Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/media/usb/gspca/etoms.c

  1 /*
  2  * Etoms Et61x151 GPL Linux driver by Michel Xhaard (09/09/2004)
  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  * You should have received a copy of the GNU General Public License
 17  * along with this program; if not, write to the Free Software
 18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 19  */
 20 
 21 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 22 
 23 #define MODULE_NAME "etoms"
 24 
 25 #include "gspca.h"
 26 
 27 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
 28 MODULE_DESCRIPTION("Etoms USB Camera Driver");
 29 MODULE_LICENSE("GPL");
 30 
 31 /* specific webcam descriptor */
 32 struct sd {
 33         struct gspca_dev gspca_dev;     /* !! must be the first item */
 34 
 35         unsigned char autogain;
 36 
 37         char sensor;
 38 #define SENSOR_PAS106 0
 39 #define SENSOR_TAS5130CXX 1
 40         signed char ag_cnt;
 41 #define AG_CNT_START 13
 42 };
 43 
 44 static const struct v4l2_pix_format vga_mode[] = {
 45         {320, 240, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
 46                 .bytesperline = 320,
 47                 .sizeimage = 320 * 240,
 48                 .colorspace = V4L2_COLORSPACE_SRGB,
 49                 .priv = 1},
 50 /*      {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
 51                 .bytesperline = 640,
 52                 .sizeimage = 640 * 480,
 53                 .colorspace = V4L2_COLORSPACE_SRGB,
 54                 .priv = 0}, */
 55 };
 56 
 57 static const struct v4l2_pix_format sif_mode[] = {
 58         {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
 59                 .bytesperline = 176,
 60                 .sizeimage = 176 * 144,
 61                 .colorspace = V4L2_COLORSPACE_SRGB,
 62                 .priv = 1},
 63         {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
 64                 .bytesperline = 352,
 65                 .sizeimage = 352 * 288,
 66                 .colorspace = V4L2_COLORSPACE_SRGB,
 67                 .priv = 0},
 68 };
 69 
 70 #define ETOMS_ALT_SIZE_1000   12
 71 
 72 #define ET_GPIO_DIR_CTRL 0x04   /* Control IO bit[0..5] (0 in  1 out) */
 73 #define ET_GPIO_OUT 0x05        /* Only IO data */
 74 #define ET_GPIO_IN 0x06         /* Read Only IO data */
 75 #define ET_RESET_ALL 0x03
 76 #define ET_ClCK 0x01
 77 #define ET_CTRL 0x02            /* enable i2c OutClck Powerdown mode */
 78 
 79 #define ET_COMP 0x12            /* Compression register */
 80 #define ET_MAXQt 0x13
 81 #define ET_MINQt 0x14
 82 #define ET_COMP_VAL0 0x02
 83 #define ET_COMP_VAL1 0x03
 84 
 85 #define ET_REG1d 0x1d
 86 #define ET_REG1e 0x1e
 87 #define ET_REG1f 0x1f
 88 #define ET_REG20 0x20
 89 #define ET_REG21 0x21
 90 #define ET_REG22 0x22
 91 #define ET_REG23 0x23
 92 #define ET_REG24 0x24
 93 #define ET_REG25 0x25
 94 /* base registers for luma calculation */
 95 #define ET_LUMA_CENTER 0x39
 96 
 97 #define ET_G_RED 0x4d
 98 #define ET_G_GREEN1 0x4e
 99 #define ET_G_BLUE 0x4f
100 #define ET_G_GREEN2 0x50
101 #define ET_G_GR_H 0x51
102 #define ET_G_GB_H 0x52
103 
104 #define ET_O_RED 0x34
105 #define ET_O_GREEN1 0x35
106 #define ET_O_BLUE 0x36
107 #define ET_O_GREEN2 0x37
108 
109 #define ET_SYNCHRO 0x68
110 #define ET_STARTX 0x69
111 #define ET_STARTY 0x6a
112 #define ET_WIDTH_LOW 0x6b
113 #define ET_HEIGTH_LOW 0x6c
114 #define ET_W_H_HEIGTH 0x6d
115 
116 #define ET_REG6e 0x6e           /* OBW */
117 #define ET_REG6f 0x6f           /* OBW */
118 #define ET_REG70 0x70           /* OBW_AWB */
119 #define ET_REG71 0x71           /* OBW_AWB */
120 #define ET_REG72 0x72           /* OBW_AWB */
121 #define ET_REG73 0x73           /* Clkdelay ns */
122 #define ET_REG74 0x74           /* test pattern */
123 #define ET_REG75 0x75           /* test pattern */
