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- /*
- * Syntek DV4000 (STK014) subdriver
- *
- * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
- *
- * 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
- */
- #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
- #define MODULE_NAME "stk014"
- #include "gspca.h"
- #include "jpeg.h"
- MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
- MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
- MODULE_LICENSE("GPL");
- #define QUALITY 50
- /* specific webcam descriptor */
- struct sd {
- struct gspca_dev gspca_dev; /* !! must be the first item */
- u8 jpeg_hdr[JPEG_HDR_SZ];
- };
- static const struct v4l2_pix_format vga_mode[] = {
- {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
- .bytesperline = 320,
- .sizeimage = 320 * 240 * 3 / 8 + 590,
- .colorspace = V4L2_COLORSPACE_JPEG,
- .priv = 1},
- {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
- .bytesperline = 640,
- .sizeimage = 640 * 480 * 3 / 8 + 590,
- .colorspace = V4L2_COLORSPACE_JPEG,
- .priv = 0},
- };
- /* -- read a register -- */
- static u8 reg_r(struct gspca_dev *gspca_dev,
- __u16 index)
- {
- struct usb_device *dev = gspca_dev->dev;
- int ret;
- if (gspca_dev->usb_err < 0)
- return 0;
- ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
- 0x00,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0x00,
- index,
- gspca_dev->usb_buf, 1,
- 500);
- if (ret < 0) {
- pr_err("reg_r err %d\n", ret);
- gspca_dev->usb_err = ret;
- return 0;
- }
- return gspca_dev->usb_buf[0];
- }
- /* -- write a register -- */
- static void reg_w(struct gspca_dev *gspca_dev,
- __u16 index, __u16 value)
- {
- struct usb_device *dev = gspca_dev->dev;
- int ret;
- if (gspca_dev->usb_err < 0)
- return;
- ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
- 0x01,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- value,
- index,
- NULL,
- 0,
- 500);
- if (ret < 0) {
- pr_err("reg_w err %d\n", ret);
- gspca_dev->usb_err = ret;
- }
- }
- /* -- get a bulk value (4 bytes) -- */
- static void rcv_val(struct gspca_dev *gspca_dev,
- int ads)
- {
- struct usb_device *dev = gspca_dev->dev;
- int alen, ret;
- reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
- reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
- reg_w(gspca_dev, 0x636, ads & 0xff);
- reg_w(gspca_dev, 0x637, 0);
- reg_w(gspca_dev, 0x638, 4); /* len & 0xff */
- reg_w(gspca_dev, 0x639, 0); /* len >> 8 */
- reg_w(gspca_dev, 0x63a, 0);
- reg_w(gspca_dev, 0x63b, 0);
- reg_w(gspca_dev, 0x630, 5);
- if (gspca_dev->usb_err < 0)
- return;
- ret = usb_bulk_msg(dev,
- usb_rcvbulkpipe(dev, 0x05),
- gspca_dev->usb_buf,
- 4, /* length */
- &alen,
- 500); /* timeout in milliseconds */
- if (ret < 0) {
- pr_err("rcv_val err %d\n", ret);
- gspca_dev->usb_err = ret;
- }
- }
- /* -- send a bulk value -- */
- static void snd_val(struct gspca_dev *gspca_dev,
- int ads,
- unsigned int val)
- {
- struct usb_device *dev = gspca_dev->dev;
- int alen, ret;
- __u8 seq = 0;
- if (ads == 0x003f08) {
- reg_r(gspca_dev, 0x0704);
- seq = reg_r(gspca_dev, 0x0705);
- reg_r(gspca_dev, 0x0650);
- reg_w(gspca_dev, 0x654, seq);
- } else {
- reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
- }
- reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
- reg_w(gspca_dev, 0x656, ads & 0xff);
- reg_w(gspca_dev, 0x657, 0);
- reg_w(gspca_dev, 0x658, 0x04); /* size */
- reg_w(gspca_dev, 0x659, 0);
- reg_w(gspca_dev, 0x65a, 0);
- reg_w(gspca_dev, 0x65b, 0);
- reg_w(gspca_dev, 0x650, 5);
- if (gspca_dev->usb_err < 0)
- return;
- gspca_dev->usb_buf[0] = val >> 24;
- gspca_dev->usb_buf[1] = val >> 16;
- gspca_dev->usb_buf[2] = val >> 8;
- gspca_dev->usb_buf[3] = val;
- ret = usb_bulk_msg(dev,
- usb_sndbulkpipe(dev, 6),
- gspca_dev->usb_buf,
- 4,
- &alen,
- 500); /* timeout in milliseconds */
- if (ret < 0) {
- pr_err("snd_val err %d\n", ret);
- gspca_dev->usb_err = ret;
- } else {
- if (ads == 0x003f08) {
- seq += 4;
- seq &= 0x3f;
- reg_w(gspca_dev, 0x705, seq);
- }
