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Message-ID: <20080514205927.GA13134@kroah.com>
Date: Wed, 14 May 2008 13:59:27 -0700
From: Greg KH <greg@...ah.com>
To: mchehab@...radead.org, v4l-dvb-maintainer@...uxtv.org
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
video4linux-list@...hat.com
Subject: [PATCH] USB: add Sensoray 2255 v4l driver
From: Dean Anderson <dean@...soray.com>
This driver adds support for the Sensoray 2255 devices.
It was primarily developed by Dean Anderson with only a little bit of
guidance and cleanup by Greg.
From: Dean Anderson <dean@...soray.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
drivers/media/video/Kconfig | 9
drivers/media/video/Makefile | 1
drivers/media/video/s2255drv.c | 2719 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 2729 insertions(+)
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -893,6 +893,15 @@ config USB_STKWEBCAM
To compile this driver as a module, choose M here: the
module will be called stkwebcam.
+config USB_S2255
+ tristate "USB Sensoray 2255 video capture device"
+ depends on VIDEO_V4L2
+ select VIDEOBUF_VMALLOC
+ default n
+ help
+ Say Y here if you want support for the Sensoray 2255 USB device.
+ This driver can be compiled as a module, called s2255drv.
+
endif # V4L_USB_DRIVERS
config SOC_CAMERA
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -122,6 +122,7 @@ obj-$(CONFIG_USB_IBMCAM) += usbvi
obj-$(CONFIG_USB_KONICAWC) += usbvideo/
obj-$(CONFIG_USB_VICAM) += usbvideo/
obj-$(CONFIG_USB_QUICKCAM_MESSENGER) += usbvideo/
+obj-$(CONFIG_USB_S2255) += s2255drv.o
obj-$(CONFIG_VIDEO_IVTV) += ivtv/
obj-$(CONFIG_VIDEO_CX18) += cx18/
--- /dev/null
+++ b/drivers/media/video/s2255drv.c
@@ -0,0 +1,2719 @@
+/*
+ * Sensoray 2255 USB Video for Linux driver
+ *
+ * Copyright (C) 2007-2008 by Sensoray Company Inc.
+ * Dean Anderson
+ *
+ * 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, version 2.
+ *
+ * Some video buffer code based on vivi driver:
+ *
+ * TODO: Incorporate videodev2 frame rate(FR) enumeration
+ * (currently experimental.)
+ *
+ * 2255 device supports 4 simultaneous channels.
+ * The channels are not "crossbar" inputs, they are physically
+ * attached to separate video decoders.
+ * Because of USB2.0 bandwidth limitations. There is only a
+ * certain amount of data which may be transferred at one time
+ * Because FR control is not in V4L yet, we may want to
+ * limit the cases:
+ * 1) full size, color mode YUYV or YUV422P:
+ * 2 video_devices allowed at full size.
+ * 2) full or half size Grey scale:
+ * 4 video_devices
+ * 3) half size, color mode YUYV or YUV422P
+ * 4 video_devices
+ */
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/random.h>
+#include <linux/mutex.h>
+#include <linux/videodev2.h>
+#include <linux/version.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <media/videobuf-vmalloc.h>
+#include <media/v4l2-common.h>
+#include <linux/kthread.h>
+#include <linux/highmem.h>
+#include <linux/freezer.h>
+#include <linux/vmalloc.h>
+#include <linux/usb.h>
+
+#define FIRMWARE_FILE_NAME "f2255usb.bin"
+
+#define DIR_IN 0
+#define DIR_OUT 1
+
+/* firmware query */
+#define VX_FW 0x30
+
+#define MAX_CHANNELS 4
+#define FRAME_MARKER 0x2255DA4AL
+#define MAX_PIPE_USBBLOCK (40*1024)
+#define DEFAULT_PIPE_USBBLOCK (16*1024)
+#define MAX_CHANNELS 4
+#define MAX_PIPE_BUFFERS 1
+#define SYS_FRAMES 4
+/* maximum size is PAL full size plus room for the marker header(s) */
+#define SYS_FRAMES_MAXSIZE (720*288*2*2 + 4096)
+#define DEF_USB_BLOCK (4096)
+#define LINE_SZ_4CIFS_NTSC 640
+#define LINE_SZ_2CIFS_NTSC 640
+#define LINE_SZ_1CIFS_NTSC 320
+#define LINE_SZ_4CIFS_PAL 704
+#define LINE_SZ_2CIFS_PAL 704
+#define LINE_SZ_1CIFS_PAL 352
+#define NUM_LINES_4CIFS_NTSC 240
+#define NUM_LINES_2CIFS_NTSC 240
+#define NUM_LINES_1CIFS_NTSC 240
+#define NUM_LINES_4CIFS_PAL 288
+#define NUM_LINES_2CIFS_PAL 288
+#define NUM_LINES_1CIFS_PAL 288
+#define LINE_SZ_DEF 640
+#define NUM_LINES_DEF 240
+
+
+/* predefined settings */
+#define FORMAT_NTSC 1
+#define FORMAT_PAL 2
+
+#define SCALE_4CIFS 1 /* 640x480(NTSC) or 704x576(PAL) */
+#define SCALE_2CIFS 2 /* 640x240(NTSC) or 704x288(PAL) */
+#define SCALE_1CIFS 3 /* 320x240(NTSC) or 352x288(PAL) */
+
+#define COLOR_YUVPL 1 /* YUV planar */
+#define COLOR_YUVPK 2 /* YUV packed */
+#define COLOR_RGB 3 /* RGB */
+#define COLOR_Y8 4 /* monochrome */
+
+/* frame decimation. Not implemented by V4L yet(experimental in V4L) */
+#define FDEC_1 1 /* capture every frame. default */
+#define FDEC_2 2 /* capture every 2nd frame */
+#define FDEC_3 3 /* capture every 3rd frame */
+#define FDEC_5 5 /* capture every 5th frame */
+
+/*-------------------------------------------------------
+ * Default mode parameters.
+ *-------------------------------------------------------*/
+#define DEF_SCALE SCALE_4CIFS
+#define DEF_COLOR COLOR_YUVPL
+#define DEF_FDEC FDEC_1
+#define DEF_BRIGHT 0
+#define DEF_CONTRAST 0x5c
+#define DEF_SATURATION 0x80
+#define DEF_HUE 0
+
+/* usb config commands */
+#define IN_DATA_TOKEN 0x2255c0de
+#define CMD_2255 0xc2255000
+#define CMD_SET_MODE (CMD_2255 | 0x10)
+#define CMD_START (CMD_2255 | 0x20)
+#define CMD_STOP (CMD_2255 | 0x30)
+#define CMD_STATUS (CMD_2255 | 0x40)
+
+struct mode2255i {
+ u32 format; /* input video format (NTSC, PAL) */
+ u32 scale; /* output video scale */
+ u32 color; /* output video color format */
+ u32 fdec; /* frame decimation */
+ u32 bright; /* brightness */
+ u32 contrast; /* contrast */
+ u32 saturation; /* saturation */
+ u32 hue; /* hue (NTSC only)*/
+ u32 single; /* capture 1 frame at a time (!=0), continuously (==0)*/
+ u32 usb_block; /* block size. should be 4096 of DEF_USB_BLOCK */
+ u32 restart; /* if DSP requires restart */
+};
+
+/* frame structure */
+#define FRAME_STATE_UNUSED 0
+#define FRAME_STATE_FILLING 1
+#define FRAME_STATE_FULL 2
+
+
+struct framei {
+ unsigned long size;
+
+ unsigned long ulState; /* ulState ==0 unused, 1 being filled, 2 full */
+ void *lpvbits; /* image data */
+ unsigned long cur_size; /* current data copied to it */
+};
+
+/* image buffer structure */
+struct bufferi {
+ unsigned long dwFrames; /* number of frames in buffer */
+ struct framei frame[SYS_FRAMES]; /* array of FRAME structures */
+};
+
+#define DEF_MODEI_NTSC_CONT FORMAT_NTSC, DEF_SCALE, DEF_COLOR, \
+ DEF_FDEC, DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, \
+ DEF_HUE, 0, DEF_USB_BLOCK, 0
+
+#define DEF_MODEI_PAL_CONT FORMAT_PAL, DEF_SCALE, DEF_COLOR, DEF_FDEC,\
+ DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, DEF_HUE, 0, \
+ DEF_USB_BLOCK, 0
+
+#define DEF_MODEI_NTSC_SING FORMAT_NTSC, DEF_SCALE, DEF_COLOR, DEF_FDEC,\
+ DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, DEF_HUE, 1,\
+ DEF_USB_BLOCK, 0
+
+#define DEF_MODEI_PAL_SING FORMAT_PAL, DEF_SCALE, DEF_COLOR, DEF_FDEC, \
+ DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, DEF_HUE, 1,\
+ DEF_USB_BLOCK, 0
+
+struct s2255_dmaqueue {
+ struct list_head active;
+ struct list_head queued;
+ struct timer_list timeout;
+ /* thread for acquisition */
+ struct task_struct *kthread;
+ int frame;
+ struct s2255_dev *dev;
+ int channel;
+};
+
+/* for firmware loading */
+#define FWSTATE_NOTLOADED 0
+#define FWSTATE_SUCCESS 1
+#define FWSTATE_FAILED 2
+
+struct complete_data {
+ int fw_loaded;
+ int fw_size;
+ struct urb *fw_urb;
+ int fw_state;
+ void *pfw_data;
+ const struct firmware *fw;
+};
+
+struct s2255_pipeinfo {
+ u32 max_transfer_size;
+ u32 cur_transfer_size;
+ u8 *transfer_buffer;
+ u32 transfer_flags;;
+ u32 state;
+ u32 prev_state;
+ u32 urb_size;
+ void *stream_urb;
+ void *dev; /* back pointer to s2255_dev struct*/
+ u32 err_count;
+ u32 buf_index;
+ u32 idx;
+ u32 priority_set;
+};
+
+struct s2255_fmt; /*forward declaration */
+
+struct s2255_dev {
+ int frames;
+ int users[MAX_CHANNELS];
+ struct mutex lock;
+ int resources[MAX_CHANNELS];
+ struct usb_device *udev;
+ struct usb_interface *interface;
+ u8 read_endpoint;
+
+ struct s2255_dmaqueue vidq[MAX_CHANNELS];
+ struct video_device *vdev[MAX_CHANNELS];
+ struct list_head s2255_devlist;
+ struct timer_list timer;
+ struct complete_data *fw_data;
+ int board_num;
+ int is_open;
+ struct s2255_pipeinfo pipes[MAX_PIPE_BUFFERS];
+ struct bufferi buffer[MAX_CHANNELS];
+ struct mode2255i mode[MAX_CHANNELS];
+ const struct s2255_fmt *cur_fmt[MAX_CHANNELS];
+ int cur_frame[MAX_CHANNELS];
+ int last_frame[MAX_CHANNELS];
+ u32 cc; /* current channel */
+ int b_acquire[MAX_CHANNELS];
+ unsigned long req_image_size[MAX_CHANNELS];
+ int bad_payload[MAX_CHANNELS];
+ unsigned long frame_count[MAX_CHANNELS];
+ int frame_ready;
+ struct kref kref;
+ spinlock_t slock;
+};
+#define to_s2255_dev(d) container_of(d, struct s2255_dev, kref)
+
+struct s2255_fmt {
+ char *name;
+ u32 fourcc;
+ int depth;
+};
+
+/* buffer for one video frame */
+struct s2255_buffer {
+ /* common v4l buffer stuff -- must be first */
+ struct videobuf_buffer vb;
+ const struct s2255_fmt *fmt;
+ /* future use */
+ int reserved[32];
+};
+
+struct s2255_fh {
+ struct s2255_dev *dev;
+ unsigned int resources;
+ const struct s2255_fmt *fmt;
+ unsigned int width;
+ unsigned int height;
+ struct videobuf_queue vb_vidq;
+ enum v4l2_buf_type type;
+ int channel;
+ /* mode below is the desired mode.
