[PATCH net-next v23 8/9] net: dsa: mt7530: generalize and move common function to lib module

[Andrew Lunn]

On Fri, Sep 25, 2026 at 08:24:30PM +0200, Christian Marangi wrote:
> In preparation of support of DSA Switch from Airoha, create a mt7530
> library module and move there all the common function.
> 
> Function are generalized to use the reg_field regmap API but still apply
> the same exact logic. Every function is renamed to mt7530_lib prefix to
> better identify it.
> 
> Minimum modification are needed to the register header and common enum and
> macro are moved to the mt7530 library header to permit reuse.
> 
> A library struct is introduced with everything required for the common
> functions.
> 
> The generalization and the introduction of reg_field regmap API have the
> side effect of permitting to clean the mirror functions that required
> special handling for MT7530 and MT7531 based switch that had different
> registers. This is done by declaring a common MT7530 reg_field and a
> specific one in the Switch match table.
> 
> No behaviour change is expected by this change as it's just a code move and
> reimplementation.
> 
> Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
> ---
>  drivers/net/dsa/Kconfig       |    4 +
>  drivers/net/dsa/Makefile      |    1 +
>  drivers/net/dsa/mt7530-lib.c  | 1128 +++++++++++++++++++++++++++
>  drivers/net/dsa/mt7530-lib.h  |  391 ++++++++++
>  drivers/net/dsa/mt7530-mdio.c |    4 +
>  drivers/net/dsa/mt7530-mmio.c |    4 +
>  drivers/net/dsa/mt7530.c      | 1368 ++++++++-------------------------
>  drivers/net/dsa/mt7530.h      |  256 ++----

The number of mt* file keep going up. Is it time to move it into a
subdirectory?

Reviewed-by: Andrew Lunn <andrew at lunn.ch>

    Andrew