RM3100_REG_STATUS
ret = regmap_read(regmap, RM3100_REG_STATUS, &val);
ret = regmap_read(regmap, RM3100_REG_STATUS,
#define RM3100_R_REG_END RM3100_REG_STATUS
#define RM3100_V_REG_END RM3100_REG_STATUS