+ mode in s2255_dev is the current mode that was last set */
+ struct mode2255i mode;
+};
+
+
+#define CUR_USB_FWVER 774 /* current cypress EEPROM firmware version */
+#define S2255_MAJOR_VERSION 1
+#define S2255_MINOR_VERSION 13
+#define S2255_RELEASE 0
+#define S2255_VERSION KERNEL_VERSION(S2255_MAJOR_VERSION, \
+ S2255_MINOR_VERSION, \
+ S2255_RELEASE)
+
+/* vendor ids */
+#define USB_S2255_VENDOR_ID 0x1943
+#define USB_S2255_PRODUCT_ID 0x2255
+#define S2255_NORMS (V4L2_STD_PAL_B | V4L2_STD_NTSC_M)
+/* frame prefix size (sent once every frame) */
+#define PREFIX_SIZE 512
+
+/* Because the channels were physically printed on the box in
+ reverse order than originally planned */
+static unsigned long G_chnmap[MAX_CHANNELS] = { 3, 2, 1, 0 };
+
+static LIST_HEAD(s2255_devlist);
+
+static int debug;
+static int *s2255_debug = &debug;
+
+static int s2255_start_readpipe(struct s2255_dev *dev);
+static void s2255_stop_readpipe(struct s2255_dev *dev);
+static int s2255_start_acquire(struct s2255_dev *dev, unsigned long chn);
+static int s2255_stop_acquire(struct s2255_dev *dev, unsigned long chn);
+static void s2255_fillbuff(struct s2255_dev *dev, struct s2255_buffer *buf,
+ int chn);
+static int s2255_set_mode(struct s2255_dev *dev, unsigned long chn,
+ struct mode2255i *mode);
+
+#define dprintk(level, fmt, arg...) \
+ do { \
+ if (*s2255_debug >= (level)) { \
+ printk(KERN_DEBUG "s2255: " fmt, ##arg); \
+ } \
+ } while (0)
+
+
+static DEFINE_MUTEX(usb_s2255_open_mutex);
+static struct usb_driver s2255_driver;
+
+/* Declare static vars that will be used as parameters */
+static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
+
+/* start video number */
+static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
+
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level(0-100) default 0");
+module_param(vid_limit, int, 0);
+MODULE_PARM_DESC(vid_limit, "video memory limit(Mb)");
+module_param(video_nr, int, 0);
+MODULE_PARM_DESC(video_nr, "start video minor(-1 default autodetect)");
+
+/* USB device table */
+static struct usb_device_id s2255_table[] = {
+ {USB_DEVICE(USB_S2255_VENDOR_ID, USB_S2255_PRODUCT_ID)},
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, s2255_table);
+
+
+#define BUFFER_TIMEOUT msecs_to_jiffies(400)
+
+/* supported controls */
+static struct v4l2_queryctrl s2255_qctrl[] = {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = -127,
+ .maximum = 128,
+ .step = 1,
+ .default_value = 0,
+ .flags = 0,
+ },
+ {
+ .id = V4L2_CID_CONTRAST,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Contrast",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 0x1,
+ .default_value = DEF_CONTRAST,
+ .flags = 0,
+ },
+ {
+ .id = V4L2_CID_SATURATION,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Saturation",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 0x1,
+ .default_value = DEF_SATURATION,
+ .flags = 0,
+ },
+ {
+ .id = V4L2_CID_HUE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Hue",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 0x1,
+ .default_value = DEF_HUE,
+ .flags = 0,
+ }
+};
+
+static int qctl_regs[ARRAY_SIZE(s2255_qctrl)];
+
+/* image formats. Note RGB formats are software converted.
+ * because the 2255 transfers in YUV for maximum USB efficiency
+ * in order to allow 2 full size color channels at full frame rate
+ */
+static const struct s2255_fmt formats[] = {
+ {
+ .name = "4:2:2, planar, YUV422P",
+ .fourcc = V4L2_PIX_FMT_YUV422P,
+ .depth = 16
+ },
+ {
+ .name = "4:2:2, packed, YUYV",
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .depth = 16
+ },
+ {
+ .name = "BGR24",
+ .fourcc = V4L2_PIX_FMT_BGR24,
+ .depth = 24
+ },
+ {
+ .name = "RGB24",
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .depth = 24
+ },
+ {
+ .name = "BGR32",
+ .fourcc = V4L2_PIX_FMT_BGR32,
+ .depth = 32
+ },
+ {
+ .name = "RGB32",
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .depth = 32
+ },
+ {
+ .name = "RGB565",
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .depth = 16
+ },
+ {
+ .name = "RGB565 big endian",
+ .fourcc = V4L2_PIX_FMT_RGB565X,
+ .depth = 16
+ },
+ {
+ .name = "8bpp GREY",
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .depth = 8
+ },
+};
+
+static int norm_maxw(struct video_device *vdev)
+{
+ return (vdev->current_norm != V4L2_STD_PAL_B) ?
+ LINE_SZ_4CIFS_NTSC : LINE_SZ_4CIFS_PAL;
+}
+
+static int norm_maxh(struct video_device *vdev)
+{
+ return (vdev->current_norm != V4L2_STD_PAL_B) ?
+ (NUM_LINES_1CIFS_NTSC * 2) : (NUM_LINES_1CIFS_PAL * 2);
+}
+
+static int norm_minw(struct video_device *vdev)
+{
+ return (vdev->current_norm != V4L2_STD_PAL_B) ?
+ LINE_SZ_1CIFS_NTSC : LINE_SZ_1CIFS_PAL;
+}
+
+static int norm_minh(struct video_device *vdev)
+{
+ return (vdev->current_norm != V4L2_STD_PAL_B) ?
+ (NUM_LINES_1CIFS_NTSC) : (NUM_LINES_1CIFS_PAL);
+}
+
+/*
+ * convert from YUV(YCrCb) to RGB
+ * 65536 R = 76533(Y-16) + 104936 * (Cr-128)
+ * 65536 G = 76533(Y-16) - 53451(Cr-128) - 25703(Cb -128)
+ * 65536 B = 76533(Y-16) + 132677(Cb-128)
+ */
+static void YCrCb2RGB(int Y, int Cr, int Cb, unsigned char *pR,
+ unsigned char *pG, unsigned char *pB)
+{
+ int R, G, B;
+
+ Y = Y - 16;
+ Cr = Cr - 128;
+ Cb = Cb - 128;
+
+ R = (76533 * Y + 104936 * Cr) >> 16;
+ G = ((76533 * Y) - (53451 * Cr) - (25703 * Cb)) >> 16;
+ B = ((76533 * Y) + (132677 * Cb)) >> 16;
+ /* even with proper conversion, some values still need clipping. */
+ if (R > 255)
+ R = 255;
+ if (G > 255)
+ G = 255;
+ if (B > 255)
+ B = 255;
+ if (R < 0)
+ R = 0;
+ if (G < 0)
+ G = 0;
+ if (B < 0)
+ B = 0;
+ *pR = R;
+ *pG = G;
+ *pB = B;
+ return;
+}
+
+/* converts 2255 planar format to yuyv */
+static void planar422p_to_yuy2(const unsigned char *in, unsigned char *out,
+ int width, int height)
+{
+ unsigned char *pY;
+ unsigned char *pCb;
+ unsigned char *pCr;
+ unsigned long size = height * width;
+ unsigned int i;
+ pY = (unsigned char *)in;
+ pCr = (unsigned char *)in + height * width;
+ pCb = (unsigned char *)in + height * width + (height * width / 2);
+ for (i = 0; i < size * 2; i += 4) {
+ out[i] = *pY++;
+ out[i + 1] = *pCr++;
+ out[i + 2] = *pY++;
+ out[i + 3] = *pCb++;
+ }
+ return;
+}
+
+/*
+ * basic 422 planar to RGB24 or BGR24 software conversion.
+ * This is best done with MMX. Update to kernel function
+ * when image conversion functions added to kernel.
+ */
+static void planar422p_to_rgb24(const unsigned char *in,
+ unsigned char *out, int width,
+ int height, int rev_order)
+{
+ unsigned char *pY;
+ unsigned char *pYEND;
+ unsigned char *pCb;
+ unsigned char *pCr;
+ unsigned char Cr, Cb, Y, r, g, b;
+ unsigned long k = 0;
+ pY = (unsigned char *)in;
+ pCb = (unsigned char *)in + (height * width);
+ pCr = (unsigned char *)in + (height * width) + (height * width / 2);
+ pYEND = pCb;
+ while (pY < pYEND) {
+ Y = *pY++;
+ Cr = *pCr;
+ Cb = *pCb;
+ YCrCb2RGB(Y, Cr, Cb, &r, &g, &b);
+ out[k++] = !rev_order ? b : r;
+ out[k++] = g;
+ out[k++] = !rev_order ? r : b;
+ if (pY >= pYEND)
+ break;
+ Y = *pY++;
+ Cr = *pCr++;
+ Cb = *pCb++;
+ YCrCb2RGB(Y, Cr, Cb, &r, &g, &b);
+ out[k++] = !rev_order ? b : r;
+ out[k++] = g;
+ out[k++] = !rev_order ? r : b;
+ }
+ return;
+}
+
+static void planar422p_to_rgb32(const unsigned char *in, unsigned char *out,
+ int width, int height, int rev_order)
+{
+ unsigned char *pY;
+ unsigned char *pYEND;
+ unsigned char *pCb;
+ unsigned char *pCr;
+ unsigned char Cr, Cb, Y, r, g, b;
+ unsigned long k = 0;
+ pY = (unsigned char *)in;
+ pCb = (unsigned char *)in + (height * width);
+ pCr = (unsigned char *)in + (height * width) + (height * width / 2);
+ pYEND = pCb;
+ while (pY < pYEND) {
+ Y = *pY++;
+ Cr = *pCr;
+ Cb = *pCb;
+ YCrCb2RGB(Y, Cr, Cb, &r, &g, &b);
+ out[k++] = rev_order ? b : r;
+ out[k++] = g;
+ out[k++] = rev_order ? r : b;
+ out[k++] = 0;
+ if (pY >= pYEND)
+ break;
+ Y = *pY++;
+ Cr = *pCr++;
+ Cb = *pCb++;
+ YCrCb2RGB(Y, Cr, Cb, &r, &g, &b);
+ out[k++] = rev_order ? b : r;
+ out[k++] = g;
+ out[k++] = rev_order ? r : b;
+ out[k++] = 0;
+ }
+
+ return;
+}
+
+static void planar422p_to_rgb565(unsigned char const *in, unsigned char *out,
+ int width, int height, int rev_order)
+{
+ unsigned char *pY;
+ unsigned char *pYEND;
+ unsigned char *pCb;
+ unsigned char *pCr;
+ unsigned char Cr, Cb, Y, r, g, b;
+ unsigned long k = 0;
+ unsigned short rgbbytes;
+ pY = (unsigned char *)in;
+ pCb = (unsigned char *)in + (height * width);
+ pCr = (unsigned char *)in + (height * width) + (height * width / 2);
+ pYEND = pCb;
+ while (pY < pYEND) {
+ Y = *pY++;
+ Cr = *pCr;
+ Cb = *pCb;
+ YCrCb2RGB(Y, Cr, Cb, &r, &g, &b);
+ r = r >> 3;
+ g = g >> 2;
+ b = b >> 3;
+ if (rev_order)
+ rgbbytes = b + (g << 5) + (r << (5 + 6));
+ else
+ rgbbytes = r + (g << 5) + (b << (5 + 6));
+ out[k++] = rgbbytes & 0xff;
+ out[k++] = (rgbbytes >> 8) & 0xff;
+ Y = *pY++;
+ Cr = *pCr++;
+ Cb = *pCb++;
+ YCrCb2RGB(Y, Cr, Cb, &r, &g, &b);
+ r = r >> 3;
+ g = g >> 2;
+ b = b >> 3;
+ if (rev_order)
+ rgbbytes = b + (g << 5) + (r << (5 + 6));
+ else
+ rgbbytes = r + (g << 5) + (b << (5 + 6));
+ out[k++] = rgbbytes & 0xff;
+ out[k++] = (rgbbytes >> 8) & 0xff;
+ }
+ return;
+}
+
+/* kickstarts the firmware loading. from probe
+ */
+static void s2255_timer(unsigned long user_data)
+{
+ struct complete_data *data = (struct complete_data *)user_data;
+ dprintk(100, "s2255 timer\n");
+ if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
+ printk(KERN_ERR "s2255: can't submit urb\n");
+ if (data->fw) {
+ release_firmware(data->fw);
+ data->fw = NULL;
+ }
+ return;
+ }
+}
+
+/* this loads the firmware asynchronously.
