// SPDX-License-Identifier: GPL-2.0+
/*
- * Driver for Motorcomm PHYs
+ * Motorcomm 8511/8521 PHY driver.
*
* Author: Peter Geis <pgwipeout@gmail.com>
+ * Author: Frank <Frank.Sae@motor-comm.com>
*/
+#include <linux/etherdevice.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/phy.h>
#define PHY_ID_YT8511 0x0000010a
+#define PHY_ID_YT8521 0x0000011A
+
+/* YT8521 Register Overview
+ * UTP Register space | FIBER Register space
+ * ------------------------------------------------------------
+ * | UTP MII | FIBER MII |
+ * | UTP MMD | |
+ * | UTP Extended | FIBER Extended |
+ * ------------------------------------------------------------
+ * | Common Extended |
+ * ------------------------------------------------------------
+ */
+
+/* 0x10 ~ 0x15 , 0x1E and 0x1F are common MII registers of yt phy */
+
+/* Specific Function Control Register */
+#define YTPHY_SPECIFIC_FUNCTION_CONTROL_REG 0x10
+
+/* 2b00 Manual MDI configuration
+ * 2b01 Manual MDIX configuration
+ * 2b10 Reserved
+ * 2b11 Enable automatic crossover for all modes *default*
+ */
+#define YTPHY_SFCR_MDI_CROSSOVER_MODE_MASK (BIT(6) | BIT(5))
+#define YTPHY_SFCR_CROSSOVER_EN BIT(3)
+#define YTPHY_SFCR_SQE_TEST_EN BIT(2)
+#define YTPHY_SFCR_POLARITY_REVERSAL_EN BIT(1)
+#define YTPHY_SFCR_JABBER_DIS BIT(0)
+
+/* Specific Status Register */
+#define YTPHY_SPECIFIC_STATUS_REG 0x11
+#define YTPHY_SSR_SPEED_MODE_OFFSET 14
+
+#define YTPHY_SSR_SPEED_MODE_MASK (BIT(15) | BIT(14))
+#define YTPHY_SSR_SPEED_10M 0x0
+#define YTPHY_SSR_SPEED_100M 0x1
+#define YTPHY_SSR_SPEED_1000M 0x2
+#define YTPHY_SSR_DUPLEX_OFFSET 13
+#define YTPHY_SSR_DUPLEX BIT(13)
+#define YTPHY_SSR_PAGE_RECEIVED BIT(12)
+#define YTPHY_SSR_SPEED_DUPLEX_RESOLVED BIT(11)
+#define YTPHY_SSR_LINK BIT(10)
+#define YTPHY_SSR_MDIX_CROSSOVER BIT(6)
+#define YTPHY_SSR_DOWNGRADE BIT(5)
+#define YTPHY_SSR_TRANSMIT_PAUSE BIT(3)
+#define YTPHY_SSR_RECEIVE_PAUSE BIT(2)
+#define YTPHY_SSR_POLARITY BIT(1)
+#define YTPHY_SSR_JABBER BIT(0)
+
+/* Interrupt enable Register */
+#define YTPHY_INTERRUPT_ENABLE_REG 0x12
+#define YTPHY_IER_WOL BIT(6)
+
+/* Interrupt Status Register */
+#define YTPHY_INTERRUPT_STATUS_REG 0x13
+#define YTPHY_ISR_AUTONEG_ERR BIT(15)
+#define YTPHY_ISR_SPEED_CHANGED BIT(14)
+#define YTPHY_ISR_DUPLEX_CHANGED BIT(13)
+#define YTPHY_ISR_PAGE_RECEIVED BIT(12)
+#define YTPHY_ISR_LINK_FAILED BIT(11)
+#define YTPHY_ISR_LINK_SUCCESSED BIT(10)
+#define YTPHY_ISR_WOL BIT(6)
+#define YTPHY_ISR_WIRESPEED_DOWNGRADE BIT(5)
+#define YTPHY_ISR_SERDES_LINK_FAILED BIT(3)
+#define YTPHY_ISR_SERDES_LINK_SUCCESSED BIT(2)
+#define YTPHY_ISR_POLARITY_CHANGED BIT(1)
+#define YTPHY_ISR_JABBER_HAPPENED BIT(0)
+
+/* Speed Auto Downgrade Control Register */
+#define YTPHY_SPEED_AUTO_DOWNGRADE_CONTROL_REG 0x14
+#define YTPHY_SADCR_SPEED_DOWNGRADE_EN BIT(5)
+
+/* If these bits are set to 3, the PHY attempts five times ( 3(set value) +
+ * additional 2) before downgrading, default 0x3
+ */
+#define YTPHY_SADCR_SPEED_RETRY_LIMIT (0x3 << 2)
+
+/* Rx Error Counter Register */
+#define YTPHY_RX_ERROR_COUNTER_REG 0x15
+
+/* Extended Register's Address Offset Register */
+#define YTPHY_PAGE_SELECT 0x1E
+
+/* Extended Register's Data Register */
+#define YTPHY_PAGE_DATA 0x1F
+
+/* FIBER Auto-Negotiation link partner ability */
+#define YTPHY_FLPA_PAUSE (0x3 << 7)
+#define YTPHY_FLPA_ASYM_PAUSE (0x2 << 7)
#define YT8511_PAGE_SELECT 0x1e
#define YT8511_PAGE 0x1f
#define YT8511_DELAY_FE_TX_EN (0xf << 12)
#define YT8511_DELAY_FE_TX_DIS (0x2 << 12)
+/* Extended register is different from MMD Register and MII Register.
+ * We can use ytphy_read_ext/ytphy_write_ext/ytphy_modify_ext function to
+ * operate extended register.
+ * Extended Register start
+ */
+
+/* Phy gmii clock gating Register */
+#define YT8521_CLOCK_GATING_REG 0xC
+#define YT8521_CGR_RX_CLK_EN BIT(12)
+
+#define YT8521_EXTREG_SLEEP_CONTROL1_REG 0x27
+#define YT8521_ESC1R_SLEEP_SW BIT(15)
+#define YT8521_ESC1R_PLLON_SLP BIT(14)
+
+/* Phy fiber Link timer cfg2 Register */
+#define YT8521_LINK_TIMER_CFG2_REG 0xA5
+#define YT8521_LTCR_EN_AUTOSEN BIT(15)
+
+/* 0xA000, 0xA001, 0xA003 ,and 0xA006 ~ 0xA00A are common ext registers
+ * of yt8521 phy. There is no need to switch reg space when operating these
+ * registers.
