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-rw-r--r--drivers/media/usb/Kconfig3
-rw-r--r--drivers/media/usb/Makefile2
-rw-r--r--drivers/media/usb/s2255/Kconfig9
-rw-r--r--drivers/media/usb/s2255/Makefile2
-rw-r--r--drivers/media/usb/s2255/s2255drv.c2689
-rw-r--r--drivers/media/usb/stkwebcam/Kconfig13
-rw-r--r--drivers/media/usb/stkwebcam/Makefile4
-rw-r--r--drivers/media/usb/stkwebcam/stk-sensor.c595
-rw-r--r--drivers/media/usb/stkwebcam/stk-webcam.c1380
-rw-r--r--drivers/media/usb/stkwebcam/stk-webcam.h134
-rw-r--r--drivers/media/usb/zr364xx/Kconfig14
-rw-r--r--drivers/media/usb/zr364xx/Makefile2
-rw-r--r--drivers/media/usb/zr364xx/zr364xx.c1643
13 files changed, 6490 insertions, 0 deletions
diff --git a/drivers/media/usb/Kconfig b/drivers/media/usb/Kconfig
index a1e25ee9d67..069a3c1d03f 100644
--- a/drivers/media/usb/Kconfig
+++ b/drivers/media/usb/Kconfig
@@ -11,6 +11,9 @@ source "drivers/media/usb/uvc/Kconfig"
source "drivers/media/usb/gspca/Kconfig"
source "drivers/media/usb/pwc/Kconfig"
source "drivers/media/usb/cpia2/Kconfig"
+source "drivers/media/usb/zr364xx/Kconfig"
+source "drivers/media/usb/stkwebcam/Kconfig"
+source "drivers/media/usb/s2255/Kconfig"
source "drivers/media/usb/sn9c102/Kconfig"
endif
diff --git a/drivers/media/usb/Makefile b/drivers/media/usb/Makefile
index 428827a4d97..63e37bb2ed7 100644
--- a/drivers/media/usb/Makefile
+++ b/drivers/media/usb/Makefile
@@ -4,6 +4,8 @@
# DVB USB-only drivers
obj-y := ttusb-dec/ ttusb-budget/ dvb-usb/ dvb-usb-v2/ siano/ b2c2/
+obj-y := zr364xx/ stkwebcam/ s2255/
+
obj-$(CONFIG_USB_VIDEO_CLASS) += uvc/
obj-$(CONFIG_USB_GSPCA) += gspca/
obj-$(CONFIG_USB_PWC) += pwc/
diff --git a/drivers/media/usb/s2255/Kconfig b/drivers/media/usb/s2255/Kconfig
new file mode 100644
index 00000000000..7e8ee1f864a
--- /dev/null
+++ b/drivers/media/usb/s2255/Kconfig
@@ -0,0 +1,9 @@
+config USB_S2255
+ tristate "USB Sensoray 2255 video capture device"
+ depends on VIDEO_V4L2
+ select VIDEOBUF_VMALLOC
+ default n
+ help
+ Say Y here if you want support for the Sensoray 2255 USB device.
+ This driver can be compiled as a module, called s2255drv.
+
diff --git a/drivers/media/usb/s2255/Makefile b/drivers/media/usb/s2255/Makefile
new file mode 100644
index 00000000000..197d0bb2adf
--- /dev/null
+++ b/drivers/media/usb/s2255/Makefile
@@ -0,0 +1,2 @@
+obj-$(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..6c7960cc750
--- /dev/null
+++ b/drivers/media/usb/s2255/s2255drv.c
@@ -0,0 +1,2689 @@
+/*
+ * 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,
+ 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 = fh->dev;
+ int ret;
+
+ if (!fh)
+ return -ENODEV;
+ 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);
diff --git a/drivers/media/usb/stkwebcam/Kconfig b/drivers/media/usb/stkwebcam/Kconfig
new file mode 100644
index 00000000000..2fb0c2b687f
--- /dev/null
+++ b/drivers/media/usb/stkwebcam/Kconfig
@@ -0,0 +1,13 @@
+config USB_STKWEBCAM
+ tristate "USB Syntek DC1125 Camera support"
+ depends on VIDEO_V4L2 && EXPERIMENTAL
+ ---help---
+ Say Y here if you want to use this type of camera.
+ Supported devices are typically found in some Asus laptops,
+ with USB id 174f:a311 and 05e1:0501. Other Syntek cameras
+ may be supported by the stk11xx driver, from which this is
+ derived, see <http://sourceforge.net/projects/syntekdriver/>
+
+ To compile this driver as a module, choose M here: the
+ module will be called stkwebcam.
+
diff --git a/drivers/media/usb/stkwebcam/Makefile b/drivers/media/usb/stkwebcam/Makefile
new file mode 100644
index 00000000000..20ef8a4b990
--- /dev/null
+++ b/drivers/media/usb/stkwebcam/Makefile
@@ -0,0 +1,4 @@
+stkwebcam-objs := stk-webcam.o stk-sensor.o
+
+obj-$(CONFIG_USB_STKWEBCAM) += stkwebcam.o
+
diff --git a/drivers/media/usb/stkwebcam/stk-sensor.c b/drivers/media/usb/stkwebcam/stk-sensor.c
new file mode 100644
index 00000000000..e546b014d7a
--- /dev/null
+++ b/drivers/media/usb/stkwebcam/stk-sensor.c
@@ -0,0 +1,595 @@
+/* stk-sensor.c: Driver for ov96xx sensor (used in some Syntek webcams)
+ *
+ * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
+ *
+ * Some parts derived from ov7670.c:
+ * Copyright 2006 One Laptop Per Child Association, Inc. Written
+ * by Jonathan Corbet with substantial inspiration from Mark
+ * McClelland's ovcamchip code.
+ *
+ * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
+ *
+ * This file may be distributed under the terms of the GNU General
+ * 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.
+ */
+
+/* Controlling the sensor via the STK1125 vendor specific control interface:
+ * The camera uses an OmniVision sensor and the stk1125 provides an
+ * SCCB(i2c)-USB bridge which let us program the sensor.
+ * In my case the sensor id is 0x9652, it can be read from sensor's register
+ * 0x0A and 0x0B as follows:
+ * - read register #R:
+ * output #R to index 0x0208
+ * output 0x0070 to index 0x0200
+ * input 1 byte from index 0x0201 (some kind of status register)
+ * until its value is 0x01
+ * input 1 byte from index 0x0209. This is the value of #R
+ * - write value V to register #R
+ * output #R to index 0x0204
+ * output V to index 0x0205
+ * output 0x0005 to index 0x0200
+ * input 1 byte from index 0x0201 until its value becomes 0x04
+ */
+
+/* It seems the i2c bus is controlled with these registers */
+
+#include "stk-webcam.h"
+
+#define STK_IIC_BASE (0x0200)
+# define STK_IIC_OP (STK_IIC_BASE)
+# define STK_IIC_OP_TX (0x05)
+# define STK_IIC_OP_RX (0x70)
+# define STK_IIC_STAT (STK_IIC_BASE+1)
+# define STK_IIC_STAT_TX_OK (0x04)
+# define STK_IIC_STAT_RX_OK (0x01)
+/* I don't know what does this register.
+ * when it is 0x00 or 0x01, we cannot talk to the sensor,
+ * other values work */
+# define STK_IIC_ENABLE (STK_IIC_BASE+2)
+# define STK_IIC_ENABLE_NO (0x00)
+/* This is what the driver writes in windows */
+# define STK_IIC_ENABLE_YES (0x1e)
+/*
+ * Address of the slave. Seems like the binary driver look for the
+ * sensor in multiple places, attempting a reset sequence.
+ * We only know about the ov9650
+ */
+# define STK_IIC_ADDR (STK_IIC_BASE+3)
+# define STK_IIC_TX_INDEX (STK_IIC_BASE+4)
+# define STK_IIC_TX_VALUE (STK_IIC_BASE+5)
+# define STK_IIC_RX_INDEX (STK_IIC_BASE+8)
+# define STK_IIC_RX_VALUE (STK_IIC_BASE+9)
+
+#define MAX_RETRIES (50)
+
+#define SENSOR_ADDRESS (0x60)
+
+/* From ov7670.c (These registers aren't fully accurate) */
+
+/* Registers */
+#define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */
+#define REG_BLUE 0x01 /* blue gain */
+#define REG_RED 0x02 /* red gain */
+#define REG_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */
+#define REG_COM1 0x04 /* Control 1 */
+#define COM1_CCIR656 0x40 /* CCIR656 enable */
+#define COM1_QFMT 0x20 /* QVGA/QCIF format */
+#define COM1_SKIP_0 0x00 /* Do not skip any row */
+#define COM1_SKIP_2 0x04 /* Skip 2 rows of 4 */
+#define COM1_SKIP_3 0x08 /* Skip 3 rows of 4 */
+#define REG_BAVE 0x05 /* U/B Average level */
+#define REG_GbAVE 0x06 /* Y/Gb Average level */
+#define REG_AECHH 0x07 /* AEC MS 5 bits */
+#define REG_RAVE 0x08 /* V/R Average level */
+#define REG_COM2 0x09 /* Control 2 */
+#define COM2_SSLEEP 0x10 /* Soft sleep mode */
+#define REG_PID 0x0a /* Product ID MSB */
+#define REG_VER 0x0b /* Product ID LSB */
+#define REG_COM3 0x0c /* Control 3 */
+#define COM3_SWAP 0x40 /* Byte swap */
+#define COM3_SCALEEN 0x08 /* Enable scaling */
+#define COM3_DCWEN 0x04 /* Enable downsamp/crop/window */
+#define REG_COM4 0x0d /* Control 4 */
+#define REG_COM5 0x0e /* All "reserved" */
+#define REG_COM6 0x0f /* Control 6 */
+#define REG_AECH 0x10 /* More bits of AEC value */
+#define REG_CLKRC 0x11 /* Clock control */
+#define CLK_PLL 0x80 /* Enable internal PLL */
+#define CLK_EXT 0x40 /* Use external clock directly */
+#define CLK_SCALE 0x3f /* Mask for internal clock scale */
+#define REG_COM7 0x12 /* Control 7 */
+#define COM7_RESET 0x80 /* Register reset */
+#define COM7_FMT_MASK 0x38
+#define COM7_FMT_SXGA 0x00
+#define COM7_FMT_VGA 0x40
+#define COM7_FMT_CIF 0x20 /* CIF format */
+#define COM7_FMT_QVGA 0x10 /* QVGA format */
+#define COM7_FMT_QCIF 0x08 /* QCIF format */
+#define COM7_RGB 0x04 /* bits 0 and 2 - RGB format */
+#define COM7_YUV 0x00 /* YUV */
+#define COM7_BAYER 0x01 /* Bayer format */
+#define COM7_PBAYER 0x05 /* "Processed bayer" */
+#define REG_COM8 0x13 /* Control 8 */
+#define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */
+#define COM8_AECSTEP 0x40 /* Unlimited AEC step size */
+#define COM8_BFILT 0x20 /* Band filter enable */
+#define COM8_AGC 0x04 /* Auto gain enable */
+#define COM8_AWB 0x02 /* White balance enable */
+#define COM8_AEC 0x01 /* Auto exposure enable */
+#define REG_COM9 0x14 /* Control 9 - gain ceiling */
+#define REG_COM10 0x15 /* Control 10 */
+#define COM10_HSYNC 0x40 /* HSYNC instead of HREF */
+#define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */
+#define COM10_HREF_REV 0x08 /* Reverse HREF */
+#define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */
+#define COM10_VS_NEG 0x02 /* VSYNC negative */
+#define COM10_HS_NEG 0x01 /* HSYNC negative */
+#define REG_HSTART 0x17 /* Horiz start high bits */
+#define REG_HSTOP 0x18 /* Horiz stop high bits */
+#define REG_VSTART 0x19 /* Vert start high bits */
+#define REG_VSTOP 0x1a /* Vert stop high bits */
+#define REG_PSHFT 0x1b /* Pixel delay after HREF */
+#define REG_MIDH 0x1c /* Manuf. ID high */
+#define REG_MIDL 0x1d /* Manuf. ID low */
+#define REG_MVFP 0x1e /* Mirror / vflip */
+#define MVFP_MIRROR 0x20 /* Mirror image */
+#define MVFP_FLIP 0x10 /* Vertical flip */
+
+#define REG_AEW 0x24 /* AGC upper limit */
+#define REG_AEB 0x25 /* AGC lower limit */
+#define REG_VPT 0x26 /* AGC/AEC fast mode op region */
+#define REG_ADVFL 0x2d /* Insert dummy lines (LSB) */
+#define REG_ADVFH 0x2e /* Insert dummy lines (MSB) */
+#define REG_HSYST 0x30 /* HSYNC rising edge delay */
+#define REG_HSYEN 0x31 /* HSYNC falling edge delay */
+#define REG_HREF 0x32 /* HREF pieces */
+#define REG_TSLB 0x3a /* lots of stuff */
+#define TSLB_YLAST 0x04 /* UYVY or VYUY - see com13 */
+#define TSLB_BYTEORD 0x08 /* swap bytes in 16bit mode? */
+#define REG_COM11 0x3b /* Control 11 */
+#define COM11_NIGHT 0x80 /* NIght mode enable */
+#define COM11_NMFR 0x60 /* Two bit NM frame rate */
+#define COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */
+#define COM11_50HZ 0x08 /* Manual 50Hz select */
+#define COM11_EXP 0x02
+#define REG_COM12 0x3c /* Control 12 */
+#define COM12_HREF 0x80 /* HREF always */
+#define REG_COM13 0x3d /* Control 13 */
+#define COM13_GAMMA 0x80 /* Gamma enable */
+#define COM13_UVSAT 0x40 /* UV saturation auto adjustment */
+#define COM13_CMATRIX 0x10 /* Enable color matrix for RGB or YUV */
+#define COM13_UVSWAP 0x01 /* V before U - w/TSLB */
+#define REG_COM14 0x3e /* Control 14 */
+#define COM14_DCWEN 0x10 /* DCW/PCLK-scale enable */
+#define REG_EDGE 0x3f /* Edge enhancement factor */
+#define REG_COM15 0x40 /* Control 15 */
+#define COM15_R10F0 0x00 /* Data range 10 to F0 */
+#define COM15_R01FE 0x80 /* 01 to FE */
+#define COM15_R00FF 0xc0 /* 00 to FF */
+#define COM15_RGB565 0x10 /* RGB565 output */
+#define COM15_RGBFIXME 0x20 /* FIXME */
+#define COM15_RGB555 0x30 /* RGB555 output */
+#define REG_COM16 0x41 /* Control 16 */
+#define COM16_AWBGAIN 0x08 /* AWB gain enable */
+#define REG_COM17 0x42 /* Control 17 */
+#define COM17_AECWIN 0xc0 /* AEC window - must match COM4 */
+#define COM17_CBAR 0x08 /* DSP Color bar */
+
+/*
+ * This matrix defines how the colors are generated, must be
+ * tweaked to adjust hue and saturation.
+ *
+ * Order: v-red, v-green, v-blue, u-red, u-green, u-blue
+ *
+ * They are nine-bit signed quantities, with the sign bit
+ * stored in 0x58. Sign for v-red is bit 0, and up from there.
