tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Quickcam cameras initialization data
3 *
4 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 */
17#define MODULE_NAME "tv8532"
18
19#include "gspca.h"
20
21MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
22MODULE_DESCRIPTION("TV8532 USB Camera Driver");
23MODULE_LICENSE("GPL");
24
25/* specific webcam descriptor */
26struct sd {
27 struct gspca_dev gspca_dev; /* !! must be the first item */
28
29 __u8 packet;
30};
31
32static const struct v4l2_pix_format sif_mode[] = {
33 {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
34 .bytesperline = 176,
35 .sizeimage = 176 * 144,
36 .colorspace = V4L2_COLORSPACE_SRGB,
37 .priv = 1},
38 {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
39 .bytesperline = 352,
40 .sizeimage = 352 * 288,
41 .colorspace = V4L2_COLORSPACE_SRGB,
42 .priv = 0},
43};
44
45/* TV-8532A (ICM532A) registers (LE) */
46#define R00_PART_CONTROL 0x00
47#define LATENT_CHANGE 0x80
48#define EXPO_CHANGE 0x04
49#define R01_TIMING_CONTROL_LOW 0x01
50#define CMD_EEprom_Open 0x30
51#define CMD_EEprom_Close 0x29
52#define R03_TABLE_ADDR 0x03
53#define R04_WTRAM_DATA_L 0x04
54#define R05_WTRAM_DATA_M 0x05
55#define R06_WTRAM_DATA_H 0x06
56#define R07_TABLE_LEN 0x07
57#define R08_RAM_WRITE_ACTION 0x08
58#define R0C_AD_WIDTHL 0x0c
59#define R0D_AD_WIDTHH 0x0d
60#define R0E_AD_HEIGHTL 0x0e
61#define R0F_AD_HEIGHTH 0x0f
62#define R10_AD_COL_BEGINL 0x10
63#define R11_AD_COL_BEGINH 0x11
64#define MIRROR 0x04 /* [10] */
65#define R14_AD_ROW_BEGINL 0x14
66#define R15_AD_ROWBEGINH 0x15
67#define R1C_AD_EXPOSE_TIMEL 0x1c
68#define R20_GAIN_G1L 0x20
69#define R21_GAIN_G1H 0x21
70#define R22_GAIN_RL 0x22
71#define R23_GAIN_RH 0x23
72#define R24_GAIN_BL 0x24
73#define R25_GAIN_BH 0x25
74#define R26_GAIN_G2L 0x26
75#define R27_GAIN_G2H 0x27
76#define R28_QUANT 0x28
77#define R29_LINE 0x29
78#define R2C_POLARITY 0x2c
79#define R2D_POINT 0x2d
80#define R2E_POINTH 0x2e
81#define R2F_POINTB 0x2f
82#define R30_POINTBH 0x30
83#define R31_UPD 0x31
84#define R2A_HIGH_BUDGET 0x2a
85#define R2B_LOW_BUDGET 0x2b
86#define R34_VID 0x34
87#define R35_VIDH 0x35
88#define R36_PID 0x36
89#define R37_PIDH 0x37
90#define R39_Test1 0x39 /* GPIO */
91#define R3B_Test3 0x3b /* GPIO */
92#define R83_AD_IDH 0x83
93#define R91_AD_SLOPEREG 0x91
94#define R94_AD_BITCONTROL 0x94
95
96static const u8 eeprom_data[][3] = {
97/* dataH dataM dataL */
98 {0x01, 0x00, 0x01},
99 {0x01, 0x80, 0x11},
100 {0x05, 0x00, 0x14},
101 {0x05, 0x00, 0x1c},
102 {0x0d, 0x00, 0x1e},
103 {0x05, 0x00, 0x1f},
104 {0x05, 0x05, 0x19},
105 {0x05, 0x01, 0x1b},
106 {0x05, 0x09, 0x1e},
107 {0x0d, 0x89, 0x2e},
108 {0x05, 0x89, 0x2f},
109 {0x05, 0x0d, 0xd9},
110 {0x05, 0x09, 0xf1},
111};
112
113
114/* write 1 byte */
115static void reg_w1(struct gspca_dev *gspca_dev,
116 __u16 index, __u8 value)
117{
118 gspca_dev->usb_buf[0] = value;
119 usb_control_msg(gspca_dev->dev,
120 usb_sndctrlpipe(gspca_dev->dev, 0),
121 0x02,
122 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
123 0, /* value */
124 index, gspca_dev->usb_buf, 1, 500);
125}
126
127/* write 2 bytes */
128static void reg_w2(struct gspca_dev *gspca_dev,
129 u16 index, u16 value)
130{
131 gspca_dev->usb_buf[0] = value;
132 gspca_dev->usb_buf[1] = value >> 8;
133 usb_control_msg(gspca_dev->dev,
134 usb_sndctrlpipe(gspca_dev->dev, 0),
135 0x02,
136 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
137 0, /* value */
138 index, gspca_dev->usb_buf, 2, 500);