+ Originally this was done synchroously in probe.
+ But it is better to load it asynchronously here than block
+ inside the probe function. Blocking inside probe affects boot time.
+ FW loading is triggered by the timer in the probe function
+*/
+static void s2255_fwchunk_complete(struct urb *urb)
+{
+ struct complete_data *data = urb->context;
+ struct usb_device *udev = urb->dev;
+ int len;
+ dprintk(100, "udev %p urb %p", udev, urb);
+
+ if (urb->status) {
+ dev_err(&udev->dev, "URB failed with status %d", urb->status);
+ return;
+ }
+ if (data->fw_urb == NULL) {
+ dev_err(&udev->dev, "early disconncect\n");
+ return;
+ }
+#define CHUNK_SIZE 512
+ /* all USB transfers must be done with continuous kernel memory.
+ can't allocate more than 128k in current linux kernel, so
+ upload the firmware in chunks
+ */
+ if (data->fw_loaded < data->fw_size) {
+ len = (data->fw_loaded + CHUNK_SIZE) > data->fw_size ?
+ data->fw_size % CHUNK_SIZE : CHUNK_SIZE;
+
+ if (len < CHUNK_SIZE)
+ memset(data->pfw_data, 0, CHUNK_SIZE);
+
+ dprintk(100, "completed len %d, loaded %d \n", len,
+ data->fw_loaded);
+
+ memcpy(data->pfw_data,
+ (char *) data->fw->data + data->fw_loaded, len);
+ usb_fill_bulk_urb(data->fw_urb, udev, usb_sndbulkpipe(udev, 2),
+ data->pfw_data, CHUNK_SIZE,
+ s2255_fwchunk_complete, data);
+ if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
+ dev_err(&udev->dev, "failed submit URB\n");
+ data->fw_state = FWSTATE_FAILED;
+ return;
+ }
+ data->fw_loaded += len;
+ } else {
+ data->fw_state = FWSTATE_SUCCESS;
+ dev_info(&udev->dev, "firmware loaded successfully\n");
+ }
+
+ dprintk(100, "2255 complete done\n");
+ return;
+
+}
+
+static int s2255_got_frame(struct s2255_dev *dev, int chn)
+{
+ struct s2255_dmaqueue *dma_q = &dev->vidq[chn];
+ struct s2255_buffer *buf;
+
+ dprintk(2, "wakeup: %p channel: %d\n", &dma_q, chn);
+ if (list_empty(&dma_q->active)) {
+ dprintk(1, "No active queue to serve\n");
+ return -1;
+ }
+ buf = list_entry(dma_q->active.next,
+ struct s2255_buffer, vb.queue);
+
+ if (!waitqueue_active(&buf->vb.done)) {
+ /* no one active,
+ add timer here as process may be suspended(ctrl-z).
+ once it becomes active again, we want to recover.
+ resetting the timer allows this.
+ */
+ mod_timer(&dma_q->timeout, jiffies + BUFFER_TIMEOUT);
+ return -1;
+ }
+
+ do_gettimeofday(&buf->vb.ts);
+ dprintk(100, "[%p/%d] wakeup\n", buf, buf->vb.i);
+ mod_timer(&dma_q->timeout, jiffies + BUFFER_TIMEOUT);
+ s2255_fillbuff(dev, buf, dma_q->channel);
+ return 0;
+}
+
+
+static const struct s2255_fmt *format_by_fourcc(int fourcc)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(formats); i++) {
+ if (-1 == formats[i].fourcc)
+ continue;
+ if (formats[i].fourcc == fourcc)
+ return formats + i;
+ }
+ return NULL;
+}
+
+
+
+
+/* video buffer thread and vmalloc 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 s2255_fillbuff(struct s2255_dev *dev, struct s2255_buffer *buf,
+ int chn)
+{
+ int pos = 0;
+ struct timeval ts;
+ const char *tmpbuf;
+ char *vbuf = videobuf_to_vmalloc(&buf->vb);
+ unsigned long last_frame;
+ struct framei *frm;
+ last_frame = dev->last_frame[chn];
+ if ((last_frame != -1) && (vbuf != NULL)) {
+ frm = &dev->buffer[chn].frame[last_frame];
+ tmpbuf =
+ (const char *)dev->buffer[chn].frame[last_frame].lpvbits;
+ if (buf->fmt->fourcc == V4L2_PIX_FMT_YUYV) {
+ planar422p_to_yuy2((const unsigned char *)tmpbuf,
+ vbuf, buf->vb.width, buf->vb.height);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_GREY) {
+ memcpy(vbuf, tmpbuf, buf->vb.width * buf->vb.height);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_YUV422P) {
+ memcpy(vbuf, tmpbuf,
+ buf->vb.width * buf->vb.height * 2);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_RGB24) {
+ planar422p_to_rgb24(tmpbuf, vbuf, buf->vb.width,
+ buf->vb.height, 1);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_BGR24) {
+ planar422p_to_rgb24(tmpbuf, vbuf, buf->vb.width,
+ buf->vb.height, 0);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_RGB32) {
+ planar422p_to_rgb32(tmpbuf, vbuf, buf->vb.width,
+ buf->vb.height, 0);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_BGR32) {
+ planar422p_to_rgb32(tmpbuf, vbuf, buf->vb.width,
+ buf->vb.height, 1);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_RGB565) {
+ planar422p_to_rgb565(tmpbuf, vbuf, buf->vb.width,
+ buf->vb.height, 1);
+ } else if (buf->fmt->fourcc == V4L2_PIX_FMT_RGB565X) {
+ planar422p_to_rgb565(tmpbuf, vbuf, buf->vb.width,
+ buf->vb.height, 0);
+ } else {
+ printk(KERN_DEBUG "s2255: unknown format?\n");
+ }
+ dev->last_frame[chn] = -1;
+ /* done with the frame, free it */
+ frm->ulState = 0;
+ dprintk(4, "freeing buffer\n");
+ } else {
+ printk(KERN_ERR "s2255: =======no frame\n");
+ return;
+
+ }
+ dprintk(2, "s2255fill at : Buffer 0x%08lx size= %d\n",
+ (unsigned long)vbuf, pos);
+ /* tell v4l buffer was filled */
+ buf->vb.state = VIDEOBUF_DONE;
+ buf->vb.field_count++;
+ do_gettimeofday(&ts);
+ buf->vb.ts = ts;
+ list_del(&buf->vb.queue);
+ wake_up(&buf->vb.done);
+}
+
+
+static int restart_video_queue(struct s2255_dmaqueue *dma_q)
+{
+ struct s2255_buffer *buf, *prev;
+ dprintk(1, "%s dma_q=0x%08lx chan %d\n", __func__,
+ (unsigned long)dma_q, dma_q->channel);
+ if (!list_empty(&dma_q->active)) {
+ buf =
+ list_entry(dma_q->active.next, struct s2255_buffer,
+ vb.queue);
+ dprintk(2, "restart_queue [%p/%d]: restart dma\n", buf,
+ buf->vb.i);
+ /* cancel all outstanding capture requests */
+ list_for_each_entry_safe(buf, prev, &dma_q->active, vb.queue) {
+ list_del(&buf->vb.queue);
+ buf->vb.state = VIDEOBUF_ERROR;
+ wake_up(&buf->vb.done);
+ }
+ mod_timer(&dma_q->timeout, jiffies + BUFFER_TIMEOUT);
+
+ return 0;
+ }
+
+ prev = NULL;
+ for (;;) {
+ if (list_empty(&dma_q->queued)) {
+ dprintk(1, "exiting nothing queued\n");
+ return 0;
+ }
+ buf =
+ list_entry(dma_q->queued.next, struct s2255_buffer,
+ vb.queue);
+ if (NULL == prev) {
+ list_del(&buf->vb.queue);
+ list_add_tail(&buf->vb.queue, &dma_q->active);
+ buf->vb.state = VIDEOBUF_ACTIVE;
+ dprintk(2, "[%p/%d] restart_queue - first active\n",
+ buf, buf->vb.i);
+ } else if (prev->vb.width == buf->vb.width &&
+ prev->vb.height == buf->vb.height &&
+ prev->fmt == buf->fmt) {
+ list_del(&buf->vb.queue);
+ list_add_tail(&buf->vb.queue, &dma_q->active);
+ buf->vb.state = VIDEOBUF_ACTIVE;
+ mod_timer(&dma_q->timeout, jiffies + BUFFER_TIMEOUT);
+ dprintk(2, "[%p/%d] restart_queue - move to active\n",
+ buf, buf->vb.i);
+ } else {
+ return 0;
+ }
+ prev = buf;
+ }
+}
+
+static void s2255_vid_timeout(unsigned long data)
+{
+ struct s2255_dmaqueue *vidq = (struct s2255_dmaqueue *)data;
+ struct s2255_buffer *buf;
+ dprintk(1, "[%d]vid timeout %p\n", vidq->channel, vidq);
+ while (!list_empty(&vidq->active)) {
+ buf =
+ list_entry(vidq->active.next, struct s2255_buffer,
+ vb.queue);
+ list_del(&buf->vb.queue);
+ buf->vb.state = VIDEOBUF_ERROR;
+ wake_up(&buf->vb.done);
+ }
+ restart_video_queue(vidq);
+}
+
+/* ------------------------------------------------------------------
+ Videobuf operations
+ ------------------------------------------------------------------*/
+static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
+ unsigned int *size)
+{
+ struct s2255_fh *fh = vq->priv_data;
+
+ *size = fh->width * fh->height * (fh->fmt->depth >> 3);
+
+ if (0 == *count)
+ *count = 8;
+
+ while (*size * *count > vid_limit * 1024 * 1024)
+ (*count)--;
+
+ return 0;
+}
+
+static void free_buffer(struct videobuf_queue *vq, struct s2255_buffer *buf)
+{
+ dprintk(4, "%s\n", __func__);
+
+ videobuf_waiton(&buf->vb, 0, 0);
+ 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 s2255_fh *fh = vq->priv_data;
+ struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
+ int rc, init_buffer = 0;
+ dprintk(4, "%s, field=%d\n", __func__, field);
+ if (fh->fmt == NULL)
+ return -EINVAL;
+ if ((fh->width < norm_minw(fh->dev->vdev[fh->channel])) ||
+ (fh->width > norm_maxw(fh->dev->vdev[fh->channel])) ||
+ (fh->height < norm_minh(fh->dev->vdev[fh->channel])) ||
+ (fh->height > norm_maxh(fh->dev->vdev[fh->channel]))) {
+ dprintk(4, "invalid buffer prepare\n");
+ return -EINVAL;
+ }
+
+ buf->vb.size = fh->width * fh->height * (fh->fmt->depth >> 3);
+
+ if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) {
+ dprintk(4, "invalid buffer prepare\n");
+ return -EINVAL;
+ }
+
+ if (buf->fmt != fh->fmt ||
+ buf->vb.width != fh->width ||
+ buf->vb.height != fh->height || buf->vb.field != field) {
+ buf->fmt = fh->fmt;
+ buf->vb.width = fh->width;
+ buf->vb.height = fh->height;
+ buf->vb.field = field;
+ init_buffer = 1;
+ }
+
