Hi Mario,
Thanks for your review.
On 2021/1/13 1:54, Limonciello, Mario wrote:
-----Original Message-----
From: Yuan, Perry <Perry_Yuan@xxxxxxxx>
Sent: Tuesday, January 12, 2021 11:18
To: oder_chiou@xxxxxxxxxxx; perex@xxxxxxxx; tiwai@xxxxxxxx;
hdegoede@xxxxxxxxxx; mgross@xxxxxxxxxxxxxxx
Cc: lgirdwood@xxxxxxxxx; broonie@xxxxxxxxxx; alsa-devel@xxxxxxxxxxxxxxxx;
linux-kernel@xxxxxxxxxxxxxxx; platform-driver-x86@xxxxxxxxxxxxxxx; Yuan,
Perry; Limonciello, Mario
Subject: [PATCH v3 2/3] x86/platform/dell-privacy-wmi: add document for dell
privacy driver
From: Perry Yuan <perry_yuan@xxxxxxxx>
Describe the Dell Privacy feature capabilities and devices
state class exposed by BIOS
Signed-off-by: Perry Yuan <perry_yuan@xxxxxxxx>
---
.../testing/sysfs-platform-dell-privacy-wmi | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi
I don't see a reason that the documentation needs to come in it's own commit.
In v4, I would think this can collapse as part of:
"Add support for Dell hardware privacy"
Agreed. will merge this patch content to "Add support for Dell hardware
privacy"
diff --git a/Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi
b/Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi
new file mode 100644
index 000000000000..3dbc2d25b60e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi
@@ -0,0 +1,31 @@
+What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-
D3AB0A901919/devices_supported
+Date: Jan 2021
+KernelVersion: 5.11
I think this is 5.12 material now.
Need to update this to approximate 5.12 date.
+Contact: "perry_yuan@xxxxxxxx>"
I think Dell addresses publicly use a period rather than an underscore, no?
So shouldn't this be perry.yuan@xxxxxxxx? (Although I acknowledge it's an
alias, I don't trust that I/T wouldn't remove that some day).
changed using period for the mail address.
+Description:
+ Display which dell hardware level privacy devices are supported
+ “Dell Privacy” is a set of HW, FW, and SW features to enhance
+ Dell’s commitment to platform privacy for MIC, Camera, and
+ ePrivacy screens.
+ The supported privacy haredware privacy devices are:
You have a typo here.
will fix this in V4.
+ * 0x0 - None,
+ * 0x1 - Microphone,
+ * 0x2 - Camera,
+ * 0x4 - ePrivacy Screen
So this is an bitmap encoded in the integer? I think that needs to be mentioned
in the documentation.
Indeed it is a bitmap , will change this part as below in V4.
What:
/sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/devices_supported
Date: Jan 2021
-KernelVersion: 5.11
-Contact: "perry_yuan@xxxxxxxx>"
+KernelVersion: 5.12
+Contact: "perry.yuan@xxxxxxxx>"
Description:
Display which dell hardware level privacy devices are
supported
“Dell Privacy” is a set of HW, FW, and SW features to
enhance
Dell’s commitment to platform privacy for MIC, Camera, and
ePrivacy screens.
- The supported privacy haredware privacy devices are:
- * 0x0 - None,
- * 0x1 - Microphone,
- * 0x2 - Camera,
- * 0x4 - ePrivacy Screen
+ The supported hardware privacy devices are:
+ - 0 = Not Supported
+ - 1 = Supported
+ - Bit0 -> Microphone
+ - Bit1 -> Camera
+ - Bit2 -> ePrivacy Screen
+
+What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-
D3AB0A901919/current_state
+Date: Jan 2021
+KernelVersion: 5.11
+Contact: "perry_yuan@xxxxxxxx>"
+Description:
+ Allow user space to check current dell privacy device state.
+ Describes the Device State class exposed by BIOS which can be
+ consumed by various applications interested in knowing the Privacy
+ feature capabilities
+ There are three Bits for available states:
+ * 0 -> Off
+ * 1 -> On
+ * Bit0 -> Microphone
+ * Bit1 -> Camera
+ * Bit2 -> ePrivacyScreen
+
--
2.25.1
