RTL930x packs 5-bit mode fields across four registers at irregular
positions. Express this as a static reg_field table indexed by SerDes
ID; the probe hook allocates the corresponding regmap_field. The
USXGMII submode register follows the same pattern with its own
reg_field table, allocated only for 10G-capable SerDes (id 2..9).
The generic rtpcs_sds_set_mac_mode() replaces the old
__rtpcs_930x_sds_set_mac_mode() helper. The previous behaviour of
writing OFF before the target mode is intentionally dropped — it was
RTL930x-specific and not required by the hardware.
The variant-level rtpcs_930x_sds_set_mode() is kept as a pure dispatch
between the IP mode path (set_ip_mode) and the MAC mode path. The
USXGMII submode write is factored into rtpcs_93xx_sds_apply_usxgmii_submode(),
which derives the submode value from hw_mode and no-ops on SerDes
without the submode register.
The __rtpcs_930x_sds_get_mac_mode() and __rtpcs_930x_sds_get_usxgmii_submode()
helpers are dropped. They were __always_unused and depended on the
removed parallel arrays. A future get_mode path will be added if a
caller needs it, likely mirroring the setter's wrapper shape.
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/23040
Signed-off-by: Robert Marko <robimarko@gmail.com>
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