| /* |
| * Zoran 364xx based USB webcam module version 0.73 |
| * |
| * Allows you to use your USB webcam with V4L2 applications |
| * This is still in heavy developpement ! |
| * |
| * Copyright (C) 2004 Antoine Jacquet <royale@zerezo.com> |
| * http://royale.zerezo.com/zr364xx/ |
| * |
| * Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers |
| * V4L2 version inspired by meye.c driver |
| * |
| * Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/usb.h> |
| #include <linux/vmalloc.h> |
| #include <linux/slab.h> |
| #include <linux/proc_fs.h> |
| #include <linux/highmem.h> |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-ctrls.h> |
| #include <media/v4l2-fh.h> |
| #include <media/v4l2-event.h> |
| #include <media/videobuf-vmalloc.h> |
| |
| |
| /* Version Information */ |
| #define DRIVER_VERSION "0.7.4" |
| #define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/" |
| #define DRIVER_DESC "Zoran 364xx" |
| |
| |
| /* Camera */ |
| #define FRAMES 1 |
| #define MAX_FRAME_SIZE 200000 |
| #define BUFFER_SIZE 0x1000 |
| #define CTRL_TIMEOUT 500 |
| |
| #define ZR364XX_DEF_BUFS 4 |
| #define ZR364XX_READ_IDLE 0 |
| #define ZR364XX_READ_FRAME 1 |
| |
| /* Debug macro */ |
| #define DBG(fmt, args...) \ |
| do { \ |
| if (debug) { \ |
| printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \ |
| } \ |
| } while (0) |
| |
| /*#define FULL_DEBUG 1*/ |
| #ifdef FULL_DEBUG |
| #define _DBG DBG |
| #else |
| #define _DBG(fmt, args...) |
| #endif |
| |
| /* Init methods, need to find nicer names for these |
| * the exact names of the chipsets would be the best if someone finds it */ |
| #define METHOD0 0 |
| #define METHOD1 1 |
| #define METHOD2 2 |
| #define METHOD3 3 |
| |
| |
| /* Module parameters */ |
| static int debug; |
| static int mode; |
| |
| |
| /* Module parameters interface */ |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug, "Debug level"); |
| module_param(mode, int, 0644); |
| MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480"); |
| |
| |
| /* Devices supported by this driver |
| * .driver_info contains the init method used by the camera */ |
| static const struct usb_device_id device_table[] = { |
| {USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 }, |
| {USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 }, |
| {USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 }, |
| {USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 }, |
| {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 }, |
| {USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 }, |
| {USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 }, |
| {USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 }, |
| {USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 }, |
| {} /* Terminating entry */ |
| }; |
| |
| MODULE_DEVICE_TABLE(usb, device_table); |
| |
| /* frame structure */ |
| struct zr364xx_framei { |
| unsigned long ulState; /* ulState:ZR364XX_READ_IDLE, |
| ZR364XX_READ_FRAME */ |
| void *lpvbits; /* image data */ |
| unsigned long cur_size; /* current data copied to it */ |
| }; |
| |
| /* image buffer structure */ |
| struct zr364xx_bufferi { |
| unsigned long dwFrames; /* number of frames in buffer */ |
| struct zr364xx_framei frame[FRAMES]; /* array of FRAME structures */ |
| }; |
| |
| struct zr364xx_dmaqueue { |
| struct list_head active; |
| struct zr364xx_camera *cam; |
| }; |
| |
| struct zr364xx_pipeinfo { |
| u32 transfer_size; |
| u8 *transfer_buffer; |
| u32 state; |
| void *stream_urb; |
| void *cam; /* back pointer to zr364xx_camera struct */ |
| u32 err_count; |
| u32 idx; |
| }; |
| |
| struct zr364xx_fmt { |
| char *name; |
| u32 fourcc; |
| int depth; |
| }; |
| |
| /* image formats. */ |
| static const struct zr364xx_fmt formats[] = { |
| { |
| .name = "JPG", |
| .fourcc = V4L2_PIX_FMT_JPEG, |
| .depth = 24 |
| } |
| }; |
| |
| /* Camera stuff */ |
| struct zr364xx_camera { |
| struct usb_device *udev; /* save off the usb device pointer */ |
| struct usb_interface *interface;/* the interface for this device */ |
| struct v4l2_device v4l2_dev; |
| struct v4l2_ctrl_handler ctrl_handler; |
| struct video_device vdev; /* v4l video device */ |
| struct v4l2_fh *owner; /* owns the streaming */ |
| int nb; |
| struct zr364xx_bufferi buffer; |
| int skip; |