+ */
+#define REG_CMATRIX_BASE 0x4f
+#define CMATRIX_LEN 6
+#define REG_CMATRIX_SIGN 0x58
+
+
+#define REG_BRIGHT 0x55 /* Brightness */
+#define REG_CONTRAS 0x56 /* Contrast control */
+
+#define REG_GFIX 0x69 /* Fix gain control */
+
+#define REG_RGB444 0x8c /* RGB 444 control */
+#define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */
+#define R444_RGBX 0x01 /* Empty nibble at end */
+
+#define REG_HAECC1 0x9f /* Hist AEC/AGC control 1 */
+#define REG_HAECC2 0xa0 /* Hist AEC/AGC control 2 */
+
+#define REG_BD50MAX 0xa5 /* 50hz banding step limit */
+#define REG_HAECC3 0xa6 /* Hist AEC/AGC control 3 */
+#define REG_HAECC4 0xa7 /* Hist AEC/AGC control 4 */
+#define REG_HAECC5 0xa8 /* Hist AEC/AGC control 5 */
+#define REG_HAECC6 0xa9 /* Hist AEC/AGC control 6 */
+#define REG_HAECC7 0xaa /* Hist AEC/AGC control 7 */
+#define REG_BD60MAX 0xab /* 60hz banding step limit */
+
+
+
+
+/* Returns 0 if OK */
+static int stk_sensor_outb(struct stk_camera *dev, u8 reg, u8 val)
+{
+ int i = 0;
+ int tmpval = 0;
+
+ if (stk_camera_write_reg(dev, STK_IIC_TX_INDEX, reg))
+ return 1;
+ if (stk_camera_write_reg(dev, STK_IIC_TX_VALUE, val))
+ return 1;
+ if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_TX))
+ return 1;
+ do {
+ if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval))
+ return 1;
+ i++;
+ } while (tmpval == 0 && i < MAX_RETRIES);
+ if (tmpval != STK_IIC_STAT_TX_OK) {
+ if (tmpval)
+ STK_ERROR("stk_sensor_outb failed, status=0x%02x\n",
+ tmpval);
+ return 1;
+ } else
+ return 0;
+}
+
+static int stk_sensor_inb(struct stk_camera *dev, u8 reg, u8 *val)
+{
+ int i = 0;
+ int tmpval = 0;
+
+ if (stk_camera_write_reg(dev, STK_IIC_RX_INDEX, reg))
+ return 1;
+ if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_RX))
+ return 1;
+ do {
+ if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval))
+ return 1;
+ i++;
+ } while (tmpval == 0 && i < MAX_RETRIES);
+ if (tmpval != STK_IIC_STAT_RX_OK) {
+ if (tmpval)
+ STK_ERROR("stk_sensor_inb failed, status=0x%02x\n",
+ tmpval);
+ return 1;
+ }
+
+ if (stk_camera_read_reg(dev, STK_IIC_RX_VALUE, &tmpval))
+ return 1;
+
+ *val = (u8) tmpval;
+ return 0;
+}
+
+static int stk_sensor_write_regvals(struct stk_camera *dev,
+ struct regval *rv)
+{
+ int ret;
+ if (rv == NULL)
+ return 0;
+ while (rv->reg != 0xff || rv->val != 0xff) {
+ ret = stk_sensor_outb(dev, rv->reg, rv->val);
+ if (ret != 0)
+ return ret;
+ rv++;
+ }
+ return 0;
+}
+
+int stk_sensor_sleep(struct stk_camera *dev)
+{
+ u8 tmp;
+ return stk_sensor_inb(dev, REG_COM2, &tmp)
+ || stk_sensor_outb(dev, REG_COM2, tmp|COM2_SSLEEP);
+}
+
+int stk_sensor_wakeup(struct stk_camera *dev)
+{
+ u8 tmp;
+ return stk_sensor_inb(dev, REG_COM2, &tmp)
+ || stk_sensor_outb(dev, REG_COM2, tmp&~COM2_SSLEEP);
+}
+
+static struct regval ov_initvals[] = {
+ {REG_CLKRC, CLK_PLL},
+ {REG_COM11, 0x01},
+ {0x6a, 0x7d},
+ {REG_AECH, 0x40},
+ {REG_GAIN, 0x00},
+ {REG_BLUE, 0x80},
+ {REG_RED, 0x80},
+ /* Do not enable fast AEC for now */
+ /*{REG_COM8, COM8_FASTAEC|COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC},*/
+ {REG_COM8, COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC},
+ {0x39, 0x50}, {0x38, 0x93},
+ {0x37, 0x00}, {0x35, 0x81},
+ {REG_COM5, 0x20},
+ {REG_COM1, 0x00},
+ {REG_COM3, 0x00},
+ {REG_COM4, 0x00},
+ {REG_PSHFT, 0x00},
+ {0x16, 0x07},
+ {0x33, 0xe2}, {0x34, 0xbf},
+ {REG_COM16, 0x00},
+ {0x96, 0x04},
+ /* Gamma curve values */
+/* { 0x7a, 0x20 }, { 0x7b, 0x10 },
+ { 0x7c, 0x1e }, { 0x7d, 0x35 },
+ { 0x7e, 0x5a }, { 0x7f, 0x69 },
+ { 0x80, 0x76 }, { 0x81, 0x80 },
+ { 0x82, 0x88 }, { 0x83, 0x8f },
+ { 0x84, 0x96 }, { 0x85, 0xa3 },
+ { 0x86, 0xaf }, { 0x87, 0xc4 },
+ { 0x88, 0xd7 }, { 0x89, 0xe8 },
+*/
+ {REG_GFIX, 0x40},
+ {0x8e, 0x00},
+ {REG_COM12, 0x73},
+ {0x8f, 0xdf}, {0x8b, 0x06},
+ {0x8c, 0x20},
+ {0x94, 0x88}, {0x95, 0x88},
+/* {REG_COM15, 0xc1}, TODO */
+ {0x29, 0x3f},
+ {REG_COM6, 0x42},
+ {REG_BD50MAX, 0x80},
+ {REG_HAECC6, 0xb8}, {REG_HAECC7, 0x92},
+ {REG_BD60MAX, 0x0a},
+ {0x90, 0x00}, {0x91, 0x00},
+ {REG_HAECC1, 0x00}, {REG_HAECC2, 0x00},
+ {REG_AEW, 0x68}, {REG_AEB, 0x5c},
+ {REG_VPT, 0xc3},
+ {REG_COM9, 0x2e},
+ {0x2a, 0x00}, {0x2b, 0x00},
+
+ {0xff, 0xff}, /* END MARKER */
+};
+
+/* Probe the I2C bus and initialise the sensor chip */
+int stk_sensor_init(struct stk_camera *dev)
+{
+ u8 idl = 0;
+ u8 idh = 0;
+
+ if (stk_camera_write_reg(dev, STK_IIC_ENABLE, STK_IIC_ENABLE_YES)
+ || stk_camera_write_reg(dev, STK_IIC_ADDR, SENSOR_ADDRESS)
+ || stk_sensor_outb(dev, REG_COM7, COM7_RESET)) {
+ STK_ERROR("Sensor resetting failed\n");
+ return -ENODEV;
+ }
+ msleep(10);
+ /* Read the manufacturer ID: ov = 0x7FA2 */
+ if (stk_sensor_inb(dev, REG_MIDH, &idh)
+ || stk_sensor_inb(dev, REG_MIDL, &idl)) {
+ STK_ERROR("Strange error reading sensor ID\n");
+ return -ENODEV;
+ }
+ if (idh != 0x7f || idl != 0xa2) {
+ STK_ERROR("Huh? you don't have a sensor from ovt\n");
+ return -ENODEV;
+ }
+ if (stk_sensor_inb(dev, REG_PID, &idh)
+ || stk_sensor_inb(dev, REG_VER, &idl)) {
+ STK_ERROR("Could not read sensor model\n");
+ return -ENODEV;
+ }
+ stk_sensor_write_regvals(dev, ov_initvals);
+ msleep(10);
+ STK_INFO("OmniVision sensor detected, id %02X%02X"
+ " at address %x\n", idh, idl, SENSOR_ADDRESS);
+ return 0;
+}
+
+/* V4L2_PIX_FMT_UYVY */
+static struct regval ov_fmt_uyvy[] = {
+ {REG_TSLB, TSLB_YLAST|0x08 },
+ { 0x4f, 0x80 }, /* "matrix coefficient 1" */
+ { 0x50, 0x80 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x22 }, /* "matrix coefficient 4" */
+ { 0x53, 0x5e }, /* "matrix coefficient 5" */
+ { 0x54, 0x80 }, /* "matrix coefficient 6" */
+ {REG_COM13, COM13_UVSAT|COM13_CMATRIX},
+ {REG_COM15, COM15_R00FF },
+ {0xff, 0xff}, /* END MARKER */
+};
+/* V4L2_PIX_FMT_YUYV */
+static struct regval ov_fmt_yuyv[] = {
+ {REG_TSLB, 0 },
+ { 0x4f, 0x80 }, /* "matrix coefficient 1" */
+ { 0x50, 0x80 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x22 }, /* "matrix coefficient 4" */
+ { 0x53, 0x5e }, /* "matrix coefficient 5" */
+ { 0x54, 0x80 }, /* "matrix coefficient 6" */
+ {REG_COM13, COM13_UVSAT|COM13_CMATRIX},
+ {REG_COM15, COM15_R00FF },
+ {0xff, 0xff}, /* END MARKER */
+};
+
+/* V4L2_PIX_FMT_RGB565X rrrrrggg gggbbbbb */
+static struct regval ov_fmt_rgbr[] = {
+ { REG_RGB444, 0 }, /* No RGB444 please */
+ {REG_TSLB, 0x00},
+ { REG_COM1, 0x0 },
+ { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */
+ { 0x4f, 0xb3 }, /* "matrix coefficient 1" */
+ { 0x50, 0xb3 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x3d }, /* "matrix coefficient 4" */
+ { 0x53, 0xa7 }, /* "matrix coefficient 5" */
+ { 0x54, 0xe4 }, /* "matrix coefficient 6" */
+ { REG_COM13, COM13_GAMMA },
+ { REG_COM15, COM15_RGB565|COM15_R00FF },
+ { 0xff, 0xff },
+};
+
+/* V4L2_PIX_FMT_RGB565 gggbbbbb rrrrrggg */
+static struct regval ov_fmt_rgbp[] = {
+ { REG_RGB444, 0 }, /* No RGB444 please */
+ {REG_TSLB, TSLB_BYTEORD },
+ { REG_COM1, 0x0 },
+ { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */
+ { 0x4f, 0xb3 }, /* "matrix coefficient 1" */
+ { 0x50, 0xb3 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x3d }, /* "matrix coefficient 4" */
+ { 0x53, 0xa7 }, /* "matrix coefficient 5" */
+ { 0x54, 0xe4 }, /* "matrix coefficient 6" */
+ { REG_COM13, COM13_GAMMA },
+ { REG_COM15, COM15_RGB565|COM15_R00FF },
+ { 0xff, 0xff },
+};
+
+/* V4L2_PIX_FMT_SRGGB8 */
+static struct regval ov_fmt_bayer[] = {
+ /* This changes color order */
+ {REG_TSLB, 0x40}, /* BGGR */
+ /* {REG_TSLB, 0x08}, */ /* BGGR with vertical image flipping */
+ {REG_COM15, COM15_R00FF },
+ {0xff, 0xff}, /* END MARKER */
+};
+/*
+ * Store a set of start/stop values into the camera.
+ */
+static int stk_sensor_set_hw(struct stk_camera *dev,
+ int hstart, int hstop, int vstart, int vstop)
+{
+ int ret;
+ unsigned char v;
+/*
+ * Horizontal: 11 bits, top 8 live in hstart and hstop. Bottom 3 of
+ * hstart are in href[2:0], bottom 3 of hstop in href[5:3]. There is
+ * a mystery "edge offset" value in the top two bits of href.
+ */
+ ret = stk_sensor_outb(dev, REG_HSTART, (hstart >> 3) & 0xff);
+ ret += stk_sensor_outb(dev, REG_HSTOP, (hstop >> 3) & 0xff);
+ ret += stk_sensor_inb(dev, REG_HREF, &v);
+ v = (v & 0xc0) | ((hstop & 0x7) << 3) | (hstart & 0x7);
+ msleep(10);
+ ret += stk_sensor_outb(dev, REG_HREF, v);
+/*
+ * Vertical: similar arrangement (note: this is different from ov7670.c)
+ */
+ ret += stk_sensor_outb(dev, REG_VSTART, (vstart >> 3) & 0xff);
+ ret += stk_sensor_outb(dev, REG_VSTOP, (vstop >> 3) & 0xff);
+ ret += stk_sensor_inb(dev, REG_VREF, &v);
+ v = (v & 0xc0) | ((vstop & 0x7) << 3) | (vstart & 0x7);
+ msleep(10);
+ ret += stk_sensor_outb(dev, REG_VREF, v);
+ return ret;
+}
+
+
+int stk_sensor_configure(struct stk_camera *dev)
+{
+ int com7;
+ /*
+ * We setup the sensor to output dummy lines in low-res modes,
+ * so we don't get absurdly hight framerates.
