| /* |
| * 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/types.h> |
| #include <linux/kernel.h> |
| |
| #define __OLD_VIDIOC_ /* To allow fixing old calls */ |
| #include <linux/videodev.h> |
| #include <linux/videodev2.h> |
| |
| #ifdef CONFIG_VIDEO_V4L1 |
| #include <linux/videodev.h> |
| #endif |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/v4l2-chip-ident.h> |
| |
| #define dbgarg(cmd, fmt, arg...) \ |
| do { \ |
| if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { \ |
| printk(KERN_DEBUG "%s: ", vfd->name); \ |
| v4l_printk_ioctl(cmd); \ |
| printk(" " fmt, ## arg); \ |
| } \ |
| } while (0) |
| |
| #define dbgarg2(fmt, arg...) \ |
| do { \ |
| if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \ |
| printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);\ |
| } while (0) |
| |
| 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", |
| }; |
| 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 */ |
| |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| static const char *v4l1_ioctls[] = { |
| [_IOC_NR(VIDIOCGCAP)] = "VIDIOCGCAP", |
| [_IOC_NR(VIDIOCGCHAN)] = "VIDIOCGCHAN", |
| [_IOC_NR(VIDIOCSCHAN)] = "VIDIOCSCHAN", |
| [_IOC_NR(VIDIOCGTUNER)] = "VIDIOCGTUNER", |
| [_IOC_NR(VIDIOCSTUNER)] = "VIDIOCSTUNER", |
| [_IOC_NR(VIDIOCGPICT)] = "VIDIOCGPICT", |
| [_IOC_NR(VIDIOCSPICT)] = "VIDIOCSPICT", |
| [_IOC_NR(VIDIOCCAPTURE)] = "VIDIOCCAPTURE", |
| [_IOC_NR(VIDIOCGWIN)] = "VIDIOCGWIN", |
| [_IOC_NR(VIDIOCSWIN)] = "VIDIOCSWIN", |
| [_IOC_NR(VIDIOCGFBUF)] = "VIDIOCGFBUF", |
| [_IOC_NR(VIDIOCSFBUF)] = "VIDIOCSFBUF", |
| [_IOC_NR(VIDIOCKEY)] = "VIDIOCKEY", |
| [_IOC_NR(VIDIOCGFREQ)] = "VIDIOCGFREQ", |
| [_IOC_NR(VIDIOCSFREQ)] = "VIDIOCSFREQ", |
| [_IOC_NR(VIDIOCGAUDIO)] = "VIDIOCGAUDIO", |
| [_IOC_NR(VIDIOCSAUDIO)] = "VIDIOCSAUDIO", |
| [_IOC_NR(VIDIOCSYNC)] = "VIDIOCSYNC", |
| [_IOC_NR(VIDIOCMCAPTURE)] = "VIDIOCMCAPTURE", |
| [_IOC_NR(VIDIOCGMBUF)] = "VIDIOCGMBUF", |
| [_IOC_NR(VIDIOCGUNIT)] = "VIDIOCGUNIT", |
| [_IOC_NR(VIDIOCGCAPTURE)] = "VIDIOCGCAPTURE", |
| [_IOC_NR(VIDIOCSCAPTURE)] = "VIDIOCSCAPTURE", |
| [_IOC_NR(VIDIOCSPLAYMODE)] = "VIDIOCSPLAYMODE", |
| [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE", |
| [_IOC_NR(VIDIOCGPLAYINFO)] = "VIDIOCGPLAYINFO", |
| [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE", |
| [_IOC_NR(VIDIOCGVBIFMT)] = "VIDIOCGVBIFMT", |
| [_IOC_NR(VIDIOCSVBIFMT)] = "VIDIOCSVBIFMT" |
| }; |
| #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls) |
| #endif |
| |
| static const char *v4l2_ioctls[] = { |
| [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP", |
| [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED", |
| [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT", |
| [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT", |
| [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT", |
| [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS", |
| [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF", |
| [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF", |
| [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF", |
| [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY", |
| [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF", |
| [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF", |
| [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON", |
| [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF", |
| [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM", |
| [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM", |
| [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD", |
| [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD", |
| [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD", |
| [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT", |
| [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL", |
| [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL", |
| [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER", |
| [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER", |
| [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO", |
| [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO", |
| [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL", |
| [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU", |
| [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT", |
| [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT", |
| [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT", |
| [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT", |
| [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT", |
| [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT", |
| [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT", |
| [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR", |
| [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR", |
| [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY", |
| [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY", |
| [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP", |
| [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP", |
| [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP", |
| [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP", |
| [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP", |
| [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD", |
| [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT", |
| [_IOC_NR(VIDIOC_ENUMAUDIO)] = "VIDIOC_ENUMAUDIO", |
| [_IOC_NR(VIDIOC_ENUMAUDOUT)] = "VIDIOC_ENUMAUDOUT", |
| [_IOC_NR(VIDIOC_G_PRIORITY)] = "VIDIOC_G_PRIORITY", |
