--- /dev/null
+/*
+ * 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@redhat.com> (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/videodev2.h>
+
+#ifdef CONFIG_VIDEO_V4L1
+#include <linux/videodev.h>
+#endif
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <linux/video_decoder.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);
+
+/* 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)
+{
+ u32 index = vs->index;
+
+ memset(vs, 0, sizeof(struct v4l2_standard));
+ vs->index = index;
+ vs->id = id;
+ if (id & V4L2_STD_525_60) {
+ vs->frameperiod.numerator = 1001;
+ vs->frameperiod.denominator = 30000;
+ vs->framelines = 525;
+ } else {
+ vs->frameperiod.numerator = 1;
+ vs->frameperiod.denominator = 25;
+ vs->framelines = 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_G_CHIP_IDENT)] = "VIDIOC_G_CHIP_IDENT",
+ [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK",
+#endif
+};
+#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
+
+static const char *v4l2_int_ioctls[] = {
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ [_IOC_NR(DECODER_GET_CAPABILITIES)] = "DECODER_GET_CAPABILITIES",
+ [_IOC_NR(DECODER_GET_STATUS)] = "DECODER_GET_STATUS",
+ [_IOC_NR(DECODER_SET_NORM)] = "DECODER_SET_NORM",
+ [_IOC_NR(DECODER_SET_INPUT)] = "DECODER_SET_INPUT",
+ [_IOC_NR(DECODER_SET_OUTPUT)] = "DECODER_SET_OUTPUT",
+ [_IOC_NR(DECODER_ENABLE_OUTPUT)] = "DECODER_ENABLE_OUTPUT",
+ [_IOC_NR(DECODER_SET_PICTURE)] = "DECODER_SET_PICTURE",
+ [_IOC_NR(DECODER_SET_GPIO)] = "DECODER_SET_GPIO",
+ [_IOC_NR(DECODER_INIT)] = "DECODER_INIT",
+ [_IOC_NR(DECODER_SET_VBI_BYPASS)] = "DECODER_SET_VBI_BYPASS",
+ [_IOC_NR(DECODER_DUMP)] = "DECODER_DUMP",
+#endif
+ [_IOC_NR(AUDC_SET_RADIO)] = "AUDC_SET_RADIO",
+
+ [_IOC_NR(TUNER_SET_TYPE_ADDR)] = "TUNER_SET_TYPE_ADDR",
+ [_IOC_NR(TUNER_SET_STANDBY)] = "TUNER_SET_STANDBY",
+ [_IOC_NR(TUNER_SET_CONFIG)] = "TUNER_SET_CONFIG",
+
+ [_IOC_NR(VIDIOC_INT_S_TUNER_MODE)] = "VIDIOC_INT_S_TUNER_MODE",
+ [_IOC_NR(VIDIOC_INT_RESET)] = "VIDIOC_INT_RESET",
+ [_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
+ [_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)] = "VIDIOC_INT_DECODE_VBI_LINE",
+ [_IOC_NR(VIDIOC_INT_S_VBI_DATA)] = "VIDIOC_INT_S_VBI_DATA",
+ [_IOC_NR(VIDIOC_INT_G_VBI_DATA)] = "VIDIOC_INT_G_VBI_DATA",
+ [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)] = "VIDIOC_INT_I2S_CLOCK_FREQ",
+ [_IOC_NR(VIDIOC_INT_S_STANDBY)] = "VIDIOC_INT_S_STANDBY",
+ [_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)] = "VIDIOC_INT_S_AUDIO_ROUTING",
+ [_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)] = "VIDIOC_INT_G_AUDIO_ROUTING",
+ [_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)] = "VIDIOC_INT_S_VIDEO_ROUTING",
+ [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)] = "VIDIOC_INT_G_VIDEO_ROUTING",
+ [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)] = "VIDIOC_INT_S_CRYSTAL_FREQ",
+ [_IOC_NR(VIDIOC_INT_INIT)] = "VIDIOC_INT_INIT",
+ [_IOC_NR(VIDIOC_INT_G_STD_OUTPUT)] = "VIDIOC_INT_G_STD_OUTPUT",
+ [_IOC_NR(VIDIOC_INT_S_STD_OUTPUT)] = "VIDIOC_INT_S_STD_OUTPUT",
+};
+#define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_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':
+ if (_IOC_NR(cmd) >= V4L2_INT_IOCTLS) {
+ type = "v4l2_int";
+ break;
+ }
+ printk("%s", v4l2_int_ioctls[_IOC_NR(cmd)]);
+ return;
+#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
+ */
+int
+video_usercopy(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg,
+ int (*func)(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg))
