diff options
Diffstat (limited to 'drivers/media/video/gspca/stv0680.c')
-rw-r--r-- | drivers/media/video/gspca/stv0680.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/stv0680.c b/drivers/media/video/gspca/stv0680.c new file mode 100644 index 00000000000..e2ef41cf72d --- /dev/null +++ b/drivers/media/video/gspca/stv0680.c | |||
@@ -0,0 +1,367 @@ | |||
1 | /* | ||
2 | * STV0680 USB Camera Driver | ||
3 | * | ||
4 | * Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com> | ||
5 | * | ||
6 | * This module is adapted from the in kernel v4l1 stv680 driver: | ||
7 | * | ||
8 | * STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net) | ||
9 | * | ||
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. | ||
13 | * | ||
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. | ||
18 | * | ||
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. | ||
23 | * | ||
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 | ||
27 | * | ||
28 | */ | ||
29 | |||
30 | #define MODULE_NAME "stv0680" | ||
31 | |||
32 | #include "gspca.h" | ||
33 | |||
34 | MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); | ||
35 | MODULE_DESCRIPTION("STV0680 USB Camera Driver"); | ||
36 | MODULE_LICENSE("GPL"); | ||
37 | |||
38 | /* specific webcam descriptor */ | ||
39 | struct sd { | ||
40 | struct gspca_dev gspca_dev; /* !! must be the first item */ | ||
41 | struct v4l2_pix_format mode; | ||
42 | u8 orig_mode; | ||
43 | u8 video_mode; | ||
44 | u8 current_mode; | ||
45 | }; | ||
46 | |||
47 | /* V4L2 controls supported by the driver */ | ||
48 | static const struct ctrl sd_ctrls[] = { | ||
49 | }; | ||
50 | |||
51 | static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val, | ||
52 | int size) | ||
53 | { | ||
54 | int ret = -1; | ||
55 | u8 req_type = 0; | ||
56 | unsigned int pipe = 0; | ||
57 | |||
58 | switch (set) { | ||
59 | case 0: /* 0xc1 */ | ||
60 | req_type = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; | ||
61 | pipe = usb_rcvctrlpipe(gspca_dev->dev, 0); | ||
62 | break; | ||
63 | case 1: /* 0x41 */ | ||
64 | req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; | ||
65 | pipe = usb_sndctrlpipe(gspca_dev->dev, 0); | ||
66 | break; | ||
67 | case 2: /* 0x80 */ | ||
68 | req_type = USB_DIR_IN | USB_RECIP_DEVICE; | ||
69 | pipe = usb_rcvctrlpipe(gspca_dev->dev, 0); | ||
70 | break; | ||
71 | case 3: /* 0x40 */ | ||
72 | req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; | ||
73 | pipe = usb_sndctrlpipe(gspca_dev->dev, 0); | ||
74 | break; | ||
75 | } | ||
76 | |||
77 | ret = usb_control_msg(gspca_dev->dev, pipe, | ||
78 | req, req_type, | ||
79 | val, 0, gspca_dev->usb_buf, size, 500); | ||
80 | |||
81 | if ((ret < 0) && (req != 0x0a)) | ||
82 | err("usb_control_msg error %i, request = 0x%x, error = %i", | ||
83 | set, req, ret); | ||
84 | |||
85 | return ret; | ||
86 | } | ||
87 | |||
88 | static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret) | ||
89 | { | ||
90 | stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */ | ||
91 | PDEBUG(D_ERR, "last error: %i, command = 0x%x", | ||
92 | gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]); | ||
93 | return ret; | ||
94 | } | ||
95 | |||
96 | static int stv0680_get_video_mode(struct gspca_dev *gspca_dev) | ||
97 | { | ||
98 | /* Note not sure if this init of usb_buf is really necessary */ | ||
