| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Hans Verkuil | 14960 | 74.08% | 113 | 46.12% |
| Arnd Bergmann | 1049 | 5.19% | 8 | 3.27% |
| Laurent Pinchart | 836 | 4.14% | 11 | 4.49% |
| Antti Palosaari | 493 | 2.44% | 7 | 2.86% |
| Niklas Söderlund | 460 | 2.28% | 3 | 1.22% |
| Sakari Ailus | 428 | 2.12% | 13 | 5.31% |
| Ezequiel García | 284 | 1.41% | 10 | 4.08% |
| Pawel Osciak | 273 | 1.35% | 3 | 1.22% |
| Sami Tolvanen | 220 | 1.09% | 1 | 0.41% |
| Ricardo Ribalda Delgado | 136 | 0.67% | 6 | 2.45% |
| Vandana BN | 134 | 0.66% | 3 | 1.22% |
| Shuah Khan | 129 | 0.64% | 1 | 0.41% |
| Trent Piepho | 91 | 0.45% | 4 | 1.63% |
| Tomasz Stanislawski | 72 | 0.36% | 3 | 1.22% |
| Peilin Ye | 66 | 0.33% | 1 | 0.41% |
| Boris Brezillon | 65 | 0.32% | 2 | 0.82% |
| Mauro Carvalho Chehab | 59 | 0.29% | 11 | 4.49% |
| Nick Dyer | 54 | 0.27% | 1 | 0.41% |
| Murali Karicheri | 46 | 0.23% | 1 | 0.41% |
| Yong Zhi | 32 | 0.16% | 1 | 0.41% |
| Vivek Kasireddy | 32 | 0.16% | 1 | 0.41% |
| Ramesh Shanmugasundaram | 24 | 0.12% | 1 | 0.41% |
| Paul Kocialkowski | 16 | 0.08% | 2 | 0.82% |
| Stanimir Varbanov | 16 | 0.08% | 1 | 0.41% |
| Ming Qian | 16 | 0.08% | 1 | 0.41% |
| Dan Carpenter | 16 | 0.08% | 1 | 0.41% |
| Shunqian Zheng | 16 | 0.08% | 1 | 0.41% |
| Alexandre Courbot | 13 | 0.06% | 2 | 0.82% |
| Thierry Reding | 12 | 0.06% | 1 | 0.41% |
| Smitha T Murthy | 9 | 0.04% | 1 | 0.41% |
| Sergey Dorodnicov | 8 | 0.04% | 1 | 0.41% |
| Todor Tomov | 8 | 0.04% | 1 | 0.41% |
| Mirela Rabulea | 8 | 0.04% | 1 | 0.41% |
| Daniel Glöckner | 8 | 0.04% | 1 | 0.41% |
| Wu-Cheng Li | 8 | 0.04% | 1 | 0.41% |
| Tiffany Lin | 8 | 0.04% | 1 | 0.41% |
| Sergey Senozhatsky | 8 | 0.04% | 2 | 0.82% |
| Daniel Scally | 8 | 0.04% | 1 | 0.41% |
| Andrzej Pietrasiewicz | 8 | 0.04% | 1 | 0.41% |
| Evgeni Raikhel | 8 | 0.04% | 1 | 0.41% |
| Maxime Ripard | 7 | 0.03% | 1 | 0.41% |
| Guennadi Liakhovetski | 7 | 0.03% | 1 | 0.41% |
| Benjamin Gaignard | 7 | 0.03% | 1 | 0.41% |
| Sumit Semwal | 6 | 0.03% | 1 | 0.41% |
| Tomasz Figa | 5 | 0.02% | 1 | 0.41% |
| Helen Mae Koike Fornazier | 5 | 0.02% | 1 | 0.41% |
| Laura Abbott | 3 | 0.01% | 1 | 0.41% |
| Tejun Heo | 3 | 0.01% | 1 | 0.41% |
| Ramakrishnan Muthukrishnan | 2 | 0.01% | 1 | 0.41% |
| Hans Petter Selasky | 2 | 0.01% | 1 | 0.41% |
| Thomas Gleixner | 2 | 0.01% | 1 | 0.41% |
| Tim Harvey | 1 | 0.00% | 1 | 0.41% |
| Lucas De Marchi | 1 | 0.00% | 1 | 0.41% |
| Philipp Zabel | 1 | 0.00% | 1 | 0.41% |
| Junghak Sung | 1 | 0.00% | 1 | 0.41% |
| Pankaj Bharadiya | 1 | 0.00% | 1 | 0.41% |
| Eric Biggers | 1 | 0.00% | 1 | 0.41% |
| Sebastian Fricke | 1 | 0.00% | 1 | 0.41% |
| Slark Xiao | 1 | 0.00% | 1 | 0.41% |
| Total | 20194 | 245 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Video capture interface for Linux version 2 * * A generic framework to process V4L2 ioctl commands. * * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) */ #include <linux/compat.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/version.h> #include <linux/videodev2.h> #include <media/media-device.h> /* for media_set_bus_info() */ #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-fh.h> #include <media/v4l2-event.h> #include <media/v4l2-device.h> #include <media/videobuf2-v4l2.h> #include <media/v4l2-mc.h> #include <media/v4l2-mem2mem.h> #include <trace/events/v4l2.h> /* Zero out the end of the struct pointed to by p. Everything after, but * not including, the specified field is cleared. */ #define CLEAR_AFTER_FIELD(p, field) \ memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) struct std_descr { v4l2_std_id std; const char *descr; }; static const struct std_descr standards[] = { { V4L2_STD_NTSC, "NTSC" }, { V4L2_STD_NTSC_M, "NTSC-M" }, { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, { V4L2_STD_NTSC_443, "NTSC-443" }, { V4L2_STD_PAL, "PAL" }, { V4L2_STD_PAL_BG, "PAL-BG" }, { V4L2_STD_PAL_B, "PAL-B" }, { V4L2_STD_PAL_B1, "PAL-B1" }, { V4L2_STD_PAL_G, "PAL-G" }, { V4L2_STD_PAL_H, "PAL-H" }, { V4L2_STD_PAL_I, "PAL-I" }, { V4L2_STD_PAL_DK, "PAL-DK" }, { V4L2_STD_PAL_D, "PAL-D" }, { V4L2_STD_PAL_D1, "PAL-D1" }, { V4L2_STD_PAL_K, "PAL-K" }, { V4L2_STD_PAL_M, "PAL-M" }, { V4L2_STD_PAL_N, "PAL-N" }, { V4L2_STD_PAL_Nc, "PAL-Nc" }, { V4L2_STD_PAL_60, "PAL-60" }, { V4L2_STD_SECAM, "SECAM" }, { V4L2_STD_SECAM_B, "SECAM-B" }, { V4L2_STD_SECAM_G, "SECAM-G" }, { V4L2_STD_SECAM_H, "SECAM-H" }, { V4L2_STD_SECAM_DK, "SECAM-DK" }, { V4L2_STD_SECAM_D, "SECAM-D" }, { V4L2_STD_SECAM_K, "SECAM-K" }, { V4L2_STD_SECAM_K1, "SECAM-K1" }, { V4L2_STD_SECAM_L, "SECAM-L" }, { V4L2_STD_SECAM_LC, "SECAM-Lc" }, { 0, "Unknown" } }; /* video4linux standard ID conversion to standard name */ const char *v4l2_norm_to_name(v4l2_std_id id) { u32 myid = id; int i; /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 64 bit comparisons. So, on that architecture, with some gcc variants, compilation fails. Currently, the max value is 30bit wide. */ BUG_ON(myid != id); for (i = 0; standards[i].std; i++) if (myid == standards[i].std) break; return standards[i].descr; } EXPORT_SYMBOL(v4l2_norm_to_name); /* Returns frame period for the given standard */ void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) { if (id & V4L2_STD_525_60) { frameperiod->numerator = 1001; frameperiod->denominator = 30000; } else { frameperiod->numerator = 1; frameperiod->denominator = 25; } } EXPORT_SYMBOL(v4l2_video_std_frame_period); /* Fill in the fields of a v4l2_standard structure according to the 'id' and 'transmission' parameters. Returns negative on error. */ int v4l2_video_std_construct(struct v4l2_standard *vs, int id, const char *name) { vs->id = id; v4l2_video_std_frame_period(id, &vs->frameperiod); vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; strscpy(vs->name, name, sizeof(vs->name)); return 0; } EXPORT_SYMBOL(v4l2_video_std_construct); /* Fill in the fields of a v4l2_standard structure according to the * 'id' and 'vs->index' parameters. Returns negative on error. */ int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) { v4l2_std_id curr_id = 0; unsigned int index = vs->index, i, j = 0; const char *descr = ""; /* Return -ENODATA if the id for the current input or output is 0, meaning that it doesn't support this API. */ if (id == 0) return -ENODATA; /* Return norm array in a canonical way */ for (i = 0; i <= index && id; i++) { /* last std value in the standards array is 0, so this while always ends there since (id & 0) == 0. */ while ((id & standards[j].std) != standards[j].std) j++; curr_id = standards[j].std; descr = standards[j].descr; j++; if (curr_id == 0) break; if (curr_id != V4L2_STD_PAL && curr_id != V4L2_STD_SECAM && curr_id != V4L2_STD_NTSC) id &= ~curr_id; } if (i <= index) return -EINVAL; v4l2_video_std_construct(vs, curr_id, descr); return 0; } /* ----------------------------------------------------------------- */ /* some arrays for pretty-printing debug messages of enum types */ const char *v4l2_field_names[] = { [V4L2_FIELD_ANY] = "any", [V4L2_FIELD_NONE] = "none", [V4L2_FIELD_TOP] = "top", [V4L2_FIELD_BOTTOM] = "bottom", [V4L2_FIELD_INTERLACED] = "interlaced", [V4L2_FIELD_SEQ_TB] = "seq-tb", [V4L2_FIELD_SEQ_BT] = "seq-bt", [V4L2_FIELD_ALTERNATE] = "alternate", [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", }; EXPORT_SYMBOL(v4l2_field_names); const char *v4l2_type_names[] = { [0] = "0", [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", }; EXPORT_SYMBOL(v4l2_type_names); static const char *v4l2_memory_names[] = { [V4L2_MEMORY_MMAP] = "mmap", [V4L2_MEMORY_USERPTR] = "userptr", [V4L2_MEMORY_OVERLAY] = "overlay", [V4L2_MEMORY_DMABUF] = "dmabuf", }; #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") /* ------------------------------------------------------------------ */ /* debug help functions */ static void v4l_print_querycap(const void *arg, bool write_only) { const struct v4l2_capability *p = arg; pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", (int)sizeof(p->driver), p->driver, (int)sizeof(p->card), p->card, (int)sizeof(p->bus_info), p->bus_info, p->version, p->capabilities, p->device_caps); } static void v4l_print_enuminput(const void *arg, bool write_only) { const struct v4l2_input *p = arg; pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, p->tuner, (unsigned long long)p->std, p->status, p->capabilities); } static void v4l_print_enumoutput(const void *arg, bool write_only) { const struct v4l2_output *p = arg; pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, p->modulator, (unsigned long long)p->std, p->capabilities); } static void v4l_print_audio(const void *arg, bool write_only) { const struct v4l2_audio *p = arg; if (write_only) pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); else pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", p->index, (int)sizeof(p->name), p->name, p->capability, p->mode); } static void v4l_print_audioout(const void *arg, bool write_only) { const struct v4l2_audioout *p = arg; if (write_only) pr_cont("index=%u\n", p->index); else pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", p->index, (int)sizeof(p->name), p->name, p->capability, p->mode); } static void v4l_print_fmtdesc(const void *arg, bool write_only) { const struct v4l2_fmtdesc *p = arg; pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n", p->index, prt_names(p->type, v4l2_type_names), p->flags, &p->pixelformat, p->mbus_code, (int)sizeof(p->description), p->description); } static void v4l_print_format(const void *arg, bool write_only) { const struct v4l2_format *p = arg; const struct v4l2_pix_format *pix; const struct v4l2_pix_format_mplane *mp; const struct v4l2_vbi_format *vbi; const struct v4l2_sliced_vbi_format *sliced; const struct v4l2_window *win; const struct v4l2_meta_format *meta; u32 pixelformat; u32 planes; unsigned i; pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: pix = &p->fmt.pix; pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", pix->width, pix->height, &pix->pixelformat, prt_names(pix->field, v4l2_field_names), pix->bytesperline, pix->sizeimage, pix->colorspace, pix->flags, pix->ycbcr_enc, pix->quantization, pix->xfer_func); break; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: mp = &p->fmt.pix_mp; pixelformat = mp->pixelformat; pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", mp->width, mp->height, &pixelformat, prt_names(mp->field, v4l2_field_names), mp->colorspace, mp->num_planes, mp->flags, mp->ycbcr_enc, mp->quantization, mp->xfer_func); planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); for (i = 0; i < planes; i++) printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, mp->plane_fmt[i].bytesperline, mp->plane_fmt[i].sizeimage); break; case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: win = &p->fmt.win; /* Note: we can't print the clip list here since the clips * pointer is a userspace pointer, not a kernelspace * pointer. */ pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", win->w.width, win->w.height, win->w.left, win->w.top, prt_names(win->field, v4l2_field_names), win->chromakey, win->clipcount, win->clips, win->bitmap, win->global_alpha); break; case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: vbi = &p->fmt.vbi; pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", vbi->sampling_rate, vbi->offset, vbi->samples_per_line, &vbi->sample_format, vbi->start[0], vbi->start[1], vbi->count[0], vbi->count[1]); break; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: sliced = &p->fmt.sliced; pr_cont(", service_set=0x%08x, io_size=%d\n", sliced->service_set, sliced->io_size); for (i = 0; i < 24; i++) printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, sliced->service_lines[0][i], sliced->service_lines[1][i]); break; case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: pixelformat = p->fmt.sdr.pixelformat; pr_cont(", pixelformat=%p4cc\n", &pixelformat); break; case V4L2_BUF_TYPE_META_CAPTURE: case V4L2_BUF_TYPE_META_OUTPUT: meta = &p->fmt.meta; pixelformat = meta->dataformat; pr_cont(", dataformat=%p4cc, buffersize=%u\n", &pixelformat, meta->buffersize); break; } } static void v4l_print_framebuffer(const void *arg, bool write_only) { const struct v4l2_framebuffer *p = arg; pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, p->fmt.colorspace); } static void v4l_print_buftype(const void *arg, bool write_only) { pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); } static void v4l_print_modulator(const void *arg, bool write_only) { const struct v4l2_modulator *p = arg; if (write_only) pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); else pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", p->index, (int)sizeof(p->name), p->name, p->capability, p->rangelow, p->rangehigh, p->txsubchans); } static void v4l_print_tuner(const void *arg, bool write_only) { const struct v4l2_tuner *p = arg; if (write_only) pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); else pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n", p->index, (int)sizeof(p->name), p->name, p->type, p->capability, p->rangelow, p->rangehigh, p->signal, p->afc, p->rxsubchans, p->audmode); } static void v4l_print_frequency(const void *arg, bool write_only) { const struct v4l2_frequency *p = arg; pr_cont("tuner=%u, type=%u, frequency=%u\n", p->tuner, p->type, p->frequency); } static void v4l_print_standard(const void *arg, bool write_only) { const struct v4l2_standard *p = arg; pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", p->index, (unsigned long long)p->id, (int)sizeof(p->name), p->name, p->frameperiod.numerator, p->frameperiod.denominator, p->framelines); } static void v4l_print_std(const void *arg, bool write_only) { pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); } static void v4l_print_hw_freq_seek(const void *arg, bool write_only) { const struct v4l2_hw_freq_seek *p = arg; pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, p->rangelow, p->rangehigh); } static void v4l_print_requestbuffers(const void *arg, bool write_only) { const struct v4l2_requestbuffers *p = arg; pr_cont("count=%d, type=%s, memory=%s\n", p->count, prt_names(p->type, v4l2_type_names), prt_names(p->memory, v4l2_memory_names)); } static void v4l_print_buffer(const void *arg, bool write_only) { const struct v4l2_buffer *p = arg; const struct v4l2_timecode *tc = &p->timecode; const struct v4l2_plane *plane; int i; pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", (int)p->timestamp.tv_sec / 3600, ((int)p->timestamp.tv_sec / 60) % 60, ((int)p->timestamp.tv_sec % 60), (long)p->timestamp.tv_usec, p->index, prt_names(p->type, v4l2_type_names), p->request_fd, p->flags, prt_names(p->field, v4l2_field_names), p->sequence, prt_names(p->memory, v4l2_memory_names)); if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { pr_cont("\n"); for (i = 0; i < p->length; ++i) { plane = &p->m.planes[i]; printk(KERN_DEBUG "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", i, plane->bytesused, plane->data_offset, plane->m.userptr, plane->length); } } else { pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", p->bytesused, p->m.userptr, p->length); } printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", tc->hours, tc->minutes, tc->seconds, tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); } static void v4l_print_exportbuffer(const void *arg, bool write_only) { const struct v4l2_exportbuffer *p = arg; pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", p->fd, prt_names(p->type, v4l2_type_names), p->index, p->plane, p->flags); } static void v4l_print_create_buffers(const void *arg, bool write_only) { const struct v4l2_create_buffers *p = arg; pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", p->index, p->count, prt_names(p->memory, v4l2_memory_names), p->capabilities); v4l_print_format(&p->format, write_only); } static void v4l_print_streamparm(const void *arg, bool write_only) { const struct v4l2_streamparm *p = arg; pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { const struct v4l2_captureparm *c = &p->parm.capture; pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", c->capability, c->capturemode, c->timeperframe.numerator, c->timeperframe.denominator, c->extendedmode, c->readbuffers); } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { const struct v4l2_outputparm *c = &p->parm.output; pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", c->capability, c->outputmode, c->timeperframe.numerator, c->timeperframe.denominator, c->extendedmode, c->writebuffers); } else { pr_cont("\n"); } } static void v4l_print_queryctrl(const void *arg, bool write_only) { const struct v4l2_queryctrl *p = arg; pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", p->id, p->type, (int)sizeof(p->name), p->name, p->minimum, p->maximum, p->step, p->default_value, p->flags); } static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) { const struct v4l2_query_ext_ctrl *p = arg; pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n", p->id, p->type, (int)sizeof(p->name), p->name, p->minimum, p->maximum, p->step, p->default_value, p->flags, p->elem_size, p->elems, p->nr_of_dims, p->dims[0], p->dims[1], p->dims[2], p->dims[3]); } static void v4l_print_querymenu(const void *arg, bool write_only) { const struct v4l2_querymenu *p = arg; pr_cont("id=0x%x, index=%d\n", p->id, p->index); } static void v4l_print_control(const void *arg, bool write_only) { const struct v4l2_control *p = arg; const char *name = v4l2_ctrl_get_name(p->id); if (name) pr_cont("name=%s, ", name); pr_cont("id=0x%x, value=%d\n", p->id, p->value); } static void v4l_print_ext_controls(const void *arg, bool write_only) { const struct v4l2_ext_controls *p = arg; int i; pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", p->which, p->count, p->error_idx, p->request_fd); for (i = 0; i < p->count; i++) { unsigned int id = p->controls[i].id; const char *name = v4l2_ctrl_get_name(id); if (name) pr_cont(", name=%s", name); if (!p->controls[i].size) pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); else pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); } pr_cont("\n"); } static void v4l_print_cropcap(const void *arg, bool write_only) { const struct v4l2_cropcap *p = arg; pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", prt_names(p->type, v4l2_type_names), p->bounds.width, p->bounds.height, p->bounds.left, p->bounds.top, p->defrect.width, p->defrect.height, p->defrect.left, p->defrect.top, p->pixelaspect.numerator, p->pixelaspect.denominator); } static void