realtek: pcs: add helpers for even, odd, neighbor SerDes

Add dedicated helpers to get references to even, odd and neigbor SerDes
if needed. This should replace the various calculations scattered
throughout the code, providing a unified way to work with adjacent
SerDes.

Signed-off-by: Jonas Jelonek <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21146
Signed-off-by: Robert Marko <[email protected]>

diff --git a/target/linux/realtek/files-6.12/drivers/net/pcs/pcs-rtl-otto.c b/target/linux/realtek/files-6.12/drivers/net/pcs/pcs-rtl-otto.c
index 566e79962ca96d68fcd3746ba43b68da40f0a557..435a74af7cbd3a2c473eca3824dc809195f57754 100644 (file)
--- a/target/linux/realtek/files-6.12/drivers/net/pcs/pcs-rtl-otto.c
+++ b/target/linux/realtek/files-6.12/drivers/net/pcs/pcs-rtl-otto.c
@@ -239,6 +239,27 @@ static int rtpcs_sds_modify(struct rtpcs_ctrl *ctrl, int sds, int page, int regn
                                  mask, set);
 }
 
+__maybe_unused
+static struct rtpcs_serdes *rtpcs_sds_get_even(struct rtpcs_serdes *sds)
+{
+       u32 even_sds = sds->id & ~1;
+       return &sds->ctrl->serdes[even_sds];
+}
+
+__maybe_unused
+static struct rtpcs_serdes *rtpcs_sds_get_odd(struct rtpcs_serdes *sds)
+{
+       u32 odd_sds = sds->id | 1;
+       return &sds->ctrl->serdes[odd_sds];
+}
+
+__maybe_unused
+static struct rtpcs_serdes *rtpcs_sds_get_neighbor(struct rtpcs_serdes *sds)
+{
+       u32 nb_sds = sds->id ^ 1;
+       return &sds->ctrl->serdes[nb_sds];
+}
+
 static int rtpcs_regmap_read_bits(struct rtpcs_ctrl *ctrl, int base, int bithigh, int bitlow)
 {
        int offset = base + (bitlow / 32) * 4;