// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Zoran 364xx based USB webcam module version 0.73
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*
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* Allows you to use your USB webcam with V4L2 applications
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* This is still in heavy development !
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*
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* Copyright (C) 2004 Antoine Jacquet <royale@zerezo.com>
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* http://royale.zerezo.com/zr364xx/
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*
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* Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers
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* V4L2 version inspired by meye.c driver
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*
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* Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers.
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*/
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|
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/usb.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/highmem.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-fh.h>
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#include <media/v4l2-event.h>
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#include <media/videobuf-vmalloc.h>
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|
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/* Version Information */
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#define DRIVER_VERSION "0.7.4"
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#define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/"
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#define DRIVER_DESC "Zoran 364xx"
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|
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/* Camera */
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#define FRAMES 1
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#define MAX_FRAME_SIZE 200000
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#define BUFFER_SIZE 0x1000
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#define CTRL_TIMEOUT 500
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#define ZR364XX_DEF_BUFS 4
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#define ZR364XX_READ_IDLE 0
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#define ZR364XX_READ_FRAME 1
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/* Debug macro */
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#define DBG(fmt, args...) \
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do { \
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if (debug) { \
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printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \
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} \
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} while (0)
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/*#define FULL_DEBUG 1*/
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#ifdef FULL_DEBUG
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#define _DBG DBG
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#else
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#define _DBG(fmt, args...)
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#endif
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/* Init methods, need to find nicer names for these
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* the exact names of the chipsets would be the best if someone finds it */
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#define METHOD0 0
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#define METHOD1 1
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#define METHOD2 2
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#define METHOD3 3
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|
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/* Module parameters */
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static int debug;
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static int mode;
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|
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/* Module parameters interface */
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debug level");
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module_param(mode, int, 0644);
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MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480");
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|
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/* Devices supported by this driver
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* .driver_info contains the init method used by the camera */
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static const struct usb_device_id device_table[] = {
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{USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 },
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{USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 },
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{USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 },
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{USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 },
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{USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 },
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{USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 },
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{USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 },
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{USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 },
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{USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 },
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{USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 },
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{USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 },
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{USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 },
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{USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 },
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{USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 },
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{USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 },
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{USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 },
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{USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 },
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{USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 },
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{USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 },
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{USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 },
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{USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 },
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, device_table);
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/* frame structure */
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struct zr364xx_framei {
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unsigned long ulState; /* ulState:ZR364XX_READ_IDLE,
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ZR364XX_READ_FRAME */
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void *lpvbits; /* image data */
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unsigned long cur_size; /* current data copied to it */
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};
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/* image buffer structure */
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struct zr364xx_bufferi {
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unsigned long dwFrames; /* number of frames in buffer */
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struct zr364xx_framei frame[FRAMES]; /* array of FRAME structures */
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};
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struct zr364xx_dmaqueue {
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struct list_head active;
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struct zr364xx_camera *cam;
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};
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struct zr364xx_pipeinfo {
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u32 transfer_size;
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u8 *transfer_buffer;
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u32 state;
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void *stream_urb;
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void *cam; /* back pointer to zr364xx_camera struct */
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u32 err_count;
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u32 idx;
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};
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struct zr364xx_fmt {
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u32 fourcc;
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int depth;
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};
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/* image formats. */
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static const struct zr364xx_fmt formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_JPEG,
