drivers/media/usb/gspca/tv8532.c

   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  * 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 MODULE_NAME "tv8532"
  22
  23 #include "gspca.h"
  24
  25 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  26 MODULE_DESCRIPTION("TV8532 USB Camera Driver");
  27 MODULE_LICENSE("GPL");
  28
  29 /* specific webcam descriptor */
  30 struct sd {
  31         struct gspca_dev gspca_dev;     /* !! must be the first item */
  32
  33         __u8 packet;
  34 };
  35
  36 static const struct v4l2_pix_format sif_mode[] = {
  37         {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  38                 .bytesperline = 176,
  39                 .sizeimage = 176 * 144,
  40                 .colorspace = V4L2_COLORSPACE_SRGB,
  41                 .priv = 1},
  42         {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  43                 .bytesperline = 352,
  44                 .sizeimage = 352 * 288,
  45                 .colorspace = V4L2_COLORSPACE_SRGB,
  46                 .priv = 0},
  47 };
  48
  49 /* TV-8532A (ICM532A) registers (LE) */
  50 #define R00_PART_CONTROL 0x00
  51 #define         LATENT_CHANGE   0x80
  52 #define         EXPO_CHANGE     0x04
  53 #define R01_TIMING_CONTROL_LOW 0x01
  54 #define         CMD_EEprom_Open 0x30
  55 #define         CMD_EEprom_Close 0x29
  56 #define R03_TABLE_ADDR 0x03
  57 #define R04_WTRAM_DATA_L 0x04
  58 #define R05_WTRAM_DATA_M 0x05
  59 #define R06_WTRAM_DATA_H 0x06
  60 #define R07_TABLE_LEN   0x07
  61 #define R08_RAM_WRITE_ACTION 0x08
  62 #define R0C_AD_WIDTHL   0x0c
  63 #define R0D_AD_WIDTHH   0x0d
  64 #define R0E_AD_HEIGHTL  0x0e
  65 #define R0F_AD_HEIGHTH  0x0f
  66 #define R10_AD_COL_BEGINL 0x10
  67 #define R11_AD_COL_BEGINH 0x11
  68 #define         MIRROR          0x04    /* [10] */
  69 #define R14_AD_ROW_BEGINL 0x14
  70 #define R15_AD_ROWBEGINH  0x15
  71 #define R1C_AD_EXPOSE_TIMEL 0x1c
  72 #define R20_GAIN_G1L    0x20
  73 #define R21_GAIN_G1H    0x21
  74 #define R22_GAIN_RL     0x22
  75 #define R23_GAIN_RH     0x23
  76 #define R24_GAIN_BL     0x24
  77 #define R25_GAIN_BH     0x25
  78 #define R26_GAIN_G2L    0x26
  79 #define R27_GAIN_G2H    0x27
  80 #define R28_QUANT       0x28
  81 #define R29_LINE        0x29
  82 #define R2C_POLARITY    0x2c
  83 #define R2D_POINT       0x2d
  84 #define R2E_POINTH      0x2e
  85 #define R2F_POINTB      0x2f
  86 #define R30_POINTBH     0x30
  87 #define R31_UPD         0x31
  88 #define R2A_HIGH_BUDGET 0x2a
  89 #define R2B_LOW_BUDGET  0x2b
  90 #define R34_VID         0x34
  91 #define R35_VIDH        0x35
  92 #define R36_PID         0x36
  93 #define R37_PIDH        0x37
  94 #define R39_Test1       0x39            /* GPIO */
  95 #define R3B_Test3       0x3b            /* GPIO */
  96 #define R83_AD_IDH      0x83
  97 #define R91_AD_SLOPEREG 0x91
  98 #define R94_AD_BITCONTROL 0x94
  99
 100 static const u8 eeprom_data[][3] = {
 101 /*      dataH dataM dataL */
 102         {0x01, 0x00, 0x01},
 103         {0x01, 0x80, 0x11},
 104         {0x05, 0x00, 0x14},
 105         {0x05, 0x00, 0x1c},
 106         {0x0d, 0x00, 0x1e},
 107         {0x05, 0x00, 0x1f},
 108         {0x05, 0x05, 0x19},
 109         {0x05, 0x01, 0x1b},
 110         {0x05, 0x09, 0x1e},
 111         {0x0d, 0x89, 0x2e},
 112         {0x05, 0x89, 0x2f},
 113         {0x05, 0x0d, 0xd9},
 114         {0x05, 0x09, 0xf1},
 115 };
 116
 117
 118 /* write 1 byte */
 119 static void reg_w1(struct gspca_dev *gspca_dev,
 120                   __u16 index, __u8 value)
 121 {
 122         gspca_dev->usb_buf[0] = value;
 123         usb_control_msg(gspca_dev->dev,
 124                         usb_sndctrlpipe(gspca_dev->dev, 0),
 125                         0x02,
 126                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 127                         0,      /* value */
 128                         index, gspca_dev->usb_buf, 1, 500);
 129 }
 130
 131 /* write 2 bytes */
 132 static void reg_w2(struct gspca_dev *gspca_dev,
 133                   u16 index, u16 value)
 134 {
 135         gspca_dev->usb_buf[0] = value;
 136         gspca_dev->usb_buf[1] = value >> 8;
 137         usb_control_msg(gspca_dev->dev,
 138                         usb_sndctrlpipe(gspca_dev->dev, 0),
 139                         0x02,
 140                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 141                         0,      /* value */
 142                         index, gspca_dev->usb_buf, 2, 500);
 143 }
 144
