diff options
Diffstat (limited to 'drivers/media/video/gspca/stk014.c')
| -rw-r--r-- | drivers/media/video/gspca/stk014.c | 522 |
1 files changed, 522 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/stk014.c b/drivers/media/video/gspca/stk014.c new file mode 100644 index 00000000..4ae7cc8f --- /dev/null +++ b/drivers/media/video/gspca/stk014.c @@ -0,0 +1,522 @@ +/* + * 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"); + +/* controls */ +enum e_ctrl { + BRIGHTNESS, + CONTRAST, + COLORS, + LIGHTFREQ, + NCTRLS /* number of controls */ +}; + +/* specific webcam descriptor */ +struct sd { + struct gspca_dev gspca_dev; /* !! must be the first item */ + + struct gspca_ctrl ctrls[NCTRLS]; + + u8 quality; +#define QUALITY_MIN 70 +#define QUALITY_MAX 95 +#define QUALITY_DEF 88 + + u8 jpeg_hdr[JPEG_HDR_SZ]; +}; + +/* V4L2 controls supported by the driver */ +static void setbrightness(struct gspca_dev *gspca_dev); +static void setcontrast(struct gspca_dev *gspca_dev); +static void setcolors(struct gspca_dev *gspca_dev); +static void setlightfreq(struct gspca_dev *gspca_dev); + +static const struct ctrl sd_ctrls[NCTRLS] = { +[BRIGHTNESS] = { + { + .id = V4L2_CID_BRIGHTNESS, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Brightness", + .minimum = 0, + .maximum = 255, + .step = 1, + .default_value = 127, + }, + .set_control = setbrightness + }, +[CONTRAST] = { + { + .id = V4L2_CID_CONTRAST, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Contrast", + .minimum = 0, + .maximum = 255, + .step = 1, + .default_value = 127, + }, + .set_control = setcontrast + }, +[COLORS] = { + { + .id = V4L2_CID_SATURATION, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Color", + .minimum = 0, + .maximum = 255, + .step = 1, + .default_value = 127, + }, + .set_control = setcolors + }, +[LIGHTFREQ] = { + { + .id = V4L2_CID_POWER_LINE_FREQUENCY, + .type = V4L2_CTRL_TYPE_MENU, + .name = "Light frequency filter", + .minimum = 1, + .maximum = 2, /* 0: 0, 1: 50Hz, 2:60Hz */ + .step = 1, + .default_value = 1, + }, + .set_control = setlightfreq + }, +}; + +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) +{ + struct sd *sd = (struct sd *) gspca_dev; + int parval; + + parval = 0x06000000 /* whiteness */ + + (sd->ctrls[BRIGHTNESS].val << 16); + set_par(gspca_dev, parval); +} + +static void setcontrast(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + int parval; + + parval = 0x07000000 /* contrast */ + + (sd->ctrls[CONTRAST].val << 16); + set_par(gspca_dev, parval); +} + +static void setcolors(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + int parval; + + parval = 0x08000000 /* saturation */ + + (sd->ctrls[COLORS].val << 16); + set_par(gspca_dev, parval); +} + +static void setlightfreq(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + + set_par(gspca_dev, sd->ctrls[LIGHTFREQ].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) +{ + struct sd *sd = (struct sd *) gspca_dev; + + gspca_dev->cam.cam_mode = vga_mode; + gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode); + gspca_dev->cam.ctrls = sd->ctrls; + sd->quality = QUALITY_DEF; + 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, sd->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); + 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 ? */ + setlightfreq(gspca_dev); + + /* 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_querymenu(struct gspca_dev *gspca_dev, + struct v4l2_querymenu *menu) +{ + static const char *freq_nm[3] = {"NoFliker", "50 Hz", "60 Hz"}; + + switch (menu->id) { + case V4L2_CID_POWER_LINE_FREQUENCY: + if ((unsigned) menu->index >= ARRAY_SIZE(freq_nm)) + break; + strcpy((char *) menu->name, freq_nm[menu->index]); + return 0; + } + return -EINVAL; +} + +static int sd_set_jcomp(struct gspca_dev *gspca_dev, + struct v4l2_jpegcompression *jcomp) +{ + struct sd *sd = (struct sd *) gspca_dev; + + if (jcomp->quality < QUALITY_MIN) + sd->quality = QUALITY_MIN; + else if (jcomp->quality > QUALITY_MAX) + sd->quality = QUALITY_MAX; + else + sd->quality = jcomp->quality; + if (gspca_dev->streaming) + jpeg_set_qual(sd->jpeg_hdr, sd->quality); + return gspca_dev->usb_err; +} + +static int sd_get_jcomp(struct gspca_dev *gspca_dev, + struct v4l2_jpegcompression *jcomp) +{ + struct sd *sd = (struct sd *) gspca_dev; + + memset(jcomp, 0, sizeof *jcomp); + jcomp->quality = sd->quality; + jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT + | V4L2_JPEG_MARKER_DQT; + return 0; +} + +/* sub-driver description */ +static const struct sd_desc sd_desc = { + .name = MODULE_NAME, + .ctrls = sd_ctrls, + .nctrls = NCTRLS, + .config = sd_config, + .init = sd_init, + .start = sd_start, + .stopN = sd_stopN, + .pkt_scan = sd_pkt_scan, + .querymenu = sd_querymenu, + .get_jcomp = sd_get_jcomp, + .set_jcomp = sd_set_jcomp, +}; + +/* -- 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, +#endif +}; + +module_usb_driver(sd_driver); |