diff options
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 3433 |
1 files changed, 3433 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c new file mode 100644 index 000000000..6876ec25b --- /dev/null +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -0,0 +1,3433 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Video capture interface for Linux version 2 + * + * A generic framework to process V4L2 ioctl commands. + * + * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) + * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) + */ + +#include <linux/compat.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/version.h> + +#include <linux/videodev2.h> + +#include <media/media-device.h> /* for media_set_bus_info() */ +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> +#include <media/v4l2-device.h> +#include <media/videobuf2-v4l2.h> +#include <media/v4l2-mc.h> +#include <media/v4l2-mem2mem.h> + +#include <trace/events/v4l2.h> + +/* Zero out the end of the struct pointed to by p. Everything after, but + * not including, the specified field is cleared. */ +#define CLEAR_AFTER_FIELD(p, field) \ + memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ + 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) + +#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) + +struct std_descr { + v4l2_std_id std; + const char *descr; +}; + +static const struct std_descr standards[] = { + { V4L2_STD_NTSC, "NTSC" }, + { V4L2_STD_NTSC_M, "NTSC-M" }, + { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, + { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, + { V4L2_STD_NTSC_443, "NTSC-443" }, + { V4L2_STD_PAL, "PAL" }, + { V4L2_STD_PAL_BG, "PAL-BG" }, + { V4L2_STD_PAL_B, "PAL-B" }, + { V4L2_STD_PAL_B1, "PAL-B1" }, + { V4L2_STD_PAL_G, "PAL-G" }, + { V4L2_STD_PAL_H, "PAL-H" }, + { V4L2_STD_PAL_I, "PAL-I" }, + { V4L2_STD_PAL_DK, "PAL-DK" }, + { V4L2_STD_PAL_D, "PAL-D" }, + { V4L2_STD_PAL_D1, "PAL-D1" }, + { V4L2_STD_PAL_K, "PAL-K" }, + { V4L2_STD_PAL_M, "PAL-M" }, + { V4L2_STD_PAL_N, "PAL-N" }, + { V4L2_STD_PAL_Nc, "PAL-Nc" }, + { V4L2_STD_PAL_60, "PAL-60" }, + { V4L2_STD_SECAM, "SECAM" }, + { V4L2_STD_SECAM_B, "SECAM-B" }, + { V4L2_STD_SECAM_G, "SECAM-G" }, + { V4L2_STD_SECAM_H, "SECAM-H" }, + { V4L2_STD_SECAM_DK, "SECAM-DK" }, + { V4L2_STD_SECAM_D, "SECAM-D" }, + { V4L2_STD_SECAM_K, "SECAM-K" }, + { V4L2_STD_SECAM_K1, "SECAM-K1" }, + { V4L2_STD_SECAM_L, "SECAM-L" }, + { V4L2_STD_SECAM_LC, "SECAM-Lc" }, + { 0, "Unknown" } +}; + +/* video4linux standard ID conversion to standard name + */ +const char *v4l2_norm_to_name(v4l2_std_id id) +{ + u32 myid = id; + int i; + + /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle + 64 bit comparisons. So, on that architecture, with some gcc + variants, compilation fails. Currently, the max value is 30bit wide. + */ + BUG_ON(myid != id); + + for (i = 0; standards[i].std; i++) + if (myid == standards[i].std) + break; + return standards[i].descr; +} +EXPORT_SYMBOL(v4l2_norm_to_name); + +/* Returns frame period for the given standard */ +void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) +{ + if (id & V4L2_STD_525_60) { + frameperiod->numerator = 1001; + frameperiod->denominator = 30000; + } else { + frameperiod->numerator = 1; + frameperiod->denominator = 25; + } +} +EXPORT_SYMBOL(v4l2_video_std_frame_period); + +/* Fill in the fields of a v4l2_standard structure according to the + 'id' and 'transmission' parameters. Returns negative on error. */ +int v4l2_video_std_construct(struct v4l2_standard *vs, + int id, const char *name) +{ + vs->id = id; + v4l2_video_std_frame_period(id, &vs->frameperiod); + vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; + strscpy(vs->name, name, sizeof(vs->name)); + return 0; +} +EXPORT_SYMBOL(v4l2_video_std_construct); + +/* Fill in the fields of a v4l2_standard structure according to the + * 'id' and 'vs->index' parameters. Returns negative on error. */ +int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) +{ + v4l2_std_id curr_id = 0; + unsigned int index = vs->index, i, j = 0; + const char *descr = ""; + + /* Return -ENODATA if the id for the current input + or output is 0, meaning that it doesn't support this API. */ + if (id == 0) + return -ENODATA; + + /* Return norm array in a canonical way */ + for (i = 0; i <= index && id; i++) { + /* last std value in the standards array is 0, so this + while always ends there since (id & 0) == 0. */ + while ((id & standards[j].std) != standards[j].std) + j++; + curr_id = standards[j].std; + descr = standards[j].descr; + j++; + if (curr_id == 0) + break; + if (curr_id != V4L2_STD_PAL && + curr_id != V4L2_STD_SECAM && + curr_id != V4L2_STD_NTSC) + id &= ~curr_id; + } + if (i <= index) + return -EINVAL; + + v4l2_video_std_construct(vs, curr_id, descr); + return 0; +} + +/* ----------------------------------------------------------------- */ +/* some arrays for pretty-printing debug messages of enum types */ + +const char *v4l2_field_names[] = { + [V4L2_FIELD_ANY] = "any", + [V4L2_FIELD_NONE] = "none", + [V4L2_FIELD_TOP] = "top", + [V4L2_FIELD_BOTTOM] = "bottom", + [V4L2_FIELD_INTERLACED] = "interlaced", + [V4L2_FIELD_SEQ_TB] = "seq-tb", + [V4L2_FIELD_SEQ_BT] = "seq-bt", + [V4L2_FIELD_ALTERNATE] = "alternate", + [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", + [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", +}; +EXPORT_SYMBOL(v4l2_field_names); + +const char *v4l2_type_names[] = { + [0] = "0", + [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", + [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", + [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", + [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", + [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", + [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", + [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", + [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", + [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", + [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", + [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", + [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", + [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", + [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", +}; +EXPORT_SYMBOL(v4l2_type_names); + +static const char *v4l2_memory_names[] = { + [V4L2_MEMORY_MMAP] = "mmap", + [V4L2_MEMORY_USERPTR] = "userptr", + [V4L2_MEMORY_OVERLAY] = "overlay", + [V4L2_MEMORY_DMABUF] = "dmabuf", +}; + +#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") + +/* ------------------------------------------------------------------ */ +/* debug help functions */ + +static void v4l_print_querycap(const void *arg, bool write_only) +{ + const struct v4l2_capability *p = arg; + + pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", + (int)sizeof(p->driver), p->driver, + (int)sizeof(p->card), p->card, + (int)sizeof(p->bus_info), p->bus_info, + p->version, p->capabilities, p->device_caps); +} + +static void v4l_print_enuminput(const void *arg, bool write_only) +{ + const struct v4l2_input *p = arg; + + pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", + p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, + p->tuner, (unsigned long long)p->std, p->status, + p->capabilities); +} + +static void v4l_print_enumoutput(const void *arg, bool write_only) +{ + const struct v4l2_output *p = arg; + + pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", + p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, + p->modulator, (unsigned long long)p->std, p->capabilities); +} + +static void v4l_print_audio(const void *arg, bool write_only) +{ + const struct v4l2_audio *p = arg; + + if (write_only) + pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); + else + pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", + p->index, (int)sizeof(p->name), p->name, + p->capability, p->mode); +} + +static void v4l_print_audioout(const void *arg, bool write_only) +{ + const struct v4l2_audioout *p = arg; + + if (write_only) + pr_cont("index=%u\n", p->index); + else + pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", + p->index, (int)sizeof(p->name), p->name, + p->capability, p->mode); +} + +static void v4l_print_fmtdesc(const void *arg, bool write_only) +{ + const struct v4l2_fmtdesc *p = arg; + + pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n", + p->index, prt_names(p->type, v4l2_type_names), + p->flags, &p->pixelformat, p->mbus_code, + (int)sizeof(p->description), p->description); +} + +static void v4l_print_format(const void *arg, bool write_only) +{ + const struct v4l2_format *p = arg; + const struct v4l2_pix_format *pix; + const struct v4l2_pix_format_mplane *mp; + const struct v4l2_vbi_format *vbi; + const struct v4l2_sliced_vbi_format *sliced; + const struct v4l2_window *win; + const struct v4l2_meta_format *meta; + u32 pixelformat; + u32 planes; + unsigned i; + + pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); + switch (p->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + pix = &p->fmt.pix; + pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", + pix->width, pix->height, &pix->pixelformat, + prt_names(pix->field, v4l2_field_names), + pix->bytesperline, pix->sizeimage, + pix->colorspace, pix->flags, pix->ycbcr_enc, + pix->quantization, pix->xfer_func); + break; + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + mp = &p->fmt.pix_mp; + pixelformat = mp->pixelformat; + pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", + mp->width, mp->height, &pixelformat, + prt_names(mp->field, v4l2_field_names), + mp->colorspace, mp->num_planes, mp->flags, + mp->ycbcr_enc, mp->quantization, mp->xfer_func); + planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); + for (i = 0; i < planes; i++) + printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, + mp->plane_fmt[i].bytesperline, + mp->plane_fmt[i].sizeimage); + break; + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: + win = &p->fmt.win; + /* Note: we can't print the clip list here since the clips + * pointer is a userspace pointer, not a kernelspace + * pointer. */ + pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", + win->w.width, win->w.height, win->w.left, win->w.top, + prt_names(win->field, v4l2_field_names), + win->chromakey, win->clipcount, win->clips, + win->bitmap, win->global_alpha); + break; + case V4L2_BUF_TYPE_VBI_CAPTURE: + case V4L2_BUF_TYPE_VBI_OUTPUT: + vbi = &p->fmt.vbi; + pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", + vbi->sampling_rate, vbi->offset, + vbi->samples_per_line, &vbi->sample_format, + vbi->start[0], vbi->start[1], + vbi->count[0], vbi->count[1]); + break; + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: + sliced = &p->fmt.sliced; + pr_cont(", service_set=0x%08x, io_size=%d\n", + sliced->service_set, sliced->io_size); + for (i = 0; i < 24; i++) + printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, + sliced->service_lines[0][i], + sliced->service_lines[1][i]); + break; + case V4L2_BUF_TYPE_SDR_CAPTURE: + case V4L2_BUF_TYPE_SDR_OUTPUT: + pixelformat = p->fmt.sdr.pixelformat; + pr_cont(", pixelformat=%p4cc\n", &pixelformat); + break; + case V4L2_BUF_TYPE_META_CAPTURE: + case V4L2_BUF_TYPE_META_OUTPUT: + meta = &p->fmt.meta; + pixelformat = meta->dataformat; + pr_cont(", dataformat=%p4cc, buffersize=%u\n", + &pixelformat, meta->buffersize); + break; + } +} + +static void v4l_print_framebuffer(const void *arg, bool write_only) +{ + const struct v4l2_framebuffer *p = arg; + + pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", + p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, + &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, + p->fmt.colorspace); +} + +static void v4l_print_buftype(const void *arg, bool write_only) +{ + pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); +} + +static void v4l_print_modulator(const void *arg, bool write_only) +{ + const struct v4l2_modulator *p = arg; + + if (write_only) + pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); + else + pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", + p->index, (int)sizeof(p->name), p->name, p->capability, + p->rangelow, p->rangehigh, p->txsubchans); +} + +static void v4l_print_tuner(const void *arg, bool write_only) +{ + const struct v4l2_tuner *p = arg; + + if (write_only) + pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); + else + pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n", + p->index, (int)sizeof(p->name), p->name, p->type, + p->capability, p->rangelow, + p->rangehigh, p->signal, p->afc, + p->rxsubchans, p->audmode); +} + +static