diff options
author | Russell King <rmk+kernel@armlinux.org.uk> | 2018-01-02 13:58:58 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2018-01-03 19:00:23 +0300 |
commit | fea23fb591cce99546baca043d2a068228e87a79 (patch) | |
tree | 9144b3005e8ca0fe15e047c50dcabb0b8051f9a1 /drivers | |
parent | 2b74e5be17d25fbca4be236a19efcd2ecae81cb2 (diff) | |
download | linux-fea23fb591cce99546baca043d2a068228e87a79.tar.xz |
net: phy: convert read-modify-write to phy_modify()
Convert read-modify-write sequences in at803x, Marvell and core phylib
to use phy_modify() to ensure safety.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/phy/at803x.c | 20 | ||||
-rw-r--r-- | drivers/net/phy/marvell.c | 88 | ||||
-rw-r--r-- | drivers/net/phy/phy_device.c | 50 |
3 files changed, 46 insertions, 112 deletions
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 1e190f3bca63..c2715908d43e 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -215,34 +215,22 @@ static int at803x_suspend(struct phy_device *phydev) int value; int wol_enabled; - mutex_lock(&phydev->lock); - value = phy_read(phydev, AT803X_INTR_ENABLE); wol_enabled = value & AT803X_INTR_ENABLE_WOL; - value = phy_read(phydev, MII_BMCR); - if (wol_enabled) - value |= BMCR_ISOLATE; + value = BMCR_ISOLATE; else - value |= BMCR_PDOWN; + value = BMCR_PDOWN; - phy_write(phydev, MII_BMCR, value); - - mutex_unlock(&phydev->lock); + phy_modify(phydev, MII_BMCR, 0, value); return 0; } static int at803x_resume(struct phy_device *phydev) { - int value; - - value = phy_read(phydev, MII_BMCR); - value &= ~(BMCR_PDOWN | BMCR_ISOLATE); - phy_write(phydev, MII_BMCR, value); - - return 0; + return phy_modify(phydev, MII_BMCR, ~(BMCR_PDOWN | BMCR_ISOLATE), 0); } static int at803x_probe(struct phy_device *phydev) diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index ac39d909d07a..2bd38962b5d2 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -471,7 +471,7 @@ static int m88e1121_config_aneg(struct phy_device *phydev) if (phy_interface_is_rgmii(phydev)) { err = m88e1121_config_aneg_rgmii_delays(phydev); - if (err) + if (err < 0) return err; } @@ -664,19 +664,14 @@ static int m88e1116r_config_init(struct phy_device *phydev) static int m88e3016_config_init(struct phy_device *phydev) { - int reg; + int ret; /* Enable Scrambler and Auto-Crossover */ - reg = phy_read(phydev, MII_88E3016_PHY_SPEC_CTRL); - if (reg < 0) - return reg; - - reg &= ~MII_88E3016_DISABLE_SCRAMBLER; - reg |= MII_88E3016_AUTO_MDIX_CROSSOVER; - - reg = phy_write(phydev, MII_88E3016_PHY_SPEC_CTRL, reg); - if (reg < 0) - return reg; + ret = phy_modify(phydev, MII_88E3016_PHY_SPEC_CTRL, + ~MII_88E3016_DISABLE_SCRAMBLER, + MII_88E3016_AUTO_MDIX_CROSSOVER); + if (ret < 0) + return ret; return marvell_config_init(phydev); } @@ -685,42 +680,34 @@ static int m88e1111_config_init_hwcfg_mode(struct phy_device *phydev, u16 mode, int fibre_copper_auto) { - int temp; - - temp = phy_read(phydev, MII_M1111_PHY_EXT_SR); - if (temp < 0) - return temp; - - temp &= ~(MII_M1111_HWCFG_MODE_MASK | - MII_M1111_HWCFG_FIBER_COPPER_AUTO | - MII_M1111_HWCFG_FIBER_COPPER_RES); - temp |= mode; - if (fibre_copper_auto) - temp |= MII_M1111_HWCFG_FIBER_COPPER_AUTO; + mode |= MII_M1111_HWCFG_FIBER_COPPER_AUTO; - return phy_write(phydev, MII_M1111_PHY_EXT_SR, temp); + return phy_modify(phydev, MII_M1111_PHY_EXT_SR, + (u16)~(MII_M1111_HWCFG_MODE_MASK | + MII_M1111_HWCFG_FIBER_COPPER_AUTO | + MII_M1111_HWCFG_FIBER_COPPER_RES), + mode); } static int m88e1111_config_init_rgmii_delays(struct phy_device *phydev) { - int temp; - - temp = phy_read(phydev, MII_M1111_PHY_EXT_CR); - if (temp < 0) - return temp; + int delay; if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) { - temp |= (MII_M1111_RGMII_RX_DELAY | MII_M1111_RGMII_TX_DELAY); + delay = MII_M1111_RGMII_RX_DELAY | MII_M1111_RGMII_TX_DELAY; } else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) { - temp &= ~MII_M1111_RGMII_TX_DELAY; - temp |= MII_M1111_RGMII_RX_DELAY; + delay = MII_M1111_RGMII_RX_DELAY; } else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) { - temp &= ~MII_M1111_RGMII_RX_DELAY; - temp |= MII_M1111_RGMII_TX_DELAY; + delay = MII_M1111_RGMII_TX_DELAY; + } else { + delay = 0; } - return phy_write(phydev, MII_M1111_PHY_EXT_CR, temp); + return phy_modify(phydev, MII_M1111_PHY_EXT_CR, + (u16)~(MII_M1111_RGMII_RX_DELAY | + MII_M1111_RGMII_TX_DELAY), + delay); } static int m88e1111_config_init_rgmii(struct