diff options
Diffstat (limited to 'drivers/staging/media/deprecated/zr364xx/zr364xx.c')
| -rw-r--r-- | drivers/staging/media/deprecated/zr364xx/zr364xx.c | 1635 |
1 files changed, 0 insertions, 1635 deletions
diff --git a/drivers/staging/media/deprecated/zr364xx/zr364xx.c b/drivers/staging/media/deprecated/zr364xx/zr364xx.c deleted file mode 100644 index 538a330046ec..000000000000 --- a/drivers/staging/media/deprecated/zr364xx/zr364xx.c +++ /dev/null @@ -1,1635 +0,0 @@ -// 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__); - - 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) { - usb_free_urb(pipe_info->stream_urb); - 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_board_uninit(struct zr364xx_camera *cam) -{ - unsigned long i; - - zr364xx_stop_readpipe(cam); - - /* 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; - } - - /* release transfer buffer */ - kfree(cam->pipe->transfer_buffer); -} - -static void zr364xx_release(struct v4l2_device *v4l2_dev) -{ - struct zr364xx_camera *cam = - container_of(v4l2_dev, struct zr364xx_camera, v4l2_dev); - - videobuf_mmap_free(&cam->vb_vidq); - v4l2_ctrl_handler_free(&cam->ctrl_handler); - zr364xx_board_uninit(cam); - v4l2_device_unregister(&cam->v4l2_dev); - 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; - int err; - - 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"); - err = -ENOMEM; - goto err_free; - } 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 */ - err = zr364xx_start_readpipe(cam); - if (err) - goto err_free_frames; - - DBG(": board initialized\n"); - return 0; - -err_free_frames: - for (i = 0; i < FRAMES; i++) - vfree(cam->buffer.frame[i].lpvbits); -err_free: - kfree(cam->pipe->transfer_buffer); - cam->pipe->transfer_buffer = NULL; - return err; -} - -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; - - err = v4l2_device_register(&intf->dev, &cam->v4l2_dev); - if (err < 0) { - dev_err(&udev->dev, "couldn't register v4l2_device\n"); - goto free_cam; - } - 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 free_hdlr_and_unreg_dev; - } - /* 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 free_hdlr_and_unreg_dev; - } - - /* 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) - goto free_hdlr_and_unreg_dev; - err = v4l2_ctrl_handler_setup(hdl); - if (err) - goto board_uninit; - - 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 board_uninit; - } - cam->v4l2_dev.release = zr364xx_release; - - dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n", - video_device_node_name(&cam->vdev)); - return 0; - -board_uninit: - zr364xx_board_uninit(cam); -free_hdlr_and_unreg_dev: - v4l2_ctrl_handler_free(hdl); - v4l2_device_unregister(&cam->v4l2_dev); -free_cam: - 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; - - res = zr364xx_start_readpipe(cam); - if (res) - return res; - - res = zr364xx_prepare(cam); - if (res) - goto err_prepare; - - zr364xx_start_acquire(cam); - return 0; - -err_prepare: - zr364xx_stop_readpipe(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); |