| int width; |
| int height; |
| int method; |
| struct mutex lock; |
| |
| spinlock_t slock; |
| struct zr364xx_dmaqueue vidq; |
| int last_frame; |
| int cur_frame; |
| unsigned long frame_count; |
| int b_acquire; |
| struct zr364xx_pipeinfo pipe[1]; |
| |
| u8 read_endpoint; |
| |
| const struct zr364xx_fmt *fmt; |
| struct videobuf_queue vb_vidq; |
| bool was_streaming; |
| }; |
| |
| /* buffer for one video frame */ |
| struct zr364xx_buffer { |
| /* common v4l buffer stuff -- must be first */ |
| struct videobuf_buffer vb; |
| const struct zr364xx_fmt *fmt; |
| }; |
| |
| /* function used to send initialisation commands to the camera */ |
| static int send_control_msg(struct usb_device *udev, u8 request, u16 value, |
| u16 index, unsigned char *cp, u16 size) |
| { |
| int status; |
| |
| unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL); |
| if (!transfer_buffer) |
| return -ENOMEM; |
| |
| memcpy(transfer_buffer, cp, size); |
| |
| status = usb_control_msg(udev, |
| usb_sndctrlpipe(udev, 0), |
| request, |
| USB_DIR_OUT | USB_TYPE_VENDOR | |
| USB_RECIP_DEVICE, value, index, |
| transfer_buffer, size, CTRL_TIMEOUT); |
| |
| kfree(transfer_buffer); |
| return status; |
| } |
| |
| |
| /* Control messages sent to the camera to initialize it |
| * and launch the capture */ |
| typedef struct { |
| unsigned int value; |
| unsigned int size; |
| unsigned char *bytes; |
| } message; |
| |
| /* method 0 */ |
| static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 }; |
| static unsigned char m0d3[] = { 0, 0 }; |
| static message m0[] = { |
| {0x1f30, 0, NULL}, |
| {0xd000, 0, NULL}, |
| {0x3370, sizeof(m0d1), m0d1}, |
| {0x2000, 0, NULL}, |
| {0x2f0f, 0, NULL}, |
| {0x2610, sizeof(m0d2), m0d2}, |
| {0xe107, 0, NULL}, |
| {0x2502, 0, NULL}, |
| {0x1f70, 0, NULL}, |
| {0xd000, 0, NULL}, |
| {0x9a01, sizeof(m0d3), m0d3}, |
| {-1, -1, NULL} |
| }; |
| |
| /* method 1 */ |
| static unsigned char m1d1[] = { 0xff, 0xff }; |
| static unsigned char m1d2[] = { 0x00, 0x00 }; |
| static message m1[] = { |
| {0x1f30, 0, NULL}, |
| {0xd000, 0, NULL}, |
| {0xf000, 0, NULL}, |
| {0x2000, 0, NULL}, |
| {0x2f0f, 0, NULL}, |
| {0x2650, 0, NULL}, |
| {0xe107, 0, NULL}, |
| {0x2502, sizeof(m1d1), m1d1}, |
| {0x1f70, 0, NULL}, |
| {0xd000, 0, NULL}, |
| {0xd000, 0, NULL}, |
| {0xd000, 0, NULL}, |
| {0x9a01, sizeof(m1d2), m1d2}, |
| {-1, -1, NULL} |
| }; |
| |
| /* method 2 */ |
| static unsigned char m2d1[] = { 0xff, 0xff }; |
| static message m2[] = { |
| {0x1f30, 0, NULL}, |
| {0xf000, 0, NULL}, |
| {0x2000, 0, NULL}, |
| {0x2f0f, 0, NULL}, |
| {0x2650, 0, NULL}, |
| {0xe107, 0, NULL}, |
| {0x2502, sizeof(m2d1), m2d1}, |
| {0x1f70, 0, NULL}, |
| {-1, -1, NULL} |
| }; |
| |
| /* init table */ |
| static message *init[4] = { m0, m1, m2, m2 }; |
| |
| |
| /* JPEG static data in header (Huffman table, etc) */ |
| static unsigned char header1[] = { |
| 0xFF, 0xD8, |
| /* |
| 0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F', |
| 0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88, |
| */ |
| 0xFF, 0xDB, 0x00, 0x84 |
| }; |
| static unsigned char header2[] = { |
| 0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, |
| 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, |
| 0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, |
| 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01, |
| 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, |
| 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, |
| 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33, |
| 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25, |
| 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, |
| 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, |
| 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, |
| 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, |
| 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, |
| 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, |
| 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, |
| 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2, |
| 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, |
| 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F, |
| 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
| 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, |