+ if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+ rc = videobuf_iolock(vq, &buf->vb, NULL);
+ if (rc)
+ 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 s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
+ struct s2255_fh *fh = vq->priv_data;
+ struct s2255_dev *dev = fh->dev;
+ struct s2255_dmaqueue *vidq = &dev->vidq[fh->channel];
+ struct s2255_buffer *prev;
+
+ if (!list_empty(&vidq->queued)) {
+ dprintk(1, "adding vb queue=0x%08lx\n",
+ (unsigned long)&buf->vb.queue);
+ list_add_tail(&buf->vb.queue, &vidq->queued);
+ buf->vb.state = VIDEOBUF_QUEUED;
+ dprintk(2, "[%p/%d] buffer_queue - append to queued\n",
+ buf, buf->vb.i);
+ } else if (list_empty(&vidq->active)) {
+ list_add_tail(&buf->vb.queue, &vidq->active);
+ buf->vb.state = VIDEOBUF_ACTIVE;
+ dprintk(2, "[%p/%d] buffer_queue - first active\n",
+ buf, buf->vb.i);
+ } else {
+ prev =
+ list_entry(vidq->active.prev, struct s2255_buffer,
+ vb.queue);
+ if (prev->vb.width == buf->vb.width
+ && prev->vb.height == buf->vb.height
+ && prev->fmt == buf->fmt) {
+ list_add_tail(&buf->vb.queue, &vidq->active);
+ buf->vb.state = VIDEOBUF_ACTIVE;
+ dprintk(2, "[%p/%d] buffer_queue - append to active\n",
+ buf, buf->vb.i);
+
+ } else {
+ list_add_tail(&buf->vb.queue, &vidq->queued);
+ buf->vb.state = VIDEOBUF_QUEUED;
+ dprintk(2, "[%p/%d] buffer_queue - first queued\n",
+ buf, buf->vb.i);
+ }
+ }
+}
+
+static void buffer_release(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
+{
+ struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
+ struct s2255_fh *fh = vq->priv_data;
+ dprintk(4, "%s %d\n", __func__, fh->channel);
+ free_buffer(vq, buf);
+}
+
+static struct videobuf_queue_ops s2255_video_qops = {
+ .buf_setup = buffer_setup,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .buf_release = buffer_release,
+};
+
+/* ------------------------------------------------------------------
+ IOCTL handling
+ ------------------------------------------------------------------*/
+
+static int res_get(struct s2255_dev *dev, struct s2255_fh *fh)
+{
+ /* is it free? */
+ mutex_lock(&dev->lock);
+ if (dev->resources[fh->channel]) {
+ /* no, someone else uses it */
+ mutex_unlock(&dev->lock);
+ return 0;
+ }
+ /* it's free, grab it */
+ dev->resources[fh->channel] = 1;
+ dprintk(1, "res: get\n");
+ mutex_unlock(&dev->lock);
+ return 1;
+}
+
+static int res_locked(struct s2255_dev *dev, struct s2255_fh *fh)
+{
+ return (dev->resources[fh->channel]);
+}
+
+static void res_free(struct s2255_dev *dev, struct s2255_fh *fh)
+{
+ dev->resources[fh->channel] = 0;
+ dprintk(1, "res: put\n");
+}
+
+/* ------------------------------------------------------------------
+ IOCTL vidioc handling
+ ------------------------------------------------------------------*/
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ strcpy(cap->driver, "s2255");
+ strcpy(cap->card, "s2255");
+ cap->version = S2255_VERSION;
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ return 0;
+}
+
+static int vidioc_enum_fmt_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ int index = 0;
+ if (f)
+ index = f->index;
+
+ if (index >= ARRAY_SIZE(formats))
+ return -EINVAL;
+
+ dprintk(4, "name %s\n", formats[index].name);
+ strlcpy(f->description, formats[index].name, sizeof(f->description));
+ f->pixelformat = formats[index].fourcc;
+ return 0;
+}
+
+static int vidioc_g_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct s2255_fh *fh = priv;
+
+ f->fmt.pix.width = fh->width;
+ f->fmt.pix.height = fh->height;
+ f->fmt.pix.field = fh->vb_vidq.field;
+ f->fmt.pix.pixelformat = fh->fmt->fourcc;
+ f->fmt.pix.bytesperline = f->fmt.pix.width * (fh->fmt->depth >> 3);
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+
+ return (0);
+}
+
+static int vidioc_try_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ const struct s2255_fmt *fmt;
+ enum v4l2_field field;
+ int b_any_field = 0;
+ struct s2255_fh *fh = priv;
+ struct s2255_dev *dev = fh->dev;
+ int is_ntsc;
+
+ is_ntsc =
+ (dev->vdev[fh->channel]->current_norm != V4L2_STD_PAL_B) ? 1 : 0;
+
+ fmt = format_by_fourcc(f->fmt.pix.pixelformat);
+
+ if (fmt == NULL)
+ return -EINVAL;
+
+ field = f->fmt.pix.field;
+ if (field == V4L2_FIELD_ANY)
+ b_any_field = 1;
+
+ dprintk(4, "try format %d \n", is_ntsc);
+ /* supports 3 sizes. see s2255drv.h */
+ dprintk(50, "width test %d, height %d\n",
+ f->fmt.pix.width, f->fmt.pix.height);
+ if (is_ntsc) {
+ /* NTSC */
+ if (f->fmt.pix.height >= NUM_LINES_1CIFS_NTSC * 2) {
+ f->fmt.pix.height = NUM_LINES_1CIFS_NTSC * 2;
+ if (b_any_field) {
+ field = V4L2_FIELD_SEQ_TB;
+ } else if (!((field == V4L2_FIELD_INTERLACED) ||
+ (field == V4L2_FIELD_SEQ_TB) ||
+ (field == V4L2_FIELD_INTERLACED_TB))) {
+ dprintk(1, "unsupported field setting\n");
+ return -EINVAL;
+ }
+ } else {
+ f->fmt.pix.height = NUM_LINES_1CIFS_NTSC;
+ if (b_any_field) {
+ field = V4L2_FIELD_TOP;
+ } else if (!((field == V4L2_FIELD_TOP) ||
+ (field == V4L2_FIELD_BOTTOM))) {
+ dprintk(1, "unsupported field setting\n");
+ return -EINVAL;
+ }
+
+ }
+ if (f->fmt.pix.width >= LINE_SZ_4CIFS_NTSC)
+ f->fmt.pix.width = LINE_SZ_4CIFS_NTSC;
+ else if (f->fmt.pix.width >= LINE_SZ_2CIFS_NTSC)
+ f->fmt.pix.width = LINE_SZ_2CIFS_NTSC;
+ else if (f->fmt.pix.width >= LINE_SZ_1CIFS_NTSC)
+ f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
+ else
+ f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
+ } else {
+ /* PAL */
+ if (f->fmt.pix.height >= NUM_LINES_1CIFS_PAL * 2) {
+ f->fmt.pix.height = NUM_LINES_1CIFS_PAL * 2;
+ if (b_any_field) {
+ field = V4L2_FIELD_SEQ_TB;
+ } else if (!((field == V4L2_FIELD_INTERLACED) ||
+ (field == V4L2_FIELD_SEQ_TB) ||
+ (field == V4L2_FIELD_INTERLACED_TB))) {
+ dprintk(1, "unsupported field setting\n");
+ return -EINVAL;
+ }
+ } else {
+ f->fmt.pix.height = NUM_LINES_1CIFS_PAL;
+ if (b_any_field) {
+ field = V4L2_FIELD_TOP;
+ } else if (!((field == V4L2_FIELD_TOP) ||
+ (field == V4L2_FIELD_BOTTOM))) {
+ dprintk(1, "unsupported field setting\n");
+ return -EINVAL;
+ }
+ }
+ if (f->fmt.pix.width >= LINE_SZ_4CIFS_PAL) {
+ dprintk(50, "pal 704\n");
+ f->fmt.pix.width = LINE_SZ_4CIFS_PAL;
+ field = V4L2_FIELD_SEQ_TB;
+ } else if (f->fmt.pix.width >= LINE_SZ_2CIFS_PAL) {
+ dprintk(50, "pal 352A\n");
+ f->fmt.pix.width = LINE_SZ_2CIFS_PAL;
+ field = V4L2_FIELD_TOP;
+ } else if (f->fmt.pix.width >= LINE_SZ_1CIFS_PAL) {
+ dprintk(50, "pal 352B\n");
+ f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
+ field = V4L2_FIELD_TOP;
+ } else {
+ dprintk(50, "pal 352C\n");
+ f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
+ field = V4L2_FIELD_TOP;
+ }
+ }
+
+ dprintk(50, "width %d height %d field %d \n", f->fmt.pix.width,
+ f->fmt.pix.height, f->fmt.pix.field);
+ f->fmt.pix.field = field;
+ f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ return 0;
+}
+
+/* FIXME: This seems to be generic enough to be at videodev2 */
+static int vidioc_s_fmt_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct s2255_fh *fh = priv;
+ const struct s2255_fmt *fmt;
+ int ret;
+ int norm;
+
+ if (res_locked(fh->dev, fh)) {
+ dprintk(1, "can't change format after started\n");
+ return -EBUSY;
+ }
+
+ ret = vidioc_try_fmt_cap(file, fh, f);
+
+ if (ret < 0)
+ return (ret);
+
+ fmt = format_by_fourcc(f->fmt.pix.pixelformat);
+ if (fmt == NULL)
+ return -EINVAL;
+
+ fh->fmt = fmt;
+ fh->width = f->fmt.pix.width;
+ fh->height = f->fmt.pix.height;
+ fh->vb_vidq.field = f->fmt.pix.field;
+ fh->type = f->type;
+ norm = norm_minw(fh->dev->vdev[fh->channel]);
+ if (fh->width > norm_minw(fh->dev->vdev[fh->channel])) {
+ if (fh->height > norm_minh(fh->dev->vdev[fh->channel]))
+ fh->mode.scale = SCALE_4CIFS;
+ else
+ fh->mode.scale = SCALE_2CIFS;
+
+ } else {
+ fh->mode.scale = SCALE_1CIFS;
+ }
+
+ /* color mode */
+ if (fh->fmt->fourcc == V4L2_PIX_FMT_GREY) {
+ fh->mode.color = COLOR_Y8;
+ } else if (fh->fmt->fourcc == V4L2_PIX_FMT_YUV422P) {
+ fh->mode.color = COLOR_YUVPL;
+ } else if (fh->fmt->fourcc == V4L2_PIX_FMT_YUYV) {
+ /* Note: software conversion from YUV422P to YUYV */
+ fh->mode.color = COLOR_YUVPK;
+ } else if ((fh->fmt->fourcc == V4L2_PIX_FMT_RGB24) ||
+ (fh->fmt->fourcc == V4L2_PIX_FMT_BGR24) ||
+ (fh->fmt->fourcc == V4L2_PIX_FMT_RGB32) ||
+ (fh->fmt->fourcc == V4L2_PIX_FMT_RGB565) ||
+ (fh->fmt->fourcc == V4L2_PIX_FMT_RGB565X) ||
+ (fh->fmt->fourcc == V4L2_PIX_FMT_BGR32)) {
+ /* Note:software conversion from YUV422P to RGB(s) */
+ dprintk(2, "mode supported with software conversion.\n");
+ dprintk(2, "for lower CPU usage, use V4L2_PIX_FMT_YUV422P"
+ "V4L2_PIX_FMT_YUVV(minimal software reordering) or"
+ " V4L2_PIX_FMT_GREY\n");
+ fh->mode.color = COLOR_YUVPL;
