[PATCH] net: phy: realtek: Add support for RTL9000AA/AN

[Yuusuke Ashizuka]

RTL9000AA/AN as 100BASE-T1 is following:
- 100 Mbps
- Full duplex
- Link Status Change Interrupt

Signed-off-by: Yuusuke Ashizuka <ashid...@fujitsu.com>
Signed-off-by: Torii Kenichi <torii.k...@fujitsu.com>
---
 drivers/net/phy/realtek.c | 51 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 575580d3ffe0..ccd3368ba14e 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -54,6 +54,9 @@
 #define RTL_LPADV_5000FULL                     BIT(6)
 #define RTL_LPADV_2500FULL                     BIT(5)
 
+#define RTL9000A_GINMR                         0x14
+#define RTL9000A_GINMR_LINK_STATUS             BIT(4)
+
 #define RTLGEN_SPEED_MASK                      0x0630
 
 #define RTL_GENERIC_PHYID                      0x001cc800
@@ -547,6 +550,41 @@ static int rtlgen_resume(struct phy_device *phydev)
        return ret;
 }
 
+static int rtl9000a_config_init(struct phy_device *phydev)
+{
+       phydev->autoneg = AUTONEG_DISABLE;
+       phydev->speed = SPEED_100;
+       phydev->duplex = DUPLEX_FULL;
+
+       return 0;
+}
+
+static int rtl9000a_config_aneg(struct phy_device *phydev)
+{
+       return 0;
+}
+
+static int rtl9000a_ack_interrupt(struct phy_device *phydev)
+{
+       int err;
+
+       err = phy_read(phydev, RTL8211F_INSR);
+
+       return (err < 0) ? err : 0;
+}
+
+static int rtl9000a_config_intr(struct phy_device *phydev)
+{
+       u16 val;
+
+       if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+               val = (u16)~RTL9000A_GINMR_LINK_STATUS;
+       else
+               val = ~0;
+
+       return phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val);
+}
+
 static struct phy_driver realtek_drvs[] = {
        {
                PHY_ID_MATCH_EXACT(0x00008201),
@@ -674,6 +712,19 @@ static struct phy_driver realtek_drvs[] = {
                .config_intr    = genphy_no_config_intr,
                .suspend        = genphy_suspend,
                .resume         = genphy_resume,
+       }, {
+               PHY_ID_MATCH_EXACT(0x001ccb00),
+               .name           = "RTL9000AA/AN Ethernet",
+               .features       = PHY_BASIC_T1_FEATURES,
+               .config_init    = rtl9000a_config_init,
+               .config_aneg    = rtl9000a_config_aneg,
+               .read_status    = genphy_update_link,
+               .ack_interrupt  = rtl9000a_ack_interrupt,
+               .config_intr    = rtl9000a_config_intr,
+               .suspend        = genphy_suspend,
+               .resume         = genphy_resume,
+               .read_page      = rtl821x_read_page,
+               .write_page     = rtl821x_write_page,
        },
 };
 
-- 
2.29.2