| [_IOC_NR(VIDIOC_S_PRIORITY)] = "VIDIOC_S_PRIORITY", |
| [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP", |
| [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS", |
| [_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS", |
| [_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS", |
| [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS", |
| #if 1 |
| [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)] = "VIDIOC_ENUM_FRAMESIZES", |
| [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS", |
| [_IOC_NR(VIDIOC_G_ENC_INDEX)] = "VIDIOC_G_ENC_INDEX", |
| [_IOC_NR(VIDIOC_ENCODER_CMD)] = "VIDIOC_ENCODER_CMD", |
| [_IOC_NR(VIDIOC_TRY_ENCODER_CMD)] = "VIDIOC_TRY_ENCODER_CMD", |
| |
| [_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER", |
| [_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER", |
| |
| [_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT", |
| [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK", |
| #endif |
| }; |
| #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) |
| |
| /* Common ioctl debug function. This function can be used by |
| external ioctl messages as well as internal V4L ioctl */ |
| void v4l_printk_ioctl(unsigned int cmd) |
| { |
| char *dir, *type; |
| |
| switch (_IOC_TYPE(cmd)) { |
| case 'd': |
| type = "v4l2_int"; |
| break; |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| case 'v': |
| if (_IOC_NR(cmd) >= V4L1_IOCTLS) { |
| type = "v4l1"; |
| break; |
| } |
| printk("%s", v4l1_ioctls[_IOC_NR(cmd)]); |
| return; |
| #endif |
| case 'V': |
| if (_IOC_NR(cmd) >= V4L2_IOCTLS) { |
| type = "v4l2"; |
| break; |
| } |
| printk("%s", v4l2_ioctls[_IOC_NR(cmd)]); |
| return; |
| default: |
| type = "unknown"; |
| } |
| |
| 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; |
| } |
| printk("%s ioctl '%c', dir=%s, #%d (0x%08x)", |
| type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); |
| } |
| EXPORT_SYMBOL(v4l_printk_ioctl); |
| |
| /* |
| * helper function -- handles userspace copying for ioctl arguments |
| */ |
| |
| #ifdef __OLD_VIDIOC_ |
| static unsigned int |
| video_fix_command(unsigned int cmd) |
| { |
| switch (cmd) { |
| case VIDIOC_OVERLAY_OLD: |
| cmd = VIDIOC_OVERLAY; |
| break; |
| case VIDIOC_S_PARM_OLD: |
| cmd = VIDIOC_S_PARM; |
| break; |
| case VIDIOC_S_CTRL_OLD: |
| cmd = VIDIOC_S_CTRL; |
| break; |
| case VIDIOC_G_AUDIO_OLD: |
| cmd = VIDIOC_G_AUDIO; |
| break; |
| case VIDIOC_G_AUDOUT_OLD: |
| cmd = VIDIOC_G_AUDOUT; |
| break; |
| case VIDIOC_CROPCAP_OLD: |
| cmd = VIDIOC_CROPCAP; |
| break; |
| } |
| return cmd; |
| } |
| #endif |
| |
| /* |
| * Obsolete usercopy function - Should be removed soon |
| */ |
| long |
| video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, |
| v4l2_kioctl func) |
| { |
| char sbuf[128]; |
| void *mbuf = NULL; |
| void *parg = NULL; |
| long err = -EINVAL; |
| int is_ext_ctrl; |
| size_t ctrls_size = 0; |
| void __user *user_ptr = NULL; |
| |
| #ifdef __OLD_VIDIOC_ |
| cmd = video_fix_command(cmd); |
| #endif |
| is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || |
| cmd == VIDIOC_TRY_EXT_CTRLS); |
| |
| /* Copy arguments into temp kernel buffer */ |
| switch (_IOC_DIR(cmd)) { |
| case _IOC_NONE: |
| parg = NULL; |
| break; |
| case _IOC_READ: |
| case _IOC_WRITE: |
| case (_IOC_WRITE | _IOC_READ): |
| 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) |
| if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) |
| goto out; |
| break; |
| } |
| if (is_ext_ctrl) { |
| struct v4l2_ext_controls *p = parg; |
| |
| /* In case of an error, tell the caller that it wasn't |
| a specific control that caused it. */ |
| p->error_idx = p->count; |
| user_ptr = (void __user *)p->controls; |
| if (p->count) { |
| ctrls_size = sizeof(struct v4l2_ext_control) * p->count; |
| /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ |
| mbuf = kmalloc(ctrls_size, GFP_KERNEL); |
| err = -ENOMEM; |
| if (NULL == mbuf) |
| goto out_ext_ctrl; |
| err = -EFAULT; |
| if (copy_from_user(mbuf, user_ptr, ctrls_size)) |
| goto out_ext_ctrl; |
| p->controls = mbuf; |
| } |
| } |
| |
| /* call driver */ |
| err = func(file, cmd, parg); |
| if (err == -ENOIOCTLCMD) |
| err = -EINVAL; |
| if (is_ext_ctrl) { |
| struct v4l2_ext_controls *p = parg; |
| |
| p->controls = (void *)user_ptr; |
| if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) |
| err = -EFAULT; |
| goto out_ext_ctrl; |
| } |
| if (err < 0) |
| goto out; |
| |
| out_ext_ctrl: |
| /* 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); |
| |
| static void dbgbuf(unsigned int cmd, struct video_device *vfd, |
| struct v4l2_buffer *p) |
| { |
| struct v4l2_timecode *tc = &p->timecode; |
| |
| dbgarg(cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, " |
| "bytesused=%d, flags=0x%08d, " |
| "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n", |
| 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->bytesused, p->flags, |
| p->field, p->sequence, |
| prt_names(p->memory, v4l2_memory_names), |
| p->m.userptr, p->length); |
| dbgarg2("timecode=%02d:%02d:%02d type=%d, " |
| "flags=0x%08d, frames=%d, userbits=0x%08x\n", |
| tc->hours, tc->minutes, tc->seconds, |
| tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); |
| } |
| |
| static inline void dbgrect(struct video_device *vfd, char *s, |
| struct v4l2_rect *r) |
| { |
| dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top, |
| r->width, r->height); |
| }; |
| |
| static inline void v4l_print_pix_fmt(struct video_device *vfd, |
| struct v4l2_pix_format *fmt) |
| { |
