| /* |
| * Video capture interface for Linux version 2 |
| * |
| * A generic framework to process V4L2 ioctl commands. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) |
| * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2) |
| */ |
| |
| #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/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 <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 comparations. 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; |
| strlcpy(vs->name, name, sizeof(vs->name)); |
| return 0; |
| } |
| EXPORT_SYMBOL(v4l2_video_std_construct); |
| |
| /* ----------------------------------------------------------------- */ |
| /* 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", |
| }; |
| 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=%c%c%c%c, description='%.*s'\n", |
| p->index, prt_names(p->type, v4l2_type_names), |
| p->flags, (p->pixelformat & 0xff), |
| (p->pixelformat >> 8) & 0xff, |
| (p->pixelformat >> 16) & 0xff, |
| (p->pixelformat >> 24) & 0xff, |
| (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_sdr_format *sdr; |
| 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=%c%c%c%c, 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 & 0xff), |
| (pix->pixelformat >> 8) & 0xff, |
| (pix->pixelformat >> 16) & 0xff, |
| (pix->pixelformat >> 24) & 0xff, |
| 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; |
| pr_cont(", width=%u, height=%u, " |
| "format=%c%c%c%c, field=%s, " |
| "colorspace=%d, num_planes=%u, flags=0x%x, " |
| "ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", |
| mp->width, mp->height, |
| (mp->pixelformat & 0xff), |
| (mp->pixelformat >> 8) & 0xff, |
| (mp->pixelformat >> 16) & 0xff, |
| (mp->pixelformat >> 24) & 0xff, |
| prt_names(mp->field, v4l2_field_names), |
| mp->colorspace, mp->num_planes, mp->flags, |
| mp->ycbcr_enc, mp->quantization, mp->xfer_func); |
| for (i = 0; i < mp->num_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=%c%c%c%c, start=%u,%u, count=%u,%u\n", |
| vbi->sampling_rate, vbi->offset, |
| vbi->samples_per_line, |
| (vbi->sample_format & 0xff), |
| (vbi->sample_format >> 8) & 0xff, |
| (vbi->sample_format >> 16) & 0xff, |
| (vbi->sample_format >> 24) & 0xff, |
| 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: |
| sdr = &p->fmt.sdr; |
| pr_cont(", pixelformat=%c%c%c%c\n", |
| (sdr->pixelformat >> 0) & 0xff, |
| (sdr->pixelformat >> 8) & 0xff, |
| (sdr->pixelformat >> 16) & 0xff, |
| (sdr->pixelformat >> 24) & 0xff); |
| 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=%c%c%c%c, " |
| "bytesperline=%u, sizeimage=%u, colorspace=%d\n", |
| p->capability, p->flags, p->base, |
| p->fmt.width, p->fmt.height, |
| (p->fmt.pixelformat & 0xff), |
| (p->fmt.pixelformat >> 8) & 0xff, |
| (p->fmt.pixelformat >> 16) & 0xff, |
| (p->fmt.pixelformat >> 24) & 0xff, |
| 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("%02ld:%02d:%02d.%08ld index=%d, type=%s, " |
| "flags=0x%08x, field=%s, sequence=%d, memory=%s", |
| 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->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, ", |
| p->index, p->count, |
| prt_names(p->memory, v4l2_memory_names)); |
| 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; |
| |
| 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", |
| p->which, p->count, p->error_idx); |
| for (i = 0; i < p->count; i++) { |
| if (!p->controls[i].size) |
| pr_cont(", id/val=0x%x/0x%x", |
| p->controls[i].id, p->controls[i].value); |
| else |
| pr_cont(", id/size=0x%x/%u", |
| p->controls[i].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=%c%c%c%c, type=%u", |
| p->index, |
| (p->pixel_format & 0xff), |
| (p->pixel_format >> 8) & 0xff, |
| (p->pixel_format >> 16) & 0xff, |
| (p->pixel_format >> 24) & 0xff, |
| 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.step_width, p->stepwise.step_height, |
| p->stepwise.max_width, p->stepwise.max_height); |
| break; |
| case V4L2_FRMSIZE_TYPE_CONTINUOUS: |
| /* fall through */ |
| 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=%c%c%c%c, wxh=%ux%u, type=%u", |
| p->index, |
| (p->pixel_format & 0xff), |
| (p->pixel_format >> 8) & 0xff, |
| (p->pixel_format >> 16) & 0xff, |
| (p->pixel_format >> 24) & 0xff, |
| 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: |
| /* fall through */ |
| 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=%lu.%9.9lu\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 int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) |
| { |
| __u32 i; |
| |
| /* zero the reserved fields */ |
