| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Thierry Merle | 5611 | 73.65% | 12 | 12.24% |
| Hans Verkuil | 1166 | 15.31% | 35 | 35.71% |
| Mauro Carvalho Chehab | 193 | 2.53% | 9 | 9.18% |
| Dwaine P. Garden | 148 | 1.94% | 2 | 2.04% |
| Kay Sievers | 101 | 1.33% | 2 | 2.04% |
| Vladis Dronov | 83 | 1.09% | 1 | 1.02% |
| Alan Stern | 79 | 1.04% | 2 | 2.04% |
| Alexey Khoroshilov | 56 | 0.74% | 2 | 2.04% |
| Johan Hovold | 35 | 0.46% | 2 | 2.04% |
| Harvey Harrison | 18 | 0.24% | 1 | 1.02% |
| Laurent Pinchart | 17 | 0.22% | 2 | 2.04% |
| Janne Grunau | 12 | 0.16% | 1 | 1.02% |
| Ondrej Zary | 11 | 0.14% | 1 | 1.02% |
| Trent Piepho | 11 | 0.14% | 3 | 3.06% |
| SF Markus Elfring | 10 | 0.13% | 2 | 2.04% |
| Geliang Tang | 9 | 0.12% | 1 | 1.02% |
| Julia Lawall | 8 | 0.11% | 3 | 3.06% |
| Insu Yun | 8 | 0.11% | 1 | 1.02% |
| Andrew Morton | 7 | 0.09% | 1 | 1.02% |
| Arnd Bergmann | 6 | 0.08% | 1 | 1.02% |
| Dan Carpenter | 5 | 0.07% | 1 | 1.02% |
| Konstantin Khlebnikov | 4 | 0.05% | 1 | 1.02% |
| Joe Perches | 3 | 0.04% | 2 | 2.04% |
| Sakari Ailus | 3 | 0.04% | 1 | 1.02% |
| Matthias Kaehlcke | 3 | 0.04% | 1 | 1.02% |
| Thomas Gleixner | 2 | 0.03% | 1 | 1.02% |
| Kees Cook | 2 | 0.03% | 1 | 1.02% |
| Arjan van de Ven | 2 | 0.03% | 1 | 1.02% |
| Greg Kroah-Hartman | 2 | 0.03% | 2 | 2.04% |
| Adrian Bunk | 1 | 0.01% | 1 | 1.02% |
| Al Viro | 1 | 0.01% | 1 | 1.02% |
| Jean Delvare | 1 | 0.01% | 1 | 1.02% |
| Total | 7618 | 98 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * USB USBVISION Video device driver 0.9.10 * * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de> * * This module is part of usbvision driver project. * * Let's call the version 0.... until compression decoding is completely * implemented. * * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach. * It was based on USB CPiA driver written by Peter Pregler, * Scott J. Bertin and Johannes Erdfelt * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler & * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink * Updates to driver completed by Dwaine P. Garden * * TODO: * - use submit_urb for all setup packets * - Fix memory settings for nt1004. It is 4 times as big as the * nt1003 memory. * - Add audio on endpoint 3 for nt1004 chip. * Seems impossible, needs a codec interface. Which one? * - Clean up the driver. * - optimization for performance. * - Add Videotext capability (VBI). Working on it..... * - Check audio for other devices */ #include <linux/kernel.h> #include <linux/list.h> #include <linux/timer.h> #include <linux/slab.h> #include <linux/mm.h> #include <linux/highmem.h> #include <linux/vmalloc.h> #include <linux/module.h> #include <linux/init.h> #include <linux/spinlock.h> #include <linux/io.h> #include <linux/videodev2.h> #include <linux/i2c.h> #include <media/i2c/saa7115.h> #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-event.h> #include <media/tuner.h> #include <linux/workqueue.h> #include "usbvision.h" #include "usbvision-cards.h" #define DRIVER_AUTHOR \ "Joerg Heckenbach <joerg@heckenbach-aw.de>, " \ "Dwaine Garden <DwaineGarden@rogers.com>" #define DRIVER_NAME "usbvision" #define DRIVER_ALIAS "USBVision" #define DRIVER_DESC "USBVision USB Video Device Driver for Linux" #define USBVISION_VERSION_STRING "0.9.11" #define ENABLE_HEXDUMP 0 /* Enable if you need it */ #ifdef USBVISION_DEBUG #define PDEBUG(level, fmt, args...) { \ if (video_debug & (level)) \ printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \ __func__, __LINE__ , ## args); \ } #else #define PDEBUG(level, fmt, args...) do {} while (0) #endif #define DBG_IO (1 << 1) #define DBG_PROBE (1 << 2) #define DBG_MMAP (1 << 3) /* String operations */ #define rmspace(str) while (*str == ' ') str++; #define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++; /* sequential number of usbvision device */ static int usbvision_nr; static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = { { 1, 1, 8, V4L2_PIX_FMT_GREY }, { 1, 2, 16, V4L2_PIX_FMT_RGB565 }, { 1, 3, 24, V4L2_PIX_FMT_RGB24 }, { 1, 4, 32, V4L2_PIX_FMT_RGB32 }, { 1, 2, 16, V4L2_PIX_FMT_RGB555 }, { 1, 2, 16, V4L2_PIX_FMT_YUYV }, { 1, 2, 12, V4L2_PIX_FMT_YVU420 }, /* 1.5 ! */ { 1, 2, 16, V4L2_PIX_FMT_YUV422P } }; /* Function prototypes */ static void usbvision_release(struct usb_usbvision *usbvision); /* Default initialization of device driver parameters */ /* Set the default format for ISOC endpoint */ static int isoc_mode = ISOC_MODE_COMPRESS; /* Set the default Debug Mode of the device driver */ static int video_debug; /* Sequential Number of Video Device */ static int video_nr = -1; /* Sequential Number of Radio Device */ static int radio_nr = -1; /* Grab parameters for the device driver */ /* Showing parameters under SYSFS */ module_param(isoc_mode, int, 0444); module_param(video_debug, int, 0444); module_param(video_nr, int, 0444); module_param(radio_nr, int, 0444); MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)"); MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)"); MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)"); MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); /* Misc stuff */ MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_VERSION(USBVISION_VERSION_STRING); MODULE_ALIAS(DRIVER_ALIAS); /*****************************************************************************/ /* SYSFS Code - Copied from the stv680.c usb module. */ /* Device information is located at /sys/class/video4linux/video0 */ /* Device parameters information is located at /sys/module/usbvision */ /* Device USB Information is located at */ /* /sys/bus/usb/drivers/USBVision Video Grabber */ /*****************************************************************************/ #define YES_NO(x) ((x) ? "Yes" : "No") static inline struct usb_usbvision *cd_to_usbvision(struct device *cd) { struct video_device *vdev = to_video_device(cd); return video_get_drvdata(vdev); } static ssize_t show_version(struct device *cd, struct device_attribute *attr, char *buf) { return sprintf(buf, "%s\n", USBVISION_VERSION_STRING); } static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); static ssize_t show_model(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); return sprintf(buf, "%s\n", usbvision_device_data[usbvision->dev_model].model_string); } static DEVICE_ATTR(model, S_IRUGO, show_model, NULL); static ssize_t show_hue(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl, V4L2_CID_HUE)); return sprintf(buf, "%d\n", val); } static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); static ssize_t show_contrast(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl, V4L2_CID_CONTRAST)); return sprintf(buf, "%d\n", val); } static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); static ssize_t show_brightness(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl, V4L2_CID_BRIGHTNESS)); return sprintf(buf, "%d\n", val); } static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); static ssize_t show_saturation(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl, V4L2_CID_SATURATION)); return sprintf(buf, "%d\n", val); } static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); static ssize_t show_streaming(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); return sprintf(buf, "%s\n", YES_NO(usbvision->streaming == stream_on ? 1 : 0)); } static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL); static ssize_t show_compression(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); return sprintf(buf, "%s\n", YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS)); } static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL); static ssize_t show_device_bridge(struct device *cd, struct device_attribute *attr, char *buf) { struct video_device *vdev = to_video_device(cd); struct usb_usbvision *usbvision = video_get_drvdata(vdev); return sprintf(buf, "%d\n", usbvision->bridge_type); } static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL); static void usbvision_create_sysfs(struct video_device *vdev) { int res; if (!vdev) return; do { res = device_create_file(&vdev->dev, &dev_attr_version); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_model); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_hue); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_contrast); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_brightness); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_saturation); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_streaming); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_compression); if (res < 0) break; res = device_create_file(&vdev->dev, &dev_attr_bridge); if (res >= 0) return; } while (0); dev_err(&vdev->dev, "%s error: %d\n", __func__, res); } static void usbvision_remove_sysfs(struct video_device *vdev) { if (vdev) { device_remove_file(&vdev->dev, &dev_attr_version); device_remove_file(&vdev->dev, &dev_attr_model); device_remove_file(&vdev->dev, &dev_attr_hue); device_remove_file(&vdev->dev, &dev_attr_contrast); device_remove_file(&vdev->dev, &dev_attr_brightness); device_remove_file(&vdev->dev, &dev_attr_saturation); device_remove_file(&vdev->dev, &dev_attr_streaming); device_remove_file(&vdev->dev, &dev_attr_compression); device_remove_file(&vdev->dev, &dev_attr_bridge); } } /* * usbvision_open() * * This is part of Video 4 Linux API. The driver can be opened by one * client only (checks internal counter 'usbvision->user'). The procedure * then allocates buffers needed for video processing. * */ static int usbvision_v4l2_open(struct file *file) { struct usb_usbvision *usbvision = video_drvdata(file); int err_code = 0; PDEBUG(DBG_IO, "open"); if (mutex_lock_interruptible(&usbvision->v4l2_lock)) return -ERESTARTSYS; if (usbvision->remove_pending) { err_code = -ENODEV; goto unlock; } if (usbvision->user) { err_code = -EBUSY; } else { err_code = v4l2_fh_open(file); if (err_code) goto unlock; /* Allocate memory for the scratch ring buffer */ err_code = usbvision_scratch_alloc(usbvision); if (isoc_mode == ISOC_MODE_COMPRESS) { /* Allocate intermediate decompression buffers only if needed */ err_code = usbvision_decompress_alloc(usbvision); } if (err_code) { /* Deallocate all buffers if trouble */ usbvision_scratch_free(usbvision); usbvision_decompress_free(usbvision); } } /* If so far no errors then we shall start the camera */ if (!err_code) { /* Send init sequence only once, it's large! */ if (!usbvision->initialized) { int setup_ok = 0; setup_ok = usbvision_setup(usbvision, isoc_mode); if (setup_ok) usbvision->initialized = 1; else err_code = -EBUSY; } if (!err_code) { usbvision_begin_streaming(usbvision); err_code = usbvision_init_isoc(usbvision); /* device must be initialized before isoc transfer */ usbvision_muxsel(usbvision, 0); /* prepare queues */ usbvision_empty_framequeues(usbvision); usbvision->user++; } } unlock: mutex_unlock(&usbvision->v4l2_lock); PDEBUG(DBG_IO, "success"); return err_code; } /* * usbvision_v4l2_close() * * This is part of Video 4 Linux API. The procedure * stops streaming and deallocates all buffers that were earlier * allocated in usbvision_v4l2_open(). * */ static int usbvision_v4l2_close(struct file *file) { struct usb_usbvision *usbvision = video_drvdata(file); int r; PDEBUG(DBG_IO, "close"); mutex_lock(&usbvision->v4l2_lock); usbvision_audio_off(usbvision); usbvision_restart_isoc(usbvision); usbvision_stop_isoc(usbvision); usbvision_decompress_free(usbvision); usbvision_frames_free(usbvision); usbvision_empty_framequeues(usbvision); usbvision_scratch_free(usbvision); usbvision->user--; r = usbvision->remove_pending; mutex_unlock(&usbvision->v4l2_lock); if (r) { printk(KERN_INFO "%s: Final disconnect\n", __func__); usbvision_release(usbvision); return 0; } PDEBUG(DBG_IO, "success"); return v4l2_fh_release(file); } /* * usbvision_ioctl() * * This is part of Video 4 Linux API. The procedure handles ioctl() calls. * */ #ifdef CONFIG_VIDEO_ADV_DEBUG static int vidioc_g_register(struct file *file, void *priv, struct v4l2_dbg_register *reg) { struct usb_usbvision *usbvision = video_drvdata(file); int err_code; /* NT100x has a 8-bit register space */ err_code = usbvision_read_reg(usbvision, reg->reg&0xff); if (err_code < 0) { dev_err(&usbvision->vdev.dev, "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n", __func__, err_code); return err_code; } reg->val = err_code; reg->size = 1; return 0; } static int vidioc_s_register(struct file *file, void *priv, const struct v4l2_dbg_register *reg) { struct usb_usbvision *usbvision = video_drvdata(file); int err_code; /* NT100x has a 8-bit register space */ err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val); if (err_code < 0) { dev_err(&usbvision->vdev.dev, "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n", __func__, err_code); return err_code; } return 0; } #endif static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *vc) { struct usb_usbvision *usbvision = video_drvdata(file); if (!usbvision->dev) return -ENODEV; strscpy(vc->driver, "USBVision", sizeof(vc->driver)); strscpy(vc->card, usbvision_device_data[usbvision->dev_model].model_string, sizeof(vc->card)); usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info)); vc->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; if (usbvision_device_data[usbvision->dev_model].radio) vc->capabilities |= V4L2_CAP_RADIO; if (usbvision->have_tuner) vc->capabilities |= V4L2_CAP_TUNER; return 0; } static int vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *vi) { struct usb_usbvision *usbvision = video_drvdata(file); int chan; if (vi->index >= usbvision->video_inputs) return -EINVAL; if (usbvision->have_tuner) chan = vi->index; else chan = vi->index + 1; /* skip Television string*/ /* Determine the requested input characteristics specific for each usbvision card model */ switch (chan) { case 0: if (usbvision_device_data[usbvision->dev_model].video_channels == 4) { strscpy(vi->name, "White Video Input", sizeof(vi->name)); } else { strscpy(vi->name, "Television", sizeof(vi->name)); vi->type = V4L2_INPUT_TYPE_TUNER; vi->tuner = chan; vi->std = USBVISION_NORMS; } break; case 1: vi->type = V4L2_INPUT_TYPE_CAMERA; if (usbvision_device_data[usbvision->dev_model].video_channels == 4) strscpy(vi->name, "Green Video Input", sizeof(vi->name)); else strscpy(vi->name, "Composite Video Input", sizeof(vi->name)); vi->std = USBVISION_NORMS; break; case 2: vi->type = V4L2_INPUT_TYPE_CAMERA; if (usbvision_device_data[usbvision->dev_model].video_channels == 4) strscpy(vi->name, "Yellow Video Input", sizeof(vi->name)); else strscpy(vi->name, "S-Video Input", sizeof(vi->name)); vi->std = USBVISION_NORMS; break; case 3: vi->type = V4L2_INPUT_TYPE_CAMERA; strscpy(vi->name, "Red Video Input", sizeof(vi->name)); vi->std = USBVISION_NORMS; break; } return 0; } static int vidioc_g_input(struct file *file, void *priv, unsigned int *input) { struct usb_usbvision *usbvision = video_drvdata(file); *input = usbvision->ctl_input; return 0; } static int vidioc_s_input(struct file *file, void *priv, unsigned int input) { struct usb_usbvision *usbvision = video_drvdata(file); if (input >= usbvision->video_inputs) return -EINVAL; usbvision_muxsel(usbvision, input); usbvision_set_input(usbvision); usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight); return 0; } static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id) { struct usb_usbvision *usbvision = video_drvdata(file); usbvision->tvnorm_id = id; call_all(usbvision, video, s_std, usbvision->tvnorm_id); /* propagate the change to the decoder */ usbvision_muxsel(usbvision, usbvision->ctl_input); return 