| 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5, |
| 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, |
| 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, |
| 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, |
| 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, |
| 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, |
| 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, |
| 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, |
| 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, |
| 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, |
| 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, |
| 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, |
| 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, |
| 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, |
| 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, |
| 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, |
| 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, |
| 0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01, |
| 0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, |
| 0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, |
| 0x00, 0x3F, 0x00 |
| }; |
| static unsigned char header3; |
| |
| /* ------------------------------------------------------------------ |
| Videobuf operations |
| ------------------------------------------------------------------*/ |
| |
| static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, |
| unsigned int *size) |
| { |
| struct zr364xx_camera *cam = vq->priv_data; |
| |
| *size = cam->width * cam->height * (cam->fmt->depth >> 3); |
| |
| if (*count == 0) |
| *count = ZR364XX_DEF_BUFS; |
| |
| if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024) |
| *count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size; |
| |
| return 0; |
| } |
| |
| static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf) |
| { |
| _DBG("%s\n", __func__); |
| |
| BUG_ON(in_interrupt()); |
| |
| videobuf_vmalloc_free(&buf->vb); |
| buf->vb.state = VIDEOBUF_NEEDS_INIT; |
| } |
| |
| static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, |
| enum v4l2_field field) |
| { |
| struct zr364xx_camera *cam = vq->priv_data; |
| struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, |
| vb); |
| int rc; |
| |
| DBG("%s, field=%d, fmt name = %s\n", __func__, field, |
| cam->fmt ? cam->fmt->name : ""); |
| 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; |
| v4l2_get_timestamp(&buf->vb.ts); |
| 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); |
| v4l2_get_timestamp(&buf->vb.ts); |
| 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 = -1; |
| struct zr364xx_framei *frm; |
| int i = 0; |
| unsigned char *ptr = NULL; |
| |
| _DBG("buffer to user\n"); |
| idx = cam->cur_frame; |
| frm = &cam->buffer.frame[idx]; |
| |
| /* 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)); |
| strscpy(cap->card, cam->udev->product, sizeof(cap->card)); |
| strscpy(cap->bus_info, dev_name(&cam->udev->dev), |
| sizeof(cap->bus_info)); |
| cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | |
| V4L2_CAP_READWRITE | |
| V4L2_CAP_STREAMING; |
| cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
| |
| 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->flags = V4L2_FMT_FLAG_COMPRESSED; |
| strscpy(f->description, formats[0].name, sizeof(f->description)); |
| f->pixelformat = formats[0].fourcc; |
| return 0; |
| } |
| |
| static char *decode_fourcc(__u32 pixelformat, char *buf) |
| { |
| buf[0] = pixelformat & 0xff; |
| buf[1] = (pixelformat >> 8) & 0xff; |
| buf[2] = (pixelformat >> 16) & 0xff; |
| buf[3] = (pixelformat >> 24) & 0xff; |
| buf[4] = '\0'; |
| return buf; |
| } |
| |
| static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| char pixelformat_name[5]; |
| |
| if (!cam) |
| return -ENODEV; |
| |
| if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) { |
| DBG("%s: unsupported pixelformat V4L2_PIX_FMT_%s\n", __func__, |
| decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name)); |
| return -EINVAL; |
| } |
| |
| if (!(f->fmt.pix.width == 160 && f->fmt.pix.height == 120) && |
| !(f->fmt.pix.width == 640 && f->fmt.pix.height == 480)) { |
| f->fmt.pix.width = 320; |
| f->fmt.pix.height = 240; |
| } |
| |