+ */
+
+#define YT8521_REG_SPACE_SELECT_REG 0xA000
+#define YT8521_RSSR_SPACE_MASK BIT(1)
+#define YT8521_RSSR_FIBER_SPACE (0x1 << 1)
+#define YT8521_RSSR_UTP_SPACE (0x0 << 1)
+#define YT8521_RSSR_TO_BE_ARBITRATED (0xFF)
+
+#define YT8521_CHIP_CONFIG_REG 0xA001
+#define YT8521_CCR_SW_RST BIT(15)
+
+#define YT8521_CCR_MODE_SEL_MASK (BIT(2) | BIT(1) | BIT(0))
+#define YT8521_CCR_MODE_UTP_TO_RGMII 0
+#define YT8521_CCR_MODE_FIBER_TO_RGMII 1
+#define YT8521_CCR_MODE_UTP_FIBER_TO_RGMII 2
+#define YT8521_CCR_MODE_UTP_TO_SGMII 3
+#define YT8521_CCR_MODE_SGPHY_TO_RGMAC 4
+#define YT8521_CCR_MODE_SGMAC_TO_RGPHY 5
+#define YT8521_CCR_MODE_UTP_TO_FIBER_AUTO 6
+#define YT8521_CCR_MODE_UTP_TO_FIBER_FORCE 7
+
+/* 3 phy polling modes,poll mode combines utp and fiber mode*/
+#define YT8521_MODE_FIBER 0x1
+#define YT8521_MODE_UTP 0x2
+#define YT8521_MODE_POLL 0x3
+
+#define YT8521_RGMII_CONFIG1_REG 0xA003
+
+/* TX Gig-E Delay is bits 3:0, default 0x1
+ * TX Fast-E Delay is bits 7:4, default 0xf
+ * RX Delay is bits 13:10, default 0x0
+ * Delay = 150ps * N
+ * On = 2250ps, off = 0ps
+ */
+#define YT8521_RC1R_RX_DELAY_MASK (0xF << 10)
+#define YT8521_RC1R_RX_DELAY_EN (0xF << 10)
+#define YT8521_RC1R_RX_DELAY_DIS (0x0 << 10)
+#define YT8521_RC1R_FE_TX_DELAY_MASK (0xF << 4)
+#define YT8521_RC1R_FE_TX_DELAY_EN (0xF << 4)
+#define YT8521_RC1R_FE_TX_DELAY_DIS (0x0 << 4)
+#define YT8521_RC1R_GE_TX_DELAY_MASK (0xF << 0)
+#define YT8521_RC1R_GE_TX_DELAY_EN (0xF << 0)
+#define YT8521_RC1R_GE_TX_DELAY_DIS (0x0 << 0)
+
+#define YTPHY_MISC_CONFIG_REG 0xA006
+#define YTPHY_MCR_FIBER_SPEED_MASK BIT(0)
+#define YTPHY_MCR_FIBER_1000BX (0x1 << 0)
+#define YTPHY_MCR_FIBER_100FX (0x0 << 0)
+
+/* WOL MAC ADDR: MACADDR2(highest), MACADDR1(middle), MACADDR0(lowest) */
+#define YTPHY_WOL_MACADDR2_REG 0xA007
+#define YTPHY_WOL_MACADDR1_REG 0xA008
+#define YTPHY_WOL_MACADDR0_REG 0xA009
+
+#define YTPHY_WOL_CONFIG_REG 0xA00A
+#define YTPHY_WCR_INTR_SEL BIT(6)
+#define YTPHY_WCR_ENABLE BIT(3)
+
+/* 2b00 84ms
+ * 2b01 168ms *default*
+ * 2b10 336ms
+ * 2b11 672ms
+ */
+#define YTPHY_WCR_PULSE_WIDTH_MASK (BIT(2) | BIT(1))
+#define YTPHY_WCR_PULSE_WIDTH_672MS (BIT(2) | BIT(1))
+
+/* 1b0 Interrupt and WOL events is level triggered and active LOW *default*
+ * 1b1 Interrupt and WOL events is pulse triggered and active LOW
+ */
+#define YTPHY_WCR_TYPE_PULSE BIT(0)
+
+/* Extended Register end */
+
+struct yt8521_priv {
+ /* combo_advertising is used for case of YT8521 in combo mode,
+ * this means that yt8521 may work in utp or fiber mode which depends
+ * on which media is connected (YT8521_RSSR_TO_BE_ARBITRATED).
+ */
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(combo_advertising);
+
+ /* YT8521_MODE_FIBER / YT8521_MODE_UTP / YT8521_MODE_POLL*/
+ u8 polling_mode;
+ u8 strap_mode; /* 8 working modes */
+ /* current reg page of yt8521 phy:
+ * YT8521_RSSR_UTP_SPACE
+ * YT8521_RSSR_FIBER_SPACE
+ * YT8521_RSSR_TO_BE_ARBITRATED
+ */
+ u8 reg_page;
+};
+
+/**
+ * ytphy_read_ext() - read a PHY's extended register
+ * @phydev: a pointer to a &struct phy_device
+ * @regnum: register number to read
+ *
+ * NOTE:The caller must have taken the MDIO bus lock.
+ *
+ * returns the value of regnum reg or negative error code
+ */
+static int ytphy_read_ext(struct phy_device *phydev, u16 regnum)
+{
+ int ret;
+
+ ret = __phy_write(phydev, YTPHY_PAGE_SELECT, regnum);
+ if (ret < 0)
+ return ret;
+
+ return __phy_read(phydev, YTPHY_PAGE_DATA);
+}
+
+/**
+ * ytphy_read_ext_with_lock() - read a PHY's extended register
+ * @phydev: a pointer to a &struct phy_device
+ * @regnum: register number to read
+ *
+ * returns the value of regnum reg or negative error code
+ */
+static int ytphy_read_ext_with_lock(struct phy_device *phydev, u16 regnum)
+{
+ int ret;
+
+ phy_lock_mdio_bus(phydev);
+ ret = ytphy_read_ext(phydev, regnum);
+ phy_unlock_mdio_bus(phydev);
+
+ return ret;
+}
+
+/**
+ * ytphy_write_ext() - write a PHY's extended register
+ * @phydev: a pointer to a &struct phy_device
+ * @regnum: register number to write
+ * @val: value to write to @regnum
+ *
+ * NOTE:The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative error code
+ */
+static int ytphy_write_ext(struct phy_device *phydev, u16 regnum, u16 val)
+{
+ int ret;
+
+ ret = __phy_write(phydev, YTPHY_PAGE_SELECT, regnum);
+ if (ret < 0)
+ return ret;
+
+ return __phy_write(phydev, YTPHY_PAGE_DATA, val);
+}
+
+/**
+ * ytphy_write_ext_with_lock() - write a PHY's extended register
+ * @phydev: a pointer to a &struct phy_device
+ * @regnum: register number to write
+ * @val: value to write to @regnum
+ *
+ * returns 0 or negative error code
+ */
+static int ytphy_write_ext_with_lock(struct phy_device *phydev, u16 regnum,
+ u16 val)
+{
+ int ret;
+
+ phy_lock_mdio_bus(phydev);
+ ret = ytphy_write_ext(phydev, regnum, val);
+ phy_unlock_mdio_bus(phydev);
+
+ return ret;
+}
+
+/**
+ * ytphy_modify_ext() - bits modify a PHY's extended register
+ * @phydev: a pointer to a &struct phy_device
+ * @regnum: register number to write
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * NOTE: Convenience function which allows a PHY's extended register to be
+ * modified as new register value = (old register value & ~mask) | set.
+ * The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative error code
+ */
+static int ytphy_modify_ext(struct phy_device *phydev, u16 regnum, u16 mask,
+ u16 set)
+{
+ int ret;
+
+ ret = __phy_write(phydev, YTPHY_PAGE_SELECT, regnum);
+ if (ret < 0)
+ return ret;
+
+ return __phy_modify(phydev, YTPHY_PAGE_DATA, mask, set);
+}
+
+/**
+ * ytphy_modify_ext_with_lock() - bits modify a PHY's extended register
+ * @phydev: a pointer to a &struct phy_device
+ * @regnum: register number to write
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * NOTE: Convenience function which allows a PHY's extended register to be
+ * modified as new register value = (old register value & ~mask) | set.