 145 static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
 146 {
 147         int i;
 148
 149         reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open);
 150         for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) {
 151                 reg_w1(gspca_dev, R03_TABLE_ADDR, i);
 152                 reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]);
 153                 reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]);
 154                 reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]);
 155                 reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0);
 156         }
 157         reg_w1(gspca_dev, R07_TABLE_LEN, i);
 158         reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
 159 }
 160
 161 /* this function is called at probe time */
 162 static int sd_config(struct gspca_dev *gspca_dev,
 163                      const struct usb_device_id *id)
 164 {
 165         struct cam *cam;
 166
 167         cam = &gspca_dev->cam;
 168         cam->cam_mode = sif_mode;
 169         cam->nmodes = ARRAY_SIZE(sif_mode);
 170
 171         return 0;
 172 }
 173
 174 static void tv_8532_setReg(struct gspca_dev *gspca_dev)
 175 {
 176         reg_w1(gspca_dev, R3B_Test3, 0x0a);     /* Test0Sel = 10 */
 177         /******************************************************/
 178         reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
 179         reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01);
 180         reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
 181         reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
 182                                                 /* begin active line */
 183         reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
 184                                                 /* mirror and digital gain */
 185         reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
 186
 187         reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
 188         reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
 189         reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 190                                                 /* = 0x84 */
 191 }
 192
 193 /* this function is called at probe and resume time */
 194 static int sd_init(struct gspca_dev *gspca_dev)
 195 {
 196         tv_8532WriteEEprom(gspca_dev);
 197
 198         return 0;
 199 }
 200
 201 static void setexposure(struct gspca_dev *gspca_dev, s32 val)
 202 {
 203         reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, val);
 204         reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 205                                                 /* 0x84 */
 206 }
 207
 208 static void setgain(struct gspca_dev *gspca_dev, s32 val)
 209 {
 210         reg_w2(gspca_dev, R20_GAIN_G1L, val);
 211         reg_w2(gspca_dev, R22_GAIN_RL, val);
 212         reg_w2(gspca_dev, R24_GAIN_BL, val);
 213         reg_w2(gspca_dev, R26_GAIN_G2L, val);
 214 }
 215
 216 /* -- start the camera -- */
 217 static int sd_start(struct gspca_dev *gspca_dev)
 218 {
 219         struct sd *sd = (struct sd *) gspca_dev;
 220
 221         reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8);         /* 0x20; 0x0c */
 222         reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
 223
 224         /************************************************/
 225         reg_w1(gspca_dev, R28_QUANT, 0x90);
 226                                         /* 0x72 compressed mode 0x28 */
 227         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 228                 /* 176x144 */
 229                 reg_w1(gspca_dev, R29_LINE, 0x41);
 230                                         /* CIF - 2 lines/packet */
 231         } else {
 232                 /* 352x288 */
 233                 reg_w1(gspca_dev, R29_LINE, 0x81);
 234                                         /* CIF - 2 lines/packet */
 235         }
 236         /************************************************/
 237         reg_w1(gspca_dev, R2C_POLARITY, 0x10);          /* slow clock */
 238         reg_w1(gspca_dev, R2D_POINT, 0x14);
 239         reg_w1(gspca_dev, R2E_POINTH, 0x01);
 240         reg_w1(gspca_dev, R2F_POINTB, 0x12);
 241         reg_w1(gspca_dev, R30_POINTBH, 0x01);
 242
 243         tv_8532_setReg(gspca_dev);
 244
 245         /************************************************/
 246         reg_w1(gspca_dev, R31_UPD, 0x01);       /* update registers */
 247         msleep(200);
 248         reg_w1(gspca_dev, R31_UPD, 0x00);       /* end update */
