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Diffstat (limited to 'drivers/iio/adc/mcp320x.c')
-rw-r--r--drivers/iio/adc/mcp320x.c31
1 files changed, 19 insertions, 12 deletions
diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c
index d1c05f6eed18..a850ca7d1eda 100644
--- a/drivers/iio/adc/mcp320x.c
+++ b/drivers/iio/adc/mcp320x.c
@@ -187,26 +187,27 @@ out:
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) \
}
-#define MCP320X_VOLTAGE_CHANNEL_DIFF(num) \
+#define MCP320X_VOLTAGE_CHANNEL_DIFF(chan1, chan2) \
{ \
.type = IIO_VOLTAGE, \
.indexed = 1, \
- .channel = (num * 2), \
- .channel2 = (num * 2 + 1), \
- .address = (num * 2), \
+ .channel = (chan1), \
+ .channel2 = (chan2), \
+ .address = (chan1), \
.differential = 1, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) \
}
static const struct iio_chan_spec mcp3201_channels[] = {
- MCP320X_VOLTAGE_CHANNEL_DIFF(0),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(0, 1),
};
static const struct iio_chan_spec mcp3202_channels[] = {
MCP320X_VOLTAGE_CHANNEL(0),
MCP320X_VOLTAGE_CHANNEL(1),
- MCP320X_VOLTAGE_CHANNEL_DIFF(0),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(0, 1),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(1, 0),
};
static const struct iio_chan_spec mcp3204_channels[] = {
@@ -214,8 +215,10 @@ static const struct iio_chan_spec mcp3204_channels[] = {
MCP320X_VOLTAGE_CHANNEL(1),
MCP320X_VOLTAGE_CHANNEL(2),
MCP320X_VOLTAGE_CHANNEL(3),
- MCP320X_VOLTAGE_CHANNEL_DIFF(0),
- MCP320X_VOLTAGE_CHANNEL_DIFF(1),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(0, 1),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(1, 0),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(2, 3),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(3, 2),
};
static const struct iio_chan_spec mcp3208_channels[] = {
@@ -227,10 +230,14 @@ static const struct iio_chan_spec mcp3208_channels[] = {
MCP320X_VOLTAGE_CHANNEL(5),
MCP320X_VOLTAGE_CHANNEL(6),
MCP320X_VOLTAGE_CHANNEL(7),
- MCP320X_VOLTAGE_CHANNEL_DIFF(0),
- MCP320X_VOLTAGE_CHANNEL_DIFF(1),
- MCP320X_VOLTAGE_CHANNEL_DIFF(2),
- MCP320X_VOLTAGE_CHANNEL_DIFF(3),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(0, 1),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(1, 0),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(2, 3),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(3, 2),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(4, 5),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(5, 4),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(6, 7),
+ MCP320X_VOLTAGE_CHANNEL_DIFF(7, 6),
};
static const struct iio_info mcp320x_info = {