2 * STV0680 USB Camera Driver
4 * Copyright (C) 2009 Hans de Goede <hdgoede@redhat.com>
6 * This module is adapted from the in kernel v4l1 stv680 driver:
8 * STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
10 * Thanks to STMicroelectronics for information on the usb commands, and
11 * to Steve Miller at STM for his help and encouragement while I was
12 * writing this driver.
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #define MODULE_NAME "stv0680"
34 MODULE_AUTHOR("Hans de Goede <hdgoede@redhat.com>");
35 MODULE_DESCRIPTION("STV0680 USB Camera Driver");
36 MODULE_LICENSE("GPL");
38 /* specific webcam descriptor */
40 struct gspca_dev gspca_dev; /* !! must be the first item */
41 struct v4l2_pix_format mode;
47 /* V4L2 controls supported by the driver */
48 static struct ctrl sd_ctrls[] = {
51 static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
59 req_type = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
62 req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
65 req_type = USB_DIR_IN | USB_RECIP_DEVICE;
68 req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
72 ret = usb_control_msg(gspca_dev->dev,
73 usb_rcvctrlpipe(gspca_dev->dev, 0),
75 val, 0, gspca_dev->usb_buf, size, 500);
77 if ((ret < 0) && (req != 0x0a))
79 "usb_control_msg error %i, request = 0x%x, error = %i",
85 static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
87 stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
88 PDEBUG(D_ERR, "last error: %i, command = 0x%x",
89 gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
93 static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
95 /* Note not sure if this init of usb_buf is really necessary */
96 memset(gspca_dev->usb_buf, 0, 8);
97 gspca_dev->usb_buf[0] = 0x0f;
99 if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
100 PDEBUG(D_ERR, "Get_Camera_Mode failed");
101 return stv0680_handle_error(gspca_dev, -EIO);
104 return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
107 static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
109 struct sd *sd = (struct sd *) gspca_dev;
111 if (sd->current_mode == mode)
114 memset(gspca_dev->usb_buf, 0, 8);
115 gspca_dev->usb_buf[0] = mode;
117 if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
118 PDEBUG(D_ERR, "Set_Camera_Mode failed");
119 return stv0680_handle_error(gspca_dev, -EIO);
122 /* Verify we got what we've asked for */
123 if (stv0680_get_video_mode(gspca_dev) != mode) {
124 PDEBUG(D_ERR, "Error setting camera video mode!");
128 sd->current_mode = mode;
133 /* this function is called at probe time */
134 static int sd_config(struct gspca_dev *gspca_dev,
135 const struct usb_device_id *id)
138 struct sd *sd = (struct sd *) gspca_dev;
139 struct cam *cam = &gspca_dev->cam;
141 /* ping camera to be sure STV0680 is present */
142 if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 ||
143 gspca_dev->usb_buf[0] != 0x56 || gspca_dev->usb_buf[1] != 0x78) {
144 PDEBUG(D_ERR, "STV(e): camera ping failed!!");
145 return stv0680_handle_error(gspca_dev, -ENODEV);
148 /* get camera descriptor */
149 if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
150 return stv0680_handle_error(gspca_dev, -ENODEV);
152 if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 ||
153 gspca_dev->usb_buf[7] != 0xa0 || gspca_dev->usb_buf[8] != 0x23) {
154 PDEBUG(D_ERR, "Could not get descriptor 0200.");
155 return stv0680_handle_error(gspca_dev, -ENODEV);
157 if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
158 return stv0680_handle_error(gspca_dev, -ENODEV);
159 if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
160 return stv0680_handle_error(gspca_dev, -ENODEV);
161 if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
162 return stv0680_handle_error(gspca_dev, -ENODEV);
164 if (!(gspca_dev->usb_buf[7] & 0x09)) {
165 PDEBUG(D_ERR, "Camera supports neither CIF nor QVGA mode");
168 if (gspca_dev->usb_buf[7] & 0x01)
169 PDEBUG(D_PROBE, "Camera supports CIF mode");
170 if (gspca_dev->usb_buf[7] & 0x02)
171 PDEBUG(D_PROBE, "Camera supports VGA mode");
172 if (gspca_dev->usb_buf[7] & 0x08)
173 PDEBUG(D_PROBE, "Camera supports QVGA mode");
175 if (gspca_dev->usb_buf[7] & 0x01)
176 sd->video_mode = 0x00; /* CIF */
178 sd->video_mode = 0x03; /* QVGA */
180 /* FW rev, ASIC rev, sensor ID */
181 PDEBUG(D_PROBE, "Firmware rev is %i.%i",
182 gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
183 PDEBUG(D_PROBE, "ASIC rev is %i.%i",
184 gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
185 PDEBUG(D_PROBE, "Sensor ID is %i",
186 (gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));
189 ret = stv0680_get_video_mode(gspca_dev);
192 sd->current_mode = sd->orig_mode = ret;
194 ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
198 /* Get mode details */
199 if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
200 return stv0680_handle_error(gspca_dev, -EIO);
203 cam->bulk_nurbs = 1; /* The cam cannot handle more */
204 cam->bulk_size = (gspca_dev->usb_buf[0] << 24) |
205 (gspca_dev->usb_buf[1] << 16) |
206 (gspca_dev->usb_buf[2] << 8) |
207 (gspca_dev->usb_buf[3]);
208 sd->mode.width = (gspca_dev->usb_buf[4] << 8) |
209 (gspca_dev->usb_buf[5]); /* 322, 356, 644 */
210 sd->mode.height = (gspca_dev->usb_buf[6] << 8) |
211 (gspca_dev->usb_buf[7]); /* 242, 292, 484 */
212 sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
213 sd->mode.field = V4L2_FIELD_NONE;
214 sd->mode.bytesperline = sd->mode.width;
215 sd->mode.sizeimage = cam->bulk_size;
216 sd->mode.colorspace = V4L2_COLORSPACE_SRGB;
218 /* origGain = gspca_dev->usb_buf[12]; */
220 cam->cam_mode = &sd->mode;
224 ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
228 if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 ||
229 gspca_dev->usb_buf[8] != 0x53 || gspca_dev->usb_buf[9] != 0x05) {
230 PDEBUG(D_ERR, "Could not get descriptor 0100.");
231 return stv0680_handle_error(gspca_dev, -EIO);
237 /* this function is called at probe and resume time */
238 static int sd_init(struct gspca_dev *gspca_dev)
243 /* -- start the camera -- */
244 static int sd_start(struct gspca_dev *gspca_dev)
247 struct sd *sd = (struct sd *) gspca_dev;
249 ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
253 if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
254 return stv0680_handle_error(gspca_dev, -EIO);
257 0x0000 = CIF (352x288)
258 0x0100 = VGA (640x480)
259 0x0300 = QVGA (320x240) */
260 if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
261 return stv0680_handle_error(gspca_dev, -EIO);
266 static void sd_stopN(struct gspca_dev *gspca_dev)
268 /* This is a high priority command; it stops all lower order cmds */
269 if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
270 stv0680_handle_error(gspca_dev, -EIO);
273 static void sd_stop0(struct gspca_dev *gspca_dev)
275 struct sd *sd = (struct sd *) gspca_dev;
277 if (!sd->gspca_dev.present)
280 stv0680_set_video_mode(gspca_dev, sd->orig_mode);
283 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
287 struct sd *sd = (struct sd *) gspca_dev;
289 /* Every now and then the camera sends a 16 byte packet, no idea
290 what it contains, but it is not image data, when this
291 happens the frame received before this packet is corrupt,
293 if (len != sd->mode.sizeimage) {
294 gspca_dev->last_packet_type = DISCARD_PACKET;
298 /* Finish the previous frame, we do this upon reception of the next
299 packet, even though it is already complete so that the strange 16
300 byte packets send after a corrupt frame can discard it. */
301 gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
303 /* Store the just received frame */
304 gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
307 /* sub-driver description */
308 static const struct sd_desc sd_desc = {
311 .nctrls = ARRAY_SIZE(sd_ctrls),
317 .pkt_scan = sd_pkt_scan,
320 /* -- module initialisation -- */
321 static const __devinitdata struct usb_device_id device_table[] = {
322 {USB_DEVICE(0x0553, 0x0202)},
323 {USB_DEVICE(0x041e, 0x4007)},
326 MODULE_DEVICE_TABLE(usb, device_table);
328 /* -- device connect -- */
329 static int sd_probe(struct usb_interface *intf,
330 const struct usb_device_id *id)
332 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
336 static struct usb_driver sd_driver = {
338 .id_table = device_table,
340 .disconnect = gspca_disconnect,
342 .suspend = gspca_suspend,
343 .resume = gspca_resume,
347 /* -- module insert / remove -- */
348 static int __init sd_mod_init(void)
351 ret = usb_register(&sd_driver);
354 PDEBUG(D_PROBE, "registered");
357 static void __exit sd_mod_exit(void)
359 usb_deregister(&sd_driver);
360 PDEBUG(D_PROBE, "deregistered");
363 module_init(sd_mod_init);
364 module_exit(sd_mod_exit);