1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
4 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
5 * Copyright (c) 2002, 2003 Tuukka Toivonen
6 * Copyright (c) 2008 Erik Andrén
7 *
8 * P/N 861037: Sensor HDCS1000 ASIC STV0600
9 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
10 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
11 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
12 * P/N 861075-0040: Sensor HDCS1000 ASIC
13 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
14 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
15 */
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include "stv06xx_vv6410.h"
20
21 static struct v4l2_pix_format vv6410_mode[] = {
22 {
23 356,
24 292,
25 V4L2_PIX_FMT_SGRBG8,
26 V4L2_FIELD_NONE,
27 .sizeimage = 356 * 292,
28 .bytesperline = 356,
29 .colorspace = V4L2_COLORSPACE_SRGB,
30 .priv = 0
31 }
32 };
33
vv6410_s_ctrl(struct v4l2_ctrl * ctrl)34 static int vv6410_s_ctrl(struct v4l2_ctrl *ctrl)
35 {
36 struct gspca_dev *gspca_dev =
37 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
38 int err = -EINVAL;
39
40 switch (ctrl->id) {
41 case V4L2_CID_HFLIP:
42 if (!gspca_dev->streaming)
43 return 0;
44 err = vv6410_set_hflip(gspca_dev, ctrl->val);
45 break;
46 case V4L2_CID_VFLIP:
47 if (!gspca_dev->streaming)
48 return 0;
49 err = vv6410_set_vflip(gspca_dev, ctrl->val);
50 break;
51 case V4L2_CID_GAIN:
52 err = vv6410_set_analog_gain(gspca_dev, ctrl->val);
53 break;
54 case V4L2_CID_EXPOSURE:
55 err = vv6410_set_exposure(gspca_dev, ctrl->val);
56 break;
57 }
58 return err;
59 }
60
61 static const struct v4l2_ctrl_ops vv6410_ctrl_ops = {
62 .s_ctrl = vv6410_s_ctrl,
63 };
64
vv6410_probe(struct sd * sd)65 static int vv6410_probe(struct sd *sd)
66 {
67 u16 data;
68 int err;
69
70 err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
71 if (err < 0)
72 return -ENODEV;
73
74 if (data != 0x19)
75 return -ENODEV;
76
77 pr_info("vv6410 sensor detected\n");
78
79 sd->gspca_dev.cam.cam_mode = vv6410_mode;
80 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
81 return 0;
82 }
83
vv6410_init_controls(struct sd * sd)84 static int vv6410_init_controls(struct sd *sd)
85 {
86 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
87
88 v4l2_ctrl_handler_init(hdl, 2);
89 /* Disable the hardware VFLIP and HFLIP as we currently lack a
90 mechanism to adjust the image offset in such a way that
91 we don't need to renegotiate the announced format */
92 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
93 /* V4L2_CID_HFLIP, 0, 1, 1, 0); */
94 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
95 /* V4L2_CID_VFLIP, 0, 1, 1, 0); */
96 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
97 V4L2_CID_EXPOSURE, 0, 32768, 1, 20000);
98 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
99 V4L2_CID_GAIN, 0, 15, 1, 10);
100 return hdl->error;
101 }
102
vv6410_init(struct sd * sd)103 static int vv6410_init(struct sd *sd)
104 {
105 int err = 0, i;
106
107 for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++)
108 stv06xx_write_bridge(sd, stv_bridge_init[i].addr, stv_bridge_init[i].data);
109
110 err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
111 ARRAY_SIZE(vv6410_sensor_init));
112 return (err < 0) ? err : 0;
113 }
114
vv6410_start(struct sd * sd)115 static int vv6410_start(struct sd *sd)
116 {
117 int err;
118 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
119 struct cam *cam = &sd->gspca_dev.cam;
120 u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
121
122 if (priv & VV6410_SUBSAMPLE) {
123 gspca_dbg(gspca_dev, D_CONF, "Enabling subsampling\n");
124 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);
125 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
126
127 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
128 } else {
129 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
130 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
131 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x00);
132
133 }
134
135 /* Turn on LED */
136 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
137 if (err < 0)
138 return err;
139
140 err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
141 if (err < 0)
142 return err;
143
144 gspca_dbg(gspca_dev, D_STREAM, "Starting stream\n");
145
146 return 0;
147 }
148
vv6410_stop(struct sd * sd)149 static int vv6410_stop(struct sd *sd)
150 {
151 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
152 int err;
153
154 /* Turn off LED */
155 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
156 if (err < 0)
157 return err;
158
159 err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
160 if (err < 0)
161 return err;
162
163 gspca_dbg(gspca_dev, D_STREAM, "Halting stream\n");
164
165 return 0;
166 }
167
vv6410_dump(struct sd * sd)168 static int vv6410_dump(struct sd *sd)
169 {
170 u8 i;
171 int err = 0;
172
173 pr_info("Dumping all vv6410 sensor registers\n");
174 for (i = 0; i < 0xff && !err; i++) {
175 u16 data;
176 err = stv06xx_read_sensor(sd, i, &data);
177 pr_info("Register 0x%x contained 0x%x\n", i, data);
178 }
179 return (err < 0) ? err : 0;
180 }
181
vv6410_set_hflip(struct gspca_dev * gspca_dev,__s32 val)182 static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
183 {
184 int err;
185 u16 i2c_data;
186 struct sd *sd = (struct sd *) gspca_dev;
187
188 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
189 if (err < 0)
190 return err;
191
192 if (val)
193 i2c_data |= VV6410_HFLIP;
194 else
195 i2c_data &= ~VV6410_HFLIP;
196
197 gspca_dbg(gspca_dev, D_CONF, "Set horizontal flip to %d\n", val);
198 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
199
200 return (err < 0) ? err : 0;
201 }
202
vv6410_set_vflip(struct gspca_dev * gspca_dev,__s32 val)203 static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
204 {
205 int err;
206 u16 i2c_data;
207 struct sd *sd = (struct sd *) gspca_dev;
208
209 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
210 if (err < 0)
211 return err;
212
213 if (val)
214 i2c_data |= VV6410_VFLIP;
215 else
216 i2c_data &= ~VV6410_VFLIP;
217
218 gspca_dbg(gspca_dev, D_CONF, "Set vertical flip to %d\n", val);
219 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
220
221 return (err < 0) ? err : 0;
222 }
223
vv6410_set_analog_gain(struct gspca_dev * gspca_dev,__s32 val)224 static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
225 {
226 int err;
227 struct sd *sd = (struct sd *) gspca_dev;
228
229 gspca_dbg(gspca_dev, D_CONF, "Set analog gain to %d\n", val);
230 err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));
231
232 return (err < 0) ? err : 0;
233 }
234
vv6410_set_exposure(struct gspca_dev * gspca_dev,__s32 val)235 static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
236 {
237 int err;
238 struct sd *sd = (struct sd *) gspca_dev;
239 unsigned int fine, coarse;
240
241 val = (val * val >> 14) + val / 4;
242
243 fine = val % VV6410_CIF_LINELENGTH;
244 coarse = min(512, val / VV6410_CIF_LINELENGTH);
245
246 gspca_dbg(gspca_dev, D_CONF, "Set coarse exposure to %d, fine exposure to %d\n",
247 coarse, fine);
248
249 err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
250 if (err < 0)
251 goto out;
252
253 err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
254 if (err < 0)
255 goto out;
256
257 err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
258 if (err < 0)
259 goto out;
260
261 err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);
262
263 out:
264 return err;
265 }
266