| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lamarque Vieira Souza | 4433 | 49.96% | 3 | 5.45% |
| Antoine Jacquet | 3235 | 36.46% | 10 | 18.18% |
| Hans Verkuil | 1004 | 11.32% | 15 | 27.27% |
| Greg Kroah-Hartman | 61 | 0.69% | 2 | 3.64% |
| Alyssa Milburn | 33 | 0.37% | 1 | 1.82% |
| Mauro Carvalho Chehab | 24 | 0.27% | 6 | 10.91% |
| Akinobu Mita | 16 | 0.18% | 1 | 1.82% |
| Colin Ian King | 13 | 0.15% | 1 | 1.82% |
| SF Markus Elfring | 12 | 0.14% | 3 | 5.45% |
| Andreas Bombe | 11 | 0.12% | 1 | 1.82% |
| Vandana BN | 8 | 0.09% | 1 | 1.82% |
| Laurent Pinchart | 4 | 0.05% | 1 | 1.82% |
| Trent Piepho | 4 | 0.05% | 1 | 1.82% |
| Fuqian Huang | 3 | 0.03% | 1 | 1.82% |
| Roel Kluin | 3 | 0.03% | 1 | 1.82% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.82% |
| Julia Lawall | 2 | 0.02% | 2 | 3.64% |
| Al Viro | 2 | 0.02% | 1 | 1.82% |
| Bhumika Goyal | 1 | 0.01% | 1 | 1.82% |
| Douglas Schilling Landgraf | 1 | 0.01% | 1 | 1.82% |
| Arvind Yadav | 1 | 0.01% | 1 | 1.82% |
| Total | 8873 | 55 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Zoran 364xx based USB webcam module version 0.73 * * Allows you to use your USB webcam with V4L2 applications * This is still in heavy development ! * * Copyright (C) 2004 Antoine Jacquet <royale@zerezo.com> * http://royale.zerezo.com/zr364xx/ * * Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers * V4L2 version inspired by meye.c driver * * Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers. */ #include <linux/module.h> #include <linux/init.h> #include <linux/usb.h> #include <linux/vmalloc.h> #include <linux/slab.h> #include <linux/highmem.h> #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-device.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-fh.h> #include <media/v4l2-event.h> #include <media/videobuf-vmalloc.h> /* Version Information */ #define DRIVER_VERSION "0.7.4" #define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/" #define DRIVER_DESC "Zoran 364xx" /* Camera */ #define FRAMES 1 #define MAX_FRAME_SIZE 200000 #define BUFFER_SIZE 0x1000 #define CTRL_TIMEOUT 500 #define ZR364XX_DEF_BUFS 4 #define ZR364XX_READ_IDLE 0 #define ZR364XX_READ_FRAME 1 /* Debug macro */ #define DBG(fmt, args...) \ do { \ if (debug) { \ printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \ } \ } while (0) /*#define FULL_DEBUG 1*/ #ifdef FULL_DEBUG #define _DBG DBG #else #define _DBG(fmt, args...) #endif /* Init methods, need to find nicer names for these * the exact names of the chipsets would be the best if someone finds it */ #define METHOD0 0 #define METHOD1 1 #define METHOD2 2 #define METHOD3 3 /* Module parameters */ static int debug; static int mode; /* Module parameters interface */ module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Debug level"); module_param(mode, int, 0644); MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480"); /* Devices supported by this driver * .driver_info contains the init method used by the camera */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 }, {USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 }, {USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 }, {USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 }, {USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 }, {USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 }, {USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 }, {USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 }, {USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 }, {USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 }, {USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 }, {USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 }, {USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 }, {USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 }, {USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 }, {USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 }, {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 }, {USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 }, {USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 }, {USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 }, {USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 }, {} /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, device_table); /* frame structure */ struct zr364xx_framei { unsigned long ulState; /* ulState:ZR364XX_READ_IDLE, ZR364XX_READ_FRAME */ void *lpvbits; /* image data */ unsigned long cur_size; /* current data copied to it */ }; /* image buffer structure */ struct