| dbgarg2("width=%d, height=%d, format=%c%c%c%c, field=%s, " |
| "bytesperline=%d sizeimage=%d, colorspace=%d\n", |
| fmt->width, fmt->height, |
| (fmt->pixelformat & 0xff), |
| (fmt->pixelformat >> 8) & 0xff, |
| (fmt->pixelformat >> 16) & 0xff, |
| (fmt->pixelformat >> 24) & 0xff, |
| prt_names(fmt->field, v4l2_field_names), |
| fmt->bytesperline, fmt->sizeimage, fmt->colorspace); |
| }; |
| |
| static inline void v4l_print_ext_ctrls(unsigned int cmd, |
| struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals) |
| { |
| __u32 i; |
| |
| if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) |
| return; |
| dbgarg(cmd, ""); |
| printk(KERN_CONT "class=0x%x", c->ctrl_class); |
| for (i = 0; i < c->count; i++) { |
| if (show_vals) |
| printk(KERN_CONT " id/val=0x%x/0x%x", |
| c->controls[i].id, c->controls[i].value); |
| else |
| printk(KERN_CONT " id=0x%x", c->controls[i].id); |
| } |
| printk(KERN_CONT "\n"); |
| }; |
| |
| static inline 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; |
| c->controls[i].reserved2[1] = 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_try_fmt_vid_cap) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (ops->vidioc_try_fmt_vid_overlay) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (ops->vidioc_try_fmt_vid_out) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| if (ops->vidioc_try_fmt_vid_out_overlay) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_VBI_CAPTURE: |
| if (ops->vidioc_try_fmt_vbi_cap) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_VBI_OUTPUT: |
| if (ops->vidioc_try_fmt_vbi_out) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| if (ops->vidioc_try_fmt_sliced_vbi_cap) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| if (ops->vidioc_try_fmt_sliced_vbi_out) |
| return 0; |
| break; |
| case V4L2_BUF_TYPE_PRIVATE: |
| if (ops->vidioc_try_fmt_type_private) |
| return 0; |
| break; |
| } |
| return -EINVAL; |
| } |
| |
| 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; |
| void *fh = file->private_data; |
| long ret = -EINVAL; |
| |
| if ((vfd->debug & V4L2_DEBUG_IOCTL) && |
| !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) { |
| v4l_print_ioctl(vfd->name, cmd); |
| printk(KERN_CONT "\n"); |
| } |
| |
| if (ops == NULL) { |
| printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n", |
| vfd->name); |
| return -EINVAL; |
| } |
| |
| #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| /*********************************************************** |
| Handles calls to the obsoleted V4L1 API |
| Due to the nature of VIDIOCGMBUF, each driver that supports |
| V4L1 should implement its own handler for this ioctl. |
| ***********************************************************/ |
| |
| /* --- streaming capture ------------------------------------- */ |
| if (cmd == VIDIOCGMBUF) { |
| struct video_mbuf *p = arg; |
| |
| if (!ops->vidiocgmbuf) |
| return ret; |
| ret = ops->vidiocgmbuf(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "size=%d, frames=%d, offsets=0x%08lx\n", |
| p->size, p->frames, |
| (unsigned long)p->offsets); |
| return ret; |
| } |
| |
| /******************************************************** |
| All other V4L1 calls are handled by v4l1_compat module. |
| Those calls will be translated into V4L2 calls, and |
| __video_do_ioctl will be called again, with one or more |
| V4L2 ioctls. |
| ********************************************************/ |
| if (_IOC_TYPE(cmd) == 'v' && _IOC_NR(cmd) < BASE_VIDIOCPRIVATE) |
| return v4l_compat_translate_ioctl(file, cmd, arg, |
| __video_do_ioctl); |
| #endif |
| |
| switch (cmd) { |
| /* --- capabilities ------------------------------------------ */ |
| case VIDIOC_QUERYCAP: |
| { |
| struct v4l2_capability *cap = (struct v4l2_capability *)arg; |
| |
| if (!ops->vidioc_querycap) |
| break; |
| |
| ret = ops->vidioc_querycap(file, fh, cap); |
| if (!ret) |
| dbgarg(cmd, "driver=%s, card=%s, bus=%s, " |
| "version=0x%08x, " |
| "capabilities=0x%08x\n", |
| cap->driver, cap->card, cap->bus_info, |
| cap->version, |
| cap->capabilities); |
| break; |
| } |
| |
| /* --- priority ------------------------------------------ */ |
| case VIDIOC_G_PRIORITY: |
| { |
| enum v4l2_priority *p = arg; |
| |
| if (!ops->vidioc_g_priority) |
| break; |
| ret = ops->vidioc_g_priority(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "priority is %d\n", *p); |
| break; |
| } |
| case VIDIOC_S_PRIORITY: |
| { |
| enum v4l2_priority *p = arg; |
| |
| if (!ops->vidioc_s_priority) |
| break; |
| dbgarg(cmd, "setting priority to %d\n", *p); |
| ret = ops->vidioc_s_priority(file, fh, *p); |
| break; |
| } |
| |
| /* --- capture ioctls ---------------------------------------- */ |
| case VIDIOC_ENUM_FMT: |
| { |
| struct v4l2_fmtdesc *f = arg; |
| |
| switch (f->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| if (ops->vidioc_enum_fmt_vid_cap) |
| ret = ops->vidioc_enum_fmt_vid_cap(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (ops->vidioc_enum_fmt_vid_overlay) |
| ret = ops->vidioc_enum_fmt_vid_overlay(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (ops->vidioc_enum_fmt_vid_out) |
| ret = ops->vidioc_enum_fmt_vid_out(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_PRIVATE: |
| if (ops->vidioc_enum_fmt_type_private) |
| ret = ops->vidioc_enum_fmt_type_private(file, |
| fh, f); |
| break; |
| default: |
| break; |
| } |
| if (!ret) |
| dbgarg(cmd, "index=%d, type=%d, flags=%d, " |
| "pixelformat=%c%c%c%c, description='%s'\n", |
| f->index, f->type, f->flags, |
| (f->pixelformat & 0xff), |
