backfire: generic: rtl8366: introduce rtl8366_smi_rmwr function (backport of r21919)

[10.03/openwrt.git] / target / linux / generic-2.6 / files / drivers / net / phy / rtl8366_smi.c

diff --git a/target/linux/generic-2.6/files/drivers/net/phy/rtl8366_smi.c b/target/linux/generic-2.6/files/drivers/net/phy/rtl8366_smi.c
index 625a017..bb2e3ba 100644 (file)
--- a/target/linux/generic-2.6/files/drivers/net/phy/rtl8366_smi.c
+++ b/target/linux/generic-2.6/files/drivers/net/phy/rtl8366_smi.c
@@ -266,6 +266,21 @@ int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
 }
 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
 
+int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
+{
+       u32 t;
+       int err;
+
+       err = rtl8366_smi_read_reg(smi, addr, &t);
+       if (err)
+               return err;
+
+       err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
+       return err;
+
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
+
 static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
 {
        int ret;