RM3100_REG_TMRC
ret = regmap_read(data->regmap, RM3100_REG_TMRC, &tmp);
ret = regmap_write(regmap, RM3100_REG_TMRC, i + RM3100_TMRC_OFFSET);
ret = regmap_read(regmap, RM3100_REG_TMRC, &tmp);
#define RM3100_W_REG_END RM3100_REG_TMRC