-#define PINMUX_CFG_REG(name, r, r_width, f_width) \
- .reg = r, .reg_width = r_width, .field_width = f_width, \
- .enum_ids = (const u16 [(r_width / f_width) * (1 << f_width)])
+#define PINMUX_CFG_REG(name, r, r_width, f_width, ids) \
+ .reg = r, .reg_width = r_width, \
+ .field_width = f_width + BUILD_BUG_ON_ZERO(r_width % f_width) + \
+ BUILD_BUG_ON_ZERO(sizeof((const u16 []) { ids }) / sizeof(u16) != \
+ (r_width / f_width) * (1 << f_width)), \
+ .enum_ids = (const u16 [(r_width / f_width) * (1 << f_width)]) \
+ { ids }