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1634 lines
41 KiB
1634 lines
41 KiB
// 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 <[email protected]> |
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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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#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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/* 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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/* 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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/* Module parameters */ |
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static int debug; |
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static int mode; |
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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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/* 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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|
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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, |
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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) |
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return -ENOMEM; |
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status = usb_control_msg(udev, |
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usb_sndctrlpipe(udev, 0), |
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request, |
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USB_DIR_OUT | USB_TYPE_VENDOR | |
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USB_RECIP_DEVICE, value, index, |
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transfer_buffer, size, CTRL_TIMEOUT); |
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kfree(transfer_buffer); |
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return status; |
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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}, |
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{0x2502, 0, NULL}, |
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{0x1f70, 0, NULL}, |
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{0xd000, 0, NULL}, |
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{0x9a01, sizeof(m0d3), m0d3}, |
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{-1, -1, NULL} |
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}; |
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|
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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 }; |
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static message m1[] = { |
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{0x1f30, 0, NULL}, |
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{0xd000, 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(m1d1), m1d1}, |
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{0x1f70, 0, NULL}, |
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{0xd000, 0, NULL}, |
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{0xd000, 0, NULL}, |
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{0xd000, 0, NULL}, |
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{0x9a01, sizeof(m1d2), m1d2}, |
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{-1, -1, NULL} |
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}; |
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|
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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}, |
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{-1, -1, NULL} |
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}; |
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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, |
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0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2, |
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0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, |
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0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F, |
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0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, |
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0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5, |
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0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, |
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0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, |
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0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, |
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0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, |
