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-rw-r--r--drivers/media/usb/s2255/Kconfig9
-rw-r--r--drivers/media/usb/s2255/Makefile2
-rw-r--r--drivers/media/usb/s2255/s2255drv.c2690
3 files changed, 2701 insertions, 0 deletions
diff --git a/drivers/media/usb/s2255/Kconfig b/drivers/media/usb/s2255/Kconfig
new file mode 100644
index 00000000000..7e8ee1f864a
--- /dev/null
+++ b/drivers/media/usb/s2255/Kconfig
@@ -0,0 +1,9 @@
+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.
+
diff --git a/drivers/media/usb/s2255/Makefile b/drivers/media/usb/s2255/Makefile
new file mode 100644
index 00000000000..197d0bb2adf
--- /dev/null
+++ b/drivers/media/usb/s2255/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_USB_S2255) += s2255drv.o
+
diff --git a/drivers/media/usb/s2255/s2255drv.c b/drivers/media/usb/s2255/s2255drv.c
new file mode 100644
index 00000000000..2191f6ddf9e
--- /dev/null
+++ b/drivers/media/usb/s2255/s2255drv.c
@@ -0,0 +1,2690 @@
+/*
+ * s2255drv.c - a driver for the Sensoray 2255 USB video capture device
+ *
+ * Copyright (C) 2007-2010 by Sensoray Company Inc.
+ * Dean Anderson
+ *
+ * Some video buffer code based on vivi driver:
+ *
+ * Sensoray 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.
+ *
+ * Example maximum bandwidth utilization:
+ *
+ * -full size, color mode YUYV or YUV422P: 2 channels at once
+ * -full or half size Grey scale: all 4 channels at once
+ * -half size, color mode YUYV or YUV422P: all 4 channels at once
+ * -full size, color mode YUYV or YUV422P 1/2 frame rate: all 4 channels
+ * at once.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <linux/mm.h>
+#include <media/videobuf-vmalloc.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <linux/vmalloc.h>
+#include <linux/usb.h>
+
+#define S2255_VERSION "1.22.1"
+#define FIRMWARE_FILE_NAME "f2255usb.bin"
+
+/* default JPEG quality */
+#define S2255_DEF_JPEG_QUAL 50
+/* vendor request in */
+#define S2255_VR_IN 0
+/* vendor request out */
+#define S2255_VR_OUT 1
+/* firmware query */
+#define S2255_VR_FW 0x30
+/* USB endpoint number for configuring the device */
+#define S2255_CONFIG_EP 2
+/* maximum time for DSP to start responding after last FW word loaded(ms) */
+#define S2255_DSP_BOOTTIME 800
+/* maximum time to wait for firmware to load (ms) */
+#define S2255_LOAD_TIMEOUT (5000 + S2255_DSP_BOOTTIME)
+#define S2255_DEF_BUFS 16
+#define S2255_SETMODE_TIMEOUT 500
+#define S2255_VIDSTATUS_TIMEOUT 350
+#define S2255_MARKER_FRAME cpu_to_le32(0x2255DA4AL)
+#define S2255_MARKER_RESPONSE cpu_to_le32(0x2255ACACL)
+#define S2255_RESPONSE_SETMODE cpu_to_le32(0x01)
+#define S2255_RESPONSE_FW cpu_to_le32(0x10)
+#define S2255_RESPONSE_STATUS cpu_to_le32(0x20)
+#define S2255_USB_XFER_SIZE (16 * 1024)
+#define MAX_CHANNELS 4
+#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 S2255_USB_XFER_SIZE
+#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) */
+/* SCALE_4CIFSI is the 2 fields interpolated into one */
+#define SCALE_4CIFSI 4 /* 640x480(NTSC) or 704x576(PAL) high quality */
+
+#define COLOR_YUVPL 1 /* YUV planar */
+#define COLOR_YUVPK 2 /* YUV packed */
+#define COLOR_Y8 4 /* monochrome */
+#define COLOR_JPG 5 /* JPEG */
+
+#define MASK_COLOR 0x000000ff
+#define MASK_JPG_QUALITY 0x0000ff00
+#define MASK_INPUT_TYPE 0x000f0000
+/* frame decimation. */
+#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 cpu_to_le32(0x2255c0de)
+#define CMD_2255 0xc2255000
+#define CMD_SET_MODE cpu_to_le32((CMD_2255 | 0x10))
+#define CMD_START cpu_to_le32((CMD_2255 | 0x20))
+#define CMD_STOP cpu_to_le32((CMD_2255 | 0x30))
+#define CMD_STATUS cpu_to_le32((CMD_2255 | 0x40))
+
+struct s2255_mode {
+ 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 */
+};
+
+
+#define S2255_READ_IDLE 0
+#define S2255_READ_FRAME 1
+
+/* frame structure */
+struct s2255_framei {
+ unsigned long size;
+ unsigned long ulState; /* ulState:S2255_READ_IDLE, S2255_READ_FRAME*/
+ void *lpvbits; /* image data */
+ unsigned long cur_size; /* current data copied to it */
+};
+
+/* image buffer structure */
+struct s2255_bufferi {
+ unsigned long dwFrames; /* number of frames in buffer */
+ struct s2255_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}
+
+struct s2255_dmaqueue {
+ struct list_head active;
+ struct s2255_dev *dev;
+};
+
+/* for firmware loading, fw_state */
+#define S2255_FW_NOTLOADED 0
+#define S2255_FW_LOADED_DSPWAIT 1
+#define S2255_FW_SUCCESS 2
+#define S2255_FW_FAILED 3
+#define S2255_FW_DISCONNECTING 4
+#define S2255_FW_MARKER cpu_to_le32(0x22552f2f)
+/* 2255 read states */
+#define S2255_READ_IDLE 0
+#define S2255_READ_FRAME 1
+struct s2255_fw {
+ int fw_loaded;
+ int fw_size;
+ struct urb *fw_urb;
+ atomic_t fw_state;
+ void *pfw_data;
+ wait_queue_head_t wait_fw;
+ const struct firmware *fw;
+};
+
+struct s2255_pipeinfo {
+ u32 max_transfer_size;
+ u32 cur_transfer_size;
+ u8 *transfer_buffer;
+ u32 state;
+ void *stream_urb;
+ void *dev; /* back pointer to s2255_dev struct*/
+ u32 err_count;
+ u32 idx;
+};
+
+struct s2255_fmt; /*forward declaration */
+struct s2255_dev;
+
+struct s2255_channel {
+ struct video_device vdev;
+ int resources;
+ struct s2255_dmaqueue vidq;
+ struct s2255_bufferi buffer;
+ struct s2255_mode mode;
+ /* jpeg compression */
+ struct v4l2_jpegcompression jc;
+ /* capture parameters (for high quality mode full size) */
+ struct v4l2_captureparm cap_parm;
+ int cur_frame;
+ int last_frame;
+
+ int b_acquire;
+ /* allocated image size */
+ unsigned long req_image_size;
+ /* received packet size */
+ unsigned long pkt_size;
+ int bad_payload;
+ unsigned long frame_count;
+ /* if JPEG image */
+ int jpg_size;
+ /* if channel configured to default state */
+ int configured;
+ wait_queue_head_t wait_setmode;
+ int setmode_ready;
+ /* video status items */
+ int vidstatus;
+ wait_queue_head_t wait_vidstatus;
+ int vidstatus_ready;
+ unsigned int width;
+ unsigned int height;
+ const struct s2255_fmt *fmt;
+ int idx; /* channel number on device, 0-3 */
+};
+
+
+struct s2255_dev {
+ struct s2255_channel channel[MAX_CHANNELS];
+ struct v4l2_device v4l2_dev;
+ atomic_t num_channels;
+ int frames;
+ struct mutex lock; /* channels[].vdev.lock */
+ struct usb_device *udev;
+ struct usb_interface *interface;
+ u8 read_endpoint;
+ struct timer_list timer;
+ struct s2255_fw *fw_data;
+ struct s2255_pipeinfo pipe;
+ u32 cc; /* current channel */
+ int frame_ready;
+ int chn_ready;
+ spinlock_t slock;
+ /* dsp firmware version (f2255usb.bin) */
+ int dsp_fw_ver;
+ u16 pid; /* product id */
+};
+
+static inline struct s2255_dev *to_s2255_dev(struct v4l2_device *v4l2_dev)
+{
+ return container_of(v4l2_dev, struct s2255_dev, v4l2_dev);
+}
+
+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;
+};
+
+struct s2255_fh {
+ struct s2255_dev *dev;
+ struct videobuf_queue vb_vidq;
+ enum v4l2_buf_type type;
+ struct s2255_channel *channel;
+ int resources;
+};
+
+/* current cypress EEPROM firmware version */
+#define S2255_CUR_USB_FWVER ((3 << 8) | 12)
+/* current DSP FW version */
+#define S2255_CUR_DSP_FWVER 10104
+/* Need DSP version 5+ for video status feature */
+#define S2255_MIN_DSP_STATUS 5
+#define S2255_MIN_DSP_COLORFILTER 8
+#define S2255_NORMS (V4L2_STD_PAL | V4L2_STD_NTSC)
+
+/* private V4L2 controls */
+
+/*
+ * The following chart displays how COLORFILTER should be set
+ * =========================================================
+ * = fourcc = COLORFILTER =
+ * = ===============================
+ * = = 0 = 1 =
+ * =========================================================
+ * = V4L2_PIX_FMT_GREY(Y8) = monochrome from = monochrome=
+ * = = s-video or = composite =
+ * = = B/W camera = input =
+ * =========================================================
+ * = other = color, svideo = color, =
+ * = = = composite =
+ * =========================================================
+ *
+ * Notes:
+ * channels 0-3 on 2255 are composite
+ * channels 0-1 on 2257 are composite, 2-3 are s-video
+ * If COLORFILTER is 0 with a composite color camera connected,
+ * the output will appear monochrome but hatching
+ * will occur.