| c->reserved[0] = c->reserved[1] = 0; |
| for (i = 0; i < c->count; i++) |
| c->controls[i].reserved2[0] = 0; |
| |
| /* 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 (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) |
| return 0; |
| if (!c->which) |
| return 1; |
| /* 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 = i; |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| static int check_fmt(struct file *file, enum v4l2_buf_type type) |
| { |
| struct video_device *vfd = video_devdata(file); |
| const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; |
| bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; |
| 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_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_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; |
| default: |
| break; |
| } |
| return -EINVAL; |
| } |
| |
| static void v4l_sanitize_format(struct v4l2_format *fmt) |
| { |
| unsigned int offset; |
| |
| /* |
| * 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 the 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) |
| return; |
| |
| if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) |
| return; |
| |
| 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); |
| } |
| |
| 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; |
| |
| ret = ops->vidioc_querycap(file, fh, cap); |
| |
| cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; |
| /* |
| * Drivers MUST fill in device_caps, so check for this and |
| * warn if it was forgotten. |
| */ |
| WARN(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) || |
| !cap->device_caps, "Bad caps for driver %s, %x %x", |
| cap->driver, cap->capabilities, cap->device_caps); |
| cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; |
| |
| return ret; |
| } |
| |
| 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; |
| 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) |
| { |
| 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; |
| |
| 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; |
| |
| 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_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_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_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_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_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_YUV32: descr = "32-bit A/XYUV 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_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; 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_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_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_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_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_SBGGR16: descr = "16-bit Bayer BGBG/GRGR (Exp.)"; 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_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_PIX_FMT_NV12_UBWC: |
| descr = "NV12 UBWC"; break; |
| case V4L2_PIX_FMT_RGBA8888_UBWC: |
| descr = "RGBA8888 UBWC"; break; |
| case V4L2_PIX_FMT_SDE_ABGR_8888: |
| descr = "32-bit ABGR 8-8-8-8"; break; |
| case V4L2_PIX_FMT_SDE_RGBA_8888: |
| descr = "32-bit RGBA 8-8-8-8"; break; |
| case V4L2_PIX_FMT_SDE_RGBX_8888: |
| descr = "32-bit RGBX 8-8-8-8"; break; |
| case V4L2_PIX_FMT_SDE_XBGR_8888: |
| descr = "32-bit XBGR 8-8-8-8"; break; |
| case V4L2_PIX_FMT_SDE_RGBA_5551: |
| descr = "16-bit RGBA 5-5-5-1"; break; |
| case V4L2_PIX_FMT_SDE_ABGR_1555: |
| descr = "16-bit ABGR 1-5-5-5"; break; |
| case V4L2_PIX_FMT_SDE_BGRA_5551: |
| descr = "16-bit BGRA 5-5-5-1"; break; |
| case V4L2_PIX_FMT_SDE_BGRX_5551: |
| descr = "16-bit BGRX 5-5-5-1"; break; |
| case V4L2_PIX_FMT_SDE_RGBX_5551: |
| descr = "16-bit RGBX 5-5-5-1"; break; |
| case V4L2_PIX_FMT_SDE_XBGR_1555: |
| descr = "16-bit XBGR 1-5-5-5"; break; |
| case V4L2_PIX_FMT_SDE_RGBA_4444: |
| descr = "16-bit RGBA 4-4-4-4"; break; |
| case V4L2_PIX_FMT_SDE_BGRA_4444: |
| descr = "16-bit BGRA 4-4-4-4"; break; |
| case V4L2_PIX_FMT_SDE_ABGR_4444: |
| descr = "16-bit ABGR 4-4-4-4"; break; |
| case V4L2_PIX_FMT_SDE_RGBX_4444: |
| descr = "16-bit RGBX 4-4-4-4"; break; |
| case V4L2_PIX_FMT_SDE_BGRX_4444: |
| descr = "16-bit BGRX 4-4-4-4"; break; |
| case V4L2_PIX_FMT_SDE_XBGR_4444: |
| descr = "16-bit XBGR 4-4-4-4"; break; |
| case V4L2_PIX_FMT_SDE_BGR_565: |
| descr = "16-bit BGR 5-6-5"; break; |
| case V4L2_PIX_FMT_SDE_Y_CR_CB_GH2V2: |
| descr = "Planar YVU 4:2:0 A16"; break; |
| case V4L2_PIX_FMT_SDE_Y_CBCR_H1V2: |