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0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, |
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0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, |
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0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, |
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0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, |
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0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, |
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0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, |
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0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, |
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0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, |
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0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, |
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0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, |
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0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, |
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0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, |
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0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01, |
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0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, |
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0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, |
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0x00, 0x3F, 0x00 |
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}; |
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static unsigned char header3; |
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|
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/* ------------------------------------------------------------------ |
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Videobuf operations |
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------------------------------------------------------------------*/ |
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|
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static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, |
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unsigned int *size) |
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{ |
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struct zr364xx_camera *cam = vq->priv_data; |
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|
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*size = cam->width * cam->height * (cam->fmt->depth >> 3); |
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|
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if (*count == 0) |
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*count = ZR364XX_DEF_BUFS; |
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|
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if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024) |
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*count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size; |
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|
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return 0; |
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} |
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|
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static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf) |
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{ |
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_DBG("%s\n", __func__); |
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|
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videobuf_vmalloc_free(&buf->vb); |
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buf->vb.state = VIDEOBUF_NEEDS_INIT; |
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} |
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|
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static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, |
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enum v4l2_field field) |
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{ |
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struct zr364xx_camera *cam = vq->priv_data; |
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struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, |
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vb); |
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int rc; |
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|
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DBG("%s, field=%d\n", __func__, field); |
