MDIO_READ
if (cmd == MDIO_READ) {
skb = qca8k_alloc_mdio_header(MDIO_READ, reg, NULL,
read_skb = qca8k_alloc_mdio_header(MDIO_READ, QCA8K_MDIO_MASTER_CTRL, &clear_val,
writel_relaxed(MDIO_READ | phy << 8 | reg, base + MDIO_SINGLE_CMD);
u32 val = MDIO_REQUEST | MDIO_READ |
iowrite16(MDIO_READ | reg | (phy_addr << 8), ioaddr + MMDIO);
if (!(cmd & MDIO_READ))
ctrl->op_c22_read = MDIO_READ;