+ }
+ return (0);
+}
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *p)
+{
+ int rc;
+ struct s2255_fh *fh = priv;
+ rc = videobuf_reqbufs(&fh->vb_vidq, p);
+ return rc;
+}
+
+static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ int rc;
+ struct s2255_fh *fh = priv;
+ rc = videobuf_querybuf(&fh->vb_vidq, p);
+ return rc;
+}
+
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ int rc;
+ struct s2255_fh *fh = priv;
+ rc = videobuf_qbuf(&fh->vb_vidq, p);
+ return rc;
+}
+
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ int rc;
+ struct s2255_fh *fh = priv;
+ rc = videobuf_dqbuf(&fh->vb_vidq, p, file->f_flags & O_NONBLOCK);
+ return rc;
+}
+
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
+{
+ struct s2255_fh *fh = priv;
+ struct videobuf_queue *q = &fh->vb_vidq;
+ struct v4l2_requestbuffers req;
+ unsigned int i;
+ int ret;
+
+ req.type = q->type;
+ req.count = 8;
+ req.memory = V4L2_MEMORY_MMAP;
+ ret = videobuf_reqbufs(q, &req);
+ if (ret < 0)
+ return (ret);
+
+ mbuf->frames = req.count;
+ mbuf->size = 0;
+ for (i = 0; i < mbuf->frames; i++) {
+ mbuf->offsets[i] = q->bufs[i]->boff;
+ mbuf->size += q->bufs[i]->bsize;
+ }
+ return (0);
+}
+#endif
+
+
+#define EP_NUM_CONFIG 2
+/* write to the configuration pipe, synchronously */
+static int s2255_write_config(struct usb_device *udev, unsigned char *pbuf,
+ int size)
+{
+ int pipe;
+ int done;
+ long retval = -1;
+ if (udev) {
+ pipe = usb_sndbulkpipe(udev, EP_NUM_CONFIG);
+ retval = usb_bulk_msg(udev, pipe, pbuf, size, &done, 500);
+ }
+ return retval;
+}
+
+static u32 get_transfer_size(struct mode2255i *mode)
+{
+ int linesPerFrame = LINE_SZ_DEF;
+ int pixelsPerLine = NUM_LINES_DEF;
+ u32 outImageSize;
+ u32 usbInSize;
+ unsigned int mask_mult;
+
+ if (mode == NULL)
+ return 0;
+
+ if (mode->format == FORMAT_NTSC) {
+ switch (mode->scale) {
+ case SCALE_4CIFS:
+ linesPerFrame = NUM_LINES_4CIFS_NTSC * 2;
+ pixelsPerLine = LINE_SZ_4CIFS_NTSC;
+ break;
+ case SCALE_2CIFS:
+ linesPerFrame = NUM_LINES_2CIFS_NTSC;
+ pixelsPerLine = LINE_SZ_2CIFS_NTSC;
+ break;
+ case SCALE_1CIFS:
+ linesPerFrame = NUM_LINES_1CIFS_NTSC;
+ pixelsPerLine = LINE_SZ_1CIFS_NTSC;
+ break;
+ default:
+ break;
+ }
+ } else if (mode->format == FORMAT_PAL) {
+ switch (mode->scale) {
+ case SCALE_4CIFS:
+ linesPerFrame = NUM_LINES_4CIFS_PAL * 2;
+ pixelsPerLine = LINE_SZ_4CIFS_PAL;
+ break;
+ case SCALE_2CIFS:
+ linesPerFrame = NUM_LINES_2CIFS_PAL;
+ pixelsPerLine = LINE_SZ_2CIFS_PAL;
+ break;
+ case SCALE_1CIFS:
+ linesPerFrame = NUM_LINES_1CIFS_PAL;
+ pixelsPerLine = LINE_SZ_1CIFS_PAL;
+ break;
+ default:
+ break;
+ }
+ }
+ outImageSize = linesPerFrame * pixelsPerLine;
+ if (mode->color != COLOR_Y8) {
+ /* 2 bytes/pixel if not monochrome */
+ outImageSize *= 2;
+ }
+
+ /* total bytes to send including prefix and 4K padding;
+ must be a multiple of USB_READ_SIZE */
+ usbInSize = outImageSize + PREFIX_SIZE; /* always send prefix */
+ mask_mult = 0xffffffffUL - DEF_USB_BLOCK + 1;
+ /* if size not a multiple of USB_READ_SIZE */
+ if (usbInSize & ~mask_mult)
+ usbInSize = (usbInSize & mask_mult) + (DEF_USB_BLOCK);
+ return usbInSize;
+}
+
+static void dump_verify_mode(struct s2255_dev *sdev, struct mode2255i *mode)
+{
+ struct device *dev = &sdev->udev->dev;
+ dev_info(dev, "------------------------------------------------\n");
+ dev_info(dev, "verify mode\n");
+ dev_info(dev, "format: %d\n", mode->format);
+ dev_info(dev, "scale: %d\n", mode->scale);
+ dev_info(dev, "fdec: %d\n", mode->fdec);
+ dev_info(dev, "color: %d\n", mode->color);
+ dev_info(dev, "bright: 0x%x\n", mode->bright);
+ dev_info(dev, "restart: 0x%x\n", mode->restart);
+ dev_info(dev, "usb_block: 0x%x\n", mode->usb_block);
+ dev_info(dev, "single: 0x%x\n", mode->single);
+ dev_info(dev, "------------------------------------------------\n");
+}
+
+/*
+ * set mode is the function which controls the DSP.
+ * the restart parameter in struct mode2255i should be set whenever
+ * the image size could change via color format, video system or image
+ * size.
+ * When the restart parameter is set, we sleep for ONE frame to allow the
+ * DSP time to get the new frame
+ */
+static int s2255_set_mode(struct s2255_dev *dev, unsigned long chn,
+ struct mode2255i *mode)
+{
+ int res;
+ u32 *buffer;
+ unsigned long chn_rev;
+
+ chn_rev = G_chnmap[chn];
+ dprintk(3, "mode scale [%ld] %p %d\n", chn, mode, mode->scale);
+ dprintk(3, "mode scale [%ld] %p %d\n", chn, &dev->mode[chn],
+ dev->mode[chn].scale);
+ dprintk(2, "mode contrast %x\n", mode->contrast);
+
+ /* save the mode */
+ dev->mode[chn] = *mode;
+ dev->req_image_size[chn] = get_transfer_size(mode);
+ dprintk(1, "transfer size %ld\n", dev->req_image_size[chn]);
+
+ buffer = kzalloc(512, GFP_KERNEL);
+ if (buffer == NULL) {
+ dev_err(&dev->udev->dev, "out of mem\n");
+ return -ENOMEM;
+ }
+
+ /* set the mode */
+ buffer[0] = IN_DATA_TOKEN;
+ buffer[1] = (u32) chn_rev;
+ buffer[2] = CMD_SET_MODE;
+ memcpy(&buffer[3], &dev->mode[chn], sizeof(struct mode2255i));
+ res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
+ if (debug)
+ dump_verify_mode(dev, mode);
+ kfree(buffer);
+ dprintk(1, "set mode done chn %lu, %d\n", chn, res);
+
+ /* wait at least 3 frames before continuing */
+ if (mode->restart)
+ msleep(125);
+
+ /* clear the restart flag */
+ dev->mode[chn].restart = 0;
+
+ return res;
+}
+
+static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+ int res;
+ struct s2255_fh *fh = priv;
+ struct s2255_dev *dev = fh->dev;
+ struct s2255_dmaqueue *dmaq = &dev->vidq[fh->channel];
+ struct mode2255i *new_mode;
+ struct mode2255i *old_mode;
+ int chn;
+ int j;
+ dprintk(4, "%s\n", __func__);
+ if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ dev_err(&dev->udev->dev, "invalid fh type0\n");
+ return -EINVAL;
+ }
+ if (i != fh->type) {
+ dev_err(&dev->udev->dev, "invalid fh type1\n");
+ return -EINVAL;
+ }
+
+ if (!res_get(dev, fh)) {
+ dev_err(&dev->udev->dev, "res get busy\n");
+ return -EBUSY;
+ }
+ /* send a set mode command everytime with restart.
+ in case we switch resolutions or other parameters */
+ chn = fh->channel;
+ new_mode = &fh->mode;
+ old_mode = &fh->dev->mode[chn];
+
+ if (new_mode->color != old_mode->color)
+ new_mode->restart = 1;
+ else if (new_mode->scale != old_mode->scale)
+ new_mode->restart = 1;
+ else if (new_mode->format != old_mode->format)
+ new_mode->restart = 1;
+
+ s2255_set_mode(dev, chn, new_mode);
+ new_mode->restart = 0;
+ *old_mode = *new_mode;
+ dev->cur_fmt[chn] = fh->fmt;
+ dprintk(1, "%s[%d]\n", __func__, chn);
+ dev->last_frame[chn] = -1;
+ dev->bad_payload[chn] = 0;
+ dev->cur_frame[chn] = 0;
+ for (j = 0; j < SYS_FRAMES; j++) {
+ dev->buffer[chn].frame[j].ulState = 0;
+ dev->buffer[chn].frame[j].cur_size = 0;
+ }
+ mod_timer(&dmaq->timeout, jiffies + BUFFER_TIMEOUT);
+ res = videobuf_streamon(&fh->vb_vidq);
+ if (res == 0) {
+ s2255_start_acquire(dev, chn);
+ dev->b_acquire[chn] = 1;
+ } else {
+ res_free(dev, fh);
+ }
+ return res;
+}
+
+static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+ int res;
+ struct s2255_fh *fh = priv;
+ struct s2255_dev *dev = fh->dev;
+ struct s2255_dmaqueue *dmaq = &dev->vidq[fh->channel];
+ dprintk(4, "%s\n, channel: %d", __func__, fh->channel);
+ if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ printk(KERN_ERR "invalid fh type0\n");
+ return -EINVAL;
+ }
+ if (i != fh->type) {
+ printk(KERN_ERR "invalid type i\n");
+ return -EINVAL;
+ }
+ s2255_stop_acquire(dev, fh->channel);
+ /* give time for last frame to be received/flush in the usb
+ receive pipe*/
+ msleep(50);
+ res = videobuf_streamoff(&fh->vb_vidq);
+ res_free(dev, fh);
+ /* expire the queue timer now in case still active */
+ mod_timer(&dmaq->timeout, jiffies + HZ);
+ return res;
+}
+
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
+{
+ struct s2255_fh *fh = priv;
+ struct mode2255i *mode;
+
+ if (res_locked(fh->dev, fh)) {
+ dprintk(1, "can't change standard after started\n");
+ return -EBUSY;
+ }
+ mode = &fh->mode;
+
+ if (*i == V4L2_STD_NTSC_M) {
+ dprintk(4, "vidioc_s_std NTSC\n");
+ mode->format = FORMAT_NTSC;
+ } else if (*i == V4L2_STD_PAL_B) {
+ dprintk(4, "vidioc_s_std PAL\n");
+ mode->format = FORMAT_PAL;
+ } else {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* Sensoray 2255 is a multiple channel capture device.
+ It does not have a "crossbar" of inputs.
+ We use one V4L device per channel. The user must
+ be aware that certain combinations are not allowed.
+ For instance, you cannot do full FPS on more than 2 channels(2 videodevs)
+ at once in color(you can do full fps on 4 channels with greyscale.