+{
+ char sbuf[128];
+ void *mbuf = NULL;
+ void *parg = NULL;
+ int 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(inode, 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),
+ 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(struct video_device *vfd, enum v4l2_buf_type type)
+{
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ if (vfd->vidioc_try_fmt_vid_cap)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ if (vfd->vidioc_try_fmt_vid_overlay)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_try_fmt_vid_out)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
+ if (vfd->vidioc_try_fmt_vid_out_overlay)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_vbi_cap)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_vbi_out)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_sliced_vbi_cap)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_sliced_vbi_out)
+ return 0;
+ break;
+ case V4L2_BUF_TYPE_PRIVATE:
+ if (vfd->vidioc_try_fmt_type_private)
+ return 0;
+ break;
+ }
+ return -EINVAL;
+}
+
+static int __video_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ struct video_device *vfd = video_devdata(file);
+ void *fh = file->private_data;
+ int ret = -EINVAL;
+
+ if ((vfd->debug & V4L2_DEBUG_IOCTL) &&
+ !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
+ v4l_print_ioctl(vfd->name, cmd);
+ printk(KERN_CONT "\n");
+ }
+
+#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;
+
+ memset(p, 0, sizeof(*p));
+
+ if (!vfd->vidiocgmbuf)
+ return ret;
+ ret = vfd->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')
+ return v4l_compat_translate_ioctl(inode, file, cmd, arg,
+ __video_do_ioctl);
+#endif
+
+ switch (cmd) {
+ /* --- capabilities ------------------------------------------ */
+ case VIDIOC_QUERYCAP:
+ {
+ struct v4l2_capability *cap = (struct v4l2_capability *)arg;
+ memset(cap, 0, sizeof(*cap));
+
+ if (!vfd->vidioc_querycap)
+ break;
+
+ ret = vfd->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 (!vfd->vidioc_g_priority)
+ break;
+ ret = vfd->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 (!vfd->vidioc_s_priority)
+ break;
+ dbgarg(cmd, "setting priority to %d\n", *p);
+ ret = vfd->vidioc_s_priority(file, fh, *p);
+ break;
+ }
+
+ /* --- capture ioctls ---------------------------------------- */
+ case VIDIOC_ENUM_FMT:
+ {
+ struct v4l2_fmtdesc *f = arg;
+ enum v4l2_buf_type type;
+ unsigned int index;
+
+ index = f->index;
+ type = f->type;
+ memset(f, 0, sizeof(*f));
+ f->index = index;
+ f->type = type;
+
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ if (vfd->vidioc_enum_fmt_vid_cap)
+ ret = vfd->vidioc_enum_fmt_vid_cap(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ if (vfd->vidioc_enum_fmt_vid_overlay)
+ ret = vfd->vidioc_enum_fmt_vid_overlay(file,
+ fh, f);
+ break;
+#if 1
+ /* V4L2_BUF_TYPE_VBI_CAPTURE should not support VIDIOC_ENUM_FMT
+ * according to the spec. The bttv and saa7134 drivers support
+ * it though, so just warn that this is deprecated and will be
+ * removed in the near future. */
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_enum_fmt_vbi_cap) {
+ printk(KERN_WARNING "vidioc_enum_fmt_vbi_cap will be removed in 2.6.28!\n");
+ ret = vfd->vidioc_enum_fmt_vbi_cap(file, fh, f);
+ }
+ break;
+#endif
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_enum_fmt_vid_out)
+ ret = vfd->vidioc_enum_fmt_vid_out(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_PRIVATE:
+ if (vfd->vidioc_enum_fmt_type_private)
