openwrt/em-br6478acv2/master-187ad058 - openwrt master 187ad058

	Commit message (Expand)	Author	Age	Files	Lines
*	[kernel] make all 3.6 patches apply and build	Florian Fainelli	2012-10-24	1	-7/+7
*	[generic]: linux 3.6 support (work in progress)	Imre Kaloz	2012-10-23	1	-0/+145

From 924453aa9d2324e5611f8e2b71df746d8f0c79f1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20van=20Dorst?= <opensource@vdorst.com> Date: Fri, 13 Nov 2020 16:11:32 +0100 Subject: [PATCH] net: phy: at803x: add support for SFP module in RGMII-to-x-base mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: René van Dorst <opensource@vdorst.com> --- drivers/net/phy/at803x.c | 91 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -14,6 +14,8 @@ #include <linux/etherdevice.h> #include <linux/of_gpio.h> #include <linux/gpio/consumer.h> +#include <linux/sfp.h> +#include <linux/phylink.h> #define AT803X_SPECIFIC_STATUS 0x11 #define AT803X_SS_SPEED_MASK (3 << 14) @@ -53,9 +55,18 @@ #define AT803X_MODE_CFG_MASK 0x0F #define AT803X_MODE_CFG_SGMII 0x01 +#define AT803X_MODE_CFG_BX1000_RGMII_50 0x02 +#define AT803X_MODE_CFG_BX1000_RGMII_75 0x03 +#define AT803X_MODE_FIBER 0x01 +#define AT803X_MODE_COPPER 0x00 #define AT803X_PSSR 0x11 /*PHY-Specific Status Register*/ #define AT803X_PSSR_MR_AN_COMPLETE 0x0200 +#define PSSR_LINK BIT(10) +#define PSSR_SYNC_STATUS BIT(8) +#define PSSR_DUPLEX BIT(13) +#define PSSR_SPEED_1000 BIT(15) +#define PSSR_SPEED_100 BIT(14) #define AT803X_DEBUG_REG_0 0x00 #define AT803X_DEBUG_RX_CLK_DLY_EN BIT(15) @@ -243,10 +254,72 @@ static int at803x_resume(struct phy_devi return phy_modify(phydev, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE, 0); } +static int at803x_mode(struct phy_device *phydev) +{ + int mode; + + mode = phy_read(phydev, AT803X_REG_CHIP_CONFIG) & AT803X_MODE_CFG_MASK; + + if (mode == AT803X_MODE_CFG_BX1000_RGMII_50 || + mode == AT803X_MODE_CFG_BX1000_RGMII_75) + return AT803X_MODE_FIBER; + return AT803X_MODE_COPPER; +} + +static int at803x_sfp_insert(void *upstream, const struct sfp_eeprom_id *id) +{ + __ETHTOOL_DECLARE_LINK_MODE_MASK(at803x_support) = { 0, }; + __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, }; + struct phy_device *phydev = upstream; + phy_interface_t iface; + + phylink_set(at803x_support, 1000baseX_Full); + /* AT803x only support 1000baseX but SGMII works fine when module runs + * at 1Gbit. + */ + phylink_set(at803x_support, 1000baseT_Full); + + sfp_parse_support(phydev->sfp_bus, id, support); + + // Limit to interfaces that both sides support + linkmode_and(support, support, at803x_support); + + if (linkmode_empty(support)) + goto unsupported_mode; + + iface = sfp_select_interface(phydev->sfp_bus, support); + + if (iface != PHY_INTERFACE_MODE_SGMII && + iface != PHY_INTERFACE_MODE_1000BASEX) + goto unsupported_mode; + + dev_info(&phydev->mdio.dev, "SFP interface %s", phy_modes(iface)); + + return 0; + +unsupported_mode: + dev_info(&phydev->mdio.dev, "incompatible SFP module inserted;" + "Only SGMII at 1Gbit/1000BASEX are supported!\n"); + return -EINVAL; +} + +static const struct sfp_upstream_ops at803x_sfp_ops = { + .attach = phy_sfp_attach, + .detach = phy_sfp_detach, + .module_insert = at803x_sfp_insert, +}; + static int at803x_probe(struct phy_device *phydev) { struct device *dev = &phydev->mdio.dev; struct at803x_priv *priv; + int ret; + + if (at803x_mode(phydev) == AT803X_MODE_FIBER) { + ret = phy_sfp_probe(phydev, &at803x_sfp_ops); + if (ret < 0) + return ret; + } priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -394,6 +467,10 @@ static int at803x_read_status(struct phy { int ss, err, old_link = phydev->link; + /* Handle (Fiber) SGMII to RGMII mode */ + if (at803x_mode(phydev) == AT803X_MODE_FIBER) + return genphy_c37_read_status(phydev); + /* Update the link, but return if there was an error */ err = genphy_update_link(phydev); if (err) @@ -448,6 +525,19 @@ static int at803x_read_status(struct phy return 0; } +static int at803x_config_aneg(struct phy_device *phydev) +{ + /* Handle (Fiber) SerDes to RGMII mode */ + if (at803x_mode(phydev) == AT803X_MODE_FIBER) { + pr_warn("%s: fiber\n", __func__); + return genphy_c37_config_aneg(phydev); + } + + pr_warn("%s: enter\n", __func__); + + return genphy_config_aneg(phydev); +} + static struct phy_driver at803x_driver[] = { { /* ATHEROS 8035 */ @@ -491,6 +581,7 @@ static struct phy_driver at803x_driver[] .suspend = at803x_suspend, .resume = at803x_resume, /* PHY_GBIT_FEATURES */ + .config_aneg = at803x_config_aneg, .read_status = at803x_read_status, .aneg_done = at803x_aneg_done, .ack_interrupt = &at803x_ack_interrupt,