From patchwork Mon Nov 11 20:38:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11237699 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A0F26159A for ; Mon, 11 Nov 2019 20:39:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 75A39206BA for ; Mon, 11 Nov 2019 20:39:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727634AbfKKUis (ORCPT ); Mon, 11 Nov 2019 15:38:48 -0500 Received: from mout.kundenserver.de ([212.227.126.187]:40109 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727141AbfKKUir (ORCPT ); Mon, 11 Nov 2019 15:38:47 -0500 Received: from threadripper.lan ([149.172.19.189]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.129]) with ESMTPA (Nemesis) id 1MuVOM-1hdoC52AuQ-00rVLy; Mon, 11 Nov 2019 21:38:39 +0100 From: Arnd Bergmann To: Mauro Carvalho Chehab , linux-media@vger.kernel.org Cc: Hans Verkuil , linux-kernel@vger.kernel.org, y2038@lists.linaro.org, Arnd Bergmann Subject: [PATCH v4 2/8] media: v4l2: abstract timeval handling in v4l2_buffer Date: Mon, 11 Nov 2019 21:38:29 +0100 Message-Id: <20191111203835.2260382-3-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20191111203835.2260382-1-arnd@arndb.de> References: <20191111203835.2260382-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:fREgJFYS5c/Ce1W7NJCe9Mi1leEMqglZPNH2zLJm3ACCD5EBqSs DiL6D0tXQy9xsDvMw2UbMWERCHye/X7V/QBKvLXtgbThbxaPM65ILIHbsvqjp8UeWPKyMfr g3O9+Ntw04O76HB/+wLc4evlZ6yXJv7ZN72xutCJi9fOel6sy+DkxFe0VAe3+L8Qv8mjeJZ iL95JvK5GDI3sBO3ippaA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:eT9LInbvktc=:Jolj81xjQfFEuAUz1T0pgn WBwkR2B98+FlnEbudPfejMmQ+EoXPolujBmtwk9Sx03GNgVSpI85MEoGP4h7JkyJlX9ajQzBz gVOHF2gGT/SeujFxAr3xegiDo0rKZTVn5lq9M/2UtTCrOoNLOi/r+9y0hIAn47enB/XmcC1RZ Iw6j7hJ5lvpzMJc0WAbUMCgOB0v3azL/nR6GNwXAdYJ8ydzAyvjRUux4WMStaVwxXiEI7rI/A scu4Mojmq+dGT33fBQch/BoYqW2cpELNEXuKPLVemYzZ50xTBr2eJKxESs+e2RMM+c9FczKwQ M9/rsuYdsPQPvNQcq4cOoLIvTTqy/4Yarb/xWkieox4TMnGMBR6dzNBC78xwo44+n4xK9hyJk 8tCIbmQT95pbiqhQdFcjcCkn65zwAhzVpMHH2tGsjO9AMs/VFylz32Ec652OZKA6P2lGvPgIR qrYCdkwOQRWqXPSV2FuKyTfl/QUCmW7HLBSHIV9xaRJaqKdhEUO9rSx8Wq8gouagsufitYi6X pk/9OxUEhOT+iA1LrE/XdKvq3KpQcjE7N54AOBWPQERa5aSuLhR30TRQoZSKHaXFKgwE4fjxH SaA5bGMQhzR+QUTnG3NjYlHavT/zl0YfPvZai+31edusW4QphO4ORHhcGDJ7PHxF8kvJ3/HUX u7F9UV4SqgupOpV4bGmg8kTxm++6CezNByp1rsCoyzD8i0s0dE+B8LjNdo+J7VWs/YLL/a7mG nipWylNb1dH7QIYK8UaXDejv0UnAqNFuph1UMWDpdaDWLvlcdOvVGPeeWa7PmGZeie6g9iq3L tfS6hA078F2gpILyFg0eEh/Eo+tgWw88j2nP4YPD356UQn9GDgA956yLkthr0I3+WdIYT2uxC kYD7WTBSacGM5m9EaLlQ== Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org As a preparation for adding 64-bit time_t support in the uapi, change the drivers to no longer care about the format of the timestamp field in struct v4l2_buffer. The v4l2_timeval_to_ns() function is no longer needed in the kernel after this, but there may be userspace code relying on it because it is part of the uapi header. Signed-off-by: Arnd Bergmann --- drivers/media/common/videobuf2/videobuf2-v4l2.c | 4 ++-- drivers/media/pci/meye/meye.c | 4 ++-- drivers/media/usb/cpia2/cpia2_v4l.c | 4 ++-- drivers/media/usb/stkwebcam/stk-webcam.c | 2 +- drivers/media/usb/usbvision/usbvision-video.c | 4 ++-- drivers/media/v4l2-core/videobuf-core.c | 4 ++-- include/linux/videodev2.h | 17 ++++++++++++++++- include/trace/events/v4l2.h | 2 +- include/uapi/linux/videodev2.h | 2 ++ 9 files changed, 30 insertions(+), 13 deletions(-) diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c