+ * COLORFILTER is different from "color killer" and "color effects"
+ * for reasons above.
+ */
+#define S2255_V4L2_YC_ON 1
+#define S2255_V4L2_YC_OFF 0
+#define V4L2_CID_PRIVATE_COLORFILTER (V4L2_CID_PRIVATE_BASE + 0)
+
+/* frame prefix size (sent once every frame) */
+#define PREFIX_SIZE 512
+
+/* Channels on box are in reverse order */
+static unsigned long G_chnmap[MAX_CHANNELS] = {3, 2, 1, 0};
+
+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_channel *channel);
+static int s2255_stop_acquire(struct s2255_channel *channel);
+static void s2255_fillbuff(struct s2255_channel *chn, struct s2255_buffer *buf,
+ int jpgsize);
+static int s2255_set_mode(struct s2255_channel *chan, struct s2255_mode *mode);
+static int s2255_board_shutdown(struct s2255_dev *dev);
+static void s2255_fwload_start(struct s2255_dev *dev, int reset);
+static void s2255_destroy(struct s2255_dev *dev);
+static long s2255_vendor_req(struct s2255_dev *dev, unsigned char req,
+ u16 index, u16 value, void *buf,
+ s32 buf_len, int bOut);
+
+/* dev_err macro with driver name */
+#define S2255_DRIVER_NAME "s2255"
+#define s2255_dev_err(dev, fmt, arg...) \
+ dev_err(dev, S2255_DRIVER_NAME " - " fmt, ##arg)
+
+#define dprintk(level, fmt, arg...) \
+ do { \
+ if (*s2255_debug >= (level)) { \
+ printk(KERN_DEBUG S2255_DRIVER_NAME \
+ ": " fmt, ##arg); \
+ } \
+ } while (0)
+
+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 */
+
+/* Enable jpeg capture. */
+static int jpeg_enable = 1;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level(0-100) default 0");
+module_param(vid_limit, int, 0644);
+MODULE_PARM_DESC(vid_limit, "video memory limit(Mb)");
+module_param(video_nr, int, 0644);
+MODULE_PARM_DESC(video_nr, "start video minor(-1 default autodetect)");
+module_param(jpeg_enable, int, 0644);
+MODULE_PARM_DESC(jpeg_enable, "Jpeg enable(1-on 0-off) default 1");
+
+/* USB device table */
+#define USB_SENSORAY_VID 0x1943
+static struct usb_device_id s2255_table[] = {
+ {USB_DEVICE(USB_SENSORAY_VID, 0x2255)},
+ {USB_DEVICE(USB_SENSORAY_VID, 0x2257)}, /*same family as 2255*/
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, s2255_table);
+
+#define BUFFER_TIMEOUT msecs_to_jiffies(400)
+
+/* image formats. */
+/* JPEG formats must be defined last to support jpeg_enable parameter */
+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 = "4:2:2, packed, UYVY",
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .depth = 16
+ }, {
+ .name = "8bpp GREY",
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .depth = 8
+ }, {
+ .name = "JPG",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .depth = 24
+ }, {
+ .name = "MJPG",
+ .fourcc = V4L2_PIX_FMT_MJPEG,
+ .depth = 24
+ }
+};
+
+static int norm_maxw(struct video_device *vdev)
+{
+ return (vdev->current_norm & V4L2_STD_NTSC) ?
+ LINE_SZ_4CIFS_NTSC : LINE_SZ_4CIFS_PAL;
+}
+
+static int norm_maxh(struct video_device *vdev)
+{
+ return (vdev->current_norm & V4L2_STD_NTSC) ?
+ (NUM_LINES_1CIFS_NTSC * 2) : (NUM_LINES_1CIFS_PAL * 2);
+}
+
+static int norm_minw(struct video_device *vdev)
+{
+ return (vdev->current_norm & V4L2_STD_NTSC) ?
+ LINE_SZ_1CIFS_NTSC : LINE_SZ_1CIFS_PAL;
+}
+
+static int norm_minh(struct video_device *vdev)
+{
+ return (vdev->current_norm & V4L2_STD_NTSC) ?
+ (NUM_LINES_1CIFS_NTSC) : (NUM_LINES_1CIFS_PAL);
+}
+
+
+/*
+ * TODO: fixme: move YUV reordering to hardware
+ * converts 2255 planar format to yuyv or uyvy
+ */
+static void planar422p_to_yuv_packed(const unsigned char *in,
+ unsigned char *out,
+ int width, int height,
+ int fmt)
+{
+ 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] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCr++;
+ out[i + 1] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCr++ : *pY++;
+ out[i + 2] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCb++;
+ out[i + 3] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCb++ : *pY++;
+ }
+ return;
+}
+
+static void s2255_reset_dsppower(struct s2255_dev *dev)
+{
+ s2255_vendor_req(dev, 0x40, 0x0000, 0x0001, NULL, 0, 1);
+ msleep(10);
+ s2255_vendor_req(dev, 0x50, 0x0000, 0x0000, NULL, 0, 1);
+ msleep(600);
+ s2255_vendor_req(dev, 0x10, 0x0000, 0x0000, NULL, 0, 1);
+ return;
+}
+
+/* kickstarts the firmware loading. from probe
+ */
+static void s2255_timer(unsigned long user_data)
+{
+ struct s2255_fw *data = (struct s2255_fw *)user_data;
+ dprintk(100, "%s\n", __func__);
+ if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
+ printk(KERN_ERR "s2255: can't submit urb\n");
+ atomic_set(&data->fw_state, S2255_FW_FAILED);
+ /* wake up anything waiting for the firmware */
+ wake_up(&data->wait_fw);
+ 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 s2255_fw *data = urb->context;
+ struct usb_device *udev = urb->dev;
+ int len;
+ dprintk(100, "%s: udev %p urb %p", __func__, udev, urb);
+ if (urb->status) {
+ dev_err(&udev->dev, "URB failed with status %d\n", urb->status);
+ atomic_set(&data->fw_state, S2255_FW_FAILED);
+ /* wake up anything waiting for the firmware */
+ wake_up(&data->wait_fw);
+ return;
+ }
+ if (data->fw_urb == NULL) {
+ s2255_dev_err(&udev->dev, "disconnected\n");
+ atomic_set(&data->fw_state, S2255_FW_FAILED);
+ /* wake up anything waiting for the firmware */
+ wake_up(&data->wait_fw);
+ 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");
+ atomic_set(&data->fw_state, S2255_FW_FAILED);
+ /* wake up anything waiting for the firmware */
+ wake_up(&data->wait_fw);
+ return;
+ }
+ data->fw_loaded += len;
+ } else {
+ atomic_set(&data->fw_state, S2255_FW_LOADED_DSPWAIT);
+ dprintk(100, "%s: firmware upload complete\n", __func__);
+ }
+ return;
+
+}
+
+static int s2255_got_frame(struct s2255_channel *channel, int jpgsize)
+{
+ struct s2255_dmaqueue *dma_q = &channel->vidq;
+ struct s2255_buffer *buf;
+ struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
+ unsigned long flags = 0;
+ int rc = 0;
+ spin_lock_irqsave(&dev->slock, flags);
+ if (list_empty(&dma_q->active)) {
+ dprintk(1, "No active queue to serve\n");
+ rc = -1;
+ goto unlock;
+ }
+ buf = list_entry(dma_q->active.next,
+ struct s2255_buffer, vb.queue);
+ list_del(&buf->vb.queue);
+ do_gettimeofday(&buf->vb.ts);
+ s2255_fillbuff(channel, buf, jpgsize);
+ wake_up(&buf->vb.done);
+ dprintk(2, "%s: [buf/i] [%p/%d]\n", __func__, buf, buf->vb.i);
+unlock:
+ spin_unlock_irqrestore(&dev->slock, flags);
+ return rc;
+}
+
+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 (!jpeg_enable && ((formats[i].fourcc == V4L2_PIX_FMT_JPEG) ||
+ (formats[i].fourcc == V4L2_PIX_FMT_MJPEG)))
+ continue;
+ if (formats[i].fourcc == fourcc)
+ return formats + i;
+ }
+ return NULL;
+}
+
+/* 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 s2255_fillbuff(struct s2255_channel *channel,
+ struct s2255_buffer *buf, int jpgsize)
+{
+ int pos = 0;
+ struct timeval ts;
+ const char *tmpbuf;
+ char *vbuf = videobuf_to_vmalloc(&buf->vb);
+ unsigned long last_frame;
+
+ if (!vbuf)
+ return;
+ last_frame = channel->last_frame;
+ if (last_frame != -1) {
+ tmpbuf =
+ (const char *)channel->buffer.frame[last_frame].lpvbits;
+ switch (buf->fmt->fourcc) {
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ planar422p_to_yuv_packed((const unsigned char *)tmpbuf,
+ vbuf, buf->vb.width,
+ buf->vb.height,
+ buf->fmt->fourcc);
+ break;
+ case V4L2_PIX_FMT_GREY:
+ memcpy(vbuf, tmpbuf, buf->vb.width * buf->vb.height);
+ break;
+ case V4L2_PIX_FMT_JPEG:
+ case V4L2_PIX_FMT_MJPEG:
+ buf->vb.size = jpgsize;
+ memcpy(vbuf, tmpbuf, buf->vb.size);
+ break;
+ case V4L2_PIX_FMT_YUV422P:
+ memcpy(vbuf, tmpbuf,
+ buf->vb.width * buf->vb.height * 2);
+ break;
+ default:
+ printk(KERN_DEBUG "s2255: unknown format?\n");
+ }
+ channel->last_frame = -1;
+ } 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.field_count = channel->frame_count * 2;
+ do_gettimeofday(&ts);
+ buf->vb.ts = ts;
+ buf->vb.state = VIDEOBUF_DONE;
+}
+
+
+/* ------------------------------------------------------------------
+ Videobuf operations
+ ------------------------------------------------------------------*/
+
+static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
+ unsigned int *size)
+{
