From patchwork Fri Mar 6 16:39:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 210731 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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=unavailable 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 A8EABC10DCE for ; Fri, 6 Mar 2020 16:40:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 803D42072A for ; Fri, 6 Mar 2020 16:40:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726646AbgCFQkZ (ORCPT ); Fri, 6 Mar 2020 11:40:25 -0500 Received: from vsp-unauthed02.binero.net ([195.74.38.227]:31366 "EHLO vsp-unauthed02.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726382AbgCFQkY (ORCPT ); Fri, 6 Mar 2020 11:40:24 -0500 X-Halon-ID: 2704960c-5fc9-11ea-aa6d-005056917f90 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (p4fca2392.dip0.t-ipconnect.de [79.202.35.146]) by bin-vsp-out-02.atm.binero.net (Halon) with ESMTPA id 2704960c-5fc9-11ea-aa6d-005056917f90; Fri, 06 Mar 2020 17:40:14 +0100 (CET) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Helen Koike , Hans Verkuil , Sakari Ailus , Laurent Pinchart , linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v4 1/3] v4l2-dev/ioctl: Add V4L2_CAP_IO_MC Date: Fri, 6 Mar 2020 17:39:33 +0100 Message-Id: <20200306163935.805333-2-niklas.soderlund@ragnatech.se> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200306163935.805333-1-niklas.soderlund@ragnatech.se> References: <20200306163935.805333-1-niklas.soderlund@ragnatech.se> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Niklas Söderlund Add a video device capability flag to indicate that its inputs and/or outputs are controlled by the Media Controller instead of the V4L2 API. When this flag is set, ioctl for enum inputs and outputs are automatically enabled and programmed to call a helper function. Suggested-by: Hans Verkuil Signed-off-by: Helen Koike Signed-off-by: Niklas Söderlund --- * Changes since v3 - Update documentation for V4L2_CAP_IO_MC - Only enable VIDIOC_{G,S}_{INPUT,OUTPUT} if V4L2_CAP_IO_MC is set (instead of unconditionally) - Merge v4l2_ioctl_enum_input_mc() into v4l_enuminput() - Merge v4l2_ioctl_enum_output_mc() into v4l_enumoutput() * Changes since v2 - Merged the two patches touching V4L2 core stuff to a single patch. - Updated documentation for V4L2_CAP_IO_MC - Added is_io_mc bool in determine_valid_ioctls() - Folded or moved code closer to where it's used - Remove unneeded memset() - Use strscpy() instead of strlcpy() --- .../media/uapi/v4l/vidioc-querycap.rst | 6 ++ .../media/videodev2.h.rst.exceptions | 1 + drivers/media/v4l2-core/v4l2-dev.c | 25 ++++++-- drivers/media/v4l2-core/v4l2-ioctl.c | 57 +++++++++++++++++-- include/uapi/linux/videodev2.h | 2 + 5 files changed, 81 insertions(+), 10 deletions(-) diff --git a/Documentation/media/uapi/v4l/vidioc-querycap.rst b/Documentation/media/uapi/v4l/vidioc-querycap.rst index 5f9930195d624c73..497a6aa2cbebad71 100644 --- a/Documentation/media/uapi/v4l/vidioc-querycap.rst +++ b/Documentation/media/uapi/v4l/vidioc-querycap.rst @@ -264,6 +264,12 @@ specification the ioctl returns an ``EINVAL`` error code. * - ``V4L2_CAP_TOUCH`` - 0x10000000 - This is a touch device. + * - ``V4L2_CAP_IO_MC`` + - 0x20000000 + - There is only one input and/or output seen from userspace. The whole + video topology configuration, including which I/O entity is routed to + the input/output, is configured by userspace via the Media Controller. + See :ref:`media_controller`. * - ``V4L2_CAP_DEVICE_CAPS`` - 0x80000000 - The