99 | memset(gspca_dev->usb_buf, 0, 8); | ||
100 | gspca_dev->usb_buf[0] = 0x0f; | ||
101 | |||
102 | if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) { | ||
103 | PDEBUG(D_ERR, "Get_Camera_Mode failed"); | ||
104 | return stv0680_handle_error(gspca_dev, -EIO); | ||
105 | } | ||
106 | |||
107 | return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */ | ||
108 | } | ||
109 | |||
110 | static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode) | ||
111 | { | ||
112 | struct sd *sd = (struct sd *) gspca_dev; | ||
113 | |||
114 | if (sd->current_mode == mode) | ||
115 | return 0; | ||
116 | |||
117 | memset(gspca_dev->usb_buf, 0, 8); | ||
118 | gspca_dev->usb_buf[0] = mode; | ||
119 | |||
120 | if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) { | ||
121 | PDEBUG(D_ERR, "Set_Camera_Mode failed"); | ||
122 | return stv0680_handle_error(gspca_dev, -EIO); | ||
123 | } | ||
124 | |||
125 | /* Verify we got what we've asked for */ | ||
126 | if (stv0680_get_video_mode(gspca_dev) != mode) { | ||
127 | PDEBUG(D_ERR, "Error setting camera video mode!"); | ||
128 | return -EIO; | ||
129 | } | ||
130 | |||
131 | sd->current_mode = mode; | ||
132 | |||
133 | return 0; | ||
134 | } | ||
135 | |||
136 | /* this function is called at probe time */ | ||
137 | static int sd_config(struct gspca_dev *gspca_dev, | ||
138 | const struct usb_device_id *id) | ||
139 | { | ||
140 | int ret; | ||
141 | struct sd *sd = (struct sd *) gspca_dev; | ||
142 | struct cam *cam = &gspca_dev->cam; | ||
143 | |||
144 | /* Give the camera some time to settle, otherwise initalization will | ||
145 | fail on hotplug, and yes it really needs a full second. */ | ||
146 | msleep(1000); | ||
147 | |||
148 | /* ping camera to be sure STV0680 is present */ | ||
149 | if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 || | ||
150 | gspca_dev->usb_buf[0] != 0x56 || gspca_dev->usb_buf[1] != 0x78) { | ||
151 | PDEBUG(D_ERR, "STV(e): camera ping failed!!"); | ||
152 | return stv0680_handle_error(gspca_dev, -ENODEV); | ||
153 | } | ||
154 | |||
155 | /* get camera descriptor */ | ||
156 | if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09) | ||
157 | return stv0680_handle_error(gspca_dev, -ENODEV); | ||
158 | |||
159 | if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 || | ||
160 | gspca_dev->usb_buf[7] != 0xa0 || gspca_dev->usb_buf[8] != 0x23) { | ||
161 | PDEBUG(D_ERR, "Could not get descriptor 0200."); | ||
162 | return stv0680_handle_error(gspca_dev, -ENODEV); | ||
163 | } | ||
164 | if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02) | ||
165 | return stv0680_handle_error(gspca_dev, -ENODEV); | ||
166 | if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24) | ||
167 | return stv0680_handle_error(gspca_dev, -ENODEV); | ||
168 | if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10) | ||
169 | return stv0680_handle_error(gspca_dev, -ENODEV); | ||
170 | |||
171 | if (!(gspca_dev->usb_buf[7] & 0x09)) { | ||
172 | PDEBUG(D_ERR, "Camera supports neither CIF nor QVGA mode"); | ||
173 | return -ENODEV; | ||
174 | } | ||
175 | if (gspca_dev->usb_buf[7] & 0x01) | ||
176 | PDEBUG(D_PROBE, "Camera supports CIF mode"); | ||
177 | if (gspca_dev->usb_buf[7] & 0x02) | ||
178 | PDEBUG(D_PROBE, "Camera supports VGA mode"); | ||
179 | if (gspca_dev->usb_buf[7] & 0x04) | ||
180 | PDEBUG(D_PROBE, "Camera supports QCIF mode"); | ||