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.depth = 24
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}
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};
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/* Camera stuff */
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struct zr364xx_camera {
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struct usb_device *udev; /* save off the usb device pointer */
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struct usb_interface *interface;/* the interface for this device */
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struct v4l2_device v4l2_dev;
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struct v4l2_ctrl_handler ctrl_handler;
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struct video_device vdev; /* v4l video device */
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struct v4l2_fh *owner; /* owns the streaming */
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int nb;
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struct zr364xx_bufferi buffer;
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int skip;
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int width;
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int height;
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int method;
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struct mutex lock;
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spinlock_t slock;
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struct zr364xx_dmaqueue vidq;
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int last_frame;
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int cur_frame;
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unsigned long frame_count;
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int b_acquire;
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struct zr364xx_pipeinfo pipe[1];
|
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u8 read_endpoint;
|
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const struct zr364xx_fmt *fmt;
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struct videobuf_queue vb_vidq;
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bool was_streaming;
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};
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/* buffer for one video frame */
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struct zr364xx_buffer {
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/* common v4l buffer stuff -- must be first */
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struct videobuf_buffer vb;
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const struct zr364xx_fmt *fmt;
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};
|
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/* function used to send initialisation commands to the camera */
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static int send_control_msg(struct usb_device *udev, u8 request, u16 value,
|
u16 index, unsigned char *cp, u16 size)
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{
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int status;
|
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unsigned char *transfer_buffer = kmemdup(cp, size, GFP_KERNEL);
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if (!transfer_buffer)
|
return -ENOMEM;
|
|
status = usb_control_msg(udev,
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usb_sndctrlpipe(udev, 0),
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request,
|
USB_DIR_OUT | USB_TYPE_VENDOR |
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USB_RECIP_DEVICE, value, index,
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transfer_buffer, size, CTRL_TIMEOUT);
|
|
kfree(transfer_buffer);
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return status;
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}
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|
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/* Control messages sent to the camera to initialize it
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* and launch the capture */
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typedef struct {
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unsigned int value;
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unsigned int size;
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unsigned char *bytes;
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} message;
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|
/* method 0 */
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static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 };
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static unsigned char m0d3[] = { 0, 0 };
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static message m0[] = {
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{0x1f30, 0, NULL},
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{0xd000, 0, NULL},
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{0x3370, sizeof(m0d1), m0d1},
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{0x2000, 0, NULL},
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{0x2f0f, 0, NULL},
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{0x2610, sizeof(m0d2), m0d2},
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{0xe107, 0, NULL},
|
{0x2502, 0, NULL},
|
{0x1f70, 0, NULL},
|
{0xd000, 0, NULL},
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{0x9a01, sizeof(m0d3), m0d3},
|
{-1, -1, NULL}
|
};
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|
/* method 1 */
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static unsigned char m1d1[] = { 0xff, 0xff };
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static unsigned char m1d2[] = { 0x00, 0x00 };
|
static message m1[] = {
|
{0x1f30, 0, NULL},
|
{0xd000, 0, NULL},
|
{0xf000, 0, NULL},
|
{0x2000, 0, NULL},
|
{0x2f0f, 0, NULL},
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{0x2650, 0, NULL},
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{0xe107, 0, NULL},
|
{0x2502, sizeof(m1d1), m1d1},
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{0x1f70, 0, NULL},
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{0xd000, 0, NULL},
|
{0xd000, 0, NULL},
|
{0xd000, 0, NULL},
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{0x9a01, sizeof(m1d2), m1d2},
|
{-1, -1, NULL}
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};
|
|
/* method 2 */
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static unsigned char m2d1[] = { 0xff, 0xff };
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static message m2[] = {
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{0x1f30, 0, NULL},
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{0xf000, 0, NULL},
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{0x2000, 0, NULL},
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{0x2f0f, 0, NULL},
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{0x2650, 0, NULL},
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{0xe107, 0, NULL},
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{0x2502, sizeof(m2d1), m2d1},
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{0x1f70, 0, NULL},
|
{-1, -1, NULL}
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};
|
|
/* init table */
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static message *init[4] = { m0, m1, m2, m2 };
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|
|
/* JPEG static data in header (Huffman table, etc) */
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static unsigned char header1[] = {
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0xFF, 0xD8,
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/*
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0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F',
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0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88,
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*/
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0xFF, 0xDB, 0x00, 0x84
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};
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static unsigned char header2[] = {
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0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
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0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02,
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0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
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0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06,
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0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1,
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0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33,
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0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25,
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0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
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0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54,
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0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
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0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A,
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0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94,
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0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
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0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8,
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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) {
|
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);
|
