diff mbox series

[v10,1/8] iio: backend: add API for interface get

Message ID 20250117130702.22588-2-antoniu.miclaus@analog.com (mailing list archive)
State New
Headers show
Series Add support for AD485x DAS Family | expand

Commit Message

Antoniu Miclaus Jan. 17, 2025, 1:06 p.m. UTC 
Add backend support for obtaining the interface type used.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
no changes in v10.
 drivers/iio/industrialio-backend.c | 24 ++++++++++++++++++++++++
 include/linux/iio/backend.h        | 11 +++++++++++
 2 files changed, 35 insertions(+)

Comments

Nuno Sá Jan. 17, 2025, 4:08 p.m. UTC | #1 
On Fri, 2025-01-17 at 15:06 +0200, Antoniu Miclaus wrote:
> Add backend support for obtaining the interface type used.
> 
> Reviewed-by: David Lechner <dlechner@baylibre.com>
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
> ---

Reviewed-by: Nuno Sa <nuno.sa@analog.com>

> no changes in v10.
>  drivers/iio/industrialio-backend.c | 24 ++++++++++++++++++++++++
>  include/linux/iio/backend.h        | 11 +++++++++++
>  2 files changed, 35 insertions(+)
> 
> diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-
> backend.c
> index 363281272035..8bf3d570da1b 100644
> --- a/drivers/iio/industrialio-backend.c
> +++ b/drivers/iio/industrialio-backend.c
> @@ -636,6 +636,30 @@ ssize_t iio_backend_ext_info_set(struct iio_dev
> *indio_dev, uintptr_t private,
>  }
>  EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, "IIO_BACKEND");
>  
> +/**
> + * iio_backend_interface_type_get - get the interface type used.
> + * @back: Backend device
> + * @type: Interface type
> + *
> + * RETURNS:
> + * 0 on success, negative error number on failure.
> + */
> +int iio_backend_interface_type_get(struct iio_backend *back,
> +				   enum iio_backend_interface_type *type)
> +{
> +	int ret;
> +
> +	ret = iio_backend_op_call(back, interface_type_get, type);
> +	if (ret)
> +		return ret;
> +
> +	if (*type >= IIO_BACKEND_INTERFACE_MAX)
> +		return -EINVAL;
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL_NS_GPL(iio_backend_interface_type_get, "IIO_BACKEND");
> +
>  /**
>   * iio_backend_extend_chan_spec - Extend an IIO channel
>   * @back: Backend device
> diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h
> index 10be00f3b120..a0ea6c29d7ba 100644
> --- a/include/linux/iio/backend.h
> +++ b/include/linux/iio/backend.h
> @@ -70,6 +70,12 @@ enum iio_backend_sample_trigger {
>  	IIO_BACKEND_SAMPLE_TRIGGER_MAX
>  };
>  
> +enum iio_backend_interface_type {
> +	IIO_BACKEND_INTERFACE_SERIAL_LVDS,
> +	IIO_BACKEND_INTERFACE_SERIAL_CMOS,
> +	IIO_BACKEND_INTERFACE_MAX
> +};
> +
>  /**
>   * struct iio_backend_ops - operations structure for an iio_backend
>   * @enable: Enable backend.
> @@ -88,6 +94,7 @@ enum iio_backend_sample_trigger {
>   * @extend_chan_spec: Extend an IIO channel.
>   * @ext_info_set: Extended info setter.
>   * @ext_info_get: Extended info getter.
> + * @interface_type_get: Interface type.
>   * @read_raw: Read a channel attribute from a backend device
>   * @debugfs_print_chan_status: Print channel status into a buffer.
>   * @debugfs_reg_access: Read or write register value of backend.
> @@ -128,6 +135,8 @@ struct iio_backend_ops {
>  			    const char *buf, size_t len);
>  	int (*ext_info_get)(struct iio_backend *back, uintptr_t private,
>  			    const struct iio_chan_spec *chan, char *buf);
> +	int (*interface_type_get)(struct iio_backend *back,
> +				  enum iio_backend_interface_type *type);
>  	int (*read_raw)(struct iio_backend *back,
>  			struct iio_chan_spec const *chan, int *val, int
> *val2,
>  			long mask);
> @@ -186,6 +195,8 @@ ssize_t iio_backend_ext_info_set(struct iio_dev
> *indio_dev, uintptr_t private,
>  				 const char *buf, size_t len);
>  ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t
> private,
>  				 const struct iio_chan_spec *chan, char
> *buf);
> +int iio_backend_interface_type_get(struct iio_backend *back,
> +				   enum iio_backend_interface_type *type);
>  int iio_backend_read_raw(struct iio_backend *back,
>  			 struct iio_chan_spec const *chan, int *val, int
> *val2,
>  			 long mask);
diff mbox series