181 | if (gspca_dev->usb_buf[7] & 0x08) | ||
182 | PDEBUG(D_PROBE, "Camera supports QVGA mode"); | ||
183 | |||
184 | if (gspca_dev->usb_buf[7] & 0x01) | ||
185 | sd->video_mode = 0x00; /* CIF */ | ||
186 | else | ||
187 | sd->video_mode = 0x03; /* QVGA */ | ||
188 | |||
189 | /* FW rev, ASIC rev, sensor ID */ | ||
190 | PDEBUG(D_PROBE, "Firmware rev is %i.%i", | ||
191 | gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]); | ||
192 | PDEBUG(D_PROBE, "ASIC rev is %i.%i", | ||
193 | gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]); | ||
194 | PDEBUG(D_PROBE, "Sensor ID is %i", | ||
195 | (gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4)); | ||
196 | |||
197 | |||
198 | ret = stv0680_get_video_mode(gspca_dev); | ||
199 | if (ret < 0) | ||
200 | return ret; | ||
201 | sd->current_mode = sd->orig_mode = ret; | ||
202 | |||
203 | ret = stv0680_set_video_mode(gspca_dev, sd->video_mode); | ||
204 | if (ret < 0) | ||
205 | return ret; | ||
206 | |||
207 | /* Get mode details */ | ||
208 | if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10) | ||
209 | return stv0680_handle_error(gspca_dev, -EIO); | ||
210 | |||
211 | cam->bulk = 1; | ||
212 | cam->bulk_nurbs = 1; /* The cam cannot handle more */ | ||
213 | cam->bulk_size = (gspca_dev->usb_buf[0] << 24) | | ||
214 | (gspca_dev->usb_buf[1] << 16) | | ||
215 | (gspca_dev->usb_buf[2] << 8) | | ||
216 | (gspca_dev->usb_buf[3]); | ||
217 | sd->mode.width = (gspca_dev->usb_buf[4] << 8) | | ||
218 | (gspca_dev->usb_buf[5]); /* 322, 356, 644 */ | ||
219 | sd->mode.height = (gspca_dev->usb_buf[6] << 8) | | ||
220 | (gspca_dev->usb_buf[7]); /* 242, 292, 484 */ | ||
221 | sd->mode.pixelformat = V4L2_PIX_FMT_STV0680; | ||
222 | sd->mode.field = V4L2_FIELD_NONE; | ||
223 | sd->mode.bytesperline = sd->mode.width; | ||
224 | sd->mode.sizeimage = cam->bulk_size; | ||
225 | sd->mode.colorspace = V4L2_COLORSPACE_SRGB; | ||
226 | |||
227 | /* origGain = gspca_dev->usb_buf[12]; */ | ||
228 | |||
229 | cam->cam_mode = &sd->mode; | ||
230 | cam->nmodes = 1; | ||
231 | |||
232 | |||
233 | ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode); | ||
234 | if (ret < 0) | ||
235 | return ret; | ||
236 | |||
237 | if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 || | ||
238 | gspca_dev->usb_buf[8] != 0x53 || gspca_dev->usb_buf[9] != 0x05) { | ||
239 | err("Could not get descriptor 0100."); | ||
240 | return stv0680_handle_error(gspca_dev, -EIO); | ||
241 | } | ||
242 | |||
243 | return 0; | ||
244 | } | ||
245 | |||
246 | /* this function is called at probe and resume time */ | ||
247 | static int sd_init(struct gspca_dev *gspca_dev) | ||
248 | { | ||
249 | return 0; | ||
250 | } | ||
251 | |||
252 | /* -- start the camera -- */ | ||
253 | static int sd_start(struct gspca_dev *gspca_dev) | ||
254 | { | ||
255 | int ret; | ||
256 | struct sd *sd = (struct sd *) gspca_dev; | ||
257 | |||
258 | ret = stv0680_set_video_mode(gspca_dev, sd->video_mode); | ||
259 | if (ret < 0) | ||
260 | return ret; | ||
261 | |||
262 | if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10) | ||
263 | return stv0680_handle_error(gspca_dev, -EIO); | ||
264 | |||
265 | /* Start stream at: | ||
266 | 0x0000 = CIF (352x288) | ||
267 | 0x0100 = VGA (640x480) | ||
268 | 0x0300 = QVGA (320x240) */ | ||
269 | if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0) | ||
