net: phy: meson-gxl: add interrupt support

Enable interrupt support in meson-gxl PHY driver

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c
index ddc9242..ee0aa18 100644 (file)
--- a/drivers/net/phy/meson-gxl.c
+++ b/drivers/net/phy/meson-gxl.c
@@ -33,6 +33,14 @@
 #define  TSTCNTL_WRITE_ADDRESS GENMASK(4, 0)
 #define TSTREAD1       21
 #define TSTWRITE       23
+#define INTSRC_FLAG    29
+#define  INTSRC_ANEG_PR                BIT(1)
+#define  INTSRC_PARALLEL_FAULT BIT(2)
+#define  INTSRC_ANEG_LP_ACK    BIT(3)
+#define  INTSRC_LINK_DOWN      BIT(4)
+#define  INTSRC_REMOTE_FAULT   BIT(5)
+#define  INTSRC_ANEG_COMPLETE  BIT(6)
+#define INTSRC_MASK    30
 
 #define BANK_ANALOG_DSP                0
 #define BANK_WOL               1
@@ -193,16 +201,43 @@ read_status_continue:
        return genphy_read_status(phydev);
 }
 
+static int meson_gxl_ack_interrupt(struct phy_device *phydev)
+{
+       int ret = phy_read(phydev, INTSRC_FLAG);
+
+       return ret < 0 ? ret : 0;
+}
+
+static int meson_gxl_config_intr(struct phy_device *phydev)
+{
+       u16 val;
+
+       if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+               val = INTSRC_ANEG_PR
+                       | INTSRC_PARALLEL_FAULT
+                       | INTSRC_ANEG_LP_ACK
+                       | INTSRC_LINK_DOWN
+                       | INTSRC_REMOTE_FAULT
+                       | INTSRC_ANEG_COMPLETE;
+       } else {
+               val = 0;
+       }
+
+       return phy_write(phydev, INTSRC_MASK, val);
+}
+
 static struct phy_driver meson_gxl_phy[] = {
        {
                .phy_id         = 0x01814400,
                .phy_id_mask    = 0xfffffff0,
                .name           = "Meson GXL Internal PHY",
                .features       = PHY_BASIC_FEATURES,
-               .flags          = PHY_IS_INTERNAL,
+               .flags          = PHY_IS_INTERNAL | PHY_HAS_INTERRUPT,
                .config_init    = meson_gxl_config_init,
                .aneg_done      = genphy_aneg_done,
                .read_status    = meson_gxl_read_status,
+               .ack_interrupt  = meson_gxl_ack_interrupt,
+               .config_intr    = meson_gxl_config_intr,
                .suspend        = genphy_suspend,
                .resume         = genphy_resume,
        },