diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/phy/nxp-tja11xx.c | 106 |
1 files changed, 105 insertions, 1 deletions
diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c index ca5f9d4dc57e..8b743d25002b 100644 --- a/drivers/net/phy/nxp-tja11xx.c +++ b/drivers/net/phy/nxp-tja11xx.c @@ -5,6 +5,7 @@ */ #include <linux/delay.h> #include <linux/ethtool.h> +#include <linux/ethtool_netlink.h> #include <linux/kernel.h> #include <linux/mdio.h> #include <linux/mii.h> @@ -26,6 +27,7 @@ #define MII_ECTRL_POWER_MODE_NO_CHANGE (0x0 << 11) #define MII_ECTRL_POWER_MODE_NORMAL (0x3 << 11) #define MII_ECTRL_POWER_MODE_STANDBY (0xc << 11) +#define MII_ECTRL_CABLE_TEST BIT(5) #define MII_ECTRL_CONFIG_EN BIT(2) #define MII_ECTRL_WAKE_REQUEST BIT(0) @@ -55,6 +57,11 @@ #define MII_GENSTAT 24 #define MII_GENSTAT_PLL_LOCKED BIT(14) +#define MII_EXTSTAT 25 +#define MII_EXTSTAT_SHORT_DETECT BIT(8) +#define MII_EXTSTAT_OPEN_DETECT BIT(7) +#define MII_EXTSTAT_POLARITY_DETECT BIT(6) + #define MII_COMMCFG 27 #define MII_COMMCFG_AUTO_OP BIT(15) @@ -111,6 +118,11 @@ static int tja11xx_enable_link_control(struct phy_device *phydev) return phy_set_bits(phydev, MII_ECTRL, MII_ECTRL_LINK_CONTROL); } +static int tja11xx_disable_link_control(struct phy_device *phydev) +{ + return phy_clear_bits(phydev, MII_ECTRL, MII_ECTRL_LINK_CONTROL); +} + static int tja11xx_wakeup(struct phy_device *phydev) { int ret; @@ -536,6 +548,93 @@ static int tja11xx_config_intr(struct phy_device *phydev) return phy_write(phydev, MII_INTEN, value); } +static int tja11xx_cable_test_start(struct phy_device *phydev) +{ + int ret; + + ret = phy_clear_bits(phydev, MII_COMMCFG, MII_COMMCFG_AUTO_OP); + if (ret) + return ret; + + ret = tja11xx_wakeup(phydev); + if (ret < 0) + return ret; + + ret = tja11xx_disable_link_control(phydev); + if (ret < 0) + return ret; + + return phy_set_bits(phydev, MII_ECTRL, MII_ECTRL_CABLE_TEST); +} + +/* + * | BI_DA+ | BI_DA- | Result + * | open | open | open + * | + short to - | - short to + | short + * | short to Vdd | open | open + * | open | shot to Vdd | open + * | short to Vdd | short to Vdd | short + * | shot to GND | open | open + * | open | shot to GND | open + * | short to GND | shot to GND | short + * | connected to active link partner (master) | shot and open + */ +static int tja11xx_cable_test_report_trans(u32 result) +{ + u32 mask = MII_EXTSTAT_SHORT_DETECT | MII_EXTSTAT_OPEN_DETECT; + + if ((result & mask) == mask) { + /* connected to active link partner (master) */ + return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC; + } else if ((result & mask) == 0) { + return ETHTOOL_A_CABLE_RESULT_CODE_OK; + } else if (result & MII_EXTSTAT_SHORT_DETECT) { + return ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT; + } else if (result & MII_EXTSTAT_OPEN_DETECT) { + return ETHTOOL_A_CABLE_RESULT_CODE_OPEN; + } else { + return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC; + } +} + +static int tja11xx_cable_test_report(struct phy_device *phydev) +{ + int ret; + + ret = phy_read(phydev, MII_EXTSTAT); + if (ret < 0) + return ret; + + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_A, + tja11xx_cable_test_report_trans(ret)); + + return 0; +} + +static int tja11xx_cable_test_get_status(struct phy_device *phydev, + bool *finished) +{ + int ret; + + *finished = false; + + ret = phy_read(phydev, MII_ECTRL); + if (ret < 0) + return ret; + + if (!(ret & MII_ECTRL_CABLE_TEST)) { + *finished = true; + + ret = phy_set_bits(phydev, MII_COMMCFG, MII_COMMCFG_AUTO_OP); + if (ret) + return ret; + + return tja11xx_cable_test_report(phydev); + } + + return 0; +} + static struct phy_driver tja11xx_driver[] = { { PHY_ID_MATCH_MODEL(PHY_ID_TJA1100), @@ -572,6 +671,7 @@ static struct phy_driver tja11xx_driver[] = { }, { .name = "NXP TJA1102 Port 0", .features = PHY_BASIC_T1_FEATURES, + .flags = PHY_POLL_CABLE_TEST, .probe = tja1102_p0_probe, .soft_reset = tja11xx_soft_reset, .config_aneg = tja11xx_config_aneg, @@ -587,10 +687,12 @@ static struct phy_driver tja11xx_driver[] = { .get_stats = tja11xx_get_stats, .ack_interrupt = tja11xx_ack_interrupt, .config_intr = tja11xx_config_intr, - + .cable_test_start = tja11xx_cable_test_start, + .cable_test_get_status = tja11xx_cable_test_get_status, }, { .name = "NXP TJA1102 Port 1", .features = PHY_BASIC_T1_FEATURES, + .flags = PHY_POLL_CABLE_TEST, /* currently no probe for Port 1 is need */ .soft_reset = tja11xx_soft_reset, .config_aneg = tja11xx_config_aneg, @@ -606,6 +708,8 @@ static struct phy_driver tja11xx_driver[] = { .get_stats = tja11xx_get_stats, .ack_interrupt = tja11xx_ack_interrupt, .config_intr = tja11xx_config_intr, + .cable_test_start = tja11xx_cable_test_start, + .cable_test_get_status = tja11xx_cable_test_get_status, } }; |