+*/
+static int vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *inp)
+{
+ if (inp->index != 0)
+ return -EINVAL;
+
+ inp->type = V4L2_INPUT_TYPE_CAMERA;
+ inp->std = S2255_NORMS;
+ strcpy(inp->name, "Camera");
+ return (0);
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ if (i > 0)
+ return -EINVAL;
+ return 0;
+}
+
+/* --- controls ---------------------------------------------- */
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++)
+ if (qc->id && qc->id == s2255_qctrl[i].id) {
+ memcpy(qc, &(s2255_qctrl[i]), sizeof(*qc));
+ return (0);
+ }
+
+ dprintk(4, "query_ctrl -EINVAL %d\n", qc->id);
+ return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++)
+ if (ctrl->id == s2255_qctrl[i].id) {
+ ctrl->value = qctl_regs[i];
+ return (0);
+ }
+ dprintk(4, "g_ctrl -EINVAL\n");
+
+ return -EINVAL;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ int i;
+ struct s2255_fh *fh = priv;
+ struct s2255_dev *dev = fh->dev;
+ struct mode2255i *mode;
+ mode = &fh->mode;
+ dprintk(4, "vidioc_s_ctrl\n");
+ for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++) {
+ if (ctrl->id == s2255_qctrl[i].id) {
+ if (ctrl->value < s2255_qctrl[i].minimum ||
+ ctrl->value > s2255_qctrl[i].maximum)
+ return (-ERANGE);
+
+ qctl_regs[i] = ctrl->value;
+ /* update the mode to the corresponding value */
+ if (ctrl->id == V4L2_CID_BRIGHTNESS)
+ mode->bright = ctrl->value;
+ else if (ctrl->id == V4L2_CID_CONTRAST)
+ mode->contrast = ctrl->value;
+ else if (ctrl->id == V4L2_CID_HUE)
+ mode->hue = ctrl->value;
+ else if (ctrl->id == V4L2_CID_SATURATION)
+ mode->saturation = ctrl->value;
+#if 1
+ mode->restart = 0;
+ /* set mode here. Note: stream does not need restarted.
+ some V4L programs restart stream unnecessarily
+ after a s_crtl.
+ */
+ s2255_set_mode(dev, fh->channel, mode);
+#endif
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+static int s2255_open_v4l(struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ struct s2255_dev *h, *dev = NULL;
+ struct s2255_fh *fh;
+ struct list_head *list;
+ enum v4l2_buf_type type = 0;
+ int i = 0;
+ int cur_channel = -1;
+ dprintk(1, "s2255: open called (minor=%d)\n", minor);
+ list_for_each(list, &s2255_devlist) {
+ h = list_entry(list, struct s2255_dev, s2255_devlist);
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ if (h->vdev[i]->minor == minor) {
+ cur_channel = i;
+ dev = h;
+ type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ }
+ }
+ }
+
+ if ((NULL == dev) || (cur_channel == -1)) {
+ dprintk(1, "s2255: openv4l no dev\n");
+ return -ENODEV;
+ }
+
+ mutex_lock(&usb_s2255_open_mutex);
+
+
+
+ if (dev->fw_data->fw_state == FWSTATE_FAILED) {
+ err("2255 firmware wasn't loaded\n");
+ mutex_unlock(&usb_s2255_open_mutex);
+ return -ENODEV;
+ }
+
+ if (dev->fw_data->fw_state == FWSTATE_NOTLOADED) {
+ /* give 1 second for firmware to load in case
+ driver loaded and then device immediately opened */
+ msleep(1000);
+ if (dev->fw_data->fw_state == FWSTATE_NOTLOADED) {
+ err("2255 firmware loading stalled\n");
+ mutex_unlock(&usb_s2255_open_mutex);
+ return -EAGAIN;
+ }
+ }
+ /* if first open after firmware loaded, release the firmware */
+ if (dev->fw_data->fw) {
+ release_firmware(dev->fw_data->fw);
+ dev->fw_data->fw = NULL;
+ }
+
+ dev->users[cur_channel]++;
+
+ if (dev->users[cur_channel] > 1) {
+ dev->users[cur_channel]--;
+ dev_err(&dev->udev->dev, "one user at a time\n");
+ mutex_unlock(&usb_s2255_open_mutex);
+ return -EAGAIN;
+ }
+
+ dprintk(1, "open minor=%d type=%s users=%d\n",
+ minor, v4l2_type_names[type], dev->users[cur_channel]);
+
+ /* allocate + initialize per filehandle data */
+ fh = kzalloc(sizeof(*fh), GFP_KERNEL);
+ if (NULL == fh) {
+ dev->users[cur_channel]--;
+ mutex_unlock(&usb_s2255_open_mutex);
+ return -ENOMEM;
+ }
+
+ file->private_data = fh;
+ fh->dev = dev;
+ fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ fh->mode = dev->mode[cur_channel];
+ fh->fmt = dev->cur_fmt[cur_channel];
+ /* default 1CIF NTSC */
+ fh->width = 640;
+ fh->height = 480;
+ fh->channel = cur_channel;
+
+ /* Put all controls at a sane state */
+ for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++)
+ qctl_regs[i] = s2255_qctrl[i].default_value;
+
+ dprintk(1, "Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n",
+ (unsigned long)fh, (unsigned long)dev,
+ (unsigned long)&dev->vidq[cur_channel]);
+ dprintk(1, "Open: list_empty queued=%d\n",
+ list_empty(&dev->vidq[cur_channel].queued));
+ dprintk(1, "Open: list_empty active=%d\n",
+ list_empty(&dev->vidq[cur_channel].active));
+ dprintk(1, "s2255core_board_open\n");
+
+ videobuf_queue_vmalloc_init(&fh->vb_vidq, &s2255_video_qops,
+ NULL, NULL,
+ fh->type,
+ V4L2_FIELD_INTERLACED,
+ sizeof(struct s2255_buffer), fh);
+
+ kref_get(&dev->kref);
+ mutex_unlock(&usb_s2255_open_mutex);
+ dprintk(2, "v4l open done\n");
+ return 0;
+}
+
+
+static unsigned int s2255_poll(struct file *file,
+ struct poll_table_struct *wait)
+{
+ struct s2255_fh *fh = file->private_data;
+ int rc;
+ dprintk(100, "%s\n", __func__);
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
+ return POLLERR;
+
+ rc = videobuf_poll_stream(file, &fh->vb_vidq, wait);
+ return rc;
+}
+
+static void s2255_destroy(struct kref *kref)
+{
+ struct s2255_dev *dev = to_s2255_dev(kref);
+ usb_put_dev(dev->udev);
+ dprintk(1, "s2255_destroy\n");
+ kfree(dev);
+}
+
+static int s2255_release_v4l(struct inode *inode, struct file *file)
+{
+ struct s2255_fh *fh = file->private_data;
+ struct s2255_dev *dev = fh->dev;
+ int minor = iminor(inode);
+
+ dev->users[fh->channel]--;
+ if (dev->b_acquire[fh->channel])
+ s2255_stop_acquire(dev, fh->channel);
+ res_free(dev, fh);
+ videobuf_mmap_free(&fh->vb_vidq);
+ kfree(fh);
+ kref_put(&dev->kref, s2255_destroy);
+ dprintk(1, "s2255: close called (minor=%d, users=%d)\n", minor,
+ dev->users[fh->channel]);
+ return 0;
+}
+
+static int s2255_mmap_v4l(struct file *file, struct vm_area_struct *vma)
+{
+ struct s2255_fh *fh = file->private_data;
+ int ret;
+
+ dprintk(4, "mmap called, vma=0x%08lx\n", (unsigned long)vma);
+
+ ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
+
+ dprintk(4, "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 const struct file_operations s2255_fops_v4l = {
+ .owner = THIS_MODULE,
+ .open = s2255_open_v4l,
+ .release = s2255_release_v4l,
+ .poll = s2255_poll,
+ .ioctl = video_ioctl2, /* V4L2 ioctl handler */
+ .mmap = s2255_mmap_v4l,
+ .llseek = no_llseek,
+};
+
+static struct video_device template = {
+ .name = "s2255v",
+ .type = VID_TYPE_CAPTURE,
+ .fops = &s2255_fops_v4l,
+ .minor = -1,
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
+ .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
+ .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
+ .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
+ .vidioc_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+ .vidioc_s_std = vidioc_s_std,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ .vidiocgmbuf = vidiocgmbuf,
+#endif
+ .tvnorms = S2255_NORMS,
+ .current_norm = V4L2_STD_NTSC_M,
+};
+
+static int s2255_probe_v4l(struct s2255_dev *dev)
+{
+ int ret;
+ int i;
+ int cur_nr = video_nr;
+
+ /* initialize all video 4 linux */
+ list_add_tail(&dev->s2255_devlist, &s2255_devlist);
+ /* register 4 video devices */
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ INIT_LIST_HEAD(&dev->vidq[i].active);
+ INIT_LIST_HEAD(&dev->vidq[i].queued);
+ dev->vidq[i].timeout.function = s2255_vid_timeout;
+ dev->vidq[i].timeout.data = (unsigned long)&dev->vidq[i];
+ dev->vidq[i].dev = dev;
+ dev->vidq[i].channel = i;
+ dev->vidq[i].kthread = NULL;
+ init_timer(&dev->vidq[i].timeout);
+ /* register 4 video devices */
+ dev->vdev[i] = video_device_alloc();
+ memcpy(dev->vdev[i], &template, sizeof(struct video_device));
+ dev->vdev[i]->dev = &dev->interface->dev;
+ if (video_nr == -1)
+ ret = video_register_device(dev->vdev[i],
+ VFL_TYPE_GRABBER,
+ video_nr);
+ else
+ ret = video_register_device(dev->vdev[i],
+ VFL_TYPE_GRABBER,
+ cur_nr + i);
+ dev->vdev[i]->priv = dev;
+
+ if (ret != 0) {
+ dev_err(&dev->udev->dev,
+ "failed to register video device!\n");
+ return ret;
+ }
+ }
+ printk(KERN_INFO "Sensoray 2255 V4L driver\n");
+ return ret;
+}
+
+static void s2255_exit_v4l(struct s2255_dev *dev)
+{
+ struct list_head *list;
+ int i;
+ /* unregister the video devices */
+ while (!list_empty(&s2255_devlist)) {
+ list = s2255_devlist.next;
+ list_del(list);
+ }
+
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ video_unregister_device(dev->vdev[i]);
+ del_timer(&dev->vidq[i].timeout);
+ }
+}
+
+/* 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).