+ struct s2255_fh *fh = vq->priv_data;
+ struct s2255_channel *channel = fh->channel;
+ *size = channel->width * channel->height * (channel->fmt->depth >> 3);
+
+ if (0 == *count)
+ *count = S2255_DEF_BUFS;
+
+ if (*size * *count > vid_limit * 1024 * 1024)
+ *count = (vid_limit * 1024 * 1024) / *size;
+
+ return 0;
+}
+
+static void free_buffer(struct videobuf_queue *vq, struct s2255_buffer *buf)
+{
+ dprintk(4, "%s\n", __func__);
+
+ videobuf_vmalloc_free(&buf->vb);
+ buf->vb.state = VIDEOBUF_NEEDS_INIT;
+}
+
+static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct s2255_fh *fh = vq->priv_data;
+ struct s2255_channel *channel = fh->channel;
+ struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
+ int rc;
+ int w = channel->width;
+ int h = channel->height;
+ dprintk(4, "%s, field=%d\n", __func__, field);
+ if (channel->fmt == NULL)
+ return -EINVAL;
+
+ if ((w < norm_minw(&channel->vdev)) ||
+ (w > norm_maxw(&channel->vdev)) ||
+ (h < norm_minh(&channel->vdev)) ||
+ (h > norm_maxh(&channel->vdev))) {
+ dprintk(4, "invalid buffer prepare\n");
+ return -EINVAL;
+ }
+ buf->vb.size = w * h * (channel->fmt->depth >> 3);
+ if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) {
+ dprintk(4, "invalid buffer prepare\n");
+ return -EINVAL;
+ }
+
+ buf->fmt = channel->fmt;
+ buf->vb.width = w;
+ buf->vb.height = h;
+ buf->vb.field = field;
+
+ if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+ 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 s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
+ struct s2255_fh *fh = vq->priv_data;
+ struct s2255_channel *channel = fh->channel;
+ struct s2255_dmaqueue *vidq = &channel->vidq;
+ dprintk(1, "%s\n", __func__);
+ buf->vb.state = VIDEOBUF_QUEUED;
+ list_add_tail(&buf->vb.queue, &vidq->active);
+}
+
+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->idx);
+ 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,
+};
+
+
+static int res_get(struct s2255_fh *fh)
+{
+ struct s2255_channel *channel = fh->channel;
+ /* is it free? */
+ if (channel->resources)
+ return 0; /* no, someone else uses it */
+ /* it's free, grab it */
+ channel->resources = 1;
+ fh->resources = 1;
+ dprintk(1, "s2255: res: get\n");
+ return 1;
+}
+
+static int res_locked(struct s2255_fh *fh)
+{
+ return fh->channel->resources;
+}
+
+static int res_check(struct s2255_fh *fh)
+{
+ return fh->resources;
+}
+
+
+static void res_free(struct s2255_fh *fh)
+{
+ struct s2255_channel *channel = fh->channel;
+ channel->resources = 0;
+ fh->resources = 0;
+ dprintk(1, "res: put\n");
+}
+
+static int vidioc_querymenu(struct file *file, void *priv,
+ struct v4l2_querymenu *qmenu)
+{
+ static const char *colorfilter[] = {
+ "Off",
+ "On",
+ NULL
+ };
+ if (qmenu->id == V4L2_CID_PRIVATE_COLORFILTER) {
+ int i;
+ const char **menu_items = colorfilter;
+ for (i = 0; i < qmenu->index && menu_items[i]; i++)
+ ; /* do nothing (from v4l2-common.c) */
+ if (menu_items[i] == NULL || menu_items[i][0] == '\0')
+ return -EINVAL;
+ strlcpy(qmenu->name, menu_items[qmenu->index],
+ sizeof(qmenu->name));
+ return 0;
+ }
+ return v4l2_ctrl_query_menu(qmenu, NULL, NULL);
+}
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct s2255_fh *fh = file->private_data;
+ struct s2255_dev *dev = fh->dev;
+ strlcpy(cap->driver, "s2255", sizeof(cap->driver));
+ strlcpy(cap->card, "s2255", sizeof(cap->card));
+ usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ int index = f->index;
+
+ if (index >= ARRAY_SIZE(formats))
+ return -EINVAL;
+ if (!jpeg_enable && ((formats[index].fourcc == V4L2_PIX_FMT_JPEG) ||
+ (formats[index].fourcc == V4L2_PIX_FMT_MJPEG)))
+ 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_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_channel *channel = fh->channel;
+
+ f->fmt.pix.width = channel->width;
+ f->fmt.pix.height = channel->height;
+ f->fmt.pix.field = fh->vb_vidq.field;
+ f->fmt.pix.pixelformat = channel->fmt->fourcc;
+ f->fmt.pix.bytesperline = f->fmt.pix.width * (channel->fmt->depth >> 3);
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ return 0;
+}
+
+static int vidioc_try_fmt_vid_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_channel *channel = fh->channel;
+ int is_ntsc;
+ is_ntsc =
+ (channel->vdev.current_norm & V4L2_STD_NTSC) ? 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(50, "%s NTSC: %d suggested width: %d, height: %d\n",
+ __func__, is_ntsc, 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) {
+ f->fmt.pix.width = LINE_SZ_4CIFS_PAL;
+ field = V4L2_FIELD_SEQ_TB;
+ } else if (f->fmt.pix.width >= LINE_SZ_2CIFS_PAL) {
+ f->fmt.pix.width = LINE_SZ_2CIFS_PAL;
+ field = V4L2_FIELD_TOP;
+ } else if (f->fmt.pix.width >= LINE_SZ_1CIFS_PAL) {
+ f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
+ field = V4L2_FIELD_TOP;
+ } else {
+ f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
+ field = V4L2_FIELD_TOP;
+ }
+ }
+ 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;
+ dprintk(50, "%s: set width %d height %d field %d\n", __func__,
+ f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
+ return 0;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_channel *channel = fh->channel;
+ const struct s2255_fmt *fmt;
+ struct videobuf_queue *q = &fh->vb_vidq;
+ struct s2255_mode mode;
+ int ret;
+
+ ret = vidioc_try_fmt_vid_cap(file, fh, f);
+
+ if (ret < 0)
+ return ret;
+
+ fmt = format_by_fourcc(f->fmt.pix.pixelformat);
+
+ if (fmt == NULL)
+ return -EINVAL;
+
+ mutex_lock(&q->vb_lock);
+
+ if (videobuf_queue_is_busy(&fh->vb_vidq)) {
+ dprintk(1, "queue busy\n");
+ ret = -EBUSY;
+ goto out_s_fmt;
+ }
+
+ if (res_locked(fh)) {
+ dprintk(1, "%s: channel busy\n", __func__);
+ ret = -EBUSY;
+ goto out_s_fmt;
+ }
+ mode = channel->mode;
+ channel->fmt = fmt;
+ channel->width = f->fmt.pix.width;
+ channel->height = f->fmt.pix.height;
+ fh->vb_vidq.field = f->fmt.pix.field;
+ fh->type = f->type;
+ if (channel->width > norm_minw(&channel->vdev)) {
+ if (channel->height > norm_minh(&channel->vdev)) {
+ if (channel->cap_parm.capturemode &
+ V4L2_MODE_HIGHQUALITY)
+ mode.scale = SCALE_4CIFSI;
+ else
+ mode.scale = SCALE_4CIFS;
+ } else
+ mode.scale = SCALE_2CIFS;
+
+ } else {
+ mode.scale = SCALE_1CIFS;
+ }
+ /* color mode */
+ switch (channel->fmt->fourcc) {
+ case V4L2_PIX_FMT_GREY:
+ mode.color &= ~MASK_COLOR;
+ mode.color |= COLOR_Y8;
+ break;
+ case V4L2_PIX_FMT_JPEG:
+ case V4L2_PIX_FMT_MJPEG:
+ mode.color &= ~MASK_COLOR;
+ mode.color |= COLOR_JPG;
+ mode.color |= (channel->jc.quality << 8);
+ break;
+ case V4L2_PIX_FMT_YUV422P:
+ mode.color &= ~MASK_COLOR;
+ mode.color |= COLOR_YUVPL;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ default:
+ mode.color &= ~MASK_COLOR;
+ mode.color |= COLOR_YUVPK;
+ break;
+ }
+ if ((mode.color & MASK_COLOR) != (channel->mode.color & MASK_COLOR))
+ mode.restart = 1;
+ else if (mode.scale != channel->mode.scale)
+ mode.restart = 1;
+ else if (mode.format != channel->mode.format)
+ mode.restart = 1;
+ channel->mode = mode;
+ (void) s2255_set_mode(channel, &mode);
+ ret = 0;
+out_s_fmt:
+ mutex_unlock(&q->vb_lock);
+ return ret;
+}
+
+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;
+}
+
+/* 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, S2255_CONFIG_EP);
+ retval = usb_bulk_msg(udev, pipe, pbuf, size, &done, 500);
+ }
+ return retval;
+}
+
+static u32 get_transfer_size(struct s2255_mode *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:
+ case SCALE_4CIFSI:
+ 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:
+ case SCALE_4CIFSI:
+ 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 & MASK_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 s2255_print_cfg(struct s2255_dev *sdev, struct s2255_mode *mode)
+{
+ struct device *dev = &sdev->udev->dev;
+ dev_info(dev, "------------------------------------------------\n");
+ dev_info(dev, "format: %d\nscale %d\n", mode->format, mode->scale);
+ dev_info(dev, "fdec: %d\ncolor %d\n", mode->fdec, mode->color);
+ dev_info(dev, "bright: 0x%x\n", mode->bright);
+ dev_info(dev, "------------------------------------------------\n");
+}
+
+/*
+ * set mode is the function which controls the DSP.