v4l_print_crop(const void *arg, bool write_only) { const struct v4l2_crop *p = arg; pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", prt_names(p->type, v4l2_type_names), p->c.width, p->c.height, p->c.left, p->c.top); } static void v4l_print_selection(const void *arg, bool write_only) { const struct v4l2_selection *p = arg; pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", prt_names(p->type, v4l2_type_names), p->target, p->flags, p->r.width, p->r.height, p->r.left, p->r.top); } static void v4l_print_jpegcompression(const void *arg, bool write_only) { const struct v4l2_jpegcompression *p = arg; pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", p->quality, p->APPn, p->APP_len, p->COM_len, p->jpeg_markers); } static void v4l_print_enc_idx(const void *arg, bool write_only) { const struct v4l2_enc_idx *p = arg; pr_cont("entries=%d, entries_cap=%d\n", p->entries, p->entries_cap); } static void v4l_print_encoder_cmd(const void *arg, bool write_only) { const struct v4l2_encoder_cmd *p = arg; pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); } static void v4l_print_decoder_cmd(const void *arg, bool write_only) { const struct v4l2_decoder_cmd *p = arg; pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); if (p->cmd == V4L2_DEC_CMD_START) pr_info("speed=%d, format=%u\n", p->start.speed, p->start.format); else if (p->cmd == V4L2_DEC_CMD_STOP) pr_info("pts=%llu\n", p->stop.pts); } static void v4l_print_dbg_chip_info(const void *arg, bool write_only) { const struct v4l2_dbg_chip_info *p = arg; pr_cont("type=%u, ", p->match.type); if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) pr_cont("name=%.*s, ", (int)sizeof(p->match.name), p->match.name); else pr_cont("addr=%u, ", p->match.addr); pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); } static void v4l_print_dbg_register(const void *arg, bool write_only) { const struct v4l2_dbg_register *p = arg; pr_cont("type=%u, ", p->match.type); if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) pr_cont("name=%.*s, ", (int)sizeof(p->match.name), p->match.name); else pr_cont("addr=%u, ", p->match.addr); pr_cont("reg=0x%llx, val=0x%llx\n", p->reg, p->val); } static void v4l_print_dv_timings(const void *arg, bool write_only) { const struct v4l2_dv_timings *p = arg; switch (p->type) { case V4L2_DV_BT_656_1120: pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n", p->bt.interlaced, p->bt.pixelclock, p->bt.width, p->bt.height, p->bt.polarities, p->bt.hfrontporch, p->bt.hsync, p->bt.hbackporch, p->bt.vfrontporch, p->bt.vsync, p->bt.vbackporch, p->bt.il_vfrontporch, p->bt.il_vsync, p->bt.il_vbackporch, p->bt.standards, p->bt.flags); break; default: pr_cont("type=%d\n", p->type); break; } } static void v4l_print_enum_dv_timings(const void *arg, bool write_only) { const struct v4l2_enum_dv_timings *p = arg; pr_cont("index=%u, ", p->index); v4l_print_dv_timings(&p->timings, write_only); } static void v4l_print_dv_timings_cap(const void *arg, bool write_only) { const struct v4l2_dv_timings_cap *p = arg; switch (p->type) { case V4L2_DV_BT_656_1120: pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", p->bt.min_width, p->bt.max_width, p->bt.min_height, p->bt.max_height, p->bt.min_pixelclock, p->bt.max_pixelclock, p->bt.standards, p->bt.capabilities); break; default: pr_cont("type=%u\n", p->type); break; } } static void v4l_print_frmsizeenum(const void *arg, bool write_only) { const struct v4l2_frmsizeenum *p = arg; pr_cont("index=%u, pixelformat=%p4cc, type=%u", p->index, &p->pixel_format, p->type); switch (p->type) { case V4L2_FRMSIZE_TYPE_DISCRETE: pr_cont(", wxh=%ux%u\n", p->discrete.width, p->discrete.height); break; case V4L2_FRMSIZE_TYPE_STEPWISE: pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", p->stepwise.min_width, p->stepwise.min_height, p->stepwise.max_width, p->stepwise.max_height, p->stepwise.step_width, p->stepwise.step_height); break; case V4L2_FRMSIZE_TYPE_CONTINUOUS: default: pr_cont("\n"); break; } } static void v4l_print_frmivalenum(const void *arg, bool write_only) { const struct v4l2_frmivalenum *p = arg; pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", p->index, &p->pixel_format, p->width, p->height, p->type); switch (p->type) { case V4L2_FRMIVAL_TYPE_DISCRETE: pr_cont(", fps=%d/%d\n", p->discrete.numerator, p->discrete.denominator); break; case V4L2_FRMIVAL_TYPE_STEPWISE: pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", p->stepwise.min.numerator, p->stepwise.min.denominator, p->stepwise.max.numerator, p->stepwise.max.denominator, p->stepwise.step.numerator, p->stepwise.step.denominator); break; case V4L2_FRMIVAL_TYPE_CONTINUOUS: default: pr_cont("\n"); break; } } static void v4l_print_event(const void *arg, bool write_only) { const struct v4l2_event *p = arg; const struct v4l2_event_ctrl *c; pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", p->type, p->pending, p->sequence, p->id, p->timestamp.tv_sec, p->timestamp.tv_nsec); switch (p->type) { case V4L2_EVENT_VSYNC: printk(KERN_DEBUG "field=%s\n", prt_names(p->u.vsync.field, v4l2_field_names)); break; case V4L2_EVENT_CTRL: c = &p->u.ctrl; printk(KERN_DEBUG "changes=0x%x, type=%u, ", c->changes, c->type); if (c->type == V4L2_CTRL_TYPE_INTEGER64) pr_cont("value64=%lld, ", c->value64); else pr_cont("value=%d, ", c->value); pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", c->flags, c->minimum, c->maximum, c->step, c->default_value); break; case V4L2_EVENT_FRAME_SYNC: pr_cont("frame_sequence=%u\n", p->u.frame_sync.frame_sequence); break; } } static void v4l_print_event_subscription(const void *arg, bool write_only) { const struct v4l2_event_subscription *p = arg; pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", p->type, p->id, p->flags); } static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) { const struct v4l2_sliced_vbi_cap *p = arg; int i; pr_cont("type=%s, service_set=0x%08x\n", prt_names(p->type, v4l2_type_names), p->service_set); for (i = 0; i < 24; i++) printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, p->service_lines[0][i], p->service_lines[1][i]); } static void v4l_print_freq_band(const void *arg, bool write_only) { const struct v4l2_frequency_band *p = arg; pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", p->tuner, p->type, p->index, p->capability, p->rangelow, p->rangehigh, p->modulation); } static void v4l_print_edid(const void *arg, bool write_only) { const struct v4l2_edid *p = arg; pr_cont("pad=%u, start_block=%u, blocks=%u\n", p->pad, p->start_block, p->blocks); } static void v4l_print_u32(const void *arg, bool write_only) { pr_cont("value=%u\n", *(const u32 *)arg); } static void v4l_print_newline(const void *arg, bool write_only) { pr_cont("\n"); } static void v4l_print_default(const void *arg, bool write_only) { pr_cont("driver-specific ioctl\n"); } static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) { __u32 i; /* zero the reserved fields */ c->reserved[0] = 0; for (i = 0; i < c->count; i++) c->controls[i].reserved2[0] = 0; switch (c->which) { case V4L2_CID_PRIVATE_BASE: /* * V4L2_CID_PRIVATE_BASE cannot be used as control class * when using extended controls. * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL * is it allowed for backwards compatibility. */ if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) return false; break; case V4L2_CTRL_WHICH_DEF_VAL: /* Default value cannot be changed */ if (ioctl == VIDIOC_S_EXT_CTRLS || ioctl == VIDIOC_TRY_EXT_CTRLS) { c->error_idx = c->count; return false; } return true; case V4L2_CTRL_WHICH_CUR_VAL: return true; case V4L2_CTRL_WHICH_REQUEST_VAL: c->error_idx = c->count; return false; } /* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : c->count; return false; } } return true; } static int check_fmt(struct file *file, enum v4l2_buf_type type) { const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_VIDEO_OUTPUT_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; const u32 meta_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_META_OUTPUT; struct video_device *vfd = video_devdata(file); const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && (vfd->device_caps & vid_caps); bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && (vfd->device_caps & meta_caps); bool is_rx = vfd->vfl_dir != VFL_DIR_TX; bool is_tx = vfd->vfl_dir != VFL_DIR_RX; if (ops == NULL) return -EINVAL; switch (type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: if ((is_vid || is_tch) && is_rx && (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) return 0; break; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) return 0; break; case V4L2_BUF_TYPE_VIDEO_OVERLAY: if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) return 0; break; case V4L2_BUF_TYPE_VIDEO_OUTPUT: if (is_vid && is_tx && (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) return 0; break; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) return 0; break; case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) return 0; break; case V4L2_BUF_TYPE_VBI_CAPTURE: if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) return 0; break; case V4L2_BUF_TYPE_VBI_OUTPUT: if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) return 0; break; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) return 