void v4l_print_frequency(const void *arg, bool write_only) +{ + const struct v4l2_frequency *p = arg; + + pr_cont("tuner=%u, type=%u, frequency=%u\n", + p->tuner, p->type, p->frequency); +} + +static void v4l_print_standard(const void *arg, bool write_only) +{ + const struct v4l2_standard *p = arg; + + pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", + p->index, + (unsigned long long)p->id, (int)sizeof(p->name), p->name, + p->frameperiod.numerator, + p->frameperiod.denominator, + p->framelines); +} + +static void v4l_print_std(const void *arg, bool write_only) +{ + pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); +} + +static void v4l_print_hw_freq_seek(const void *arg, bool write_only) +{ + const struct v4l2_hw_freq_seek *p = arg; + + pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", + p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, + p->rangelow, p->rangehigh); +} + +static void v4l_print_requestbuffers(const void *arg, bool write_only) +{ + const struct v4l2_requestbuffers *p = arg; + + pr_cont("count=%d, type=%s, memory=%s\n", + p->count, + prt_names(p->type, v4l2_type_names), + prt_names(p->memory, v4l2_memory_names)); +} + +static void v4l_print_buffer(const void *arg, bool write_only) +{ + const struct v4l2_buffer *p = arg; + const struct v4l2_timecode *tc = &p->timecode; + const struct v4l2_plane *plane; + int i; + + pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", + (int)p->timestamp.tv_sec / 3600, + ((int)p->timestamp.tv_sec / 60) % 60, + ((int)p->timestamp.tv_sec % 60), + (long)p->timestamp.tv_usec, + p->index, + prt_names(p->type, v4l2_type_names), p->request_fd, + p->flags, prt_names(p->field, v4l2_field_names), + p->sequence, prt_names(p->memory, v4l2_memory_names)); + + if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { + pr_cont("\n"); + for (i = 0; i < p->length; ++i) { + plane = &p->m.planes[i]; + printk(KERN_DEBUG + "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", + i, plane->bytesused, plane->data_offset, + plane->m.userptr, plane->length); + } + } else { + pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", + p->bytesused, p->m.userptr, p->length); + } + + printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", + tc->hours, tc->minutes, tc->seconds, + tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); +} + +static void v4l_print_exportbuffer(const void *arg, bool write_only) +{ + const struct v4l2_exportbuffer *p = arg; + + pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", + p->fd, prt_names(p->type, v4l2_type_names), + p->index, p->plane, p->flags); +} + +static void v4l_print_create_buffers(const void *arg, bool write_only) +{ + const struct v4l2_create_buffers *p = arg; + + pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", + p->index, p->count, prt_names(p->memory, v4l2_memory_names), + p->capabilities); + v4l_print_format(&p->format, write_only); +} + +static void v4l_print_streamparm(const void *arg, bool write_only) +{ + const struct v4l2_streamparm *p = arg; + + pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); + + if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || + p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { + const struct v4l2_captureparm *c = &p->parm.capture; + + pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", + c->capability, c->capturemode, + c->timeperframe.numerator, c->timeperframe.denominator, + c->extendedmode, c->readbuffers); + } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || + p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { + const struct v4l2_outputparm *c = &p->parm.output; + + pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", + c->capability, c->outputmode, + c->timeperframe.numerator, c->timeperframe.denominator, + c->extendedmode, c->writebuffers); + } else { + pr_cont("\n"); + } +} + +static void v4l_print_queryctrl(const void *arg, bool write_only) +{ + const struct v4l2_queryctrl *p = arg; + + pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", + p->id, p->type, (int)sizeof(p->name), p->name, + p->minimum, p->maximum, + p->step, p->default_value, p->flags); +} + +static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) +{ + const struct v4l2_query_ext_ctrl *p = arg; + + pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n", + p->id, p->type, (int)sizeof(p->name), p->name, + p->minimum, p->maximum, + p->step, p->default_value, p->flags, + p->elem_size, p->elems, p->nr_of_dims, + p->dims[0], p->dims[1], p->dims[2], p->dims[3]); +} + +static void v4l_print_querymenu(const void *arg, bool write_only) +{ + const struct v4l2_querymenu *p = arg; + + pr_cont("id=0x%x, index=%d\n", p->id, p->index); +} + +static void v4l_print_control(const void *arg, bool write_only) +{ + const struct v4l2_control *p = arg; + const char *name = v4l2_ctrl_get_name(p->id); + + if (name) + pr_cont("name=%s, ", name); + pr_cont("id=0x%x, value=%d\n", p->id, p->value); +} + +static void v4l_print_ext_controls(const void *arg, bool write_only) +{ + const struct v4l2_ext_controls *p = arg; + int i; + + pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", + p->which, p->count, p->error_idx, p->request_fd); + for (i = 0; i < p->count; i++) { + unsigned int id = p->controls[i].id; + const char *name = v4l2_ctrl_get_name(id); + + if (name) + pr_cont(", name=%s", name); + if (!p->controls[i].size) + pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); + else + pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); + } + pr_cont("\n"); +} + +static void v4l_print_cropcap(const void *arg, bool write_only) +{ + const struct v4l2_cropcap *p = arg; + + pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", + prt_names(p->type, v4l2_type_names), + p->bounds.width, p->bounds.height, + p->bounds.left, p->bounds.top, + p->defrect.width, p->defrect.height, + p->defrect.left, p->defrect.top, + p->pixelaspect.numerator, p->pixelaspect.denominator); +} + +static void v4l_print_crop(const void *arg, bool write_only) +{ + const struct v4l2_crop *p = arg; + + pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", + prt_names(p->type, v4l2_type_names), + p->c.width, p->c.height, + p->c.left, p->c.top); +} + +static void v4l_print_selection(const void *arg, bool write_only) +{ + const struct v4l2_selection *p = arg; + + pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", + prt_names(p->type, v4l2_type_names), + p->target, p->flags, + p->r.width, p->r.height, p->r.left, p->r.top); +} + +static void v4l_print_jpegcompression(const void *arg, bool write_only) +{ + const struct v4l2_jpegcompression *p = arg; + + pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", + p->quality, p->APPn, p->APP_len, + p->COM_len, p->jpeg_markers); +} + +static void v4l_print_enc_idx(const void *arg, bool write_only) +{ + const struct v4l2_enc_idx *p = arg; + + pr_cont("entries=%d, entries_cap=%d\n", + p->entries, p->entries_cap); +} + +static void v4l_print_encoder_cmd(const void *arg, bool write_only) +{ + const struct v4l2_encoder_cmd *p = arg; + + pr_cont("cmd=%d, flags=0x%x\n", + p->cmd, p->flags); +} + +static void v4l_print_decoder_cmd(const void *arg, bool write_only) +{ + const struct v4l2_decoder_cmd *p = arg; + + pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); + + if (p->cmd == V4L2_DEC_CMD_START) + pr_info("speed=%d, format=%u\n", + p->start.speed, p->start.format); + else if (p->cmd == V4L2_DEC_CMD_STOP) + pr_info("pts=%llu\n", p->stop.pts); +} + +static void v4l_print_dbg_chip_info(const void *arg, bool write_only) +{ + const struct v4l2_dbg_chip_info *p = arg; + + pr_cont("type=%u, ", p->match.type); + if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) + pr_cont("name=%.*s, ", + (int)sizeof(p->match.name), p->match.name); + else + pr_cont("addr=%u, ", p->match.addr); + pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); +} + +static void v4l_print_dbg_register(const void *arg, bool write_only) +{ + const struct v4l2_dbg_register *p = arg; + + pr_cont("type=%u, ", p->match.type); + if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) + pr_cont("name=%.*s, ", + (int)sizeof(p->match.name), p->match.name); + else + pr_cont("addr=%u, ", p->match.addr); + pr_cont("reg=0x%llx, val=0x%llx\n", + p->reg, p->val); +} + +static void v4l_print_dv_timings(const void *arg, bool write_only) +{ + const struct v4l2_dv_timings *p = arg; + + switch (p->type) { + case V4L2_DV_BT_656_1120: + pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n", + p->bt.interlaced, p->bt.pixelclock, + p->bt.width, p->bt.height, + p->bt.polarities, p->bt.hfrontporch, + p->bt.hsync, p->bt.hbackporch, + p->bt.vfrontporch, p->bt.vsync, + p->bt.vbackporch, p->bt.il_vfrontporch, + p->bt.il_vsync, p->bt.il_vbackporch, + p->bt.standards, p->bt.flags); + break; + default: + pr_cont("type=%d\n", p->type); + break; + } +} + +static void v4l_print_enum_dv_timings(const void *arg, bool write_only) +{ + const struct v4l2_enum_dv_timings *p = arg; + + pr_cont("index=%u, ", p->index); + v4l_print_dv_timings(&p->timings, write_only); +} + +static void v4l_print_dv_timings_cap(const void *arg, bool write_only) +{ + const struct v4l2_dv_timings_cap *p = arg; + + switch (p->type) { + case V4L2_DV_BT_656_1120: + pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", + p->bt.min_width, p->bt.max_width, + p->bt.min_height, p->bt.max_height, + p->bt.min_pixelclock, p->bt.max_pixelclock, + p->bt.standards, p->bt.capabilities); + break; + default: + pr_cont("type=%u\n", p->type); + break; + } +} + +static void v4l_print_frmsizeenum(const void *arg, bool write_only) +{ + const struct v4l2_frmsizeenum *p = arg; + + pr_cont("index=%u, pixelformat=%p4cc, type=%u", + p->index, &p->pixel_format, p->type); + switch (p->type) { + case V4L2_FRMSIZE_TYPE_DISCRETE: + pr_cont(", wxh=%ux%u\n", + p->discrete.width, p->discrete.height); + break; + case V4L2_FRMSIZE_TYPE_STEPWISE: + pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", + p->stepwise.min_width, + p->stepwise.min_height, + p->stepwise.max_width, + p->stepwise.max_height, + p->stepwise.step_width, + p->stepwise.step_height); + break; + case V4L2_FRMSIZE_TYPE_CONTINUOUS: + default: + pr_cont("\n"); + break; + } +} + +static void v4l_print_frmivalenum(const void *arg, bool write_only) +{ + const struct v4l2_frmivalenum *p = arg; + + pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", + p->index, &p->pixel_format, p->width, p->height, p->type); + switch (p->type) { + case V4L2_FRMIVAL_TYPE_DISCRETE: + pr_cont(", fps=%d/%d\n", + p->discrete.numerator, + p->discrete.denominator); + break; + case V4L2_FRMIVAL_TYPE_STEPWISE: + pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", + p->stepwise.min.numerator, + p->stepwise.min.denominator, + p->stepwise.max.numerator, + p->stepwise.max.denominator, + p->stepwise.step.numerator, + p->stepwise.step.denominator); + break; + case V4L2_FRMIVAL_TYPE_CONTINUOUS: + default: + pr_cont("\n"); + break; + } +} + +static void v4l_print_event(const void *arg, bool write_only) +{ + const struct v4l2_event *p = arg; + const struct v4l2_event_ctrl *c; + + pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", + p->type, p->pending, p->sequence, p->id, + p->timestamp.tv_sec, p->timestamp.tv_nsec); + switch (p->type) { + case V4L2_EVENT_VSYNC: + printk(KERN_DEBUG "field=%s\n", + prt_names(p->u.vsync.field, v4l2_field_names)); + break; + case V4L2_EVENT_CTRL: + c = &p->u.ctrl; + printk(KERN_DEBUG "changes=0x%x, type=%u, ", + c->changes, c->type); + if (c->type == V4L2_CTRL_TYPE_INTEGER64) + pr_cont("value64=%lld, ", c->value64); + else + pr_cont("value=%d, ", c->value); + pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", + c->flags, c->minimum, c->maximum, + c->step, c->default_value); + break; + case V4L2_EVENT_FRAME_SYNC: + pr_cont("frame_sequence=%u\n", + p->u.frame_sync.frame_sequence); + break; + } +} + +static void v4l_print_event_subscription(const void *arg, bool write_only) +{ + const struct v4l2_event_subscription *p = arg; + + pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", + p->type, p->id, p->flags); +} + +static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) +{ + const struct v4l2_sliced_vbi_cap *p = arg; + int i; + + pr_cont("type=%s, service_set=0x%08x\n", + prt_names(p->type, v4l2_type_names), p->service_set); + for (i = 0; i < 24; i++) + printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, + p->service_lines[0][i], + p->service_lines[1][i]); +} + +static void v4l_print_freq_band(const void *arg, bool write_only) +{ + const struct v4l2_frequency_band *p = arg; + + pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", + p->tuner, p->type, p->index, + p->capability, p->rangelow, + p->rangehigh, p->modulation); +} + +static void v4l_print_edid(const void *arg, bool write_only) +{ + const struct v4l2_edid *p = arg; + + pr_cont("pad=%u, start_block=%u, blocks=%u\n", + p->pad, p->start_block, p->blocks); +} + +static void v4l_print_u32(const void *arg, bool write_only) +{ + pr_cont("value=%u\n", *(const u32 *)arg); +} + +static void v4l_print_newline(const void *arg, bool write_only) +{ + pr_cont("\n"); +} + +static void v4l_print_default(const void *arg, bool write_only) +{ + pr_cont("driver-specific ioctl\n"); +} + +static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) +{ + __u32 i; + + /* zero the reserved fields */ + c->reserved[0] = 0; + for (i = 0; i < c->count; i++) + c->controls[i].reserved2[0] = 0; + + switch (c->which) { + case V4L2_CID_PRIVATE_BASE: + /* + * V4L2_CID_PRIVATE_BASE cannot be used as control class + * when using extended controls. + * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL + * is it allowed for backwards compatibility. + */ + if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) + return false; + break; + case V4L2_CTRL_WHICH_DEF_VAL: + /* Default value cannot be changed */ + if (ioctl == VIDIOC_S_EXT_CTRLS || + ioctl == VIDIOC_TRY_EXT_CTRLS) { + c->error_idx = c->count; + return false; + } + return true; + case V4L2_CTRL_WHICH_CUR_VAL: + return true; + case V4L2_CTRL_WHICH_REQUEST_VAL: + c->error_idx = c->count; + return false; + } + + /* Check that all controls are from the same control class. */ + for (i = 0; i < c->count; i++) { + if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { + c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : + c->count; + return false; + } + } + return true; +} + +static int check_fmt(struct file *file, enum v4l2_buf_type type) +{ + const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | + V4L2_CAP_VIDEO_CAPTURE_MPLANE | + V4L2_CAP_VIDEO_OUTPUT | + V4L2_CAP_VIDEO_OUTPUT_MPLANE | + V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; + const u32 meta_caps = V4L2_CAP_META_CAPTURE | + V4L2_CAP_META_OUTPUT; + struct video_device *vfd = video_devdata(file); + const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; + bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && + (vfd->device_caps & vid_caps); + bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; + bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; + bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; + bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && + (vfd->device_caps & meta_caps); + bool is_rx = vfd->vfl_dir != VFL_DIR_TX; + bool is_tx = vfd->vfl_dir != VFL_DIR_RX; + + if (ops == NULL) + return -EINVAL; + + switch (type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + if ((is_vid || is_tch) && is_rx && + (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) + return 0; + break; + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) + return 0; + break; + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) + return 0; + break; + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + if (is_vid && is_tx && + (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) + return 0; + break; + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) + return 0; + break; + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: + if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) + return 0; + break; + case V4L2_BUF_TYPE_VBI_CAPTURE: + if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) + return 0; + break; + case V4L2_BUF_TYPE_VBI_OUTPUT: + if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) + return 0; + break; + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: + if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) + return 0; + break; + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: + if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) + return 0; + break; + case V4L2_BUF_TYPE_SDR_CAPTURE: + if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) + return 0; + break; + case V4L2_BUF_TYPE_SDR_OUTPUT: + if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) + return 0; + break; + case V4L2_BUF_TYPE_META_CAPTURE: + if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) + return 0; + break; + case V4L2_BUF_TYPE_META_OUTPUT: + if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) + return 0; + break; + default: + break; + } + return -EINVAL; +} + +static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace, + u32 *encoding, u32 *quantization, + u32 *xfer_func) +{ + bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 || + pixelformat == V4L2_PIX_FMT_HSV32; + + if (!v4l2_is_colorspace_valid(*colorspace)) { + *colorspace = V4L2_COLORSPACE_DEFAULT; + *encoding = V4L2_YCBCR_ENC_DEFAULT; + *quantization = V4L2_QUANTIZATION_DEFAULT; + *xfer_func = V4L2_XFER_FUNC_DEFAULT; + } + + if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) || + (is_hsv && !v4l2_is_hsv_enc_valid(*encoding))) + *encoding = V4L2_YCBCR_ENC_DEFAULT; + + if (!v4l2_is_quant_valid(*quantization)) + *quantization = V4L2_QUANTIZATION_DEFAULT; + + if (!v4l2_is_xfer_func_valid(*xfer_func)) + *xfer_func = V4L2_XFER_FUNC_DEFAULT; +} + +static void v4l_sanitize_format(struct v4l2_format *fmt) +{ + unsigned int offset; + + /* Make sure num_planes is not bogus */ + if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || + fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, + VIDEO_MAX_PLANES); + + /* + * The v4l2_pix_format structure has been extended with fields that were + * not previously required to be set to zero by applications. The priv + * field, when set to a magic value, indicates that the extended fields + * are valid. Otherwise they will contain undefined values. To simplify + * the API towards drivers zero the extended fields and set the priv + * field to the magic value when the extended pixel format structure + * isn't used by applications. + */ + if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || + fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { + if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) { + fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + + offset = offsetof(struct v4l2_pix_format, priv) + + sizeof(fmt->fmt.pix.priv); + memset(((void *)&fmt->fmt.pix) + offset, 0, + sizeof(fmt->fmt.pix) - offset); + } + } + + /* Replace invalid colorspace values with defaults. */ + if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || + fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { + v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat, + &fmt->fmt.pix.colorspace, + &fmt->fmt.pix.ycbcr_enc, + &fmt->fmt.pix.quantization, + &fmt->fmt.pix.xfer_func); + } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || + fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { + u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc; + u32 quantization = fmt->fmt.pix_mp.quantization; + u32 xfer_func = fmt->fmt.pix_mp.xfer_func; + + v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat, + &fmt->fmt.pix_mp.colorspace, &ycbcr_enc, + &quantization, &xfer_func); + + fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc; + fmt->fmt.pix_mp.quantization = quantization; + fmt->fmt.pix_mp.xfer_func = xfer_func; + } +} + +static int v4l_querycap(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_capability *cap = (struct v4l2_capability *)arg; + struct video_device *vfd = video_devdata(file); + int ret; + + cap->version = LINUX_VERSION_CODE; + cap->device_caps = vfd->device_caps; + cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; + + media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), + vfd->dev_parent); + + ret = ops->vidioc_querycap(file, fh, cap); + + /* + * Drivers must not change device_caps, so check for this and + * warn if this happened. + */ + WARN_ON(cap->device_caps != vfd->device_caps); + /* + * Check that capabilities is a superset of + * vfd->device_caps | V4L2_CAP_DEVICE_CAPS + */ + WARN_ON((cap->capabilities & + (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != + (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); + cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; + cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; + + return ret; +} + +static int v4l_g_input(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + + if (vfd->device_caps & V4L2_CAP_IO_MC) { + *(int *)arg = 0; + return 0; + } + + return ops->vidioc_g_input(file, fh, arg); +} + +static int v4l_g_output(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + + if (vfd->device_caps & V4L2_CAP_IO_MC) { + *(int *)arg = 0; + return 0; + } + + return ops->vidioc_g_output(file, fh, arg); +} + +static int v4l_s_input(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + int ret; + + ret = v4l_enable_media_source(vfd); + if (ret) + return ret; + + if (vfd->device_caps & V4L2_CAP_IO_MC) + return *(int *)arg ? -EINVAL : 0; + + return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); +} + +static int v4l_s_output(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + + if (vfd->device_caps & V4L2_CAP_IO_MC) + return *(int *)arg ? -EINVAL : 0; + + return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); +} + +static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd; + u32 *p = arg; + + vfd = video_devdata(file); + *p = v4l2_prio_max(vfd->prio); + return 0; +} + +static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd; + struct v4l2_fh *vfh; + u32 *p = arg; + + vfd = video_devdata(file); + if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) + return -ENOTTY; + vfh = file->private_data; + return v4l2_prio_change(vfd->prio, &vfh->prio, *p); +} + +static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_input *p = arg; + + /* + * We set the flags for CAP_DV_TIMINGS & + * CAP_STD here based on ioctl handler provided by the + * driver. If the driver doesn't support these + * for a specific input, it must override these flags. + */ + if (is_valid_ioctl(vfd, VIDIOC_S_STD)) + p->capabilities |= V4L2_IN_CAP_STD; + + if (vfd->device_caps & V4L2_CAP_IO_MC) { + if (p->index) + return -EINVAL; + strscpy(p->name, vfd->name, sizeof(p->name)); + p->type = V4L2_INPUT_TYPE_CAMERA; + return 0; + } + + return ops->vidioc_enum_input(file, fh, p); +} + +static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_output *p = arg; + + /* + * We set the flags for CAP_DV_TIMINGS & + * CAP_STD here based on ioctl handler provided by the + * driver. If the driver doesn't support these + * for a specific output, it must override these flags. + */ + if (is_valid_ioctl(vfd, VIDIOC_S_STD)) + p->capabilities |= V4L2_OUT_CAP_STD; + + if (vfd->device_caps & V4L2_CAP_IO_MC) { + if (p->index) + return -EINVAL; + strscpy(p->name, vfd->name, sizeof(p->name)); + p->type = V4L2_OUTPUT_TYPE_ANALOG; + return 0; + } + + return ops->vidioc_enum_output(file, fh, p); +} + +static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) +{ + const unsigned sz = sizeof(fmt->description); + const char *descr = NULL; + u32 flags = 0; + + /* + * We depart from the normal coding style here since the descriptions + * should be aligned so it is easy to see which descriptions will be + * longer than 31 characters (the max length for a description). + * And frankly, this is easier to read anyway. + * + * Note that gcc will use O(log N) comparisons to find the right case. + */ + switch (fmt->pixelformat) { + /* Max description length mask: descr = "0123456789012345678901234567890" */ + case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; + case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; + case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; + case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; + case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; + case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; + case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; + case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; + case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; + case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; + case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; + case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; + case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; + case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; + case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; + case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; + case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; + case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; + case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; + case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; + case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; + case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; + case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; + case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; + case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; + case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; + case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; + case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; + case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; + case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; + case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; + case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; + case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; + case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; + case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; + case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; + case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; + case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; + case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; + case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; + case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; + case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; + case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; + case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; + case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; + case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; + case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; + case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; + case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; + case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; + case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; + case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; + case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; + case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; + case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; + case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; + case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; + case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; + case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; + case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; + case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; + case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; + case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; + case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; + case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; + case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; + case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; + case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; + case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; + case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; + case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; + case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; + case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; + case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; + case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; + case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; + case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; + case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; + case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; + case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; + case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break; + case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break; + case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break; + case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break; + case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break; + case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break; + case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break; + case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break; + case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break; + case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break; + case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; + case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break; + case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break; + case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break; + case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break; + case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break; + case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break; + case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; + case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; + case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; + case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; + case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; + case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; + case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; + case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; + case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; + case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; + case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; + case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; + case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; + case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; + case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; + case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; + case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; + case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; + case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; + case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; + case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; + case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; + case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; + case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; + case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; + case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; + case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; + case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; + case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; + case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; + case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; + case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; + case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; + case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; + case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; + case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; + case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; + case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; + case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; + case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; + case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; + case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; + case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; + case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; + case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; + case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; + case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; + case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; + case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; + case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; + case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; + case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; + case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; + case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; + case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; + case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; + case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; + case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; + case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; + case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; + case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; + case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; + case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; + case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; + case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; + case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; + case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; + case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; + case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; + case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; + case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; + case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; + case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; + case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; + case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; + case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; + case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; + case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; + case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; + case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; + case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; + case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; + + default: + /* Compressed formats */ + flags = V4L2_FMT_FLAG_COMPRESSED; + switch (fmt->pixelformat) { + /* Max description length mask: descr = "0123456789012345678901234567890" */ + case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; + case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; + case V4L2_PIX_FMT_DV: descr = "1394"; break; + case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; + case V4L2_PIX_FMT_H264: descr = "H.264"; break; + case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; + case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; + case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; + case V4L2_PIX_FMT_H263: descr = "H.263"; break; + case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; + case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; + case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; + case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; + case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; + case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; + case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; + case V4L2_PIX_FMT_VP8: descr = "VP8"; break; + case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; + case V4L2_PIX_FMT_VP9: descr = "VP9"; break; + case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; + case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ + case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; + case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ + case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ + case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; + case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; + case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; + case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; + case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; + case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; + case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; + case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; + case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; + case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; + case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; + case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; + case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; + case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; + case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; + case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; + case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; + case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; + case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; + case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; + case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; + default: + if (fmt->description[0]) + return; + WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); + flags = 0; + snprintf(fmt->description, sz, "%p4cc", + &fmt->pixelformat); + break; + } + } + + if (descr) + WARN_ON(strscpy(fmt->description, descr, sz) < 0); + fmt->flags |= flags; +} + +static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vdev = video_devdata(file); + struct v4l2_fmtdesc *p = arg; + int ret = check_fmt(file, p->type); + u32 mbus_code; + u32 cap_mask; + + if (ret) + return ret; + ret = -EINVAL; + + if (!