+ */
+ unsigned dummylines;
+ int flip;
+ struct regval *rv;
+
+ switch (dev->vsettings.mode) {
+ case MODE_QCIF: com7 = COM7_FMT_QCIF;
+ dummylines = 604;
+ break;
+ case MODE_QVGA: com7 = COM7_FMT_QVGA;
+ dummylines = 267;
+ break;
+ case MODE_CIF: com7 = COM7_FMT_CIF;
+ dummylines = 412;
+ break;
+ case MODE_VGA: com7 = COM7_FMT_VGA;
+ dummylines = 11;
+ break;
+ case MODE_SXGA: com7 = COM7_FMT_SXGA;
+ dummylines = 0;
+ break;
+ default: STK_ERROR("Unsupported mode %d\n", dev->vsettings.mode);
+ return -EFAULT;
+ }
+ switch (dev->vsettings.palette) {
+ case V4L2_PIX_FMT_UYVY:
+ com7 |= COM7_YUV;
+ rv = ov_fmt_uyvy;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ com7 |= COM7_YUV;
+ rv = ov_fmt_yuyv;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ com7 |= COM7_RGB;
+ rv = ov_fmt_rgbp;
+ break;
+ case V4L2_PIX_FMT_RGB565X:
+ com7 |= COM7_RGB;
+ rv = ov_fmt_rgbr;
+ break;
+ case V4L2_PIX_FMT_SBGGR8:
+ com7 |= COM7_PBAYER;
+ rv = ov_fmt_bayer;
+ break;
+ default: STK_ERROR("Unsupported colorspace\n");
+ return -EFAULT;
+ }
+ /*FIXME sometimes the sensor go to a bad state
+ stk_sensor_write_regvals(dev, ov_initvals); */
+ stk_sensor_outb(dev, REG_COM7, com7);
+ msleep(50);
+ stk_sensor_write_regvals(dev, rv);
+ flip = (dev->vsettings.vflip?MVFP_FLIP:0)
+ | (dev->vsettings.hflip?MVFP_MIRROR:0);
+ stk_sensor_outb(dev, REG_MVFP, flip);
+ if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8
+ && !dev->vsettings.vflip)
+ stk_sensor_outb(dev, REG_TSLB, 0x08);
+ stk_sensor_outb(dev, REG_ADVFH, dummylines >> 8);
+ stk_sensor_outb(dev, REG_ADVFL, dummylines & 0xff);
+ msleep(50);
+ switch (dev->vsettings.mode) {
+ case MODE_VGA:
+ if (stk_sensor_set_hw(dev, 302, 1582, 6, 486))
+ STK_ERROR("stk_sensor_set_hw failed (VGA)\n");
+ break;
+ case MODE_SXGA:
+ case MODE_CIF:
+ case MODE_QVGA:
+ case MODE_QCIF:
+ /*FIXME These settings seem ignored by the sensor
+ if (stk_sensor_set_hw(dev, 220, 1500, 10, 1034))
+ STK_ERROR("stk_sensor_set_hw failed (SXGA)\n");
+ */
+ break;
+ }
+ msleep(10);
+ return 0;
+}
+
+int stk_sensor_set_brightness(struct stk_camera *dev, int br)
+{
+ if (br < 0 || br > 0xff)
+ return -EINVAL;
+ stk_sensor_outb(dev, REG_AEB, max(0x00, br - 6));
+ stk_sensor_outb(dev, REG_AEW, min(0xff, br + 6));
+ return 0;
+}
+
diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c
new file mode 100644
index 00000000000..86a0fc56c33
--- /dev/null
+++ b/drivers/media/usb/stkwebcam/stk-webcam.c
@@ -0,0 +1,1380 @@
+/*
+ * stk-webcam.c : Driver for Syntek 1125 USB webcam controller
+ *
+ * Copyright (C) 2006 Nicolas VIVIEN
+ * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
+ *
+ * Some parts are inspired from cafe_ccic.c
+ * Copyright 2006-2007 Jonathan Corbet
+ *
+ * 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
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+#include <linux/usb.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+
+#include "stk-webcam.h"
+
+
+static bool hflip;
+module_param(hflip, bool, 0444);
+MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 0");
+
+static bool vflip;
+module_param(vflip, bool, 0444);
+MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 0");
+
+static int debug;
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0");
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN");
+MODULE_DESCRIPTION("Syntek DC1125 webcam driver");
+
+
+/* bool for webcam LED management */
+int first_init = 1;
+
+/* Some cameras have audio interfaces, we aren't interested in those */
+static struct usb_device_id stkwebcam_table[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) },
+ { }
+};
+MODULE_DEVICE_TABLE(usb, stkwebcam_table);
+
+/*
+ * Basic stuff
+ */
+int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value)
+{
+ struct usb_device *udev = dev->udev;
+ int ret;
+
+ ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ 0x01,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value,
+ index,
+ NULL,
+ 0,
+ 500);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+int stk_camera_read_reg(struct stk_camera *dev, u16 index, int *value)
+{
+ struct usb_device *udev = dev->udev;
+ int ret;
+
+ ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0x00,
+ index,
+ (u8 *) value,
+ sizeof(u8),
+ 500);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+static int stk_start_stream(struct stk_camera *dev)
+{
+ int value;
+ int i, ret;
+ int value_116, value_117;
+
+ if (!is_present(dev))
+ return -ENODEV;
+ if (!is_memallocd(dev) || !is_initialised(dev)) {
+ STK_ERROR("FIXME: Buffers are not allocated\n");
+ return -EFAULT;
+ }
+ ret = usb_set_interface(dev->udev, 0, 5);
+
+ if (ret < 0)
+ STK_ERROR("usb_set_interface failed !\n");
+ if (stk_sensor_wakeup(dev))
+ STK_ERROR("error awaking the sensor\n");
+
+ stk_camera_read_reg(dev, 0x0116, &value_116);
+ stk_camera_read_reg(dev, 0x0117, &value_117);
+
+ stk_camera_write_reg(dev, 0x0116, 0x0000);
+ stk_camera_write_reg(dev, 0x0117, 0x0000);
+
+ stk_camera_read_reg(dev, 0x0100, &value);
+ stk_camera_write_reg(dev, 0x0100, value | 0x80);
+
+ stk_camera_write_reg(dev, 0x0116, value_116);
+ stk_camera_write_reg(dev, 0x0117, value_117);
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (dev->isobufs[i].urb) {
+ ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL);
+ atomic_inc(&dev->urbs_used);
+ if (ret)
+ return ret;
+ }
+ }
+ set_streaming(dev);
+ return 0;
+}
+
+static int stk_stop_stream(struct stk_camera *dev)
+{
+ int value;
+ int i;
+ if (is_present(dev)) {
+ stk_camera_read_reg(dev, 0x0100, &value);
+ stk_camera_write_reg(dev, 0x0100, value & ~0x80);
+ if (dev->isobufs != NULL) {
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (dev->isobufs[i].urb)
+ usb_kill_urb(dev->isobufs[i].urb);
+ }
+ }
+ unset_streaming(dev);
+
+ if (usb_set_interface(dev->udev, 0, 0))
+ STK_ERROR("usb_set_interface failed !\n");
+ if (stk_sensor_sleep(dev))
+ STK_ERROR("error suspending the sensor\n");
+ }
+ return 0;
+}
+
+/*
+ * This seems to be the shortest init sequence we
+ * must do in order to find the sensor
+ * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor
+ * is also reset. Maybe powers down it?
+ * Rest of values don't make a difference
+ */
+
+static struct regval stk1125_initvals[] = {
+ /*TODO: What means this sequence? */
+ {0x0000, 0x24},
+ {0x0100, 0x21},
+ {0x0002, 0x68},
+ {0x0003, 0x80},
+ {0x0005, 0x00},
+ {0x0007, 0x03},
+ {0x000d, 0x00},
+ {0x000f, 0x02},
+ {0x0300, 0x12},
+ {0x0350, 0x41},
+ {0x0351, 0x00},
+ {0x0352, 0x00},
+ {0x0353, 0x00},
+ {0x0018, 0x10},
+ {0x0019, 0x00},
+ {0x001b, 0x0e},
+ {0x001c, 0x46},
+ {0x0300, 0x80},
+ {0x001a, 0x04},
+ {0x0110, 0x00},
+ {0x0111, 0x00},
+ {0x0112, 0x00},
+ {0x0113, 0x00},
+
+ {0xffff, 0xff},
+};
+
+
+static int stk_initialise(struct stk_camera *dev)
+{
+ struct regval *rv;
+ int ret;
+ if (!is_present(dev))
+ return -ENODEV;
+ if (is_initialised(dev))
+ return 0;
+ rv = stk1125_initvals;
+ while (rv->reg != 0xffff) {
+ ret = stk_camera_write_reg(dev, rv->reg, rv->val);
+ if (ret)
+ return ret;
+ rv++;
+ }
+ if (stk_sensor_init(dev) == 0) {
+ set_initialised(dev);
+ return 0;
+ } else
+ return -1;
+}
+
+/* *********************************************** */
+/*
+ * This function is called as an URB transfert is complete (Isochronous pipe).
+ * So, the traitement is done in interrupt time, so it has be fast, not crash,
+ * and not stall. Neat.
+ */
+static void stk_isoc_handler(struct urb *urb)
+{
+ int i;
+ int ret;
+ int framelen;
+ unsigned long flags;
+
+ unsigned char *fill = NULL;
+ unsigned char *iso_buf = NULL;
+
+ struct stk_camera *dev;
+ struct stk_sio_buffer *fb;
+
+ dev = (struct stk_camera *) urb->context;
+
+ if (dev == NULL) {
+ STK_ERROR("isoc_handler called with NULL device !\n");
+ return;
+ }
+
+ if (urb->status == -ENOENT || urb->status == -ECONNRESET
+ || urb->status == -ESHUTDOWN) {
+ atomic_dec(&dev->urbs_used);
+ return;
+ }
+
+ spin_lock_irqsave(&dev->spinlock, flags);
+
+ if (urb->status != -EINPROGRESS && urb->status != 0) {
+ STK_ERROR("isoc_handler: urb->status == %d\n", urb->status);
+ goto resubmit;
+ }
+
+ if (list_empty(&dev->sio_avail)) {
+ /*FIXME Stop streaming after a while */
+ (void) (printk_ratelimit() &&
+ STK_ERROR("isoc_handler without available buffer!\n"));
+ goto resubmit;
+ }
+ fb = list_first_entry(&dev->sio_avail,
+ struct stk_sio_buffer, list);
+ fill = fb->buffer + fb->v4lbuf.bytesused;
+
+ for (i = 0; i < urb->number_of_packets; i++) {
+ if (urb->iso_frame_desc[i].status != 0) {
+ if (urb->iso_frame_desc[i].status != -EXDEV)
+ STK_ERROR("Frame %d has error %d\n", i,
+ urb->iso_frame_desc[i].status);
+ continue;
+ }
+ framelen = urb->iso_frame_desc[i].actual_length;
+ iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+
+ if (framelen <= 4)
+ continue; /* no data */
+
+ /*
+ * we found something informational from there
+ * the isoc frames have to type of headers
+ * type1: 00 xx 00 00 or 20 xx 00 00
+ * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00
+ * xx is a sequencer which has never been seen over 0x3f
+ * imho data written down looks like bayer, i see similarities
+ * after every 640 bytes
+ */
+ if (*iso_buf & 0x80) {
+ framelen -= 8;
+ iso_buf += 8;
+ /* This marks a new frame */
+ if (fb->v4lbuf.bytesused != 0
+ && fb->v4lbuf.bytesused != dev->frame_size) {
+ (void) (printk_ratelimit() &&
+ STK_ERROR("frame %d, "
+ "bytesused=%d, skipping\n",
+ i, fb->v4lbuf.bytesused));
+ fb->v4lbuf.bytesused = 0;
+ fill = fb->buffer;
+ } else if (fb->v4lbuf.bytesused == dev->frame_size) {
+ if (list_is_singular(&dev->sio_avail)) {
+ /* Always reuse the last buffer */
+ fb->v4lbuf.bytesused = 0;
+ fill = fb->buffer;
+ } else {
+ list_move_tail(dev->sio_avail.next,
+ &dev->sio_full);
+ wake_up(&dev->wait_frame);
+ fb = list_first_entry(&dev->sio_avail,
+ struct stk_sio_buffer, list);
+ fb->v4lbuf.bytesused = 0;
+ fill = fb->buffer;
+ }
+ }
+ } else {
+ framelen -= 4;
+ iso_buf += 4;
+ }
+
+ /* Our buffer is full !!! */
+ if (framelen + fb->v4lbuf.bytesused > dev->frame_size) {
+ (void) (printk_ratelimit() &&
+ STK_ERROR("Frame buffer overflow, lost sync\n"));
+ /*FIXME Do something here? */
+ continue;
+ }
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ memcpy(fill, iso_buf, framelen);
+ spin_lock_irqsave(&dev->spinlock, flags);
+ fill += framelen;
+
+ /* New size of our buffer */
+ fb->v4lbuf.bytesused += framelen;
+ }
+
+resubmit:
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ urb->dev = dev->udev;
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret != 0) {
+ STK_ERROR("Error (%d) re-submitting urb in stk_isoc_handler.\n",
+ ret);
+ }
+}
+
+/* -------------------------------------------- */
+
+static int stk_prepare_iso(struct stk_camera *dev)
+{
+ void *kbuf;
+ int i, j;
+ struct urb *urb;
+ struct usb_device *udev;
+
+ if (dev == NULL)
+ return -ENXIO;
+ udev = dev->udev;
+
+ if (dev->isobufs)
+ STK_ERROR("isobufs already allocated. Bad\n");
+ else
+ dev->isobufs = kcalloc(MAX_ISO_BUFS, sizeof(*dev->isobufs),
+ GFP_KERNEL);
+ if (dev->isobufs == NULL) {
+ STK_ERROR("Unable to allocate iso buffers\n");
+ return -ENOMEM;
+ }
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (dev->isobufs[i].data == NULL) {
+ kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
+ if (kbuf == NULL) {
+ STK_ERROR("Failed to allocate iso buffer %d\n",
+ i);
+ goto isobufs_out;
+ }
+ dev->isobufs[i].data = kbuf;
+ } else
+ STK_ERROR("isobuf data already allocated\n");
+ if (dev->isobufs[i].urb == NULL) {
+ urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
+ if (urb == NULL) {
+ STK_ERROR("Failed to allocate URB %d\n", i);
+ goto isobufs_out;
+ }
+ dev->isobufs[i].urb = urb;
+ } else {
+ STK_ERROR("Killing URB\n");
+ usb_kill_urb(dev->isobufs[i].urb);
+ urb = dev->isobufs[i].urb;
+ }
+ urb->interval = 1;
+ urb->dev = udev;
+ urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep);
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->transfer_buffer = dev->isobufs[i].data;
+ urb->transfer_buffer_length = ISO_BUFFER_SIZE;
+ urb->complete = stk_isoc_handler;
+ urb->context = dev;
+ urb->start_frame = 0;
+ urb->number_of_packets = ISO_FRAMES_PER_DESC;
+
+ for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
+ urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
+ urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE;
+ }
+ }
+ set_memallocd(dev);
+ return 0;
+
+isobufs_out:
+ for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++)
+ kfree(dev->isobufs[i].data);
+ for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++)
+ usb_free_urb(dev->isobufs[i].urb);
+ kfree(dev->isobufs);
+ dev->isobufs = NULL;
+ return -ENOMEM;
+}
+
+static void stk_clean_iso(struct stk_camera *dev)
+{
+ int i;
+
+ if (dev == NULL || dev->isobufs == NULL)
+ return;
+
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ struct urb *urb;
+
+ urb = dev->isobufs[i].urb;
+ if (urb) {
+ if (atomic_read(&dev->urbs_used) && is_present(dev))
+ usb_kill_urb(urb);
+ usb_free_urb(urb);
+ }
+ kfree(dev->isobufs[i].data);
+ }
+ kfree(dev->isobufs);
+ dev->isobufs = NULL;
+ unset_memallocd(dev);
+}
+
+static int stk_setup_siobuf(struct stk_camera *dev, int index)
+{
+ struct stk_sio_buffer *buf = dev->sio_bufs + index;
+ INIT_LIST_HEAD(&buf->list);
+ buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size);
+ buf->buffer = vmalloc_user(buf->v4lbuf.length);
+ if (buf->buffer == NULL)
+ return -ENOMEM;
+ buf->mapcount = 0;
+ buf->dev = dev;
+ buf->v4lbuf.index = index;
+ buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf->v4lbuf.field = V4L2_FIELD_NONE;
+ buf->v4lbuf.memory = V4L2_MEMORY_MMAP;
+ buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length;
+ return 0;
+}
+
+static int stk_free_sio_buffers(struct stk_camera *dev)
+{
+ int i;
+ int nbufs;
+ unsigned long flags;
+ if (dev->n_sbufs == 0 || dev->sio_bufs == NULL)
+ return 0;
+ /*
+ * If any buffers are mapped, we cannot free them at all.
+ */
+ for (i = 0; i < dev->n_sbufs; i++) {
+ if (dev->sio_bufs[i].mapcount > 0)
+ return -EBUSY;
+ }
+ /*
+ * OK, let's do it.
