LOONGSON2_MMC_REG_INT
regmap_read(host->regmap, LOONGSON2_MMC_REG_INT, &imsk);
regmap_update_bits(host->regmap, LOONGSON2_MMC_REG_INT,
regmap_write(host->regmap, LOONGSON2_MMC_REG_INT, imsk);
regmap_write(host->regmap, LOONGSON2_MMC_REG_INT, imsk);
regmap_write(host->regmap, LOONGSON2_MMC_REG_INT, LOONGSON2_MMC_IEN_ALL);