(vdev->device_caps & V4L2_CAP_IO_MC)) + p->mbus_code = 0; + + mbus_code = p->mbus_code; + CLEAR_AFTER_FIELD(p, type); + p->mbus_code = mbus_code; + + switch (p->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | + V4L2_CAP_VIDEO_M2M_MPLANE; + if (!!(vdev->device_caps & cap_mask) != + (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) + break; + + if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) + break; + ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); + break; + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) + break; + ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); + break; + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | + V4L2_CAP_VIDEO_M2M_MPLANE; + if (!!(vdev->device_caps & cap_mask) != + (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) + break; + + if (unlikely(!ops->vidioc_enum_fmt_vid_out)) + break; + ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); + break; + case V4L2_BUF_TYPE_SDR_CAPTURE: + if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) + break; + ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); + break; + case V4L2_BUF_TYPE_SDR_OUTPUT: + if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) + break; + ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); + break; + case V4L2_BUF_TYPE_META_CAPTURE: + if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) + break; + ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); + break; + case V4L2_BUF_TYPE_META_OUTPUT: + if (unlikely(!ops->vidioc_enum_fmt_meta_out)) + break; + ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); + break; + } + if (ret == 0) + v4l_fill_fmtdesc(p); + return ret; +} + +static void v4l_pix_format_touch(struct v4l2_pix_format *p) +{ + /* + * The v4l2_pix_format structure contains fields that make no sense for + * touch. Set them to default values in this case. + */ + + p->field = V4L2_FIELD_NONE; + p->colorspace = V4L2_COLORSPACE_RAW; + p->flags = 0; + p->ycbcr_enc = 0; + p->quantization = 0; + p->xfer_func = 0; +} + +static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_format *p = arg; + struct video_device *vfd = video_devdata(file); + int ret = check_fmt(file, p->type); + + if (ret) + return ret; + + /* + * fmt can't be cleared for these overlay types due to the 'clips' + * 'clipcount' and 'bitmap' pointers in struct v4l2_window. + * Those are provided by the user. So handle these two overlay types + * first, and then just do a simple memset for the other types. + */ + switch (p->type) { + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { + struct v4l2_clip *clips = p->fmt.win.clips; + u32 clipcount = p->fmt.win.clipcount; + void __user *bitmap = p->fmt.win.bitmap; + + memset(&p->fmt, 0, sizeof(p->fmt)); + p->fmt.win.clips = clips; + p->fmt.win.clipcount = clipcount; + p->fmt.win.bitmap = bitmap; + break; + } + default: + memset(&p->fmt, 0, sizeof(p->fmt)); + break; + } + + switch (p->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + if (unlikely(!ops->vidioc_g_fmt_vid_cap)) + break; + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); + /* just in case the driver zeroed it again */ + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + if (vfd->vfl_type == VFL_TYPE_TOUCH) + v4l_pix_format_touch(&p->fmt.pix); + return ret; + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); + case V4L2_BUF_TYPE_VBI_CAPTURE: + return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: + return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + if (unlikely(!ops->vidioc_g_fmt_vid_out)) + break; + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); + /* just in case the driver zeroed it again */ + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + return ret; + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: + return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); + case V4L2_BUF_TYPE_VBI_OUTPUT: + return ops->vidioc_g_fmt_vbi_out(file, fh, arg); + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: + return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); + case V4L2_BUF_TYPE_SDR_CAPTURE: + return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); + case V4L2_BUF_TYPE_SDR_OUTPUT: + return ops->vidioc_g_fmt_sdr_out(file, fh, arg); + case V4L2_BUF_TYPE_META_CAPTURE: + return ops->vidioc_g_fmt_meta_cap(file, fh, arg); + case V4L2_BUF_TYPE_META_OUTPUT: + return ops->vidioc_g_fmt_meta_out(file, fh, arg); + } + return -EINVAL; +} + +static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_format *p = arg; + struct video_device *vfd = video_devdata(file); + int ret = check_fmt(file, p->type); + unsigned int i; + + if (ret) + return ret; + + ret = v4l_enable_media_source(vfd); + if (ret) + return ret; + v4l_sanitize_format(p); + + switch (p->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + if (unlikely(!ops->vidioc_s_fmt_vid_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix); + ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); + /* just in case the driver zeroed it again */ + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + if (vfd->vfl_type == VFL_TYPE_TOUCH) + v4l_pix_format_touch(&p->fmt.pix); + return ret; + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); + for (i = 0; i < p->fmt.pix_mp.num_planes; i++) + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], + bytesperline); + return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) + break; + CLEAR_AFTER_FIELD(p, fmt.win); + return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); + case V4L2_BUF_TYPE_VBI_CAPTURE: + if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.vbi.flags); + return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: + if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); + return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + if (unlikely(!ops->vidioc_s_fmt_vid_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix); + ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); + /* just in case the driver zeroed it again */ + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + return ret; + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); + for (i = 0; i < p->fmt.pix_mp.num_planes; i++) + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], + bytesperline); + return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: + if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) + break; + CLEAR_AFTER_FIELD(p, fmt.win); + return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); + case V4L2_BUF_TYPE_VBI_OUTPUT: + if (unlikely(!ops->vidioc_s_fmt_vbi_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.vbi.flags); + return ops->vidioc_s_fmt_vbi_out(file, fh, arg); + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: + if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); + return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); + case V4L2_BUF_TYPE_SDR_CAPTURE: + if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); + return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); + case V4L2_BUF_TYPE_SDR_OUTPUT: + if (unlikely(!ops->vidioc_s_fmt_sdr_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); + return ops->vidioc_s_fmt_sdr_out(file, fh, arg); + case V4L2_BUF_TYPE_META_CAPTURE: + if (unlikely(!ops->vidioc_s_fmt_meta_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_s_fmt_meta_cap(file, fh, arg); + case V4L2_BUF_TYPE_META_OUTPUT: + if (unlikely(!ops->vidioc_s_fmt_meta_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_s_fmt_meta_out(file, fh, arg); + } + return -EINVAL; +} + +static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_format *p = arg; + struct video_device *vfd = video_devdata(file); + int ret = check_fmt(file, p->type); + unsigned int i; + + if (ret) + return ret; + + v4l_sanitize_format(p); + + switch (p->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + if (unlikely(!ops->vidioc_try_fmt_vid_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix); + ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); + /* just in case the driver zeroed it again */ + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + if (vfd->vfl_type == VFL_TYPE_TOUCH) + v4l_pix_format_touch(&p->fmt.pix); + return ret; + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); + for (i = 0; i < p->fmt.pix_mp.num_planes; i++) + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], + bytesperline); + return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) + break; + CLEAR_AFTER_FIELD(p, fmt.win); + return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); + case V4L2_BUF_TYPE_VBI_CAPTURE: + if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.vbi.flags); + return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: + if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); + return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + if (unlikely(!ops->vidioc_try_fmt_vid_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix); + ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); + /* just in case the driver zeroed it again */ + p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + return ret; + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) + break; + CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); + for (i = 0; i < p->fmt.pix_mp.num_planes; i++) + CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], + bytesperline); + return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: + if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) + break; + CLEAR_AFTER_FIELD(p, fmt.win); + return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); + case V4L2_BUF_TYPE_VBI_OUTPUT: + if (unlikely(!ops->vidioc_try_fmt_vbi_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.vbi.flags); + return ops->vidioc_try_fmt_vbi_out(file, fh, arg); + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: + if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); + return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); + case V4L2_BUF_TYPE_SDR_CAPTURE: + if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); + return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); + case V4L2_BUF_TYPE_SDR_OUTPUT: + if (unlikely(!ops->vidioc_try_fmt_sdr_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); + return ops->vidioc_try_fmt_sdr_out(file, fh, arg); + case V4L2_BUF_TYPE_META_CAPTURE: + if (unlikely(!ops->vidioc_try_fmt_meta_cap)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_try_fmt_meta_cap(file, fh, arg); + case V4L2_BUF_TYPE_META_OUTPUT: + if (unlikely(!ops->vidioc_try_fmt_meta_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_try_fmt_meta_out(file, fh, arg); + } + return -EINVAL; +} + +static int v4l_streamon(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); +} + +static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); +} + +static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_tuner *p = arg; + int err; + + p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? + V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + err = ops->vidioc_g_tuner(file, fh, p); + if (!err) + p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; + return err; +} + +static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_tuner *p = arg; + int ret; + + ret = v4l_enable_media_source(vfd); + if (ret) + return ret; + p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? + V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + return ops->vidioc_s_tuner(file, fh, p); +} + +static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_modulator *p = arg; + int err; + + if (vfd->vfl_type == VFL_TYPE_RADIO) + p->type = V4L2_TUNER_RADIO; + + err = ops->vidioc_g_modulator(file, fh, p); + if (!err) + p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; + return err; +} + +static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_modulator *p = arg; + + if (vfd->vfl_type == VFL_TYPE_RADIO) + p->type = V4L2_TUNER_RADIO; + + return ops->vidioc_s_modulator(file, fh, p); +} + +static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_frequency *p = arg; + + if (vfd->vfl_type == VFL_TYPE_SDR) + p->type = V4L2_TUNER_SDR; + else + p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? + V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + return ops->vidioc_g_frequency(file, fh, p); +} + +static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + const struct v4l2_frequency *p = arg; + enum v4l2_tuner_type type; + int ret; + + ret = v4l_enable_media_source(vfd); + if (ret) + return ret; + if (vfd->vfl_type == VFL_TYPE_SDR) { + if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) + return -EINVAL; + } else { + type = (vfd->vfl_type == VFL_TYPE_RADIO) ? + V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + if (type != p->type) + return -EINVAL; + } + return ops->vidioc_s_frequency(file, fh, p); +} + +static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_standard *p = arg; + + return v4l_video_std_enumstd(p, vfd->tvnorms); +} + +static int v4l_s_std(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + v4l2_std_id id = *(v4l2_std_id *)arg, norm; + int ret; + + ret = v4l_enable_media_source(vfd); + if (ret) + return ret; + norm = id & vfd->tvnorms; + if (vfd->tvnorms && !norm) /* Check if std is supported */ + return -EINVAL; + + /* Calls the specific handler */ + return ops->vidioc_s_std(file, fh, norm); +} + +static int v4l_querystd(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + v4l2_std_id *p = arg; + int ret; + + ret = v4l_enable_media_source(vfd); + if (ret) + return ret; + /* + * If no signal is detected, then the driver should return + * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with + * any standards that do not apply removed. + * + * This means that tuners, audio and video decoders can join + * their efforts to improve the standards detection. + */ + *p = vfd->tvnorms; + return ops->vidioc_querystd(file, fh, arg); +} + +static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_hw_freq_seek *p = arg; + enum v4l2_tuner_type type; + int ret; + + ret = v4l_enable_media_source(vfd); + if (ret) + return ret; + /* s_hw_freq_seek is not supported for SDR for now */ + if (vfd->vfl_type == VFL_TYPE_SDR) + return -EINVAL; + + type = (vfd->vfl_type == VFL_TYPE_RADIO) ? + V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + if (p->type != type) + return -EINVAL; + return ops->vidioc_s_hw_freq_seek(file, fh, p); +} + +static int v4l_overlay(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); +} + +static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_requestbuffers *p = arg; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; + + CLEAR_AFTER_FIELD(p, flags); + + return ops->vidioc_reqbufs(file, fh, p); +} + +static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_buffer *p = arg; + int ret = check_fmt(file, p->type); + + return ret ? ret : ops->vidioc_querybuf(file, fh, p); +} + +static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_buffer *p = arg; + int ret = check_fmt(file, p->type); + + return ret ? ret : ops->vidioc_qbuf(file, fh, p); +} + +static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_buffer *p = arg; + int ret = check_fmt(file, p->type); + + return ret ? ret : ops->vidioc_dqbuf(file, fh, p); +} + +static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_create_buffers *create = arg; + int ret = check_fmt(file, create->format.type); + + if (ret) + return ret; + + CLEAR_AFTER_FIELD(create, flags); + + v4l_sanitize_format(&create->format); + + ret = ops->vidioc_create_bufs(file, fh, create); + + if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || + create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) + create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; + + return ret; +} + +static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_buffer *b = arg; + int ret = check_fmt(file, b->type); + + return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); +} + +static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_streamparm *p = arg; + v4l2_std_id std; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; + if (ops->vidioc_g_parm) + return ops->vidioc_g_parm(file, fh, p); + if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && + p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + return -EINVAL; + if (vfd->device_caps & V4L2_CAP_READWRITE) + p->parm.capture.readbuffers = 2; + ret = ops->vidioc_g_std(file, fh, &std); + if (ret == 0) + v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); + return ret; +} + +static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_streamparm *p = arg; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; + + /* Note: extendedmode is never used in drivers */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) { + memset(p->parm.output.reserved, 0, + sizeof(p->parm.output.reserved)); + p->parm.output.extendedmode = 0; + p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; + } else { + memset(p->parm.capture.reserved, 0, + sizeof(p->parm.capture.reserved)); + p->parm.capture.extendedmode = 0; + p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; + } + return ops->vidioc_s_parm(file, fh, p); +} + +static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_queryctrl *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + + if (vfh && vfh->ctrl_handler) + return v4l2_queryctrl(vfh->ctrl_handler, p); + if (vfd->ctrl_handler) + return v4l2_queryctrl(vfd->ctrl_handler, p); + if (ops->vidioc_queryctrl) + return ops->vidioc_queryctrl(file, fh, p); + return -ENOTTY; +} + +static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_query_ext_ctrl *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + + if (vfh && vfh->ctrl_handler) + return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); + if (vfd->ctrl_handler) + return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); + if (ops->vidioc_query_ext_ctrl) + return ops->vidioc_query_ext_ctrl(file, fh, p); + return -ENOTTY; +} + +static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_querymenu *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + + if (vfh && vfh->ctrl_handler) + return v4l2_querymenu(vfh->ctrl_handler, p); + if (vfd->ctrl_handler) + return v4l2_querymenu(vfd->ctrl_handler, p); + if (ops->vidioc_querymenu) + return ops->vidioc_querymenu(file, fh, p); + return -ENOTTY; +} + +static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_control *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + struct v4l2_ext_controls ctrls; + struct v4l2_ext_control ctrl; + + if (vfh && vfh->ctrl_handler) + return v4l2_g_ctrl(vfh->ctrl_handler, p); + if (vfd->ctrl_handler) + return v4l2_g_ctrl(vfd->ctrl_handler, p); + if (ops->vidioc_g_ctrl) + return ops->vidioc_g_ctrl(file, fh, p); + if (ops->vidioc_g_ext_ctrls == NULL) + return -ENOTTY; + + ctrls.which = V4L2_CTRL_ID2WHICH(p->id); + ctrls.count = 1; + ctrls.controls = &ctrl; + ctrl.id = p->id; + ctrl.value = p->value; + if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { + int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); + + if (ret == 0) + p->value = ctrl.value; + return ret; + } + return -EINVAL; +} + +static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_control *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + struct v4l2_ext_controls ctrls; + struct v4l2_ext_control ctrl; + int ret; + + if (vfh && vfh->ctrl_handler) + return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); + if (vfd->ctrl_handler) + return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); + if (ops->vidioc_s_ctrl) + return ops->vidioc_s_ctrl(file, fh, p); + if (ops->vidioc_s_ext_ctrls == NULL) + return -ENOTTY; + + ctrls.which = V4L2_CTRL_ID2WHICH(p->id); + ctrls.count = 1; + ctrls.controls = &ctrl; + ctrl.id = p->id; + ctrl.value = p->value; + if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) + return -EINVAL; + ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); + p->value = ctrl.value; + return ret; +} + +static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_ext_controls *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + + p->error_idx = p->count; + if (vfh && vfh->ctrl_handler) + return v4l2_g_ext_ctrls(vfh->ctrl_handler, + vfd, vfd->v4l2_dev->mdev, p); + if (vfd->ctrl_handler) + return v4l2_g_ext_ctrls(vfd->ctrl_handler, + vfd, vfd->v4l2_dev->mdev, p); + if (ops->vidioc_g_ext_ctrls == NULL) + return -ENOTTY; + return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? + ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; +} + +static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_ext_controls *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + + p->error_idx = p->count; + if (vfh && vfh->ctrl_handler) + return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, + vfd, vfd->v4l2_dev->mdev, p); + if (vfd->ctrl_handler) + return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, + vfd, vfd->v4l2_dev->mdev, p); + if (ops->vidioc_s_ext_ctrls == NULL) + return -ENOTTY; + return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? + ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; +} + +static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_ext_controls *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + + p->error_idx = p->count; + if (vfh && vfh->ctrl_handler) + return v4l2_try_ext_ctrls(vfh->ctrl_handler, + vfd, vfd->v4l2_dev->mdev, p); + if (vfd->ctrl_handler) + return v4l2_try_ext_ctrls(vfd->ctrl_handler, + vfd, vfd->v4l2_dev->mdev, p); + if (ops->vidioc_try_ext_ctrls == NULL) + return -ENOTTY; + return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? + ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; +} + +/* + * The selection API specified originally that the _MPLANE buffer types + * shouldn't be used. The reasons for this are lost in the mists of time + * (or just really crappy memories). Regardless, this is really annoying + * for userspace. So to keep things simple we map _MPLANE buffer types + * to their 'regular' counterparts before calling the driver. And we + * restore it afterwards. This way applications can use either buffer + * type and drivers don't need to check for both. + */ +static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_selection *p = arg; + u32 old_type = p->type; + int ret; + + if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + ret = ops->vidioc_g_selection(file, fh, p); + p->type = old_type; + return ret; +} + +static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_selection *p = arg; + u32 old_type = p->type; + int ret; + + if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + ret = ops->vidioc_s_selection(file, fh, p); + p->type = old_type; + return ret; +} + +static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_crop *p = arg; + struct v4l2_selection s = { + .type = p->type, + }; + int ret; + + /* simulate capture crop using selection api */ + + /* crop means compose for output devices */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) + s.target = V4L2_SEL_TGT_COMPOSE; + else + s.target = V4L2_SEL_TGT_CROP; + + if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) + s.target = s.target == V4L2_SEL_TGT_COMPOSE ? + V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; + + ret = v4l_g_selection(ops, file, fh, &s); + + /* copying results to old structure on success */ + if (!ret) + p->c = s.r; + return ret; +} + +static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_crop *p = arg; + struct v4l2_selection s = { + .type = p->type, + .r = p->c, + }; + + /* simulate capture crop using selection api */ + + /* crop means compose for output devices */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) + s.target = V4L2_SEL_TGT_COMPOSE; + else + s.target = V4L2_SEL_TGT_CROP; + + if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) + s.target = s.target == V4L2_SEL_TGT_COMPOSE ? + V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; + + return v4l_s_selection(ops, file, fh, &s); +} + +static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_cropcap *p = arg; + struct v4l2_selection s = { .type = p->type }; + int ret = 0; + + /* setting trivial pixelaspect */ + p->pixelaspect.numerator = 1; + p->pixelaspect.denominator = 1; + + if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + + /* + * The determine_valid_ioctls() call already should ensure + * that this can never happen, but just in case... + */ + if (WARN_ON(!ops->vidioc_g_selection)) + return -ENOTTY; + + if (ops->vidioc_g_pixelaspect) + ret = ops->vidioc_g_pixelaspect(file, fh, s.type, + &p->pixelaspect); + + /* + * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the + * square pixel aspect ratio in that case. + */ + if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) + return ret; + + /* Use g_selection() to fill in the bounds and defrect rectangles */ + + /* obtaining bounds */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) + s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; + else + s.target = V4L2_SEL_TGT_CROP_BOUNDS; + + if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) + s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? + V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; + + ret = v4l_g_selection(ops, file, fh, &s); + if (ret) + return ret; + p->bounds = s.r; + + /* obtaining defrect */ + if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) + s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; + else + s.target = V4L2_SEL_TGT_CROP_DEFAULT; + + ret = v4l_g_selection(ops, file, fh, &s); + if (ret) + return ret; + p->defrect = s.r; + + return 0; +} + +static int v4l_log_status(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + int ret; + + if (vfd->v4l2_dev) + pr_info("%s: ================= START STATUS =================\n", + vfd->v4l2_dev->name); + ret = ops->vidioc_log_status(file, fh); + if (vfd->v4l2_dev) + pr_info("%s: ================== END STATUS ==================\n", + vfd->v4l2_dev->name); + return ret; +} + +static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ +#ifdef CONFIG_VIDEO_ADV_DEBUG + struct v4l2_dbg_register *p = arg; + struct video_device *vfd = video_devdata(file); + struct v4l2_subdev *sd; + int idx = 0; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { + if (vfd->v4l2_dev == NULL) + return -EINVAL; + v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) + if (p->match.addr == idx++) + return v4l2_subdev_call(sd, core, g_register, p); + return -EINVAL; + } + if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && + (ops->vidioc_g_chip_info || p->match.addr == 0)) + return ops->vidioc_g_register(file, fh, p); + return -EINVAL; +#else + return -ENOTTY; +#endif +} + +static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ +#ifdef CONFIG_VIDEO_ADV_DEBUG + const struct v4l2_dbg_register *p = arg; + struct video_device *vfd = video_devdata(file); + struct v4l2_subdev *sd; + int idx = 0; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { + if (vfd->v4l2_dev == NULL) + return -EINVAL; + v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) + if (p->match.addr == idx++) + return v4l2_subdev_call(sd, core, s_register, p); + return -EINVAL; + } + if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && + (ops->vidioc_g_chip_info || p->match.addr == 0)) + return ops->vidioc_s_register(file, fh, p); + return -EINVAL; +#else + return -ENOTTY; +#endif +} + +static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ +#ifdef CONFIG_VIDEO_ADV_DEBUG + struct video_device *vfd = video_devdata(file); + struct v4l2_dbg_chip_info *p = arg; + struct v4l2_subdev *sd; + int idx = 0; + + switch (p->match.type) { + case V4L2_CHIP_MATCH_BRIDGE: + if (ops->vidioc_s_register) + p->flags |= V4L2_CHIP_FL_WRITABLE; + if (ops->vidioc_g_register) + p->flags |= V4L2_CHIP_FL_READABLE; + strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); + if (ops->vidioc_g_chip_info) + return ops->vidioc_g_chip_info(file, fh, arg); + if (p->match.addr) + return -EINVAL; + return 0; + + case V4L2_CHIP_MATCH_SUBDEV: + if (vfd->v4l2_dev == NULL) + break; + v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { + if (p->match.addr != idx++) + continue; + if (sd->ops->core && sd->ops->core->s_register) + p->flags |= V4L2_CHIP_FL_WRITABLE; + if (sd->ops->core && sd->ops->core->g_register) + p->flags |= V4L2_CHIP_FL_READABLE; + strscpy(p->name, sd->name, sizeof(p->name)); + return 0; + } + break; + } + return -EINVAL; +#else + return -ENOTTY; +#endif +} + +static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); +} + +static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + return ops->vidioc_subscribe_event(fh, arg); +} + +static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + return ops->vidioc_unsubscribe_event(fh, arg); +} + +static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct v4l2_sliced_vbi_cap *p = arg; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; + + /* Clear up to type, everything after type is zeroed already */ + memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); + + return ops->vidioc_g_sliced_vbi_cap(file, fh, p); +} + +static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_frequency_band *p = arg; + enum v4l2_tuner_type type; + int err; + + if (vfd->vfl_type == VFL_TYPE_SDR) { + if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) + return -EINVAL; + type = p->type; + } else { + type = (vfd->vfl_type == VFL_TYPE_RADIO) ? + V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; + if (type != p->type) + return -EINVAL; + } + if (ops->vidioc_enum_freq_bands) { + err = ops->vidioc_enum_freq_bands(file, fh, p); + if (err != -ENOTTY) + return err; + } + if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { + struct v4l2_tuner t = { + .index = p->tuner, + .type = type, + }; + + if (p->index) + return -EINVAL; + err = ops->vidioc_g_tuner(file, fh, &t); + if (err) + return err; + p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; + p->rangelow = t.rangelow; + p->rangehigh = t.rangehigh; + p->modulation = (type == V4L2_TUNER_RADIO) ? + V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; + return 0; + } + if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { + struct v4l2_modulator m = { + .index = p->tuner, + }; + + if (type != V4L2_TUNER_RADIO) + return -EINVAL; + if (p->index) + return -EINVAL; + err = ops->vidioc_g_modulator(file, fh, &m); + if (err) + return err; + p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; + p->rangelow = m.rangelow; + p->rangehigh = m.rangehigh; + p->modulation = (type == V4L2_TUNER_RADIO) ? + V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; + return 0; + } + return -ENOTTY; +} + +struct v4l2_ioctl_info { + unsigned int ioctl; + u32 flags; + const char * const name; + int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, + void *fh, void *p); + void (*debug)(const void *arg, bool write_only); +}; + +/* This control needs a priority check */ +#define INFO_FL_PRIO (1 << 0) +/* This control can be valid if the filehandle passes a control handler. */ +#define INFO_FL_CTRL (1 << 1) +/* Queuing ioctl */ +#define INFO_FL_QUEUE (1 << 2) +/* Always copy back result, even on error */ +#define INFO_FL_ALWAYS_COPY (1 << 3) +/* Zero struct from after the field to the end */ +#define INFO_FL_CLEAR(v4l2_struct, field) \ + ((offsetof(struct v4l2_struct, field) + \ + sizeof_field(struct v4l2_struct, field)) << 16) +#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) + +#define DEFINE_V4L_STUB_FUNC(_vidioc) \ + static int v4l_stub_ ## _vidioc( \ + const struct v4l2_ioctl_ops *ops, \ + struct file *file, void *fh, void *p) \ + { \ + return ops->vidioc_ ## _vidioc(file, fh, p); \ + } + +#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ + [_IOC_NR(_ioctl)] = { \ + .ioctl = _ioctl, \ + .flags = _flags, \ + .name = #_ioctl, \ + .func = _func, \ + .debug = _debug, \ + } + +DEFINE_V4L_STUB_FUNC(g_fbuf) +DEFINE_V4L_STUB_FUNC(s_fbuf) +DEFINE_V4L_STUB_FUNC(expbuf) +DEFINE_V4L_STUB_FUNC(g_std) +DEFINE_V4L_STUB_FUNC(g_audio) +DEFINE_V4L_STUB_FUNC(s_audio) +DEFINE_V4L_STUB_FUNC(g_edid) +DEFINE_V4L_STUB_FUNC(s_edid) +DEFINE_V4L_STUB_FUNC(g_audout) +DEFINE_V4L_STUB_FUNC(s_audout) +DEFINE_V4L_STUB_FUNC(g_jpegcomp) +DEFINE_V4L_STUB_FUNC(s_jpegcomp) +DEFINE_V4L_STUB_FUNC(enumaudio) +DEFINE_V4L_STUB_FUNC(enumaudout) +DEFINE_V4L_STUB_FUNC(enum_framesizes) +DEFINE_V4L_STUB_FUNC(enum_frameintervals) +DEFINE_V4L_STUB_FUNC(g_enc_index) +DEFINE_V4L_STUB_FUNC(encoder_cmd) +DEFINE_V4L_STUB_FUNC(try_encoder_cmd) +DEFINE_V4L_STUB_FUNC(decoder_cmd) +DEFINE_V4L_STUB_FUNC(try_decoder_cmd) +DEFINE_V4L_STUB_FUNC(s_dv_timings) +DEFINE_V4L_STUB_FUNC(g_dv_timings) +DEFINE_V4L_STUB_FUNC(enum_dv_timings) +DEFINE_V4L_STUB_FUNC(query_dv_timings) +DEFINE_V4L_STUB_FUNC(dv_timings_cap) + +static const struct v4l2_ioctl_info v4l2_ioctls[] = { + IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), + IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), + IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), + IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), + IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), + IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), + IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), + IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), + IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), + IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), + IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), + IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), + IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), + IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), + IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), + IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), + IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), + IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), + IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), + IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), + IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), + IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), + IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), + IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), + IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), + IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), + IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), + IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), + IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), + IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), + IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), + IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), + IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), + IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), + IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), + IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), + IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), + IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), + IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), + IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)), + IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), + IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), + IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), + IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), + IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), + IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), + IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), + IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), + IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), + IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), + IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), + IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), + IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)), + IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), + IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), + IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), + IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), + IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), + IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), + IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), + IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), + IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), + IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), + IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), + IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), +}; +#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) + +static bool v4l2_is_known_ioctl(unsigned int cmd) +{ + if (_IOC_NR(cmd) >= V4L2_IOCTLS) + return false; + return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; +} + +static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, + struct v4l2_fh *vfh, unsigned int cmd, + void *arg) +{ + if (_IOC_NR(cmd) >= V4L2_IOCTLS) + return vdev->lock; + if (vfh && vfh->m2m_ctx && + (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { + if (vfh->m2m_ctx->q_lock) + return vfh->m2m_ctx->q_lock; + } + if (vdev->queue && vdev->queue->lock && + (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) + return vdev->queue->lock; + return vdev->lock; +} + +/* Common ioctl debug function. This function can be used by + external ioctl messages as well as internal V4L ioctl */ +void v4l_printk_ioctl(const char *prefix, unsigned int cmd) +{ + const char *dir, *type; + + if (prefix) + printk(KERN_DEBUG "%s: ", prefix); + + switch (_IOC_TYPE(cmd)) { + case 'd': + type = "v4l2_int"; + break; + case 'V': + if (_IOC_NR(cmd) >= V4L2_IOCTLS) { + type = "v4l2"; + break; + } + pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); + return; + default: + type = "unknown"; + break; + } + + switch (_IOC_DIR(cmd)) { + case _IOC_NONE: dir = "--"; break; + case _IOC_READ: dir = "r-"; break; + case _IOC_WRITE: dir = "-w"; break; + case _IOC_READ | _IOC_WRITE: dir = "rw"; break; + default: dir = "*ERR*"; break; + } + pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", + type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); +} +EXPORT_SYMBOL(v4l_printk_ioctl); + +static long __video_do_ioctl(struct file *file, + unsigned int cmd, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct mutex *req_queue_lock = NULL; + struct mutex *lock; /* ioctl serialization mutex */ + const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; + bool write_only = false; + struct v4l2_ioctl_info default_info; + const struct v4l2_ioctl_info *info; + void *fh = file->private_data; + struct v4l2_fh *vfh = NULL; + int dev_debug = vfd->dev_debug; + long ret = -ENOTTY; + + if (ops == NULL) { + pr_warn("%s: has no ioctl_ops.