0; } static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) { struct usb_usbvision *usbvision = video_drvdata(file); *id = usbvision->tvnorm_id; return 0; } static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt) { struct usb_usbvision *usbvision = video_drvdata(file); if (vt->index) /* Only tuner 0 */ return -EINVAL; if (vt->type == V4L2_TUNER_RADIO) strscpy(vt->name, "Radio", sizeof(vt->name)); else strscpy(vt->name, "Television", sizeof(vt->name)); /* Let clients fill in the remainder of this struct */ call_all(usbvision, tuner, g_tuner, vt); return 0; } static int vidioc_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *vt) { struct usb_usbvision *usbvision = video_drvdata(file); /* Only one tuner for now */ if (vt->index) return -EINVAL; /* let clients handle this */ call_all(usbvision, tuner, s_tuner, vt); return 0; } static int vidioc_g_frequency(struct file *file, void *priv, struct v4l2_frequency *freq) { struct usb_usbvision *usbvision = video_drvdata(file); /* Only one tuner */ if (freq->tuner) return -EINVAL; if (freq->type == V4L2_TUNER_RADIO) freq->frequency = usbvision->radio_freq; else freq->frequency = usbvision->tv_freq; return 0; } static int vidioc_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *freq) { struct usb_usbvision *usbvision = video_drvdata(file); struct v4l2_frequency new_freq = *freq; /* Only one tuner for now */ if (freq->tuner) return -EINVAL; call_all(usbvision, tuner, s_frequency, freq); call_all(usbvision, tuner, g_frequency, &new_freq); if (freq->type == V4L2_TUNER_RADIO) usbvision->radio_freq = new_freq.frequency; else usbvision->tv_freq = new_freq.frequency; return 0; } static int vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *vr) { struct usb_usbvision *usbvision = video_drvdata(file); int ret; RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES); /* Check input validity: the user must do a VIDEO CAPTURE and MMAP method. */ if (vr->memory != V4L2_MEMORY_MMAP) return -EINVAL; if (usbvision->streaming == stream_on) { ret = usbvision_stream_interrupt(usbvision); if (ret) return ret; } usbvision_frames_free(usbvision); usbvision_empty_framequeues(usbvision); vr->count = usbvision_frames_alloc(usbvision, vr->count); usbvision->cur_frame = NULL; return 0; } static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *vb) { struct usb_usbvision *usbvision = video_drvdata(file); struct usbvision_frame *frame; /* FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called) */ if (vb->index >= usbvision->num_frames) return -EINVAL; /* Updating the corresponding frame state */ vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; frame = &usbvision->frame[vb->index]; if (frame->grabstate >= frame_state_ready) vb->flags |= V4L2_BUF_FLAG_QUEUED; if (frame->grabstate >= frame_state_done) vb->flags |= V4L2_BUF_FLAG_DONE; if (frame->grabstate == frame_state_unused) vb->flags |= V4L2_BUF_FLAG_MAPPED; vb->memory = V4L2_MEMORY_MMAP; vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size); vb->memory = V4L2_MEMORY_MMAP; vb->field = V4L2_FIELD_NONE; vb->length = usbvision->curwidth * usbvision->curheight * usbvision->palette.bytes_per_pixel; v4l2_buffer_set_timestamp(vb, usbvision->frame[vb->index].ts); vb->sequence = usbvision->frame[vb->index].sequence; return 0; } static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb) { struct usb_usbvision *usbvision = video_drvdata(file); struct usbvision_frame *frame; unsigned long lock_flags; /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */ if (vb->index >= usbvision->num_frames) return -EINVAL; frame = &usbvision->frame[vb->index]; if (frame->grabstate != frame_state_unused) return -EAGAIN; /* Mark it as ready and enqueue frame */ frame->grabstate = frame_state_ready; frame->scanstate = scan_state_scanning; frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */ vb->flags &= ~V4L2_BUF_FLAG_DONE; /* set v4l2_format index */ frame->v4l2_format = usbvision->palette; spin_lock_irqsave(&usbvision->queue_lock, lock_flags); list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue); spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); return 0; } static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb) { struct usb_usbvision *usbvision = video_drvdata(file); int ret; struct usbvision_frame *f; unsigned long lock_flags; if (list_empty(&(usbvision->outqueue))) { if (usbvision->streaming == stream_idle) return -EINVAL; ret = wait_event_interruptible (usbvision->wait_frame, !list_empty(&(usbvision->outqueue))); if (ret) return ret; } spin_lock_irqsave(&usbvision->queue_lock, lock_flags); f = list_entry(usbvision->outqueue.next, struct usbvision_frame, frame); list_del(usbvision->outqueue.next); spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); f->grabstate = frame_state_unused; vb->memory = V4L2_MEMORY_MMAP; vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; vb->index = f->index; vb->sequence = f->sequence; v4l2_buffer_set_timestamp(vb, f->ts); vb->field = V4L2_FIELD_NONE; vb->bytesused = f->scanlength; return 0; } static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) { struct usb_usbvision *usbvision = video_drvdata(file); usbvision->streaming = stream_on; call_all(usbvision, video, s_stream, 