+ ret = vfd->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;
+
+ memset(f->fmt.raw_data, 0, sizeof(f->fmt.raw_data));
+
+ /* 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 (vfd->vidioc_g_fmt_vid_cap)
+ ret = vfd->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 (vfd->vidioc_g_fmt_vid_overlay)
+ ret = vfd->vidioc_g_fmt_vid_overlay(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_g_fmt_vid_out)
+ ret = vfd->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 (vfd->vidioc_g_fmt_vid_out_overlay)
+ ret = vfd->vidioc_g_fmt_vid_out_overlay(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_g_fmt_vbi_cap)
+ ret = vfd->vidioc_g_fmt_vbi_cap(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_g_fmt_vbi_out)
+ ret = vfd->vidioc_g_fmt_vbi_out(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_g_fmt_sliced_vbi_cap)
+ ret = vfd->vidioc_g_fmt_sliced_vbi_cap(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_g_fmt_sliced_vbi_out)
+ ret = vfd->vidioc_g_fmt_sliced_vbi_out(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_PRIVATE:
+ if (vfd->vidioc_g_fmt_type_private)
+ ret = vfd->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 (vfd->vidioc_s_fmt_vid_cap)
+ ret = vfd->vidioc_s_fmt_vid_cap(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ if (vfd->vidioc_s_fmt_vid_overlay)
+ ret = vfd->vidioc_s_fmt_vid_overlay(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ v4l_print_pix_fmt(vfd, &f->fmt.pix);
+ if (vfd->vidioc_s_fmt_vid_out)
+ ret = vfd->vidioc_s_fmt_vid_out(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
+ if (vfd->vidioc_s_fmt_vid_out_overlay)
+ ret = vfd->vidioc_s_fmt_vid_out_overlay(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_s_fmt_vbi_cap)
+ ret = vfd->vidioc_s_fmt_vbi_cap(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_s_fmt_vbi_out)
+ ret = vfd->vidioc_s_fmt_vbi_out(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_s_fmt_sliced_vbi_cap)
+ ret = vfd->vidioc_s_fmt_sliced_vbi_cap(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_s_fmt_sliced_vbi_out)
+ ret = vfd->vidioc_s_fmt_sliced_vbi_out(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_PRIVATE:
+ if (vfd->vidioc_s_fmt_type_private)
+ ret = vfd->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 (vfd->vidioc_try_fmt_vid_cap)
+ ret = vfd->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 (vfd->vidioc_try_fmt_vid_overlay)
+ ret = vfd->vidioc_try_fmt_vid_overlay(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ if (vfd->vidioc_try_fmt_vid_out)
+ ret = vfd->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 (vfd->vidioc_try_fmt_vid_out_overlay)
+ ret = vfd->vidioc_try_fmt_vid_out_overlay(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_vbi_cap)
+ ret = vfd->vidioc_try_fmt_vbi_cap(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_vbi_out)
+ ret = vfd->vidioc_try_fmt_vbi_out(file, fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
+ if (vfd->vidioc_try_fmt_sliced_vbi_cap)
+ ret = vfd->vidioc_try_fmt_sliced_vbi_cap(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
+ if (vfd->vidioc_try_fmt_sliced_vbi_out)
+ ret = vfd->vidioc_try_fmt_sliced_vbi_out(file,
+ fh, f);
+ break;
+ case V4L2_BUF_TYPE_PRIVATE:
+ if (vfd->vidioc_try_fmt_type_private)
+ ret = vfd->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 (!vfd->vidioc_reqbufs)
+ break;
+ ret = check_fmt(vfd, p->type);
+ if (ret)
+ break;
+
+ ret = vfd->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 (!vfd->vidioc_querybuf)
+ break;
+ ret = check_fmt(vfd, p->type);