| (f->pixelformat >> 8) & 0xff, |
| (f->pixelformat >> 16) & 0xff, |
| (f->pixelformat >> 24) & 0xff, |
| f->description); |
| break; |
| } |
| case VIDIOC_G_FMT: |
| { |
| struct v4l2_format *f = (struct v4l2_format *)arg; |
| |
| /* FIXME: Should be one dump per type */ |
| dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); |
| |
| switch (f->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| if (ops->vidioc_g_fmt_vid_cap) |
| ret = ops->vidioc_g_fmt_vid_cap(file, fh, f); |
| if (!ret) |
| v4l_print_pix_fmt(vfd, &f->fmt.pix); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (ops->vidioc_g_fmt_vid_overlay) |
| ret = ops->vidioc_g_fmt_vid_overlay(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (ops->vidioc_g_fmt_vid_out) |
| ret = ops->vidioc_g_fmt_vid_out(file, fh, f); |
| if (!ret) |
| v4l_print_pix_fmt(vfd, &f->fmt.pix); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| if (ops->vidioc_g_fmt_vid_out_overlay) |
| ret = ops->vidioc_g_fmt_vid_out_overlay(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_VBI_CAPTURE: |
| if (ops->vidioc_g_fmt_vbi_cap) |
| ret = ops->vidioc_g_fmt_vbi_cap(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_VBI_OUTPUT: |
| if (ops->vidioc_g_fmt_vbi_out) |
| ret = ops->vidioc_g_fmt_vbi_out(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| if (ops->vidioc_g_fmt_sliced_vbi_cap) |
| ret = ops->vidioc_g_fmt_sliced_vbi_cap(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| if (ops->vidioc_g_fmt_sliced_vbi_out) |
| ret = ops->vidioc_g_fmt_sliced_vbi_out(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_PRIVATE: |
| if (ops->vidioc_g_fmt_type_private) |
| ret = ops->vidioc_g_fmt_type_private(file, |
| fh, f); |
| break; |
| } |
| |
| break; |
| } |
| case VIDIOC_S_FMT: |
| { |
| struct v4l2_format *f = (struct v4l2_format *)arg; |
| |
| /* FIXME: Should be one dump per type */ |
| dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); |
| |
| switch (f->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| v4l_print_pix_fmt(vfd, &f->fmt.pix); |
| if (ops->vidioc_s_fmt_vid_cap) |
| ret = ops->vidioc_s_fmt_vid_cap(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (ops->vidioc_s_fmt_vid_overlay) |
| ret = ops->vidioc_s_fmt_vid_overlay(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| v4l_print_pix_fmt(vfd, &f->fmt.pix); |
| if (ops->vidioc_s_fmt_vid_out) |
| ret = ops->vidioc_s_fmt_vid_out(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| if (ops->vidioc_s_fmt_vid_out_overlay) |
| ret = ops->vidioc_s_fmt_vid_out_overlay(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_VBI_CAPTURE: |
| if (ops->vidioc_s_fmt_vbi_cap) |
| ret = ops->vidioc_s_fmt_vbi_cap(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_VBI_OUTPUT: |
| if (ops->vidioc_s_fmt_vbi_out) |
| ret = ops->vidioc_s_fmt_vbi_out(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| if (ops->vidioc_s_fmt_sliced_vbi_cap) |
| ret = ops->vidioc_s_fmt_sliced_vbi_cap(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| if (ops->vidioc_s_fmt_sliced_vbi_out) |
| ret = ops->vidioc_s_fmt_sliced_vbi_out(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_PRIVATE: |
| if (ops->vidioc_s_fmt_type_private) |
| ret = ops->vidioc_s_fmt_type_private(file, |
| fh, f); |
| break; |
| } |
| break; |
| } |
| case VIDIOC_TRY_FMT: |
| { |
| struct v4l2_format *f = (struct v4l2_format *)arg; |
| |
| /* FIXME: Should be one dump per type */ |
| dbgarg(cmd, "type=%s\n", prt_names(f->type, |
| v4l2_type_names)); |
| switch (f->type) { |
| case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| if (ops->vidioc_try_fmt_vid_cap) |
| ret = ops->vidioc_try_fmt_vid_cap(file, fh, f); |
| if (!ret) |
| v4l_print_pix_fmt(vfd, &f->fmt.pix); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| if (ops->vidioc_try_fmt_vid_overlay) |
| ret = ops->vidioc_try_fmt_vid_overlay(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
| if (ops->vidioc_try_fmt_vid_out) |
| ret = ops->vidioc_try_fmt_vid_out(file, fh, f); |
| if (!ret) |
| v4l_print_pix_fmt(vfd, &f->fmt.pix); |
| break; |
| case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: |
| if (ops->vidioc_try_fmt_vid_out_overlay) |
| ret = ops->vidioc_try_fmt_vid_out_overlay(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_VBI_CAPTURE: |
| if (ops->vidioc_try_fmt_vbi_cap) |
| ret = ops->vidioc_try_fmt_vbi_cap(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_VBI_OUTPUT: |
| if (ops->vidioc_try_fmt_vbi_out) |
| ret = ops->vidioc_try_fmt_vbi_out(file, fh, f); |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: |
| if (ops->vidioc_try_fmt_sliced_vbi_cap) |
| ret = ops->vidioc_try_fmt_sliced_vbi_cap(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: |
| if (ops->vidioc_try_fmt_sliced_vbi_out) |
| ret = ops->vidioc_try_fmt_sliced_vbi_out(file, |
| fh, f); |
| break; |
| case V4L2_BUF_TYPE_PRIVATE: |
| if (ops->vidioc_try_fmt_type_private) |
| ret = ops->vidioc_try_fmt_type_private(file, |
| fh, f); |
| break; |
| } |
| |
| break; |
| } |
| /* FIXME: Those buf reqs could be handled here, |
| with some changes on videobuf to allow its header to be included at |
| videodev2.h or being merged at videodev2. |
| */ |
| case VIDIOC_REQBUFS: |
| { |
| struct v4l2_requestbuffers *p = arg; |
| |
| if (!ops->vidioc_reqbufs) |
| break; |
| ret = check_fmt(ops, p->type); |
| if (ret) |
| break; |
| |
| ret = ops->vidioc_reqbufs(file, fh, p); |
| dbgarg(cmd, "count=%d, type=%s, memory=%s\n", |
| p->count, |
| prt_names(p->type, v4l2_type_names), |
| prt_names(p->memory, v4l2_memory_names)); |
| break; |
