• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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