diff options
Diffstat (limited to 'drivers/media/video/v4l2-ioctl.c')
| -rw-r--r-- | drivers/media/video/v4l2-ioctl.c | 2330 |
1 files changed, 0 insertions, 2330 deletions
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c deleted file mode 100644 index 6bc47fc..0000000 --- a/drivers/media/video/v4l2-ioctl.c +++ /dev/null @@ -1,2330 +0,0 @@ -/* - * Video capture interface for Linux version 2 - * - * A generic framework to process V4L2 ioctl commands. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) - * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2) - */ - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/version.h> - -#include <linux/videodev2.h> - -#include <media/v4l2-common.h> -#include <media/v4l2-ioctl.h> -#include <media/v4l2-ctrls.h> -#include <media/v4l2-fh.h> -#include <media/v4l2-event.h> -#include <media/v4l2-device.h> -#include <media/v4l2-chip-ident.h> -#include <media/videobuf2-core.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)) - -struct std_descr { - v4l2_std_id std; - const char *descr; -}; - -static const struct std_descr standards[] = { - { V4L2_STD_NTSC, "NTSC" }, - { V4L2_STD_NTSC_M, "NTSC-M" }, - { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, - { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, - { V4L2_STD_NTSC_443, "NTSC-443" }, - { V4L2_STD_PAL, "PAL" }, - { V4L2_STD_PAL_BG, "PAL-BG" }, - { V4L2_STD_PAL_B, "PAL-B" }, - { V4L2_STD_PAL_B1, "PAL-B1" }, - { V4L2_STD_PAL_G, "PAL-G" }, - { V4L2_STD_PAL_H, "PAL-H" }, - { V4L2_STD_PAL_I, "PAL-I" }, - { V4L2_STD_PAL_DK, "PAL-DK" }, - { V4L2_STD_PAL_D, "PAL-D" }, - { V4L2_STD_PAL_D1, "PAL-D1" }, - { V4L2_STD_PAL_K, "PAL-K" }, - { V4L2_STD_PAL_M, "PAL-M" }, - { V4L2_STD_PAL_N, "PAL-N" }, - { V4L2_STD_PAL_Nc, "PAL-Nc" }, - { V4L2_STD_PAL_60, "PAL-60" }, - { V4L2_STD_SECAM, "SECAM" }, - { V4L2_STD_SECAM_B, "SECAM-B" }, - { V4L2_STD_SECAM_G, "SECAM-G" }, - { V4L2_STD_SECAM_H, "SECAM-H" }, - { V4L2_STD_SECAM_DK, "SECAM-DK" }, - { V4L2_STD_SECAM_D, "SECAM-D" }, - { V4L2_STD_SECAM_K, "SECAM-K" }, - { V4L2_STD_SECAM_K1, "SECAM-K1" }, - { V4L2_STD_SECAM_L, "SECAM-L" }, - { V4L2_STD_SECAM_LC, "SECAM-Lc" }, - { 0, "Unknown" } -}; - -/* video4linux standard ID conversion to standard name - */ -const char *v4l2_norm_to_name(v4l2_std_id id) -{ - u32 myid = id; - int i; - - /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle - 64 bit comparations. So, on that architecture, with some gcc - variants, compilation fails. Currently, the max value is 30bit wide. - */ - BUG_ON(myid != id); - - for (i = 0; standards[i].std; i++) - if (myid == standards[i].std) - break; - return standards[i].descr; -} -EXPORT_SYMBOL(v4l2_norm_to_name); - -/* Returns frame period for the given standard */ -void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) -{ - if (id & V4L2_STD_525_60) { - frameperiod->numerator = 1001; - frameperiod->denominator = 30000; - } else { - frameperiod->numerator = 1; - frameperiod->denominator = 25; - } -} -EXPORT_SYMBOL(v4l2_video_std_frame_period); - -/* Fill in the fields of a v4l2_standard structure according to the - 'id' and 'transmission' parameters. Returns negative on error. */ -int v4l2_video_std_construct(struct v4l2_standard *vs, - int id, const char *name) -{ - vs->id = id; - v4l2_video_std_frame_period(id, &vs->frameperiod); - vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; - strlcpy(vs->name, name, sizeof(vs->name)); - return 0; -} -EXPORT_SYMBOL(v4l2_video_std_construct); - -/* ----------------------------------------------------------------- */ -/* some arrays for pretty-printing debug messages of enum types */ - -const char *v4l2_field_names[] = { - [V4L2_FIELD_ANY] = "any", - [V4L2_FIELD_NONE] = "none", - [V4L2_FIELD_TOP] = "top", - [V4L2_FIELD_BOTTOM] = "bottom", - [V4L2_FIELD_INTERLACED] = "interlaced", - [V4L2_FIELD_SEQ_TB] = "seq-tb", - [V4L2_FIELD_SEQ_BT] = "seq-bt", - [V4L2_FIELD_ALTERNATE] = "alternate", - [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", - [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", -}; -EXPORT_SYMBOL(v4l2_field_names); - -const char *v4l2_type_names[] = { - [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", -}; -EXPORT_SYMBOL(v4l2_type_names); - -static const char *v4l2_memory_names[] = { - [V4L2_MEMORY_MMAP] = "mmap", - [V4L2_MEMORY_USERPTR] = "userptr", - [V4L2_MEMORY_OVERLAY] = "overlay", -}; - -#define prt_names(a, arr) ((((a) >= 0) && ((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", - p->driver, p->card, 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, 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, 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, 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, p->name, p->capability, p->mode); -} - -static void v4l_print_fmtdesc(const void *arg, bool write_only) -{ - const struct v4l2_fmtdesc *p = arg; - - pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%s'\n", - p->index, prt_names(p->type, v4l2_type_names), - p->flags, (p->pixelformat & 0xff), - (p->pixelformat >> 8) & 0xff, - (p->pixelformat >> 16) & 0xff, - (p->pixelformat >> 24) & 0xff, - 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_clip *clip; - unsigned i; - - pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); - switch (p->type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - pix = &p->fmt.pix; - pr_cont(", width=%u, height=%u, " - "pixelformat=%c%c%c%c, field=%s, " - "bytesperline=%u sizeimage=%u, colorspace=%d\n", - pix->width, pix->height, - (pix->pixelformat & 0xff), - (pix->pixelformat >> 8) & 0xff, - (pix->pixelformat >> 16) & 0xff, - (pix->pixelformat >> 24) & 0xff, - prt_names(pix->field, v4l2_field_names), - pix->bytesperline, pix->sizeimage, - pix->colorspace); - break; - case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - mp = &p->fmt.pix_mp; - pr_cont(", width=%u, height=%u, " - "format=%c%c%c%c, field=%s, " - "colorspace=%d, num_planes=%u\n", - mp->width, mp->height, - (mp->pixelformat & 0xff), - (mp->pixelformat >> 8) & 0xff, - (mp->pixelformat >> 16) & 0xff, - (mp->pixelformat >> 24) & 0xff, - prt_names(mp->field, v4l2_field_names), - mp->colorspace, mp->num_planes); - for (i = 0; i < mp->num_planes; i++) - printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, - mp->plane_fmt[i].bytesperline, - mp->plane_fmt[i].sizeimage); - break; - case V4L2_BUF_TYPE_VIDEO_OVERLAY: - case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - win = &p->fmt.win; - pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, " - "chromakey=0x%08x, 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->bitmap, win->global_alpha); - clip = win->clips; - for (i = 0; i < win->clipcount; i++) { - printk(KERN_DEBUG "clip %u: wxh=%dx%d, x,y=%d,%d\n", - i, clip->c.width, clip->c.height, - clip->c.left, clip->c.top); - clip = clip->next; - } - break; - case V4L2_BUF_TYPE_VBI_CAPTURE: - case V4L2_BUF_TYPE_VBI_OUTPUT: - vbi = &p->fmt.vbi; - pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, " - "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n", - vbi->sampling_rate, vbi->offset, - vbi->samples_per_line, - (vbi->sample_format & 0xff), - (vbi->sample_format >> 8) & 0xff, - (vbi->sample_format >> 16) & 0xff, - (vbi->sample_format >> 24) & 0xff, - vbi->start[0], vbi->start[1], - vbi->count[0], vbi->count[1]); - break; - case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - sliced = &p->fmt.sliced; - pr_cont(", service_set=0x%08x, io_size=%d\n", - sliced->service_set, sliced->io_size); - for (i = 0; i < 24; i++) - printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, - sliced->service_lines[0][i], - sliced->service_lines[1][i]); - break; - case V4L2_BUF_TYPE_PRIVATE: - pr_cont("\n"); - break; - } -} - -static void v4l_print_framebuffer(const void *arg, bool write_only) -{ - const struct v4l2_framebuffer *p = arg; - - pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, " - "height=%u, pixelformat=%c%c%c%c, " - "bytesperline=%u sizeimage=%u, colorspace=%d\n", - p->capability, p->flags, p->base, - p->fmt.width, p->fmt.height, - (p->fmt.pixelformat & 0xff), - (p->fmt.pixelformat >> 8) & 0xff, - (p->fmt.pixelformat >> 16) & 0xff, - (p->fmt.pixelformat >> 24) & 0xff, - p->fmt.bytesperline, p->fmt.sizeimage, - p->fmt.colorspace); -} - -static void v4l_print_buftype(const void *arg, bool write_only) -{ - pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); -} - -static void v4l_print_modulator(const void *arg, bool write_only) -{ - const struct v4l2_modulator *p = arg; - - if (write_only) - pr_cont("index=%u, txsubchans=0x%x", p->index, p->txsubchans); - else - pr_cont("index=%u, name=%s, capability=0x%x, " - "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", - p->index, 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, 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, p->name, - p->frameperiod.numerator, - p->frameperiod.denominator, - p->framelines); -} - -static void v4l_print_std(const void *arg, bool write_only) -{ - pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); -} - -static void v4l_print_hw_freq_seek(const void *arg, bool write_only) -{ - const struct v4l2_hw_freq_seek *p = arg; - - pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, " - "rangelow=%u, rangehigh=%u\n", - p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, - p->rangelow, p->rangehigh); -} - -static void v4l_print_requestbuffers(const void *arg, bool write_only) -{ - const struct v4l2_requestbuffers *p = arg; - - pr_cont("count=%d, type=%s, memory=%s\n", - p->count, - prt_names(p->type, v4l2_type_names), - prt_names(p->memory, v4l2_memory_names)); -} - -static void v4l_print_buffer(const void *arg, bool write_only) -{ - const struct v4l2_buffer *p = arg; - const struct v4l2_timecode *tc = &p->timecode; - const struct v4l2_plane *plane; - int i; - - pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, " - "flags=0x%08x, field=%s, sequence=%d, memory=%s", - p->timestamp.tv_sec / 3600, - (int)(p->timestamp.tv_sec / 60) % 60, - (int)(p->timestamp.tv_sec % 60), - (long)p->timestamp.tv_usec, - p->index, - prt_names(p->type, v4l2_type_names), - p->flags, prt_names(p->field, v4l2_field_names), - p->sequence, prt_names(p->memory, v4l2_memory_names)); - - if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { - pr_cont("\n"); - for (i = 0; i < p->length; ++i) { - plane = &p->m.planes[i]; - printk(KERN_DEBUG - "plane %d: bytesused=%d, data_offset=0x%08x " - "offset/userptr=0x%lx, length=%d\n", - i, plane->bytesused, plane->data_offset, - plane->m.userptr, plane->length); - } - } else { - pr_cont("bytesused=%d, offset/userptr=0x%lx, length=%d\n", - p->bytesused, p->m.userptr, p->length); - } - - printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, " - "flags=0x%08x, frames=%d, userbits=0x%08x\n", - tc->hours, tc->minutes, tc->seconds, - tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); -} - -static void v4l_print_create_buffers(const void *arg, bool write_only) -{ - const struct v4l2_create_buffers *p = arg; - - pr_cont("index=%d, count=%d, memory=%s, ", - p->index, p->count, - prt_names(p->memory, v4l2_memory_names)); - v4l_print_format(&p->format, write_only); -} - -static void v4l_print_streamparm(const void *arg, bool write_only) -{ - const struct v4l2_streamparm *p = arg; - - pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); - - if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || - p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { - const struct v4l2_captureparm *c = &p->parm.capture; - - pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, " - "extendedmode=%d, readbuffers=%d\n", - c->capability, c->capturemode, - c->timeperframe.numerator, c->timeperframe.denominator, - c->extendedmode, c->readbuffers); - } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || - p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { - const struct v4l2_outputparm *c = &p->parm.output; - - pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, " - "extendedmode=%d, writebuffers=%d\n", - c->capability, c->outputmode, - c->timeperframe.numerator, c->timeperframe.denominator, - c->extendedmode, c->writebuffers); - } -} - -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, p->name, - p->minimum, p->maximum, - p->step, p->default_value, p->flags); -} - -static void v4l_print_querymenu(const void *arg, bool write_only) -{ - const struct v4l2_querymenu *p = arg; - - pr_cont("id=0x%x, index=%d\n", p->id, p->index); -} - -static void v4l_print_control(const void *arg, bool write_only) -{ - const struct v4l2_control *p = arg; - - pr_cont("id=0x%x, value=%d\n", p->id, p->value); -} - -static void v4l_print_ext_controls(const void *arg, bool write_only) -{ - const struct v4l2_ext_controls *p = arg; - int i; - - pr_cont("class=0x%x, count=%d, error_idx=%d", - p->ctrl_class, p->count, p->error_idx); - for (i = 0; i < p->count; i++) { - if (p->controls[i].size) - pr_cont(", id/val=0x%x/0x%x", - p->controls[i].id, p->controls[i].value); - else - pr_cont(", id/size=0x%x/%u", - p->controls[i].id, p->controls[i].size); - } - pr_cont("\n"); -} - -static void v4l_print_cropcap(const void *arg, bool write_only) -{ - const struct v4l2_cropcap *p = arg; - - pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, " - "defrect wxh=%dx%d, x,y=%d,%d\n, " - "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_ident(const void *arg, bool write_only) -{ - const struct v4l2_dbg_chip_ident *p = arg; - - pr_cont("type=%u, ", p->match.type); - if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) - pr_cont("name=%s, ", p->match.name); - else - pr_cont("addr=%u, ", p->match.addr); - pr_cont("chip_ident=%u, revision=0x%x\n", - p->ident, p->revision); -} - -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, ", 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_enum_presets(const void *arg, bool write_only) -{ - const struct v4l2_dv_enum_preset *p = arg; - - pr_cont("index=%u, preset=%u, name=%s, width=%u, height=%u\n", - p->index, p->preset, p->name, p->width, p->height); -} - -static void v4l_print_dv_preset(const void *arg, bool write_only) -{ - const struct v4l2_dv_preset *p = arg; - - pr_cont("preset=%u\n", p->preset); -} - -static void v4l_print_dv_timings(const void *arg, bool write_only) -{ - const struct v4l2_dv_timings *p = arg; - - switch (p->type) { - case V4L2_DV_BT_656_1120: - pr_cont("type=bt-656/1120, interlaced=%u, " - "pixelclock=%llu, " - "width=%u, height=%u, polarities=0x%x, " - "hfrontporch=%u, hsync=%u, " - "hbackporch=%u, vfrontporch=%u, " - "vsync=%u, vbackporch=%u, " - "il_vfrontporch=%u, il_vsync=%u, " - "il_vbackporch=%u, standards=0x%x, flags=0x%x\n", - p->bt.interlaced, p->bt.pixelclock, - p->bt.width, p->bt.height, - p->bt.polarities, p->bt.hfrontporch, - p->bt.hsync, p->bt.hbackporch, - p->bt.vfrontporch, p->bt.vsync, - p->bt.vbackporch, p->bt.il_vfrontporch, - p->bt.il_vsync, p->bt.il_vbackporch, - p->bt.standards, p->bt.flags); - break; - default: - pr_cont("type=%d\n", p->type); - break; - } -} - -static void v4l_print_enum_dv_timings(const void *arg, bool write_only) -{ - const struct v4l2_enum_dv_timings *p = arg; - - pr_cont("index=%u, ", p->index); - v4l_print_dv_timings(&p->timings, write_only); -} - -static void v4l_print_dv_timings_cap(const void *arg, bool write_only) -{ - const struct v4l2_dv_timings_cap *p = arg; - - switch (p->type) { - case V4L2_DV_BT_656_1120: - pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, " - "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", - p->bt.min_width, p->bt.max_width, - p->bt.min_height, p->bt.max_height, - p->bt.min_pixelclock, p->bt.max_pixelclock, - p->bt.standards, p->bt.capabilities); - break; - default: - pr_cont("type=%u\n", p->type); - break; - } -} - -static void v4l_print_frmsizeenum(const void *arg, bool write_only) -{ - const struct v4l2_frmsizeenum *p = arg; - - pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", - p->index, - (p->pixel_format & 0xff), - (p->pixel_format >> 8) & 0xff, - (p->pixel_format >> 16) & 0xff, - (p->pixel_format >> 24) & 0xff, - p->type); - switch (p->type) { - case V4L2_FRMSIZE_TYPE_DISCRETE: - pr_cont(" wxh=%ux%u\n", - p->discrete.width, p->discrete.height); - break; - case V4L2_FRMSIZE_TYPE_STEPWISE: - pr_cont(" min=%ux%u, max=%ux%u, step=%ux%u\n", - p->stepwise.min_width, p->stepwise.min_height, - p->stepwise.step_width, p->stepwise.step_height, - p->stepwise.max_width, p->stepwise.max_height); - break; - case V4L2_FRMSIZE_TYPE_CONTINUOUS: - /* fall through */ - default: - pr_cont("\n"); - break; - } -} - -static void v4l_print_frmivalenum(const void *arg, bool write_only) -{ - const struct v4l2_frmivalenum *p = arg; - - pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", - p->index, - (p->pixel_format & 0xff), - (p->pixel_format >> 8) & 0xff, - (p->pixel_format >> 16) & 0xff, - (p->pixel_format >> 24) & 0xff, - p->width, p->height, p->type); - switch (p->type) { - case V4L2_FRMIVAL_TYPE_DISCRETE: - pr_cont(" fps=%d/%d\n", - p->discrete.numerator, - p->discrete.denominator); - break; - case V4L2_FRMIVAL_TYPE_STEPWISE: - pr_cont(" min=%d/%d, max=%d/%d, step=%d/%d\n", - p->stepwise.min.numerator, - p->stepwise.min.denominator, - p->stepwise.max.numerator, - p->stepwise.max.denominator, - p->stepwise.step.numerator, - p->stepwise.step.denominator); - break; - case V4L2_FRMIVAL_TYPE_CONTINUOUS: - /* fall through */ - default: - pr_cont("\n"); - break; - } -} - -static void v4l_print_event(const void *arg, bool write_only) -{ - const struct v4l2_event *p = arg; - const struct v4l2_event_ctrl *c; - - pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, " - "timestamp=%lu.%9.9lu\n", - p->type, p->pending, p->sequence, p->id, - p->timestamp.tv_sec, p->timestamp.tv_nsec); - switch (p->type) { - case V4L2_EVENT_VSYNC: - printk(KERN_DEBUG "field=%s\n", - prt_names(p->u.vsync.field, v4l2_field_names)); - break; - case V4L2_EVENT_CTRL: - c = &p->u.ctrl; - printk(KERN_DEBUG "changes=0x%x, type=%u, ", - c->changes, c->type); - if (c->type == V4L2_CTRL_TYPE_INTEGER64) - pr_cont("value64=%lld, ", c->value64); - else - pr_cont("value=%d, ", c->value); - pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d," - " default_value=%d\n", - c->flags, c->minimum, c->maximum, - c->step, c->default_value); - break; - case V4L2_EVENT_FRAME_SYNC: - pr_cont("frame_sequence=%u\n", - p->u.frame_sync.frame_sequence); - break; - } -} - -static void v4l_print_event_subscription(const void *arg, bool write_only) -{ - const struct v4l2_event_subscription *p = arg; - - pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", - p->type, p->id, p->flags); -} - -static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) -{ - const struct v4l2_sliced_vbi_cap *p = arg; - int i; - - pr_cont("type=%s, service_set=0x%08x\n", - prt_names(p->type, v4l2_type_names), p->service_set); - for (i = 0; i < 24; i++) - printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, - p->service_lines[0][i], - p->service_lines[1][i]); -} - -static void v4l_print_freq_band(const void *arg, bool write_only) -{ - const struct v4l2_frequency_band *p = arg; - - pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, " - "rangelow=%u, rangehigh=%u, modulation=0x%x\n", - p->tuner, p->type, p->index, - p->capability, p->rangelow, - p->rangehigh, p->modulation); -} - -static