| f->fmt.pix.field = V4L2_FIELD_NONE; |
| f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
| f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
| f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
| DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, |
| decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), |
| f->fmt.pix.field); |
| return 0; |
| } |
| |
| static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct zr364xx_camera *cam; |
| |
| if (!file) |
| return -ENODEV; |
| cam = video_drvdata(file); |
| |
| f->fmt.pix.pixelformat = formats[0].fourcc; |
| f->fmt.pix.field = V4L2_FIELD_NONE; |
| f->fmt.pix.width = cam->width; |
| f->fmt.pix.height = cam->height; |
| f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
| f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
| f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
| return 0; |
| } |
| |
| static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| struct videobuf_queue *q = &cam->vb_vidq; |
| char pixelformat_name[5]; |
| int ret = zr364xx_vidioc_try_fmt_vid_cap(file, cam, f); |
| int i; |
| |
| if (ret < 0) |
| return ret; |
| |
| mutex_lock(&q->vb_lock); |
| |
| if (videobuf_queue_is_busy(&cam->vb_vidq)) { |
| DBG("%s queue busy\n", __func__); |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| if (cam->owner) { |
| DBG("%s can't change format after started\n", __func__); |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| cam->width = f->fmt.pix.width; |
| cam->height = f->fmt.pix.height; |
| DBG("%s: %dx%d mode selected\n", __func__, |
| cam->width, cam->height); |
| f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
| f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
| f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
| cam->vb_vidq.field = f->fmt.pix.field; |
| |
| if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120) |
| mode = 1; |
| else if (f->fmt.pix.width == 640 && f->fmt.pix.height == 480) |
| mode = 2; |
| else |
| mode = 0; |
| |
| m0d1[0] = mode; |
| m1[2].value = 0xf000 + mode; |
| m2[1].value = 0xf000 + mode; |
| |
| /* special case for METHOD3, the modes are different */ |
| if (cam->method == METHOD3) { |
| switch (mode) { |
| case 1: |
| m2[1].value = 0xf000 + 4; |
| break; |
| case 2: |
| m2[1].value = 0xf000 + 0; |
| break; |
| default: |
| m2[1].value = 0xf000 + 1; |
| break; |
| } |
| } |
| |
| header2[437] = cam->height / 256; |
| header2[438] = cam->height % 256; |
| header2[439] = cam->width / 256; |
| header2[440] = cam->width % 256; |
| |
| for (i = 0; init[cam->method][i].size != -1; i++) { |
| ret = |
| send_control_msg(cam->udev, 1, init[cam->method][i].value, |
| 0, init[cam->method][i].bytes, |
| init[cam->method][i].size); |
| if (ret < 0) { |
| dev_err(&cam->udev->dev, |
| "error during resolution change sequence: %d\n", i); |
| goto out; |
| } |
| } |
| |
| /* Added some delay here, since opening/closing the camera quickly, |
| * like Ekiga does during its startup, can crash the webcam |
| */ |
| mdelay(100); |
| cam->skip = 2; |
| ret = 0; |
| |
| out: |
| mutex_unlock(&q->vb_lock); |
| |
| DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, |
| decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), |
| f->fmt.pix.field); |
| return ret; |
| } |
| |
| static int zr364xx_vidioc_reqbufs(struct file *file, void *priv, |
| struct v4l2_requestbuffers *p) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| |
| if (cam->owner && cam->owner != priv) |
| return -EBUSY; |
| return videobuf_reqbufs(&cam->vb_vidq, p); |
| } |
| |
| static int zr364xx_vidioc_querybuf(struct file *file, |
| void *priv, |
| struct v4l2_buffer *p) |
| { |
| int rc; |
| struct zr364xx_camera *cam = video_drvdata(file); |
| rc = videobuf_querybuf(&cam->vb_vidq, p); |
| return rc; |
| } |
| |
| static int zr364xx_vidioc_qbuf(struct file *file, |
| void *priv, |
| struct v4l2_buffer *p) |
| { |
| int rc; |
| struct zr364xx_camera *cam = video_drvdata(file); |
| _DBG("%s\n", __func__); |
| if (cam->owner && cam->owner != priv) |
| return -EBUSY; |
| rc = videobuf_qbuf(&cam->vb_vidq, p); |
| return rc; |
| } |
| |
| static int zr364xx_vidioc_dqbuf(struct file *file, |
| void *priv, |
| struct v4l2_buffer *p) |
| { |
| int rc; |
| struct zr364xx_camera *cam = video_drvdata(file); |