| descr = "Y/CbCr 4:2:2"; break; |
| case V4L2_PIX_FMT_SDE_Y_CRCB_H1V2: |
| descr = "Y/CrCb 4:2:2"; break; |
| case V4L2_PIX_FMT_SDE_Y_CBCR_H2V2_VENUS: |
| descr = "Y/CbCr 4:2:0 Venus"; break; |
| case V4L2_PIX_FMT_SDE_Y_CRCB_H2V2_VENUS: |
| descr = "Y/CrCb 4:2:0 Venus"; break; |
| case V4L2_PIX_FMT_SDE_RGBX_8888_UBWC: |
| descr = "RGBX 8:8:8:8 UBWC"; break; |
| case V4L2_PIX_FMT_SDE_RGB_565_UBWC: |
| descr = "RGB 5:6:5 UBWC"; break; |
| case V4L2_PIX_FMT_SDE_RGBA_1010102: |
| descr = "RGBA 10:10:10:2"; break; |
| case V4L2_PIX_FMT_SDE_RGBX_1010102: |
| descr = "RGBX 10:10:10:2"; break; |
| case V4L2_PIX_FMT_SDE_ARGB_2101010: |
| descr = "ARGB 2:10:10:10"; break; |
| case V4L2_PIX_FMT_SDE_XRGB_2101010: |
| descr = "XRGB 2:10:10:10"; break; |
| case V4L2_PIX_FMT_SDE_BGRA_1010102: |
| descr = "BGRA 10:10:10:2"; break; |
| case V4L2_PIX_FMT_SDE_BGRX_1010102: |
| descr = "BGRX 10:10:10:2"; break; |
| case V4L2_PIX_FMT_SDE_ABGR_2101010: |
| descr = "ABGR 2:10:10:10"; break; |
| case V4L2_PIX_FMT_SDE_XBGR_2101010: |
| descr = "XBGR 2:10:10:10"; break; |
| case V4L2_PIX_FMT_SDE_RGBA_1010102_UBWC: |
| descr = "RGBA 10:10:10:2 UBWC"; break; |
| case V4L2_PIX_FMT_SDE_RGBX_1010102_UBWC: |
| descr = "RGBX 10:10:10:2 UBWC"; break; |
| case V4L2_PIX_FMT_SDE_Y_CBCR_H2V2_TP10: |
| descr = "Y/CbCr 4:2:0 TP10"; break; |
| case V4L2_PIX_FMT_SDE_Y_CBCR_H2V2_P010: |
| descr = "Y/CbCr 4:2:0 P10"; break; |
| case V4L2_PIX_FMT_NV12_TP10_UBWC: |
| descr = "Y/CbCr 4:2:0 TP10 UBWC"; 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_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_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_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; |
| default: |
| WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); |
| if (fmt->description[0]) |
| return; |
| flags = 0; |
| snprintf(fmt->description, sz, "%c%c%c%c%s", |
| (char)(fmt->pixelformat & 0x7f), |
| (char)((fmt->pixelformat >> 8) & 0x7f), |
| (char)((fmt->pixelformat >> 16) & 0x7f), |
| (char)((fmt->pixelformat >> 24) & 0x7f), |
| (fmt->pixelformat & (1 << 31)) ? "-BE" : ""); |
| break; |
| } |
| } |
| |
| if (descr) |
| WARN_ON(strlcpy(fmt->description, descr, sz) >= sz); |
| fmt->flags = flags; |
| } |
| |
| static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, |
| struct file *file, void *fh, void *arg) |
| { |
| struct v4l2_fmtdesc *p = arg; |
| struct video_device *vfd = video_devdata(file); |
| bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; |
| bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; |
| bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; |
| bool is_rx = vfd->vfl_dir != VFL_DIR_TX; |
| bool is_tx = vfd->vfl_dir != VFL_DIR_RX; |
| int ret = -EINVAL; |
| |
| switch (p->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_enum_fmt_vid_cap)) |
| break; |
| ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: |
| if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane)) |
| break; |
| ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay)) |
| break; |
| ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out)) |
| break; |
| ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: |
| if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane)) |
| break; |
| ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg); |
| break; |
| case V4L2_BUF_TYPE_SDR_CAPTURE: |
| if (unlikely(!is_rx || !is_sdr || !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(!is_tx || !is_sdr || !ops->vidioc_enum_fmt_sdr_out)) |
| break; |
| ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); |
| break; |
| } |
| if (ret == 0) |
| v4l_fill_fmtdesc(p); |
| return ret; |
| } |
| |
| 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); |
| bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; |
| bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; |
| bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; |
| bool is_rx = vfd->vfl_dir != VFL_DIR_TX; |
| bool is_tx = vfd->vfl_dir != VFL_DIR_RX; |
| int 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 __user *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(!is_rx || (!is_vid && !is_tch) || !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; |
| return ret; |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: |
| if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane)) |
| break; |
| return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay)) |
| break; |
| return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); |
| case V4L2_BUF_TYPE_VBI_CAPTURE: |
