[v6,4/8] v4l2-ctl/compliance: Add routing and streams multiplexed streams

Message ID	20230720075044.442021-5-tomi.valkeinen@ideasonboard.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-media-owner@vger.kernel.org> From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> To: linux-media@vger.kernel.org, sakari.ailus@linux.intel.com, Jacopo Mondi <jacopo.mondi@ideasonboard.com>, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, niklas.soderlund+renesas@ragnatech.se, Mauro Carvalho Chehab <mchehab@kernel.org>, Hans Verkuil <hverkuil-cisco@xs4all.nl>, satish.nagireddy@getcruise.com Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Subject: [PATCH v6 4/8] v4l2-ctl/compliance: Add routing and streams multiplexed streams Date: Thu, 20 Jul 2023 10:50:40 +0300 Message-Id: <20230720075044.442021-5-tomi.valkeinen@ideasonboard.com> In-Reply-To: <20230720075044.442021-1-tomi.valkeinen@ideasonboard.com> References: <20230720075044.442021-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	v4l-utils: Support multiplexed streams \| expand [v6,0/8] v4l-utils: Support multiplexed streams [v6,1/8] v4l2-ctl: Improve sub-device options help text [v6,2/8] v4l2-ctl: Add routing and streams support [v6,3/8] media-ctl: Add support for routes and streams [v6,4/8] v4l2-ctl/compliance: Add routing and streams multiplexed streams [v6,5/8] v4l2-ctl/compliance: Add simple routing test [v6,6/8] media-ctl: Check for Streams API support [v6,7/8] utils/common: Set V4L2_SUBDEV_CLIENT_CAP_STREAMS for subdevs [v6,8/8] v4l2-ctl: Check for Streams API support

diff --git a/utils/v4l2-compliance/v4l2-compliance.cpp b/utils/v4l2-compliance/v4l2-compliance.cpp index e3556b1f..e8359b2f 100644 --- a/utils/v4l2-compliance/v4l2-compliance.cpp +++ b/utils/v4l2-compliance/v4l2-compliance.cpp @@ -1233,6 +1233,10 @@ void testNode(struct node &node, struct node &node_m2m_cap, struct node &expbuf_ if (node.is_subdev()) { bool has_source = false; bool has_sink = false; + struct v4l2_subdev_routing sd_routing[2] = {}; + struct v4l2_subdev_route sd_routes[2][NUM_ROUTES_MAX] = {}; + bool has_routes = !!(subdevcap.capabilities & V4L2_SUBDEV_CAP_STREAMS); + int ret; node.frame_interval_pad = -1; node.enum_frame_interval_pad = -1; @@ -1244,6 +1248,22 @@ void testNode(struct node &node, struct node &node_m2m_cap, struct node &expbuf_ } node.is_passthrough_subdev = has_source && has_sink; + if (has_routes) { + for (unsigned which = V4L2_SUBDEV_FORMAT_TRY; + which <= V4L2_SUBDEV_FORMAT_ACTIVE; which++) { + + sd_routing[which].which = which; + sd_routing[which].routes = (__u64)sd_routes[which]; + sd_routing[which].num_routes = NUM_ROUTES_MAX; + + ret = doioctl(&node, VIDIOC_SUBDEV_G_ROUTING, &sd_routing[which]); + if (ret) { + fail("VIDIOC_SUBDEV_G_ROUTING: failed to get routing\n"); + sd_routing[which].num_routes = 0; + } + } + } + for (unsigned pad = 0; pad < node.entity.pads; pad++) { printf("Sub-Device ioctls (%s Pad %u):\n", (node.pads[pad].flags & MEDIA_PAD_FL_SINK) ? @@ -1253,32 +1273,82 @@ void testNode(struct node &node, struct node &node_m2m_cap, struct node &expbuf_ node.has_subdev_enum_fival = 0; for (unsigned which = V4L2_SUBDEV_FORMAT_TRY; which <= V4L2_SUBDEV_FORMAT_ACTIVE; which++) { - printf("\ttest %s VIDIOC_SUBDEV_ENUM_MBUS_CODE/FRAME_SIZE/FRAME_INTERVAL: %s\n", - which ? "Active" : "Try", - ok(testSubDevEnum(&node, which, pad))); - printf("\ttest %s VIDIOC_SUBDEV_G/S_FMT: %s\n", - which ? "Active" : "Try", - ok(testSubDevFormat(&node, which, pad))); - printf("\ttest %s VIDIOC_SUBDEV_G/S_SELECTION/CROP: %s\n", - which ? "Active" : "Try", - ok(testSubDevSelection(&node, which, pad))); - if (which) - printf("\ttest VIDIOC_SUBDEV_G/S_FRAME_INTERVAL: %s\n", - ok(testSubDevFrameInterval(&node, pad))); + struct v4l2_subdev_routing dummy_routing; + struct v4l2_subdev_route dummy_routes[1]; + + const struct v4l2_subdev_routing *routing; + const struct v4l2_subdev_route *routes; + + if (has_routes) { + routing = &sd_routing[which]; + routes = sd_routes[which]; + } else { + dummy_routing.num_routes = 1; + dummy_routing.routes = (__u64)&dummy_routes; + dummy_routes[0].source_pad = pad; + dummy_routes[0].source_stream = 0; + dummy_routes[0].sink_pad = pad; + dummy_routes[0].sink_stream = 0; + dummy_routes[0].flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE; + + routing = &dummy_routing; + routes = dummy_routes; + } + + for (unsigned i = 0; i < routing->num_routes; ++i) { + const struct v4l2_subdev_route *r = &routes[i]; + unsigned stream; + + if (!(r->flags & V4L2_SUBDEV_ROUTE_FL_ACTIVE)) + continue; + + if ((node.pads[pad].flags & MEDIA_PAD_FL_SINK) && + (r->sink_pad == pad)) + stream = r->sink_stream; + else if ((node.pads[pad].flags & MEDIA_PAD_FL_SOURCE) && + (r->source_pad == pad)) + stream = r->source_stream; + else + continue; + + printf("\t%s Stream %u\n",which ? "Active" : "Try", + stream); + + printf("\ttest %s VIDIOC_SUBDEV_ENUM_MBUS_CODE/FRAME_SIZE/FRAME_INTERVAL: %s\n", + which ? "Active" : "Try", + ok(testSubDevEnum(&node, which, pad, stream))); + printf("\ttest %s VIDIOC_SUBDEV_G/S_FMT: %s\n", + which ? "Active" : "Try", + ok(testSubDevFormat(&node, which, pad, stream))); + printf("\ttest %s VIDIOC_SUBDEV_G/S_SELECTION/CROP: %s\n", + which ? "Active" : "Try", + ok(testSubDevSelection(&node, which, pad, stream))); + if (which) + printf("\ttest VIDIOC_SUBDEV_G/S_FRAME_INTERVAL: %s\n", + ok(testSubDevFrameInterval(&node, pad, stream))); + } + } + + /* + * These tests do not make sense for subdevs with multiplexed streams, + * as the try & active cases may have different routing and thus different + * behavior. + */ + if (!has_routes) { + if (node.has_subdev_enum_code && node.has_subdev_enum_code < 3) + fail("VIDIOC_SUBDEV_ENUM_MBUS_CODE: try/active mismatch\n"); + if (node.has_subdev_enum_fsize && node.has_subdev_enum_fsize < 3) + fail("VIDIOC_SUBDEV_ENUM_FRAME_SIZE: try/active mismatch\n"); + if (node.has_subdev_enum_fival && node.has_subdev_enum_fival < 3) + fail("VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: try/active mismatch\n"); + if (node.has_subdev_fmt && node.has_subdev_fmt < 3) + fail("VIDIOC_SUBDEV_G/S_FMT: try/active mismatch\n"); + if (node.has_subdev_selection && node.has_subdev_selection < 3) + fail("VIDIOC_SUBDEV_G/S_SELECTION: try/active mismatch\n"); + if (node.has_subdev_selection && + node.has_subdev_selection != node.has_subdev_fmt) + fail("VIDIOC_SUBDEV_G/S_SELECTION: fmt/selection mismatch\n"); } - if (node.has_subdev_enum_code && node.has_subdev_enum_code < 3) - fail("VIDIOC_SUBDEV_ENUM_MBUS_CODE: try/active mismatch\n"); - if (node.has_subdev_enum_fsize && node.has_subdev_enum_fsize < 3) - fail("VIDIOC_SUBDEV_ENUM_FRAME_SIZE: try/active mismatch\n"); - if (node.has_subdev_enum_fival && node.has_subdev_enum_fival < 3) - fail("VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: try/active mismatch\n"); - if (node.has_subdev_fmt && node.has_subdev_fmt < 3) - fail("VIDIOC_SUBDEV_G/S_FMT: try/active mismatch\n"); - if (node.has_subdev_selection && node.has_subdev_selection < 3) - fail("VIDIOC_SUBDEV_G/S_SELECTION: try/active mismatch\n"); - if (node.has_subdev_selection && - node.has_subdev_selection != node.has_subdev_fmt) - fail("VIDIOC_SUBDEV_G/S_SELECTION: fmt/selection mismatch\n"); printf("\n"); } } diff --git a/utils/v4l2-compliance/v4l2-compliance.h b/utils/v4l2-compliance/v4l2-compliance.h index 88b792cd..0cd43980 100644 --- a/utils/v4l2-compliance/v4l2-compliance.h +++ b/utils/v4l2-compliance/v4l2-compliance.h @@ -371,10 +371,10 @@ int testDecoder(struct node *node); // SubDev ioctl tests int testSubDevCap(struct node *node); -int testSubDevEnum(struct node *node, unsigned which, unsigned pad); -int testSubDevFormat(struct node *node, unsigned which, unsigned pad); -int testSubDevSelection(struct node *node, unsigned which, unsigned pad); -int testSubDevFrameInterval(struct node *node, unsigned pad); +int testSubDevEnum(struct node *node, unsigned which, unsigned pad, unsigned stream); +int testSubDevFormat(struct node *node, unsigned which, unsigned pad, unsigned stream); +int testSubDevSelection(struct node *node, unsigned which, unsigned pad, unsigned stream); +int testSubDevFrameInterval(struct node *node, unsigned pad, unsigned stream); // Buffer ioctl tests int testReqBufs(struct node *node); diff --git a/utils/v4l2-compliance/v4l2-test-subdevs.cpp b/utils/v4l2-compliance/v4l2-test-subdevs.cpp index 27f26576..5545b0dc 100644 --- a/utils/v4l2-compliance/v4l2-test-subdevs.cpp +++ b/utils/v4l2-compliance/v4l2-test-subdevs.cpp @@ -25,7 +25,7 @@ #include "v4l2-compliance.h" -#define VALID_SUBDEV_CAPS (V4L2_SUBDEV_CAP_RO_SUBDEV) +#define VALID_SUBDEV_CAPS (V4L2_SUBDEV_CAP_RO_SUBDEV | V4L2_SUBDEV_CAP_STREAMS) int testSubDevCap(struct node *node) { @@ -54,6 +54,7 @@ static int testSubDevEnumFrameInterval(struct node *node, unsigned which, memset(&fie, 0, sizeof(fie)); fie.which = which; fie.pad = pad; + fie.stream = 0; fie.code = code; fie.width = width; fie.height = height; @@ -83,6 +84,7 @@ static int testSubDevEnumFrameInterval(struct node *node, unsigned which, memset(&fie, 0xff, sizeof(fie)); fie.which = which; fie.pad = pad; + fie.stream = 0; fie.code = code; fie.width = width; fie.height = height; @@ -128,6 +130,7 @@ static int testSubDevEnumFrameSize(struct node *node, unsigned which, memset(&fse, 0, sizeof(fse)); fse.which = which; fse.pad = pad; + fse.stream = 0; fse.code = code; ret = doioctl(node, VIDIOC_SUBDEV_ENUM_FRAME_SIZE, &fse); node->has_subdev_enum_fsize |= (ret != ENOTTY) << which; @@ -137,6 +140,7 @@ static int testSubDevEnumFrameSize(struct node *node, unsigned which, memset(&fie, 0, sizeof(fie)); fie.which = which; fie.pad = pad; + fie.stream = 0; fie.code = code; fail_on_test(doioctl(node, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, &fie) != ENOTTY); return