zr364xx_bufferi { unsigned long dwFrames; /* number of frames in buffer */ struct zr364xx_framei frame[FRAMES]; /* array of FRAME structures */ }; struct zr364xx_dmaqueue { struct list_head active; struct zr364xx_camera *cam; }; struct zr364xx_pipeinfo { u32 transfer_size; u8 *transfer_buffer; u32 state; void *stream_urb; void *cam; /* back pointer to zr364xx_camera struct */ u32 err_count; u32 idx; }; struct zr364xx_fmt { u32 fourcc; int depth; }; /* image formats. */ static const struct zr364xx_fmt formats[] = { { .fourcc = V4L2_PIX_FMT_JPEG, .depth = 24 } }; /* Camera stuff */ struct zr364xx_camera { struct usb_device *udev; /* save off the usb device pointer */ struct usb_interface *interface;/* the interface for this device */ struct v4l2_device v4l2_dev; struct v4l2_ctrl_handler ctrl_handler; struct video_device vdev; /* v4l video device */ struct v4l2_fh *owner; /* owns the streaming */ int nb; struct zr364xx_bufferi buffer; int skip; int width; int height; int method; struct mutex lock; spinlock_t slock; struct zr364xx_dmaqueue vidq; int last_frame; int cur_frame; unsigned long frame_count; int b_acquire; struct zr364xx_pipeinfo pipe[1]; u8 read_endpoint; const struct zr364xx_fmt *fmt; struct videobuf_queue vb_vidq; bool was_streaming; }; /* buffer for one video frame */ struct zr364xx_buffer { /* common v4l buffer stuff -- must be first */ struct videobuf_buffer vb; const struct zr364xx_fmt *fmt; }; /* function used to send initialisation commands to the camera */ static int send_control_msg(struct usb_device *udev, u8 request, u16 value, u16 index, unsigned char *cp, u16 size) { int status; unsigned char *transfer_buffer = kmemdup(cp, size, GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), request, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, transfer_buffer, size, CTRL_TIMEOUT); kfree(transfer_buffer); return status; } /* Control messages sent to the camera to initialize it * and launch the capture */ typedef struct { unsigned int value; unsigned int size; unsigned char *bytes; } message; /* method 0 */ static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 }; static unsigned char m0d3[] = { 0, 0 }; static message m0[] = { {0x1f30, 0, NULL}, {0xd000, 0, NULL}, {0x3370, sizeof(m0d1), m0d1}, {0x2000, 0, NULL}, {0x2f0f, 0, NULL}, {0x2610, sizeof(m0d2), m0d2}, {0xe107, 0, NULL}, {0x2502, 0, NULL}, {0x1f70, 0, NULL}, {0xd000, 0, NULL}, {0x9a01, sizeof(m0d3), m0d3}, {-1, -1, NULL} }; /* method 1 */ static unsigned char m1d1[] = { 0xff, 0xff }; static unsigned char m1d2[] = { 0x00, 0x00 }; static message m1[] = { {0x1f30, 0, NULL}, {0xd000, 0, NULL}, {0xf000, 0, NULL}, {0x2000, 0, NULL}, {0x2f0f, 0, NULL}, {0x2650, 0, NULL}, {0xe107, 0, NULL}, {0x2502, sizeof(m1d1), m1d1}, {0x1f70, 0, NULL}, {0xd000, 0, NULL}, {0xd000, 0, NULL}, {0xd000, 0, NULL}, {0x9a01, sizeof(m1d2), m1d2}, {-1, -1, NULL} }; /* method 2 */ static unsigned char m2d1[] = { 0xff, 0xff }; static message m2[] = { {0x1f30, 0, NULL}, {0xf000, 0, NULL}, {0x2000, 0, NULL}, {0x2f0f, 0, NULL}, {0x2650, 0, NULL}, {0xe107, 0, NULL}, {0x2502, sizeof(m2d1), m2d1}, {0x1f70, 0, NULL}, {-1, -1, NULL} }; /* init table */ static message *init[4] = { m0, m1, m2, m2 }; /* JPEG static data in header (Huffman table, etc) */ static unsigned char header1[] = { 0xFF, 0xD8, /* 0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F', 0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88, */ 0xFF, 0xDB, 0x00, 0x84 }; static unsigned char header2[] = { 0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F, 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01, 0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3F, 0x00 }; static unsigned char header3; /* ------------------------------------------------------------------ Videobuf operations ------------------------------------------------------------------*/ static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) { struct zr364xx_camera *cam = vq->priv_data; *size = cam->width * cam->height * (cam->fmt->depth >> 3); if (*count == 0) *count = ZR364XX_DEF_BUFS; if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024) *count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size; return 0; } static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf) { _DBG("%s\n", __func__); BUG_ON(in_interrupt()); videobuf_vmalloc_free(&buf->vb); buf->vb.state = VIDEOBUF_NEEDS_INIT; } static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, enum v4l2_field field) { struct zr364xx_camera *cam = vq->priv_data; struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, vb); int