[v3] iio: adc: ad7793: use read_avail iio hook for scale available
diff mbox series

Message ID 20200322152656.41669-1-alexandru.ardelean@analog.com
State New
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Series
  • [v3] iio: adc: ad7793: use read_avail iio hook for scale available
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Commit Message

Ardelean, Alexandru March 22, 2020, 3:26 p.m. UTC
This change uses the read_avail and '.info_mask_shared_by_type_available'
modifier to set the available scale.
Essentially, nothing changes to the driver's ABI.

The main idea for this patch is to remove the AD7793 driver from
checkpatch's radar. There have been about ~3 attempts to fix/break the
'in_voltage-voltage_scale_available' attribute, because checkpatch assumed
it to be an arithmetic operation and people were trying to change that.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---

Changelog v2 -> v3:
* split from series https://patchwork.kernel.org/project/linux-iio/list/?series=259659
* moved -EINVAL return to default case

 drivers/iio/adc/ad7793.c | 55 +++++++++++++++++++++++++++-------------
 1 file changed, 37 insertions(+), 18 deletions(-)

Comments

Jonathan Cameron March 28, 2020, 1:38 p.m. UTC | #1
On Sun, 22 Mar 2020 17:26:56 +0200
Alexandru Ardelean <alexandru.ardelean@analog.com> wrote:

> This change uses the read_avail and '.info_mask_shared_by_type_available'
> modifier to set the available scale.
> Essentially, nothing changes to the driver's ABI.
> 
> The main idea for this patch is to remove the AD7793 driver from
> checkpatch's radar. There have been about ~3 attempts to fix/break the
> 'in_voltage-voltage_scale_available' attribute, because checkpatch assumed
> it to be an arithmetic operation and people were trying to change that.
> 
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>

Applied thanks.  It almost seems a shame to remove the 'educational'
potential of this one but I suppose we should be 'nice' :)