+ *
+ * Received frame structure:
+ * bytes 0-3: marker : 0x2255DA4AL (FRAME_MARKER)
+ * bytes 4-7: channel: 0-3
+ * bytes 8-11: payload size: size of the frame
+ * bytes 12-payloadsize+12: frame data
+ */
+static int save_frame(struct s2255_dev *dev, struct s2255_pipeinfo *pipe_info)
+{
+ static int dbgsync; /* = 0; */
+ char *pdest;
+ u32 offset = 0;
+ int bsync = 0;
+ int btrunc = 0;
+ char *psrc;
+ unsigned long copy_size;
+ unsigned long size;
+ s32 idx = -1;
+ struct framei *frm;
+ unsigned char *pdata;
+ unsigned long cur_size;
+ int bsearch = 0;
+ struct bufferi *buf;
+ dprintk(100, "buffer to user\n");
+
+ idx = dev->cur_frame[dev->cc];
+ buf = &dev->buffer[dev->cc];
+ frm = &buf->frame[idx];
+
+ if (frm->ulState == 0) {
+ frm->ulState = 1;
+ frm->cur_size = 0;
+ bsearch = 1;
+ } else if (frm->ulState == 2) {
+ /* system frame was not freed */
+ dprintk(2, "sys frame not free. overrun ringbuf\n");
+ bsearch = 1;
+ frm->ulState = 1;
+ frm->cur_size = 0;
+ }
+
+ if (bsearch) {
+ if (*(s32 *) pipe_info->transfer_buffer != FRAME_MARKER) {
+ u32 jj;
+ if (dbgsync == 0) {
+ dprintk(3, "not synched, discarding all packets"
+ "until marker\n");
+
+ dbgsync++;
+ }
+ pdata = (unsigned char *)pipe_info->transfer_buffer;
+ for (jj = 0; jj < (pipe_info->cur_transfer_size - 12);
+ jj++) {
+ if (*(s32 *) pdata == FRAME_MARKER) {
+ int cc;
+ dprintk(3,
+ "found frame marker at offset:"
+ " %d [%x %x]\n", jj, pdata[0],
+ pdata[1]);
+ offset = jj;
+ bsync = 1;
+ cc = *(u32 *) (pdata + sizeof(u32));
+ if (cc >= MAX_CHANNELS) {
+ printk(KERN_ERR
+ "bad channel\n");
+ return -EINVAL;
+ }
+ /* reverse it */
+ dev->cc = G_chnmap[cc];
+ break;
+ }
+ pdata++;
+ }
+ if (bsync == 0)
+ return -EINVAL;
+ } else {
+ u32 *pword;
+ u32 payload;
+ int cc;
+ dbgsync = 0;
+ bsync = 1;
+ pword = (u32 *) pipe_info->transfer_buffer;
+ cc = pword[1];
+
+ if (cc >= MAX_CHANNELS) {
+ printk("invalid channel found. "
+ "throwing out data!\n");
+ return -EINVAL;
+ }
+ dev->cc = G_chnmap[cc];
+ payload = pword[2];
+ if (payload != dev->req_image_size[dev->cc]) {
+ dprintk(1, "[%d][%d]unexpected payload: %d"
+ "required: %lu \n", cc, dev->cc,
+ payload, dev->req_image_size[dev->cc]);
+ dev->bad_payload[dev->cc]++;
+ /* discard the bad frame */
+ return -EINVAL;
+ }
+
+ }
+ }
+ /* search done. now find out if should be acquiring
+ on this channel */
+ if (!dev->b_acquire[dev->cc]) {
+ frm->ulState = 0;
+ return -EINVAL;
+ }
+
+ idx = dev->cur_frame[dev->cc];
+ frm = &dev->buffer[dev->cc].frame[idx];
+
+ if (frm->ulState == 0) {
+ frm->ulState = 1;
+ frm->cur_size = 0;
+ } else if (frm->ulState == 2) {
+ /* system frame ring buffer overrun */
+ dprintk(2, "sys frame overrun. overwriting frame %d %d\n",
+ dev->cc, idx);
+ frm->ulState = 1;
+ frm->cur_size = 0;
+ }
+
+ if (bsync) {
+ /* skip the marker 512 bytes (and offset if out of sync) */
+ psrc = (u8 *)pipe_info->transfer_buffer + offset + PREFIX_SIZE;
+ } else {
+ psrc = (u8 *)pipe_info->transfer_buffer;
+ }
+
+ if (frm->lpvbits == NULL) {
+ dprintk(1, "s2255 frame buffer == NULL.%p %p %d %d",
+ frm, dev, dev->cc, idx);
+ return -ENOMEM;
+ }
+
+ pdest = frm->lpvbits + frm->cur_size;
+
+ if (bsync) {
+ copy_size =
+ (pipe_info->cur_transfer_size - offset) - PREFIX_SIZE;
+ if (copy_size > pipe_info->cur_transfer_size) {
+ printk("invalid copy size, overflow!\n");
+ return -ENOMEM;
+ }
+ } else {
+ copy_size = pipe_info->cur_transfer_size;
+ }
+
+ cur_size = frm->cur_size;
+ size = dev->req_image_size[dev->cc];
+
+ if ((copy_size + cur_size) > size) {
+ copy_size = size - cur_size;
+ btrunc = 1;
+ }
+
+ memcpy(pdest, psrc, copy_size);
+ cur_size += copy_size;
+ frm->cur_size += copy_size;
+ dprintk(50, "cur_size size %lu size %lu \n", cur_size, size);
+
+ if (cur_size >= (size - PREFIX_SIZE)) {
+ u32 cc = dev->cc;
+ frm->ulState = 2;
+ dprintk(2, "****************[%d]Buffer[%d]full*************\n",
+ cc, idx);
+ dev->last_frame[cc] = dev->cur_frame[cc];
+ dev->cur_frame[cc]++;
+ /* end of system frame ring buffer, start at zero */
+ if ((dev->cur_frame[cc] == SYS_FRAMES) ||
+ (dev->cur_frame[cc] == dev->buffer[cc].dwFrames))
+ dev->cur_frame[cc] = 0;
+
+ /* signal the semaphore for this channel */
+ if (dev->b_acquire[cc])
+ s2255_got_frame(dev, cc);
+ dev->frame_count[cc]++;
+ }
+ /* frame was truncated */
+ if (btrunc) {
+ /* return more data to process */
+ return EAGAIN;
+ }
+ /* done successfully */
+ return 0;
+}
+
+static void s2255_read_video_callback(struct s2255_dev *dev,
+ struct s2255_pipeinfo *pipe_info)
+{
+ int res;
+ dprintk(50, "callback read video \n");
+
+ if (dev->cc >= MAX_CHANNELS) {
+ dev->cc = 0;
+ dev_err(&dev->udev->dev, "invalid channel\n");
+ return;
+ }
+ /* otherwise copy to the system buffers */
+ res = save_frame(dev, pipe_info);
+ if (res == EAGAIN)
+ save_frame(dev, pipe_info);
+
+ dprintk(50, "callback read video done\n");
+ return;
+}
+
+static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request,
+ u16 Index, u16 Value, void *TransferBuffer,
+ s32 TransferBufferLength, int bOut)
+{
+ int r;
+ if (!bOut) {
+ r = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
+ Request,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE |
+ USB_DIR_IN,
+ Value, Index, TransferBuffer,
+ TransferBufferLength, HZ * 5);
+ } else {
+ r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
+ Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ Value, Index, TransferBuffer,
+ TransferBufferLength, HZ * 5);
+ }
+ return r;
+}
+
+/*
+ * retrieve FX2 firmware version. future use.
+ * @param dev pointer to device extension
+ * @return -1 for fail, else returns firmware version as an int(16 bits)
+ */
+static int s2255_get_fx2fw(struct s2255_dev *dev)
+{
+ int fw;
+ int ret;
+ unsigned char transBuffer[64];
+ ret = s2255_vendor_req(dev, VX_FW, 0, 0, transBuffer, 2, DIR_IN);
+ if (ret < 0)
+ dprintk(2, "get fw error: %x\n", ret);
+ fw = transBuffer[0] + (transBuffer[1] << 8);
+ dprintk(2, "Get FW %x %x\n", transBuffer[0], transBuffer[1]);
+ return fw;
+}
+
+/*
+ * Create the system ring buffer to copy frames into from the
+ * usb read pipe.
+ */
+static int s2255_create_sys_buffers(struct s2255_dev *dev, unsigned long chn)
+{
+ unsigned long i;
+ unsigned long reqsize;
+ dprintk(1, "create sys buffers\n");
+ if (chn >= MAX_CHANNELS)
+ return -1;
+
+ dev->buffer[chn].dwFrames = SYS_FRAMES;
+
+ /* always allocate maximum size(PAL) for system buffers */
+ reqsize = SYS_FRAMES_MAXSIZE;
+
+ if (reqsize > SYS_FRAMES_MAXSIZE)
+ reqsize = SYS_FRAMES_MAXSIZE;
+
+ for (i = 0; i < SYS_FRAMES; i++) {
+ /* allocate the frames */
+ dev->buffer[chn].frame[i].lpvbits = vmalloc(reqsize);
+
+ dprintk(1, "valloc %p chan %lu, idx %lu, pdata %p\n",
+ &dev->buffer[chn].frame[i], chn, i,
+ dev->buffer[chn].frame[i].lpvbits);
+ dev->buffer[chn].frame[i].size = reqsize;
+ if (dev->buffer[chn].frame[i].lpvbits == NULL) {
+ printk(KERN_INFO "out of memory. using less frames\n");
+ dev->buffer[chn].dwFrames = i;
+ break;
+ }
+ }
+
+ /* make sure internal states are set */
+ for (i = 0; i < SYS_FRAMES; i++) {
+ dev->buffer[chn].frame[i].ulState = 0;
+ dev->buffer[chn].frame[i].cur_size = 0;
+ }
+
+ dev->cur_frame[chn] = 0;
+ dev->last_frame[chn] = -1;
+ return 0;
+}
+
+static int s2255_release_sys_buffers(struct s2255_dev *dev,
+ unsigned long channel)
+{
+ unsigned long i;
+ dprintk(1, "release sys buffers\n");
+ for (i = 0; i < SYS_FRAMES; i++) {
+ if (dev->buffer[channel].frame[i].lpvbits) {
+ dprintk(1, "vfree %p\n",
+ dev->buffer[channel].frame[i].lpvbits);
+ vfree(dev->buffer[channel].frame[i].lpvbits);
+ }
+ dev->buffer[channel].frame[i].lpvbits = NULL;
+ }
+ return 0;
+}
+
+static int s2255_board_init(struct s2255_dev *dev)
+{
+ int j;
+ struct mode2255i mode_def = { DEF_MODEI_NTSC_CONT };
+ int fw_ver;
+ dprintk(4, "board init: %p", dev);
+
+ for (j = 0; j < MAX_PIPE_BUFFERS; j++) {
+ struct s2255_pipeinfo *pipe = &dev->pipes[j];
+
+ memset(pipe, 0, sizeof(*pipe));
+ pipe->dev = dev;
+ pipe->cur_transfer_size = DEFAULT_PIPE_USBBLOCK;
+ pipe->max_transfer_size = MAX_PIPE_USBBLOCK;
+
+ if (pipe->cur_transfer_size > pipe->max_transfer_size)
+ pipe->cur_transfer_size = pipe->max_transfer_size;
+ pipe->transfer_buffer = kzalloc(pipe->max_transfer_size,
+ GFP_KERNEL);
+ if (pipe->transfer_buffer == NULL) {
+ dprintk(1, "out of memory!\n");
+ return -ENOMEM;
+ }
+
+ }
+
+ /* query the firmware */
+ fw_ver = s2255_get_fx2fw(dev);
+
+ printk(KERN_INFO "2255 usb firmware version %d \n", fw_ver);
+ if (fw_ver < CUR_USB_FWVER)
+ err("usb firmware not up to date %d\n", fw_ver);
+
+ for (j = 0; j < MAX_CHANNELS; j++) {
+ dev->b_acquire[j] = 0;
+ dev->mode[j] = mode_def;
+ dev->cur_fmt[j] = &formats[0];
+ dev->mode[j].restart = 1;
+ dev->req_image_size[j] = get_transfer_size(&mode_def);
+ dev->frame_count[j] = 0;
+ /* create the system buffers */
+ s2255_create_sys_buffers(dev, j);
+ }
+ /* start read pipe */
+ s2255_start_readpipe(dev);
+
+ dprintk(1, "S2255: board initialized\n");
+ return 0;
+}
+
+static int s2255_board_shutdown(struct s2255_dev *dev)
+{
+ u32 i;
+
+ dprintk(1, "S2255: board shutdown: %p", dev);
+
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ if (dev->b_acquire[i])
+ s2255_stop_acquire(dev, i);
+ }
+
+ s2255_stop_readpipe(dev);
+
+ for (i = 0; i < MAX_CHANNELS; i++)
+ s2255_release_sys_buffers(dev, i);
+
+ /* release transfer buffers */
+ for (i = 0; i < MAX_PIPE_BUFFERS; i++) {