+ *
+ * returns 0 or negative error code
+ */
+static int ytphy_modify_ext_with_lock(struct phy_device *phydev, u16 regnum,
+ u16 mask, u16 set)
+{
+ int ret;
+
+ phy_lock_mdio_bus(phydev);
+ ret = ytphy_modify_ext(phydev, regnum, mask, set);
+ phy_unlock_mdio_bus(phydev);
+
+ return ret;
+}
+
+/**
+ * ytphy_get_wol() - report whether wake-on-lan is enabled
+ * @phydev: a pointer to a &struct phy_device
+ * @wol: a pointer to a &struct ethtool_wolinfo
+ *
+ * NOTE: YTPHY_WOL_CONFIG_REG is common ext reg.
+ */
+static void ytphy_get_wol(struct phy_device *phydev,
+ struct ethtool_wolinfo *wol)
+{
+ int wol_config;
+
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = 0;
+
+ wol_config = ytphy_read_ext_with_lock(phydev, YTPHY_WOL_CONFIG_REG);
+ if (wol_config < 0)
+ return;
+
+ if (wol_config & YTPHY_WCR_ENABLE)
+ wol->wolopts |= WAKE_MAGIC;
+}
+
+/**
+ * ytphy_set_wol() - turn wake-on-lan on or off
+ * @phydev: a pointer to a &struct phy_device
+ * @wol: a pointer to a &struct ethtool_wolinfo
+ *
+ * NOTE: YTPHY_WOL_CONFIG_REG, YTPHY_WOL_MACADDR2_REG, YTPHY_WOL_MACADDR1_REG
+ * and YTPHY_WOL_MACADDR0_REG are common ext reg. The
+ * YTPHY_INTERRUPT_ENABLE_REG of UTP is special, fiber also use this register.
+ *
+ * returns 0 or negative errno code
+ */
+static int ytphy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
+{
+ struct net_device *p_attached_dev;
+ const u16 mac_addr_reg[] = {
+ YTPHY_WOL_MACADDR2_REG,
+ YTPHY_WOL_MACADDR1_REG,
+ YTPHY_WOL_MACADDR0_REG,
+ };
+ const u8 *mac_addr;
+ int old_page;
+ int ret = 0;
+ u16 mask;
+ u16 val;
+ u8 i;
+
+ if (wol->wolopts & WAKE_MAGIC) {
+ p_attached_dev = phydev->attached_dev;
+ if (!p_attached_dev)
+ return -ENODEV;
+
+ mac_addr = (const u8 *)p_attached_dev->dev_addr;
+ if (!is_valid_ether_addr(mac_addr))
+ return -EINVAL;
+
+ /* lock mdio bus then switch to utp reg space */
+ old_page = phy_select_page(phydev, YT8521_RSSR_UTP_SPACE);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ /* Store the device address for the magic packet */
+ for (i = 0; i < 3; i++) {
+ ret = ytphy_write_ext(phydev, mac_addr_reg[i],
+ ((mac_addr[i * 2] << 8)) |
+ (mac_addr[i * 2 + 1]));
+ if (ret < 0)
+ goto err_restore_page;
+ }
+
+ /* Enable WOL feature */
+ mask = YTPHY_WCR_PULSE_WIDTH_MASK | YTPHY_WCR_INTR_SEL;
+ val = YTPHY_WCR_ENABLE | YTPHY_WCR_INTR_SEL;
+ val |= YTPHY_WCR_TYPE_PULSE | YTPHY_WCR_PULSE_WIDTH_672MS;
+ ret = ytphy_modify_ext(phydev, YTPHY_WOL_CONFIG_REG, mask, val);
+ if (ret < 0)
+ goto err_restore_page;
+
+ /* Enable WOL interrupt */
+ ret = __phy_modify(phydev, YTPHY_INTERRUPT_ENABLE_REG, 0,
+ YTPHY_IER_WOL);
+ if (ret < 0)
+ goto err_restore_page;
+
+ } else {
+ old_page = phy_select_page(phydev, YT8521_RSSR_UTP_SPACE);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ /* Disable WOL feature */
+ mask = YTPHY_WCR_ENABLE | YTPHY_WCR_INTR_SEL;
+ ret = ytphy_modify_ext(phydev, YTPHY_WOL_CONFIG_REG, mask, 0);
+
+ /* Disable WOL interrupt */
+ ret = __phy_modify(phydev, YTPHY_INTERRUPT_ENABLE_REG,
+ YTPHY_IER_WOL, 0);
+ if (ret < 0)
+ goto err_restore_page;
+ }
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
static int yt8511_read_page(struct phy_device *phydev)
{
return __phy_read(phydev, YT8511_PAGE_SELECT);
return phy_restore_page(phydev, oldpage, ret);
}
+/**
+ * yt8521_read_page() - read reg page
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns current reg space of yt8521 (YT8521_RSSR_FIBER_SPACE/
+ * YT8521_RSSR_UTP_SPACE) or negative errno code
+ */
+static int yt8521_read_page(struct phy_device *phydev)
+{
+ int old_page;
+
+ old_page = ytphy_read_ext(phydev, YT8521_REG_SPACE_SELECT_REG);
+ if (old_page < 0)
+ return old_page;
+
+ if ((old_page & YT8521_RSSR_SPACE_MASK) == YT8521_RSSR_FIBER_SPACE)
+ return YT8521_RSSR_FIBER_SPACE;
+
+ return YT8521_RSSR_UTP_SPACE;
+};
+
+/**
+ * yt8521_write_page() - write reg page
+ * @phydev: a pointer to a &struct phy_device
+ * @page: The reg page(YT8521_RSSR_FIBER_SPACE/YT8521_RSSR_UTP_SPACE) to write.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_write_page(struct phy_device *phydev, int page)
+{
+ int mask = YT8521_RSSR_SPACE_MASK;
+ int set;
+
+ if ((page & YT8521_RSSR_SPACE_MASK) == YT8521_RSSR_FIBER_SPACE)
+ set = YT8521_RSSR_FIBER_SPACE;
+ else
+ set = YT8521_RSSR_UTP_SPACE;
+
+ return ytphy_modify_ext(phydev, YT8521_REG_SPACE_SELECT_REG, mask, set);
+};
+
+/**
+ * yt8521_probe() - read chip config then set suitable polling_mode
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_probe(struct phy_device *phydev)
+{
+ struct device *dev = &phydev->mdio.dev;
+ struct yt8521_priv *priv;
+ int chip_config;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ phydev->priv = priv;
+
+ chip_config = ytphy_read_ext_with_lock(phydev, YT8521_CHIP_CONFIG_REG);
+ if (chip_config < 0)
+ return chip_config;
+
+ priv->strap_mode = chip_config & YT8521_CCR_MODE_SEL_MASK;
+ switch (priv->strap_mode) {
+ case YT8521_CCR_MODE_FIBER_TO_RGMII:
+ case YT8521_CCR_MODE_SGPHY_TO_RGMAC:
+ case YT8521_CCR_MODE_SGMAC_TO_RGPHY:
+ priv->polling_mode = YT8521_MODE_FIBER;
+ priv->reg_page = YT8521_RSSR_FIBER_SPACE;
+ phydev->port = PORT_FIBRE;
+ break;
+ case YT8521_CCR_MODE_UTP_FIBER_TO_RGMII:
