diff options
Diffstat (limited to 'drivers/net/phy/broadcom.c')
-rw-r--r-- | drivers/net/phy/broadcom.c | 208 |
1 files changed, 144 insertions, 64 deletions
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c index f81e5322223..f63c96a4ecb 100644 --- a/drivers/net/phy/broadcom.c +++ b/drivers/net/phy/broadcom.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <linux/phy.h> +#include <linux/brcmphy.h> #define PHY_ID_BCM50610 0x0143bd60 #define PHY_ID_BCM50610M 0x0143bd70 @@ -24,6 +25,9 @@ #define BRCM_PHY_MODEL(phydev) \ ((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask) +#define BRCM_PHY_REV(phydev) \ + ((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask)) + #define MII_BCM54XX_ECR 0x10 /* BCM54xx extended control register */ #define MII_BCM54XX_ECR_IM 0x1000 /* Interrupt mask */ @@ -94,22 +98,35 @@ #define BCM_LED_SRC_OFF 0xe /* Tied high */ #define BCM_LED_SRC_ON 0xf /* Tied low */ + /* * BCM5482: Shadow registers * Shadow values go into bits [14:10] of register 0x1c to select a shadow * register to access. */ +/* 00101: Spare Control Register 3 */ +#define BCM54XX_SHD_SCR3 0x05 +#define BCM54XX_SHD_SCR3_DEF_CLK125 0x0001 +#define BCM54XX_SHD_SCR3_DLLAPD_DIS 0x0002 +#define BCM54XX_SHD_SCR3_TRDDAPD 0x0004 + +/* 01010: Auto Power-Down */ +#define BCM54XX_SHD_APD 0x0a +#define BCM54XX_SHD_APD_EN 0x0020 + #define BCM5482_SHD_LEDS1 0x0d /* 01101: LED Selector 1 */ /* LED3 / ~LINKSPD[2] selector */ #define BCM5482_SHD_LEDS1_LED3(src) ((src & 0xf) << 4) /* LED1 / ~LINKSPD[1] selector */ #define BCM5482_SHD_LEDS1_LED1(src) ((src & 0xf) << 0) +#define BCM54XX_SHD_RGMII_MODE 0x0b /* 01011: RGMII Mode Selector */ #define BCM5482_SHD_SSD 0x14 /* 10100: Secondary SerDes control */ #define BCM5482_SHD_SSD_LEDM 0x0008 /* SSD LED Mode enable */ #define BCM5482_SHD_SSD_EN 0x0001 /* SSD enable */ #define BCM5482_SHD_MODE 0x1f /* 11111: Mode Control Register */ #define BCM5482_SHD_MODE_1000BX 0x0001 /* Enable 1000BASE-X registers */ + /* * EXPANSION SHADOW ACCESS REGISTERS. (PHY REG 0x15, 0x16, and 0x17) */ @@ -138,16 +155,6 @@ #define BCM5482_SSD_SGMII_SLAVE_EN 0x0002 /* Slave mode enable */ #define BCM5482_SSD_SGMII_SLAVE_AD 0x0001 /* Slave auto-detection */ -/* - * Device flags for PHYs that can be configured for different operating - * modes. - */ -#define PHY_BCM_FLAGS_VALID 0x80000000 -#define PHY_BCM_FLAGS_INTF_XAUI 0x00000020 -#define PHY_BCM_FLAGS_INTF_SGMII 0x00000010 -#define PHY_BCM_FLAGS_MODE_1000BX 0x00000002 -#define PHY_BCM_FLAGS_MODE_COPPER 0x00000001 - /*****************************************************************************/ /* Fast Ethernet Transceiver definitions. */ @@ -237,53 +244,145 @@ static int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val) return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val); } +/* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */ static int bcm50610_a0_workaround(struct phy_device *phydev) { int err; - err = bcm54xx_auxctl_write(phydev, - MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, - MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA | - MII_BCM54XX_AUXCTL_ACTL_TX_6DB); - if (err < 0) - return err; - - err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP08, - MII_BCM54XX_EXP_EXP08_RJCT_2MHZ | - MII_BCM54XX_EXP_EXP08_EARLY_DAC_WAKE); - if (err < 0) - goto error; - err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_AADJ1CH0, MII_BCM54XX_EXP_AADJ1CH0_SWP_ABCD_OEN | MII_BCM54XX_EXP_AADJ1CH0_SWSEL_THPF); if (err < 0) - goto error; + return err; err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_AADJ1CH3, MII_BCM54XX_EXP_AADJ1CH3_ADCCKADJ); if (err < 0) - goto error; + return err; err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP75, MII_BCM54XX_EXP_EXP75_VDACCTRL); if (err < 0) - goto error; + return err; err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP96, MII_BCM54XX_EXP_EXP96_MYST); if (err < 0) - goto error; + return err; err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP97, MII_BCM54XX_EXP_EXP97_MYST); + return err; +} + +static int bcm54xx_phydsp_config(struct phy_device *phydev) +{ + int err, err2; + + /* Enable the SMDSP clock */ + err = bcm54xx_auxctl_write(phydev, + MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, + MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA | + MII_BCM54XX_AUXCTL_ACTL_TX_6DB); + if (err < 0) + return err; + + if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 || + BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) { + /* Clear