rc; DBG("%s, field=%d\n", __func__, field); if (!cam->fmt) return -EINVAL; buf->vb.size = cam->width * cam->height * (cam->fmt->depth >> 3); if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) { DBG("invalid buffer prepare\n"); return -EINVAL; } buf->fmt = cam->fmt; buf->vb.width = cam->width; buf->vb.height = cam->height; buf->vb.field = field; if (buf->vb.state == VIDEOBUF_NEEDS_INIT) { rc = videobuf_iolock(vq, &buf->vb, NULL); if (rc < 0) goto fail; } buf->vb.state = VIDEOBUF_PREPARED; return 0; fail: free_buffer(vq, buf); return rc; } static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, vb); struct zr364xx_camera *cam = vq->priv_data; _DBG("%s\n", __func__); buf->vb.state = VIDEOBUF_QUEUED; list_add_tail(&buf->vb.queue, &cam->vidq.active); } static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, vb); _DBG("%s\n", __func__); free_buffer(vq, buf); } static const struct videobuf_queue_ops zr364xx_video_qops = { .buf_setup = buffer_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .buf_release = buffer_release, }; /********************/ /* V4L2 integration */ /********************/ static int zr364xx_vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type type); static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count, loff_t * ppos) { struct zr364xx_camera *cam = video_drvdata(file); int err = 0; _DBG("%s\n", __func__); if (!buf) return -EINVAL; if (!count) return -EINVAL; if (mutex_lock_interruptible(&cam->lock)) return -ERESTARTSYS; err = zr364xx_vidioc_streamon(file, file->private_data, V4L2_BUF_TYPE_VIDEO_CAPTURE); if (err == 0) { DBG("%s: reading %d bytes at pos %d.\n", __func__, (int) count, (int) *ppos); /* NoMan Sux ! */ err = videobuf_read_one(&cam->vb_vidq, buf, count, ppos, file->f_flags & O_NONBLOCK); } mutex_unlock(&cam->lock); return err; } /* video buffer vmalloc implementation based partly on VIVI driver which is * Copyright (c) 2006 by * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> * Ted Walther <ted--a.t--enumera.com> * John Sokol <sokol--a.t--videotechnology.com> * http://v4l.videotechnology.com/ * */ static void zr364xx_fillbuff(struct zr364xx_camera *cam, struct zr364xx_buffer *buf, int jpgsize) { int pos = 0; const char *tmpbuf; char *vbuf = videobuf_to_vmalloc(&buf->vb); unsigned long last_frame; if (!vbuf) return; last_frame = cam->last_frame; if (last_frame != -1) { tmpbuf = (const char *)cam->buffer.frame[last_frame].lpvbits; switch (buf->fmt->fourcc) { case V4L2_PIX_FMT_JPEG: buf->vb.size = jpgsize; memcpy(vbuf, tmpbuf, buf->vb.size); break; default: printk(KERN_DEBUG KBUILD_MODNAME ": unknown format?\n"); } cam->last_frame = -1; } else { printk(KERN_ERR KBUILD_MODNAME ": =======no frame\n"); return; } DBG("%s: Buffer %p size= %d\n", __func__, vbuf, pos); /* tell v4l buffer was filled */ buf->vb.field_count = cam->frame_count * 2; buf->vb.ts = ktime_get_ns(); buf->vb.state = VIDEOBUF_DONE; } static int zr364xx_got_frame(struct zr364xx_camera *cam, int jpgsize) { struct zr364xx_dmaqueue *dma_q = &cam->vidq; struct zr364xx_buffer *buf; unsigned long flags = 0; int rc = 0; DBG("wakeup: %p\n", &dma_q); spin_lock_irqsave(&cam->slock, flags); if (list_empty(&dma_q->active)) { DBG("No active queue to serve\n"); rc = -1; goto unlock; } buf = list_entry(dma_q->active.next, struct zr364xx_buffer, vb.queue); if (!waitqueue_active(&buf->vb.done)) { /* no one active */ rc = -1; goto unlock; } list_del(&buf->vb.queue); buf->vb.ts = ktime_get_ns(); DBG("[%p/%d] wakeup\n", buf, buf->vb.i); zr364xx_fillbuff(cam, buf, jpgsize); wake_up(&buf->vb.done); DBG("wakeup [buf/i] [%p/%d]\n", buf, buf->vb.i); unlock: spin_unlock_irqrestore(&cam->slock, flags); return rc; } /* this function moves the usb stream read pipe data * into the system buffers. * returns 0 on success, EAGAIN if more data to process (call this * function again). */ static int zr364xx_read_video_callback(struct zr364xx_camera *cam, struct zr364xx_pipeinfo *pipe_info, struct urb *purb) { unsigned char *pdest; unsigned char *psrc; s32 idx = cam->cur_frame; struct zr364xx_framei *frm = &cam->buffer.frame[idx]; int i = 0; unsigned char *ptr = NULL; _DBG("buffer to user\n"); /* swap bytes if camera needs it */ if (cam->method == METHOD0) { u16 *buf = (u16 *)pipe_info->transfer_buffer; for (i = 0; i < purb->actual_length/2; i++) swab16s(buf + i); } /* search done. now find out if should be acquiring */ if (!cam->b_acquire) { /* we found a frame, but this channel is turned off */ frm->ulState = ZR364XX_READ_IDLE; return -EINVAL; } psrc = (u8 *)pipe_info->transfer_buffer; ptr = pdest = frm->lpvbits; if (frm->ulState == ZR364XX_READ_IDLE) { if (purb->actual_length < 128) { /* header incomplete */ dev_info(&cam->udev->dev, "%s: buffer (%d bytes) too small to hold jpeg header. Discarding.