From patchwork Fri Mar 12 12:48:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda X-Patchwork-Id: 399127 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9032C4332E for ; Fri, 12 Mar 2021 12:49:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B190B64FA8 for ; Fri, 12 Mar 2021 12:49:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231493AbhCLMtK (ORCPT ); Fri, 12 Mar 2021 07:49:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231201AbhCLMsk (ORCPT ); Fri, 12 Mar 2021 07:48:40 -0500 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7C89C0613DA for ; Fri, 12 Mar 2021 04:48:39 -0800 (PST) Received: by mail-ed1-x536.google.com with SMTP id h13so7765265eds.5 for ; Fri, 12 Mar 2021 04:48:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=uJUFMDUrv2jROjfxSGUILeBWQY1iVXAsm473JYZVW/8=; b=awn8SlTJNll/RMKx8D80PGU+z3tbFcFSNk5l4sfiKDrpJJ7wl2NaRFy1oeKi7SkWt6 beoeU1mUKkqnUGOVEBoW5hWF5/uEs2Bo4yi/VhaqqPlYKdKTUmR2OozYCYu+9IiLnBR+ yJPq0sRB9Qtn3MqjSomcMBVdu8P4T7mLW9mS4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=uJUFMDUrv2jROjfxSGUILeBWQY1iVXAsm473JYZVW/8=; b=DGu4r80mUC5PQe6ExLH3nIzKFSKrx62KQ7WEABkeX1GlmYrEgNoVCQx/7rTuurreq7 WYyBOnrXNc5anQHDI/jW18pJcrsyLx0Rg6pzouRRopWIQZAOW0uZVh+URoLAVTYx6ZTr BfrpBccnETOqE48+9JTw98XzI9B69w0DeAFaHgU5zOMqCnLo+VcGPP9nfOfLeLKLbYcU cH0I6mnwX3Tu1+iDN26IFEFHvekodCVF1ftTeb0KpyD6Gi19DA1B1yWvP9pOHei1y6YG D09lDwqEPDXPfw2ps5TyHAi5J/7eJ8x+ZlXOBdqp7XZf73IV40N7pug0sVECgYmOrbMt 4iyg== X-Gm-Message-State: AOAM530xKsB/JwC8iGa1x/22xecfVZTZFimePtv2UBaj9SwopCuk53m/ A4XgrDr2qMRM7Y64zfw+hF0CXw== X-Google-Smtp-Source: ABdhPJyof4RRzVq9/TKHJPGuakFrVzw8loNfLDiWj5/1ovN8F2TRPmsMzXXR51b58vmNEnS7zHH3bw== X-Received: by 2002:a05:6402:6ca:: with SMTP id n10mr14045936edy.312.1615553318310; Fri, 12 Mar 2021 04:48:38 -0800 (PST) Received: from alco.lan ([80.71.134.83]) by smtp.gmail.com with ESMTPSA id t6sm2924402edq.48.2021.03.12.04.48.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Mar 2021 04:48:38 -0800 (PST) From: Ricardo Ribalda To: Laurent Pinchart , Mauro Carvalho Chehab , Tomasz Figa , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, senozhatsky@chromium.org, Hans Verkuil Cc: Hans Verkuil Subject: [PATCH v3 8/8] uvc: use vb2 ioctl and fop helpers Date: Fri, 12 Mar 2021 13:48:30 +0100 Message-Id: <20210312124830.1344255-9-ribalda@chromium.org> X-Mailer: git-send-email 2.31.0.rc2.261.g7f71774620-goog In-Reply-To: <20210312124830.1344255-1-ribalda@chromium.org> References: <20210312124830.1344255-1-ribalda@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Hans Verkuil When uvc was written the vb2 ioctl and file operation helpers didn't exist. This patch switches uvc over to those helpers, which removes a lot of boilerplate code and simplifies VIDIOC_G/S_PRIORITY handling and allows us to drop the 'privileges' scheme, since that's now handled inside the vb2 helpers. This makes it possible for uvc to pass the v4l2-compliance streaming tests. Signed-off-by: Hans Verkuil --- drivers/media/usb/uvc/uvc_driver.c | 7 +- drivers/media/usb/uvc/uvc_metadata.c | 8 +- drivers/media/usb/uvc/uvc_queue.c | 131 ------------- drivers/media/usb/uvc/uvc_v4l2.c | 272 ++------------------------- drivers/media/usb/uvc/uvcvideo.h | 28 --- 5 files changed, 24 insertions(+), 422 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 6c928e708615..b9f3984e9f80 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -1911,7 +1911,6 @@ static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) INIT_LIST_HEAD(&chain->entities); mutex_init(&chain->ctrl_mutex); chain->dev = dev; - v4l2_prio_init(&chain->prio); return chain; } @@ -2194,7 +2193,7 @@ int uvc_register_video_device(struct uvc_device *dev, vdev->fops = fops; vdev->ioctl_ops = ioctl_ops; vdev->release = uvc_release; - vdev->prio = &stream->chain->prio; + vdev->queue = &queue->queue; if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) vdev->vfl_dir = VFL_DIR_TX; else @@ -2560,8 +2559,8 @@ static int __uvc_resume(struct usb_interface *intf, int reset) if (stream->intf == intf) { ret = uvc_video_resume(stream, reset); if (ret < 0) - uvc_queue_streamoff(&stream->queue, - stream->queue.queue.type); + vb2_streamoff(&stream->queue.queue, + stream->queue.queue.type); return ret; } } diff --git a/drivers/media/usb/uvc/uvc_metadata.c b/drivers/media/usb/uvc/uvc_metadata.c index b6279ad7ac84..2f52cdc62929 100644 --- a/drivers/media/usb/uvc/uvc_metadata.c +++ b/drivers/media/usb/uvc/uvc_metadata.c @@ -96,7 +96,7 @@ static int uvc_meta_v4l2_set_format(struct file *file, void *fh, */ mutex_lock(&stream->mutex); - if (uvc_queue_allocated(&stream->queue)) + if (vb2_is_busy(&stream->queue.queue)) ret = -EBUSY; else stream->meta.format = fmt->dataformat; @@ -164,12 +164,6 @@ int uvc_meta_register(struct uvc_streaming *stream) stream->meta.format = V4L2_META_FMT_UVC; - /* - * The video interface queue uses manual locking and thus does not set - * the queue pointer. Set it manually here. - */ - vdev->queue = &queue->queue; - return uvc_register_video_device(dev, stream, vdev, queue, V4L2_BUF_TYPE_META_CAPTURE, &uvc_meta_fops, &uvc_meta_ioctl_ops); diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c index 21a907d32bb7..fba9646c8ba5 100644 --- a/drivers/media/usb/uvc/uvc_queue.c +++ b/drivers/media/usb/uvc/uvc_queue.c @@ -247,115 +247,10 @@ int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type, return 0; } -void uvc_queue_release(struct uvc_video_queue *queue) -{ - mutex_lock(&queue->mutex); - vb2_queue_release(&queue->queue); - mutex_unlock(&queue->mutex); -} - /* ----------------------------------------------------------------------------- * V4L2 queue operations */ -int uvc_request_buffers(struct uvc_video_queue *queue, - struct v4l2_requestbuffers *rb) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_reqbufs(&queue->queue, rb); - mutex_unlock(&queue->mutex); - - return ret ? ret : rb->count; -} - -int uvc_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_querybuf(&queue->queue, buf); - mutex_unlock(&queue->mutex); - - return ret; -} - -int uvc_create_buffers(struct uvc_video_queue *queue, - struct v4l2_create_buffers *cb) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_create_bufs(&queue->queue, cb); - mutex_unlock(&queue->mutex); - - return ret; -} - -int uvc_queue_buffer(struct uvc_video_queue *queue, - struct media_device *mdev, struct v4l2_buffer *buf) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_qbuf(&queue->queue, mdev, buf); - mutex_unlock(&queue->mutex); - - return ret; -} - -int uvc_export_buffer(struct uvc_video_queue *queue, - struct v4l2_exportbuffer *exp) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_expbuf(&queue->queue, exp); - mutex_unlock(&queue->mutex); - - return ret; -} - -int uvc_dequeue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf, - int nonblocking) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_dqbuf(&queue->queue, buf, nonblocking); - mutex_unlock(&queue->mutex); - - return ret; -} - -int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_streamon(&queue->queue, type); - mutex_unlock(&queue->mutex); - - return ret; -} - -int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type) -{ - int ret; - - mutex_lock(&queue->mutex); - ret = vb2_streamoff(&queue->queue, type); - mutex_unlock(&queue->mutex); - - return ret; -} - -int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma) -{ - return vb2_mmap(&queue->queue, vma); -} - #ifndef CONFIG_MMU unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue, unsigned long pgoff) @@ -364,36 +259,10 @@ unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue, } #endif -__poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, - poll_table *wait) -{ - __poll_t ret; - - mutex_lock(&queue->mutex); - ret = vb2_poll(&queue->queue, file, wait); - mutex_unlock(&queue->mutex); - - return ret; -} - /* ----------------------------------------------------------------------------- * */ -/* - * Check if buffers have been allocated. - */ -int uvc_queue_allocated(struct uvc_video_queue *queue) -{ - int