linux-kernel - [PATCH 0/3] usb: gadget: uvc: allocate requests based on frame interval length and buffersize

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Date: Tue, 09 Apr 2024 23:24:56 +0200
From: Michael Grzeschik <m.grzeschik@...gutronix.de>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Daniel Scally <dan.scally@...asonboard.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Michael Grzeschik <m.grzeschik@...gutronix.de>
Subject: [PATCH 0/3] usb: gadget: uvc: allocate requests based on frame
 interval length and buffersize

This patch series is improving the size calculation and allocation
of the uvc requests. Using the currenlty setup frame duration of the
stream it is possible to calculate the number of requests based on the
interval length.

Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
---
Michael Grzeschik (3):
      usb: gadget: function: uvc: set req_size once when the vb2 queue is calculated
      usb: gadget: uvc: add g_parm and s_parm for frame interval
      usb: gadget: uvc: set req_size and n_requests based on the frame interval

 drivers/usb/gadget/function/uvc.h       |  1 +
 drivers/usb/gadget/function/uvc_queue.c | 30 ++++++++++++++-----
 drivers/usb/gadget/function/uvc_v4l2.c  | 52 +++++++++++++++++++++++++++++++++
 drivers/usb/gadget/function/uvc_video.c | 17 ++---------
 4 files changed, 79 insertions(+), 21 deletions(-)
---
base-commit: 3295f1b866bfbcabd625511968e8a5c541f9ab32
change-id: 20240403-uvc_request_length_by_interval-a7efd587d963

Best regards,
-- 
Michael Grzeschik <m.grzeschik@...gutronix.de>