phy_device *phydev) @@ -766,7 +753,7 @@ static int m88e1111_config_init_rtbi(struct phy_device *phydev) int err; err = m88e1111_config_init_rgmii_delays(phydev); - if (err) + if (err < 0) return err; err = m88e1111_config_init_hwcfg_mode( @@ -793,7 +780,7 @@ static int m88e1111_config_init(struct phy_device *phydev) if (phy_interface_is_rgmii(phydev)) { err = m88e1111_config_init_rgmii(phydev); - if (err) + if (err < 0) return err; } @@ -834,7 +821,6 @@ static int m88e1121_config_init(struct phy_device *phydev) static int m88e1510_config_init(struct phy_device *phydev) { int err; - int temp; /* SGMII-to-Copper mode initialization */ if (phydev->interface == PHY_INTERFACE_MODE_SGMII) { @@ -846,16 +832,15 @@ static int m88e1510_config_init(struct phy_device *phydev) return err; /* In reg 20, write MODE[2:0] = 0x1 (SGMII to Copper) */ - temp = phy_read(phydev, MII_88E1510_GEN_CTRL_REG_1); - temp &= ~MII_88E1510_GEN_CTRL_REG_1_MODE_MASK; - temp |= MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII; - err = phy_write(phydev, MII_88E1510_GEN_CTRL_REG_1, temp); + err = phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1, + ~MII_88E1510_GEN_CTRL_REG_1_MODE_MASK, + MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII); if (err < 0) return err; /* PHY reset is necessary after changing MODE[2:0] */ - temp |= MII_88E1510_GEN_CTRL_REG_1_RESET; - err = phy_write(phydev, MII_88E1510_GEN_CTRL_REG_1, temp); + err = phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1, 0, + MII_88E1510_GEN_CTRL_REG_1_RESET); if (err < 0) return err; @@ -961,7 +946,6 @@ static int m88e1149_config_init(struct phy_device *phydev) static int m88e1145_config_init_rgmii(struct phy_device *phydev) { - int temp; int err; err = m88e1111_config_init_rgmii_delays(phydev); @@ -973,15 +957,9 @@ static int m88e1145_config_init_rgmii(struct phy_device *phydev) if (err < 0) return err; - temp = phy_read(phydev, 0x1e); - if (temp < 0) - return temp; - - temp &= 0xf03f; - temp |= 2 << 9; /* 36 ohm */ - temp |= 2 << 6; /* 39 ohm */ - - err = phy_write(phydev, 0x1e, temp); + err = phy_modify(phydev, 0x1e, 0xf03f, + 2 << 9 | /* 36 ohm */ + 2 << 6); /* 39 ohm */ if (err < 0) return err; diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index be13b5d6a8bf..2c5b2e041c0f 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1368,9 +1368,8 @@ static int genphy_config_eee_advert(struct phy_device *phydev) */ int genphy_setup_forced(struct phy_device *phydev) { - int ctl = phy_read(phydev, MII_BMCR); + u16 ctl = 0; - ctl &= BMCR_LOOPBACK | BMCR_ISOLATE | BMCR_PDOWN; phydev->pause = 0; phydev->asym_pause = 0; @@ -1382,7 +1381,8 @@ int genphy_setup_forced(struct phy_device *phydev) if (DUPLEX_FULL == phydev->duplex) ctl |= BMCR_FULLDPLX; - return phy_write(phydev, MII_BMCR, ctl); + return phy_modify(phydev, MII_BMCR, + BMCR_LOOPBACK | BMCR_ISOLATE | BMCR_PDOWN, ctl); } EXPORT_SYMBOL(genphy_setup_forced); @@ -1392,17 +1392,9 @@ EXPORT_SYMBOL(genphy_setup_forced); */ int genphy_restart_aneg(struct phy_device *phydev) { - int ctl = phy_read(phydev, MII_BMCR); - - if (ctl < 0) - return ctl; - - ctl |= BMCR_ANENABLE | BMCR_ANRESTART; - /* Don't isolate the PHY if we're negotiating */ - ctl &= ~BMCR_ISOLATE; - - return phy_write(phydev, MII_BMCR, ctl); + return phy_modify(phydev, MII_BMCR, ~BMCR_ISOLATE, + BMCR_ANENABLE | BMCR_ANRESTART); } EXPORT_SYMBOL(genphy_restart_aneg); @@ -1668,44 +1660,20 @@ EXPORT_SYMBOL(genphy_config_init); int genphy_suspend(struct phy_device *phydev) { - int value; - - mutex_lock(&phydev->lock); - - value = phy_read(phydev, MII_BMCR); - phy_write(phydev, MII_BMCR, value | BMCR_PDOWN); - - mutex_unlock(&phydev->lock); - - return 0; + return phy_modify(phydev, MII_BMCR, 0, BMCR_PDOWN); } EXPORT_SYMBOL(genphy_suspend); int genphy_resume(struct phy_device *phydev) { - int value; - - value = phy_read(phydev, MII_BMCR); - phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN); - - return 0; + return phy_modify(phydev, MII_BMCR, ~BMCR_PDOWN, 0); } EXPORT_SYMBOL(genphy_resume); int genphy_loopback(struct phy_device *phydev, bool enable) { - int value; - - value = phy_read(phydev, MII_BMCR); - if (value < 0) - return value; - - if (enable) - value |= BMCR_LOOPBACK; - else - value &= ~BMCR_LOOPBACK; - - return phy_write(phydev, MII_BMCR, value); + return phy_modify(phydev, MII_BMCR, ~BMCR_LOOPBACK, + enable ? BMCR_LOOPBACK : 0); } EXPORT_SYMBOL(genphy_loopback); |