1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Mars-Semi MR97311A library
4 * Copyright (C) 2005 <bradlch@hotmail.com>
5 *
6 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
7 */
8
9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10
11 #define MODULE_NAME "mars"
12
13 #include "gspca.h"
14 #include "jpeg.h"
15
16 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
17 MODULE_DESCRIPTION("GSPCA/Mars USB Camera Driver");
18 MODULE_LICENSE("GPL");
19
20 #define QUALITY 50
21
22 /* specific webcam descriptor */
23 struct sd {
24 struct gspca_dev gspca_dev; /* !! must be the first item */
25
26 struct v4l2_ctrl *brightness;
27 struct v4l2_ctrl *saturation;
28 struct v4l2_ctrl *sharpness;
29 struct v4l2_ctrl *gamma;
30 struct { /* illuminator control cluster */
31 struct v4l2_ctrl *illum_top;
32 struct v4l2_ctrl *illum_bottom;
33 };
34 u8 jpeg_hdr[JPEG_HDR_SZ];
35 };
36
37 /* V4L2 controls supported by the driver */
38 static void setbrightness(struct gspca_dev *gspca_dev, s32 val);
39 static void setcolors(struct gspca_dev *gspca_dev, s32 val);
40 static void setgamma(struct gspca_dev *gspca_dev, s32 val);
41 static void setsharpness(struct gspca_dev *gspca_dev, s32 val);
42
43 static const struct v4l2_pix_format vga_mode[] = {
44 {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
45 .bytesperline = 320,
46 .sizeimage = 320 * 240 * 3 / 8 + 590,
47 .colorspace = V4L2_COLORSPACE_JPEG,
48 .priv = 2},
49 {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
50 .bytesperline = 640,
51 .sizeimage = 640 * 480 * 3 / 8 + 590,
52 .colorspace = V4L2_COLORSPACE_JPEG,
53 .priv = 1},
54 };
55
56 static const __u8 mi_data[0x20] = {
57 /* 01 02 03 04 05 06 07 08 */
58 0x48, 0x22, 0x01, 0x47, 0x10, 0x00, 0x00, 0x00,
59 /* 09 0a 0b 0c 0d 0e 0f 10 */
60 0x00, 0x01, 0x30, 0x01, 0x30, 0x01, 0x30, 0x01,
61 /* 11 12 13 14 15 16 17 18 */
62 0x30, 0x00, 0x04, 0x00, 0x06, 0x01, 0xe2, 0x02,
63 /* 19 1a 1b 1c 1d 1e 1f 20 */
64 0x82, 0x00, 0x20, 0x17, 0x80, 0x08, 0x0c, 0x00
65 };
66
67 /* write <len> bytes from gspca_dev->usb_buf */
reg_w(struct gspca_dev * gspca_dev,int len)68 static void reg_w(struct gspca_dev *gspca_dev,
69 int len)
70 {
71 int alen, ret;
72
73 if (gspca_dev->usb_err < 0)
74 return;
75
76 ret = usb_bulk_msg(gspca_dev->dev,
77 usb_sndbulkpipe(gspca_dev->dev, 4),
78 gspca_dev->usb_buf,
79 len,
80 &alen,
81 500); /* timeout in milliseconds */
82 if (ret < 0) {
83 pr_err("reg write [%02x] error %d\n",
84 gspca_dev->usb_buf[0], ret);
85 gspca_dev->usb_err = ret;
86 }
87 }
88
mi_w(struct gspca_dev * gspca_dev,u8 addr,u8 value)89 static void mi_w(struct gspca_dev *gspca_dev,
90 u8 addr,
91 u8 value)
92 {
93 gspca_dev->usb_buf[0] = 0x1f;
94 gspca_dev->usb_buf[1] = 0; /* control byte */
95 gspca_dev->usb_buf[2] = addr;
96 gspca_dev->usb_buf[3] = value;
97
98 reg_w(gspca_dev, 4);
99 }
100
setbrightness(struct gspca_dev * gspca_dev,s32 val)101 static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
102 {
103 gspca_dev->usb_buf[0] = 0x61;
104 gspca_dev->usb_buf[1] = val;
105 reg_w(gspca_dev, 2);
106 }
107
setcolors(struct gspca_dev * gspca_dev,s32 val)108 static void setcolors(struct gspca_dev *gspca_dev, s32 val)