| if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap)) |
| break; |
| return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap)) |
| break; |
| return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (unlikely(!is_tx || !is_vid || !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: |
| if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane)) |
| break; |
| return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay)) |
| break; |
| return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); |
| case V4L2_BUF_TYPE_VBI_OUTPUT: |
| if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out)) |
| break; |
| return ops->vidioc_g_fmt_vbi_out(file, fh, arg); |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out)) |
| break; |
| return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); |
| case V4L2_BUF_TYPE_SDR_CAPTURE: |
| if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap)) |
| break; |
| return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_SDR_OUTPUT: |
| if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out)) |
| break; |
| return ops->vidioc_g_fmt_sdr_out(file, fh, arg); |
| } |
| return -EINVAL; |
| } |
| |
| 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_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); |
| bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; |
| bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; |
| bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; |
| bool is_rx = vfd->vfl_dir != VFL_DIR_TX; |
| bool is_tx = vfd->vfl_dir != VFL_DIR_RX; |
| int 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(!is_rx || (!is_vid && !is_tch) || !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 (is_tch) |
| v4l_pix_format_touch(&p->fmt.pix); |
| return ret; |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: |
| if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); |
| return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (unlikely(!is_rx || !is_vid || !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(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.vbi); |
| return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sliced); |
| return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (unlikely(!is_tx || !is_vid || !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(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); |
| return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| if (unlikely(!is_tx || !is_vid || !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(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.vbi); |
| return ops->vidioc_s_fmt_vbi_out(file, fh, arg); |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sliced); |
| return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); |
| case V4L2_BUF_TYPE_SDR_CAPTURE: |
| if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sdr); |
| return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_SDR_OUTPUT: |
| if (unlikely(!is_tx || !is_sdr || !ops->vidioc_s_fmt_sdr_out)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sdr); |
| return ops->vidioc_s_fmt_sdr_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); |
| bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; |
| bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; |
| bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; |
| bool is_rx = vfd->vfl_dir != VFL_DIR_TX; |
| bool is_tx = vfd->vfl_dir != VFL_DIR_RX; |
| int ret; |
| |
| v4l_sanitize_format(p); |
| |
| switch (p->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| if (unlikely(!is_rx || (!is_vid && !is_tch) || !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; |
| return ret; |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: |
| if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); |
| return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (unlikely(!is_rx || !is_vid || !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(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.vbi); |
| return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sliced); |
| return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (unlikely(!is_tx || !is_vid || !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(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); |
| return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| if (unlikely(!is_tx || !is_vid || !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(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.vbi); |
| return ops->vidioc_try_fmt_vbi_out(file, fh, arg); |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sliced); |
