1 /*
2 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
3 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
4 * Copyright (c) 2002, 2003 Tuukka Toivonen
5 * Copyright (c) 2008 Erik Andrén
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * P/N 861037: Sensor HDCS1000 ASIC STV0600
22 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
23 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
24 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
25 * P/N 861075-0040: Sensor HDCS1000 ASIC
26 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
27 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
28 */
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include "stv06xx_vv6410.h"
33
34 static struct v4l2_pix_format vv6410_mode[] = {
35 {
36 356,
37 292,
38 V4L2_PIX_FMT_SGRBG8,
39 V4L2_FIELD_NONE,
40 .sizeimage = 356 * 292,
41 .bytesperline = 356,
42 .colorspace = V4L2_COLORSPACE_SRGB,
43 .priv = 0
44 }
45 };
46
vv6410_s_ctrl(struct v4l2_ctrl * ctrl)47 static int vv6410_s_ctrl(struct v4l2_ctrl *ctrl)
48 {
49 struct gspca_dev *gspca_dev =
50 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
51 int err = -EINVAL;
52
53 switch (ctrl->id) {
54 case V4L2_CID_HFLIP:
55 if (!gspca_dev->streaming)
56 return 0;
57 err = vv6410_set_hflip(gspca_dev, ctrl->val);
58 break;
59 case V4L2_CID_VFLIP:
60 if (!gspca_dev->streaming)
61 return 0;
62 err = vv6410_set_vflip(gspca_dev, ctrl->val);
63 break;
64 case V4L2_CID_GAIN:
65 err = vv6410_set_analog_gain(gspca_dev, ctrl->val);
66 break;
67 case V4L2_CID_EXPOSURE:
68 err = vv6410_set_exposure(gspca_dev, ctrl->val);
69 break;
70 }
71 return err;
72 }
73
74 static const struct v4l2_ctrl_ops vv6410_ctrl_ops = {
75 .s_ctrl = vv6410_s_ctrl,
76 };
77
vv6410_probe(struct sd * sd)78 static int vv6410_probe(struct sd *sd)
79 {
80 u16 data;
81 int err;
82
83 err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
84 if (err < 0)
85 return -ENODEV;
86
87 if (data != 0x19)
88 return -ENODEV;
89
90 pr_info("vv6410 sensor detected\n");
91
92 sd->gspca_dev.cam.cam_mode = vv6410_mode;
93 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
94 return 0;
95 }
96
vv6410_init_controls(struct sd * sd)97 static int vv6410_init_controls(struct sd *sd)
98 {
99 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
100
101 v4l2_ctrl_handler_init(hdl, 2);
102 /* Disable the hardware VFLIP and HFLIP as we currently lack a
103 mechanism to adjust the image offset in such a way that
104 we don't need to renegotiate the announced format */
105 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
106 /* V4L2_CID_HFLIP, 0, 1, 1, 0); */
107 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
108 /* V4L2_CID_VFLIP, 0, 1, 1, 0); */
109 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
110 V4L2_CID_EXPOSURE, 0, 32768, 1, 20000);
111 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
112 V4L2_CID_GAIN, 0, 15, 1, 10);
113 return hdl->error;
114 }
115
vv6410_init(struct sd * sd)116 static int vv6410_init(struct sd *sd)
117 {
118 int err = 0, i;
119
120 for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++)
121 stv06xx_write_bridge(sd, stv_bridge_init[i].addr, stv_bridge_init[i].data);
122
123 if (err < 0)
124 return err;
125
126 err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
127 ARRAY_SIZE(vv6410_sensor_init));
128 return (err < 0) ? err : 0;
129 }
130
vv6410_start(struct sd * sd)131 static int vv6410_start(struct sd *sd)
132 {
133 int err;
134 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
135 struct cam *cam = &sd->gspca_dev.cam;
136 u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
137
138 if (priv & VV6410_SUBSAMPLE) {
139 PDEBUG(D_CONF, "Enabling subsampling");
140 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);
141 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
142
143 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
144 } else {
145 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
146 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
147 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x00);
148
149 }
150
151 /* Turn on LED */
152 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
153 if (err < 0)
154 return err;
155
156 err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
157 if (err < 0)
158 return err;
159
160 PDEBUG(D_STREAM, "Starting stream");
161
162 return 0;
163 }
164
vv6410_stop(struct sd * sd)165 static int vv6410_stop(struct sd *sd)
166 {
167 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
168 int err;
169
170 /* Turn off LED */
171 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
172 if (err < 0)
173 return err;
174
175 err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
176 if (err < 0)
177 return err;
178
179 PDEBUG(D_STREAM, "Halting stream");
180
181 return 0;
182 }
183
vv6410_dump(struct sd * sd)184 static int vv6410_dump(struct sd *sd)
185 {
186 u8 i;
187 int err = 0;
188
189 pr_info("Dumping all vv6410 sensor registers\n");
190 for (i = 0; i < 0xff && !err; i++) {
191 u16 data;
192 err = stv06xx_read_sensor(sd, i, &data);
193 pr_info("Register 0x%x contained 0x%x\n", i, data);
194 }
195 return (err < 0) ? err : 0;
196 }
197
vv6410_set_hflip(struct gspca_dev * gspca_dev,__s32 val)198 static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
199 {
200 int err;
201 u16 i2c_data;
202 struct sd *sd = (struct sd *) gspca_dev;
203
204 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
205 if (err < 0)
206 return err;
207
208 if (val)
209 i2c_data |= VV6410_HFLIP;
210 else
211 i2c_data &= ~VV6410_HFLIP;
212
213 PDEBUG(D_CONF, "Set horizontal flip to %d", val);
214 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
215
216 return (err < 0) ? err : 0;
217 }
218
vv6410_set_vflip(struct gspca_dev * gspca_dev,__s32 val)219 static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
220 {
221 int err;
222 u16 i2c_data;
223 struct sd *sd = (struct sd *) gspca_dev;
224
225 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
226 if (err < 0)
227 return err;
228
229 if (val)
230 i2c_data |= VV6410_VFLIP;
231 else
232 i2c_data &= ~VV6410_VFLIP;
233
234 PDEBUG(D_CONF, "Set vertical flip to %d", val);
235 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
236
237 return (err < 0) ? err : 0;
238 }
239
vv6410_set_analog_gain(struct gspca_dev * gspca_dev,__s32 val)240 static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
241 {
242 int err;
243 struct sd *sd = (struct sd *) gspca_dev;
244
245 PDEBUG(D_CONF, "Set analog gain to %d", val);
246 err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));
247
248 return (err < 0) ? err : 0;
249 }
250
vv6410_set_exposure(struct gspca_dev * gspca_dev,__s32 val)251 static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
252 {
253 int err;
254 struct sd *sd = (struct sd *) gspca_dev;
255 unsigned int fine, coarse;
256
257 val = (val * val >> 14) + val / 4;
258
259 fine = val % VV6410_CIF_LINELENGTH;
260 coarse = min(512, val / VV6410_CIF_LINELENGTH);
261
262 PDEBUG(D_CONF, "Set coarse exposure to %d, fine exposure to %d",
263 coarse, fine);
264
265 err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
266 if (err < 0)
267 goto out;
268
269 err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
270 if (err < 0)
271 goto out;
272
273 err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
274 if (err < 0)
275 goto out;
276
277 err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);
278
279 out:
280 return err;
281 }
282