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if (!cam->fmt) |
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return -EINVAL; |
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|
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buf->vb.size = cam->width * cam->height * (cam->fmt->depth >> 3); |
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|
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if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) { |
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DBG("invalid buffer prepare\n"); |
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return -EINVAL; |
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} |
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|
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buf->fmt = cam->fmt; |
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buf->vb.width = cam->width; |
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buf->vb.height = cam->height; |
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buf->vb.field = field; |
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|
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if (buf->vb.state == VIDEOBUF_NEEDS_INIT) { |
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rc = videobuf_iolock(vq, &buf->vb, NULL); |
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if (rc < 0) |
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goto fail; |
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} |
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|
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buf->vb.state = VIDEOBUF_PREPARED; |
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return 0; |
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fail: |
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free_buffer(vq, buf); |
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return rc; |
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} |
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|
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static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) |
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{ |
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struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, |
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vb); |
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struct zr364xx_camera *cam = vq->priv_data; |
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|
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_DBG("%s\n", __func__); |
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|
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buf->vb.state = VIDEOBUF_QUEUED; |
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list_add_tail(&buf->vb.queue, &cam->vidq.active); |
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} |
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|
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static void buffer_release(struct videobuf_queue *vq, |
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struct videobuf_buffer *vb) |
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{ |
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struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, |
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vb); |
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|
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_DBG("%s\n", __func__); |
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free_buffer(vq, buf); |
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} |
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|
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static const struct videobuf_queue_ops zr364xx_video_qops = { |
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.buf_setup = buffer_setup, |
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.buf_prepare = buffer_prepare, |
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.buf_queue = buffer_queue, |
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.buf_release = buffer_release, |
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}; |
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|
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/********************/ |
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/* V4L2 integration */ |
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/********************/ |
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static int zr364xx_vidioc_streamon(struct file *file, void *priv, |
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enum v4l2_buf_type type); |
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|
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static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count, |
