From patchwork Wed Nov 9 06:06:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunke Cao X-Patchwork-Id: 87252 X-Patchwork-Delegate: laurent.pinchart@ideasonboard.com Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1oseF9-0025ZJ-4r; Wed, 09 Nov 2022 06:07:23 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229611AbiKIGHW (ORCPT + 1 other); Wed, 9 Nov 2022 01:07:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229610AbiKIGHV (ORCPT ); Wed, 9 Nov 2022 01:07:21 -0500 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A50991F611 for ; Tue, 8 Nov 2022 22:07:20 -0800 (PST) Received: by mail-pl1-x649.google.com with SMTP id n12-20020a170902e54c00b00188515e81a6so12892275plf.23 for ; Tue, 08 Nov 2022 22:07:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=mi4l24lJfLDD9V/+lKUVEe1U8N/qXPDU0Q2hl6vlRXs=; b=m7csTZorgASyqZySAS6uE9II4b6X5/NbO7LVaz5A3/fC7PvqiVxVC+ToNa6dgB2Ymp lcwpLRokxFMj6dNZSpj61etuI5Dakmeia6Q+yvg5XuZYSxqhdesf7uqW6C1bxCYbzPzg WwMSUdVBz4G6OU8pEy8zoeqTmcK3gABltvLxozeRdaAIJyFLArck7TZkB/dJ8yNGKw5j eva3QeEHzsdpndp9fy72COYWOeCerihZ1hiXpCnUTlHQWpkt3qSrJhkx9KknTVqUMAII 9i+ZkOs7zAioGjP3OPSBNneAWhcl7BvFOhZyodlpFYQaHBW8Fwjv9pRJgLOt4Jb8dPm4 DJfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=mi4l24lJfLDD9V/+lKUVEe1U8N/qXPDU0Q2hl6vlRXs=; b=CF/k5dkUWQcddkGJK5Bb3bDScuQriF3SEG9I9yteBwyQHHV35ePPWYG0Igf5rncENb qDMRlxsNoaOqgKy5LiUvbuCCRiaCh37KHwEzwIDdVJFW6S/k6VH6zL3JuYfbPT5Jlk+r r2Csk4b65Nz+DQ/VXqAeNShHgthDEWwxW1cjAbn0EtoG2o4I/moL9Pg4+bTddP60Yupw +/QIuN5qLbIJ0wHgvQ4pQdmP1tfJOeEQPJxyf1rD+V2TSV3QiEQuz/wodE4MfqhQYQ8D DJw734+KJj+/qogCxGk8+CdO0/3tKGY+gEhR4Eg9orIdr3bPmqrZosS+E3r6LlrYynVZ UuhQ== X-Gm-Message-State: ACrzQf2d8E7at1HyDpqlROzJp1SWMuOOHzqBuS361SLkFIQh+rE9pXi4 DdMIPHuX7j2+MdGY9Jn/ACRC6obFO/g= X-Google-Smtp-Source: AMsMyM6jsyrwv5RvYeFqJD5vz65Hms2wxufu6CwlwfMIx3MtWeHV4YF269fF3NWaNzN849STmbHxRVln4Sc= X-Received: from yunkec1.tok.corp.google.com ([2401:fa00:8f:203:124f:15d3:a305:3dbf]) (user=yunkec job=sendgmr) by 2002:a62:79d4:0:b0:561:f3bb:878 with SMTP id u203-20020a6279d4000000b00561f3bb0878mr1145200pfc.83.1667974040221; Tue, 08 Nov 2022 22:07:20 -0800 (PST) Date: Wed, 9 Nov 2022 15:06:20 +0900 In-Reply-To: <20221109060621.704531-1-yunkec@google.com> Mime-Version: 1.0 References: <20221109060621.704531-1-yunkec@google.com> X-Mailer: git-send-email 2.38.1.431.g37b22c650d-goog Message-ID: <20221109060621.704531-11-yunkec@google.com> Subject: [PATCH v10 10/11] media: uvcvideo: support V4L2_CTRL_WHICH_MIN/MAX_VAL From: Yunke Cao To: Hans Verkuil , Laurent Pinchart Cc: Tomasz Figa , Sergey Senozhatsky , Ricardo Ribalda , linux-media@vger.kernel.org, Yunke Cao X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -10.0 (----------) X-LSpam-Report: No, score=-10.0 required=5.0 tests=BAYES_00=-1.9,DKIMWL_WL_MED=0.001,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,USER_IN_DEF_DKIM_WL=-7.5 autolearn=ham autolearn_force=no Add support for V4L2_CTRL_WHICH_MIN/MAX_VAL in uvc driver. It is useful for the V4L2_CID_UVC_REGION_OF_INTEREST_RECT control. Signed-off-by: Yunke Cao Reviewed-by: Ricardo Ribalda --- Changelog since v9: - Revert a change in v7 that causes v4l2-compliance failure: - In uvc_ioctl_g_ext_ctrls(), when v4l2_which is not V4L2_CTRL_WHICH_*_VAL, - treat it the same as cur instead of returning EINVAL. This is the existing - behavior. - The change in v7 of returning EINVAL fails the check in - v4l2-compliance/v4l2-test-controls.cpp#L834. Changelog since v8: - No change. Changelog since v7: - Address some comments. drivers/media/usb/uvc/uvc_ctrl.c | 