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* [PATCH 1/7] iio: inkern: API for reading available iio channel attribute values
@ 2019-02-17 14:29 Artur Rojek
  2019-02-17 14:29 ` [PATCH 2/7] power: supply: core: Add a field to support battery max voltage Artur Rojek
                   ` (5 more replies)
  0 siblings, 6 replies; 14+ messages in thread
From: Artur Rojek @ 2019-02-17 14:29 UTC (permalink / raw)
  To: Sebastian Reichel, Jonathan Cameron, Rob Herring, Mark Rutland
  Cc: linux-pm, linux-iio, devicetree, linux-kernel, Paul Cercueil,
	Artur Rojek

Extend the inkern API with a function for reading available
attribute values of iio channels.

Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
---
 drivers/iio/inkern.c         | 20 ++++++++++++++++++++
 include/linux/iio/consumer.h | 14 ++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 06ca3f7fcc44..f19dbde3c945 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -733,6 +733,26 @@ static int iio_channel_read_avail(struct iio_channel *chan,
 						 vals, type, length, info);
 }
 
+int iio_read_avail_channel_attribute(struct iio_channel *chan,
+				     const int **vals, int *type, int *length,
+				     enum iio_chan_info_enum attribute)
+{
+	int ret;
+
+	mutex_lock(&chan->indio_dev->info_exist_lock);
+	if (!chan->indio_dev->info) {
+		ret = -ENODEV;
+		goto err_unlock;
+	}
+
+	ret = iio_channel_read_avail(chan, vals, type, length, attribute);
+err_unlock:
+	mutex_unlock(&chan->indio_dev->info_exist_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(iio_read_avail_channel_attribute);
+
 int iio_read_avail_channel_raw(struct iio_channel *chan,
 			       const int **vals, int *length)
 {
diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h
index 9887f4f8e2a8..b2d34831ed7c 100644
--- a/include/linux/iio/consumer.h
+++ b/include/linux/iio/consumer.h
@@ -290,6 +290,20 @@ int iio_read_max_channel_raw(struct iio_channel *chan, int *val);
 int iio_read_avail_channel_raw(struct iio_channel *chan,
 			       const int **vals, int *length);
 
+/**
+ * iio_read_avail_channel_attribute() - read available channel attribute values
+ * @chan:		The channel being queried.
+ * @vals:		Available values read back.
+ * @type:		Type of values read back.
+ * @length:		Number of entries in vals.
+ * @attribute:		info attribute to be read back.
+ *
+ * Returns an error code, IIO_AVAIL_RANGE or IIO_AVAIL_LIST.
+ */
+int iio_read_avail_channel_attribute(struct iio_channel *chan,
+				     const int **vals, int *type, int *length,
+				     enum iio_chan_info_enum attribute);
+
 /**
  * iio_get_channel_type() - get the type of a channel
  * @channel:		The channel being queried.
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 14+ messages in thread
end of thread, other threads:[~2019-03-03 16:53 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-02-17 14:29 [PATCH 1/7] iio: inkern: API for reading available iio channel attribute values Artur Rojek
2019-02-17 14:29 ` [PATCH 2/7] power: supply: core: Add a field to support battery max voltage Artur Rojek
2019-02-17 14:29 ` [PATCH 3/7] dt-bindings: power: supply: Add voltage-max-design-microvolt property Artur Rojek
2019-02-17 14:29 ` [PATCH 4/7] dt-bindings: power: supply: Add docs for Ingenic JZ47xx SoCs battery Artur Rojek
2019-02-28 18:48   ` Rob Herring
2019-02-28 18:56     ` Paul Cercueil
2019-02-28 20:22     ` Artur Rojek
2019-02-17 14:29 ` [PATCH 5/7] power: supply: add Ingenic JZ47xx battery driver Artur Rojek
2019-02-20 11:14   ` Jonathan Cameron
2019-02-20 15:24     ` Artur Rojek
2019-02-21 19:18     ` Artur Rojek
2019-03-03 16:53       ` Jonathan Cameron
2019-02-17 14:37 ` [PATCH 1/7] iio: inkern: API for reading available iio channel attribute values Artur Rojek
2019-02-20 11:14 ` Jonathan Cameron

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