index 5a9ba3846f0a..9ec710878db6 100644 --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c @@ -143,7 +143,7 @@ static void __copy_timestamp(struct vb2_buffer *vb, const void *pb) * and the timecode field and flag if needed. */ if (q->copy_timestamp) - vb->timestamp = v4l2_timeval_to_ns(&b->timestamp); + vb->timestamp = v4l2_buffer_get_timestamp(b); vbuf->flags |= b->flags & V4L2_BUF_FLAG_TIMECODE; if (b->flags & V4L2_BUF_FLAG_TIMECODE) vbuf->timecode = b->timecode; @@ -476,7 +476,7 @@ static void __fill_v4l2_buffer(struct vb2_buffer *vb, void *pb) b->flags = vbuf->flags; b->field = vbuf->field; - b->timestamp = ns_to_timeval(vb->timestamp); + v4l2_buffer_set_timestamp(b, vb->timestamp); b->timecode = vbuf->timecode; b->sequence = vbuf->sequence; b->reserved2 = 0; diff --git a/drivers/media/pci/meye/meye.c b/drivers/media/pci/meye/meye.c index 0e61c81356ef..3a4c29bc0ba5 100644 --- a/drivers/media/pci/meye/meye.c +++ b/drivers/media/pci/meye/meye.c @@ -1266,7 +1266,7 @@ static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) buf->flags |= V4L2_BUF_FLAG_DONE; buf->field = V4L2_FIELD_NONE; - buf->timestamp = ns_to_timeval(meye.grab_buffer[index].ts); + v4l2_buffer_set_timestamp(buf, meye.grab_buffer[index].ts); buf->sequence = meye.grab_buffer[index].sequence; buf->memory = V4L2_MEMORY_MMAP; buf->m.offset = index * gbufsize; @@ -1332,7 +1332,7 @@ static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) buf->bytesused = meye.grab_buffer[reqnr].size; buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; buf->field = V4L2_FIELD_NONE; - buf->timestamp = ns_to_timeval(meye.grab_buffer[reqnr].ts); + v4l2_buffer_set_timestamp(buf, meye.grab_buffer[reqnr].ts); buf->sequence = meye.grab_buffer[reqnr].sequence; buf->memory = V4L2_MEMORY_MMAP; buf->m.offset = reqnr * gbufsize; diff --git a/drivers/media/usb/cpia2/cpia2_v4l.c b/drivers/media/usb/cpia2/cpia2_v4l.c index 626264a56517..9d3d05125d7b 100644 --- a/drivers/media/usb/cpia2/cpia2_v4l.c +++ b/drivers/media/usb/cpia2/cpia2_v4l.c @@ -800,7 +800,7 @@ static int cpia2_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) break; case FRAME_READY: buf->bytesused = cam->buffers[buf->index].length; - buf->timestamp = ns_to_timeval(cam->buffers[buf->index].ts); + v4l2_buffer_set_timestamp(buf, cam->buffers[buf->index].ts); buf->sequence = cam->buffers[buf->index].seq; buf->flags = V4L2_BUF_FLAG_DONE; break; @@ -907,7 +907,7 @@ static int cpia2_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; buf->field = V4L2_FIELD_NONE; - buf->timestamp = ns_to_timeval(cam->buffers[buf->index].ts); + v4l2_buffer_set_timestamp(buf, cam->buffers[buf->index].ts); buf->sequence = cam->buffers[buf->index].seq; buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer; buf->length = cam->frame_size; diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index 21f90a887485..b22501f76b78 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -1125,7 +1125,7 @@ static int stk_vidioc_dqbuf(struct file *filp, sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED; sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE; sbuf->v4lbuf.sequence = ++dev->sequence; - sbuf->v4lbuf.timestamp = ns_to_timeval(ktime_get_ns()); + v4l2_buffer_set_timestamp(&sbuf->v4lbuf, ktime_get_ns()); *buf = sbuf->v4lbuf; return 0; diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c index cdc66adda755..15a423c5deb7 