allocated; - - mutex_lock(&queue->mutex); - allocated = vb2_is_busy(&queue->queue); - mutex_unlock(&queue->mutex); - - return allocated; -} - /* * Cancel the video buffers queue. * diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 36eb48622d48..5a4b192ddecf 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -346,17 +346,13 @@ static int uvc_v4l2_set_format(struct uvc_streaming *stream, return ret; mutex_lock(&stream->mutex); - - if (uvc_queue_allocated(&stream->queue)) { + if (vb2_is_busy(&stream->queue.queue)) { ret = -EBUSY; - goto done; + } else { + stream->ctrl = probe; + stream->cur_format = format; + stream->cur_frame = frame; } - - stream->ctrl = probe; - stream->cur_format = format; - stream->cur_frame = frame; - -done: mutex_unlock(&stream->mutex); return ret; } @@ -483,62 +479,6 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream, return 0; } -/* ------------------------------------------------------------------------ - * Privilege management - */ - -/* - * Privilege management is the multiple-open implementation basis. The current - * implementation is completely transparent for the end-user and doesn't - * require explicit use of the VIDIOC_G_PRIORITY and VIDIOC_S_PRIORITY ioctls. - * Those ioctls enable finer control on the device (by making possible for a - * user to request exclusive access to a device), but are not mature yet. - * Switching to the V4L2 priority mechanism might be considered in the future - * if this situation changes. - * - * Each open instance of a UVC device can either be in a privileged or - * unprivileged state. Only a single instance can be in a privileged state at - * a given time. Trying to perform an operation that requires privileges will - * automatically acquire the required privileges if possible, or return -EBUSY - * otherwise. Privileges are dismissed when closing the instance or when - * freeing the video buffers using VIDIOC_REQBUFS. - * - * Operations that require privileges are: - * - * - VIDIOC_S_INPUT - * - VIDIOC_S_PARM - * - VIDIOC_S_FMT - * - VIDIOC_REQBUFS - */ -static int uvc_acquire_privileges(struct uvc_fh *handle) -{ - /* Always succeed if the handle is already privileged. */ - if (handle->state == UVC_HANDLE_ACTIVE) - return 0; - - /* Check if the device already has a privileged handle. */ - if (atomic_inc_return(&handle->stream->active) != 1) { - atomic_dec(&handle->stream->active); - return -EBUSY; - } - - handle->state = UVC_HANDLE_ACTIVE; - return 0; -} - -static void uvc_dismiss_privileges(struct uvc_fh *handle) -{ - if (handle->state == UVC_HANDLE_ACTIVE) - atomic_dec(&handle->stream->active); - - handle->state = UVC_HANDLE_PASSIVE; -} - -static int uvc_has_privileges(struct uvc_fh *handle) -{ - return handle->state == UVC_HANDLE_ACTIVE; -} - /* ------------------------------------------------------------------------ * V4L2 file operations */ @@ -581,7 +521,6 @@ static int uvc_v4l2_open(struct file *file) v4l2_fh_add(&handle->vfh); handle->chain = stream->chain; handle->stream = stream; - handle->state = UVC_HANDLE_PASSIVE; file->private_data = handle; return 0; @@ -594,15 +533,8 @@ static int uvc_v4l2_release(struct file *file) uvc_dbg(stream->dev, CALLS, "%s\n", __func__); - /* Only free resources if this is a privileged handle. */ - if (uvc_has_privileges(handle)) - uvc_queue_release(&stream->queue); - /* Release the file handle. */ - uvc_dismiss_privileges(handle); - v4l2_fh_del(&handle->vfh); - v4l2_fh_exit(&handle->vfh); - kfree(handle); + vb2_fop_release(file); file->private_data = NULL; mutex_lock(&stream->dev->lock); @@ -696,11 +628,6 @@ static int uvc_ioctl_s_fmt_vid_cap(struct file *file, void *fh, { struct uvc_fh *handle = fh; struct uvc_streaming *stream = handle->stream; - int ret; - - ret = uvc_acquire_privileges(handle); - if (ret < 0) - return ret; return uvc_v4l2_set_format(stream, fmt); } @@ -710,11 +637,6 @@ static int uvc_ioctl_s_fmt_vid_out(struct file *file, void *fh, { struct uvc_fh *handle = fh; struct uvc_streaming *stream = handle->stream; - int