124 
125 #define ET_I2C_CLK 0x8c
126 #define ET_PXL_CLK 0x60
127 
128 #define ET_I2C_BASE 0x89
129 #define ET_I2C_COUNT 0x8a
130 #define ET_I2C_PREFETCH 0x8b
131 #define ET_I2C_REG 0x88
132 #define ET_I2C_DATA7 0x87
133 #define ET_I2C_DATA6 0x86
134 #define ET_I2C_DATA5 0x85
135 #define ET_I2C_DATA4 0x84
136 #define ET_I2C_DATA3 0x83
137 #define ET_I2C_DATA2 0x82
138 #define ET_I2C_DATA1 0x81
139 #define ET_I2C_DATA0 0x80
140 
141 #define PAS106_REG2 0x02        /* pxlClk = systemClk/(reg2) */
142 #define PAS106_REG3 0x03        /* line/frame H [11..4] */
143 #define PAS106_REG4 0x04        /* line/frame L [3..0] */
144 #define PAS106_REG5 0x05        /* exposure time line offset(default 5) */
145 #define PAS106_REG6 0x06        /* exposure time pixel offset(default 6) */
146 #define PAS106_REG7 0x07        /* signbit Dac (default 0) */
147 #define PAS106_REG9 0x09
148 #define PAS106_REG0e 0x0e       /* global gain [4..0](default 0x0e) */
149 #define PAS106_REG13 0x13       /* end i2c write */
150 
151 static const __u8 GainRGBG[] = { 0x80, 0x80, 0x80, 0x80, 0x00, 0x00 };
152 
153 static const __u8 I2c2[] = { 0x08, 0x08, 0x08, 0x08, 0x0d };
154 
155 static const __u8 I2c3[] = { 0x12, 0x05 };
156 
157 static const __u8 I2c4[] = { 0x41, 0x08 };
158 
159 /* read 'len' bytes to gspca_dev->usb_buf */
160 static void reg_r(struct gspca_dev *gspca_dev,
161                   __u16 index,
162                   __u16 len)
163 {
164         struct usb_device *dev = gspca_dev->dev;
165 
166         if (len > USB_BUF_SZ) {
167                 PERR("reg_r: buffer overflow\n");
168                 return;
169         }
170 
171         usb_control_msg(dev,
172                         usb_rcvctrlpipe(dev, 0),
173                         0,
174                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
175                         0,
176                         index, gspca_dev->usb_buf, len, 500);
177         PDEBUG(D_USBI, "reg read [%02x] -> %02x ..",
178                         index, gspca_dev->usb_buf[0]);
179 }
180 
181 static void reg_w_val(struct gspca_dev *gspca_dev,
182                         __u16 index,
183                         __u8 val)
184 {
185         struct usb_device *dev = gspca_dev->dev;
186 
187         gspca_dev->usb_buf[0] = val;
188         usb_control_msg(dev,
189                         usb_sndctrlpipe(dev, 0),
190                         0,
191                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
192                         0,
193                         index, gspca_dev->usb_buf, 1, 500);
194 }
195 
196 static void reg_w(struct gspca_dev *gspca_dev,
197                   __u16 index,
198                   const __u8 *buffer,
199                   __u16 len)
200 {
201         struct usb_device *dev = gspca_dev->dev;
202 
203         if (len > USB_BUF_SZ) {
204                 pr_err("reg_w: buffer overflow\n");
205                 return;
206         }
207         PDEBUG(D_USBO, "reg write [%02x] = %02x..", index, *buffer);
208 
209         memcpy(gspca_dev->usb_buf, buffer, len);
210         usb_control_msg(dev,
211                         usb_sndctrlpipe(dev, 0),
212                         0,
213                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
214                         0, index, gspca_dev->usb_buf, len, 500);
215 }
216 
217 static int i2c_w(struct gspca_dev *gspca_dev,
218                  __u8 reg,
219                  const __u8 *buffer,
220                  int len, __u8 mode)
221 {
222         /* buffer should be [D0..D7] */
223         __u8 ptchcount;
224 
225         /* set the base address */
226         reg_w_val(gspca_dev, ET_I2C_BASE, 0x40);
227                                          /* sensor base for the pas106 */
228         /* set count and prefetch */
229         ptchcount = ((len & 0x07) << 4) | (mode & 0x03);