driver fills the ``device_caps`` field. This capability can diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions index cb6ccf91776e6b56..a625fb90e3a989a7 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -176,6 +176,7 @@ replace define V4L2_CAP_STREAMING device-capabilities replace define V4L2_CAP_META_OUTPUT device-capabilities replace define V4L2_CAP_DEVICE_CAPS device-capabilities replace define V4L2_CAP_TOUCH device-capabilities +replace define V4L2_CAP_IO_MC device-capabilities # V4L2 pix flags replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format` diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 97b6a3af13614639..a593ea0598b551b4 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -552,6 +552,7 @@ static void determine_valid_ioctls(struct video_device *vdev) (vdev->device_caps & meta_caps); bool is_rx = vdev->vfl_dir != VFL_DIR_TX; bool is_tx = vdev->vfl_dir != VFL_DIR_RX; + bool is_io_mc = vdev->device_caps & V4L2_CAP_IO_MC; bitmap_zero(valid_ioctls, BASE_VIDIOC_PRIVATE); @@ -725,9 +726,15 @@ static void determine_valid_ioctls(struct video_device *vdev) SET_VALID_IOCTL(ops, VIDIOC_G_STD, vidioc_g_std); if (is_rx) { SET_VALID_IOCTL(ops, VIDIOC_QUERYSTD, vidioc_querystd); - SET_VALID_IOCTL(ops, VIDIOC_ENUMINPUT, vidioc_enum_input); - SET_VALID_IOCTL(ops, VIDIOC_G_INPUT, vidioc_g_input); - SET_VALID_IOCTL(ops, VIDIOC_S_INPUT, vidioc_s_input); + if (is_io_mc) { + set_bit(_IOC_NR(VIDIOC_ENUMINPUT), valid_ioctls); + set_bit(_IOC_NR(VIDIOC_G_INPUT), valid_ioctls); + set_bit(_IOC_NR(VIDIOC_S_INPUT), valid_ioctls); + } else { + SET_VALID_IOCTL(ops, VIDIOC_ENUMINPUT, vidioc_enum_input); + SET_VALID_IOCTL(ops, VIDIOC_G_INPUT, vidioc_g_input); + SET_VALID_IOCTL(ops, VIDIOC_S_INPUT, vidioc_s_input); + } SET_VALID_IOCTL(ops, VIDIOC_ENUMAUDIO, vidioc_enumaudio); SET_VALID_IOCTL(ops, VIDIOC_G_AUDIO, vidioc_g_audio); SET_VALID_IOCTL(ops, VIDIOC_S_AUDIO, vidioc_s_audio); @@ -735,9 +742,15 @@ static void determine_valid_ioctls(struct video_device *vdev) SET_VALID_IOCTL(ops, VIDIOC_S_EDID, vidioc_s_edid); } if (is_tx) { - SET_VALID_IOCTL(ops, VIDIOC_ENUMOUTPUT, vidioc_enum_output); - SET_VALID_IOCTL(ops, VIDIOC_G_OUTPUT, vidioc_g_output); - SET_VALID_IOCTL(ops, VIDIOC_S_OUTPUT, vidioc_s_output); + if (is_io_mc) { + set_bit(_IOC_NR(VIDIOC_ENUMOUTPUT), valid_ioctls); + set_bit(_IOC_NR(VIDIOC_G_OUTPUT), valid_ioctls); + set_bit(_IOC_NR(VIDIOC_S_OUTPUT), valid_ioctls); + } else { + SET_VALID_IOCTL(ops, VIDIOC_ENUMOUTPUT, vidioc_enum_output); + SET_VALID_IOCTL(ops, VIDIOC_G_OUTPUT, vidioc_g_output); + SET_VALID_IOCTL(ops, VIDIOC_S_OUTPUT, vidioc_s_output); + } SET_VALID_IOCTL(ops, VIDIOC_ENUMAUDOUT, vidioc_enumaudout); SET_VALID_IOCTL(ops, VIDIOC_G_AUDOUT, vidioc_g_audout); SET_VALID_IOCTL(ops, VIDIOC_S_AUDOUT, vidioc_s_audout); diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index fbcc7a20eedf553a..58e9e728f0a7aa4b 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1085,6 +1085,32 @@ static int v4l_querycap(const struct v4l2_ioctl_ops *ops, return ret; } +static int v4l_g_input(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + + if (vfd->device_caps & V4L2_CAP_IO_MC) { + *(unsigned int *)arg = 0; + return 0; + } + + return ops->vidioc_g_input(file, fh, arg); +} + +static int v4l_g_output(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + + if (vfd->device_caps & V4L2_CAP_IO_MC) { + *(unsigned int *)arg = 0; + return 0; + } + + return ops->vidioc_g_output(file, fh, arg); +} + static int