| _DBG("%s\n", __func__); |
| if (cam->owner && cam->owner != priv) |
| return -EBUSY; |
| rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK); |
| return rc; |
| } |
| |
| static void read_pipe_completion(struct urb *purb) |
| { |
| struct zr364xx_pipeinfo *pipe_info; |
| struct zr364xx_camera *cam; |
| int pipe; |
| |
| pipe_info = purb->context; |
| _DBG("%s %p, status %d\n", __func__, purb, purb->status); |
| if (!pipe_info) { |
| printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); |
| return; |
| } |
| |
| cam = pipe_info->cam; |
| if (!cam) { |
| printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); |
| return; |
| } |
| |
| /* if shutting down, do not resubmit, exit immediately */ |
| if (purb->status == -ESHUTDOWN) { |
| DBG("%s, err shutdown\n", __func__); |
| pipe_info->err_count++; |
| return; |
| } |
| |
| if (pipe_info->state == 0) { |
| DBG("exiting USB pipe\n"); |
| return; |
| } |
| |
| if (purb->actual_length > pipe_info->transfer_size) { |
| dev_err(&cam->udev->dev, "wrong number of bytes\n"); |
| return; |
| } |
| |
| if (purb->status == 0) |
| zr364xx_read_video_callback(cam, pipe_info, purb); |
| else { |
| pipe_info->err_count++; |
| DBG("%s: failed URB %d\n", __func__, purb->status); |
| } |
| |
| pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); |
| |
| /* reuse urb */ |
| usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, |
| pipe, |
| pipe_info->transfer_buffer, |
| pipe_info->transfer_size, |
| read_pipe_completion, pipe_info); |
| |
| if (pipe_info->state != 0) { |
| purb->status = usb_submit_urb(pipe_info->stream_urb, |
| GFP_ATOMIC); |
| |
| if (purb->status) |
| dev_err(&cam->udev->dev, |
| "error submitting urb (error=%i)\n", |
| purb->status); |
| } else |
| DBG("read pipe complete state 0\n"); |
| } |
| |
| static int zr364xx_start_readpipe(struct zr364xx_camera *cam) |
| { |
| int pipe; |
| int retval; |
| struct zr364xx_pipeinfo *pipe_info = cam->pipe; |
| pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); |
| DBG("%s: start pipe IN x%x\n", __func__, cam->read_endpoint); |
| |
| pipe_info->state = 1; |
| pipe_info->err_count = 0; |
| pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!pipe_info->stream_urb) |
| return -ENOMEM; |
| /* transfer buffer allocated in board_init */ |
| usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, |
| pipe, |
| pipe_info->transfer_buffer, |
| pipe_info->transfer_size, |
| read_pipe_completion, pipe_info); |
| |
| DBG("submitting URB %p\n", pipe_info->stream_urb); |
| retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL); |
| if (retval) { |
| printk(KERN_ERR KBUILD_MODNAME ": start read pipe failed\n"); |
| return retval; |
| } |
| |
| return 0; |
| } |
| |
| static void zr364xx_stop_readpipe(struct zr364xx_camera *cam) |
| { |
| struct zr364xx_pipeinfo *pipe_info; |
| |
| if (!cam) { |
| printk(KERN_ERR KBUILD_MODNAME ": invalid device\n"); |
| return; |
| } |
| DBG("stop read pipe\n"); |
| pipe_info = cam->pipe; |
| if (pipe_info) { |
| if (pipe_info->state != 0) |
| pipe_info->state = 0; |
| |
| if (pipe_info->stream_urb) { |
| /* cancel urb */ |
| usb_kill_urb(pipe_info->stream_urb); |
| usb_free_urb(pipe_info->stream_urb); |
| pipe_info->stream_urb = NULL; |
| } |
| } |
| return; |
| } |
| |
| /* starts acquisition process */ |
| static int zr364xx_start_acquire(struct zr364xx_camera *cam) |
| { |
| int j; |
| |
| DBG("start acquire\n"); |
| |
| cam->last_frame = -1; |
| cam->cur_frame = 0; |
| for (j = 0; j < FRAMES; j++) { |
| cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; |
| cam->buffer.frame[j].cur_size = 0; |
| } |
| cam->b_acquire = 1; |
| return 0; |
| } |
| |
| static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam) |
| { |
| cam->b_acquire = 0; |
| return 0; |
| } |
| |
| static int zr364xx_prepare(struct zr364xx_camera *cam) |
| { |
| int res; |
| int i, j; |
| |
| for (i = 0; init[cam->method][i].size != -1; i++) { |
| res = send_control_msg(cam->udev, 1, init[cam->method][i].value, |
| 0, init[cam->method][i].bytes, |
| init[cam->method][i].size); |
| if (res < 0) { |
| dev_err(&cam->udev->dev, |
| "error during open sequence: %d\n", i); |
| return res; |
| } |
| } |
| |
| cam->skip = 2; |
| cam->last_frame = -1; |
| cam->cur_frame = 0; |
| cam->frame_count = 0; |