+ if (ret)
+ break;
+
+ ret = vfd->vidioc_querybuf(file, fh, p);
+ if (!ret)
+ dbgbuf(cmd, vfd, p);
+ break;
+ }
+ case VIDIOC_QBUF:
+ {
+ struct v4l2_buffer *p = arg;
+
+ if (!vfd->vidioc_qbuf)
+ break;
+ ret = check_fmt(vfd, p->type);
+ if (ret)
+ break;
+
+ ret = vfd->vidioc_qbuf(file, fh, p);
+ if (!ret)
+ dbgbuf(cmd, vfd, p);
+ break;
+ }
+ case VIDIOC_DQBUF:
+ {
+ struct v4l2_buffer *p = arg;
+
+ if (!vfd->vidioc_dqbuf)
+ break;
+ ret = check_fmt(vfd, p->type);
+ if (ret)
+ break;
+
+ ret = vfd->vidioc_dqbuf(file, fh, p);
+ if (!ret)
+ dbgbuf(cmd, vfd, p);
+ break;
+ }
+ case VIDIOC_OVERLAY:
+ {
+ int *i = arg;
+
+ if (!vfd->vidioc_overlay)
+ break;
+ dbgarg(cmd, "value=%d\n", *i);
+ ret = vfd->vidioc_overlay(file, fh, *i);
+ break;
+ }
+ case VIDIOC_G_FBUF:
+ {
+ struct v4l2_framebuffer *p = arg;
+
+ if (!vfd->vidioc_g_fbuf)
+ break;
+ ret = vfd->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 (!vfd->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 = vfd->vidioc_s_fbuf(file, fh, arg);
+ break;
+ }
+ case VIDIOC_STREAMON:
+ {
+ enum v4l2_buf_type i = *(int *)arg;
+
+ if (!vfd->vidioc_streamon)
+ break;
+ dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
+ ret = vfd->vidioc_streamon(file, fh, i);
+ break;
+ }
+ case VIDIOC_STREAMOFF:
+ {
+ enum v4l2_buf_type i = *(int *)arg;
+
+ if (!vfd->vidioc_streamoff)
+ break;
+ dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
+ ret = vfd->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);
+ p->index = index;
+
+ 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 (vfd->vidioc_g_std)
+ ret = vfd->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 (vfd->vidioc_s_std)
+ ret = vfd->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 (!vfd->vidioc_querystd)
+ break;
+ ret = vfd->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;
+ int i = p->index;
+
+ if (!vfd->vidioc_enum_input)
+ break;
+ memset(p, 0, sizeof(*p));
+ p->index = i;
+
+ ret = vfd->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 (!vfd->vidioc_g_input)
+ break;
+ ret = vfd->vidioc_g_input(file, fh, i);
+ if (!ret)
+ dbgarg(cmd, "value=%d\n", *i);
+ break;
+ }
+ case VIDIOC_S_INPUT:
+ {
+ unsigned int *i = arg;
+
+ if (!vfd->vidioc_s_input)
+ break;
+ dbgarg(cmd, "value=%d\n", *i);
+ ret = vfd->vidioc_s_input(file, fh, *i);
+ break;
+ }
+
+ /* ------ output switching ---------- */
+ case VIDIOC_ENUMOUTPUT:
+ {
+ struct v4l2_output *p = arg;
+ int i = p->index;
+
+ if (!vfd->vidioc_enum_output)
+ break;
+ memset(p, 0, sizeof(*p));
+ p->index = i;
+
+ ret = vfd->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 (!vfd->vidioc_g_output)
+ break;
+ ret = vfd->vidioc_g_output(file, fh, i);
+ if (!ret)
+ dbgarg(cmd, "value=%d\n", *i);
+ break;
+ }
+ case VIDIOC_S_OUTPUT:
+ {
+ unsigned int *i = arg;
+
+ if (!vfd->vidioc_s_output)
+ break;
+ dbgarg(cmd, "value=%d\n", *i);
+ ret = vfd->vidioc_s_output(file, fh, *i);
+ break;
+ }
+
+ /* --- controls ---------------------------------------------- */
+ case VIDIOC_QUERYCTRL:
+ {
+ struct v4l2_queryctrl *p = arg;
+
+ if (!vfd->vidioc_queryctrl)
+ break;
+ ret = vfd->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 (vfd->vidioc_g_ctrl)
+ ret = vfd->vidioc_g_ctrl(file, fh, p);
+ else if (vfd->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 = vfd->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 (!vfd->vidioc_s_ctrl && !vfd->vidioc_s_ext_ctrls)
+ break;
+
+ dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
+
+ if (vfd->vidioc_s_ctrl) {