v4l_s_input(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { @@ -1094,12 +1120,21 @@ static int v4l_s_input(const struct v4l2_ioctl_ops *ops, ret = v4l_enable_media_source(vfd); if (ret) return ret; + + if (vfd->device_caps & V4L2_CAP_IO_MC) + return *(unsigned int *)arg ? -EINVAL : 0; + return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); } static int v4l_s_output(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { + struct video_device *vfd = video_devdata(file); + + if (vfd->device_caps & V4L2_CAP_IO_MC) + return *(unsigned int *)arg ? -EINVAL : 0; + return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); } @@ -1143,6 +1178,14 @@ static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, if (is_valid_ioctl(vfd, VIDIOC_S_STD)) p->capabilities |= V4L2_IN_CAP_STD; + if (vfd->device_caps & V4L2_CAP_IO_MC) { + if (p->index) + return -EINVAL; + strscpy(p->name, vfd->name, sizeof(p->name)); + p->type = V4L2_INPUT_TYPE_CAMERA; + return 0; + } + return ops->vidioc_enum_input(file, fh, p); } @@ -1161,6 +1204,14 @@ static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, if (is_valid_ioctl(vfd, VIDIOC_S_STD)) p->capabilities |= V4L2_OUT_CAP_STD; + if (vfd->device_caps & V4L2_CAP_IO_MC) { + if (p->index) + return -EINVAL; + strscpy(p->name, vfd->name, sizeof(p->name)); + p->type = V4L2_OUTPUT_TYPE_ANALOG; + return 0; + } + return ops->vidioc_enum_output(file, fh, p); } @@ -2678,10 +2729,8 @@ DEFINE_V4L_STUB_FUNC(expbuf) DEFINE_V4L_STUB_FUNC(g_std) DEFINE_V4L_STUB_FUNC(g_audio) DEFINE_V4L_STUB_FUNC(s_audio) -DEFINE_V4L_STUB_FUNC(g_input) DEFINE_V4L_STUB_FUNC(g_edid) DEFINE_V4L_STUB_FUNC(s_edid) -DEFINE_V4L_STUB_FUNC(g_output) DEFINE_V4L_STUB_FUNC(g_audout) DEFINE_V4L_STUB_FUNC(s_audout) DEFINE_V4L_STUB_FUNC(g_jpegcomp) @@ -2730,11 +2779,11 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = { IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), - IOCTL_INFO(VIDIOC_G_INPUT, v4l_stub_g_input, v4l_print_u32, 0), + IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), - IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_stub_g_output, v4l_print_u32, 0), + IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 5f9357dcb0602126..c793263a37052856 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -487,6 +487,8 @@ struct v4l2_capability { #define V4L2_CAP_TOUCH 0x10000000 /* Is a touch device */ +#define V4L2_CAP_IO_MC 0x20000000 /* Is input/output controlled by the media controller */ + #define V4L2_CAP_DEVICE_CAPS 0x80000000 /* sets device capabilities field */ /* From patchwork Fri Mar 6 16:39:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 210730 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 77495C10F00 for ; Fri, 6 Mar 2020 16:40:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5A4032072A for ; Fri, 6 Mar 2020 16:40:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726751AbgCFQk0 (ORCPT ); Fri, 6 Mar 2020 11:40:26 -0500 Received: from bin-mail-out-05.binero.net ([195.74.38.228]:31402 "EHLO bin-mail-out-05.