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path: root/drivers/media/video/gspca/stk014.c
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Diffstat (limited to 'drivers/media/video/gspca/stk014.c')
-rw-r--r--drivers/media/video/gspca/stk014.c562
1 files changed, 562 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/stk014.c b/drivers/media/video/gspca/stk014.c
new file mode 100644
index 00000000000..8fd4ff01362
--- /dev/null
+++ b/drivers/media/video/gspca/stk014.c
@@ -0,0 +1,562 @@
+/*
+ * Syntek DV4000 (STK014) subdriver
+ *
+ * Copyright (C) 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 MODULE_NAME "stk014"
+
+#include "gspca.h"
+#include "jpeg.h"
+
+#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 0, 22)
+static const char version[] = "0.0.22";
+
+MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
+MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ unsigned char brightness;
+ unsigned char contrast;
+ unsigned char colors;
+};
+
+/* global parameters */
+static int lightfreq = 50;
+static int sd_quant = 7; /* <= 4 KO - 7: good (enough!) */
+
+/* V4L2 controls supported by the driver */
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
+
+static struct ctrl sd_ctrls[] = {
+#define SD_BRIGHTNESS 0
+ {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 127,
+ },
+ .set = sd_setbrightness,
+ .get = sd_getbrightness,
+ },
+#define SD_CONTRAST 1
+ {
+ {
+ .id = V4L2_CID_CONTRAST,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Contrast",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 127,
+ },
+ .set = sd_setcontrast,
+ .get = sd_getcontrast,
+ },
+#define SD_COLOR 2
+ {
+ {
+ .id = V4L2_CID_SATURATION,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Saturation",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 127,
+ },
+ .set = sd_setcolors,
+ .get = sd_getcolors,
+ },
+};
+
+static struct cam_mode vga_mode[] = {
+ {V4L2_PIX_FMT_JPEG, 320, 240},
+ {V4L2_PIX_FMT_JPEG, 640, 480},
+};
+
+/* -- read a register -- */
+static int reg_read(struct gspca_dev *gspca_dev,
+ __u16 index, __u8 *buf)
+{
+ int ret;
+ struct usb_device *dev = gspca_dev->dev;
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0x00,
+ index,
+ buf, 1,
+ 500);
+ if (ret < 0)
+ PDEBUG(D_ERR, "reg_read err %d", ret);
+ return ret;
+}
+
+/* -- write a register -- */
+static int reg_write(struct gspca_dev *gspca_dev,
+ __u16 index, __u16 value)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ int ret;
+
+ 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)
+ PDEBUG(D_ERR, "reg_write err %d", ret);
+ return ret;
+}
+
+/* -- get a value -- */
+static int rcv_val(struct gspca_dev *gspca_dev,
+ int ads,
+ int len)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ int alen, ret;
+ unsigned char bulk_buf[4];
+
+ reg_write(gspca_dev, 0x634, (ads >> 16) & 0xff);
+ reg_write(gspca_dev, 0x635, (ads >> 8) & 0xff);
+ reg_write(gspca_dev, 0x636, ads & 0xff);
+ reg_write(gspca_dev, 0x637, 0);
+ reg_write(gspca_dev, 0x638, len & 0xff);
+ reg_write(gspca_dev, 0x639, len >> 8);
+ reg_write(gspca_dev, 0x63a, 0);
+ reg_write(gspca_dev, 0x63b, 0);
+ reg_write(gspca_dev, 0x630, 5);
+ if (len > sizeof bulk_buf)
+ return -1;
+ ret = usb_bulk_msg(dev,
+ usb_rcvbulkpipe(dev, 5),
+ bulk_buf,
+ len,
+ &alen,
+ 500); /* timeout in milliseconds */
+ return ret;
+}
+
+/* -- send a value -- */
+static int snd_val(struct gspca_dev *gspca_dev,
+ int ads,
+ unsigned int val)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ int alen, ret;
+ __u8 value, seq;
+ unsigned char bulk_buf[4];
+
+ if (ads == 0x003f08) {
+ ret = reg_read(gspca_dev, 0x0704, &value);
+ if (ret < 0)
+ goto ko;
+ ret = reg_read(gspca_dev, 0x0705, &seq);
+ if (ret < 0)
+ goto ko;
+ ret = reg_read(gspca_dev, 0x0650, &value);
+ if (ret < 0)
+ goto ko;
+ reg_write(gspca_dev, 0x654, seq);
+ } else
+ reg_write(gspca_dev, 0x654, (ads >> 16) & 0xff);
+ reg_write(gspca_dev, 0x655, (ads >> 8) & 0xff);
+ reg_write(gspca_dev, 0x656, ads & 0xff);
+ reg_write(gspca_dev, 0x657, 0);
+ reg_write(gspca_dev, 0x658, 0x04); /* size */
+ reg_write(gspca_dev, 0x659, 0);
+ reg_write(gspca_dev, 0x65a, 0);
+ reg_write(gspca_dev, 0x65b, 0);
+ reg_write(gspca_dev, 0x650, 5);
+ bulk_buf[0] = (val >> 24) & 0xff;
+ bulk_buf[1] = (val >> 16) & 0xff;
