linkmode_or(phydev->advertising, phydev->advertising,
|
|
phydev->supported);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dp83869_configure_mode(struct phy_device *phydev,
|
|
struct dp83869_private *dp83869)
|
|
{
|
|
int phy_ctrl_val;
|
|
int ret;
|
|
|
|
if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET ||
|
|
dp83869->mode > DP83869_SGMII_COPPER_ETHERNET)
|
|
return -EINVAL;
|
|
|
|
/* Below init sequence for each operational mode is defined in
|
|
* section 9.4.8 of the datasheet.
|
|
*/
|
|
ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE,
|
|
dp83869->mode);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = phy_write(phydev, MII_BMCR, MII_DP83869_BMCR_DEFAULT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
phy_ctrl_val = (dp83869->rx_fifo_depth << DP83869_RX_FIFO_SHIFT |
|
|
dp83869->tx_fifo_depth << DP83869_TX_FIFO_SHIFT |
|
|
DP83869_PHY_CTRL_DEFAULT);
|
|
|
|
switch (dp83869->mode) {
|
|
case DP83869_RGMII_COPPER_ETHERNET:
|
|
ret = phy_write(phydev, MII_DP83869_PHYCTRL,
|
|
phy_ctrl_val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = phy_write(phydev, MII_CTRL1000, DP83869_CFG1_DEFAULT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = dp83869_configure_rgmii(phydev, dp83869);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
case DP83869_RGMII_SGMII_BRIDGE:
|
|
ret = phy_modify_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE,
|
|
DP83869_SGMII_RGMII_BRIDGE,
|
|
DP83869_SGMII_RGMII_BRIDGE);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = phy_write_mmd(phydev, DP83869_DEVADDR,
|
|
DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
break;
|
|
case DP83869_1000M_MEDIA_CONVERT:
|
|
ret = phy_write(phydev, MII_DP83869_PHYCTRL,
|
|
phy_ctrl_val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = phy_write_mmd(phydev, DP83869_DEVADDR,
|
|
DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
case DP83869_100M_MEDIA_CONVERT:
|
|
ret = phy_write(phydev, MII_DP83869_PHYCTRL,
|
|
phy_ctrl_val);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
case DP83869_SGMII_COPPER_ETHERNET:
|
|
ret = phy_write(phydev, MII_DP83869_PHYCTRL,
|
|
phy_ctrl_val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = phy_write(phydev, MII_CTRL1000, DP83869_CFG1_DEFAULT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = phy_write_mmd(phydev, DP83869_DEVADDR,
|
|
DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
break;
|
|
case DP83869_RGMII_1000_BASE:
|
|
case DP83869_RGMII_100_BASE:
|
|
ret = dp83869_configure_fiber(phydev, dp83869);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dp83869_config_init(struct phy_device *phydev)
|
|
{
|
|
struct dp83869_private *dp83869 = phydev->priv;
|
|
int ret, val;
|
|
|
|
/* Force speed optimization for the PHY even if it strapped */
|
|
ret = phy_modify(phydev, DP83869_CFG2, DP83869_DOWNSHIFT_EN,
|
|
DP83869_DOWNSHIFT_EN);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = dp83869_configure_mode(phydev, dp83869);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Enable Interrupt output INT_OE in CFG4 register */
|
|
if (phy_interrupt_is_valid(phydev)) {
|
|
val = phy_read(phydev, DP83869_CFG4);
|
|
val |= DP83869_INT_OE;
|
|
phy_write(phydev, DP83869_CFG4, val);
|
|
}
|
|
|
|
if (dp83869->port_mirroring != DP83869_PORT_MIRRORING_KEEP)
|
