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authorMaximilian Luz <luzmaximilian@gmail.com>2021-06-04 16:47:52 +0300
committerHans de Goede <hdegoede@redhat.com>2021-06-16 18:47:53 +0300
commit776c53c6a448905d8b9b161805b67f82301bfe91 (patch)
tree6e20b63dfca5d775745e8beb31e7a9d89a3a5a81 /Documentation/userspace-api/ioctl
parentb2763358feb28590f6b52a4c95c94a645dadfb26 (diff)
downloadlinux-776c53c6a448905d8b9b161805b67f82301bfe91.tar.xz
platform/surface: aggregator_cdev: Add support for forwarding events to user-space
Currently, debugging unknown events requires writing a custom driver. This is somewhat difficult, slow to adapt, and not entirely user-friendly for quickly trying to figure out things on devices of some third-party user. We can do better. We already have a user-space interface intended for debugging SAM EC requests, so let's add support for receiving events to that. This commit provides support for receiving events by reading from the controller file. It additionally introduces two new IOCTLs to control which event categories will be forwarded. Specifically, a user-space client can specify which target categories it wants to receive events from by registering the corresponding notifier(s) via the IOCTLs and after that, read the received events by reading from the controller device. Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210604134755.535590-5-luzmaximilian@gmail.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'Documentation/userspace-api/ioctl')
-rw-r--r--Documentation/userspace-api/ioctl/ioctl-number.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index 9bfc2b510c64..1409e40e6345 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -325,7 +325,7 @@ Code Seq# Include File Comments
0xA3 90-9F linux/dtlk.h
0xA4 00-1F uapi/linux/tee.h Generic TEE subsystem
0xA4 00-1F uapi/asm/sgx.h <mailto:linux-sgx@vger.kernel.org>
-0xA5 01 linux/surface_aggregator/cdev.h Microsoft Surface Platform System Aggregator
+0xA5 01-05 linux/surface_aggregator/cdev.h Microsoft Surface Platform System Aggregator
<mailto:luzmaximilian@gmail.com>
0xA5 20-2F linux/surface_aggregator/dtx.h Microsoft Surface DTX driver
<mailto:luzmaximilian@gmail.com>