\n", __func__, purb->actual_length); return -EINVAL; } frm->ulState = ZR364XX_READ_FRAME; frm->cur_size = 0; _DBG("jpeg header, "); memcpy(ptr, header1, sizeof(header1)); ptr += sizeof(header1); header3 = 0; memcpy(ptr, &header3, 1); ptr++; memcpy(ptr, psrc, 64); ptr += 64; header3 = 1; memcpy(ptr, &header3, 1); ptr++; memcpy(ptr, psrc + 64, 64); ptr += 64; memcpy(ptr, header2, sizeof(header2)); ptr += sizeof(header2); memcpy(ptr, psrc + 128, purb->actual_length - 128); ptr += purb->actual_length - 128; _DBG("header : %d %d %d %d %d %d %d %d %d\n", psrc[0], psrc[1], psrc[2], psrc[3], psrc[4], psrc[5], psrc[6], psrc[7], psrc[8]); frm->cur_size = ptr - pdest; } else { if (frm->cur_size + purb->actual_length > MAX_FRAME_SIZE) { dev_info(&cam->udev->dev, "%s: buffer (%d bytes) too small to hold frame data. Discarding frame data.\n", __func__, MAX_FRAME_SIZE); } else { pdest += frm->cur_size; memcpy(pdest, psrc, purb->actual_length); frm->cur_size += purb->actual_length; } } /*_DBG("cur_size %lu urb size %d\n", frm->cur_size, purb->actual_length);*/ if (purb->actual_length < pipe_info->transfer_size) { _DBG("****************Buffer[%d]full*************\n", idx); cam->last_frame = cam->cur_frame; cam->cur_frame++; /* end of system frame ring buffer, start at zero */ if (cam->cur_frame == cam->buffer.dwFrames) cam->cur_frame = 0; /* frame ready */ /* go back to find the JPEG EOI marker */ ptr = pdest = frm->lpvbits; ptr += frm->cur_size - 2; while (ptr > pdest) { if (*ptr == 0xFF && *(ptr + 1) == 0xD9 && *(ptr + 2) == 0xFF) break; ptr--; } if (ptr == pdest) DBG("No EOI marker\n"); /* Sometimes there is junk data in the middle of the picture, * we want to skip this bogus frames */ while (ptr > pdest) { if (*ptr == 0xFF && *(ptr + 1) == 0xFF && *(ptr + 2) == 0xFF) break; ptr--; } if (ptr != pdest) { DBG("Bogus frame ? %d\n", ++(cam->nb)); } else if (cam->b_acquire) { /* we skip the 2 first frames which are usually buggy */ if (cam->skip) cam->skip--; else { _DBG("jpeg(%lu): %d %d %d %d %d %d %d %d\n", frm->cur_size, pdest[0], pdest[1], pdest[2], pdest[3], pdest[4], pdest[5], pdest[6], pdest[7]); zr364xx_got_frame(cam, frm->cur_size); } } cam->frame_count++; frm->ulState = ZR364XX_READ_IDLE; frm->cur_size = 0; } /* done successfully */ return 0; } static int zr364xx_vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct zr364xx_camera *cam = video_drvdata(file); strscpy(cap->driver, DRIVER_DESC, sizeof(cap->driver)); if (cam->udev->product) strscpy(cap->card, cam->udev->product, sizeof(cap->card)); strscpy(cap->bus_info, dev_name(&cam->udev->dev), sizeof(cap->bus_info)); return 0; } static int zr364xx_vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) { if (i->index != 0) return -EINVAL; strscpy(i->name, DRIVER_DESC " Camera", sizeof(i->name)); i->type = V4L2_INPUT_TYPE_CAMERA; return 0; } static int zr364xx_vidioc_g_input(struct file *file, void *priv, unsigned int *i) { *i = 0; return 0; } static int zr364xx_vidioc_s_input(struct file *file, void *priv, unsigned int i) { if (i != 0) return -EINVAL; return 0; } static int zr364xx_s_ctrl(struct v4l2_ctrl *ctrl) { struct zr364xx_camera *cam = container_of(ctrl->handler, struct zr364xx_camera, ctrl_handler); int temp; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: /* hardware brightness */ send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0); temp = (0x60 << 8) + 127 - ctrl->val; send_control_msg(cam->udev, 1, temp, 0, NULL, 0); break; default: return -EINVAL; } return 0; } static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (f->index > 0) return -EINVAL; f->pixelformat = formats[0].fourcc; return 0; } static char *decode_fourcc(__u32 pixelformat, char *buf) { buf[0] = pixelformat & 0xff; buf[1] = (pixelformat >> 8) & 0xff; buf[2] = (pixelformat >> 16) & 0xff; buf[3] = (pixelformat >> 24) & 0xff; buf[4] = '\0'; return buf; } static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct zr364xx_camera *cam = video_drvdata(file); char pixelformat_name[5]; if (!cam) return -ENODEV; if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) { DBG("%s: unsupported pixelformat V4L2_PIX_FMT_%s\n", __func__, decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name)); return -EINVAL; } if (!(f->fmt.pix.width == 160 && f->fmt.pix.height == 120) && !