Proposal to add full scale attribute for channel and sysfs macro for full scale available. This method will substitute the change full scale by write gain attribute that is inefficient.
---
include/linux/iio/iio.h | 5 +++++
include/linux/iio/sysfs.h | 16 ++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index da8c776..e250d25 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -36,6 +36,7 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_PHASE,
IIO_CHAN_INFO_HARDWAREGAIN,
IIO_CHAN_INFO_HYSTERESIS,
+ IIO_CHAN_INFO_FULL_SCALE,
};
#define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2)
@@ -107,6 +108,10 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HYSTERESIS)
#define IIO_CHAN_INFO_HYSTERESIS_SHARED_BIT \
IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HYSTERESIS)
+#define IIO_CHAN_INFO_FULL_SCALE_SEPARATE_BIT \
+ IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_FULL_SCALE)
+#define IIO_CHAN_INFO_FULL_SCALE_SHARED_BIT \
+ IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_FULL_SCALE)
enum iio_endian {
IIO_CPU,
diff --git a/include/linux/iio/sysfs.h b/include/linux/iio/sysfs.h
index b7a934b..7e322a9 100644
--- a/include/linux/iio/sysfs.h
+++ b/include/linux/iio/sysfs.h
@@ -104,6 +104,22 @@ struct iio_const_attr {
**/
#define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string) \
IIO_CONST_ATTR(sampling_frequency_available, _string)
+/**
+ * IIO_DEV_ATTR_FULL_SCALE_AVAIL - list available full scales
+ * @_show: output method for the attribute
+ *
+ * May be mode dependent on some devices
+ **/
+#define IIO_DEV_ATTR_FULL_SCALE_AVAIL(_show) \
+ IIO_DEVICE_ATTR(full_scale_available, S_IRUGO, _show, NULL, 0)
+/**
+ * IIO_CONST_ATTR_FULL_SCALE_AVAIL - list available full scales
+ * @_string: full scale string for the attribute
+ *
+ * Constant version
+ **/
+#define IIO_CONST_ATTR_FULL_SCALE_AVAIL(_string) \
+ IIO_CONST_ATTR(full_scale_available, _string)
#define IIO_DEV_ATTR_TEMP_RAW(_show) \
IIO_DEVICE_ATTR(in_temp_raw, S_IRUGO, _show, NULL, 0)
--
1.7.9.5
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