22 int rescale_process_scale(struct rescale *rescale, int scale_type,  in rescale_process_scale()  argument
33 		*val *= rescale->numerator;  in rescale_process_scale()
34 		if (rescale->denominator == 1)  in rescale_process_scale()
36 		*val2 = rescale->denominator;  in rescale_process_scale()
44 		if (!check_mul_overflow(*val, rescale->numerator, &_val) &&  in rescale_process_scale()
45 		    !check_mul_overflow(*val2, rescale->denominator, &_val2)) {  in rescale_process_scale()
53 		tmp = div_s64(tmp, rescale->denominator);  in rescale_process_scale()
54 		tmp *= rescale->numerator;  in rescale_process_scale()
86 		tmp = (s64)abs(*val) * abs(rescale->numerator);  in rescale_process_scale()
87 		*val = div_s64_rem(tmp, abs(rescale->denominator), &rem);  in rescale_process_scale()
89 		tmp = (s64)rem * mult + (s64)abs(*val2) * abs(rescale->numerator);  in rescale_process_scale()
90 		tmp = div_s64(tmp, abs(rescale->denominator));  in rescale_process_scale()
98 		if (neg ^ ((rescale->numerator < 0) ^ (rescale->denominator < 0))) {  in rescale_process_scale()
112 int rescale_process_offset(struct rescale *rescale, int scale_type,  in rescale_process_offset()  argument
120 		tmp = (s64)rescale->offset * scale2;  in rescale_process_offset()
124 		*val = div_s64(rescale->offset, scale) + schan_off;  in rescale_process_offset()
127 		tmp = (s64)rescale->offset * (1 << scale2);  in rescale_process_offset()
131 		tmp = (s64)rescale->offset * 1000000000LL;  in rescale_process_offset()
136 		tmp = (s64)rescale->offset * 1000000LL;  in rescale_process_offset()
150 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_read_raw()  local
157 		if (rescale->chan_processed)  in rescale_read_raw()
163 			return iio_read_channel_processed(rescale->source, val);  in rescale_read_raw()
165 			return iio_read_channel_raw(rescale->source, val);  in rescale_read_raw()
168 		if (rescale->chan_processed) {  in rescale_read_raw()
176 			ret = iio_read_channel_scale(rescale->source, val, val2);  in rescale_read_raw()
178 		return rescale_process_scale(rescale, ret, val, val2);  in rescale_read_raw()
204 		if (rescale->chan_processed) {  in rescale_read_raw()
205 			*val = rescale->offset;  in rescale_read_raw()
209 		if (iio_channel_has_info(rescale->source->channel,  in rescale_read_raw()
211 			ret = iio_read_channel_offset(rescale->source,  in rescale_read_raw()
217 		ret = iio_read_channel_scale(rescale->source, &scale, &scale2);  in rescale_read_raw()
218 		return rescale_process_offset(rescale, ret, scale, scale2,  in rescale_read_raw()
230 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_read_avail()  local
235 		return iio_read_avail_channel_raw(rescale->source,  in rescale_read_avail()
252 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_read_ext_info()  local
254 	return iio_read_channel_ext_info(rescale->source,  in rescale_read_ext_info()
255 					 rescale->ext_info[private].name,  in rescale_read_ext_info()
264 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_write_ext_info()  local
266 	return iio_write_channel_ext_info(rescale->source,  in rescale_write_ext_info()
267 					  rescale->ext_info[private].name,  in rescale_write_ext_info()
272 				     struct rescale *rescale)  in rescale_configure_channel()  argument
274 	struct iio_chan_spec *chan = &rescale->chan;  in rescale_configure_channel()
275 	struct iio_chan_spec const *schan = rescale->source->channel;  in rescale_configure_channel()
279 	chan->ext_info = rescale->ext_info;  in rescale_configure_channel()