+ ret = vfd->vidioc_s_ctrl(file, fh, p);
+ break;
+ }
+ if (!vfd->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 = vfd->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 (!vfd->vidioc_g_ext_ctrls)
+ break;
+ if (check_ext_ctrls(p, 0))
+ ret = vfd->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 (!vfd->vidioc_s_ext_ctrls)
+ break;
+ v4l_print_ext_ctrls(cmd, vfd, p, 1);
+ if (check_ext_ctrls(p, 0))
+ ret = vfd->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 (!vfd->vidioc_try_ext_ctrls)
+ break;
+ v4l_print_ext_ctrls(cmd, vfd, p, 1);
+ if (check_ext_ctrls(p, 0))
+ ret = vfd->vidioc_try_ext_ctrls(file, fh, p);
+ break;
+ }
+ case VIDIOC_QUERYMENU:
+ {
+ struct v4l2_querymenu *p = arg;
+
+ if (!vfd->vidioc_querymenu)
+ break;
+ ret = vfd->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 (!vfd->vidioc_enumaudio)
+ break;
+ ret = vfd->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;
+ __u32 index = p->index;
+
+ if (!vfd->vidioc_g_audio)
+ break;
+
+ memset(p, 0, sizeof(*p));
+ p->index = index;
+ ret = vfd->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 (!vfd->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 = vfd->vidioc_s_audio(file, fh, p);
+ break;
+ }
+ case VIDIOC_ENUMAUDOUT:
+ {
+ struct v4l2_audioout *p = arg;
+
+ if (!vfd->vidioc_enumaudout)
+ break;
+ dbgarg(cmd, "Enum for index=%d\n", p->index);
+ ret = vfd->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 (!vfd->vidioc_g_audout)
+ break;
+ dbgarg(cmd, "Enum for index=%d\n", p->index);
+ ret = vfd->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 (!vfd->vidioc_s_audout)
+ break;
+ dbgarg(cmd, "index=%d, name=%s, capability=%d, "
+ "mode=%d\n", p->index, p->name,
+ p->capability, p->mode);
+
+ ret = vfd->vidioc_s_audout(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_MODULATOR:
+ {
+ struct v4l2_modulator *p = arg;
+
+ if (!vfd->vidioc_g_modulator)
+ break;
+ ret = vfd->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 (!vfd->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 = vfd->vidioc_s_modulator(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_CROP:
+ {
+ struct v4l2_crop *p = arg;
+
+ if (!vfd->vidioc_g_crop)
+ break;
+ dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
+ ret = vfd->vidioc_g_crop(file, fh, p);
+ if (!ret)
+ dbgrect(vfd, "", &p->c);
+ break;
+ }
+ case VIDIOC_S_CROP:
+ {
+ struct v4l2_crop *p = arg;
+
+ if (!vfd->vidioc_s_crop)
+ break;
+ dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
+ dbgrect(vfd, "", &p->c);
+ ret = vfd->vidioc_s_crop(file, fh, p);
+ break;
+ }
+ case VIDIOC_CROPCAP:
+ {
+ struct v4l2_cropcap *p = arg;
+
+ /*FIXME: Should also show v4l2_fract pixelaspect */
+ if (!vfd->vidioc_cropcap)
+ break;
+ dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
+ ret = vfd->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 (!vfd->vidioc_g_jpegcomp)
+ break;
+ ret = vfd->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 (!vfd->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 = vfd->vidioc_s_jpegcomp(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_ENC_INDEX:
+ {
+ struct v4l2_enc_idx *p = arg;
+
+ if (!vfd->vidioc_g_enc_index)
+ break;
+ ret = vfd->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 (!vfd->vidioc_encoder_cmd)
+ break;
+ memset(&p->raw, 0, sizeof(p->raw));
+ ret = vfd->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 (!vfd->vidioc_try_encoder_cmd)
+ break;
+ memset(&p->raw, 0, sizeof(p->raw));
+ ret = vfd->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;