0; break; case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) return 0; break; case V4L2_BUF_TYPE_SDR_CAPTURE: if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) return 0; break; case V4L2_BUF_TYPE_SDR_OUTPUT: if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) return 0; break; case V4L2_BUF_TYPE_META_CAPTURE: if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) return 0; break; case V4L2_BUF_TYPE_META_OUTPUT: if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) return 0; break; default: break; } return -EINVAL; } static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace, u32 *encoding, u32 *quantization, u32 *xfer_func) { bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 || pixelformat == V4L2_PIX_FMT_HSV32; if (!v4l2_is_colorspace_valid(*colorspace)) { *colorspace = V4L2_COLORSPACE_DEFAULT; *encoding = V4L2_YCBCR_ENC_DEFAULT; *quantization = V4L2_QUANTIZATION_DEFAULT; *xfer_func = V4L2_XFER_FUNC_DEFAULT; } if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) || (is_hsv && !v4l2_is_hsv_enc_valid(*encoding))) *encoding = V4L2_YCBCR_ENC_DEFAULT; if (!v4l2_is_quant_valid(*quantization)) *quantization = V4L2_QUANTIZATION_DEFAULT; if (!v4l2_is_xfer_func_valid(*xfer_func)) *xfer_func = V4L2_XFER_FUNC_DEFAULT; } static void v4l_sanitize_format(struct v4l2_format *fmt) { unsigned int offset; /* Make sure num_planes is not bogus */ if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, VIDEO_MAX_PLANES); /* * The v4l2_pix_format structure has been extended with fields that were * not previously required to be set to zero by applications. The priv * field, when set to a magic value, indicates that the extended fields * are valid. Otherwise they will contain undefined values. To simplify * the API towards drivers zero the extended fields and set the priv * field to the magic value when the extended pixel format structure * isn't used by applications. */ if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) { fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; offset = offsetof(struct v4l2_pix_format, priv) + sizeof(fmt->fmt.pix.priv); memset(((void *)&fmt->fmt.pix) + offset, 0, sizeof(fmt->fmt.pix) - offset); } } /* Replace invalid colorspace values with defaults. */ if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat, &fmt->fmt.pix.colorspace, &fmt->fmt.pix.ycbcr_enc, &fmt->fmt.pix.quantization, &fmt->fmt.pix.xfer_func); } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc; u32 quantization = fmt->fmt.pix_mp.quantization; u32 xfer_func = fmt->fmt.pix_mp.xfer_func; v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat, &fmt->fmt.pix_mp.colorspace, &ycbcr_enc, &quantization, &xfer_func); fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc; fmt->fmt.pix_mp.quantization = quantization; fmt->fmt.pix_mp.xfer_func = xfer_func; } } static int v4l_querycap(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_capability *cap = (struct v4l2_capability *)arg; struct video_device *vfd = video_devdata(file); int ret; cap->version = LINUX_VERSION_CODE; cap->device_caps = vfd->device_caps; cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), vfd->dev_parent); ret = ops->vidioc_querycap(file, fh, cap); /* * Drivers must not change device_caps, so check for this and * warn if this happened. */ WARN_ON(cap->device_caps != vfd->device_caps); /* * Check that capabilities is a superset of * vfd->device_caps | V4L2_CAP_DEVICE_CAPS */ WARN_ON((cap->capabilities & (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 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) { *(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) { *(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) { struct video_device *vfd = video_devdata(file); int ret; ret = v4l_enable_media_source(vfd); if (ret) return ret; if (vfd->device_caps & V4L2_CAP_IO_MC) return *(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 *(int *)arg ? -EINVAL : 0; return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); } static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd; u32 *p = arg; vfd = video_devdata(file); *p = v4l2_prio_max(vfd->prio); return 0; } static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd; struct v4l2_fh *vfh; u32 *p = arg; vfd = video_devdata(file); if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) return -ENOTTY; vfh = file->private_data; return v4l2_prio_change(vfd->prio, &vfh->prio, *p); } static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_input *p = arg; /* * We set the flags for CAP_DV_TIMINGS & * CAP_STD here based on ioctl handler provided by the * driver. If the driver doesn't support these * for a specific input, it must override these flags. */ 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); } static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_output *p = arg; /* * We set the flags for CAP_DV_TIMINGS & * CAP_STD here based on ioctl handler provided by the * driver. If the driver doesn't support these * for a specific output, it must override these flags. */ 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); } static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) { const unsigned sz = sizeof(fmt->description); const char *descr = NULL; u32 flags = 0; /* * We depart from the normal coding style here since the descriptions * should be aligned so it is easy to see which descriptions will be * longer than 31 characters (the max length for a description). * And frankly, this is easier to read anyway. * * Note that gcc will use O(log N) comparisons to find the right case. */ switch (fmt->pixelformat) { /* Max description length mask: descr = "0123456789012345678901234567890" */ case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; case V4L2_PIX_FMT_P010: descr = "10-bit Y/CbCr 4:2:0"; break; case V4L2_PIX_FMT_NV12_4L4: descr = "Y/CbCr 4:2:0 (4x4 Linear)"; break; case V4L2_PIX_FMT_NV12_16L16: descr = "Y/CbCr 4:2:0 (16x16 Linear)"; break; case V4L2_PIX_FMT_NV12_32L32: descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break; case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/CbCr 4:2:0 (4x4 Linear)"; break; case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; default: /* Compressed formats */ flags = V4L2_FMT_FLAG_COMPRESSED; switch (fmt->pixelformat) { /* Max description length mask: descr = "0123456789012345678901234567890" */ case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; case V4L2_PIX_FMT_DV: descr = "1394"; break; case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; case V4L2_PIX_FMT_H264: descr = "H.264"; break; case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; case V4L2_PIX_FMT_H263: descr = "H.263"; break; case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; case V4L2_PIX_FMT_VP8: descr = "VP8"; break; case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; case V4L2_PIX_FMT_VP9: descr = "VP9"; break; case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; default: if (fmt->description[0]) return; WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); flags = 0; snprintf(fmt->description, sz, "%p4cc", &fmt->pixelformat); break; } } if (descr) WARN_ON(strscpy(fmt->description, descr, sz) < 0); fmt->flags |= flags; } static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vdev = video_devdata(file); struct v4l2_fmtdesc *p = arg; int ret = check_fmt(file, p->type); u32 mbus_code; u32 cap_mask; if (ret) return ret; ret = -EINVAL; if (!(vdev->device_caps & V4L2_CAP_IO_MC)) p->mbus_code = 0; mbus_code = p->mbus_code; CLEAR_AFTER_FIELD(p, type); p->mbus_code = mbus_code; switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_M2M_MPLANE; if (!!(vdev->device_caps & cap_mask) != (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) break; if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) break; ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OVERLAY: if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) break; ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OUTPUT: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | V4L2_CAP_VIDEO_M2M_MPLANE; if (!!