230         reg_w_val(gspca_dev, ET_I2C_COUNT, ptchcount);
231         /* set the register base */
232         reg_w_val(gspca_dev, ET_I2C_REG, reg);
233         while (--len >= 0)
234                 reg_w_val(gspca_dev, ET_I2C_DATA0 + len, buffer[len]);
235         return 0;
236 }
237 
238 static int i2c_r(struct gspca_dev *gspca_dev,
239                         __u8 reg)
240 {
241         /* set the base address */
242         reg_w_val(gspca_dev, ET_I2C_BASE, 0x40);
243                                         /* sensor base for the pas106 */
244         /* set count and prefetch (cnd: 4 bits - mode: 4 bits) */
245         reg_w_val(gspca_dev, ET_I2C_COUNT, 0x11);
246         reg_w_val(gspca_dev, ET_I2C_REG, reg);  /* set the register base */
247         reg_w_val(gspca_dev, ET_I2C_PREFETCH, 0x02);    /* prefetch */
248         reg_w_val(gspca_dev, ET_I2C_PREFETCH, 0x00);
249         reg_r(gspca_dev, ET_I2C_DATA0, 1);      /* read one byte */
250         return 0;
251 }
252 
253 static int Et_WaitStatus(struct gspca_dev *gspca_dev)
254 {
255         int retry = 10;
256 
257         while (retry--) {
258                 reg_r(gspca_dev, ET_ClCK, 1);
259                 if (gspca_dev->usb_buf[0] != 0)
260                         return 1;
261         }
262         return 0;
263 }
264 
265 static int et_video(struct gspca_dev *gspca_dev,
266                     int on)
267 {
268         int ret;
269 
270         reg_w_val(gspca_dev, ET_GPIO_OUT,
271                   on ? 0x10             /* startvideo - set Bit5 */
272                      : 0);              /* stopvideo */
273         ret = Et_WaitStatus(gspca_dev);
274         if (ret != 0)
275                 PERR("timeout video on/off");
276         return ret;
277 }
278 
279 static void Et_init2(struct gspca_dev *gspca_dev)
280 {
281         __u8 value;
282         static const __u8 FormLine[] = { 0x84, 0x03, 0x14, 0xf4, 0x01, 0x05 };
283 
284         PDEBUG(D_STREAM, "Open Init2 ET");
285         reg_w_val(gspca_dev, ET_GPIO_DIR_CTRL, 0x2f);
286         reg_w_val(gspca_dev, ET_GPIO_OUT, 0x10);
287         reg_r(gspca_dev, ET_GPIO_IN, 1);
288         reg_w_val(gspca_dev, ET_ClCK, 0x14); /* 0x14 // 0x16 enabled pattern */
289         reg_w_val(gspca_dev, ET_CTRL, 0x1b);
290 
291         /*  compression et subsampling */
292         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv)
293                 value = ET_COMP_VAL1;   /* 320 */
294         else
295                 value = ET_COMP_VAL0;   /* 640 */
296         reg_w_val(gspca_dev, ET_COMP, value);
297         reg_w_val(gspca_dev, ET_MAXQt, 0x1f);
298         reg_w_val(gspca_dev, ET_MINQt, 0x04);
299         /* undocumented registers */
300         reg_w_val(gspca_dev, ET_REG1d, 0xff);
301         reg_w_val(gspca_dev, ET_REG1e, 0xff);
302         reg_w_val(gspca_dev, ET_REG1f, 0xff);
303         reg_w_val(gspca_dev, ET_REG20, 0x35);
304         reg_w_val(gspca_dev, ET_REG21, 0x01);
305         reg_w_val(gspca_dev, ET_REG22, 0x00);
306         reg_w_val(gspca_dev, ET_REG23, 0xff);
307         reg_w_val(gspca_dev, ET_REG24, 0xff);
308         reg_w_val(gspca_dev, ET_REG25, 0x0f);
309         /* colors setting */
310         reg_w_val(gspca_dev, 0x30, 0x11);               /* 0x30 */
311         reg_w_val(gspca_dev, 0x31, 0x40);
312         reg_w_val(gspca_dev, 0x32, 0x00);
313         reg_w_val(gspca_dev, ET_O_RED, 0x00);           /* 0x34 */
314         reg_w_val(gspca_dev, ET_O_GREEN1, 0x00);
315         reg_w_val(gspca_dev, ET_O_BLUE, 0x00);
316         reg_w_val(gspca_dev, ET_O_GREEN2, 0x00);
317         /*************/
318         reg_w_val(gspca_dev, ET_G_RED, 0x80);           /* 0x4d */
319         reg_w_val(gspca_dev, ET_G_GREEN1, 0x80);
320         reg_w_val(gspca_dev, ET_G_BLUE, 0x80);
321         reg_w_val(gspca_dev, ET_G_GREEN2, 0x80);