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loff_t * ppos) |
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{ |
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struct zr364xx_camera *cam = video_drvdata(file); |
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int err = 0; |
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|
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_DBG("%s\n", __func__); |
|
|
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if (!buf) |
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return -EINVAL; |
|
|
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if (!count) |
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return -EINVAL; |
|
|
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if (mutex_lock_interruptible(&cam->lock)) |
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return -ERESTARTSYS; |
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|
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err = zr364xx_vidioc_streamon(file, file->private_data, |
|
V4L2_BUF_TYPE_VIDEO_CAPTURE); |
|
if (err == 0) { |
|
DBG("%s: reading %d bytes at pos %d.\n", __func__, |
|
(int) count, (int) *ppos); |
|
|
|
/* NoMan Sux ! */ |
|
err = videobuf_read_one(&cam->vb_vidq, buf, count, ppos, |
|
file->f_flags & O_NONBLOCK); |
|
} |
|
mutex_unlock(&cam->lock); |
|
return err; |
|
} |
|
|
|
/* video buffer vmalloc implementation based partly on VIVI driver which is |
|
* Copyright (c) 2006 by |
|
* Mauro Carvalho Chehab <mchehab--a.t--infradead.org> |
|
* Ted Walther <ted--a.t--enumera.com> |
|
* John Sokol <sokol--a.t--videotechnology.com> |
|
* http://v4l.videotechnology.com/ |
|
* |
|
*/ |
|
static void zr364xx_fillbuff(struct zr364xx_camera *cam, |
|
struct zr364xx_buffer *buf, |
|
int jpgsize) |
|
{ |
|
int pos = 0; |
|
const char *tmpbuf; |
|
char *vbuf = videobuf_to_vmalloc(&buf->vb); |
|
unsigned long last_frame; |
|
|
|
if (!vbuf) |
|
return; |
|
|
|
last_frame = cam->last_frame; |
|
if (last_frame != -1) { |
|
tmpbuf = (const char *)cam->buffer.frame[last_frame].lpvbits; |
|
switch (buf->fmt->fourcc) { |
|
case V4L2_PIX_FMT_JPEG: |
|
buf->vb.size = jpgsize; |
|
memcpy(vbuf, tmpbuf, buf->vb.size); |
|
break; |
|
default: |
|
printk(KERN_DEBUG KBUILD_MODNAME ": unknown format?\n"); |
|
} |
|
cam->last_frame = -1; |
|
} else { |
|
printk(KERN_ERR KBUILD_MODNAME ": =======no frame\n"); |
|
return; |
|
} |
|
DBG("%s: Buffer %p size= %d\n", __func__, vbuf, pos); |
|
/* tell v4l buffer was filled */ |
|
|
|
buf->vb.field_count = cam->frame_count * 2; |
|
buf->vb.ts = ktime_get_ns(); |
|
buf->vb.state = VIDEOBUF_DONE; |
|
} |
|
|
|
static int zr364xx_got_frame(struct zr364xx_camera *cam, int jpgsize) |
|
{ |
|
struct zr364xx_dmaqueue *dma_q = &cam->vidq; |
|
struct zr364xx_buffer *buf; |
|
unsigned long flags = 0; |
|
int rc = 0; |
|
|
|
DBG("wakeup: %p\n", &dma_q); |
|
spin_lock_irqsave(&cam->slock, flags); |
|
|
|
if (list_empty(&dma_q->active)) { |
|
DBG("No active queue to serve\n"); |
|
rc = -1; |
|
goto unlock; |
|
} |
|
buf = list_entry(dma_q->active.next, |
|
struct zr364xx_buffer, vb.queue); |
|
|
|
if (!waitqueue_active(&buf->vb.done)) { |
|
/* no one active */ |
|
rc = -1; |
|
goto unlock; |
|
} |
|
list_del(&buf->vb.queue); |
|
buf->vb.ts = ktime_get_ns(); |
|
DBG("[%p/%d] wakeup\n", buf, buf->vb.i); |
|
zr364xx_fillbuff(cam, buf, jpgsize); |
|
wake_up(&buf->vb.done); |
|
DBG("wakeup [buf/i] [%p/%d]\n", buf, buf->vb.i); |
|
unlock: |
|
spin_unlock_irqrestore(&cam->slock, flags); |
|
return rc; |
|
} |
|
|
|
/* this function moves the usb stream read pipe data |
|
* into the system buffers. |
|
* returns 0 on success, EAGAIN if more data to process (call this |
|
* function again). |
|
*/ |
|
static int zr364xx_read_video_callback(struct zr364xx_camera *cam, |
|
struct zr364xx_pipeinfo *pipe_info, |
|
struct urb *purb) |
|
{ |
|
unsigned char *pdest; |
|
unsigned char *psrc; |
|
s32 idx = cam->cur_frame; |
|
struct zr364xx_framei *frm = &cam->buffer.frame[idx]; |
|
int i = 0; |
|
unsigned char *ptr = NULL; |
|
|
|
_DBG("buffer to user\n"); |
|
|
|
/* swap bytes if camera needs it */ |
|
if (cam->method == METHOD0) { |
|
u16 *buf = (u16 *)pipe_info->transfer_buffer; |
|
for (i = 0; i < purb->actual_length/2; i++) |
|
swab16s(buf + i); |
|
} |
|
|
|
/* search done. now find out if should be acquiring */ |
|
if (!cam->b_acquire) { |
|
/* we found a frame, but this channel is turned off */ |
|
frm->ulState = ZR364XX_READ_IDLE; |
|
return -EINVAL; |
|
} |
|
|
|
psrc = (u8 *)pipe_info->transfer_buffer; |
|
ptr = pdest = frm->lpvbits; |
|
|
|
if (frm->ulState == ZR364XX_READ_IDLE) { |
|
if (purb->actual_length < 128) { |
|
/* header incomplete */ |
|
dev_info(&cam->udev->dev, |
|
"%s: buffer (%d bytes) too small to hold jpeg header. Discarding.\n", |
|
__func__, purb->actual_length); |
|