+ case YT8521_CCR_MODE_UTP_TO_FIBER_AUTO:
+ case YT8521_CCR_MODE_UTP_TO_FIBER_FORCE:
+ priv->polling_mode = YT8521_MODE_POLL;
+ priv->reg_page = YT8521_RSSR_TO_BE_ARBITRATED;
+ phydev->port = PORT_NONE;
+ break;
+ case YT8521_CCR_MODE_UTP_TO_SGMII:
+ case YT8521_CCR_MODE_UTP_TO_RGMII:
+ priv->polling_mode = YT8521_MODE_UTP;
+ priv->reg_page = YT8521_RSSR_UTP_SPACE;
+ phydev->port = PORT_TP;
+ break;
+ }
+ /* set default reg space */
+ if (priv->reg_page != YT8521_RSSR_TO_BE_ARBITRATED) {
+ ret = ytphy_write_ext_with_lock(phydev,
+ YT8521_REG_SPACE_SELECT_REG,
+ priv->reg_page);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * ytphy_utp_read_lpa() - read LPA then setup lp_advertising for utp
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * NOTE:The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int ytphy_utp_read_lpa(struct phy_device *phydev)
+{
+ int lpa, lpagb;
+
+ if (phydev->autoneg == AUTONEG_ENABLE) {
+ if (!phydev->autoneg_complete) {
+ mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising,
+ 0);
+ mii_lpa_mod_linkmode_lpa_t(phydev->lp_advertising, 0);
+ return 0;
+ }
+
+ if (phydev->is_gigabit_capable) {
+ lpagb = __phy_read(phydev, MII_STAT1000);
+ if (lpagb < 0)
+ return lpagb;
+
+ if (lpagb & LPA_1000MSFAIL) {
+ int adv = __phy_read(phydev, MII_CTRL1000);
+
+ if (adv < 0)
+ return adv;
+
+ if (adv & CTL1000_ENABLE_MASTER)
+ phydev_err(phydev, "Master/Slave resolution failed, maybe conflicting manual settings?\n");
+ else
+ phydev_err(phydev, "Master/Slave resolution failed\n");
+ return -ENOLINK;
+ }
+
+ mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising,
+ lpagb);
+ }
+
+ lpa = __phy_read(phydev, MII_LPA);
+ if (lpa < 0)
+ return lpa;
+
+ mii_lpa_mod_linkmode_lpa_t(phydev->lp_advertising, lpa);
+ } else {
+ linkmode_zero(phydev->lp_advertising);
+ }
+
+ return 0;
+}
+
+/**
+ * yt8521_adjust_status() - update speed and duplex to phydev. when in fiber
+ * mode, adjust speed and duplex.
+ * @phydev: a pointer to a &struct phy_device
+ * @status: yt8521 status read from YTPHY_SPECIFIC_STATUS_REG
+ * @is_utp: false(yt8521 work in fiber mode) or true(yt8521 work in utp mode)
+ *
+ * NOTE:The caller must have taken the MDIO bus lock.
+ *
+ * returns 0
+ */
+static int yt8521_adjust_status(struct phy_device *phydev, int status,
+ bool is_utp)
+{
+ int speed_mode, duplex;
+ int speed;
+ int err;
+ int lpa;
+
+ if (is_utp)
+ duplex = (status & YTPHY_SSR_DUPLEX) >> YTPHY_SSR_DUPLEX_OFFSET;
+ else
+ duplex = DUPLEX_FULL; /* for fiber, it always DUPLEX_FULL */
+
+ speed_mode = (status & YTPHY_SSR_SPEED_MODE_MASK) >>
+ YTPHY_SSR_SPEED_MODE_OFFSET;
+
+ switch (speed_mode) {
+ case YTPHY_SSR_SPEED_10M:
+ if (is_utp)
+ speed = SPEED_10;
+ else
+ /* for fiber, it will never run here, default to
+ * SPEED_UNKNOWN
+ */
+ speed = SPEED_UNKNOWN;
+ break;
+ case YTPHY_SSR_SPEED_100M:
+ speed = SPEED_100;
+ break;
+ case YTPHY_SSR_SPEED_1000M:
+ speed = SPEED_1000;
+ break;
+ default:
+ speed = SPEED_UNKNOWN;
+ break;
+ }
+
+ phydev->speed = speed;
+ phydev->duplex = duplex;
+
+ if (is_utp) {
+ err = ytphy_utp_read_lpa(phydev);
+ if (err < 0)
+ return err;
+
+ phy_resolve_aneg_pause(phydev);
+ } else {
+ lpa = __phy_read(phydev, MII_LPA);
+ if (lpa < 0)
+ return lpa;
+
+ /* only support 1000baseX Full */
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
+ phydev->lp_advertising, lpa & LPA_1000XFULL);
+
+ if (!(lpa & YTPHY_FLPA_PAUSE)) {
+ phydev->pause = 0;
+ phydev->asym_pause = 0;
+ } else if ((lpa & YTPHY_FLPA_ASYM_PAUSE)) {
+ phydev->pause = 1;
+ phydev->asym_pause = 1;
+ } else {
+ phydev->pause = 1;
+ phydev->asym_pause = 0;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * yt8521_read_status_paged() - determines the speed and duplex of one page
+ * @phydev: a pointer to a &struct phy_device
+ * @page: The reg page(YT8521_RSSR_FIBER_SPACE/YT8521_RSSR_UTP_SPACE) to
+ * operate.
+ *
+ * returns 1 (utp or fiber link),0 (no link) or negative errno code
+ */
+static int yt8521_read_status_paged(struct phy_device *phydev, int page)
+{
+ int fiber_latch_val;
+ int fiber_curr_val;
+ int old_page;
+ int ret = 0;
+ int status;
+ int link;
+
+ linkmode_zero(phydev->lp_advertising);
+ phydev->duplex = DUPLEX_UNKNOWN;
+ phydev->speed = SPEED_UNKNOWN;
+ phydev->asym_pause = 0;
+ phydev->pause = 0;
+
+ /* YT8521 has two reg space (utp/fiber) for linkup with utp/fiber
+ * respectively. but for utp/fiber combo mode, reg space should be
+ * arbitrated based on media priority. by default, utp takes
+ * priority. reg space should be properly set before read
+ * YTPHY_SPECIFIC_STATUS_REG.
+ */
+
+ page &= YT8521_RSSR_SPACE_MASK;
+ old_page = phy_select_page(phydev, page);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ /* Read YTPHY_SPECIFIC_STATUS_REG, which indicates the speed and duplex
+ * of the PHY is actually using.
+ */
+ ret = __phy_read(phydev, YTPHY_SPECIFIC_STATUS_REG);
+ if (ret < 0)
+ goto err_restore_page;
+
+ status = ret;
+ link = !!(status & YTPHY_SSR_LINK);
+
+ /* When PHY is in fiber mode, speed transferred from 1000Mbps to
+ * 100Mbps,there is not link down from YTPHY_SPECIFIC_STATUS_REG, so
+ * we need check MII_BMSR to identify such case.