| } |
| case VIDIOC_QUERYBUF: |
| { |
| struct v4l2_buffer *p = arg; |
| |
| if (!ops->vidioc_querybuf) |
| break; |
| ret = check_fmt(ops, p->type); |
| if (ret) |
| break; |
| |
| ret = ops->vidioc_querybuf(file, fh, p); |
| if (!ret) |
| dbgbuf(cmd, vfd, p); |
| break; |
| } |
| case VIDIOC_QBUF: |
| { |
| struct v4l2_buffer *p = arg; |
| |
| if (!ops->vidioc_qbuf) |
| break; |
| ret = check_fmt(ops, p->type); |
| if (ret) |
| break; |
| |
| ret = ops->vidioc_qbuf(file, fh, p); |
| if (!ret) |
| dbgbuf(cmd, vfd, p); |
| break; |
| } |
| case VIDIOC_DQBUF: |
| { |
| struct v4l2_buffer *p = arg; |
| |
| if (!ops->vidioc_dqbuf) |
| break; |
| ret = check_fmt(ops, p->type); |
| if (ret) |
| break; |
| |
| ret = ops->vidioc_dqbuf(file, fh, p); |
| if (!ret) |
| dbgbuf(cmd, vfd, p); |
| break; |
| } |
| case VIDIOC_OVERLAY: |
| { |
| int *i = arg; |
| |
| if (!ops->vidioc_overlay) |
| break; |
| dbgarg(cmd, "value=%d\n", *i); |
| ret = ops->vidioc_overlay(file, fh, *i); |
| break; |
| } |
| case VIDIOC_G_FBUF: |
| { |
| struct v4l2_framebuffer *p = arg; |
| |
| if (!ops->vidioc_g_fbuf) |
| break; |
| ret = ops->vidioc_g_fbuf(file, fh, arg); |
| if (!ret) { |
| dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", |
| p->capability, p->flags, |
| (unsigned long)p->base); |
| v4l_print_pix_fmt(vfd, &p->fmt); |
| } |
| break; |
| } |
| case VIDIOC_S_FBUF: |
| { |
| struct v4l2_framebuffer *p = arg; |
| |
| if (!ops->vidioc_s_fbuf) |
| break; |
| dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", |
| p->capability, p->flags, (unsigned long)p->base); |
| v4l_print_pix_fmt(vfd, &p->fmt); |
| ret = ops->vidioc_s_fbuf(file, fh, arg); |
| break; |
| } |
| case VIDIOC_STREAMON: |
| { |
| enum v4l2_buf_type i = *(int *)arg; |
| |
| if (!ops->vidioc_streamon) |
| break; |
| dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); |
| ret = ops->vidioc_streamon(file, fh, i); |
| break; |
| } |
| case VIDIOC_STREAMOFF: |
| { |
| enum v4l2_buf_type i = *(int *)arg; |
| |
| if (!ops->vidioc_streamoff) |
| break; |
| dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); |
| ret = ops->vidioc_streamoff(file, fh, i); |
| break; |
| } |
| /* ---------- tv norms ---------- */ |
| case VIDIOC_ENUMSTD: |
| { |
| 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); |
| |
| dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, " |
| "framelines=%d\n", p->index, |
| (unsigned long long)p->id, p->name, |
| p->frameperiod.numerator, |
| p->frameperiod.denominator, |
| p->framelines); |
| |
| ret = 0; |
| break; |
| } |
| case VIDIOC_G_STD: |
| { |
| v4l2_std_id *id = arg; |
| |
| ret = 0; |
| /* Calls the specific handler */ |
| if (ops->vidioc_g_std) |
| ret = ops->vidioc_g_std(file, fh, id); |
| else |
| *id = vfd->current_norm; |
| |
| if (!ret) |
| dbgarg(cmd, "std=0x%08Lx\n", (long long unsigned)*id); |
| break; |
| } |
| case VIDIOC_S_STD: |
| { |
| v4l2_std_id *id = arg, norm; |
| |
| dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id); |
| |
| norm = (*id) & vfd->tvnorms; |
| if (vfd->tvnorms && !norm) /* Check if std is supported */ |
| break; |
| |
| /* Calls the specific handler */ |
| if (ops->vidioc_s_std) |
| ret = ops->vidioc_s_std(file, fh, &norm); |
| else |
| ret = -EINVAL; |
| |
| /* Updates standard information */ |
| if (ret >= 0) |
| vfd->current_norm = norm; |
| break; |
| } |
| case VIDIOC_QUERYSTD: |
| { |
| v4l2_std_id *p = arg; |
| |
| if (!ops->vidioc_querystd) |
| break; |
| ret = ops->vidioc_querystd(file, fh, arg); |
| if (!ret) |
| dbgarg(cmd, "detected std=%08Lx\n", |
| (unsigned long long)*p); |
| break; |
| } |
| /* ------ input switching ---------- */ |
| /* FIXME: Inputs can be handled inside videodev2 */ |
| case VIDIOC_ENUMINPUT: |
| { |
| struct v4l2_input *p = arg; |
| |
| if (!ops->vidioc_enum_input) |
| break; |
| |
| ret = ops->vidioc_enum_input(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "index=%d, name=%s, type=%d, " |
| "audioset=%d, " |
| "tuner=%d, std=%08Lx, status=%d\n", |
| p->index, p->name, p->type, p->audioset, |
| p->tuner, |
| (unsigned long long)p->std, |
| p->status); |
| break; |
| } |
| case VIDIOC_G_INPUT: |
| { |
| unsigned int *i = arg; |
| |
| if (!ops->vidioc_g_input) |
| break; |
| ret = ops->vidioc_g_input(file, fh, i); |
| if (!ret) |
| dbgarg(cmd, "value=%d\n", *i); |
| break; |
| } |
| case VIDIOC_S_INPUT: |
| { |
| unsigned int *i = arg; |
| |
| if (!ops->vidioc_s_input) |
| break; |
| dbgarg(cmd, "value=%d\n", *i); |
| ret = ops->vidioc_s_input(file, fh, *i); |
| break; |
| } |
| |
| /* ------ output switching ---------- */ |
| case VIDIOC_ENUMOUTPUT: |
| { |
| struct v4l2_output *p = arg; |
| |
| if (!ops->vidioc_enum_output) |
| break; |
| |
| ret = ops->vidioc_enum_output(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "index=%d, name=%s, type=%d, " |
| "audioset=0x%x, " |
| "modulator=%d, std=0x%08Lx\n", |
| p->index, p->name, p->type, p->audioset, |
| p->modulator, (unsigned long long)p->std); |
| break; |
| } |
| case VIDIOC_G_OUTPUT: |
| { |
| unsigned int *i = arg; |
| |
| if (!ops->vidioc_g_output) |
| break; |
| ret = ops->vidioc_g_output(file, fh, i); |
| if (!ret) |
| dbgarg(cmd, "value=%d\n", *i); |
| break; |
| } |
| case VIDIOC_S_OUTPUT: |
| { |
| unsigned int *i = arg; |
| |
| if (!ops->vidioc_s_output) |
| break; |
| dbgarg(cmd, "value=%d\n", *i); |
| ret = ops->vidioc_s_output(file, fh, *i); |
| break; |
| } |
| |
| /* --- controls ---------------------------------------------- */ |
| case VIDIOC_QUERYCTRL: |
| { |
| struct v4l2_queryctrl *p = arg; |