+ * the restart parameter in struct s2255_mode 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_channel *channel,
+ struct s2255_mode *mode)
+{
+ int res;
+ __le32 *buffer;
+ unsigned long chn_rev;
+ struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
+ chn_rev = G_chnmap[channel->idx];
+ dprintk(3, "%s channel: %d\n", __func__, channel->idx);
+ /* if JPEG, set the quality */
+ if ((mode->color & MASK_COLOR) == COLOR_JPG) {
+ mode->color &= ~MASK_COLOR;
+ mode->color |= COLOR_JPG;
+ mode->color &= ~MASK_JPG_QUALITY;
+ mode->color |= (channel->jc.quality << 8);
+ }
+ /* save the mode */
+ channel->mode = *mode;
+ channel->req_image_size = get_transfer_size(mode);
+ dprintk(1, "%s: reqsize %ld\n", __func__, channel->req_image_size);
+ 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] = (__le32) cpu_to_le32(chn_rev);
+ buffer[2] = CMD_SET_MODE;
+ memcpy(&buffer[3], &channel->mode, sizeof(struct s2255_mode));
+ channel->setmode_ready = 0;
+ res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
+ if (debug)
+ s2255_print_cfg(dev, mode);
+ kfree(buffer);
+ /* wait at least 3 frames before continuing */
+ if (mode->restart) {
+ wait_event_timeout(channel->wait_setmode,
+ (channel->setmode_ready != 0),
+ msecs_to_jiffies(S2255_SETMODE_TIMEOUT));
+ if (channel->setmode_ready != 1) {
+ printk(KERN_DEBUG "s2255: no set mode response\n");
+ res = -EFAULT;
+ }
+ }
+ /* clear the restart flag */
+ channel->mode.restart = 0;
+ dprintk(1, "%s chn %d, result: %d\n", __func__, channel->idx, res);
+ return res;
+}
+
+static int s2255_cmd_status(struct s2255_channel *channel, u32 *pstatus)
+{
+ int res;
+ __le32 *buffer;
+ u32 chn_rev;
+ struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
+ chn_rev = G_chnmap[channel->idx];
+ dprintk(4, "%s chan %d\n", __func__, channel->idx);
+ buffer = kzalloc(512, GFP_KERNEL);
+ if (buffer == NULL) {
+ dev_err(&dev->udev->dev, "out of mem\n");
+ return -ENOMEM;
+ }
+ /* form the get vid status command */
+ buffer[0] = IN_DATA_TOKEN;
+ buffer[1] = (__le32) cpu_to_le32(chn_rev);
+ buffer[2] = CMD_STATUS;
+ *pstatus = 0;
+ channel->vidstatus_ready = 0;
+ res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
+ kfree(buffer);
+ wait_event_timeout(channel->wait_vidstatus,
+ (channel->vidstatus_ready != 0),
+ msecs_to_jiffies(S2255_VIDSTATUS_TIMEOUT));
+ if (channel->vidstatus_ready != 1) {
+ printk(KERN_DEBUG "s2255: no vidstatus response\n");
+ res = -EFAULT;
+ }
+ *pstatus = channel->vidstatus;
+ dprintk(4, "%s, vid status %d\n", __func__, *pstatus);
+ 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_channel *channel = fh->channel;
+ 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(fh)) {
+ s2255_dev_err(&dev->udev->dev, "stream busy\n");
+ return -EBUSY;
+ }
+ channel->last_frame = -1;
+ channel->bad_payload = 0;
+ channel->cur_frame = 0;
+ channel->frame_count = 0;
+ for (j = 0; j < SYS_FRAMES; j++) {
+ channel->buffer.frame[j].ulState = S2255_READ_IDLE;
+ channel->buffer.frame[j].cur_size = 0;
+ }
+ res = videobuf_streamon(&fh->vb_vidq);
+ if (res == 0) {
+ s2255_start_acquire(channel);
+ channel->b_acquire = 1;
+ } else
+ res_free(fh);
+
+ return res;
+}
+
+static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+ struct s2255_fh *fh = priv;
+ dprintk(4, "%s\n, channel: %d", __func__, fh->channel->idx);
+ 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(fh->channel);
+ videobuf_streamoff(&fh->vb_vidq);
+ res_free(fh);
+ return 0;
+}
+
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_mode mode;
+ struct videobuf_queue *q = &fh->vb_vidq;
+ int ret = 0;
+ mutex_lock(&q->vb_lock);
+ if (videobuf_queue_is_busy(q)) {
+ dprintk(1, "queue busy\n");
+ ret = -EBUSY;
+ goto out_s_std;
+ }
+ if (res_locked(fh)) {
+ dprintk(1, "can't change standard after started\n");
+ ret = -EBUSY;
+ goto out_s_std;
+ }
+ mode = fh->channel->mode;
+ if (*i & V4L2_STD_NTSC) {
+ dprintk(4, "%s NTSC\n", __func__);
+ /* if changing format, reset frame decimation/intervals */
+ if (mode.format != FORMAT_NTSC) {
+ mode.restart = 1;
+ mode.format = FORMAT_NTSC;
+ mode.fdec = FDEC_1;
+ }
+ } else if (*i & V4L2_STD_PAL) {
+ dprintk(4, "%s PAL\n", __func__);
+ if (mode.format != FORMAT_PAL) {
+ mode.restart = 1;
+ mode.format = FORMAT_PAL;
+ mode.fdec = FDEC_1;
+ }
+ } else {
+ ret = -EINVAL;
+ }
+ if (mode.restart)
+ s2255_set_mode(fh->channel, &mode);
+out_s_std:
+ mutex_unlock(&q->vb_lock);
+ return ret;
+}
+
+/* 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)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_dev *dev = fh->dev;
+ struct s2255_channel *channel = fh->channel;
+ u32 status = 0;
+ if (inp->index != 0)
+ return -EINVAL;
+ inp->type = V4L2_INPUT_TYPE_CAMERA;
+ inp->std = S2255_NORMS;
+ inp->status = 0;
+ if (dev->dsp_fw_ver >= S2255_MIN_DSP_STATUS) {
+ int rc;
+ rc = s2255_cmd_status(fh->channel, &status);
+ dprintk(4, "s2255_cmd_status rc: %d status %x\n", rc, status);
+ if (rc == 0)
+ inp->status = (status & 0x01) ? 0
+ : V4L2_IN_ST_NO_SIGNAL;
+ }
+ switch (dev->pid) {
+ case 0x2255:
+ default:
+ strlcpy(inp->name, "Composite", sizeof(inp->name));
+ break;
+ case 0x2257:
+ strlcpy(inp->name, (channel->idx < 2) ? "Composite" : "S-Video",
+ sizeof(inp->name));
+ break;
+ }
+ 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)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_channel *channel = fh->channel;
+ struct s2255_dev *dev = fh->dev;
+ switch (qc->id) {
+ case V4L2_CID_BRIGHTNESS:
+ v4l2_ctrl_query_fill(qc, -127, 127, 1, DEF_BRIGHT);
+ break;
+ case V4L2_CID_CONTRAST:
+ v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_CONTRAST);
+ break;
+ case V4L2_CID_SATURATION:
+ v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_SATURATION);
+ break;
+ case V4L2_CID_HUE:
+ v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_HUE);
+ break;
+ case V4L2_CID_PRIVATE_COLORFILTER:
+ if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
+ return -EINVAL;
+ if ((dev->pid == 0x2257) && (channel->idx > 1))
+ return -EINVAL;
+ strlcpy(qc->name, "Color Filter", sizeof(qc->name));
+ qc->type = V4L2_CTRL_TYPE_MENU;
+ qc->minimum = 0;
+ qc->maximum = 1;
+ qc->step = 1;
+ qc->default_value = 1;
+ qc->flags = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ dprintk(4, "%s, id %d\n", __func__, qc->id);
+ return 0;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_dev *dev = fh->dev;
+ struct s2255_channel *channel = fh->channel;
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ctrl->value = channel->mode.bright;
+ break;
+ case V4L2_CID_CONTRAST:
+ ctrl->value = channel->mode.contrast;
+ break;
+ case V4L2_CID_SATURATION:
+ ctrl->value = channel->mode.saturation;
+ break;
+ case V4L2_CID_HUE:
+ ctrl->value = channel->mode.hue;
+ break;
+ case V4L2_CID_PRIVATE_COLORFILTER:
+ if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
+ return -EINVAL;
+ if ((dev->pid == 0x2257) && (channel->idx > 1))
+ return -EINVAL;
+ ctrl->value = !((channel->mode.color & MASK_INPUT_TYPE) >> 16);
+ break;
+ default:
+ return -EINVAL;
+ }
+ dprintk(4, "%s, id %d val %d\n", __func__, ctrl->id, ctrl->value);
+ return 0;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_channel *channel = fh->channel;
+ struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
+ struct s2255_mode mode;
+ mode = channel->mode;
+ dprintk(4, "%s\n", __func__);
+ /* update the mode to the corresponding value */
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ mode.bright = ctrl->value;
+ break;
+ case V4L2_CID_CONTRAST:
+ mode.contrast = ctrl->value;
+ break;
+ case V4L2_CID_HUE:
+ mode.hue = ctrl->value;
+ break;
+ case V4L2_CID_SATURATION:
+ mode.saturation = ctrl->value;
+ break;
+ case V4L2_CID_PRIVATE_COLORFILTER:
+ if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
+ return -EINVAL;
+ if ((dev->pid == 0x2257) && (channel->idx > 1))
+ return -EINVAL;
+ mode.color &= ~MASK_INPUT_TYPE;
+ mode.color |= ((ctrl->value ? 0 : 1) << 16);
+ break;
+ default:
+ return -EINVAL;
+ }
+ 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(fh->channel, &mode);
+ return 0;
+}
+
+static int vidioc_g_jpegcomp(struct file *file, void *priv,
+ struct v4l2_jpegcompression *jc)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_channel *channel = fh->channel;
+ *jc = channel->jc;
+ dprintk(2, "%s: quality %d\n", __func__, jc->quality);
+ return 0;
+}
+
+static int vidioc_s_jpegcomp(struct file *file, void *priv,
+ const struct v4l2_jpegcompression *jc)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_channel *channel = fh->channel;
+ if (jc->quality < 0 || jc->quality > 100)
+ return -EINVAL;
+ channel->jc.quality = jc->quality;
+ dprintk(2, "%s: quality %d\n", __func__, jc->quality);
+ return 0;
+}
+
+static int vidioc_g_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *sp)
+{
+ struct s2255_fh *fh = priv;
+ __u32 def_num, def_dem;
+ struct s2255_channel *channel = fh->channel;
+ if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ memset(sp, 0, sizeof(struct v4l2_streamparm));
+ sp->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+ sp->parm.capture.capturemode = channel->cap_parm.capturemode;
+ def_num = (channel->mode.format == FORMAT_NTSC) ? 1001 : 1000;
+ def_dem = (channel->mode.format == FORMAT_NTSC) ? 30000 : 25000;
+ sp->parm.capture.timeperframe.denominator = def_dem;
+ switch (channel->mode.fdec) {
+ default:
+ case FDEC_1:
+ sp->parm.capture.timeperframe.numerator = def_num;
+ break;
+ case FDEC_2:
+ sp->parm.capture.timeperframe.numerator = def_num * 2;
+ break;
+ case FDEC_3:
+ sp->parm.capture.timeperframe.numerator = def_num * 3;
+ break;
+ case FDEC_5:
+ sp->parm.capture.timeperframe.numerator = def_num * 5;
+ break;
+ }
+ dprintk(4, "%s capture mode, %d timeperframe %d/%d\n", __func__,
+ sp->parm.capture.capturemode,
+ sp->parm.capture.timeperframe.numerator,
+ sp->parm.capture.timeperframe.denominator);
+ return 0;
+}
+
+static int vidioc_s_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *sp)
+{
+ struct s2255_fh *fh = priv;
+ struct s2255_channel *channel = fh->channel;
+ struct s2255_mode mode;
+ int fdec = FDEC_1;
+ __u32 def_num, def_dem;
+ if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ mode = channel->mode;
+ /* high quality capture mode requires a stream restart */
+ if (channel->cap_parm.capturemode
+ != sp->parm.capture.capturemode && res_locked(fh))
+ return -EBUSY;
+ def_num = (mode.format == FORMAT_NTSC) ? 1001 : 1000;
+ def_dem = (mode.format == FORMAT_NTSC) ? 30000 : 25000;
+ if (def_dem != sp->parm.capture.timeperframe.denominator)
+ sp->parm.capture.timeperframe.numerator = def_num;
+ else if (sp->parm.capture.timeperframe.numerator <= def_num)
+ sp->parm.capture.timeperframe.numerator = def_num;
+ else if (sp->parm.capture.timeperframe.numerator <= (def_num * 2)) {
+ sp->parm.capture.timeperframe.numerator = def_num * 2;
+ fdec = FDEC_2;
+ } else if (sp->parm.capture.timeperframe.numerator <= (def_num * 3)) {
+ sp->parm.capture.timeperframe.numerator = def_num * 3;
+ fdec = FDEC_3;
+ } else {
+ sp->parm.capture.timeperframe.numerator = def_num * 5;
+ fdec = FDEC_5;
+ }
+ mode.fdec = fdec;
+ sp->parm.capture.timeperframe.denominator = def_dem;
+ s2255_set_mode(channel, &mode);
+ dprintk(4, "%s capture mode, %d timeperframe %d/%d, fdec %d\n",
+ __func__,
+ sp->parm.capture.capturemode,
+ sp->parm.capture.timeperframe.numerator,
+ sp->parm.capture.timeperframe.denominator, fdec);
+ return 0;
+}
+
+static int vidioc_enum_frameintervals(struct file *file, void *priv,
+ struct v4l2_frmivalenum *fe)
+{
+ int is_ntsc = 0;
+#define NUM_FRAME_ENUMS 4
+ int frm_dec[NUM_FRAME_ENUMS] = {1, 2, 3, 5};
+ if (fe->index < 0 || fe->index >= NUM_FRAME_ENUMS)
+ return -EINVAL;
+ switch (fe->width) {
+ case 640:
+ if (fe->height != 240 && fe->height != 480)
+ return -EINVAL;
+ is_ntsc = 1;
+ break;
+ case 320:
+ if (fe->height != 240)
+ return -EINVAL;
+ is_ntsc = 1;
+ break;
+ case 704:
+ if (fe->height != 288 && fe->height != 576)
+ return -EINVAL;
+ break;
+ case 352:
+ if (fe->height != 288)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ fe->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+ fe->discrete.denominator = is_ntsc ? 30000 : 25000;
+ fe->discrete.numerator = (is_ntsc ? 1001 : 1000) * frm_dec[fe->index];
+ dprintk(4, "%s discrete %d/%d\n", __func__, fe->discrete.numerator,
+ fe->discrete.denominator);
+ return 0;
+}
+
+static int __s2255_open(struct file *file)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct s2255_channel *channel = video_drvdata(file);
+ struct s2255_dev *dev = to_s2255_dev(vdev->v4l2_dev);
+ struct s2255_fh *fh;
+ enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ int state;
+ dprintk(1, "s2255: open called (dev=%s)\n",
+ video_device_node_name(vdev));
+ state = atomic_read(&dev->fw_data->fw_state);
+ switch (state) {
+ case S2255_FW_DISCONNECTING:
+ return -ENODEV;
+ case S2255_FW_FAILED:
+ s2255_dev_err(&dev->udev->dev,
+ "firmware load failed. retrying.\n");
+ s2255_fwload_start(dev, 1);
+ wait_event_timeout(dev->fw_data->wait_fw,
+ ((atomic_read(&dev->fw_data->fw_state)
+ == S2255_FW_SUCCESS) ||
+ (atomic_read(&dev->fw_data->fw_state)
+ == S2255_FW_DISCONNECTING)),
+ msecs_to_jiffies(S2255_LOAD_TIMEOUT));
+ /* state may have changed, re-read */
+ state = atomic_read(&dev->fw_data->fw_state);
+ break;
+ case S2255_FW_NOTLOADED:
+ case S2255_FW_LOADED_DSPWAIT:
+ /* give S2255_LOAD_TIMEOUT time for firmware to load in case
+ driver loaded and then device immediately opened */
+ printk(KERN_INFO "%s waiting for firmware load\n", __func__);
+ wait_event_timeout(dev->fw_data->wait_fw,
+ ((atomic_read(&dev->fw_data->fw_state)
+ == S2255_FW_SUCCESS) ||
+ (atomic_read(&dev->fw_data->fw_state)
+ == S2255_FW_DISCONNECTING)),
+ msecs_to_jiffies(S2255_LOAD_TIMEOUT));
+ /* state may have changed, re-read */
+ state = atomic_read(&dev->fw_data->fw_state);
+ break;
+ case S2255_FW_SUCCESS:
+ default:
+ break;
+ }
+ /* state may have changed in above switch statement */
+ switch (state) {
+ case S2255_FW_SUCCESS:
+ break;
+ case S2255_FW_FAILED:
+ printk(KERN_INFO "2255 firmware load failed.\n");
+ return -ENODEV;
+ case S2255_FW_DISCONNECTING:
+ printk(KERN_INFO "%s: disconnecting\n", __func__);
+ return -ENODEV;
+ case S2255_FW_LOADED_DSPWAIT:
+ case S2255_FW_NOTLOADED:
+ printk(KERN_INFO "%s: firmware not loaded yet"
+ "please try again later\n",
+ __func__);
+ /*
+ * Timeout on firmware load means device unusable.