+ */
+ spin_lock_irqsave(&dev->spinlock, flags);
+ INIT_LIST_HEAD(&dev->sio_avail);
+ INIT_LIST_HEAD(&dev->sio_full);
+ nbufs = dev->n_sbufs;
+ dev->n_sbufs = 0;
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ for (i = 0; i < nbufs; i++) {
+ if (dev->sio_bufs[i].buffer != NULL)
+ vfree(dev->sio_bufs[i].buffer);
+ }
+ kfree(dev->sio_bufs);
+ dev->sio_bufs = NULL;
+ return 0;
+}
+
+static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs)
+{
+ int i;
+ if (dev->sio_bufs != NULL)
+ STK_ERROR("sio_bufs already allocated\n");
+ else {
+ dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer),
+ GFP_KERNEL);
+ if (dev->sio_bufs == NULL)
+ return -ENOMEM;
+ for (i = 0; i < n_sbufs; i++) {
+ if (stk_setup_siobuf(dev, i))
+ return (dev->n_sbufs > 1 ? 0 : -ENOMEM);
+ dev->n_sbufs = i+1;
+ }
+ }
+ return 0;
+}
+
+static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs)
+{
+ int err;
+ err = stk_prepare_iso(dev);
+ if (err) {
+ stk_clean_iso(dev);
+ return err;
+ }
+ err = stk_prepare_sio_buffers(dev, n_sbufs);
+ if (err) {
+ stk_free_sio_buffers(dev);
+ return err;
+ }
+ return 0;
+}
+
+static void stk_free_buffers(struct stk_camera *dev)
+{
+ stk_clean_iso(dev);
+ stk_free_sio_buffers(dev);
+}
+/* -------------------------------------------- */
+
+/* v4l file operations */
+
+static int v4l_stk_open(struct file *fp)
+{
+ struct stk_camera *dev;
+ struct video_device *vdev;
+
+ vdev = video_devdata(fp);
+ dev = vdev_to_camera(vdev);
+
+ if (dev == NULL || !is_present(dev))
+ return -ENXIO;
+
+ if (!first_init)
+ stk_camera_write_reg(dev, 0x0, 0x24);
+ else
+ first_init = 0;
+
+ fp->private_data = dev;
+ usb_autopm_get_interface(dev->interface);
+
+ return 0;
+}
+
+static int v4l_stk_release(struct file *fp)
+{
+ struct stk_camera *dev = fp->private_data;
+
+ if (dev->owner == fp) {
+ stk_stop_stream(dev);
+ stk_free_buffers(dev);
+ stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */
+ unset_initialised(dev);
+ dev->owner = NULL;
+ }
+
+ if (is_present(dev))
+ usb_autopm_put_interface(dev->interface);
+
+ return 0;
+}
+
+static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
+ size_t count, loff_t *f_pos)
+{
+ int i;
+ int ret;
+ unsigned long flags;
+ struct stk_sio_buffer *sbuf;
+ struct stk_camera *dev = fp->private_data;
+
+ if (!is_present(dev))
+ return -EIO;
+ if (dev->owner && dev->owner != fp)
+ return -EBUSY;
+ dev->owner = fp;
+ if (!is_streaming(dev)) {
+ if (stk_initialise(dev)
+ || stk_allocate_buffers(dev, 3)
+ || stk_start_stream(dev))
+ return -ENOMEM;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ for (i = 0; i < dev->n_sbufs; i++) {
+ list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail);
+ dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED;
+ }
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ }
+ if (*f_pos == 0) {
+ if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
+ return -EWOULDBLOCK;
+ ret = wait_event_interruptible(dev->wait_frame,
+ !list_empty(&dev->sio_full) || !is_present(dev));
+ if (ret)
+ return ret;
+ if (!is_present(dev))
+ return -EIO;
+ }
+ if (count + *f_pos > dev->frame_size)
+ count = dev->frame_size - *f_pos;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ if (list_empty(&dev->sio_full)) {
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ STK_ERROR("BUG: No siobufs ready\n");
+ return 0;
+ }
+ sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+
+ if (copy_to_user(buf, sbuf->buffer + *f_pos, count))
+ return -EFAULT;
+
+ *f_pos += count;
+
+ if (*f_pos >= dev->frame_size) {
+ *f_pos = 0;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ list_move_tail(&sbuf->list, &dev->sio_avail);
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ }
+ return count;
+}
+
+static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
+{
+ struct stk_camera *dev = fp->private_data;
+
+ poll_wait(fp, &dev->wait_frame, wait);
+
+ if (!is_present(dev))
+ return POLLERR;
+
+ if (!list_empty(&dev->sio_full))
+ return POLLIN | POLLRDNORM;
+
+ return 0;
+}
+
+
+static void stk_v4l_vm_open(struct vm_area_struct *vma)
+{
+ struct stk_sio_buffer *sbuf = vma->vm_private_data;
+ sbuf->mapcount++;
+}
+static void stk_v4l_vm_close(struct vm_area_struct *vma)
+{
+ struct stk_sio_buffer *sbuf = vma->vm_private_data;
+ sbuf->mapcount--;
+ if (sbuf->mapcount == 0)
+ sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED;
+}
+static const struct vm_operations_struct stk_v4l_vm_ops = {
+ .open = stk_v4l_vm_open,
+ .close = stk_v4l_vm_close
+};
+
+static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma)
+{
+ unsigned int i;
+ int ret;
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+ struct stk_camera *dev = fp->private_data;
+ struct stk_sio_buffer *sbuf = NULL;
+
+ if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
+ return -EINVAL;
+
+ for (i = 0; i < dev->n_sbufs; i++) {
+ if (dev->sio_bufs[i].v4lbuf.m.offset == offset) {
+ sbuf = dev->sio_bufs + i;
+ break;
+ }
+ }
+ if (sbuf == NULL)
+ return -EINVAL;
+ ret = remap_vmalloc_range(vma, sbuf->buffer, 0);
+ if (ret)
+ return ret;
+ vma->vm_flags |= VM_DONTEXPAND;
+ vma->vm_private_data = sbuf;
+ vma->vm_ops = &stk_v4l_vm_ops;
+ sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED;
+ stk_v4l_vm_open(vma);
+ return 0;
+}
+
+/* v4l ioctl handlers */
+
+static int stk_vidioc_querycap(struct file *filp,
+ void *priv, struct v4l2_capability *cap)
+{
+ strcpy(cap->driver, "stk");
+ strcpy(cap->card, "stk");
+ cap->version = DRIVER_VERSION_NUM;
+
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
+ | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+ return 0;
+}
+
+static int stk_vidioc_enum_input(struct file *filp,
+ void *priv, struct v4l2_input *input)
+{
+ if (input->index != 0)
+ return -EINVAL;
+
+ strcpy(input->name, "Syntek USB Camera");
+ input->type = V4L2_INPUT_TYPE_CAMERA;
+ return 0;
+}
+
+
+static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
+{
+ if (i != 0)
+ return -EINVAL;
+ else
+ return 0;
+}
+
+/* from vivi.c */
+static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
+{
+ return 0;
+}
+
+/* List of all V4Lv2 controls supported by the driver */
+static struct v4l2_queryctrl stk_controls[] = {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+ .maximum = 0xffff,
+ .step = 0x0100,
+ .default_value = 0x6000,
+ },
+ {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Horizontal Flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ },
+ {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Vertical Flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ },
+};
+
+static int stk_vidioc_queryctrl(struct file *filp,
+ void *priv, struct v4l2_queryctrl *c)
+{
+ int i;
+ int nbr;
+ nbr = ARRAY_SIZE(stk_controls);
+
+ for (i = 0; i < nbr; i++) {
+ if (stk_controls[i].id == c->id) {
+ memcpy(c, &stk_controls[i],
+ sizeof(struct v4l2_queryctrl));
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+static int stk_vidioc_g_ctrl(struct file *filp,
+ void *priv, struct v4l2_control *c)
+{
+ struct stk_camera *dev = priv;
+ switch (c->id) {
+ case V4L2_CID_BRIGHTNESS:
+ c->value = dev->vsettings.brightness;
+ break;
+ case V4L2_CID_HFLIP:
+ c->value = dev->vsettings.hflip;
+ break;
+ case V4L2_CID_VFLIP:
+ c->value = dev->vsettings.vflip;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int stk_vidioc_s_ctrl(struct file *filp,
+ void *priv, struct v4l2_control *c)
+{
+ struct stk_camera *dev = priv;
+ switch (c->id) {
+ case V4L2_CID_BRIGHTNESS:
+ dev->vsettings.brightness = c->value;
+ return stk_sensor_set_brightness(dev, c->value >> 8);
+ case V4L2_CID_HFLIP:
+ dev->vsettings.hflip = c->value;
+ return 0;
+ case V4L2_CID_VFLIP:
+ dev->vsettings.vflip = c->value;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+
+static int stk_vidioc_enum_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_fmtdesc *fmtd)
+{
+ switch (fmtd->index) {
+ case 0:
+ fmtd->pixelformat = V4L2_PIX_FMT_RGB565;
+ strcpy(fmtd->description, "r5g6b5");
+ break;
+ case 1:
+ fmtd->pixelformat = V4L2_PIX_FMT_RGB565X;
+ strcpy(fmtd->description, "r5g6b5BE");
+ break;
+ case 2:
+ fmtd->pixelformat = V4L2_PIX_FMT_UYVY;
+ strcpy(fmtd->description, "yuv4:2:2");
+ break;
+ case 3:
+ fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8;
+ strcpy(fmtd->description, "Raw bayer");
+ break;
+ case 4:
+ fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
+ strcpy(fmtd->description, "yuv4:2:2");
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static struct stk_size {
+ unsigned w;
+ unsigned h;
+ enum stk_mode m;
+} stk_sizes[] = {
+ { .w = 1280, .h = 1024, .m = MODE_SXGA, },
+ { .w = 640, .h = 480, .m = MODE_VGA, },
+ { .w = 352, .h = 288, .m = MODE_CIF, },
+ { .w = 320, .h = 240, .m = MODE_QVGA, },
+ { .w = 176, .h = 144, .m = MODE_QCIF, },
+};
+
+static int stk_vidioc_g_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_format *f)
+{
+ struct v4l2_pix_format *pix_format = &f->fmt.pix;
+ struct stk_camera *dev = priv;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(stk_sizes) &&
+ stk_sizes[i].m != dev->vsettings.mode; i++)
+ ;
+ if (i == ARRAY_SIZE(stk_sizes)) {
+ STK_ERROR("ERROR: mode invalid\n");
+ return -EINVAL;
+ }
+ pix_format->width = stk_sizes[i].w;
+ pix_format->height = stk_sizes[i].h;
+ pix_format->field = V4L2_FIELD_NONE;
+ pix_format->colorspace = V4L2_COLORSPACE_SRGB;
+ pix_format->pixelformat = dev->vsettings.palette;
+ if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
+ pix_format->bytesperline = pix_format->width;
+ else
+ pix_format->bytesperline = 2 * pix_format->width;
+ pix_format->sizeimage = pix_format->bytesperline
+ * pix_format->height;
+ return 0;
+}
+
+static int stk_vidioc_try_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_format *fmtd)
+{
+ int i;
+ switch (fmtd->fmt.pix.pixelformat) {
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB565X:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_SBGGR8:
+ break;
+ default:
+ return -EINVAL;
+ }
+ for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) {
+ if (fmtd->fmt.pix.width > stk_sizes[i].w)
+ break;
+ }
+ if (i == ARRAY_SIZE(stk_sizes)
+ || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w)
+ < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) {
+ fmtd->fmt.pix.height = stk_sizes[i-1].h;
+ fmtd->fmt.pix.width = stk_sizes[i-1].w;
+ fmtd->fmt.pix.priv = i - 1;
+ } else {
+ fmtd->fmt.pix.height = stk_sizes[i].h;
+ fmtd->fmt.pix.width = stk_sizes[i].w;
+ fmtd->fmt.pix.priv = i;
+ }
+
+ fmtd->fmt.pix.field = V4L2_FIELD_NONE;
+ fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
+ if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8)
+ fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width;
+ else
+ fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width;
+ fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline
+ * fmtd->fmt.pix.height;
+ return 0;
+}
+
+static int stk_setup_format(struct stk_camera *dev)
+{
+ int i = 0;
+ int depth;
+ if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
+ depth = 1;
+ else
+ depth = 2;
+ while (i < ARRAY_SIZE(stk_sizes) &&
+ stk_sizes[i].m != dev->vsettings.mode)
+ i++;
+ if (i == ARRAY_SIZE(stk_sizes)) {
+ STK_ERROR("Something is broken in %s\n", __func__);
+ return -EFAULT;
+ }
+ /* This registers controls some timings, not sure of what. */
+ stk_camera_write_reg(dev, 0x001b, 0x0e);
+ if (dev->vsettings.mode == MODE_SXGA)
+ stk_camera_write_reg(dev, 0x001c, 0x0e);
+ else
+ stk_camera_write_reg(dev, 0x001c, 0x46);
+ /*
+ * Registers 0x0115 0x0114 are the size of each line (bytes),
+ * regs 0x0117 0x0116 are the heigth of the image.