| |
| if (!ops->vidioc_queryctrl) |
| break; |
| ret = ops->vidioc_queryctrl(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "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); |
| else |
| dbgarg(cmd, "id=0x%x\n", p->id); |
| break; |
| } |
| case VIDIOC_G_CTRL: |
| { |
| struct v4l2_control *p = arg; |
| |
| if (ops->vidioc_g_ctrl) |
| ret = ops->vidioc_g_ctrl(file, fh, p); |
| else if (ops->vidioc_g_ext_ctrls) { |
| struct v4l2_ext_controls ctrls; |
| struct v4l2_ext_control ctrl; |
| |
| 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)) { |
| ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); |
| if (ret == 0) |
| p->value = ctrl.value; |
| } |
| } else |
| break; |
| if (!ret) |
| dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); |
| else |
| dbgarg(cmd, "id=0x%x\n", p->id); |
| break; |
| } |
| case VIDIOC_S_CTRL: |
| { |
| struct v4l2_control *p = arg; |
| struct v4l2_ext_controls ctrls; |
| struct v4l2_ext_control ctrl; |
| |
| if (!ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls) |
| break; |
| |
| dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); |
| |
| if (ops->vidioc_s_ctrl) { |
| ret = ops->vidioc_s_ctrl(file, fh, p); |
| break; |
| } |
| if (!ops->vidioc_s_ext_ctrls) |
| break; |
| |
| 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)) |
| ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); |
| break; |
| } |
| case VIDIOC_G_EXT_CTRLS: |
| { |
| struct v4l2_ext_controls *p = arg; |
| |
| p->error_idx = p->count; |
| if (!ops->vidioc_g_ext_ctrls) |
| break; |
| if (check_ext_ctrls(p, 0)) |
| ret = ops->vidioc_g_ext_ctrls(file, fh, p); |
| v4l_print_ext_ctrls(cmd, vfd, p, !ret); |
| break; |
| } |
| case VIDIOC_S_EXT_CTRLS: |
| { |
| struct v4l2_ext_controls *p = arg; |
| |
| p->error_idx = p->count; |
| if (!ops->vidioc_s_ext_ctrls) |
| break; |
| v4l_print_ext_ctrls(cmd, vfd, p, 1); |
| if (check_ext_ctrls(p, 0)) |
| ret = ops->vidioc_s_ext_ctrls(file, fh, p); |
| break; |
| } |
| case VIDIOC_TRY_EXT_CTRLS: |
| { |
| struct v4l2_ext_controls *p = arg; |
| |
| p->error_idx = p->count; |
| if (!ops->vidioc_try_ext_ctrls) |
| break; |
| v4l_print_ext_ctrls(cmd, vfd, p, 1); |
| if (check_ext_ctrls(p, 0)) |
| ret = ops->vidioc_try_ext_ctrls(file, fh, p); |
| break; |
| } |
| case VIDIOC_QUERYMENU: |
| { |
| struct v4l2_querymenu *p = arg; |
| |
| if (!ops->vidioc_querymenu) |
| break; |
| ret = ops->vidioc_querymenu(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "id=0x%x, index=%d, name=%s\n", |
| p->id, p->index, p->name); |
| else |
| dbgarg(cmd, "id=0x%x, index=%d\n", |
| p->id, p->index); |
| break; |
| } |
| /* --- audio ---------------------------------------------- */ |
| case VIDIOC_ENUMAUDIO: |
| { |
| struct v4l2_audio *p = arg; |
| |
| if (!ops->vidioc_enumaudio) |
| break; |
| ret = ops->vidioc_enumaudio(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " |
| "mode=0x%x\n", p->index, p->name, |
| p->capability, p->mode); |
| else |
| dbgarg(cmd, "index=%d\n", p->index); |
| break; |
| } |
| case VIDIOC_G_AUDIO: |
| { |
| struct v4l2_audio *p = arg; |
| |
| if (!ops->vidioc_g_audio) |
| break; |
| |
| ret = ops->vidioc_g_audio(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " |
| "mode=0x%x\n", p->index, |
| p->name, p->capability, p->mode); |
| else |
| dbgarg(cmd, "index=%d\n", p->index); |
| break; |
| } |
| case VIDIOC_S_AUDIO: |
| { |
| struct v4l2_audio *p = arg; |
| |
| if (!ops->vidioc_s_audio) |
| break; |
| dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " |
| "mode=0x%x\n", p->index, p->name, |
| p->capability, p->mode); |
| ret = ops->vidioc_s_audio(file, fh, p); |
| break; |
| } |
| case VIDIOC_ENUMAUDOUT: |
| { |
| struct v4l2_audioout *p = arg; |
| |
| if (!ops->vidioc_enumaudout) |
| break; |
| dbgarg(cmd, "Enum for index=%d\n", p->index); |
| ret = ops->vidioc_enumaudout(file, fh, p); |
| if (!ret) |
| dbgarg2("index=%d, name=%s, capability=%d, " |
| "mode=%d\n", p->index, p->name, |
| p->capability, p->mode); |
| break; |
| } |
| case VIDIOC_G_AUDOUT: |
| { |
| struct v4l2_audioout *p = arg; |
| |
| if (!ops->vidioc_g_audout) |
| break; |
| |
| ret = ops->vidioc_g_audout(file, fh, p); |
| if (!ret) |
| dbgarg2("index=%d, name=%s, capability=%d, " |
| "mode=%d\n", p->index, p->name, |
| p->capability, p->mode); |
| break; |
| } |
| case VIDIOC_S_AUDOUT: |
| { |
| struct v4l2_audioout *p = arg; |
| |
| if (!ops->vidioc_s_audout) |
| break; |
| dbgarg(cmd, "index=%d, name=%s, capability=%d, " |
| "mode=%d\n", p->index, p->name, |
| p->capability, p->mode); |
| |
| ret = ops->vidioc_s_audout(file, fh, p); |
| break; |
| } |
| case VIDIOC_G_MODULATOR: |
| { |
| struct v4l2_modulator *p = arg; |
| |
| if (!ops->vidioc_g_modulator) |
| break; |
| ret = ops->vidioc_g_modulator(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "index=%d, name=%s, " |
| "capability=%d, rangelow=%d," |
| " rangehigh=%d, txsubchans=%d\n", |
| p->index, p->name, p->capability, |
| p->rangelow, p->rangehigh, |
| p->txsubchans); |
| break; |
| } |
| case VIDIOC_S_MODULATOR: |
| { |
| struct v4l2_modulator *p = arg; |
| |
| if (!ops->vidioc_s_modulator) |
| break; |
| dbgarg(cmd, "index=%d, name=%s, capability=%d, " |
| "rangelow=%d, rangehigh=%d, txsubchans=%d\n", |
| p->index, p->name, p->capability, p->rangelow, |
| p->rangehigh, p->txsubchans); |
| ret = ops->vidioc_s_modulator(file, fh, p); |
| break; |
| } |
| case VIDIOC_G_CROP: |
| { |
| struct v4l2_crop *p = arg; |
| |
| if (!ops->vidioc_g_crop) |
| break; |
| |
| dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