return -EINVAL; |
|
} |
|
|
|
frm->ulState = ZR364XX_READ_FRAME; |
|
frm->cur_size = 0; |
|
|
|
_DBG("jpeg header, "); |
|
memcpy(ptr, header1, sizeof(header1)); |
|
ptr += sizeof(header1); |
|
header3 = 0; |
|
memcpy(ptr, &header3, 1); |
|
ptr++; |
|
memcpy(ptr, psrc, 64); |
|
ptr += 64; |
|
header3 = 1; |
|
memcpy(ptr, &header3, 1); |
|
ptr++; |
|
memcpy(ptr, psrc + 64, 64); |
|
ptr += 64; |
|
memcpy(ptr, header2, sizeof(header2)); |
|
ptr += sizeof(header2); |
|
memcpy(ptr, psrc + 128, |
|
purb->actual_length - 128); |
|
ptr += purb->actual_length - 128; |
|
_DBG("header : %d %d %d %d %d %d %d %d %d\n", |
|
psrc[0], psrc[1], psrc[2], |
|
psrc[3], psrc[4], psrc[5], |
|
psrc[6], psrc[7], psrc[8]); |
|
frm->cur_size = ptr - pdest; |
|
} else { |
|
if (frm->cur_size + purb->actual_length > MAX_FRAME_SIZE) { |
|
dev_info(&cam->udev->dev, |
|
"%s: buffer (%d bytes) too small to hold frame data. Discarding frame data.\n", |
|
__func__, MAX_FRAME_SIZE); |
|
} else { |
|
pdest += frm->cur_size; |
|
memcpy(pdest, psrc, purb->actual_length); |
|
frm->cur_size += purb->actual_length; |
|
} |
|
} |
|
/*_DBG("cur_size %lu urb size %d\n", frm->cur_size, |
|
purb->actual_length);*/ |
|
|
|
if (purb->actual_length < pipe_info->transfer_size) { |
|
_DBG("****************Buffer[%d]full*************\n", idx); |
|
cam->last_frame = cam->cur_frame; |
|
cam->cur_frame++; |
|
/* end of system frame ring buffer, start at zero */ |
|
if (cam->cur_frame == cam->buffer.dwFrames) |
|
cam->cur_frame = 0; |
|
|
|
/* frame ready */ |
|
/* go back to find the JPEG EOI marker */ |
|
ptr = pdest = frm->lpvbits; |
|
ptr += frm->cur_size - 2; |
|
while (ptr > pdest) { |
|
if (*ptr == 0xFF && *(ptr + 1) == 0xD9 |
|
&& *(ptr + 2) == 0xFF) |
|
break; |
|
ptr--; |
|
} |
|
if (ptr == pdest) |
|
DBG("No EOI marker\n"); |
|
|
|
/* Sometimes there is junk data in the middle of the picture, |
|
* we want to skip this bogus frames */ |
|
while (ptr > pdest) { |
|
if (*ptr == 0xFF && *(ptr + 1) == 0xFF |
|
&& *(ptr + 2) == 0xFF) |
|
break; |
|
ptr--; |
|
} |
|
if (ptr != pdest) { |
|
DBG("Bogus frame ? %d\n", ++(cam->nb)); |
|
} else if (cam->b_acquire) { |
|
/* we skip the 2 first frames which are usually buggy */ |
|
if (cam->skip) |
|
cam->skip--; |
|
else { |
|
_DBG("jpeg(%lu): %d %d %d %d %d %d %d %d\n", |
|
frm->cur_size, |
|
pdest[0], pdest[1], pdest[2], pdest[3], |
|
pdest[4], pdest[5], pdest[6], pdest[7]); |
|
|
|
zr364xx_got_frame(cam, frm->cur_size); |
|
} |
|
} |
|
cam->frame_count++; |
|
frm->ulState = ZR364XX_READ_IDLE; |
|
frm->cur_size = 0; |
|
} |
|
/* done successfully */ |
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_querycap(struct file *file, void *priv, |
|
struct v4l2_capability *cap) |
|
{ |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
|
|
strscpy(cap->driver, DRIVER_DESC, sizeof(cap->driver)); |
|
if (cam->udev->product) |
|
strscpy(cap->card, cam->udev->product, sizeof(cap->card)); |
|
strscpy(cap->bus_info, dev_name(&cam->udev->dev), |
|
sizeof(cap->bus_info)); |
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_enum_input(struct file *file, void *priv, |
|
struct v4l2_input *i) |
|
{ |
|
if (i->index != 0) |
|
return -EINVAL; |
|
strscpy(i->name, DRIVER_DESC " Camera", sizeof(i->name)); |
|
i->type = V4L2_INPUT_TYPE_CAMERA; |
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_g_input(struct file *file, void *priv, |
|
unsigned int *i) |
|
{ |
|
*i = 0; |
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_s_input(struct file *file, void *priv, |
|
unsigned int i) |
|
{ |
|
if (i != 0) |
|
return -EINVAL; |
|
return 0; |
|
} |
|
|
|
static int zr364xx_s_ctrl(struct v4l2_ctrl *ctrl) |
|
{ |
|
struct zr364xx_camera *cam = |
|
container_of(ctrl->handler, struct zr364xx_camera, ctrl_handler); |
|
int temp; |
|
|
|
switch (ctrl->id) { |
|
case V4L2_CID_BRIGHTNESS: |
|
/* hardware brightness */ |
|
send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0); |
|
temp = (0x60 << 8) + 127 - ctrl->val; |
|
send_control_msg(cam->udev, 1, temp, 0, NULL, 0); |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file, |
|
void *priv, struct v4l2_fmtdesc *f) |
|
{ |
|
if (f->index > 0) |
|
return -EINVAL; |
|
f->pixelformat = formats[0].fourcc; |
|
return 0; |
|
} |
|
|
|
static char *decode_fourcc(__u32 pixelformat, char *buf) |
|
{ |
|
buf[0] = pixelformat & 0xff; |
|
buf[1] = (pixelformat >> 8) & 0xff; |
|
buf[2] = (pixelformat >> 16) & 0xff; |
|
buf[3] = (pixelformat >> 24) & 0xff; |
|
buf[4] = '\0'; |
|
return buf; |
|
} |
|
|
|
static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
|
struct v4l2_format *f) |
|
{ |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
char pixelformat_name[5]; |
|
|
|
if (!cam) |
|
return -ENODEV; |
|
|
|
if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) { |
|
DBG("%s: unsupported pixelformat V4L2_PIX_FMT_%s\n", __func__, |
|
decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name)); |
|
return -EINVAL; |
|
} |
|
|
|
if (!(f->fmt.pix.width == 160 && f->fmt.pix.height == 120) && |
|
!(f->fmt.pix.width == 640 && f->fmt.pix.height == 480)) { |
|
f->fmt.pix.width = 320; |
|
f->fmt.pix.height = 240; |
|
} |
|
|
|
f->fmt.pix.field = V4L2_FIELD_NONE; |
|
f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
|
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
|
DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, |
|
decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), |
|
f->fmt.pix.field); |
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
|
struct v4l2_format *f) |
|
{ |
|
struct zr364xx_camera *cam; |
|
|
|
if (!file) |
|
return -ENODEV; |
|
cam = video_drvdata(file); |
|
|
|
f->fmt.pix.pixelformat = formats[0].fourcc; |
|
f->fmt.pix.field = V4L2_FIELD_NONE; |
|
f->fmt.pix.width = cam->width; |
|
f->fmt.pix.height = cam->height; |
|
f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
|
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
|
struct v4l2_format *f) |
|
{ |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
struct videobuf_queue *q = &cam->vb_vidq; |
|
char pixelformat_name[5]; |
|
int ret = zr364xx_vidioc_try_fmt_vid_cap(file, cam, f); |
|
int i; |
|
|
|
if (ret < 0) |
|
return ret; |
|
|
|
mutex_lock(&q->vb_lock); |
|
|
|
if (videobuf_queue_is_busy(&cam->vb_vidq)) { |
|
DBG("%s queue busy\n", __func__); |
|
ret = -EBUSY; |
|
goto out; |
|
} |
|
|
|
if (cam->owner) { |
|
DBG("%s can't change format after started\n", __func__); |
|
ret = -EBUSY; |
|
goto out; |
|
} |
|
|
|
cam->width = f->fmt.pix.width; |
|
cam->height = f->fmt.pix.height; |
|
DBG("%s: %dx%d mode selected\n", __func__, |
|
cam->width, cam->height); |
|
f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
|
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
|
cam->vb_vidq.field = f->fmt.pix.field; |
|
|
|
if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120) |
|
mode = 1; |
|
else if (f->fmt.pix.width == 640 && f->fmt.pix.height == 480) |
|
mode = 2; |
|
else |
|
mode = 0; |
|
|
|
m0d1[0] = mode; |
|
m1[2].value = 0xf000 + mode; |
|
m2[1].value = 0xf000 + mode; |
|
|
|
/* special case for METHOD3, the modes are different */ |
|
if (cam->method == METHOD3) { |
|
switch (mode) { |
|
case 1: |
|
m2[1].value = 0xf000 + 4; |
|
break; |
|
case 2: |
|
m2[1].value = 0xf000 + 0; |
|
break; |
|
default: |
|
m2[1].value = 0xf000 + 1; |
|
break; |
|
} |
|
} |
|
|
|
header2[437] = cam->height / 256; |
|
header2[438] = cam->height % 256; |
|
header2[439] = cam->width / 256; |
|
header2[440] = cam->width % 256; |
|
|
|
for (i = 0; init[cam->method][i].size != -1; i++) { |
|
ret = |
|
send_control_msg(cam->udev, 1, init[cam->method][i].value, |
|
0, init[cam->method][i].bytes, |
|
init[cam->method][i].size); |
|
if (ret < 0) { |
|
dev_err(&cam->udev->dev, |
|
"error during resolution change sequence: %d\n", i); |
|
goto out; |
|
} |
|
} |
|
|
|
/* Added some delay here, since opening/closing the camera quickly, |
|
* like Ekiga does during its startup, can crash the webcam |
|
*/ |
|
mdelay(100); |
|
cam->skip = 2; |
|
ret = 0; |
|
|
|
out: |
|
mutex_unlock(&q->vb_lock); |
|
|
|
DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, |
|
decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), |
|
f->fmt.pix.field); |
|
return ret; |
|
} |
|
|
|
static int zr364xx_vidioc_reqbufs(struct file *file, void *priv, |
|
struct v4l2_requestbuffers *p) |
|
{ |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
|
|
if (cam->owner && cam->owner != priv) |
|
return -EBUSY; |
|
return videobuf_reqbufs(&cam->vb_vidq, p); |
|
} |
|
|
|
static int zr364xx_vidioc_querybuf(struct file *file, |
|
void *priv, |
|
struct v4l2_buffer *p) |
|
{ |
|
int rc; |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
rc = videobuf_querybuf(&cam->vb_vidq, p); |
|
return rc; |
|
} |
|
|
|
static int zr364xx_vidioc_qbuf(struct file *file, |
|
void *priv, |
|
struct v4l2_buffer *p) |
|
{ |
|
int rc; |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
_DBG("%s\n", __func__); |
|
if (cam->owner && cam->owner != priv) |
|
return -EBUSY; |
|
rc = videobuf_qbuf(&cam->vb_vidq, p); |
|
return rc; |
|
} |
|
|
|
static int zr364xx_vidioc_dqbuf(struct file *file, |
|
void *priv, |
|
struct v4l2_buffer *p) |
|
{ |
|
int rc; |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
_DBG("%s\n", __func__); |
|
if (cam->owner && cam->owner != priv) |
|
return -EBUSY; |
|
rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK); |
|
return rc; |
|
} |
|
|
|
static void read_pipe_completion(struct urb *purb) |
|
{ |
|
struct zr364xx_pipeinfo *pipe_info; |
|
struct zr364xx_camera *cam; |
|
int pipe; |
|
|
|
pipe_info = purb->context; |
|
_DBG("%s %p, status %d\n", __func__, purb, purb->status); |
|
if (!pipe_info) { |
|
printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); |
|
return; |
|
} |
|
|