109 {
110 gspca_dev->usb_buf[0] = 0x5f;
111 gspca_dev->usb_buf[1] = val << 3;
112 gspca_dev->usb_buf[2] = ((val >> 2) & 0xf8) | 0x04;
113 reg_w(gspca_dev, 3);
114 }
115
setgamma(struct gspca_dev * gspca_dev,s32 val)116 static void setgamma(struct gspca_dev *gspca_dev, s32 val)
117 {
118 gspca_dev->usb_buf[0] = 0x06;
119 gspca_dev->usb_buf[1] = val * 0x40;
120 reg_w(gspca_dev, 2);
121 }
122
setsharpness(struct gspca_dev * gspca_dev,s32 val)123 static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
124 {
125 gspca_dev->usb_buf[0] = 0x67;
126 gspca_dev->usb_buf[1] = val * 4 + 3;
127 reg_w(gspca_dev, 2);
128 }
129
setilluminators(struct gspca_dev * gspca_dev,bool top,bool bottom)130 static void setilluminators(struct gspca_dev *gspca_dev, bool top, bool bottom)
131 {
132 /* both are off if not streaming */
133 gspca_dev->usb_buf[0] = 0x22;
134 if (top)
135 gspca_dev->usb_buf[1] = 0x76;
136 else if (bottom)
137 gspca_dev->usb_buf[1] = 0x7a;
138 else
139 gspca_dev->usb_buf[1] = 0x7e;
140 reg_w(gspca_dev, 2);
141 }
142
mars_s_ctrl(struct v4l2_ctrl * ctrl)143 static int mars_s_ctrl(struct v4l2_ctrl *ctrl)
144 {
145 struct gspca_dev *gspca_dev =
146 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
147 struct sd *sd = (struct sd *)gspca_dev;
148
149 gspca_dev->usb_err = 0;
150
151 if (ctrl->id == V4L2_CID_ILLUMINATORS_1) {
152 /* only one can be on at a time */
153 if (ctrl->is_new && ctrl->val)
154 sd->illum_bottom->val = 0;
155 if (sd->illum_bottom->is_new && sd->illum_bottom->val)
156 sd->illum_top->val = 0;
157 }
158
159 if (!gspca_dev->streaming)
160 return 0;
161
162 switch (ctrl->id) {
163 case V4L2_CID_BRIGHTNESS:
164 setbrightness(gspca_dev, ctrl->val);
165 break;
166 case V4L2_CID_SATURATION:
167 setcolors(gspca_dev, ctrl->val);
168 break;
169 case V4L2_CID_GAMMA:
170 setgamma(gspca_dev, ctrl->val);
171 break;
172 case V4L2_CID_ILLUMINATORS_1:
173 setilluminators(gspca_dev, sd->illum_top->val,
174 sd->illum_bottom->val);
175 break;
176 case V4L2_CID_SHARPNESS:
177 setsharpness(gspca_dev, ctrl->val);
178 break;
179 default:
180 return -EINVAL;
181 }
182 return gspca_dev->usb_err;
183 }
184
185 static const struct v4l2_ctrl_ops mars_ctrl_ops = {
186 .s_ctrl = mars_s_ctrl,
187 };
188
189 /* this function is called at probe time */
sd_init_controls(struct gspca_dev * gspca_dev)190 static int sd_init_controls(struct gspca_dev *gspca_dev)
191 {
192 struct sd *sd = (struct sd *) gspca_dev;
193 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
194
195 gspca_dev->vdev.ctrl_handler = hdl;
196 v4l2_ctrl_handler_init(hdl, 6);
197 sd->brightness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
198 V4L2_CID_BRIGHTNESS, 0, 30, 1, 15);
199 sd->saturation = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
200 V4L2_CID_SATURATION, 0, 255, 1, 200);
201 sd->gamma = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
202 V4L2_CID_GAMMA, 0, 3, 1, 1);
203 sd->sharpness = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
204 V4L2_CID_SHARPNESS, 0, 2, 1, 1);
205 sd->illum_top = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
206 V4L2_CID_ILLUMINATORS_1, 0, 1, 1, 0);