1); return 0; } static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct usb_usbvision *usbvision = video_drvdata(file); if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (usbvision->streaming == stream_on) { usbvision_stream_interrupt(usbvision); /* Stop all video streamings */ call_all(usbvision, video, s_stream, 0); } usbvision_empty_framequeues(usbvision); return 0; } static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *vfd) { if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1) return -EINVAL; vfd->pixelformat = usbvision_v4l2_format[vfd->index].format; return 0; } static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf) { struct usb_usbvision *usbvision = video_drvdata(file); vf->fmt.pix.width = usbvision->curwidth; vf->fmt.pix.height = usbvision->curheight; vf->fmt.pix.pixelformat = usbvision->palette.format; vf->fmt.pix.bytesperline = usbvision->curwidth * usbvision->palette.bytes_per_pixel; vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight; vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */ return 0; } static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf) { struct usb_usbvision *usbvision = video_drvdata(file); int format_idx; /* Find requested format in available ones */ for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) { if (vf->fmt.pix.pixelformat == usbvision_v4l2_format[format_idx].format) { usbvision->palette = usbvision_v4l2_format[format_idx]; break; } } /* robustness */ if (format_idx == USBVISION_SUPPORTED_PALETTES) return -EINVAL; RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH); RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT); vf->fmt.pix.bytesperline = vf->fmt.pix.width* usbvision->palette.bytes_per_pixel; vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height; vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */ return 0; } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf) { struct usb_usbvision *usbvision = video_drvdata(file); int ret; ret = vidioc_try_fmt_vid_cap(file, priv, vf); if (ret) return ret; /* stop io in case it is already in progress */ if (usbvision->streaming == stream_on) { ret = usbvision_stream_interrupt(usbvision); if (ret) return ret; } usbvision_frames_free(usbvision); usbvision_empty_framequeues(usbvision); usbvision->cur_frame = NULL; /* by now we are committed to the new data... */ usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height); return 0; } static ssize_t usbvision_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct usb_usbvision *usbvision = video_drvdata(file); int noblock = file->f_flags & O_NONBLOCK; unsigned long lock_flags; int ret, i; struct usbvision_frame *frame; PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__, (unsigned long)count, noblock); if (!USBVISION_IS_OPERATIONAL(usbvision) || !buf) return -EFAULT; /* This entry point is compatible with the mmap routines so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF to get frames or call read on the device. */ if (!usbvision->num_frames) { /* First, allocate some frames to work with if this has not been done with VIDIOC_REQBUF */ usbvision_frames_free(usbvision); usbvision_empty_framequeues(usbvision); usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES); } if (usbvision->streaming != stream_on) { /* no stream is running, make it running ! */ usbvision->streaming = stream_on; call_all(usbvision, video, s_stream, 1); } /* Then, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */ for (i = 0; i < usbvision->num_frames; i++) { frame = &usbvision->frame[i]; if (frame->grabstate == frame_state_unused) { /* Mark it as ready and enqueue frame */ frame->grabstate = frame_state_ready; frame->scanstate = scan_state_scanning; /* Accumulated in usbvision_parse_data() */ frame->scanlength = 0; /* set v4l2_format index */ frame->v4l2_format = usbvision->palette; spin_lock_irqsave(&usbvision->queue_lock, lock_flags); list_add_tail(&frame->frame, &usbvision->inqueue); spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); } } /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */ if (list_empty(&(usbvision->outqueue))) { if (noblock) return -EAGAIN; ret = wait_event_interruptible (usbvision->wait_frame, !list_empty(&(usbvision->outqueue))); if (ret) return ret; } spin_lock_irqsave(&usbvision->queue_lock, lock_flags); frame = list_entry(usbvision->outqueue.next, struct usbvision_frame, frame); list_del(usbvision->outqueue.next); spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); /* An error returns an empty frame */ if (frame->grabstate == frame_state_error) { frame->bytes_read = 0; return 0; } PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __func__, frame->index, frame->bytes_read, frame->scanlength); /* copy bytes to user space; we allow for partials reads */ if ((count + frame->bytes_read) > (unsigned long)frame->scanlength) count = frame->scanlength - frame->bytes_read; if (copy_to_user(buf, frame->data + frame->bytes_read, count)) return -EFAULT; frame->bytes_read += count; PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __func__, (unsigned long)count, frame->bytes_read); /* * FIXME: * For now, forget the frame if it has not been read in one shot. */ frame->bytes_read = 0; /* Mark it as available to be used again. */ frame->grabstate = frame_state_unused; return count; } static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct usb_usbvision *usbvision = video_drvdata(file); int res; if (mutex_lock_interruptible(&usbvision->v4l2_lock)) return -ERESTARTSYS; res = usbvision_read(file, buf, count, ppos); mutex_unlock(&usbvision->v4l2_lock); return res; } static int usbvision_mmap(struct file *file, struct vm_area_struct *vma) { unsigned long size = vma->vm_end - vma->vm_start, start = vma->vm_start; void *pos; u32 i; struct usb_usbvision *usbvision = video_drvdata(file); PDEBUG(DBG_MMAP, "mmap"); if (!USBVISION_IS_OPERATIONAL(usbvision)) return -EFAULT; if (!