diff options
| author | Potin Lai <potin.lai@quantatw.com> | 2022-04-07 09:17:38 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-08 12:20:52 +0100 |
| commit | e6df1b4a2759d3781f17ae9cdf96bc607e20d0b8 (patch) | |
| tree | e2e24f4bba2d3e8e6574b889101e7038f80173c5 /drivers/net/mdio | |
| parent | eb0571932314e6f4f0cb4e05c590fe78c01acbd7 (diff) | |
net: mdio: aspeed: Add c45 support
Add Clause 45 support for Aspeed mdio driver.
Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/mdio')
| -rw-r--r-- | drivers/net/mdio/mdio-aspeed.c | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/drivers/net/mdio/mdio-aspeed.c b/drivers/net/mdio/mdio-aspeed.c index 5becddb56117..7aa49827196f 100644 --- a/drivers/net/mdio/mdio-aspeed.c +++ b/drivers/net/mdio/mdio-aspeed.c @@ -21,6 +21,10 @@ #define ASPEED_MDIO_CTRL_OP GENMASK(27, 26) #define MDIO_C22_OP_WRITE 0b01 #define MDIO_C22_OP_READ 0b10 +#define MDIO_C45_OP_ADDR 0b00 +#define MDIO_C45_OP_WRITE 0b01 +#define MDIO_C45_OP_PREAD 0b10 +#define MDIO_C45_OP_READ 0b11 #define ASPEED_MDIO_CTRL_PHYAD GENMASK(25, 21) #define ASPEED_MDIO_CTRL_REGAD GENMASK(20, 16) #define ASPEED_MDIO_CTRL_MIIWDATA GENMASK(15, 0) @@ -66,8 +70,8 @@ static int aspeed_mdio_op(struct mii_bus *bus, u8 st, u8 op, u8 phyad, u8 regad, static int aspeed_mdio_get_data(struct mii_bus *bus) { struct aspeed_mdio *ctx = bus->priv; - int rc; u32 data; + int rc; rc = readl_poll_timeout(ctx->base + ASPEED_MDIO_DATA, data, data & ASPEED_MDIO_DATA_IDLE, @@ -100,15 +104,37 @@ static int aspeed_mdio_write_c22(struct mii_bus *bus, int addr, int regnum, static int aspeed_mdio_read_c45(struct mii_bus *bus, int addr, int regnum) { - /* TODO: add c45 support */ - return -EOPNOTSUPP; + u8 c45_dev = (regnum >> 16) & 0x1F; + u16 c45_addr = regnum & 0xFFFF; + int rc; + + rc = aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_ADDR, + addr, c45_dev, c45_addr); + if (rc < 0) + return rc; + + rc = aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_READ, + addr, c45_dev, 0); + if (rc < 0) + return rc; + + return aspeed_mdio_get_data(bus); } static int aspeed_mdio_write_c45(struct mii_bus *bus, int addr, int regnum, u16 val) { - /* TODO: add c45 support */ - return -EOPNOTSUPP; + u8 c45_dev = (regnum >> 16) & 0x1F; + u16 c45_addr = regnum & 0xFFFF; + int rc; + + rc = aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_ADDR, + addr, c45_dev, c45_addr); + if (rc < 0) + return rc; + + return aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C45, MDIO_C45_OP_WRITE, + addr, c45_dev, val); } static int aspeed_mdio_read(struct mii_bus *bus, int addr, int regnum) @@ -153,6 +179,7 @@ static int aspeed_mdio_probe(struct platform_device *pdev) bus->parent = &pdev->dev; bus->read = aspeed_mdio_read; bus->write = aspeed_mdio_write; + bus->probe_capabilities = MDIOBUS_C22_C45; rc = of_mdiobus_register(bus, pdev->dev.of_node); if (rc) { |