+ */
+ stk_camera_write_reg(dev, 0x0115,
+ ((stk_sizes[i].w * depth) >> 8) & 0xff);
+ stk_camera_write_reg(dev, 0x0114,
+ (stk_sizes[i].w * depth) & 0xff);
+ stk_camera_write_reg(dev, 0x0117,
+ (stk_sizes[i].h >> 8) & 0xff);
+ stk_camera_write_reg(dev, 0x0116,
+ stk_sizes[i].h & 0xff);
+ return stk_sensor_configure(dev);
+}
+
+static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_format *fmtd)
+{
+ int ret;
+ struct stk_camera *dev = priv;
+
+ if (dev == NULL)
+ return -ENODEV;
+ if (!is_present(dev))
+ return -ENODEV;
+ if (is_streaming(dev))
+ return -EBUSY;
+ if (dev->owner && dev->owner != filp)
+ return -EBUSY;
+ ret = stk_vidioc_try_fmt_vid_cap(filp, priv, fmtd);
+ if (ret)
+ return ret;
+ dev->owner = filp;
+
+ dev->vsettings.palette = fmtd->fmt.pix.pixelformat;
+ stk_free_buffers(dev);
+ dev->frame_size = fmtd->fmt.pix.sizeimage;
+ dev->vsettings.mode = stk_sizes[fmtd->fmt.pix.priv].m;
+
+ stk_initialise(dev);
+ return stk_setup_format(dev);
+}
+
+static int stk_vidioc_reqbufs(struct file *filp,
+ void *priv, struct v4l2_requestbuffers *rb)
+{
+ struct stk_camera *dev = priv;
+
+ if (dev == NULL)
+ return -ENODEV;
+ if (rb->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+ if (is_streaming(dev)
+ || (dev->owner && dev->owner != filp))
+ return -EBUSY;
+ dev->owner = filp;
+
+ /*FIXME If they ask for zero, we must stop streaming and free */
+ if (rb->count < 3)
+ rb->count = 3;
+ /* Arbitrary limit */
+ else if (rb->count > 5)
+ rb->count = 5;
+
+ stk_allocate_buffers(dev, rb->count);
+ rb->count = dev->n_sbufs;
+ return 0;
+}
+
+static int stk_vidioc_querybuf(struct file *filp,
+ void *priv, struct v4l2_buffer *buf)
+{
+ struct stk_camera *dev = priv;
+ struct stk_sio_buffer *sbuf;
+
+ if (buf->index >= dev->n_sbufs)
+ return -EINVAL;
+ sbuf = dev->sio_bufs + buf->index;
+ *buf = sbuf->v4lbuf;
+ return 0;
+}
+
+static int stk_vidioc_qbuf(struct file *filp,
+ void *priv, struct v4l2_buffer *buf)
+{
+ struct stk_camera *dev = priv;
+ struct stk_sio_buffer *sbuf;
+ unsigned long flags;
+
+ if (buf->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+
+ if (buf->index >= dev->n_sbufs)
+ return -EINVAL;
+ sbuf = dev->sio_bufs + buf->index;
+ if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED)
+ return 0;
+ sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED;
+ sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ list_add_tail(&sbuf->list, &dev->sio_avail);
+ *buf = sbuf->v4lbuf;
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ return 0;
+}
+
+static int stk_vidioc_dqbuf(struct file *filp,
+ void *priv, struct v4l2_buffer *buf)
+{
+ struct stk_camera *dev = priv;
+ struct stk_sio_buffer *sbuf;
+ unsigned long flags;
+ int ret;
+
+ if (!is_streaming(dev))
+ return -EINVAL;
+
+ if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
+ return -EWOULDBLOCK;
+ ret = wait_event_interruptible(dev->wait_frame,
+ !list_empty(&dev->sio_full) || !is_present(dev));
+ if (ret)
+ return ret;
+ if (!is_present(dev))
+ return -EIO;
+
+ spin_lock_irqsave(&dev->spinlock, flags);
+ sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
+ list_del_init(&sbuf->list);
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED;
+ sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE;
+ sbuf->v4lbuf.sequence = ++dev->sequence;
+ do_gettimeofday(&sbuf->v4lbuf.timestamp);
+
+ *buf = sbuf->v4lbuf;
+ return 0;
+}
+
+static int stk_vidioc_streamon(struct file *filp,
+ void *priv, enum v4l2_buf_type type)
+{
+ struct stk_camera *dev = priv;
+ if (is_streaming(dev))
+ return 0;
+ if (dev->sio_bufs == NULL)
+ return -EINVAL;
+ dev->sequence = 0;
+ return stk_start_stream(dev);
+}
+
+static int stk_vidioc_streamoff(struct file *filp,
+ void *priv, enum v4l2_buf_type type)
+{
+ struct stk_camera *dev = priv;
+ unsigned long flags;
+ int i;
+ stk_stop_stream(dev);
+ spin_lock_irqsave(&dev->spinlock, flags);
+ INIT_LIST_HEAD(&dev->sio_avail);
+ INIT_LIST_HEAD(&dev->sio_full);
+ for (i = 0; i < dev->n_sbufs; i++) {
+ INIT_LIST_HEAD(&dev->sio_bufs[i].list);
+ dev->sio_bufs[i].v4lbuf.flags = 0;
+ }
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ return 0;
+}
+
+
+static int stk_vidioc_g_parm(struct file *filp,
+ void *priv, struct v4l2_streamparm *sp)
+{
+ /*FIXME This is not correct */
+ sp->parm.capture.timeperframe.numerator = 1;
+ sp->parm.capture.timeperframe.denominator = 30;
+ sp->parm.capture.readbuffers = 2;
+ return 0;
+}
+
+static int stk_vidioc_enum_framesizes(struct file *filp,
+ void *priv, struct v4l2_frmsizeenum *frms)
+{
+ if (frms->index >= ARRAY_SIZE(stk_sizes))
+ return -EINVAL;
+ switch (frms->pixel_format) {
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB565X:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_SBGGR8:
+ frms->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ frms->discrete.width = stk_sizes[frms->index].w;
+ frms->discrete.height = stk_sizes[frms->index].h;
+ return 0;
+ default: return -EINVAL;
+ }
+}
+
+static struct v4l2_file_operations v4l_stk_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l_stk_open,
+ .release = v4l_stk_release,
+ .read = v4l_stk_read,
+ .poll = v4l_stk_poll,
+ .mmap = v4l_stk_mmap,
+ .ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
+ .vidioc_querycap = stk_vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap,
+ .vidioc_enum_input = stk_vidioc_enum_input,
+ .vidioc_s_input = stk_vidioc_s_input,
+ .vidioc_g_input = stk_vidioc_g_input,
+ .vidioc_s_std = stk_vidioc_s_std,
+ .vidioc_reqbufs = stk_vidioc_reqbufs,
+ .vidioc_querybuf = stk_vidioc_querybuf,
+ .vidioc_qbuf = stk_vidioc_qbuf,
+ .vidioc_dqbuf = stk_vidioc_dqbuf,
+ .vidioc_streamon = stk_vidioc_streamon,
+ .vidioc_streamoff = stk_vidioc_streamoff,
+ .vidioc_queryctrl = stk_vidioc_queryctrl,
+ .vidioc_g_ctrl = stk_vidioc_g_ctrl,
+ .vidioc_s_ctrl = stk_vidioc_s_ctrl,
+ .vidioc_g_parm = stk_vidioc_g_parm,
+ .vidioc_enum_framesizes = stk_vidioc_enum_framesizes,
+};
+
+static void stk_v4l_dev_release(struct video_device *vd)
+{
+ struct stk_camera *dev = vdev_to_camera(vd);
+
+ if (dev->sio_bufs != NULL || dev->isobufs != NULL)
+ STK_ERROR("We are leaking memory\n");
+ usb_put_intf(dev->interface);
+ kfree(dev);
+}
+
+static struct video_device stk_v4l_data = {
+ .name = "stkwebcam",
+ .tvnorms = V4L2_STD_UNKNOWN,
+ .current_norm = V4L2_STD_UNKNOWN,
+ .fops = &v4l_stk_fops,
+ .ioctl_ops = &v4l_stk_ioctl_ops,
+ .release = stk_v4l_dev_release,
+};
+
+
+static int stk_register_video_device(struct stk_camera *dev)
+{
+ int err;
+
+ dev->vdev = stk_v4l_data;
+ dev->vdev.debug = debug;
+ dev->vdev.parent = &dev->interface->dev;
+ err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
+ if (err)
+ STK_ERROR("v4l registration failed\n");
+ else
+ STK_INFO("Syntek USB2.0 Camera is now controlling device %s\n",
+ video_device_node_name(&dev->vdev));
+ return err;
+}
+
+
+/* USB Stuff */
+
+static int stk_camera_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ int i;
+ int err = 0;
+
+ struct stk_camera *dev = NULL;
+ struct usb_device *udev = interface_to_usbdev(interface);
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+
+ dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL);
+ if (dev == NULL) {
+ STK_ERROR("Out of memory !\n");
+ return -ENOMEM;
+ }
+
+ spin_lock_init(&dev->spinlock);
+ init_waitqueue_head(&dev->wait_frame);
+
+ dev->udev = udev;
+ dev->interface = interface;
+ usb_get_intf(interface);
+
+ dev->vsettings.vflip = vflip;
+ dev->vsettings.hflip = hflip;
+ dev->n_sbufs = 0;
+ set_present(dev);
+
+ /* Set up the endpoint information
+ * use only the first isoc-in endpoint
+ * for the current alternate setting */
+ iface_desc = interface->cur_altsetting;
+
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+
+ if (!dev->isoc_ep
+ && usb_endpoint_is_isoc_in(endpoint)) {
+ /* we found an isoc in endpoint */
+ dev->isoc_ep = usb_endpoint_num(endpoint);
+ break;
+ }
+ }
+ if (!dev->isoc_ep) {
+ STK_ERROR("Could not find isoc-in endpoint");
+ err = -ENODEV;
+ goto error;
+ }
+ dev->vsettings.brightness = 0x7fff;
+ dev->vsettings.palette = V4L2_PIX_FMT_RGB565;
+ dev->vsettings.mode = MODE_VGA;
+ dev->frame_size = 640 * 480 * 2;
+
+ INIT_LIST_HEAD(&dev->sio_avail);
+ INIT_LIST_HEAD(&dev->sio_full);
+
+ usb_set_intfdata(interface, dev);
+
+ err = stk_register_video_device(dev);
+ if (err)
+ goto error;
+
+ return 0;
+
+error:
+ kfree(dev);
+ return err;
+}
+
+static void stk_camera_disconnect(struct usb_interface *interface)
+{
+ struct stk_camera *dev = usb_get_intfdata(interface);
+
+ usb_set_intfdata(interface, NULL);
+ unset_present(dev);
+
+ wake_up_interruptible(&dev->wait_frame);
+
+ STK_INFO("Syntek USB2.0 Camera release resources device %s\n",
+ video_device_node_name(&dev->vdev));
+
+ video_unregister_device(&dev->vdev);
+}
+
+#ifdef CONFIG_PM
+static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct stk_camera *dev = usb_get_intfdata(intf);
+ if (is_streaming(dev)) {
+ stk_stop_stream(dev);
+ /* yes, this is ugly */
+ set_streaming(dev);
+ }
+ return 0;
+}
+
+static int stk_camera_resume(struct usb_interface *intf)
+{
+ struct stk_camera *dev = usb_get_intfdata(intf);
+ if (!is_initialised(dev))
+ return 0;
+ unset_initialised(dev);
+ stk_initialise(dev);
+ stk_camera_write_reg(dev, 0x0, 0x49);
+ stk_setup_format(dev);
+ if (is_streaming(dev))
+ stk_start_stream(dev);
+ return 0;
+}
+#endif
+
+static struct usb_driver stk_camera_driver = {
+ .name = "stkwebcam",
+ .probe = stk_camera_probe,
+ .disconnect = stk_camera_disconnect,
+ .id_table = stkwebcam_table,
+#ifdef CONFIG_PM
+ .suspend = stk_camera_suspend,
+ .resume = stk_camera_resume,
+#endif
+};
+
+module_usb_driver(stk_camera_driver);
diff --git a/drivers/media/usb/stkwebcam/stk-webcam.h b/drivers/media/usb/stkwebcam/stk-webcam.h
new file mode 100644
index 00000000000..9f673663757
--- /dev/null
+++ b/drivers/media/usb/stkwebcam/stk-webcam.h
@@ -0,0 +1,134 @@
+/*
+ * stk-webcam.h : Driver for Syntek 1125 USB webcam controller
+ *
+ * Copyright (C) 2006 Nicolas VIVIEN
+ * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
+ *
+ * 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
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef STKWEBCAM_H
+#define STKWEBCAM_H
+
+#include <linux/usb.h>
+#include <media/v4l2-common.h>
+
+#define DRIVER_VERSION "v0.0.1"
+#define DRIVER_VERSION_NUM 0x000001
+
+#define MAX_ISO_BUFS 3
+#define ISO_FRAMES_PER_DESC 16
+#define ISO_MAX_FRAME_SIZE 3 * 1024
+#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
+
+
+#define PREFIX "stkwebcam: "
+#define STK_INFO(str, args...) printk(KERN_INFO PREFIX str, ##args)
+#define STK_ERROR(str, args...) printk(KERN_ERR PREFIX str, ##args)
+#define STK_WARNING(str, args...) printk(KERN_WARNING PREFIX str, ##args)
+
+struct stk_iso_buf {
+ void *data;
+ int length;
+ int read;
+ struct urb *urb;
+};
+
+/* Streaming IO buffers */
+struct stk_sio_buffer {
+ struct v4l2_buffer v4lbuf;
+ char *buffer;
+ int mapcount;
+ struct stk_camera *dev;
+ struct list_head list;
+};
+
+enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF};
+
+struct stk_video {
+ enum stk_mode mode;
+ int brightness;
+ __u32 palette;
+ int hflip;
+ int vflip;
+};
+
+enum stk_status {
+ S_PRESENT = 1,
+ S_INITIALISED = 2,
+ S_MEMALLOCD = 4,
+ S_STREAMING = 8,
+};
+#define is_present(dev) ((dev)->status & S_PRESENT)
+#define is_initialised(dev) ((dev)->status & S_INITIALISED)
+#define is_streaming(dev) ((dev)->status & S_STREAMING)
+#define is_memallocd(dev) ((dev)->status & S_MEMALLOCD)
+#define set_present(dev) ((dev)->status = S_PRESENT)
+#define unset_present(dev) ((dev)->status &= \
+ ~(S_PRESENT|S_INITIALISED|S_STREAMING))
+#define set_initialised(dev) ((dev)->status |= S_INITIALISED)
+#define unset_initialised(dev) ((dev)->status &= ~S_INITIALISED)
+#define set_memallocd(dev) ((dev)->status |= S_MEMALLOCD)
+#define unset_memallocd(dev) ((dev)->status &= ~S_MEMALLOCD)
+#define set_streaming(dev) ((dev)->status |= S_STREAMING)
+#define unset_streaming(dev) ((dev)->status &= ~S_STREAMING)
+
+struct regval {
+ unsigned reg;
+ unsigned val;
+};
+
+struct stk_camera {
+ struct video_device vdev;
+ struct usb_device *udev;
+ struct usb_interface *interface;
+ int webcam_model;
+ struct file *owner;
+
+ u8 isoc_ep;
+
+ /* Not sure if this is right */
+ atomic_t urbs_used;
+
+ struct stk_video vsettings;
+
+ enum stk_status status;
+
+ spinlock_t spinlock;
+ wait_queue_head_t wait_frame;
+
+ struct stk_iso_buf *isobufs;
+
+ int frame_size;
+ /* Streaming buffers */
+ unsigned int n_sbufs;
+ struct stk_sio_buffer *sio_bufs;
+ struct list_head sio_avail;
+ struct list_head sio_full;
+ unsigned sequence;
+};
+
+#define vdev_to_camera(d) container_of(d, struct stk_camera, vdev)
+
+int stk_camera_write_reg(struct stk_camera *, u16, u8);
+int stk_camera_read_reg(struct stk_camera *, u16, int *);
+
+int stk_sensor_init(struct stk_camera *);
+int stk_sensor_configure(struct stk_camera *);
+int stk_sensor_sleep(struct stk_camera *dev);
+int stk_sensor_wakeup(struct stk_camera *dev);
+int stk_sensor_set_brightness(struct stk_camera *dev, int br);
+
+#endif
diff --git a/drivers/media/usb/zr364xx/Kconfig b/drivers/media/usb/zr364xx/Kconfig
new file mode 100644
index 00000000000..0f585662881
--- /dev/null
+++ b/drivers/media/usb/zr364xx/Kconfig
@@ -0,0 +1,14 @@
+config USB_ZR364XX
+ tristate "USB ZR364XX Camera support"
+ depends on VIDEO_V4L2
+ select VIDEOBUF_GEN
+ select VIDEOBUF_VMALLOC
+ ---help---
+ Say Y here if you want to connect this type of camera to your
+ computer's USB port.
+ See <file:Documentation/video4linux/zr364xx.txt> for more info
+ and list of supported cameras.
+
+ To compile this driver as a module, choose M here: the
+ module will be called zr364xx.