(vma->vm_flags & VM_WRITE) || size != PAGE_ALIGN(usbvision->max_frame_size)) { return -EINVAL; } for (i = 0; i < usbvision->num_frames; i++) { if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == vma->vm_pgoff) break; } if (i == usbvision->num_frames) { PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range"); return -EINVAL; } /* VM_IO is eventually going to replace PageReserved altogether */ vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; pos = usbvision->frame[i].data; while (size > 0) { if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed"); return -EAGAIN; } start += PAGE_SIZE; pos += PAGE_SIZE; size -= PAGE_SIZE; } return 0; } static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) { struct usb_usbvision *usbvision = video_drvdata(file); int res; if (mutex_lock_interruptible(&usbvision->v4l2_lock)) return -ERESTARTSYS; res = usbvision_mmap(file, vma); mutex_unlock(&usbvision->v4l2_lock); return res; } /* * Here comes the stuff for radio on usbvision based devices * */ static int usbvision_radio_open(struct file *file) { struct usb_usbvision *usbvision = video_drvdata(file); int err_code = 0; PDEBUG(DBG_IO, "%s:", __func__); if (mutex_lock_interruptible(&usbvision->v4l2_lock)) return -ERESTARTSYS; if (usbvision->remove_pending) { err_code = -ENODEV; goto out; } err_code = v4l2_fh_open(file); if (err_code) goto out; if (usbvision->user) { dev_err(&usbvision->rdev.dev, "%s: Someone tried to open an already opened USBVision Radio!\n", __func__); err_code = -EBUSY; } else { /* Alternate interface 1 is is the biggest frame size */ err_code = usbvision_set_alternate(usbvision); if (err_code < 0) { usbvision->last_error = err_code; err_code = -EBUSY; goto out; } /* If so far no errors then we shall start the radio */ usbvision->radio = 1; call_all(usbvision, tuner, s_radio); usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO); usbvision->user++; } out: mutex_unlock(&usbvision->v4l2_lock); return err_code; } static int usbvision_radio_close(struct file *file) { struct usb_usbvision *usbvision = video_drvdata(file); int r; PDEBUG(DBG_IO, ""); mutex_lock(&usbvision->v4l2_lock); /* Set packet size to 0 */ usbvision->iface_alt = 0; if (usbvision->dev) usb_set_interface(usbvision->dev, usbvision->iface, usbvision->iface_alt); usbvision_audio_off(usbvision); usbvision->radio = 0; usbvision->user--; r = usbvision->remove_pending; mutex_unlock(&usbvision->v4l2_lock); if (r) { printk(KERN_INFO "%s: Final disconnect\n", __func__); v4l2_fh_release(file); usbvision_release(usbvision); return 0; } PDEBUG(DBG_IO, "success"); return v4l2_fh_release(file); } /* Video registration stuff */ /* Video template */ static const struct v4l2_file_operations usbvision_fops = { .owner = THIS_MODULE, .open = usbvision_v4l2_open, .release = usbvision_v4l2_close, .read = usbvision_v4l2_read, .mmap = usbvision_v4l2_mmap, .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops usbvision_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_s_std = vidioc_s_std, .vidioc_g_std = vidioc_g_std, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, #endif }; static struct video_device usbvision_video_template = { .fops = &usbvision_fops, .ioctl_ops = &usbvision_ioctl_ops, .name = "usbvision-video", .release = video_device_release_empty, .tvnorms = USBVISION_NORMS, }; /* Radio template */ static const struct v4l2_file_operations usbvision_radio_fops = { .owner = THIS_MODULE, .open = usbvision_radio_open, .release = usbvision_radio_close, .poll = v4l2_ctrl_poll, .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static struct video_device usbvision_radio_template = { .fops = &usbvision_radio_fops, .name = "usbvision-radio", .release = video_device_release_empty, .ioctl_ops = &usbvision_radio_ioctl_ops, }; static void usbvision_vdev_init(struct usb_usbvision *usbvision, struct video_device *vdev, const struct video_device *vdev_template, const char *name) { struct usb_device *usb_dev = usbvision->dev; if (!usb_dev) { dev_err(&usbvision->dev->dev, "%s: usbvision->dev is not set\n", __func__); return; } *vdev = *vdev_template; vdev->lock = &usbvision->v4l2_lock; vdev->v4l2_dev = &usbvision->v4l2_dev; snprintf(vdev->name, sizeof(vdev->name), "%s", name); video_set_drvdata(vdev, usbvision); } /* unregister video4linux devices */ static void usbvision_unregister_video(struct usb_usbvision *usbvision) { /* Radio Device: */ if (video_is_registered(&usbvision->rdev)) { PDEBUG(DBG_PROBE, "unregister %s [v4l2]", video_device_node_name(&usbvision->rdev)); video_unregister_device(&usbvision->rdev); } /* Video Device: */ if (video_is_registered(&usbvision->vdev)) { PDEBUG(DBG_PROBE, "unregister %s [v4l2]", video_device_node_name(&usbvision->vdev)); video_unregister_device(&usbvision->vdev); } } /* register video4linux devices */ static int usbvision_register_video(struct usb_usbvision *usbvision) { int res = -ENOMEM; /* Video Device: */ usbvision_vdev_init(usbvision, &usbvision->vdev, &usbvision_video_template, "USBVision Video"); if (!usbvision->have_tuner) { v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY); v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER); v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY); v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER); } usbvision->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; if (usbvision->have_tuner) usbvision->vdev.device_caps |= V4L2_CAP_TUNER; if (video_register_device(&usbvision->vdev, VFL_TYPE_VIDEO, video_nr) < 0) goto err_exit; printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n", usbvision->nr, video_device_node_name(&usbvision->vdev)); /* Radio Device: */ if (usbvision_device_data[usbvision->dev_model].radio) { /* usbvision has radio */ usbvision_vdev_init(usbvision, &usbvision->rdev, &usbvision_radio_template, "USBVision Radio"); usbvision->rdev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER; if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0) goto err_exit; printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n", usbvision->nr, video_device_node_name(&usbvision->rdev)); } /* all done */ return 0; err_exit: dev_err(&usbvision->dev->dev, "USBVision[%d]: video_register_device() failed\n", usbvision->nr); usbvision_unregister_video(usbvision); return res; } /* * usbvision_alloc() * * This code allocates the struct usb_usbvision. * It is filled with default values. * * Returns NULL on error, a pointer to usb_usbvision else. * */ static struct usb_usbvision *usbvision_alloc(struct usb_device *dev, struct usb_interface *intf) { struct usb_usbvision *usbvision; usbvision = kzalloc(sizeof(*usbvision), GFP_KERNEL); if (!usbvision) return NULL; usbvision->dev = dev; if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev)) goto err_free; if (v4l2_ctrl_handler_init(&usbvision->hdl, 4)) goto err_unreg; usbvision->v4l2_dev.ctrl_handler = &usbvision->hdl; mutex_init(&usbvision->v4l2_lock); /* prepare control urb for control messages during interrupts */ usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); if (!usbvision->ctrl_urb) goto err_unreg; return usbvision; err_unreg: v4l2_ctrl_handler_free(&usbvision->hdl); v4l2_device_unregister(&usbvision->v4l2_dev); err_free: kfree(usbvision); return NULL; } /* * usbvision_release() * * This code does final release of struct usb_usbvision. This happens * after the device is disconnected -and- all clients closed their files. * */ static void usbvision_release(struct usb_usbvision *usbvision) { PDEBUG(DBG_PROBE, ""); usbvision->initialized = 0; usbvision_remove_sysfs(&usbvision->vdev); usbvision_unregister_video(usbvision); kfree(usbvision->alt_max_pkt_size); usb_free_urb(usbvision->ctrl_urb); v4l2_ctrl_handler_free(&usbvision->hdl); v4l2_device_unregister(&usbvision->v4l2_dev); kfree(usbvision); PDEBUG(DBG_PROBE, "success"); } /*********************** usb interface **********************************/ static void usbvision_configure_video(struct usb_usbvision *usbvision) { int model; if (!usbvision) return; model = usbvision->dev_model; usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */ if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) { usbvision->vin_reg2_preset = usbvision_device_data[usbvision->dev_model].vin_reg2; } else { usbvision->vin_reg2_preset = 0; } usbvision->tvnorm_id = usbvision_device_data[model].video_norm; usbvision->video_inputs = usbvision_device_data[model].video_channels; usbvision->ctl_input = 0; usbvision->radio_freq = 87.5 * 16000; usbvision->tv_freq = 400 * 16; /* This should be here to make i2c clients to be able to register */ /* first switch off audio */ if (usbvision_device_data[model].audio_channels > 0) usbvision_audio_off(usbvision); /* and then power up the tuner */ usbvision_power_on(usbvision); usbvision_i2c_register(usbvision); } /* * usbvision_probe() * * This procedure queries device descriptor and accepts the interface * if it looks like USBVISION video device * */ static int usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid) { struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf)); struct usb_interface *uif; __u8 ifnum = intf->altsetting->desc.bInterfaceNumber; const struct usb_host_interface *interface; struct usb_usbvision *usbvision = NULL; const struct usb_endpoint_descriptor *endpoint; int model, i, ret; PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u", le16_to_cpu(dev->descriptor.idVendor), le16_to_cpu(dev->descriptor.idProduct), ifnum); model = devid->driver_info; if (model < 0 || model >= usbvision_device_data_size) { PDEBUG(DBG_PROBE, "model out of bounds %d", model); ret = -ENODEV; goto err_usb; } printk(KERN_INFO "%s: %s found\n", __func__, usbvision_device_data[model].model_string); if (usbvision_device_data[model].interface >= 0) interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0]; else if (ifnum < dev->actconfig->desc.bNumInterfaces) interface = &dev->actconfig->interface[ifnum]->altsetting[0]; else { dev_err(&intf->dev, "interface %d is invalid, max is %d\n", ifnum, dev->actconfig->desc.bNumInterfaces - 1); ret = -ENODEV; goto err_usb; } if (interface->desc.bNumEndpoints < 2) { dev_err(&intf->dev, "interface %d has %d endpoints, but must have minimum 2\n", ifnum, interface->desc.bNumEndpoints); ret = -ENODEV; goto err_usb; } endpoint = &interface->endpoint[1].desc; if (!usb_endpoint_xfer_isoc(endpoint)) { dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n", __func__, ifnum); dev_err(&intf->dev, "%s: Endpoint attributes %d", __func__, endpoint->bmAttributes); ret = -ENODEV; goto err_usb; } if (usb_endpoint_dir_out(endpoint)) { dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n", __func__, ifnum); ret = -ENODEV; goto err_usb; } usbvision = usbvision_alloc(dev, intf); if (!usbvision) { dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__); ret = -ENOMEM; goto err_usb; } if (dev->descriptor.bNumConfigurations > 1) usbvision->bridge_type = BRIDGE_NT1004; else if (model == DAZZLE_DVC_90_REV_1_SECAM) usbvision->bridge_type = BRIDGE_NT1005; else usbvision->bridge_type = BRIDGE_NT1003; PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type); /* compute alternate max packet sizes */ uif = dev->actconfig->interface[0]; usbvision->num_alt = uif->num_altsetting; PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt); usbvision->alt_max_pkt_size = kmalloc_array(32, usbvision->num_alt, GFP_KERNEL); if (!usbvision->alt_max_pkt_size) { ret = -ENOMEM; goto err_pkt; } for (i = 0; i < usbvision->num_alt; i++) { u16 tmp; if (uif->altsetting[i].desc.bNumEndpoints < 2) { ret = -ENODEV; goto err_pkt; } tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. wMaxPacketSize); usbvision->alt_max_pkt_size[i] = (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i, usbvision->alt_max_pkt_size[i]); } usbvision->nr = usbvision_nr++; spin_lock_init(&usbvision->queue_lock); init_waitqueue_head(&usbvision->wait_frame); init_waitqueue_head(&usbvision->wait_stream); usbvision->have_tuner = usbvision_device_data[model].tuner; if (usbvision->have_tuner) usbvision->tuner_type = usbvision_device_data[model].tuner_type; usbvision->dev_model = model; usbvision->remove_pending = 0; usbvision->iface = ifnum; usbvision->iface_alt = 0; usbvision->video_endp = endpoint->bEndpointAddress; usbvision->isoc_packet_size = 0; usbvision->usb_bandwidth = 0; usbvision->user = 0; usbvision->streaming = stream_off; usbvision_configure_video(usbvision); usbvision_register_video(usbvision); usbvision_create_sysfs(&usbvision->vdev); PDEBUG(DBG_PROBE, "success"); return 0; err_pkt: usbvision_release(usbvision); err_usb: usb_put_dev(dev); return ret; } /* * usbvision_disconnect() * * This procedure stops all driver activity, deallocates interface-private * structure (pointed by 'ptr') and after that driver should be removable * with no ill consequences. * */ static void usbvision_disconnect(struct usb_interface *intf) { struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf)); int u; PDEBUG(DBG_PROBE, ""); if (!usbvision) { pr_err("%s: usb_get_intfdata() failed\n", __func__); return; } mutex_lock(&usbvision->v4l2_lock); /* At this time we ask to cancel outstanding URBs */ usbvision_stop_isoc(usbvision); v4l2_device_disconnect(&usbvision->v4l2_dev); usbvision_i2c_unregister(usbvision); usbvision->remove_pending = 1; /* Now all ISO data will be ignored */ u = usbvision->user; usb_put_dev(usbvision->dev); usbvision->dev = NULL; /* USB device is no more */ mutex_unlock(&usbvision->v4l2_lock); if (u) { printk(KERN_INFO "%s: In use, disconnect pending\n", __func__); wake_up_interruptible(&usbvision->wait_frame); wake_up_interruptible(&usbvision->wait_stream); } else { usbvision_release(usbvision); } PDEBUG(DBG_PROBE, "success"); } static struct usb_driver usbvision_driver = { .name = "usbvision", .id_table = usbvision_table, .probe = usbvision_probe, .disconnect = usbvision_disconnect, }; /* * usbvision_init() * * This code is run to initialize the driver. * */ static int __init usbvision_init(void) { int err_code; PDEBUG(DBG_PROBE, ""); PDEBUG(DBG_IO, "IO debugging is enabled [video]"); PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]"); PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]"); /* disable planar mode support unless compression enabled */ if (isoc_mode != ISOC_MODE_COMPRESS) { /* FIXME : not the right way to set supported flag */ usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */ usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */ } err_code = usb_register(&usbvision_driver); if (err_code == 0) { printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n"); PDEBUG(DBG_PROBE, "success"); } return err_code; } static void __exit usbvision_exit(void) { PDEBUG(DBG_PROBE, ""); usb_deregister(&usbvision_driver); PDEBUG(DBG_PROBE, "success"); } module_init(usbvision_init); module_exit(usbvision_exit);
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