pinctrl: sh-pfc: Add SH_PFC_PIN_GROUP_ALIAS()

Add a macro to refer to another pin group with a different name.

This will be used to rename wrongly-named pin groups, while retaining
backwards compatibility with old DTBs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

diff --git a/drivers/pinctrl/sh-pfc/sh_pfc.h b/drivers/pinctrl/sh-pfc/sh_pfc.h
index 62d3680..7fad897 100644 (file)
--- a/drivers/pinctrl/sh-pfc/sh_pfc.h
+++ b/drivers/pinctrl/sh-pfc/sh_pfc.h
@@ -39,13 +39,14 @@ struct sh_pfc_pin {
        unsigned int configs;
 };
 
-#define SH_PFC_PIN_GROUP(n)                            \
+#define SH_PFC_PIN_GROUP_ALIAS(alias, n)               \
        {                                               \
-               .name = #n,                             \
+               .name = #alias,                         \
                .pins = n##_pins,                       \
                .mux = n##_mux,                         \
                .nr_pins = ARRAY_SIZE(n##_pins),        \
        }
+#define SH_PFC_PIN_GROUP(n)    SH_PFC_PIN_GROUP_ALIAS(n, n)
 
 struct sh_pfc_pin_group {
        const char *name;