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| author | Nuno Sa <nuno.sa@analog.com> | 2024-08-02 16:27:00 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-08-03 15:36:45 +0200 |
| commit | cdf01e0809a4c6c7877ea52401c2a6679df7aed6 (patch) | |
| tree | 10286bf7a44935dbdd36cc25178858864477b570 /Documentation/ABI | |
| parent | iio: backend: introduce struct iio_backend_info (diff) | |
| download | linux-cdf01e0809a4c6c7877ea52401c2a6679df7aed6.tar.xz linux-cdf01e0809a4c6c7877ea52401c2a6679df7aed6.zip | |
iio: backend: add debugFs interface
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>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-iio-backend | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-iio-backend b/Documentation/ABI/testing/debugfs-iio-backend new file mode 100644 index 000000000000..01ab94469432 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-iio-backend @@ -0,0 +1,20 @@ +What: /sys/kernel/debug/iio/iio:deviceX/backendY/name +KernelVersion: 6.11 +Contact: linux-iio@vger.kernel.org +Description: + Name of Backend Y connected to device X. + +What: /sys/kernel/debug/iio/iio:deviceX/backendY/direct_reg_access +KernelVersion: 6.11 +Contact: linux-iio@vger.kernel.org +Description: + Directly access the registers of backend Y. Typical usage is: + + Reading address 0x50 + echo 0x50 > direct_reg_access + cat direct_reg_access + + Writing address 0x50 + echo 0x50 0x3 > direct_reg_access + //readback address 0x50 + cat direct_reg_access |