(f->fmt.pix.width == 640 && f->fmt.pix.height == 480)) { f->fmt.pix.width = 320; f->fmt.pix.height = 240; } f->fmt.pix.field = V4L2_FIELD_NONE; f->fmt.pix.bytesperline = f->fmt.pix.width * 2; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), f->fmt.pix.field); return 0; } static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct zr364xx_camera *cam; if (!file) return -ENODEV; cam = video_drvdata(file); f->fmt.pix.pixelformat = formats[0].fourcc; f->fmt.pix.field = V4L2_FIELD_NONE; f->fmt.pix.width = cam->width; f->fmt.pix.height = cam->height; f->fmt.pix.bytesperline = f->fmt.pix.width * 2; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; return 0; } static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct zr364xx_camera *cam = video_drvdata(file); struct videobuf_queue *q = &cam->vb_vidq; char pixelformat_name[5]; int ret = zr364xx_vidioc_try_fmt_vid_cap(file, cam, f); int i; if (ret < 0) return ret; mutex_lock(&q->vb_lock); if (videobuf_queue_is_busy(&cam->vb_vidq)) { DBG("%s queue busy\n", __func__); ret = -EBUSY; goto out; } if (cam->owner) { DBG("%s can't change format after started\n", __func__); ret = -EBUSY; goto out; } cam->width = f->fmt.pix.width; cam->height = f->fmt.pix.height; DBG("%s: %dx%d mode selected\n", __func__, cam->width, cam->height); f->fmt.pix.bytesperline = f->fmt.pix.width * 2; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; cam->vb_vidq.field = f->fmt.pix.field; if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120) mode = 1; else if (f->fmt.pix.width == 640 && f->fmt.pix.height == 480) mode = 2; else mode = 0; m0d1[0] = mode; m1[2].value = 0xf000 + mode; m2[1].value = 0xf000 + mode; /* special case for METHOD3, the modes are different */ if (cam->method == METHOD3) { switch (mode) { case 1: m2[1].value = 0xf000 + 4; break; case 2: m2[1].value = 0xf000 + 0; break; default: m2[1].value = 0xf000 + 1; break; } } header2[437] = cam->height / 256; header2[438] = cam->height % 256; header2[439] = cam->width / 256; header2[440] = cam->width % 256; for (i = 0; init[cam->method][i].size != -1; i++) { ret = send_control_msg(cam->udev, 1, init[cam->method][i].value, 0, init[cam->method][i].bytes, init[cam->method][i].size); if (ret < 0) { dev_err(&cam->udev->dev, "error during resolution change sequence: %d\n", i); goto out; } } /* Added some delay here, since opening/closing the camera quickly, * like Ekiga does during its startup, can crash the webcam */ mdelay(100); cam->skip = 2; ret = 0; out: mutex_unlock(&q->vb_lock); DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), f->fmt.pix.field); return ret; } static int zr364xx_vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *p) { struct zr364xx_camera *cam = video_drvdata(file); if (cam->owner && cam->owner != priv) return -EBUSY; return videobuf_reqbufs(&cam->vb_vidq, p); } static int zr364xx_vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) { int rc; struct zr364xx_camera *cam = video_drvdata(file); rc = videobuf_querybuf(&cam->vb_vidq, p); return rc; } static int zr364xx_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) { int rc; struct zr364xx_camera *cam = video_drvdata(file); _DBG("%s\n", __func__); if (cam->owner && cam->owner != priv) return -EBUSY; rc = videobuf_qbuf(&cam->vb_vidq, p); return rc; } static int zr364xx_vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) { int rc; struct zr364xx_camera *cam = video_drvdata(file); _DBG("%s\n", __func__); if (cam->owner && cam->owner != priv) return -EBUSY; rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK); return rc; } static void read_pipe_completion(struct urb *purb) { struct zr364xx_pipeinfo *pipe_info; struct zr364xx_camera *cam; int pipe; pipe_info = purb->context; _DBG("%s %p, status %d\n", __func__, purb, purb->status); if (!pipe_info) { printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); return; } cam = pipe_info->cam; if (!cam) { printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); return; } /* if shutting down, do not resubmit, exit immediately */ if (purb->status == -ESHUTDOWN) { DBG("%s, err shutdown\n", __func__); pipe_info->err_count++; return; } if (pipe_info->state == 0) { DBG("exiting USB pipe\n"); return; } if (purb->actual_length > pipe_info->transfer_size) { dev_err(&cam->udev->dev, "wrong number of bytes\n"); return; } if (purb->status == 0) zr364xx_read_video_callback(cam, pipe_info, purb); else { pipe_info->err_count++; DBG("%s: failed URB %d\n", __func__, purb->status); } pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); /* reuse