[PATCH net-next v2 1/2] net: phy: at803x: add pages support to AR8031/33
From: Michael Walle <hidden>
Date: 2021-02-18 19:35:13
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
The AR8031 has two register sets: Copper and Fiber. The fiber page is used in case of 100Base-FX and 1000Base-X. But more importantly it is also used for the SGMII link. Add support to switch between these two. Signed-off-by: Michael Walle <redacted> --- drivers/net/phy/at803x.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index c2aa4c92edde..194b414207d3 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c@@ -144,6 +144,9 @@ #define ATH8035_PHY_ID 0x004dd072 #define AT8030_PHY_ID_MASK 0xffffffef +#define AT803X_FIBER_PAGE 0 +#define AT803X_COPPER_PAGE 1 + MODULE_DESCRIPTION("Qualcomm Atheros AR803x PHY driver"); MODULE_AUTHOR("Matus Ujhelyi"); MODULE_LICENSE("GPL");
@@ -1143,6 +1146,36 @@ static int at803x_cable_test_start(struct phy_device *phydev) return 0; } +static int at803x_read_page(struct phy_device *phydev) +{ + int val; + + val = __phy_read(phydev, AT803X_REG_CHIP_CONFIG); + if (val < 0) + return val; + + return (val & AT803X_BT_BX_REG_SEL) ? AT803X_COPPER_PAGE : AT803X_FIBER_PAGE; +} + +static int at803x_write_page(struct phy_device *phydev, int page) +{ + u16 sel; + + switch (page) { + case AT803X_FIBER_PAGE: + sel = 0; + break; + case AT803X_COPPER_PAGE: + sel = AT803X_BT_BX_REG_SEL; + break; + default: + return -EINVAL; + } + + return __phy_modify(phydev, AT803X_REG_CHIP_CONFIG, + AT803X_BT_BX_REG_SEL, sel); +} + static struct phy_driver at803x_driver[] = { { /* Qualcomm Atheros AR8035 */
@@ -1189,6 +1222,8 @@ static struct phy_driver at803x_driver[] = { .flags = PHY_POLL_CABLE_TEST, .probe = at803x_probe, .remove = at803x_remove, + .read_page = at803x_read_page, + .write_page = at803x_write_page, .config_init = at803x_config_init, .config_aneg = at803x_config_aneg, .soft_reset = genphy_soft_reset,
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2.20.1