void v4l_print_u32(const void *arg, bool write_only) -{ - pr_cont("value=%u\n", *(const u32 *)arg); -} - -static void v4l_print_newline(const void *arg, bool write_only) -{ - pr_cont("\n"); -} - -static void v4l_print_default(const void *arg, bool write_only) -{ - pr_cont("driver-specific ioctl\n"); -} - -static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) -{ - __u32 i; - - /* zero the reserved fields */ - c->reserved[0] = c->reserved[1] = 0; - for (i = 0; i < c->count; i++) - c->controls[i].reserved2[0] = 0; - - /* V4L2_CID_PRIVATE_BASE cannot be used as control class - when using extended controls. - Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL - is it allowed for backwards compatibility. - */ - if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE) - return 0; - /* Check that all controls are from the same control class. */ - for (i = 0; i < c->count; i++) { - if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) { - c->error_idx = i; - return 0; - } - } - return 1; -} - -static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type) -{ - if (ops == NULL) - return -EINVAL; - - switch (type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (ops->vidioc_g_fmt_vid_cap || - ops->vidioc_g_fmt_vid_cap_mplane) - return 0; - break; - case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (ops->vidioc_g_fmt_vid_cap_mplane) - return 0; - break; - case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (ops->vidioc_g_fmt_vid_overlay) - return 0; - break; - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (ops->vidioc_g_fmt_vid_out || - ops->vidioc_g_fmt_vid_out_mplane) - return 0; - break; - case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (ops->vidioc_g_fmt_vid_out_mplane) - return 0; - break; - case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (ops->vidioc_g_fmt_vid_out_overlay) - return 0; - break; - case V4L2_BUF_TYPE_VBI_CAPTURE: - if (ops->vidioc_g_fmt_vbi_cap) - return 0; - break; - case V4L2_BUF_TYPE_VBI_OUTPUT: - if (ops->vidioc_g_fmt_vbi_out) - return 0; - break; - case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (ops->vidioc_g_fmt_sliced_vbi_cap) - return 0; - break; - case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (ops->vidioc_g_fmt_sliced_vbi_out) - return 0; - break; - case V4L2_BUF_TYPE_PRIVATE: - if (ops->vidioc_g_fmt_type_private) - return 0; - break; - } - return -EINVAL; -} - -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; - - cap->version = LINUX_VERSION_CODE; - return ops->vidioc_querycap(file, fh, cap); -} - -static int v4l_s_input(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); -} - -static int v4l_s_output(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); -} - -static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct video_device *vfd; - u32 *p = arg; - - if (ops->vidioc_g_priority) - return ops->vidioc_g_priority(file, fh, arg); - vfd = video_devdata(file); - *p = v4l2_prio_max(&vfd->v4l2_dev->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; - - if (ops->vidioc_s_priority) - return ops->vidioc_s_priority(file, fh, *p); - vfd = video_devdata(file); - vfh = file->private_data; - return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p); -} - -static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_input *p = arg; - - /* - * We set the flags for CAP_PRESETS, CAP_CUSTOM_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 (ops->vidioc_s_std) - p->capabilities |= V4L2_IN_CAP_STD; - if (ops->vidioc_s_dv_preset) - p->capabilities |= V4L2_IN_CAP_PRESETS; - if (ops->vidioc_s_dv_timings) - p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS; - - 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 v4l2_output *p = arg; - - /* - * We set the flags for CAP_PRESETS, CAP_CUSTOM_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 (ops->vidioc_s_std) - p->capabilities |= V4L2_OUT_CAP_STD; - if (ops->vidioc_s_dv_preset) - p->capabilities |= V4L2_OUT_CAP_PRESETS; - if (ops->vidioc_s_dv_timings) - p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS; - - return ops->vidioc_enum_output(file, fh, p); -} - -static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_fmtdesc *p = arg; - - switch (p->type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) - break; - return ops->vidioc_enum_fmt_vid_cap(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane)) - break; - return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) - break; - return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!ops->vidioc_enum_fmt_vid_out)) - break; - return ops->vidioc_enum_fmt_vid_out(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane)) - break; - return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg); - case V4L2_BUF_TYPE_PRIVATE: - if (unlikely(!ops->vidioc_enum_fmt_type_private)) - break; - return ops->vidioc_enum_fmt_type_private(file, fh, arg); - } - return -EINVAL; -} - -static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_format *p = arg; - - switch (p->type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!ops->vidioc_g_fmt_vid_cap)) - break; - return ops->vidioc_g_fmt_vid_cap(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!ops->vidioc_g_fmt_vid_cap_mplane)) - break; - return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!ops->vidioc_g_fmt_vid_overlay)) - break; - return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!ops->vidioc_g_fmt_vid_out)) - break; - return ops->vidioc_g_fmt_vid_out(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!ops->vidioc_g_fmt_vid_out_mplane)) - break; - return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (unlikely(!ops->vidioc_g_fmt_vid_out_overlay)) - break; - return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); - case V4L2_BUF_TYPE_VBI_CAPTURE: - if (unlikely(!ops->vidioc_g_fmt_vbi_cap)) - break; - return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); - case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!ops->vidioc_g_fmt_vbi_out)) - break; - return ops->vidioc_g_fmt_vbi_out(file, fh, arg); - case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_cap)) - break; - return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); - case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_out)) - break; - return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); - case V4L2_BUF_TYPE_PRIVATE: - if (unlikely(!ops->vidioc_g_fmt_type_private)) - break; - return