+ bulk_buf[2] = (val >> 8) & 0xff;
+ bulk_buf[3] = val & 0xff;
+ ret = usb_bulk_msg(dev,
+ usb_sndbulkpipe(dev, 6),
+ bulk_buf,
+ 4,
+ &alen,
+ 500); /* timeout in milliseconds */
+ if (ret < 0)
+ goto ko;
+ if (ads == 0x003f08) {
+ seq += 4;
+ seq &= 0x3f;
+ reg_write(gspca_dev, 0x705, seq);
+ }
+ return ret;
+ko:
+ PDEBUG(D_ERR, "snd_val err %d", ret);
+ return ret;
+}
+
+/* set a camera parameter */
+static int set_par(struct gspca_dev *gspca_dev,
+ int parval)
+{
+ return snd_val(gspca_dev, 0x003f08, parval);
+}
+
+static void setbrightness(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int parval;
+
+ PDEBUG(D_CONF, "brightness: %d", sd->brightness);
+ parval = 0x06000000 /* whiteness */
+ + (sd->brightness << 16);
+ set_par(gspca_dev, parval);
+}
+
+static void setcontrast(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int parval;
+
+ PDEBUG(D_CONF, "contrast: %d", sd->contrast);
+ parval = 0x07000000 /* contrast */
+ + (sd->contrast << 16);
+ set_par(gspca_dev, parval);
+}
+
+static void setcolors(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int parval;
+
+ PDEBUG(D_CONF, "saturation: %d",
+ sd->colors);
+ parval = 0x08000000 /* saturation */
+ + (sd->colors << 16);
+ set_par(gspca_dev, parval);
+}
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct cam *cam = &gspca_dev->cam;
+
+ cam->dev_name = (char *) id->driver_info;
+ cam->epaddr = 0x02;
+ gspca_dev->cam.cam_mode = vga_mode;
+ gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
+ sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
+ sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
+ sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
+ return 0;
+}
+
+/* this function is called at open time */
+static int sd_open(struct gspca_dev *gspca_dev)
+{
+ __u8 value;
+ int ret;
+
+ /* check if the device responds */
+ usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
+ ret = reg_read(gspca_dev, 0x0740, &value);
+ if (ret < 0)
+ return ret;
+ if (value != 0xff) {
+ PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", value);
+ return -1;
+ }
+ return 0;
+}
+
+/* -- start the camera -- */
+static void sd_start(struct gspca_dev *gspca_dev)
+{
+ __u8 dum;
+ int ret, value;
+
+ /* 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)
+ goto out;
+ ret = reg_read(gspca_dev, 0x0630, &dum);
+ if (ret < 0)
+ goto out;
+ rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
+ ret = reg_read(gspca_dev, 0x0650, &dum);
+ if (ret < 0)
+ goto out;
+ snd_val(gspca_dev, 0x000020, 0xffffffff);
+ reg_write(gspca_dev, 0x0620, 0);
+ reg_write(gspca_dev, 0x0630, 0);
+ reg_write(gspca_dev, 0x0640, 0);
+ reg_write(gspca_dev, 0x0650, 0);
+ reg_write(gspca_dev, 0x0660, 0);
+ setbrightness(gspca_dev); /* whiteness */
+ setcontrast(gspca_dev); /* contrast */
+ setcolors(gspca_dev); /* saturation */
+ set_par(gspca_dev, 0x09800000); /* Red ? */
+ set_par(gspca_dev, 0x0a800000); /* Green ? */
+ set_par(gspca_dev, 0x0b800000); /* Blue ? */
+ set_par(gspca_dev, 0x0d030000); /* Gamma ? */
+ set_par(gspca_dev, lightfreq == 60
+ ? 0x33780000 /* 60 Hz */
+ : 0x33640000); /* 50 Hz */
+
+ /* start the video flow */
+ set_par(gspca_dev, 0x01000000);
+ set_par(gspca_dev, 0x01000000);
+ PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
+ return;
+out:
+ PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ struct usb_device *dev = gspca_dev->dev;
+ __u8 value;
+
+ set_par(gspca_dev, 0x02000000);
+ set_par(gspca_dev, 0x02000000);
+ usb_set_interface(dev, gspca_dev->iface, 1);
+ reg_read(gspca_dev, 0x0630, &value);
+ rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
+ reg_read(gspca_dev, 0x0650, &value);
+ snd_val(gspca_dev, 0x000020, 0xffffffff);
+ reg_write(gspca_dev, 0x0620, 0);
+ reg_write(gspca_dev, 0x0630, 0);
+ reg_write(gspca_dev, 0x0640, 0);
+ reg_write(gspca_dev, 0x0650, 0);
+ reg_write(gspca_dev, 0x0660, 0);
+ PDEBUG(D_STREAM, "camera stopped");
+}
+
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+}
+
+static void sd_close(struct gspca_dev *gspca_dev)
+{
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+ struct gspca_frame *frame, /* target */
+ unsigned char *data, /* isoc packet */
+ int len) /* iso packet length */
+{
+ int l;
+
+ /* a frame starts with:
+ * - 0xff 0xfe
+ * - 0x08 0x00 // length (little endian ?!)