(vdev->device_caps & cap_mask) != (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) break; if (unlikely(!ops->vidioc_enum_fmt_vid_out)) break; ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); break; case V4L2_BUF_TYPE_SDR_CAPTURE: if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) break; ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); break; case V4L2_BUF_TYPE_SDR_OUTPUT: if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) break; ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); break; case V4L2_BUF_TYPE_META_CAPTURE: if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) break; ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); break; case V4L2_BUF_TYPE_META_OUTPUT: if (unlikely(!ops->vidioc_enum_fmt_meta_out)) break; ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); break; } if (ret == 0) v4l_fill_fmtdesc(p); return ret; } static void v4l_pix_format_touch(struct v4l2_pix_format *p) { /* * The v4l2_pix_format structure contains fields that make no sense for * touch. Set them to default values in this case. */ p->field = V4L2_FIELD_NONE; p->colorspace = V4L2_COLORSPACE_RAW; p->flags = 0; p->ycbcr_enc = 0; p->quantization = 0; p->xfer_func = 0; } static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_format *p = arg; struct video_device *vfd = video_devdata(file); int ret = check_fmt(file, p->type); if (ret) return ret; /* * fmt can't be cleared for these overlay types due to the 'clips' * 'clipcount' and 'bitmap' pointers in struct v4l2_window. * Those are provided by the user. So handle these two overlay types * first, and then just do a simple memset for the other types. */ switch (p->type) { case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { struct v4l2_clip *clips = p->fmt.win.clips; u32 clipcount = p->fmt.win.clipcount; void __user *bitmap = p->fmt.win.bitmap; memset(&p->fmt, 0, sizeof(p->fmt)); p->fmt.win.clips = clips; p->fmt.win.clipcount = clipcount; p->fmt.win.bitmap = bitmap; break; } default: memset(&p->fmt, 0, sizeof(p->fmt)); break; } switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: if (unlikely(!ops->vidioc_g_fmt_vid_cap)) break; p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; if (vfd->vfl_type == VFL_TYPE_TOUCH) v4l_pix_format_touch(&p->fmt.pix); return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: if (unlikely(!ops->vidioc_g_fmt_vid_out)) break; p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: return ops->vidioc_g_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: return ops->vidioc_g_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: return ops->vidioc_g_fmt_meta_cap(file, fh, arg); case V4L2_BUF_TYPE_META_OUTPUT: return ops->vidioc_g_fmt_meta_out(file, fh, arg); } return -EINVAL; } static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_format *p = arg; struct video_device *vfd = video_devdata(file); int ret = check_fmt(file, p->type); unsigned int i; if (ret) return ret; ret = v4l_enable_media_source(vfd); if (ret) return ret; v4l_sanitize_format(p); switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: if (unlikely(!ops->vidioc_s_fmt_vid_cap)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; if (vfd->vfl_type == VFL_TYPE_TOUCH) v4l_pix_format_touch(&p->fmt.pix); return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); for (i = 0; i < p->fmt.pix_mp.num_planes; i++) CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], bytesperline); return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.vbi.flags); return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: if (unlikely(!ops->vidioc_s_fmt_vid_out)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); for (i = 0; i < p->fmt.pix_mp.num_planes; i++) CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], bytesperline); return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: if (unlikely(!ops->vidioc_s_fmt_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.vbi.flags); return ops->vidioc_s_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: if (unlikely(!ops->vidioc_s_fmt_sdr_out)) break; CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); return ops->vidioc_s_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: if (unlikely(!ops->vidioc_s_fmt_meta_cap)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_s_fmt_meta_cap(file, fh, arg); case V4L2_BUF_TYPE_META_OUTPUT: if (unlikely(!ops->vidioc_s_fmt_meta_out)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_s_fmt_meta_out(file, fh, arg); } return -EINVAL; } static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_format *p = arg; struct video_device *vfd = video_devdata(file); int ret = check_fmt(file, p->type); unsigned int i; if (ret) return ret; v4l_sanitize_format(p); switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: if (unlikely(!ops->vidioc_try_fmt_vid_cap)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; if (vfd->vfl_type == VFL_TYPE_TOUCH) v4l_pix_format_touch(&p->fmt.pix); return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); for (i = 0; i < p->fmt.pix_mp.num_planes; i++) CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], bytesperline); return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.vbi.flags); return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: if (unlikely(!ops->vidioc_try_fmt_vid_out)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); for (i = 0; i < p->fmt.pix_mp.num_planes; i++) CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], bytesperline); return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: if (unlikely(!ops->vidioc_try_fmt_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.vbi.flags); return ops->vidioc_try_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: if (unlikely(!ops->vidioc_try_fmt_sdr_out)) break; CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); return ops->vidioc_try_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: if (unlikely(!ops->vidioc_try_fmt_meta_cap)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_try_fmt_meta_cap(file, fh, arg); case V4L2_BUF_TYPE_META_OUTPUT: if (unlikely(!ops->vidioc_try_fmt_meta_out)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_try_fmt_meta_out(file, fh, arg); } return -EINVAL; } static int v4l_streamon(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); } static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); } static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_tuner *p = arg; int err; p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; err = ops->vidioc_g_tuner(file, fh, p); if (!err) p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; return err; } static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_tuner *p = arg; int ret; ret = v4l_enable_media_source(vfd); if (ret) return ret; p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; return ops->vidioc_s_tuner(file, fh, p); } static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_modulator *p = arg; int err; if (vfd->vfl_type == VFL_TYPE_RADIO) p->type = V4L2_TUNER_RADIO; err = ops->vidioc_g_modulator(file, fh, p); if (!err) p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; return err; } static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_modulator *p = arg; if (vfd->vfl_type == VFL_TYPE_RADIO) p->type = V4L2_TUNER_RADIO; return ops->vidioc_s_modulator(file, fh, p); } static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_frequency *p = arg; if (vfd->vfl_type == VFL_TYPE_SDR) p->type = V4L2_TUNER_SDR; else p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; return ops->vidioc_g_frequency(file, fh, p); } static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); const struct v4l2_frequency *p = arg; enum v4l2_tuner_type type; int ret; ret = v4l_enable_media_source(vfd); if (ret) return ret; if (vfd->vfl_type == VFL_TYPE_SDR) { if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) return -EINVAL; } else { type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; if (type != p->type) return -EINVAL; } return ops->vidioc_s_frequency(file, fh, p); } static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_standard *p = arg; return v4l_video_std_enumstd(p, vfd->tvnorms); } static int v4l_s_std(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); v4l2_std_id id = *(v4l2_std_id *)arg, norm; int ret; ret = v4l_enable_media_source(vfd); if (ret) return ret; norm = id & vfd->tvnorms; if (vfd->tvnorms && !norm) /* Check if std is supported */ return -EINVAL; /* Calls the specific handler */ return ops->vidioc_s_std(file, fh, norm); } static int v4l_querystd(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); v4l2_std_id *p = arg; int ret; ret = v4l_enable_media_source(vfd); if (ret) return ret; /* * If no signal is detected, then the driver should return * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with * any standards that do not apply removed. * * This means that tuners, audio and video decoders can join * their efforts to improve the standards detection. */ *p = vfd->tvnorms; return ops->vidioc_querystd(file, fh, arg); } static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_hw_freq_seek *p = arg; enum v4l2_tuner_type type; int ret; ret = v4l_enable_media_source(vfd); if (ret) return ret; /* s_hw_freq_seek is not supported for SDR for now */ if (vfd->vfl_type == VFL_TYPE_SDR) return -EINVAL; type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; if (p->type != type) return -EINVAL; return ops->vidioc_s_hw_freq_seek(file, fh, p); } static int v4l_overlay(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); } static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_requestbuffers *p = arg; int ret = check_fmt(file, p->type); if (ret) return ret; CLEAR_AFTER_FIELD(p, flags); return ops->vidioc_reqbufs(file, fh, p); } static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_buffer *p = arg; int ret = check_fmt(file, p->type); return ret ? ret : ops->vidioc_querybuf(file, fh, p); } static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_buffer *p = arg; int ret = check_fmt(file, p->type); return ret ? ret : ops->vidioc_qbuf(file, fh, p); } static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_buffer *p = arg; int ret = check_fmt(file, p->type); return ret ? ret : ops->vidioc_dqbuf(file, fh, p); } static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_create_buffers *create = arg; int ret = check_fmt(file, create->format.type); if (ret) return ret; CLEAR_AFTER_FIELD(create, flags); v4l_sanitize_format(&create->format); ret = ops->vidioc_create_bufs(file, fh, create); if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; } static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_buffer *b = arg; int ret = check_fmt(file, b->type); return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); } static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_streamparm *p = arg; v4l2_std_id std; int ret = check_fmt(file, p->type); if (ret) return ret; if (ops->vidioc_g_parm) return ops->vidioc_g_parm(file, fh, p); if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; if (vfd->device_caps & V4L2_CAP_READWRITE) p->parm.capture.readbuffers = 2; ret = ops->vidioc_g_std(file, fh, &std); if (ret == 0) v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); return ret; } static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_streamparm *p = arg; int ret = check_fmt(file, p->type); if (ret) return ret; /* Note: extendedmode is never used in drivers */ if (V4L2_TYPE_IS_OUTPUT(p->type)) { memset(p->parm.output.reserved, 0, sizeof(p->parm.output.reserved)); p->parm.output.extendedmode = 0; p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; } else { memset(p->parm.capture.reserved, 0, sizeof(p->parm.capture.reserved)); p->parm.capture.extendedmode = 0; p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; } return ops->vidioc_s_parm(file, fh, p); } static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_queryctrl *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; if (vfh && vfh->ctrl_handler) return v4l2_queryctrl(vfh->ctrl_handler, p); if (vfd->ctrl_handler) return v4l2_queryctrl(vfd->ctrl_handler, p); if (ops->vidioc_queryctrl) return ops->vidioc_queryctrl(file, fh, p); return -ENOTTY; } static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_query_ext_ctrl *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; if (vfh && vfh->ctrl_handler) return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); if (vfd->ctrl_handler) return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); if (ops->vidioc_query_ext_ctrl) return ops->vidioc_query_ext_ctrl(file, fh, p); return -ENOTTY; } static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_querymenu *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; if (vfh && vfh->ctrl_handler) return v4l2_querymenu(vfh->ctrl_handler, p); if (vfd->ctrl_handler) return v4l2_querymenu(vfd->ctrl_handler, p); if (ops->vidioc_querymenu) return ops->vidioc_querymenu(file, fh, p); return -ENOTTY; } static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_control *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; struct v4l2_ext_controls ctrls; struct v4l2_ext_control ctrl; if (vfh && vfh->ctrl_handler) return v4l2_g_ctrl(vfh->ctrl_handler, p); if (vfd->ctrl_handler) return v4l2_g_ctrl(vfd->ctrl_handler, p); if (ops->vidioc_g_ctrl) return ops->vidioc_g_ctrl(file, fh, p); if (ops->vidioc_g_ext_ctrls == NULL) return -ENOTTY; ctrls.which = V4L2_CTRL_ID2WHICH(p->id); ctrls.count = 1; ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value; if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); if (ret == 0) p->value = ctrl.value; return ret; } return -EINVAL; } static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_control *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; struct v4l2_ext_controls ctrls; struct v4l2_ext_control ctrl; int ret; if (vfh && vfh->ctrl_handler) return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); if (vfd->ctrl_handler) return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); if (ops->vidioc_s_ctrl) return ops->vidioc_s_ctrl(file, fh, p); if (ops->vidioc_s_ext_ctrls == NULL) return -ENOTTY; ctrls.which = V4L2_CTRL_ID2WHICH(p->id); ctrls.count = 1; ctrls.controls = &ctrl; ctrl.id = p->id; ctrl.value = p->value; if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) return -EINVAL; ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); p->value = ctrl.value; return ret; } static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_ext_controls *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; p->error_idx = p->count; if (vfh && vfh->ctrl_handler) return v4l2_g_ext_ctrls(vfh->ctrl_handler, vfd, vfd->v4l2_dev->mdev, p); if (vfd->ctrl_handler) return v4l2_g_ext_ctrls(vfd->ctrl_handler, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_g_ext_ctrls == NULL) return -ENOTTY; return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; } static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_ext_controls *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; p->error_idx = p->count; if (vfh && vfh->ctrl_handler) return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, vfd, vfd->v4l2_dev->mdev, p); if (vfd->ctrl_handler) return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_s_ext_ctrls == NULL) return -ENOTTY; return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; } static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_ext_controls *p = arg; struct v4l2_fh *vfh = test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; p->error_idx = p->count; if (vfh && vfh->ctrl_handler) return v4l2_try_ext_ctrls(vfh->ctrl_handler, vfd, vfd->v4l2_dev->mdev, p); if (vfd->ctrl_handler) return v4l2_try_ext_ctrls(vfd->ctrl_handler, vfd, vfd->v4l2_dev->mdev, p); if (ops->vidioc_try_ext_ctrls == NULL) return -ENOTTY; return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; } /* * The selection API specified originally that the _MPLANE buffer types * shouldn't be used. The reasons for this are lost in the mists of time * (or just really crappy memories). Regardless, this is really annoying * for userspace. So to keep things simple we map _MPLANE buffer types * to their 'regular' counterparts before calling the driver. And we * restore it afterwards. This way applications can use either buffer * type and drivers don't need to check for both. */ static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_selection *p = arg; u32 old_type = p->type; int ret; if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; ret = ops->vidioc_g_selection(file, fh, p); p->type = old_type; return ret; } static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_selection *p = arg; u32 old_type = p->type; int ret; if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; ret = ops->vidioc_s_selection(file, fh, p); p->type = old_type; return ret; } static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_crop *p = arg; struct v4l2_selection s = { .type = p->type, }; int ret; /* simulate capture crop using selection api */ /* crop means compose for output devices */ if (V4L2_TYPE_IS_OUTPUT(p->type)) s.target = V4L2_SEL_TGT_COMPOSE; else s.target = V4L2_SEL_TGT_CROP; if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) s.target = s.target == V4L2_SEL_TGT_COMPOSE ? V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; ret = v4l_g_selection(ops, file, fh, &s); /* copying results to old structure on success */ if (!ret) p->c = s.r; return ret; } static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_crop *p = arg; struct v4l2_selection s = { .type = p->type, .r = p->c, }; /* simulate capture crop using selection api */ /* crop means compose for output devices */ if (V4L2_TYPE_IS_OUTPUT(p->type)) s.target = V4L2_SEL_TGT_COMPOSE; else s.target = V4L2_SEL_TGT_CROP; if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) s.target = s.target == V4L2_SEL_TGT_COMPOSE ? V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; return v4l_s_selection(ops, file, fh, &s); } static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_cropcap *p = arg; struct v4l2_selection s = { .type = p->type }; int ret = 0; /* setting trivial pixelaspect */ p->pixelaspect.numerator = 1; p->pixelaspect.denominator = 1; if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; /* * The determine_valid_ioctls() call already should ensure * that this can never happen, but just in case... */ if (WARN_ON(!ops->vidioc_g_selection)) return -ENOTTY; if (ops->vidioc_g_pixelaspect) ret = ops->vidioc_g_pixelaspect(file, fh, s.type, &p->pixelaspect); /* * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the * square pixel aspect ratio in that case. */ if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) return ret; /* Use g_selection() to fill in the bounds and defrect rectangles */ /* obtaining bounds */ if (V4L2_TYPE_IS_OUTPUT(p->type)) s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; else s.target = V4L2_SEL_TGT_CROP_BOUNDS; if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; ret = v4l_g_selection(ops, file, fh, &s); if (ret) return ret; p->bounds = s.r; /* obtaining defrect */ if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; else s.target = V4L2_SEL_TGT_CROP_DEFAULT; ret = v4l_g_selection(ops, file, fh, &s); if (ret) return ret; p->defrect = s.r; return 0; } static int v4l_log_status(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); int ret; if (vfd->v4l2_dev) pr_info("%s: ================= START STATUS =================\n", vfd->v4l2_dev->name); ret = ops->vidioc_log_status(file, fh); if (vfd->v4l2_dev) pr_info("%s: ================== END