[PATCH v17 12/12] docs: describe virtio-sound capture options

[Joonho Lee <mynameisjune111@gmail.com>]

Document the five opt-in virtio_snd capture module parameters. State
that capture_allow_empty, capture_allow_short, capture_packed_status and
capture_pause_restart require capture_staging, and use the ALSA kernel
parameter restriction tag for each entry.
Signed-off-by: Joonho Lee <mynameisjune111@gmail.com>

---
Documentation/admin-guide/kernel-parameters.txt |   29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -8344,6 +8344,35 @@
 
 			Can be used multiple times for multiple devices.
 
+	virtio_snd.capture_allow_empty= [HW,ALSA]
+			Retry a bounded number of empty startup capture replies
+			when virtio_snd.capture_staging=1.
+			Format: <bool>
+			Default: false. Validate with the target device.
+
+	virtio_snd.capture_allow_short= [HW,ALSA]
+			Accept non-empty, frame-aligned short capture replies
+			when virtio_snd.capture_staging=1.
+			Format: <bool>
+			Default: false. Validate with the target device.
+
+	virtio_snd.capture_packed_status= [HW,ALSA]
+			Read status immediately after the returned capture data
+			when virtio_snd.capture_staging=1.
+			Format: <bool>
+			Default: false. Validate with the target device.
+
+	virtio_snd.capture_pause_restart= [HW,ALSA]
+			Release and reprepare capture streams across pause when
+			virtio_snd.capture_staging=1.
+			Format: <bool>
+			Default: false. Validate with the target device.
+
+	virtio_snd.capture_staging= [HW,ALSA]
+			Enable staged capture using request-owned buffers.
+			Format: <bool>
+			Default: false. Validate with the target device.
+
 	vga=		[BOOT,X86-32] Select a particular video mode
 			See Documentation/arch/x86/boot.rst and
 			Documentation/admin-guide/svga.rst.