realtek: pcs: add per-link port storage to rtpcs_serdes

Add an s16 link_port[] array to struct rtpcs_serdes, initialised to
-1 in probe. This is preparatory storage for the port number that
each link serves; it will be populated in the follow-up fwnode_pcs
migration commit by scanning consumer DT nodes for their reg, and
consumed by the resolver when allocating rtpcs_link.

Assisted-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Link: https://github.com/openwrt/openwrt/pull/23539
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>

diff --git a/target/linux/realtek/files-6.18/drivers/net/pcs/pcs-rtl-otto.c b/target/linux/realtek/files-6.18/drivers/net/pcs/pcs-rtl-otto.c
index a7bfb6cfc9f98dc770435246e437ce00af92c7b3..507bb1bbe1a4c5f14303660add47a4321f3fdfbd 100644 (file)
--- a/target/linux/realtek/files-6.18/drivers/net/pcs/pcs-rtl-otto.c
+++ b/target/linux/realtek/files-6.18/drivers/net/pcs/pcs-rtl-otto.c
@@ -221,6 +221,7 @@ struct rtpcs_serdes {
                struct regmap_field *usxgmii_submode;   /* nullable, 93xx only */
        } swcore_regs;
        struct rtpcs_link *link[RTPCS_MAX_LINKS_PER_SDS];
+       s16 link_port[RTPCS_MAX_LINKS_PER_SDS];
 
        enum rtpcs_sds_mode hw_mode;
        u8 id;
@@ -4308,6 +4309,8 @@ static int rtpcs_probe(struct platform_device *pdev)
                sds->id = i;
                sds->ops = ctrl->cfg->sds_ops;
                sds->regs = ctrl->cfg->sds_regs;
+               for (int j = 0; j < RTPCS_MAX_LINKS_PER_SDS; j++)
+                       sds->link_port[j] = -1;
 
                ret = ctrl->cfg->sds_probe(sds);
                if (ret)