[PATCH 1/3] stagging:iio:meter: Add iio_chan_spec

Rodrigo Siqueira
2018-04-21T11:55:08Z

This patch adds iio_chan_spec struct. Additionally, the channel adds the
support for handling AIGAIN, BIGAIN, CIGAIN, NIGAIN, AVGAIN, BVGAIN, and
CVGAIN.

Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
---
drivers/staging/iio/meter/ade7854.c | 42 +++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)

diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c
index 029c3bf42d4d..2fbb2570ba54 100644
--- a/drivers/staging/iio/meter/ade7854.c
+++ b/drivers/staging/iio/meter/ade7854.c
@@ -22,6 +22,48 @@
#include "meter.h"
#include "ade7854.h"

+#define PHASEA "phaseA"
+#define PHASEB "phaseB"
+#define PHASEC "phaseC"
+#define NEUTRAL "neutral"
+
+#define ADE7854_CHANNEL(_type, _name, _mask, _reg) { \
+ .type = _type, \
+ .indexed = 1, \
+ .channel = 0, \
+ .extend_name = _name, \
+ .info_mask_separate = _mask, \
+ .address = _reg, \
+ .info_mask_shared_by_dir = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .scan_index = -1, \
+}
+
+static const struct iio_chan_spec ade7854_channels[] = {
+ /* Current */
+ ADE7854_CHANNEL(IIO_CURRENT, PHASEA,
+ BIT(IIO_CHAN_INFO_SCALE),
+ ADE7854_AIGAIN),
+ ADE7854_CHANNEL(IIO_CURRENT, PHASEB,
+ BIT(IIO_CHAN_INFO_SCALE),
+ ADE7854_BIGAIN),
+ ADE7854_CHANNEL(IIO_CURRENT, PHASEC,
+ BIT(IIO_CHAN_INFO_SCALE),
+ ADE7854_CIGAIN),
+ ADE7854_CHANNEL(IIO_CURRENT, NEUTRAL,
+ BIT(IIO_CHAN_INFO_SCALE),
+ ADE7854_NIGAIN),
+ /* Voltage */
+ ADE7854_CHANNEL(IIO_VOLTAGE, PHASEA,
+ BIT(IIO_CHAN_INFO_SCALE),
+ ADE7854_AVGAIN),
+ ADE7854_CHANNEL(IIO_VOLTAGE, PHASEB,
+ BIT(IIO_CHAN_INFO_SCALE),
+ ADE7854_BVGAIN),
+ ADE7854_CHANNEL(IIO_VOLTAGE, PHASEC,
+ BIT(IIO_CHAN_INFO_SCALE),
+ ADE7854_CVGAIN),
+};
+
static ssize_t ade7854_read_8bit(struct device *dev,
struct device_attribute *attr,
char *buf)
--
2.17.0