| for (j = 0; j < FRAMES; j++) { |
| cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; |
| cam->buffer.frame[j].cur_size = 0; |
| } |
| v4l2_ctrl_handler_setup(&cam->ctrl_handler); |
| return 0; |
| } |
| |
| static int zr364xx_vidioc_streamon(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| int res; |
| |
| DBG("%s\n", __func__); |
| |
| if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| if (cam->owner && cam->owner != priv) |
| return -EBUSY; |
| |
| res = zr364xx_prepare(cam); |
| if (res) |
| return res; |
| res = videobuf_streamon(&cam->vb_vidq); |
| if (res == 0) { |
| zr364xx_start_acquire(cam); |
| cam->owner = file->private_data; |
| } |
| return res; |
| } |
| |
| static int zr364xx_vidioc_streamoff(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| |
| DBG("%s\n", __func__); |
| if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| if (cam->owner && cam->owner != priv) |
| return -EBUSY; |
| zr364xx_stop_acquire(cam); |
| return videobuf_streamoff(&cam->vb_vidq); |
| } |
| |
| |
| /* open the camera */ |
| static int zr364xx_open(struct file *file) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| int err; |
| |
| DBG("%s\n", __func__); |
| |
| if (mutex_lock_interruptible(&cam->lock)) |
| return -ERESTARTSYS; |
| |
| err = v4l2_fh_open(file); |
| if (err) |
| goto out; |
| |
| /* Added some delay here, since opening/closing the camera quickly, |
| * like Ekiga does during its startup, can crash the webcam |
| */ |
| mdelay(100); |
| err = 0; |
| |
| out: |
| mutex_unlock(&cam->lock); |
| DBG("%s: %d\n", __func__, err); |
| return err; |
| } |
| |
| static void zr364xx_release(struct v4l2_device *v4l2_dev) |
| { |
| struct zr364xx_camera *cam = |
| container_of(v4l2_dev, struct zr364xx_camera, v4l2_dev); |
| unsigned long i; |
| |
| v4l2_device_unregister(&cam->v4l2_dev); |
| |
| videobuf_mmap_free(&cam->vb_vidq); |
| |
| /* release sys buffers */ |
| for (i = 0; i < FRAMES; i++) { |
| if (cam->buffer.frame[i].lpvbits) { |
| DBG("vfree %p\n", cam->buffer.frame[i].lpvbits); |
| vfree(cam->buffer.frame[i].lpvbits); |
| } |
| cam->buffer.frame[i].lpvbits = NULL; |
| } |
| |
| v4l2_ctrl_handler_free(&cam->ctrl_handler); |
| /* release transfer buffer */ |
| kfree(cam->pipe->transfer_buffer); |
| kfree(cam); |
| } |
| |
| /* release the camera */ |
| static int zr364xx_close(struct file *file) |
| { |
| struct zr364xx_camera *cam; |
| struct usb_device *udev; |
| int i; |
| |
| DBG("%s\n", __func__); |
| cam = video_drvdata(file); |
| |
| mutex_lock(&cam->lock); |
| udev = cam->udev; |
| |
| if (file->private_data == cam->owner) { |
| /* turn off stream */ |
| if (cam->b_acquire) |
| zr364xx_stop_acquire(cam); |
| videobuf_streamoff(&cam->vb_vidq); |
| |
| for (i = 0; i < 2; i++) { |
| send_control_msg(udev, 1, init[cam->method][i].value, |
| 0, init[cam->method][i].bytes, |
| init[cam->method][i].size); |
| } |
| cam->owner = NULL; |
| } |
| |
| /* Added some delay here, since opening/closing the camera quickly, |
| * like Ekiga does during its startup, can crash the webcam |
| */ |
| mdelay(100); |
| mutex_unlock(&cam->lock); |
| return v4l2_fh_release(file); |
| } |
| |
| |
| static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| int ret; |
| |
| if (!cam) { |
| DBG("%s: cam == NULL\n", __func__); |
| return -ENODEV; |
| } |
| DBG("mmap called, vma=%p\n", vma); |
| |
| ret = videobuf_mmap_mapper(&cam->vb_vidq, vma); |
| |
| DBG("vma start=0x%08lx, size=%ld, ret=%d\n", |
| (unsigned long)vma->vm_start, |
| (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret); |
| return ret; |
| } |
| |
| static __poll_t zr364xx_poll(struct file *file, |
| struct poll_table_struct *wait) |
| { |
| struct zr364xx_camera *cam = video_drvdata(file); |
| struct videobuf_queue *q = &cam->vb_vidq; |
| __poll_t res = v4l2_ctrl_poll(file, wait); |
| |
| _DBG("%s\n", __func__); |
| |
| return res | videobuf_poll_stream(file, q, wait); |
| } |
| |
| static const struct v4l2_ctrl_ops zr364xx_ctrl_ops = { |
| .s_ctrl = zr364xx_s_ctrl, |
| }; |
| |
| static const struct v4l2_file_operations zr364xx_fops = { |
| .owner = THIS_MODULE, |
| .open = zr364xx_open, |
| .release = zr364xx_close, |
| .read = zr364xx_read, |
| .mmap = zr364xx_mmap, |
| .unlocked_ioctl = video_ioctl2, |