+ */
+ if (page == YT8521_RSSR_FIBER_SPACE) {
+ ret = __phy_read(phydev, MII_BMSR);
+ if (ret < 0)
+ goto err_restore_page;
+
+ fiber_latch_val = ret;
+ ret = __phy_read(phydev, MII_BMSR);
+ if (ret < 0)
+ goto err_restore_page;
+
+ fiber_curr_val = ret;
+ if (link && fiber_latch_val != fiber_curr_val) {
+ link = 0;
+ phydev_info(phydev,
+ "%s, fiber link down detect, latch = %04x, curr = %04x\n",
+ __func__, fiber_latch_val, fiber_curr_val);
+ }
+ } else {
+ /* Read autonegotiation status */
+ ret = __phy_read(phydev, MII_BMSR);
+ if (ret < 0)
+ goto err_restore_page;
+
+ phydev->autoneg_complete = ret & BMSR_ANEGCOMPLETE ? 1 : 0;
+ }
+
+ if (link) {
+ if (page == YT8521_RSSR_UTP_SPACE)
+ yt8521_adjust_status(phydev, status, true);
+ else
+ yt8521_adjust_status(phydev, status, false);
+ }
+ return phy_restore_page(phydev, old_page, link);
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8521_read_status() - determines the negotiated speed and duplex
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_read_status(struct phy_device *phydev)
+{
+ struct yt8521_priv *priv = phydev->priv;
+ int link_fiber = 0;
+ int link_utp;
+ int link;
+ int ret;
+
+ if (priv->reg_page != YT8521_RSSR_TO_BE_ARBITRATED) {
+ link = yt8521_read_status_paged(phydev, priv->reg_page);
+ if (link < 0)
+ return link;
+ } else {
+ /* when page is YT8521_RSSR_TO_BE_ARBITRATED, arbitration is
+ * needed. by default, utp is higher priority.
+ */
+
+ link_utp = yt8521_read_status_paged(phydev,
+ YT8521_RSSR_UTP_SPACE);
+ if (link_utp < 0)
+ return link_utp;
+
+ if (!link_utp) {
+ link_fiber = yt8521_read_status_paged(phydev,
+ YT8521_RSSR_FIBER_SPACE);
+ if (link_fiber < 0)
+ return link_fiber;
+ }
+
+ link = link_utp || link_fiber;
+ }
+
+ if (link) {
+ if (phydev->link == 0) {
+ /* arbitrate reg space based on linkup media type. */
+ if (priv->polling_mode == YT8521_MODE_POLL &&
+ priv->reg_page == YT8521_RSSR_TO_BE_ARBITRATED) {
+ if (link_fiber)
+ priv->reg_page =
+ YT8521_RSSR_FIBER_SPACE;
+ else
+ priv->reg_page = YT8521_RSSR_UTP_SPACE;
+
+ ret = ytphy_write_ext_with_lock(phydev,
+ YT8521_REG_SPACE_SELECT_REG,
+ priv->reg_page);
+ if (ret < 0)
+ return ret;
+
+ phydev->port = link_fiber ? PORT_FIBRE : PORT_TP;
+
+ phydev_info(phydev, "%s, link up, media: %s\n",
+ __func__,
+ (phydev->port == PORT_TP) ?
+ "UTP" : "Fiber");
+ }
+ }
+ phydev->link = 1;
+ } else {
+ if (phydev->link == 1) {
+ phydev_info(phydev, "%s, link down, media: %s\n",
+ __func__, (phydev->port == PORT_TP) ?
+ "UTP" : "Fiber");
+
+ /* When in YT8521_MODE_POLL mode, need prepare for next
+ * arbitration.
+ */
+ if (priv->polling_mode == YT8521_MODE_POLL) {
+ priv->reg_page = YT8521_RSSR_TO_BE_ARBITRATED;
+ phydev->port = PORT_NONE;
+ }
+ }
+
+ phydev->link = 0;
+ }
+
+ return 0;
+}
+
+/**
+ * yt8521_modify_bmcr_paged - bits modify a PHY's BMCR register of one page
+ * @phydev: the phy_device struct
+ * @page: The reg page(YT8521_RSSR_FIBER_SPACE/YT8521_RSSR_UTP_SPACE) to operate
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * NOTE: Convenience function which allows a PHY's BMCR register to be
+ * modified as new register value = (old register value & ~mask) | set.
+ * YT8521 has two space (utp/fiber) and three mode (utp/fiber/poll), each space
+ * has MII_BMCR. poll mode combines utp and faber,so need do both.
+ * If it is reset, it will wait for completion.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_modify_bmcr_paged(struct phy_device *phydev, int page,
+ u16 mask, u16 set)
+{
+ int max_cnt = 500; /* the max wait time of reset ~ 500 ms */
+ int old_page;
+ int ret = 0;
+
+ old_page = phy_select_page(phydev, page & YT8521_RSSR_SPACE_MASK);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ ret = __phy_modify(phydev, MII_BMCR, mask, set);
+ if (ret < 0)
+ goto err_restore_page;
+
+ /* If it is reset, need to wait for the reset to complete */
+ if (set == BMCR_RESET) {
+ while (max_cnt--) {
+ usleep_range(1000, 1100);
+ ret = __phy_read(phydev, MII_BMCR);
+ if (ret < 0)
+ goto err_restore_page;
+
+ if (!(ret & BMCR_RESET))
+ return phy_restore_page(phydev, old_page, 0);
+ }
+ }
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8521_modify_utp_fiber_bmcr - bits modify a PHY's BMCR register
+ * @phydev: the phy_device struct
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * NOTE: Convenience function which allows a PHY's BMCR register to be
+ * modified as new register value = (old register value & ~mask) | set.
