222 static int ab8500_rtc_set_calibration(struct device *dev, int calibration)  in ab8500_rtc_set_calibration()  argument
228 	 * Check that the calibration value (which is in units of 0.5  in ab8500_rtc_set_calibration()
234 	if ((calibration < -127) || (calibration > 127)) {  in ab8500_rtc_set_calibration()
244 	if (calibration >= 0)  in ab8500_rtc_set_calibration()
245 		rtccal = 0x7F & calibration;  in ab8500_rtc_set_calibration()
247 		rtccal = ~(calibration - 1) | 0x80;  in ab8500_rtc_set_calibration()
255 static int ab8500_rtc_get_calibration(struct device *dev, int *calibration)  in ab8500_rtc_get_calibration()  argument
269 			*calibration = 0 - (rtccal & 0x7F);  in ab8500_rtc_get_calibration()
271 			*calibration = 0x7F & rtccal;  in ab8500_rtc_get_calibration()
282 	int calibration = 0;  in ab8500_sysfs_store_rtc_calibration()  local
284 	if (sscanf(buf, " %i ", &calibration) != 1) {  in ab8500_sysfs_store_rtc_calibration()
285 		dev_err(dev, "Failed to store RTC calibration attribute\n");  in ab8500_sysfs_store_rtc_calibration()
289 	retval = ab8500_rtc_set_calibration(dev, calibration);  in ab8500_sysfs_store_rtc_calibration()
298 	int  calibration = 0;  in ab8500_sysfs_show_rtc_calibration()  local
300 	retval = ab8500_rtc_get_calibration(dev, &calibration);  in ab8500_sysfs_show_rtc_calibration()
302 		dev_err(dev, "Failed to read RTC calibration attribute\n");  in ab8500_sysfs_show_rtc_calibration()
307 	return sprintf(buf, "%d\n", calibration);  in ab8500_sysfs_show_rtc_calibration()