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authorJon Mason <jon.mason@broadcom.com>2016-11-04 01:10:56 -0400
committerDavid S. Miller <davem@davemloft.net>2016-11-07 13:11:21 -0500
commit5b4e2900512321435a5cd7dd77f58f23f3109950 (patch)
tree89b1a77887873f51633a0914b6e799cb8d24cafa /drivers/net/phy/broadcom.c
parent94edc86bf13f270a0ce08bf61caf5f464057a474 (diff)
net: phy: broadcom: add bcm54xx_auxctl_read
Add a helper function to read the AUXCTL register for the BCM54xx. This mirrors the bcm54xx_auxctl_write function already present in the code. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/broadcom.c')
-rw-r--r--drivers/net/phy/broadcom.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index 583ef8a2ec8d..3a64b3d8eca8 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -30,6 +30,16 @@ MODULE_DESCRIPTION("Broadcom PHY driver");
MODULE_AUTHOR("Maciej W. Rozycki");
MODULE_LICENSE("GPL");
+static int bcm54xx_auxctl_read(struct phy_device *phydev, u16 regnum)
+{
+ /* The register must be written to both the Shadow Register Select and
+ * the Shadow Read Register Selector
+ */
+ phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum |
+ regnum << MII_BCM54XX_AUXCTL_SHDWSEL_READ_SHIFT);
+ return phy_read(phydev, MII_BCM54XX_AUX_CTL);
+}
+
static int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val)
{
return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val);