Jonathan

> ---
> 
> Changelog v2 -> v3:
> * split from series https://patchwork.kernel.org/project/linux-iio/list/?series=259659
> * moved -EINVAL return to default case
> 
>  drivers/iio/adc/ad7793.c | 55 +++++++++++++++++++++++++++-------------
>  1 file changed, 37 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
> index 5592ae573e6b..7005bde50a76 100644
> --- a/drivers/iio/adc/ad7793.c
> +++ b/drivers/iio/adc/ad7793.c
> @@ -354,29 +354,28 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
>  static IIO_CONST_ATTR_NAMED(sampling_frequency_available_ad7797,
>  	sampling_frequency_available, "123 62 50 33 17 16 12 10 8 6 4");
>  
> -static ssize_t ad7793_show_scale_available(struct device *dev,
> -			struct device_attribute *attr, char *buf)
> +static int ad7793_read_avail(struct iio_dev *indio_dev,
> +			     struct iio_chan_spec const *chan,
> +			     const int **vals, int *type, int *length,
> +			     long mask)
>  {
> -	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
>  	struct ad7793_state *st = iio_priv(indio_dev);
> -	int i, len = 0;
>  
> -	for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
> -		len += sprintf(buf + len, "%d.%09u ", st->scale_avail[i][0],
> -			       st->scale_avail[i][1]);
> -
> -	len += sprintf(buf + len, "\n");
> +	switch (mask) {
> +	case IIO_CHAN_INFO_SCALE:
> +		*vals = (int *)st->scale_avail;
> +		*type = IIO_VAL_INT_PLUS_NANO;
> +		/* Values are stored in a 2D matrix  */
> +		*length = ARRAY_SIZE(st->scale_avail) * 2;
>  
> -	return len;
> +		return IIO_AVAIL_LIST;
> +	default:
> +		return -EINVAL;
> +	}
>  }
>  
> -static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available,
> -		in_voltage-voltage_scale_available, S_IRUGO,
> -		ad7793_show_scale_available, NULL, 0);
> -
>  static struct attribute *ad7793_attributes[] = {
>  	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
> -	&iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
>  	NULL
>  };
>  
> @@ -534,6 +533,7 @@ static const struct iio_info ad7793_info = {
>  	.read_raw = &ad7793_read_raw,
>  	.write_raw = &ad7793_write_raw,
>  	.write_raw_get_fmt = &ad7793_write_raw_get_fmt,
> +	.read_avail = ad7793_read_avail,
>  	.attrs = &ad7793_attribute_group,
>  	.validate_trigger = ad_sd_validate_trigger,
>  };
> @@ -547,7 +547,7 @@ static const struct iio_info ad7797_info = {
>  };
>  
>  #define __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
> -	_storagebits, _shift, _extend_name, _type, _mask_all) \
> +	_storagebits, _shift, _extend_name, _type, _mask_type_av, _mask_all) \
>  	{ \
>  		.type = (_type), \
>  		.differential = (_channel2 == -1 ? 0 : 1), \
> @@ -559,6 +559,7 @@ static const struct iio_info ad7797_info = {
>  		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
>  			BIT(IIO_CHAN_INFO_OFFSET), \
>  		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
> +		.info_mask_shared_by_type_available = (_mask_type_av), \
>  		.info_mask_shared_by_all = _mask_all, \
>  		.scan_index = (_si), \
>  		.scan_type = { \
> @@ -574,23 +575,41 @@ static const struct iio_info ad7797_info = {
>  	_storagebits, _shift) \
>  	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
>  		_storagebits, _shift, NULL, IIO_VOLTAGE, \
> +		BIT(IIO_CHAN_INFO_SCALE), \
>  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
>  
>  #define AD7793_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
>  	_storagebits, _shift) \
>  	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
>  		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
> +		BIT(IIO_CHAN_INFO_SCALE), \
>  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
>  
>  #define AD7793_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \
>  	__AD7793_CHANNEL(_si, 0, -1, _address, _bits, \
>  		_storagebits, _shift, NULL, IIO_TEMP, \
> +		0, \
>  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
>  
>  #define AD7793_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
>  	_shift) \
>  	__AD7793_CHANNEL(_si, _channel, -1, _address, _bits, \
>  		_storagebits, _shift, "supply", IIO_VOLTAGE, \
> +		0, \
> +		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> +
> +#define AD7797_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
> +	_storagebits, _shift) \
> +	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
> +		_storagebits, _shift, NULL, IIO_VOLTAGE, \
> +		0, \
> +		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> +
> +#define AD7797_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
> +	_storagebits, _shift) \
> +	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
> +		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
> +		0, \
>  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
>  
>  #define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \
> @@ -620,8 +639,8 @@ const struct iio_chan_spec _name##_channels[] = { \
>  
>  #define DECLARE_AD7797_CHANNELS(_name, _b, _sb) \
>  const struct iio_chan_spec _name##_channels[] = { \
> -	AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
> -	AD7793_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
> +	AD7797_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
> +	AD7797_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
>  	AD7793_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \
>  	AD7793_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
>  	IIO_CHAN_SOFT_TIMESTAMP(4), \
Ardelean, Alexandru March 28, 2020, 4:26 p.m. UTC | #2
On Sat, 2020-03-28 at 13:38 +0000, Jonathan Cameron wrote:
> [External]
> 
> On Sun, 22 Mar 2020 17:26:56 +0200
> Alexandru Ardelean <alexandru.ardelean@analog.com> wrote:
> 
> > This change uses the read_avail and '.info_mask_shared_by_type_available'
> > modifier to set the available scale.
> > Essentially, nothing changes to the driver's ABI.
> > 
> > The main idea for this patch is to remove the AD7793 driver from
> > checkpatch's radar. There have been about ~3 attempts to fix/break the
> > 'in_voltage-voltage_scale_available' attribute, because checkpatch assumed
> > it to be an arithmetic operation and people were trying to change that.
> > 
> > Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
> 
> Applied thanks.  It almost seems a shame to remove the 'educational'
> potential of this one but I suppose we should be 'nice' :)

we still have ad7280a to cover that for a while;
but i mostly don't want this to slip via repeated attempts at 'fixing' it