ret; - - ret = uvc_acquire_privileges(handle); - if (ret < 0) - return ret; return uvc_v4l2_set_format(stream, fmt); } @@ -739,124 +661,6 @@ static int uvc_ioctl_try_fmt_vid_out(struct file *file, void *fh, return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL); } -static int uvc_ioctl_reqbufs(struct file *file, void *fh, - struct v4l2_requestbuffers *rb) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - int ret; - - ret = uvc_acquire_privileges(handle); - if (ret < 0) - return ret; - - mutex_lock(&stream->mutex); - ret = uvc_request_buffers(&stream->queue, rb); - mutex_unlock(&stream->mutex); - if (ret < 0) - return ret; - - if (ret == 0) - uvc_dismiss_privileges(handle); - - return 0; -} - -static int uvc_ioctl_querybuf(struct file *file, void *fh, - struct v4l2_buffer *buf) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - - if (!uvc_has_privileges(handle)) - return -EBUSY; - - return uvc_query_buffer(&stream->queue, buf); -} - -static int uvc_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - - if (!uvc_has_privileges(handle)) - return -EBUSY; - - return uvc_queue_buffer(&stream->queue, - stream->vdev.v4l2_dev->mdev, buf); -} - -static int uvc_ioctl_expbuf(struct file *file, void *fh, - struct v4l2_exportbuffer *exp) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - - if (!uvc_has_privileges(handle)) - return -EBUSY; - - return uvc_export_buffer(&stream->queue, exp); -} - -static int uvc_ioctl_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - - if (!uvc_has_privileges(handle)) - return -EBUSY; - - return uvc_dequeue_buffer(&stream->queue, buf, - file->f_flags & O_NONBLOCK); -} - -static int uvc_ioctl_create_bufs(struct file *file, void *fh, - struct v4l2_create_buffers *cb) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - int ret; - - ret = uvc_acquire_privileges(handle); - if (ret < 0) - return ret; - - return uvc_create_buffers(&stream->queue, cb); -} - -static int uvc_ioctl_streamon(struct file *file, void *fh, - enum v4l2_buf_type type) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - int ret; - - if (!uvc_has_privileges(handle)) - return -EBUSY; - - mutex_lock(&stream->mutex); - ret = uvc_queue_streamon(&stream->queue, type); - mutex_unlock(&stream->mutex); - - return ret; -} - -static int uvc_ioctl_streamoff(struct file *file, void *fh, - enum v4l2_buf_type type) -{ - struct uvc_fh *handle = fh; - struct uvc_streaming *stream = handle->stream; - - if (!uvc_has_privileges(handle)) - return -EBUSY; - - mutex_lock(&stream->mutex); - uvc_queue_streamoff(&stream->queue, type); - mutex_unlock(&stream->mutex); - - return 0; -} - static int uvc_ioctl_enum_input(struct file *file, void *fh, struct v4l2_input *input) { @@ -924,13 +728,12 @@ static int uvc_ioctl_g_input(struct file *file, void *fh, unsigned int *input) static int uvc_ioctl_s_input(struct file *file, void *fh, unsigned int input) { struct uvc_fh *handle = fh; + struct uvc_streaming *stream = handle->stream; struct uvc_video_chain *chain = handle->chain; - int ret; u32 i; - ret = uvc_acquire_privileges(handle); - if (ret < 0) - return ret; + if (vb2_is_busy(&stream->queue.queue)) + return -EBUSY; if (chain->selector == NULL || (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) { @@ -1191,11 +994,6 @@ static int uvc_ioctl_s_parm(struct file *file, void *fh, { struct uvc_fh *handle = fh; struct uvc_streaming *stream = handle->stream; - int ret; - - ret = uvc_acquire_privileges(handle); - if (ret < 0) - return ret; return uvc_v4l2_set_streamparm(stream, parm); } @@ -1463,36 +1261,6 @@ static long uvc_v4l2_compat_ioctl32(struct file *file, } #endif -static ssize_t uvc_v4l2_read(struct file *file, char __user *data, - size_t count, loff_t *ppos) -{ - struct uvc_fh *handle = file->private_data; - struct uvc_streaming *stream = handle->stream; - - uvc_dbg(stream->dev, CALLS, "%s: not implemented\n", __func__); - return -EINVAL; -} - -static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct uvc_fh *handle = file->private_data; - struct