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
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.
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.
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
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
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include "stv06xx_vv6410.h"
34 static struct v4l2_pix_format vv6410_mode[] = {
40 .sizeimage = 356 * 292,
42 .colorspace = V4L2_COLORSPACE_SRGB,
47 static int vv6410_s_ctrl(struct v4l2_ctrl *ctrl)
49 struct gspca_dev *gspca_dev =
50 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
55 if (!gspca_dev->streaming)
57 err = vv6410_set_hflip(gspca_dev, ctrl->val);
60 if (!gspca_dev->streaming)
62 err = vv6410_set_vflip(gspca_dev, ctrl->val);
65 err = vv6410_set_analog_gain(gspca_dev, ctrl->val);
67 case V4L2_CID_EXPOSURE:
68 err = vv6410_set_exposure(gspca_dev, ctrl->val);
74 static const struct v4l2_ctrl_ops vv6410_ctrl_ops = {
75 .s_ctrl = vv6410_s_ctrl,
78 static int vv6410_probe(struct sd *sd)
83 err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
90 pr_info("vv6410 sensor detected\n");
92 sd->gspca_dev.cam.cam_mode = vv6410_mode;
93 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
97 static int vv6410_init_controls(struct sd *sd)
99 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
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);
116 static int vv6410_init(struct sd *sd)
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);
126 err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
127 ARRAY_SIZE(vv6410_sensor_init));
128 return (err < 0) ? err : 0;
131 static int vv6410_start(struct sd *sd)
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;
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);
143 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
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);
152 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
156 err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
160 PDEBUG(D_STREAM, "Starting stream");
165 static int vv6410_stop(struct sd *sd)
167 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
171 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
175 err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
179 PDEBUG(D_STREAM, "Halting stream");
184 static int vv6410_dump(struct sd *sd)
189 pr_info("Dumping all vv6410 sensor registers\n");
190 for (i = 0; i < 0xff && !err; i++) {
192 err = stv06xx_read_sensor(sd, i, &data);
193 pr_info("Register 0x%x contained 0x%x\n", i, data);
195 return (err < 0) ? err : 0;
198 static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
202 struct sd *sd = (struct sd *) gspca_dev;
204 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
209 i2c_data |= VV6410_HFLIP;
211 i2c_data &= ~VV6410_HFLIP;
213 PDEBUG(D_CONF, "Set horizontal flip to %d", val);
214 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
216 return (err < 0) ? err : 0;
219 static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
223 struct sd *sd = (struct sd *) gspca_dev;
225 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
230 i2c_data |= VV6410_VFLIP;
232 i2c_data &= ~VV6410_VFLIP;
234 PDEBUG(D_CONF, "Set vertical flip to %d", val);
235 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
237 return (err < 0) ? err : 0;
240 static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
243 struct sd *sd = (struct sd *) gspca_dev;
245 PDEBUG(D_CONF, "Set analog gain to %d", val);
246 err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));
248 return (err < 0) ? err : 0;
251 static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
254 struct sd *sd = (struct sd *) gspca_dev;
255 unsigned int fine, coarse;
257 val = (val * val >> 14) + val / 4;
259 fine = val % VV6410_CIF_LINELENGTH;
260 coarse = min(512, val / VV6410_CIF_LINELENGTH);
262 PDEBUG(D_CONF, "Set coarse exposure to %d, fine exposure to %d",
265 err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
269 err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
273 err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
277 err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);