realtek: mdio: add define for RTL839x C22 reads/writes

The RTL839x allows to add an extended page operator during phy
access. This is not needed for the standard linux kernel C22
access. Give the hardcoded 0x1ff value a meaningful define.

Although it is not needed, add the corresponding register define.
This makes clear where the mask belongs to.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/23204
Signed-off-by: Robert Marko <robimarko@gmail.com>

diff --git a/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c b/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
index feda4905f127db04d849f3bb869e719d64cddf8e..5cce846ef5f51c07ef4aac5650cf613ccf38e210 100644 (file)
--- a/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
+++ b/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
@@ -73,6 +73,8 @@
 #define   RTMDIO_839X_CMD_WRITE_C22            BIT(3)
 #define   RTMDIO_839X_CMD_WRITE_C45            (BIT(2) | BIT(3))
 #define   RTMDIO_839X_CMD_MASK                 GENMASK(3, 0)
+#define RTMDIO_839X_PHYREG_CTRL                        (0x03e0)
+#define   RTMDIO_839X_PHYREG_SKIP_EXT_PAGE     GENMASK(8, 0)
 #define RTMDIO_839X_PHYREG_DATA_CTRL           (0x03F0)
 #define RTMDIO_839X_SMI_PORT_POLLING_CTRL      (0x03fc)
 #define RTMDIO_839X_SMI_GLB_CTRL               (0x03f8)
@@ -377,7 +379,7 @@ static int rtmdio_838x_write_c45(struct mii_bus *bus, u32 pn, u32 devnum, u32 re
 static int rtmdio_839x_read_c22(struct mii_bus *bus, u32 pn, u32 page, u32 reg, u32 *val)
 {
        struct rtmdio_839x_smi_access smi_access = {
-               .main_ctrl = 0x1ff,
+               .main_ctrl = RTMDIO_839X_PHYREG_SKIP_EXT_PAGE,
                .data_ctrl = pn << 16,
                .accs_ctrl = RTMDIO_839X_C22_DATA(page, reg),
        };
@@ -388,7 +390,7 @@ static int rtmdio_839x_read_c22(struct mii_bus *bus, u32 pn, u32 page, u32 reg,
 static int rtmdio_839x_write_c22(struct mii_bus *bus, u32 pn, u32 page, u32 reg, u32 val)
 {
        struct rtmdio_839x_smi_access smi_access = {
-               .main_ctrl = 0x1ff,
+               .main_ctrl = RTMDIO_839X_PHYREG_SKIP_EXT_PAGE,
                .data_ctrl = val << 16,
                .prt0_ctrl = (u32)(BIT_ULL(pn)),
                .prt1_ctrl = (u32)(BIT_ULL(pn) >> 32),