+ * YT8521 has two space (utp/fiber) and three mode (utp/fiber/poll), each space
+ * has MII_BMCR. poll mode combines utp and faber,so need do both.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_modify_utp_fiber_bmcr(struct phy_device *phydev, u16 mask,
+ u16 set)
+{
+ struct yt8521_priv *priv = phydev->priv;
+ int ret;
+
+ if (priv->reg_page != YT8521_RSSR_TO_BE_ARBITRATED) {
+ ret = yt8521_modify_bmcr_paged(phydev, priv->reg_page, mask,
+ set);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = yt8521_modify_bmcr_paged(phydev, YT8521_RSSR_UTP_SPACE,
+ mask, set);
+ if (ret < 0)
+ return ret;
+
+ ret = yt8521_modify_bmcr_paged(phydev, YT8521_RSSR_FIBER_SPACE,
+ mask, set);
+ if (ret < 0)
+ return ret;
+ }
+ return 0;
+}
+
+/**
+ * yt8521_soft_reset() - called to issue a PHY software reset
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_soft_reset(struct phy_device *phydev)
+{
+ return yt8521_modify_utp_fiber_bmcr(phydev, 0, BMCR_RESET);
+}
+
+/**
+ * yt8521_suspend() - suspend the hardware
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_suspend(struct phy_device *phydev)
+{
+ int wol_config;
+
+ /* YTPHY_WOL_CONFIG_REG is common ext reg */
+ wol_config = ytphy_read_ext_with_lock(phydev, YTPHY_WOL_CONFIG_REG);
+ if (wol_config < 0)
+ return wol_config;
+
+ /* if wol enable, do nothing */
+ if (wol_config & YTPHY_WCR_ENABLE)
+ return 0;
+
+ return yt8521_modify_utp_fiber_bmcr(phydev, 0, BMCR_PDOWN);
+}
+
+/**
+ * yt8521_resume() - resume the hardware
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_resume(struct phy_device *phydev)
+{
+ int ret;
+ int wol_config;
+
+ /* disable auto sleep */
+ ret = ytphy_modify_ext_with_lock(phydev,
+ YT8521_EXTREG_SLEEP_CONTROL1_REG,
+ YT8521_ESC1R_SLEEP_SW, 0);
+ if (ret < 0)
+ return ret;
+
+ wol_config = ytphy_read_ext_with_lock(phydev, YTPHY_WOL_CONFIG_REG);
+ if (wol_config < 0)
+ return wol_config;
+
+ /* if wol enable, do nothing */
+ if (wol_config & YTPHY_WCR_ENABLE)
+ return 0;
+
+ return yt8521_modify_utp_fiber_bmcr(phydev, BMCR_PDOWN, 0);
+}
+
+/**
+ * yt8521_config_init() - called to initialize the PHY
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_config_init(struct phy_device *phydev)
+{
+ int old_page;
+ int ret = 0;
+ u16 val;
+
+ old_page = phy_select_page(phydev, YT8521_RSSR_UTP_SPACE);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ switch (phydev->interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val = YT8521_RC1R_GE_TX_DELAY_DIS | YT8521_RC1R_GE_TX_DELAY_DIS;
+ val |= YT8521_RC1R_RX_DELAY_DIS;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ val = YT8521_RC1R_GE_TX_DELAY_DIS | YT8521_RC1R_GE_TX_DELAY_DIS;
+ val |= YT8521_RC1R_RX_DELAY_EN;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ val = YT8521_RC1R_GE_TX_DELAY_EN | YT8521_RC1R_GE_TX_DELAY_EN;
+ val |= YT8521_RC1R_RX_DELAY_DIS;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ val = YT8521_RC1R_GE_TX_DELAY_EN | YT8521_RC1R_GE_TX_DELAY_EN;
+ val |= YT8521_RC1R_RX_DELAY_EN;
+ break;
+ case PHY_INTERFACE_MODE_SGMII:
+ break;
+ default: /* do not support other modes */
+ ret = -EOPNOTSUPP;
+ goto err_restore_page;
+ }
+
+ /* set rgmii delay mode */
+ if (phydev->interface != PHY_INTERFACE_MODE_SGMII) {
+ ret = ytphy_modify_ext(phydev, YT8521_RGMII_CONFIG1_REG,
+ (YT8521_RC1R_RX_DELAY_MASK |
+ YT8521_RC1R_FE_TX_DELAY_MASK |
+ YT8521_RC1R_GE_TX_DELAY_MASK),
+ val);
+ if (ret < 0)
+ goto err_restore_page;
+ }
+
+ /* disable auto sleep */
+ ret = ytphy_modify_ext(phydev, YT8521_EXTREG_SLEEP_CONTROL1_REG,
+ YT8521_ESC1R_SLEEP_SW, 0);
+ if (ret < 0)
+ goto err_restore_page;
+
+ /* enable RXC clock when no wire plug */
+ ret = ytphy_modify_ext(phydev, YT8521_CLOCK_GATING_REG,
+ YT8521_CGR_RX_CLK_EN, 0);
+ if (ret < 0)
+ goto err_restore_page;
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8521_prepare_fiber_features() - A small helper function that setup
+ * fiber's features.
+ * @phydev: a pointer to a &struct phy_device
+ * @dst: a pointer to store fiber's features
+ */
+static void yt8521_prepare_fiber_features(struct phy_device *phydev,
+ unsigned long *dst)
+{
+ linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT, dst);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, dst);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, dst);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, dst);
+}
+
+/**
+ * yt8521_fiber_setup_forced - configures/forces speed from @phydev
+ * @phydev: target phy_device struct
+ *
+ * NOTE:The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_fiber_setup_forced(struct phy_device *phydev)
+{
+ u16 val;
+ int ret;
+
+ if (phydev->speed == SPEED_1000)
+ val = YTPHY_MCR_FIBER_1000BX;
+ else if (phydev->speed == SPEED_100)
+ val = YTPHY_MCR_FIBER_100FX;
+ else
+ return -EINVAL;
+
+ ret = __phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0);
+ if (ret < 0)
+ return ret;
+
+ /* disable Fiber auto sensing */
+ ret = ytphy_modify_ext(phydev, YT8521_LINK_TIMER_CFG2_REG,
+ YT8521_LTCR_EN_AUTOSEN, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = ytphy_modify_ext(phydev, YTPHY_MISC_CONFIG_REG,
+ YTPHY_MCR_FIBER_SPEED_MASK, val);
+ if (ret < 0)
+ return ret;
+
+ return ytphy_modify_ext(phydev, YT8521_CHIP_CONFIG_REG,
+ YT8521_CCR_SW_RST, 0);
+}
+
+/**
+ * ytphy_check_and_restart_aneg - Enable and restart auto-negotiation
+ * @phydev: target phy_device struct
+ * @restart: whether aneg restart is requested
+ *
+ * NOTE:The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int ytphy_check_and_restart_aneg(struct phy_device *phydev, bool restart)
+{
+ int ret;
+
+ if (!restart) {
+ /* Advertisement hasn't changed, but maybe aneg was never on to
+ * begin with? Or maybe phy was isolated?
+ */
+ ret = __phy_read(phydev, MII_BMCR);
+ if (ret < 0)
+ return ret;
+
+ if (!(ret & BMCR_ANENABLE) || (ret & BMCR_ISOLATE))
+ restart = true;
+ }
+ /* Enable and Restart Autonegotiation
+ * Don't isolate the PHY if we're negotiating
+ */
+ if (restart)
+ return __phy_modify(phydev, MII_BMCR, BMCR_ISOLATE,
+ BMCR_ANENABLE | BMCR_ANRESTART);
+
+ return 0;
+}
+
+/**
+ * yt8521_fiber_config_aneg - restart auto-negotiation or write
+ * YTPHY_MISC_CONFIG_REG.
+ * @phydev: target phy_device struct
+ *
+ * NOTE:The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_fiber_config_aneg(struct phy_device *phydev)
+{
+ int err, changed = 0;
+ int bmcr;
+ u16 adv;
+
+ if (phydev->autoneg != AUTONEG_ENABLE)
+ return yt8521_fiber_setup_forced(phydev);
+
+ /* enable Fiber auto sensing */
+ err = ytphy_modify_ext(phydev, YT8521_LINK_TIMER_CFG2_REG,
+ 0, YT8521_LTCR_EN_AUTOSEN);
+ if (err < 0)
+ return err;
+
+ err = ytphy_modify_ext(phydev, YT8521_CHIP_CONFIG_REG,
+ YT8521_CCR_SW_RST, 0);
+ if (err < 0)
+ return err;
+
+ bmcr = __phy_read(phydev, MII_BMCR);
+ if (bmcr < 0)
+ return bmcr;
+
+ /* When it is coming from fiber forced mode, add bmcr power down
+ * and power up to let aneg work fine.