urb */ usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, pipe, pipe_info->transfer_buffer, pipe_info->transfer_size, read_pipe_completion, pipe_info); if (pipe_info->state != 0) { purb->status = usb_submit_urb(pipe_info->stream_urb, GFP_ATOMIC); if (purb->status) dev_err(&cam->udev->dev, "error submitting urb (error=%i)\n", purb->status); } else DBG("read pipe complete state 0\n"); } static int zr364xx_start_readpipe(struct zr364xx_camera *cam) { int pipe; int retval; struct zr364xx_pipeinfo *pipe_info = cam->pipe; pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); DBG("%s: start pipe IN x%x\n", __func__, cam->read_endpoint); pipe_info->state = 1; pipe_info->err_count = 0; pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL); if (!pipe_info->stream_urb) return -ENOMEM; /* transfer buffer allocated in board_init */ usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, pipe, pipe_info->transfer_buffer, pipe_info->transfer_size, read_pipe_completion, pipe_info); DBG("submitting URB %p\n", pipe_info->stream_urb); retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL); if (retval) { printk(KERN_ERR KBUILD_MODNAME ": start read pipe failed\n"); return retval; } return 0; } static void zr364xx_stop_readpipe(struct zr364xx_camera *cam) { struct zr364xx_pipeinfo *pipe_info; if (!cam) { printk(KERN_ERR KBUILD_MODNAME ": invalid device\n"); return; } DBG("stop read pipe\n"); pipe_info = cam->pipe; if (pipe_info) { if (pipe_info->state != 0) pipe_info->state = 0; if (pipe_info->stream_urb) { /* cancel urb */ usb_kill_urb(pipe_info->stream_urb); usb_free_urb(pipe_info->stream_urb); pipe_info->stream_urb = NULL; } } return; } /* starts acquisition process */ static int zr364xx_start_acquire(struct zr364xx_camera *cam) { int j; DBG("start acquire\n"); cam->last_frame = -1; cam->cur_frame = 0; for (j = 0; j < FRAMES; j++) { cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; cam->buffer.frame[j].cur_size = 0; } cam->b_acquire = 1; return 0; } static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam) { cam->b_acquire = 0; return 0; } static int zr364xx_prepare(struct zr364xx_camera *cam) { int res; int i, j; for (i = 0; init[cam->method][i].size != -1; i++) { res = send_control_msg(cam->udev, 1, init[cam->method][i].value, 0, init[cam->method][i].bytes, init[cam->method][i].size); if (res < 0) { dev_err(&cam->udev->dev, "error during open sequence: %d\n", i); return res; } } cam->skip = 2; cam->last_frame = -1; cam->cur_frame = 0; cam->frame_count = 0; for (j = 0; j < FRAMES; j++) { cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; cam->buffer.frame[j].cur_size = 0; } v4l2_ctrl_handler_setup(&cam->ctrl_handler); return 0; } static int zr364xx_vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct zr364xx_camera *cam = video_drvdata(file); int res; DBG("%s\n", __func__); if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (cam->owner && cam->owner != priv) return -EBUSY; res = zr364xx_prepare(cam); if (res) return res; res = videobuf_streamon(&cam->vb_vidq); if (res == 0) { zr364xx_start_acquire(cam); cam->owner = file->private_data; } return res; } static int zr364xx_vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct zr364xx_camera *cam = video_drvdata(file); DBG("%s\n", __func__); if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (cam->owner && cam->owner != priv) return -EBUSY; zr364xx_stop_acquire(cam); return videobuf_streamoff(&cam->vb_vidq); } /* open the camera */ static int zr364xx_open(struct file *file) { struct zr364xx_camera *cam = video_drvdata(file); int err; DBG("%s\n", __func__); if (mutex_lock_interruptible(&cam->lock)) return -ERESTARTSYS; err = v4l2_fh_open(file); if (err) goto out; /* Added some delay here, since opening/closing the camera quickly, * like Ekiga does during its startup, can crash the webcam */ mdelay(100); err = 0; out: mutex_unlock(&cam->lock); DBG("%s: %d\n", __func__, err); return err; } static void zr364xx_release(struct v4l2_device *v4l2_dev) { struct zr364xx_camera *cam = container_of(v4l2_dev, struct zr364xx_camera, v4l2_dev); unsigned long i; v4l2_device_unregister(&cam->v4l2_dev); videobuf_mmap_free(&cam->vb_vidq); /* release sys buffers */ for (i = 0; i < FRAMES; i++) { if (cam->buffer.frame[i].lpvbits) { DBG("vfree %p\n", cam->buffer.frame[i].lpvbits); vfree(cam->buffer.frame[i].lpvbits); } cam->buffer.frame[i].lpvbits = NULL; } v4l2_ctrl_handler_free(&cam->ctrl_handler); /* release transfer buffer */ kfree(cam->pipe->transfer_buffer); kfree(cam); } /* release the camera */ static int zr364xx_close(struct file *file) { struct zr364xx_camera *cam; struct usb_device *udev; int i; DBG("%s\n", __func__); cam = video_drvdata(file); mutex_lock(&cam->lock); udev = cam->udev; if (file->private_data == cam->owner) { /* turn off stream */ if (cam->b_acquire) zr364xx_stop_acquire(cam); videobuf_streamoff(&cam->vb_vidq); for (i = 0; i < 2; i++) { send_control_msg(udev, 1, init[cam->method][i].value, 0, init[cam->method][i].bytes, init[cam->method][i].size); } cam->owner = NULL; } /* Added some delay here, since opening/closing the camera quickly, * like Ekiga does during its startup, can crash the webcam */ mdelay(100); mutex_unlock(&cam->lock); return v4l2_fh_release(file); } static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma) { struct zr364xx_camera *cam = video_drvdata(file); int ret; if (!cam) { DBG("%s: cam == NULL\n", __func__); return -ENODEV; } DBG("mmap called, vma=%p\n", vma); ret = videobuf_mmap_mapper(&cam->vb_vidq, vma); DBG("vma start=0x%08lx, size=%ld, ret=%d\n", (unsigned long)vma->vm_start, (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret); return ret; } static __poll_t zr364xx_poll(struct file *file, struct poll_table_struct *wait) { struct zr364xx_camera *cam = video_drvdata(file); struct videobuf_queue *q = &cam->vb_vidq; __poll_t res = v4l2_ctrl_poll(file, wait); _DBG("%s\n", __func__); return res | videobuf_poll_stream(file, q, wait); } static const struct v4l2_ctrl_ops zr364xx_ctrl_ops = { .s_ctrl = zr364xx_s_ctrl, }; static const struct v4l2_file_operations zr364xx_fops = { .owner = THIS_MODULE, .open = zr364xx_open, .release = zr364xx_close, .read = zr364xx_read, .mmap = zr364xx_mmap, .unlocked_ioctl = video_ioctl2, .poll = zr364xx_poll, }; static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = { .vidioc_querycap = zr364xx_vidioc_querycap, .vidioc_enum_fmt_vid_cap = zr364xx_vidioc_enum_fmt_vid_cap, .vidioc_try_fmt_vid_cap = zr364xx_vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = zr364xx_vidioc_s_fmt_vid_cap, .vidioc_g_fmt_vid_cap = zr364xx_vidioc_g_fmt_vid_cap, .vidioc_enum_input = zr364xx_vidioc_enum_input, .vidioc_g_input = zr364xx_vidioc_g_input, .vidioc_s_input = zr364xx_vidioc_s_input, .vidioc_streamon = zr364xx_vidioc_streamon, .vidioc_streamoff = zr364xx_vidioc_streamoff, .vidioc_reqbufs = zr364xx_vidioc_reqbufs, .vidioc_querybuf = zr364xx_vidioc_querybuf, .vidioc_qbuf = zr364xx_vidioc_qbuf, .vidioc_dqbuf = zr364xx_vidioc_dqbuf, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static const struct video_device zr364xx_template = { .name = DRIVER_DESC, .fops = &zr364xx_fops, .ioctl_ops = &zr364xx_ioctl_ops, .release = video_device_release_empty, .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, }; /*******************/ /* USB integration */ /*******************/ static int zr364xx_board_init(struct zr364xx_camera *cam) { struct zr364xx_pipeinfo *pipe = cam->pipe; unsigned long i; DBG("board init: %p\n", cam); memset(pipe, 0, sizeof(*pipe)); pipe->cam = cam; pipe->transfer_size = BUFFER_SIZE; pipe->transfer_buffer = kzalloc(pipe->transfer_size, GFP_KERNEL); if (!pipe->transfer_buffer) { DBG("out of memory!\n"); return -ENOMEM; } cam->b_acquire = 0; cam->frame_count = 0; /*** start create system buffers ***/ for (i = 0; i < FRAMES; i++) { /* always allocate maximum size for system buffers */ cam->buffer.frame[i].lpvbits = vmalloc(MAX_FRAME_SIZE); DBG("valloc %p, idx %lu, pdata %p\n", &cam->buffer.frame[i], i, cam->buffer.frame[i].lpvbits); if (!cam->buffer.frame[i].lpvbits) { printk(KERN_INFO KBUILD_MODNAME ": out of memory. Using less frames\n"); break; } } if (i == 0) { printk(KERN_INFO KBUILD_MODNAME ": out of memory. Aborting\n"); kfree(cam->pipe->transfer_buffer); cam->pipe->transfer_buffer = NULL; return -ENOMEM; } else cam->buffer.dwFrames = i; /* make sure internal states are set */ for (i = 0; i < FRAMES; i++) { cam->buffer.frame[i].ulState = ZR364XX_READ_IDLE; cam->buffer.frame[i].cur_size = 0; } cam->cur_frame = 0; cam->last_frame = -1; /*** end create system buffers ***/ /* start read pipe */ zr364xx_start_readpipe(cam); DBG(": board initialized\n"); return 0; } static int zr364xx_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *udev = interface_to_usbdev(intf); struct zr364xx_camera *cam = NULL; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; struct v4l2_ctrl_handler *hdl; int err; int i; DBG("probing...