280 	chan->type = rescale->cfg->type;  in rescale_configure_channel()
287 		rescale->chan_processed = true;  in rescale_configure_channel()
296 	if (rescale->offset)  in rescale_configure_channel()
305 	    !rescale->chan_processed)  in rescale_configure_channel()
312 						 struct rescale *rescale)  in rescale_current_sense_amplifier_props()  argument
336 	rescale->numerator = 1000000 / factor;  in rescale_current_sense_amplifier_props()
337 	rescale->denominator = sense / factor;  in rescale_current_sense_amplifier_props()
339 	factor = gcd(rescale->numerator, gain_mult);  in rescale_current_sense_amplifier_props()
340 	rescale->numerator /= factor;  in rescale_current_sense_amplifier_props()
341 	rescale->denominator *= gain_mult / factor;  in rescale_current_sense_amplifier_props()
343 	factor = gcd(rescale->denominator, gain_div);  in rescale_current_sense_amplifier_props()
344 	rescale->numerator *= gain_div / factor;  in rescale_current_sense_amplifier_props()
345 	rescale->denominator /= factor;  in rescale_current_sense_amplifier_props()
351 					     struct rescale *rescale)  in rescale_current_sense_shunt_props()  argument
365 	rescale->numerator = 1000000 / factor;  in rescale_current_sense_shunt_props()
366 	rescale->denominator = shunt / factor;  in rescale_current_sense_shunt_props()
372 					 struct rescale *rescale)  in rescale_voltage_divider_props()  argument
378 				       &rescale->denominator);  in rescale_voltage_divider_props()
385 				       &rescale->numerator);  in rescale_voltage_divider_props()
391 	factor = gcd(rescale->numerator, rescale->denominator);  in rescale_voltage_divider_props()
392 	rescale->numerator /= factor;  in rescale_voltage_divider_props()
393 	rescale->denominator /= factor;  in rescale_voltage_divider_props()
399 					struct rescale *rescale)  in rescale_temp_sense_rtd_props()  argument
431 	rescale->numerator = 1000000 / factor;  in rescale_temp_sense_rtd_props()
432 	rescale->denominator = tmp / factor;  in rescale_temp_sense_rtd_props()
434 	rescale->offset = -1 * ((r0 * iexc) / 1000);  in rescale_temp_sense_rtd_props()
440 					 struct rescale *rescale)  in rescale_temp_transducer_props()  argument
455 	rescale->numerator = 1000000;  in rescale_temp_transducer_props()
456 	rescale->denominator = alpha * sense;  in rescale_temp_transducer_props()
458 	rescale->offset = div_s64((s64)offset * rescale->denominator,  in rescale_temp_transducer_props()
459 				  rescale->numerator);  in rescale_temp_transducer_props()
515 	struct rescale *rescale;  in rescale_probe()  local
529 		sizeof_ext_info *= sizeof(*rescale->ext_info);  in rescale_probe()
532 	sizeof_priv = sizeof(*rescale) + sizeof_ext_info;  in rescale_probe()
538 	rescale = iio_priv(indio_dev);  in rescale_probe()
540 	rescale->cfg = device_get_match_data(dev);  in rescale_probe()
541 	rescale->numerator = 1;  in rescale_probe()
542 	rescale->denominator = 1;  in rescale_probe()
543 	rescale->offset = 0;  in rescale_probe()
545 	ret = rescale->cfg->props(dev, rescale);  in rescale_probe()
549 	if (!rescale->numerator || !rescale->denominator) {  in rescale_probe()
556 	rescale->source = source;  in rescale_probe()
561 	indio_dev->channels = &rescale->chan;  in rescale_probe()
564 		rescale->ext_info = devm_kmemdup(dev,  in rescale_probe()
567 		if (!rescale->ext_info)  in rescale_probe()
570 		for (i = 0; rescale->ext_info[i].name; ++i) {  in rescale_probe()
572 				&rescale->ext_info[i];  in rescale_probe()
582 	ret = rescale_configure_channel(dev, rescale);  in rescale_probe()