bit 9 to fix a phy interop issue. */ + err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP08, + MII_BCM54XX_EXP_EXP08_RJCT_2MHZ); + if (err < 0) + goto error; + + if (phydev->drv->phy_id == PHY_ID_BCM50610) { + err = bcm50610_a0_workaround(phydev); + if (err < 0) + goto error; + } + } + + if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) { + int val; + + val = bcm54xx_exp_read(phydev, MII_BCM54XX_EXP_EXP75); + if (val < 0) + goto error; + + val |= MII_BCM54XX_EXP_EXP75_CM_OSC; + err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP75, val); + } + error: - bcm54xx_auxctl_write(phydev, - MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, - MII_BCM54XX_AUXCTL_ACTL_TX_6DB); + /* Disable the SMDSP clock */ + err2 = bcm54xx_auxctl_write(phydev, + MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, + MII_BCM54XX_AUXCTL_ACTL_TX_6DB); - return err; + /* Return the first error reported. */ + return err ? err : err2; +} + +static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev) +{ + u32 val, orig; + bool clk125en = true; + + /* Abort if we are using an untested phy. */ + if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 || + BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 || + BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M) + return; + + val = bcm54xx_shadow_read(phydev, BCM54XX_SHD_SCR3); + if (val < 0) + return; + + orig = val; + + if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 || + BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) && + BRCM_PHY_REV(phydev) >= 0x3) { + /* + * Here, bit 0 _disables_ CLK125 when set. + * This bit is set by default. + */ + clk125en = false; + } else { + if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) { + /* Here, bit 0 _enables_ CLK125 when set */ + val &= ~BCM54XX_SHD_SCR3_DEF_CLK125; + clk125en = false; + } + } + + if (clk125en == false || + (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE)) + val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS; + else + val |= BCM54XX_SHD_SCR3_DLLAPD_DIS; + + if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) + val |= BCM54XX_SHD_SCR3_TRDDAPD; + + if (orig != val) + bcm54xx_shadow_write(phydev, BCM54XX_SHD_SCR3, val); + + val = bcm54xx_shadow_read(phydev, BCM54XX_SHD_APD); + if (val < 0) + return; + + orig = val; + + if (clk125en == false || + (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE)) + val |= BCM54XX_SHD_APD_EN; + else + val &= ~BCM54XX_SHD_APD_EN; + + if (orig != val) + bcm54xx_shadow_write(phydev, BCM54XX_SHD_APD, val); } static int bcm54xx_config_init(struct phy_device *phydev) @@ -308,38 +407,17 @@ static int bcm54xx_config_init(struct phy_device *phydev) if (err < 0) return err; - if (phydev->drv->phy_id == PHY_ID_BCM50610) { - err = bcm50610_a0_workaround(phydev); - if (err < 0) - return err; - } - - if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) { - int err2; - - err = bcm54xx_auxctl_write(phydev, - MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, - MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA | - MII_BCM54XX_AUXCTL_ACTL_TX_6DB); - if (err < 0) - return err; - - reg = bcm54xx_exp_read(phydev, MII_BCM54XX_EXP_EXP75); - if (reg < 0) - goto error; + if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 || + BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) && + (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE)) + bcm54xx_shadow_write(phydev, BCM54XX_SHD_RGMII_MODE, 0); - reg |= MII_BCM54XX_EXP_EXP75_CM_OSC; - err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP75, reg); + if ((phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) || + (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) || + (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE)) + bcm54xx_adjust_rxrefclk(phydev); -error: - err2 = bcm54xx_auxctl_write(phydev, - MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, - MII_BCM54XX_AUXCTL_ACTL_TX_6DB); - if (err) - return err; - if (err2) - return err2; - } + bcm54xx_phydsp_config(phydev); return 0; } @@ -564,9 +642,11 @@ static int brcm_fet_config_init(struct phy_device *phydev) if (err < 0) goto done; - /* Enable auto power down */ - err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2, - MII_BRCM_FET_SHDW_AS2_APDE); + if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) { + /* Enable auto power down */ + err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2, + MII_BRCM_FET_SHDW_AS2_APDE); + } done: /* Disable shadow register access */ |