linux-stable.git/include/linux/iio/backend.h, branch v6.15 Linux kernel stable tree iio: backend: add API for oversampling 2025-02-16T15:12:11+00:00 Antoniu Miclaus antoniu.miclaus@analog.com 2025-02-14T13:19:49+00:00 22894e0be908791e3df011cdfac02589c2f340bd Add backend support for setting oversampling ratio. Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://patch.msgid.link/20250214131955.31973-4-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Add backend support for setting oversampling ratio.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-4-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: backend: add support for data size set 2025-02-16T15:11:55+00:00 Antoniu Miclaus antoniu.miclaus@analog.com 2025-02-14T13:19:48+00:00 fc3fdb835eebb2ba88c6fdbf2c8b9eae1ceab106 Add backend support for setting the data size used. This setting can be adjusted within the IP cores interfacing devices. Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://patch.msgid.link/20250214131955.31973-3-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Add backend support for setting the data size used.
This setting can be adjusted within the IP cores interfacing devices.

Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-3-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: backend: add API for interface get 2025-02-16T15:11:25+00:00 Antoniu Miclaus antoniu.miclaus@analog.com 2025-02-14T13:19:47+00:00 4018ab42636cbea1bcf4fd69afc31d51cd905ba0 Add backend support for obtaining the interface type used. Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://patch.msgid.link/20250214131955.31973-2-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Add backend support for obtaining the interface type used.

Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-2-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: backend: extend features 2024-11-01T14:54:48+00:00 Angelo Dureghello adureghello@baylibre.com 2024-10-28T21:45:30+00:00 d3eeb1ac0b99cdcd99420fb270041da946d2d360 Extend backend features with new calls needed later on this patchset from axi version of ad3552r. The follwoing calls are added: iio_backend_ddr_enable() enable ddr bus transfer iio_backend_ddr_disable() disable ddr bus transfer iio_backend_data_stream_enable() enable data stream over bus interface iio_backend_data_stream_disable() disable data stream over bus interface iio_backend_data_transfer_addr() define the target register address where the DAC sample will be written. Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Angelo Dureghello <adureghello@baylibre.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-3-f6960b4f9719@kernel-space.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Extend backend features with new calls needed later on this
patchset from axi version of ad3552r.

The follwoing calls are added:

iio_backend_ddr_enable()
	enable ddr bus transfer
iio_backend_ddr_disable()
	disable ddr bus transfer
iio_backend_data_stream_enable()
	enable data stream over bus interface
iio_backend_data_stream_disable()
	disable data stream over bus interface
iio_backend_data_transfer_addr()
	define the target register address where the DAC sample
	will be written.

Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-3-f6960b4f9719@kernel-space.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: add child nodes support in iio backend framework 2024-08-10T10:17:34+00:00 Olivier Moysan olivier.moysan@foss.st.com 2024-07-30T08:46:33+00:00 c464cc610f51f6eb5f27bf905d4c1ab1896b2725 Add an API to support IIO generic channels binding: http://devicetree.org/schemas/iio/adc/adc.yaml# This new API is needed, as generic channel DT node isn't populated as a device. Add devm_iio_backend_fwnode_get() to allow an IIO device backend consumer to reference backend phandles in its child nodes. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240730084640.1307938-4-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Add an API to support IIO generic channels binding:
http://devicetree.org/schemas/iio/adc/adc.yaml#
This new API is needed, as generic channel DT node isn't populated as a
device.
Add devm_iio_backend_fwnode_get() to allow an IIO device backend
consumer to reference backend phandles in its child nodes.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240730084640.1307938-4-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: add enable and disable services to iio backend framework 2024-08-10T10:17:34+00:00 Olivier Moysan olivier.moysan@foss.st.com 2024-07-30T08:46:32+00:00 2530d7d44ca6dc0c1c059f143cdcb2be8600c59a Add iio_backend_disable() and iio_backend_enable() APIs to allow IIO backend consumer to request backend disabling and enabling. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240730084640.1307938-3-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Add iio_backend_disable() and iio_backend_enable() APIs to allow
IIO backend consumer to request backend disabling and enabling.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240730084640.1307938-3-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: add read scale and offset services to iio backend framework 2024-08-10T10:17:34+00:00 Olivier Moysan olivier.moysan@foss.st.com 2024-07-30T08:46:31+00:00 0737158aabc278526c784f63b8dd8963cdc558a9 Add iio_backend_read_scale() and iio_backend_read_offset() services to read channel scale and offset from an IIO backbend device. Also add a read_raw callback which replicates the read_raw callback of the IIO framework, and is intended to request miscellaneous channel attributes from the backend device. Both scale and offset helpers use this callback. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240730084640.1307938-2-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Add iio_backend_read_scale() and iio_backend_read_offset() services
to read channel scale and offset from an IIO backbend device.

Also add a read_raw callback which replicates the read_raw callback of
the IIO framework, and is intended to request miscellaneous channel
attributes from the backend device.
Both scale and offset helpers use this callback.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240730084640.1307938-2-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: backend: add a modified prbs23 support 2024-08-03T13:36:45+00:00 Nuno Sa nuno.sa@analog.com 2024-08-02T14:27:01+00:00 b001635a7c3014fe7745a507840c5d8f58235c04 Support ADI specific prb23 sequence that can be used both for calibrating or debugging digital interfaces. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-3-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Support ADI specific prb23 sequence that can be used both for
calibrating or debugging digital interfaces.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-3-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: backend: add debugFs interface 2024-08-03T13:36:45+00:00 Nuno Sa nuno.sa@analog.com 2024-08-02T14:27:00+00:00 cdf01e0809a4c6c7877ea52401c2a6679df7aed6 This adds a basic debugfs interface for backends. Two new ops are being added: * debugfs_reg_access: Analogous to the core IIO one but for backend devices. * debugfs_print_chan_status: One useful usecase for this one is for testing test tones in a digital interface and "ask" the backend to dump more details on why a test tone might have errors. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-2-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
This adds a basic debugfs interface for backends. Two new ops are being
added:

 * debugfs_reg_access: Analogous to the core IIO one but for backend
   devices.
 * debugfs_print_chan_status: One useful usecase for this one is for
   testing test tones in a digital interface and "ask" the backend to
   dump more details on why a test tone might have errors.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-2-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: backend: introduce struct iio_backend_info 2024-08-03T13:36:45+00:00 Nuno Sa nuno.sa@analog.com 2024-08-02T14:26:59+00:00 2256f37e24b1979f9a97de0b76cabbf8544a8aff Instead of only passing the backend ops when calling devm_iio_backend_register(), pass an info like structure that will contains the ops and additional information. Fow now, the backend name is being added as that will be used by the debugFS interface introduced in a later patch. It also opens the door for further customizations passed by backends. All users of devm_iio_backend_register() were updated accordingly. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-1-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Instead of only passing the backend ops when calling
devm_iio_backend_register(), pass an info like structure that will
contains the ops and additional information. Fow now, the backend name
is being added as that will be used by the debugFS interface introduced
in a later patch.

It also opens the door for further customizations passed by backends.

All users of devm_iio_backend_register() were updated accordingly.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-1-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>