Patch

diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c
index 363281272035..8bf3d570da1b 100644
--- a/drivers/iio/industrialio-backend.c
+++ b/drivers/iio/industrialio-backend.c
@@ -636,6 +636,30 @@  ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private,
 }
 EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, "IIO_BACKEND");
 
+/**
+ * iio_backend_interface_type_get - get the interface type used.
+ * @back: Backend device
+ * @type: Interface type
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+int iio_backend_interface_type_get(struct iio_backend *back,
+				   enum iio_backend_interface_type *type)
+{
+	int ret;
+
+	ret = iio_backend_op_call(back, interface_type_get, type);
+	if (ret)
+		return ret;
+
+	if (*type >= IIO_BACKEND_INTERFACE_MAX)
+		return -EINVAL;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(iio_backend_interface_type_get, "IIO_BACKEND");
+
 /**
  * iio_backend_extend_chan_spec - Extend an IIO channel
  * @back: Backend device
diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h
index 10be00f3b120..a0ea6c29d7ba 100644
--- a/include/linux/iio/backend.h
+++ b/include/linux/iio/backend.h
@@ -70,6 +70,12 @@  enum iio_backend_sample_trigger {
 	IIO_BACKEND_SAMPLE_TRIGGER_MAX
 };
 
+enum iio_backend_interface_type {
+	IIO_BACKEND_INTERFACE_SERIAL_LVDS,
+	IIO_BACKEND_INTERFACE_SERIAL_CMOS,
+	IIO_BACKEND_INTERFACE_MAX
+};
+
 /**
  * struct iio_backend_ops - operations structure for an iio_backend
  * @enable: Enable backend.
@@ -88,6 +94,7 @@  enum iio_backend_sample_trigger {
  * @extend_chan_spec: Extend an IIO channel.
  * @ext_info_set: Extended info setter.
  * @ext_info_get: Extended info getter.
+ * @interface_type_get: Interface type.
  * @read_raw: Read a channel attribute from a backend device
  * @debugfs_print_chan_status: Print channel status into a buffer.
  * @debugfs_reg_access: Read or write register value of backend.
@@ -128,6 +135,8 @@  struct iio_backend_ops {
 			    const char *buf, size_t len);
 	int (*ext_info_get)(struct iio_backend *back, uintptr_t private,
 			    const struct iio_chan_spec *chan, char *buf);
+	int (*interface_type_get)(struct iio_backend *back,
+				  enum iio_backend_interface_type *type);
 	int (*read_raw)(struct iio_backend *back,
 			struct iio_chan_spec const *chan, int *val, int *val2,
 			long mask);
@@ -186,6 +195,8 @@  ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private,
 				 const char *buf, size_t len);
 ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private,
 				 const struct iio_chan_spec *chan, char *buf);
+int iio_backend_interface_type_get(struct iio_backend *back,
+				   enum iio_backend_interface_type *type);
 int iio_backend_read_raw(struct iio_backend *back,
 			 struct iio_chan_spec const *chan, int *val, int *val2,
 			 long mask);