 249
 250         gspca_dev->empty_packet = 0;            /* check the empty packets */
 251         sd->packet = 0;                         /* ignore the first packets */
 252
 253         return 0;
 254 }
 255
 256 static void sd_stopN(struct gspca_dev *gspca_dev)
 257 {
 258         reg_w1(gspca_dev, R3B_Test3, 0x0b);     /* Test0Sel = 11 = GPIO */
 259 }
 260
 261 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 262                         u8 *data,                       /* isoc packet */
 263                         int len)                        /* iso packet length */
 264 {
 265         struct sd *sd = (struct sd *) gspca_dev;
 266         int packet_type0, packet_type1;
 267
 268         packet_type0 = packet_type1 = INTER_PACKET;
 269         if (gspca_dev->empty_packet) {
 270                 gspca_dev->empty_packet = 0;
 271                 sd->packet = gspca_dev->pixfmt.height / 2;
 272                 packet_type0 = FIRST_PACKET;
 273         } else if (sd->packet == 0)
 274                 return;                 /* 2 more lines in 352x288 ! */
 275         sd->packet--;
 276         if (sd->packet == 0)
 277                 packet_type1 = LAST_PACKET;
 278
 279         /* each packet contains:
 280          * - header 2 bytes
 281          * - RGRG line
 282          * - 4 bytes
 283          * - GBGB line
 284          * - 4 bytes
 285          */
 286         gspca_frame_add(gspca_dev, packet_type0,
 287                         data + 2, gspca_dev->pixfmt.width);
 288         gspca_frame_add(gspca_dev, packet_type1,
 289                         data + gspca_dev->pixfmt.width + 5,
 290                         gspca_dev->pixfmt.width);
 291 }
 292
 293 static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
 294 {
 295         struct gspca_dev *gspca_dev =
 296                 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 297
 298         gspca_dev->usb_err = 0;
 299
 300         if (!gspca_dev->streaming)
 301                 return 0;
 302
 303         switch (ctrl->id) {
 304         case V4L2_CID_EXPOSURE:
 305                 setexposure(gspca_dev, ctrl->val);
 306                 break;
 307         case V4L2_CID_GAIN:
 308                 setgain(gspca_dev, ctrl->val);
 309                 break;
 310         }
 311         return gspca_dev->usb_err;
 312 }
 313
 314 static const struct v4l2_ctrl_ops sd_ctrl_ops = {
 315         .s_ctrl = sd_s_ctrl,
 316 };
 317
 318 static int sd_init_controls(struct gspca_dev *gspca_dev)
 319 {
 320         struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
 321
 322         gspca_dev->vdev.ctrl_handler = hdl;
 323         v4l2_ctrl_handler_init(hdl, 2);
 324         v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 325                         V4L2_CID_EXPOSURE, 0, 0x18f, 1, 0x18f);
 326         v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 327                         V4L2_CID_GAIN, 0, 0x7ff, 1, 0x100);
 328
 329         if (hdl->error) {
 330                 pr_err("Could not initialize controls\n");
 331                 return hdl->error;
 332         }
 333         return 0;
 334 }
 335
 336 /* sub-driver description */
 337 static const struct sd_desc sd_desc = {
 338         .name = MODULE_NAME,
 339         .config = sd_config,
 340         .init = sd_init,
 341         .init_controls = sd_init_controls,
 342         .start = sd_start,
 343         .stopN = sd_stopN,
 344         .pkt_scan = sd_pkt_scan,
 345 };
 346
 347 /* -- module initialisation -- */
 348 static const struct usb_device_id device_table[] = {
 349         {USB_DEVICE(0x046d, 0x0920)},
 350         {USB_DEVICE(0x046d, 0x0921)},
 351         {USB_DEVICE(0x0545, 0x808b)},
 352         {USB_DEVICE(0x0545, 0x8333)},
 353         {USB_DEVICE(0x0923, 0x010f)},
 354         {}
 355 };
 356
 357 MODULE_DEVICE_TABLE(usb, device_table);
 358
 359 /* -- device connect -- */
 360 static int sd_probe(struct usb_interface *intf,
 361                     const struct usb_device_id *id)
 362 {
 363         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 364                                THIS_MODULE);
 365 }
 366
 367 static struct usb_driver sd_driver = {
 368         .name = MODULE_NAME,
 369         .id_table = device_table,
 370         .probe = sd_probe,
 371         .disconnect = gspca_disconnect,
 372 #ifdef CONFIG_PM
 373         .suspend = gspca_suspend,
 374         .resume = gspca_resume,
 375         .reset_resume = gspca_resume,
 376 #endif
 377 };
 378
 379 module_usb_driver(sd_driver);