ops->vidioc_g_fmt_type_private(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; - - switch (p->type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!ops->vidioc_s_fmt_vid_cap)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix); - return ops->vidioc_s_fmt_vid_cap(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix_mp); - 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_VIDEO_OUTPUT: - if (unlikely(!ops->vidioc_s_fmt_vid_out)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix); - return ops->vidioc_s_fmt_vid_out(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix_mp); - 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_CAPTURE: - if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) - break; - CLEAR_AFTER_FIELD(p, fmt.vbi); - return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); - case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!ops->vidioc_s_fmt_vbi_out)) - break; - CLEAR_AFTER_FIELD(p, fmt.vbi); - return ops->vidioc_s_fmt_vbi_out(file, fh, arg); - case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) - break; - CLEAR_AFTER_FIELD(p, fmt.sliced); - return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); - case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) - break; - CLEAR_AFTER_FIELD(p, fmt.sliced); - return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); - case V4L2_BUF_TYPE_PRIVATE: - if (unlikely(!ops->vidioc_s_fmt_type_private)) - break; - return ops->vidioc_s_fmt_type_private(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; - - switch (p->type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!ops->vidioc_try_fmt_vid_cap)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix); - return ops->vidioc_try_fmt_vid_cap(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix_mp); - 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_VIDEO_OUTPUT: - if (unlikely(!ops->vidioc_try_fmt_vid_out)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix); - return ops->vidioc_try_fmt_vid_out(file, fh, arg); - case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) - break; - CLEAR_AFTER_FIELD(p, fmt.pix_mp); - 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_CAPTURE: - if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) - break; - CLEAR_AFTER_FIELD(p, fmt.vbi); - return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); - case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!ops->vidioc_try_fmt_vbi_out)) - break; - CLEAR_AFTER_FIELD(p, fmt.vbi); - return ops->vidioc_try_fmt_vbi_out(file, fh, arg); - case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) - break; - CLEAR_AFTER_FIELD(p, fmt.sliced); - return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); - case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) - break; - CLEAR_AFTER_FIELD(p, fmt.sliced); - return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); - case V4L2_BUF_TYPE_PRIVATE: - if (unlikely(!ops->vidioc_try_fmt_type_private)) - break; - return ops->vidioc_try_fmt_type_private(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; - - 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 v4l2_modulator *p = arg; - int err; - - err = ops->vidioc_g_modulator(file, fh, p); - if (!err) - p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; - return err; -} - -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; - - 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); - struct v4l2_frequency *p = arg; - enum v4l2_tuner_type type; - - type = (vfd->vfl_type == VFL_TYPE_RADIO) ? - V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; - if (p->type != type) - return -EINVAL; - return ops->vidioc_s_frequency(file, fh, p); -} - -static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct video_device *vfd = video_devdata(file); - struct v4l2_standard *p = arg; - v4l2_std_id id = vfd->tvnorms, curr_id = 0; - unsigned int index = p->index, i, j = 0; - const char *descr = ""; - - /* Return norm array in a canonical way */ - for (i = 0; i <= index && id; i++) { - /* last std value in the standards array is 0, so this - while always ends there since (id & 0) == 0. */ - while ((id & standards[j].std) != standards[j].std) - j++; - curr_id = standards[j].std; - descr = standards[j].descr; - j++; - if (curr_id == 0) - break; - if (curr_id != V4L2_STD_PAL && - curr_id != V4L2_STD_SECAM && - curr_id != V4L2_STD_NTSC) - id &= ~curr_id; - } - if (i <= index) - return -EINVAL; - - v4l2_video_std_construct(p, curr_id, descr); - return 0; -} - -static int v4l_g_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 = arg; - - /* Calls the specific handler */ - if (ops->vidioc_g_std) - return ops->vidioc_g_std(file, fh, arg); - if (vfd->current_norm) { - *id = vfd->current_norm; - return 0; - } - return -ENOTTY; -} - -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 = arg, norm; - int ret; - - norm = (*id) & vfd->tvnorms; - if (vfd->tvnorms && !norm) /* Check if std is supported */ - return -EINVAL; - - /* Calls the specific handler */ - ret = ops->vidioc_s_std(file, fh, &norm); - - /* Updates standard information */ - if (ret >= 0) - vfd->current_norm = norm; - return ret; -} - -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; - - /* - * If nothing detected, it should return all supported - * standard. - * Drivers just need to mask the std argument, in order - * to remove the standards that don't apply from the mask. - * 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; - - 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_reqbufs(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_requestbuffers *p = arg; - int ret = check_fmt(ops, p->type); - - if (ret) - return ret; - - if (p->type < V4L2_BUF_TYPE_PRIVATE) - CLEAR_AFTER_FIELD(p, memory); - - return ops->vidioc_reqbufs(file, fh, p); -} - -static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_buffer *p = arg; - int ret = check_fmt(ops, 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(ops, 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(ops, 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(ops, create->format.type); - - return ret ? ret : ops->vidioc_create_bufs(file, fh, create); -} - -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(ops, 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(ops, p->type); - - if (ret) - return ret; - if (ops->vidioc_g_parm) - return ops->vidioc_g_parm(file, fh, p); - std = vfd->current_norm; - if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) - return -EINVAL; - p->parm.capture.readbuffers = 2; - if (ops->vidioc_g_std) - 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(ops, p->type); - - return ret ? ret : ops->vidioc_s_parm(file, fh, p); -} - -static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct video_device *vfd = video_devdata(file); - struct v4l2_queryctrl *p = arg; - struct v4l2_fh *vfh = - test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; - - if (vfh && vfh->ctrl_handler) - return v4l2_queryctrl(vfh->ctrl_handler, p); - if (vfd->ctrl_handler) - return v4l2_queryctrl(vfd->ctrl_handler, p); - if (ops->vidioc_queryctrl) - return ops->vidioc_queryctrl(file, fh, p); - return -ENOTTY; -} - -static int v4l_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.