> 
> Jonathan
> 
> > ---
> > 
> > Changelog v2 -> v3:
> > * split from series 
> > https://patchwork.kernel.org/project/linux-iio/list/?series=259659
> > * moved -EINVAL return to default case
> > 
> >  drivers/iio/adc/ad7793.c | 55 +++++++++++++++++++++++++++-------------
> >  1 file changed, 37 insertions(+), 18 deletions(-)
> > 
> > diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
> > index 5592ae573e6b..7005bde50a76 100644
> > --- a/drivers/iio/adc/ad7793.c
> > +++ b/drivers/iio/adc/ad7793.c
> > @@ -354,29 +354,28 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
> >  static IIO_CONST_ATTR_NAMED(sampling_frequency_available_ad7797,
> >  	sampling_frequency_available, "123 62 50 33 17 16 12 10 8 6 4");
> >  
> > -static ssize_t ad7793_show_scale_available(struct device *dev,
> > -			struct device_attribute *attr, char *buf)
> > +static int ad7793_read_avail(struct iio_dev *indio_dev,
> > +			     struct iio_chan_spec const *chan,
> > +			     const int **vals, int *type, int *length,
> > +			     long mask)
> >  {
> > -	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
> >  	struct ad7793_state *st = iio_priv(indio_dev);
> > -	int i, len = 0;
> >  
> > -	for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
> > -		len += sprintf(buf + len, "%d.%09u ", st->scale_avail[i][0],
> > -			       st->scale_avail[i][1]);
> > -
> > -	len += sprintf(buf + len, "\n");
> > +	switch (mask) {
> > +	case IIO_CHAN_INFO_SCALE:
> > +		*vals = (int *)st->scale_avail;
> > +		*type = IIO_VAL_INT_PLUS_NANO;
> > +		/* Values are stored in a 2D matrix  */
> > +		*length = ARRAY_SIZE(st->scale_avail) * 2;
> >  
> > -	return len;
> > +		return IIO_AVAIL_LIST;
> > +	default:
> > +		return -EINVAL;
> > +	}
> >  }
> >  
> > -static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available,
> > -		in_voltage-voltage_scale_available, S_IRUGO,
> > -		ad7793_show_scale_available, NULL, 0);
> > -
> >  static struct attribute *ad7793_attributes[] = {
> >  	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
> > -	&iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
> >  	NULL
> >  };
> >  
> > @@ -534,6 +533,7 @@ static const struct iio_info ad7793_info = {
> >  	.read_raw = &ad7793_read_raw,
> >  	.write_raw = &ad7793_write_raw,
> >  	.write_raw_get_fmt = &ad7793_write_raw_get_fmt,
> > +	.read_avail = ad7793_read_avail,
> >  	.attrs = &ad7793_attribute_group,
> >  	.validate_trigger = ad_sd_validate_trigger,
> >  };
> > @@ -547,7 +547,7 @@ static const struct iio_info ad7797_info = {
> >  };
> >  
> >  #define __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
> > -	_storagebits, _shift, _extend_name, _type, _mask_all) \
> > +	_storagebits, _shift, _extend_name, _type, _mask_type_av, _mask_all) \
> >  	{ \
> >  		.type = (_type), \
> >  		.differential = (_channel2 == -1 ? 0 : 1), \
> > @@ -559,6 +559,7 @@ static const struct iio_info ad7797_info = {
> >  		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
> >  			BIT(IIO_CHAN_INFO_OFFSET), \
> >  		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
> > +		.info_mask_shared_by_type_available = (_mask_type_av), \
> >  		.info_mask_shared_by_all = _mask_all, \
> >  		.scan_index = (_si), \
> >  		.scan_type = { \
> > @@ -574,23 +575,41 @@ static const struct iio_info ad7797_info = {
> >  	_storagebits, _shift) \
> >  	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
> >  		_storagebits, _shift, NULL, IIO_VOLTAGE, \
> > +		BIT(IIO_CHAN_INFO_SCALE), \
> >  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> >  
> >  #define AD7793_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
> >  	_storagebits, _shift) \
> >  	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
> >  		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
> > +		BIT(IIO_CHAN_INFO_SCALE), \
> >  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> >  
> >  #define AD7793_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \
> >  	__AD7793_CHANNEL(_si, 0, -1, _address, _bits, \
> >  		_storagebits, _shift, NULL, IIO_TEMP, \
> > +		0, \
> >  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> >  
> >  #define AD7793_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits,
> > \
> >  	_shift) \
> >  	__AD7793_CHANNEL(_si, _channel, -1, _address, _bits, \
> >  		_storagebits, _shift, "supply", IIO_VOLTAGE, \
> > +		0, \
> > +		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> > +
> > +#define AD7797_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
> > +	_storagebits, _shift) \
> > +	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
> > +		_storagebits, _shift, NULL, IIO_VOLTAGE, \
> > +		0, \
> > +		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> > +
> > +#define AD7797_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
> > +	_storagebits, _shift) \
> > +	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
> > +		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
> > +		0, \
> >  		BIT(IIO_CHAN_INFO_SAMP_FREQ))
> >  
> >  #define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \
> > @@ -620,8 +639,8 @@ const struct iio_chan_spec _name##_channels[] = { \
> >  
> >  #define DECLARE_AD7797_CHANNELS(_name, _b, _sb) \
> >  const struct iio_chan_spec _name##_channels[] = { \
> > -	AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
> > -	AD7793_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
> > +	AD7797_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
> > +	AD7797_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
> >  	AD7793_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \
> >  	AD7793_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
> >  	IIO_CHAN_SOFT_TIMESTAMP(4), \

