From patchwork Fri Dec 1 07:18:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunke Cao X-Patchwork-Id: 13475492 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="gsS/H0VB" Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44A67131 for ; Thu, 30 Nov 2023 23:19:53 -0800 (PST) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-5d3aa625542so8900897b3.1 for ; Thu, 30 Nov 2023 23:19:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1701415192; x=1702019992; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=6C8SekB8YyvZgxsUdlghH361DxPsL2oozd53z2vxk+4=; b=gsS/H0VBbwjngOj14YHGzgSNWJCjbQbIYZMeFZTwS1NHKaIGTz8DPrczLf0TZoGyto 6+eEkqkFPyrGKg6QN57CxWb3po9/W/8bSDzsP0m5k/T70lCodp+ctz64vLpI8MvoWQYZ IZabzCTFZLJ3IBBt6DN/MGuHBrnCXT09WFLJHFWRXudRaRXHIYa8j46CSvToWk1QZfG3 8IUBZgZmbDmnFjGptgM1VQ/jG1anzDqb5mWkpDchnkSsCv7VH0mGrnJx1jOylHM5Wv1N IdxApoeYFZRDpfuEOVR8w07huNmFQvxD6Q+4dDcwNPY1cfU6a1ka4WMUd/70/F1KlZNd VjLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701415192; x=1702019992; 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=6C8SekB8YyvZgxsUdlghH361DxPsL2oozd53z2vxk+4=; b=rhpvosQrqQK1hpeYxUW1EsWSKFnwqpkZilGpEQiERF/ZCmHikPK98Jd4HAa0TIrx/j LnXDNJugFvOJ5IpEQrdzJXcaI7VnWiWd7CmSRaybVAXy1dfK8zpcrBZwuY/EXX7Ew8Jo UhhHHFAv6WJ4FSv0GllWcNmUR6HF4e6kHwGJxQx/qhkkRZt7kioFmTTqD/v6oke5rmsX G2Rb2HnkHflTdsLdhrLphf18TpczPfqZMA7AVPaYB3tyr7ccKGEGapxAnIUEJR5ilY8W T2sTh+po86JJZ91vqJamgOOgN/pvWvEK02hulns5x/fSchtSz8reJm76UqM53Xen996A o1Vw== X-Gm-Message-State: AOJu0YzsVd1FtKQlbuxJa8sP1hDK375Xt9GVh8IO0vAwqduTQx8eXM1W C593VQitbT8zi2H9zxh+TXExcxhaUX4= X-Google-Smtp-Source: AGHT+IGmiOOm1zwviJl1YGNmcqk2bY50idlimoXK/vsqiOJkyMtsIxdUXeQBsbqb6iBfbBhz7yDOHooPB38= X-Received: from yunkec1.tok.corp.google.com ([2401:fa00:8f:203:ea68:7c7a:2356:8a4a]) (user=yunkec job=sendgmr) by 2002:a81:fe03:0:b0:5c1:4b36:85bf with SMTP id j3-20020a81fe03000000b005c14b3685bfmr1062710ywn.1.1701415192576; Thu, 30 Nov 2023 23:19:52 -0800 (PST) Date: Fri, 1 Dec 2023 16:18:59 +0900 In-Reply-To: <20231201071907.3080126-1-yunkec@google.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20231201071907.3080126-1-yunkec@google.com> X-Mailer: git-send-email 2.43.0.rc2.451.g8631bc7472-goog Message-ID: <20231201071907.3080126-9-yunkec@google.com> Subject: [PATCH v14 08/11] media: uvcvideo: support V4L2_CTRL_WHICH_MIN/MAX_VAL From: Yunke Cao To: Hans Verkuil , Laurent Pinchart , Daniel Scally Cc: Tomasz Figa , Sergey Senozhatsky , Ricardo Ribalda , linux-media@vger.kernel.org, Yunke Cao 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. Reviewed-by: Ricardo Ribalda Reviewed-by: Sergey Senozhatsky Signed-off-by: Yunke Cao --- Changelog since v11: - No change. Changelog since v10: - Added Reviewed-by from Sergey. 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 | 64 +++++++++++++++++++++++++++----- drivers/media/usb/uvc/uvc_v4l2.c | 7 +++- drivers/media/usb/uvc/uvcvideo.h | 3 +- 3 files changed, 61 insertions(+), 13 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index aae2480496b7..c073c2a02102 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -1247,11 +1247,18 @@ int uvc_ctrl_is_accessible(struct uvc_video_chain *chain, u32 v4l2_id, if (!ctrl) return -EINVAL; - if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) && read) - return -EACCES; - - if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR) && !read) - return -EACCES; + if (read) { + if (ctrls->which == V4L2_CTRL_WHICH_MIN_VAL || + ctrls->which == V4L2_CTRL_WHICH_MAX_VAL) { + if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) || + !(ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX)) + return -EINVAL; + } else if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) + return -EACCES; + } else { + if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) + return -EACCES; + } if (ioctl != VIDIOC_S_EXT_CTRLS || !mapping->master_id) return 0; @@ -1332,6 +1339,9 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain, v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY; if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; + if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) && + (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN)) + v4l2_ctrl->flags |= V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX; if (mapping->master_id) __uvc_find_control(ctrl->entity, mapping->master_id, @@ -1981,6 +1991,7 @@ int uvc_ctrl_get(struct uvc_video_chain *chain, static int __uvc_ctrl_get_boundary_std(struct uvc_video_chain *chain, struct uvc_control *ctrl, struct uvc_control_mapping *mapping, + u32 v4l2_which, struct v4l2_ext_control *xctrl) { struct v4l2_queryctrl qc = { .id = xctrl->id }; @@ -1990,28 +2001,59 @@ 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; + 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 -EINVAL; + if (!ctrl->cached) { ret = uvc_ctrl_populate_cache(chain, ctrl); if (ret < 0) 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; @@ -2028,9 +2070,11 @@ 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 ff72caf7bc9e..352f62ef02f2 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -1094,9 +1094,12 @@ 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 11805b729c22..6fda40919e7f 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -790,7 +790,8 @@ 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, const struct v4l2_ext_controls *ctrls,