139}
140
141static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
142{
143 int i;
144
145 reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open);
146 for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) {
147 reg_w1(gspca_dev, R03_TABLE_ADDR, i);
148 reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]);
149 reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]);
150 reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]);
151 reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0);
152 }
153 reg_w1(gspca_dev, R07_TABLE_LEN, i);
154 reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
155}
156
157/* this function is called at probe time */
158static int sd_config(struct gspca_dev *gspca_dev,
159 const struct usb_device_id *id)
160{
161 struct cam *cam;
162
163 cam = &gspca_dev->cam;
164 cam->cam_mode = sif_mode;
165 cam->nmodes = ARRAY_SIZE(sif_mode);
166
167 return 0;
168}
169
170static void tv_8532_setReg(struct gspca_dev *gspca_dev)
171{
172 reg_w1(gspca_dev, R3B_Test3, 0x0a); /* Test0Sel = 10 */
173 /******************************************************/
174 reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
175 reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01);
176 reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
177 reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
178 /* begin active line */
179 reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
180 /* mirror and digital gain */
181 reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
182
183 reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
184 reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
185 reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
186 /* = 0x84 */
187}
188
189/* this function is called at probe and resume time */
190static int sd_init(struct gspca_dev *gspca_dev)
191{
192 tv_8532WriteEEprom(gspca_dev);
193
194 return 0;
195}
196
197static void setexposure(struct gspca_dev *gspca_dev, s32 val)
198{
199 reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, val);
200 reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
201 /* 0x84 */
202}
203
204static void setgain(struct gspca_dev *gspca_dev, s32 val)
205{
206 reg_w2(gspca_dev, R20_GAIN_G1L, val);
207 reg_w2(gspca_dev, R22_GAIN_RL, val);
208 reg_w2(gspca_dev, R24_GAIN_BL, val);
209 reg_w2(gspca_dev, R26_GAIN_G2L, val);
210}
211
212/* -- start the camera -- */
213static int sd_start(struct gspca_dev *gspca_dev)
214{
215 struct sd *sd = (struct sd *) gspca_dev;
216
217 reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8); /* 0x20; 0x0c */
218 reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
219
220 /************************************************/
221 reg_w1(gspca_dev, R28_QUANT, 0x90);
222 /* 0x72 compressed mode 0x28 */
223 if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
224 /* 176x144 */
225 reg_w1(gspca_dev, R29_LINE, 0x41);
226 /* CIF - 2 lines/packet */
227 } else {
228 /* 352x288 */
229 reg_w1(gspca_dev, R29_LINE, 0x81);
230 /* CIF - 2 lines/packet */
231 }
232 /************************************************/
233 reg_w1(gspca_dev, R2C_POLARITY, 0x10); /* slow clock */
234 reg_w1(gspca_dev, R2D_POINT, 0x14);
235 reg_w1(gspca_dev, R2E_POINTH, 0x01);
236 reg_w1(gspca_dev, R2F_POINTB, 0x12);
237 reg_w1(gspca_dev, R30_POINTBH, 0x01);
238
239 tv_8532_setReg(gspca_dev);
240
241 /************************************************/
242 reg_w1(gspca_dev, R31_UPD, 0x01); /* update registers */
243 msleep(200);
244 reg_w1(gspca_dev, R31_UPD, 0x00); /* end update */
245
246 gspca_dev->empty_packet = 0; /* check the empty packets */
247 sd->packet = 0; /* ignore the first packets */
248
249 return 0;
250}
251
252static void sd_stopN(struct gspca_dev *gspca_dev)
253{
254 reg_w1(gspca_dev, R3B_Test3, 0x0b); /* Test0Sel = 11 = GPIO */
255}
256
257static void sd_pkt_scan(struct gspca_dev *gspca_dev,
258 u8 *data, /* isoc packet */
259 int len) /* iso packet length */
260{
261 struct sd *sd = (struct sd *) gspca_dev;
262 int packet_type0, packet_type1;
263
264 packet_type0 = packet_type1 = INTER_PACKET;
265 if (gspca_dev->empty_packet) {
266 gspca_dev->empty_packet = 0;
267 sd->packet = gspca_dev->pixfmt.height / 2;
268 packet_type0 = FIRST_PACKET;
269 } else if (sd->packet == 0)
270 return; /* 2 more lines in 352x288 ! */
271 sd->packet--;
272 if (sd->packet == 0)
273 packet_type1 = LAST_PACKET;
274
275 /* each packet contains:
276 * - header 2 bytes
277 * - RGRG line
278 * - 4 bytes
279 * - GBGB line
280 * - 4 bytes
281 */
282 gspca_frame_add(gspca_dev, packet_type0,
283 data + 2, gspca_dev->pixfmt.width);
284 gspca_frame_add(gspca_dev, packet_type1,
285 data + gspca_dev->pixfmt.width + 5,
286 gspca_dev->pixfmt.width);
287}
288
289static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
290{
291 struct gspca_dev *gspca_dev =
292 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
293
294 gspca_dev->usb_err = 0;
295
296 if (!gspca_dev->streaming)
297 return 0;
298
299 switch (ctrl->id) {
300 case V4L2_CID_EXPOSURE:
301 setexposure(gspca_dev, ctrl->val);
302 break;
303 case V4L2_CID_GAIN:
304 setgain(gspca_dev, ctrl->val);
305 break;
306 }
307 return gspca_dev->usb_err;
308}
309
310static const struct v4l2_ctrl_ops sd_ctrl_ops = {
311 .s_ctrl = sd_s_ctrl,
312};
313
314static int sd_init_controls(struct gspca_dev *gspca_dev)
315{
316 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
317
318 gspca_dev->vdev.ctrl_handler = hdl;
319 v4l2_ctrl_handler_init(hdl, 2);
320 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
321 V4L2_CID_EXPOSURE, 0, 0x18f, 1, 0x18f);
322 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
323 V4L2_CID_GAIN, 0, 0x7ff, 1, 0x100);
324
325 if (hdl->error) {
326 pr_err("Could not initialize controls\n");
327 return hdl->error;
328 }
329 return 0;
330}
331
332/* sub-driver description */
333static const struct sd_desc sd_desc = {
334 .name = MODULE_NAME,
335 .config = sd_config,
336 .init = sd_init,
337 .init_controls = sd_init_controls,
338 .start = sd_start,
339 .stopN = sd_stopN,
340 .pkt_scan = sd_pkt_scan,
341};
342
343/* -- module initialisation -- */
344static const struct usb_device_id device_table[] = {
345 {USB_DEVICE(0x046d, 0x0920)},
346 {USB_DEVICE(0x046d, 0x0921)},
347 {USB_DEVICE(0x0545, 0x808b)},
348 {USB_DEVICE(0x0545, 0x8333)},
349 {USB_DEVICE(0x0923, 0x010f)},
350 {}
351};
352
353MODULE_DEVICE_TABLE(usb, device_table);
354
355/* -- device connect -- */
356static int sd_probe(struct usb_interface *intf,
357 const struct usb_device_id *id)
358{
359 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
360 THIS_MODULE);
361}
362
363static struct usb_driver sd_driver = {
364 .name = MODULE_NAME,
365 .id_table = device_table,
366 .probe = sd_probe,
367 .disconnect = gspca_disconnect,
368#ifdef CONFIG_PM
369 .suspend = gspca_suspend,
370 .resume = gspca_resume,
371 .reset_resume = gspca_resume,
372#endif
373};
374
375module_usb_driver(sd_driver);