| .poll = zr364xx_poll, |
| }; |
| |
| static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = { |
| .vidioc_querycap = zr364xx_vidioc_querycap, |
| .vidioc_enum_fmt_vid_cap = zr364xx_vidioc_enum_fmt_vid_cap, |
| .vidioc_try_fmt_vid_cap = zr364xx_vidioc_try_fmt_vid_cap, |
| .vidioc_s_fmt_vid_cap = zr364xx_vidioc_s_fmt_vid_cap, |
| .vidioc_g_fmt_vid_cap = zr364xx_vidioc_g_fmt_vid_cap, |
| .vidioc_enum_input = zr364xx_vidioc_enum_input, |
| .vidioc_g_input = zr364xx_vidioc_g_input, |
| .vidioc_s_input = zr364xx_vidioc_s_input, |
| .vidioc_streamon = zr364xx_vidioc_streamon, |
| .vidioc_streamoff = zr364xx_vidioc_streamoff, |
| .vidioc_reqbufs = zr364xx_vidioc_reqbufs, |
| .vidioc_querybuf = zr364xx_vidioc_querybuf, |
| .vidioc_qbuf = zr364xx_vidioc_qbuf, |
| .vidioc_dqbuf = zr364xx_vidioc_dqbuf, |
| .vidioc_log_status = v4l2_ctrl_log_status, |
| .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
| }; |
| |
| static const struct video_device zr364xx_template = { |
| .name = DRIVER_DESC, |
| .fops = &zr364xx_fops, |
| .ioctl_ops = &zr364xx_ioctl_ops, |
| .release = video_device_release_empty, |
| }; |
| |
| |
| |
| /*******************/ |
| /* USB integration */ |
| /*******************/ |
| static int zr364xx_board_init(struct zr364xx_camera *cam) |
| { |
| struct zr364xx_pipeinfo *pipe = cam->pipe; |
| unsigned long i; |
| |
| DBG("board init: %p\n", cam); |
| memset(pipe, 0, sizeof(*pipe)); |
| pipe->cam = cam; |
| pipe->transfer_size = BUFFER_SIZE; |
| |
| pipe->transfer_buffer = kzalloc(pipe->transfer_size, |
| GFP_KERNEL); |
| if (!pipe->transfer_buffer) { |
| DBG("out of memory!\n"); |
| return -ENOMEM; |
| } |
| |
| cam->b_acquire = 0; |
| cam->frame_count = 0; |
| |
| /*** start create system buffers ***/ |
| for (i = 0; i < FRAMES; i++) { |
| /* always allocate maximum size for system buffers */ |
| cam->buffer.frame[i].lpvbits = vmalloc(MAX_FRAME_SIZE); |
| |
| DBG("valloc %p, idx %lu, pdata %p\n", |
| &cam->buffer.frame[i], i, |
| cam->buffer.frame[i].lpvbits); |
| if (!cam->buffer.frame[i].lpvbits) { |
| printk(KERN_INFO KBUILD_MODNAME ": out of memory. Using less frames\n"); |
| break; |
| } |
| } |
| |
| if (i == 0) { |
| printk(KERN_INFO KBUILD_MODNAME ": out of memory. Aborting\n"); |
| kfree(cam->pipe->transfer_buffer); |
| cam->pipe->transfer_buffer = NULL; |
| return -ENOMEM; |
| } else |
| cam->buffer.dwFrames = i; |
| |
| /* make sure internal states are set */ |
| for (i = 0; i < FRAMES; i++) { |
| cam->buffer.frame[i].ulState = ZR364XX_READ_IDLE; |
| cam->buffer.frame[i].cur_size = 0; |
| } |
| |
| cam->cur_frame = 0; |
| cam->last_frame = -1; |
| /*** end create system buffers ***/ |
| |
| /* start read pipe */ |
| zr364xx_start_readpipe(cam); |
| DBG(": board initialized\n"); |
| return 0; |
| } |
| |
| static int zr364xx_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *udev = interface_to_usbdev(intf); |
| struct zr364xx_camera *cam = NULL; |
| struct usb_host_interface *iface_desc; |
| struct usb_endpoint_descriptor *endpoint; |
| struct v4l2_ctrl_handler *hdl; |
| int err; |
| int i; |
| |
| DBG("probing...\n"); |
| |
| dev_info(&intf->dev, DRIVER_DESC " compatible webcam plugged\n"); |
| dev_info(&intf->dev, "model %04x:%04x detected\n", |
| le16_to_cpu(udev->descriptor.idVendor), |
| le16_to_cpu(udev->descriptor.idProduct)); |
| |
| cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
| if (!cam) |
| return -ENOMEM; |
| |
| cam->v4l2_dev.release = zr364xx_release; |
| err = v4l2_device_register(&intf->dev, &cam->v4l2_dev); |
| if (err < 0) { |
| dev_err(&udev->dev, "couldn't register v4l2_device\n"); |
| kfree(cam); |
| return err; |
| } |
| hdl = &cam->ctrl_handler; |
| v4l2_ctrl_handler_init(hdl, 1); |
| v4l2_ctrl_new_std(hdl, &zr364xx_ctrl_ops, |
| V4L2_CID_BRIGHTNESS, 0, 127, 1, 64); |
| if (hdl->error) { |
| err = hdl->error; |
| dev_err(&udev->dev, "couldn't register control\n"); |
| goto fail; |
| } |
| /* save the init method used by this camera */ |
| cam->method = id->driver_info; |
| mutex_init(&cam->lock); |
| cam->vdev = zr364xx_template; |
| cam->vdev.lock = &cam->lock; |
| cam->vdev.v4l2_dev = &cam->v4l2_dev; |
| cam->vdev.ctrl_handler = &cam->ctrl_handler; |
| video_set_drvdata(&cam->vdev, cam); |
| |
| cam->udev = udev; |
| |
| switch (mode) { |
| case 1: |