322         reg_w_val(gspca_dev, ET_G_GR_H, 0x00);
323         reg_w_val(gspca_dev, ET_G_GB_H, 0x00);          /* 0x52 */
324         /* Window control registers */
325         reg_w_val(gspca_dev, 0x61, 0x80);               /* use cmc_out */
326         reg_w_val(gspca_dev, 0x62, 0x02);
327         reg_w_val(gspca_dev, 0x63, 0x03);
328         reg_w_val(gspca_dev, 0x64, 0x14);
329         reg_w_val(gspca_dev, 0x65, 0x0e);
330         reg_w_val(gspca_dev, 0x66, 0x02);
331         reg_w_val(gspca_dev, 0x67, 0x02);
332 
333         /**************************************/
334         reg_w_val(gspca_dev, ET_SYNCHRO, 0x8f);         /* 0x68 */
335         reg_w_val(gspca_dev, ET_STARTX, 0x69);          /* 0x6a //0x69 */
336         reg_w_val(gspca_dev, ET_STARTY, 0x0d);          /* 0x0d //0x0c */
337         reg_w_val(gspca_dev, ET_WIDTH_LOW, 0x80);
338         reg_w_val(gspca_dev, ET_HEIGTH_LOW, 0xe0);
339         reg_w_val(gspca_dev, ET_W_H_HEIGTH, 0x60);      /* 6d */
340         reg_w_val(gspca_dev, ET_REG6e, 0x86);
341         reg_w_val(gspca_dev, ET_REG6f, 0x01);
342         reg_w_val(gspca_dev, ET_REG70, 0x26);
343         reg_w_val(gspca_dev, ET_REG71, 0x7a);
344         reg_w_val(gspca_dev, ET_REG72, 0x01);
345         /* Clock Pattern registers ***************** */
346         reg_w_val(gspca_dev, ET_REG73, 0x00);
347         reg_w_val(gspca_dev, ET_REG74, 0x18);           /* 0x28 */
348         reg_w_val(gspca_dev, ET_REG75, 0x0f);           /* 0x01 */
349         /**********************************************/
350         reg_w_val(gspca_dev, 0x8a, 0x20);
351         reg_w_val(gspca_dev, 0x8d, 0x0f);
352         reg_w_val(gspca_dev, 0x8e, 0x08);
353         /**************************************/
354         reg_w_val(gspca_dev, 0x03, 0x08);
355         reg_w_val(gspca_dev, ET_PXL_CLK, 0x03);
356         reg_w_val(gspca_dev, 0x81, 0xff);
357         reg_w_val(gspca_dev, 0x80, 0x00);
358         reg_w_val(gspca_dev, 0x81, 0xff);
359         reg_w_val(gspca_dev, 0x80, 0x20);
360         reg_w_val(gspca_dev, 0x03, 0x01);
361         reg_w_val(gspca_dev, 0x03, 0x00);
362         reg_w_val(gspca_dev, 0x03, 0x08);
363         /********************************************/
364 
365 /*      reg_r(gspca_dev, ET_I2C_BASE, 1);
366                                          always 0x40 as the pas106 ??? */
367         /* set the sensor */
368         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv)
369                 value = 0x04;           /* 320 */
370         else                            /* 640 */
371                 value = 0x1e;   /* 0x17  * setting PixelClock
372                                          * 0x03 mean 24/(3+1) = 6 Mhz
373                                          * 0x05 -> 24/(5+1) = 4 Mhz
374                                          * 0x0b -> 24/(11+1) = 2 Mhz
375                                          * 0x17 -> 24/(23+1) = 1 Mhz
376                                          */
377         reg_w_val(gspca_dev, ET_PXL_CLK, value);
378         /* now set by fifo the FormatLine setting */
379         reg_w(gspca_dev, 0x62, FormLine, 6);
380 
381         /* set exposure times [ 0..0x78] 0->longvalue 0x78->shortvalue */
382         reg_w_val(gspca_dev, 0x81, 0x47);       /* 0x47; */
383         reg_w_val(gspca_dev, 0x80, 0x40);       /* 0x40; */
384         /* Pedro change */
385         /* Brightness change Brith+ decrease value */
386         /* Brigth- increase value */
387         /* original value = 0x70; */
388         reg_w_val(gspca_dev, 0x81, 0x30);       /* 0x20; - set brightness */
389         reg_w_val(gspca_dev, 0x80, 0x20);       /* 0x20; */
390 }
391 
392 static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
393 {
394         int i;
395 
396         for (i = 0; i < 4; i++)
397                 reg_w_val(gspca_dev, ET_O_RED + i, val);
398 }