207 sd->illum_top->flags |= V4L2_CTRL_FLAG_UPDATE;
208 sd->illum_bottom = v4l2_ctrl_new_std(hdl, &mars_ctrl_ops,
209 V4L2_CID_ILLUMINATORS_2, 0, 1, 1, 0);
210 sd->illum_bottom->flags |= V4L2_CTRL_FLAG_UPDATE;
211 if (hdl->error) {
212 pr_err("Could not initialize controls\n");
213 return hdl->error;
214 }
215 v4l2_ctrl_cluster(2, &sd->illum_top);
216 return 0;
217 }
218
219 /* this function is called at probe time */
sd_config(struct gspca_dev * gspca_dev,const struct usb_device_id * id)220 static int sd_config(struct gspca_dev *gspca_dev,
221 const struct usb_device_id *id)
222 {
223 struct cam *cam;
224
225 cam = &gspca_dev->cam;
226 cam->cam_mode = vga_mode;
227 cam->nmodes = ARRAY_SIZE(vga_mode);
228 return 0;
229 }
230
231 /* this function is called at probe and resume time */
sd_init(struct gspca_dev * gspca_dev)232 static int sd_init(struct gspca_dev *gspca_dev)
233 {
234 return 0;
235 }
236
sd_start(struct gspca_dev * gspca_dev)237 static int sd_start(struct gspca_dev *gspca_dev)
238 {
239 struct sd *sd = (struct sd *) gspca_dev;
240 u8 *data;
241 int i;
242
243 /* create the JPEG header */
244 jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
245 gspca_dev->pixfmt.width,
246 0x21); /* JPEG 422 */
247 jpeg_set_qual(sd->jpeg_hdr, QUALITY);
248
249 data = gspca_dev->usb_buf;
250
251 data[0] = 0x01; /* address */
252 data[1] = 0x01;
253 reg_w(gspca_dev, 2);
254
255 /*
256 Initialize the MR97113 chip register
257 */
258 data[0] = 0x00; /* address */
259 data[1] = 0x0c | 0x01; /* reg 0 */
260 data[2] = 0x01; /* reg 1 */
261 data[3] = gspca_dev->pixfmt.width / 8; /* h_size , reg 2 */
262 data[4] = gspca_dev->pixfmt.height / 8; /* v_size , reg 3 */
263 data[5] = 0x30; /* reg 4, MI, PAS5101 :
264 * 0x30 for 24mhz , 0x28 for 12mhz */
265 data[6] = 0x02; /* reg 5, H start - was 0x04 */
266 data[7] = v4l2_ctrl_g_ctrl(sd->gamma) * 0x40; /* reg 0x06: gamma */
267 data[8] = 0x01; /* reg 7, V start - was 0x03 */
268 /* if (h_size == 320 ) */
269 /* data[9]= 0x56; * reg 8, 24MHz, 2:1 scale down */
270 /* else */
271 data[9] = 0x52; /* reg 8, 24MHz, no scale down */
272 /*jfm: from win trace*/
273 data[10] = 0x18;
274
275 reg_w(gspca_dev, 11);
276
277 data[0] = 0x23; /* address */
278 data[1] = 0x09; /* reg 35, append frame header */
279
280 reg_w(gspca_dev, 2);
281
282 data[0] = 0x3c; /* address */
283 /* if (gspca_dev->width == 1280) */
284 /* data[1] = 200; * reg 60, pc-cam frame size
285 * (unit: 4KB) 800KB */
286 /* else */
287 data[1] = 50; /* 50 reg 60, pc-cam frame size
288 * (unit: 4KB) 200KB */
289 reg_w(gspca_dev, 2);
290
291 /* auto dark-gain */
292 data[0] = 0x5e; /* address */
293 data[1] = 0; /* reg 94, Y Gain (auto) */
294 /*jfm: from win trace*/
295 /* reg 0x5f/0x60 (LE) = saturation */
296 /* h (60): xxxx x100
297 * l (5f): xxxx x000 */
298 data[2] = v4l2_ctrl_g_ctrl(sd->saturation) << 3;
299 data[3] = ((v4l2_ctrl_g_ctrl(sd->saturation) >> 2) & 0xf8) | 0x04;
300 data[4] = v4l2_ctrl_g_ctrl(sd->brightness); /* reg 0x61 = brightness */
301 data[5] = 0x00;
302
303 reg_w(gspca_dev, 6);
304
305 data[0] = 0x67;
306 /*jfm: from win trace*/
307 data[1] = v4l2_ctrl_g_ctrl(sd->sharpness) * 4 + 3;