| dev_info(&udev->dev, "160x120 mode selected\n"); |
| cam->width = 160; |
| cam->height = 120; |
| break; |
| case 2: |
| dev_info(&udev->dev, "640x480 mode selected\n"); |
| cam->width = 640; |
| cam->height = 480; |
| break; |
| default: |
| dev_info(&udev->dev, "320x240 mode selected\n"); |
| cam->width = 320; |
| cam->height = 240; |
| break; |
| } |
| |
| m0d1[0] = mode; |
| m1[2].value = 0xf000 + mode; |
| m2[1].value = 0xf000 + mode; |
| |
| /* special case for METHOD3, the modes are different */ |
| if (cam->method == METHOD3) { |
| switch (mode) { |
| case 1: |
| m2[1].value = 0xf000 + 4; |
| break; |
| case 2: |
| m2[1].value = 0xf000 + 0; |
| break; |
| default: |
| m2[1].value = 0xf000 + 1; |
| break; |
| } |
| } |
| |
| header2[437] = cam->height / 256; |
| header2[438] = cam->height % 256; |
| header2[439] = cam->width / 256; |
| header2[440] = cam->width % 256; |
| |
| cam->nb = 0; |
| |
| DBG("dev: %p, udev %p interface %p\n", cam, cam->udev, intf); |
| |
| /* set up the endpoint information */ |
| iface_desc = intf->cur_altsetting; |
| DBG("num endpoints %d\n", iface_desc->desc.bNumEndpoints); |
| for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| endpoint = &iface_desc->endpoint[i].desc; |
| if (!cam->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) { |
| /* we found the bulk in endpoint */ |
| cam->read_endpoint = endpoint->bEndpointAddress; |
| } |
| } |
| |
| if (!cam->read_endpoint) { |
| err = -ENOMEM; |
| dev_err(&intf->dev, "Could not find bulk-in endpoint\n"); |
| goto fail; |
| } |
| |
| /* v4l */ |
| INIT_LIST_HEAD(&cam->vidq.active); |
| cam->vidq.cam = cam; |
| |
| usb_set_intfdata(intf, cam); |
| |
| /* load zr364xx board specific */ |
| err = zr364xx_board_init(cam); |
| if (!err) |
| err = v4l2_ctrl_handler_setup(hdl); |
| if (err) |
| goto fail; |
| |
| spin_lock_init(&cam->slock); |
| |
| cam->fmt = formats; |
| |
| videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops, |
| NULL, &cam->slock, |
| V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| V4L2_FIELD_NONE, |
| sizeof(struct zr364xx_buffer), cam, &cam->lock); |
| |
| err = video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1); |
| if (err) { |
| dev_err(&udev->dev, "video_register_device failed\n"); |
| goto fail; |
| } |
| |
| dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n", |
| video_device_node_name(&cam->vdev)); |
| return 0; |
| |
| fail: |
| v4l2_ctrl_handler_free(hdl); |
| v4l2_device_unregister(&cam->v4l2_dev); |
| kfree(cam); |
| return err; |
| } |
| |
| |
| static void zr364xx_disconnect(struct usb_interface *intf) |
| { |
| struct zr364xx_camera *cam = usb_get_intfdata(intf); |
| |
| mutex_lock(&cam->lock); |
| usb_set_intfdata(intf, NULL); |
| dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n"); |
| video_unregister_device(&cam->vdev); |
| v4l2_device_disconnect(&cam->v4l2_dev); |
| |
| /* stops the read pipe if it is running */ |
| if (cam->b_acquire) |
| zr364xx_stop_acquire(cam); |
| |
| zr364xx_stop_readpipe(cam); |
| mutex_unlock(&cam->lock); |
| v4l2_device_put(&cam->v4l2_dev); |
| } |
| |
| |
| #ifdef CONFIG_PM |
| static int zr364xx_suspend(struct usb_interface *intf, pm_message_t message) |
| { |
| struct zr364xx_camera *cam = usb_get_intfdata(intf); |
| |
| cam->was_streaming = cam->b_acquire; |
| if (!cam->was_streaming) |
| return 0; |
| zr364xx_stop_acquire(cam); |
| zr364xx_stop_readpipe(cam); |
| return 0; |
| } |
| |
| static int zr364xx_resume(struct usb_interface *intf) |
| { |
| struct zr364xx_camera *cam = usb_get_intfdata(intf); |
| int res; |
| |
| if (!cam->was_streaming) |
| return 0; |
| |
| zr364xx_start_readpipe(cam); |
| res = zr364xx_prepare(cam); |
| if (!res) |
| zr364xx_start_acquire(cam); |
| return res; |
| } |
| #endif |
| |
| /**********************/ |
| /* Module integration */ |
| /**********************/ |
| |
| static struct usb_driver zr364xx_driver = { |
| .name = "zr364xx", |
| .probe = zr364xx_probe, |
| .disconnect = zr364xx_disconnect, |
| #ifdef CONFIG_PM |
| .suspend = zr364xx_suspend, |
| .resume = zr364xx_resume, |
| .reset_resume = zr364xx_resume, |
| #endif |
| .id_table = device_table |
| }; |
| |
| module_usb_driver(zr364xx_driver); |
| |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(DRIVER_VERSION); |