399 
400 static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
401 {
402         __u8 RGBG[] = { 0x80, 0x80, 0x80, 0x80, 0x00, 0x00 };
403 
404         memset(RGBG, val, sizeof(RGBG) - 2);
405         reg_w(gspca_dev, ET_G_RED, RGBG, 6);
406 }
407 
408 static void setcolors(struct gspca_dev *gspca_dev, s32 val)
409 {
410         struct sd *sd = (struct sd *) gspca_dev;
411         __u8 I2cc[] = { 0x05, 0x02, 0x02, 0x05, 0x0d };
412         __u8 i2cflags = 0x01;
413         /* __u8 green = 0; */
414 
415         I2cc[3] = val;  /* red */
416         I2cc[0] = 15 - val;     /* blue */
417         /* green = 15 - ((((7*I2cc[0]) >> 2 ) + I2cc[3]) >> 1); */
418         /* I2cc[1] = I2cc[2] = green; */
419         if (sd->sensor == SENSOR_PAS106) {
420                 i2c_w(gspca_dev, PAS106_REG13, &i2cflags, 1, 3);
421                 i2c_w(gspca_dev, PAS106_REG9, I2cc, sizeof I2cc, 1);
422         }
423 /*      PDEBUG(D_CONF , "Etoms red %d blue %d green %d",
424                 I2cc[3], I2cc[0], green); */
425 }
426 
427 static s32 getcolors(struct gspca_dev *gspca_dev)
428 {
429         struct sd *sd = (struct sd *) gspca_dev;
430 
431         if (sd->sensor == SENSOR_PAS106) {
432 /*              i2c_r(gspca_dev, PAS106_REG9);           * blue */
433                 i2c_r(gspca_dev, PAS106_REG9 + 3);      /* red */
434                 return gspca_dev->usb_buf[0] & 0x0f;
435         }
436         return 0;
437 }
438 
439 static void setautogain(struct gspca_dev *gspca_dev)
440 {
441         struct sd *sd = (struct sd *) gspca_dev;
442 
443         if (sd->autogain)
444                 sd->ag_cnt = AG_CNT_START;
445         else
446                 sd->ag_cnt = -1;
447 }
448 
449 static void Et_init1(struct gspca_dev *gspca_dev)
450 {
451         __u8 value;
452 /*      __u8 I2c0 [] = {0x0a, 0x12, 0x05, 0x22, 0xac, 0x00, 0x01, 0x00}; */
453         __u8 I2c0[] = { 0x0a, 0x12, 0x05, 0x6d, 0xcd, 0x00, 0x01, 0x00 };
454                                                 /* try 1/120 0x6d 0xcd 0x40 */
455 /*      __u8 I2c0 [] = {0x0a, 0x12, 0x05, 0xfe, 0xfe, 0xc0, 0x01, 0x00};
456                                                  * 1/60000 hmm ?? */
457 
458         PDEBUG(D_STREAM, "Open Init1 ET");
459         reg_w_val(gspca_dev, ET_GPIO_DIR_CTRL, 7);
460         reg_r(gspca_dev, ET_GPIO_IN, 1);
461         reg_w_val(gspca_dev, ET_RESET_ALL, 1);
462         reg_w_val(gspca_dev, ET_RESET_ALL, 0);
463         reg_w_val(gspca_dev, ET_ClCK, 0x10);
464         reg_w_val(gspca_dev, ET_CTRL, 0x19);
465         /*   compression et subsampling */
466         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv)
467                 value = ET_COMP_VAL1;
468         else
469                 value = ET_COMP_VAL0;
470         PDEBUG(D_STREAM, "Open mode %d Compression %d",
471                gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv,
472                value);
473         reg_w_val(gspca_dev, ET_COMP, value);
474         reg_w_val(gspca_dev, ET_MAXQt, 0x1d);
475         reg_w_val(gspca_dev, ET_MINQt, 0x02);
476         /* undocumented registers */
477         reg_w_val(gspca_dev, ET_REG1d, 0xff);
478         reg_w_val(gspca_dev, ET_REG1e, 0xff);
479         reg_w_val(gspca_dev, ET_REG1f, 0xff);
480         reg_w_val(gspca_dev, ET_REG20, 0x35);
481         reg_w_val(gspca_dev, ET_REG21, 0x01);
482         reg_w_val(gspca_dev, ET_REG22, 0x00);
483         reg_w_val(gspca_dev, ET_REG23, 0xf7);
484         reg_w_val(gspca_dev, ET_REG24, 0xff);
485         reg_w_val(gspca_dev, ET_REG25, 0x07);
486         /* colors setting */
487         reg_w_val(gspca_dev, ET_G_RED, 0x80);
488         reg_w_val(gspca_dev, ET_G_GREEN1, 0x80);
489         reg_w_val(gspca_dev, ET_G_BLUE, 0x80);
490         reg_w_val(gspca_dev, ET_G_GREEN2, 0x80);
491         reg_w_val(gspca_dev, ET_G_GR_H, 0x00);