Patch
diff mbox series

diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index 5592ae573e6b..7005bde50a76 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -354,29 +354,28 @@  static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
 static IIO_CONST_ATTR_NAMED(sampling_frequency_available_ad7797,
 	sampling_frequency_available, "123 62 50 33 17 16 12 10 8 6 4");
 
-static ssize_t ad7793_show_scale_available(struct device *dev,
-			struct device_attribute *attr, char *buf)
+static int ad7793_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct ad7793_state *st = iio_priv(indio_dev);
-	int i, len = 0;
 
-	for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
-		len += sprintf(buf + len, "%d.%09u ", st->scale_avail[i][0],
-			       st->scale_avail[i][1]);
-
-	len += sprintf(buf + len, "\n");
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = (int *)st->scale_avail;
+		*type = IIO_VAL_INT_PLUS_NANO;
+		/* Values are stored in a 2D matrix  */
+		*length = ARRAY_SIZE(st->scale_avail) * 2;
 
-	return len;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
 }
 
-static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available,
-		in_voltage-voltage_scale_available, S_IRUGO,
-		ad7793_show_scale_available, NULL, 0);
-
 static struct attribute *ad7793_attributes[] = {
 	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
-	&iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
 	NULL
 };
 
@@ -534,6 +533,7 @@  static const struct iio_info ad7793_info = {
 	.read_raw = &ad7793_read_raw,
 	.write_raw = &ad7793_write_raw,
 	.write_raw_get_fmt = &ad7793_write_raw_get_fmt,
+	.read_avail = ad7793_read_avail,
 	.attrs = &ad7793_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
 };
@@ -547,7 +547,7 @@  static const struct iio_info ad7797_info = {
 };
 
 #define __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
-	_storagebits, _shift, _extend_name, _type, _mask_all) \
+	_storagebits, _shift, _extend_name, _type, _mask_type_av, _mask_all) \
 	{ \
 		.type = (_type), \
 		.differential = (_channel2 == -1 ? 0 : 1), \
@@ -559,6 +559,7 @@  static const struct iio_info ad7797_info = {
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
 			BIT(IIO_CHAN_INFO_OFFSET), \
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_type_available = (_mask_type_av), \
 		.info_mask_shared_by_all = _mask_all, \
 		.scan_index = (_si), \
 		.scan_type = { \
@@ -574,23 +575,41 @@  static const struct iio_info ad7797_info = {
 	_storagebits, _shift) \
 	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
 		_storagebits, _shift, NULL, IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SCALE), \
 		BIT(IIO_CHAN_INFO_SAMP_FREQ))
 
 #define AD7793_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
 	_storagebits, _shift) \
 	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
 		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SCALE), \
 		BIT(IIO_CHAN_INFO_SAMP_FREQ))
 
 #define AD7793_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \
 	__AD7793_CHANNEL(_si, 0, -1, _address, _bits, \
 		_storagebits, _shift, NULL, IIO_TEMP, \
+		0, \
 		BIT(IIO_CHAN_INFO_SAMP_FREQ))
 
 #define AD7793_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
 	_shift) \
 	__AD7793_CHANNEL(_si, _channel, -1, _address, _bits, \
 		_storagebits, _shift, "supply", IIO_VOLTAGE, \
+		0, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7797_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+		_storagebits, _shift, NULL, IIO_VOLTAGE, \
+		0, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7797_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
+		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
+		0, \
 		BIT(IIO_CHAN_INFO_SAMP_FREQ))
 
 #define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \
@@ -620,8 +639,8 @@  const struct iio_chan_spec _name##_channels[] = { \
 
 #define DECLARE_AD7797_CHANNELS(_name, _b, _sb) \
 const struct iio_chan_spec _name##_channels[] = { \
-	AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
-	AD7793_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
+	AD7797_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
+	AD7797_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
 	AD7793_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \
 	AD7793_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
 	IIO_CHAN_SOFT_TIMESTAMP(4), \