[PATCH net-next v2 9/9] net: phy: icplus: add MDI/MDIX support for IP101A/G
From: Michael Walle <hidden>
Date: 2021-02-10 16:53:04
Also in:
lkml
Subsystem:
ethernet phy library, networking drivers, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Implement the operations to set desired mode and retrieve the current mode. This feature was tested with an IP101G. Signed-off-by: Michael Walle <redacted> Reviewed-by: Andrew Lunn <andrew@lunn.ch> --- Changes since v1: - none, except that the callbacks are register for both IP101A and IP101G PHY drivers drivers/net/phy/icplus.c | 93 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+)
diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c
index 52ba5a697025..26b591e18120 100644
--- a/drivers/net/phy/icplus.c
+++ b/drivers/net/phy/icplus.c@@ -37,12 +37,17 @@ MODULE_LICENSE("GPL"); #define IP1001_SPEC_CTRL_STATUS_2 20 /* IP1001 Spec. Control Reg 2 */ #define IP1001_APS_ON 11 /* IP1001 APS Mode bit */ #define IP101A_G_APS_ON BIT(1) /* IP101A/G APS Mode bit */ +#define IP101A_G_AUTO_MDIX_DIS BIT(11) #define IP101A_G_IRQ_CONF_STATUS 0x11 /* Conf Info IRQ & Status Reg */ #define IP101A_G_IRQ_PIN_USED BIT(15) /* INTR pin used */ #define IP101A_G_IRQ_ALL_MASK BIT(11) /* IRQ's inactive */ #define IP101A_G_IRQ_SPEED_CHANGE BIT(2) #define IP101A_G_IRQ_DUPLEX_CHANGE BIT(1) #define IP101A_G_IRQ_LINK_CHANGE BIT(0) +#define IP101A_G_PHY_STATUS 18 +#define IP101A_G_MDIX BIT(9) +#define IP101A_G_PHY_SPEC_CTRL 30 +#define IP101A_G_FORCE_MDIX BIT(3) #define IP101G_PAGE_CONTROL 0x14 #define IP101G_PAGE_CONTROL_MASK GENMASK(4, 0)
@@ -297,6 +302,90 @@ static int ip101g_config_init(struct phy_device *phydev) return ip101a_g_config_intr_pin(phydev); } +static int ip101a_g_read_status(struct phy_device *phydev) +{ + int oldpage, ret, stat1, stat2; + + ret = genphy_read_status(phydev); + if (ret) + return ret; + + oldpage = phy_select_page(phydev, IP101G_DEFAULT_PAGE); + + ret = __phy_read(phydev, IP10XX_SPEC_CTRL_STATUS); + if (ret < 0) + goto out; + stat1 = ret; + + ret = __phy_read(phydev, IP101A_G_PHY_SPEC_CTRL); + if (ret < 0) + goto out; + stat2 = ret; + + if (stat1 & IP101A_G_AUTO_MDIX_DIS) { + if (stat2 & IP101A_G_FORCE_MDIX) + phydev->mdix_ctrl = ETH_TP_MDI_X; + else + phydev->mdix_ctrl = ETH_TP_MDI; + } else { + phydev->mdix_ctrl = ETH_TP_MDI_AUTO; + } + + if (stat2 & IP101A_G_MDIX) + phydev->mdix = ETH_TP_MDI_X; + else + phydev->mdix = ETH_TP_MDI; + + ret = 0; + +out: + return phy_restore_page(phydev, oldpage, ret); +} + +static int ip101a_g_config_mdix(struct phy_device *phydev) +{ + u16 ctrl = 0, ctrl2 = 0; + int oldpage, ret; + + switch (phydev->mdix_ctrl) { + case ETH_TP_MDI: + ctrl = IP101A_G_AUTO_MDIX_DIS; + break; + case ETH_TP_MDI_X: + ctrl = IP101A_G_AUTO_MDIX_DIS; + ctrl2 = IP101A_G_FORCE_MDIX; + break; + case ETH_TP_MDI_AUTO: + break; + default: + return 0; + } + + oldpage = phy_select_page(phydev, IP101G_DEFAULT_PAGE); + + ret = __phy_modify(phydev, IP10XX_SPEC_CTRL_STATUS, + IP101A_G_AUTO_MDIX_DIS, ctrl); + if (ret) + goto out; + + ret = __phy_modify(phydev, IP101A_G_PHY_SPEC_CTRL, + IP101A_G_FORCE_MDIX, ctrl2); + +out: + return phy_restore_page(phydev, oldpage, ret); +} + +static int ip101a_g_config_aneg(struct phy_device *phydev) +{ + int ret; + + ret = ip101a_g_config_mdix(phydev); + if (ret) + return ret; + + return genphy_config_aneg(phydev); +} + static int ip101a_g_ack_interrupt(struct phy_device *phydev) { int err;
@@ -503,6 +592,8 @@ static struct phy_driver icplus_driver[] = { .config_intr = ip101a_g_config_intr, .handle_interrupt = ip101a_g_handle_interrupt, .config_init = ip101a_config_init, + .config_aneg = ip101a_g_config_aneg, + .read_status = ip101a_g_read_status, .soft_reset = genphy_soft_reset, .suspend = genphy_suspend, .resume = genphy_resume,
@@ -516,6 +607,8 @@ static struct phy_driver icplus_driver[] = { .config_intr = ip101a_g_config_intr, .handle_interrupt = ip101a_g_handle_interrupt, .config_init = ip101g_config_init, + .config_aneg = ip101a_g_config_aneg, + .read_status = ip101a_g_read_status, .soft_reset = genphy_soft_reset, .get_sset_count = ip101g_get_sset_count, .get_strings = ip101g_get_strings,
--
2.20.1