+ */
+ if (!(bmcr & BMCR_ANENABLE)) {
+ __phy_modify(phydev, MII_BMCR, 0, BMCR_PDOWN);
+ usleep_range(1000, 1100);
+ __phy_modify(phydev, MII_BMCR, BMCR_PDOWN, 0);
+ }
+
+ adv = linkmode_adv_to_mii_adv_x(phydev->advertising,
+ ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
+
+ /* Setup fiber advertisement */
+ err = __phy_modify_changed(phydev, MII_ADVERTISE,
+ ADVERTISE_1000XHALF | ADVERTISE_1000XFULL |
+ ADVERTISE_1000XPAUSE |
+ ADVERTISE_1000XPSE_ASYM,
+ adv);
+ if (err < 0)
+ return err;
+
+ if (err > 0)
+ changed = 1;
+
+ return ytphy_check_and_restart_aneg(phydev, changed);
+}
+
+/**
+ * ytphy_setup_master_slave
+ * @phydev: target phy_device struct
+ *
+ * NOTE: The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int ytphy_setup_master_slave(struct phy_device *phydev)
+{
+ u16 ctl = 0;
+
+ if (!phydev->is_gigabit_capable)
+ return 0;
+
+ switch (phydev->master_slave_set) {
+ case MASTER_SLAVE_CFG_MASTER_PREFERRED:
+ ctl |= CTL1000_PREFER_MASTER;
+ break;
+ case MASTER_SLAVE_CFG_SLAVE_PREFERRED:
+ break;
+ case MASTER_SLAVE_CFG_MASTER_FORCE:
+ ctl |= CTL1000_AS_MASTER;
+ fallthrough;
+ case MASTER_SLAVE_CFG_SLAVE_FORCE:
+ ctl |= CTL1000_ENABLE_MASTER;
+ break;
+ case MASTER_SLAVE_CFG_UNKNOWN:
+ case MASTER_SLAVE_CFG_UNSUPPORTED:
+ return 0;
+ default:
+ phydev_warn(phydev, "Unsupported Master/Slave mode\n");
+ return -EOPNOTSUPP;
+ }
+
+ return __phy_modify_changed(phydev, MII_CTRL1000,
+ (CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER |
+ CTL1000_PREFER_MASTER), ctl);
+}
+
+/**
+ * ytphy_utp_config_advert - sanitize and advertise auto-negotiation parameters
+ * @phydev: target phy_device struct
+ *
+ * NOTE: Writes MII_ADVERTISE with the appropriate values,
+ * after sanitizing the values to make sure we only advertise
+ * what is supported. Returns < 0 on error, 0 if the PHY's advertisement
+ * hasn't changed, and > 0 if it has changed.
+ * The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int ytphy_utp_config_advert(struct phy_device *phydev)
+{
+ int err, bmsr, changed = 0;
+ u32 adv;
+
+ /* Only allow advertising what this PHY supports */
+ linkmode_and(phydev->advertising, phydev->advertising,
+ phydev->supported);
+
+ adv = linkmode_adv_to_mii_adv_t(phydev->advertising);
+
+ /* Setup standard advertisement */
+ err = __phy_modify_changed(phydev, MII_ADVERTISE,
+ ADVERTISE_ALL | ADVERTISE_100BASE4 |
+ ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM,
+ adv);
+ if (err < 0)
+ return err;
+ if (err > 0)
+ changed = 1;
+
+ bmsr = __phy_read(phydev, MII_BMSR);
+ if (bmsr < 0)
+ return bmsr;
+
+ /* Per 802.3-2008, Section 22.2.4.2.16 Extended status all
+ * 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a
+ * logical 1.
+ */
+ if (!(bmsr & BMSR_ESTATEN))
+ return changed;
+
+ adv = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);
+
+ err = __phy_modify_changed(phydev, MII_CTRL1000,
+ ADVERTISE_1000FULL | ADVERTISE_1000HALF,
+ adv);
+ if (err < 0)
+ return err;
+ if (err > 0)
+ changed = 1;
+
+ return changed;
+}
+
+/**
+ * ytphy_utp_config_aneg - restart auto-negotiation or write BMCR
+ * @phydev: target phy_device struct
+ * @changed: whether autoneg is requested
+ *
+ * NOTE: If auto-negotiation is enabled, we configure the
+ * advertising, and then restart auto-negotiation. If it is not
+ * enabled, then we write the BMCR.
+ * The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int ytphy_utp_config_aneg(struct phy_device *phydev, bool changed)
+{
+ int err;
+ u16 ctl;
+
+ err = ytphy_setup_master_slave(phydev);
+ if (err < 0)
+ return err;
+ else if (err)
+ changed = true;
+
+ if (phydev->autoneg != AUTONEG_ENABLE) {
+ /* configures/forces speed/duplex from @phydev */
+
+ ctl = mii_bmcr_encode_fixed(phydev->speed, phydev->duplex);
+
+ return __phy_modify(phydev, MII_BMCR, ~(BMCR_LOOPBACK |
+ BMCR_ISOLATE | BMCR_PDOWN), ctl);
+ }
+
+ err = ytphy_utp_config_advert(phydev);
+ if (err < 0) /* error */
+ return err;
+ else if (err)
+ changed = true;
+
+ return ytphy_check_and_restart_aneg(phydev, changed);
+}
+
+/**
+ * yt8521_config_aneg_paged() - switch reg space then call genphy_config_aneg
+ * of one page
+ * @phydev: a pointer to a &struct phy_device
+ * @page: The reg page(YT8521_RSSR_FIBER_SPACE/YT8521_RSSR_UTP_SPACE) to
+ * operate.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_config_aneg_paged(struct phy_device *phydev, int page)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(fiber_supported);
+ struct yt8521_priv *priv = phydev->priv;
+ int old_page;
+ int ret = 0;
+
+ page &= YT8521_RSSR_SPACE_MASK;
+
+ old_page = phy_select_page(phydev, page);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ /* If reg_page is YT8521_RSSR_TO_BE_ARBITRATED,
+ * phydev->advertising should be updated.
+ */
+ if (priv->reg_page == YT8521_RSSR_TO_BE_ARBITRATED) {
+ linkmode_zero(fiber_supported);
+ yt8521_prepare_fiber_features(phydev, fiber_supported);
+
+ /* prepare fiber_supported, then setup advertising. */
+ if (page == YT8521_RSSR_FIBER_SPACE) {
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT,
+ fiber_supported);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+ fiber_supported);
+ linkmode_and(phydev->advertising,
+ priv->combo_advertising, fiber_supported);
+ } else {
+ /* ETHTOOL_LINK_MODE_Autoneg_BIT is also used in utp */
+ linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+ fiber_supported);
+ linkmode_andnot(phydev->advertising,
+ priv->combo_advertising,
+ fiber_supported);
+ }
+ }
+
+ if (page == YT8521_RSSR_FIBER_SPACE)
+ ret = yt8521_fiber_config_aneg(phydev);
+ else
+ ret = ytphy_utp_config_aneg(phydev, false);
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8521_config_aneg() - change reg space then call yt8521_config_aneg_paged
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_config_aneg(struct phy_device *phydev)
+{
+ struct yt8521_priv *priv = phydev->priv;
+ int ret;
+
+ if (priv->reg_page != YT8521_RSSR_TO_BE_ARBITRATED) {
+ ret = yt8521_config_aneg_paged(phydev, priv->reg_page);
+ if (ret < 0)
+ return ret;
+ } else {
+ /* If reg_page is YT8521_RSSR_TO_BE_ARBITRATED,
+ * phydev->advertising need to be saved at first run.
+ * Because it contains the advertising which supported by both
+ * mac and yt8521(utp and fiber).