100644 --- a/drivers/media/usb/usbvision/usbvision-video.c +++ b/drivers/media/usb/usbvision/usbvision-video.c @@ -687,7 +687,7 @@ static int vidioc_querybuf(struct file *file, vb->length = usbvision->curwidth * usbvision->curheight * usbvision->palette.bytes_per_pixel; - vb->timestamp = ns_to_timeval(usbvision->frame[vb->index].ts); + v4l2_buffer_set_timestamp(vb, usbvision->frame[vb->index].ts); vb->sequence = usbvision->frame[vb->index].sequence; return 0; } @@ -756,7 +756,7 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb) V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; vb->index = f->index; vb->sequence = f->sequence; - vb->timestamp = ns_to_timeval(f->ts); + v4l2_buffer_set_timestamp(vb, f->ts); vb->field = V4L2_FIELD_NONE; vb->bytesused = f->scanlength; diff --git a/drivers/media/v4l2-core/videobuf-core.c b/drivers/media/v4l2-core/videobuf-core.c index 939fc11cf080..ab650371c151 100644 --- a/drivers/media/v4l2-core/videobuf-core.c +++ b/drivers/media/v4l2-core/videobuf-core.c @@ -364,7 +364,7 @@ static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b, } b->field = vb->field; - b->timestamp = ns_to_timeval(vb->ts); + v4l2_buffer_set_timestamp(b, vb->ts); b->bytesused = vb->size; b->sequence = vb->field_count >> 1; } @@ -578,7 +578,7 @@ int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b) || q->type == V4L2_BUF_TYPE_SDR_OUTPUT) { buf->size = b->bytesused; buf->field = b->field; - buf->ts = v4l2_timeval_to_ns(&b->timestamp); + buf->ts = v4l2_buffer_get_timestamp(b); } break; case V4L2_MEMORY_USERPTR: diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 16c0ed6c50a7..4086036e37d5 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -56,7 +56,22 @@ #ifndef __LINUX_VIDEODEV2_H #define __LINUX_VIDEODEV2_H -#include /* need struct timeval */ +#include #include +static inline u64 v4l2_buffer_get_timestamp(const struct v4l2_buffer *buf) +{ + return buf->timestamp.tv_sec * NSEC_PER_SEC + + (u32)buf->timestamp.tv_usec * NSEC_PER_USEC; +} + +static inline void v4l2_buffer_set_timestamp(struct v4l2_buffer *buf, + u64 timestamp) +{ + struct timespec64 ts = ns_to_timespec64(timestamp); + + buf->timestamp.tv_sec = ts.tv_sec; + buf->timestamp.tv_usec = ts.tv_nsec / NSEC_PER_USEC; +} + #endif /* __LINUX_VIDEODEV2_H */ diff --git a/include/trace/events/v4l2.h b/include/trace/events/v4l2.h index 83860de120e3..248bc09bfc99 100644 --- a/include/trace/events/v4l2.h +++ b/include/trace/events/v4l2.h @@ -130,7 +130,7 @@ DECLARE_EVENT_CLASS(v4l2_event_class, __entry->bytesused = buf->bytesused; __entry->flags = buf->flags; __entry->field = buf->field; - __entry->timestamp = timeval_to_ns(&buf->timestamp); + __entry->timestamp = v4l2_buffer_get_timestamp(buf); __entry->timecode_type = buf->timecode.type; __entry->timecode_flags = buf->timecode.flags; __entry->timecode_frames = buf->timecode.frames; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 530638dffd93..74d3d522f3db 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1010,6 +1010,7 @@ struct v4l2_buffer { }; }; +#ifndef __KERNEL__ /** * v4l2_timeval_to_ns - Convert timeval to nanoseconds * @ts: pointer to the timeval variable to be converted @@ -1021,6 +1022,7 @@ static inline __u64 v4l2_timeval_to_ns(const struct timeval *tv) { return (__u64)tv->tv_sec * 1000000000ULL + tv->tv_usec * 1000; } +#endif /* Flags for 'flags' field */ /* Buffer is mapped (flag) */