diff options
Diffstat (limited to 'drivers/media/video/v4l2-common.c')
| -rw-r--r-- | drivers/media/video/v4l2-common.c | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c deleted file mode 100644 index cd2c4475525..00000000000 --- a/drivers/media/video/v4l2-common.c +++ /dev/null @@ -1,384 +0,0 @@ -/* - * Video for Linux Two - * - * A generic video device interface for the LINUX operating system - * using a set of device structures/vectors for low level operations. - * - * This file replaces the videodev.c file that comes with the - * regular kernel distribution. - * - * 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. - * - * Author: Bill Dirks <bdirks@pacbell.net> - * based on code by Alan Cox, <alan@cymru.net> - * - */ - -/* - * Video capture interface for Linux - * - * A generic video device interface for the LINUX operating system - * using a set of device structures/vectors for low level operations. - * - * 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. - * - * Author: Alan Cox, <alan@redhat.com> - * - * Fixes: - */ - -/* - * Video4linux 1/2 integration by Justin Schoeman - * <justin@suntiger.ee.up.ac.za> - * 2.4 PROCFS support ported from 2.4 kernels by - * Iñaki García Etxebarria <garetxe@euskalnet.net> - * Makefile fix by "W. Michael Petullo" <mike@flyn.org> - * 2.4 devfs support ported from 2.4 kernels by - * Dan Merillat <dan@merillat.org> - * Added Gerd Knorrs v4l1 enhancements (Justin Schoeman) - */ - -#include <linux/config.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/smp_lock.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/io.h> -#include <asm/div64.h> -#include <linux/video_decoder.h> -#include <media/v4l2-common.h> - -#ifdef CONFIG_KMOD -#include <linux/kmod.h> -#endif - -#if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE) -#include <linux/ust.h> -#endif - - -#include <linux/videodev.h> - -MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr"); -MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers"); -MODULE_LICENSE("GPL"); - -/* - * - * V 4 L 2 D R I V E R H E L P E R A P I - * - */ - -/* - * Video Standard Operations (contributed by Michael Schimek) - */ - - -/* 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, char *name) -{ - u32 index = vs->index; - - memset(vs, 0, sizeof(struct v4l2_standard)); - vs->index = index; - vs->id = id; - if (id & (V4L2_STD_NTSC | V4L2_STD_PAL_M)) { - 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; -} - - -/* ----------------------------------------------------------------- */ -/* priority handling */ - -#define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND || \ - val == V4L2_PRIORITY_INTERACTIVE || \ - val == V4L2_PRIORITY_RECORD) - -int v4l2_prio_init(struct v4l2_prio_state *global) -{ - memset(global,0,sizeof(*global)); - return 0; -} - -int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local, - enum v4l2_priority new) -{ - if (!V4L2_PRIO_VALID(new)) - return -EINVAL; - if (*local == new) - return 0; - - atomic_inc(&global->prios[new]); - if (V4L2_PRIO_VALID(*local)) - atomic_dec(&global->prios[*local]); - *local = new; - return 0; -} - -int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local) -{ - return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT); -} - -int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local) -{ - if (V4L2_PRIO_VALID(*local)) - atomic_dec(&global->prios[*local]); - return 0; -} - -enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global) -{ - if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0) - return V4L2_PRIORITY_RECORD; - if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0) - return V4L2_PRIORITY_INTERACTIVE; - if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0) - return V4L2_PRIORITY_BACKGROUND; - return V4L2_PRIORITY_UNSET; -} - -int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local) -{ - if (*local < v4l2_prio_max(global)) - return -EBUSY; - return 0; -} - - -/* ----------------------------------------------------------------- */ -/* some arrays for pretty-printing debug messages */ - -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", -}; - -char *v4l2_type_names[] = { - [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap", - [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over", - [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "video-out", - [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", - [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", -}; - -/* ------------------------------------------------------------------ */ -/* debug help functions */ - -#ifdef HAVE_V4L1 -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_G_MPEGCOMP)] = "VIDIOC_G_MPEGCOMP", - [_IOC_NR(VIDIOC_S_MPEGCOMP)] = "VIDIOC_S_MPEGCOMP", - [_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", -#if 1 - [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP", -#endif - [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS" -}; -#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) - -static const char *v4l2_int_ioctls[] = { -#ifdef HAVE_VIDEO_DECODER - [_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(AUDC_SET_INPUT)] = "AUDC_SET_INPUT", - [_IOC_NR(MSP_SET_MATRIX)] = "MSP_SET_MATRIX", - - [_IOC_NR(TUNER_SET_TYPE_ADDR)] = "TUNER_SET_TYPE_ADDR", - [_IOC_NR(TUNER_SET_STANDBY)] = "TUNER_SET_STANDBY", - [_IOC_NR(TDA9887_SET_CONFIG)] = "TDA9887_SET_CONFIG", - - [_IOC_NR(VIDIOC_INT_S_REGISTER)] = "VIDIOC_INT_S_REGISTER", - [_IOC_NR(VIDIOC_INT_G_REGISTER)] = "VIDIOC_INT_G_REGISTER", - [_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_G_CHIP_IDENT)] = "VIDIOC_INT_G_CHIP_IDENT", - [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)] = "VIDIOC_INT_I2S_CLOCK_FREQ" -}; -#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; - - 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; - } - switch (_IOC_TYPE(cmd)) { - case 'd': - printk("v4l2_int ioctl %s, dir=%s (0x%08x)\n", - (_IOC_NR(cmd) < V4L2_INT_IOCTLS) ? - v4l2_int_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd); - break; -#ifdef HAVE_V4L1 - case 'v': - printk("v4l1 ioctl %s, dir=%s (0x%08x)\n", - (_IOC_NR(cmd) < V4L1_IOCTLS) ? - v4l1_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd); - break; -#endif - case 'V': - printk("v4l2 ioctl %s, dir=%s (0x%08x)\n", - (_IOC_NR(cmd) < V4L2_IOCTLS) ? - v4l2_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd); - break; - - default: - printk("unknown ioctl '%c', dir=%s, #%d (0x%08x)\n", - _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); - } -} - -/* ----------------------------------------------------------------- */ - -EXPORT_SYMBOL(v4l2_video_std_construct); - -EXPORT_SYMBOL(v4l2_prio_init); -EXPORT_SYMBOL(v4l2_prio_change); -EXPORT_SYMBOL(v4l2_prio_open); -EXPORT_SYMBOL(v4l2_prio_close); -EXPORT_SYMBOL(v4l2_prio_max); -EXPORT_SYMBOL(v4l2_prio_check); - -EXPORT_SYMBOL(v4l2_field_names); -EXPORT_SYMBOL(v4l2_type_names); -EXPORT_SYMBOL(v4l_printk_ioctl); - -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ |