diff options
Diffstat (limited to 'drivers/media/video/gspca/mr97310a.c')
| -rw-r--r-- | drivers/media/video/gspca/mr97310a.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/mr97310a.c b/drivers/media/video/gspca/mr97310a.c new file mode 100644 index 00000000000..2a901a4a6f0 --- /dev/null +++ b/drivers/media/video/gspca/mr97310a.c @@ -0,0 +1,362 @@ +/* + * Mars MR97310A library + * + * Copyright (C) 2009 Kyle Guinn <elyk03@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 + */ + +#define MODULE_NAME "mr97310a" + +#include "gspca.h" + +MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>"); +MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver"); +MODULE_LICENSE("GPL"); + +/* specific webcam descriptor */ +struct sd { + struct gspca_dev gspca_dev; /* !! must be the first item */ + u8 sof_read; +}; + +/* V4L2 controls supported by the driver */ +static struct ctrl sd_ctrls[] = { +}; + +static const struct v4l2_pix_format vga_mode[] = { + {160, 120, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE, + .bytesperline = 160, + .sizeimage = 160 * 120, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 4}, + {176, 144, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE, + .bytesperline = 176, + .sizeimage = 176 * 144, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 3}, + {320, 240, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE, + .bytesperline = 320, + .sizeimage = 320 * 240, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 2}, + {352, 288, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE, + .bytesperline = 352, + .sizeimage = 352 * 288, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 1}, + {640, 480, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE, + .bytesperline = 640, + .sizeimage = 640 * 480, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 0}, +}; + +/* the bytes to write are in gspca_dev->usb_buf */ +static int reg_w(struct gspca_dev *gspca_dev, int len) +{ + int rc; + + rc = usb_bulk_msg(gspca_dev->dev, + usb_sndbulkpipe(gspca_dev->dev, 4), + gspca_dev->usb_buf, len, NULL, 500); + if (rc < 0) + PDEBUG(D_ERR, "reg write [%02x] error %d", + gspca_dev->usb_buf[0], rc); + return rc; +} + +/* this function is called at probe time */ +static int sd_config(struct gspca_dev *gspca_dev, + const struct usb_device_id *id) +{ + struct cam *cam; + + cam = &gspca_dev->cam; + cam->cam_mode = vga_mode; + 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) +{ + return 0; +} + +static int sd_start(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + __u8 *data = gspca_dev->usb_buf; + int err_code; + + sd->sof_read = 0; + + /* Note: register descriptions guessed from MR97113A driver */ + + data[0] = 0x01; + data[1] = 0x01; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x00; + data[1] = 0x0d; + data[2] = 0x01; + data[5] = 0x2b; + data[7] = 0x00; + data[9] = 0x50; /* reg 8, no scale down */ + data[10] = 0xc0; + + switch (gspca_dev->width) { + case 160: + data[9] |= 0x0c; /* reg 8, 4:1 scale down */ + /* fall thru */ + case 320: + data[9] |= 0x04; /* reg 8, 2:1 scale down */ + /* fall thru */ + case 640: + default: + data[3] = 0x50; /* reg 2, H size */ + data[4] = 0x78; /* reg 3, V size */ + data[6] = 0x04; /* reg 5, H start */ + data[8] = 0x03; /* reg 7, V start */ + break; + + case 176: + data[9] |= 0x04; /* reg 8, 2:1 scale down */ + /* fall thru */ + case 352: + data[3] = 0x2c; /* reg 2, H size */ + data[4] = 0x48; /* reg 3, V size */ + data[6] = 0x94; /* reg 5, H start */ + data[8] = 0x63; /* reg 7, V start */ + break; + } + + err_code = reg_w(gspca_dev, 11); + if (err_code < 0) + return err_code; + + data[0] = 0x0a; + data[1] = 0x80; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x14; + data[1] = 0x0a; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x1b; + data[1] = 0x00; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x15; + data[1] = 0x16; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x16; + data[1] = 0x10; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x17; + data[1] = 0x3a; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x18; + data[1] = 0x68; + err_code = reg_w(gspca_dev, 2); + if (err_code < 0) + return err_code; + + data[0] = 0x1f; + data[1] = 0x00; + data[2] = 0x02; + data[3] = 0x06; + data[4] = 0x59; + data[5] = 0x0c; + data[6] = 0x16; + data[7] = 0x00; + data[8] = 0x07; + data[9] = 0x00; + data[10] = 0x01; + err_code = reg_w(gspca_dev, 11); + if (err_code < 0) + return err_code; + + data[0] = 0x1f; + data[1] = 0x04; + data[2] = 0x11; + data[3] = 0x01; + err_code = reg_w(gspca_dev, 4); + if (err_code < 0) + return err_code; + + data[0] = 0x1f; + data[1] = 0x00; + data[2] = 0x0a; + data[3] = 0x00; + data[4] = 0x01; + data[5] = 0x00; + data[6] = 0x00; + data[7] = 0x01; + data[8] = 0x00; + data[9] = 0x0a; + err_code = reg_w(gspca_dev, 10); + if (err_code < 0) + return err_code; + + data[0] = 0x1f; + data[1] = 0x04; + data[2] = 0x11; + data[3] = 0x01; + err_code = reg_w(gspca_dev, 4); + if (err_code < 0) + return err_code; + + data[0] = 0x1f; + data[1] = 0x00; + data[2] = 0x12; + data[3] = 0x00; + data[4] = 0x63; + data[5] = 0x00; + data[6] = 0x70; + data[7] = 0x00; + data[8] = 0x00; + err_code = reg_w(gspca_dev, 9); + if (err_code < 0) + return err_code; + + data[0] = 0x1f; + data[1] = 0x04; + data[2] = 0x11; + data[3] = 0x01; + err_code = reg_w(gspca_dev, 4); + if (err_code < 0) + return err_code; + + data[0] = 0x00; + data[1] = 0x4d; /* ISOC transfering enable... */ + err_code = reg_w(gspca_dev, 2); + return err_code; +} + +static void sd_stopN(struct gspca_dev *gspca_dev) +{ + int result; + + gspca_dev->usb_buf[0] = 1; + gspca_dev->usb_buf[1] = 0; + result = reg_w(gspca_dev, 2); + if (result < 0) + PDEBUG(D_ERR, "Camera Stop failed"); +} + +/* Include pac common sof detection functions */ +#include "pac_common.h" + +static void sd_pkt_scan(struct gspca_dev *gspca_dev, + struct gspca_frame *frame, /* target */ + __u8 *data, /* isoc packet */ + int len) /* iso packet length */ +{ + unsigned char *sof; + + sof = pac_find_sof(gspca_dev, data, len); + if (sof) { + int n; + + /* finish decoding current frame */ + n = sof - data; + if (n > sizeof pac_sof_marker) + n -= sizeof pac_sof_marker; + else + n = 0; + frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, + data, n); + /* Start next frame. */ + gspca_frame_add(gspca_dev, FIRST_PACKET, frame, + pac_sof_marker, sizeof pac_sof_marker); + len -= sof - data; + data = sof; + } + gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len); +} + +/* sub-driver description */ +static const struct sd_desc sd_desc = { + .name = MODULE_NAME, + .ctrls = sd_ctrls, + .nctrls = ARRAY_SIZE(sd_ctrls), + .config = sd_config, + .init = sd_init, + .start = sd_start, + .stopN = sd_stopN, + .pkt_scan = sd_pkt_scan, +}; + +/* -- module initialisation -- */ +static const __devinitdata struct usb_device_id device_table[] = { + {USB_DEVICE(0x08ca, 0x0111)}, + {} +}; +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 insert / remove -- */ +static int __init sd_mod_init(void) +{ + if (usb_register(&sd_driver) < 0) + return -1; + PDEBUG(D_PROBE, "registered"); + return 0; +} +static void __exit sd_mod_exit(void) +{ + usb_deregister(&sd_driver); + PDEBUG(D_PROBE, "deregistered"); +} + +module_init(sd_mod_init); +module_exit(sd_mod_exit); |