| return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); |
| case V4L2_BUF_TYPE_SDR_CAPTURE: |
| if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sdr); |
| return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); |
| case V4L2_BUF_TYPE_SDR_OUTPUT: |
| if (unlikely(!is_tx || !is_sdr || !ops->vidioc_try_fmt_sdr_out)) |
| break; |
| CLEAR_AFTER_FIELD(p, fmt.sdr); |
| return ops->vidioc_try_fmt_sdr_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; |
| v4l2_std_id id = vfd->tvnorms, curr_id = 0; |
| unsigned int index = p->index, i, j = 0; |
| const char *descr = ""; |
| |
| /* Return -ENODATA if the tvnorms 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(p, curr_id, descr); |
| return 0; |
| } |
| |
| 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, memory); |
| |
| 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, format); |
| |
| 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 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; |
| 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); |
| |
| return ret ? ret : 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, 1)) { |
| 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; |
| |
| 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, 1)) |
| return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); |
| return -EINVAL; |
| } |
| |
| 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, p); |
| if (vfd->ctrl_handler) |
| return v4l2_g_ext_ctrls(vfd->ctrl_handler, p); |
| if (ops->vidioc_g_ext_ctrls == NULL) |
| return -ENOTTY; |
| return check_ext_ctrls(p, 0) ? 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, p); |
| if (vfd->ctrl_handler) |
| return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p); |
| if (ops->vidioc_s_ext_ctrls == NULL) |
| return -ENOTTY; |
| return check_ext_ctrls(p, 0) ? 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, p); |
| if (vfd->ctrl_handler) |
| return v4l2_try_ext_ctrls(vfd->ctrl_handler, p); |
| if (ops->vidioc_try_ext_ctrls == NULL) |
| return -ENOTTY; |
| return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : |
| -EINVAL; |
| } |
| |
| static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, |
| struct file *file, void *fh, void *arg) |
| { |
| struct v4l2_crop *p = arg; |
| struct v4l2_selection s = { |
| .type = p->type, |
| }; |
| int ret; |
| |
| if (ops->vidioc_g_crop) |
| return ops->vidioc_g_crop(file, fh, p); |
| /* 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_ACTIVE; |
| else |
| s.target = V4L2_SEL_TGT_CROP_ACTIVE; |
| |
| ret = ops->vidioc_g_selection(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 v4l2_crop *p = arg; |
| struct v4l2_selection s = { |
| .type = p->type, |
| .r = p->c, |
| }; |
| |
| if (ops->vidioc_s_crop) |
| return ops->vidioc_s_crop(file, fh, p); |
| /* 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_ACTIVE; |
| else |
| s.target = V4L2_SEL_TGT_CROP_ACTIVE; |
| |
| return ops->vidioc_s_selection(file, fh, &s); |
| } |
| |
| static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, |
| struct file *file, void *fh, void *arg) |
| { |
| 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; |
| |
| /* |
| * The determine_valid_ioctls() call already should ensure |
| * that this can never happen, but just in case... |
| */ |
| if (WARN_ON(!ops->vidioc_cropcap && !ops->vidioc_g_selection)) |
| return -ENOTTY; |
| |
| if (ops->vidioc_cropcap) |
| ret = ops->vidioc_cropcap(file, fh, p); |
| |
| if (!ops->vidioc_g_selection) |
| return ret; |
| |
| /* |
| * 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; |
| |
| ret = ops->vidioc_g_selection(file, fh, &s); |
| if (ret) |
| return ret; |
| p->bounds = s.r; |
| |
| /* obtaining defrect */ |
| if (V4L2_TYPE_IS_OUTPUT(p->type)) |
| s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; |
| else |
| s.target = V4L2_SEL_TGT_CROP_DEFAULT; |
| |
| ret = ops->vidioc_g_selection(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; |
| strlcpy(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; |
| strlcpy(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; |
| union { |
| u32 offset; |
| int (*func)(const struct v4l2_ioctl_ops *ops, |
| struct file *file, void *fh, void *p); |
| } u; |
| 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) |
| /* This is a standard ioctl, no need for special code */ |
| #define INFO_FL_STD (1 << 2) |
| /* This is ioctl has its own function */ |
| #define INFO_FL_FUNC (1 << 3) |
| /* Queuing ioctl */ |
| #define INFO_FL_QUEUE (1 << 4) |