+ */
+ if (linkmode_empty(priv->combo_advertising)) {
+ linkmode_copy(priv->combo_advertising,
+ phydev->advertising);
+ }
+
+ ret = yt8521_config_aneg_paged(phydev, YT8521_RSSR_UTP_SPACE);
+ if (ret < 0)
+ return ret;
+
+ ret = yt8521_config_aneg_paged(phydev, YT8521_RSSR_FIBER_SPACE);
+ if (ret < 0)
+ return ret;
+
+ /* we don't known which will be link, so restore
+ * phydev->advertising as default value.
+ */
+ linkmode_copy(phydev->advertising, priv->combo_advertising);
+ }
+ return 0;
+}
+
+/**
+ * yt8521_aneg_done_paged() - determines the auto negotiation result of one
+ * page.
+ * @phydev: a pointer to a &struct phy_device
+ * @page: The reg page(YT8521_RSSR_FIBER_SPACE/YT8521_RSSR_UTP_SPACE) to
+ * operate.
+ *
+ * returns 0(no link)or 1(fiber or utp link) or negative errno code
+ */
+static int yt8521_aneg_done_paged(struct phy_device *phydev, int page)
+{
+ int old_page;
+ int ret = 0;
+ int link;
+
+ old_page = phy_select_page(phydev, page & YT8521_RSSR_SPACE_MASK);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ ret = __phy_read(phydev, YTPHY_SPECIFIC_STATUS_REG);
+ if (ret < 0)
+ goto err_restore_page;
+
+ link = !!(ret & YTPHY_SSR_LINK);
+ ret = link;
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8521_aneg_done() - determines the auto negotiation result
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0(no link)or 1(fiber or utp link) or negative errno code
+ */
+static int yt8521_aneg_done(struct phy_device *phydev)
+{
+ struct yt8521_priv *priv = phydev->priv;
+ int link_fiber = 0;
+ int link_utp;
+ int link;
+
+ if (priv->reg_page != YT8521_RSSR_TO_BE_ARBITRATED) {
+ link = yt8521_aneg_done_paged(phydev, priv->reg_page);
+ } else {
+ link_utp = yt8521_aneg_done_paged(phydev,
+ YT8521_RSSR_UTP_SPACE);
+ if (link_utp < 0)
+ return link_utp;
+
+ if (!link_utp) {
+ link_fiber = yt8521_aneg_done_paged(phydev,
+ YT8521_RSSR_FIBER_SPACE);
+ if (link_fiber < 0)
+ return link_fiber;
+ }
+ link = link_fiber || link_utp;
+ phydev_info(phydev, "%s, link_fiber: %d, link_utp: %d\n",
+ __func__, link_fiber, link_utp);
+ }
+
+ return link;
+}
+
+/**
+ * ytphy_utp_read_abilities - read PHY abilities from Clause 22 registers
+ * @phydev: target phy_device struct
+ *
+ * NOTE: Reads the PHY's abilities and populates
+ * phydev->supported accordingly.
+ * The caller must have taken the MDIO bus lock.
+ *
+ * returns 0 or negative errno code
+ */
+static int ytphy_utp_read_abilities(struct phy_device *phydev)
+{
+ int val;
+
+ linkmode_set_bit_array(phy_basic_ports_array,
+ ARRAY_SIZE(phy_basic_ports_array),
+ phydev->supported);
+
+ val = __phy_read(phydev, MII_BMSR);
+ if (val < 0)
+ return val;
+
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported,
+ val & BMSR_ANEGCAPABLE);
+
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, phydev->supported,
+ val & BMSR_100FULL);
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, phydev->supported,
+ val & BMSR_100HALF);
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, phydev->supported,
+ val & BMSR_10FULL);
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, phydev->supported,
+ val & BMSR_10HALF);
+
+ if (val & BMSR_ESTATEN) {
+ val = __phy_read(phydev, MII_ESTATUS);
+ if (val < 0)
+ return val;
+
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
+ phydev->supported, val & ESTATUS_1000_TFULL);
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
+ phydev->supported, val & ESTATUS_1000_THALF);
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
+ phydev->supported, val & ESTATUS_1000_XFULL);
+ }
+
+ return 0;
+}
+
+/**
+ * yt8521_get_features_paged() - read supported link modes for one page
+ * @phydev: a pointer to a &struct phy_device
+ * @page: The reg page(YT8521_RSSR_FIBER_SPACE/YT8521_RSSR_UTP_SPACE) to
+ * operate.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_get_features_paged(struct phy_device *phydev, int page)
+{
+ int old_page;
+ int ret = 0;
+
+ page &= YT8521_RSSR_SPACE_MASK;
+ old_page = phy_select_page(phydev, page);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ if (page == YT8521_RSSR_FIBER_SPACE) {
+ linkmode_zero(phydev->supported);
+ yt8521_prepare_fiber_features(phydev, phydev->supported);
+ } else {
+ ret = ytphy_utp_read_abilities(phydev);
+ if (ret < 0)
+ goto err_restore_page;
+ }
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8521_get_features - switch reg space then call yt8521_get_features_paged
+ * @phydev: target phy_device struct
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8521_get_features(struct phy_device *phydev)
+{
+ struct yt8521_priv *priv = phydev->priv;
+ int ret;
+
+ if (priv->reg_page != YT8521_RSSR_TO_BE_ARBITRATED) {
+ ret = yt8521_get_features_paged(phydev, priv->reg_page);
+ } else {
+ ret = yt8521_get_features_paged(phydev,
+ YT8521_RSSR_UTP_SPACE);
+ if (ret < 0)
+ return ret;
+
+ /* add fiber's features to phydev->supported */
+ yt8521_prepare_fiber_features(phydev, phydev->supported);
+ }
+ return ret;
+}
+
static struct phy_driver motorcomm_phy_drvs[] = {
{
PHY_ID_MATCH_EXACT(PHY_ID_YT8511),
.read_page = yt8511_read_page,
.write_page = yt8511_write_page,
},
+ {
+ PHY_ID_MATCH_EXACT(PHY_ID_YT8521),
+ .name = "YT8521 Gigabit Ethernet",
+ .get_features = yt8521_get_features,
+ .probe = yt8521_probe,
+ .read_page = yt8521_read_page,
+ .write_page = yt8521_write_page,
+ .get_wol = ytphy_get_wol,
+ .set_wol = ytphy_set_wol,
+ .config_aneg = yt8521_config_aneg,
+ .aneg_done = yt8521_aneg_done,
+ .config_init = yt8521_config_init,
+ .read_status = yt8521_read_status,
+ .soft_reset = yt8521_soft_reset,
+ .suspend = yt8521_suspend,
+ .resume = yt8521_resume,
+ },
};
module_phy_driver(motorcomm_phy_drvs);
-MODULE_DESCRIPTION("Motorcomm PHY driver");
+MODULE_DESCRIPTION("Motorcomm 8511/8521 PHY driver");
MODULE_AUTHOR("Peter Geis");
+MODULE_AUTHOR("Frank");
MODULE_LICENSE("GPL");
static const struct mdio_device_id __maybe_unused motorcomm_tbl[] = {
{ PHY_ID_MATCH_EXACT(PHY_ID_YT8511) },
+ { PHY_ID_MATCH_EXACT(PHY_ID_YT8521) },
{ /* sentinal */ }
};
projects / platform / kernel / linux-starfive.git / blobdiff