ret; @@ -152,6 +156,7 @@ static int testSubDevEnumFrameSize(struct node *node, unsigned which, memset(&fse, 0xff, sizeof(fse)); fse.which = which; fse.pad = pad; + fse.stream = 0; fse.code = code; fse.index = 0; fail_on_test(doioctl(node, VIDIOC_SUBDEV_ENUM_FRAME_SIZE, &fse)); @@ -195,7 +200,7 @@ static int testSubDevEnumFrameSize(struct node *node, unsigned which, return 0; } -int testSubDevEnum(struct node *node, unsigned which, unsigned pad) +int testSubDevEnum(struct node *node, unsigned which, unsigned pad, unsigned stream) { struct v4l2_subdev_mbus_code_enum mbus_core_enum; unsigned num_codes; @@ -204,6 +209,7 @@ int testSubDevEnum(struct node *node, unsigned which, unsigned pad) memset(&mbus_core_enum, 0, sizeof(mbus_core_enum)); mbus_core_enum.which = which; mbus_core_enum.pad = pad; + mbus_core_enum.stream = stream; ret = doioctl(node, VIDIOC_SUBDEV_ENUM_MBUS_CODE, &mbus_core_enum); node->has_subdev_enum_code |= (ret != ENOTTY) << which; if (ret == ENOTTY) { @@ -214,8 +220,10 @@ int testSubDevEnum(struct node *node, unsigned which, unsigned pad) memset(&fie, 0, sizeof(fie)); fse.which = which; fse.pad = pad; + fse.stream = stream; fie.which = which; fie.pad = pad; + fie.stream = stream; fail_on_test(doioctl(node, VIDIOC_SUBDEV_ENUM_FRAME_SIZE, &fse) != ENOTTY); fail_on_test(doioctl(node, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, &fie) != ENOTTY); return ret; @@ -226,16 +234,19 @@ int testSubDevEnum(struct node *node, unsigned which, unsigned pad) mbus_core_enum.index = ~0; fail_on_test(doioctl(node, VIDIOC_SUBDEV_ENUM_MBUS_CODE, &mbus_core_enum) != EINVAL); mbus_core_enum.pad = node->entity.pads; + mbus_core_enum.stream = stream; mbus_core_enum.index = 0; fail_on_test(doioctl(node, VIDIOC_SUBDEV_ENUM_MBUS_CODE, &mbus_core_enum) != EINVAL); memset(&mbus_core_enum, 0xff, sizeof(mbus_core_enum)); mbus_core_enum.which = which; mbus_core_enum.pad = pad; + mbus_core_enum.stream = stream; mbus_core_enum.index = 0; fail_on_test(doioctl(node, VIDIOC_SUBDEV_ENUM_MBUS_CODE, &mbus_core_enum)); fail_on_test(check_0(mbus_core_enum.reserved, sizeof(mbus_core_enum.reserved))); fail_on_test(mbus_core_enum.code == ~0U); fail_on_test(mbus_core_enum.pad != pad); + fail_on_test(mbus_core_enum.stream != stream); fail_on_test(mbus_core_enum.index); fail_on_test(mbus_core_enum.which != which); do { @@ -252,6 +263,7 @@ int testSubDevEnum(struct node *node, unsigned which, unsigned pad) fail_on_test(!mbus_core_enum.code); fail_on_test(mbus_core_enum.which != which); fail_on_test(mbus_core_enum.pad != pad); + fail_on_test(mbus_core_enum.stream != stream); fail_on_test(mbus_core_enum.index != i); ret = testSubDevEnumFrameSize(node, which, pad, mbus_core_enum.code); @@ -260,7 +272,7 @@ int testSubDevEnum(struct node *node, unsigned which, unsigned pad) return 0; } -int testSubDevFrameInterval(struct node *node, unsigned pad) +int testSubDevFrameInterval(struct node *node, unsigned pad, unsigned stream) { struct v4l2_subdev_frame_interval fival; struct v4l2_fract ival; @@ -268,6 +280,7 @@ int testSubDevFrameInterval(struct node *node, unsigned pad) memset(&fival, 0xff, sizeof(fival)); fival.pad = pad; + fival.stream = stream; ret = doioctl(node, VIDIOC_SUBDEV_G_FRAME_INTERVAL, &fival); if (ret == ENOTTY) { fail_on_test(node->enum_frame_interval_pad >= 0); @@ -279,6 +292,7 @@ int testSubDevFrameInterval(struct node *node, unsigned pad) node->frame_interval_pad = pad; fail_on_test(check_0(fival.reserved, sizeof(fival.reserved))); fail_on_test(fival.pad != pad); + fail_on_test(fival.stream != stream); fail_on_test(!fival.interval.numerator); fail_on_test(!fival.interval.denominator); fail_on_test(fival.interval.numerator == ~0U || fival.interval.denominator == ~0U); @@ -290,20 +304,25 @@ int testSubDevFrameInterval(struct node *node, unsigned pad) } fail_on_test(doioctl(node, VIDIOC_SUBDEV_S_FRAME_INTERVAL, &fival)); fail_on_test(fival.pad != pad); + fail_on_test(fival.stream != stream); fail_on_test(ival.numerator != fival.interval.numerator); fail_on_test(ival.denominator != fival.interval.denominator); fail_on_test(check_0(fival.reserved, sizeof(fival.reserved))); memset(&fival, 0, sizeof(fival)); fival.pad = pad; + fival.stream = stream; fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_FRAME_INTERVAL, &fival)); fail_on_test(fival.pad != pad); + fail_on_test(fival.stream != stream); fail_on_test(ival.numerator != fival.interval.numerator); fail_on_test(ival.denominator != fival.interval.denominator); fival.pad = node->entity.pads; + fival.stream = stream; fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_FRAME_INTERVAL, &fival) != EINVAL); fail_on_test(doioctl(node, VIDIOC_SUBDEV_S_FRAME_INTERVAL, &fival) != EINVAL); fival.pad = pad; + fival.stream = stream; fival.interval = ival; fival.interval.numerator = 0; fail_on_test(doioctl(node, VIDIOC_SUBDEV_S_FRAME_INTERVAL, &fival)); @@ -340,7 +359,7 @@ static int checkMBusFrameFmt(struct node *node, struct v4l2_mbus_framefmt &fmt) return 0; } -int testSubDevFormat(struct node *node, unsigned which, unsigned pad) +int testSubDevFormat(struct node *node, unsigned which, unsigned pad, unsigned stream) { struct v4l2_subdev_format fmt; struct v4l2_subdev_format s_fmt; @@ -349,6 +368,7 @@ int testSubDevFormat(struct node *node, unsigned which, unsigned pad) memset(&fmt, 0, sizeof(fmt)); fmt.which = which; fmt.pad = pad; + fmt.stream = stream; ret = doioctl(node, VIDIOC_SUBDEV_G_FMT, &fmt); node->has_subdev_fmt |= (ret != ENOTTY) << which; if (ret == ENOTTY) { @@ -359,14 +379,17 @@ int testSubDevFormat(struct node *node, unsigned which, unsigned pad) fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_FMT, &fmt) != EINVAL); fmt.which = 0; fmt.pad = node->entity.pads; + fmt.stream = stream; fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_FMT, &fmt) != EINVAL); memset(&fmt, 0xff, sizeof(fmt)); fmt.which = which; fmt.pad = pad; + fmt.stream = stream; fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_FMT, &fmt)); fail_on_test(check_0(fmt.reserved, sizeof(fmt.reserved))); fail_on_test(fmt.which != which); fail_on_test(fmt.pad != pad); + fail_on_test(fmt.stream != stream); fail_on_test(checkMBusFrameFmt(node, fmt.format)); s_fmt = fmt; memset(s_fmt.reserved, 0xff, sizeof(s_fmt.reserved)); @@ -379,6 +402,7 @@ int testSubDevFormat(struct node *node, unsigned which, unsigned pad) fail_on_test(ret && ret != ENOTTY); fail_on_test(s_fmt.which != which); fail_on_test(s_fmt.pad != pad); + fail_on_test(s_fmt.stream != stream); if (ret) { warn("VIDIOC_SUBDEV_G_FMT is supported but not VIDIOC_SUBDEV_S_FMT\n"); return 0; @@ -423,7 +447,7 @@ static target_info targets[] = { { ~0U }, }; -int testSubDevSelection(struct node *node, unsigned which, unsigned pad) +int testSubDevSelection(struct node *node, unsigned which, unsigned pad, unsigned stream) { struct v4l2_subdev_selection sel; struct v4l2_subdev_selection s_sel; @@ -435,10 +459,12 @@ int testSubDevSelection(struct node *node, unsigned which, unsigned pad) targets[V4L2_SEL_TGT_NATIVE_SIZE].readonly = is_sink; memset(&crop, 0, sizeof(crop)); crop.pad = pad; + crop.stream = stream; crop.which = which; memset(&sel, 0, sizeof(sel)); sel.which = which; sel.pad = pad; + sel.stream = stream; sel.target = V4L2_SEL_TGT_CROP; ret = doioctl(node, VIDIOC_SUBDEV_G_SELECTION, &sel); node->has_subdev_selection |= (ret != ENOTTY) << which; @@ -451,6 +477,7 @@ int testSubDevSelection(struct node *node, unsigned which, unsigned pad) fail_on_test(check_0(crop.reserved, sizeof(crop.reserved))); fail_on_test(crop.which != which); fail_on_test(crop.pad != pad); + fail_on_test(crop.stream != stream); fail_on_test(memcmp(&crop.rect, &sel.r, sizeof(sel.r))); for (unsigned tgt = 0; targets[tgt].target != ~0U; tgt++) { @@ -458,6 +485,7 @@ int testSubDevSelection(struct node *node, unsigned which, unsigned pad) memset(&sel, 0xff, sizeof(sel)); sel.which = which; sel.pad = pad; + sel.stream = stream; sel.target = tgt; ret = doioctl(node, VIDIOC_SUBDEV_G_SELECTION, &sel); targets[tgt].found = !ret; @@ -469,6 +497,7 @@ int testSubDevSelection(struct node *node, unsigned which, unsigned pad) fail_on_test(check_0(sel.reserved, sizeof(sel.reserved))); fail_on_test(sel.which != which); fail_on_test(sel.pad != pad); + fail_on_test(sel.stream != stream); fail_on_test(sel.target != tgt); fail_on_test(!sel.r.width); fail_on_test(sel.r.width == ~0U); @@ -480,9 +509,11 @@ int testSubDevSelection(struct node *node, unsigned which, unsigned pad) fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_SELECTION, &sel) != EINVAL); sel.which = 0; sel.pad = node->entity.pads; + sel.stream = stream; fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_SELECTION, &sel) != EINVAL); sel.which = which; sel.pad = pad; + sel.stream = stream; s_sel = sel; memset(s_sel.reserved, 0xff, sizeof(s_sel.reserved)); ret = doioctl(node, VIDIOC_SUBDEV_S_SELECTION, &s_sel); @@ -496,6 +527,7 @@ int testSubDevSelection(struct node *node, unsigned which, unsigned pad) fail_on_test(check_0(crop.reserved, sizeof(crop.reserved))); fail_on_test(crop.which != which); fail_on_test(crop.pad != pad); + fail_on_test(crop.stream != stream); fail_on_test(memcmp(&crop.rect, &sel.r, sizeof(sel.r))); } } @@ -504,6 +536,7 @@ int testSubDevSelection(struct node *node, unsigned which, unsigned pad) fail_on_test(!ret && targets[tgt].readonly); fail_on_test(s_sel.which != which); fail_on_test(s_sel.pad != pad); + fail_on_test(s_sel.stream != stream); if (ret && !targets[tgt].readonly && tgt != V4L2_SEL_TGT_NATIVE_SIZE) warn("VIDIOC_SUBDEV_G_SELECTION is supported for target %u but not VIDIOC_SUBDEV_S_SELECTION\n", tgt); if (ret)

[v6,4/8] v4l2-ctl/compliance: Add routing and streams multiplexed streams

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Patch