| ret = ops->vidioc_g_crop(file, fh, p); |
| if (!ret) |
| dbgrect(vfd, "", &p->c); |
| break; |
| } |
| case VIDIOC_S_CROP: |
| { |
| struct v4l2_crop *p = arg; |
| |
| if (!ops->vidioc_s_crop) |
| break; |
| dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
| dbgrect(vfd, "", &p->c); |
| ret = ops->vidioc_s_crop(file, fh, p); |
| break; |
| } |
| case VIDIOC_CROPCAP: |
| { |
| struct v4l2_cropcap *p = arg; |
| |
| /*FIXME: Should also show v4l2_fract pixelaspect */ |
| if (!ops->vidioc_cropcap) |
| break; |
| |
| dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
| ret = ops->vidioc_cropcap(file, fh, p); |
| if (!ret) { |
| dbgrect(vfd, "bounds ", &p->bounds); |
| dbgrect(vfd, "defrect ", &p->defrect); |
| } |
| break; |
| } |
| case VIDIOC_G_JPEGCOMP: |
| { |
| struct v4l2_jpegcompression *p = arg; |
| |
| if (!ops->vidioc_g_jpegcomp) |
| break; |
| |
| ret = ops->vidioc_g_jpegcomp(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "quality=%d, APPn=%d, " |
| "APP_len=%d, COM_len=%d, " |
| "jpeg_markers=%d\n", |
| p->quality, p->APPn, p->APP_len, |
| p->COM_len, p->jpeg_markers); |
| break; |
| } |
| case VIDIOC_S_JPEGCOMP: |
| { |
| struct v4l2_jpegcompression *p = arg; |
| |
| if (!ops->vidioc_g_jpegcomp) |
| break; |
| dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, " |
| "COM_len=%d, jpeg_markers=%d\n", |
| p->quality, p->APPn, p->APP_len, |
| p->COM_len, p->jpeg_markers); |
| ret = ops->vidioc_s_jpegcomp(file, fh, p); |
| break; |
| } |
| case VIDIOC_G_ENC_INDEX: |
| { |
| struct v4l2_enc_idx *p = arg; |
| |
| if (!ops->vidioc_g_enc_index) |
| break; |
| ret = ops->vidioc_g_enc_index(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "entries=%d, entries_cap=%d\n", |
| p->entries, p->entries_cap); |
| break; |
| } |
| case VIDIOC_ENCODER_CMD: |
| { |
| struct v4l2_encoder_cmd *p = arg; |
| |
| if (!ops->vidioc_encoder_cmd) |
| break; |
| ret = ops->vidioc_encoder_cmd(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); |
| break; |
| } |
| case VIDIOC_TRY_ENCODER_CMD: |
| { |
| struct v4l2_encoder_cmd *p = arg; |
| |
| if (!ops->vidioc_try_encoder_cmd) |
| break; |
| ret = ops->vidioc_try_encoder_cmd(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); |
| break; |
| } |
| case VIDIOC_G_PARM: |
| { |
| struct v4l2_streamparm *p = arg; |
| |
| if (ops->vidioc_g_parm) { |
| ret = check_fmt(ops, p->type); |
| if (ret) |
| break; |
| ret = ops->vidioc_g_parm(file, fh, p); |
| } else { |
| if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| v4l2_video_std_frame_period(vfd->current_norm, |
| &p->parm.capture.timeperframe); |
| ret = 0; |
| } |
| |
| dbgarg(cmd, "type=%d\n", p->type); |
| break; |
| } |
| case VIDIOC_S_PARM: |
| { |
| struct v4l2_streamparm *p = arg; |
| |
| if (!ops->vidioc_s_parm) |
| break; |
| ret = check_fmt(ops, p->type); |
| if (ret) |
| break; |
| |
| dbgarg(cmd, "type=%d\n", p->type); |
| ret = ops->vidioc_s_parm(file, fh, p); |
| break; |
| } |
| case VIDIOC_G_TUNER: |
| { |
| struct v4l2_tuner *p = arg; |
| |
| if (!ops->vidioc_g_tuner) |
| break; |
| |
| ret = ops->vidioc_g_tuner(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "index=%d, name=%s, type=%d, " |
| "capability=0x%x, rangelow=%d, " |
| "rangehigh=%d, signal=%d, afc=%d, " |
| "rxsubchans=0x%x, audmode=%d\n", |
| p->index, p->name, p->type, |
| p->capability, p->rangelow, |
| p->rangehigh, p->signal, p->afc, |
| p->rxsubchans, p->audmode); |
| break; |
| } |
| case VIDIOC_S_TUNER: |
| { |
| struct v4l2_tuner *p = arg; |
| |
| if (!ops->vidioc_s_tuner) |
| break; |
| dbgarg(cmd, "index=%d, name=%s, type=%d, " |
| "capability=0x%x, rangelow=%d, " |
| "rangehigh=%d, signal=%d, afc=%d, " |
| "rxsubchans=0x%x, audmode=%d\n", |
| p->index, p->name, p->type, |
| p->capability, p->rangelow, |
| p->rangehigh, p->signal, p->afc, |
| p->rxsubchans, p->audmode); |
| ret = ops->vidioc_s_tuner(file, fh, p); |
| break; |
| } |
| case VIDIOC_G_FREQUENCY: |
| { |
| struct v4l2_frequency *p = arg; |
| |
| if (!ops->vidioc_g_frequency) |
| break; |
| |
| ret = ops->vidioc_g_frequency(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", |
| p->tuner, p->type, p->frequency); |
| break; |
| } |
| case VIDIOC_S_FREQUENCY: |
| { |
| struct v4l2_frequency *p = arg; |
| |
| if (!ops->vidioc_s_frequency) |
| break; |
| dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", |
| p->tuner, p->type, p->frequency); |
| ret = ops->vidioc_s_frequency(file, fh, p); |
| break; |
| } |
| case VIDIOC_G_SLICED_VBI_CAP: |
| { |
| struct v4l2_sliced_vbi_cap *p = arg; |
| |
| if (!ops->vidioc_g_sliced_vbi_cap) |
| break; |
| |
| /* Clear up to type, everything after type is zerod already */ |
| memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); |
| |
| dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
| ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p); |
| if (!ret) |
| dbgarg2("service_set=%d\n", p->service_set); |
| break; |
| } |
| case VIDIOC_LOG_STATUS: |
| { |
| if (!ops->vidioc_log_status) |
| break; |
| ret = ops->vidioc_log_status(file, fh); |
| break; |
| } |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| case VIDIOC_DBG_G_REGISTER: |
| { |
| struct v4l2_dbg_register *p = arg; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| ret = -EPERM; |
| else if (ops->vidioc_g_register) |
| ret = ops->vidioc_g_register(file, fh, p); |
| break; |
| } |
| case VIDIOC_DBG_S_REGISTER: |
| { |
| struct v4l2_dbg_register *p = arg; |
| |
| if (!capable(CAP_SYS_ADMIN)) |
| ret = -EPERM; |
| else if (ops->vidioc_s_register) |