308 data[2] = 0x14;
309 reg_w(gspca_dev, 3);
310
311 data[0] = 0x69;
312 data[1] = 0x2f;
313 data[2] = 0x28;
314 data[3] = 0x42;
315 reg_w(gspca_dev, 4);
316
317 data[0] = 0x63;
318 data[1] = 0x07;
319 reg_w(gspca_dev, 2);
320 /*jfm: win trace - many writes here to reg 0x64*/
321
322 /* initialize the MI sensor */
323 for (i = 0; i < sizeof mi_data; i++)
324 mi_w(gspca_dev, i + 1, mi_data[i]);
325
326 data[0] = 0x00;
327 data[1] = 0x4d; /* ISOC transferring enable... */
328 reg_w(gspca_dev, 2);
329
330 setilluminators(gspca_dev, v4l2_ctrl_g_ctrl(sd->illum_top),
331 v4l2_ctrl_g_ctrl(sd->illum_bottom));
332
333 return gspca_dev->usb_err;
334 }
335
sd_stopN(struct gspca_dev * gspca_dev)336 static void sd_stopN(struct gspca_dev *gspca_dev)
337 {
338 struct sd *sd = (struct sd *) gspca_dev;
339
340 if (v4l2_ctrl_g_ctrl(sd->illum_top) ||
341 v4l2_ctrl_g_ctrl(sd->illum_bottom)) {
342 setilluminators(gspca_dev, false, false);
343 msleep(20);
344 }
345
346 gspca_dev->usb_buf[0] = 1;
347 gspca_dev->usb_buf[1] = 0;
348 reg_w(gspca_dev, 2);
349 }
350
sd_pkt_scan(struct gspca_dev * gspca_dev,u8 * data,int len)351 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
352 u8 *data, /* isoc packet */
353 int len) /* iso packet length */
354 {
355 struct sd *sd = (struct sd *) gspca_dev;
356 int p;
357
358 if (len < 6) {
359 /* gspca_dev->last_packet_type = DISCARD_PACKET; */
360 return;
361 }
362 for (p = 0; p < len - 6; p++) {
363 if (data[0 + p] == 0xff
364 && data[1 + p] == 0xff
365 && data[2 + p] == 0x00
366 && data[3 + p] == 0xff
367 && data[4 + p] == 0x96) {
368 if (data[5 + p] == 0x64
369 || data[5 + p] == 0x65
370 || data[5 + p] == 0x66
371 || data[5 + p] == 0x67) {
372 gspca_dbg(gspca_dev, D_PACK, "sof offset: %d len: %d\n",
373 p, len);
374 gspca_frame_add(gspca_dev, LAST_PACKET,
375 data, p);
376
377 /* put the JPEG header */
378 gspca_frame_add(gspca_dev, FIRST_PACKET,
379 sd->jpeg_hdr, JPEG_HDR_SZ);
380 data += p + 16;
381 len -= p + 16;
382 break;
383 }
384 }
385 }
386 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
387 }
388
389 /* sub-driver description */
390 static const struct sd_desc sd_desc = {
391 .name = MODULE_NAME,
392 .config = sd_config,
393 .init = sd_init,
394 .init_controls = sd_init_controls,
395 .start = sd_start,
396 .stopN = sd_stopN,
397 .pkt_scan = sd_pkt_scan,
398 };
399
400 /* -- module initialisation -- */
401 static const struct usb_device_id device_table[] = {
402 {USB_DEVICE(0x093a, 0x050f)},
403 {}
404 };
405 MODULE_DEVICE_TABLE(usb, device_table);
406
407 /* -- device connect -- */
sd_probe(struct usb_interface * intf,const struct usb_device_id * id)408 static int sd_probe(struct usb_interface *intf,
409 const struct usb_device_id *id)
410 {
411 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
412 THIS_MODULE);
413 }
414
415 static struct usb_driver sd_driver = {
416 .name = MODULE_NAME,
417 .id_table = device_table,
418 .probe = sd_probe,
419 .disconnect = gspca_disconnect,
420 #ifdef CONFIG_PM
421 .suspend = gspca_suspend,
422 .resume = gspca_resume,
423 .reset_resume = gspca_resume,
424 #endif
425 };
426
427 module_usb_driver(sd_driver);
428