diff options
Diffstat (limited to 'target/linux/realtek/files-5.10/drivers/net/phy/rtl83xx-phy.c')
-rw-r--r-- | target/linux/realtek/files-5.10/drivers/net/phy/rtl83xx-phy.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/realtek/files-5.10/drivers/net/phy/rtl83xx-phy.c b/target/linux/realtek/files-5.10/drivers/net/phy/rtl83xx-phy.c index 636cda287b..dbeea98101 100644 --- a/target/linux/realtek/files-5.10/drivers/net/phy/rtl83xx-phy.c +++ b/target/linux/realtek/files-5.10/drivers/net/phy/rtl83xx-phy.c @@ -312,6 +312,52 @@ int rtl930x_write_sds_phy(int phy_addr, int page, int phy_reg, u16 v) return 0; } +int rtl931x_read_sds_phy(int phy_addr, int page, int phy_reg) +{ + int i; + u32 cmd = phy_addr << 2 | page << 7 | phy_reg << 13 | 1; + + pr_debug("%s: phy_addr(SDS-ID) %d, phy_reg: %d\n", __func__, phy_addr, phy_reg); + sw_w32(cmd, RTL931X_SERDES_INDRT_ACCESS_CTRL); + + for (i = 0; i < 100; i++) { + if (!(sw_r32(RTL931X_SERDES_INDRT_ACCESS_CTRL) & 0x1)) + break; + mdelay(1); + } + + if (i >= 100) + return -EIO; + + pr_debug("%s: returning %04x\n", __func__, sw_r32(RTL931X_SERDES_INDRT_DATA_CTRL) & 0xffff); + return sw_r32(RTL931X_SERDES_INDRT_DATA_CTRL) & 0xffff; +} + +int rtl931x_write_sds_phy(int phy_addr, int page, int phy_reg, u16 v) +{ + int i; + u32 cmd; + + cmd = phy_addr << 2 | page << 7 | phy_reg << 13; + sw_w32(cmd, RTL931X_SERDES_INDRT_ACCESS_CTRL); + + sw_w32(v, RTL931X_SERDES_INDRT_DATA_CTRL); + + cmd = sw_r32(RTL931X_SERDES_INDRT_ACCESS_CTRL) | 0x3; + sw_w32(cmd, RTL931X_SERDES_INDRT_ACCESS_CTRL); + + for (i = 0; i < 100; i++) { + if (!(sw_r32(RTL931X_SERDES_INDRT_ACCESS_CTRL) & 0x1)) + break; + mdelay(1); + } + + if (i >= 100) + return -EIO; + + return 0; +} + /* * On the RTL838x SoCs, the internal SerDes is accessed through direct access to * standard PHY registers, where a 32 bit register holds a 16 bit word as found |