STATUS ==================\n", vfd->v4l2_dev->name); return ret; } static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { #ifdef CONFIG_VIDEO_ADV_DEBUG struct v4l2_dbg_register *p = arg; struct video_device *vfd = video_devdata(file); struct v4l2_subdev *sd; int idx = 0; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { if (vfd->v4l2_dev == NULL) return -EINVAL; v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) if (p->match.addr == idx++) return v4l2_subdev_call(sd, core, g_register, p); return -EINVAL; } if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && (ops->vidioc_g_chip_info || p->match.addr == 0)) return ops->vidioc_g_register(file, fh, p); return -EINVAL; #else return -ENOTTY; #endif } static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { #ifdef CONFIG_VIDEO_ADV_DEBUG const struct v4l2_dbg_register *p = arg; struct video_device *vfd = video_devdata(file); struct v4l2_subdev *sd; int idx = 0; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { if (vfd->v4l2_dev == NULL) return -EINVAL; v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) if (p->match.addr == idx++) return v4l2_subdev_call(sd, core, s_register, p); return -EINVAL; } if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && (ops->vidioc_g_chip_info || p->match.addr == 0)) return ops->vidioc_s_register(file, fh, p); return -EINVAL; #else return -ENOTTY; #endif } static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { #ifdef CONFIG_VIDEO_ADV_DEBUG struct video_device *vfd = video_devdata(file); struct v4l2_dbg_chip_info *p = arg; struct v4l2_subdev *sd; int idx = 0; switch (p->match.type) { case V4L2_CHIP_MATCH_BRIDGE: if (ops->vidioc_s_register) p->flags |= V4L2_CHIP_FL_WRITABLE; if (ops->vidioc_g_register) p->flags |= V4L2_CHIP_FL_READABLE; strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); if (ops->vidioc_g_chip_info) return ops->vidioc_g_chip_info(file, fh, arg); if (p->match.addr) return -EINVAL; return 0; case V4L2_CHIP_MATCH_SUBDEV: if (vfd->v4l2_dev == NULL) break; v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { if (p->match.addr != idx++) continue; if (sd->ops->core && sd->ops->core->s_register) p->flags |= V4L2_CHIP_FL_WRITABLE; if (sd->ops->core && sd->ops->core->g_register) p->flags |= V4L2_CHIP_FL_READABLE; strscpy(p->name, sd->name, sizeof(p->name)); return 0; } break; } return -EINVAL; #else return -ENOTTY; #endif } static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); } static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { return ops->vidioc_subscribe_event(fh, arg); } static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { return ops->vidioc_unsubscribe_event(fh, arg); } static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_sliced_vbi_cap *p = arg; int ret = check_fmt(file, p->type); if (ret) return ret; /* Clear up to type, everything after type is zeroed already */ memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); return ops->vidioc_g_sliced_vbi_cap(file, fh, p); } static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct video_device *vfd = video_devdata(file); struct v4l2_frequency_band *p = arg; enum v4l2_tuner_type type; int err; if (vfd->vfl_type == VFL_TYPE_SDR) { if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) return -EINVAL; type = p->type; } else { type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; if (type != p->type) return -EINVAL; } if (ops->vidioc_enum_freq_bands) { err = ops->vidioc_enum_freq_bands(file, fh, p); if (err != -ENOTTY) return err; } if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { struct v4l2_tuner t = { .index = p->tuner, .type = type, }; if (p->index) return -EINVAL; err = ops->vidioc_g_tuner(file, fh, &t); if (err) return err; p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; p->rangelow = t.rangelow; p->rangehigh = t.rangehigh; p->modulation = (type == V4L2_TUNER_RADIO) ? V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; return 0; } if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { struct v4l2_modulator m = { .index = p->tuner, }; if (type != V4L2_TUNER_RADIO) return -EINVAL; if (p->index) return -EINVAL; err = ops->vidioc_g_modulator(file, fh, &m); if (err) return err; p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; p->rangelow = m.rangelow; p->rangehigh = m.rangehigh; p->modulation = (type == V4L2_TUNER_RADIO) ? V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; return 0; } return -ENOTTY; } struct v4l2_ioctl_info { unsigned int ioctl; u32 flags; const char * const name; int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *p); void (*debug)(const void *arg, bool write_only); }; /* This control needs a priority check */ #define INFO_FL_PRIO (1 << 0) /* This control can be valid if the filehandle passes a control handler. */ #define INFO_FL_CTRL (1 << 1) /* Queuing ioctl */ #define INFO_FL_QUEUE (1 << 2) /* Always copy back result, even on error */ #define INFO_FL_ALWAYS_COPY (1 << 3) /* Zero struct from after the field to the end */ #define INFO_FL_CLEAR(v4l2_struct, field) \ ((offsetof(struct v4l2_struct, field) + \ sizeof_field(struct v4l2_struct, field)) << 16) #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) #define DEFINE_V4L_STUB_FUNC(_vidioc) \ static int v4l_stub_ ## _vidioc( \ const struct v4l2_ioctl_ops *ops, \ struct file *file, void *fh, void *p) \ { \ return ops->vidioc_ ## _vidioc(file, fh, p); \ } #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ [_IOC_NR(_ioctl)] = { \ .ioctl = _ioctl, \ .flags = _flags, \ .name = #_ioctl, \ .func = _func, \ .debug = _debug, \ } DEFINE_V4L_STUB_FUNC(g_fbuf) DEFINE_V4L_STUB_FUNC(s_fbuf) 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_edid) DEFINE_V4L_STUB_FUNC(s_edid) DEFINE_V4L_STUB_FUNC(g_audout) DEFINE_V4L_STUB_FUNC(s_audout) DEFINE_V4L_STUB_FUNC(g_jpegcomp) DEFINE_V4L_STUB_FUNC(s_jpegcomp) DEFINE_V4L_STUB_FUNC(enumaudio) DEFINE_V4L_STUB_FUNC(enumaudout) DEFINE_V4L_STUB_FUNC(enum_framesizes) DEFINE_V4L_STUB_FUNC(enum_frameintervals) DEFINE_V4L_STUB_FUNC(g_enc_index) DEFINE_V4L_STUB_FUNC(encoder_cmd) DEFINE_V4L_STUB_FUNC(try_encoder_cmd) DEFINE_V4L_STUB_FUNC(decoder_cmd) DEFINE_V4L_STUB_FUNC(try_decoder_cmd) DEFINE_V4L_STUB_FUNC(s_dv_timings) DEFINE_V4L_STUB_FUNC(g_dv_timings) DEFINE_V4L_STUB_FUNC(enum_dv_timings) DEFINE_V4L_STUB_FUNC(query_dv_timings) DEFINE_V4L_STUB_FUNC(dv_timings_cap) static const struct v4l2_ioctl_info v4l2_ioctls[] = { IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 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_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_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), IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)), IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)), IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), }; #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) static bool v4l2_is_known_ioctl(unsigned int cmd) { if (_IOC_NR(cmd) >= V4L2_IOCTLS) return false; return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; } static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, struct v4l2_fh *vfh, unsigned int cmd, void *arg) { if (_IOC_NR(cmd) >= V4L2_IOCTLS) return vdev->lock; if (vfh && vfh->m2m_ctx && (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { if (vfh->m2m_ctx->q_lock) return vfh->m2m_ctx->q_lock; } if (vdev->queue && vdev->queue->lock && (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) return vdev->queue->lock; return vdev->lock; } /* Common ioctl debug function. This function can be used by external ioctl messages as well as internal V4L ioctl */ void v4l_printk_ioctl(const char *prefix, unsigned int cmd) { const char *dir, *type; if (prefix) printk(KERN_DEBUG "%s: ", prefix); switch (_IOC_TYPE(cmd)) { case 'd': type = "v4l2_int"; break; case 'V': if (_IOC_NR(cmd) >= V4L2_IOCTLS) { type = "v4l2"; break; } pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); return; default: type = "unknown"; break; } switch (_IOC_DIR(cmd)) { case _IOC_NONE: dir = "--"; break; case _IOC_READ: dir = "r-"; break; case _IOC_WRITE: dir = "-w"; break; case _IOC_READ | _IOC_WRITE: dir = "rw"; break; default: dir = "*ERR*"; break; } pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); } EXPORT_SYMBOL(v4l_printk_ioctl); static long __video_do_ioctl(struct file *file, unsigned int cmd, void *arg) { struct video_device *vfd = video_devdata(file); struct mutex *req_queue_lock = NULL; struct mutex *lock; /* ioctl serialization mutex */ const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; bool write_only = false; struct v4l2_ioctl_info default_info; const struct v4l2_ioctl_info *info; void *fh = file->private_data; struct v4l2_fh *vfh = NULL; int dev_debug = vfd->dev_debug; long ret = -ENOTTY; if (ops == NULL) { pr_warn("%s: has no ioctl_ops.