diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/790-v6.0-net-mii-add-mii_bmcr_encode_fixed.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/790-v6.0-net-mii-add-mii_bmcr_encode_fixed.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/790-v6.0-net-mii-add-mii_bmcr_encode_fixed.patch b/target/linux/generic/backport-5.15/790-v6.0-net-mii-add-mii_bmcr_encode_fixed.patch new file mode 100644 index 0000000000..87d7ff6154 --- /dev/null +++ b/target/linux/generic/backport-5.15/790-v6.0-net-mii-add-mii_bmcr_encode_fixed.patch @@ -0,0 +1,55 @@ +From bdb6cfe7512f7a214815a3092f0be50963dcacbc Mon Sep 17 00:00:00 2001 +From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk> +Date: Sat, 18 Jun 2022 11:28:32 +0100 +Subject: [PATCH] net: mii: add mii_bmcr_encode_fixed() + +Add a function to encode a fixed speed/duplex to a BMCR value. + +Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + include/linux/mii.h | 35 +++++++++++++++++++++++++++++++++++ + 1 file changed, 35 insertions(+) + +--- a/include/linux/mii.h ++++ b/include/linux/mii.h +@@ -595,4 +595,39 @@ static inline u8 mii_resolve_flowctrl_fd + return cap; + } + ++/** ++ * mii_bmcr_encode_fixed - encode fixed speed/duplex settings to a BMCR value ++ * @speed: a SPEED_* value ++ * @duplex: a DUPLEX_* value ++ * ++ * Encode the speed and duplex to a BMCR value. 2500, 1000, 100 and 10 Mbps are ++ * supported. 2500Mbps is encoded to 1000Mbps. Other speeds are encoded as 10 ++ * Mbps. Unknown duplex values are encoded to half-duplex. ++ */ ++static inline u16 mii_bmcr_encode_fixed(int speed, int duplex) ++{ ++ u16 bmcr; ++ ++ switch (speed) { ++ case SPEED_2500: ++ case SPEED_1000: ++ bmcr = BMCR_SPEED1000; ++ break; ++ ++ case SPEED_100: ++ bmcr = BMCR_SPEED100; ++ break; ++ ++ case SPEED_10: ++ default: ++ bmcr = BMCR_SPEED10; ++ break; ++ } ++ ++ if (duplex == DUPLEX_FULL) ++ bmcr |= BMCR_FULLDPLX; ++ ++ return bmcr; ++} ++ + #endif /* __LINUX_MII_H__ */ |