270 | return stv0680_handle_error(gspca_dev, -EIO); | ||
271 | |||
272 | return 0; | ||
273 | } | ||
274 | |||
275 | static void sd_stopN(struct gspca_dev *gspca_dev) | ||
276 | { | ||
277 | /* This is a high priority command; it stops all lower order cmds */ | ||
278 | if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0) | ||
279 | stv0680_handle_error(gspca_dev, -EIO); | ||
280 | } | ||
281 | |||
282 | static void sd_stop0(struct gspca_dev *gspca_dev) | ||
283 | { | ||
284 | struct sd *sd = (struct sd *) gspca_dev; | ||
285 | |||
286 | if (!sd->gspca_dev.present) | ||
287 | return; | ||
288 | |||
289 | stv0680_set_video_mode(gspca_dev, sd->orig_mode); | ||
290 | } | ||
291 | |||
292 | static void sd_pkt_scan(struct gspca_dev *gspca_dev, | ||
293 | u8 *data, | ||
294 | int len) | ||
295 | { | ||
296 | struct sd *sd = (struct sd *) gspca_dev; | ||
297 | |||
298 | /* Every now and then the camera sends a 16 byte packet, no idea | ||
299 | what it contains, but it is not image data, when this | ||
300 | happens the frame received before this packet is corrupt, | ||
301 | so discard it. */ | ||
302 | if (len != sd->mode.sizeimage) { | ||
303 | gspca_dev->last_packet_type = DISCARD_PACKET; | ||
304 | return; | ||
305 | } | ||
306 | |||
307 | /* Finish the previous frame, we do this upon reception of the next | ||
308 | packet, even though it is already complete so that the strange 16 | ||
309 | byte packets send after a corrupt frame can discard it. */ | ||
310 | gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); | ||
311 | |||
312 | /* Store the just received frame */ | ||
313 | gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); | ||
314 | } | ||
315 | |||
316 | /* sub-driver description */ | ||
317 | static const struct sd_desc sd_desc = { | ||
318 | .name = MODULE_NAME, | ||
319 | .ctrls = sd_ctrls, | ||
320 | .nctrls = ARRAY_SIZE(sd_ctrls), | ||
321 | .config = sd_config, | ||
322 | .init = sd_init, | ||
323 | .start = sd_start, | ||
324 | .stopN = sd_stopN, | ||
325 | .stop0 = sd_stop0, | ||
326 | .pkt_scan = sd_pkt_scan, | ||
327 | }; | ||
328 | |||
329 | /* -- module initialisation -- */ | ||
330 | static const struct usb_device_id device_table[] = { | ||
331 | {USB_DEVICE(0x0553, 0x0202)}, | ||
332 | {USB_DEVICE(0x041e, 0x4007)}, | ||
333 | {} | ||
334 | }; | ||
335 | MODULE_DEVICE_TABLE(usb, device_table); | ||
336 | |||
337 | /* -- device connect -- */ | ||
338 | static int sd_probe(struct usb_interface *intf, | ||
339 | const struct usb_device_id *id) | ||
340 | { | ||
341 | return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), | ||
342 | THIS_MODULE); | ||
343 | } | ||
344 | |||
345 | static struct usb_driver sd_driver = { | ||
346 | .name = MODULE_NAME, | ||
347 | .id_table = device_table, | ||
348 | .probe = sd_probe, | ||
349 | .disconnect = gspca_disconnect, | ||
350 | #ifdef CONFIG_PM | ||
351 | .suspend = gspca_suspend, | ||
352 | .resume = gspca_resume, | ||
353 | #endif | ||
354 | }; | ||
355 | |||
356 | /* -- module insert / remove -- */ | ||
357 | static int __init sd_mod_init(void) | ||
358 | { | ||
359 | return usb_register(&sd_driver); | ||
360 | } | ||
361 | static void __exit sd_mod_exit(void) | ||
362 | { | ||
363 | usb_deregister(&sd_driver); | ||
364 | } | ||
365 | |||
366 | module_init(sd_mod_init); | ||
367 | module_exit(sd_mod_exit); | ||