| ret = ops->vidioc_s_register(file, fh, p); |
| break; |
| } |
| #endif |
| case VIDIOC_DBG_G_CHIP_IDENT: |
| { |
| struct v4l2_dbg_chip_ident *p = arg; |
| |
| if (!ops->vidioc_g_chip_ident) |
| break; |
| p->ident = V4L2_IDENT_NONE; |
| p->revision = 0; |
| ret = ops->vidioc_g_chip_ident(file, fh, p); |
| if (!ret) |
| dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision); |
| break; |
| } |
| case VIDIOC_S_HW_FREQ_SEEK: |
| { |
| struct v4l2_hw_freq_seek *p = arg; |
| |
| if (!ops->vidioc_s_hw_freq_seek) |
| break; |
| dbgarg(cmd, |
| "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n", |
| p->tuner, p->type, p->seek_upward, p->wrap_around); |
| ret = ops->vidioc_s_hw_freq_seek(file, fh, p); |
| break; |
| } |
| case VIDIOC_ENUM_FRAMESIZES: |
| { |
| struct v4l2_frmsizeenum *p = arg; |
| |
| if (!ops->vidioc_enum_framesizes) |
| break; |
| |
| ret = ops->vidioc_enum_framesizes(file, fh, p); |
| dbgarg(cmd, |
| "index=%d, pixelformat=%d, type=%d ", |
| p->index, p->pixel_format, p->type); |
| switch (p->type) { |
| case V4L2_FRMSIZE_TYPE_DISCRETE: |
| dbgarg2("width = %d, height=%d\n", |
| p->discrete.width, p->discrete.height); |
| break; |
| case V4L2_FRMSIZE_TYPE_STEPWISE: |
| dbgarg2("min %dx%d, max %dx%d, step %dx%d\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: |
| dbgarg2("continuous\n"); |
| break; |
| default: |
| dbgarg2("- Unknown type!\n"); |
| } |
| |
| break; |
| } |
| case VIDIOC_ENUM_FRAMEINTERVALS: |
| { |
| struct v4l2_frmivalenum *p = arg; |
| |
| if (!ops->vidioc_enum_frameintervals) |
| break; |
| |
| ret = ops->vidioc_enum_frameintervals(file, fh, p); |
| dbgarg(cmd, |
| "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ", |
| p->index, p->pixel_format, |
| p->width, p->height, p->type); |
| switch (p->type) { |
| case V4L2_FRMIVAL_TYPE_DISCRETE: |
| dbgarg2("fps=%d/%d\n", |
| p->discrete.numerator, |
| p->discrete.denominator); |
| break; |
| case V4L2_FRMIVAL_TYPE_STEPWISE: |
| dbgarg2("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: |
| dbgarg2("continuous\n"); |
| break; |
| default: |
| dbgarg2("- Unknown type!\n"); |
| } |
| break; |
| } |
| |
| default: |
| { |
| if (!ops->vidioc_default) |
| break; |
| ret = ops->vidioc_default(file, fh, cmd, arg); |
| break; |
| } |
| } /* switch */ |
| |
| if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { |
| if (ret < 0) { |
| v4l_print_ioctl(vfd->name, cmd); |
| printk(KERN_CONT " error %ld\n", ret); |
| } |
| } |
| |
| return ret; |
| } |
| |
| /* 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. */ |
| static unsigned long cmd_input_size(unsigned int cmd) |
| { |
| /* Size of structure up to and including 'field' */ |
| #define CMDINSIZE(cmd, type, field) \ |
| case VIDIOC_##cmd: \ |
| return offsetof(struct v4l2_##type, field) + \ |
| sizeof(((struct v4l2_##type *)0)->field); |
| |
| switch (cmd) { |
| CMDINSIZE(ENUM_FMT, fmtdesc, type); |
| CMDINSIZE(G_FMT, format, type); |
| CMDINSIZE(QUERYBUF, buffer, type); |
| CMDINSIZE(G_PARM, streamparm, type); |
| CMDINSIZE(ENUMSTD, standard, index); |
| CMDINSIZE(ENUMINPUT, input, index); |
| CMDINSIZE(G_CTRL, control, id); |
| CMDINSIZE(G_TUNER, tuner, index); |
| CMDINSIZE(QUERYCTRL, queryctrl, id); |
| CMDINSIZE(QUERYMENU, querymenu, index); |
| CMDINSIZE(ENUMOUTPUT, output, index); |
| CMDINSIZE(G_MODULATOR, modulator, index); |
| CMDINSIZE(G_FREQUENCY, frequency, tuner); |
| CMDINSIZE(CROPCAP, cropcap, type); |
| CMDINSIZE(G_CROP, crop, type); |
| CMDINSIZE(ENUMAUDIO, audio, index); |
| CMDINSIZE(ENUMAUDOUT, audioout, index); |
| CMDINSIZE(ENCODER_CMD, encoder_cmd, flags); |
| CMDINSIZE(TRY_ENCODER_CMD, encoder_cmd, flags); |
| CMDINSIZE(G_SLICED_VBI_CAP, sliced_vbi_cap, type); |
| CMDINSIZE(ENUM_FRAMESIZES, frmsizeenum, pixel_format); |
| CMDINSIZE(ENUM_FRAMEINTERVALS, frmivalenum, height); |
| default: |
| return _IOC_SIZE(cmd); |
| } |
| } |
| |
| long video_ioctl2(struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| char sbuf[128]; |
| void *mbuf = NULL; |
| void *parg = NULL; |
| long err = -EINVAL; |
| int is_ext_ctrl; |
| size_t ctrls_size = 0; |
| void __user *user_ptr = NULL; |
| |
| #ifdef __OLD_VIDIOC_ |
| cmd = video_fix_command(cmd); |
| #endif |
| is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || |
| cmd == VIDIOC_TRY_EXT_CTRLS); |
| |
| /* 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 long n = cmd_input_size(cmd); |
| |
| 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)); |
| } |
| } |
| |
| if (is_ext_ctrl) { |
| struct v4l2_ext_controls *p = parg; |
| |
| /* In case of an error, tell the caller that it wasn't |
| a specific control that caused it. */ |
| p->error_idx = p->count; |
| user_ptr = (void __user *)p->controls; |
| if (p->count) { |
| ctrls_size = sizeof(struct v4l2_ext_control) * p->count; |
| /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ |
| mbuf = kmalloc(ctrls_size, GFP_KERNEL); |
| err = -ENOMEM; |
| if (NULL == mbuf) |
| goto out_ext_ctrl; |
| err = -EFAULT; |
| if (copy_from_user(mbuf, user_ptr, ctrls_size)) |
| goto out_ext_ctrl; |
| p->controls = mbuf; |
| } |
| } |
| |
| /* Handles IOCTL */ |
| err = __video_do_ioctl(file, cmd, parg); |
| if (err == -ENOIOCTLCMD) |
| err = -EINVAL; |
| if (is_ext_ctrl) { |
| struct v4l2_ext_controls *p = parg; |
| |
| p->controls = (void *)user_ptr; |
| if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) |
| err = -EFAULT; |
| goto out_ext_ctrl; |
| } |
| if (err < 0) |
| goto out; |
| |
| out_ext_ctrl: |
| /* 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_ioctl2); |