492         reg_w_val(gspca_dev, ET_G_GB_H, 0x00);
493         /* Window control registers */
494         reg_w_val(gspca_dev, ET_SYNCHRO, 0xf0);
495         reg_w_val(gspca_dev, ET_STARTX, 0x56);          /* 0x56 */
496         reg_w_val(gspca_dev, ET_STARTY, 0x05);          /* 0x04 */
497         reg_w_val(gspca_dev, ET_WIDTH_LOW, 0x60);
498         reg_w_val(gspca_dev, ET_HEIGTH_LOW, 0x20);
499         reg_w_val(gspca_dev, ET_W_H_HEIGTH, 0x50);
500         reg_w_val(gspca_dev, ET_REG6e, 0x86);
501         reg_w_val(gspca_dev, ET_REG6f, 0x01);
502         reg_w_val(gspca_dev, ET_REG70, 0x86);
503         reg_w_val(gspca_dev, ET_REG71, 0x14);
504         reg_w_val(gspca_dev, ET_REG72, 0x00);
505         /* Clock Pattern registers */
506         reg_w_val(gspca_dev, ET_REG73, 0x00);
507         reg_w_val(gspca_dev, ET_REG74, 0x00);
508         reg_w_val(gspca_dev, ET_REG75, 0x0a);
509         reg_w_val(gspca_dev, ET_I2C_CLK, 0x04);
510         reg_w_val(gspca_dev, ET_PXL_CLK, 0x01);
511         /* set the sensor */
512         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
513                 I2c0[0] = 0x06;
514                 i2c_w(gspca_dev, PAS106_REG2, I2c0, sizeof I2c0, 1);
515                 i2c_w(gspca_dev, PAS106_REG9, I2c2, sizeof I2c2, 1);
516                 value = 0x06;
517                 i2c_w(gspca_dev, PAS106_REG2, &value, 1, 1);
518                 i2c_w(gspca_dev, PAS106_REG3, I2c3, sizeof I2c3, 1);
519                 /* value = 0x1f; */
520                 value = 0x04;
521                 i2c_w(gspca_dev, PAS106_REG0e, &value, 1, 1);
522         } else {
523                 I2c0[0] = 0x0a;
524 
525                 i2c_w(gspca_dev, PAS106_REG2, I2c0, sizeof I2c0, 1);
526                 i2c_w(gspca_dev, PAS106_REG9, I2c2, sizeof I2c2, 1);
527                 value = 0x0a;
528                 i2c_w(gspca_dev, PAS106_REG2, &value, 1, 1);
529                 i2c_w(gspca_dev, PAS106_REG3, I2c3, sizeof I2c3, 1);
530                 value = 0x04;
531                 /* value = 0x10; */
532                 i2c_w(gspca_dev, PAS106_REG0e, &value, 1, 1);
533                 /* bit 2 enable bit 1:2 select 0 1 2 3
534                    value = 0x07;                                * curve 0 *
535                    i2c_w(gspca_dev, PAS106_REG0f, &value, 1, 1);
536                  */
537         }
538 
539 /*      value = 0x01; */
540 /*      value = 0x22; */
541 /*      i2c_w(gspca_dev, PAS106_REG5, &value, 1, 1); */
542         /* magnetude and sign bit for DAC */
543         i2c_w(gspca_dev, PAS106_REG7, I2c4, sizeof I2c4, 1);
544         /* now set by fifo the whole colors setting */
545         reg_w(gspca_dev, ET_G_RED, GainRGBG, 6);
546         setcolors(gspca_dev, getcolors(gspca_dev));
547 }
548 
549 /* this function is called at probe time */
550 static int sd_config(struct gspca_dev *gspca_dev,
551                      const struct usb_device_id *id)
552 {
553         struct sd *sd = (struct sd *) gspca_dev;
554         struct cam *cam;
555 
556         cam = &gspca_dev->cam;
557         sd->sensor = id->driver_info;
558         if (sd->sensor == SENSOR_PAS106) {
559                 cam->cam_mode = sif_mode;
560                 cam->nmodes = ARRAY_SIZE(sif_mode);
561         } else {
562                 cam->cam_mode = vga_mode;
563                 cam->nmodes = ARRAY_SIZE(vga_mode);
564         }
565         sd->ag_cnt = -1;
566         return 0;
567 }
568 
569 /* this function is called at probe and resume time */
570 static int sd_init(struct gspca_dev *gspca_dev)
571 {
572         struct sd *sd = (struct sd *) gspca_dev;
573 
574         if (sd->sensor == SENSOR_PAS106)
575                 Et_init1(gspca_dev);
576         else
577                 Et_init2(gspca_dev);
578         reg_w_val(gspca_dev, ET_RESET_ALL, 0x08);
579         et_video(gspca_dev, 0);         /* video off */