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726300AbgCFQkZ (ORCPT ); Fri, 6 Mar 2020 11:40:25 -0500 X-Halon-ID: 28463a20-5fc9-11ea-aa6d-005056917f90 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (p4fca2392.dip0.t-ipconnect.de [79.202.35.146]) by bin-vsp-out-02.atm.binero.net (Halon) with ESMTPA id 28463a20-5fc9-11ea-aa6d-005056917f90; Fri, 06 Mar 2020 17:40:16 +0100 (CET) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Helen Koike , Hans Verkuil , Sakari Ailus , Laurent Pinchart , linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v4 3/3] staging/intel-ipu3: Make use of V4L2_CAP_IO_MC Date: Fri, 6 Mar 2020 17:39:35 +0100 Message-Id: <20200306163935.805333-4-niklas.soderlund@ragnatech.se> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200306163935.805333-1-niklas.soderlund@ragnatech.se> References: <20200306163935.805333-1-niklas.soderlund@ragnatech.se> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Niklas Söderlund Set the V4L2_CAP_IO_MC capability flag and remove the driver specific vidioc_enum_{input,output}, vidioc_g_{input,output} and vidioc_s_{input,output} callbacks. Signed-off-by: Niklas Söderlund --- drivers/staging/media/ipu3/ipu3-v4l2.c | 60 +------------------------- 1 file changed, 2 insertions(+), 58 deletions(-) diff --git a/drivers/staging/media/ipu3/ipu3-v4l2.c b/drivers/staging/media/ipu3/ipu3-v4l2.c index 09c8ede1457cad96..2c42be3d995621e3 100644 --- a/drivers/staging/media/ipu3/ipu3-v4l2.c +++ b/drivers/staging/media/ipu3/ipu3-v4l2.c @@ -845,54 +845,6 @@ static int imgu_vidioc_g_meta_fmt(struct file *file, void *fh, return 0; } -static int imgu_vidioc_enum_input(struct file *file, void *fh, - struct v4l2_input *input) -{ - if (input->index > 0) - return -EINVAL; - strscpy(input->name, "camera", sizeof(input->name)); - input->type = V4L2_INPUT_TYPE_CAMERA; - - return 0; -} - -static int imgu_vidioc_g_input(struct file *file, void *fh, unsigned int *input) -{ - *input = 0; - - return 0; -} - -static int imgu_vidioc_s_input(struct file *file, void *fh, unsigned int input) -{ - return input == 0 ? 0 : -EINVAL; -} - -static int imgu_vidioc_enum_output(struct file *file, void *fh, - struct v4l2_output *output) -{ - if (output->index > 0) - return -EINVAL; - strscpy(output->name, "camera", sizeof(output->name)); - output->type = V4L2_INPUT_TYPE_CAMERA; - - return 0; -} - -static int imgu_vidioc_g_output(struct file *file, void *fh, - unsigned int *output) -{ - *output = 0; - - return 0; -} - -static int imgu_vidioc_s_output(struct file *file, void *fh, - unsigned int output) -{ - return output == 0 ? 0 : -EINVAL; -} - /******************** function pointers ********************/ static struct v4l2_subdev_internal_ops imgu_subdev_internal_ops = { @@ -965,14 +917,6 @@ static const struct v4l2_ioctl_ops imgu_v4l2_ioctl_ops = { .vidioc_s_fmt_vid_out_mplane = imgu_vidioc_s_fmt, .vidioc_try_fmt_vid_out_mplane = imgu_vidioc_try_fmt, - .vidioc_enum_output = imgu_vidioc_enum_output, - .vidioc_g_output = imgu_vidioc_g_output, - .vidioc_s_output = imgu_vidioc_s_output, - - .vidioc_enum_input = imgu_vidioc_enum_input, - .vidioc_g_input = imgu_vidioc_g_input, - .vidioc_s_input = imgu_vidioc_s_input, - /* buffer queue management */ .vidioc_reqbufs = vb2_ioctl_reqbufs, .vidioc_create_bufs = vb2_ioctl_create_bufs, @@ -1062,7 +1006,7 @@ static void imgu_node_to_v4l2(u32 node, struct video_device *vdev, switch (node) { case IMGU_NODE_IN: - cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE; + cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE | V4L2_CAP_IO_MC; f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; vdev->ioctl_ops = &imgu_v4l2_ioctl_ops; break; @@ -1081,7 +1025,7 @@ static void imgu_node_to_v4l2(u32 node, struct video_device *vdev, imgu_css_meta_fmt_set(&f->fmt.meta); break; default: - cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE; + cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_IO_MC; f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; vdev->ioctl_ops = &imgu_v4l2_ioctl_ops; }