271 static int ab8500_rtc_set_calibration(struct device *dev, int calibration)  in ab8500_rtc_set_calibration()  argument
277 	 * Check that the calibration value (which is in units of 0.5  in ab8500_rtc_set_calibration()
283 	if ((calibration < -127) || (calibration > 127)) {  in ab8500_rtc_set_calibration()
293 	if (calibration >= 0)  in ab8500_rtc_set_calibration()
294 		rtccal = 0x7F & calibration;  in ab8500_rtc_set_calibration()
296 		rtccal = ~(calibration - 1) | 0x80;  in ab8500_rtc_set_calibration()
304 static int ab8500_rtc_get_calibration(struct device *dev, int *calibration)  in ab8500_rtc_get_calibration()  argument
318 			*calibration = 0 - (rtccal & 0x7F);  in ab8500_rtc_get_calibration()
320 			*calibration = 0x7F & rtccal;  in ab8500_rtc_get_calibration()
331 	int calibration = 0;  in ab8500_sysfs_store_rtc_calibration()  local
333 	if (sscanf(buf, " %i ", &calibration) != 1) {  in ab8500_sysfs_store_rtc_calibration()
334 		dev_err(dev, "Failed to store RTC calibration attribute\n");  in ab8500_sysfs_store_rtc_calibration()
338 	retval = ab8500_rtc_set_calibration(dev, calibration);  in ab8500_sysfs_store_rtc_calibration()
347 	int  calibration = 0;  in ab8500_sysfs_show_rtc_calibration()  local
349 	retval = ab8500_rtc_get_calibration(dev, &calibration);  in ab8500_sysfs_show_rtc_calibration()
351 		dev_err(dev, "Failed to read RTC calibration attribute\n");  in ab8500_sysfs_show_rtc_calibration()
356 	return sprintf(buf, "%d\n", calibration);  in ab8500_sysfs_show_rtc_calibration()