580         return 0;
581 }
582 
583 /* -- start the camera -- */
584 static int sd_start(struct gspca_dev *gspca_dev)
585 {
586         struct sd *sd = (struct sd *) gspca_dev;
587 
588         if (sd->sensor == SENSOR_PAS106)
589                 Et_init1(gspca_dev);
590         else
591                 Et_init2(gspca_dev);
592 
593         setautogain(gspca_dev);
594 
595         reg_w_val(gspca_dev, ET_RESET_ALL, 0x08);
596         et_video(gspca_dev, 1);         /* video on */
597         return 0;
598 }
599 
600 static void sd_stopN(struct gspca_dev *gspca_dev)
601 {
602         et_video(gspca_dev, 0);         /* video off */
603 }
604 
605 static __u8 Et_getgainG(struct gspca_dev *gspca_dev)
606 {
607         struct sd *sd = (struct sd *) gspca_dev;
608 
609         if (sd->sensor == SENSOR_PAS106) {
610                 i2c_r(gspca_dev, PAS106_REG0e);
611                 PDEBUG(D_CONF, "Etoms gain G %d", gspca_dev->usb_buf[0]);
612                 return gspca_dev->usb_buf[0];
613         }
614         return 0x1f;
615 }
616 
617 static void Et_setgainG(struct gspca_dev *gspca_dev, __u8 gain)
618 {
619         struct sd *sd = (struct sd *) gspca_dev;
620 
621         if (sd->sensor == SENSOR_PAS106) {
622                 __u8 i2cflags = 0x01;
623 
624                 i2c_w(gspca_dev, PAS106_REG13, &i2cflags, 1, 3);
625                 i2c_w(gspca_dev, PAS106_REG0e, &gain, 1, 1);
626         }
627 }
628 
629 #define BLIMIT(bright) \
630         (u8)((bright > 0x1f) ? 0x1f : ((bright < 4) ? 3 : bright))
631 #define LIMIT(color) \
632         (u8)((color > 0xff) ? 0xff : ((color < 0) ? 0 : color))
633 
634 static void do_autogain(struct gspca_dev *gspca_dev)
635 {
636         struct sd *sd = (struct sd *) gspca_dev;
637         __u8 luma;
638         __u8 luma_mean = 128;
639         __u8 luma_delta = 20;
640         __u8 spring = 4;
641         int Gbright;
642         __u8 r, g, b;
643 
644         if (sd->ag_cnt < 0)
645                 return;
646         if (--sd->ag_cnt >= 0)
647                 return;
648         sd->ag_cnt = AG_CNT_START;
649 
650         Gbright = Et_getgainG(gspca_dev);
651         reg_r(gspca_dev, ET_LUMA_CENTER, 4);
652         g = (gspca_dev->usb_buf[0] + gspca_dev->usb_buf[3]) >> 1;
653         r = gspca_dev->usb_buf[1];
654         b = gspca_dev->usb_buf[2];
655         r = ((r << 8) - (r << 4) - (r << 3)) >> 10;
656         b = ((b << 7) >> 10);
657         g = ((g << 9) + (g << 7) + (g << 5)) >> 10;
658         luma = LIMIT(r + g + b);
659         PDEBUG(D_FRAM, "Etoms luma G %d", luma);
660         if (luma < luma_mean - luma_delta || luma > luma_mean + luma_delta) {
661                 Gbright += (luma_mean - luma) >> spring;
662                 Gbright = BLIMIT(Gbright);
663                 PDEBUG(D_FRAM, "Etoms Gbright %d", Gbright);
664                 Et_setgainG(gspca_dev, (__u8) Gbright);
665         }
666 }
667 
668 #undef BLIMIT
669 #undef LIMIT
670 
671 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
672                         u8 *data,                       /* isoc packet */
673                         int len)                        /* iso packet length */
674 {
675         int seqframe;
676 
677         seqframe = data[0] & 0x3f;
678         len = (int) (((data[0] & 0xc0) << 2) | data[1]);
679         if (seqframe == 0x3f) {
680                 PDEBUG(D_FRAM,
681                        "header packet found datalength %d !!", len);
682                 PDEBUG(D_FRAM, "G %d R %d G %d B %d",
683                        data[2], data[3], data[4], data[5]);
684                 data += 30;
685                 /* don't change datalength as the chips provided it */
686                 gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
687                 gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
