iio:common: Removed stuff macros, added num_data_channels on st_sensors struct and added support on one-shot sysfs reads to 3 byte channel

This patch introduce num_data_channels variable on st_sensors struct
to manage different type of channels (size or number) in
st_sensors_get_buffer_element function.
Removed ST_SENSORS_NUMBER_DATA_CHANNELS and ST_SENSORS_BYTE_FOR_CHANNEL
and used struct iio_chan_spec const *ch to catch data.
Added 3 byte channel data support on one-shot reads.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h
index 5ffd763702dc..72b26940730d 100644
--- a/include/linux/iio/common/st_sensors.h
+++ b/include/linux/iio/common/st_sensors.h
@@ -24,9 +24,7 @@
 #define ST_SENSORS_FULLSCALE_AVL_MAX            10
 
 #define ST_SENSORS_NUMBER_ALL_CHANNELS          4
-#define ST_SENSORS_NUMBER_DATA_CHANNELS         3
 #define ST_SENSORS_ENABLE_ALL_AXIS              0x07
-#define ST_SENSORS_BYTE_FOR_CHANNEL             2
 #define ST_SENSORS_SCAN_X                       0
 #define ST_SENSORS_SCAN_Y                       1
 #define ST_SENSORS_SCAN_Z                       2
@@ -202,6 +200,7 @@ struct st_sensors {
  * @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
  * @buffer_data: Data used by buffer part.
  * @odr: Output data rate of the sensor [Hz].
+ * num_data_channels: Number of data channels used in buffer.
  * @get_irq_data_ready: Function to get the IRQ used for data ready signal.
  * @tf: Transfer function structure used by I/O operations.
  * @tb: Transfer buffers and mutex used by I/O operations.
@@ -218,6 +217,7 @@ struct st_sensor_data {
         char *buffer_data;
 
         unsigned int odr;
+        unsigned int num_data_channels;
 
         unsigned int (*get_irq_data_ready) (struct iio_dev *indio_dev);