+ struct s2255_pipeinfo *pipe = &dev->pipes[i];
+ kfree(pipe->transfer_buffer);
+ }
+ return 0;
+}
+
+static void read_pipe_completion(struct urb *purb)
+{
+ struct s2255_pipeinfo *pipe_info;
+ struct s2255_dev *dev;
+ int status;
+ int pipe;
+
+ pipe_info = purb->context;
+ dprintk(100, "read pipe completion %p, status %d\n", purb,
+ purb->status);
+ if (pipe_info == NULL) {
+ err("no context !");
+ return;
+ }
+
+ dev = pipe_info->dev;
+ if (dev == NULL) {
+ err("no context !");
+ return;
+ }
+ status = purb->status;
+ if (status != 0) {
+ dprintk(2, "read_pipe_completion: err\n");
+ return;
+ }
+
+ if (pipe_info->state == 0) {
+ dprintk(2, "exiting USB pipe");
+ return;
+ }
+
+ s2255_read_video_callback(dev, pipe_info);
+
+ pipe_info->err_count = 0;
+ pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
+ /* reuse urb */
+ usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
+ pipe,
+ pipe_info->transfer_buffer,
+ pipe_info->cur_transfer_size,
+ read_pipe_completion, pipe_info);
+
+ if (pipe_info->state != 0) {
+ if (usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL)) {
+ dev_err(&dev->udev->dev, "error submitting urb\n");
+ usb_free_urb(pipe_info->stream_urb);
+ }
+ } else {
+ dprintk(2, "read pipe complete state 0\n");
+ }
+ return;
+}
+
+static int s2255_start_readpipe(struct s2255_dev *dev)
+{
+ int pipe;
+ int retval;
+ int i;
+ struct s2255_pipeinfo *pipe_info = dev->pipes;
+ pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
+ dprintk(2, "start pipe IN %d\n", dev->read_endpoint);
+
+ for (i = 0; i < MAX_PIPE_BUFFERS; i++) {
+ pipe_info->state = 1;
+ pipe_info->buf_index = (u32) i;
+ pipe_info->priority_set = 0;
+ pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!pipe_info->stream_urb) {
+ dev_err(&dev->udev->dev,
+ "ReadStream: Unable to alloc URB");
+ return -ENOMEM;
+ }
+ /* transfer buffer allocated in board_init */
+ usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
+ pipe,
+ pipe_info->transfer_buffer,
+ pipe_info->cur_transfer_size,
+ read_pipe_completion, pipe_info);
+
+ pipe_info->urb_size = sizeof(pipe_info->stream_urb);
+ dprintk(4, "submitting URB %p\n", pipe_info->stream_urb);
+ retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL);
+ if (retval) {
+ printk(KERN_ERR "s2255: start read pipe failed\n");
+ return retval;
+ }
+ }
+
+ return 0;
+}
+
+/* starts acquisition process */
+static int s2255_start_acquire(struct s2255_dev *dev, unsigned long chn)
+{
+ unsigned char *buffer;
+ int res;
+ unsigned long chn_rev;
+ int j;
+ if (chn >= MAX_CHANNELS) {
+ dprintk(2, "start acquire failed, bad channel %lu\n", chn);
+ return -1;
+ }
+
+ chn_rev = G_chnmap[chn];
+ dprintk(1, "S2255: start acquire %lu \n", chn);
+
+ buffer = kzalloc(512, GFP_KERNEL);
+ if (buffer == NULL) {
+ dev_err(&dev->udev->dev, "out of mem\n");
+ return -ENOMEM;
+ }
+
+ dev->last_frame[chn] = -1;
+ dev->bad_payload[chn] = 0;
+ dev->cur_frame[chn] = 0;
+ for (j = 0; j < SYS_FRAMES; j++) {
+ dev->buffer[chn].frame[j].ulState = 0;
+ dev->buffer[chn].frame[j].cur_size = 0;
+ }
+
+ /* send the start command */
+ *(u32 *) buffer = IN_DATA_TOKEN;
+ *((u32 *) buffer + 1) = (u32) chn_rev;
+ *((u32 *) buffer + 2) = (u32) CMD_START;
+ res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
+ if (res != 0)
+ dev_err(&dev->udev->dev, "CMD_START error\n");
+
+ dprintk(2, "start acquire exit[%lu] %d \n", chn, res);
+ kfree(buffer);
+ return 0;
+}
+
+static int s2255_stop_acquire(struct s2255_dev *dev, unsigned long chn)
+{
+ unsigned char *buffer;
+ int res;
+ unsigned long chn_rev;
+
+ if (chn >= MAX_CHANNELS) {
+ dprintk(2, "stop acquire failed, bad channel %lu\n", chn);
+ return -1;
+ }
+ chn_rev = G_chnmap[chn];
+
+ buffer = kzalloc(512, GFP_KERNEL);
+ if (buffer == NULL) {
+ dev_err(&dev->udev->dev, "out of mem\n");
+ return -ENOMEM;
+ }
+
+ /* send the stop command */
+ dprintk(4, "stop acquire %lu\n", chn);
+ *(u32 *) buffer = IN_DATA_TOKEN;
+ *((u32 *) buffer + 1) = (u32) chn_rev;
+ *((u32 *) buffer + 2) = CMD_STOP;
+ res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
+
+ if (res != 0)
+ dev_err(&dev->udev->dev, "CMD_STOP error\n");
+
+ dprintk(4, "stop acquire: releasing states \n");
+
+ kfree(buffer);
+ dev->b_acquire[chn] = 0;
+
+ return 0;
+}
+
+static void s2255_stop_readpipe(struct s2255_dev *dev)
+{
+ int j;
+
+ if (dev == NULL) {
+ err("s2255: invalid device");
+ return;
+ }
+ dprintk(4, "stop read pipe\n");
+ for (j = 0; j < MAX_PIPE_BUFFERS; j++) {
+ struct s2255_pipeinfo *pipe_info = &dev->pipes[j];
+ if (pipe_info) {
+ if (pipe_info->state == 0)
+ continue;
+ pipe_info->state = 0;
+ pipe_info->prev_state = 1;
+
+ }
+ }
+
+ for (j = 0; j < MAX_PIPE_BUFFERS; j++) {
+ struct s2255_pipeinfo *pipe_info = &dev->pipes[j];
+ 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;
+ }
+ }
+ dprintk(2, "s2255 stop read pipe: %d\n", j);
+ return;
+}
+
+/* standard usb probe function */
+static int s2255_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct s2255_dev *dev = NULL;
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ int i;
+ int retval = -ENOMEM;
+
+ dprintk(100, "s2255: probe\n");
+
+ /* allocate memory for our device state and initialize it to zero */
+ dev = kzalloc(sizeof(struct s2255_dev), GFP_KERNEL);
+ if (dev == NULL) {
+ err("s2255: out of memory");
+ goto error;
+ }
+
+ /* grab usb_device and save it */
+ dev->udev = usb_get_dev(interface_to_usbdev(interface));
+ if (dev->udev == NULL) {
+ dev_err(&interface->dev, "null usb device\n");
+ goto error;
+ }
+
+ kref_init(&dev->kref);
+ dprintk(1, "dev: %p, kref: %p udev %p interface %p\n", dev, &dev->kref,
+ dev->udev, interface);
+ dev->interface = interface;
+ /* set up the endpoint information */
+ iface_desc = interface->cur_altsetting;
+ dprintk(1, "num endpoints %d\n", iface_desc->desc.bNumEndpoints);
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+ if (!dev->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) {
+ /* we found the bulk in endpoint */
+ dev->read_endpoint = endpoint->bEndpointAddress;
+ }
+ }
+
+ if (!dev->read_endpoint) {
+ dev_err(&interface->dev, "Could not find bulk-in endpoint");
+ goto error;
+ }
+
+ /* set intfdata */
+ usb_set_intfdata(interface, dev);
+
+ dprintk(100, "after intfdata %p\n", dev);
+
+ /* initialize device mutex */
+ mutex_init(&dev->lock);
+
+ init_timer(&dev->timer);
+ dev->timer.function = s2255_timer;
+ dev->fw_data = kzalloc(sizeof(struct complete_data), GFP_KERNEL);
+ if (!dev->fw_data)
+ goto error;
+
+ dev->timer.data = (unsigned long)dev->fw_data;
+ dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL);
+
+ if (!dev->fw_data->fw_urb) {
+ dev_err(&interface->dev, "out of memory!\n");
+ goto error;
+ }
+ dev->fw_data->pfw_data = kzalloc(CHUNK_SIZE, GFP_KERNEL);
+ if (!dev->fw_data->pfw_data) {
+ dev_err(&interface->dev, "out of memory!\n");
+ goto error;
+ }
+ /* load the first chunk */
+ if (request_firmware(&dev->fw_data->fw,
+ FIRMWARE_FILE_NAME, &dev->udev->dev)) {
+ printk(KERN_ERR "sensoray 2255 failed to get firmware\n");
+ goto error;
+ }
+
+ dev->fw_data->fw_size = dev->fw_data->fw->size;
+ memcpy(dev->fw_data->pfw_data, dev->fw_data->fw->data, CHUNK_SIZE);
+ dev->fw_data->fw_loaded = CHUNK_SIZE;
+ usb_fill_bulk_urb(dev->fw_data->fw_urb, dev->udev,
+ usb_sndbulkpipe(dev->udev, 2), dev->fw_data->pfw_data,
+ CHUNK_SIZE, s2255_fwchunk_complete, dev->fw_data);
+ /* loads v4l specific */
+ s2255_probe_v4l(dev);
+ /* load 2255 board specific */
+ s2255_board_init(dev);
+
+ dev_info(&interface->dev, "Sensoray 2255 successfully loaded\n");
+ dprintk(4, "before probe done %p\n", dev);
+
+ mod_timer(&dev->timer, jiffies + HZ);
+ spin_lock_init(&dev->slock);
+ kref_get(&dev->kref);
+ return 0;
+error:
+ return retval;
+}
+
+/* disconnect routine. when board is removed physically or with rmmod */
+static void s2255_disconnect(struct usb_interface *interface)
+{
+ struct s2255_dev *dev = NULL;
+
+ /* lock to prevent s2255_open() from racing s2255_disconnect() */
+ mutex_lock(&usb_s2255_open_mutex);
+ dprintk(1, "s2255: disconnect interface %p\n", interface);
+ dev = usb_get_intfdata(interface);
+ s2255_board_shutdown(dev);
+ if (dev->fw_data->fw) {
+ release_firmware(dev->fw_data->fw);
+ dev->fw_data->fw = NULL;
+ }
+ if (dev->fw_data->fw_urb) {
+ dprintk(2, "kill URB\n");
+ usb_kill_urb(dev->fw_data->fw_urb);
+ usb_free_urb(dev->fw_data->fw_urb);
+
+ }
+ s2255_exit_v4l(dev);
+ if (dev->fw_data) {
+ kfree(dev->fw_data->pfw_data);
+ kfree(dev->fw_data);
+ }
+ usb_set_intfdata(interface, NULL);
+ kref_put(&dev->kref, s2255_destroy);
+ mutex_unlock(&usb_s2255_open_mutex);
+ dev_info(&interface->dev, "s2255usb now disconnected\n");
+}
+
+static struct usb_driver s2255_driver = {
+ .name = "s2255",
+ .probe = s2255_probe,
+ .disconnect = s2255_disconnect,
+ .id_table = s2255_table,
+};
+
+static int __init usb_s2255_init(void)
+{
+ int result;
+
+ /* register this driver with the USB subsystem */
+ result = usb_register(&s2255_driver);
+
+ if (result)
+ err("usb_register failed. Error number %d", result);
+
+ dprintk(2, "s2255_init: done\n");
+ return result;
+}
+
+static void __exit usb_s2255_exit(void)
+{
+ usb_deregister(&s2255_driver);
+}
+
+module_init(usb_s2255_init);
+module_exit(usb_s2255_exit);
+MODULE_DESCRIPTION("Sensoray 2255 Video for Linux driver");
+MODULE_AUTHOR("D.A.(Sensoray)");
+MODULE_LICENSE("GPL");
--
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