\n"); dev_info(&intf->dev, DRIVER_DESC " compatible webcam plugged\n"); dev_info(&intf->dev, "model %04x:%04x detected\n", le16_to_cpu(udev->descriptor.idVendor), le16_to_cpu(udev->descriptor.idProduct)); cam = kzalloc(sizeof(*cam), GFP_KERNEL); if (!cam) return -ENOMEM; cam->v4l2_dev.release = zr364xx_release; err = v4l2_device_register(&intf->dev, &cam->v4l2_dev); if (err < 0) { dev_err(&udev->dev, "couldn't register v4l2_device\n"); kfree(cam); return err; } hdl = &cam->ctrl_handler; v4l2_ctrl_handler_init(hdl, 1); v4l2_ctrl_new_std(hdl, &zr364xx_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 127, 1, 64); if (hdl->error) { err = hdl->error; dev_err(&udev->dev, "couldn't register control\n"); goto fail; } /* save the init method used by this camera */ cam->method = id->driver_info; mutex_init(&cam->lock); cam->vdev = zr364xx_template; cam->vdev.lock = &cam->lock; cam->vdev.v4l2_dev = &cam->v4l2_dev; cam->vdev.ctrl_handler = &cam->ctrl_handler; video_set_drvdata(&cam->vdev, cam); cam->udev = udev; switch (mode) { case 1: dev_info(&udev->dev, "160x120 mode selected\n"); cam->width = 160; cam->height = 120; break; case 2: dev_info(&udev->dev, "640x480 mode selected\n"); cam->width = 640; cam->height = 480; break; default: dev_info(&udev->dev, "320x240 mode selected\n"); cam->width = 320; cam->height = 240; break; } m0d1[0] = mode; m1[2].value = 0xf000 + mode; m2[1].value = 0xf000 + mode; /* special case for METHOD3, the modes are different */ if (cam->method == METHOD3) { switch (mode) { case 1: m2[1].value = 0xf000 + 4; break; case 2: m2[1].value = 0xf000 + 0; break; default: m2[1].value = 0xf000 + 1; break; } } header2[437] = cam->height / 256; header2[438] = cam->height % 256; header2[439] = cam->width / 256; header2[440] = cam->width % 256; cam->nb = 0; DBG("dev: %p, udev %p interface %p\n", cam, cam->udev, intf); /* set up the endpoint information */ iface_desc = intf->cur_altsetting; DBG("num endpoints %d\n", iface_desc->desc.bNumEndpoints); for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { endpoint = &iface_desc->endpoint[i].desc; if (!cam->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) { /* we found the bulk in endpoint */ cam->read_endpoint = endpoint->bEndpointAddress; } } if (!cam->read_endpoint) { err = -ENOMEM; dev_err(&intf->dev, "Could not find bulk-in endpoint\n"); goto fail; } /* v4l */ INIT_LIST_HEAD(&cam->vidq.active); cam->vidq.cam = cam; usb_set_intfdata(intf, cam); /* load zr364xx board specific */ err = zr364xx_board_init(cam); if (!err) err = v4l2_ctrl_handler_setup(hdl); if (err) goto fail; spin_lock_init(&cam->slock); cam->fmt = formats; videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops, NULL, &cam->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, sizeof(struct zr364xx_buffer), cam, &cam->lock); err = video_register_device(&cam->vdev, VFL_TYPE_VIDEO, -1); if (err) { dev_err(&udev->dev, "video_register_device failed\n"); goto fail; } dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n", video_device_node_name(&cam->vdev)); return 0; fail: v4l2_ctrl_handler_free(hdl); v4l2_device_unregister(&cam->v4l2_dev); kfree(cam); return err; } static void zr364xx_disconnect(struct usb_interface *intf) { struct zr364xx_camera *cam = usb_get_intfdata(intf); mutex_lock(&cam->lock); usb_set_intfdata(intf, NULL); dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n"); video_unregister_device(&cam->vdev); v4l2_device_disconnect(&cam->v4l2_dev); /* stops the read pipe if it is running */ if (cam->b_acquire) zr364xx_stop_acquire(cam); zr364xx_stop_readpipe(cam); mutex_unlock(&cam->lock); v4l2_device_put(&cam->v4l2_dev); } #ifdef CONFIG_PM static int zr364xx_suspend(struct usb_interface *intf, pm_message_t message) { struct zr364xx_camera *cam = usb_get_intfdata(intf); cam->was_streaming = cam->b_acquire; if (!cam->was_streaming) return 0; zr364xx_stop_acquire(cam); zr364xx_stop_readpipe(cam); return 0; } static int zr364xx_resume(struct usb_interface *intf) { struct zr364xx_camera *cam = usb_get_intfdata(intf); int res; if (!cam->was_streaming) return 0; zr364xx_start_readpipe(cam); res = zr364xx_prepare(cam); if (!res) zr364xx_start_acquire(cam); return res; } #endif /**********************/ /* Module integration */ /**********************/ static struct usb_driver zr364xx_driver = { .name = "zr364xx", .probe = zr364xx_probe, .disconnect = zr364xx_disconnect, #ifdef CONFIG_PM .suspend = zr364xx_suspend, .resume = zr364xx_resume, .reset_resume = zr364xx_resume, #endif .id_table = device_table }; module_usb_driver(zr364xx_driver); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_VERSION(DRIVER_VERSION);
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