uvc_streaming *stream = handle->stream; - - uvc_dbg(stream->dev, CALLS, "%s\n", __func__); - - return uvc_queue_mmap(&stream->queue, vma); -} - -static __poll_t uvc_v4l2_poll(struct file *file, poll_table *wait) -{ - struct uvc_fh *handle = file->private_data; - struct uvc_streaming *stream = handle->stream; - - uvc_dbg(stream->dev, CALLS, "%s\n", __func__); - - return uvc_queue_poll(&stream->queue, file, wait); -} - #ifndef CONFIG_MMU static unsigned long uvc_v4l2_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, @@ -1517,14 +1285,15 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = { .vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt_vid_out, .vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt_vid_cap, .vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt_vid_out, - .vidioc_reqbufs = uvc_ioctl_reqbufs, - .vidioc_querybuf = uvc_ioctl_querybuf, - .vidioc_qbuf = uvc_ioctl_qbuf, - .vidioc_expbuf = uvc_ioctl_expbuf, - .vidioc_dqbuf = uvc_ioctl_dqbuf, - .vidioc_create_bufs = uvc_ioctl_create_bufs, - .vidioc_streamon = uvc_ioctl_streamon, - .vidioc_streamoff = uvc_ioctl_streamoff, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, .vidioc_enum_input = uvc_ioctl_enum_input, .vidioc_g_input = uvc_ioctl_g_input, .vidioc_s_input = uvc_ioctl_s_input, @@ -1554,9 +1323,8 @@ const struct v4l2_file_operations uvc_fops = { #ifdef CONFIG_COMPAT .compat_ioctl32 = uvc_v4l2_compat_ioctl32, #endif - .read = uvc_v4l2_read, - .mmap = uvc_v4l2_mmap, - .poll = uvc_v4l2_poll, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll, #ifndef CONFIG_MMU .get_unmapped_area = uvc_v4l2_get_unmapped_area, #endif diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 1f17e4253673..b478bb6efab5 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -478,7 +478,6 @@ struct uvc_video_chain { struct mutex ctrl_mutex; /* Protects ctrl.info */ - struct v4l2_prio_state prio; /* V4L2 priority state */ u32 caps; /* V4L2 chain-wide caps */ u8 ctrl_class_bitmap; /* Bitmap of valid classes */ }; @@ -715,16 +714,10 @@ struct uvc_device { struct uvc_entity *gpio_unit; }; -enum uvc_handle_state { - UVC_HANDLE_PASSIVE = 0, - UVC_HANDLE_ACTIVE = 1, -}; - struct uvc_fh { struct v4l2_fh vfh; struct uvc_video_chain *chain; struct uvc_streaming *stream; - enum uvc_handle_state state; }; struct uvc_driver { @@ -789,36 +782,15 @@ struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id); /* Video buffers queue management. */ int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type, int drop_corrupted); -void uvc_queue_release(struct uvc_video_queue *queue); -int uvc_request_buffers(struct uvc_video_queue *queue, - struct v4l2_requestbuffers *rb); -int uvc_query_buffer(struct uvc_video_queue *queue, - struct v4l2_buffer *v4l2_buf); -int uvc_create_buffers(struct uvc_video_queue *queue, - struct v4l2_create_buffers *v4l2_cb); -int uvc_queue_buffer(struct uvc_video_queue *queue, - struct media_device *mdev, - struct v4l2_buffer *v4l2_buf); -int uvc_export_buffer(struct uvc_video_queue *queue, - struct v4l2_exportbuffer *exp); -int uvc_dequeue_buffer(struct uvc_video_queue *queue, - struct v4l2_buffer *v4l2_buf, int nonblocking); -int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type); -int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type); void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect); struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, struct uvc_buffer *buf); struct uvc_buffer *uvc_queue_get_current_buffer(struct uvc_video_queue *queue); void uvc_queue_buffer_release(struct uvc_buffer *buf); -int uvc_queue_mmap(struct uvc_video_queue *queue, - struct vm_area_struct *vma); -__poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, - poll_table *wait); #ifndef CONFIG_MMU unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue, unsigned long pgoff); #endif -int uvc_queue_allocated(struct uvc_video_queue *queue); static inline int uvc_queue_streaming(struct uvc_video_queue *queue) { return vb2_is_streaming(&queue->queue);