+ __u32 type = p->type;
+
+ memset(p, 0, sizeof(*p));
+ p->type = type;
+
+ if (vfd->vidioc_g_parm) {
+ ret = vfd->vidioc_g_parm(file, fh, p);
+ } else {
+ struct v4l2_standard s;
+
+ if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ v4l2_video_std_construct(&s, vfd->current_norm,
+ v4l2_norm_to_name(vfd->current_norm));
+
+ p->parm.capture.timeperframe = s.frameperiod;
+ ret = 0;
+ }
+
+ dbgarg(cmd, "type=%d\n", p->type);
+ break;
+ }
+ case VIDIOC_S_PARM:
+ {
+ struct v4l2_streamparm *p = arg;
+
+ if (!vfd->vidioc_s_parm)
+ break;
+ dbgarg(cmd, "type=%d\n", p->type);
+ ret = vfd->vidioc_s_parm(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_TUNER:
+ {
+ struct v4l2_tuner *p = arg;
+ __u32 index = p->index;
+
+ if (!vfd->vidioc_g_tuner)
+ break;
+
+ memset(p, 0, sizeof(*p));
+ p->index = index;
+
+ ret = vfd->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 (!vfd->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 = vfd->vidioc_s_tuner(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_FREQUENCY:
+ {
+ struct v4l2_frequency *p = arg;
+
+ if (!vfd->vidioc_g_frequency)
+ break;
+
+ memset(p->reserved, 0, sizeof(p->reserved));
+
+ ret = vfd->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 (!vfd->vidioc_s_frequency)
+ break;
+ dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
+ p->tuner, p->type, p->frequency);
+ ret = vfd->vidioc_s_frequency(file, fh, p);
+ break;
+ }
+ case VIDIOC_G_SLICED_VBI_CAP:
+ {
+ struct v4l2_sliced_vbi_cap *p = arg;
+ __u32 type = p->type;
+
+ if (!vfd->vidioc_g_sliced_vbi_cap)
+ break;
+ memset(p, 0, sizeof(*p));
+ p->type = type;
+ dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
+ ret = vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
+ if (!ret)
+ dbgarg2("service_set=%d\n", p->service_set);
+ break;
+ }
+ case VIDIOC_LOG_STATUS:
+ {
+ if (!vfd->vidioc_log_status)
+ break;
+ ret = vfd->vidioc_log_status(file, fh);
+ break;
+ }
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ case VIDIOC_DBG_G_REGISTER:
+ {
+ struct v4l2_register *p = arg;
+
+ if (!capable(CAP_SYS_ADMIN))
+ ret = -EPERM;
+ else if (vfd->vidioc_g_register)
+ ret = vfd->vidioc_g_register(file, fh, p);
+ break;
+ }
+ case VIDIOC_DBG_S_REGISTER:
+ {
+ struct v4l2_register *p = arg;
+
+ if (!capable(CAP_SYS_ADMIN))
+ ret = -EPERM;
+ else if (vfd->vidioc_s_register)
+ ret = vfd->vidioc_s_register(file, fh, p);
+ break;
+ }
+#endif
+ case VIDIOC_G_CHIP_IDENT:
+ {
+ struct v4l2_chip_ident *p = arg;
+
+ if (!vfd->vidioc_g_chip_ident)
+ break;
+ ret = vfd->vidioc_g_chip_ident(file, fh, p);
+ if (!ret)
+ dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
+ break;
+ }
+ default:
+ {
+ if (!vfd->vidioc_default)
+ break;
+ ret = vfd->vidioc_default(file, fh, cmd, arg);
+ break;
+ }
+ case VIDIOC_S_HW_FREQ_SEEK:
+ {
+ struct v4l2_hw_freq_seek *p = arg;
+
+ if (!vfd->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 = vfd->vidioc_s_hw_freq_seek(file, fh, p);
+ break;
+ }
+ } /* switch */
+
+ if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
+ if (ret < 0) {
+ v4l_print_ioctl(vfd->name, cmd);
+ printk(KERN_CONT " error %d\n", ret);
+ }
+ }
+
+ return ret;
+}
+
+int video_ioctl2(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ char sbuf[128];
+ void *mbuf = NULL;
+ void *parg = NULL;
+ int 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;
+ }
+ }
+
+ /* Handles IOCTL */
+ err = __video_do_ioctl(inode, 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);
projects / linux-2.6 / commitdiff