+ * Set firmware failure state.
+ * On next s2255_open the firmware will be reloaded.
+ */
+ atomic_set(&dev->fw_data->fw_state,
+ S2255_FW_FAILED);
+ return -EAGAIN;
+ default:
+ printk(KERN_INFO "%s: unknown state\n", __func__);
+ return -EFAULT;
+ }
+ /* allocate + initialize per filehandle data */
+ fh = kzalloc(sizeof(*fh), GFP_KERNEL);
+ if (NULL == fh)
+ return -ENOMEM;
+ file->private_data = fh;
+ fh->dev = dev;
+ fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ fh->channel = channel;
+ if (!channel->configured) {
+ /* configure channel to default state */
+ channel->fmt = &formats[0];
+ s2255_set_mode(channel, &channel->mode);
+ channel->configured = 1;
+ }
+ dprintk(1, "%s: dev=%s type=%s\n", __func__,
+ video_device_node_name(vdev), v4l2_type_names[type]);
+ dprintk(2, "%s: fh=0x%08lx, dev=0x%08lx, vidq=0x%08lx\n", __func__,
+ (unsigned long)fh, (unsigned long)dev,
+ (unsigned long)&channel->vidq);
+ dprintk(4, "%s: list_empty active=%d\n", __func__,
+ list_empty(&channel->vidq.active));
+ videobuf_queue_vmalloc_init(&fh->vb_vidq, &s2255_video_qops,
+ NULL, &dev->slock,
+ fh->type,
+ V4L2_FIELD_INTERLACED,
+ sizeof(struct s2255_buffer),
+ fh, vdev->lock);
+ return 0;
+}
+
+static int s2255_open(struct file *file)
+{
+ struct video_device *vdev = video_devdata(file);
+ int ret;
+
+ if (mutex_lock_interruptible(vdev->lock))
+ return -ERESTARTSYS;
+ ret = __s2255_open(file);
+ mutex_unlock(vdev->lock);
+ return ret;
+}
+
+static unsigned int s2255_poll(struct file *file,
+ struct poll_table_struct *wait)
+{
+ struct s2255_fh *fh = file->private_data;
+ struct s2255_dev *dev = fh->dev;
+ int rc;
+ dprintk(100, "%s\n", __func__);
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
+ return POLLERR;
+ mutex_lock(&dev->lock);
+ rc = videobuf_poll_stream(file, &fh->vb_vidq, wait);
+ mutex_unlock(&dev->lock);
+ return rc;
+}
+
+static void s2255_destroy(struct s2255_dev *dev)
+{
+ /* board shutdown stops the read pipe if it is running */
+ s2255_board_shutdown(dev);
+ /* make sure firmware still not trying to load */
+ del_timer(&dev->timer); /* only started in .probe and .open */
+ if (dev->fw_data->fw_urb) {
+ usb_kill_urb(dev->fw_data->fw_urb);
+ usb_free_urb(dev->fw_data->fw_urb);
+ dev->fw_data->fw_urb = NULL;
+ }
+ release_firmware(dev->fw_data->fw);
+ kfree(dev->fw_data->pfw_data);
+ kfree(dev->fw_data);
+ /* reset the DSP so firmware can be reloaded next time */
+ s2255_reset_dsppower(dev);
+ mutex_destroy(&dev->lock);
+ usb_put_dev(dev->udev);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ dprintk(1, "%s", __func__);
+ kfree(dev);
+}
+
+static int s2255_release(struct file *file)
+{
+ struct s2255_fh *fh = file->private_data;
+ struct s2255_dev *dev = fh->dev;
+ struct video_device *vdev = video_devdata(file);
+ struct s2255_channel *channel = fh->channel;
+ if (!dev)
+ return -ENODEV;
+ mutex_lock(&dev->lock);
+ /* turn off stream */
+ if (res_check(fh)) {
+ if (channel->b_acquire)
+ s2255_stop_acquire(fh->channel);
+ videobuf_streamoff(&fh->vb_vidq);
+ res_free(fh);
+ }
+ videobuf_mmap_free(&fh->vb_vidq);
+ mutex_unlock(&dev->lock);
+ dprintk(1, "%s (dev=%s)\n", __func__, video_device_node_name(vdev));
+ kfree(fh);
+ return 0;
+}
+
+static int s2255_mmap_v4l(struct file *file, struct vm_area_struct *vma)
+{
+ struct s2255_fh *fh = file->private_data;
+ struct s2255_dev *dev;
+ int ret;
+
+ if (!fh)
+ return -ENODEV;
+ dev = fh->dev;
+ dprintk(4, "%s, vma=0x%08lx\n", __func__, (unsigned long)vma);
+ if (mutex_lock_interruptible(&dev->lock))
+ return -ERESTARTSYS;
+ ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
+ mutex_unlock(&dev->lock);
+ dprintk(4, "%s vma start=0x%08lx, size=%ld, ret=%d\n", __func__,
+ (unsigned long)vma->vm_start,
+ (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret);
+ return ret;
+}
+
+static const struct v4l2_file_operations s2255_fops_v4l = {
+ .owner = THIS_MODULE,
+ .open = s2255_open,
+ .release = s2255_release,
+ .poll = s2255_poll,
+ .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
+ .mmap = s2255_mmap_v4l,
+};
+
+static const struct v4l2_ioctl_ops s2255_ioctl_ops = {
+ .vidioc_querymenu = vidioc_querymenu,
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_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,
+ .vidioc_s_jpegcomp = vidioc_s_jpegcomp,
+ .vidioc_g_jpegcomp = vidioc_g_jpegcomp,
+ .vidioc_s_parm = vidioc_s_parm,
+ .vidioc_g_parm = vidioc_g_parm,
+ .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
+};
+
+static void s2255_video_device_release(struct video_device *vdev)
+{
+ struct s2255_dev *dev = to_s2255_dev(vdev->v4l2_dev);
+ dprintk(4, "%s, chnls: %d \n", __func__,
+ atomic_read(&dev->num_channels));
+ if (atomic_dec_and_test(&dev->num_channels))
+ s2255_destroy(dev);
+ return;
+}
+
+static struct video_device template = {
+ .name = "s2255v",
+ .fops = &s2255_fops_v4l,
+ .ioctl_ops = &s2255_ioctl_ops,
+ .release = s2255_video_device_release,
+ .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;
+ struct s2255_channel *channel;
+ ret = v4l2_device_register(&dev->interface->dev, &dev->v4l2_dev);
+ if (ret)
+ return ret;
+ /* initialize all video 4 linux */
+ /* register 4 video devices */
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ channel = &dev->channel[i];
+ INIT_LIST_HEAD(&channel->vidq.active);
+ channel->vidq.dev = dev;
+ /* register 4 video devices */
+ channel->vdev = template;
+ channel->vdev.lock = &dev->lock;
+ channel->vdev.v4l2_dev = &dev->v4l2_dev;
+ video_set_drvdata(&channel->vdev, channel);
+ if (video_nr == -1)
+ ret = video_register_device(&channel->vdev,
+ VFL_TYPE_GRABBER,
+ video_nr);
+ else
+ ret = video_register_device(&channel->vdev,
+ VFL_TYPE_GRABBER,
+ cur_nr + i);
+
+ if (ret) {
+ dev_err(&dev->udev->dev,
+ "failed to register video device!\n");
+ break;
+ }
+ atomic_inc(&dev->num_channels);
+ v4l2_info(&dev->v4l2_dev, "V4L2 device registered as %s\n",
+ video_device_node_name(&channel->vdev));
+
+ }
+ printk(KERN_INFO "Sensoray 2255 V4L driver Revision: %s\n",
+ S2255_VERSION);
+ /* if no channels registered, return error and probe will fail*/
+ if (atomic_read(&dev->num_channels) == 0) {
+ v4l2_device_unregister(&dev->v4l2_dev);
+ return ret;
+ }
+ if (atomic_read(&dev->num_channels) != MAX_CHANNELS)
+ printk(KERN_WARNING "s2255: Not all channels available.\n");
+ return 0;
+}
+
+/* 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 (S2255_MARKER_FRAME)
+ * 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)
+{
+ char *pdest;
+ u32 offset = 0;
+ int bframe = 0;
+ char *psrc;
+ unsigned long copy_size;
+ unsigned long size;
+ s32 idx = -1;
+ struct s2255_framei *frm;
+ unsigned char *pdata;
+ struct s2255_channel *channel;
+ dprintk(100, "buffer to user\n");
+ channel = &dev->channel[dev->cc];
+ idx = channel->cur_frame;
+ frm = &channel->buffer.frame[idx];
+ if (frm->ulState == S2255_READ_IDLE) {
+ int jj;
+ unsigned int cc;
+ __le32 *pdword; /*data from dsp is little endian */
+ int payload;
+ /* search for marker codes */
+ pdata = (unsigned char *)pipe_info->transfer_buffer;
+ pdword = (__le32 *)pdata;
+ for (jj = 0; jj < (pipe_info->cur_transfer_size - 12); jj++) {
+ switch (*pdword) {
+ case S2255_MARKER_FRAME:
