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 * P/N 861037: Sensor HDCS1000 ASIC STV0600
18 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
19 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
20 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
21 * P/N 861075-0040: Sensor HDCS1000 ASIC
22 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
23 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
26 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28 #include "stv06xx_vv6410.h"
30 static struct v4l2_pix_format vv6410_mode[] = {
36 .sizeimage = 356 * 292,
38 .colorspace = V4L2_COLORSPACE_SRGB,
43 static int vv6410_s_ctrl(struct v4l2_ctrl *ctrl)
45 struct gspca_dev *gspca_dev =
46 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
51 if (!gspca_dev->streaming)
53 err = vv6410_set_hflip(gspca_dev, ctrl->val);
56 if (!gspca_dev->streaming)
58 err = vv6410_set_vflip(gspca_dev, ctrl->val);
61 err = vv6410_set_analog_gain(gspca_dev, ctrl->val);
63 case V4L2_CID_EXPOSURE:
64 err = vv6410_set_exposure(gspca_dev, ctrl->val);
70 static const struct v4l2_ctrl_ops vv6410_ctrl_ops = {
71 .s_ctrl = vv6410_s_ctrl,
74 static int vv6410_probe(struct sd *sd)
79 err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
86 pr_info("vv6410 sensor detected\n");
88 sd->gspca_dev.cam.cam_mode = vv6410_mode;
89 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
93 static int vv6410_init_controls(struct sd *sd)
95 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
97 v4l2_ctrl_handler_init(hdl, 2);
98 /* Disable the hardware VFLIP and HFLIP as we currently lack a
99 mechanism to adjust the image offset in such a way that
100 we don't need to renegotiate the announced format */
101 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
102 /* V4L2_CID_HFLIP, 0, 1, 1, 0); */
103 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
104 /* V4L2_CID_VFLIP, 0, 1, 1, 0); */
105 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
106 V4L2_CID_EXPOSURE, 0, 32768, 1, 20000);
107 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
108 V4L2_CID_GAIN, 0, 15, 1, 10);
112 static int vv6410_init(struct sd *sd)
116 for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++)
117 stv06xx_write_bridge(sd, stv_bridge_init[i].addr, stv_bridge_init[i].data);
119 err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
120 ARRAY_SIZE(vv6410_sensor_init));
121 return (err < 0) ? err : 0;
124 static int vv6410_start(struct sd *sd)
127 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
128 struct cam *cam = &sd->gspca_dev.cam;
129 u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
131 if (priv & VV6410_SUBSAMPLE) {
132 PDEBUG(D_CONF, "Enabling subsampling");
133 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);
134 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
136 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
138 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
139 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
140 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x00);
145 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
149 err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
153 PDEBUG(D_STREAM, "Starting stream");
158 static int vv6410_stop(struct sd *sd)
160 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
164 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
168 err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
172 PDEBUG(D_STREAM, "Halting stream");
177 static int vv6410_dump(struct sd *sd)
182 pr_info("Dumping all vv6410 sensor registers\n");
183 for (i = 0; i < 0xff && !err; i++) {
185 err = stv06xx_read_sensor(sd, i, &data);
186 pr_info("Register 0x%x contained 0x%x\n", i, data);
188 return (err < 0) ? err : 0;
191 static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
195 struct sd *sd = (struct sd *) gspca_dev;
197 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
202 i2c_data |= VV6410_HFLIP;
204 i2c_data &= ~VV6410_HFLIP;
206 PDEBUG(D_CONF, "Set horizontal flip to %d", val);
207 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
209 return (err < 0) ? err : 0;
212 static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
216 struct sd *sd = (struct sd *) gspca_dev;
218 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
223 i2c_data |= VV6410_VFLIP;
225 i2c_data &= ~VV6410_VFLIP;
227 PDEBUG(D_CONF, "Set vertical flip to %d", val);
228 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
230 return (err < 0) ? err : 0;
233 static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
236 struct sd *sd = (struct sd *) gspca_dev;
238 PDEBUG(D_CONF, "Set analog gain to %d", val);
239 err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));
241 return (err < 0) ? err : 0;
244 static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
247 struct sd *sd = (struct sd *) gspca_dev;
248 unsigned int fine, coarse;
250 val = (val * val >> 14) + val / 4;
252 fine = val % VV6410_CIF_LINELENGTH;
253 coarse = min(512, val / VV6410_CIF_LINELENGTH);
255 PDEBUG(D_CONF, "Set coarse exposure to %d, fine exposure to %d",
258 err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
262 err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
266 err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
270 err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);