\n", video_device_node_name(vfd)); return ret; } if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) vfh = file->private_data; /* * We need to serialize streamon/off with queueing new requests. * These ioctls may trigger the cancellation of a streaming * operation, and that should not be mixed with queueing a new * request at the same time. */ if (v4l2_device_supports_requests(vfd->v4l2_dev) && (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; if (mutex_lock_interruptible(req_queue_lock)) return -ERESTARTSYS; } lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); if (lock && mutex_lock_interruptible(lock)) { if (req_queue_lock) mutex_unlock(req_queue_lock); return -ERESTARTSYS; } if (!video_is_registered(vfd)) { ret = -ENODEV; goto unlock; } if (v4l2_is_known_ioctl(cmd)) { info = &v4l2_ioctls[_IOC_NR(cmd)]; if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) goto done; if (vfh && (info->flags & INFO_FL_PRIO)) { ret = v4l2_prio_check(vfd->prio, vfh->prio); if (ret) goto done; } } else { default_info.ioctl = cmd; default_info.flags = 0; default_info.debug = v4l_print_default; info = &default_info; } write_only = _IOC_DIR(cmd) == _IOC_WRITE; if (info != &default_info) { ret = info->func(ops, file, fh, arg); } else if (!ops->vidioc_default) { ret = -ENOTTY; } else { ret = ops->vidioc_default(file, fh, vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, cmd, arg); } done: if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) goto unlock; v4l_printk_ioctl(video_device_node_name(vfd), cmd); if (ret < 0) pr_cont(": error %ld", ret); if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) pr_cont("\n"); else if (_IOC_DIR(cmd) == _IOC_NONE) info->debug(arg, write_only); else { pr_cont(": "); info->debug(arg, write_only); } } unlock: if (lock) mutex_unlock(lock); if (req_queue_lock) mutex_unlock(req_queue_lock); return ret; } static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, void __user **user_ptr, void ***kernel_ptr) { int ret = 0; switch (cmd) { case VIDIOC_PREPARE_BUF: case VIDIOC_QUERYBUF: case VIDIOC_QBUF: case VIDIOC_DQBUF: { struct v4l2_buffer *buf = parg; if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { if (buf->length > VIDEO_MAX_PLANES) { ret = -EINVAL; break; } *user_ptr = (void __user *)buf->m.planes; *kernel_ptr = (void **)&buf->m.planes; *array_size = sizeof(struct v4l2_plane) * buf->length; ret = 1; } break; } case VIDIOC_G_EDID: case VIDIOC_S_EDID: { struct v4l2_edid *edid = parg; if (edid->blocks) { if (edid->blocks > 256) { ret = -EINVAL; break; } *user_ptr = (void __user *)edid->edid; *kernel_ptr = (void **)&edid->edid; *array_size = edid->blocks * 128; ret = 1; } break; } case VIDIOC_S_EXT_CTRLS: case VIDIOC_G_EXT_CTRLS: case VIDIOC_TRY_EXT_CTRLS: { struct v4l2_ext_controls *ctrls = parg; if (ctrls->count != 0) { if (ctrls->count > V4L2_CID_MAX_CTRLS) { ret = -EINVAL; break; } *user_ptr = (void __user *)ctrls->controls; *kernel_ptr = (void **)&ctrls->controls; *array_size = sizeof(struct v4l2_ext_control) * ctrls->count; ret = 1; } break; } case VIDIOC_G_FMT: case VIDIOC_S_FMT: case VIDIOC_TRY_FMT: { struct v4l2_format *fmt = parg; if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) break; if (fmt->fmt.win.clipcount > 2048) return -EINVAL; if (!fmt->fmt.win.clipcount) break; *user_ptr = (void __user *)fmt->fmt.win.clips; *kernel_ptr = (void **)&fmt->fmt.win.clips; *array_size = sizeof(struct v4l2_clip) * fmt->fmt.win.clipcount; ret = 1; break; } } return ret; } static unsigned int video_translate_cmd(unsigned int cmd) { #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) switch (cmd) { case VIDIOC_DQEVENT_TIME32: return VIDIOC_DQEVENT; case VIDIOC_QUERYBUF_TIME32: return VIDIOC_QUERYBUF; case VIDIOC_QBUF_TIME32: return VIDIOC_QBUF; case VIDIOC_DQBUF_TIME32: return VIDIOC_DQBUF; case VIDIOC_PREPARE_BUF_TIME32: return VIDIOC_PREPARE_BUF; } #endif if (in_compat_syscall()) return v4l2_compat_translate_cmd(cmd); return cmd; } static int video_get_user(void __user *arg, void *parg, unsigned int real_cmd, unsigned int cmd, bool *always_copy) { unsigned int n = _IOC_SIZE(real_cmd); int err = 0; if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { /* read-only ioctl */ memset(parg, 0, n); return 0; } /* * In some cases, only a few fields are used as input, * i.e. when the app sets "index" and then the driver * fills in the rest of the structure for the thing * with that index. We only need to copy up the first * non-input field. */ if (v4l2_is_known_ioctl(real_cmd)) { u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; if (flags & INFO_FL_CLEAR_MASK) n = (flags & INFO_FL_CLEAR_MASK) >> 16; *always_copy = flags & INFO_FL_ALWAYS_COPY; } if (cmd == real_cmd) { if (copy_from_user(parg, (void __user *)arg, n)) err = -EFAULT; } else if (in_compat_syscall()) { memset(parg, 0, n); err = v4l2_compat_get_user(arg, parg, cmd); } else { memset(parg, 0, n); #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) switch (cmd) { case VIDIOC_QUERYBUF_TIME32: case VIDIOC_QBUF_TIME32: case VIDIOC_DQBUF_TIME32: case VIDIOC_PREPARE_BUF_TIME32: { struct v4l2_buffer_time32 vb32; struct v4l2_buffer *vb = parg; if (copy_from_user(&vb32, arg, sizeof(vb32))) return -EFAULT; *vb = (struct v4l2_buffer) { .index = vb32.index, .type = vb32.type, .bytesused = vb32.bytesused, .flags = vb32.flags, .field = vb32.field, .timestamp.tv_sec = vb32.timestamp.tv_sec, .timestamp.tv_usec = vb32.timestamp.tv_usec, .timecode = vb32.timecode, .sequence = vb32.sequence, .memory = vb32.memory, .m.userptr = vb32.m.userptr, .length = vb32.length, .request_fd = vb32.request_fd, }; break; } } #endif } /* zero out anything we don't copy from userspace */ if (!err && n < _IOC_SIZE(real_cmd)) memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); return err; } static int video_put_user(void __user *arg, void *parg, unsigned int real_cmd, unsigned int cmd) { if (!(_IOC_DIR(cmd) & _IOC_READ)) return 0; if (cmd == real_cmd) { /* Copy results into user buffer */ if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) return -EFAULT; return 0; } if (in_compat_syscall()) return v4l2_compat_put_user(arg, parg, cmd); #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) switch (cmd) { case VIDIOC_DQEVENT_TIME32: { struct v4l2_event *ev = parg; struct v4l2_event_time32 ev32; memset(&ev32, 0, sizeof(ev32)); ev32.type = ev->type; ev32.pending = ev->pending; ev32.sequence = ev->sequence; ev32.timestamp.tv_sec = ev->timestamp.tv_sec; ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; ev32.id = ev->id; memcpy(&ev32.u, &ev->u, sizeof(ev->u)); memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); if (copy_to_user(arg, &ev32, sizeof(ev32))) return -EFAULT; break; } case VIDIOC_QUERYBUF_TIME32: case VIDIOC_QBUF_TIME32: case VIDIOC_DQBUF_TIME32: case VIDIOC_PREPARE_BUF_TIME32: { struct v4l2_buffer *vb = parg; struct v4l2_buffer_time32 vb32; memset(&vb32, 0, sizeof(vb32)); vb32.index = vb->index; vb32.type = vb->type; vb32.bytesused = vb->bytesused; vb32.flags = vb->flags; vb32.field = vb->field; vb32.timestamp.tv_sec = vb->timestamp.tv_sec; vb32.timestamp.tv_usec = vb->timestamp.tv_usec; vb32.timecode = vb->timecode; vb32.sequence = vb->sequence; vb32.memory = vb->memory; vb32.m.userptr = vb->m.userptr; vb32.length = vb->length; vb32.request_fd = vb->request_fd; if (copy_to_user(arg, &vb32, sizeof(vb32))) return -EFAULT; break; } } #endif return 0; } long video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, v4l2_kioctl func) { char sbuf[128]; void *mbuf = NULL, *array_buf = NULL; void *parg = (void *)arg; long err = -EINVAL; bool has_array_args; bool always_copy = false; size_t array_size = 0; void __user *user_ptr = NULL; void **kernel_ptr = NULL; unsigned int cmd = video_translate_cmd(orig_cmd); const size_t ioc_size = _IOC_SIZE(cmd); /* Copy arguments into temp kernel buffer */ if (_IOC_DIR(cmd) != _IOC_NONE) { if (ioc_size <= sizeof(sbuf)) { parg = sbuf; } else { /* too big to allocate from stack */ mbuf = kmalloc(ioc_size, GFP_KERNEL); if (NULL == mbuf) return -ENOMEM; parg = mbuf; } err = video_get_user((void __user *)arg, parg, cmd, orig_cmd, &always_copy); if (err) goto out; } err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); if (err < 0) goto out; has_array_args = err; if (has_array_args) { array_buf = kvmalloc(array_size, GFP_KERNEL); err = -ENOMEM; if (array_buf == NULL) goto out; if (in_compat_syscall()) err = v4l2_compat_get_array_args(file, array_buf, user_ptr, array_size, orig_cmd, parg); else err = copy_from_user(array_buf, user_ptr, array_size) ? -EFAULT : 0; if (err) goto out; *kernel_ptr = array_buf; } /* Handles IOCTL */ err = func(file, cmd, parg); if (err == -ENOTTY || err == -ENOIOCTLCMD) { err = -ENOTTY; goto out; } if (err == 0) { if (cmd == VIDIOC_DQBUF) trace_v4l2_dqbuf(video_devdata(file)->minor, parg); else if (cmd == VIDIOC_QBUF) trace_v4l2_qbuf(video_devdata(file)->minor, parg); } /* * Some ioctls can return an error, but still have valid * results that must be returned. */ if (err < 0 && !always_copy) goto out; if (has_array_args) { *kernel_ptr = (void __force *)user_ptr; if (in_compat_syscall()) { int put_err; put_err = v4l2_compat_put_array_args(file, user_ptr, array_buf, array_size, orig_cmd, parg); if (put_err) err = put_err; } else if (copy_to_user(user_ptr, array_buf, array_size)) { err = -EFAULT; } } if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) err = -EFAULT; out: kvfree(array_buf); kfree(mbuf); return err; } long video_ioctl2(struct file *file, unsigned int cmd, unsigned long arg) { return video_usercopy(file, cmd, arg, __video_do_ioctl); } EXPORT_SYMBOL(video_ioctl2);
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