+ * - 4 bytes = size of whole frame (big endian - including header)
+ * - 0x00 0x0c
+ * - 0xff 0xd8
+ * - .. JPEG image with escape sequences (ff 00)
+ */
+ if (data[0] == 0xff && data[1] == 0xfe) {
+ if (gspca_dev->last_packet_type == INTER_PACKET) {
+ PDEBUG(D_ERR|D_FRAM, "sof actual l: %d init l: %d",
+ frame->data_end - frame->data,
+ frame->v4l2_buf.bytesused);
+ }
+
+ /* put the JPEG headaer */
+ jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
+
+ /* beginning of the frame */
+#define STKHDRSZ 12
+ l = (data[4] << 24) /* frame size */
+ + (data[5] << 16)
+ + (data[6] << 8)
+ + data[7]
+ - STKHDRSZ
+ + (frame->data_end - frame->data)
+ + 2; /* EOF (ff d9) */
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ data + STKHDRSZ, len - STKHDRSZ);
+#undef STKHDRSZ
+ frame->v4l2_buf.bytesused = l;
+ return;
+ }
+ if (gspca_dev->last_packet_type != INTER_PACKET) {
+ if (gspca_dev->last_packet_type == LAST_PACKET) {
+ PDEBUG(D_ERR|D_PACK, "mof actual l: %d init l: %d",
+ frame->data_end - frame->data,
+ frame->v4l2_buf.bytesused);
+ }
+ return;
+ }
+
+ /* intermediate packet */
+ l = frame->data_end - frame->data;
+ if (len < frame->v4l2_buf.bytesused - 2 - l) {
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+ data, len);
+ return;
+ }
+
+ /* last packet */
+ if (len > frame->v4l2_buf.bytesused - 2 - l)
+ len = frame->v4l2_buf.bytesused - 2 - l;
+ gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
+ gspca_frame_add(gspca_dev, LAST_PACKET, frame, "\xff\xd9", 2);
+}
+
+static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->brightness = val;
+ if (gspca_dev->streaming)
+ setbrightness(gspca_dev);
+ return 0;
+}
+
+static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->brightness;
+ return 0;
+}
+
+static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->contrast = val;
+ if (gspca_dev->streaming)
+ setcontrast(gspca_dev);
+ return 0;
+}
+
+static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->contrast;
+ return 0;
+}
+
+static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->colors = val;
+ if (gspca_dev->streaming)
+ setcolors(gspca_dev);
+ return 0;
+}
+
+static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->colors;
+ return 0;
+}
+
+/* sub-driver description */
+static struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .ctrls = sd_ctrls,
+ .nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
+ .config = sd_config,
+ .open = sd_open,
+ .start = sd_start,
+ .stopN = sd_stopN,
+ .stop0 = sd_stop0,
+ .close = sd_close,
+ .pkt_scan = sd_pkt_scan,
+};
+
+/* -- module initialisation -- */
+#define DVNM(name) .driver_info = (kernel_ulong_t) name
+static __devinitdata struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
+ {}
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ PDEBUG(D_PROBE, "camera probe");
+ return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd));
+}
+
+static struct usb_driver sd_driver = {
+ .name = MODULE_NAME,
+ .id_table = device_table,
+ .probe = sd_probe,
+ .disconnect = gspca_disconnect,
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+ if (usb_register(&sd_driver) < 0)
+ return -1;
+ info("v%s registered", version);
+ return 0;
+}
+static void __exit sd_mod_exit(void)
+{
+ usb_deregister(&sd_driver);
+ info("deregistered");
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);
+
+module_param(lightfreq, int, 0644);
+MODULE_PARM_DESC(lightfreq, "Light frequency 50 or 60 Hz");
+module_param_named(quant, sd_quant, int, 0644);
+MODULE_PARM_DESC(quant, "Quantization index (0..8)");