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path: root/drivers/media/usb/gspca/stk014.c
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Diffstat (limited to 'drivers/media/usb/gspca/stk014.c')
-rw-r--r--drivers/media/usb/gspca/stk014.c446
1 files changed, 446 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/stk014.c b/drivers/media/usb/gspca/stk014.c
new file mode 100644
index 0000000..8c09826
--- /dev/null
+++ b/drivers/media/usb/gspca/stk014.c
@@ -0,0 +1,446 @@
+/*
+ * 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->height, gspca_dev->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->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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