X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=drivers%2Fstaging%2Fiio%2Findustrialio-core.c;h=744153ee2edbe7d8c3852254ff5fb9446355bdd1;hb=5c04af04835269c194662be63fe168893fad667f;hp=94d3bfaa061d8e3b0ee3002f0d85ce10bfbcda95;hpb=4cb865deec59ef31d966622d1ec87411ae32dfab;p=cascardo%2Flinux.git

diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 94d3bfaa061d..744153ee2edb 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -396,6 +396,11 @@ static ssize_t iio_read_channel_info(struct device *dev,
 			return sprintf(buf, "-%d.%06u\n", val, -val2);
 		else
 			return sprintf(buf, "%d.%06u\n", val, val2);
+	} else if (ret == IIO_VAL_INT_PLUS_NANO) {
+		if (val2 < 0)
+			return sprintf(buf, "-%d.%09u\n", val, -val2);
+		else
+			return sprintf(buf, "%d.%09u\n", val, val2);
 	} else
 		return 0;
 }
@@ -407,25 +412,40 @@ static ssize_t iio_write_channel_info(struct device *dev,
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	int ret, integer = 0, micro = 0, micro_mult = 100000;
+	int ret, integer = 0, fract = 0, fract_mult = 100000;
 	bool integer_part = true, negative = false;
 
 	/* Assumes decimal - precision based on number of digits */
 	if (!indio_dev->info->write_raw)
 		return -EINVAL;
+
+	if (indio_dev->info->write_raw_get_fmt)
+		switch (indio_dev->info->write_raw_get_fmt(indio_dev,
+			this_attr->c, this_attr->address)) {
+		case IIO_VAL_INT_PLUS_MICRO:
+			fract_mult = 100000;
+			break;
+		case IIO_VAL_INT_PLUS_NANO:
+			fract_mult = 100000000;
+			break;
+		default:
+			return -EINVAL;
+		}
+
 	if (buf[0] == '-') {
 		negative = true;
 		buf++;
 	}
+
 	while (*buf) {
 		if ('0' <= *buf && *buf <= '9') {
 			if (integer_part)
 				integer = integer*10 + *buf - '0';
 			else {
-				micro += micro_mult*(*buf - '0');
-				if (micro_mult == 1)
+				fract += fract_mult*(*buf - '0');
+				if (fract_mult == 1)
 					break;
-				micro_mult /= 10;
+				fract_mult /= 10;
 			}
 		} else if (*buf == '\n') {
 			if (*(buf + 1) == '\0')
@@ -443,11 +463,11 @@ static ssize_t iio_write_channel_info(struct device *dev,
 		if (integer)
 			integer = -integer;
 		else
-			micro = -micro;
+			fract = -fract;
 	}
 
 	ret = indio_dev->info->write_raw(indio_dev, this_attr->c,
-					 integer, micro, this_attr->address);
+					 integer, fract, this_attr->address);
 	if (ret)
 		return ret;