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| author | Michael Hennerich <michael.hennerich@analog.com> | 2012-05-11 11:36:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-14 13:15:38 -0700 |
| commit | 67eedba39ed1ac29908453647652c02fbbeeca1b (patch) | |
| tree | 76f65924a8813a964fbd01ac6e750205082d8ed5 /drivers/iio | |
| parent | 49b81a3c7415d9b02169f37b8559d468fd17686a (diff) | |
| download | linux-67eedba39ed1ac29908453647652c02fbbeeca1b.tar.gz linux-67eedba39ed1ac29908453647652c02fbbeeca1b.tar.bz2 linux-67eedba39ed1ac29908453647652c02fbbeeca1b.zip | |
iio: core: introduce dB scle: IIO_VAL_INT_PLUS_MICRO_DB
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/industrialio-core.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index b39a58757907..425cd4cf31fb 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -295,26 +295,33 @@ static ssize_t iio_read_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 val, val2; + bool scale_db = false; int ret = indio_dev->info->read_raw(indio_dev, this_attr->c, &val, &val2, this_attr->address); if (ret < 0) return ret; - if (ret == IIO_VAL_INT) + switch (ret) { + case IIO_VAL_INT: return sprintf(buf, "%d\n", val); - else if (ret == IIO_VAL_INT_PLUS_MICRO) { + case IIO_VAL_INT_PLUS_MICRO_DB: + scale_db = true; + case IIO_VAL_INT_PLUS_MICRO: if (val2 < 0) - return sprintf(buf, "-%d.%06u\n", val, -val2); + return sprintf(buf, "-%d.%06u%s\n", val, -val2, + scale_db ? " dB" : ""); else - return sprintf(buf, "%d.%06u\n", val, val2); - } else if (ret == IIO_VAL_INT_PLUS_NANO) { + return sprintf(buf, "%d.%06u%s\n", val, val2, + scale_db ? " dB" : ""); + case 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 + default: return 0; + } } static ssize_t iio_write_channel_info(struct device *dev, |