+ dprintk(4, "found frame marker at offset:"
+ " %d [%x %x]\n", jj, pdata[0],
+ pdata[1]);
+ offset = jj + PREFIX_SIZE;
+ bframe = 1;
+ cc = le32_to_cpu(pdword[1]);
+ if (cc >= MAX_CHANNELS) {
+ printk(KERN_ERR
+ "bad channel\n");
+ return -EINVAL;
+ }
+ /* reverse it */
+ dev->cc = G_chnmap[cc];
+ channel = &dev->channel[dev->cc];
+ payload = le32_to_cpu(pdword[3]);
+ if (payload > channel->req_image_size) {
+ channel->bad_payload++;
+ /* discard the bad frame */
+ return -EINVAL;
+ }
+ channel->pkt_size = payload;
+ channel->jpg_size = le32_to_cpu(pdword[4]);
+ break;
+ case S2255_MARKER_RESPONSE:
+
+ pdata += DEF_USB_BLOCK;
+ jj += DEF_USB_BLOCK;
+ if (le32_to_cpu(pdword[1]) >= MAX_CHANNELS)
+ break;
+ cc = G_chnmap[le32_to_cpu(pdword[1])];
+ if (cc >= MAX_CHANNELS)
+ break;
+ channel = &dev->channel[cc];
+ switch (pdword[2]) {
+ case S2255_RESPONSE_SETMODE:
+ /* check if channel valid */
+ /* set mode ready */
+ channel->setmode_ready = 1;
+ wake_up(&channel->wait_setmode);
+ dprintk(5, "setmode ready %d\n", cc);
+ break;
+ case S2255_RESPONSE_FW:
+ dev->chn_ready |= (1 << cc);
+ if ((dev->chn_ready & 0x0f) != 0x0f)
+ break;
+ /* all channels ready */
+ printk(KERN_INFO "s2255: fw loaded\n");
+ atomic_set(&dev->fw_data->fw_state,
+ S2255_FW_SUCCESS);
+ wake_up(&dev->fw_data->wait_fw);
+ break;
+ case S2255_RESPONSE_STATUS:
+ channel->vidstatus = le32_to_cpu(pdword[3]);
+ channel->vidstatus_ready = 1;
+ wake_up(&channel->wait_vidstatus);
+ dprintk(5, "got vidstatus %x chan %d\n",
+ le32_to_cpu(pdword[3]), cc);
+ break;
+ default:
+ printk(KERN_INFO "s2255 unknown resp\n");
+ }
+ default:
+ pdata++;
+ break;
+ }
+ if (bframe)
+ break;
+ } /* for */
+ if (!bframe)
+ return -EINVAL;
+ }
+ channel = &dev->channel[dev->cc];
+ idx = channel->cur_frame;
+ frm = &channel->buffer.frame[idx];
+ /* search done. now find out if should be acquiring on this channel */
+ if (!channel->b_acquire) {
+ /* we found a frame, but this channel is turned off */
+ frm->ulState = S2255_READ_IDLE;
+ return -EINVAL;
+ }
+
+ if (frm->ulState == S2255_READ_IDLE) {
+ frm->ulState = S2255_READ_FRAME;
+ frm->cur_size = 0;
+ }
+
+ /* skip the marker 512 bytes (and offset if out of sync) */
+ psrc = (u8 *)pipe_info->transfer_buffer + offset;
+
+
+ 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;
+
+ copy_size = (pipe_info->cur_transfer_size - offset);
+
+ size = channel->pkt_size - PREFIX_SIZE;
+
+ /* sanity check on pdest */
+ if ((copy_size + frm->cur_size) < channel->req_image_size)
+ memcpy(pdest, psrc, copy_size);
+
+ frm->cur_size += copy_size;
+ dprintk(4, "cur_size size %lu size %lu \n", frm->cur_size, size);
+
+ if (frm->cur_size >= size) {
+ dprintk(2, "****************[%d]Buffer[%d]full*************\n",
+ dev->cc, idx);
+ channel->last_frame = channel->cur_frame;
+ channel->cur_frame++;
+ /* end of system frame ring buffer, start at zero */
+ if ((channel->cur_frame == SYS_FRAMES) ||
+ (channel->cur_frame == channel->buffer.dwFrames))
+ channel->cur_frame = 0;
+ /* frame ready */
+ if (channel->b_acquire)
+ s2255_got_frame(channel, channel->jpg_size);
+ channel->frame_count++;
+ frm->ulState = S2255_READ_IDLE;
+ frm->cur_size = 0;
+
+ }
+ /* 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 != 0)
+ dprintk(4, "s2255: read callback failed\n");
+
+ 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, S2255_VR_FW, 0, 0, transBuffer, 2,
+ S2255_VR_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_channel *channel)
+{
+ unsigned long i;
+ unsigned long reqsize;
+ dprintk(1, "create sys buffers\n");
+ channel->buffer.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 */
+ channel->buffer.frame[i].lpvbits = vmalloc(reqsize);
+ dprintk(1, "valloc %p chan %d, idx %lu, pdata %p\n",
+ &channel->buffer.frame[i], channel->idx, i,
+ channel->buffer.frame[i].lpvbits);
+ channel->buffer.frame[i].size = reqsize;
+ if (channel->buffer.frame[i].lpvbits == NULL) {
+ printk(KERN_INFO "out of memory. using less frames\n");
+ channel->buffer.dwFrames = i;
+ break;
+ }
+ }
+
+ /* make sure internal states are set */
+ for (i = 0; i < SYS_FRAMES; i++) {
+ channel->buffer.frame[i].ulState = 0;
+ channel->buffer.frame[i].cur_size = 0;
+ }
+
+ channel->cur_frame = 0;
+ channel->last_frame = -1;
+ return 0;
+}
+
+static int s2255_release_sys_buffers(struct s2255_channel *channel)
+{
+ unsigned long i;
+ dprintk(1, "release sys buffers\n");
+ for (i = 0; i < SYS_FRAMES; i++) {
+ if (channel->buffer.frame[i].lpvbits) {
+ dprintk(1, "vfree %p\n",
+ channel->buffer.frame[i].lpvbits);
+ vfree(channel->buffer.frame[i].lpvbits);
+ }
+ channel->buffer.frame[i].lpvbits = NULL;
+ }
+ return 0;
+}
+
+static int s2255_board_init(struct s2255_dev *dev)
+{
+ struct s2255_mode mode_def = DEF_MODEI_NTSC_CONT;
+ int fw_ver;
+ int j;
+ struct s2255_pipeinfo *pipe = &dev->pipe;
+ dprintk(4, "board init: %p", dev);
+ memset(pipe, 0, sizeof(*pipe));
+ pipe->dev = dev;
+ pipe->cur_transfer_size = S2255_USB_XFER_SIZE;
+ pipe->max_transfer_size = S2255_USB_XFER_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 "s2255: usb firmware version %d.%d\n",
+ (fw_ver >> 8) & 0xff,
+ fw_ver & 0xff);
+
+ if (fw_ver < S2255_CUR_USB_FWVER)
+ printk(KERN_INFO "s2255: newer USB firmware available\n");
+
+ for (j = 0; j < MAX_CHANNELS; j++) {
+ struct s2255_channel *channel = &dev->channel[j];
+ channel->b_acquire = 0;
+ channel->mode = mode_def;
+ if (dev->pid == 0x2257 && j > 1)
+ channel->mode.color |= (1 << 16);
+ channel->jc.quality = S2255_DEF_JPEG_QUAL;
+ channel->width = LINE_SZ_4CIFS_NTSC;
+ channel->height = NUM_LINES_4CIFS_NTSC * 2;
+ channel->fmt = &formats[0];
+ channel->mode.restart = 1;
+ channel->req_image_size = get_transfer_size(&mode_def);
+ channel->frame_count = 0;
+ /* create the system buffers */
+ s2255_create_sys_buffers(channel);
+ }
+ /* start read pipe */
+ s2255_start_readpipe(dev);
+ dprintk(1, "%s: success\n", __func__);
+ return 0;
+}
+
+static int s2255_board_shutdown(struct s2255_dev *dev)
+{
+ u32 i;
+ dprintk(1, "%s: dev: %p", __func__, dev);
+
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ if (dev->channel[i].b_acquire)
+ s2255_stop_acquire(&dev->channel[i]);
+ }
+ s2255_stop_readpipe(dev);
+ for (i = 0; i < MAX_CHANNELS; i++)
+ s2255_release_sys_buffers(&dev->channel[i]);
+ /* release transfer buffer */
+ kfree(dev->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, "%s: urb:%p, status %d\n", __func__, purb,
+ purb->status);
+ if (pipe_info == NULL) {
+ dev_err(&purb->dev->dev, "no context!\n");
+ return;
+ }
+
+ dev = pipe_info->dev;
+ if (dev == NULL) {
+ dev_err(&purb->dev->dev, "no context!\n");
+ return;
+ }
+ status = purb->status;
+ /* if shutting down, do not resubmit, exit immediately */
+ if (status == -ESHUTDOWN) {
+ dprintk(2, "%s: err shutdown\n", __func__);
+ pipe_info->err_count++;
+ return;
+ }
+
+ if (pipe_info->state == 0) {
+ dprintk(2, "%s: exiting USB pipe", __func__);
+ return;
+ }
+
+ if (status == 0)
+ s2255_read_video_callback(dev, pipe_info);
+ else {
+ pipe_info->err_count++;
+ dprintk(1, "%s: failed URB %d\n", __func__, status);
+ }
+
+ 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_ATOMIC)) {
+ dev_err(&dev->udev->dev, "error submitting urb\n");
+ }