| /* Zero struct from after the field to the end */ |
| #define INFO_FL_CLEAR(v4l2_struct, field) \ |
| ((offsetof(struct v4l2_struct, field) + \ |
| sizeof(((struct v4l2_struct *)0)->field)) << 16) |
| #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) |
| |
| #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \ |
| [_IOC_NR(_ioctl)] = { \ |
| .ioctl = _ioctl, \ |
| .flags = _flags | INFO_FL_STD, \ |
| .name = #_ioctl, \ |
| .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \ |
| .debug = _debug, \ |
| } |
| |
| #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \ |
| [_IOC_NR(_ioctl)] = { \ |
| .ioctl = _ioctl, \ |
| .flags = _flags | INFO_FL_FUNC, \ |
| .name = #_ioctl, \ |
| .u.func = _func, \ |
| .debug = _debug, \ |
| } |
| |
| static struct v4l2_ioctl_info v4l2_ioctls[] = { |
| IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), |
| IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)), |
| IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), |
| IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), |
| IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), |
| IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0), |
| IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), |
| IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), |
| IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), |
| IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), |
| IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), |
| IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), |
| IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), |
| IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0), |
| IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), |
| IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), |
| IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), |
| IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), |
| IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), |
| IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), |
| IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0), |
| IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), |
| IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), |
| IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0), |
| IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), |
| IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0), |
| IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO), |
| IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0), |
| IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), |
| IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0), |
| IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), |
| IOCTL_INFO_FNC(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), |
| IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), |
| IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), |
| IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), |
| IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), |
| IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), |
| IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0), |
| IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), |
| IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), |
| IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), |
| IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), |
| IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), |
| IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), |
| IOCTL_INFO_FNC(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_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), |
| IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), |
| IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), |
| IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), |
| IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), |
| IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), |
| IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0), |
| IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), |
| IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), |
| IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), |
| IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0), |
| IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), |
| IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), |
| IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), |
| IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)), |
| IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0), |
| IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), |
| IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), |
| IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), |
| IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), |
| IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), |
| IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), |
| IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0), |
| IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)), |
| IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), |
| IOCTL_INFO_FNC(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_FNC(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) |
| |
| bool v4l2_is_known_ioctl(unsigned int cmd) |
| { |
| if (_IOC_NR(cmd) >= V4L2_IOCTLS) |
| return false; |
| return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; |
| } |
| |
| struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd) |
| { |
| if (_IOC_NR(cmd) >= V4L2_IOCTLS) |
| return vdev->lock; |
| if (test_bit(_IOC_NR(cmd), vdev->disable_locking)) |
| return NULL; |
| 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); |
| 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; |
| |
| 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->flags & INFO_FL_STD) { |
| typedef int (*vidioc_op)(struct file *file, void *fh, void *p); |
| const void *p = vfd->ioctl_ops; |
| const vidioc_op *vidioc = p + info->u.offset; |
| |
| ret = (*vidioc)(file, fh, arg); |
| } else if (info->flags & INFO_FL_FUNC) { |
| ret = info->u.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)) |
| return ret; |
| |
| 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); |
| } |
| } |
| |
| 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; |
| } |
| } |
| |
| return ret; |
| } |
| |
| long |
| video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, |
| v4l2_kioctl func) |
| { |
| char sbuf[128]; |
| void *mbuf = NULL; |
| void *parg = (void *)arg; |
| long err = -EINVAL; |
| bool has_array_args; |
| size_t array_size = 0; |
| void __user *user_ptr = NULL; |
| void **kernel_ptr = NULL; |
| |
| /* Copy arguments into temp kernel buffer */ |
| if (_IOC_DIR(cmd) != _IOC_NONE) { |
| if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { |
| parg = sbuf; |
| } else { |
| /* too big to allocate from stack */ |
| mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); |
| if (NULL == mbuf) |
| return -ENOMEM; |
| parg = mbuf; |
| } |
| |
| err = -EFAULT; |
| if (_IOC_DIR(cmd) & _IOC_WRITE) { |
| unsigned int n = _IOC_SIZE(cmd); |
| |
| /* |
| * 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(cmd)) { |
| u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; |
| if (flags & INFO_FL_CLEAR_MASK) |
| n = (flags & INFO_FL_CLEAR_MASK) >> 16; |
| } |
| |
| if (copy_from_user(parg, (void __user *)arg, n)) |
| goto out; |
| |
| /* zero out anything we don't copy from userspace */ |
| if (n < _IOC_SIZE(cmd)) |
| memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); |
| } else { |
| /* read-only ioctl */ |
| memset(parg, 0, _IOC_SIZE(cmd)); |
| } |
| } |
| |
| 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) { |
| /* |
| * When adding new types of array args, make sure that the |
| * parent argument to ioctl (which contains the pointer to the |
| * array) fits into sbuf (so that mbuf will still remain |
| * unused up to here). |
| */ |
| mbuf = kmalloc(array_size, GFP_KERNEL); |
| err = -ENOMEM; |
| if (NULL == mbuf) |
| goto out_array_args; |
| err = -EFAULT; |
| if (copy_from_user(mbuf, user_ptr, array_size)) |
| goto out_array_args; |
| *kernel_ptr = mbuf; |
| } |
| |
| /* Handles IOCTL */ |
| err = func(file, cmd, parg); |
| if (err == -ENOIOCTLCMD) |
| err = -ENOTTY; |
| 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); |
| } |
| |
| if (has_array_args) { |
| *kernel_ptr = (void __force *)user_ptr; |
| if (copy_to_user(user_ptr, mbuf, array_size)) |
| err = -EFAULT; |
| goto out_array_args; |
| } |
| /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid |
| results that must be returned. */ |
| if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS) |
| goto out; |
| |
| out_array_args: |
| /* Copy results into user buffer */ |
| switch (_IOC_DIR(cmd)) { |
| case _IOC_READ: |
| case (_IOC_WRITE | _IOC_READ): |
| if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) |
| err = -EFAULT; |
| break; |
| } |
| |
| out: |
| kfree(mbuf); |
| return err; |
| } |
| EXPORT_SYMBOL(video_usercopy); |
| |
| 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); |