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android-kvm / linux / 5a92938309829cce26c03f62d908ae85209a52b3 / . / drivers / net / phy / motorcomm.c
blob: 685190db72deb4fc8679f3d2f111ebacfc91e1e2 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0+
/*
* Motorcomm 8511/8521/8531S 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
#define PHY_ID_YT8531S 0x4F51E91A
/* YT8521/YT8531S 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_EXT_CLK_GATE 0x0c
#define YT8511_EXT_DELAY_DRIVE 0x0d
#define YT8511_EXT_SLEEP_CTRL 0x27
/* 2b00 25m from pll
* 2b01 25m from xtl *default*
* 2b10 62.m from pll
* 2b11 125m from pll
*/
#define YT8511_CLK_125M (BIT(2) | BIT(1))
#define YT8511_PLLON_SLP BIT(14)
/* RX Delay enabled = 1.8ns 1000T, 8ns 10/100T */
#define YT8511_DELAY_RX BIT(0)
/* TX Gig-E Delay is bits 7:4, default 0x5
* TX Fast-E Delay is bits 15:12, default 0xf
* Delay = 150ps * N - 250ps
* On = 2000ps, off = 50ps
*/
#define YT8511_DELAY_GE_TX_EN (0xf << 4)
#define YT8511_DELAY_GE_TX_DIS (0x2 << 4)
#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, 0xA006 ~ 0xA00A and 0xA012 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)
#define YT8531S_SYNCE_CFG_REG 0xA012
#define YT8531S_SCR_SYNCE_ENABLE BIT(6)
/* 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);
};
static int yt8511_write_page(struct phy_device *phydev, int page)
{
return __phy_write(phydev, YT8511_PAGE_SELECT, page);
};
static int yt8511_config_init(struct phy_device *phydev)
{
int oldpage, ret = 0;
unsigned int ge, fe;
oldpage = phy_select_page(phydev, YT8511_EXT_CLK_GATE);
if (oldpage < 0)
goto err_restore_page;
/* set rgmii delay mode */
switch (phydev->interface) {
case PHY_INTERFACE_MODE_RGMII:
ge = YT8511_DELAY_GE_TX_DIS;
fe = YT8511_DELAY_FE_TX_DIS;
break;
case PHY_INTERFACE_MODE_RGMII_RXID:
ge = YT8511_DELAY_RX | YT8511_DELAY_GE_TX_DIS;
fe = YT8511_DELAY_FE_TX_DIS;
break;
case PHY_INTERFACE_MODE_RGMII_TXID:
ge = YT8511_DELAY_GE_TX_EN;
fe = YT8511_DELAY_FE_TX_EN;
break;
case PHY_INTERFACE_MODE_RGMII_ID:
ge = YT8511_DELAY_RX | YT8511_DELAY_GE_TX_EN;
fe = YT8511_DELAY_FE_TX_EN;
break;
default: /* do not support other modes */
ret = -EOPNOTSUPP;
goto err_restore_page;
}
ret = __phy_modify(phydev, YT8511_PAGE, (YT8511_DELAY_RX | YT8511_DELAY_GE_TX_EN), ge);
if (ret < 0)
goto err_restore_page;
/* set clock mode to 125mhz */
ret = __phy_modify(phydev, YT8511_PAGE, 0, YT8511_CLK_125M);
if (ret < 0)
goto err_restore_page;
/* fast ethernet delay is in a separate page */
ret = __phy_write(phydev, YT8511_PAGE_SELECT, YT8511_EXT_DELAY_DRIVE);
if (ret < 0)
goto err_restore_page;
ret = __phy_modify(phydev, YT8511_PAGE, YT8511_DELAY_FE_TX_EN, fe);
if (ret < 0)
goto err_restore_page;
/* leave pll enabled in sleep */
ret = __phy_write(phydev, YT8511_PAGE_SELECT, YT8511_EXT_SLEEP_CTRL);
if (ret < 0)
goto err_restore_page;
ret = __phy_modify(phydev, YT8511_PAGE, 0, YT8511_PLLON_SLP);
if (ret < 0)
goto err_restore_page;
err_restore_page:
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;
}
/**
* yt8531s_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 yt8531s_probe(struct phy_device *phydev)
{
int ret;
/* Disable SyncE clock output by default */
ret = ytphy_modify_ext_with_lock(phydev, YT8531S_SYNCE_CFG_REG,
YT8531S_SCR_SYNCE_ENABLE, 0);
if (ret < 0)
return ret;
/* same as yt8521_probe */
return yt8521_probe(phydev);
}
/**
* 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_FE_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_FE_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_FE_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_FE_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),
.name = "YT8511 Gigabit Ethernet",
.config_init = yt8511_config_init,
.suspend = genphy_suspend,
.resume = genphy_resume,
.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,
},
{
PHY_ID_MATCH_EXACT(PHY_ID_YT8531S),
.name = "YT8531S Gigabit Ethernet",
.get_features = yt8521_get_features,
.probe = yt8531s_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 8511/8521/8531S 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) },
{ PHY_ID_MATCH_EXACT(PHY_ID_YT8531S) },
{ /* sentinal */ }
};
MODULE_DEVICE_TABLE(mdio, motorcomm_tbl);