TWL_MODULE_RTC
ret = twl_i2c_read_u8(TWL_MODULE_RTC, data, (twl_rtc->reg_map[reg]));
ret = twl_i2c_write_u8(TWL_MODULE_RTC, data, (twl_rtc->reg_map[reg]));
ret = twl_i2c_read(TWL_MODULE_RTC, rtc_data,
ret = twl_i2c_write(TWL_MODULE_RTC, rtc_data,
ret = twl_i2c_read(TWL_MODULE_RTC, rtc_data,
ret = twl_i2c_write(TWL_MODULE_RTC, alarm_data,