688                 return;
689         }
690         if (len) {
691                 data += 8;
692                 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
693         } else {                        /* Drop Packet */
694                 gspca_dev->last_packet_type = DISCARD_PACKET;
695         }
696 }
697 
698 static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
699 {
700         struct gspca_dev *gspca_dev =
701                 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
702         struct sd *sd = (struct sd *)gspca_dev;
703 
704         gspca_dev->usb_err = 0;
705 
706         if (!gspca_dev->streaming)
707                 return 0;
708 
709         switch (ctrl->id) {
710         case V4L2_CID_BRIGHTNESS:
711                 setbrightness(gspca_dev, ctrl->val);
712                 break;
713         case V4L2_CID_CONTRAST:
714                 setcontrast(gspca_dev, ctrl->val);
715                 break;
716         case V4L2_CID_SATURATION:
717                 setcolors(gspca_dev, ctrl->val);
718                 break;
719         case V4L2_CID_AUTOGAIN:
720                 sd->autogain = ctrl->val;
721                 setautogain(gspca_dev);
722                 break;
723         }
724         return gspca_dev->usb_err;
725 }
726 
727 static const struct v4l2_ctrl_ops sd_ctrl_ops = {
728         .s_ctrl = sd_s_ctrl,
729 };
730 
731 static int sd_init_controls(struct gspca_dev *gspca_dev)
732 {
733         struct sd *sd = (struct sd *)gspca_dev;
734         struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
735 
736         gspca_dev->vdev.ctrl_handler = hdl;
737         v4l2_ctrl_handler_init(hdl, 4);
738         v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
739                         V4L2_CID_BRIGHTNESS, 1, 127, 1, 63);
740         v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
741                         V4L2_CID_CONTRAST, 0, 255, 1, 127);
742         if (sd->sensor == SENSOR_PAS106)
743                 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
744                         V4L2_CID_SATURATION, 0, 15, 1, 7);
745         v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
746                         V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
747         if (hdl->error) {
748                 pr_err("Could not initialize controls\n");
749                 return hdl->error;
750         }
751         return 0;
752 }
753 
754 /* sub-driver description */
755 static const struct sd_desc sd_desc = {
756         .name = MODULE_NAME,
757         .config = sd_config,
758         .init = sd_init,
759         .init_controls = sd_init_controls,
760         .start = sd_start,
761         .stopN = sd_stopN,
762         .pkt_scan = sd_pkt_scan,
763         .dq_callback = do_autogain,
764 };
765 
766 /* -- module initialisation -- */
767 static const struct usb_device_id device_table[] = {
768         {USB_DEVICE(0x102c, 0x6151), .driver_info = SENSOR_PAS106},
769         {USB_DEVICE(0x102c, 0x6251), .driver_info = SENSOR_TAS5130CXX},
770         {}
771 };
772 
773 MODULE_DEVICE_TABLE(usb, device_table);
774 
775 /* -- device connect -- */
776 static int sd_probe(struct usb_interface *intf,
777                     const struct usb_device_id *id)
778 {
779         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
780                                THIS_MODULE);
781 }
782 
783 static struct usb_driver sd_driver = {
784         .name = MODULE_NAME,
785         .id_table = device_table,
786         .probe = sd_probe,
787         .disconnect = gspca_disconnect,
788 #ifdef CONFIG_PM
789         .suspend = gspca_suspend,
790         .resume = gspca_resume,
791         .reset_resume = gspca_resume,
792 #endif
793 };
794 
795 module_usb_driver(sd_driver);
796 

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