|
cam = pipe_info->cam; |
|
if (!cam) { |
|
printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); |
|
return; |
|
} |
|
|
|
/* if shutting down, do not resubmit, exit immediately */ |
|
if (purb->status == -ESHUTDOWN) { |
|
DBG("%s, err shutdown\n", __func__); |
|
pipe_info->err_count++; |
|
return; |
|
} |
|
|
|
if (pipe_info->state == 0) { |
|
DBG("exiting USB pipe\n"); |
|
return; |
|
} |
|
|
|
if (purb->actual_length > pipe_info->transfer_size) { |
|
dev_err(&cam->udev->dev, "wrong number of bytes\n"); |
|
return; |
|
} |
|
|
|
if (purb->status == 0) |
|
zr364xx_read_video_callback(cam, pipe_info, purb); |
|
else { |
|
pipe_info->err_count++; |
|
DBG("%s: failed URB %d\n", __func__, purb->status); |
|
} |
|
|
|
pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); |
|
|
|
/* reuse urb */ |
|
usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, |
|
pipe, |
|
pipe_info->transfer_buffer, |
|
pipe_info->transfer_size, |
|
read_pipe_completion, pipe_info); |
|
|
|
if (pipe_info->state != 0) { |
|
purb->status = usb_submit_urb(pipe_info->stream_urb, |
|
GFP_ATOMIC); |
|
|
|
if (purb->status) |
|
dev_err(&cam->udev->dev, |
|
"error submitting urb (error=%i)\n", |
|
purb->status); |
|
} else |
|
DBG("read pipe complete state 0\n"); |
|
} |
|
|
|
static int zr364xx_start_readpipe(struct zr364xx_camera *cam) |
|
{ |
|
int pipe; |
|
int retval; |
|
struct zr364xx_pipeinfo *pipe_info = cam->pipe; |
|
pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); |
|
DBG("%s: start pipe IN x%x\n", __func__, cam->read_endpoint); |
|
|
|
pipe_info->state = 1; |
|
pipe_info->err_count = 0; |
|
pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL); |
|
if (!pipe_info->stream_urb) |
|
return -ENOMEM; |
|
/* transfer buffer allocated in board_init */ |
|
usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, |
|
pipe, |
|
pipe_info->transfer_buffer, |
|
pipe_info->transfer_size, |
|
read_pipe_completion, pipe_info); |
|
|
|
DBG("submitting URB %p\n", pipe_info->stream_urb); |
|
retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL); |
|
if (retval) { |
|
printk(KERN_ERR KBUILD_MODNAME ": start read pipe failed\n"); |
|
return retval; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void zr364xx_stop_readpipe(struct zr364xx_camera *cam) |
|
{ |
|
struct zr364xx_pipeinfo *pipe_info; |
|
|
|
if (!cam) { |
|
printk(KERN_ERR KBUILD_MODNAME ": invalid device\n"); |
|
return; |
|
} |
|
DBG("stop read pipe\n"); |
|
pipe_info = cam->pipe; |
|
if (pipe_info) { |
|
if (pipe_info->state != 0) |
|
pipe_info->state = 0; |
|
|
|
if (pipe_info->stream_urb) { |
|
/* cancel urb */ |
|
usb_kill_urb(pipe_info->stream_urb); |
|
usb_free_urb(pipe_info->stream_urb); |
|
pipe_info->stream_urb = NULL; |
|
} |
|
} |
|
return; |
|
} |
|
|
|
/* starts acquisition process */ |
|
static int zr364xx_start_acquire(struct zr364xx_camera *cam) |
|
{ |
|
int j; |
|
|
|
DBG("start acquire\n"); |
|
|
|
cam->last_frame = -1; |
|
cam->cur_frame = 0; |
|
for (j = 0; j < FRAMES; j++) { |
|
cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; |
|
cam->buffer.frame[j].cur_size = 0; |
|
} |
|
cam->b_acquire = 1; |
|
return 0; |
|
} |
|
|
|
static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam) |
|
{ |
|
cam->b_acquire = 0; |
|
return 0; |
|
} |
|
|
|
static int zr364xx_prepare(struct zr364xx_camera *cam) |
|
{ |
|
int res; |
|
int i, j; |
|
|
|
for (i = 0; init[cam->method][i].size != -1; i++) { |
|
res = send_control_msg(cam->udev, 1, init[cam->method][i].value, |
|
0, init[cam->method][i].bytes, |
|
init[cam->method][i].size); |
|
if (res < 0) { |
|
dev_err(&cam->udev->dev, |
|
"error during open sequence: %d\n", i); |
|
return res; |
|
} |
|
} |
|
|
|
cam->skip = 2; |
|
cam->last_frame = -1; |
|
cam->cur_frame = 0; |
|
cam->frame_count = 0; |
|
for (j = 0; j < FRAMES; j++) { |
|
cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; |
|
cam->buffer.frame[j].cur_size = 0; |
|
} |
|
v4l2_ctrl_handler_setup(&cam->ctrl_handler); |
|
return 0; |
|
} |
|
|
|
static int zr364xx_vidioc_streamon(struct file *file, void *priv, |
|
enum v4l2_buf_type type) |
|
{ |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
int res; |
|
|
|
DBG("%s\n", __func__); |
|
|
|
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
|
return -EINVAL; |
|
|
|
if (cam->owner && cam->owner != priv) |
|
return -EBUSY; |
|
|
|
res = zr364xx_prepare(cam); |
|
if (res) |
|
return res; |
|
res = videobuf_streamon(&cam->vb_vidq); |
|
if (res == 0) { |
|
zr364xx_start_acquire(cam); |
|
cam->owner = file->private_data; |
|
} |
|
return res; |
|
} |
|
|
|
static int zr364xx_vidioc_streamoff(struct file *file, void *priv, |
|
enum v4l2_buf_type type) |
|
{ |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
|
|
DBG("%s\n", __func__); |
|
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
|
return -EINVAL; |
|
if (cam->owner && cam->owner != priv) |
|
return -EBUSY; |
