23 int rescale_process_scale(struct rescale *rescale, int scale_type,  in rescale_process_scale()  argument
30 		*val *= rescale->numerator;  in rescale_process_scale()
31 		*val2 *= rescale->denominator;  in rescale_process_scale()
34 		*val *= rescale->numerator;  in rescale_process_scale()
35 		if (rescale->denominator == 1)  in rescale_process_scale()
37 		*val2 = rescale->denominator;  in rescale_process_scale()
41 		tmp = div_s64(tmp, rescale->denominator);  in rescale_process_scale()
42 		tmp *= rescale->numerator;  in rescale_process_scale()
51 int rescale_process_offset(struct rescale *rescale, int scale_type,  in rescale_process_offset()  argument
59 		tmp = (s64)rescale->offset * scale2;  in rescale_process_offset()
63 		*val = div_s64(rescale->offset, scale) + schan_off;  in rescale_process_offset()
66 		tmp = (s64)rescale->offset * (1 << scale2);  in rescale_process_offset()
70 		tmp = (s64)rescale->offset * 1000000000LL;  in rescale_process_offset()
75 		tmp = (s64)rescale->offset * 1000000LL;  in rescale_process_offset()
88 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_read_raw()  local
95 		if (rescale->chan_processed)  in rescale_read_raw()
101 			return iio_read_channel_processed(rescale->source, val);  in rescale_read_raw()
103 			return iio_read_channel_raw(rescale->source, val);  in rescale_read_raw()
106 		if (rescale->chan_processed) {  in rescale_read_raw()
114 			ret = iio_read_channel_scale(rescale->source, val, val2);  in rescale_read_raw()
116 		return rescale_process_scale(rescale, ret, val, val2);  in rescale_read_raw()
142 		if (rescale->chan_processed) {  in rescale_read_raw()
143 			*val = rescale->offset;  in rescale_read_raw()
147 		if (iio_channel_has_info(rescale->source->channel,  in rescale_read_raw()
149 			ret = iio_read_channel_offset(rescale->source,  in rescale_read_raw()
155 		if (iio_channel_has_info(rescale->source->channel,  in rescale_read_raw()
157 			ret = iio_read_channel_scale(rescale->source, &scale, &scale2);  in rescale_read_raw()
158 			return rescale_process_offset(rescale, ret, scale, scale2,  in rescale_read_raw()
166 		return rescale_process_offset(rescale, IIO_VAL_FRACTIONAL, 1, 1,  in rescale_read_raw()
178 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_read_avail()  local
183 		return iio_read_avail_channel_raw(rescale->source,  in rescale_read_avail()
200 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_read_ext_info()  local
202 	return iio_read_channel_ext_info(rescale->source,  in rescale_read_ext_info()
203 					 rescale->ext_info[private].name,  in rescale_read_ext_info()
212 	struct rescale *rescale = iio_priv(indio_dev);  in rescale_write_ext_info()  local
214 	return iio_write_channel_ext_info(rescale->source,  in rescale_write_ext_info()
215 					  rescale->ext_info[private].name,  in rescale_write_ext_info()
220 				     struct rescale *rescale)  in rescale_configure_channel()  argument
222 	struct iio_chan_spec *chan = &rescale->chan;  in rescale_configure_channel()
223 	struct iio_chan_spec const *schan = rescale->source->channel;  in rescale_configure_channel()
227 	chan->ext_info = rescale->ext_info;  in rescale_configure_channel()
228 	chan->type = rescale->cfg->type;  in rescale_configure_channel()
236 		rescale->chan_processed = true;  in rescale_configure_channel()
245 	if (rescale->offset)  in rescale_configure_channel()
254 	    !rescale->chan_processed)  in rescale_configure_channel()
261 						 struct rescale *rescale)  in rescale_current_sense_amplifier_props()  argument
285 	rescale->numerator = 1000000 / factor;  in rescale_current_sense_amplifier_props()
286 	rescale->denominator = sense / factor;  in rescale_current_sense_amplifier_props()
288 	factor = gcd(rescale->numerator, gain_mult);  in rescale_current_sense_amplifier_props()
289 	rescale->numerator /= factor;  in rescale_current_sense_amplifier_props()
290 	rescale->denominator *= gain_mult / factor;  in rescale_current_sense_amplifier_props()
292 	factor = gcd(rescale->denominator, gain_div);  in rescale_current_sense_amplifier_props()
293 	rescale->numerator *= gain_div / factor;  in rescale_current_sense_amplifier_props()
294 	rescale->denominator /= factor;  in rescale_current_sense_amplifier_props()
300 					     struct rescale *rescale)  in rescale_current_sense_shunt_props()  argument
314 	rescale->numerator = 1000000 / factor;  in rescale_current_sense_shunt_props()
315 	rescale->denominator = shunt / factor;  in rescale_current_sense_shunt_props()
321 					 struct rescale *rescale)  in rescale_voltage_divider_props()  argument
327 				       &rescale->denominator);  in rescale_voltage_divider_props()
334 				       &rescale->numerator);  in rescale_voltage_divider_props()
340 	factor = gcd(rescale->numerator, rescale->denominator);  in rescale_voltage_divider_props()
341 	rescale->numerator /= factor;  in rescale_voltage_divider_props()
342 	rescale->denominator /= factor;  in rescale_voltage_divider_props()
384 	struct rescale *rescale;  in rescale_probe()  local
398 		sizeof_ext_info *= sizeof(*rescale->ext_info);  in rescale_probe()
401 	sizeof_priv = sizeof(*rescale) + sizeof_ext_info;  in rescale_probe()
407 	rescale = iio_priv(indio_dev);  in rescale_probe()
409 	rescale->cfg = of_device_get_match_data(dev);  in rescale_probe()
410 	rescale->numerator = 1;  in rescale_probe()
411 	rescale->denominator = 1;  in rescale_probe()
412 	rescale->offset = 0;  in rescale_probe()
414 	ret = rescale->cfg->props(dev, rescale);  in rescale_probe()
418 	if (!rescale->numerator || !rescale->denominator) {  in rescale_probe()
425 	rescale->source = source;  in rescale_probe()
430 	indio_dev->channels = &rescale->chan;  in rescale_probe()
433 		rescale->ext_info = devm_kmemdup(dev,  in rescale_probe()
436 		if (!rescale->ext_info)  in rescale_probe()
439 		for (i = 0; rescale->ext_info[i].name; ++i) {  in rescale_probe()
441 				&rescale->ext_info[i];  in rescale_probe()
451 	ret = rescale_configure_channel(dev, rescale);  in rescale_probe()