+ } else {
+ dprintk(2, "%s :complete state 0\n", __func__);
+ }
+ return;
+}
+
+static int s2255_start_readpipe(struct s2255_dev *dev)
+{
+ int pipe;
+ int retval;
+ struct s2255_pipeinfo *pipe_info = &dev->pipe;
+ pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
+ dprintk(2, "%s: IN %d\n", __func__, dev->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) {
+ dev_err(&dev->udev->dev,
+ "ReadStream: Unable to alloc URB\n");
+ 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);
+ 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_channel *channel)
+{
+ unsigned char *buffer;
+ int res;
+ unsigned long chn_rev;
+ int j;
+ struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
+ chn_rev = G_chnmap[channel->idx];
+ buffer = kzalloc(512, GFP_KERNEL);
+ if (buffer == NULL) {
+ dev_err(&dev->udev->dev, "out of mem\n");
+ return -ENOMEM;
+ }
+
+ channel->last_frame = -1;
+ channel->bad_payload = 0;
+ channel->cur_frame = 0;
+ for (j = 0; j < SYS_FRAMES; j++) {
+ channel->buffer.frame[j].ulState = 0;
+ channel->buffer.frame[j].cur_size = 0;
+ }
+
+ /* send the start command */
+ *(__le32 *) buffer = IN_DATA_TOKEN;
+ *((__le32 *) buffer + 1) = (__le32) cpu_to_le32(chn_rev);
+ *((__le32 *) buffer + 2) = 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[%d] %d \n", channel->idx, res);
+ kfree(buffer);
+ return 0;
+}
+
+static int s2255_stop_acquire(struct s2255_channel *channel)
+{
+ unsigned char *buffer;
+ int res;
+ unsigned long chn_rev;
+ struct s2255_dev *dev = to_s2255_dev(channel->vdev.v4l2_dev);
+ chn_rev = G_chnmap[channel->idx];
+ buffer = kzalloc(512, GFP_KERNEL);
+ if (buffer == NULL) {
+ dev_err(&dev->udev->dev, "out of mem\n");
+ return -ENOMEM;
+ }
+ /* send the stop command */
+ *(__le32 *) buffer = IN_DATA_TOKEN;
+ *((__le32 *) buffer + 1) = (__le32) cpu_to_le32(chn_rev);
+ *((__le32 *) 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");
+ kfree(buffer);
+ channel->b_acquire = 0;
+ dprintk(4, "%s: chn %d, res %d\n", __func__, channel->idx, res);
+ return res;
+}
+
+static void s2255_stop_readpipe(struct s2255_dev *dev)
+{
+ struct s2255_pipeinfo *pipe = &dev->pipe;
+
+ pipe->state = 0;
+ if (pipe->stream_urb) {
+ /* cancel urb */
+ usb_kill_urb(pipe->stream_urb);
+ usb_free_urb(pipe->stream_urb);
+ pipe->stream_urb = NULL;
+ }
+ dprintk(4, "%s", __func__);
+ return;
+}
+
+static void s2255_fwload_start(struct s2255_dev *dev, int reset)
+{
+ if (reset)
+ s2255_reset_dsppower(dev);
+ dev->fw_data->fw_size = dev->fw_data->fw->size;
+ atomic_set(&dev->fw_data->fw_state, S2255_FW_NOTLOADED);
+ 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);
+ mod_timer(&dev->timer, jiffies + HZ);
+}
+
+/* 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;
+ __le32 *pdata;
+ int fw_size;
+ dprintk(2, "%s\n", __func__);
+ /* allocate memory for our device state and initialize it to zero */
+ dev = kzalloc(sizeof(struct s2255_dev), GFP_KERNEL);
+ if (dev == NULL) {
+ s2255_dev_err(&interface->dev, "out of memory\n");
+ return -ENOMEM;
+ }
+ atomic_set(&dev->num_channels, 0);
+ dev->pid = id->idProduct;
+ dev->fw_data = kzalloc(sizeof(struct s2255_fw), GFP_KERNEL);
+ if (!dev->fw_data)
+ goto errorFWDATA1;
+ mutex_init(&dev->lock);
+ /* 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");
+ retval = -ENODEV;
+ goto errorUDEV;
+ }
+ dprintk(1, "dev: %p, udev %p interface %p\n", dev,
+ 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\n");
+ goto errorEP;
+ }
+ init_timer(&dev->timer);
+ dev->timer.function = s2255_timer;
+ dev->timer.data = (unsigned long)dev->fw_data;
+ init_waitqueue_head(&dev->fw_data->wait_fw);
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ struct s2255_channel *channel = &dev->channel[i];
+ dev->channel[i].idx = i;
+ init_waitqueue_head(&channel->wait_setmode);
+ init_waitqueue_head(&channel->wait_vidstatus);
+ }
+
+ 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 errorFWURB;
+ }
+
+ 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 errorFWDATA2;
+ }
+ /* 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 errorREQFW;
+ }
+ /* check the firmware is valid */
+ fw_size = dev->fw_data->fw->size;
+ pdata = (__le32 *) &dev->fw_data->fw->data[fw_size - 8];
+
+ if (*pdata != S2255_FW_MARKER) {
+ printk(KERN_INFO "Firmware invalid.\n");
+ retval = -ENODEV;
+ goto errorFWMARKER;
+ } else {
+ /* make sure firmware is the latest */
+ __le32 *pRel;
+ pRel = (__le32 *) &dev->fw_data->fw->data[fw_size - 4];
+ printk(KERN_INFO "s2255 dsp fw version %x\n", *pRel);
+ dev->dsp_fw_ver = le32_to_cpu(*pRel);
+ if (dev->dsp_fw_ver < S2255_CUR_DSP_FWVER)
+ printk(KERN_INFO "s2255: f2255usb.bin out of date.\n");
+ if (dev->pid == 0x2257 &&
+ dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
+ printk(KERN_WARNING "s2255: 2257 requires firmware %d"
+ " or above.\n", S2255_MIN_DSP_COLORFILTER);
+ }
+ usb_reset_device(dev->udev);
+ /* load 2255 board specific */
+ retval = s2255_board_init(dev);
+ if (retval)
+ goto errorBOARDINIT;
+ spin_lock_init(&dev->slock);
+ s2255_fwload_start(dev, 0);
+ /* loads v4l specific */
+ retval = s2255_probe_v4l(dev);
+ if (retval)
+ goto errorBOARDINIT;
+ dev_info(&interface->dev, "Sensoray 2255 detected\n");
+ return 0;
+errorBOARDINIT:
+ s2255_board_shutdown(dev);
+errorFWMARKER:
+ release_firmware(dev->fw_data->fw);
+errorREQFW:
+ kfree(dev->fw_data->pfw_data);
+errorFWDATA2:
+ usb_free_urb(dev->fw_data->fw_urb);
+errorFWURB:
+ del_timer(&dev->timer);
+errorEP:
+ usb_put_dev(dev->udev);
+errorUDEV:
+ kfree(dev->fw_data);
+ mutex_destroy(&dev->lock);
+errorFWDATA1:
+ kfree(dev);
+ printk(KERN_WARNING "Sensoray 2255 driver load failed: 0x%x\n", retval);
+ return retval;
+}
+
+/* disconnect routine. when board is removed physically or with rmmod */
+static void s2255_disconnect(struct usb_interface *interface)
+{
+ struct s2255_dev *dev = to_s2255_dev(usb_get_intfdata(interface));
+ int i;
+ int channels = atomic_read(&dev->num_channels);
+ mutex_lock(&dev->lock);
+ v4l2_device_disconnect(&dev->v4l2_dev);
+ mutex_unlock(&dev->lock);
+ /*see comments in the uvc_driver.c usb disconnect function */
+ atomic_inc(&dev->num_channels);
+ /* unregister each video device. */
+ for (i = 0; i < channels; i++)
+ video_unregister_device(&dev->channel[i].vdev);
+ /* wake up any of our timers */
+ atomic_set(&dev->fw_data->fw_state, S2255_FW_DISCONNECTING);
+ wake_up(&dev->fw_data->wait_fw);
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ dev->channel[i].setmode_ready = 1;
+ wake_up(&dev->channel[i].wait_setmode);
+ dev->channel[i].vidstatus_ready = 1;
+ wake_up(&dev->channel[i].wait_vidstatus);
+ }
+ if (atomic_dec_and_test(&dev->num_channels))
+ s2255_destroy(dev);
+ dev_info(&interface->dev, "%s\n", __func__);
+}
+
+static struct usb_driver s2255_driver = {
+ .name = S2255_DRIVER_NAME,
+ .probe = s2255_probe,
+ .disconnect = s2255_disconnect,
+ .id_table = s2255_table,
+};
+
+module_usb_driver(s2255_driver);
+
+MODULE_DESCRIPTION("Sensoray 2255 Video for Linux driver");
+MODULE_AUTHOR("Dean Anderson (Sensoray Company Inc.)");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(S2255_VERSION);
+MODULE_FIRMWARE(FIRMWARE_FILE_NAME);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-20 03:04:32 +0000