+
diff --git a/drivers/media/usb/zr364xx/Makefile b/drivers/media/usb/zr364xx/Makefile
new file mode 100644
index 00000000000..a5777883a1f
--- /dev/null
+++ b/drivers/media/usb/zr364xx/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_USB_ZR364XX) += zr364xx.o
+
diff --git a/drivers/media/usb/zr364xx/zr364xx.c b/drivers/media/usb/zr364xx/zr364xx.c
new file mode 100644
index 00000000000..9afab35878b
--- /dev/null
+++ b/drivers/media/usb/zr364xx/zr364xx.c
@@ -0,0 +1,1643 @@
+/*
+ * Zoran 364xx based USB webcam module version 0.73
+ *
+ * Allows you to use your USB webcam with V4L2 applications
+ * This is still in heavy developpement !
+ *
+ * Copyright (C) 2004 Antoine Jacquet <royale@zerezo.com>
+ * http://royale.zerezo.com/zr364xx/
+ *
+ * Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers
+ * V4L2 version inspired by meye.c driver
+ *
+ * Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/highmem.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf-vmalloc.h>
+
+
+/* Version Information */
+#define DRIVER_VERSION "0.7.4"
+#define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/"
+#define DRIVER_DESC "Zoran 364xx"
+
+
+/* Camera */
+#define FRAMES 1
+#define MAX_FRAME_SIZE 200000
+#define BUFFER_SIZE 0x1000
+#define CTRL_TIMEOUT 500
+
+#define ZR364XX_DEF_BUFS 4
+#define ZR364XX_READ_IDLE 0
+#define ZR364XX_READ_FRAME 1
+
+/* Debug macro */
+#define DBG(fmt, args...) \
+ do { \
+ if (debug) { \
+ printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \
+ } \
+ } while (0)
+
+/*#define FULL_DEBUG 1*/
+#ifdef FULL_DEBUG
+#define _DBG DBG
+#else
+#define _DBG(fmt, args...)
+#endif
+
+/* Init methods, need to find nicer names for these
+ * the exact names of the chipsets would be the best if someone finds it */
+#define METHOD0 0
+#define METHOD1 1
+#define METHOD2 2
+#define METHOD3 3
+
+
+/* Module parameters */
+static int debug;
+static int mode;
+
+
+/* Module parameters interface */
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level");
+module_param(mode, int, 0644);
+MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480");
+
+
+/* Devices supported by this driver
+ * .driver_info contains the init method used by the camera */
+static struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 },
+ {USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 },
+ {USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 },
+ {USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 },
+ {USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 },
+ {USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 },
+ {USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 },
+ {USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 },
+ {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 },
+ {USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 },
+ {USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 },
+ {USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 },
+ {USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 },
+ {} /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* frame structure */
+struct zr364xx_framei {
+ unsigned long ulState; /* ulState:ZR364XX_READ_IDLE,
+ ZR364XX_READ_FRAME */
+ void *lpvbits; /* image data */
+ unsigned long cur_size; /* current data copied to it */
+};
+
+/* image buffer structure */
+struct zr364xx_bufferi {
+ unsigned long dwFrames; /* number of frames in buffer */
+ struct zr364xx_framei frame[FRAMES]; /* array of FRAME structures */
+};
+
+struct zr364xx_dmaqueue {
+ struct list_head active;
+ struct zr364xx_camera *cam;
+};
+
+struct zr364xx_pipeinfo {
+ u32 transfer_size;
+ u8 *transfer_buffer;
+ u32 state;
+ void *stream_urb;
+ void *cam; /* back pointer to zr364xx_camera struct */
+ u32 err_count;
+ u32 idx;
+};
+
+struct zr364xx_fmt {
+ char *name;
+ u32 fourcc;
+ int depth;
+};
+
+/* image formats. */
+static const struct zr364xx_fmt formats[] = {
+ {
+ .name = "JPG",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .depth = 24
+ }
+};
+
+/* Camera stuff */
+struct zr364xx_camera {
+ struct usb_device *udev; /* save off the usb device pointer */
+ struct usb_interface *interface;/* the interface for this device */
+ struct v4l2_device v4l2_dev;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct video_device vdev; /* v4l video device */
+ struct v4l2_fh *owner; /* owns the streaming */
+ int nb;
+ struct zr364xx_bufferi buffer;
+ int skip;
+ int width;
+ int height;
+ int method;
+ struct mutex lock;
+
+ spinlock_t slock;
+ struct zr364xx_dmaqueue vidq;
+ int last_frame;
+ int cur_frame;
+ unsigned long frame_count;
+ int b_acquire;
+ struct zr364xx_pipeinfo pipe[1];
+
+ u8 read_endpoint;
+
+ const struct zr364xx_fmt *fmt;
+ struct videobuf_queue vb_vidq;
+ bool was_streaming;
+};
+
+/* buffer for one video frame */
+struct zr364xx_buffer {
+ /* common v4l buffer stuff -- must be first */
+ struct videobuf_buffer vb;
+ const struct zr364xx_fmt *fmt;
+};
+
+/* function used to send initialisation commands to the camera */
+static int send_control_msg(struct usb_device *udev, u8 request, u16 value,
+ u16 index, unsigned char *cp, u16 size)
+{
+ int status;
+
+ unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL);
+ if (!transfer_buffer) {
+ dev_err(&udev->dev, "kmalloc(%d) failed\n", size);
+ return -ENOMEM;
+ }
+
+ memcpy(transfer_buffer, cp, size);
+
+ status = usb_control_msg(udev,
+ usb_sndctrlpipe(udev, 0),
+ request,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, value, index,
+ transfer_buffer, size, CTRL_TIMEOUT);
+
+ kfree(transfer_buffer);
+ return status;
+}
+
+
+/* Control messages sent to the camera to initialize it
+ * and launch the capture */
+typedef struct {
+ unsigned int value;
+ unsigned int size;
+ unsigned char *bytes;
+} message;
+
+/* method 0 */
+static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 };
+static unsigned char m0d3[] = { 0, 0 };
+static message m0[] = {
+ {0x1f30, 0, NULL},
+ {0xd000, 0, NULL},
+ {0x3370, sizeof(m0d1), m0d1},
+ {0x2000, 0, NULL},
+ {0x2f0f, 0, NULL},
+ {0x2610, sizeof(m0d2), m0d2},
+ {0xe107, 0, NULL},
+ {0x2502, 0, NULL},
+ {0x1f70, 0, NULL},
+ {0xd000, 0, NULL},
+ {0x9a01, sizeof(m0d3), m0d3},
+ {-1, -1, NULL}
+};
+
+/* method 1 */
+static unsigned char m1d1[] = { 0xff, 0xff };
+static unsigned char m1d2[] = { 0x00, 0x00 };
+static message m1[] = {
+ {0x1f30, 0, NULL},
+ {0xd000, 0, NULL},
+ {0xf000, 0, NULL},
+ {0x2000, 0, NULL},
+ {0x2f0f, 0, NULL},
+ {0x2650, 0, NULL},
+ {0xe107, 0, NULL},
+ {0x2502, sizeof(m1d1), m1d1},
+ {0x1f70, 0, NULL},
+ {0xd000, 0, NULL},
+ {0xd000, 0, NULL},
+ {0xd000, 0, NULL},
+ {0x9a01, sizeof(m1d2), m1d2},
+ {-1, -1, NULL}
+};
+
+/* method 2 */
+static unsigned char m2d1[] = { 0xff, 0xff };
+static message m2[] = {
+ {0x1f30, 0, NULL},
+ {0xf000, 0, NULL},
+ {0x2000, 0, NULL},
+ {0x2f0f, 0, NULL},
+ {0x2650, 0, NULL},
+ {0xe107, 0, NULL},
+ {0x2502, sizeof(m2d1), m2d1},
+ {0x1f70, 0, NULL},
+ {-1, -1, NULL}
+};
+
+/* init table */
+static message *init[4] = { m0, m1, m2, m2 };
+
+
+/* JPEG static data in header (Huffman table, etc) */
+static unsigned char header1[] = {
+ 0xFF, 0xD8,
+ /*
+ 0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F',
+ 0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88,
+ */
+ 0xFF, 0xDB, 0x00, 0x84
+};
+static unsigned char header2[] = {
+ 0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
+ 0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02,
+ 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
+ 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06,
+ 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1,
+ 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33,
+ 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25,
+ 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
+ 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54,
+ 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A,
+ 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94,
+ 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
+ 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8,
+ 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA,
+ 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2,
+ 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
+ 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F,
+ 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04,
+ 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5,
+ 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
+ 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11,
+ 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
+ 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1,
+ 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
+ 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27,
+ 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
+ 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57,
+ 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
+ 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84,
+ 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96,
+ 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+ 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA,
+ 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3,
+ 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5,
+ 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+ 0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01,
+ 0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01,
+ 0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11,
+ 0x00, 0x3F, 0x00
+};
+static unsigned char header3;
+
+/* ------------------------------------------------------------------
+ Videobuf operations
+ ------------------------------------------------------------------*/
+
+static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
+ unsigned int *size)
+{
+ struct zr364xx_camera *cam = vq->priv_data;
+
+ *size = cam->width * cam->height * (cam->fmt->depth >> 3);
+
+ if (*count == 0)
+ *count = ZR364XX_DEF_BUFS;
+
+ if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024)
+ *count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size;
+
+ return 0;
+}
+
+static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf)
+{
+ _DBG("%s\n", __func__);
+
+ if (in_interrupt())
+ BUG();
+
+ videobuf_vmalloc_free(&buf->vb);
+ buf->vb.state = VIDEOBUF_NEEDS_INIT;
+}
+
+static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct zr364xx_camera *cam = vq->priv_data;
+ struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer,
+ vb);
+ int rc;
+
+ DBG("%s, field=%d, fmt name = %s\n", __func__, field, cam->fmt != NULL ?
+ cam->fmt->name : "");
+ if (cam->fmt == NULL)
+ return -EINVAL;
+
+ buf->vb.size = cam->width * cam->height * (cam->fmt->depth >> 3);
+
+ if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) {
+ DBG("invalid buffer prepare\n");
+ return -EINVAL;
+ }
+
+ buf->fmt = cam->fmt;
+ buf->vb.width = cam->width;
+ buf->vb.height = cam->height;
+ buf->vb.field = field;
+
+ if (buf->vb.state == VIDEOBUF_NEEDS_INIT) {
+ rc = videobuf_iolock(vq, &buf->vb, NULL);
+ if (rc < 0)
+ goto fail;
+ }
+
+ buf->vb.state = VIDEOBUF_PREPARED;
+ return 0;
+fail:
+ free_buffer(vq, buf);
+ return rc;
+}
+
+static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
+{
+ struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer,
+ vb);
+ struct zr364xx_camera *cam = vq->priv_data;
+
+ _DBG("%s\n", __func__);
+
+ buf->vb.state = VIDEOBUF_QUEUED;
+ list_add_tail(&buf->vb.queue, &cam->vidq.active);
+}
+
+static void buffer_release(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
+{
+ struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer,
+ vb);
+
+ _DBG("%s\n", __func__);
+ free_buffer(vq, buf);
+}
+
+static struct videobuf_queue_ops zr364xx_video_qops = {
+ .buf_setup = buffer_setup,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .buf_release = buffer_release,
+};
+
+/********************/
+/* V4L2 integration */
+/********************/
+static int zr364xx_vidioc_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type);
+
+static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count,
+ loff_t * ppos)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+ int err = 0;
+
+ _DBG("%s\n", __func__);
+
+ if (!buf)
+ return -EINVAL;
+
+ if (!count)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&cam->lock))
+ return -ERESTARTSYS;
+
+ err = zr364xx_vidioc_streamon(file, file->private_data,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (err == 0) {
+ DBG("%s: reading %d bytes at pos %d.\n", __func__,
+ (int) count, (int) *ppos);
+
+ /* NoMan Sux ! */
+ err = videobuf_read_one(&cam->vb_vidq, buf, count, ppos,
+ file->f_flags & O_NONBLOCK);
+ }
+ mutex_unlock(&cam->lock);
+ return err;
+}
+
+/* video buffer vmalloc implementation based partly on VIVI driver which is
+ * Copyright (c) 2006 by
+ * Mauro Carvalho Chehab <mchehab--a.t--infradead.org>
+ * Ted Walther <ted--a.t--enumera.com>
+ * John Sokol <sokol--a.t--videotechnology.com>
+ * http://v4l.videotechnology.com/
+ *
+ */
+static void zr364xx_fillbuff(struct zr364xx_camera *cam,
+ struct zr364xx_buffer *buf,
+ int jpgsize)
+{
+ int pos = 0;
+ struct timeval ts;
+ const char *tmpbuf;
+ char *vbuf = videobuf_to_vmalloc(&buf->vb);
+ unsigned long last_frame;
+
+ if (!vbuf)
+ return;
+
+ last_frame = cam->last_frame;
+ if (last_frame != -1) {
+ tmpbuf = (const char *)cam->buffer.frame[last_frame].lpvbits;
+ switch (buf->fmt->fourcc) {
+ case V4L2_PIX_FMT_JPEG:
+ buf->vb.size = jpgsize;
+ memcpy(vbuf, tmpbuf, buf->vb.size);
+ break;
+ default:
+ printk(KERN_DEBUG KBUILD_MODNAME ": unknown format?\n");
+ }
+ cam->last_frame = -1;
+ } else {
+ printk(KERN_ERR KBUILD_MODNAME ": =======no frame\n");
+ return;
+ }
+ DBG("%s: Buffer 0x%08lx size= %d\n", __func__,
+ (unsigned long)vbuf, pos);
+ /* tell v4l buffer was filled */
+
+ buf->vb.field_count = cam->frame_count * 2;
+ do_gettimeofday(&ts);
+ buf->vb.ts = ts;
+ buf->vb.state = VIDEOBUF_DONE;
+}
+
+static int zr364xx_got_frame(struct zr364xx_camera *cam, int jpgsize)
+{
+ struct zr364xx_dmaqueue *dma_q = &cam->vidq;
+ struct zr364xx_buffer *buf;
+ unsigned long flags = 0;
+ int rc = 0;
+
+ DBG("wakeup: %p\n", &dma_q);
+ spin_lock_irqsave(&cam->slock, flags);
+
+ if (list_empty(&dma_q->active)) {
+ DBG("No active queue to serve\n");
+ rc = -1;
+ goto unlock;
+ }
+ buf = list_entry(dma_q->active.next,
+ struct zr364xx_buffer, vb.queue);
+
+ if (!waitqueue_active(&buf->vb.done)) {
+ /* no one active */
+ rc = -1;
+ goto unlock;
+ }
+ list_del(&buf->vb.queue);
+ do_gettimeofday(&buf->vb.ts);
+ DBG("[%p/%d] wakeup\n", buf, buf->vb.i);
+ zr364xx_fillbuff(cam, buf, jpgsize);
+ wake_up(&buf->vb.done);
+ DBG("wakeup [buf/i] [%p/%d]\n", buf, buf->vb.i);
+unlock:
+ spin_unlock_irqrestore(&cam->slock, flags);
+ return rc;
+}
+
+/* this function moves the usb stream read pipe data
+ * into the system buffers.
+ * returns 0 on success, EAGAIN if more data to process (call this
+ * function again).
