diff options
| author | Nuno Sa <nuno.sa@analog.com> | 2024-02-10 23:57:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-12 12:12:21 +0300 |
| commit | e1fc56c400688b83c63cab73b85b8c4ddf00c20d (patch) | |
| tree | 2f771d4798da75834f16325023b1cc902a09f990 /include | |
| parent | b70042e4dc7fdfbe28d2f518f56aa643d1256b41 (diff) | |
| download | linux-e1fc56c400688b83c63cab73b85b8c4ddf00c20d.tar.xz | |
iio: buffer-dmaengine: export buffer alloc and free functions
[ Upstream commit 9c446288d7b31402adb454535cb2c3cbdb55bb88 ]
Export iio_dmaengine_buffer_free() and iio_dmaengine_buffer_alloc().
This is in preparation of introducing IIO backends support. This will
allow us to allocate a buffer and control it's lifetime from a device
different from the one holding the DMA firmware properties. Effectively,
in this case the struct device holding the firmware information about
the DMA channels is not the same as iio_dev->dev.parent (typical case).
While at it, namespace the buffer-dmaengine exports and update the
current user of these buffers.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240210-iio-backend-v11-4-f5242a5fb42a@analog.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stable-dep-of: cf1c833f89e7 ("iio: adc: adi-axi-adc: only error out in major version mismatch")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iio/buffer-dmaengine.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/iio/buffer-dmaengine.h b/include/linux/iio/buffer-dmaengine.h index 5c355be89814..cbb8ba957fad 100644 --- a/include/linux/iio/buffer-dmaengine.h +++ b/include/linux/iio/buffer-dmaengine.h @@ -10,6 +10,9 @@ struct iio_dev; struct device; +struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev, + const char *channel); +void iio_dmaengine_buffer_free(struct iio_buffer *buffer); int devm_iio_dmaengine_buffer_setup(struct device *dev, struct iio_dev *indio_dev, const char *channel); |