|
zr364xx_stop_acquire(cam); |
|
return videobuf_streamoff(&cam->vb_vidq); |
|
} |
|
|
|
|
|
/* open the camera */ |
|
static int zr364xx_open(struct file *file) |
|
{ |
|
struct zr364xx_camera *cam = video_drvdata(file); |
|
int err; |
|
|
|
DBG("%s\n", __func__); |
|
|
|
if (mutex_lock_interruptible(&cam->lock)) |
|
return -ERESTARTSYS; |
|
|
|
err = v4l2_fh_open(file); |
|
if (err) |
|
goto out; |
|
|
|
/* Added some delay here, since opening/closing the camera quickly, |
|
* like Ekiga does during its startup, can crash the webcam |
|
*/ |
|
mdelay(100); |
|
err = 0; |
|
|
|
out: |
|
mutex_unlock(&cam->lock); |
|
DBG("%s: %d\n", __func__, err); |
|
return err; |
|
} |
|
|
|
static void zr364xx_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) |
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{ |
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struct zr364xx_camera *cam = usb_get_intfdata(intf); |
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|
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cam->was_streaming = cam->b_acquire; |
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if (!cam->was_streaming) |
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return 0; |
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zr364xx_stop_acquire(cam); |
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zr364xx_stop_readpipe(cam); |
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return 0; |
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} |
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|
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static int zr364xx_resume(struct usb_interface *intf) |
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{ |
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struct zr364xx_camera *cam = usb_get_intfdata(intf); |
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int res; |
|
|
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if (!cam->was_streaming) |
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return 0; |
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|
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res = zr364xx_start_readpipe(cam); |
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if (res) |
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return res; |
|
|
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res = zr364xx_prepare(cam); |
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if (res) |
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goto err_prepare; |
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|
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zr364xx_start_acquire(cam); |
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return 0; |
|
|
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err_prepare: |
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zr364xx_stop_readpipe(cam); |
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return res; |
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} |
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#endif |
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|
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/**********************/ |
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/* Module integration */ |
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/**********************/ |
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|
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static struct usb_driver zr364xx_driver = { |
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.name = "zr364xx", |
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.probe = zr364xx_probe, |
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.disconnect = zr364xx_disconnect, |
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#ifdef CONFIG_PM |
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.suspend = zr364xx_suspend, |
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.resume = zr364xx_resume, |
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.reset_resume = zr364xx_resume, |
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#endif |
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.id_table = device_table |
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}; |
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|
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module_usb_driver(zr364xx_driver); |
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|
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MODULE_AUTHOR(DRIVER_AUTHOR); |
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MODULE_DESCRIPTION(DRIVER_DESC); |
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MODULE_LICENSE("GPL"); |
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MODULE_VERSION(DRIVER_VERSION);
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