|
dp83869_config_port_mirroring(phydev);
|
|
|
|
/* Clock output selection if muxing property is set */
|
|
if (dp83869->clk_output_sel != DP83869_CLK_O_SEL_REF_CLK)
|
|
ret = phy_modify_mmd(phydev,
|
|
DP83869_DEVADDR, DP83869_IO_MUX_CFG,
|
|
DP83869_IO_MUX_CFG_CLK_O_SEL_MASK,
|
|
dp83869->clk_output_sel <<
|
|
DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT);
|
|
|
|
if (phy_interface_is_rgmii(phydev)) {
|
|
ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIIDCTL,
|
|
dp83869->rx_int_delay |
|
|
dp83869->tx_int_delay << DP83869_RGMII_CLK_DELAY_SHIFT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIICTL);
|
|
val |= (DP83869_RGMII_TX_CLK_DELAY_EN |
|
|
DP83869_RGMII_RX_CLK_DELAY_EN);
|
|
|
|
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
|
|
val &= ~(DP83869_RGMII_TX_CLK_DELAY_EN |
|
|
DP83869_RGMII_RX_CLK_DELAY_EN);
|
|
|
|
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
|
|
val &= ~DP83869_RGMII_TX_CLK_DELAY_EN;
|
|
|
|
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)
|
|
val &= ~DP83869_RGMII_RX_CLK_DELAY_EN;
|
|
|
|
ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIICTL,
|
|
val);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dp83869_probe(struct phy_device *phydev)
|
|
{
|
|
struct dp83869_private *dp83869;
|
|
int ret;
|
|
|
|
dp83869 = devm_kzalloc(&phydev->mdio.dev, sizeof(*dp83869),
|
|
GFP_KERNEL);
|
|
if (!dp83869)
|
|
return -ENOMEM;
|
|
|
|
phydev->priv = dp83869;
|
|
|
|
ret = dp83869_of_init(phydev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (dp83869->mode == DP83869_RGMII_100_BASE ||
|
|
dp83869->mode == DP83869_RGMII_1000_BASE)
|
|
phydev->port = PORT_FIBRE;
|
|
|
|
return dp83869_config_init(phydev);
|
|
}
|
|
|
|
static int dp83869_phy_reset(struct phy_device *phydev)
|
|
{
|
|
int ret;
|
|
|
|
ret = phy_write(phydev, DP83869_CTRL, DP83869_SW_RESET);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
usleep_range(10, 20);
|
|
|
|
/* Global sw reset sets all registers to default.
|
|
* Need to set the registers in the PHY to the right config.
|
|
*/
|
|
return dp83869_config_init(phydev);
|
|
}
|
|
|
|
|
|
#define DP83869_PHY_DRIVER(_id, _name) \
|
|
{ \
|
|
PHY_ID_MATCH_MODEL(_id), \
|
|
.name = (_name), \
|
|
.probe = dp83869_probe, \
|
|
.config_init = dp83869_config_init, \
|
|
.soft_reset = dp83869_phy_reset, \
|
|
.config_intr = dp83869_config_intr, \
|
|
.handle_interrupt = dp83869_handle_interrupt, \
|
|
.read_status = dp83869_read_status, \
|
|
.get_tunable = dp83869_get_tunable, \
|
|
.set_tunable = dp83869_set_tunable, \
|
|
.get_wol = dp83869_get_wol, \
|
|
.set_wol = dp83869_set_wol, \
|
|
.suspend = genphy_suspend, \
|
|
.resume = genphy_resume, \
|
|
}
|
|
|
|
static struct phy_driver dp83869_driver[] = {
|
|
DP83869_PHY_DRIVER(DP83869_PHY_ID, "TI DP83869"),
|
|
DP83869_PHY_DRIVER(DP83561_PHY_ID, "TI DP83561-SP"),
|
|
|
|
};
|
|
module_phy_driver(dp83869_driver);
|
|
|
|
static struct mdio_device_id __maybe_unused dp83869_tbl[] = {
|
|
{ PHY_ID_MATCH_MODEL(DP83869_PHY_ID) },
|
|
{ PHY_ID_MATCH_MODEL(DP83561_PHY_ID) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(mdio, dp83869_tbl);
|
|
|
|
MODULE_DESCRIPTION("Texas Instruments DP83869 PHY driver");
|
|
MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com");
|
|
MODULE_LICENSE("GPL v2");
|