The iio_simple_dummy_configure_buffer() function is essentially a
re-implementation of the iio_triggered_buffer_setup() function.
This change makes use of the iio_triggered_buffer_setup() function. The
reason is so that we don't have to modify the iio_device_attach_buffer()
function in this driver as well.
One minor drawback is that the pollfunc name may not be 100% identical
with the one in the original code, but since it's an example, it should be
a big problem.
This change does a minor re-arranging of the included iio headers, as a
minor tidy-up.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
---
drivers/iio/dummy/iio_simple_dummy_buffer.c | 68 ++-------------------
1 file changed, 6 insertions(+), 62 deletions(-)
diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c
index 5512d5edc707..59aa60d4ca37 100644
--- a/drivers/iio/dummy/iio_simple_dummy_buffer.c
+++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c
@@ -16,9 +16,9 @@
#include <linux/bitmap.h>
#include <linux/iio/iio.h>
-#include <linux/iio/trigger_consumer.h>
#include <linux/iio/buffer.h>
-#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
#include "iio_simple_dummy.h"
@@ -103,64 +103,9 @@ static const struct iio_buffer_setup_ops iio_simple_dummy_buffer_setup_ops = {
int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
{
- int ret;
- struct iio_buffer *buffer;
-
- /* Allocate a buffer to use - here a kfifo */
- buffer = iio_kfifo_allocate();
- if (!buffer) {
- ret = -ENOMEM;
- goto error_ret;
- }
-
- iio_device_attach_buffer(indio_dev, buffer);
-
- /*
- * Tell the core what device type specific functions should
- * be run on either side of buffer capture enable / disable.
- */
- indio_dev->setup_ops = &iio_simple_dummy_buffer_setup_ops;
-
- /*
- * Configure a polling function.
- * When a trigger event with this polling function connected
- * occurs, this function is run. Typically this grabs data
- * from the device.
- *
- * NULL for the bottom half. This is normally implemented only if we
- * either want to ping a capture now pin (no sleeping) or grab
- * a timestamp as close as possible to a data ready trigger firing.
- *
- * IRQF_ONESHOT ensures irqs are masked such that only one instance
- * of the handler can run at a time.
- *
- * "iio_simple_dummy_consumer%d" formatting string for the irq 'name'
- * as seen under /proc/interrupts. Remaining parameters as per printk.
- */
- indio_dev->pollfunc = iio_alloc_pollfunc(NULL,
- &iio_simple_dummy_trigger_h,
- IRQF_ONESHOT,
- indio_dev,
- "iio_simple_dummy_consumer%d",
- indio_dev->id);
-
- if (!indio_dev->pollfunc) {
- ret = -ENOMEM;
- goto error_free_buffer;
- }
-
- /*
- * Notify the core that this device is capable of buffered capture
- * driven by a trigger.
- */
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
-
- return 0;
-
-error_free_buffer:
- iio_kfifo_free(indio_dev->buffer);
-error_ret:
- return ret;
+ return iio_triggered_buffer_setup(indio_dev, NULL,
+ iio_simple_dummy_trigger_h,
+ &iio_simple_dummy_buffer_setup_ops);
}
/**
@@ -169,6 +114,5 @@ int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
*/
void iio_simple_dummy_unconfigure_buffer(struct iio_dev *indio_dev)
{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_kfifo_free(indio_dev->buffer);
+ iio_triggered_buffer_cleanup(indio_dev);
}
--
2.17.1
