Re: [RFC v8 net-next 11/16] net: mscc: ocelot: expose regfield definition to be used by other drivers

[Vladimir Oltean <vladimir.oltean@nxp.com>]

On Sun, May 08, 2022 at 11:53:08AM -0700, Colin Foster wrote:
> The ocelot_regfields struct is common between several different chips, some
> of which can only be controlled externally. Export this structure so it
> doesn't have to be duplicated in these other drivers.
> 
> Rename the structure as well, to follow the conventions of other shared
> resources.
> 
> Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
> ---

Doesn't the symbol need to be actually _exported_ (EXPORT_SYMBOL) to
work when CONFIG_MSCC_OCELOT_SWITCH_LIB is a module?

>  drivers/net/ethernet/mscc/ocelot_vsc7514.c | 60 +---------------------
>  drivers/net/ethernet/mscc/vsc7514_regs.c   | 59 +++++++++++++++++++++
>  include/soc/mscc/vsc7514_regs.h            |  2 +
>  3 files changed, 62 insertions(+), 59 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> index 68d205088665..a13fec7247d6 100644
> --- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> +++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> @@ -38,64 +38,6 @@ static const u32 *ocelot_regmap[TARGET_MAX] = {
>  	[DEV_GMII] = vsc7514_dev_gmii_regmap,
>  };
>  
> -static const struct reg_field ocelot_regfields[REGFIELD_MAX] = {
> -};
> -
>  static const struct ocelot_stat_layout ocelot_stats_layout[] = {
>  	{ .name = "rx_octets", .offset = 0x00, },
>  	{ .name = "rx_unicast", .offset = 0x01, },
> @@ -231,7 +173,7 @@ static int ocelot_chip_init(struct ocelot *ocelot, const struct ocelot_ops *ops)
>  	ocelot->num_mact_rows = 1024;
>  	ocelot->ops = ops;
>  
> -	ret = ocelot_regfields_init(ocelot, ocelot_regfields);
> +	ret = ocelot_regfields_init(ocelot, vsc7514_regfields);
>  	if (ret)
>  		return ret;
>  
> diff --git a/drivers/net/ethernet/mscc/vsc7514_regs.c b/drivers/net/ethernet/mscc/vsc7514_regs.c
> index c2af4eb8ca5d..847e64d11075 100644
> --- a/drivers/net/ethernet/mscc/vsc7514_regs.c
> +++ b/drivers/net/ethernet/mscc/vsc7514_regs.c
> @@ -9,6 +9,65 @@
>  #include <soc/mscc/vsc7514_regs.h>
>  #include "ocelot.h"
>  
> +const struct reg_field vsc7514_regfields[REGFIELD_MAX] = {
> +};
> +
>  const u32 vsc7514_ana_regmap[] = {
>  	REG(ANA_ADVLEARN,				0x009000),
>  	REG(ANA_VLANMASK,				0x009004),
> diff --git a/include/soc/mscc/vsc7514_regs.h b/include/soc/mscc/vsc7514_regs.h
> index ceee26c96959..9b40e7d00ec5 100644
> --- a/include/soc/mscc/vsc7514_regs.h
> +++ b/include/soc/mscc/vsc7514_regs.h
> @@ -10,6 +10,8 @@
>  
>  #include <soc/mscc/ocelot_vcap.h>
>  
> +extern const struct reg_field vsc7514_regfields[REGFIELD_MAX];
> +
>  extern const u32 vsc7514_ana_regmap[];
>  extern const u32 vsc7514_qs_regmap[];
>  extern const u32 vsc7514_qsys_regmap[];
> -- 
> 2.25.1
>