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); - ctrls.count = 1; - ctrls.controls = &ctrl; - ctrl.id = p->id; - ctrl.value = p->value; - if (check_ext_ctrls(&ctrls, 1)) { - int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); - - if (ret == 0) - p->value = ctrl.value; - return ret; - } - return -EINVAL; -} - -static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct video_device *vfd = video_devdata(file); - struct v4l2_control *p = arg; - struct v4l2_fh *vfh = - test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; - struct v4l2_ext_controls ctrls; - struct v4l2_ext_control ctrl; - - if (vfh && vfh->ctrl_handler) - return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); - if (vfd->ctrl_handler) - return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); - if (ops->vidioc_s_ctrl) - return ops->vidioc_s_ctrl(file, fh, p); - if (ops->vidioc_s_ext_ctrls == NULL) - return -ENOTTY; - - ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); - ctrls.count = 1; - ctrls.controls = &ctrl; - ctrl.id = p->id; - ctrl.value = p->value; - if (check_ext_ctrls(&ctrls, 1)) - return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); - return -EINVAL; -} - -static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct video_device *vfd = video_devdata(file); - struct v4l2_ext_controls *p = arg; - struct v4l2_fh *vfh = - test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; - - p->error_idx = p->count; - if (vfh && vfh->ctrl_handler) - return v4l2_g_ext_ctrls(vfh->ctrl_handler, p); - if (vfd->ctrl_handler) - return v4l2_g_ext_ctrls(vfd->ctrl_handler, p); - if (ops->vidioc_g_ext_ctrls == NULL) - return -ENOTTY; - return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : - -EINVAL; -} - -static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct video_device *vfd = video_devdata(file); - struct v4l2_ext_controls *p = arg; - struct v4l2_fh *vfh = - test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; - - p->error_idx = p->count; - if (vfh && vfh->ctrl_handler) - return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p); - if (vfd->ctrl_handler) - return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p); - if (ops->vidioc_s_ext_ctrls == NULL) - return -ENOTTY; - return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : - -EINVAL; -} - -static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct video_device *vfd = video_devdata(file); - struct v4l2_ext_controls *p = arg; - struct v4l2_fh *vfh = - test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; - - p->error_idx = p->count; - if (vfh && vfh->ctrl_handler) - return v4l2_try_ext_ctrls(vfh->ctrl_handler, p); - if (vfd->ctrl_handler) - return v4l2_try_ext_ctrls(vfd->ctrl_handler, p); - if (ops->vidioc_try_ext_ctrls == NULL) - return -ENOTTY; - return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : - -EINVAL; -} - -static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_crop *p = arg; - struct v4l2_selection s = { - .type = p->type, - }; - int ret; - - if (ops->vidioc_g_crop) - return ops->vidioc_g_crop(file, fh, p); - /* simulate capture crop using selection api */ - - /* crop means compose for output devices */ - if (V4L2_TYPE_IS_OUTPUT(p->type)) - s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE; - else - s.target = V4L2_SEL_TGT_CROP_ACTIVE; - - ret = ops->vidioc_g_selection(file, fh, &s); - - /* copying results to old structure on success */ - if (!ret) - p->c = s.r; - return ret; -} - -static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_crop *p = arg; - struct v4l2_selection s = { - .type = p->type, - .r = p->c, - }; - - if (ops->vidioc_s_crop) - return ops->vidioc_s_crop(file, fh, p); - /* simulate capture crop using selection api */ - - /* crop means compose for output devices */ - if (V4L2_TYPE_IS_OUTPUT(p->type)) - s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE; - else - s.target = V4L2_SEL_TGT_CROP_ACTIVE; - - return ops->vidioc_s_selection(file, fh, &s); -} - -static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_cropcap *p = arg; - struct v4l2_selection s = { .type = p->type }; - int ret; - - if (ops->vidioc_cropcap) - return ops->vidioc_cropcap(file, fh, p); - - /* obtaining bounds */ - if (V4L2_TYPE_IS_OUTPUT(p->type)) - s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; - else - s.target = V4L2_SEL_TGT_CROP_BOUNDS; - - ret = ops->vidioc_g_selection(file, fh, &s); - if (ret) - return ret; - p->bounds = s.r; - - /* obtaining defrect */ - if (V4L2_TYPE_IS_OUTPUT(p->type)) - s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; - else - s.target = V4L2_SEL_TGT_CROP_DEFAULT; - - ret = ops->vidioc_g_selection(file, fh, &s); - if (ret) - return ret; - p->defrect = s.r; - - /* setting trivial pixelaspect */ - p->pixelaspect.numerator = 1; - p->pixelaspect.denominator = 1; - 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; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - return ops->vidioc_g_register(file, fh, p); -#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 - struct v4l2_dbg_register *p = arg; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - return ops->vidioc_s_register(file, fh, p); -#else - return -ENOTTY; -#endif -} - -static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *arg) -{ - struct v4l2_dbg_chip_ident *p = arg; - - p->ident = V4L2_IDENT_NONE; - p->revision = 0; - return ops->vidioc_g_chip_ident(file, fh, p); -} - -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; - - /* 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; - - 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) - return ops->vidioc_enum_freq_bands(file, fh, p); - if (ops->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 (ops->vidioc_g_modulator) { - struct v4l2_modulator m = { - .index = p->tuner, - }; - - if (type != V4L2_TUNER_RADIO) - return -EINVAL; - if (p->index) - return -EINVAL; - err = ops->vidioc_g_modulator(file, fh, &m); - if (err) - return err; - p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; - p->rangelow = m.rangelow; - p->rangehigh = m.rangehigh; - p->modulation = (type == V4L2_TUNER_RADIO) ? - V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; - return 0; - } - return -ENOTTY; -} - -struct v4l2_ioctl_info { - unsigned int ioctl; - u32 flags; - const char * const name; - union { - u32 offset; - int (*func)(const struct v4l2_ioctl_ops *ops, - struct file *file, void *fh, void *p); - } u; - void (*debug)(const void *arg, bool write_only); -}; - -/* This control needs a priority check */ -#define INFO_FL_PRIO (1 << 0) -/* This control can be valid if the filehandle passes a control handler. */ -#define INFO_FL_CTRL (1 << 1) -/* This is a standard ioctl, no need for special code */ -#define INFO_FL_STD (1 << 2) -/* This is ioctl has its own function */ -#define INFO_FL_FUNC (1 << 3) -/* Queuing ioctl */ -#define INFO_FL_QUEUE (1 << 4) -/* Zero struct from after the field to the end */ -#define INFO_FL_CLEAR(v4l2_struct, field) \ - ((offsetof(struct v4l2_struct, field) + \ - sizeof(((struct v4l2_struct *)0)->field)) << 16) -#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) - -#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \ - [_IOC_NR(_ioctl)] = { \ - .ioctl = _ioctl, \ - .flags = _flags | INFO_FL_STD, \ - .name = #_ioctl, \ - .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \ - .debug = _debug, \ - } - -#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \ - [_IOC_NR(_ioctl)] = { \ - .ioctl = _ioctl, \ - .flags = _flags | INFO_FL_FUNC, \ - .name = #_ioctl, \ - .u.func = _func, \ - .debug = _debug, \ - } - -static struct v4l2_ioctl_info v4l2_ioctls[] = { - IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), - IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)), - IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)), - IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), - IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), - IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0), - IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_OVERLAY, vidioc_overlay, v4l_print_u32, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), - IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), - IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), - IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), - IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), - IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0), - IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), - IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), - IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), - IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), - IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), - IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0), - IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), - IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), - IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0), - IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0), - IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), - IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0), - IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), - IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), - IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), - IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), - IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0), - IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0), - IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), - IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), - IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), - IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), - IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), - IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), - IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)), - IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), - IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), - IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), - IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), - IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), - IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), - IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0), - IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), - IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), - IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0), - IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), - IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), - IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 0), - IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_ENUM_DV_PRESETS, vidioc_enum_dv_presets, v4l_print_dv_enum_presets, 0), - IOCTL_INFO_STD(VIDIOC_S_DV_PRESET, vidioc_s_dv_preset, v4l_print_dv_preset, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_G_DV_PRESET, vidioc_g_dv_preset, v4l_print_dv_preset, 0), - IOCTL_INFO_STD(VIDIOC_QUERY_DV_PRESET, vidioc_query_dv_preset, v4l_print_dv_preset, 0), - IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO), - IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0), - IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), - IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), - IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), - IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), - IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), - IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0), - IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0), - IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)), - IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), -}; -#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) - -bool v4l2_is_known_ioctl(unsigned int cmd) -{ - if (_IOC_NR(cmd) >= V4L2_IOCTLS) - return false; - return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; -} - -struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd) -{ - if (_IOC_NR(cmd) >= V4L2_IOCTLS) - return vdev->lock; - if (test_bit(_IOC_NR(cmd), vdev->disable_locking)) - return NULL; - if (vdev->queue && vdev->queue->lock && - (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) - return vdev->queue->lock; - return vdev->lock; -} - -/* Common ioctl debug function. This function can be used by - external ioctl messages as well as internal V4L ioctl */ -void v4l_printk_ioctl(const char *prefix, unsigned int cmd) -{ - const char *dir, *type; - - if (prefix) - printk(KERN_DEBUG "%s: ", prefix); - - switch (_IOC_TYPE(cmd)) { - case 'd': - type = "v4l2_int"; - break; - case 'V': - if (_IOC_NR(cmd) >= V4L2_IOCTLS) { - type = "v4l2"; - break; - } - pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); - return; - default: - type = "unknown"; - break; - } - - switch (_IOC_DIR(cmd)) { - case _IOC_NONE: dir = "--"; break; - case _IOC_READ: dir = "r-"; break; - case _IOC_WRITE: dir = "-w"; break; - case _IOC_READ | _IOC_WRITE: dir = "rw"; break; - default: dir = "*ERR*"; break; - } - pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", - type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); -} -EXPORT_SYMBOL(v4l_printk_ioctl); - -static long __video_do_ioctl(struct file *file, - unsigned int cmd, void *arg) -{ - struct video_device *vfd = video_devdata(file); - const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; - bool write_only = false; - struct v4l2_ioctl_info default_info; - const struct v4l2_ioctl_info *info; - void *fh = file->private_data; - struct v4l2_fh *vfh = NULL; - int use_fh_prio = 0; - int debug = vfd->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; - use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); - } - - 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 (use_fh_prio && (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 (write_only && debug > V4L2_DEBUG_IOCTL) { - v4l_printk_ioctl(video_device_node_name(vfd), cmd); - pr_cont(": "); - info->debug(arg, write_only); - } - if (info->flags & INFO_FL_STD) { - typedef int (*vidioc_op)(struct file *file, void *fh, void *p); - const void *p = vfd->ioctl_ops; - const vidioc_op *vidioc = p + info->u.offset; - - ret = (*vidioc)(file, fh, arg); - } else if (info->flags & INFO_FL_FUNC) { - ret = info->u.func(ops, file, fh, arg); - } else if (!ops->vidioc_default) { - ret = -ENOTTY; - } else { - ret = ops->vidioc_default(file, fh, - use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, - cmd, arg); - } - -done: - if (debug) { - if (write_only && debug > V4L2_DEBUG_IOCTL) { - if (ret < 0) - printk(KERN_DEBUG "%s: error %ld\n", - video_device_node_name(vfd), ret); - return ret; - } - v4l_printk_ioctl(video_device_node_name(vfd), cmd); - if (ret < 0) - pr_cont(": error %ld\n", ret); - else if (debug == V4L2_DEBUG_IOCTL) - pr_cont("\n"); - else if (_IOC_DIR(cmd) == _IOC_NONE) - info->debug(arg, write_only); - else { - pr_cont(": "); - info->debug(arg, write_only); - } - } - - return ret; -} - -static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, - void * __user *user_ptr, void ***kernel_ptr) -{ - int ret = 0; - - switch (cmd) { - case VIDIOC_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_S_EXT_CTRLS: - case VIDIOC_G_EXT_CTRLS: - case VIDIOC_TRY_EXT_CTRLS: { - struct v4l2_ext_controls *ctrls = parg; - - if (ctrls->count != 0) { - if (ctrls->count > V4L2_CID_MAX_CTRLS) { - ret = -EINVAL; - break; - } - *user_ptr = (void __user *)ctrls->controls; - *kernel_ptr = (void *)&ctrls->controls; - *array_size = sizeof(struct v4l2_ext_control) - * ctrls->count; - ret = 1; - } - break; - } - } - - return ret; -} - -long -video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, - v4l2_kioctl func) -{ - char sbuf[128]; - void *mbuf = NULL; - void *parg = (void *)arg; - long err = -EINVAL; - bool has_array_args; - size_t array_size = 0; - void __user *user_ptr = NULL; - void **kernel_ptr = NULL; - - /* Copy arguments into temp kernel buffer */ - if (_IOC_DIR(cmd) != _IOC_NONE) { - if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { - parg = sbuf; - } else { - /* too big to allocate from stack */ - mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); - if (NULL == mbuf) - return -ENOMEM; - parg = mbuf; - } - - err = -EFAULT; - if (_IOC_DIR(cmd) & _IOC_WRITE) { - unsigned int n = _IOC_SIZE(cmd); - - /* - * In some cases, only a few fields are used as input, - * i.e. when the app sets "index" and then the driver - * fills in the rest of the structure for the thing - * with that index. We only need to copy up the first - * non-input field. - */ - if (v4l2_is_known_ioctl(cmd)) { - u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; - if (flags & INFO_FL_CLEAR_MASK) - n = (flags & INFO_FL_CLEAR_MASK) >> 16; - } - - if (copy_from_user(parg, (void __user *)arg, n)) - goto out; - - /* zero out anything we don't copy from userspace */ - if (n < _IOC_SIZE(cmd)) - memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); - } else { - /* read-only ioctl */ - memset(parg, 0, _IOC_SIZE(cmd)); - } - } - - err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); - if (err < 0) - goto out; - has_array_args = err; - - if (has_array_args) { - /* - * When adding new types of array args, make sure that the - * parent argument to ioctl (which contains the pointer to the - * array) fits into sbuf (so that mbuf will still remain - * unused up to here). - */ - mbuf = kmalloc(array_size, GFP_KERNEL); - err = -ENOMEM; - if (NULL == mbuf) - goto out_array_args; - err = -EFAULT; - if (copy_from_user(mbuf, user_ptr, array_size)) - goto out_array_args; - *kernel_ptr = mbuf; - } - - /* Handles IOCTL */ - err = func(file, cmd, parg); - if (err == -ENOIOCTLCMD) - err = -ENOTTY; - - if (has_array_args) { - *kernel_ptr = user_ptr; - if (copy_to_user(user_ptr, mbuf, array_size)) - err = -EFAULT; - goto out_array_args; - } - /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid - results that must be returned. */ - if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS) - goto out; - -out_array_args: - /* Copy results into user buffer */ - switch (_IOC_DIR(cmd)) { - case _IOC_READ: - case (_IOC_WRITE | _IOC_READ): - if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) - err = -EFAULT; - break; - } - -out: - kfree(mbuf); - return err; -} -EXPORT_SYMBOL(video_usercopy); - -long video_ioctl2(struct file *file, - unsigned int cmd, unsigned long arg) -{ - return video_usercopy(file, cmd, arg, __video_do_ioctl); -} -EXPORT_SYMBOL(video_ioctl2); |