- }
- }
- /* set a camera parameter */
- static void set_par(struct gspca_dev *gspca_dev,
- int parval)
- {
- snd_val(gspca_dev, 0x003f08, parval);
- }
- static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
- {
- int parval;
- parval = 0x06000000 /* whiteness */
- + (val << 16);
- set_par(gspca_dev, parval);
- }
- static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
- {
- int parval;
- parval = 0x07000000 /* contrast */
- + (val << 16);
- set_par(gspca_dev, parval);
- }
- static void setcolors(struct gspca_dev *gspca_dev, s32 val)
- {
- int parval;
- parval = 0x08000000 /* saturation */
- + (val << 16);
- set_par(gspca_dev, parval);
- }
- static void setlightfreq(struct gspca_dev *gspca_dev, s32 val)
- {
- set_par(gspca_dev, val == 1
- ? 0x33640000 /* 50 Hz */
- : 0x33780000); /* 60 Hz */
- }
- /* this function is called at probe time */
- static int sd_config(struct gspca_dev *gspca_dev,
- const struct usb_device_id *id)
- {
- gspca_dev->cam.cam_mode = vga_mode;
- gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
- return 0;
- }
- /* this function is called at probe and resume time */
- static int sd_init(struct gspca_dev *gspca_dev)
- {
- u8 ret;
- /* check if the device responds */
- usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
- ret = reg_r(gspca_dev, 0x0740);
- if (gspca_dev->usb_err >= 0) {
- if (ret != 0xff) {
- pr_err("init reg: 0x%02x\n", ret);
- gspca_dev->usb_err = -EIO;
- }
- }
- return gspca_dev->usb_err;
- }
- /* -- start the camera -- */
- static int sd_start(struct gspca_dev *gspca_dev)
- {
- struct sd *sd = (struct sd *) gspca_dev;
- int ret, value;
- /* create the JPEG header */
- jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
- gspca_dev->pixfmt.width,
- 0x22); /* JPEG 411 */
- jpeg_set_qual(sd->jpeg_hdr, QUALITY);
- /* work on alternate 1 */
- usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
- set_par(gspca_dev, 0x10000000);
- set_par(gspca_dev, 0x00000000);
- set_par(gspca_dev, 0x8002e001);
- set_par(gspca_dev, 0x14000000);
- if (gspca_dev->pixfmt.width > 320)
- value = 0x8002e001; /* 640x480 */
- else
- value = 0x4001f000; /* 320x240 */
- set_par(gspca_dev, value);
- ret = usb_set_interface(gspca_dev->dev,
- gspca_dev->iface,
- gspca_dev->alt);
- if (ret < 0) {
- pr_err("set intf %d %d failed\n",
- gspca_dev->iface, gspca_dev->alt);
- gspca_dev->usb_err = ret;
- goto out;
- }
- reg_r(gspca_dev, 0x0630);
- rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
- reg_r(gspca_dev, 0x0650);
- snd_val(gspca_dev, 0x000020, 0xffffffff);
- reg_w(gspca_dev, 0x0620, 0);
- reg_w(gspca_dev, 0x0630, 0);
- reg_w(gspca_dev, 0x0640, 0);
- reg_w(gspca_dev, 0x0650, 0);
- reg_w(gspca_dev, 0x0660, 0);
- set_par(gspca_dev, 0x09800000); /* Red ? */
- set_par(gspca_dev, 0x0a800000); /* Green ? */
- set_par(gspca_dev, 0x0b800000); /* Blue ? */
- set_par(gspca_dev, 0x0d030000); /* Gamma ? */
- /* start the video flow */
- set_par(gspca_dev, 0x01000000);
- set_par(gspca_dev, 0x01000000);
- if (gspca_dev->usb_err >= 0)
- PDEBUG(D_STREAM, "camera started alt: 0x%02x",
- gspca_dev->alt);
- out:
- return gspca_dev->usb_err;
- }
- static void sd_stopN(struct gspca_dev *gspca_dev)
- {
- struct usb_device *dev = gspca_dev->dev;
- set_par(gspca_dev, 0x02000000);
- set_par(gspca_dev, 0x02000000);
- usb_set_interface(dev, gspca_dev->iface, 1);
- reg_r(gspca_dev, 0x0630);
- rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
- reg_r(gspca_dev, 0x0650);
- snd_val(gspca_dev, 0x000020, 0xffffffff);
- reg_w(gspca_dev, 0x0620, 0);
- reg_w(gspca_dev, 0x0630, 0);
- reg_w(gspca_dev, 0x0640, 0);
- reg_w(gspca_dev, 0x0650, 0);
- reg_w(gspca_dev, 0x0660, 0);
- PDEBUG(D_STREAM, "camera stopped");
- }
- static void sd_pkt_scan(struct gspca_dev *gspca_dev,
- u8 *data, /* isoc packet */
- int len) /* iso packet length */
- {
- struct sd *sd = (struct sd *) gspca_dev;
- static unsigned char ffd9[] = {0xff, 0xd9};
- /* a frame starts with:
- * - 0xff 0xfe
- * - 0x08 0x00 - length (little endian ?!)