+ */
+static int zr364xx_read_video_callback(struct zr364xx_camera *cam,
+ struct zr364xx_pipeinfo *pipe_info,
+ struct urb *purb)
+{
+ unsigned char *pdest;
+ unsigned char *psrc;
+ s32 idx = -1;
+ struct zr364xx_framei *frm;
+ int i = 0;
+ unsigned char *ptr = NULL;
+
+ _DBG("buffer to user\n");
+ idx = cam->cur_frame;
+ frm = &cam->buffer.frame[idx];
+
+ /* swap bytes if camera needs it */
+ if (cam->method == METHOD0) {
+ u16 *buf = (u16 *)pipe_info->transfer_buffer;
+ for (i = 0; i < purb->actual_length/2; i++)
+ swab16s(buf + i);
+ }
+
+ /* search done. now find out if should be acquiring */
+ if (!cam->b_acquire) {
+ /* we found a frame, but this channel is turned off */
+ frm->ulState = ZR364XX_READ_IDLE;
+ return -EINVAL;
+ }
+
+ psrc = (u8 *)pipe_info->transfer_buffer;
+ ptr = pdest = frm->lpvbits;
+
+ if (frm->ulState == ZR364XX_READ_IDLE) {
+ frm->ulState = ZR364XX_READ_FRAME;
+ frm->cur_size = 0;
+
+ _DBG("jpeg header, ");
+ memcpy(ptr, header1, sizeof(header1));
+ ptr += sizeof(header1);
+ header3 = 0;
+ memcpy(ptr, &header3, 1);
+ ptr++;
+ memcpy(ptr, psrc, 64);
+ ptr += 64;
+ header3 = 1;
+ memcpy(ptr, &header3, 1);
+ ptr++;
+ memcpy(ptr, psrc + 64, 64);
+ ptr += 64;
+ memcpy(ptr, header2, sizeof(header2));
+ ptr += sizeof(header2);
+ memcpy(ptr, psrc + 128,
+ purb->actual_length - 128);
+ ptr += purb->actual_length - 128;
+ _DBG("header : %d %d %d %d %d %d %d %d %d\n",
+ psrc[0], psrc[1], psrc[2],
+ psrc[3], psrc[4], psrc[5],
+ psrc[6], psrc[7], psrc[8]);
+ frm->cur_size = ptr - pdest;
+ } else {
+ if (frm->cur_size + purb->actual_length > MAX_FRAME_SIZE) {
+ dev_info(&cam->udev->dev,
+ "%s: buffer (%d bytes) too small to hold "
+ "frame data. Discarding frame data.\n",
+ __func__, MAX_FRAME_SIZE);
+ } else {
+ pdest += frm->cur_size;
+ memcpy(pdest, psrc, purb->actual_length);
+ frm->cur_size += purb->actual_length;
+ }
+ }
+ /*_DBG("cur_size %lu urb size %d\n", frm->cur_size,
+ purb->actual_length);*/
+
+ if (purb->actual_length < pipe_info->transfer_size) {
+ _DBG("****************Buffer[%d]full*************\n", idx);
+ cam->last_frame = cam->cur_frame;
+ cam->cur_frame++;
+ /* end of system frame ring buffer, start at zero */
+ if (cam->cur_frame == cam->buffer.dwFrames)
+ cam->cur_frame = 0;
+
+ /* frame ready */
+ /* go back to find the JPEG EOI marker */
+ ptr = pdest = frm->lpvbits;
+ ptr += frm->cur_size - 2;
+ while (ptr > pdest) {
+ if (*ptr == 0xFF && *(ptr + 1) == 0xD9
+ && *(ptr + 2) == 0xFF)
+ break;
+ ptr--;
+ }
+ if (ptr == pdest)
+ DBG("No EOI marker\n");
+
+ /* Sometimes there is junk data in the middle of the picture,
+ * we want to skip this bogus frames */
+ while (ptr > pdest) {
+ if (*ptr == 0xFF && *(ptr + 1) == 0xFF
+ && *(ptr + 2) == 0xFF)
+ break;
+ ptr--;
+ }
+ if (ptr != pdest) {
+ DBG("Bogus frame ? %d\n", ++(cam->nb));
+ } else if (cam->b_acquire) {
+ /* we skip the 2 first frames which are usually buggy */
+ if (cam->skip)
+ cam->skip--;
+ else {
+ _DBG("jpeg(%lu): %d %d %d %d %d %d %d %d\n",
+ frm->cur_size,
+ pdest[0], pdest[1], pdest[2], pdest[3],
+ pdest[4], pdest[5], pdest[6], pdest[7]);
+
+ zr364xx_got_frame(cam, frm->cur_size);
+ }
+ }
+ cam->frame_count++;
+ frm->ulState = ZR364XX_READ_IDLE;
+ frm->cur_size = 0;
+ }
+ /* done successfully */
+ return 0;
+}
+
+static int zr364xx_vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+
+ strlcpy(cap->driver, DRIVER_DESC, sizeof(cap->driver));
+ strlcpy(cap->card, cam->udev->product, sizeof(cap->card));
+ strlcpy(cap->bus_info, dev_name(&cam->udev->dev),
+ sizeof(cap->bus_info));
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_READWRITE |
+ V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+}
+
+static int zr364xx_vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ if (i->index != 0)
+ return -EINVAL;
+ strcpy(i->name, DRIVER_DESC " Camera");
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+ return 0;
+}
+
+static int zr364xx_vidioc_g_input(struct file *file, void *priv,
+ unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int zr364xx_vidioc_s_input(struct file *file, void *priv,
+ unsigned int i)
+{
+ if (i != 0)
+ return -EINVAL;
+ return 0;
+}
+
+static int zr364xx_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct zr364xx_camera *cam =
+ container_of(ctrl->handler, struct zr364xx_camera, ctrl_handler);
+ int temp;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ /* hardware brightness */
+ send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0);
+ temp = (0x60 << 8) + 127 - ctrl->val;
+ send_control_msg(cam->udev, 1, temp, 0, NULL, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file,
+ void *priv, struct v4l2_fmtdesc *f)
+{
+ if (f->index > 0)
+ return -EINVAL;
+ f->flags = V4L2_FMT_FLAG_COMPRESSED;
+ strcpy(f->description, formats[0].name);
+ f->pixelformat = formats[0].fourcc;
+ return 0;
+}
+
+static char *decode_fourcc(__u32 pixelformat, char *buf)
+{
+ buf[0] = pixelformat & 0xff;
+ buf[1] = (pixelformat >> 8) & 0xff;
+ buf[2] = (pixelformat >> 16) & 0xff;
+ buf[3] = (pixelformat >> 24) & 0xff;
+ buf[4] = '\0';
+ return buf;
+}
+
+static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+ char pixelformat_name[5];
+
+ if (cam == NULL)
+ return -ENODEV;
+
+ if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) {
+ DBG("%s: unsupported pixelformat V4L2_PIX_FMT_%s\n", __func__,
+ decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name));
+ return -EINVAL;
+ }
+
+ if (!(f->fmt.pix.width == 160 && f->fmt.pix.height == 120) &&
+ !(f->fmt.pix.width == 640 && f->fmt.pix.height == 480)) {
+ f->fmt.pix.width = 320;
+ f->fmt.pix.height = 240;
+ }
+
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+ f->fmt.pix.priv = 0;
+ DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__,
+ decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name),
+ f->fmt.pix.field);
+ return 0;
+}
+
+static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct zr364xx_camera *cam;
+
+ if (file == NULL)
+ return -ENODEV;
+ cam = video_drvdata(file);
+
+ f->fmt.pix.pixelformat = formats[0].fourcc;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.width = cam->width;
+ f->fmt.pix.height = cam->height;
+ f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+ f->fmt.pix.priv = 0;
+ return 0;
+}
+
+static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+ struct videobuf_queue *q = &cam->vb_vidq;
+ char pixelformat_name[5];
+ int ret = zr364xx_vidioc_try_fmt_vid_cap(file, cam, f);
+ int i;
+
+ if (ret < 0)
+ return ret;
+
+ mutex_lock(&q->vb_lock);
+
+ if (videobuf_queue_is_busy(&cam->vb_vidq)) {
+ DBG("%s queue busy\n", __func__);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ if (cam->owner) {
+ DBG("%s can't change format after started\n", __func__);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ cam->width = f->fmt.pix.width;
+ cam->height = f->fmt.pix.height;
+ DBG("%s: %dx%d mode selected\n", __func__,
+ cam->width, cam->height);
+ f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+ f->fmt.pix.priv = 0;
+ cam->vb_vidq.field = f->fmt.pix.field;
+
+ if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120)
+ mode = 1;
+ else if (f->fmt.pix.width == 640 && f->fmt.pix.height == 480)
+ mode = 2;
+ else
+ mode = 0;
+
+ m0d1[0] = mode;
+ m1[2].value = 0xf000 + mode;
+ m2[1].value = 0xf000 + mode;
+
+ /* special case for METHOD3, the modes are different */
+ if (cam->method == METHOD3) {
+ switch (mode) {
+ case 1:
+ m2[1].value = 0xf000 + 4;
+ break;
+ case 2:
+ m2[1].value = 0xf000 + 0;
+ break;
+ default:
+ m2[1].value = 0xf000 + 1;
+ break;
+ }
+ }
+
+ header2[437] = cam->height / 256;
+ header2[438] = cam->height % 256;
+ header2[439] = cam->width / 256;
+ header2[440] = cam->width % 256;
+
+ for (i = 0; init[cam->method][i].size != -1; i++) {
+ ret =
+ send_control_msg(cam->udev, 1, init[cam->method][i].value,
+ 0, init[cam->method][i].bytes,
+ init[cam->method][i].size);
+ if (ret < 0) {
+ dev_err(&cam->udev->dev,
+ "error during resolution change sequence: %d\n", i);
+ goto out;
+ }
+ }
+
+ /* Added some delay here, since opening/closing the camera quickly,
+ * like Ekiga does during its startup, can crash the webcam
+ */
+ mdelay(100);
+ cam->skip = 2;
+ ret = 0;
+
+out:
+ mutex_unlock(&q->vb_lock);
+
+ DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__,
+ decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name),
+ f->fmt.pix.field);
+ return ret;
+}
+
+static int zr364xx_vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *p)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
+ return videobuf_reqbufs(&cam->vb_vidq, p);
+}
+
+static int zr364xx_vidioc_querybuf(struct file *file,
+ void *priv,
+ struct v4l2_buffer *p)
+{
+ int rc;
+ struct zr364xx_camera *cam = video_drvdata(file);
+ rc = videobuf_querybuf(&cam->vb_vidq, p);
+ return rc;
+}
+
+static int zr364xx_vidioc_qbuf(struct file *file,
+ void *priv,
+ struct v4l2_buffer *p)
+{
+ int rc;
+ struct zr364xx_camera *cam = video_drvdata(file);
+ _DBG("%s\n", __func__);
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
+ rc = videobuf_qbuf(&cam->vb_vidq, p);
+ return rc;
+}
+
+static int zr364xx_vidioc_dqbuf(struct file *file,
+ void *priv,
+ struct v4l2_buffer *p)
+{
+ int rc;
+ struct zr364xx_camera *cam = video_drvdata(file);
+ _DBG("%s\n", __func__);
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
+ rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK);
+ return rc;
+}
+
+static void read_pipe_completion(struct urb *purb)
+{
+ struct zr364xx_pipeinfo *pipe_info;
+ struct zr364xx_camera *cam;
+ int pipe;
+
+ pipe_info = purb->context;
+ _DBG("%s %p, status %d\n", __func__, purb, purb->status);
+ if (pipe_info == NULL) {
+ printk(KERN_ERR KBUILD_MODNAME ": no context!\n");
+ return;
+ }
+
+ cam = pipe_info->cam;
+ if (cam == NULL) {
+ printk(KERN_ERR KBUILD_MODNAME ": no context!\n");
+ return;
+ }
+
+ /* if shutting down, do not resubmit, exit immediately */
+ if (purb->status == -ESHUTDOWN) {
+ DBG("%s, err shutdown\n", __func__);
+ pipe_info->err_count++;
+ return;
+ }
+
+ if (pipe_info->state == 0) {
+ DBG("exiting USB pipe\n");
+ return;
+ }
+
+ if (purb->actual_length < 0 ||
+ purb->actual_length > pipe_info->transfer_size) {
+ dev_err(&cam->udev->dev, "wrong number of bytes\n");
+ return;
+ }
+
+ if (purb->status == 0)
+ zr364xx_read_video_callback(cam, pipe_info, purb);
+ else {
+ pipe_info->err_count++;
+ DBG("%s: failed URB %d\n", __func__, purb->status);
+ }
+
+ pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint);
+
+ /* reuse urb */
+ usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev,
+ pipe,
+ pipe_info->transfer_buffer,
+ pipe_info->transfer_size,
+ read_pipe_completion, pipe_info);
+
+ if (pipe_info->state != 0) {
+ purb->status = usb_submit_urb(pipe_info->stream_urb,
+ GFP_ATOMIC);
+
+ if (purb->status)
+ dev_err(&cam->udev->dev,
+ "error submitting urb (error=%i)\n",
+ purb->status);
+ } else
+ DBG("read pipe complete state 0\n");
+}
+
+static int zr364xx_start_readpipe(struct zr364xx_camera *cam)
+{
+ int pipe;
+ int retval;
+ struct zr364xx_pipeinfo *pipe_info = cam->pipe;
+ pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint);
+ DBG("%s: start pipe IN x%x\n", __func__, cam->read_endpoint);
+
+ pipe_info->state = 1;
+ pipe_info->err_count = 0;
+ pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!pipe_info->stream_urb) {
+ dev_err(&cam->udev->dev, "ReadStream: Unable to alloc URB\n");
+ return -ENOMEM;
+ }
+ /* transfer buffer allocated in board_init */
+ usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev,
+ pipe,
+ pipe_info->transfer_buffer,
+ pipe_info->transfer_size,
+ read_pipe_completion, pipe_info);
+
+ DBG("submitting URB %p\n", pipe_info->stream_urb);
+ retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL);
+ if (retval) {
+ printk(KERN_ERR KBUILD_MODNAME ": start read pipe failed\n");
+ return retval;
+ }
+
+ return 0;
+}
+
+static void zr364xx_stop_readpipe(struct zr364xx_camera *cam)
+{
+ struct zr364xx_pipeinfo *pipe_info;
+
+ if (cam == NULL) {
+ printk(KERN_ERR KBUILD_MODNAME ": invalid device\n");
+ return;
+ }
+ DBG("stop read pipe\n");
+ pipe_info = cam->pipe;
+ if (pipe_info) {
+ if (pipe_info->state != 0)
+ pipe_info->state = 0;
+
+ if (pipe_info->stream_urb) {
+ /* cancel urb */
+ usb_kill_urb(pipe_info->stream_urb);
+ usb_free_urb(pipe_info->stream_urb);
+ pipe_info->stream_urb = NULL;
+ }
+ }
+ return;
+}
+
+/* starts acquisition process */
+static int zr364xx_start_acquire(struct zr364xx_camera *cam)
+{
+ int j;
+
+ DBG("start acquire\n");
+
+ cam->last_frame = -1;
+ cam->cur_frame = 0;
+ for (j = 0; j < FRAMES; j++) {
+ cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE;
+ cam->buffer.frame[j].cur_size = 0;
+ }
+ cam->b_acquire = 1;
+ return 0;
+}
+
+static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam)
+{
+ cam->b_acquire = 0;
+ return 0;
+}
+
+static int zr364xx_prepare(struct zr364xx_camera *cam)
+{
+ int res;
+ int i, j;
+
+ for (i = 0; init[cam->method][i].size != -1; i++) {
+ res = send_control_msg(cam->udev, 1, init[cam->method][i].value,
+ 0, init[cam->method][i].bytes,
+ init[cam->method][i].size);
+ if (res < 0) {
+ dev_err(&cam->udev->dev,
+ "error during open sequence: %d\n", i);
+ return res;
+ }
+ }
+
+ cam->skip = 2;
+ cam->last_frame = -1;
+ cam->cur_frame = 0;
+ cam->frame_count = 0;
+ for (j = 0; j < FRAMES; j++) {
+ cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE;
+ cam->buffer.frame[j].cur_size = 0;
+ }
+ v4l2_ctrl_handler_setup(&cam->ctrl_handler);
+ return 0;
+}
+
+static int zr364xx_vidioc_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+ int res;
+
+ DBG("%s\n", __func__);
+
+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
+
+ res = zr364xx_prepare(cam);
+ if (res)
+ return res;
+ res = videobuf_streamon(&cam->vb_vidq);
+ if (res == 0) {
+ zr364xx_start_acquire(cam);
+ cam->owner = file->private_data;
+ }
+ return res;
+}
+
+static int zr364xx_vidioc_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+
+ DBG("%s\n", __func__);
+ if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (cam->owner && cam->owner != priv)
+ return -EBUSY;
+ zr364xx_stop_acquire(cam);
+ return videobuf_streamoff(&cam->vb_vidq);
+}
+
+
+/* open the camera */
+static int zr364xx_open(struct file *file)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+ int err;
+
+ DBG("%s\n", __func__);
+
+ if (mutex_lock_interruptible(&cam->lock))
+ return -ERESTARTSYS;
+
+ err = v4l2_fh_open(file);
+ if (err)
+ goto out;
+
+ /* Added some delay here, since opening/closing the camera quickly,
+ * like Ekiga does during its startup, can crash the webcam
+ */
+ mdelay(100);
+ err = 0;
+
+out:
+ mutex_unlock(&cam->lock);
+ DBG("%s: %d\n", __func__, err);
+ return err;
+}
+
+static void zr364xx_release(struct v4l2_device *v4l2_dev)
+{
+ struct zr364xx_camera *cam =
+ container_of(v4l2_dev, struct zr364xx_camera, v4l2_dev);
+ unsigned long i;
+
+ v4l2_device_unregister(&cam->v4l2_dev);
+
+ videobuf_mmap_free(&cam->vb_vidq);
+
+ /* release sys buffers */
+ for (i = 0; i < FRAMES; i++) {
+ if (cam->buffer.frame[i].lpvbits) {
+ DBG("vfree %p\n", cam->buffer.frame[i].lpvbits);
+ vfree(cam->buffer.frame[i].lpvbits);
+ }
+ cam->buffer.frame[i].lpvbits = NULL;
+ }
+
+ v4l2_ctrl_handler_free(&cam->ctrl_handler);
+ /* release transfer buffer */
+ kfree(cam->pipe->transfer_buffer);
+ kfree(cam);
+}
+
+/* release the camera */
+static int zr364xx_close(struct file *file)
+{
+ struct zr364xx_camera *cam;
+ struct usb_device *udev;
+ int i;
+
+ DBG("%s\n", __func__);
+ cam = video_drvdata(file);
+
+ mutex_lock(&cam->lock);
+ udev = cam->udev;
+
+ if (file->private_data == cam->owner) {
+ /* turn off stream */
+ if (cam->b_acquire)
+ zr364xx_stop_acquire(cam);
+ videobuf_streamoff(&cam->vb_vidq);
+
+ for (i = 0; i < 2; i++) {
+ send_control_msg(udev, 1, init[cam->method][i].value,
+ 0, init[cam->method][i].bytes,
+ init[cam->method][i].size);
+ }
+ cam->owner = NULL;
+ }
+
+ /* Added some delay here, since opening/closing the camera quickly,
+ * like Ekiga does during its startup, can crash the webcam
+ */
+ mdelay(100);
+ mutex_unlock(&cam->lock);
+ return v4l2_fh_release(file);
+}
+
+
+static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+ int ret;
+
+ if (cam == NULL) {
+ DBG("%s: cam == NULL\n", __func__);
+ return -ENODEV;
+ }
+ DBG("mmap called, vma=0x%08lx\n", (unsigned long)vma);
+
+ ret = videobuf_mmap_mapper(&cam->vb_vidq, vma);
+
+ DBG("vma start=0x%08lx, size=%ld, ret=%d\n",
+ (unsigned long)vma->vm_start,
+ (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret);
+ return ret;
+}
+
+static unsigned int zr364xx_poll(struct file *file,
+ struct poll_table_struct *wait)
+{
+ struct zr364xx_camera *cam = video_drvdata(file);
+ struct videobuf_queue *q = &cam->vb_vidq;
+ unsigned res = v4l2_ctrl_poll(file, wait);
+
+ _DBG("%s\n", __func__);
+
+ return res | videobuf_poll_stream(file, q, wait);
+}
+
+static const struct v4l2_ctrl_ops zr364xx_ctrl_ops = {
+ .s_ctrl = zr364xx_s_ctrl,
+};
+
+static const struct v4l2_file_operations zr364xx_fops = {
+ .owner = THIS_MODULE,
+ .open = zr364xx_open,
+ .release = zr364xx_close,
+ .read = zr364xx_read,
+ .mmap = zr364xx_mmap,
+ .unlocked_ioctl = video_ioctl2,
+ .poll = zr364xx_poll,
+};
+
+static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = {
+ .vidioc_querycap = zr364xx_vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = zr364xx_vidioc_enum_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = zr364xx_vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = zr364xx_vidioc_s_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = zr364xx_vidioc_g_fmt_vid_cap,
+ .vidioc_enum_input = zr364xx_vidioc_enum_input,
+ .vidioc_g_input = zr364xx_vidioc_g_input,
+ .vidioc_s_input = zr364xx_vidioc_s_input,
+ .vidioc_streamon = zr364xx_vidioc_streamon,
+ .vidioc_streamoff = zr364xx_vidioc_streamoff,
+ .vidioc_reqbufs = zr364xx_vidioc_reqbufs,
+ .vidioc_querybuf = zr364xx_vidioc_querybuf,
+ .vidioc_qbuf = zr364xx_vidioc_qbuf,
+ .vidioc_dqbuf = zr364xx_vidioc_dqbuf,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static struct video_device zr364xx_template = {
+ .name = DRIVER_DESC,
+ .fops = &zr364xx_fops,
+ .ioctl_ops = &zr364xx_ioctl_ops,
+ .release = video_device_release_empty,
+};
+
+
+
+/*******************/
+/* USB integration */
+/*******************/
+static int zr364xx_board_init(struct zr364xx_camera *cam)
+{
+ struct zr364xx_pipeinfo *pipe = cam->pipe;
+ unsigned long i;
+
+ DBG("board init: %p\n", cam);
+ memset(pipe, 0, sizeof(*pipe));
+ pipe->cam = cam;
+ pipe->transfer_size = BUFFER_SIZE;
+
+ pipe->transfer_buffer = kzalloc(pipe->transfer_size,
+ GFP_KERNEL);
+ if (pipe->transfer_buffer == NULL) {
+ DBG("out of memory!\n");
+ return -ENOMEM;
+ }
+
+ cam->b_acquire = 0;
+ cam->frame_count = 0;
+
+ /*** start create system buffers ***/
+ for (i = 0; i < FRAMES; i++) {
+ /* always allocate maximum size for system buffers */
+ cam->buffer.frame[i].lpvbits = vmalloc(MAX_FRAME_SIZE);
+
+ DBG("valloc %p, idx %lu, pdata %p\n",
+ &cam->buffer.frame[i], i,
+ cam->buffer.frame[i].lpvbits);
+ if (cam->buffer.frame[i].lpvbits == NULL) {
+ printk(KERN_INFO KBUILD_MODNAME ": out of memory. "
+ "Using less frames\n");
+ break;
+ }
+ }
+
+ if (i == 0) {
+ printk(KERN_INFO KBUILD_MODNAME ": out of memory. Aborting\n");
+ kfree(cam->pipe->transfer_buffer);
+ cam->pipe->transfer_buffer = NULL;
+ return -ENOMEM;
+ } else
+ cam->buffer.dwFrames = i;
+
+ /* make sure internal states are set */
+ for (i = 0; i < FRAMES; i++) {
+ cam->buffer.frame[i].ulState = ZR364XX_READ_IDLE;
+ cam->buffer.frame[i].cur_size = 0;
+ }
+
+ cam->cur_frame = 0;
+ cam->last_frame = -1;
+ /*** end create system buffers ***/
+
+ /* start read pipe */
+ zr364xx_start_readpipe(cam);
+ DBG(": board initialized\n");
+ return 0;
+}
+
+static int zr364xx_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct zr364xx_camera *cam = NULL;
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ struct v4l2_ctrl_handler *hdl;
+ int err;
+ int i;
+
+ DBG("probing...\n");
+
+ dev_info(&intf->dev, DRIVER_DESC " compatible webcam plugged\n");
+ dev_info(&intf->dev, "model %04x:%04x detected\n",
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct));
+
+ cam = kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL);
+ if (cam == NULL) {
+ dev_err(&udev->dev, "cam: out of memory !\n");
+ return -ENOMEM;
+ }
+
+ cam->v4l2_dev.release = zr364xx_release;
+ err = v4l2_device_register(&intf->dev, &cam->v4l2_dev);
+ if (err < 0) {
+ dev_err(&udev->dev, "couldn't register v4l2_device\n");
+ kfree(cam);
+ return err;
+ }
+ hdl = &cam->ctrl_handler;
+ v4l2_ctrl_handler_init(hdl, 1);
+ v4l2_ctrl_new_std(hdl, &zr364xx_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 127, 1, 64);
+ if (hdl->error) {
+ err = hdl->error;
+ dev_err(&udev->dev, "couldn't register control\n");
+ goto fail;
+ }
+ /* save the init method used by this camera */
+ cam->method = id->driver_info;
+ mutex_init(&cam->lock);
+ cam->vdev = zr364xx_template;
+ cam->vdev.lock = &cam->lock;
+ cam->vdev.v4l2_dev = &cam->v4l2_dev;
+ cam->vdev.ctrl_handler = &cam->ctrl_handler;
+ set_bit(V4L2_FL_USE_FH_PRIO, &cam->vdev.flags);
+ video_set_drvdata(&cam->vdev, cam);
+ if (debug)
+ cam->vdev.debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
+
+ cam->udev = udev;
+
+ switch (mode) {
+ case 1:
+ dev_info(&udev->dev, "160x120 mode selected\n");
+ cam->width = 160;
+ cam->height = 120;
+ break;
+ case 2:
+ dev_info(&udev->dev, "640x480 mode selected\n");
+ cam->width = 640;
+ cam->height = 480;
+ break;
+ default:
+ dev_info(&udev->dev, "320x240 mode selected\n");
+ cam->width = 320;
+ cam->height = 240;
+ break;
+ }
+
+ m0d1[0] = mode;
+ m1[2].value = 0xf000 + mode;
+ m2[1].value = 0xf000 + mode;
+
+ /* special case for METHOD3, the modes are different */
+ if (cam->method == METHOD3) {
+ switch (mode) {
+ case 1:
+ m2[1].value = 0xf000 + 4;
+ break;
+ case 2:
+ m2[1].value = 0xf000 + 0;
+ break;
+ default:
+ m2[1].value = 0xf000 + 1;
+ break;
+ }
+ }
+
+ header2[437] = cam->height / 256;
+ header2[438] = cam->height % 256;
+ header2[439] = cam->width / 256;
+ header2[440] = cam->width % 256;
+
+ cam->nb = 0;
+
+ DBG("dev: %p, udev %p interface %p\n", cam, cam->udev, intf);
+
+ /* set up the endpoint information */
+ iface_desc = intf->cur_altsetting;
+ DBG("num endpoints %d\n", iface_desc->desc.bNumEndpoints);
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+ if (!cam->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) {
+ /* we found the bulk in endpoint */
+ cam->read_endpoint = endpoint->bEndpointAddress;
+ }
+ }
+
+ if (!cam->read_endpoint) {
+ err = -ENOMEM;
+ dev_err(&intf->dev, "Could not find bulk-in endpoint\n");
+ goto fail;
+ }
+
+ /* v4l */
+ INIT_LIST_HEAD(&cam->vidq.active);
+ cam->vidq.cam = cam;
+
+ usb_set_intfdata(intf, cam);
+
+ /* load zr364xx board specific */
+ err = zr364xx_board_init(cam);
+ if (!err)
+ err = v4l2_ctrl_handler_setup(hdl);
+ if (err)
+ goto fail;
+
+ spin_lock_init(&cam->slock);
+
+ cam->fmt = formats;
+
+ videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops,
+ NULL, &cam->slock,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ V4L2_FIELD_NONE,
+ sizeof(struct zr364xx_buffer), cam, &cam->lock);
+
+ err = video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1);
+ if (err) {
+ dev_err(&udev->dev, "video_register_device failed\n");
+ goto fail;
+ }
+
+ dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n",
+ video_device_node_name(&cam->vdev));
+ return 0;
+
+fail:
+ v4l2_ctrl_handler_free(hdl);
+ v4l2_device_unregister(&cam->v4l2_dev);
+ kfree(cam);
+ return err;
+}
+
+
+static void zr364xx_disconnect(struct usb_interface *intf)
+{
+ struct zr364xx_camera *cam = usb_get_intfdata(intf);
+
+ mutex_lock(&cam->lock);
+ usb_set_intfdata(intf, NULL);
+ dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n");
+ video_unregister_device(&cam->vdev);
+ v4l2_device_disconnect(&cam->v4l2_dev);
+
+ /* stops the read pipe if it is running */
+ if (cam->b_acquire)
+ zr364xx_stop_acquire(cam);
+
+ zr364xx_stop_readpipe(cam);
+ mutex_unlock(&cam->lock);
+ v4l2_device_put(&cam->v4l2_dev);
+}
+
+
+#ifdef CONFIG_PM
+static int zr364xx_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct zr364xx_camera *cam = usb_get_intfdata(intf);
+
+ cam->was_streaming = cam->b_acquire;
+ if (!cam->was_streaming)
+ return 0;
+ zr364xx_stop_acquire(cam);
+ zr364xx_stop_readpipe(cam);
+ return 0;
+}
+
+static int zr364xx_resume(struct usb_interface *intf)
+{
+ struct zr364xx_camera *cam = usb_get_intfdata(intf);
+ int res;
+
+ if (!cam->was_streaming)
+ return 0;
+
+ zr364xx_start_readpipe(cam);
+ res = zr364xx_prepare(cam);
+ if (!res)
+ zr364xx_start_acquire(cam);
+ return res;
+}
+#endif
+
+/**********************/
+/* Module integration */
+/**********************/
+
+static struct usb_driver zr364xx_driver = {
+ .name = "zr364xx",
+ .probe = zr364xx_probe,
+ .disconnect = zr364xx_disconnect,
+#ifdef CONFIG_PM
+ .suspend = zr364xx_suspend,
+ .resume = zr364xx_resume,
+ .reset_resume = zr364xx_resume,
+#endif
+ .id_table = device_table
+};
+
+module_usb_driver(zr364xx_driver);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 01:54:04 +0000