\n", + video_device_node_name(vfd)); + return ret; + } + + if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) + vfh = file->private_data; + + /* + * We need to serialize streamon/off with queueing new requests. + * These ioctls may trigger the cancellation of a streaming + * operation, and that should not be mixed with queueing a new + * request at the same time. + */ + if (v4l2_device_supports_requests(vfd->v4l2_dev) && + (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { + req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; + + if (mutex_lock_interruptible(req_queue_lock)) + return -ERESTARTSYS; + } + + lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); + + if (lock && mutex_lock_interruptible(lock)) { + if (req_queue_lock) + mutex_unlock(req_queue_lock); + return -ERESTARTSYS; + } + + if (!video_is_registered(vfd)) { + ret = -ENODEV; + goto unlock; + } + + if (v4l2_is_known_ioctl(cmd)) { + info = &v4l2_ioctls[_IOC_NR(cmd)]; + + if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && + !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) + goto done; + + if (vfh && (info->flags & INFO_FL_PRIO)) { + ret = v4l2_prio_check(vfd->prio, vfh->prio); + if (ret) + goto done; + } + } else { + default_info.ioctl = cmd; + default_info.flags = 0; + default_info.debug = v4l_print_default; + info = &default_info; + } + + write_only = _IOC_DIR(cmd) == _IOC_WRITE; + if (info != &default_info) { + ret = info->func(ops, file, fh, arg); + } else if (!ops->vidioc_default) { + ret = -ENOTTY; + } else { + ret = ops->vidioc_default(file, fh, + vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, + cmd, arg); + } + +done: + if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { + if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && + (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) + goto unlock; + + v4l_printk_ioctl(video_device_node_name(vfd), cmd); + if (ret < 0) + pr_cont(": error %ld", ret); + if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) + pr_cont("\n"); + else if (_IOC_DIR(cmd) == _IOC_NONE) + info->debug(arg, write_only); + else { + pr_cont(": "); + info->debug(arg, write_only); + } + } + +unlock: + if (lock) + mutex_unlock(lock); + if (req_queue_lock) + mutex_unlock(req_queue_lock); + return ret; +} + +static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, + void __user **user_ptr, void ***kernel_ptr) +{ + int ret = 0; + + switch (cmd) { + case VIDIOC_PREPARE_BUF: + case VIDIOC_QUERYBUF: + case VIDIOC_QBUF: + case VIDIOC_DQBUF: { + struct v4l2_buffer *buf = parg; + + if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { + if (buf->length > VIDEO_MAX_PLANES) { + ret = -EINVAL; + break; + } + *user_ptr = (void __user *)buf->m.planes; + *kernel_ptr = (void **)&buf->m.planes; + *array_size = sizeof(struct v4l2_plane) * buf->length; + ret = 1; + } + break; + } + + case VIDIOC_G_EDID: + case VIDIOC_S_EDID: { + struct v4l2_edid *edid = parg; + + if (edid->blocks) { + if (edid->blocks > 256) { + ret = -EINVAL; + break; + } + *user_ptr = (void __user *)edid->edid; + *kernel_ptr = (void **)&edid->edid; + *array_size = edid->blocks * 128; + ret = 1; + } + break; + } + + case VIDIOC_S_EXT_CTRLS: + case VIDIOC_G_EXT_CTRLS: + case VIDIOC_TRY_EXT_CTRLS: { + struct v4l2_ext_controls *ctrls = parg; + + if (ctrls->count != 0) { + if (ctrls->count > V4L2_CID_MAX_CTRLS) { + ret = -EINVAL; + break; + } + *user_ptr = (void __user *)ctrls->controls; + *kernel_ptr = (void **)&ctrls->controls; + *array_size = sizeof(struct v4l2_ext_control) + * ctrls->count; + ret = 1; + } + break; + } + case VIDIOC_G_FMT: + case VIDIOC_S_FMT: + case VIDIOC_TRY_FMT: { + struct v4l2_format *fmt = parg; + + if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && + fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) + break; + if (fmt->fmt.win.clipcount > 2048) + return -EINVAL; + if (!fmt->fmt.win.clipcount) + break; + + *user_ptr = (void __user *)fmt->fmt.win.clips; + *kernel_ptr = (void **)&fmt->fmt.win.clips; + *array_size = sizeof(struct v4l2_clip) + * fmt->fmt.win.clipcount; + + ret = 1; + break; + } + } + + return ret; +} + +static unsigned int video_translate_cmd(unsigned int cmd) +{ +#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) + switch (cmd) { + case VIDIOC_DQEVENT_TIME32: + return VIDIOC_DQEVENT; + case VIDIOC_QUERYBUF_TIME32: + return VIDIOC_QUERYBUF; + case VIDIOC_QBUF_TIME32: + return VIDIOC_QBUF; + case VIDIOC_DQBUF_TIME32: + return VIDIOC_DQBUF; + case VIDIOC_PREPARE_BUF_TIME32: + return VIDIOC_PREPARE_BUF; + } +#endif + if (in_compat_syscall()) + return v4l2_compat_translate_cmd(cmd); + + return cmd; +} + +static int video_get_user(void __user *arg, void *parg, + unsigned int real_cmd, unsigned int cmd, + bool *always_copy) +{ + unsigned int n = _IOC_SIZE(real_cmd); + int err = 0; + + if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { + /* read-only ioctl */ + memset(parg, 0, n); + return 0; + } + + /* + * In some cases, only a few fields are used as input, + * i.e. when the app sets "index" and then the driver + * fills in the rest of the structure for the thing + * with that index. We only need to copy up the first + * non-input field. + */ + if (v4l2_is_known_ioctl(real_cmd)) { + u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; + + if (flags & INFO_FL_CLEAR_MASK) + n = (flags & INFO_FL_CLEAR_MASK) >> 16; + *always_copy = flags & INFO_FL_ALWAYS_COPY; + } + + if (cmd == real_cmd) { + if (copy_from_user(parg, (void __user *)arg, n)) + err = -EFAULT; + } else if (in_compat_syscall()) { + memset(parg, 0, n); + err = v4l2_compat_get_user(arg, parg, cmd); + } else { + memset(parg, 0, n); +#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) + switch (cmd) { + case VIDIOC_QUERYBUF_TIME32: + case VIDIOC_QBUF_TIME32: + case VIDIOC_DQBUF_TIME32: + case VIDIOC_PREPARE_BUF_TIME32: { + struct v4l2_buffer_time32 vb32; + struct v4l2_buffer *vb = parg; + + if (copy_from_user(&vb32, arg, sizeof(vb32))) + return -EFAULT; + + *vb = (struct v4l2_buffer) { + .index = vb32.index, + .type = vb32.type, + .bytesused = vb32.bytesused, + .flags = vb32.flags, + .field = vb32.field, + .timestamp.tv_sec = vb32.timestamp.tv_sec, + .timestamp.tv_usec = vb32.timestamp.tv_usec, + .timecode = vb32.timecode, + .sequence = vb32.sequence, + .memory = vb32.memory, + .m.userptr = vb32.m.userptr, + .length = vb32.length, + .request_fd = vb32.request_fd, + }; + break; + } + } +#endif + } + + /* zero out anything we don't copy from userspace */ + if (!err && n < _IOC_SIZE(real_cmd)) + memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); + return err; +} + +static int video_put_user(void __user *arg, void *parg, + unsigned int real_cmd, unsigned int cmd) +{ + if (!(_IOC_DIR(cmd) & _IOC_READ)) + return 0; + + if (cmd == real_cmd) { + /* Copy results into user buffer */ + if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) + return -EFAULT; + return 0; + } + + if (in_compat_syscall()) + return v4l2_compat_put_user(arg, parg, cmd); + +#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) + switch (cmd) { + case VIDIOC_DQEVENT_TIME32: { + struct v4l2_event *ev = parg; + struct v4l2_event_time32 ev32; + + memset(&ev32, 0, sizeof(ev32)); + + ev32.type = ev->type; + ev32.pending = ev->pending; + ev32.sequence = ev->sequence; + ev32.timestamp.tv_sec = ev->timestamp.tv_sec; + ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; + ev32.id = ev->id; + + memcpy(&ev32.u, &ev->u, sizeof(ev->u)); + memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); + + if (copy_to_user(arg, &ev32, sizeof(ev32))) + return -EFAULT; + break; + } + case VIDIOC_QUERYBUF_TIME32: + case VIDIOC_QBUF_TIME32: + case VIDIOC_DQBUF_TIME32: + case VIDIOC_PREPARE_BUF_TIME32: { + struct v4l2_buffer *vb = parg; + struct v4l2_buffer_time32 vb32; + + memset(&vb32, 0, sizeof(vb32)); + + vb32.index = vb->index; + vb32.type = vb->type; + vb32.bytesused = vb->bytesused; + vb32.flags = vb->flags; + vb32.field = vb->field; + vb32.timestamp.tv_sec = vb->timestamp.tv_sec; + vb32.timestamp.tv_usec = vb->timestamp.tv_usec; + vb32.timecode = vb->timecode; + vb32.sequence = vb->sequence; + vb32.memory = vb->memory; + vb32.m.userptr = vb->m.userptr; + vb32.length = vb->length; + vb32.request_fd = vb->request_fd; + + if (copy_to_user(arg, &vb32, sizeof(vb32))) + return -EFAULT; + break; + } + } +#endif + + return 0; +} + +long +video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, + v4l2_kioctl func) +{ + char sbuf[128]; + void *mbuf = NULL, *array_buf = NULL; + void *parg = (void *)arg; + long err = -EINVAL; + bool has_array_args; + bool always_copy = false; + size_t array_size = 0; + void __user *user_ptr = NULL; + void **kernel_ptr = NULL; + unsigned int cmd = video_translate_cmd(orig_cmd); + const size_t ioc_size = _IOC_SIZE(cmd); + + /* Copy arguments into temp kernel buffer */ + if (_IOC_DIR(cmd) != _IOC_NONE) { + if (ioc_size <= sizeof(sbuf)) { + parg = sbuf; + } else { + /* too big to allocate from stack */ + mbuf = kmalloc(ioc_size, GFP_KERNEL); + if (NULL == mbuf) + return -ENOMEM; + parg = mbuf; + } + + err = video_get_user((void __user *)arg, parg, cmd, + orig_cmd, &always_copy); + if (err) + goto out; + } + + err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); + if (err < 0) + goto out; + has_array_args = err; + + if (has_array_args) { + array_buf = kvmalloc(array_size, GFP_KERNEL); + err = -ENOMEM; + if (array_buf == NULL) + goto out; + if (in_compat_syscall()) + err = v4l2_compat_get_array_args(file, array_buf, + user_ptr, array_size, + orig_cmd, parg); + else + err = copy_from_user(array_buf, user_ptr, array_size) ? + -EFAULT : 0; + if (err) + goto out; + *kernel_ptr = array_buf; + } + + /* Handles IOCTL */ + err = func(file, cmd, parg); + if (err == -ENOTTY || err == -ENOIOCTLCMD) { + err = -ENOTTY; + goto out; + } + + if (err == 0) { + if (cmd == VIDIOC_DQBUF) + trace_v4l2_dqbuf(video_devdata(file)->minor, parg); + else if (cmd == VIDIOC_QBUF) + trace_v4l2_qbuf(video_devdata(file)->minor, parg); + } + + /* + * Some ioctls can return an error, but still have valid + * results that must be returned. + */ + if (err < 0 && !always_copy) + goto out; + + if (has_array_args) { + *kernel_ptr = (void __force *)user_ptr; + if (in_compat_syscall()) { + int put_err; + + put_err = v4l2_compat_put_array_args(file, user_ptr, + array_buf, + array_size, + orig_cmd, parg); + if (put_err) + err = put_err; + } else if (copy_to_user(user_ptr, array_buf, array_size)) { + err = -EFAULT; + } + } + + if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) + err = -EFAULT; +out: + kvfree(array_buf); + kfree(mbuf); + return err; +} + +long video_ioctl2(struct file *file, + unsigned int cmd, unsigned long arg) +{ + return video_usercopy(file, cmd, arg, __video_do_ioctl); +} +EXPORT_SYMBOL(video_ioctl2); |