- * - 4 bytes = size of whole frame (BE - including header)
- * - 0x00 0x0c
- * - 0xff 0xd8
- * - .. JPEG image with escape sequences (ff 00)
- * (without ending - ff d9)
- */
- if (data[0] == 0xff && data[1] == 0xfe) {
- gspca_frame_add(gspca_dev, LAST_PACKET,
- ffd9, 2);
- /* put the JPEG 411 header */
- gspca_frame_add(gspca_dev, FIRST_PACKET,
- sd->jpeg_hdr, JPEG_HDR_SZ);
- /* beginning of the frame */
- #define STKHDRSZ 12
- data += STKHDRSZ;
- len -= STKHDRSZ;
- }
- gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
- }
- static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
- {
- struct gspca_dev *gspca_dev =
- container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
- gspca_dev->usb_err = 0;
- if (!gspca_dev->streaming)
- return 0;
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- setbrightness(gspca_dev, ctrl->val);
- break;
- case V4L2_CID_CONTRAST:
- setcontrast(gspca_dev, ctrl->val);
- break;
- case V4L2_CID_SATURATION:
- setcolors(gspca_dev, ctrl->val);
- break;
- case V4L2_CID_POWER_LINE_FREQUENCY:
- setlightfreq(gspca_dev, ctrl->val);
- break;
- }
- return gspca_dev->usb_err;
- }
- static const struct v4l2_ctrl_ops sd_ctrl_ops = {
- .s_ctrl = sd_s_ctrl,
- };
- static int sd_init_controls(struct gspca_dev *gspca_dev)
- {
- struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
- gspca_dev->vdev.ctrl_handler = hdl;
- v4l2_ctrl_handler_init(hdl, 4);
- v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
- V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);
- v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
- V4L2_CID_CONTRAST, 0, 255, 1, 127);
- v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
- V4L2_CID_SATURATION, 0, 255, 1, 127);
- v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
- V4L2_CID_POWER_LINE_FREQUENCY,
- V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 1,
- V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
- if (hdl->error) {
- pr_err("Could not initialize controls\n");
- return hdl->error;
- }
- return 0;
- }
- /* sub-driver description */
- static const struct sd_desc sd_desc = {
- .name = MODULE_NAME,
- .config = sd_config,
- .init = sd_init,
- .init_controls = sd_init_controls,
- .start = sd_start,
- .stopN = sd_stopN,
- .pkt_scan = sd_pkt_scan,
- };
- /* -- module initialisation -- */
- static const struct usb_device_id device_table[] = {
- {USB_DEVICE(0x05e1, 0x0893)},
- {}
- };
- MODULE_DEVICE_TABLE(usb, device_table);
- /* -- device connect -- */
- static int sd_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
- {
- return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
- THIS_MODULE);
- }
- static struct usb_driver sd_driver = {
- .name = MODULE_NAME,
- .id_table = device_table,
- .probe = sd_probe,
- .disconnect = gspca_disconnect,
- #ifdef CONFIG_PM
- .suspend = gspca_suspend,
- .resume = gspca_resume,
- .reset_resume = gspca_resume,
- #endif
- };
- module_usb_driver(sd_driver);
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