44 +++++++++++++++++++++++++++----- drivers/media/usb/uvc/uvc_v4l2.c | 7 +++-- drivers/media/usb/uvc/uvcvideo.h | 3 ++- 3 files changed, 44 insertions(+), 10 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index cba31ee36fed..0cb74a1e80f7 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -1985,19 +1985,47 @@ static int __uvc_ctrl_get_boundary_std(struct uvc_video_chain *chain, if (ret < 0) return ret; - xctrl->value = qc.default_value; + switch (v4l2_which) { + case V4L2_CTRL_WHICH_DEF_VAL: + xctrl->value = qc.default_value; + break; + case V4L2_CTRL_WHICH_MIN_VAL: + xctrl->value = qc.minimum; + break; + case V4L2_CTRL_WHICH_MAX_VAL: + xctrl->value = qc.maximum; + break; + } + return 0; } static int __uvc_ctrl_get_boundary_compound(struct uvc_video_chain *chain, struct uvc_control *ctrl, struct uvc_control_mapping *mapping, + u32 v4l2_which, struct v4l2_ext_control *xctrl) { + u32 flag, id; int ret; - if (!uvc_ctrl_mapping_is_compound(mapping)) - return -EINVAL; + switch (v4l2_which) { + case V4L2_CTRL_WHICH_DEF_VAL: + flag = UVC_CTRL_FLAG_GET_DEF; + id = UVC_CTRL_DATA_DEF; + break; + case V4L2_CTRL_WHICH_MIN_VAL: + flag = UVC_CTRL_FLAG_GET_MIN; + id = UVC_CTRL_DATA_MIN; + break; + case V4L2_CTRL_WHICH_MAX_VAL: + flag = UVC_CTRL_FLAG_GET_MAX; + id = UVC_CTRL_DATA_MAX; + break; + } + + if (!(ctrl->info.flags & flag) && flag != UVC_CTRL_FLAG_GET_DEF) + return -EACCES; if (!ctrl->cached) { ret = uvc_ctrl_populate_cache(chain, ctrl); @@ -2005,11 +2033,11 @@ static int __uvc_ctrl_get_boundary_compound(struct uvc_video_chain *chain, return ret; } - return __uvc_ctrl_get_compound(mapping, ctrl, UVC_CTRL_DATA_DEF, xctrl); + return __uvc_ctrl_get_compound(mapping, ctrl, id, xctrl); } int uvc_ctrl_get_boundary(struct uvc_video_chain *chain, - struct v4l2_ext_control *xctrl) + struct v4l2_ext_control *xctrl, u32 v4l2_which) { struct uvc_control *ctrl; struct uvc_control_mapping *mapping; @@ -2026,9 +2054,11 @@ int uvc_ctrl_get_boundary(struct uvc_video_chain *chain, if (uvc_ctrl_mapping_is_compound(mapping)) ret = __uvc_ctrl_get_boundary_compound(chain, ctrl, mapping, - xctrl); + v4l2_which, xctrl); else - ret = __uvc_ctrl_get_boundary_std(chain, ctrl, mapping, xctrl); + ret = __uvc_ctrl_get_boundary_std(chain, ctrl, mapping, + v4l2_which, xctrl); + done: mutex_unlock(&chain->ctrl_mutex); diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 52a7dc9ad4b9..494ce646eb4b 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -1047,9 +1047,12 @@ static int uvc_ioctl_g_ext_ctrls(struct file *file, void *fh, if (ret < 0) return ret; - if (ctrls->which == V4L2_CTRL_WHICH_DEF_VAL) { + switch (ctrls->which) { + case V4L2_CTRL_WHICH_DEF_VAL: + case V4L2_CTRL_WHICH_MIN_VAL: + case V4L2_CTRL_WHICH_MAX_VAL: for (i = 0; i < ctrls->count; ++ctrl, ++i) { - ret = uvc_ctrl_get_boundary(chain, ctrl); + ret = uvc_ctrl_get_boundary(chain, ctrl, ctrls->which); if (ret < 0) { ctrls->error_idx = i; return ret; diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index c7d20333ca8a..5c3b4ce85615 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -778,7 +778,8 @@ static inline int uvc_ctrl_rollback(struct uvc_fh *handle) int uvc_ctrl_get(struct uvc_video_chain *chain, struct v4l2_ext_control *xctrl); int uvc_ctrl_get_boundary(struct uvc_video_chain *chain, - struct v4l2_ext_control *xctrl); + struct v4l2_ext_control *xctrl, + u32 v4l2_which); int uvc_ctrl_set(struct uvc_fh *handle, struct v4l2_ext_control *xctrl); int uvc_ctrl_is_accessible(struct uvc_video_chain *chain, u32 v4l2_id, bool read);